JP2733778B2 - Ultrasonic alga net - Google Patents
Ultrasonic alga netInfo
- Publication number
- JP2733778B2 JP2733778B2 JP1877689A JP1877689A JP2733778B2 JP 2733778 B2 JP2733778 B2 JP 2733778B2 JP 1877689 A JP1877689 A JP 1877689A JP 1877689 A JP1877689 A JP 1877689A JP 2733778 B2 JP2733778 B2 JP 2733778B2
- Authority
- JP
- Japan
- Prior art keywords
- net
- ultrasonic
- piezoelectric film
- alga
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 description 18
- 241000195493 Cryptophyta Species 0.000 description 6
- 241000237502 Ostreidae Species 0.000 description 5
- 235000020636 oyster Nutrition 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000001098 anti-algal effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical compound FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- -1 cyanovinylidene Chemical group 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
- Transducers For Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、圧電体フィルムを使用して牡蛎や藻等が付
着しないようにした超音波防藻網に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ultrasonic alga net which uses a piezoelectric film to prevent oysters, algae and the like from adhering.
［従来技術］ 従来、工場や火力発電所等の水の取り入れ口に水が自
由に流れ、ゴミや動物等が侵入しないように、金属ネッ
トやメッシュが設置されている。[Prior Art] Conventionally, a metal net or a mesh is installed so that water flows freely into a water intake of a factory, a thermal power plant, or the like so that garbage and animals do not enter.
［発明が解決しようとする課題］ しかしながら、この金属ネットやメッシュには牡蛎や
藻が付き安いので、金属ネットやメッシュがすぐにつま
ってしまい、水の取り入れ量が少なくなるという問題が
あった。[Problems to be Solved by the Invention] However, since the oysters and algae are cheaply attached to the metal nets and meshes, the metal nets and meshes are quickly clogged, and there is a problem that the amount of water taken in is reduced.
この問題を解決するために、金属ネットやメッシュに
薬物等を塗ることが行われていたが、この薬物が海に溶
け出して魚貝類に影響を与えるため、この薬物は禁止さ
れているのが現状である。To solve this problem, drugs and the like were applied to metal nets and meshes.However, this drug is banned because it dissolves into the sea and affects fish and shellfish. It is the current situation.
［課題を解決するための手段］ 上記問題点を解決するために、本発明の超音波防藻網
では、金属ネットの少なくとも目の間の金属をチューブ
状の圧電フィルムで覆い、上記金属を上記圧電フィルム
の内電極に接続し、外電極を他の導電線に接続するとと
もに、前記圧電フィルムの少なくとも周囲を被覆するも
のである。[Means for Solving the Problems] In order to solve the above problems, in the ultrasonic algae net of the present invention, at least the metal between the eyes of the metal net is covered with a tubular piezoelectric film, and It connects to the inner electrode of the piezoelectric film, connects the outer electrode to another conductive wire, and covers at least the periphery of the piezoelectric film.
また、複数の圧電フィルムを設けた網を一部に設けて
もよい。Further, a net provided with a plurality of piezoelectric films may be partially provided.
さらに、網の導電線を通して前記圧電フィルムに交流
電圧を印加してもよい。Further, an AC voltage may be applied to the piezoelectric film through a conductive wire of a net.
また、網に温度センサ、PHセンサあるいは溶存酸素セ
ンサを装着してもよい。Further, a temperature sensor, a PH sensor or a dissolved oxygen sensor may be attached to the net.
［作用］ 本発明によれば、網に圧電フィルムを組み込んで、圧
電フィルムに交流電圧を印加し、常に超音波が発生する
ようして、牡蛎や藻が魚網に付着するのを防ぐものであ
る。[Operation] According to the present invention, a piezoelectric film is incorporated in a net, an AC voltage is applied to the piezoelectric film, an ultrasonic wave is always generated, and oysters and algae are prevented from adhering to a fish net. .
