JP3826012B2

JP3826012B2 - Sea life adhesion prevention device and operation method thereof

Info

Publication number: JP3826012B2
Application number: JP2001335379A
Authority: JP
Inventors: 早織榊原
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2001-10-31
Filing date: 2001-10-31
Publication date: 2006-09-27
Anticipated expiration: 2021-10-31
Also published as: JP2003138539A

Description

【０００１】
【発明の属する技術分野】
本発明は、海水を取扱う取水路や排水路の水路および水槽のような構造物表面への海生物の付着を防止する海生物の付着防止装置およびこれを運用する方法に関する。
【０００２】
【従来の技術】
従来、原子力発電プラントや火力発電プラント、コンバインドサイクル発電プラント、化学プラント等の各種プラントにおいて海水を取扱う取水路や排水路の水路または水槽では、イガイ、フジツボ、ヒドロ虫、海藻類等の海生物が表面に付着し、海水取水量への影響や、プラント系統内への海生物の流入の問題を引き起こしている。
【０００３】
海生物の付着を防ぐため、水路表面に防汚塗装を施している場合もあるが、実際には防汚塗装の剥がれや経年劣化による性能低下により徐々に水路壁面へ海生物が付着していき、水路が狭まり海水の圧力損失が増加して海水取水量が経年的に低下する事象が発生している。
【０００４】
これら海生物の回路壁面からの除去作業や水路表面への防汚塗料の再塗装は、プラントの運転を停止した際の限られた点検期間内で行う必要があるが、作業工程も多く、また塗装の乾燥時間も必要となる。
【０００５】
さらに、水路や水槽内は作業エリアが狭く、かつ海生物の死滅による異臭が強く作業環境が劣悪なことから、この水路・水槽内の点検・清掃作業は時間および環境も含め、厳しい作業となっている。近年、プラント点検期間が年々短縮されていることから、この水路および水槽の清掃・点検の工程がプラントの点検期間自体にも影響を及ぼすこととなる。
【０００６】
また、場合によっては、海生物の構造物（水路、水槽壁面）への付着防止対策として、海水中に塩素を注入したり、毒性イオンを生成する顔料を含有する防汚塗料を使用したり、海水の電解による塩素や銅などの毒性イオンの生成等が実施されている。これらは有効な防汚効果を発揮するが、環境汚染の原因となる可能性もあることから、昨今では使用を抑制する方向にある。
【０００７】
これに代わって、最近ではシリコーン系防汚塗料が使用されているが、コストが高いことと、塗布に当っては何層にも下塗りや中塗りを行うため、塗装に時間がかかり、広範囲な場所への適用には不向きである。また、シリコーン系防汚塗料が塗布された水路の水槽の壁面に異物等が接触すると塗膜が剥離しやすくなり、水路や水槽内のように海生物や異物が流入する可能性のある場所では防汚効果も低減するが、このような塗料で対応しているのが現状である。
【０００８】
さらに、海からの取水の場合、取水口付近やその取水路では、建設初期でない限り、海水を排水することが不可能な箇所が多い。従来は、このような場所への海生物付着は当然とみなされ、その分の水路の圧力損失増加を考慮して取水ポンプおよび取水システムの設計が行われていた。
【０００９】
特開２０００−１１９８８４号公報には、海水に接する構造物の防汚装置が記載されている。この防汚装置は、海水に接する構造物の海水側表面に絶縁性接着剤を介して設けられた陽極形成部材と、陽極形成部材に被覆された電気化学的に活性で安定な電気的触媒と、海水に接触するように設置された導電体と、正極が陽極形成部材または電気的触媒に接続され、負極が導電体に接続され、自動電位制御部を内蔵する外部直流電源とを備え、外部直流電源は正極と負極との間の電位が海水中で塩素の発生を抑制しつつ酸素を発生させる値に設定された構造物の防汚装置である。
【００１０】
この防汚装置は海水中で酸素を発生させることにより海生物の付着を防止する装置である。これは原理的には水路・水槽においても採用可能であり、海生物の付着防止効果により点検・清掃作業は軽減されると考えられるが、水路・水槽の防汚装置としての実用化には未だ十分とは言えない。
【００１１】
また、特開２００１−１１５４２７号公報には、防汚性能の状態を把握することができる海水接触構造物の防汚装置およびその性能劣化監視方法が記載されている。この防汚装置およびその性能劣化監視方法は、海水中で酸素を発生させることにより海生物の付着を防止するものである。
【００１２】
【発明が解決しようとする課題】
特開２０００−１１９８８４号公報に記載の海水に接する構造物の防汚装置を水路・水槽内に設置する場合、以下のような問題点が生じる。
【００１３】
まず第１に、この防汚装置では、水路や水槽表面に対し、接着剤にて防汚装置の陽極形成部材を設置する必要がある。この防汚装置を設けるために、水路および水槽内の水抜きが必要になり大掛かりな準備を伴う。また、海と連結する水路等のように、構造的に水抜きが出来ない箇所への防汚装置の設置は水路等の建設時を除き、不可能である。また水路等の建設時に防汚装置を設置した場合は、その後水抜きができないことから、防汚装置のメンテナンスができない。
【００１４】
第２に、水路や水槽は表面積が大きいため、防汚装置を水路および水槽内の全表面に接着剤で設置することになると、工期がかかり限定された点検期間内での対応が難しくなる。
【００１５】
第３に、防汚装置の設置箇所は水没するところであるから、仮に防汚装置の故障や異常が発生し、防汚装置を回収し確認したい場合は、水路・水槽内の全ての水を抜く必要がある。しかしながら、この水抜き作業は大掛かりでありこの防汚装置のためだけの水抜きは行えないことから、プラントの点検期間の水抜き時期に合わせて確認することとなる。そのため、プラント点検期間までは対応できず、防汚装置の信頼性の面で問題となる。
【００１６】
第４に、保守・点検については、プラントの点検期間が限定されていることから、広範囲な水路および水槽内に設置された全ての防汚装置の保守・点検作業を点検期間内に終了させることは困難である。
【００１７】
また、特開２００１−１１５４２７号公報に記載された防汚装置およびその性能劣化監視方法においても、絶縁材を介して接着剤にて陽極側導電体を構造物に据付ける防汚装置である。そのため、防汚装置は、設置箇所の水抜き後に据付けられることが前提となり、常時水没している箇所に対しての防汚装置の据付けは不可能である。このため、前記特開２０００−１１９８８４号公報に示された防汚装置と同様な問題を抱えている。
【００１８】
本発明は、このような従来技術の問題点を考慮してなされたものであり、水路および水槽のような構造物表面への海生成物の付着を良好に防止することができるとともに、設置箇所の水抜きの可否に拘らず広範な構造物に取付・取出しが可能な海生物の付着防止装置およびその運用方法を提供することを目的としている。
【００１９】
また、本発明は、広範な構造物に対する海生物除去作業の軽減、点検期間の短縮および装置の信頼性の向上が図られる海生物の付着防止装置およびその運用方法を提供することを目的としている。
【００２０】
【課題を解決するための手段】
本発明に係る海生物の付着防止装置は、上述した課題を解決するために、請求項１に記載したように、海水中で酸素を発生させて海水に接する構造物への海生物の着生を抑制する海生物の付着防止装置において、陽極形成部材とこの陽極形成部材に被覆される電気化学的に活性な電気的触媒とからなる陽極部材導電体が海水に接する前記構造物の海水側前面に前記電気的触媒が海水側に向くように設置される前記陽極部材導電体と、海水に接触するように設置される陰極側導電体と、自動電位制御部を内蔵する外部直流電源の正極が前記陽極部材導電体の陽極形成部材または電気的触媒に接続され、負極が前記陰極側導電体に接続される前記外部直流電源とを備え、この外部直流電源は正極と負極との間の電位が海水中で塩素の発生を抑制しつつ酸素を発生させる値に設定され、しかも、水路内および水槽内に設置される前記陽極部材導電体および前記陰極側導電体のうちの少なくとも１種の導電体は水路および水槽に対して上部より挿入・取出しが可能な可動部を有し、前記水路または水槽に対して上部より挿入・取出しされる前記可動部を導くためのガイドを備えるものである。
【００２１】
また、上述した課題を解決するために、本発明に係る海生物の付着防止装置は、請求項２に記載したように、上記陰極側導電体は前記陽極部材導電体と絶縁材を介して一体構造をなし、この一体構造は前記水路および水槽に対して上部より挿入・取出しが可能な可動部を有したり、さらに、請求項３または４に記載したように、上記陽極部材導電体、上記陰極側導電体またはこれら導電体の一体構造が有する可動部は、１枚の鋼板のような形状ではなく、形状変形が可能なゴムシート状、ロールカーテン状または、格子状のような形状とすることが好ましい。
【００２２】
さらに、上述した課題を解決するために、本発明に係る海生物の付着防止装置は、請求項５に記載したように、上記可動部の下部に錘を備えたり、または上記可動部の導電体の自重が錘の役目を果すように構成されるものであり、また、請求項６に記載したように、前記ガイドは、前記可動部を水路および水槽の底面部に滑らかに導くためのスロープを有するスロープ付ガイドであり、さらに、請求項７に記載したように、上記可動部を水路および水槽の壁面に引き寄せるために壁面側を負圧にする負圧システムを備えるものである。
【００２３】
また、上述した課題を解決するために、本発明に係る海生物の付着防止装置は、請求項８に記載したように、上記可動部を巻き取りまたは引抜いて水路および水槽から回収する回収装置を備えるものである。さらに、請求項９に記載したように、回収装置は、回収した可動部を洗浄する洗浄システムを有するものが好ましく、請求項１０に記載したように、回収した可動部はカートリッジタイプとして着脱でき交換可能な構造であることが好ましい。
【００２４】
また、上述した課題を解決するために、本発明に係る海生物の付着防止装置は、請求項１１に記載したように、上記回収装置は、着脱可能であり、他の箇所に設置されている前記海生物の付着防止装置の可動部を回収する回収装置として共用される構造を有することが好ましい。
【００２５】
さらに、本発明に係る海生物の付着防止装置は、請求項１２に記載したように、水中監視カメラを備えるものであったり、また、請求項１３に記載したように、陽極部材導電体に流れる電流を監視する電流監視装置と、この電流監視装置からの監視結果に基づき陽極部材導電体の耐用状態を判定する判定装置を備えるものであり、さらに、請求項１４に記載したように、前記判定装置は前記電流監視装置で監視された積算電流値に基づいて陽極部材導電体の耐用状態を判定するものである。
【００２６】
本発明に係る海生物の付着防止装置の運用方法は、上述した課題を解決するために、請求項１５に記載したように、海水中で酸素を発生させて海水に接する構造物への海生物の着生を抑制する海生物の付着防止装置を運用する方法において、水路または水槽に対して上部より挿入・取出しが可能な可動部を有する陽極部材導電体および陰極側導電体のうちの少なくとも１種の導電体を可動式導電体とし、この可動式導電体を水路内または水槽内に上部よりガイドで導いて挿入し、挿入された可動式導電体と、これとは異なる極の導電体との間に電流を流すことにより、前記陽極部材導電体の有する電気化学的に活性な電気的触媒を介して、海水中に塩素の発生を抑制しつつ酸素を発生させて、海生物の構造物への付着を抑制し、その後、前記可動式導電体を水路または水槽内からガイドで導いて上部より取出し、回収する方法である。
【００２７】
上述した課題を解決するために、本発明に係る海生物の付着防止装置の運用方法は、請求項１６に記載したように、回収した上記可動式導電体をジェット洗浄する、またはブラシで洗浄するものであり、また、請求項１７に記載したように、回収した前記可動式導電体を取り外し、または、取り外された可動式導電体を取り付けて、あるいは新たな可動式導電体に交換して用いるものであり、さらに、請求項１８に記載したように、上記酸素を発生させる際に、前記陽極部材導電体に流れる電流を監視し、その監視結果に基づいて前記陽極部材導電体の耐用状態を判定するものである。
【００２８】
また、本発明に係る海生物の付着防止装置の運用方法は、上述した課題を解決するために、請求項１９に記載したように、回収装置を有する海生物の付着防止装置を運用する方法において、海生物の付着防止装置が水路内または水槽内に複数個設けられ、各海生物の付着防止装置の回収装置が単独に取り外され、各海生物の付着防止装置の可動部も回収される方法である。
【００２９】
さらに、本発明に係る海生物の付着防止装置の運用方法は請求項２０に記載したように、請求項１〜１４のいずれかに記載される海生物の付着防止装置を運用する方法において、この海生物の付着防止装置を水路内または水槽内に複数個並列に設けて使用することから構成されている。
【００３０】
本発明に係る海生物の付着防止装置および海生物の付着防止装置の運用方法によれば、上記陽極部材導電体または上記陰極側導電体は水路および水槽に対して上部よりガイドで導いて挿入・取出しが可能な可動部を有するので、設置箇所の水抜きの可否に係わらず広範な構造物に取付・取出しが可能となり、構造物への海生物の付着防止装置として適用範囲が拡大される。
【００３１】
また、前記可動部をゴムシート状、ロールカーテン状、格子状の形状とすることにより、回収・設置作業が容易となり、また回収後の収納スペースがコンパクトになる。このコンパクトな形状のまま、装置内で洗浄することにより、清掃作業の効率化、洗浄水の飛散防止も図れる。回収した形状にてカートリッジタイプにて着脱可能な形状とした場合、予備のカートリッジタイプの装置と交換することにより、早急に復旧が可能となる。また、可動部の回収装置を着脱することにより、複数個設置されている海生物の付着防止装置の可動部を回収する回収装置として共用することが可能となる。
【００３２】
さらに、本発明に係る海生物の付着防止装置の陽極部材導電体に流れる電流や積算電流値を監視する電流監視装置やこの測定変化に基づき陽極部材導電体の耐用状態を判定する判定装置を備えることで、陽極部材導電体の耐用状態（健全性および性能劣化等）を確実に把握でき、陽極部材導電体の性能劣化によるメンテナンス時期を判断する有効な手段となる。これらにより、海生物の付着および成長を未然に防止することが可能となる。前記電流監視装置や判定装置を備えることで、海水に漂う導電性異物が海水接触構造物に引っかかった場合に生じる海水と接触する銅製部材の異常腐食等を未然に防ぐことが可能となる。
【００３３】
また、本発明に係る海生物の付着防止装置に水中監視カメラを設置することにより、陽極部材導電体の酸素発生状況や、可動部の設置状態の確認を行うことで健全性の向上を図ることができる。また、海水漂う異物や藻類の付着の有無も監視することができ、陽極部材導電体での電流値および積算電流値の変化と合わせて、異常状態の原因の早期発見が可能となる。
【００３４】
【発明の実施の形態】
以下、本発明に係る海生物の付着防止装置の実施の形態について添付図面を参照して説明する。
【００３５】
本発明の海生物の付着防止装置およびその運用方法における海水に接する構造物としては、海水の流れる水路や、海水を溜める水槽、水室等その他海水が流入したり、あるいは海水と接触している構造物であり、本発明の目的が達成されるものであれば構造物の形状、材質等は制限されない。
【００３６】
図１は、本発明に係る海生物の付着防止装置の一例を示す概略図である。
【００３７】
図１を参照して、本発明に係る海生物の付着防止装置の第１実施形態について説明する。図１に示すように、海生物の付着防止装置１は、海水３０中で酸素を発生させて、海水３０に接する水路、水槽等の構造物３５への海生物の着生を抑制するためのものである。海生物の付着防止装置１は、陽極部材としての陽極部材導電体２と、海水３０に接する陰極部材としての陰極側導電体３と、自動電位制御部８ｄを備えた外部直流電源８とを有する。
【００３８】
外部直流電源８はその正極８ａを陽極部材導電体２に、その負極８ｂを陰極側導電体３にそれぞれ接続される。４は照合電極で、海水中に設けられており、外部直流電源８の照合極８ｃに接続される。
【００３９】
陽極部材導電体２は、図２に示すように、陽極形成部材５と、この陽極形成部材５の表面を覆う電気的触媒６からなる。電気的触媒６は電気化学的に活性で安定な触媒であり、例えば、陽極形成部材５上に予め触媒被覆処理によって被覆され、電気抵抗加熱等により３５０〜４５０℃で数時間加熱処理を行って熱活性化処理されたものである。電気的触媒６としては、例えば、白金系金属、白金系金属酸化物、およびコバルトまたはマンガンの酸化物のうちから選ばれる単一体、混晶体または複合体を用いることができる。
【００４０】
陽極部材導電体２は、電気的触媒６の被覆層が海水３０側に、陽極形成部材５の層が構造物（水路または水槽）３５の壁面側になるように、海水３０に接する構造物（水路または水槽）３５の海水３０接触側前面に設置される。また、陽極部材導電体２は、例えば、図１に示すように、複数の陽極部材導電体要素２ａ、２ｂから構成され得る。
【００４１】
図１では、陽極部材導電体２の陽極形成部材５に外部直流電源８の正極８ａが接続されているが、これに代えて、電気的触媒６に外部直流電源８の正極８ａが接続されてもよい。なお、陽極部材導電体２は複数の陽極部材導電体要素２ａ、２ｂからなっているので、各陽極部材導電体要素２ａ、２ｂごとに対応する正極８ａが設けられている。
【００４２】
外部直流電源８は、自動電位制御部８ｄを備えており、陽極部材導電体２の電気的触媒６を介して、海水中で塩素ガスを実質的に発生させないで酸素を発生させるように、正極８ａと負極８ｂとの間に形成される通電回路の電位を制御するようになっている。外部直流電源８の正極８ａと負極８ｂとの間に形成される通電回路の電位値としては、標準海水で塩素ガスを発生させる塩素発生電位（ＳＣＥ）の約１．１３Ｖよりも低く、かつ標準海水で酸素を発生させる酸素発生電位の約０．５２Ｖよりも高い値が用いられる。
【００４３】
また、外部直流電源８の正極８ａと負極８ｂとの間に形成される通電回路の具体的な電流値としては、電気的触媒６の種類によって若干の違いがあるが、通常０．３〜３．０Ａ／ｍ^２程度の電流値が用いられる。なお、照合電極８ｃの電位値は海水の電位により自動電位制御部８ｄを校正するために用いられる。
【００４４】
このように、海生物の付着防止装置１によれば、陽極部材導電体２を水路または水槽３５の海水３０側壁面の前面に設置し、陰極側導電体３を海水３０に接触するように設置し、所定の条件で陽極部材導電体２と陰極側導電体３との間に電流を流すことにより、水路または水槽３５の海水側前面において酸素を発生させて、水路または水槽３５の海水側表面への海生物の付着を防止することができる。
【００４５】
また、海生物の付着防止装置１においては、構造物（水路または水槽）３５に設置される陽極部材導電体２と陰極側導電体３のうちの少なくとも１種の導電体は水路および水槽３５に対して上部より挿入・取出しが可能な可動部を出し入れ自在に有する可動式構造となっている。例えば、図１の陽極部材導電体２は、上部より水路や水槽３５内に挿入され、再び上部より取出せるような可動式導電体挿脱構造になっている。図１では、この可動式の陽極部材導電体２が所定位置に確実に挿入されて設置されるように、水路・水槽３５の壁面から陽極部材導電体２のスペース分の距離をおいて水路・水槽３５の底面部に支持体７が設けられている。このような支持体７に代えて、あるいは支持体７と併用して、水路等３５の上部から陽極部材導電体２の挿入（据付け），取り外しが容易にできる取付具等を用いて所定箇所に陽極部材導電体２を設置してもよい。
【００４６】
さらに、海生物の付着防止装置は、図１に示すように、海生物の付着防止装置１に陽極部材導電体２に流れる電流を監視する電流監視装置９と、この電流監視装置９からの監視結果に基づき陽極部材導電体２の耐用状態を判定する判定装置１１を備える。
【００４７】
例えば、図１に示すように、外部直流電源８の各正極８ａには、電流監視装置９が接続されており、各陽極部材導電体要素２ａ、２ｂに流れる電流をそれぞれ監視することができるようになっている。さらに、電流監視装置９には、判定装置１１が接続されており、電流監視装置９からの出力データ（各陽極部材導電体要素２ａ、２ｂに流れる電流の積算電流値または電流値の変化）に基づいて、各陽極部材導電体要素２ａ、２ｂの耐用状態（健全性および性能劣化等）を判定することができるようになっている。
【００４８】
判定装置１１は、電流監視装置９で監視された電流値の変化を各陽極部材導電体要素２ａ、２ｂ間で相対的に比較して、その比較結果を考慮しつつ各陽極部材導電体要素２ａ、２ｂごとの電流値の変化に基づいて各陽極部材導電体要素２ａ、２ｂの耐用状態を判定する。判定装置１１での判定結果は外部直流電源８に出力され、外部直流電源８から各陽極部材導電体要素２ａ、２ｂへの電流供給の遮断等が行われる。
【００４９】
また、前記電流値ないし積算電流値の変化が監視された場合に、水中監視カメラにより海生物の付着防止装置１の設置状態にて、また水抜き作業を行うことなく、目視確認を行い、状況により付着防止装置１の回収操作を実施する。
【００５０】
このように、本発明に係る海生物の付着防止装置の実施形態によれば、陽極部材導電体２と電気的触媒６の電位が外部直流電源８により酸素発生電位（約０．５２Ｖ）以上で塩素発生電位（約１．１３Ｖ）以下の範囲に保持される。これにより電気的触媒６の表面から塩素の発生が抑制されながら酸素が発生する。これにより、海生物の構造物（水路または水槽）３５への付着を積極的かつ有効的に防止することができる。
【００５１】
また、陽極部材導電体２や陰極側導電体３を可動式の構造とすることにより、常時水没する箇所への設置が可能となる。海からの取水の場合、取水口付近や、その取水路に至っては、建設初期でない限り、海水を排水することが不可能な箇所が多く、このような場所の海生物付着は当然とみなされている。従来は、その海生物付着分の水路圧力損失を考慮した取水ポンプの設計およびシステム設計を行ってきており、また場合により、塩素注入等の方法を採用している。
【００５２】
これに対し、本発明の海生物の付着防止装置１は、上記のような場所においても設置が可能であり、システム設計への海生物の影響の軽減や環境改善に寄与する。
【００５３】
また従来は、構造物に付着していた海生物が系統内へ流入し、機器へ悪影響を及ぼすこともあったが、本発明の海生物の付着防止装置１の設置により、構造物３５への海生物付着を防止できるので、プラント系統内への海生物の流入も軽減でき、機器の健全性の向上を図ることが可能となる。
【００５４】
図３は本発明に係る海生物の付着防止装置の第２実施形態を示すものであり、この実施形態では、陽極部材導電体２と陰極側導電体３は、絶縁材１２を介して一体構造とし、水路等の構造部材３５の側壁に取り付けたものである。例えば、図３に示すように、絶縁材１２を湾曲自在な可撓性ベースとし、陽極部材導電体２と陰極側導電体３を接触させないようにベース（絶縁材）１２に設置し、一体構造に構成したものである。
