JP3096658B2 - Decompression device for fire extinguishing equipment - Google Patents
Decompression device for fire extinguishing equipmentInfo
- Publication number
- JP3096658B2 JP3096658B2 JP09154433A JP15443397A JP3096658B2 JP 3096658 B2 JP3096658 B2 JP 3096658B2 JP 09154433 A JP09154433 A JP 09154433A JP 15443397 A JP15443397 A JP 15443397A JP 3096658 B2 JP3096658 B2 JP 3096658B2
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- Prior art keywords
- pressure
- gas
- fire extinguishing
- valve
- constant
- Prior art date
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、消火剤貯蔵容器内
にガス状態で貯蔵されている消火剤を消火対象区画内に
放出し、消火対象区画内の消火剤の濃度を消炎濃度以上
に維持することによって消火するようにした消火設備に
用いられる減圧装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention discharges a fire extinguishing agent stored in a gaseous state in a fire extinguishing agent storage container into a fire extinguishing target compartment, and maintains the concentration of the fire extinguishing agent in the fire extinguishing target compartment equal to or higher than the flame-extinguishing concentration. The present invention relates to a decompression device used for fire extinguishing equipment that extinguishes a fire by performing a fire extinguishing operation.
【０００２】[0002]
【従来の技術】従来、消火対象区画内に消火剤を放出
し、消火対象区画内の消火剤の濃度を消炎濃度以上に維
持することによって消火するようにした消火設備とし
て、消火剤に二酸化炭素やハロンガス等の不活性ガスを
使用するようにしたものが実用化されている。2. Description of the Related Art Conventionally, as a fire extinguishing system, a fire extinguishing agent is discharged into a fire extinguishing target compartment, and the concentration of the fire extinguishing agent in the fire extinguishing target is maintained at a level higher than the flame-extinguishing concentration. The use of an inert gas such as gas or halon gas has been put to practical use.
【０００３】ところで、消火剤として二酸化炭素やハロ
ンガス等の不活性ガスを使用する場合、これらの消火剤
を加圧液化して高圧ガス容器からなる消火剤貯蔵容器に
充填された状態で消火設備内に保管しておき、火災の際
に、適宜の電気的手段又は空圧的手段を用いて、消火剤
貯蔵容器の容器弁を開放することにより、二酸化炭素や
ハロンガスを消火剤貯蔵容器から配管を介して噴射ヘッ
ドまで送り、噴射ヘッドから消火対象区画内に放出する
ようにしている。このとき、二酸化炭素やハロンガス等
の不活性ガスは、噴射ヘッドまでは液体の状態で送ら
れ、噴射ヘッドから消火対象区画内に放出された瞬間に
気化して気体の状態となり、消火対象区画内に充満して
火災を鎮圧する。When an inert gas such as carbon dioxide or halon gas is used as a fire extinguishing agent, these extinguishants are liquefied under pressure and filled in a fire extinguisher storage container composed of a high-pressure gas container, and then the fire extinguishing equipment is used. In the event of a fire, use appropriate electrical or pneumatic means to open the container valve of the fire extinguisher storage container to remove carbon dioxide and halon gas from the fire extinguisher storage container. Through the jet head, and discharges the jet head into the fire extinguishing target compartment. At this time, the inert gas such as carbon dioxide and halon gas is sent in a liquid state to the ejection head, and is vaporized at the moment when the gas is released from the ejection head into the fire extinguishing section, and becomes a gaseous state. To suppress the fire.
【０００４】そして、これらの二酸化炭素やハロンガス
等の不活性ガスを使用するガス系消火設備は、急速に火
災を鎮圧できること、消火剤による消火対象区画内の汚
染がほとんどないこと、電気の絶縁性を損なわないこ
と、消火剤が隙間から浸透して構造が複雑な消火対象に
対しても強力な消火効果を発揮できること、消火剤の経
年変化がなく長期に亘って一定の消火能力を有すること
等の利点を有することから、石油関連施設、電気関連施
設のみならず、一般の施設にも広く使用されている。A gas fire extinguishing system using an inert gas such as carbon dioxide or halon gas is capable of rapidly suppressing a fire, hardly contaminating a fire extinguishing agent with a fire extinguishing agent, and having an electrical insulating property. That the fire extinguishing agent can penetrate through gaps and exert a strong fire-extinguishing effect even on fire-extinguishing objects with a complicated structure, and that the fire extinguishing agent has a constant fire-extinguishing ability over a long period without aging. It is widely used not only in petroleum-related facilities and electrical facilities, but also in general facilities.
【０００５】ところが、近年になって、オゾン層の破壊
に関する問題が世界的な規模で提起され、ハロンガス等
のハロゲン化炭化水素成分を含有する消火剤について
は、１９９４年１月に生産中止となり、事実上使用する
ことができなくなった。これにより、アルゴン等の高価
な希ガスを使用する特殊な消火設備を除くと、現在、ガ
ス系消火設備において使用されている消火剤は、二酸化
炭素のみであるということができる。However, in recent years, a problem relating to destruction of the ozone layer has been raised on a worldwide scale, and production of fire extinguishing agents containing halogenated hydrocarbon components such as halon gas was discontinued in January 1994. It is virtually unusable. Accordingly, excluding special fire extinguishing equipment using expensive rare gas such as argon, it can be said that the fire extinguishing agent currently used in gas fire extinguishing equipment is only carbon dioxide.
【０００６】一方、この二酸化炭素を消火剤として使用
する消火設備についても、以下の問題点があることが知
られている。 (1) 消火時の消火対象区画内の二酸化炭素の設計濃度
は、約３５％であり、この濃度では、万一消火対象区画
内に人が存在していた場合、二酸化炭素の毒性（麻酔
性）により人命に係わる事態が発生するおそれがある。 (2) 二酸化炭素は、火災の際、噴射ヘッドまでは液体の
状態で送られ、噴射ヘッドから消火対象区画内に放出さ
れた瞬間に気化して気体の状態となるが、このとき、周
囲から気化熱を奪うため室内の空気の飽和蒸気圧が低下
し、空気中の水分が結露するとともに、静電気が発生す
る。これにより、室内は霧がかかった状態となり、人の
避難及び救出並びに消火作業の障害になるとともに、結
露及び静電気により電子機器の絶縁不良や故障が起こ
り、重大な二次災害が発生するおそれがある。 (3) 二酸化炭素は、密度が空気よりもはるかに大きいた
め、消火対象区画内に放出された二酸化炭素は、消火対
象区画内の下部に滞留し消火効果が低下するほか、消火
対象区画内の下部の開口部から外部へ散逸しやすい。 (4) 地球温暖化に関する問題が世界的な規模で提起され
ていることから、二酸化炭素もハロンガスと同様に、将
来的には使用が制限される可能性がある。[0006] On the other hand, fire extinguishing equipment using carbon dioxide as a fire extinguishing agent is also known to have the following problems. (1) The design concentration of carbon dioxide in the fire extinguishing target compartment at the time of fire extinguishing is about 35%. At this concentration, if there is a person in the fire extinguishing target compartment, the toxicity of carbon dioxide (narcotic ) May cause a situation involving human life. (2) In the event of a fire, carbon dioxide is sent to the injection head in a liquid state, and when it is released from the injection head into the fire extinguishing target compartment, it evaporates to a gaseous state. Saturated vapor pressure of the indoor air decreases due to deprivation of heat of vaporization, moisture in the air condenses, and static electricity is generated. As a result, the interior of the room is in a fog condition, which may hinder the evacuation and rescue of people and fire extinguishing work, and may cause insulation failure or breakdown of electronic devices due to condensation and static electricity, which may cause a serious secondary disaster. is there. (3) Since carbon dioxide has a much higher density than air, the carbon dioxide released into the fire extinguishing compartment stays in the lower part of the fire extinguishing compartment and the fire extinguishing effect is reduced. It is easy to dissipate outside through the lower opening. (4) As the issue of global warming is raised on a global scale, the use of carbon dioxide may be restricted in the future, as with halon gas.
【０００７】[0007]
【発明が解決しようとする課題】ところで、本件出願人
は、上記従来の消火設備が有する多くの問題点を解決す
るために、先に窒素ガスや窒素ガスに、オゾン層を破壊
しないパーフルオロアルカン（パーフルオロブタン（Ｃ
4Ｆ10））、ハイドロジェノフルオロアルカン（トリフ
ルオロメタン（ＣＨＦ3）、へプタフルオロプロパン
（Ｃ3ＨＦ7）又はペンタフルオロエタン（Ｃ2ＨＦ5））
又はハイドロジェノフルオロハロゲノアルカン（アイオ
ドトリフルオロメタン（ＣＦ3Ｉ））（以下、これらを
総称して「フッ素系化合物」という。）の少なくとも１
種類を１０容積％以下の割合で混合した混合ガス（以下
単に「混合ガス」という。）を消火剤として使用する消
火設備を提案した。In order to solve many of the problems of the above-mentioned conventional fire extinguishing equipment, the applicant of the present invention firstly added a perfluoroalkane which did not destroy the ozone layer to nitrogen gas or nitrogen gas. (Perfluorobutane (C
4F10)), hydrogenofluoroalkane (trifluoromethane (CHF3), heptafluoropropane (C3HF7) or pentafluoroethane (C2HF5))
Alternatively, at least one of hydrogenofluorohalogenoalkane (iodotrifluoromethane (CF3I)) (hereinafter, these are collectively referred to as "fluorinated compounds").
A fire extinguishing system using a mixed gas (hereinafter, simply referred to as "mixed gas") in which the types are mixed at a ratio of 10% by volume or less has been proposed.
