JP4460720B2

JP4460720B2 - Cleaning device and cleaning method for radiation hose of fire extinguishing equipment

Info

Publication number: JP4460720B2
Application number: JP2000147647A
Authority: JP
Inventors: 四朗平井; 健志堀
Original assignee: Yamato Protec Corp
Current assignee: Yamato Protec Corp
Priority date: 2000-05-19
Filing date: 2000-05-19
Publication date: 2010-05-12
Anticipated expiration: 2020-05-19
Also published as: JP2001327617A

Description

【０００１】
【発明の属する技術分野】
本発明は、消火設備の放射ホースのクリーニング装置およびクリーニング方法に係り、詳しくは、移動式粉末消火設備の放射ホースのクリーニング装置およびクリーニング方法に関する。
【０００２】
【従来の技術】
従来より、図１０に示す移動式粉末消火設備が知られている。移動式粉末消火設備は、粉末消火薬剤を貯蔵して格納箱１の内部に収納設置された粉末貯蔵タンク２と、この粉末貯蔵タンク２の外部に一体に取付られた高圧炭酸ガスボンベ３と、粉末貯蔵タンク２の内部と外部を連通させるサイホン式の放出管４と、粉末貯蔵タンク２の外部で放出弁５を介して放出管４に接続された放射ホース６と、この放射ホース６の先端部にノズル開閉弁７を介して接続された放射ノズル８とを備え、放射ホース６は、ホース掛け金具９などを介して格納箱１の内部に巻回状態で保持されている。また、高圧炭酸ガスボンベ３の出口は、ガス導入管１０を介して粉末貯蔵タンク２の内部に連通している。
【０００３】
このような構造の移動式粉末消火設備では、火災発生時において、まず、高圧炭酸ガスボンベ３の上端部に設けられているバルブハンドル３Ａを開放して、粉末貯蔵タンク２の内部に高圧炭酸ガスを供給して加圧する。つぎに、放出弁５を弁開し、ホース掛け金具９から放射ホース６を取外し、放射ノズル８を把持した状態で放射ホース６を引き伸ばし、ノズル開閉弁７を弁開することで、粉末貯蔵タンク２の内部に供給されている高圧炭酸ガスの加圧押し出し作用によって、粉末貯蔵タンク２内の粉末消火薬剤を放射ホース６先端の放射ノズル８から放射して消火作業を行う。
【０００４】
前記消火作業の終了後には、手元のノズル開閉弁７を弁閉したのち放出弁５を弁閉し、さらに高圧炭酸ガスボンベ３のバルブハンドル３Ａを弁閉する。ついで、ホース掛け金具９などを介して、放射ホース６を格納箱１の内部に巻回状態で保持する。なお、高圧炭酸ガスボンベ３の交換および粉末貯蔵タンク２への粉末消火薬剤の再充填はメンテナンス作業員によってなされる。
【０００５】
【発明が解決しようとする課題】
ところで、前記消火作業の実行によって粉末貯蔵タンク２内の粉末消火薬剤の全量が放射された場合には問題を生じることはない。しかし、粉末消火薬剤が未だ粉末貯蔵タンク２内に残存している状態で消火作業を終了すると、放射ホース６内に粉末消火薬剤が残留し、残留したままで放置しておくと、放射ホース６に目詰まりが生じるおそれを有している。特に、消火作業終了後において放射ホース６を格納箱１の内部で巻回状態で保持すると、放射ホース６内の残留粉末消火薬剤は、図１１に示すように、放射ホース６の下側の湾曲部に偏って強固に固化した目詰まり１４を発生させる。このような目詰まり１４が生じたままで放置しておくと、移動式粉末消火設備の再使用時に粉末消火薬剤が放射しなくなって、つぎの消火作業が妨げられる。
【０００６】
一方、消火作業時にノズル開閉弁７の弁箱シートと弁体シートの間に粉末消火薬剤が介在する場合がある。このように粉末消火薬剤が介在すると、ノズル開閉弁７の弁閉時の遮断性能が低下する。このため、消火作業終了後にノズル開閉弁７を弁閉しても、消火作業中に粉末貯蔵タンク２内部に供給された高圧炭酸ガスが除々に洩れることになり、この高圧炭酸ガスの洩れによって放射ホース６内の残留粉末消火薬剤がノズル開閉弁７側に押し付けられて強固に固化した目詰まりを発生させる。このようなノズル開閉弁７側の目詰まりが生じたままで放置しておくと、移動式粉末消火設備の再使用時に粉末消火薬剤が放射しなくなって、つぎの消火作業が妨げられる。このため、移動式粉末消火設備再使用の前段で放射ホース６内の残留粉末消火薬剤を排出するクリーニングが要求される。しかし、前記従来の移動式粉末消火設備では、放射ホースをクリーニングする機能を有していない。
【０００７】
そこで、本発明は、放射ホース内の残留粉末消火薬剤を排出するクリーニングを可能にして、再使用時に粉末消火薬剤を確実に放射させて、消火作業を実行することができる消火設備の放射ホースのクリーニング装置およびクリーニング方法を提供することを目的とする。
【０００８】
【課題を解決するための手段】