【００５５】
この一体構造は、水路等３５の上部より挿入・取出しが可能な可動式挿脱構造を有し、水路等３５の海水側前面に設置される。
【００５６】
このような一体構造とすることにより、陽極部材導電体２と陰極側導電体３の水路等３５に対しての挿入・取出し等の作業やメンテナンス作業の作業性も向上する。
【００５７】
この海生物の付着防止装置１は、水路３５に対して挿入・取出しが可能な可動式の陽極部材導電体２または陰極側導電体３が、曲線形状に変形可能な構造を有するのものである。
【００５８】
例えば、ゴムシート状やロールカーテン状の可撓性構造を有する陽極部材導電体、陰極側導電体、または上述のような陽極部材導電体と陰極側導電体との一体構造の導電体である。
【００５９】
図４に、ロールカーテン状の陽極部材導電体１３を示す。このように曲線形状あるいは湾曲形状が可能な可動部を有することにより、水路３５への陽極部材導電体１３等の挿入・引出し作業が容易になる。また、これら可動式構造物はロール状に巻き取って保管することができるので、保管形状がコンパクトになり、可動式構造物を回収する回収装置の小型化が図られ、周辺スペースの有効活用が可能となる。なお、図４中の符号１４は、可動式陽極部材導電体１３等の可動部の先端側に付けられた錘（おもり）である。陽極部材導電体１３の可動部に錘を付けることにより、水路３５への陽極部材導電体１３等の可動式構造物の挿入がスムーズになり、また設置位置に確実に固定される。
【００６０】
図５は本発明に係る海生物の付着防止装置の第４実施形態を示すものである。この実施形態は海生物の付着防止装置１において、可動式陽極部材導電体１５や可動式陰極側導電体３が曲線形状に変形可能な構造のもの、あるいは形状に自由度を持つ構造のものである。例えば、可動式陽極部材導電体１５あるいは陰極側導電体３は複数の部材が組み合わされて形状変形が可能となった構造物である。具体的には、シャッター状の構造（第４実施形態）や格子状の構造を有する構成としてもよい。陽極部材導電体１５あるいは陰極側導電体３または陽極部材導電体１５および陰極側導電体３とは湾曲変形可能な一体構造をなす導電体として構成される。
【００６１】
図５は、陽極部材導電体１５がシャッター状あるいは蛇膜状の陽極部材導電体１５となっており、曲線形状あるいは湾曲形状に変形可能な構造を有する。この陽極部材導電体１５の可動部先端側（自由端側）に錘１４が設けられている。
【００６２】
図６は本発明に係る海生物の付着防止装置の第５実施形態を示すものである。この付着防止装置は陽極部材導電体１６が格子状の陽極部材導電体１６であり、形状に自由度を持つ構造物となっている。この陽極部材導電体１６の可動部に錘１４が設けられている。
【００６３】
これら第４および第５実施形態においても、第３実施形態と同様な効果を有している。即ち、水路３５への陽極部材導電体等の可動式（可撓式）変形可能構造物の挿入・引出し作業が容易になり、また、可動式変形可能構造物の保管形状がコンパクトになることから、後述するように可動式変形可能構造物を回収する回収装置等の小型化が図られ、周辺スペースの有効活用が可能となる。
【００６４】
本発明に係る海生物の付着防止装置の第６実施形態は、海生物の付着防止装置１において、可動式の変形可能陽極部材導電体２や陰極側導電体３を含む構造物の下部に錘１４を有したり、または可動式変形可能構造物自体が錘の役目を果すように構成されているものである。これにより、水路３５への可動式変形可能構造物の挿入が容易になり、また、可動式構造物を設置位置に確実に固定することができる。例えば、図４、図５、図６および図１０に示すように、陽極部材導電体１３、１５、１６のような各種の陽極部材導電体に錘１４を設けることができる。また、図１、図３、図７、図８および図９に示される各種の陽極部材導電体のように、陽極部材導電体の可動式構造物自体が錘の役目を果すように構成される。
【００６５】
本発明に係る海生物の付着防止装置の第７実施形態は、海生物の付着防止装置１において、陽極部材導電体２や陰極側導電体３からなる可動式変形可能構造物が水路３５に対して挿入・取出し等がし易いように、可動式変形可能構造物のためのガイド１７，１８が備えられている。ガイドは、可動式変形可能構造物を水路３５の壁面の設置箇所に導くためのガイド１７であり、また可動式変形可能構造物を水路３５の底面部に滑らかに移動させるためのスロープが付いたスロープ付ガイド１８としてもよい。
【００６６】
例えば、図７に示すように、陽極部材導電体２の両側に水路３５の壁面の設置箇所に導くためのガイド１７、あるいは図８に示すように、例えば、ロールカーテン状の陽極部材導電体１３を水路３５の底面部に滑らかに導くためのスロープ付ガイド１８とすることができる。
【００６７】
また、本発明の海生物の付着防止装置１の陽極部材導電体２，１３、陰極側導電体３の可動部に対し、錘１４を取り付けたり、また、可動式の陽極部材導電体２，１３や陰極側導電体をその自重で設置できるような重量とすることにより、さらにガイド１７、スロープ付ガイド１８を設置することにより、確実な場所へ可動部を取り付けることが可能となる。従来技術では取付不可能な水没しているような箇所においても付着防止装置１の設置が可能となる。
【００６８】
ガイド１７やスロープ付ガイド１８を有することでより正確な場所への挿入が可能であり、設置後も安定して固定され健全性が向上する。また、スロープ付ガイド１８においては、錘１４のみでは不可能な箇所や、水路・水槽の底面に対しても、本発明の海生物の付着防止装置１を設置可能にする。
【００６９】
可動式の陽極部材導電体２，１３や陰極側導電体３の可動部をゴムシート状、ロールカーテン状、シャッター状、格子状等の形状にすることにより、挿入・設置および取外し・回収が容易となる。また、可動式の陽極部材導電体２や陰極側導電体３の予備品を保有し早急な復旧を行う場合は、予備品が小型であることから、収納場所の小型化が可能となり、交換作業が容易になる。可動式の陽極部材導電体等の異常が確認された場合においても、装置の早急な取替が可能となる。
【００７０】
本発明に係る海生物の付着防止装置１を複数個設置する場合に、同型の可動部であれば、隣接する複数の付着防止装置１の可動部として、共用することが可能であり、予備も共用にして保有個数を少なくすることが可能となる。
【００７１】
本発明に係る海生物の付着防止装置の第８実施形態は、海生物の付着防止装置１において、陽極部材導電体２または陰極側導電体３等を含む可動式変形可能構造物を水路または水槽３５の壁面に引き付けるように壁面側を負圧とする負圧システム２１を備えている。
【００７２】
例えば、図９に示すように、負圧システム２１は、陽極部材導電体２の壁面側の周囲にゴム状シール等の弾性２３を貼り、吸引装置２２にて弾性シール２３で囲まれた内部の空気または海水を吸い込んで負圧とすることで、陽極部材導電体２を水路または水槽３５の壁面へ引き寄せ、その壁表面に貼り付けて固定させることが可能である。
【００７３】
図１０は本発明に係る海生物の付着防止装置の第９実施形態を示す。この実施形態に示された海生物の付着防止装置１は、可動式で変形可能な陽極部材導電体や陰極側導電体を巻き取り、または引抜いて、水路または水槽３５から回収する回収装置２４を備えている。
【００７４】
例えば、図１０に示す回収装置２４により、水路または水槽３５に設置されたロールカーテン状の陽極部材導電体１３を巻き取って引き上げ、回収することができる。また、同様に、図５および図６に示されるシャッター状の可動式構造物（陽極部材導電体）１５や格子状の可動式構造物（陽極部材導電体）１６を巻き取って、あるいは引抜いて折りたたむこと等により、また、図１、図３、図７に示すような陽極部材導電体２、１２を引抜いて回収することができる。
【００７５】
従来の海生物の付着防止の装置においては、水路に付着防止装置が固定されていることから、海生物の付着防止装置の清掃・点検・修理（メンテナンス）は、水抜きを行った場合のみ行われ、それ以外は実施不可能であった。これに対し、本発明に係る海生物の付着防止装置においては、回収装置により陽極部材導電体などの可動式変形可能構造物を回収できる構造とすることで、水路や水槽３５の水を抜くことなく、付着防止装置の清掃・点検・保守・取替え作業が可能となる。また、異常時においても可動式変形可能構造物を回収して、海生物の付着防止装置の健全性の確認作業が行える。
【００７６】
本発明に係る海生物の付着防止装置は、第９実施形態で示されるような回収装置２４を備えた海生物の付着防止装置１において、図１０のような回収装置２４により巻き取りまたは引抜いて、水路または水槽３５から回収された可動式変形可能造物を、回収装置２４内で洗浄するための洗浄システムを備えてもよい。
【００７７】
この可動式変形可能構造物の洗浄は、例えば、ジェット洗浄や、ブラシのような洗浄具による洗浄等によって行われる。このように、回収装置２４内で可動式変形可能構造物を洗浄することにより、清掃作業の効率化、洗浄水の削減、および洗浄水の飛散防止が図れる。
【００７８】
また、コンパクトに回収した可動部を回収装置２４内にて洗浄可能なシステムを有することにより、洗浄水・洗浄剤の飛散防止とその使用量の削減が可能であり、また洗浄水等の飛散がないので周辺清掃も不要となる。回収装置２４内に洗浄システムを有することにより、洗浄のための装置の搬出入が不要となることから、搬出入用冶具や作業が削減される。これら洗浄作業を自動で行うようにすれば、従来時間のかかっていた清掃作業を大幅な簡素化が可能となる。また可動部は洗浄後も小型化形状となっているので、そのまま取出して、予備品との取替え作業も容易になる。
【００７９】
また、海生物の付着防止装置の第１０実施形態は、回収装置２４を備えた海生物の付着防止装置１において、回収装置２４により回収された陽極部材導電体２や陰極側導電体３からなる可動式構造物は、カートリッジタイプ２５としてワンタッチで取り外し可能な構造を備えてもよい。
【００８０】
例えば、図１１に示すように、回収装置２４により巻き取られて回収された陽極部材導電体（または陰極側導電体）２５は、カートリッジ式の陽極部材導電体（または陰極側導電体）２５として、取り外される。このように、陽極部材導電体２や陰極側導電体３からなる可動式構造物をカートリッジタイプとし、予備のカートリッジタイプの可動式構造物と交換することにより早急に復旧される。
【００８１】
回収装置２４は独立した単独の装置として切り離すことが可能な構造とすることで、常時設置しておく必要性がないことから、回収装置２４の設置スペースの有効活用が図れ、共用によるコスト削減、また回収装置２４の予備を持つことにより、回収装置の故障時の早期対応が可能となる。
【００８２】
さらに海生物の付着防止装置は、図１０および図１１に示されるような回収装置２４を備えた海生物の付着防止装置１において、陽極部材導電体２や陰極側導電体３からなる可動式変形可能構造物を回収する回収装置２４を、着脱可能な構造とし、他の箇所に設置されている海生物の付着防止装置１の可動式構造物を回収する回収装置２４として共用される構造としてもよい。
【００８３】
また、海生物の付着防止装置は、海生物の付着防止装置１において、図１１に示すように、水路または水槽３５内を監視するための水中監視カメラ２６を備えてもよい。
【００８４】
水中監視カメラ２６が設置されている場合、陽極部材導電体２における酸素発生を阻害する障害の発見や、異常を目視にて確認することが可能である。その結果、水中監視カメラ２６と回収装置２４との併用により、陽極部材導電体２を早期に回収し、トラブルの未然防止および早期発見が可能となる。また、可動部が動作中の状況も目視で確認できることにより、安全を確認しながら作業を実施することができる。
【００８５】
広範な構造物に対しては、装置自体は回収作業等も考慮するとコンパクト性が必要であることから、本発明に係る海生物の付着防止装置を複数個並列に設置し運用することにより、より海生物付着防止の効果を発揮し、メンテナンス性が向上する。
【００８６】
水中監視カメラ２６を設置することにより、陽極部材導電体２での酸素発生状況や、可動式変形可能構造部の設置状況の確認を行って付着防止装置の健全性の向上を図ることができる。また、海水を漂う異物や藻類の付着の有無も監視することができる。
【００８７】
本発明に係る海生物の付着防止装置の監視においては、前記電流値ないし積算電流値の変化を監視することにより、陽極部材導電体２の性能劣化や、酸素発生に係わる異常を監視することが可能となる。
【００８８】
本発明に係る海生物の付着防止装置１の運用（取扱い）方法は、水路および水槽３５に対して挿入・取出しが可能な可動部を有する陽極部材導電体２（１３，１６）または陰極側導電体３からなる可動式導電体を自動または手動にて水路または水槽３５内に挿入し、挿入した可動式導電体と、この導電体２（１３，１６）とは異なる極の導電体３との間に電流を流すことにより、陽極部材導電体２（１３，１６）の有する電気化学的に活性な電気的触媒６を介して、海水中に塩素の発生を抑制しつつ酸素を発生させて、海水に接する構造物（水路および水槽）３５への海生物の付着を防止する。付着防止装置１の使用後には可動式導電体を自動または手動で水路または水槽３５内から回収することができる。
【００８９】
この運用（取扱い）方法においては、回収した可動式導電体を洗浄後、水路または水槽３５に挿入して再び海生物の付着防止に用いたり、洗浄後（または未洗浄で）取り外し、新たな可動式導電体と交換して海生物の付着防止装置１の運用が行われる。
【００９０】
このような運用方法においては、陽極部材導電体２（１３，１６）や陰極側導電体３を回収し、また洗浄を行うことにより、従来技術のように水抜きを行い水路内および水槽３５内へ作業員が入り、長距離に渡って清掃・点検することなく、容易にメンテナンスが可能となり、作業環境の改善および作業工数の短縮に大きく寄与することとなる。
【００９１】
また、電流監視装置９や判定装置１１、水中監視カメラ２６による監視方法を採用し運用することにより、従来において監視していなかった水路および水槽３５内の健全性、および本発明の付着防止装置１の健全性が常時監視でき、電流監視装置９や判定装置１１にて変化があった場合に、即座に原因究明および修理対応が可能となる。この場合に回収を同時に行うことにより、水路の状態に係わらず、調査を行うことが可能となり、より迅速な調査・修理対応が可能となる。
【００９２】
さらに、本発明に係る海生物の付着防止装置１を水路または水槽３５内に複数個並列に設けたり、また、各海生物の付着防止装置１の回収装置２４が単独に取り外され、各海生物の付着防止装置１の可動部も回収されるように運用することもできる。
【００９３】
これにより、構造物の広範な箇所に対し海生物の付着防止が図れ、また、回収装置２４や可動部を常時設置しておく必要がないため、回収装置２４等の設置スペースの有効活用や、回収装置２４および可動部の共用によるコスト削減、さらに予備品を持つことによる故障時等の早期対応が可能となる。
【００９４】
【発明の効果】
本発明によれば、広範な面積を有する構造物や、常時水没する箇所の構造物に対する取付が可能であり、取付施工が容易な海水に接する構造物への海生物の付着防止装置およびこの運用方法を提供することができる。
【００９５】
また、本発明に係る海生物の付着防止装置およびこの運用方法は、付着防止装置設置後に水路および水槽内に設置された可動部を回収できる回収装置を備えることにより、点検・保守・清掃が容易に、かつ水抜きを行うことなく実施されるので、付着防止装置の健全性およびメンテナンス性の向上、作業工数の削減が可能となる。
【００９６】
さらに、本発明に係る海生物の付着防止装置およびこの運用方法によれは、電流および積算電流による監視装置およびその監視結果の判定装置、また水中監視カメラ等の監視システムを備えることにより、広範な箇所の健全性を容易にかつ迅速に確認し、即座に点検・修理を行うことが可能となる。
【図面の簡単な説明】
【図１】本発明に係る海生物の付着防止装置の第１実施形態を示す概略図。
【図２】図１に示す海生物の付着防止装置における陽極部材導電体の概略図。
【図３】本発明に係る海生物の付着防止装置の第２実施形態を示す概略図。
【図４】本発明に係る海生物の付着防止装置の第３実施形態を示す概略図。
【図５】本発明に係る海生物の付着防止装置の第４実施形態を示す概略図。
【図６】本発明に係る海生物の付着防止装置の第５および第６実施形態を示す概略図。
【図７】本発明に係る海生物の付着防止装置の第６および第７実施形態を示す概略図。
【図８】本発明に係る海生物の付着防止装置の第７実施形態を示す概略図。
【図９】本発明に係る海生物の付着防止装置の第８実施形態を示す概略図。
【図１０】本発明に係る海生物の付着防止装置の第９実施形態を示す概略図。
【図１１】本発明に係る海生物の付着防止装置の第１０実施形態を示す概略図。
【符号の説明】
１海生物の付着防止装置
２陽極部材導電体（陽極部材）
２ａ、２ｂ陽極部材導電体要素
３陰極側導電体（陰極部材）
４照合電極
５陽極形成部材
６電気的触媒
７支持体
８外部直流電源
８ａ正極
８ｂ負極
８ｃ照合極
８ｄ自動電位制御部
９電流監視装置
１１判定装置
１２絶縁材
１３ロールカーテン状の陽極部材導電体（陽極部材）
１４錘
１５シャッター状の陽極部材導電体（陽極部材）
１６格子状の陽極部材導電体（陽極部材）
１７ガイド
１８スロープ付ガイド
２１負圧システム
２２吸引装置
２３ゴム状シール
２４回収装置
２５カートリッジ式陽極部材導電体（または陰極側導電体）
２６水中監視カメラ
３０海水
３５水路または水槽（絶縁体）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for preventing the adhesion of marine organisms to prevent the adhesion of marine organisms to the surface of structures such as intake channels, drainage channels and water tanks for handling seawater, and a method for operating the same.
[0002]
[Prior art]
In the past, seawater such as mussels, barnacles, hydro-insects, seaweeds, etc. have been used in intake channels and drainage channels or tanks that handle seawater in various plants such as nuclear power plants, thermal power plants, combined cycle power plants, and chemical plants. It adheres to the surface, causing problems with the amount of seawater intake and the inflow of marine life into the plant system.
[0003]
In order to prevent the attachment of marine organisms, antifouling coating may be applied to the surface of the canal, but in reality, marine organisms gradually adhere to the walls of the aqueduct due to peeling off of the antifouling coating or performance deterioration due to aging. There is an event that the water channel is narrowed and the pressure loss of seawater increases and the amount of seawater intake decreases over time.
[0004]
The removal work of these marine life from the circuit wall surface and the repainting of antifouling paint on the surface of the waterway must be performed within the limited inspection period when the plant operation is stopped. The paint drying time is also required.
[0005]
In addition, because the working area is narrow in the waterways and tanks, and the working environment is inferior due to the bad smell caused by the extinction of marine life, the inspection and cleaning work in these waterways and water tanks is a tough work including time and environment. ing. In recent years, since the plant inspection period has been shortened year by year, the water channel and tank cleaning / inspection process also affects the plant inspection period itself.
[0006]
In some cases, as an anti-adhesion measure for marine life structures (waterways, tank wall surfaces), chlorine is injected into seawater, or antifouling paints containing pigments that produce toxic ions are used. Production of toxic ions such as chlorine and copper by electrolysis of seawater has been implemented. These exhibit an effective antifouling effect, but they are likely to cause environmental pollution, and are now in a direction to suppress their use.
[0007]