【０００８】しかしながら、消火剤として窒素ガスや混
合ガスを使用した場合も、以下の問題点があることがわ
かった。 (1) 窒素ガスや混合ガスは、加圧してガス状態で貯蔵さ
れたものを使用するため、加圧液化した状態で貯蔵され
たものを使用する二酸化炭素やハロンガスに比べて、同
容積の消火対象区画の消火に要する消火剤貯蔵容器の数
が数倍必要となり、消火剤貯蔵容器の大きな設置スペー
スが必要となる。 (2) 設置する消火剤貯蔵容器の数を低減するためには、
消火剤貯蔵容器に充填する消火剤の充填圧力を高める必
要があるが、消火剤の充填圧力を高めた場合、選択弁、
主配管、枝管、噴射ヘッド等の消火設備の二次側機器に
も消火剤の高いガス圧がかかることとなり、このため、
これら二次側機器の耐圧グレードを上げる必要があり、
設備の構築コストが著しく上昇し、また、既存の設備に
は適用できないという問題があった。However, it has been found that the use of a nitrogen gas or a mixed gas as a fire extinguishing agent also has the following problems. (1) Since nitrogen gas and mixed gas are stored in gaseous state under pressure, fire extinguishing with the same volume compared to carbon dioxide and halon gas, which are stored in pressurized and liquefied state. The number of fire extinguisher storage containers required for extinguishing the target compartment is several times larger, and a large installation space for the fire extinguisher storage containers is required. (2) In order to reduce the number of fire extinguisher storage containers to be installed,
It is necessary to increase the filling pressure of the extinguishing agent to be charged in the extinguishing agent storage container, but if the filling pressure of the extinguishing agent is increased, the selection valve,
High gas pressure of the fire extinguisher will also be applied to the secondary equipment of the fire extinguishing equipment such as the main piping, branch pipes, injection heads, etc.,
It is necessary to raise the pressure resistance grade of these secondary devices,
There has been a problem that the construction cost of the equipment has risen remarkably and that it cannot be applied to existing equipment.
【０００９】これに対処するため、本件出願人は、先
に、消火剤として窒素ガスや混合ガス等の消火剤貯蔵容
器内にガス状態で貯蔵される消火剤を使用する消火設備
の有する問題点を解決し、消火設備の二次側機器の耐圧
グレードを上げることなく消火剤の充填圧力を高めるこ
とができる制圧弁を使用した消火設備用減圧装置を提案
した（特願平７ー１３８６３１号（特開平８ー２９９４
９２号）、特願平８ー１６１１３７号、特願平９ー１１
３４９３号参照）。In order to cope with this problem, the applicant of the present application has previously proposed a problem with a fire extinguishing system using a fire extinguishing agent that is stored in a gaseous state in a fire extinguishing agent storage container such as a nitrogen gas or a mixed gas. And proposed a pressure-reducing device for fire-extinguishing equipment using a pressure-control valve that can increase the filling pressure of the fire-extinguishing agent without increasing the pressure-resistant grade of the secondary-side equipment of the fire-extinguishing equipment (Japanese Patent Application No. Hei 7-138631). JP-A-8-2994
No. 92), Japanese Patent Application No. 8-161137, Japanese Patent Application No. 9-11
No. 3493).
【００１０】この制圧弁を使用した消火設備用減圧装置
は、制圧弁の放出側の消火剤のガス圧を定圧ガス源のガ
ス圧によって規制することができ、消火剤貯蔵容器に対
する消火剤の充填圧力が高い場合にも、消火設備の二次
側機器に消火剤の高いガス圧がかかることを防止するこ
とができ、上記の所期の目的を達成するものであった。In the pressure reducing device for a fire extinguisher using the pressure suppression valve, the gas pressure of the fire extinguishing agent on the discharge side of the pressure suppression valve can be regulated by the gas pressure of the constant pressure gas source, and the fire extinguishing agent storage container is filled with the fire extinguishing agent. Even when the pressure is high, it is possible to prevent a high gas pressure of the fire extinguishing agent from being applied to the secondary device of the fire extinguishing equipment, thereby achieving the above-mentioned intended purpose.
【００１１】ところで、この消火設備用減圧装置が適用
可能な消火設備は、二酸化炭素を消火剤として使用して
いた消火設備（最高使用圧力１１０Kgf／cm2）のような
一般的な消火設備から、常に内部を負圧に状態に保持す
る必要のある原子力関連設備（最高使用圧力１０Kgf／c
m2）のような特殊な消火設備まで、きわめて広い範囲に
及ぶことから、消火設備用減圧装置の制圧弁の放出側の
消火剤のガス圧の調整を広範囲に行うことができるよう
にする必要がある。制圧弁の放出側の消火剤のガス圧の
調整は、定圧ガス源のガス圧を変更したり、制圧弁の形
状を変更すること等によって行うことができるが、これ
らの方法は、いずれも、多くの種類の定圧ガス源や制圧
弁を用意する必要があることから、消火設備の構築コス
トや保守コストが上昇するという問題点を有していた。By the way, fire extinguishing equipment to which this decompression device for fire extinguishing equipment can be applied includes general fire extinguishing equipment such as fire extinguishing equipment (maximum operating pressure 110 kgf / cm 2 ) using carbon dioxide as a fire extinguishing agent. Nuclear-related equipment that always needs to maintain a negative pressure inside (maximum operating pressure 10Kgf / c)
m 2 )), it is necessary to make it possible to adjust the gas pressure of the extinguishing agent on the discharge side of the control valve of the decompression system for fire extinguishing equipment over a very wide range. There is. Adjustment of the gas pressure of the fire extinguishing agent on the discharge side of the suppression valve can be performed by changing the gas pressure of the constant pressure gas source, changing the shape of the suppression valve, etc. Since it is necessary to prepare many types of constant pressure gas sources and control valves, there is a problem that construction costs and maintenance costs of fire extinguishing equipment increase.
【００１２】本発明は、本件出願人が先に提案した、消
火剤貯蔵容器内にガス状態で貯蔵されている消火剤を消
火対象区画内に放出し、消火対象区画内の消火剤の濃度
を消炎濃度以上に維持することによって消火するように
した消火設備の消火剤の流路に、放出側の消火剤のガス
圧を定圧ガス源のガス圧によって規制するようにした制
圧弁を配設するようにした消火設備用減圧装置におい
て、制圧弁の放出側の消火剤のガス圧の調整を、簡易な
機構でもって、かつ高精度に行うことができる消火設備
用減圧装置を提供することを目的とする。According to the present invention, a fire extinguisher stored in a gaseous state in a fire extinguishing agent storage container, which has been previously proposed by the present applicant, is discharged into a fire extinguishing target compartment, and the concentration of the fire extinguishing agent in the fire extinguishing target compartment is reduced. In the fire extinguisher flow path of the fire extinguishing equipment, which is designed to extinguish the fire by maintaining the fire extinguishing concentration or higher, a control valve is provided which regulates the gas pressure of the fire extinguishing agent on the discharge side by the gas pressure of the constant pressure gas source. An object of the present invention is to provide a pressure-reducing device for a fire extinguisher that can adjust the gas pressure of a fire-extinguishing agent on the discharge side of a suppression valve with a simple mechanism and with high accuracy. And
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するた
め、本発明の消火設備用減圧装置は、消火剤貯蔵容器内
にガス状態で貯蔵されている消火剤を消火対象区画内に
放出し、消火対象区画内の消火剤の濃度を消炎濃度以上
に維持することによって消火するようにした消火設備の
消火剤の流路に、放出側の消火剤のガス圧を定圧ガス源
のガス圧によって規制するようにした制圧弁を配設する
ようにした消火設備用減圧装置において、制圧弁の出口
側圧力が設定ガス圧以上になった場合に、定圧ガス源か
ら制圧弁へ定圧ガスを供給する定圧ガス供給路に、該定
圧ガス供給路を遮断する定圧ガス遮断弁と、定圧ガス供
給路内のガスを放出し、制圧弁にかかるガス圧を低下さ
せる排気弁とを配設したことを特徴とする。In order to achieve the above object, a pressure reducing device for fire extinguishing equipment according to the present invention discharges a fire extinguishing agent stored in a gaseous state in a fire extinguishing agent storage container into a fire extinguishing target compartment, The gas pressure of the extinguishing agent on the discharge side is regulated by the gas pressure of the constant-pressure gas source in the flow path of the extinguishing agent in the fire extinguishing equipment, which is designed to extinguish the fire by maintaining the concentration of the extinguishing agent in the fire extinguishing section above the flame-extinguishing concentration In a pressure reducing device for fire extinguishing equipment, a constant pressure gas is supplied from the constant pressure gas source to the pressure reducing valve when the pressure on the outlet side of the pressure reducing valve exceeds a set gas pressure. In the gas supply path, a constant-pressure gas shut-off valve for shutting off the constant-pressure gas supply path, and an exhaust valve for discharging gas in the constant-pressure gas supply path and reducing the gas pressure applied to the control valve are provided. I do.