前記目的を達成するために、請求項１に記載の発明に係る消火設備の放射ホースのクリーニング装置は、粉末消火薬剤を貯蔵して固定された粉末貯蔵タンクと、この粉末貯蔵タンクの内部に加圧押し出し用高圧ガスを供給できるガスボンベと、前記粉末貯蔵タンクの内部と外部を連通させる放出管と、前記粉末貯蔵タンクの外部で放出弁を介して前記放出管に接続された放射ホースとを備え、前記ガスボンベから粉末貯蔵タンクの内部に供給された高圧ガスの加圧押し出し作用によって、前記放射ホースの先端部にノズル開閉弁を介して設けた放射ノズルから粉末消火薬剤を放射するように構成された粉末消火設備において、前記放出弁と前記ノズル開閉弁の間の放出弁側に偏ってクリーニング用ガスボンベの接続可能な第１接続口が開放可能に閉塞して設けられているとともに、前記ノズル開閉弁側に偏ってクリーニング用ガスボンベの接続可能な第２接続口が開放可能に閉塞して設けられていることを特徴としている。
【０００９】
また、前記目的を達成するために、請求項２に記載の発明に係る消火設備の放射ホースのクリーニング方法は、粉末消火薬剤を貯蔵して固定された粉末貯蔵タンクと、この粉末貯蔵タンクの内部に加圧押し出し用高圧ガスを供給できるガスボンベと、前記粉末貯蔵タンクの内部と外部を連通させる放出管と、前記粉末貯蔵タンクの外部で放出弁を介して前記放出管に接続された放射ホースとを備え、前記ガスボンベから粉末貯蔵タンクの内部に供給された高圧ガスの加圧押し出し作用によって、前記放射ホースの先端部にノズル開閉弁を介して設けた放射ノズルから粉末消火薬剤を放射するように構成された粉末消火設備において、前記ガスボンベから粉末貯蔵タンクの内部に供給された高圧ガスの加圧押し出し作用によって、前記放射ノズルから粉末消火薬剤を放射した消火作業の終了後に、前記放出弁を弁閉し、かつ前記ノズル開閉弁を弁開するとともに、放出弁とノズル開閉弁の間の放出弁側に偏って開放可能に閉塞して設けられている第１接続口を開放し、この開放された第１接続口にクリーニング用ガスボンベを接続し、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給して、放射ホース内部の残留粉末を放出する第１のクリーニング方法と、前記放射ノズルから粉末消火薬剤を放射した消火作業の終了後に、前記放出弁とノズル開閉弁を弁閉し、放出弁とノズル開閉弁の間の放出弁側に偏って開放可能に閉塞して設けられている第１接続口を開放するとともに、放出弁とノズル開閉弁の間のノズル開閉弁側に偏って開放可能に閉塞して設けられている第２接続口を開放し、この開放された第２接続口にクリーニング用ガスボンベを接続し、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給して、放射ホース内部の残留粉末を逆洗放出する第２のクリーニング方法の少なくともいずれか１つのクリーニング方法によって残留粉末を放出除去することを特徴としている。
【００１０】
請求項１、請求項２に記載の発明によれば、放出弁を弁閉し、ノズル開閉弁を弁開した再使用の前段状態で、第１接続口を開放し、この第１接続口にクリーニング用ガスボンベを接続して、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給することによって、放射ホース内部の残留粉末を放出除去することが簡単に行える。
また、放出弁とノズル開閉弁を弁閉した再使用の前段状態で、第２接続口を開放し、この第２接続口にクリーニング用ガスボンベを接続して、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給することによって、放射ホース内部の残留粉末をほぐして逆洗放出除去することが簡単に行える。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。図１は本発明の一実施の形態を示す全体構成図、図２は放出弁の一例を示す縦断面図、図３はノズル開閉弁の一例を示す縦断面図である。なお、格納箱１、粉末貯蔵タンク２、高圧炭酸ガスボンベ３、サイホン式の放出管４、放射ホース６、放射ノズル８、ホース掛け金具９、ガス導入管１０などの構造および作用は、図１０に示されている従来例と変わらないので、同一符号を付して重複した説明は省略する。
【００１２】
図１、図２および図３において、放出弁５の下流側には、後述するクリーニング用ガスボンベの接続可能な第１接続口１１が設けられ、この第１接続口１１は、常時はプラグ１２によって閉塞されている。また、ノズル開閉弁７の上流側には、後述するクリーニング用ガスボンベの接続可能な第２接続口１６が設けられ、この第２接続口１６は、常時はプラグ１７によって閉塞されている。
【００１３】
放出弁５は手動開閉式のボール弁によってなり、弁箱５Ａ、弁体５Ｂ、弁棒５Ｃ、ハンドル５Ｄを備え、ハンドル５Ｄの開閉操作が弁棒５Ｃを介して弁箱５Ａ内の弁室５Ｅに収容されている弁体５Ｂに伝達されて、弁体５Ｂを図示されている弁開状態またはこの弁開状態から弁棒５Ｃの軸まわりに９０度回動した弁閉状態に切換え保持する。また、弁室５Ｅは上流側通路５Ｆと下流側通路５Ｇにそれぞれ連通しており、上流側通路５Ｆに放出管４の出口が接続され、下流側通路５Ｇに放射ホース６の入口が接続されるとともに、この下流側通路５Ｇに連通して第１接続口１１を設けてある。