Instead, silicone-based antifouling paints have been used recently, but the cost is high and many layers are used for undercoating and intermediate coating. Not suitable for location application. Also, if foreign matter comes into contact with the wall surface of the water tank where the silicone-based antifouling paint is applied, the coating film will be easily peeled off. Although the antifouling effect is also reduced, such a paint is currently used.
[0008]
Furthermore, in the case of water intake from the sea, there are many places where it is impossible to drain seawater in the vicinity of the water intake or its intake channel unless it is in the early stage of construction. Conventionally, the attachment of marine organisms to such places has been taken for granted, and intake pumps and intake systems have been designed in consideration of the increased pressure loss in the water channel.
[0009]
Japanese Patent Application Laid-Open No. 2000-119884 describes an antifouling device for a structure in contact with seawater. The antifouling device comprises an anode forming member provided on a seawater side surface of a structure in contact with seawater via an insulating adhesive, and an electrochemically active and stable electrocatalyst coated on the anode forming member. A conductor installed in contact with seawater, and a positive electrode connected to an anode forming member or an electrocatalyst, a negative electrode connected to the conductor, and an external direct-current power source incorporating an automatic potential control unit. The DC power supply is a structure antifouling device in which the potential between the positive electrode and the negative electrode is set to a value that generates oxygen while suppressing the generation of chlorine in seawater.
[0010]
This antifouling device is a device that prevents adhesion of marine organisms by generating oxygen in seawater. In principle, this can also be used in waterways and aquariums, and it is thought that inspection and cleaning work will be reduced due to the effect of preventing the attachment of marine organisms, but it has not yet been put into practical use as an antifouling device for waterways and water tanks That's not enough.
[0011]
Japanese Patent Application Laid-Open No. 2001-115427 describes an antifouling device for a seawater contact structure capable of grasping the state of antifouling performance and a performance deterioration monitoring method thereof. This antifouling device and its performance deterioration monitoring method prevent adhesion of marine organisms by generating oxygen in seawater.
[0012]
[Problems to be solved by the invention]
When the antifouling device for a structure in contact with seawater described in Japanese Patent Application Laid-Open No. 2000-119884 is installed in a water channel / water tank, the following problems arise.
[0013]
First, in this antifouling device, it is necessary to install the anode forming member of the antifouling device with an adhesive on the surface of the water channel or water tank. In order to provide this antifouling device, it is necessary to drain water in the water channel and the water tank, which involves extensive preparation. In addition, it is impossible to install an antifouling device in a place where water cannot be drained structurally, such as a waterway connected to the sea, except during construction of the waterway. In addition, when an antifouling device is installed during construction of a waterway or the like, since the water cannot be drained thereafter, the antifouling device cannot be maintained.
[0014]
Secondly, since the water channel and the water tank have a large surface area, if the antifouling device is installed on the entire surface of the water channel and the water tank with an adhesive, a work period is required and it becomes difficult to cope within the limited inspection period.
[0015]
Third, because the location of the antifouling device is submerged, if the antifouling device fails or malfunctions and you want to collect and check the antifouling device, drain all water from the waterway / aquarium. There is a need. However, since this draining operation is large and it is not possible to drain only for this antifouling device, it is necessary to confirm according to the draining time in the inspection period of the plant. Therefore, it cannot respond until the plant inspection period, which causes a problem in terms of reliability of the antifouling device.
[0016]
Fourth, because the inspection period of the plant is limited for maintenance and inspection, maintenance and inspection work for all antifouling devices installed in a wide range of waterways and aquariums should be completed within the inspection period. It is difficult.
[0017]
Further, the antifouling apparatus and the performance deterioration monitoring method described in Japanese Patent Application Laid-Open No. 2001-115427 are antifouling apparatuses for installing an anode-side conductor on a structure with an adhesive via an insulating material. Therefore, it is assumed that the antifouling device is installed after draining the installation location, and it is impossible to install the antifouling device at a location that is constantly submerged. For this reason, it has the same problem as the antifouling device disclosed in Japanese Patent Application Laid-Open No. 2000-119884.
[0018]
The present invention has been made in consideration of such problems of the prior art, and can satisfactorily prevent sea products from adhering to the surface of structures such as waterways and aquariums. It is an object of the present invention to provide an apparatus for preventing adhesion of marine organisms that can be attached to and taken out from a wide range of structures regardless of whether or not the water can be drained, and an operation method thereof.
[0019]
Another object of the present invention is to provide an apparatus for preventing the attachment of marine organisms and a method for operating the same, which can reduce the removal work of marine life on a wide range of structures, shorten the inspection period, and improve the reliability of the apparatus. .
[0020]
[Means for Solving the Problems]
In order to solve the above-described problem, the marine organism adhesion preventing apparatus according to the present invention generates marine organisms on a structure in contact with seawater by generating oxygen in seawater as described in claim 1. In the sea life adhesion prevention device for suppressing seawater, an anode member conductor comprising an anode forming member and an electrochemically active electrocatalyst coated on the anode forming member is in contact with the seawater side front surface of the structure A positive electrode of an external DC power source having a built-in automatic potential controller, the anode member conductor installed so that the electric catalyst faces the seawater side, a cathode side conductor installed so as to contact the seawater The anode member conductor is connected to an anode forming member or an electric catalyst, and the negative electrode is connected to the cathode-side conductor, and the external DC power source has a potential between the positive electrode and the negative electrode. Suppresses the generation of chlorine in seawater And at least one of the anode member conductor and the cathode-side conductor installed in the water channel and in the water tank is from above the water channel and water tank. A movable part that can be inserted and removed A guide for guiding the movable part inserted into and removed from the water channel or the water tank from above. Is.
[0021]
In order to solve the above-described problem, the sea life adhesion prevention device according to the present invention is such that, as described in claim 2, the cathode-side conductor is integrated with the anode member conductor through an insulating material. It has a structure, and this monolithic structure has a movable part that can be inserted and removed from the upper part with respect to the water channel and the water tank, Claim 3 or 4 As described above, the movable part of the anode member conductor, the cathode-side conductor, or the integral structure of these conductors is not a shape like a single steel plate, but a rubber sheet that can be deformed. Like a roll curtain or grid A shape is preferable.
[0022]
Furthermore, in order to solve the above-described problem, the sea life adhesion preventing apparatus according to the present invention includes a weight at a lower part of the movable part, or a conductor of the movable part. Is configured to play the role of a weight, As described in claim 6, the guide has the movable portion. Waterways and aquariums It is a guide with a slope having a slope to smoothly guide to the bottom part of ,further, Claim 7 In order to draw the movable part to the water channel and the wall surface of the water tank, the negative pressure system that makes the wall surface a negative pressure is provided.
[0023]
In addition, in order to solve the above-described problems, the sea life adhesion preventing apparatus according to the present invention is Claim 8 As described above, a recovery device that winds up or pulls out the movable part and recovers it from the water channel and the water tank is provided. further, Claim 9 As described above, the recovery device preferably has a cleaning system for cleaning the recovered movable part, Claim 10 As described above, it is preferable that the collected movable part has a structure that can be detached and replaced as a cartridge type.
[0024]
In addition, in order to solve the above-described problems, the sea life adhesion preventing apparatus according to the present invention is Claim 11 As described above, it is preferable that the recovery device is detachable and has a structure shared as a recovery device for recovering the movable part of the marine organism adhesion prevention device installed at another location.
[0025]