【００１４】この消火設備用減圧装置は、制圧弁の出口
側圧力が設定ガス圧以上になった場合に、定圧ガス源か
ら制圧弁へ定圧ガスを供給する定圧ガス供給路に配設し
た定圧ガス遮断弁によって、定圧ガス供給路を遮断し、
定圧ガス源から制圧弁へ定圧ガスが供給されることを停
止するとともに、制圧弁の特性から定圧ガス供給路を遮
断しても出口側圧力が上昇する傾向があるため、必要に
応じて、排気弁を開放することによって、定圧ガス供給
路内のガスの一部を放出して、制圧弁にかかるガス圧を
低下させ、制圧弁の出口側圧力を設定ガス圧以下に保持
するようにする。これにより、１種類の定圧ガス源及び
制圧弁を用いて放出側の消火剤のガス圧を広範囲に調整
することができ、消火設備の構築コスト及び保守コスト
を低廉にすることができる。また、消火剤の充填圧力が
高い場合にも、消火設備の二次側機器に消火剤の高いガ
ス圧がかかることがなく、さらに、消火剤貯蔵容器内の
消火剤の圧力が、設定ガス圧以下に低下するまでは、制
圧弁の放出側の消火剤のガス圧が設定ガス圧に保持され
るため、消火剤の放出により消火剤貯蔵容器内の消火剤
の圧力が低下した場合でも、消火剤の放出量を一定に保
つことができる。[0014] The pressure reducing device for a fire extinguishing system is provided with a constant pressure gas supply passage provided in a constant pressure gas supply path for supplying a constant pressure gas from a constant pressure gas source to the pressure suppression valve when the pressure on the outlet side of the pressure suppression valve becomes higher than a set gas pressure. The shutoff valve shuts off the constant pressure gas supply path,
The supply of constant-pressure gas from the constant-pressure gas source to the control valve is stopped, and the pressure on the outlet side tends to increase even if the constant-pressure gas supply path is cut off due to the characteristics of the control valve. By opening the valve, a part of the gas in the constant pressure gas supply path is released, the gas pressure applied to the pressure control valve is reduced, and the pressure on the outlet side of the pressure control valve is maintained at or below the set gas pressure. Thereby, the gas pressure of the fire extinguishing agent on the discharge side can be adjusted over a wide range using one kind of constant pressure gas source and the control valve, and the construction cost and maintenance cost of the fire extinguishing equipment can be reduced. In addition, even when the filling pressure of the extinguishing agent is high, the gas pressure of the extinguishing agent is not applied to the secondary equipment of the fire extinguishing equipment, and the pressure of the extinguishing agent in the extinguishing agent storage container is reduced to the set gas pressure. Until the pressure drops below, the gas pressure of the fire extinguishing agent on the discharge side of the suppression valve is maintained at the set gas pressure. The release amount of the agent can be kept constant.
【００１５】[0015]
【発明の実施の形態】以下、本発明の消火設備用減圧装
置の実施の形態を図面に基づいて説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a decompression apparatus for fire extinguishing equipment according to the present invention.
【００１６】図１に、本発明の消火設備用減圧装置を適
用する消火設備の一例を示す。この消火設備は、３つの
消火対象区画６−１，６−２，６−３を有する場合の不
活性ガス消火設備を示したものである。この消火設備
は、消火剤として、例えば、窒素ガスを使用し、これを
加圧して高圧ガス容器に充填した状態（３５℃におい
て、１８０Kgf／cm2）で消火設備内に保管することによ
り、消火剤貯蔵容器１として利用する。消火設備には、
５本の消火剤貯蔵容器１−１，１−２，・・・１−５を
備え、各容器１には、容器弁２を介して連結管３を接続
し、さらに連結管３を１本の集合管４に接続し、この集
合管４を各消火対象区画６−１，６−２，６−３まで延
設した主配管５−１，５−２，５−３に接続する。主配
管５−１，５−２，５−３には、選択弁９−１，９−
２，９−３を配設し、消火対象区画６−１，６−２，６
−３に選択的に消火剤を送るようにする。消火対象区画
６−１，６−２，６−３まで延設した主配管５−１，５
−２，５−３を、消火対象区画６−１，６−２，６−３
内にそれぞれ配設した枝管８−１，８−２，８−３に接
続し、この枝管８−１，８−２，８−３を消火対象区画
６−１，６−２，６−３内の適所に複数個配設した噴射
ヘッド７−１，７−２，７−３に接続する。FIG. 1 shows an example of a fire extinguishing system to which the pressure reducing device for a fire extinguishing system of the present invention is applied. This fire extinguishing system shows an inert gas fire extinguishing system in the case of having three fire extinguishing target sections 6-1, 6-2, and 6-3. This fire-extinguishing equipment uses, for example, nitrogen gas as a fire-extinguishing agent and pressurizes it and stores it in a fire-extinguishing facility in a state where it is filled in a high-pressure gas container (180 kgf / cm 2 at 35 ° C.). It is used as the agent storage container 1. Fire fighting equipment
Each of the containers 1 is connected to a connecting pipe 3 via a container valve 2, and one connecting pipe 3 is further provided. And the main pipes 5-1, 5-2, 5-3 extending to the respective fire extinguishing target sections 6-1, 6-2, 6-3. The main piping 5-1, 5-2, 5-3 has a selection valve 9-1, 9-
The fire extinguishing sections 6-1, 6-2 and 6
Selectively send fire extinguisher to -3. Main pipes 5-1 and 5 extending to fire extinguishing target sections 6-1, 6-2 and 6-3
The fire extinguishing target sections 6-1, 6-2, 6-3
Are connected to branch pipes 8-1, 8-2, 8-3, respectively, and these branch pipes 8-1, 8-2, 8-3 are connected to fire extinguishing sections 6-1, 6-2, 6. -3, 3-2, and 7-3.
【００１７】ところで、通常、各消火対象区画６−１，
６−２，６−３は、その容積が異なるため、当然、消火
するのに必要となる消火剤の量も異なる。このため、主
配管５−１，５−２，５−３の口径を各消火対象区画６
−１，６−２，６−３の容積に応じて異ならせるほか、
火災の際、消火対象となる消火対象区画６−１，６−
２，６−３に対応した本数の消火剤貯蔵容器１が開放さ
れるように不活性ガス消火設備を構成する。In general, each fire extinguishing target section 6-1
Since 6-2 and 6-3 have different volumes, the amount of fire extinguisher required to extinguish the fire also differs. For this reason, the diameter of the main pipes 5-1, 5-2, 5-3 is set to each fire extinguishing target section 6
-1, 6-2, 6-3
In case of fire, fire extinguishing target sections 6-1 and 6-
The inert gas fire extinguishing equipment is configured so that the number of fire extinguisher storage containers 1 corresponding to 2, 6-3 is opened.
【００１８】ここで、開放すべき消火剤貯蔵容器１の本
数を、消火対象区画６−１が５本、消火対象区画６−２
が３本、消火対象区画６−３が１本に設定することとす
る。なお、図中、９−１，９−２，９−３は選択弁、１
０−１，１０−２，１０−３は選択弁開放装置、１１−
１，１１−２，１１−３は起動用ガス容器、１２−１，
１２−２，１２−３は起動用ガス容器開放用のソレノイ
ドである。また、図中、１３−１，１３−２，１３−３
は、選択弁９−１，９−２，９−３及び起動用ガス容器
１１−１，１１−２，１１−３の開放をコントロールす
る起動用ガス管路で、選択弁開放装置１０−１，１０−
２，１０−３に接続され、その途中の適所に不還弁１４
−１，１４−２，１４−３，１４−Ａ，１４−Ｂを配設
する。なお、不還弁１４−１，１４−２，１４−３，１
４−Ａ，１４−Ｂの通過可能方向は、図の矢印の向きで
表している。なお、これらの部材の末尾の数字１，２，
３は、消火対象区画の末尾の数字１，２，３にそれぞれ
対応している。Here, the number of fire extinguisher storage containers 1 to be opened is determined by the number of fire extinguisher compartments 6-1 and five fire extinguisher compartments 6-2.
Are set to three, and the fire extinguishing target section 6-3 is set to one. In the figure, 9-1, 9-2, 9-3 are selection valves, 1
0-1, 10-2, 10-3 are selective valve opening devices, 11-
1, 11-2 and 11-3 are starting gas containers, and 12-1 and 12-1.
Reference numerals 12-2 and 12-3 denote solenoids for opening the starting gas container. Also, in the figure, 13-1, 13-2, 13-3
Is a starting gas pipeline for controlling the opening of the selection valves 9-1, 9-2, 9-3 and the starting gas containers 11-1, 11-2, 11-3. , 10-
2, 10-3, and a non-return valve 14
-1, 14-2, 14-3, 14-A and 14-B are provided. The non-return valves 14-1, 14-2, 14-3, 1
The directions in which 4-A and 14-B can pass are indicated by the directions of arrows in the figure. In addition, the numbers 1, 2, 2 at the end of these members
3 corresponds to the numbers 1, 2, and 3 at the end of the fire extinguishing target section, respectively.
【００１９】この場合において、容器弁２には、図２に
示す、容器弁２の放出側のガス消火剤のガス圧Ｐ2を定
圧ガス源のガス圧Ｐ1によって規制される制圧弁を用い
る。この制圧弁は、消火剤の流路２１に設けた３本のガ
イド部材２２ａを有する流路弁２２と、消火剤の流路２
１を閉鎖する方向に流路弁２２を付勢するばね２３と、
定圧ガス源（本実施例の場合は、定圧ガス源として、窒
素ガスを充填（３５℃において、１３０Kgf／cm2）した
起動用ガス容器１１−１，１１−２，１１−３を利用す
るようにしている。）からのガス供給口２４と、一端を
ガス供給口２４に、他端を消火剤の流路２１の放出側に
接続したシリンダ２５内に配設したピストン２６と、消
火剤の流路２１を開放する方向に流路弁２２を操作する
ピストン２６の端部に形成した操作棒２７と、流路弁２
２とは逆方向にピストン２６を付勢するばね２８とから
構成したものである。In this case, as the container valve 2, a pressure control valve shown in FIG. 2 in which the gas pressure P2 of the gas fire extinguishing agent on the discharge side of the container valve 2 is regulated by the gas pressure P1 of the constant pressure gas source is used. The pressure suppression valve includes a flow path valve 22 having three guide members 22a provided in a flow path 21 for the fire extinguishing agent, and a flow path valve 2 for the fire extinguishing agent.
A spring 23 for urging the flow valve 22 in a direction to close the valve 1;
A constant-pressure gas source (in the case of the present embodiment, the starting gas containers 11-1, 11-2, and 11-3 filled with nitrogen gas (130 kgf / cm 2 at 35 ° C.) are used as the constant-pressure gas source. A piston 26 disposed in a cylinder 25 having one end connected to the gas supply port 24 and the other end connected to the discharge side of the flow path 21 for the fire extinguishing agent. An operation rod 27 formed at an end of a piston 26 for operating the flow path valve 22 in a direction to open the flow path 21;
2 and a spring 28 for urging the piston 26 in the opposite direction.
