JP4469455B2

JP4469455B2 - Powder storage tank for mobile powder fire extinguishing equipment

Info

Publication number: JP4469455B2
Application number: JP2000075522A
Authority: JP
Inventors: 大造久保; 四朗平井
Original assignee: Yamato Protec Corp
Current assignee: Yamato Protec Corp
Priority date: 2000-03-17
Filing date: 2000-03-17
Publication date: 2010-05-26
Anticipated expiration: 2020-03-17
Also published as: JP2001259066A

Description

【０００１】
【発明の属する技術分野】
本発明は、移動式粉末消火設備に用いられる粉末貯蔵タンクに係り、より詳しくは粉末消火剤の真空充填を可能にならしめた粉末貯蔵タンクに関する。
【０００２】
【従来の技術】
従来の移動式粉末消火設備に用いられる粉末貯蔵タンクは、例えば、図５にその概略図を示すように、加圧用ガス容器１７を併有し、この加圧用ガス容器１７に接続された加圧ガス導入管４０をタンク本体１内に導入して該加圧ガス導入管４０の先端４０ａをタンク本体１の内底の近傍に位置させ、一方、タンク本体１内に消火剤放出管４１をこれの一端４１ａがタンク本体１の内底の近傍に位置し、他端４１ｂがタンク本体１の外部に出るように備え付けている。タンク本体１の外部に出された消火剤放出管４１の他端４１ｂには所定長さの消火剤放出ホース２２を放出弁４２を介して接続し、このホース２２の先端にノズル弁２５を介してノズル２６を付けている。タンク本体１の上部には安全弁２及び排気弁３を取り付けている。この粉末貯蔵タンクは、防護対象物から所定距離内に設置される格納箱２８に加圧用ガス容器１７及び消火剤放出ホース２２ごと格納される。
【０００３】
【発明が解決しようとする課題】
しかるに、上記内部構造の粉末貯蔵タンクでは、粉末消火剤Ｂを充填するにあたって真空充填方式を採用すると弊害が生じる。真空充填方式によれば、粉末貯蔵タンクを真空に排気した後、粉末消火剤Ｂを充填することにより充填時間を著しく短縮できるのである。しかしながら、真空充填時に、タンク本体１の内部に上記のような加圧ガス導入管４０及び消火剤放出管４１が既設されていると、粉末消火剤Ｂが加圧ガス導入管４０内に先端４０ａから、また消火剤放出管４１内に一端４１ａからそれぞれ深く吸い込まれ、このまま長期間放置されたときに消火剤放出管４１内及び加圧ガス導入管４０内に吸い込まれた粉末消火剤が固まり詰まってしまうという弊害が生じる。このため上記内部構造の粉末貯蔵タンクでは粉末消火剤の真空充填方式を採用することができなかった。
【０００４】
本発明の目的は、このような問題を解決するためになされたもので、移動式粉末消火設備用の粉末貯蔵タンクに、粉末消火剤を加圧ガス導入管及び消火剤放出管に吸い込んで詰まらせるような弊害なくして真空充填を可能にすることにある。
【０００５】
【課題を解決するための手段】
本発明の請求項１に係る移動式粉末消火設備用の粉末貯蔵タンクは、タンク本体の底部に消火剤充填口を設け、この消火剤充填口を、加圧ガス導入口部と消火剤放出口部を備えた底蓋で塞いでおり、上記底蓋が、上記加圧ガス導入口部及び消火剤放出口部を有する蓋本体と、この蓋本体の底側外周から張出しており格納箱の内底板に固定される座板とを備えていることに特徴を有するものである。
【０００６】
上記構成の粉末貯蔵タンクによれば、消火剤充填口を底蓋で塞ぐに先立って、タンク本体を上下反転させたうえでタンク本体を真空に排気した後、粉末消火剤を充填し、しかる後消火剤充填口を底蓋で塞いでタンク本体を元の姿勢に戻す。このように真空充填時には加圧ガス導入口部と消火剤放出口部を備えた底蓋がタンク本体から取り外されているので、前述した従来の粉末貯蔵タンクに真空充填した場合に生じるような粉末消火剤の吸込みによる詰まり現象を起こすことはなく、粉末消火剤を何ら弊害なく、速やかに真空充填することができる。
【０００７】
上記底蓋によれば、真空充填後、粉末貯蔵タンクを元の姿勢に戻して格納箱に格納するとき、座板を格納箱の内底板上に載置して固定することで粉末貯蔵タンクを格納箱に簡単かつ安定よく格納することができる。
【０００８】