【００１４】
ノズル開閉弁７は手動開閉式のボール弁によってなり、弁箱７Ａ、弁体７Ｂ、弁棒７Ｃ、ハンドル７Ｄを備え、ハンドル７Ｄの開閉操作が弁棒７Ｃを介して弁箱７Ａ内の弁室７Ｅに収容されている弁体７Ｂに伝達されて、弁体７Ｂを図示されている弁開状態またはこの弁開状態から弁棒７Ｃの軸まわりに９０度回動した弁閉状態に切換え保持する。また、弁室７Ｅは上流側通路７Ｆと下流側通路７Ｇにそれぞれ連通しており、上流側通路７Ｆに放射ホース６の出口が接続され、下流側通路７Ｇに放射ノズル８の入口が接続されるとともに、この上流側通路７Ｆに連通して第２接続口１６を設けてある。
【００１５】
前記構成において、消火作業終了後に放出弁５を弁閉した再使用の前段状態で、放射ホース６に残留する粉末消火薬剤を放出除去するクリーニングに際しては、メンテナンス作業員によって図２のプラグ１２を取り外して、第１接続口１１を開放し、この開放された第１接続口１１に、図４に示すように、メンテナンス作業員によって持ち込まれたクリーニング用ガスボンベ（クリーニング用炭酸ガスボンベ）１３を接続し、そのバルブを開放してクリーニング用ガスボンベ１３から放射ホース６の内部にクリーニング用ガスを供給するとともにノズル開閉弁７を弁開する。これにより、放射ホース６内部の残留粉末を放射ノズル８から放出除去することができる。残留粉末の放出除去後に第１接続口１１とクリーニング用ガスボンベ１３との接続を解き、プラグ１２によって第１接続口１１を閉塞する。
【００１６】
一方、消火作業終了後に放出弁５を弁閉した再使用の前段状態で、ノズル開閉弁７側に押し付けられている放射ホース６内の残留粉末消火薬剤を放出除去するクリーニングに際しては、メンテナンス作業員によって図２のプラグ１２を取り外して、第１接続口１１を開放し、かつ図３のプラグ１７を取り外して、第２接続口１６を開放し、ノズル開閉弁７を弁閉する。そして、開放された第２接続口１６に、図５に示すように、メンテナンス作業員によって持ち込まれたクリーニング用ガスボンベ１３を接続し、そのバルブを開放してクリーニング用ガスボンベ１３から放射ホース６の内部にクリーニング用ガスを供給する。これにより、放射ホース６内部の残留粉末がノズル開閉弁７側に押し付けられて強固に固化して目詰まりを発生させていたとしても、この残留粉末をほぐして第１接続口１１から逆洗放出除去することができる。残留粉末の逆洗放出除去後に第２接続口１６とクリーニング用ガスボンベ１３との接続を解き、プラグ１７によって第２接続口１６を閉塞するとともに、プラグ１２によって第１接続口１１を閉塞する。
【００１７】
他方、消火作業終了後に放出弁５を弁閉した再使用の前段状態で、ノズル開閉弁７側に押し付けられている放射ホース６内の残留粉末消火薬剤を放出除去するクリーニングに際しては、メンテナンス作業員によって図２のプラグ１２を取り外して、第１接続口１１を開放し、かつ図３のプラグ１７を取り外して、第２接続口１６を開放し、ノズル開閉弁７を弁閉したのち、図６に示すように、メンテナンス作業員によって持ち込まれたクリーニング用ガスボンベ１３を、切換弁１８を介して開放された第１接続口１１と第２接続口１６に接続する。すなわち、切換弁１８の一次側ポートＰ１にクリーニング用ガスボンベ１３を接続し、切換弁１８の二次側ポートＰ３を第１接続口１１に、二次側ポートＰ４を第２接続口１６にそれぞれ接続したのち、一次側ポートＰ１と二次側ポートＰ４を連通させ、二次側ポートＰ３と排気ポートＰ２を連通させるように切換え保持する。そののちに、クリーニング用ガスボンベ１３のバルブを開放する。これにより、ガスボンベ１３内のクリーニングガスは、第２接続口１６から放射ホース６の内部に供給され、放射ホース６内部の残留粉末がノズル開閉弁７側に押し付けられて強固に固化して目詰まりを発生させていたとしても、この残留粉末をほぐして第１接続口１１→切換弁１８の二次側ポートＰ３→排気ポートＰ２の逆洗経路から逆洗放出除去することができる。
【００１８】
また、図７に示すように、切換弁１８の一次側ポートＰ１と二次側ポートＰ３を連通させ、二次側ポートＰ４と排気ポートＰ２を連通させるように切換え保持することによって、ガスボンベ１３内のクリーニングガスを第１接続口１１から放射ホース６の内部に供給し、放射ホース６内部の残留粉末を第２接続口１６→切換弁１８の二次側ポートＰ４→排気ポートＰ２の経路から放出除去することもできる。
【００１９】
前記実施の形態では、下流側通路５Ｇに連通して第１接続口１１を設けた放出弁５を使用しているが、図８に示すように、弁箱５Ａの下流側通路５Ｇにホースアダプター１５を接続し、このホースアダプター１５に第１接続口１１を設けた構成であってもよい。なお、この放出弁５において、図２の放出弁５と同一部分には同一符号を付してある。
【００２０】
また、上流側通路７Ｆに連通して第２接続口１６を設けたノズル開閉弁７を使用しているが、図９に示すように、弁箱７Ａの上流側通路７Ｆにホースアダプター１５を接続し、このホースアダプター１５に第２接続口１６を設けた構成であってもよい。なお、このノズル開閉弁７において、図３のノズル開閉弁７と同一部分には同一符号を付してある。
【００２１】
