JPH09319439A - Pressure reducing device - Google Patents
Pressure reducing deviceInfo
- Publication number
- JPH09319439A JPH09319439A JP16113796A JP16113796A JPH09319439A JP H09319439 A JPH09319439 A JP H09319439A JP 16113796 A JP16113796 A JP 16113796A JP 16113796 A JP16113796 A JP 16113796A JP H09319439 A JPH09319439 A JP H09319439A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure
- fire extinguishing
- valve
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000006837 decompression Effects 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 271
- 239000003795 chemical substances by application Substances 0.000 description 28
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 description 13
- 239000001569 carbon dioxide Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 229910001873 dinitrogen Inorganic materials 0.000 description 11
- 229920004449 Halon® Polymers 0.000 description 8
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 8
- 239000011261 inert gas Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- -1 halon gas Chemical compound 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003533 narcotic effect Effects 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- KAVGMUDTWQVPDF-UHFFFAOYSA-N perflubutane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)F KAVGMUDTWQVPDF-UHFFFAOYSA-N 0.000 description 1
- 229950003332 perflubutane Drugs 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、消火剤ガス貯蔵容
器内にガス状態で貯蔵されている不活性消火剤ガスを消
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
したガス系消火設備等において、高圧の供給側ガス圧を
所定の出口側ガス圧に減圧するために用いられる減圧装
置に関するものである。TECHNICAL FIELD The present invention relates to extinguishing an inert fire extinguisher gas stored in a gas state in a fire extinguisher gas storage container into a fire-extinguishing target compartment to extinguish the concentration of the fire-extinguishing agent in the fire-extinguishing target compartment. The present invention relates to a decompression device used for reducing a high-pressure supply-side gas pressure to a predetermined outlet-side gas pressure in a gas-based fire extinguishing facility or the like that is extinguished by maintaining a concentration or more.
【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ガス系消火設備
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, a fire extinguisher has been used as a gas-based fire extinguisher equipment that extinguishes a fire by extinguishing the fire extinguishing agent in the fire extinguishing target compartment and maintaining the concentration of the fire extinguishing agent in the fire extinguishing target compartment above the extinction concentration Those using an inert gas such as carbon dioxide or halon gas have been put into 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ガス貯蔵容
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
火剤ガス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ガス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 pressurized and liquefied and filled in a fire extinguisher gas storage container composed of a high-pressure gas container to extinguish fire extinguishing equipment. In the event of a fire, use appropriate electrical or pneumatic means to open the container valve of the fire extinguishing agent gas storage container to remove carbon dioxide and halon gas from the fire extinguishing agent gas storage container. From the nozzle to the injection head via a pipe, and discharges from the injection head into the fire extinguishing target compartment. At this time, the inert gas such as carbon dioxide or halon gas is sent in a liquid state up to the ejection head, and is vaporized and becomes a gas state at the moment when it is released from the ejection head into the fire extinguishing target compartment, and then in the fire extinguishing compartment 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。On the other hand, it is known that the fire extinguishing equipment using this carbon dioxide as a fire extinguishing agent has 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) During a fire, carbon dioxide is sent in a liquid state up to the jet head, and is vaporized into a gas state at the moment it is released from the jet head into the fire-extinguishing target compartment. Since the heat of vaporization is taken away, the saturated vapor pressure of the air in the room is lowered, the moisture in the air is condensed, and static electricity is generated. As a result, the inside of the room will be fogged, hindering people's evacuation and rescue, and fire extinguishing work.In addition, dew condensation and static electricity may cause insulation failure and failure of electronic devices, which may cause a serious secondary disaster. is there. (3) Since the density of carbon dioxide is much higher than that of air, the carbon dioxide released into the fire-extinguishing target compartment stays in the lower part of the fire-extinguishing target compartment, reducing the fire-extinguishing effect, and It is easy to dissipate to the outside from the lower opening. (4) Since global warming issues have been raised on a global scale, carbon dioxide, like halon gas, may be restricted in future use.
【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、上記従来のガス系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（Ｃ4Ｆ10））、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（Ｃ2Ｈ
Ｆ5））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（特願平６ー３１２６９０号
及び特願平７ー７７３７４号）。By the way, the applicant of the present invention has proposed to solve the above-mentioned many problems of the conventional gas fire extinguishing system by first adding nitrogen gas or nitrogen gas to a gas that does not destroy the ozone layer. Fluoroalkane (perfluorobutane (C4F10)), hydrogenofluoroalkane (trifluoromethane (CHF3), heptafluoropropane (C3HF7) or pentafluoroethane (C2H
F5)) or hydrogenofluorohalogenoalkane (iodotrifluoromethane (CF3I)) (hereinafter,
These are collectively referred to as "fluorine compounds". (Japanese Patent Application Nos. 6-31690 and 6-313690) have proposed a fire extinguishing system using a mixed gas (hereinafter, simply referred to as a "mixed gas") obtained by mixing at least one of the above types in a proportion of 10% by volume or less. No. 7-77374).