上記消火剤放出口部のタンク本体内に臨む内側開口端は、請求項２記載の発明のように、加圧ガスによりタンク本体内が加圧されたときに該タンク本体内圧で破裂する封板で封口している。これによれば、真空充填後、粉末貯蔵タンクを元の姿勢に戻しても、実使用時までに粉末消火剤が消火剤放出口部に浸入して詰まるおそれが全く無くなる。また、消火剤放出口部の内側開口端にそのような封板を設けておくと、消火剤放出口部に接続される消火剤放出管の途中に、実使用時に粉末貯蔵タンクが所定圧に加圧されたときに開くための放出弁を敢えて設ける必要が無くなる。
【０００９】
上記加圧ガス導入口部のタンク本体内に臨む内側開口端は、請求項３記載の発明のように、該加圧ガス導入口部内に導入される加圧ガス圧により破裂する封板で封口するか、または請求項４記載の発明のように加圧ガス導入口部の内側開口端に、最先端部が閉塞されて周壁に一個もしくは二個以上のガス放出孔を有するガス放出管を固定するとともに、該ガス放出管のガス放出孔を有する周壁の外周にピール管を前記ガス放出孔を覆うよう嵌着する。これによれば、真空充填後、粉末貯蔵タンクを元の姿勢に戻しても、実使用時までに粉末消火剤が加圧ガス導入口部に浸入して詰まるおそれが全く無くなる。
【００１０】
【発明の実施の形態】
（第１実施例）
本発明の第１実施例を図１及び図２に基づき説明する。図１は移動式粉末消火設備用の粉末貯蔵タンクの概略縦断正面図、図２は粉末貯蔵タンクの底部構造を示す断面図である。
【００１１】
図１及び図２において、１はタンク本体で、その上部に安全弁２及び排気弁３を取り付け、底部に消火剤充填口４を設け、この消火剤充填口４を底蓋５で塞いでいる。
底蓋５は、有底筒状の蓋本体６と、この蓋本体６の底側に張出し状に付けた座板７とを備える。蓋本体６の上端開口部の内周には消火剤充填口４の外周に設けた雄ねじ８に螺合する雌ねじ９を設けており、蓋本体６の円周壁の一部に加圧ガス導入口部１０を、それとは別の箇所に消火剤放出口部１１をそれぞれ設けている。
【００１２】
加圧ガス導入口部１０のタンク本体１内に臨む内側開口端１０ａには、Ｌ形状に形成されて最先端部１３ａが閉塞され先端部の周壁に一個もしくは二個以上のガス放出孔１４を有するガス放出管１３が該先端部をタンク本体１の内底に臨むよう固定される。そのガス放出管１３のガス放出孔１４を有する先端部にはゴム製のピール管１５がガス放出孔１４の外側を覆うように外嵌され、このピール管１５の中央付近が止め輪１６でかしめられている。ピール管１５は、ガス放出孔１４からタンク本体１内への一方向にだけ流すという逆止め弁の作用を発揮し、また粉末消火剤Ｂがガス放出孔１４に浸入するのを防止する。
【００１３】
一方、消火剤放出口部１１のタンク本体１内に臨む内側開口端１１ａには粉末消火剤Ｂが浸入するのを防ぐために封板２０で封口される。封板２０は薄い樹脂フィルム等からなって、消火剤放出口部１１の内側開口端１１ａにねじ結合されるリング状の雌ねじ体よりなる封板取付具２１で内側開口端１１ａに保持リング２０ａを介して押さえ付けて固定される。封板２０は加圧ガスによりタンク本体１内が所定圧に加圧されたときに該タンク内圧で初めて破裂する強度のものを使用すると、後述する消火剤放出ホース２２の途中に、実使用時にタンク本体１が所定圧に加圧されたときに開くための図５に示すごとき放出弁４２を敢えて設ける必要が無くなる。
【００１４】
この底蓋５は、後述するごとく粉末消火剤Ｂの真空充填後に、消火剤充填口４にパッキン１２又はＯ−リングを介してねじ込むことによりタンク本体１に対し気密性を保つ状態に装着される。
【００１５】
底蓋５の上記加圧ガス導入口部１０のタンク本体１外部に臨む外側開口端１０ｂには加圧ガス容器１７に接続された加圧ガス導入管１８が加圧ガス導入口部１０の外側開口端１０ｂにねじ込み結合可能な継手１９を介して接続されるようになっている。また、消火剤放出口部１１のタンク本体１外部に臨む外側開口端１１ｂには、所定長さの消火剤放出ホース２２を直接に、または消火剤放出管２３を外側開口端１１ｂにねじ込み結合可能な継手２４を介して接続される。消火剤放出ホース２２の先端にはノズル弁２５を介してノズル２６を付けている。
これら加圧ガス導入管１８及び消火剤放出ホース２２の接続は、後述するごとく底蓋５を粉末消火剤口４にねじ込み装着した後に行われる。
【００１６】
上記ガス放出管１３にはピール管１５を装着するに代えて、図３に示すようにガス放出管１３の最先端の開口部１３ｂに、ガス放出管１３に導入される加圧ガス圧で破裂する封板２７を、消火剤放出口部１１に対する封板２０の取付け要領と同じくリング状の封板取付具２１で保持リング２７ａを介して取り付けておいても粉末消火剤Ｂがガス放出管１３の開口部１３ｂから浸入するのを防止することができる。
【００１７】