さらに、高圧炭酸ガスボンベ３に代えて窒素ガスボンベを使用し、クリーニング用炭酸ガスボンベ１３に代えて、クリーニング用窒素ガスボンベ１３を使用してもよい。窒素ガスボンベを使用することで環境の保全効果を高めることができる。ただし、窒素ガスボンベを使用する場合には、圧力調整用のレギュレーターが必要である。
【００２２】
【発明の効果】
請求項１、請求項２に記載の発明によれば、放出弁を弁閉し、ノズル開閉弁を弁開した再使用の前段状態で、第１接続口を開放し、この第１接続口クリーニング用ガスボンベを接続して、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給することによって、放射ホース内部の残留粉末を放出除去することができるので、再使用時に粉末消火薬剤を確実に放射させて、消火作業を実行することができる。また、放出弁とノズル開閉弁を弁閉した再使用の前段状態で、第２接続口を開放し、この第２接続口クリーニング用ガスボンベを接続して、該クリーニング用ガスボンベから放射ホースの内部にクリーニング用ガスを供給することによって、放射ホース内部の残留粉末を逆洗放出除去することができるので、放射ホース内部の残留粉末がノズル開閉弁側に押し付けられて強固に固化して目詰まりを発生させていたとしても、この残留粉末をほぐして逆洗放出除去することができる。このため、再使用時に粉末消火薬剤を確実に放射させて、消火作業を実行することが可能になる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す全体構成図である。
【図２】放出弁の一例を示す縦断面図である。
【図３】ノズル開放弁の一例を示す縦断面図である。
【図４】残留粉末の放出除去状態の一例を示す説明図である。
【図５】残留粉末の逆洗放出除去状態の一例を示す説明図である。
【図６】残留粉末の放出除去と逆洗放出除去の併用可能例を示す説明図である。
【図７】図６の切換弁を残留粉末の放出除去状態に切換えた説明図である。
【図８】放出弁の他の例を示す縦断面図である。
【図９】ノズル開放弁の他の例を示す縦断面図である。
【図１０】従来例の全体構成図である。
【図１１】放射ホースの下側湾曲部に偏って発生した目詰まりを拡大して示す説明図である。
【符号の説明】
２粉末貯蔵タンク
３高圧炭酸ガスボンベまたは窒素ガスボンベ（ガスボンベ）
４放出管
５放出弁
６放射ホース
７ノズル開閉弁
８放射ノズル
１１第１接続口
１３クリーニング用ガスボンベ
１６第２接続口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning device and a cleaning method for a radiation hose of a fire extinguishing facility, and more particularly to a cleaning device and a cleaning method for a radiation hose of a mobile powder fire suppression facility.
[0002]
[Prior art]
Conventionally, the mobile powder fire extinguishing equipment shown in FIG. 10 is known. The mobile powder fire extinguishing equipment includes a powder storage tank 2 that stores powder fire extinguishing chemicals and is housed in a storage box 1, a high-pressure carbon dioxide cylinder 3 that is integrally attached to the outside of the powder storage tank 2, and a powder. A siphon-type discharge pipe 4 that allows the inside and the outside of the storage tank 2 to communicate with each other, a radiation hose 6 that is connected to the discharge pipe 4 via a discharge valve 5 outside the powder storage tank 2, and a tip portion of the radiation hose 6 The radiating hose 6 is held in a wound state inside the storage box 1 via a hose bracket 9 or the like. Further, the outlet of the high-pressure carbon dioxide gas cylinder 3 communicates with the inside of the powder storage tank 2 through the gas introduction pipe 10.