【０００８】しかしながら、ガス系消火設備の消火剤と
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) ガス系消火設備の消火剤としての窒素ガスや混合ガ
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ガス貯蔵容器の数が数倍必要とな
り、消火剤ガス貯蔵容器の大きな設置スペースが必要と
なる。 (2) 設置する消火剤ガス貯蔵容器の数を低減するために
は、消火剤ガス貯蔵容器に充填する不活性消火剤ガスの
充填圧力を高める必要があるが、不活性消火剤ガスの充
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不活性消火剤ガスの高
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、設備費が著し
く高くなり、また、既存の設備には、適用できない。However, it has been found that the following problems also occur when nitrogen gas or mixed gas is used as a fire extinguishing agent for gas fire extinguishing equipment. (1) Nitrogen gas or mixed gas as a fire extinguishing agent for gas fire extinguishing equipment is used under pressure and stored in gaseous state. Compared with halon gas, the number of fire extinguisher gas storage containers required for extinguishing a fire extinguishing target compartment of the same volume is several times larger, and a large installation space for fire extinguisher gas storage containers is required. (2) In order to reduce the number of installed extinguishant gas storage containers, it is necessary to increase the filling pressure of the inert extinguishant gas to fill the extinguishant gas storage container. If the pressure is increased, a high gas pressure of the inert fire extinguishing agent gas will be applied to the secondary side equipment of the fire extinguishing equipment such as the selection valve, the main pipe, the branch pipe, and the injection head. It is necessary to increase the pressure resistance grade, which significantly increases the equipment cost, and cannot be applied to existing equipment.
【０００９】本発明は、消火剤として窒素ガスや混合ガ
ス等の消火剤ガス貯蔵容器内にガス状態で貯蔵される不
活性消火剤ガスを使用するガス系消火設備の有する問題
点に鑑み、高圧の供給側ガス圧を所定の出口側ガス圧に
減圧することができ、これにより、例えば、ガス系消火
設備に適用した場合に、ガス系消火設備の二次側機器の
耐圧グレードを上げずに不活性消火剤ガスの充填圧力を
高めることができる減圧装置を提供することを目的とす
る。In view of the problems of the gas-based fire extinguishing equipment using an inert fire extinguisher gas stored in a gas state in a fire extinguishant gas storage container such as nitrogen gas or a mixed gas as a fire extinguishing agent, the present invention has a high pressure. It is possible to reduce the gas pressure on the supply side to a predetermined gas pressure on the outlet side, so that, for example, when applied to gas fire extinguishing equipment, without increasing the pressure resistance grade of the secondary equipment of the gas fire extinguishing equipment. An object of the present invention is to provide a decompression device capable of increasing the filling pressure of an inert fire extinguishing agent gas.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するた
め、本発明の減圧装置は、両側の受圧面に供給側ガス圧
及び出口側ガス圧がそれぞれ所定の面積割合でかかるよ
うに構成したガス流路に配設した流路弁と、一方の受圧
面に基準ガス圧が、他方の受圧面に出口側ガス圧がかか
るように構成するとともに、前記他方の受圧面に流路弁
を操作する操作棒を突設したピストンとからなることを
特徴とする。In order to achieve the above object, the decompression device of the present invention is a gas configured so that the supply side gas pressure and the outlet side gas pressure are applied to the pressure receiving surfaces on both sides at predetermined area ratios. The flow passage valve disposed in the flow passage and the reference gas pressure on one pressure receiving surface and the outlet side gas pressure on the other pressure receiving surface are configured, and the flow passage valve is operated on the other pressure receiving surface. It is characterized in that it is composed of a piston having an operating rod projecting therefrom.