上記構成の粉末貯蔵タンクによれば粉末消火剤Ｂの充填には真空充填方式を採用することができる。真空充填に際しては、タンク本体１を底部の消火剤充填口４が上向きになるよう上下反転させたうえで、タンク本体１を真空に排気し、底蓋５を外した状態下で消火剤充填口４から粉末消火剤Ｂを充填する。このように加圧ガス導入口部１０及び消火剤放出口部１１を有する底蓋５を取り外した状態で粉末消火剤Ｂを真空充填すると、粉末消火剤Ｂが加圧ガス導入口部１０及び消火剤放出口部１１に吸い込んで詰まらせるという弊害は一切なく、短時間で能率よく真空充填することができる。充填後は、消火剤充填口４を底蓋５で塞ぐ。また加圧ガス導入口部１０に加圧ガス導入管１８を、消火剤放出口部１１に消火剤放出ホース２２をそれぞれ接続する。そして、タンク本体１を元の姿勢に戻して格納箱２８に格納するが、その際、底蓋５の座板７を格納箱２８の内底板２８ａ上に載置してボルト等で締結固定する。これにより粉末貯蔵タンクを格納箱２８に簡単かつ安定よく格納することができる。
【００１８】
タンク本体１を底蓋５が下側になる元の姿勢に戻しても実使用するまでには、消火剤放出口部１１の内側開口端１１ａは封板２０で封口された状態が保持されるので、粉末消火剤Ｂが消火剤放出口部１１に浸入して詰まるおそれがない。また、ガス放出管１３の先端部のガス放出孔１４がピール管１５で塞がれるか、またはガス放出管１３の最先端部の開口部１３ｂが封板２７で封口された状態が保持されるので、粉末消火剤Ｂがガス放出管１３、加圧ガス導入口部１０に浸入して詰まるおそれも全くない。
【００１９】
実際に消火時に使用するには、加圧用ガス容器１７から加圧ガスを加圧ガス導入管１８、ガス放出管１３を介してタンク本体１内に導入することにより、該タンク本体１内を加圧するとともに、粉末消火剤Ｂを撹拌する。タンク本体１の内圧が一定の圧力になれば封板２０が破れ、粉末消火剤Ｂが消火剤放出ホース２２を経てノズル２６から放出される。
【００２０】
（第２実施例）
図４は本発明の第２実施例を示しており、この実施例では粉末貯蔵タンクの底部構造が第１実施例のそれとは異なり、その他の構成については同様である。
この実施例では、タンク本体１の底部に筒状の口金３０を付けて該口金３０の内部に消火剤充填口４を形成しており、その消火剤充填口４に底蓋５をリップ３１ａを有する締付ナット３１で締付け固定して消火剤充填口４を塞ぐようにしている。底蓋５は鍔５ａ付きの円柱状に形成し、その周面５ｂの一部から上端面５ｃにわたって加圧ガス導入口部１０を、また周面５ｂの他の箇所から上端面５ｃにわたって消火剤放出口部１１をそれぞれ形成している。底蓋５の底面には座板７が底蓋５の底面外周に張出すようにボルト３２で締結固定されている。
【００２１】
そして、底蓋５の加圧ガス導入口部１０のタンク本体１内に臨む内側開口端１０ａには、第１実施例の場合と同様なガス放出孔１４を有するガス放出管１３及びピール管１５が備えつけられる。また底蓋５の消火剤放出口部１１のタンク本体１内に臨む内側開口端１１ａは、第１実施例の場合と同様な薄い樹脂フィルム等よりなり封板２０で封口される。この場合、封板２０は消火剤放出口部１１の内側開口端１１ａにねじ結合される中空状の雄ねじ体よりなる封板取付具２１で保持リング２０ａを介して押さえ付け固定される。
【００２２】
この底蓋５で消火剤充填口４を塞ぐには、底蓋５の鍔５ａより上端部が消火剤充填口４に内嵌されるとともに、鍔５ａと口金３０の端面３０ａとの間にパッキン１２が介在され、底蓋５の鍔５ａより下端部にリップ３１ａを有する締付ナット３１が外嵌され、この締付ナット３１が消火剤充填口４の外周の雄ねじ３３に締め付けられる。この締付けによりリップ３１ａで底蓋５の鍔５ａが口金３０の端面３０ａにパッキン１２を介して押し付けられることによりタンク本体１に対し底蓋５を気密性を保つ状態に装着することができる。
【００２３】
加圧ガス導入口部１０のタンク本体１外部に臨む外側開口端１０ｂには、第１実施例の場合と同様に、加圧ガス容器１７に接続された加圧ガス導入管１８が加圧ガス導入口部１０の外側開口端１０ｂにねじ込み結合可能な継手１９を介して接続されるようになっている。また、消火剤放出口部１１のタンク本体１外部に臨む外側開口端１１ｂには、第１実施例の場合と同様に、所定長さの消火剤放出ホース２２を直接に、又は放出管２３を介して前記外側開口端１１ｂにねじ込み結合可能な継手３４を介して接続される。消火剤放出ホース２２の先端にはノズル弁２５を介してノズル２６を付けている。この場合、消火剤放出口部１１は、第１実施例の場合と同様な封板２０で封口されていると、消火剤放出ホース２２の途中に、実使用時に粉末貯蔵タンクが所定圧に加圧されたときに開くための放出弁（図５の放出弁４２）を敢えて設ける必要がない。
【００２４】
これら加圧ガス導入管１８及び消火剤放出ホース２２又は放出管２３の接続は、粉末消火剤Ｂの真空充填を終了し底蓋５を消火剤充填口４に装着した後に行われる。
