JP2013141584A - Explosion suppression equipment - Google Patents
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- JP2013141584A JP2013141584A JP2012004472A JP2012004472A JP2013141584A JP 2013141584 A JP2013141584 A JP 2013141584A JP 2012004472 A JP2012004472 A JP 2012004472A JP 2012004472 A JP2012004472 A JP 2012004472A JP 2013141584 A JP2013141584 A JP 2013141584A
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- 238000004880 explosion Methods 0.000 title claims abstract description 93
- 230000001629 suppression Effects 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 98
- 239000007789 gas Substances 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 238000002347 injection Methods 0.000 claims description 48
- 239000007924 injection Substances 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 26
- 238000009825 accumulation Methods 0.000 claims description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 21
- 239000001569 carbon dioxide Substances 0.000 claims description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000003595 mist Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000003570 air Substances 0.000 claims description 5
- 229940124568 digestive agent Drugs 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 230000002265 prevention Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
Description
本発明は、爆発を抑制し、圧力の急上昇により処理施設や施設周囲に与える損傷を避ける爆発抑制装置に関する。 The present invention relates to an explosion suppression device that suppresses an explosion and avoids damage to a processing facility and the surroundings of a facility due to a sudden rise in pressure.
破砕プラントは、廃家電の処理などの資源再生工場や粗大ゴミを処理する廃棄物処理施設に欠かせない設備である。破砕プラントに設けられた高速破砕機としては、特に回転式破砕機が数多く採用されている。回転式破砕機は、回転力を利用して破砕対象に衝撃を与えて破砕するものである。そのため、破砕の過程でつねに衝撃による火花が発生する。
一方、処理対象となる廃金属類や収集されたゴミには、ガスボンベやスプレー缶および揮発性塗料などの発火源が多く含まれ、発火源を破砕機に投入する前に完全に除去することは困難である。発火源が破砕機に入ると、容器が破砕されたことで可燃性ガスが放出され、衝撃火花により着火し爆発する。また、破砕時に発生した粉塵による爆発の危険もある。
The crushing plant is an indispensable facility for resource recycling factories such as processing of waste home appliances and waste processing facilities for processing oversized garbage. As a high-speed crusher provided in the crushing plant, many rotary crushers are employed in particular. The rotary crusher uses a rotational force to impact and crush the object to be crushed. Therefore, sparks are always generated by impact during the crushing process.
On the other hand, waste metals to be treated and collected garbage contain many ignition sources such as gas cylinders, spray cans and volatile paints, and it is not possible to completely remove the ignition source before putting it into the crusher. Have difficulty. When the ignition source enters the crusher, combustible gas is released by crushing the container, and it is ignited by an impact spark and explodes. There is also a risk of explosion due to dust generated during crushing.
爆発から設備と人員を守るために、高速破砕機に爆発防止装置または爆発抑制装置が設けられる。実用化されている爆発防止装置は、主に水蒸気の注入により爆発の発生を防止するものである。つまり、高速破砕機の運転中に破砕機内に水蒸気を連続に注入し、破砕機内の酸素濃度をつねに可燃性ガスの爆発限界以下に抑えている（非特許文献１参照）。
しかし、上述の爆発防止装置においては、つねに大量の水蒸気を注入しなければならないため、水蒸気を発生させるための燃料費が高くなってしまう。また、水蒸気が凝縮して水となるため、その水が破砕物に多く付着し、廃棄物の埋立工程または焼却工程において、処理費用または焼却費用が発生するという問題があった。
そこで、窒素富化空気を生産する窒素付加装置を設け、破砕機や搬出ピットに対して、ウォーターミストとともに窒素富化空気を放出することも提案されている（特許文献１参照）。
In order to protect equipment and personnel from the explosion, the high speed crusher is provided with an explosion prevention device or an explosion suppression device. An explosion prevention device that has been put to practical use is intended to prevent the occurrence of an explosion mainly by injecting water vapor. That is, water vapor is continuously injected into the crusher during the operation of the high-speed crusher, and the oxygen concentration in the crusher is always kept below the explosive limit of the combustible gas (see Non-Patent Document 1).
However, in the above-described explosion prevention device, since a large amount of water vapor must always be injected, the fuel cost for generating water vapor increases. In addition, since water vapor is condensed to form water, a large amount of the water adheres to the crushed material, and there is a problem that processing costs or incineration costs are generated in the waste landfill process or incineration process.
Therefore, it has also been proposed to provide a nitrogen addition device for producing nitrogen-enriched air and release the nitrogen-enriched air together with water mist to the crusher and the carry-out pit (see Patent Document 1).
爆発抑制装置は、爆発の発生を防止することではなく、発生した爆発を早期に検知し、消火剤の速やかな放出により、爆発を抑制するものである。現在使用される爆発抑制装置には、封板で密閉されて粉末消火剤が充填された窒素加圧の消火容器が用いられ、爆発初期の圧力上昇が検知されると、電気雷管で加圧タンクの封板を破壊し、粉末消火剤を瞬時に放出して爆発を抑制する。水蒸気注入式の爆発防止装置に比べ、装置を常時に作動する必要がないため、維持管理の手間が少ないという利点がある。 The explosion suppression device does not prevent the occurrence of an explosion, but detects the explosion that has occurred at an early stage and suppresses the explosion by promptly releasing a fire extinguishing agent. Currently used explosion suppression devices use a nitrogen pressurized fire extinguisher that is sealed with a sealing plate and filled with a powder fire extinguisher. Destroys the sealing plate and releases the powder extinguisher instantly to suppress the explosion. Compared to the steam injection type explosion prevention device, it is not necessary to operate the device at all times.
既存の爆発抑制装置で用いる粉末消火剤は、燃焼を抑制する効果が高く、また粒子径が小さく、空間に散布しやすい利点があるが、消火容器への自動充填は困難であり、取り替え費用が高い。
すなわち、粉末消火剤と高圧気体の封入には、封板を用いており、作動後は封板が破壊されるため、消火容器自体を全て取り替え、専門の工場で再充填しなければならない。そのため、取り替え費用が高額で、取り替え期間も必要となる。また、取り替え期間中は、プラントの運転を行うことができないため、プラント停止による損害も小さくない。
Powder extinguishing agents used in existing explosion suppression devices are highly effective in suppressing combustion and have the advantage of being small in particle size and easy to spread in the space, but are difficult to fill automatically into fire extinguishing containers and are expensive to replace. high.
That is, a sealing plate is used to enclose the powder fire extinguisher and the high-pressure gas. Since the sealing plate is destroyed after the operation, all the fire-extinguishing containers themselves must be replaced and refilled in a specialized factory. Therefore, the replacement cost is high and a replacement period is also required. Further, since the plant cannot be operated during the replacement period, the damage caused by the plant stoppage is not small.