Furthermore, the sea creatures adhesion prevention device according to the present invention, Claim 12 As described in, it is equipped with an underwater surveillance camera, Claim 13 As described above, and a current monitoring device that monitors the current flowing through the anode member conductor, and a determination device that determines the durability of the anode member conductor based on the monitoring result from the current monitoring device, , Claim 14 As described above, the determination device determines the durability of the anode member conductor based on the integrated current value monitored by the current monitoring device.
[0026]
In order to solve the above-described problem, the operation method of the sea life adhesion prevention apparatus according to the present invention is as follows. Claim 15 In the method of operating a marine organism adhesion prevention device that suppresses the formation of marine organisms on structures that are in contact with seawater by generating oxygen in the seawater, as described in Insert / remove from top At least one of the anode member conductor and the cathode-side conductor having a movable portion capable of being used as a movable conductor, and the movable conductor is placed in a water channel or a water tank Insert it with a guide from the top, By passing an electric current between the inserted movable conductor and a conductor having a different polarity, it flows into the seawater through the electrochemically active electrocatalyst of the anode member conductor. Oxygen is generated while suppressing generation of chlorine to suppress adhesion of marine organisms to structures, and then the movable conductor is removed from the waterway or tank. Take it out from the top with a guide, It is a method to collect.
[0027]
In order to solve the above-described problem, the operation method of the sea creature adhesion prevention device according to the present invention is as follows. Claim 16 As described above, the recovered movable conductor is jet-washed or washed with a brush, and Claim 17 As described above, the collected movable conductor is removed, or the removed movable conductor is attached or replaced with a new movable conductor. Claim 18 As described above, when the oxygen is generated, the current flowing through the anode member conductor is monitored, and the durability of the anode member conductor is determined based on the monitoring result.
[0028]
Moreover, in order to solve the above-described problem, the operation method of the sea creature adhesion prevention device according to the present invention Claim 19 In the method of operating a marine organism adhesion prevention device having a recovery device, a plurality of marine organism adhesion prevention devices are provided in a water channel or in a water tank, and the recovery device of each marine organism adhesion prevention device is provided. This is a method in which the movable part of the anti-adhesion device for each marine organism is also recovered.
[0029]
Furthermore, the operation method of the sea life adhesion prevention apparatus according to the present invention is as follows: Claim 20 As described in Claims 1-14 In the method of operating the marine organism adhesion prevention device described in any of the above, the marine organism adhesion prevention device is used by providing a plurality of the marine organism adhesion prevention devices in parallel in the water channel or the water tank.
[0030]
According to the sea life adhesion prevention apparatus and the operation method of the sea life adhesion prevention apparatus according to the present invention, the anode member conductor or the cathode side conductor is connected to the water channel and the water tank. Guide with the guide from the top Since it has a movable part that can be inserted and removed, it can be attached to and taken out from a wide range of structures regardless of whether water can be drained from the installation location. The
[0031]
Further, the movable part is a rubber sheet, Roll curtain, lattice By adopting this shape, collection and installation work becomes easy, and the storage space after collection becomes compact. By washing in the apparatus with this compact shape, it is possible to improve the efficiency of the cleaning work and prevent the washing water from splashing. When the collected shape is a detachable shape with a cartridge type, it can be quickly restored by replacing it with a spare cartridge type device. Moreover, it becomes possible to share as a collection | recovery apparatus which collect | recovers the movable part of the marine organism adhesion prevention apparatus installed in plural by attaching or removing the collection | recovery apparatus of a movable part.
[0032]
Furthermore, the marine organism adhesion prevention apparatus according to the present invention includes a current monitoring device that monitors the current flowing through the anode member conductor and the integrated current value, and a determination device that determines the durability of the anode member conductor based on this measurement change. Thus, it is possible to reliably grasp the useful state (soundness, performance deterioration, etc.) of the anode member conductor, and it is an effective means for judging the maintenance time due to the performance deterioration of the anode member conductor. By these, it becomes possible to prevent adhesion and growth of marine organisms. By providing the current monitoring device and the determination device, it is possible to prevent abnormal corrosion of a copper member that comes into contact with seawater that occurs when a conductive foreign substance drifting in seawater is caught by the seawater contact structure.
[0033]
In addition, by installing an underwater surveillance camera in the sea life adhesion prevention device according to the present invention, the sound generation can be improved by confirming the oxygen generation status of the anode member conductor and the installation status of the movable part. Can do. In addition, it is possible to monitor the presence or absence of foreign matter or algae adhering to seawater, and it is possible to detect the cause of the abnormal state at an early stage together with changes in the current value and integrated current value in the anode member conductor.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a marine organism adhesion preventing apparatus according to the present invention will be described below with reference to the accompanying drawings.
[0035]
As a structure in contact with seawater in the sea life adhesion prevention device and its operation method of the present invention, seawater flows, a water tank for storing seawater, a water chamber, or other seawater flows in or is in contact with seawater. If it is a structure and the objective of this invention is achieved, the shape of a structure, a material, etc. will not be restrict | limited.
[0036]
FIG. 1 is a schematic view showing an example of a marine organism adhesion preventing apparatus according to the present invention.
[0037]
With reference to FIG. 1, 1st Embodiment of the adhesion prevention apparatus of the sea life which concerns on this invention is described. As shown in FIG. 1, the marine organism adhesion prevention device 1 generates oxygen in the seawater 30 to suppress the growth of marine life on a structure 35 such as a water channel or a water tank in contact with the seawater 30. Is. The marine organism adhesion prevention apparatus 1 includes an anode member conductor 2 as an anode member, a cathode-side conductor 3 as a cathode member in contact with the seawater 30, and an external DC power source 8 including an automatic potential control unit 8d. .
[0038]
The external DC power supply 8 has its positive electrode 8 a connected to the anode member conductor 2 and its negative electrode 8 b connected to the cathode-side conductor 3. A reference electrode 4 is provided in the seawater and is connected to the reference electrode 8 c of the external DC power supply 8.
[0039]
As shown in FIG. 2, the anode member conductor 2 includes an anode forming member 5 and an electric catalyst 6 that covers the surface of the anode forming member 5. The electrocatalyst 6 is an electrochemically active and stable catalyst. For example, the electrocatalyst 6 is preliminarily coated on the anode forming member 5 by a catalyst coating treatment, and is heated at 350 to 450 ° C. for several hours by electric resistance heating or the like. It has been heat activated. As the electrocatalyst 6, for example, a single body, a mixed crystal, or a composite selected from platinum-based metals, platinum-based metal oxides, and cobalt or manganese oxides can be used.
[0040]
The anode member conductor 2 is a structure in contact with the seawater 30 such that the coating layer of the electrocatalyst 6 is on the seawater 30 side and the layer of the anode forming member 5 is on the wall surface side of the structure (water channel or water tank) 35. It is installed in front of the seawater 30 contact side of the water channel or water tank) 35. Moreover, the anode member conductor 2 can be composed of a plurality of anode member conductor elements 2a and 2b, for example, as shown in FIG.
[0041]
In FIG. 1, the positive electrode 8 a of the external DC power supply 8 is connected to the anode forming member 5 of the anode member conductor 2. Instead, the positive electrode 8 a of the external DC power supply 8 is connected to the electric catalyst 6. Also good. Since the anode member conductor 2 is composed of a plurality of anode member conductor elements 2a and 2b, a corresponding positive electrode 8a is provided for each anode member conductor element 2a and 2b.
[0042]
The external DC power supply 8 includes an automatic potential control unit 8d, and a positive electrode so as to generate oxygen without substantially generating chlorine gas in seawater via the electric catalyst 6 of the anode member conductor 2. The electric potential of the energizing circuit formed between 8a and the negative electrode 8b is controlled. The potential value of the energization circuit formed between the positive electrode 8a and the negative electrode 8b of the external DC power supply 8 is lower than about 1.13V of the chlorine generation potential (SCE) for generating chlorine gas in standard seawater, and is standard. A value higher than about 0.52 V of the oxygen generation potential for generating oxygen in seawater is used.