【００２５】
この実施例の場合においても上記ガス放出管１３にはピール管１５を装着するに代えて、図３に示すようにガス放出管１３の最先端の開口部１３ｂに、ガス放出管１３に導入される加圧ガス圧で破裂する封板２７を、消火剤放出口部１１に対する封板２０の取付け要領と同じくリング状の封板取付具２１で保持リング２７ａを介して取り付けるものであってもよい。
【００２６】
【００２７】
【発明の効果】
本発明によれば、粉末消火剤を加圧ガス導入管及び消火剤放出管に吸込み詰まらせるような弊害なく真空充填できて、粉末消火剤の迅速な充填の実現化を図れるという利点がある。
【図面の簡単な説明】
【図１】第１実施例の粉末貯蔵タンクの概略縦断正面図である。
【図２】第１実施例の粉末貯蔵タンクの底部構造を示す断面図である。
【図３】第１実施例の粉末貯蔵タンクのガス放出管の先端部の変形例を示す断面図である。
【図４】第２実施例の粉末貯蔵タンクの底部構造を示す断面図である。
【図５】従来例の粉末貯蔵タンクの概略縦断正面図である。
【符号の説明】
１タンク本体
４消火剤充填口
５底蓋
６蓋本体
７座板
１０加圧ガス導入口部
１１消火剤放出口部
１３ガス放出管
１４ガス放出孔
１５ピール管
２０，２７封板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a powder storage tank used in a mobile powder fire extinguishing equipment, and more particularly to a powder storage tank that enables vacuum filling of a powder fire extinguisher.
[0002]
[Prior art]
The powder storage tank used in the conventional mobile powder fire extinguishing systems, for example, as shown the schematic diagram in FIG. 5, the pressurizing gas container 17 and having both, connected pressure to the pressurizing gas chamber 17 A gas introduction pipe 40 is introduced into the tank body 1 so that the tip 40a of the pressurized gas introduction pipe 40 is positioned near the inner bottom of the tank body 1. On the other hand, a fire extinguishing agent discharge pipe 41 is provided in the tank body 1. One end 41 a is positioned near the inner bottom of the tank main body 1, and the other end 41 b is provided so as to come out of the tank main body 1. A fire extinguishing agent discharge hose 22 having a predetermined length is connected to the other end 41b of the fire extinguishing agent discharge pipe 41 which is provided outside the tank main body 1 via a discharge valve 42. The nozzle 26 is attached. A safety valve 2 and an exhaust valve 3 are attached to the upper part of the tank body 1. This powder storage tank is stored together with the pressurizing gas container 17 and the extinguishing agent discharge hose 22 in a storage box 28 installed within a predetermined distance from the object to be protected.