上記の問題点に鑑み、本発明は、破砕プラントのような設備において、爆発抑制装置の作動後、消火剤が直ちに自動的に充填され、生産停止時間を大幅に短縮でき、また、ランニングコストも低廉に抑えられる爆発抑制システムを提供することを目的とする。 In view of the above-mentioned problems, the present invention can automatically reduce the production stop time in an installation such as a crushing plant, immediately after the operation of the explosion suppression device, and can greatly reduce the production stop time. An object of the present invention is to provide an explosion suppression system that can be suppressed at low cost.
請求項１記載の本発明の爆発抑制装置は、破砕機又は粉砕機を用いる処理施設に設置する爆発抑制装置であって、前記処理施設における爆発を検知する爆発検知ユニットと、前記処理施設に対して消火剤を噴射する消火剤噴射ユニットと、前記消化剤噴射ユニットに、前記消火剤を補充する充填加圧ユニットと、を備え、前記消火剤噴射ユニットは、加圧状態で前記消火剤を充填している消火容器と、前記消火容器内の前記消火剤を前記処理施設に導く消火剤噴射管と、前記消火剤噴射管を開閉する噴射用電磁弁と、を有し、前記充填加圧ユニットは、前記消火容器に前記消火剤を供給する消火剤供給管と、前記消火容器に加圧気体を供給する加圧気体供給管と、前記消火剤供給管及び前記加圧気体供給管を開閉する供給用電磁弁と、を有し、前記爆発検知ユニットで爆発を検知すると、前記噴射用電磁弁を開とし、所定時間の経過後に前記噴射用電磁弁を閉とし、前記噴射用電磁弁を閉とした後に、前記供給用電磁弁を開とする制御手段を有することを特徴とする。
請求項２記載の本発明は、請求項１に記載の爆発抑制装置において、前記充填加圧ユニットが、前記消火剤としての水を貯水する貯水／蓄圧タンクと、前記貯水／蓄圧タンクを加圧するコンプレッサと、を備え、前記消火剤供給管は、前記消火容器と前記貯水／蓄圧タンクとを接続し、前記加圧気体供給管は、前記消火容器と前記コンプレッサとを接続することを特徴とする。
請求項３記載の本発明は、請求項１に記載の爆発抑制装置において、前記充填加圧ユニットが、前記消火剤としての水を貯水する貯水タンクと、前記加圧気体供給管に加圧気体を供給する圧力ボンベと、を備え、前記消火剤供給管は、前記消火容器と前記貯水タンクとを接続し、前記消火剤供給管に送液ポンプを設けたことを特徴とする。
請求項４記載の本発明は、請求項１に記載の爆発抑制装置において、前記充填加圧ユニットが、前記加圧気体供給管に加圧気体を供給する圧力ボンベを備え、前記消火剤供給管を水道配管に接続したことを特徴とする。
請求項５記載の本発明は、請求項１から請求項４に記載の爆発抑制装置において、前記消火容器には、前記消火剤の液量を検出する液量検知センサを設け、前記制御手段は、前記液量検知センサからの信号によって供給する前記消火剤の液量を決定し、前記消火容器内の気体空間を所定空間に維持することを特徴とする。
請求項６記載の本発明は、請求項１から請求項５に記載の爆発抑制装置において、前記供給用電磁弁として三方切替バルブを用い、前記三方切替バルブの流出側に前記消火容器を接続し、前記三方切替バルブの流入側に、前記消火剤供給管と前記加圧気体供給管とを接続したことを特徴とする。
請求項７記載の本発明は、請求項１から請求項６に記載の爆発抑制装置において、前記加圧気体として、空気、窒素、二酸化炭素のいずれかまたはそれらの混合ガスを用いたことを特徴とする。
請求項８記載の本発明は、請求項１から請求項７に記載の爆発抑制装置において、前記消火剤として、粒子径５０μm以下のウォーターミストを用いたことを特徴とする。
The explosion suppression device of the present invention according to claim 1 is an explosion suppression device installed in a treatment facility using a crusher or a pulverizer, wherein the explosion detection unit detects an explosion in the treatment facility, and the treatment facility. A fire extinguishing agent injection unit that injects the fire extinguishing agent, and a filling and pressurizing unit that replenishes the extinguishing agent in the digestive agent injection unit, and the fire extinguishing agent injection unit is filled with the fire extinguishing agent in a pressurized state. A fire extinguishing container, a fire extinguishing agent injection pipe for guiding the extinguishing agent in the fire extinguishing container to the processing facility, and an electromagnetic solenoid valve for opening and closing the extinguishing agent injection pipe, Open and close the extinguishing agent supply pipe for supplying the extinguishing agent to the extinguishing container, the pressurized gas supply pipe for supplying pressurized gas to the extinguishing container, the extinguishing agent supply pipe and the pressurized gas supply pipe A solenoid valve for supply When an explosion is detected by the explosion detection unit, the solenoid valve for injection is opened, the solenoid valve for injection is closed after a lapse of a predetermined time, and the solenoid valve for supply is closed after the solenoid valve for injection is closed. It has the control means which opens.
According to a second aspect of the present invention, in the explosion suppressing device according to the first aspect, the filling and pressurizing unit pressurizes the water storage / accumulation tank for storing water as the extinguishing agent and the water storage / accumulation tank. The fire extinguishing agent supply pipe connects the fire extinguishing container and the water storage / accumulation tank, and the pressurized gas supply pipe connects the fire extinguishing container and the compressor. .
A third aspect of the present invention is the explosion suppressing device according to the first aspect, wherein the filling and pressurizing unit stores a water storage tank for storing water as the extinguishing agent, and a pressurized gas in the pressurized gas supply pipe. The fire extinguisher supply pipe connects the fire extinguishing container and the water storage tank, and a liquid feed pump is provided in the fire extinguisher supply pipe.
According to a fourth aspect of the present invention, in the explosion suppressing device according to the first aspect, the filling and pressurizing unit includes a pressure cylinder for supplying a pressurized gas to the pressurized gas supply pipe, and the fire extinguishing agent supply pipe is provided. Is connected to a water pipe.
According to a fifth aspect of the present invention, in the explosion suppressing device according to any one of the first to fourth aspects, the fire extinguishing container is provided with a liquid amount detection sensor for detecting a liquid amount of the fire extinguishing agent, and the control means includes The liquid amount of the extinguishing agent to be supplied is determined by a signal from the liquid amount detection sensor, and the gas space in the fire extinguishing container is maintained in a predetermined space.
According to a sixth aspect of the present invention, in the explosion suppression device according to the first to fifth aspects, a three-way switching valve is used as the supply solenoid valve, and the fire-extinguishing container is connected to the outflow side of the three-way switching valve. The fire extinguishing agent supply pipe and the pressurized gas supply pipe are connected to the inflow side of the three-way switching valve.
According to a seventh aspect of the present invention, in the explosion suppression device according to the first to sixth aspects, any one of air, nitrogen, carbon dioxide, or a mixed gas thereof is used as the pressurized gas. And
The present invention according to claim 8 is characterized in that, in the explosion suppressing device according to claims 1 to 7, a water mist having a particle diameter of 50 μm or less is used as the fire extinguishing agent.