[0003]
In the mobile powder fire extinguisher having such a structure, in the event of a fire, first, the valve handle 3A provided at the upper end of the high-pressure carbon dioxide gas cylinder 3 is opened, and high-pressure carbon dioxide gas is introduced into the powder storage tank 2. Supply and pressurize. Next, the discharge valve 5 is opened, the radiation hose 6 is removed from the hose bracket 9, the radiation hose 6 is stretched in a state where the radiation nozzle 8 is gripped, and the nozzle opening / closing valve 7 is opened. The fire extinguishing operation is performed by radiating the powder fire-extinguishing agent in the powder storage tank 2 from the radiation nozzle 8 at the tip of the radiation hose 6 by the pressure pushing action of the high-pressure carbon dioxide gas supplied to the interior of the material 2.
[0004]
After the extinguishing operation, the nozzle opening / closing valve 7 is closed, the discharge valve 5 is closed, and the valve handle 3A of the high-pressure carbon dioxide cylinder 3 is closed. Next, the radiation hose 6 is held in a wound state inside the storage box 1 via the hose bracket 9 or the like. The replacement of the high-pressure carbon dioxide cylinder 3 and the refilling of the powder extinguishing agent into the powder storage tank 2 are performed by a maintenance worker.
[0005]
[Problems to be solved by the invention]
By the way, there is no problem when the entire amount of the powder fire extinguishing agent in the powder storage tank 2 is emitted by the execution of the fire extinguishing operation. However, if the fire extinguishing operation is finished with the powder extinguishing agent still remaining in the powder storage tank 2, the powder extinguishing agent remains in the radiation hose 6, and if left untreated, the radiation hose 6 is left. There is a risk of clogging. In particular, when the radiation hose 6 is held in a wound state inside the storage box 1 after the extinguishing operation, the residual powder fire extinguishing agent in the radiation hose 6 is curved below the radiation hose 6 as shown in FIG. The clogging 14 is generated which is strongly solidified with a bias toward the portion. If such clogging 14 is left as it is, the powder fire extinguishing agent will not radiate when the mobile powder fire extinguishing equipment is reused, and the next fire extinguishing operation will be hindered.
[0006]
On the other hand, a powder fire extinguishing agent may be interposed between the valve box sheet and the valve body sheet of the nozzle opening / closing valve 7 during the fire fighting operation. When the powder fire extinguishing agent is interposed in this way, the shutoff performance when the nozzle on-off valve 7 is closed is lowered. For this reason, even if the nozzle opening / closing valve 7 is closed after the extinguishing operation, the high-pressure carbon dioxide gas supplied into the powder storage tank 2 gradually leaks during the extinguishing operation, and the leakage of the high-pressure carbon dioxide gas causes radiation. Residual powder fire-extinguishing agent in the hose 6 is pressed against the nozzle opening / closing valve 7 side to cause clogging that is firmly solidified. If the nozzle opening / closing valve 7 is left clogged, the powder fire extinguishing agent is not emitted when the mobile powder fire extinguishing equipment is reused, and the next fire extinguishing operation is hindered. For this reason, the cleaning which discharges | emits the residual powder fire extinguishing agent in the radiation hose 6 in the front | former stage of a mobile powder fire extinguishing equipment reuse is requested | required. However, the conventional mobile powder fire extinguishing equipment does not have a function of cleaning the radiation hose.
[0007]
Therefore, the present invention enables cleaning that discharges the residual powder fire extinguishing agent in the radiation hose, reliably emits the powder fire extinguishing agent at the time of reuse, and performs the fire extinguishing operation. It is an object to provide a cleaning device and a cleaning method.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a cleaning device for a radiation hose of a fire extinguishing facility according to claim 1 comprises a powder storage tank in which a powder fire extinguishing agent is stored and fixed, and an inside of the powder storage tank. A gas cylinder capable of supplying a high-pressure gas for pressure extrusion; a discharge pipe communicating the inside and the outside of the powder storage tank; and a radiation hose connected to the discharge pipe via a discharge valve outside the powder storage tank. The powder fire extinguishing agent is radiated from a radiation nozzle provided at the tip of the radiation hose via a nozzle opening / closing valve by a pressure pushing action of the high pressure gas supplied from the gas cylinder to the inside of the powder storage tank. In the powder fire extinguishing equipment, the first connection port that can be connected to the cleaning gas cylinder can be opened biased toward the discharge valve between the discharge valve and the nozzle opening / closing valve. Together provided to close the is characterized in that is provided a second connection port connectable to a cleaning gas cylinder biased to the nozzle on-off valve side is closed so as to be opened.