【００２０】次に、この制圧弁の動作について説明す
る。定圧ガス源としての起動用ガス容器１１−１，１１
−２，１１−３からガス供給口２４にガス圧Ｐ1（１３
０Kgf／cm2）のガスを供給することにより、ピストン２
６をばね２８の付勢力に抗して移動させ、ピストン２６
の端部に形成した操作棒２７により流路弁２２をばね２
３の付勢力に抗して操作し、消火剤の流路２１を開放さ
せる。消火剤の流路２１が開放されると、消火剤貯蔵容
器１から流路２１内に消火剤が流入し、消火剤貯蔵容器
１内の消火剤のガス圧Ｐ2（３５℃において、１８０Kgf
／cm2）がピストン２６の他端側に作用し、ピストン２
６は、操作棒２７による流路弁２２の操作を解除する方
向に移動し、これにより、流路弁２２もばね２３の付勢
力を受けて消火剤の流路２１を閉鎖する方向に移動す
る。しかしながら、ピストン２６の一端側には、起動用
ガス容器１１−１，１１−２，１１−３のガス圧Ｐ1
（１３０Kgf／cm2）が作用しているため、流路弁２２
は、消火剤の流路２１を完全に閉鎖することなく、下記
の式（１）、（２）に従って、流路弁２２及びピストン
２６は瞬時に平衡し、出口側ガス圧Ｐ0は、基準ガス圧
Ｐ1（１３０kgf／cm2）によって規制される所定の値に
減圧される。Next, the operation of the pressure control valve will be described. Starting gas containers 11-1 and 11 as constant pressure gas sources
−2, 11-3 to the gas supply port 24 at the gas pressure P1 (13
0 kgf / cm 2 ), the piston 2
6 is moved against the urging force of the spring 28, and the piston 26 is moved.
Of the flow path valve 22 by the operating rod 27 formed at the end of the spring 2
Operate against the urging force of No. 3 to open the flow path 21 of the fire extinguishing agent. When the flow path 21 for the extinguishing agent is opened, the extinguishing agent flows into the flow path 21 from the extinguishing agent storage container 1 and the gas pressure P2 of the extinguishing agent in the extinguishing agent storage container 1 (180 kgf at 35 ° C.).
/ Cm 2 ) acts on the other end of the piston 26, and the piston 2
6 moves in a direction in which the operation of the flow path valve 22 by the operation rod 27 is released, whereby the flow path valve 22 also moves in a direction in which the flow path 21 of the fire extinguishing agent is closed by receiving the urging force of the spring 23. . However, one end of the piston 26 is provided with the gas pressure P1 of the starting gas containers 11-1, 11-2, and 11-3.
(130 kgf / cm 2 ) is acting, the flow path valve 22
Does not completely close the flow path 21 of the fire extinguishing agent, the flow path valve 22 and the piston 26 are instantaneously balanced according to the following equations (1) and (2), and the outlet side gas pressure P0 is The pressure is reduced to a predetermined value regulated by the pressure P1 (130 kgf / cm 2 ).
【００２１】 Ａ2・Ｐ2＋Ｂ2・Ｐ0＝Ａ2・Ｐ0＋Ｂ2・Ｐ1 ・・・（１） Ｐ0＝（Ｂ2・Ｐ1−Ａ2・Ｐ2）／（Ｂ2−Ａ2） ・・・（２） ここで、Ａは流路弁２２の弁座２３の直径、Ｂはピスト
ン２６の直径である。例えば、弁座２３の直径Ａが１
３．５mm、ピストン２６の直径Ｂが２６mmの制圧弁を用
いた場合には、流路２１の放出側の消火剤のガス圧Ｐ0
は、起動用ガス容器１１−１，１１−２，１１−３のガ
ス圧Ｐ1（１３０Kgf／cm2）よりやや低い１１０Kgf／cm
2程度に保持される。A 2 · P 2 + B 2 · P 0 = A 2 · P 0 + B 2 · P 1 (1) P 0 = (B 2 · P 1 -A 2 · P 2 ) / (B 2 -A 2 ) (2) Here, A is the diameter of the valve seat 23 of the flow path valve 22, and B is the diameter of the piston 26. For example, if the diameter A of the valve seat 23 is 1
When a pressure control valve having a diameter of 3.5 mm and a diameter B of the piston 26 of 26 mm is used, the gas pressure P0 of the fire extinguishing agent on the discharge side of the flow path 21 is used.
Is 110 kgf / cm, which is slightly lower than the gas pressure P1 (130 kgf / cm 2 ) of the starting gas containers 11-1, 11-2, and 11-3.
It is kept at about 2 .
【００２２】次に、この不活性ガス消火設備の火災の際
の動作について説明する。いま、消火対象区画６−１に
火災が発生したとすれば、火災発見者がこの消火対象区
画６−１に対応する押釦（手動操作の場合）を操作する
と、電気信号が起動用ガス容器開放用のソレノイド１２
−１に送られ、ソレノイド１２−１が動作して起動用ガ
ス容器１１−１が開放される。起動用ガス容器１１−１
が開放されることにより放出された起動用ガスは、ま
ず、選択弁開放装置１０−１に導入されて選択弁９−１
を開放してから、不還弁１４−１を経て起動用ガス管路
１３−１を通り、不還弁１４−Ａ及び不還弁１４−Ｂを
通過して全ての容器弁２に至って消火剤貯蔵容器１を５
本とも開放する。このとき、不還弁１４−２及び不還弁
１４−３を通過することができないため、選択弁９−２
及び選択弁９−３は開放されない。ところで、容器弁２
には、放出側の消火剤のガス圧Ｐを定圧ガス源のガス圧
Ｐ1によって規定される基準ガス圧Ｐ0以下に規制する制
圧弁を用いているため、開放された５本の消火剤貯蔵容
器１から基準ガス圧Ｐ0（１１０Kgf／cm2）以下に規制
された不活性ガスが、容器弁２、連結管３、集合管４、
選択弁９−１、主配管５−１及び枝管８−１を介して噴
射ヘッド７−１まで送られ、噴射ヘッド７−１から消火
対象区画６−１内に放出される。Next, the operation of the inert gas fire extinguishing system in the event of a fire will be described. Now, assuming that a fire has occurred in the fire extinguishing target section 6-1, when a fire discoverer operates the push button (in the case of manual operation) corresponding to the fire extinguishing target section 6-1, an electric signal is output to open the starting gas container. Solenoid 12 for
-1, the solenoid 12-1 operates to open the starting gas container 11-1. Starting gas container 11-1
The starting gas released by the opening of the valve is first introduced into the selection valve opening device 10-1, and the selection valve 9-1 is opened.
Is opened, passes through the nonreturn valve 14-1, passes through the starting gas pipeline 13-1, passes through the nonreturn valve 14-A and the nonreturn valve 14-B, reaches all the container valves 2, and extinguishes the fire. Agent storage container 1
Both books are open. At this time, since it cannot pass through the non-return valve 14-2 and the non-return valve 14-3, the selection valve 9-2
And the selection valve 9-3 is not opened. By the way, container valve 2
Uses a pressure control valve that regulates the gas pressure P of the extinguishing agent on the discharge side to a reference gas pressure P0 or less defined by the gas pressure P1 of the constant-pressure gas source. The inert gas regulated from 1 to the reference gas pressure P0 (110 kgf / cm 2 ) or less is supplied to the container valve 2, the connecting pipe 3, the collecting pipe 4,
It is sent to the injection head 7-1 via the selection valve 9-1, the main pipe 5-1 and the branch pipe 8-1, and is discharged from the injection head 7-1 into the fire extinguishing target section 6-1.
【００２３】また、消火対象区画６−２に火災が発生し
たとすれば、火災発見者がこの消火対象区画６−２に対
応する押釦（手動操作の場合）を操作すると、電気信号
が起動用ガス容器開放用のソレノイド１２−２に送ら
れ、ソレノイド１２−２が動作して起動用ガス容器１１
−２が開放される。起動用ガス容器１１−２が開放され
ることにより放出された起動用ガスは、まず、選択弁開
放装置１０−２に導入されて選択弁９−２を開放してか
ら、不還弁１４−２を経て起動用ガス管路１３−２を通
り、不還弁１４−Ｂを通過して容器弁２に至って消火剤
貯蔵容器１を３本だけ、すなわち、消火剤貯蔵容器１−
３，１−４，１−５を開放する。このとき、不還弁１４
−Ａを通過することができないため、消火剤貯蔵容器１
のうち２本、すなわち、消火剤貯蔵容器１−１，１−２
は開放されない。また、不還弁１４−１及び不還弁１４
−３を通過することができないため、選択弁９−１及び
選択弁９−３は開放されない。ところで、容器弁２に
は、放出側の消火剤のガス圧Ｐを定圧ガス源のガス圧Ｐ
1によって規定される基準ガス圧Ｐ0以下に規制する制圧
弁を用いているため、開放された３本の消火剤貯蔵容器
１−３，１−４，１−５から基準ガス圧Ｐ0（１１０Kgf
／cm2）以下に規制された不活性ガスが、容器弁２、連
結管３、集合管４、選択弁９−２、主配管５−２及び枝
管８−２を介して噴射ヘッド７−２まで送られ、噴射ヘ
ッド７−２から消火対象区画６−２内に放出される。If a fire occurs in the fire extinguishing target section 6-2, when a fire discoverer operates a push button (in the case of manual operation) corresponding to the fire extinguishing target section 6-2, an electric signal for starting is generated. It is sent to the solenoid 12-2 for opening the gas container, and the solenoid 12-2 operates to operate the gas container 11 for starting.
-2 is released. The starting gas released by opening the starting gas container 11-2 is first introduced into the selection valve opening device 10-2 to open the selection valve 9-2, and then the non-return valve 14- 2, through the starting gas line 13-2, through the non-return valve 14-B, to the container valve 2, and only three fire extinguisher storage containers 1, that is, the fire extinguisher storage container 1-
Release 3, 1-4, 1-5. At this time, non-return valve 14
-A, the fire extinguisher storage container 1
Two, namely, fire extinguisher storage containers 1-1 and 1-2.