[0043]
Further, the specific current value of the energization circuit formed between the positive electrode 8a and the negative electrode 8b of the external DC power supply 8 is slightly different depending on the type of the electric catalyst 6, but usually 0.3 to 3 .0A / m ² A current value of about is used. The potential value of the verification electrode 8c is used to calibrate the automatic potential controller 8d with the seawater potential.
[0044]
Thus, according to the apparatus 1 for preventing adhesion of marine organisms, the anode member conductor 2 is installed on the front surface of the side wall surface of the seawater 30 of the water channel or the water tank 35, and the cathode side conductor 3 is installed so as to be in contact with the seawater 30. Then, by passing an electric current between the anode member conductor 2 and the cathode-side conductor 3 under a predetermined condition, oxygen is generated in the sea water side front surface of the water channel or the water tank 35, and the sea water side surface of the water channel or the water tank 35 It is possible to prevent sea creatures from attaching to the sea.
[0045]
Further, in the marine organism adhesion prevention device 1, at least one of the anode member conductor 2 and the cathode-side conductor 3 installed in the structure (water channel or water tank) 35 is placed in the water channel and water tank 35. On the other hand, the movable structure has a movable part that can be inserted and removed from the upper part. For example, the anode member conductor 2 in FIG. 1 has a movable conductor insertion / removal structure that is inserted into a water channel or a water tank 35 from above and can be taken out again from above. In FIG. 1, the movable anode member conductor 2 is spaced from the wall surface of the water channel / water tank 35 by the space of the anode member conductor 2 so that the movable anode member conductor 2 is securely inserted and installed at a predetermined position. A support 7 is provided on the bottom surface of the water tank 35. In place of the support 7 or in combination with the support 7, the anode member conductor 2 can be easily inserted (installed) and removed from the upper part of the water channel 35 using a fixture or the like that can be easily attached to a predetermined location. The anode member conductor 2 may be installed.
[0046]
Further, as shown in FIG. 1, the sea life adhesion prevention device includes a current monitoring device 9 that monitors the current flowing through the anode member conductor 2 in the sea life adhesion prevention device 1, and the monitoring from the current monitoring device 9. The determination apparatus 11 which determines the durable state of the anode member conductor 2 based on a result is provided.
[0047]
For example, as shown in FIG. 1, a current monitoring device 9 is connected to each positive electrode 8a of the external DC power supply 8, so that the current flowing through each anode member conductor element 2a, 2b can be monitored. It has become. Furthermore, a determination device 11 is connected to the current monitoring device 9, and output data from the current monitoring device 9 (accumulated current value of current flowing through each anode member conductor element 2a, 2b or change in current value) is displayed. Based on this, it is possible to determine the serviceability state (soundness, performance degradation, etc.) of each anode member conductor element 2a, 2b.
[0048]
The determination device 11 relatively compares the change in the current value monitored by the current monitoring device 9 between the respective anode member conductor elements 2a and 2b, and considers the comparison result, and each anode member conductor element 2a. The durability state of each anode member conductor element 2a, 2b is determined based on the change in current value for each 2b. The determination result in the determination device 11 is output to the external DC power supply 8, and the current supply from the external DC power supply 8 to the anode member conductor elements 2a and 2b is interrupted.
[0049]
In addition, when a change in the current value or the integrated current value is monitored, the underwater monitoring camera performs a visual check in the installed state of the sea creature adhesion prevention device 1 and without draining the water. Thus, the collection operation of the adhesion preventing device 1 is performed.
[0050]
As described above, according to the embodiment of the apparatus for preventing adhesion of marine organisms according to the present invention, the potential of the anode member conductor 2 and the electric catalyst 6 is not less than the oxygen generation potential (about 0.52 V) by the external DC power supply 8. The chlorine generation potential (about 1.13 V) or less is maintained. Thereby, oxygen is generated from the surface of the electrocatalyst 6 while the generation of chlorine is suppressed. Thereby, adhesion of marine life to the structure (water channel or water tank) 35 can be positively and effectively prevented.
[0051]
Moreover, the anode member conductor 2 and the cathode-side conductor 3 have a movable structure, so that the anode member conductor 2 and the cathode-side conductor 3 can be installed in a place where the water is always submerged. In the case of water intake from the sea, there are many places where seawater cannot be drained unless it is in the early stages of construction near the water intake or its intake channel. ing. Conventionally, intake pumps and systems have been designed taking into account the water channel pressure loss due to marine organism adhesion, and methods such as chlorine injection have been adopted in some cases.
[0052]
On the other hand, the sea life adhesion prevention apparatus 1 of the present invention can be installed in the above-described places, and contributes to the reduction of the influence of sea life on the system design and the improvement of the environment.
[0053]
Conventionally, marine organisms attached to the structure may flow into the system and adversely affect the device. However, the installation of the marine organism adhesion prevention device 1 according to the present invention causes the marine organism to be attached to the structure 35. Since sea life can be prevented, the inflow of sea life into the plant system can be reduced, and the soundness of the equipment can be improved.
[0054]
FIG. 3 shows a second embodiment of an apparatus for preventing the adhesion of marine organisms according to the present invention. In this embodiment, the anode member conductor 2 and the cathode-side conductor 3 are integrally formed with an insulating material 12 interposed therebetween. And attached to the side wall of the structural member 35 such as a water channel. For example, as shown in FIG. 3, the insulating material 12 is a flexible base that can be bent, and is installed on the base (insulating material) 12 so that the anode member conductor 2 and the cathode-side conductor 3 do not come into contact with each other. It is configured.
[0055]
This integral structure has a movable insertion / removal structure that can be inserted / removed from the upper part of the water channel 35 and the like, and is installed on the sea water side front surface of the water channel 35.
[0056]
By adopting such an integrated structure, the work of inserting / extracting the anode member conductor 2 and the cathode-side conductor 3 from / to the water channel 35 and the like and the workability of the maintenance work are also improved.
[0057]
This marine organism adhesion prevention device 1 has a structure in which a movable anode member conductor 2 or a cathode side conductor 3 that can be inserted into and removed from a water channel 35 can be deformed into a curved shape. .
[0058]
For example, an anode member conductor having a flexible structure such as a rubber sheet or a roll curtain, a cathode side conductor, or a conductor having an integral structure of the anode member conductor and the cathode side conductor as described above.
[0059]
FIG. 4 shows a roll curtain-like anode member conductor 13. By having a movable portion that can be curved or curved as described above, the work of inserting and extracting the anode member conductor 13 and the like into the water channel 35 is facilitated. In addition, since these movable structures can be wound up and stored in a roll shape, the storage shape becomes compact, the collection device for recovering the movable structures can be downsized, and the effective use of the surrounding space can be achieved. It becomes possible. In addition, the code | symbol 14 in FIG. 4 is the weight (weight) attached to the front end side of movable parts, such as the movable anode member conductor 13. FIG. By attaching a weight to the movable part of the anode member conductor 13, the movable structure such as the anode member conductor 13 can be smoothly inserted into the water channel 35 and is securely fixed to the installation position.
[0060]
FIG. 5 shows a fourth embodiment of the apparatus for preventing adhesion of marine organisms according to the present invention. This embodiment has a structure in which the movable anode member conductor 15 and the movable cathode-side conductor 3 can be deformed into a curved shape or a structure having a degree of freedom in the sea life adhesion prevention apparatus 1. is there. For example, the movable anode member conductor 15 or the cathode side conductor 3 is a structure that can be deformed by combining a plurality of members. Specifically, a configuration having a shutter-like structure (fourth embodiment) or a lattice-like structure may be adopted. The anode member conductor 15, the cathode side conductor 3, or the anode member conductor 15 and the cathode side conductor 3 are configured as a conductor having an integral structure that can be bent and deformed.