本発明によれば、消火作動後、消火容器に消火剤を補充することができ、短時間に多量の消火剤を噴射して、効率よく消火を行い、燃焼を抑制することができる。 According to the present invention, a fire extinguisher can be replenished in a fire extinguishing container after a fire extinguishing operation, and a large amount of fire extinguishing agent can be injected in a short time to efficiently extinguish and suppress combustion.
本発明の第１の実施の形態による爆発抑制装置は、処理施設における爆発を検知する爆発検知ユニットと、処理施設に対して消火剤を噴射する消火剤噴射ユニットと、消化剤噴射ユニットに、消火剤を補充する充填加圧ユニットとを備え、消火剤噴射ユニットは、
加圧状態で消火剤を充填している消火容器と、消火容器内の消火剤を処理施設に導く消火剤噴射管と、消火剤噴射管を開閉する噴射用電磁弁とを有し、充填加圧ユニットは、消火容器に消火剤を供給する消火剤供給管と、消火容器に加圧気体を供給する加圧気体供給管と、消火剤供給管及び加圧気体供給管を開閉する供給用電磁弁とを有し、爆発検知ユニットで爆発を検知すると、噴射用電磁弁を開とし、所定時間の経過後に噴射用電磁弁を閉とし、噴射用電磁弁を閉とした後に、供給用電磁弁を開とする制御手段を有するものである。本実施の形態によれば、充填加圧ユニットを設けることで消火作動後、消火容器に消火剤を補充することができ、消火容器を設けることで、短時間に多量の消火剤を噴射して、効率よく消火を行い、燃焼を抑制することができる。
An explosion suppression device according to a first embodiment of the present invention includes: an explosion detection unit that detects an explosion in a treatment facility; a fire extinguisher injection unit that injects a fire extinguishing agent into the treatment facility; A fire-extinguishing agent injection unit,
A fire extinguishing container filled with a fire extinguisher in a pressurized state, a fire extinguishing agent injection pipe that guides the extinguishing agent in the fire extinguishing container to a treatment facility, and a solenoid valve for injection that opens and closes the extinguishing agent injection pipe. The pressure unit includes a fire extinguisher supply pipe for supplying a fire extinguisher to the fire extinguishing container, a pressurized gas supply pipe for supplying pressurized gas to the fire extinguishing container, a supply electromagnetic for opening and closing the fire extinguisher supply pipe and the pressurized gas supply pipe. When the explosion detection unit detects an explosion, the injection solenoid valve is opened, the injection solenoid valve is closed after a lapse of a predetermined time, the injection solenoid valve is closed, and then the supply solenoid valve It has a control means which opens. According to the present embodiment, the fire extinguishing agent can be replenished to the fire extinguishing container after the fire extinguishing operation by providing the filling pressure unit, and the fire extinguishing container is provided to inject a large amount of the fire extinguishing agent in a short time. The fire can be efficiently extinguished and combustion can be suppressed.
本発明の第２の実施の形態は、第１の実施の形態による爆発抑制装置において、充填加圧ユニットが、消火剤としての水を貯水する貯水／蓄圧タンクと、貯水／蓄圧タンクを加圧するコンプレッサとを備え、消火剤供給管は、消火容器と貯水／蓄圧タンクとを接続し、加圧気体供給管は、消火容器とコンプレッサとを接続するものである。本実施の形態によれば、水を消火剤として用いることができ、コンプレッサによって消火容器と貯水／蓄圧タンクとを加圧できる。 According to a second embodiment of the present invention, in the explosion suppression device according to the first embodiment, the filling and pressurizing unit pressurizes the water storage / accumulation tank for storing water as a fire extinguishing agent and the water storage / accumulation tank. The fire extinguisher supply pipe connects the fire extinguishing container and the water storage / accumulation tank, and the pressurized gas supply pipe connects the fire extinguishing container and the compressor. According to this Embodiment, water can be used as a fire extinguisher and a fire extinguishing container and a water storage / accumulation tank can be pressurized with a compressor.
本発明の第３の実施の形態は、第１の実施の形態による爆発抑制装置において、充填加圧ユニットが、消火剤としての水を貯水する貯水タンクと、加圧気体供給管に加圧気体を供給する圧力ボンベとを備え、消火剤供給管は、消火容器と貯水タンクとを接続し、消火剤供給管に送液ポンプを設けたものである。本実施の形態によれば、水を消火剤として用いることができ、圧力ボンベによって消火容器を加圧できる。 According to a third embodiment of the present invention, in the explosion suppression device according to the first embodiment, the filling and pressurizing unit includes a water storage tank for storing water as a fire extinguishing agent, and a pressurized gas in a pressurized gas supply pipe. The fire extinguisher supply pipe is connected to a fire extinguishing container and a water storage tank, and a liquid feed pump is provided in the fire extinguisher supply pipe. According to this Embodiment, water can be used as a fire extinguisher and a fire extinguishing container can be pressurized with a pressure cylinder.
本発明の第４の実施の形態は、第１の実施の形態による爆発抑制装置において、充填加圧ユニットが、加圧気体供給管に加圧気体を供給する圧力ボンベを備え、消火剤供給管を水道配管に接続したものである。本実施の形態によれば、水道水を消火剤として用いることができ、圧力ボンベによって消火容器を加圧できる。 According to a fourth embodiment of the present invention, in the explosion suppression device according to the first embodiment, the filling and pressurizing unit includes a pressure cylinder that supplies a pressurized gas to the pressurized gas supply pipe, and the fire extinguisher supply pipe Is connected to the water pipe. According to this Embodiment, a tap water can be used as a fire extinguisher and a fire extinguishing container can be pressurized with a pressure cylinder.
本発明の第５の実施の形態は、第１から第４の実施の形態による爆発抑制装置において、消火容器には、消火剤の液量を検出する液量検知センサを設け、制御手段は、液量検知センサからの信号によって供給する消火剤の液量を決定し、消火容器内の気体空間を所定空間に維持するものである。本実施の形態によれば、消火容器内に気体空間を設けることで、消火容器内の圧力を高め、短時間に多量の消火剤を消火容器から噴射することができる。 According to a fifth embodiment of the present invention, in the explosion suppression device according to the first to fourth embodiments, the fire extinguishing container is provided with a liquid amount detection sensor for detecting the liquid amount of the fire extinguishing agent, and the control means includes: The liquid amount of the extinguishing agent to be supplied is determined by a signal from the liquid amount detection sensor, and the gas space in the fire extinguishing container is maintained in a predetermined space. According to the present embodiment, by providing the gas space in the fire extinguishing container, the pressure in the fire extinguishing container can be increased, and a large amount of fire extinguishing agent can be injected from the fire extinguishing container in a short time.