Is not released. In addition, the non-return valve 14-1 and the non-return valve 14
-3 cannot pass through, so that the selection valves 9-1 and 9-3 are not opened. By the way, the gas pressure P of the extinguishing agent on the discharge side is supplied to the container valve 2 by the gas pressure P of the constant-pressure gas source.
Since the control valve for regulating the gas pressure to be equal to or lower than the reference gas pressure P0 specified by 1 is used, the reference gas pressure P0 (110 kgf) is supplied from the three opened fire extinguishing agent storage containers 1-3, 1-4, 1-5.
/ Cm 2 ) The inert gas regulated below is supplied to the injection head 7-via the container valve 2, the connecting pipe 3, the collecting pipe 4, the selection valve 9-2, the main pipe 5-2 and the branch pipe 8-2. 2 and is discharged from the ejection head 7-2 into the fire extinguishing section 6-2.
【００２４】また、消火対象区画６−３に火災が発生し
たとすれば、火災発見者がこの消火対象区画６−３に対
応する押釦（手動操作の場合）を操作すると、電気信号
が起動用ガス容器開放用のソレノイド１２−３に送ら
れ、ソレノイド１２−３が動作して起動用ガス容器１１
−３が開放される。起動用ガス容器１１−３が開放され
ることにより放出された起動用ガスは、まず、選択弁開
放装置１０−３に導入されて選択弁９−３を開放してか
ら、不還弁１４−３を経て起動用ガス管路１３−３を通
り、容器弁２に至って消火剤貯蔵容器１を１本だけ、す
なわち、消火剤貯蔵容器１−５を開放する。このとき、
不還弁１４−Ｂを通過することができない（したがっ
て、当然、不還弁１４−Ａも通過することができない）
ため、消火剤貯蔵容器１のうち４本、すなわち、消火剤
貯蔵容器１−１，１−２，１−３，１−４は開放されな
い。また、不還弁１４−１及び不還弁１４−２を通過す
ることができないため、選択弁９−１及び選択弁９−２
は開放されない。ところで、容器弁２には、放出側の消
火剤のガス圧Ｐを定圧ガス源のガス圧Ｐ1によって規定
される基準ガス圧Ｐ0以下に規制する制圧弁を用いてい
るため、開放された１本の消火剤貯蔵容器１−５から基
準ガス圧Ｐ0（１１０Kgf／cm2）以下に規制された不活
性ガスが、容器弁２、連結管３、集合管４、選択弁９−
３、主配管５−３及び枝管８−３を介して噴射ヘッド７
−３まで送られ、噴射ヘッド７−３から消火対象区画６
−３内に放出される。If a fire occurs in the fire extinguishing target section 6-3, when a fire discoverer operates a push button (in the case of manual operation) corresponding to the fire extinguishing target section 6-3, an electric signal is generated for activation. It is sent to the solenoid 12-3 for opening the gas container, and the solenoid 12-3 operates to operate the gas container 11 for starting.
-3 is released. The starting gas released by opening the starting gas container 11-3 is first introduced into the selection valve opening device 10-3 to open the selection valve 9-3, and then the non-return valve 14- After passing through 3 and passing through the starting gas pipeline 13-3, the container valve 2 is reached, and only one extinguishing agent storage container 1 is opened, that is, the extinguishing agent storage container 1-5 is opened. At this time,
Cannot pass through non-return valve 14-B (and, of course, cannot pass through non-return valve 14-A)
Therefore, four of the fire extinguishing agent storage containers 1, that is, the fire extinguishing agent storage containers 1-1, 1-2, 1-3, and 1-4 are not opened. In addition, since it cannot pass through the non-return valve 14-1 and the non-return valve 14-2, the selection valve 9-1 and the selection valve 9-2
Is not released. By the way, as the container valve 2, a pressure control valve for controlling the gas pressure P of the fire extinguishing agent on the discharge side to a reference gas pressure P0 defined by the gas pressure P1 of the constant pressure gas source is used. An inert gas regulated to a reference gas pressure P0 (110 kgf / cm 2 ) or less is supplied from the fire extinguishing agent storage container 1-5 of the first embodiment to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the selection valve 9-.
3. Injection head 7 via main pipe 5-3 and branch pipe 8-3
-3, and from the ejection head 7-3 to the fire extinguishing section 6
-3.
【００２５】以上、消火対象区画が３区画で、消火剤貯
蔵容器１の本数が５本の場合を例にして説明したが、消
火対象区画の数及び消火剤貯蔵容器１の本数並びに開放
される消火剤貯蔵容器１の本数は、本実施例（以下に示
す第２実施例及び第３実施例も同様。）のものに限定さ
れるものではなく、必要に応じて任意に設定することが
できる。As described above, the case where the number of fire extinguisher compartments is three and the number of fire extinguisher storage containers 1 is five has been described as an example. However, the number of fire extinguisher compartments, the number of fire extinguisher storage containers 1, and the number of fire extinguisher storage containers 1 are open. The number of fire extinguisher storage containers 1 is not limited to that of the present embodiment (the same is applied to the following second and third embodiments), and can be set arbitrarily as needed. .
【００２６】ところで、消火設備の二次側機器の耐圧グ
レードが１１０Kgf／cm2の場合において、起動用ガス容
器１１−１，１１−２，１１−３に、上記ガス圧Ｐ1
（１３０Kgf／cm2）より充填ガス圧の高い、例えば、充
填ガス圧１５０Kgf／cm2の起動用ガス容器を用いるとき
や、起動用ガス容器１１−１，１１−２，１１−３に充
填ガス圧１３０Kgf／cm2の起動用ガス容器を用いる場合
において、消火設備の二次側機器の耐圧グレードが１１
０Kgf／cm2より低いとき等には、定圧ガス源のガス圧Ｐ
1によって規制される流路２１の放出側の消火剤のガス
圧Ｐ0をさらに低下させる必要がある。When the pressure resistance grade of the secondary equipment of the fire extinguishing equipment is 110 kgf / cm 2 , the gas pressure P 1 is supplied to the starting gas containers 11-1, 11-2 and 11-3.
(130 kgf / cm 2 ), for example, when a starting gas container with a filling gas pressure of 150 kgf / cm 2 is used, or when the starting gas containers 11-1, 11-2, and 11-3 are filled. When a starting gas container with a pressure of 130 kgf / cm 2 is used, the pressure-resistant grade of the secondary equipment of the fire extinguishing equipment is 11
When the pressure is lower than 0 kgf / cm 2 , the gas pressure P
It is necessary to further reduce the gas pressure P0 of the fire extinguishing agent on the discharge side of the flow path 21 regulated by 1.
【００２７】本発明の消火設備用減圧装置は、これを制
圧弁を変更せずに実現するためのもので、その第１実施
例を図３〜図４に示す。この消火設備用減圧装置は、容
器弁２に用いた制圧弁の流路２１の放出側の消火剤のガ
ス圧Ｐ0が、設定ガス圧Ｐ3、例えば、１１０Kgf／cm2以
上になった場合に、定圧ガス源に用いた起動用ガス容器
１１から制圧弁２へ定圧ガスを供給する定圧ガス供給路
１３に、定圧ガス供給路１３を遮断する定圧ガス遮断弁
Ｓ1と、定圧ガス供給路１３内のガスを放出し、制圧弁
２にかかるガス圧を低下させる排気弁Ｓ2とを配設する
ようにしたものである。The pressure reducing device for fire extinguishing equipment according to the present invention realizes this without changing the pressure control valve. A first embodiment is shown in FIGS. This pressure reducing device for fire extinguishing equipment, when the gas pressure P0 of the fire extinguishing agent on the discharge side of the flow path 21 of the suppression valve used for the container valve 2 becomes equal to or higher than a set gas pressure P3, for example, 110 kgf / cm 2 . A constant-pressure gas supply passage 13 for supplying a constant-pressure gas from the starting gas container 11 used for the constant-pressure gas source to the pressure control valve 2; a constant-pressure gas shut-off valve S1 for shutting off the constant-pressure gas supply passage 13; An exhaust valve S2 for discharging gas and reducing the gas pressure applied to the pressure control valve 2 is provided.
【００２８】本実施例において、定圧ガス供給路１３に
配設する定圧ガス遮断弁Ｓ1は、集合管４に配設した圧
力計Ｐの圧力に応じて、定圧ガス供給路１３を開放又は
遮断する電磁弁で以て構成する。そして、集合管４、す
なわち、制圧弁２の流路２１の放出側の消火剤のガス圧
Ｐ0が、設定ガス圧Ｐ3、例えば、１１０Kgf／cm2以上に
なった場合に、定圧ガス遮断弁Ｓ1のリレー回路Ｒ１を
作動させて定圧ガス遮断弁Ｓ1を閉鎖することにより、
定圧ガス供給路１３を遮断し、起動用ガス容器１１から
制圧弁２へ定圧ガスが供給されることを停止するように
する。この場合、集合管４内の消火剤のガス圧Ｐ0が設
定ガス圧Ｐ3’、例えば、１０５Kgf／cm2未満となって
も、リレー回路Ｒ１により、定圧ガス遮断弁Ｓ1は閉鎖
した状態に維持され、これにより、定圧ガス供給路１３
は遮断した状態に維持される。また、制圧弁２のガス供
給口２４には、設定ガス圧Ｐ3に対応したガス圧Ｐ4が継
続して作用するため、消火剤貯蔵容器１からは、継続し
て消火剤が放出される。In this embodiment, the constant-pressure gas shut-off valve S1 arranged in the constant-pressure gas supply passage 13 opens or shuts off the constant-pressure gas supply passage 13 according to the pressure of the pressure gauge P arranged in the collecting pipe 4. It consists of a solenoid valve. When the gas pressure P0 of the fire extinguishing agent on the discharge side of the collecting pipe 4, that is, the flow path 21 of the suppression valve 2, becomes equal to or higher than the set gas pressure P3, for example, 110 kgf / cm 2 , the constant pressure gas shutoff valve S1 By actuating the relay circuit R1 to close the constant pressure gas shutoff valve S1,
The constant-pressure gas supply passage 13 is shut off to stop the supply of the constant-pressure gas from the starting gas container 11 to the pressure-suppressing valve 2. In this case, even if the gas pressure P0 of the fire extinguishing agent in the collecting pipe 4 becomes less than the set gas pressure P3 ', for example, less than 105 kgf / cm 2 , the constant pressure gas shutoff valve S1 is maintained closed by the relay circuit R1. Thereby, the constant pressure gas supply path 13
Are kept off. Further, since the gas pressure P4 corresponding to the set gas pressure P3 continuously acts on the gas supply port 24 of the suppression valve 2, the extinguishing agent is continuously discharged from the extinguishing agent storage container 1.