[0061]
In FIG. 5, the anode member conductor 15 is a shutter-like or snake-like anode member conductor 15, and has a structure that can be deformed into a curved shape or a curved shape. A weight 14 is provided on the distal end side (free end side) of the movable part of the anode member conductor 15.
[0062]
FIG. 6 shows a fifth embodiment of the apparatus for preventing adhesion of marine organisms according to the present invention. In this adhesion preventing device, the anode member conductor 16 is a grid-like anode member conductor 16 and has a structure having a degree of freedom. A weight 14 is provided on the movable portion of the anode member conductor 16.
[0063]
These fourth and fifth embodiments also have the same effects as the third embodiment. That is, it becomes easy to insert and pull out a movable (flexible) deformable structure such as an anode member conductor into the water channel 35, and the storage shape of the movable deformable structure becomes compact. As will be described later, it is possible to reduce the size of the recovery device that recovers the movable deformable structure and to effectively use the surrounding space.
[0064]
The sixth embodiment of the marine organism adhesion prevention apparatus according to the present invention is the marine organism adhesion prevention apparatus 1 in which a weight is provided below the structure including the movable deformable anode member conductor 2 and the cathode side conductor 3. 14 or the movable deformable structure itself is configured to serve as a weight. Thereby, it becomes easy to insert the movable deformable structure into the water channel 35, and the movable structure can be reliably fixed at the installation position. For example, as shown in FIGS. 4, 5, 6, and 10, weights 14 can be provided on various anode member conductors such as anode member conductors 13, 15, and 16. Further, like the various anode member conductors shown in FIGS. 1, 3, 7, 8, and 9, the movable structure of the anode member conductor itself is configured to serve as a weight. .
[0065]
The seventh embodiment of the sea life adhesion prevention apparatus according to the present invention is the sea life adhesion prevention apparatus 1 in which the movable deformable structure comprising the anode member conductor 2 and the cathode side conductor 3 is connected to the water channel 35. Thus, guides 17 and 18 for movable deformable structures are provided to facilitate insertion and removal. The guide is a guide 17 for guiding the movable deformable structure to the installation location on the wall surface of the water channel 35, and has a slope for smoothly moving the movable deformable structure to the bottom surface of the water channel 35. It is good also as the guide 18 with a slope.
[0066]
For example, as shown in FIG. 7, the guide 17 for guiding to the installation location of the wall surface of the water channel 35 on both sides of the anode member conductor 2, or, for example, as shown in FIG. Can be used as the guide 18 with the slope for smoothly guiding the water to the bottom surface of the water channel 35.
[0067]
Further, the weight 14 is attached to the movable parts of the anode member conductors 2 and 13 and the cathode side conductor 3 of the sea life adhesion prevention apparatus 1 of the present invention, or the movable anode member conductors 2 and 13 are movable. Further, by setting the weight such that the cathode-side conductor can be installed by its own weight, and further installing the guide 17 and the guide 18 with the slope, the movable part can be attached to a certain place. The anti-adhesion device 1 can be installed even in a submerged location that cannot be attached by the conventional technique.
[0068]
By having the guide 17 and the guide 18 with the slope, it is possible to insert into a more accurate place, and it is stably fixed after installation and the soundness is improved. Moreover, in the guide 18 with a slope, the marine organism adhesion prevention apparatus 1 of this invention can be installed also in the location which cannot be performed only with the weight 14, and the bottom face of a waterway and a water tank.
[0069]
By making the movable parts of the movable anode member conductors 2 and 13 and the cathode-side conductor 3 into a rubber sheet shape, a roll curtain shape, a shutter shape, a lattice shape, etc., it is easy to insert, install, remove and collect It becomes. Also, if you have spare parts for the movable anode member conductor 2 or cathode side conductor 3 and want to restore them quickly, the spare parts are small, so the storage space can be downsized and replacement work Becomes easier. Even when an abnormality of the movable anode member conductor or the like is confirmed, the apparatus can be quickly replaced.
[0070]
In the case where a plurality of sea life adhesion prevention devices 1 according to the present invention are installed, if they are movable parts of the same type, they can be shared as movable parts of a plurality of adjacent adhesion prevention devices 1, and spares are also available. It becomes possible to share and reduce the number of possessions.
[0071]
The eighth embodiment of the sea life adhesion prevention apparatus according to the present invention is the sea life adhesion prevention apparatus 1 in which a movable deformable structure including the anode member conductor 2 or the cathode side conductor 3 is replaced with a water channel or a water tank. The negative pressure system 21 which makes a wall surface a negative pressure is provided so that it may attract to 35 wall surfaces.
[0072]
For example, as shown in FIG. 9, the negative pressure system 21 includes an elastic 23 such as a rubber seal around the wall surface side of the anode member conductor 2, and an internal portion surrounded by the elastic seal 23 by the suction device 22. By sucking air or seawater into a negative pressure, it is possible to draw the anode member conductor 2 to the water channel or the wall surface of the water tank 35 and affix it to the wall surface and fix it.
[0073]
FIG. 10 shows a ninth embodiment of an apparatus for preventing the adhesion of marine organisms according to the present invention. The marine organism adhesion prevention apparatus 1 shown in this embodiment includes a recovery device 24 that winds or pulls out a movable and deformable anode member conductor or cathode-side conductor and recovers it from a water channel or a water tank 35. I have.
[0074]
For example, the roll curtain-shaped anode member conductor 13 installed in the water channel or the water tank 35 can be wound up, pulled up and collected by the collection device 24 shown in FIG. Similarly, the shutter-like movable structure (anode member conductor) 15 and the grid-like movable structure (anode member conductor) 16 shown in FIGS. 5 and 6 are wound up or pulled out. By folding or the like, the anode member conductors 2 and 12 as shown in FIGS. 1, 3, and 7 can be pulled out and collected.
[0075]
In conventional marine organism adhesion prevention devices, the adhesion prevention device is fixed to the waterway, so cleaning, inspection and repair (maintenance) of the marine organism adhesion prevention device is performed only when water is drained. Otherwise, it was impossible to implement. On the other hand, in the marine organism adhesion prevention apparatus according to the present invention, the recovery device can recover movable movable deformable structures such as the anode member conductor, thereby draining water from the water channel and the water tank 35. This makes it possible to clean, inspect, maintain, and replace the anti-adhesion device. In addition, even when there is an abnormality, the movable deformable structure can be collected to check the soundness of the sea creature adhesion prevention device.
[0076]
The sea life adhesion prevention apparatus according to the present invention is a sea life adhesion prevention apparatus 1 having a recovery apparatus 24 as shown in the ninth embodiment, and is wound or pulled out by the recovery apparatus 24 as shown in FIG. A movable deformable structure recovered from the water channel or the water tank 35 may be provided with a cleaning system for cleaning in the recovery device 24.
[0077]
The movable deformable structure is cleaned by, for example, jet cleaning or cleaning with a cleaning tool such as a brush. As described above, by cleaning the movable deformable structure in the recovery device 24, it is possible to improve the efficiency of the cleaning operation, reduce the cleaning water, and prevent the cleaning water from scattering.
[0078]
In addition, by having a system that can clean the movable parts collected in a compact manner in the collection device 24, it is possible to prevent splashing of cleaning water and cleaning agent and to reduce the amount of use, and to prevent scattering of cleaning water, etc. There is no need to clean the surrounding area. By having the cleaning system in the collection device 24, it is not necessary to carry in / out the apparatus for cleaning, so that the carrying-in / out jigs and operations are reduced. If these cleaning operations are performed automatically, it is possible to greatly simplify the conventional cleaning operation. In addition, since the movable part has a reduced size even after cleaning, it can be taken out as it is, and replacement work with spare parts becomes easy.
[0079]
In addition, the tenth embodiment of the marine organism adhesion prevention device includes the anode member conductor 2 and the cathode side conductor 3 collected by the collection device 24 in the marine life adhesion prevention device 1 including the collection device 24. The movable structure may be provided with a structure that can be removed with one touch as the cartridge type 25.
[0080]
For example, as shown in FIG. 11, the anode member conductor (or cathode side conductor) 25 wound and collected by the collection device 24 is a cartridge type anode member conductor (or cathode side conductor) 25. , Removed. As described above, the movable structure including the anode member conductor 2 and the cathode-side conductor 3 is replaced with a cartridge type movable structure that is quickly restored by replacing it with a spare cartridge type movable structure.