本発明の第６の実施の形態は、第１から第５の実施の形態による爆発抑制装置において、供給用電磁弁として三方切替バルブを用い、三方切替バルブの流出側に消火容器を接続し、三方切替バルブの流入側に、消火剤供給管と加圧気体供給管とを接続した
ものである。本実施の形態によれば、三方切替バルブを用いることで、充填加圧ユニットから消火剤噴射ユニットへの供給管を一つとすることができ、三方切替バルブの切り替えによって消火剤と加圧気体とを供給することができる。
A sixth embodiment of the present invention uses a three-way switching valve as a supply solenoid valve in the explosion suppression device according to the first to fifth embodiments, and connects a fire extinguishing container to the outflow side of the three-way switching valve. A fire extinguisher supply pipe and a pressurized gas supply pipe are connected to the inflow side of the three-way switching valve. According to the present embodiment, by using the three-way switching valve, one supply pipe from the filling pressurization unit to the extinguishing agent injection unit can be made, and by switching the three-way switching valve, the extinguishing agent and the pressurized gas Can be supplied.
本発明の第７の実施の形態は、第１から第６の実施の形態による爆発抑制装置において、加圧気体として、空気、窒素、二酸化炭素のいずれかまたはそれらの混合ガスを用いたものである。本実施の形態によれば、加圧気体として空気、窒素、又は二酸化炭素を用いることができる。 The seventh embodiment of the present invention uses any one of air, nitrogen, carbon dioxide or a mixed gas thereof as the pressurized gas in the explosion suppression device according to the first to sixth embodiments. is there. According to this embodiment, air, nitrogen, or carbon dioxide can be used as the pressurized gas.
本発明の第８の実施の形態は、第１から第７の実施の形態による爆発抑制装置において、消火剤として、粒子径５０μm以下のウォーターミストを用いたものである。本実施の形態によれば、効率よく消火を行える。 The eighth embodiment of the present invention uses water mist having a particle diameter of 50 μm or less as a fire extinguishing agent in the explosion suppression devices according to the first to seventh embodiments. According to the present embodiment, fire extinguishing can be performed efficiently.
以下本発明の一実施例による爆発抑制装置について説明する。
図１は本実施例による爆発抑制装置の構成図である。
An explosion suppression device according to an embodiment of the present invention will be described below.
FIG. 1 is a configuration diagram of an explosion suppression device according to the present embodiment.
本実施例による爆発抑制装置は、破砕機又は粉砕機を用いる処理施設に設置されて用いられる。
同爆発抑制装置は、処理施設１における爆発を検知する爆発検知ユニット１０と、処理施設１に対して消火剤を噴射する消火剤噴射ユニット２０と、消火剤噴射ユニット２０に、消火剤を補充する充填加圧ユニット３０と、制御手段４０とを備えている。
爆発検知ユニット１０は、１個または複数個の圧力監視センサ１１を有している。
圧力監視センサ１１は、爆発初期の圧力上昇を検知し、所定の圧力を検知すると、信号を制御手段４０に送る。
消火剤噴射ユニット２０は、加圧状態で消火剤を充填している消火容器２１と、消火容器２１内の消火剤を処理施設１に導く消火剤噴射管２２と、消火剤噴射管２２を開閉する噴射用電磁弁２３とを有している。
消火容器２１には、消火剤の液量を検出する液量検知センサ２４を設けている。液量検知センサ２４は、消火容器２１内の消火剤の液量を検出する。
消火容器２１の下部には消火剤としての水が充填され、また、その上部には圧縮気体が充満している。
The explosion suppression device according to the present embodiment is installed and used in a processing facility that uses a crusher or a crusher.
The explosion suppression device replenishes a fire extinguishing agent into an explosion detection unit 10 that detects an explosion in the processing facility 1, a fire extinguishing agent injection unit 20 that injects a fire extinguishing agent into the processing facility 1, and a fire extinguishing agent injection unit 20. A filling pressure unit 30 and a control means 40 are provided.
The explosion detection unit 10 has one or a plurality of pressure monitoring sensors 11.
The pressure monitoring sensor 11 detects a pressure increase at the initial stage of the explosion, and sends a signal to the control means 40 when a predetermined pressure is detected.
The fire-extinguishing agent injection unit 20 opens and closes a fire-extinguishing container 21 filled with a fire extinguishing agent in a pressurized state, a fire-extinguishing agent injection pipe 22 that guides the fire-extinguishing agent in the fire-extinguishing container 21 to the treatment facility 1, and the fire extinguishing agent injection pipe 22 And a solenoid valve 23 for injection.
The fire extinguishing container 21 is provided with a liquid amount detection sensor 24 for detecting the liquid amount of the extinguishing agent. The liquid amount detection sensor 24 detects the liquid amount of the extinguishing agent in the fire extinguishing container 21.
The lower part of the fire extinguishing container 21 is filled with water as a fire extinguishing agent, and the upper part is filled with compressed gas.
充填加圧ユニット３０は、消火容器２１に消火剤を供給する消火剤供給管３１と、消火容器２１に加圧気体を供給する加圧気体供給管３２と、消火剤供給管３１及び加圧気体供給管３２を開閉する供給用電磁弁３３と、消火剤としての水を貯水する貯水／蓄圧タンク３４と、貯水／蓄圧タンク３４を加圧するコンプレッサ３５とを有している。 The filling and pressurizing unit 30 includes a fire extinguisher supply pipe 31 that supplies a fire extinguisher to the fire extinguishing container 21, a pressurized gas supply pipe 32 that supplies a pressurized gas to the fire extinguishing container 21, a fire extinguishing agent supply pipe 31, and a pressurized gas. A supply electromagnetic valve 33 that opens and closes the supply pipe 32, a water storage / accumulation tank 34 that stores water as a fire extinguishing agent, and a compressor 35 that pressurizes the water storage / accumulation tank 34 are provided.
消火剤供給管３１は、消火容器２１と貯水／蓄圧タンク３４とを接続し、加圧気体供給管３２は、消火容器２１とコンプレッサ３５とを接続している。
供給用電磁弁３３には、三方切替バルブを用いることができる。三方切替バルブ３３の流出側配管２５に消火容器２１を接続し、三方切替バルブ３３の流入側に、消火剤供給管３１と加圧気体供給管３２とを接続している。本実施例では、三方切替バルブ３３を用いることで、流出側配管２５を、消火剤供給管３１の一部とし、また加圧気体供給管３２の一部として用いている。なお、消火剤供給管３１及び加圧気体供給管３２をそれぞれ独立した配管として消火容器２１に接続し、消火剤供給管３１及び加圧気体供給管３２にそれぞれ電磁弁を設けてもよい。
加圧気体供給管３２には加圧バルブ３６を設けている。また、三方切替バルブ３３の流入側の加圧気体供給管３２には減圧弁３７を設けている。
貯水／蓄圧タンク３４には、排気バルブ３８ａ、給水バルブ３８ｂ、圧力監視センサ３９ａ、液面上限センサ３９ｂ、及び液面下限センサ３９ｃを設けている。
コンプレッサ３５は、消火容器２１の設定圧力に応じて、低圧（０〜０．９８ＭＰａ）、中圧（０．９８〜１．４ＭＰａ）、又は高圧（１．４〜３．０ＭＰａ）のタイプからいずれかを選択することができる。
コンプレッサ３５から供給する加圧気体は、空気、窒素、二酸化炭素のいずれかまたはそれらの混合ガスを用いることができる。
The extinguishing agent supply pipe 31 connects the fire extinguishing container 21 and the water storage / accumulation tank 34, and the pressurized gas supply pipe 32 connects the fire extinguishing container 21 and the compressor 35.