[0003]
[Problems to be solved by the invention]
However, in the powder storage tank having the above-described internal structure, if a vacuum filling method is employed when filling the powder fire extinguisher B, a harmful effect occurs. According to the vacuum filling method, the filling time can be significantly shortened by filling the powder fire extinguishing agent B after the powder storage tank is evacuated to vacuum. However, when the pressurized gas introduction pipe 40 and the extinguishing agent discharge pipe 41 as described above are already installed in the tank body 1 during vacuum filling, the powder extinguishing agent B is placed in the pressurized gas introduction pipe 40 at the tip 40a. In addition, the fire extinguisher discharge pipe 41 is deeply sucked from one end 41a, and the powder fire extinguisher sucked into the fire extinguisher discharge pipe 41 and the pressurized gas introduction pipe 40 is solidified and clogged. The evil that it will end up occurs. For this reason, the powder storage tank having the above internal structure cannot adopt the vacuum filling method of the powder fire extinguisher.
[0004]
An object of the present invention is to solve such a problem, and a powder storage tank for a mobile powder fire extinguishing equipment sucks a powder fire extinguisher into a pressurized gas introduction pipe and a fire extinguishing agent discharge pipe and is clogged. It is to enable vacuum filling without causing such harmful effects.
[0005]
[Means for Solving the Problems]
A powder storage tank for mobile powder fire extinguishing equipment according to claim 1 of the present invention is provided with a fire extinguishing agent filling port at the bottom of the tank body, and the fire extinguishing agent filling port is connected to a pressurized gas introduction port and a fire extinguishing agent discharge port. The bottom lid is covered with a lid main body having the pressurized gas introduction port portion and the extinguishing agent discharge port portion, and projects from the outer periphery on the bottom side of the lid main body. It is characterized by having a seat plate fixed to the bottom plate .
[0006]
According to the powder storage tank of the above configuration, before closing the extinguishing agent filling port with the bottom cover, after inverting the tank body upside down and evacuating the tank body to vacuum, filling with powder extinguishing agent, and then Close the extinguishing agent filling port with the bottom lid and return the tank body to its original position. As described above, since the bottom lid provided with the pressurized gas introduction port and the extinguishing agent discharge port is removed from the tank body during vacuum filling, the powder generated when the conventional powder storage tank described above is vacuum filled. There is no clogging phenomenon due to the inhalation of the extinguishing agent, and the powder extinguishing agent can be quickly vacuum-filled without any harmful effects.
[0007]
According to the bottom cover, after the vacuum filling, when the powder storage tank is returned to its original position and stored in the storage box, the seat storage plate is placed on the inner bottom plate of the storage box and fixed. It can be stored easily and stably in the storage box.
[0008]
The inner opening end facing the inside of the tank body of the extinguishing agent discharge port is a sealing plate that bursts at the tank body internal pressure when the inside of the tank body is pressurized by pressurized gas as in the invention of claim 2. It is sealed with. According to this, even if the powder storage tank is returned to the original posture after vacuum filling, there is no possibility that the powder fire extinguisher enters the fire extinguishing agent discharge port and is clogged by the time of actual use. Also, if such a sealing plate is provided at the inner opening end of the extinguishing agent discharge port, the powder storage tank is brought to a predetermined pressure during actual use in the middle of the extinguishing agent discharge pipe connected to the extinguishing agent discharge port. There is no need to provide a release valve for opening when pressurized.
[0009]
The inner opening end facing the tank body of the pressurized gas inlet is sealed with a sealing plate that bursts by the pressurized gas pressure introduced into the pressurized gas inlet, as in the third aspect of the invention. Or a gas discharge pipe having one or more gas discharge holes fixed to the peripheral wall at the inner opening end of the pressurized gas introduction port as in the invention of claim 4 At the same time, a peel tube is fitted on the outer periphery of the peripheral wall having the gas discharge hole of the gas discharge tube so as to cover the gas discharge hole. According to this, even if the powder storage tank is returned to the original posture after vacuum filling, there is no possibility that the powder fire extinguisher enters the pressurized gas inlet port and is clogged by the time of actual use.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic longitudinal front view of a powder storage tank for a mobile powder fire extinguishing equipment, and FIG. 2 is a cross-sectional view showing the bottom structure of the powder storage tank.