【００２９】また、容器弁２に用いた制圧弁の特性か
ら、定圧ガス遮断弁Ｓ1により定圧ガス供給路１３を遮
断しても、制圧弁２の流路２１の放出側の消火剤のガス
圧Ｐ0が上昇する傾向があり、これを防止するため、定
圧ガス供給路１３内のガスを放出し、制圧弁２のガス供
給口２４にかかるガス圧Ｐ4を低下させる排気弁Ｓ2を配
設するようにする。この排気弁Ｓ2は、集合管４に配設
した圧力計Ｐの圧力に応じて、定圧ガス供給路１３内の
ガスを放出し、制圧弁２のガス供給口２４にかかるガス
圧Ｐ4を低下させるようにする電磁弁で以て構成する。
そして、集合管４、すなわち、制圧弁２の流路２１の放
出側の消火剤のガス圧Ｐ0が、設定ガス圧Ｐ3、例えば、
１１０Kgf／cm2以上になった場合に、排気弁Ｓ2のリレ
ー回路Ｒ2を作動させて排気弁Ｓ2を開放することによ
り、定圧ガス供給路１３内のガスを、この定圧ガス供給
路から分岐した分岐管１３ａ、排気弁Ｓ2及び接続管１
３ｂを介して、集合管４に放出し、制圧弁２のガス供給
口２４にかかるガス圧Ｐ4を低下させることができる。
この場合、集合管４内の消火剤のガス圧Ｐ0が設定ガス
圧Ｐ3’、例えば、１０５Kgf／cm2未満になると、リレ
ー回路Ｒ２により、排気弁Ｓ2は閉鎖され、これによ
り、定圧ガス供給路１３内のガスの放出が停止される。
なお、分岐管１３ａ又は接続管１３ｂには、必要に応じ
て、定圧ガス供給路１３内から集合管４に放出するガス
量を調整するための流量調整弁を設けることができる。
また、本実施例においては、定圧ガス供給路１３内のガ
スを、集合管４に放出するように構成しているが、必ず
しもこれに限定されず、例えば、大気中に放出するよう
に構成することもできる。Further, from the characteristics of the pressure control valve used for the container valve 2, even if the constant pressure gas supply path 13 is cut off by the constant pressure gas cutoff valve S1, the gas pressure of the fire extinguishing agent on the discharge side of the flow path 21 of the pressure control valve 2 is increased. In order to prevent P0 from increasing, an exhaust valve S2 for releasing gas in the constant-pressure gas supply path 13 and reducing the gas pressure P4 applied to the gas supply port 24 of the suppression valve 2 is provided. To The exhaust valve S2 discharges the gas in the constant pressure gas supply passage 13 according to the pressure of the pressure gauge P disposed in the collecting pipe 4, and reduces the gas pressure P4 applied to the gas supply port 24 of the pressure control valve 2. It is constituted by the solenoid valve to be made.
The gas pressure P0 of the fire extinguishing agent on the discharge side of the collecting pipe 4, that is, the flow path 21 of the suppression valve 2, is set to a set gas pressure P3, for example,
When the pressure reaches 110 kgf / cm 2 or more, the relay circuit R2 of the exhaust valve S2 is operated to open the exhaust valve S2, thereby branching the gas in the constant-pressure gas supply path 13 from the constant-pressure gas supply path. Pipe 13a, exhaust valve S2 and connecting pipe 1
The gas is discharged to the collecting pipe 4 via 3b, and the gas pressure P4 applied to the gas supply port 24 of the control valve 2 can be reduced.
In this case, when the gas pressure P0 of the fire extinguishing agent in the collecting pipe 4 becomes lower than the set gas pressure P3 ′, for example, 105 kgf / cm 2 , the exhaust valve S2 is closed by the relay circuit R2, whereby the constant pressure gas supply passage is provided. The release of gas in 13 is stopped.
The branch pipe 13a or the connection pipe 13b may be provided with a flow control valve for adjusting the amount of gas released from the inside of the constant-pressure gas supply path 13 to the collecting pipe 4 if necessary.
Further, in the present embodiment, the gas in the constant-pressure gas supply path 13 is configured to be discharged to the collecting pipe 4, but is not necessarily limited to this. For example, the gas is configured to be released to the atmosphere. You can also.
【００３０】次に、上記第１実施例と同様の作用を奏す
る、本発明の消火設備用減圧装置の第２実施例を図５に
示す。この消火設備用減圧装置は、容器弁２に用いた制
圧弁の流路２１の放出側の消火剤のガス圧Ｐ0が、設定
ガス圧Ｐ3以上になった場合に、定圧ガス源に用いた起
動用ガス容器１１から制圧弁２へ定圧ガスを供給する定
圧ガス供給路１３に、定圧ガス供給路１３を遮断する定
圧ガス遮断弁３１と、定圧ガス供給路１３内のガスを放
出し、制圧弁２にかかるガス圧を低下させる排気弁３３
とを配設するようにしたものである。Next, FIG. 5 shows a second embodiment of the pressure reducing device for fire extinguishing equipment according to the present invention, which has the same operation as the first embodiment. When the gas pressure P0 of the extinguishing agent on the discharge side of the flow path 21 of the suppression valve used for the container valve 2 becomes equal to or higher than the set gas pressure P3, the pressure reducing device for fire extinguishing equipment is activated by using the constant pressure gas source. A constant-pressure gas supply path 13 for supplying a constant-pressure gas from the gas container 11 to the control valve 2, a constant-pressure gas shut-off valve 31 for shutting off the constant-pressure gas supply path 13, and releasing the gas in the constant-pressure gas supply path 13. Exhaust valve 33 for reducing gas pressure applied to 2
Is arranged.
【００３１】本実施例において、定圧ガス供給路１３に
配設する定圧ガス遮断弁３１は、定圧ガス供給路１３を
開放又は遮断するピストン３１ｂを備えたシリンダ３１
ａで以て構成する。そして、ピストン３１ｂの背面側の
シリンダ室を、接続口３１ｃ、逆止め弁を配設した接続
管４１ｂ、接続口３２ａ、定圧作動弁３２、接続口３２
ｂ、接続管４１ａを介して、集合管４に接続する。これ
により、集合管４、すなわち、制圧弁２の流路２１の放
出側の消火剤のガス圧Ｐ0が、設定ガス圧Ｐ3以上になっ
た場合に、この設定ガス圧Ｐ3で作動するように設定し
た定圧作動弁３２を作動させることにより、集合管４か
ら消火剤を、接続管４１ａ、接続口３２ｂ、定圧作動弁
３２、接続口３２ａ、接続管４１ｂ及び接続口３１ｃを
介して、定圧ガス遮断弁３１のピストン３１ｂの背面側
のシリンダ室に送り込み、起動用ガス容器１１の定圧ガ
スのガス圧を受けて定圧ガス供給路１３を開放状態にし
ているピストン３１ｂを図５に示す位置に移動させ、定
圧ガス供給路１３を遮断し、起動用ガス容器１１から制
圧弁２へ定圧ガスが供給されることを停止するようにす
る。この場合、集合管４内の消火剤のガス圧Ｐ0が設定
ガス圧Ｐ3未満となって、定圧作動弁３２が復帰して
も、接続管４１ｂに逆止め弁が配設されているため、定
圧ガス遮断弁３１のピストン３１ｂは、図５に示す位
置、すなわち、定圧ガス供給路１３を遮断した状態に維
持される。また、制圧弁２のガス供給口２４には、設定
ガス圧Ｐ3に対応したガス圧Ｐ4が継続して作用するた
め、消火剤貯蔵容器１からは、継続して消火剤が放出さ
れる。In this embodiment, the constant pressure gas shutoff valve 31 provided in the constant pressure gas supply passage 13 is a cylinder 31 having a piston 31b for opening or shutting off the constant pressure gas supply passage 13.
a. The connection port 31c, the connection pipe 41b provided with the check valve, the connection port 32a, the constant pressure operation valve 32, and the connection port 32
b, Connect to the collecting pipe 4 via the connecting pipe 41a. Thereby, when the gas pressure P0 of the fire extinguishing agent on the discharge side of the collecting pipe 4, that is, the flow path 21 of the suppression valve 2, becomes higher than the set gas pressure P3, the setting is made such that the operation is performed at the set gas pressure P3. By operating the constant-pressure operating valve 32, the fire extinguishing agent is discharged from the collecting pipe 4 through the connection pipe 41a, the connection port 32b, the constant-pressure operation valve 32, the connection port 32a, the connection pipe 41b, and the connection port 31c to shut off the constant-pressure gas. The piston 31b, which is fed into the cylinder chamber on the back side of the piston 31b of the valve 31 and receives the gas pressure of the constant-pressure gas in the starting gas container 11, moves the piston 31b, which opens the constant-pressure gas supply path 13, to the position shown in FIG. Then, the constant-pressure gas supply passage 13 is shut off, and the supply of the constant-pressure gas from the starting gas container 11 to the pressure-reducing valve 2 is stopped. In this case, even if the gas pressure P0 of the fire extinguishing agent in the collecting pipe 4 becomes lower than the set gas pressure P3 and the constant pressure operating valve 32 returns, the check valve is provided in the connection pipe 41b. The piston 31b of the gas shutoff valve 31 is maintained at the position shown in FIG. 5, that is, in a state where the constant pressure gas supply passage 13 is shut off. Further, since the gas pressure P4 corresponding to the set gas pressure P3 continuously acts on the gas supply port 24 of the suppression valve 2, the extinguishing agent is continuously discharged from the extinguishing agent storage container 1.