As the supply electromagnetic valve 33, a three-way switching valve can be used. The fire extinguishing container 21 is connected to the outflow side piping 25 of the three-way switching valve 33, and the extinguishing agent supply pipe 31 and the pressurized gas supply pipe 32 are connected to the inflow side of the three-way switching valve 33. In the present embodiment, by using the three-way switching valve 33, the outflow side pipe 25 is used as a part of the extinguishing agent supply pipe 31 and a part of the pressurized gas supply pipe 32. Note that the extinguishing agent supply pipe 31 and the pressurized gas supply pipe 32 may be connected to the fire extinguishing container 21 as independent pipes, and the extinguishing agent supply pipe 31 and the pressurized gas supply pipe 32 may be provided with electromagnetic valves, respectively.
A pressurized valve 36 is provided in the pressurized gas supply pipe 32. In addition, a pressure reducing valve 37 is provided in the pressurized gas supply pipe 32 on the inflow side of the three-way switching valve 33.
The water storage / accumulation tank 34 is provided with an exhaust valve 38a, a water supply valve 38b, a pressure monitoring sensor 39a, a liquid level upper limit sensor 39b, and a liquid level lower limit sensor 39c.
Depending on the set pressure of the fire extinguishing container 21, the compressor 35 can be any of a low pressure (0 to 0.98 MPa), a medium pressure (0.98 to 1.4 MPa), or a high pressure (1.4 to 3.0 MPa). Can be selected.
As the pressurized gas supplied from the compressor 35, any of air, nitrogen, carbon dioxide, or a mixed gas thereof can be used.
流出側配管２５には、逆止弁２６を設けている。逆止弁２６は、流出側配管２５、消火剤供給管３１、加圧気体供給管３２、又は貯水／蓄圧タンク３４が損傷したときの加圧気体の逆流を防止し、消火容器２１の圧力を保つことができる。 A check valve 26 is provided on the outflow side pipe 25. The check valve 26 prevents the backflow of pressurized gas when the outflow side pipe 25, the extinguishing agent supply pipe 31, the pressurized gas supply pipe 32, or the water storage / accumulation tank 34 is damaged, and the pressure of the fire extinguishing container 21 is reduced. Can keep.
制御手段４０は、爆発検知ユニット１０で爆発を検知すると、噴射用電磁弁２３を開とし、所定時間の経過後に噴射用電磁弁２３を閉とし、噴射用電磁弁２３を閉とした後に、供給用電磁弁３３を開とする。
制御手段４０は、供給用電磁弁３３を開とした後、液量検知センサ２４からの信号によって供給する消火剤の液量を決定し、消火剤の液量を適正に保つとともに、消火容器２１内の気体空間を所定空間に維持する。
消火容器２１内の水位が液量検知センサ２４で検知され、液面が設定値に達したら、制御手段４０は、三方切替バルブ３３の流入側を、消火剤供給管３１から加圧気体供給管３２に切り替え、消火容器２１に気体を流して加圧する。貯水／蓄圧タンク３４の圧力は圧力監視センサ３９ａにより監視され、設定値に達したら、制御手段４０は、加圧バルブ３６を閉じ、コンプレッサ３５の運転を停止する。
When the explosion detecting unit 10 detects an explosion, the control means 40 opens the injection electromagnetic valve 23, closes the injection electromagnetic valve 23 after a predetermined time has elapsed, and closes the injection electromagnetic valve 23 before supplying it. The electromagnetic valve 33 is opened.
After the supply solenoid valve 33 is opened, the control means 40 determines the amount of the extinguishing agent to be supplied according to a signal from the liquid amount detection sensor 24, keeps the amount of the extinguishing agent proper, and keeps the fire extinguishing container 21. The gas space inside is maintained in a predetermined space.
When the water level in the fire extinguishing container 21 is detected by the liquid amount detection sensor 24 and the liquid level reaches the set value, the control means 40 moves the inflow side of the three-way switching valve 33 from the fire extinguishing agent supply pipe 31 to the pressurized gas supply pipe. It switches to 32, gas is flowed into the fire extinguishing container 21, and it pressurizes. The pressure in the water storage / accumulation tank 34 is monitored by the pressure monitoring sensor 39a, and when the set value is reached, the control means 40 closes the pressurizing valve 36 and stops the operation of the compressor 35.
圧力監視センサ３９ａにより、貯水／蓄圧タンク３４の圧力が設定値以下に低下したことを検知した場合には、制御手段４０は、コンプレッサ３５を作動させ、加圧バルブ３６を開き、圧力監視センサ３９ａが所定の圧力を検知するまで貯水／蓄圧タンク３４に圧縮空気を補充する。また、貯水／蓄圧タンク３４の水量は、液面上限センサ３９ｂと液面下限センサ３９ｃによって管理される。液面が液面下限センサ３９ｃ以下に低下すると、制御手段４０によって給水が指示される。 When the pressure monitoring sensor 39a detects that the pressure in the water storage / accumulation tank 34 has dropped below the set value, the control means 40 activates the compressor 35, opens the pressurizing valve 36, and the pressure monitoring sensor 39a. Replenishes the reservoir / accumulator tank 34 with compressed air until a predetermined pressure is detected. The amount of water in the water storage / accumulation tank 34 is managed by the liquid level upper limit sensor 39b and the liquid level lower limit sensor 39c. When the liquid level drops below the liquid level lower limit sensor 39c, water supply is instructed by the control means 40.
図２は同爆発抑制装置の動作を示すフロー図である。
爆発による圧力上昇は、圧力監視センサ１１によって検知され、検知信号を制御手段４０に送出する（ステップ１）。制御手段４０では、圧力監視センサ１１からの検知圧力値を設定値と比較する（ステップ２）。
ステップ２において、検知圧力値が設定値を超えたと判断すると、制御手段４０の指令により噴射用電磁弁２３が作動する（ステップ３）。噴射用電磁弁２３が開くことで、消火剤を高速で噴射し、火炎の伝播を阻止し爆発を抑制する。
FIG. 2 is a flowchart showing the operation of the explosion suppression device.
The pressure increase due to the explosion is detected by the pressure monitoring sensor 11, and a detection signal is sent to the control means 40 (step 1). The control means 40 compares the detected pressure value from the pressure monitoring sensor 11 with a set value (step 2).
If it is determined in step 2 that the detected pressure value has exceeded the set value, the injection solenoid valve 23 is actuated by a command from the control means 40 (step 3). By opening the injection solenoid valve 23, the fire extinguishing agent is injected at a high speed, the propagation of the flame is prevented, and the explosion is suppressed.