[0081]
Since the collection device 24 has a structure that can be separated as an independent single device, it is not necessary to always install the collection device 24, so that the installation space of the collection device 24 can be effectively utilized, and cost reduction by sharing, Also, by having a spare recovery device 24, it is possible to respond quickly when the recovery device fails.
[0082]
Further, the marine organism adhesion prevention apparatus is a movable deformation comprising the anode member conductor 2 and the cathode side conductor 3 in the marine organism adhesion prevention apparatus 1 provided with the recovery device 24 as shown in FIGS. The recovery device 24 that recovers the possible structure may be a detachable structure, and may be shared as the recovery device 24 that recovers the movable structure of the marine organism adhesion prevention device 1 installed in another location. Good.
[0083]
In addition, the sea life adhesion prevention apparatus 1 may include an underwater monitoring camera 26 for monitoring the inside of the water channel or the water tank 35 in the sea life adhesion prevention apparatus 1 as shown in FIG.
[0084]
In the case where the underwater monitoring camera 26 is installed, it is possible to find a failure that obstructs oxygen generation in the anode member conductor 2 and to confirm an abnormality visually. As a result, by using the underwater monitoring camera 26 and the recovery device 24 in combination, the anode member conductor 2 can be recovered early, and trouble can be prevented and detected early. In addition, since the state in which the movable part is operating can be visually confirmed, the work can be performed while confirming safety.
[0085]
For a wide range of structures, the device itself needs to be compact when considering recovery work, etc., so by installing and operating a plurality of marine organism adhesion prevention devices according to the present invention in parallel, Demonstrates the effect of preventing marine organism adhesion and improves maintainability.
[0086]
By installing the underwater monitoring camera 26, it is possible to check the state of oxygen generation in the anode member conductor 2 and the state of installation of the movable deformable structure portion, thereby improving the soundness of the adhesion preventing device. In addition, it is possible to monitor the presence or absence of foreign matter or algae floating in seawater.
[0087]
In the monitoring of the marine organism adhesion prevention device according to the present invention, the deterioration of the performance of the anode member conductor 2 and the abnormality related to the generation of oxygen can be monitored by monitoring the change of the current value or the integrated current value. It becomes possible.
[0088]
The operation (handling) method of the marine organism adhesion prevention apparatus 1 according to the present invention is the anode member conductor 2 (13, 16) or the cathode side conductor having a movable part that can be inserted into and removed from the water channel and the water tank 35. A movable conductor composed of the body 3 is automatically or manually inserted into the water channel or the water tank 35, and the inserted movable conductor and the conductor 3 having a polarity different from that of the conductor 2 (13, 16). By passing an electric current between them, oxygen is generated while suppressing generation of chlorine in seawater through the electrochemically active electrocatalyst 6 possessed by the anode member conductor 2 (13, 16). It prevents the attachment of marine organisms to the structure (water channel and aquarium) 35 in contact with seawater. After the use of the adhesion preventing device 1, the movable conductor can be automatically or manually recovered from the water channel or the water tank 35.
[0089]
In this operation (handling) method, the collected movable conductor is washed and then inserted into the waterway or water tank 35 to be used again to prevent the attachment of marine life, or removed after washing (or unwashed) and newly moved. The operation of the marine organism adhesion prevention device 1 is performed by exchanging with the electric conductor.
[0090]
In such an operation method, the anode member conductor 2 (13, 16) and the cathode-side conductor 3 are collected and washed to drain water as in the prior art, and into the water channel and the water tank 35. Therefore, maintenance can be easily performed without cleaning and inspection over a long distance, which greatly contributes to improvement of the work environment and reduction of work man-hours.
[0091]
In addition, by adopting and operating a monitoring method using the current monitoring device 9, the determination device 11, and the underwater monitoring camera 26, the soundness in the water channel and the water tank 35 that has not been monitored in the past, and the adhesion preventing device 1 of the present invention. Can be monitored at all times, and when there is a change in the current monitoring device 9 or the determination device 11, the cause can be immediately investigated and repaired. By collecting at this time, it becomes possible to conduct an investigation regardless of the condition of the water channel, and a more prompt investigation / repair is possible.
[0092]
Further, a plurality of sea life adhesion prevention devices 1 according to the present invention are provided in parallel in the water channel or the water tank 35, and the recovery device 24 of each sea life adhesion prevention device 1 is detached independently, and each sea life It is also possible to operate so that the movable part of the anti-adhesion device 1 is also collected.
[0093]
As a result, it is possible to prevent adhesion of marine organisms to a wide range of structures, and since it is not necessary to always install the recovery device 24 and movable parts, effective use of the installation space of the recovery device 24, Costs can be reduced by sharing the recovery device 24 and the movable part, and early response can be made in the event of a failure by having spare parts.
[0094]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the attachment to the structure which has a wide area, and the structure of the location where it is always submerged is possible, and attachment of marine organisms to the structure which touches seawater which is easy to install, and its operation A method can be provided.
[0095]
In addition, the sea creature adhesion prevention device and the operation method according to the present invention include a collection device that can collect the movable part installed in the water channel and the water tank after the adhesion prevention device is installed, thereby facilitating inspection, maintenance, and cleaning. In addition, since it is carried out without draining water, it is possible to improve the soundness and maintainability of the adhesion preventing device and reduce the number of work steps.
[0096]
Furthermore, according to the marine organism adhesion prevention device and the operation method according to the present invention, a monitoring device using a current and an integrated current, a determination device for the monitoring result, and a monitoring system such as an underwater monitoring camera can be widely used. It is possible to easily and quickly confirm the soundness of the location and immediately perform inspection and repair.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a first embodiment of an apparatus for preventing adhesion of marine organisms according to the present invention.
FIG. 2 is a schematic diagram of an anode member conductor in the marine organism adhesion prevention apparatus shown in FIG. 1;
FIG. 3 is a schematic view showing a second embodiment of the sea creatures adhesion preventing apparatus according to the present invention.
FIG. 4 is a schematic view showing a third embodiment of the sea life adhesion preventing apparatus according to the present invention.
FIG. 5 is a schematic view showing a fourth embodiment of the sea life adhesion preventing apparatus according to the present invention.
FIG. 6 is a schematic diagram showing fifth and sixth embodiments of the apparatus for preventing adhesion of marine organisms according to the present invention.
FIG. 7 is a schematic diagram showing sixth and seventh embodiments of the sea life adhesion preventing apparatus according to the present invention.
FIG. 8 is a schematic view showing a seventh embodiment of the sea life adhesion preventing apparatus according to the present invention.
FIG. 9 is a schematic view showing an eighth embodiment of the sea life adhesion preventing apparatus according to the present invention.
FIG. 10 is a schematic view showing a ninth embodiment of the sea creature adhesion preventing device according to the present invention.
FIG. 11 is a schematic view showing a tenth embodiment of an apparatus for preventing adhesion of marine organisms according to the present invention.
[Explanation of symbols]
1 Sea life adhesion prevention device
2 Anode member conductor (anode member)
2a, 2b Anode member conductor element
3 Cathode side conductor (cathode member)
4 reference electrode
5 Anode forming member
6 Electrocatalyst
7 Support
8 External DC power supply
8a positive electrode
8b negative electrode
8c Verification pole
8d Automatic potential control unit
9 Current monitoring device
11 Judgment device
12 Insulation material
13 Roll curtain-shaped anode member conductor (anode member)
14 spindles
15 Shutter-like anode member conductor (anode member)
16 Grid-shaped anode member conductor (anode member)
17 Guide
18 Guide with slope
21 Negative pressure system
22 Suction device
23 Rubber seal
24 Recovery device
25 Cartridge type anode member conductor (or cathode side conductor)
26 Underwater surveillance camera
30 Seawater
35 Waterway or tank (insulator)