[0011]
In FIGS. 1 and 2, reference numeral 1 denotes a tank body, to which a safety valve 2 and an exhaust valve 3 are attached at the top, a fire extinguishing agent filling port 4 is provided at the bottom, and the extinguishing agent filling port 4 is closed by a bottom lid 5.
The bottom lid 5 includes a bottomed cylindrical lid body 6 and a seat plate 7 attached to the bottom side of the lid body 6 in a protruding manner. A female screw 9 is provided on the inner periphery of the upper end opening of the lid body 6 to be screwed with a male screw 8 provided on the outer periphery of the extinguishing agent filling port 4, and a pressurized gas inlet is formed in a part of the circumferential wall of the lid body 6. The part 10 is provided with a fire extinguishing agent discharge port 11 at a different location.
[0012]
The inner opening end 10a of the pressurized gas introduction port 10 facing the tank body 1 is formed in an L shape, the leading end 13a is closed, and one or more gas discharge holes 14 are formed in the peripheral wall of the tip. A gas discharge pipe 13 having the tip is fixed so as to face the inner bottom of the tank body 1. A rubber peel tube 15 is externally fitted on the tip of the gas discharge tube 13 having the gas discharge hole 14 so as to cover the outside of the gas discharge hole 14, and the center of the peel tube 15 is caulked by a retaining ring 16. It has been. The peel pipe 15 exhibits a check valve function of flowing in only one direction from the gas discharge hole 14 into the tank body 1 and prevents the powder fire extinguishing agent B from entering the gas discharge hole 14.
[0013]
On the other hand, the inside opening end 11a of the fire extinguishing agent discharge port 11 facing the tank body 1 is sealed with a sealing plate 20 to prevent the powder fire extinguishing agent B from entering. The sealing plate 20 is made of a thin resin film or the like, and a holding ring 20a is attached to the inner opening end 11a by a sealing plate fixture 21 made of a ring-shaped female screw body screwed to the inner opening end 11a of the fire extinguishing agent discharge port portion 11. It is pressed and fixed through. If the sealing plate 20 is of a strength that can be ruptured for the first time when the inside of the tank main body 1 is pressurized to a predetermined pressure by the pressurized gas, it will be placed in the middle of the fire extinguishing agent discharge hose 22 to be described later during actual use. There is no need to provide the discharge valve 42 as shown in FIG. 5 for opening when the tank body 1 is pressurized to a predetermined pressure.
[0014]
As will be described later, the bottom lid 5 is mounted in a state in which the tank body 1 is kept airtight by being screwed into the extinguishing agent filling port 4 via a packing 12 or an O-ring after vacuum filling with the powder extinguisher B as will be described later. .
[0015]
A pressurized gas introduction pipe 18 connected to a pressurized gas container 17 is arranged outside the pressurized gas inlet 10 at an outer opening end 10 b of the bottom lid 5 facing the outside of the tank body 1 of the pressurized gas inlet 10. It is connected to the open end 10b via a joint 19 that can be screwed and coupled. Further, a fire extinguishing agent discharge hose 22 having a predetermined length can be directly connected to the outer opening end 11b of the fire extinguishing agent discharge port 11 facing the outside of the tank body 1 or a fire extinguishing agent discharge pipe 23 can be screwed into the outer opening end 11b. The connection is made through a simple joint 24. A nozzle 26 is attached to the tip of the fire extinguishing agent discharge hose 22 via a nozzle valve 25.
The pressurized gas introduction pipe 18 and the extinguishing agent discharge hose 22 are connected after the bottom cover 5 is screwed into the powder extinguishing agent port 4 as will be described later.
[0016]
Instead of attaching the peel pipe 15 to the gas discharge pipe 13, as shown in FIG. 3, the gas discharge pipe 13 is ruptured by the pressurized gas pressure introduced into the gas discharge pipe 13 at the most advanced opening 13 b. Even if the sealing plate 27 to be attached is attached via the holding ring 27a with the ring-shaped sealing plate attachment 21 in the same manner as the attachment of the sealing plate 20 to the extinguishing agent discharge port 11, the powder fire extinguishing agent B is still in the gas release pipe 13. It is possible to prevent intrusion from the opening 13b.