消火剤を放出してから一定時間（例えば３秒）経過後、制御手段４０の指令により噴射用電磁弁２３を閉じる（ステップ４）。
ステップ４における噴射用電磁弁２３の閉動作と同時又は所定時間後に、制御手段４０の指令によりコンプレッサ３５が作動する（ステップ５）。
ステップ５におけるコンプレッサ３５の作動後に、制御手段４０の指令により加圧バルブ３６を開き（ステップ６）、同時に三方切替バルブ３３を注水状態に切り替える（ステップ７）。
ステップ７では、コンプレッサ３５から供給される加圧気体は、加圧気体供給管３２から貯水／蓄圧タンク３４に導かれる。そして、貯水／蓄圧タンク３４が加圧されることで、消火剤は、貯水／蓄圧タンク３４から消火剤供給管３１、三方切替バルブ３３、及び流出側配管２５を経由して消火容器２１に供給される。
After a predetermined time (for example, 3 seconds) has elapsed since the extinguishing agent was discharged, the injection solenoid valve 23 is closed by a command from the control means 40 (step 4).
At the same time as the closing operation of the injection solenoid valve 23 in step 4 or after a predetermined time, the compressor 35 is operated by a command from the control means 40 (step 5).
After the operation of the compressor 35 in step 5, the pressurization valve 36 is opened by a command from the control means 40 (step 6), and at the same time, the three-way switching valve 33 is switched to the water injection state (step 7).
In step 7, the pressurized gas supplied from the compressor 35 is guided from the pressurized gas supply pipe 32 to the water storage / accumulation tank 34. The water storage / accumulation tank 34 is pressurized, so that the extinguishing agent is supplied from the water storage / accumulation tank 34 to the fire extinguishing container 21 via the extinguishing agent supply pipe 31, the three-way switching valve 33, and the outflow side pipe 25. Is done.
制御手段４０では、液量検知センサ２４からの検出値によって、消火容器２１内の消火剤が所定量を超えたか否かを判断する（ステップ８）。
ステップ８において、消火容器２１内の消火剤が所定量に至らない間は、三方切替バルブ３３を注水状態に維持する。
ステップ８において、消火容器２１内の消火剤が所定量を超えたと判断した場合には、制御手段４０の指令により三方切替バルブ３３を気体加圧状態に切り替える（ステップ９）。
ステップ９では、コンプレッサ３５から供給される加圧気体は、加圧気体供給管３２から、三方切替バルブ３３、及び流出側配管２５を経由して消火容器２１に供給される。なお、加圧気体供給管３２は貯水／蓄圧タンク３４とも導通状態にある。従って、消火容器２１内の圧力と貯水／蓄圧タンク３４内の圧力は同圧に保たれている。
The control means 40 determines whether or not the extinguishing agent in the fire extinguishing container 21 exceeds a predetermined amount based on the detection value from the liquid amount detection sensor 24 (step 8).
In step 8, the three-way switching valve 33 is maintained in a water injection state while the extinguishing agent in the fire extinguishing container 21 does not reach a predetermined amount.
In step 8, when it is determined that the extinguishing agent in the fire extinguishing container 21 exceeds a predetermined amount, the three-way switching valve 33 is switched to the gas pressurization state according to a command from the control means 40 (step 9).
In step 9, the pressurized gas supplied from the compressor 35 is supplied from the pressurized gas supply pipe 32 to the fire extinguishing vessel 21 via the three-way switching valve 33 and the outflow side pipe 25. Note that the pressurized gas supply pipe 32 is also in conduction with the water storage / pressure storage tank 34. Therefore, the pressure in the fire extinguishing container 21 and the pressure in the water storage / accumulation tank 34 are maintained at the same pressure.
ステップ１０において、圧力監視センサ３９ａでの検出圧力が所定値に達しない間は、三方切替バルブ３３を気体加圧状態に維持する。
ステップ１０において、圧力監視センサ３９ａでの検出圧力が所定値を超えた場合には、制御手段４０の指令により消火容器２１内の圧力が所定量を超えたと判断して加圧バルブ３６を閉じる（ステップ１１）。
そして、制御手段４０の指令によりコンプレッサ３５の作動を停止する（ステップ１２）。
なお、ステップ１２におけるコンプレッサ３５の作動停止後においても、三方切替バルブ３３は気体加圧状態としている。従って、消火剤噴射ユニット２０からの消火剤や圧縮気体の漏れにより消火容器２１の圧力が低下した場合には、貯水／蓄圧タンク３４から加圧気体が補充される。
In step 10, while the pressure detected by the pressure monitoring sensor 39a does not reach a predetermined value, the three-way switching valve 33 is maintained in the gas pressurization state.
In step 10, when the pressure detected by the pressure monitoring sensor 39a exceeds a predetermined value, it is determined that the pressure in the fire extinguishing container 21 has exceeded a predetermined amount according to a command from the control means 40, and the pressurization valve 36 is closed ( Step 11).
Then, the operation of the compressor 35 is stopped by a command from the control means 40 (step 12).
Even after the operation of the compressor 35 in step 12 is stopped, the three-way switching valve 33 is in a gas pressurization state. Therefore, when the pressure of the fire extinguishing container 21 is reduced due to the leakage of the fire extinguisher or the compressed gas from the fire extinguisher injection unit 20, the pressurized gas is replenished from the water storage / accumulation tank 34.
また、本実施例では爆発による圧力上昇を検知した場合の動作について説明したが、ステップ２における圧力監視センサ１１からの検出、ステップ８における液量検知センサ２４からの検出、及びステップ１０における圧力監視センサ３９ａでの検出を常時行うことで、消火剤噴射ユニット２０からの消火剤や圧縮気体の漏れが生じた場合であっても、常に消火剤噴射ユニット２０を動作可能な状態に維持することができる。
本実施例の爆発抑制装置によれば、水を消火剤として用いることができ、コンプレッサ３５によって消火容器２１と貯水／蓄圧タンク３４とを加圧できる。
In the present embodiment, the operation when the pressure increase due to the explosion is detected has been described. However, the detection from the pressure monitoring sensor 11 in step 2, the detection from the liquid amount detection sensor 24 in step 8, and the pressure monitoring in step 10 are performed. By always performing detection by the sensor 39a, the fire extinguisher injection unit 20 can always be maintained in an operable state even when a fire extinguisher or compressed gas leaks from the fire extinguisher injection unit 20. it can.
According to the explosion suppression device of this embodiment, water can be used as a fire extinguisher, and the fire extinguishing container 21 and the water storage / accumulation tank 34 can be pressurized by the compressor 35.