Claims

In the sea creature adhesion prevention device that generates oxygen in the sea water and suppresses the growth of sea life on structures that touch the sea water,
An anode forming member and an electrochemically active electrocatalyst coated on the anode forming member, and an anode member conductor installed so that the electrocatalyst faces the seawater side;
A cathode-side conductor installed in contact with seawater;
Built-in automatic potential control unit, with a positive electrode connected to the anode member conductor and a negative electrode connected to the cathode conductor, and an external DC power supply,
In this external DC power supply, the potential between the positive electrode and the negative electrode is set to a potential value that generates oxygen while suppressing the generation of chlorine in seawater,
At least one of the anode member conductor and the cathode-side conductor installed in the water channel or the water tank has a movable part that can be inserted into and removed from the water channel or the water tank from above .
An apparatus for preventing the adhesion of marine organisms, comprising a guide for guiding the movable part inserted / removed from / to the water channel or the water tank .

The cathode-side conductor is formed integrally with the anode member conductor via an insulating material, and the integrated structure has a movable portion that can be inserted into and removed from the water channel or water tank from above. The marine organism adhesion prevention apparatus described.

The marine organism adhesion prevention device according to claim 1, wherein the movable portion has a soft flexible shape such as a rubber sheet or a roll curtain.

The sea creature adhesion prevention device according to claim 1, wherein the movable portion has a lattice-shaped deformable structure.

The apparatus for preventing adhesion of marine organisms according to any one of claims 1 to 4, wherein the movable part includes a weight at a lower part, or the weight of the conductor of the movable part plays a role of a weight.

2. The apparatus for preventing adhesion of marine organisms according to claim 1 , wherein the guide is a guide with a slope having a slope for smoothly guiding the movable portion to a bottom surface of a water channel or a water tank.

The apparatus for preventing adhesion of marine organisms according to claim 1 or 2, further comprising a negative pressure system that applies a negative pressure to the wall surface side of the movable part in order to draw the movable part to the wall surface of the water channel or the water tank.

Adhesion preventing device for marine organisms according to claim 1, comprising a collecting device for collecting from the winding or drawer waterway or a water tank the movable portion.

The marine organism adhesion prevention device according to claim 8 , wherein the recovery device includes a cleaning system for cleaning the recovered movable part.

The apparatus for preventing adhesion of marine organisms according to claim 8 or 9 , wherein the movable part recovered by the recovery device has a structure that is detachable as a cartridge type.

The recovery device is detachable, according to claim 8 having a structure that is shared as a recovery device for recovering the movable portion of the marine organisms anti-adhesion devices installed in other locations Sea life adhesion prevention device.

The marine organism adhesion prevention apparatus according to any one of claims 1 to 11 , wherein the underwater monitoring camera is provided in a water channel or a water tank.

The marine organisms according to claim 1 or 2, further comprising: a current monitoring device that monitors a current flowing through the anode member conductor; and a determination device that determines a useful state of the anode member conductor based on a monitoring result from the current monitoring device. Adhesion prevention device.

The marine organism adhesion prevention device according to claim 13 , wherein the determination device determines the durability of the anode member conductor based on the integrated current value monitored by the current monitoring device.

In a method of operating a sea creature adhesion prevention device that generates oxygen in sea water and suppresses the formation of sea creatures on structures in contact with sea water,
At least one of the anode member conductor and the cathode-side conductor having a movable part that can be inserted into and removed from the upper part of the water channel or water tank is a movable conductor, and the movable conductor is used as a water channel. Insert it into the water tank or with a guide from the top,
By passing an electric current between the inserted movable conductor and a conductor having a different polarity, it flows into the seawater through the electrochemically active electrocatalyst of the anode member conductor. Oxygen is generated while suppressing the generation of chlorine to suppress the adhesion of marine organisms to structures,
Thereafter, the movable conductor is guided from a water channel or a water tank with a guide, taken out from the upper portion, and recovered, and the sea life adhesion prevention apparatus operating method is characterized.

The operation method of the sea life adhesion prevention apparatus according to claim 15 , wherein the collected movable conductor is washed with a jet or a brush.

The operation method of the sea creatures adhesion prevention apparatus according to claim 15 , wherein the collected movable conductor is removed or removed, and the removed movable part is replaced with a new movable part.

The marine organism adhesion prevention device according to claim 15 , wherein when the oxygen is generated, a current flowing through the anode member conductor is monitored, and a durability state of the anode member conductor is determined based on a monitoring result. Operation method.

In the method of operating the sea life adhesion prevention apparatus according to claim 11, a plurality of the sea life adhesion prevention apparatuses are provided in a water channel or a water tank, and the recovery apparatus of each sea life adhesion prevention apparatus is detached independently. A method for operating a marine organism adhesion prevention apparatus, comprising collecting a movable part of each marine organism adhesion prevention apparatus.

15. A method of operating a marine organism adhesion prevention device according to claim 1, wherein a plurality of the marine organism adhesion prevention devices are provided in parallel in a water channel or a water tank. Operation method of biological adhesion prevention device.