【００３２】また、容器弁２に用いた制圧弁の特性か
ら、定圧ガス遮断弁３１により定圧ガス供給路１３を遮
断しても、制圧弁２の流路２１の放出側の消火剤のガス
圧Ｐ0が上昇する傾向があり、これを防止するため、定
圧ガス供給路１３内のガスを放出し、制圧弁２のガス供
給口２４にかかるガス圧Ｐ4を低下させる排気弁３３を
配設するようにする。この排気弁３３は、定圧ガス供給
路１３内のガスを放出し、制圧弁２のガス供給口２４に
かかるガス圧Ｐ4を低下させるようにする弁体３３ｂ
と、この弁体３３ｂを開閉操作するピストン３３ａで以
て構成する。そして、ピストン３３ａの背面側のシリン
ダ室を、接続口３３ｃ、接続管４１ｃ，接続口３２ａ、
定圧作動弁３２、接続口３２ｂ、接続管４１ａを介し
て、集合管４に接続する。なお、接続管４１ｃは、必要
に応じて、流量調整弁、逆止め弁を配設した接続管４１
ｄを介して、接続管４１ａと接続するようにする。これ
により、集合管４、すなわち、制圧弁２の流路２１の放
出側の消火剤のガス圧Ｐ0が、設定ガス圧Ｐ3以上になっ
た場合に、この設定ガス圧Ｐ3で作動するように設定し
た定圧作動弁３２を作動させることにより、集合管４か
ら消火剤を、接続管４１ａ、接続口３２ｂ、定圧作動弁
３２、接続口３２ａ、接続管４１ｂ、接続管４１ｃ及び
接続口３３ｃを介して、排気弁３３のピストン３３ａの
背面側のシリンダ室に送り込んで、ピストン３３ａを摺
動させることにより、弁体３３ｂを開放するようにす
る。ここで、弁体３３ｂの弁室は、定圧ガス遮断弁３１
より制圧弁２側の定圧ガス供給路１３に、この定圧ガス
供給路１３から分岐した分岐管１３ａ及び接続口３３ｄ
を介して接続するとともに、集合管４に、接続口３３
ｅ、接続管１３ｂ及び接続管４１ａを介して接続するよ
うにしているため、弁体３３ｂが開放されると、定圧ガ
ス供給路１３内のガスは、分岐管１３ａ、接続口３３
ｄ、排気弁３３、接続口３３ｅ、接続管１３ｂ及び接続
管４１ａを介して、集合管４に放出され、制圧弁２のガ
ス供給口２４にかかるガス圧Ｐ4を低下させることがで
きる。この場合、集合管４内の消火剤のガス圧Ｐ0が設
定ガス圧Ｐ3未満となって、定圧作動弁３２が復帰する
と、排気弁３３のピストン３３ａが復帰して弁体３３ｂ
が閉鎖され、これにより、定圧ガス供給路１３内のガス
の放出が停止される。なお、分岐管１３ａ又は接続管１
３ｂには、必要に応じて、定圧ガス供給路１３内から集
合管４に放出するガス量を調整するための流量調整弁を
設けることができる。また、本実施例においては、定圧
ガス供給路１３内のガスを、集合管４に放出するように
構成しているが、必ずしもこれに限定されず、例えば、
大気中に放出するように構成することもできる。Also, due to the characteristics of the pressure control valve used for the container valve 2, even if the constant pressure gas supply path 13 is cut off by the constant pressure gas cutoff valve 31, the gas pressure of the fire extinguishing agent on the discharge side of the flow path 21 of the pressure control valve 2 is reduced. In order to prevent P0 from increasing, an exhaust valve 33 for discharging gas in the constant-pressure gas supply passage 13 and reducing the gas pressure P4 applied to the gas supply port 24 of the suppression valve 2 is provided. To The exhaust valve 33 discharges gas in the constant-pressure gas supply path 13 to reduce the gas pressure P4 applied to the gas supply port 24 of the pressure control valve 2.
And a piston 33a for opening and closing the valve body 33b. The cylinder chamber on the back side of the piston 33a is connected to the connection port 33c, the connection pipe 41c, the connection port 32a,
It is connected to the collecting pipe 4 via the constant pressure operation valve 32, the connection port 32b, and the connection pipe 41a. The connection pipe 41c is provided with a flow control valve and a check valve as necessary.
The connection pipe 41a is connected via d. Thereby, when the gas pressure P0 of the fire extinguishing agent on the discharge side of the collecting pipe 4, that is, the flow path 21 of the suppression valve 2, becomes higher than the set gas pressure P3, the setting is made such that the operation is performed at the set gas pressure P3. By operating the constant pressure operating valve 32, the fire extinguishing agent is discharged from the collecting pipe 4 through the connection pipe 41a, the connection port 32b, the constant pressure operation valve 32, the connection port 32a, the connection pipe 41b, the connection pipe 41c, and the connection port 33c. The valve body 33b is opened by moving the piston 33a of the exhaust valve 33 into the cylinder chamber on the back side of the piston 33a and sliding the piston 33a. Here, the valve chamber of the valve element 33b is
A branch pipe 13a branched from the constant-pressure gas supply path 13 and a connection port 33d are connected to the constant-pressure gas supply path 13 on the side of the control valve 2.
And the connecting pipe 33 is connected to the collecting pipe 4.
e, since the connection is made via the connection pipe 13b and the connection pipe 41a, when the valve body 33b is opened, the gas in the constant-pressure gas supply path 13 flows into the branch pipe 13a and the connection port 33.
d, the gas pressure P4 released to the collecting pipe 4 via the exhaust valve 33, the connection port 33e, the connection pipe 13b, and the connection pipe 41a and applied to the gas supply port 24 of the suppression valve 2 can be reduced. In this case, when the gas pressure P0 of the fire extinguishing agent in the collecting pipe 4 becomes lower than the set gas pressure P3 and the constant pressure operation valve 32 returns, the piston 33a of the exhaust valve 33 returns and the valve body 33b
Is closed, whereby the release of gas in the constant-pressure gas supply path 13 is stopped. The branch pipe 13a or the connection pipe 1
A flow control valve for adjusting the amount of gas discharged from the inside of the constant-pressure gas supply path 13 to the collecting pipe 4 can be provided in 3b as needed. Further, in the present embodiment, the gas in the constant-pressure gas supply path 13 is configured to be discharged to the collecting pipe 4, but the present invention is not limited to this.
It can also be configured to emit into the atmosphere.
【００３３】この消火設備用減圧装置によれば、１組の
定圧ガス遮断弁Ｓ1，３１、排気弁Ｓ2，３３等を組み込
むことによって、１種類の定圧ガス源１１及び制圧弁２
を用いて放出側の消火剤のガス圧を広範囲に調整するこ
とができることから、例えば、従来、二酸化炭素を消火
剤として使用していた消火設備（最高使用圧力１１０Kg
f／cm2）のような一般的な消火設備から、常に内部を負
圧に状態に保持する必要のある原子力関連設備（最高使
用圧力１０Kgf／cm2）のような特殊な消火設備まで、消
火剤の充填圧力が高い消火剤貯蔵容器を好適に使用する
ことが可能となり、消火設備の構築コスト及び保守コス
トを低廉にすることができる。According to this decompression system for fire extinguishing equipment, one type of constant pressure gas source 11 and one type of pressure control valve 2 are provided by incorporating a set of constant pressure gas shutoff valves S1, 31 and exhaust valves S2, 33.
Can be used to adjust the gas pressure of the extinguishing agent on the discharge side over a wide range. For example, a fire extinguishing system that conventionally used carbon dioxide as a fire extinguishing agent (maximum operating pressure 110 kg
f / cm 2 ) to special fire extinguishing equipment such as nuclear-related equipment (maximum operating pressure 10 kgf / cm 2 ), which needs to keep the inside at a negative pressure at all times. A fire extinguisher storage container having a high agent filling pressure can be suitably used, and the construction cost and maintenance cost of fire extinguishing equipment can be reduced.
【００３４】なお、本発明の消火設備用減圧装置は、上
記の実施例のものに限定されず、例えば、放出側の消火
剤のガス圧を定圧ガス源のガス圧によって規制するよう
にした制圧弁として、本件出願人が先に提案した各種の
制圧弁（例えば、特願平７ー１３８６３１号（特開平８
ー２９９４９２号）、特願平８ー１６１１３７号、特願
平９ー１１３４９３号参照）を使用することができる。The pressure reducing device for fire extinguishing equipment according to the present invention is not limited to the above-described embodiment. For example, a gas pressure of a fire extinguishing agent on the discharge side is regulated by the gas pressure of a constant pressure gas source. As the valves, various suppression valves proposed by the applicant of the present application (for example, Japanese Patent Application No. 7-138631 (Japanese Unexamined Patent Application Publication No.
Japanese Patent Application No. 8-161137 and Japanese Patent Application No. 9-113493).
【００３５】また、本発明の消火設備用減圧装置の使用
方法は、上記の実施例のものに限定されず、例えば、放
出側の消火剤のガス圧が異常に上昇することを防止する
安全装置として使用することもできる。この場合、例え
ば、作動設定ガス圧Ｐ3の異なる２組の定圧ガス遮断弁
及び排気弁を配設し、作動設定ガス圧の高い方の定圧ガ
ス遮断弁及び排気弁を安全装置として使用するようにす
る。The method of using the decompression device for fire extinguishing equipment of the present invention is not limited to the above-described embodiment. For example, a safety device for preventing the gas pressure of the extinguishing agent on the discharge side from abnormally increasing. It can also be used as In this case, for example, two sets of constant pressure gas shutoff valves and exhaust valves having different operation set gas pressures P3 are provided, and the constant pressure gas cutoff valve and the exhaust valve having the higher operation set gas pressure are used as safety devices. I do.