[0009]
In order to achieve the above object, a cleaning method for a radiation hose of a fire extinguishing equipment according to claim 2 comprises a powder storage tank storing and fixing a powder fire extinguishing agent, and an interior of the powder storage tank. A gas cylinder capable of supplying high-pressure gas for pressurizing and extrusion, a discharge pipe communicating the inside and outside of the powder storage tank, and a radiation hose connected to the discharge pipe via a discharge valve outside the powder storage tank; The powder fire extinguishing agent is radiated from a radiation nozzle provided via a nozzle opening / closing valve at the tip of the radiation hose by a pressure pushing action of the high pressure gas supplied from the gas cylinder to the inside of the powder storage tank. In the constructed powder fire extinguishing equipment, the radiation nose is generated by pressurizing the high pressure gas supplied from the gas cylinder into the powder storage tank. After the extinguishing operation radiating powder fire extinguishing agent from the valve, the discharge valve is closed and the nozzle opening / closing valve is opened, and it can be opened to the discharge valve side between the discharge valve and the nozzle opening / closing valve. The first connection port that is closed is opened, a cleaning gas cylinder is connected to the opened first connection port, and the cleaning gas is supplied from the cleaning gas cylinder to the inside of the radiation hose to emit radiation. After the completion of the first cleaning method for discharging the residual powder inside the hose and the fire extinguishing work in which the powder extinguishing agent is radiated from the radiation nozzle, the discharge valve and the nozzle on / off valve are closed. The first connection port that is provided so as to be openable and closed on the discharge valve side is opened, and the first connection port that is provided between the discharge valve and the nozzle open / close valve is closed on the nozzle open / close valve side. The second connection port is opened, a cleaning gas cylinder is connected to the opened second connection port, the cleaning gas is supplied from the cleaning gas cylinder to the inside of the radiation hose, and the residual inside the radiation hose The residual powder is discharged and removed by at least one of the second cleaning methods of backwashing and discharging the powder.
[0010]
According to the first and second aspects of the present invention, the first connection port is opened and the first connection port is opened in a stage before reuse in which the release valve is closed and the nozzle on-off valve is opened. By connecting a cleaning gas cylinder and supplying the cleaning gas from the cleaning gas cylinder to the inside of the radiation hose, the residual powder inside the radiation hose can be easily released and removed.
Further, in a state before reuse with the discharge valve and the nozzle opening / closing valve closed, the second connection port is opened, and a cleaning gas cylinder is connected to the second connection port, and the inside of the radiation hose is connected to the cleaning gas cylinder. By supplying a cleaning gas, it is easy to loosen the residual powder inside the radiation hose and remove it by backwashing.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing an example of a discharge valve, and FIG. 3 is a longitudinal sectional view showing an example of a nozzle opening / closing valve. The structure and operation of the storage box 1, the powder storage tank 2, the high-pressure carbon dioxide gas cylinder 3, the siphon type discharge pipe 4, the radiation hose 6, the radiation nozzle 8, the hose bracket 9, the gas introduction pipe 10, etc. are shown in FIG. Since it is not different from the conventional example shown, the same reference numerals are assigned and redundant description is omitted.
[0012]
1, 2, and 3, a first connection port 11 to which a later-described cleaning gas cylinder can be connected is provided on the downstream side of the discharge valve 5, and the first connection port 11 is normally connected by a plug 12. It is blocked. Further, on the upstream side of the nozzle opening / closing valve 7, a second connection port 16 to which a cleaning gas cylinder, which will be described later, can be connected is provided, and the second connection port 16 is normally closed by a plug 17.
[0013]
The release valve 5 is a manually opened / closed ball valve, and includes a valve box 5A, a valve body 5B, a valve stem 5C, and a handle 5D. The opening / closing operation of the handle 5D is performed via the valve stem 5C in the valve chamber 5E in the valve box 5A. The valve body 5B is switched to the valve open state shown in the figure or the valve closed state rotated 90 degrees around the axis of the valve stem 5C from the valve open state. Further, the valve chamber 5E communicates with the upstream passage 5F and the downstream passage 5G, the outlet of the discharge pipe 4 is connected to the upstream passage 5F, and the inlet of the radiation hose 6 is connected to the downstream passage 5G. In addition, a first connection port 11 is provided in communication with the downstream passage 5G.
[0014]
The nozzle opening / closing valve 7 is a manually opened / closed ball valve, and includes a valve box 7A, a valve body 7B, a valve rod 7C, and a handle 7D, and the opening / closing operation of the handle 7D is performed in the valve chamber 7A via the valve rod 7C. 7E is transmitted to the valve body 7B, and the valve body 7B is switched and held from the illustrated valve open state or from the valve open state to the valve closed state rotated 90 degrees around the axis of the valve rod 7C. . Further, the valve chamber 7E communicates with the upstream passage 7F and the downstream passage 7G, the outlet of the radiation hose 6 is connected to the upstream passage 7F, and the inlet of the radiation nozzle 8 is connected to the downstream passage 7G. In addition, a second connection port 16 is provided in communication with the upstream passage 7F.