［実施例］ 第１図を参照すると、本発明の実施例の超音波防藻網
では、金属メッシュ１の交点の間に高分子の圧電フィル
ム２を装着する。この圧電フィルム２は第２図に示すよ
うに円筒状に形成され、この円筒の圧電フィルム２の内
外に、第２図（ｂ）に示すようにそれぞれ内電極３及び
外電極４が形成され、内電極３は金属メッシュに接続さ
れ、外電極４は図示しない導電部材に接続され、そし
て、第２図（ａ）に示すように圧電フィルム２の周囲に
フッ素系ゴム、シリコンゴムあるいはネオプレン等の絶
縁体５で被覆する。[Embodiment] Referring to FIG. 1, in an ultrasonic alga net of an embodiment of the present invention, a polymer piezoelectric film 2 is mounted between intersections of a metal mesh 1. The piezoelectric film 2 is formed in a cylindrical shape as shown in FIG. 2, and an inner electrode 3 and an outer electrode 4 are formed inside and outside the cylindrical piezoelectric film 2 as shown in FIG. The inner electrode 3 is connected to a metal mesh, the outer electrode 4 is connected to a conductive member (not shown), and a fluorine rubber, silicon rubber, neoprene, or the like is provided around the piezoelectric film 2 as shown in FIG. Cover with insulator 5.
なお、圧電フィルム２の内電極３が金属メッシュ１に
接続された場合は、圧電フィルム２で被覆されない金属
メッシュ１の部分も絶縁体５で被覆する。また、圧電フ
ィルム２を金属メッシュ１の全体に被覆し、外電極４を
順次接続し、その上に絶縁体５で被覆してもよい。When the inner electrode 3 of the piezoelectric film 2 is connected to the metal mesh 1, the portion of the metal mesh 1 not covered by the piezoelectric film 2 is also covered by the insulator 5. Alternatively, the piezoelectric film 2 may be coated on the entire metal mesh 1, the external electrodes 4 may be sequentially connected, and the outer electrode 4 may be covered with an insulator 5.
この圧電フィルム２としては、ポリフッ化ビニリデン
（PVDF）、フッ化ビニリデンと三フッ化エチレンの共重
合体｛Ｐ（VDF−TrFE）｝、フッ化ビニリデンと四フッ
化エチレンの共重合体｛Ｐ（VDF−TeFE）｝、あるいは
シアノビニリデンとビニルアセテートとの共重合体｛Ｐ
（VDCN−VA）｝など、ポーリングにより圧電性が付与さ
れる高分子が用いられる。特に、Ｐ（VDF−TrFE）とＰ
（VDF−TeFE）、Ｐ（VDCN−VA）はその溶液を薄膜電極
の上に直接塗布することにより薄膜化し、これをポーリ
ングして圧電フィルム２を作成し得るので、特に好まし
い。Examples of the piezoelectric film 2 include polyvinylidene fluoride (PVDF), a copolymer of vinylidene fluoride and ethylene trifluoride {P (VDF-TrFE)}, and a copolymer of vinylidene fluoride and tetrafluoroethylene {P ( VDF-TeFE) or a copolymer of cyanovinylidene and vinyl acetate {P
(VDCN-VA) A polymer to which piezoelectricity is imparted by poling, such as｝, is used. In particular, P (VDF-TrFE) and P
(VDF-TeFE) and P (VDCN-VA) are particularly preferable because they can be thinned by directly applying the solution on a thin film electrode, and poling the thin film to form the piezoelectric film 2.
このように構成した本実施例の超音波防藻網６を、工
場や火力発電所の水の取入れ口に設ければ、牡蛎や藻等
が付着することがないので、超音波防藻網６に付着した
ゴミ等だけを取れば、半永久的に使用することができ
る。If the ultrasonic anti-algal network 6 of the present embodiment configured as described above is provided at the water intake of a factory or a thermal power plant, oysters, algae, etc. do not adhere, and the ultrasonic anti-algal net 6 If only the dust and the like adhering to is removed, it can be used semi-permanently.