[0017]
According to the powder storage tank having the above configuration, a vacuum filling method can be adopted for filling the powder fire extinguisher B. When filling with vacuum, the tank body 1 is turned upside down so that the bottom extinguishing agent filling port 4 faces upward, the tank body 1 is evacuated to vacuum, and the bottom lid 5 is removed and the extinguishing agent filling port is removed. Fill powder extinguishing agent B from 4. When the powder fire extinguisher B is vacuum-filled with the bottom cover 5 having the pressurized gas inlet 10 and the fire extinguishing agent outlet 11 removed in this manner, the powder fire extinguisher B becomes the pressurized gas inlet 10 and the fire extinguisher. There is no harmful effect of sucking and clogging the agent discharge port 11, and vacuum filling can be performed efficiently in a short time. After filling, the extinguishing agent filling port 4 is closed with the bottom lid 5. Further, the pressurized gas introduction pipe 18 is connected to the pressurized gas introduction port portion 10, and the fire extinguishing agent discharge hose 22 is connected to the fire extinguishing agent discharge port portion 11. Then, the tank body 1 is returned to its original posture and stored in the storage box 28. At that time, the seat plate 7 of the bottom cover 5 is placed on the inner bottom plate 28a of the storage box 28 and fastened with bolts or the like. . As a result, the powder storage tank can be easily and stably stored in the storage box 28.
[0018]
Even when the tank body 1 is returned to the original position with the bottom cover 5 on the lower side, the inner opening end 11a of the fire extinguishing agent discharge port 11 is kept sealed by the sealing plate 20 until it is actually used. Therefore, there is no possibility that the powder fire extinguisher B enters the fire extinguishing agent discharge port 11 and becomes clogged. Further, the state in which the gas discharge hole 14 at the tip of the gas discharge pipe 13 is blocked by the peel pipe 15 or the opening 13b at the most distal end of the gas discharge pipe 13 is sealed by the sealing plate 27 is maintained. Therefore, there is no possibility that the powder fire extinguisher B enters the gas discharge pipe 13 and the pressurized gas inlet 10 and becomes clogged.
[0019]
In actual use in fire extinguishing, a pressurized gas is introduced from the pressurized gas container 17 into the tank body 1 through the pressurized gas introduction pipe 18 and the gas discharge pipe 13, thereby adding pressure to the tank body 1. The powder fire extinguisher B is stirred while pressing. When the internal pressure of the tank body 1 becomes a constant pressure, the sealing plate 20 is broken, and the powder fire extinguisher B is discharged from the nozzle 26 through the fire extinguisher discharge hose 22.
[0020]
(Second embodiment)
FIG. 4 shows a second embodiment of the present invention. In this embodiment, the bottom structure of the powder storage tank is different from that of the first embodiment, and the other configurations are the same.
In this embodiment, a cylindrical base 30 is attached to the bottom of the tank body 1 to form a fire extinguishing agent filling port 4 inside the base 30, and a bottom lid 5 is attached to the extinguishing agent filling port 4 with a lip 31 a. The fire extinguishing agent filling port 4 is closed by being fastened and fixed by a tightening nut 31. The bottom cover 5 is formed in a columnar shape with a flange 5a, the pressurized gas introduction port 10 extends from a part of the peripheral surface 5b to the upper end surface 5c, and the fire extinguisher from the other part of the peripheral surface 5b to the upper end surface 5c. Each of the discharge ports 11 is formed. A seat plate 7 is fastened and fixed to the bottom surface of the bottom cover 5 with bolts 32 so as to protrude from the outer periphery of the bottom surface of the bottom cover 5.
[0021]
A gas discharge pipe 13 and a peel pipe 15 having gas discharge holes 14 similar to those in the first embodiment are formed at the inner opening end 10a of the pressurized gas introduction port 10 of the bottom cover 5 facing the tank body 1. Is provided. Further, the inner opening end 11a facing the inside of the tank body 1 of the extinguishing agent discharge port portion 11 of the bottom lid 5 is made of a thin resin film or the like similar to the case of the first embodiment and sealed with the sealing plate 20. In this case, the sealing plate 20 is pressed and fixed via the holding ring 20a by a sealing plate fixture 21 made of a hollow male screw body screwed to the inner opening end 11a of the extinguishing agent discharge port portion 11.
[0022]
In order to close the extinguishing agent filling port 4 with the bottom lid 5, the upper end portion of the bottom lid 5 is fitted into the extinguishing agent filling port 4 and a packing is provided between the trough 5 a and the end face 30 a of the base 30. 12, a fastening nut 31 having a lip 31 a at the lower end of the bottom lid 5 is externally fitted, and the fastening nut 31 is fastened to a male screw 33 on the outer periphery of the extinguishing agent filling port 4. By this tightening, the flange 5a of the bottom lid 5 is pressed against the end surface 30a of the base 30 by the lip 31a via the packing 12, so that the bottom lid 5 can be mounted on the tank body 1 in a state of keeping airtightness.