図３は本発明の他の実施例による爆発抑制装置の構成図である。上記実施例と同一機能部材には同一番号を付して説明を省略する。
本実施例による充填加圧ユニット３０Ａは、貯水／蓄圧タンク３４及びコンプレッサ３５に代えて、消火剤としての水を貯水する貯水タンク３４Ａ、圧力源である液化二酸化炭素ボンベ（圧力ボンベ）５１、及び送液ポンプ５２を有している。
液化二酸化炭素ボンベ５１は、加圧気体供給管３２に加圧気体を供給する。消火剤供給管３１は、流出側配管２５とともに消火容器２１と貯水タンク３４Ａとを接続している。送液ポンプ５２は、消火剤供給管３１に設けている。
また、本実施例による爆発抑制装置は、圧力監視センサ３９ａを流出側配管２５に設けている。
FIG. 3 is a block diagram of an explosion suppression device according to another embodiment of the present invention. The same functional members as those in the above embodiment are designated by the same reference numerals and the description thereof is omitted.
A filling and pressurizing unit 30A according to the present embodiment includes a water storage tank 34A that stores water as a fire extinguishing agent, a liquefied carbon dioxide cylinder (pressure cylinder) 51 that is a pressure source, instead of the water storage / accumulation tank 34 and the compressor 35, and A liquid feed pump 52 is provided.
The liquefied carbon dioxide cylinder 51 supplies pressurized gas to the pressurized gas supply pipe 32. The fire extinguishing agent supply pipe 31 connects the fire extinguishing container 21 and the water storage tank 34 </ b> A together with the outflow side pipe 25. The liquid feed pump 52 is provided in the fire extinguisher supply pipe 31.
Further, the explosion suppression device according to the present embodiment is provided with the pressure monitoring sensor 39 a in the outflow side pipe 25.
液化二酸化炭素ボンベ５１は、常温では５ＭＰａ以上の圧力を有する。消火容器２１の設計圧力に応じて、減圧弁５３で所定の圧力に減圧して使用する。また、液化二酸化炭素ボンベ５１はサイホン管のない一般容器を使用する。減圧弁５３は、加圧気体供給管３２に設けている。
本実施例の爆発抑制装置によれば、水を消火剤として用いることができ、液化二酸化炭素ボンベ５１によって消火容器２１を加圧できる。
The liquefied carbon dioxide cylinder 51 has a pressure of 5 MPa or more at room temperature. In accordance with the design pressure of the fire extinguishing container 21, the pressure reducing valve 53 is used to reduce the pressure to a predetermined pressure. The liquefied carbon dioxide cylinder 51 uses a general container without a siphon tube. The pressure reducing valve 53 is provided in the pressurized gas supply pipe 32.
According to the explosion suppression device of the present embodiment, water can be used as a fire extinguishing agent, and the fire extinguishing container 21 can be pressurized by the liquefied carbon dioxide cylinder 51.
図４は本発明の更に他の実施例による爆発抑制装置の構成図である。上記実施例と同一機能部材には同一番号を付して説明を省略する。
本実施例による充填加圧ユニット３０Ｂは、加圧気体供給管３２に加圧気体を供給する圧力ボンベ５１を備え、消火剤供給管３１を水道配管５４に接続している。
消火剤供給管３１には、フィルタ５５を設けている。
本実施例の爆発抑制装置によれば、水道水を消火剤として用いることができ、圧力ボンベ５１によって消火容器２１を加圧できる。
FIG. 4 is a block diagram of an explosion suppression device according to still another embodiment of the present invention. The same functional members as those in the above embodiment are designated by the same reference numerals and the description thereof is omitted.
The filling and pressurizing unit 30 </ b> B according to the present embodiment includes a pressure cylinder 51 that supplies pressurized gas to the pressurized gas supply pipe 32, and connects the extinguishing agent supply pipe 31 to the water pipe 54.
The fire extinguisher supply pipe 31 is provided with a filter 55.
According to the explosion suppression device of the present embodiment, tap water can be used as a fire extinguisher, and the fire extinguishing container 21 can be pressurized by the pressure cylinder 51.
以上のように、本発明の爆発抑制装置は、充填加圧ユニット３０、３０Ａ、３０Ｂを設けることで消火作動後、消火容器２１に消火剤を補充することができ、消火容器２１を設けることで、短時間に多量の消火剤を噴射して、効率よく消火を行い、燃焼を抑制することができる。
また、本発明の爆発抑制装置は、三方切替バルブ３３を用いることで、充填加圧ユニット３０、３０Ａ、３０Ｂから消火剤噴射ユニット２０への供給管を流出側配管２５とすることができ、三方切替バルブ３３の切り替えによって消火剤と加圧気体とを供給することができる。
As described above, the explosion suppression device of the present invention can replenish the fire extinguishing agent 21 to the fire extinguishing container 21 after the fire extinguishing operation by providing the filling and pressurizing units 30, 30 </ b> A, 30 </ b> B. In addition, a large amount of fire extinguishing agent can be injected in a short time to efficiently extinguish and suppress combustion.
Moreover, the explosion suppression device of the present invention can use the three-way switching valve 33 to make the supply pipe from the filling pressurization unit 30, 30A, 30B to the extinguishing agent injection unit 20 as the outflow side pipe 25. The extinguishing agent and the pressurized gas can be supplied by switching the switching valve 33.
本発明の爆発抑制装置に用いる消火剤は、粒子径５０μm以下のウォーターミストを用いることが好ましい。
粒子径５０μm以下のウォーターミストを空気に混入した場合に、液体燃料の消炎に必要な単位体積当たりの水重量を以下に示す。
消炎時における単位体積あたりの水重量は、ｎ−ヘプタンに対しては０．１９ｇ／Ｌ、灯油に対しては０．２３ｇ／Ｌ、エタノールに対しては０．２５ｇ／Ｌ、ジエチルエーテルに対しては０．２７ｇ／Ｌである。
一方、ｎ−ヘプタンに対して、窒素の消炎時における単位体積あたりの重量は、０．３８ｇ／Ｌ、二酸化炭素の消炎時における単位体積あたりの重量は、０．４ｇ／Ｌ、ハロン１３０１の消炎時における単位体積あたりの重量は、０．２１ｇ／Ｌである。
従って、消火剤として粒子径５０μm以下のウォーターミストを用いることで、窒素、二酸化炭素、及びハロン１３０１と単位体積あたりの重量で比較しても優れた効果を期待できる。
The fire extinguisher used in the explosion suppression device of the present invention is preferably water mist having a particle diameter of 50 μm or less.
The water weight per unit volume necessary for extinguishing the liquid fuel when water mist with a particle size of 50 μm or less is mixed in the air is shown below.
The water weight per unit volume at the time of extinction is 0.19 g / L for n-heptane, 0.23 g / L for kerosene, 0.25 g / L for ethanol, and for diethyl ether. Is 0.27 g / L.
On the other hand, with respect to n-heptane, the weight per unit volume when nitrogen is extinguished is 0.38 g / L, the weight per unit volume when carbon dioxide is extinguished is 0.4 g / L, and the extinction of halon 1301 The weight per unit volume at the time is 0.21 g / L.
Therefore, by using water mist having a particle diameter of 50 μm or less as a fire extinguisher, excellent effects can be expected even when compared with nitrogen, carbon dioxide, and halon 1301 in terms of weight per unit volume.