【００３６】[0036]
【発明の効果】本発明の消火設備用減圧装置によれば、
制圧弁の出口側圧力が設定ガス圧以上になった場合に、
定圧ガス源から制圧弁へ定圧ガスを供給する定圧ガス供
給路に配設した定圧ガス遮断弁によって、定圧ガス供給
路を遮断し、定圧ガス源から制圧弁へ定圧ガスが供給さ
れることを停止するとともに、制圧弁の特性から定圧ガ
ス供給路を遮断しても出口側圧力が上昇する傾向がある
ため、必要に応じて、排気弁を開放することによって、
定圧ガス供給路内のガスの一部を放出して、制圧弁にか
かるガス圧を低下させ、制圧弁の出口側圧力を設定ガス
圧以下に保持することができる。これにより、１種類の
定圧ガス源及び制圧弁を用いて放出側の消火剤のガス圧
を広範囲に調整することができ、一般的な消火設備か
ら、常に内部を負圧に状態に保持する必要のある原子力
関連設備のような特殊な消火設備まで、消火剤の充填圧
力が高い消火剤貯蔵容器を好適に使用することが可能と
なり、消火設備の構築コスト及び保守コストを低廉にす
ることができる。また、消火設備の二次側機器の耐圧グ
レードを上げることなく消火剤の充填圧力を高めること
ができ、消火剤貯蔵容器の設置スペースを小さくするこ
とができ、消火設備の二次側機器の耐圧グレードを上げ
る必要がないことと相俟って、設備費を低廉にすること
ができるとともに、消火設備の二次側機器の耐圧グレー
ドを上げる必要がないため、消火剤貯蔵容器内にガス状
態で貯蔵する消火剤を既存の設備にもそのまま適用する
ことができる。さらに、消火剤貯蔵容器内の消火剤の圧
力が、設定ガス圧以下に低下するまでは、制圧弁の放出
側の消火剤のガス圧を設定ガス圧に保持されるため、消
火剤の放出により消火剤貯蔵容器内の消火剤の圧力が低
下した場合でも、消火剤の放出量を一定に保つことがで
きることから、消火設備の容量を有効に利用することが
でき、設備費を低廉にすることができる。According to the pressure reducing device for fire extinguishing equipment of the present invention,
When the pressure on the outlet side of the suppression valve exceeds the set gas pressure,
A constant-pressure gas supply valve that supplies constant-pressure gas from the constant-pressure gas source to the control valve shuts off the constant-pressure gas supply path and stops the supply of constant-pressure gas from the constant-pressure gas source to the control valve. In addition, since the pressure on the outlet side tends to increase even if the constant-pressure gas supply path is shut off due to the characteristics of the suppression valve, by opening the exhaust valve as necessary,
Part of the gas in the constant-pressure gas supply path is released to reduce the gas pressure applied to the control valve, and the outlet side pressure of the control valve can be maintained at or below the set gas pressure. As a result, the gas pressure of the fire extinguishing agent on the discharge side can be adjusted over a wide range using one kind of constant-pressure gas source and a control valve. It is possible to suitably use a fire extinguisher storage container having a high extinguishing agent filling pressure even for special fire extinguishing equipment such as nuclear related equipment having a fire, and it is possible to reduce the construction cost and maintenance cost of the fire extinguishing equipment. . Also, it is possible to increase the filling pressure of the fire extinguishing agent without increasing the pressure resistance grade of the secondary equipment of the fire extinguishing equipment, to reduce the installation space for the fire extinguishing agent storage container, and to reduce the pressure resistance of the secondary equipment of the fire extinguishing equipment. Combined with the fact that there is no need to upgrade the grade, equipment costs can be reduced, and there is no need to raise the pressure resistance grade of the secondary equipment of the fire extinguishing equipment. The stored fire extinguisher can be applied to existing equipment as it is. Further, until the pressure of the fire extinguishing agent in the fire extinguishing agent storage container falls below the set gas pressure, the gas pressure of the fire extinguishing agent on the discharge side of the suppression valve is maintained at the set gas pressure. Even if the pressure of the fire extinguishing agent in the fire extinguishing agent storage container drops, the amount of fire extinguishing agent released can be kept constant, so that the capacity of fire extinguishing equipment can be used effectively and equipment costs can be reduced. Can be.
【図１】本発明の消火設備用減圧装置を適用する不活性
ガス消火設備の一例を示す概念図である。FIG. 1 is a conceptual diagram showing an example of an inert gas fire extinguishing system to which a pressure reducing device for a fire extinguishing system of the present invention is applied.
【図２】制圧弁の一例を示し、（ａ）はその全体図、
（ｂ）は流路弁の平面図、（ｃ）は同縦断面図である。FIG. 2 shows an example of a pressure control valve, (a) is an overall view thereof,
(B) is a top view of a flow-path valve, (c) is the same longitudinal cross-sectional view.
【図３】本発明の消火設備用減圧装置の第１実施例を示
す概念図である。FIG. 3 is a conceptual diagram showing a first embodiment of a pressure reducing device for fire extinguishing equipment of the present invention.
【図４】同説明図で、（ａ）は制御回路図、（ｂ）は集
合管内の消火剤のガス圧の変動を示すグラフ図、（ｃ）
は定圧ガス遮断弁及び排気弁の作動図である。4 (a) is a control circuit diagram, FIG. 4 (b) is a graph showing a change in gas pressure of a fire extinguishing agent in a collecting pipe, and FIG. 4 (c).
FIG. 4 is an operation diagram of a constant pressure gas shutoff valve and an exhaust valve.
【図５】本発明の消火設備用減圧装置の第２実施例を示
す概念図である。FIG. 5 is a conceptual diagram showing a second embodiment of the pressure reducing device for fire extinguishing equipment of the present invention.
１ 消火剤貯蔵容器 ２ 容器弁（制圧弁） ２１ 消火剤の流路 ２２ 流路弁 ２３ ばね ２４ ガス供給口 ２５ シリンダ ２６ ピストン ２７ 操作棒 ２８ ばね ６ 消火対象区画 ７ 噴射ヘッド １１ 起動用ガス容器（定圧ガス源） ３１ 定圧ガス遮断弁 ３２ 定圧作動弁 ３３ 排気弁 Ｓ1 定圧ガス遮断弁 Ｓ2 排気弁 Ｐ0 出口側ガス圧 Ｐ1 定圧ガス源のガス圧 Ｐ2 消火剤貯蔵容器の消火剤の充填ガス圧 Ｐ3 設定ガス圧 Ｐ4 制圧弁に作用するガス圧 DESCRIPTION OF SYMBOLS 1 Fire extinguishing agent storage container 2 Container valve (suppression valve) 21 Fire extinguishing agent flow path 22 Flow path valve 23 Spring 24 Gas supply port 25 Cylinder 26 Piston 27 Operating rod 28 Spring 6 Fire extinguishing target section 7 Injection head 11 Starting gas container ( 31 Constant-pressure gas shut-off valve 32 Constant-pressure operating valve 33 Exhaust valve S1 Constant-pressure gas shut-off valve S2 Exhaust valve P0 Outlet gas pressure P1 Gas pressure of constant-pressure gas source P2 Gas pressure of extinguishing agent in extinguishing agent storage container P3 Setting Gas pressure P4 Gas pressure acting on the control valve
Claims (1)
ている消火剤を消火対象区画内に放出し、消火対象区画
内の消火剤の濃度を消炎濃度以上に維持することによっ
て消火するようにした消火設備の消火剤の流路に、放出
側の消火剤のガス圧を定圧ガス源のガス圧によって規制
するようにした制圧弁を配設するようにした消火設備用
減圧装置において、制圧弁の出口側圧力が設定ガス圧以
上になった場合に、定圧ガス源から制圧弁へ定圧ガスを
供給する定圧ガス供給路に、該定圧ガス供給路を遮断す
る定圧ガス遮断弁と、定圧ガス供給路内のガスを放出
し、制圧弁にかかるガス圧を低下させる排気弁とを配設
したことを特徴とする消火設備用減圧装置。A fire extinguishing agent stored in a gaseous state in a fire extinguishing agent storage container is discharged into a fire extinguishing target compartment, and the fire extinguishing agent is extinguished by maintaining the concentration of the fire extinguishing agent in the fire extinguishing target compartment equal to or higher than the flame-extinguishing concentration. In a pressure reducing device for a fire extinguishing system, a pressure control valve for regulating the gas pressure of the extinguishing agent on the discharge side by the gas pressure of a constant pressure gas source is provided in the flow path of the extinguishing agent of the fire extinguishing system. A constant-pressure gas supply path for supplying a constant-pressure gas from a constant-pressure gas source to the control valve when the pressure on the outlet side of the valve becomes equal to or higher than a set gas pressure; a constant-pressure gas shut-off valve for shutting off the constant-pressure gas supply path; A pressure reducing device for fire extinguishing equipment, comprising: an exhaust valve that releases gas in a supply path and reduces a gas pressure applied to a pressure control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09154433A JP3096658B2 (en) | 1997-05-27 | 1997-05-27 | Decompression device for fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09154433A JP3096658B2 (en) | 1997-05-27 | 1997-05-27 | Decompression device for fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10323404A JPH10323404A (en) | 1998-12-08 |
| JP3096658B2 true JP3096658B2 (en) | 2000-10-10 |
Family
ID=15584090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09154433A Expired - Lifetime JP3096658B2 (en) | 1997-05-27 | 1997-05-27 | Decompression device for fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3096658B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4848105B2 (en) * | 2001-09-07 | 2011-12-28 | 日本フェンオール株式会社 | Fire extinguisher |
| JP6200197B2 (en) * | 2013-04-23 | 2017-09-20 | 株式会社モリタホールディングス | High-speed opening mechanism |
| WO2024075021A1 (en) * | 2022-10-04 | 2024-04-11 | Tyco Fire Products Lp | Fire suppression system with regulator |
-
1997
- 1997-05-27 JP JP09154433A patent/JP3096658B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10323404A (en) | 1998-12-08 |
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