なお、超音波防藻網６の１箇所または複数箇所に温度
センサやPHセンサまたは溶存酸素量センサを設けてもよ
い。Note that a temperature sensor, a PH sensor, or a dissolved oxygen sensor may be provided at one or a plurality of locations of the ultrasonic algal net 6.
［発明の効果］ 本発明は、以上のように構成されているので、工場や
火力発電所等の取水口に超音波防藻網を設置することに
より、牡蛎や藻の付着を防ぐことができるという利点が
ある。[Effects of the Invention] Since the present invention is configured as described above, it is possible to prevent the attachment of oysters and algae by installing an ultrasonic alga protection network at an intake of a factory or a thermal power plant. There is an advantage.
第１図は本発明の１実施例の超音波防藻網の平面図、第
２図（ａ）、（ｂ）は第１図の超音波防藻網の一部の拡
大図及び断面図である。 １……金属メッシュ、２……圧電フィルム、３……内電
極、４……外電極、５……絶縁体、６……超音波防藻
網。FIG. 1 is a plan view of an ultrasonic alga net of one embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are an enlarged view and a sectional view of a part of the ultrasonic alga net of FIG. is there. 1 ... metal mesh, 2 ... piezoelectric film, 3 ... inner electrode, 4 ... outer electrode, 5 ... insulator, 6 ... ultrasonic alga net.
Claims (5)
ューブ状の圧電フィルムで覆い、上記金属を上記圧電フ
ィルムの内電極に接続し、外電極を他の導電線に接続す
るとともに、前記圧電フィルムの少なくとも周囲を被覆
したことを特徴とする超音波防藻網。1. A metal net covering at least the metal between the eyes with a tubular piezoelectric film, connecting the metal to an inner electrode of the piezoelectric film, connecting an outer electrode to another conductive wire, An ultrasonic algal net, wherein at least the periphery of the film is covered.
に交流電圧を印加することを特徴とする特許請求の範囲
第１項記載の超音波防藻網。2. The ultrasonic alga net according to claim 1, wherein an AC voltage is applied to said piezoelectric film through said conductive wire of said rope.
とする請求項１記載の超音波防藻網。3. The ultrasonic algal net according to claim 1, wherein a temperature sensor is mounted on said net.
する請求項１記載の超音波防藻網。4. The ultrasonic alga protection net according to claim 1, wherein a PH sensor is mounted on said net.
特徴とする請求項１記載の超音波防藻網。5. The ultrasonic alga protection net according to claim 1, wherein a dissolved oxygen sensor is mounted on said net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1877689A JP2733778B2 (en) | 1989-01-27 | 1989-01-27 | Ultrasonic alga net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1877689A JP2733778B2 (en) | 1989-01-27 | 1989-01-27 | Ultrasonic alga net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02200908A JPH02200908A (en) | 1990-08-09 |
| JP2733778B2 true JP2733778B2 (en) | 1998-03-30 |
Family
ID=11981036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1877689A Expired - Fee Related JP2733778B2 (en) | 1989-01-27 | 1989-01-27 | Ultrasonic alga net |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2733778B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704436A (en) * | 2012-06-07 | 2012-10-03 | 中国水产科学研究院黄海水产研究所 | A suspended on-site enclosure experiment system and its installation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116918617B (en) * | 2023-07-26 | 2025-09-30 | 江苏大学 | A method for controlling the invasion of Spartina alterniflora |
-
1989
- 1989-01-27 JP JP1877689A patent/JP2733778B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704436A (en) * | 2012-06-07 | 2012-10-03 | 中国水产科学研究院黄海水产研究所 | A suspended on-site enclosure experiment system and its installation method |
| CN102704436B (en) * | 2012-06-07 | 2014-08-27 | 中国水产科学研究院黄海水产研究所 | A suspended on-site enclosure experiment system and its installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02200908A (en) | 1990-08-09 |
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