本発明は、特に資源再生や廃棄物処理のような破砕プラントに適している。 The present invention is particularly suitable for crushing plants such as resource recycling and waste disposal.
１ 処理施設
１０ 爆発検知ユニット
２０ 消火剤噴射ユニット
２１ 消火容器
２２ 消火剤噴射管
２３ 噴射用電磁弁
２４ 液量検知センサ
３０ 充填加圧ユニット
３０Ａ 充填加圧ユニット
３０Ｂ 充填加圧ユニット
３１ 消火剤供給管
３２ 加圧気体供給管
３３ 供給用電磁弁（三方切替バルブ）
３４ 貯水／蓄圧タンク
３４Ａ 貯水タンク
３５ コンプレッサ
４０ 制御手段
５１ 液化二酸化炭素ボンベ（圧力ボンベ）
５２ 送液ポンプ
５４ 水道配管
DESCRIPTION OF SYMBOLS 1 Processing facility 10 Explosion detection unit 20 Extinguishing agent injection unit 21 Fire extinguishing container 22 Extinguishing agent injection pipe 23 Electromagnetic valve for injection 24 Liquid quantity detection sensor 30 Filling pressurization unit 30A Filling pressurization unit 30B Filling pressurization unit 31 Extinguishing agent supply pipe 32 Pressurized gas supply pipe 33 Supply solenoid valve (3-way switching valve)
34 water storage / accumulation tank 34A water storage tank 35 compressor 40 control means 51 liquefied carbon dioxide cylinder (pressure cylinder)
52 Liquid feed pump 54 Water supply piping
Claims (8)
前記処理施設における爆発を検知する爆発検知ユニットと、
前記処理施設に対して消火剤を噴射する消火剤噴射ユニットと、
前記消化剤噴射ユニットに、前記消火剤を補充する充填加圧ユニットと、
を備え、
前記消火剤噴射ユニットは、
加圧状態で前記消火剤を充填している消火容器と、
前記消火容器内の前記消火剤を前記処理施設に導く消火剤噴射管と、
前記消火剤噴射管を開閉する噴射用電磁弁と、
を有し、
前記充填加圧ユニットは、
前記消火容器に前記消火剤を供給する消火剤供給管と、
前記消火容器に加圧気体を供給する加圧気体供給管と、
前記消火剤供給管及び前記加圧気体供給管を開閉する供給用電磁弁と、
を有し、
前記爆発検知ユニットで爆発を検知すると、前記噴射用電磁弁を開とし、
所定時間の経過後に前記噴射用電磁弁を閉とし、
前記噴射用電磁弁を閉とした後に、前記供給用電磁弁を開とする制御手段を有することを特徴とする爆発抑制装置。 An explosion suppression device installed in a processing facility using a crusher or a crusher,
An explosion detection unit for detecting an explosion in the treatment facility;
A fire extinguishing agent injection unit for injecting a fire extinguishing agent to the treatment facility;
A filling pressure unit for replenishing the extinguishing agent to the digestive agent injection unit;
With
The fire extinguishing agent injection unit is
A fire extinguisher filled with the extinguishing agent in a pressurized state; and
A fire-extinguishing agent injection pipe for guiding the fire-extinguishing agent in the fire-extinguishing container to the treatment facility;
A solenoid valve for injection that opens and closes the extinguishing agent injection pipe;
Have
The filling pressure unit is
A fire extinguishing agent supply pipe for supplying the fire extinguishing agent to the fire extinguishing container;
A pressurized gas supply pipe for supplying pressurized gas to the fire extinguishing container;
A supply solenoid valve for opening and closing the extinguishing agent supply pipe and the pressurized gas supply pipe;
Have
When an explosion is detected by the explosion detection unit, the solenoid valve for injection is opened,
After the elapse of a predetermined time, the injection solenoid valve is closed,
An explosion suppression device comprising control means for opening the supply solenoid valve after closing the injection solenoid valve.
前記消火剤としての水を貯水する貯水／蓄圧タンクと、
前記貯水／蓄圧タンクを加圧するコンプレッサと、
を備え、
前記消火剤供給管は、前記消火容器と前記貯水／蓄圧タンクとを接続し、
前記加圧気体供給管は、前記消火容器と前記コンプレッサとを接続する
ことを特徴とする請求項１に記載の爆発抑制装置。 The filling pressure unit is
A water storage / accumulation tank for storing water as the fire extinguishing agent;
A compressor for pressurizing the water storage / accumulation tank;
With
The fire extinguishing agent supply pipe connects the fire extinguishing container and the water storage / accumulation tank,
The explosion suppression device according to claim 1, wherein the pressurized gas supply pipe connects the fire-extinguishing container and the compressor.
前記消火剤としての水を貯水する貯水タンクと、
前記加圧気体供給管に前記加圧気体を供給する圧力ボンベと、
を備え、
前記消火剤供給管は、前記消火容器と前記貯水タンクとを接続し、
前記消火剤供給管に送液ポンプを設けた
ことを特徴とする請求項１に記載の爆発抑制装置。 The filling pressure unit is
A water storage tank for storing water as the fire extinguishing agent;
A pressure cylinder for supplying the pressurized gas to the pressurized gas supply pipe;
With
The fire extinguishing agent supply pipe connects the fire extinguishing container and the water storage tank,
The explosion suppressing device according to claim 1, wherein a liquid feed pump is provided in the fire extinguisher supply pipe.
前記加圧気体供給管に前記加圧気体を供給する圧力ボンベ
を備え、
前記消火剤供給管を水道配管に接続した
ことを特徴とする請求項１に記載の爆発抑制装置。 The filling pressure unit is
A pressure cylinder for supplying the pressurized gas to the pressurized gas supply pipe;
The explosion suppressing device according to claim 1, wherein the extinguishing agent supply pipe is connected to a water pipe.
前記制御手段は、前記液量検知センサからの信号によって供給する前記消火剤の前記液量を決定し、前記消火容器内の気体空間を所定空間に維持する
ことを特徴とする請求項１から請求項４に記載の爆発抑制装置。 The fire extinguishing container is provided with a liquid amount detection sensor for detecting the liquid amount of the fire extinguishing agent,
The said control means determines the said liquid quantity of the said extinguishing agent supplied with the signal from the said liquid quantity detection sensor, The gas space in the said fire extinguishing container is maintained in predetermined space, The Claim 1 characterized by the above-mentioned. Item 5. The explosion suppression device according to Item 4.
前記三方切替バルブの流出側に前記消火容器を接続し、
前記三方切替バルブの流入側に、前記消火剤供給管と前記加圧気体供給管とを接続した
ことを特徴とする請求項１から請求項５に記載の爆発抑制装置。 Using a three-way switching valve as the supply solenoid valve,
Connecting the fire-extinguishing container to the outflow side of the three-way switching valve;
The explosion suppressing device according to any one of claims 1 to 5, wherein the extinguishing agent supply pipe and the pressurized gas supply pipe are connected to an inflow side of the three-way switching valve.
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