[0015]
In the above configuration, the plug 12 shown in FIG. 2 is removed by a maintenance worker during cleaning to release and remove the powder fire extinguisher remaining in the radiation hose 6 in a state before reuse after the release valve 5 is closed after the extinguishing operation. The first connection port 11 is opened, and the opened first connection port 11 is connected with a cleaning gas cylinder (cleaning carbon dioxide gas cylinder) 13 brought in by a maintenance worker, as shown in FIG. The valve is opened to supply the cleaning gas from the cleaning gas cylinder 13 into the radiation hose 6 and the nozzle opening / closing valve 7 is opened. Thereby, the residual powder inside the radiation hose 6 can be discharged and removed from the radiation nozzle 8. After releasing and removing the residual powder, the first connection port 11 and the cleaning gas cylinder 13 are disconnected, and the first connection port 11 is closed by the plug 12.
[0016]
On the other hand, in the pre-reuse state in which the release valve 5 is closed after the extinguishing operation is completed, maintenance workers are required to release and remove the residual powder extinguishing agent in the radiation hose 6 pressed against the nozzle opening / closing valve 7 side. 2 is removed, the first connection port 11 is opened, and the plug 17 of FIG. 3 is removed, the second connection port 16 is opened, and the nozzle opening / closing valve 7 is closed. Then, as shown in FIG. 5, a cleaning gas cylinder 13 brought in by a maintenance worker is connected to the opened second connection port 16, and the valve is opened so that the inside of the radiation hose 6 can be opened from the cleaning gas cylinder 13. Supply cleaning gas to As a result, even if the residual powder inside the radiation hose 6 is pressed against the nozzle opening / closing valve 7 and solidifies firmly to cause clogging, the residual powder is loosened and backwashed and discharged from the first connection port 11. Can be removed. After backwashing and removing the residual powder, the second connection port 16 and the cleaning gas cylinder 13 are disconnected, and the plug 17 closes the second connection port 16 and the plug 12 closes the first connection port 11.
[0017]
On the other hand, in the pre-reuse state in which the release valve 5 is closed after the extinguishing operation is completed, maintenance workers are required to release and remove the residual powder extinguishing agent in the radiation hose 6 pressed against the nozzle opening / closing valve 7 side. 2 is removed, the first connection port 11 is opened, the plug 17 of FIG. 3 is removed, the second connection port 16 is opened, and the nozzle opening / closing valve 7 is closed. As shown, the cleaning gas cylinder 13 brought in by the maintenance worker is connected to the first connection port 11 and the second connection port 16 opened via the switching valve 18. That is, the cleaning gas cylinder 13 is connected to the primary port P1 of the switching valve 18, the secondary port P3 of the switching valve 18 is connected to the first connection port 11, and the secondary port P4 is connected to the second connection port 16. After that, the primary side port P1 and the secondary side port P4 are communicated, and the secondary side port P3 and the exhaust port P2 are communicated and held. After that, the valve of the cleaning gas cylinder 13 is opened. As a result, the cleaning gas in the gas cylinder 13 is supplied from the second connection port 16 to the inside of the radiation hose 6, and the residual powder inside the radiation hose 6 is pressed against the nozzle opening / closing valve 7 side to be solidified firmly and clogged. Even if this occurs, the residual powder can be loosened and removed from the backwash path of the first connection port 11 → secondary port P3 of the switching valve 18 → exhaust port P2.
[0018]
Further, as shown in FIG. 7, the primary side port P1 and the secondary side port P3 of the switching valve 18 are communicated, and the secondary side port P4 and the exhaust port P2 are communicated and held so that the inside of the gas cylinder 13 Is supplied to the inside of the radiation hose 6 from the first connection port 11, and the residual powder in the radiation hose 6 is discharged from the route of the second connection port 16 → secondary port P4 of the switching valve 18 → exhaust port P2. It can also be removed.
[0019]
In the above-described embodiment, the discharge valve 5 that communicates with the downstream passage 5G and is provided with the first connection port 11 is used. As shown in FIG. 8, the hose adapter is connected to the downstream passage 5G of the valve box 5A. 15 may be connected, and the hose adapter 15 may be provided with the first connection port 11. In addition, in this discharge valve 5, the same code | symbol is attached | subjected to the same part as the discharge valve 5 of FIG.
[0020]
Moreover, although the nozzle opening / closing valve 7 which provided the 2nd connection port 16 in communication with the upstream channel | path 7F is used, as shown in FIG. 9, the hose adapter 15 is connected to the upstream channel | path 7F of the valve box 7A. And the structure which provided the 2nd connection port 16 in this hose adapter 15 may be sufficient. In this nozzle opening / closing valve 7, the same parts as those of the nozzle opening / closing valve 7 in FIG.
[0021]
Further, a nitrogen gas cylinder may be used instead of the high-pressure carbon dioxide gas cylinder 3, and a cleaning nitrogen gas cylinder 13 may be used instead of the cleaning carbon dioxide gas cylinder 13. By using a nitrogen gas cylinder, the environmental conservation effect can be enhanced. However, when using a nitrogen gas cylinder, a regulator for pressure adjustment is required.