[0023]
A pressurized gas introduction pipe 18 connected to a pressurized gas container 17 is connected to a pressurized gas at the outer opening end 10b of the pressurized gas inlet 10 facing the outside of the tank body 1 as in the first embodiment. It is connected to the outer opening end 10b of the introduction port 10 via a joint 19 that can be screwed together. Further, as in the first embodiment, the extinguishing agent discharge hose 22 of a predetermined length is directly connected to the outer opening end 11b facing the outside of the tank body 1 of the extinguishing agent discharge port 11 or the discharge pipe 23 is connected. And is connected to the outer opening end 11b via a joint 34 that can be screwed together. A nozzle 26 is attached to the tip of the fire extinguishing agent discharge hose 22 via a nozzle valve 25. In this case, if the extinguishing agent discharge port 11 is sealed with the same sealing plate 20 as in the first embodiment, the powder storage tank is applied to a predetermined pressure in the middle of the extinguishing agent discharge hose 22 during actual use. There is no need to dare to provide a release valve (release valve 42 in FIG. 5 ) for opening when pressed.
[0024]
The pressurized gas introduction pipe 18 and the extinguishing agent discharge hose 22 or the discharge pipe 23 are connected after the vacuum filling of the powder extinguishing agent B is completed and the bottom cover 5 is attached to the extinguishing agent filling port 4.
[0025]
Also in this embodiment, instead of attaching the peel pipe 15 to the gas discharge pipe 13, it is introduced into the gas discharge pipe 13 into the most advanced opening 13b of the gas discharge pipe 13 as shown in FIG. The sealing plate 27 that is ruptured by the pressurized gas pressure may be attached via the retaining ring 27a with the ring-shaped sealing plate attachment 21 in the same manner as the attachment of the sealing plate 20 to the extinguishing agent discharge port portion 11. .
[0026]
[0027]
【The invention's effect】
According to the present invention, the powder fire extinguisher can be vacuum-filled without any harmful effects such as sucking and clogging the pressurized gas introduction pipe and the fire extinguisher discharge pipe, and there is an advantage that a quick filling of the powder fire extinguisher can be realized.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a powder storage tank according to a first embodiment.
FIG. 2 is a cross-sectional view showing the bottom structure of the powder storage tank of the first embodiment.
FIG. 3 is a cross-sectional view showing a modification of the tip of the gas discharge pipe of the powder storage tank of the first embodiment.
FIG. 4 is a sectional view showing a bottom structure of a powder storage tank according to a second embodiment .
FIG. 5 is a schematic longitudinal sectional front view of a conventional powder storage tank.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tank main body 4 Extinguisher filling port 5 Bottom cover 6 Lid main body 7 Seat plate 10 Pressurized gas introduction part 11 Extinguishing agent discharge part 13 Gas discharge pipe 14 Gas discharge hole 15 Peel pipe

Claims

A fire extinguishing agent filling port is provided at the bottom of the tank body, and this extinguishing agent filling port is closed with a bottom lid provided with a pressurized gas introduction port and a fire extinguishing agent discharge port .
The bottom cover includes a lid body having the pressurized gas introduction port portion and the fire extinguishing agent discharge port portion, and a seat plate extending from the bottom side outer periphery of the lid body and fixed to the inner bottom plate of the storage box. A powder storage tank for mobile powder fire extinguishing equipment.

The inner open end facing the fire extinguishing agent outlet portion of the tank body, to claim 1 where the tank body by a pressurized gas is sealed with sealing plate to burst at an internal pressure of the tank body when pressurized The powder storage tank for the mobile powder fire extinguishing equipment described.

The inner open end facing the pressurized gas inlet portion of the tank body, according to claim 1 or 2 are sealed with sealing plate ruptures by pressurized gas pressure introduced into the pressurizing gas inlet portion Powder storage tank for mobile powder fire extinguishing equipment.

A gas discharge pipe having one or two or more gas discharge holes fixed to the peripheral wall at the inner opening end facing the tank body of the pressurized gas introduction port is fixed, and the gas discharge pipe is fixed. The powder storage tank for mobile powder fire extinguishing equipment according to claim 1 or 2 , wherein a peel pipe is fitted on the outer periphery of the peripheral wall having the gas discharge hole.