[0022]
【The invention's effect】
According to the first and second aspects of the present invention, the first connection port is opened and the first connection port cleaning is performed in the pre-reuse state in which the release valve is closed and the nozzle on-off valve is opened. By connecting a gas cylinder and supplying cleaning gas from the cleaning gas cylinder to the inside of the radiation hose, the residual powder inside the radiation hose can be released and removed. Let it radiate and perform fire fighting work. Also, in a state before reuse with the discharge valve and the nozzle opening / closing valve closed, the second connection port is opened, and the second connection port cleaning gas cylinder is connected to the inside of the radiation hose from the cleaning gas cylinder. By supplying cleaning gas, the residual powder inside the radiation hose can be backwashed and removed, so the residual powder inside the radiation hose is pressed against the nozzle open / close valve side and solidifies firmly, causing clogging. Even if it has been made, the residual powder can be loosened and removed by backwashing. For this reason, it becomes possible to carry out the fire extinguishing operation by reliably emitting the powder fire extinguishing agent at the time of reuse.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing an example of a discharge valve.
FIG. 3 is a longitudinal sectional view showing an example of a nozzle release valve.
FIG. 4 is an explanatory view showing an example of a state of releasing and removing residual powder.
FIG. 5 is an explanatory view showing an example of a backwash discharge removal state of residual powder.
FIG. 6 is an explanatory view showing an example in which residual powder release removal and backwash release removal can be used together.
FIG. 7 is an explanatory diagram in which the switching valve of FIG. 6 is switched to a state where residual powder is released and removed.
FIG. 8 is a longitudinal sectional view showing another example of the release valve.
FIG. 9 is a longitudinal sectional view showing another example of a nozzle release valve.
FIG. 10 is an overall configuration diagram of a conventional example.
FIG. 11 is an explanatory view showing, in an enlarged manner, clogging that is generated in a biased manner at the lower curved portion of the radiation hose.
[Explanation of symbols]
2 Powder storage tank 3 High-pressure carbon dioxide gas cylinder or nitrogen gas cylinder (gas cylinder)
4 Release pipe 5 Release valve 6 Radiation hose 7 Nozzle on-off valve 8 Radiation nozzle 11 First connection port 13 Gas cylinder 16 for cleaning Second connection port

Claims

A powder storage tank for storing and fixing a powder fire extinguishing agent, a gas cylinder capable of supplying high-pressure gas for pressurized extrusion into the powder storage tank, a discharge pipe communicating the inside and the outside of the powder storage tank, and A radiation hose connected to the discharge pipe via a discharge valve outside the powder storage tank, and a tip of the radiation hose by a pressure pushing action of high-pressure gas supplied from the gas cylinder to the inside of the powder storage tank In the powder fire extinguishing equipment configured to radiate the powder fire extinguishing agent from the radiation nozzle provided in the part via the nozzle opening / closing valve, the cleaning gas cylinder is biased toward the discharge valve side between the discharge valve and the nozzle opening / closing valve. A connectable first connection port is provided so as to be openable, and a cleaning gas cylinder can be connected to the nozzle opening / closing valve side. The cleaning device of the radiation hose extinguishing facility second connection port, such is characterized by being provided to close the openable.

A powder storage tank for storing and fixing a powder fire extinguishing agent, a gas cylinder capable of supplying high-pressure gas for pressurized extrusion into the powder storage tank, a discharge pipe communicating the inside and the outside of the powder storage tank, and A radiation hose connected to the discharge pipe via a discharge valve outside the powder storage tank, and a tip of the radiation hose by a pressure pushing action of high-pressure gas supplied from the gas cylinder to the inside of the powder storage tank In the powder fire extinguishing equipment configured to radiate the powder fire extinguishing agent from the radiation nozzle provided in the part via the nozzle opening and closing valve, by the pressure extrusion action of the high pressure gas supplied from the gas cylinder to the inside of the powder storage tank, When the discharge valve is closed and the nozzle opening / closing valve is opened after the extinguishing operation of radiating powder extinguishing agent from the radiation nozzle In addition, the first connection port that is provided so as to be openable and biased toward the discharge valve side between the discharge valve and the nozzle opening / closing valve is opened, and a cleaning gas cylinder is connected to the opened first connection port. And a first cleaning method for supplying a cleaning gas from the cleaning gas cylinder to the inside of the radiation hose to release residual powder inside the radiation hose, and an end of the fire extinguishing operation in which the powder fire extinguishing agent is emitted from the radiation nozzle. Later, the discharge valve and the nozzle opening / closing valve are closed, and the first connection port provided so as to be openable and biased toward the discharge valve side between the discharge valve and the nozzle opening / closing valve is opened, and the discharge valve A second connection port that is openably closed to the nozzle on / off valve side between the nozzle and the valve on / off valve is opened, and a cleaning gas cylinder is connected to the opened second connection port, A cleaning gas is supplied into the inside of the radiation hose from the cleaning gas cylinder, and the residual powder is discharged and removed by at least one of the second cleaning methods of backwashing and discharging the residual powder inside the radiation hose. A method for cleaning a radiation hose of a fire extinguishing facility.