【００１１】本発明の減圧装置は、ガス流路に配設した
流路弁の両側の受圧面に供給側ガス圧及び出口側ガス圧
がそれぞれ所定の面積割合でかかるように構成すること
により、高圧の供給側ガス圧を所定の出口側ガス圧に減
圧する減圧装置を、コンパクトな構造により実現するこ
とができ、また、出口側ガス圧の値を基準ガス圧を変え
ることによって広い範囲で、かつ、高精度に調整するこ
とができる。このため、この減圧装置を、ガス系消火設
備に適用した場合には、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不活性消火剤ガスの充填圧力を
高めることができるとともに、供給側ガス圧が低下した
場合でも、不活性消火剤ガスの放出量を一定に保つこと
ができる。The depressurizing device of the present invention is configured so that the supply side gas pressure and the outlet side gas pressure are applied to the pressure receiving surfaces on both sides of the flow path valve arranged in the gas flow path at predetermined area ratios, respectively. A decompression device that decompresses the high-pressure supply-side gas pressure to a predetermined outlet-side gas pressure can be realized with a compact structure, and the value of the outlet-side gas pressure can be changed in a wide range by changing the reference gas pressure. And it can be adjusted with high accuracy. For this reason, when this pressure reducing device is applied to gas-based fire extinguishing equipment, it is possible to increase the filling pressure of the inert fire extinguishing agent gas without increasing the pressure resistance grade of the secondary equipment of the fire extinguishing equipment, and at the supply side. Even when the gas pressure drops, the amount of the inert fire extinguishing agent gas released can be kept constant.
【００１２】この場合において、ガス流路のガス供給側
をガス貯蔵容器に直結するように構成し、これにより、
減圧装置を容器弁として用いることができる。In this case, the gas supply side of the gas flow path is directly connected to the gas storage container.
A decompression device can be used as a container valve.
【００１３】[0013]
【発明の実施の形態】以下、本発明の減圧装置の実施の
形態を図面に示すガス系消火設備に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the decompression device of the present invention will be described below based on the gas-based fire extinguishing equipment shown in the drawings.
【００１４】図１に、本発明の減圧装置を用いたガス系
消火設備の一例を示す。本例は、３つの消火対象区画６
−１，６−２，６−３を有する場合のガス系消火設備を
示したものである。このガス系消火設備は、不活性消火
剤ガスとして、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、１
８０kgf／cm2）で消火設備内に保管することにより、消
火剤ガス貯蔵容器１として利用する。本例のガス系消火
設備には、５本の消火剤ガス貯蔵容器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に選択的に不活性消火剤ガスを送る
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 gas fire extinguishing facility using the pressure reducing device of the present invention. In this example, three fire extinguishing compartments 6
It shows the gas-based fire extinguishing equipment in the case of having -1, 6-2, 6-3. This gas-based fire extinguishing equipment uses, for example, nitrogen gas as an inert fire extinguishing agent gas, and pressurizes this gas to fill a high-pressure gas container (
It is used as the extinguishant gas storage container 1 by storing it in the fire extinguishing equipment at 80 kgf / cm 2 ). The gas-based fire extinguishing equipment of this example includes five extinguishant gas storage containers 1-1, 1-2,
.. Provided with 1-5, a connecting pipe 3 is connected to each container 1 via a container valve 2, and further the connecting pipe 3 is connected to one collecting pipe 4, and this collecting pipe 4 is Target sections 6-1 and 6
Main piping 5-1, 5-2, 5-3 extending to 2, 6-3
Connect to. Selection valves 9-1, 9-2, 9-3 are provided in the main pipes 5-1, 5-2, 5-3, and the fire extinguishing target section 6-
Inert fire extinguishing agent gas is selectively sent to 1, 6-2 and 6-3. The main pipes 5-1, 5-2 and 5-3 extending to the fire extinguishing sections 6-1, 6-2 and 6-3 are respectively placed in the fire extinguishing sections 6-1, 6-2 and 6-3. Branch pipe 8 arranged
-1, 8-2, 8-3, and the branch pipes 8-1, 8-
Injection heads 7-1, 7-2, 7- in which a plurality of 2,8-3 are arranged at appropriate places in fire extinguishing sections 6-1, 6-2, 6-3.
Connect to 3.
【００１５】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不活性消火剤ガスの量も異なる。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ガス貯蔵容
器１が開放されるようにガス系消火設備を構成する。By the way, in general, each of the fire extinguishing target sections 6-1,
Since 6-2 and 6-3 have different volumes, naturally, the amount of inert fire extinguishing agent gas required to extinguish a fire also differs. For this reason, the diameters of the main pipes 5-1, 5-2, 5-3 are made different according to the volumes of the fire extinguishing sections 6-1, 6-2, 6-3. Fire extinguishing area 6
The gas-based fire extinguishing equipment is configured such that the number of the extinguishant gas storage containers 1 corresponding to 1, 6-2, 6-3 is opened.
【００１６】ここで、開放すべき消火剤ガス貯蔵容器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、１０−１，１０−２，１０−３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、１３−１，１３−２，１
３−３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−
３，１４−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 extinguishant gas storage container 1 to be opened.
The number of the fire extinguishing target section 6-1 is 5, the fire extinguishing section 6
-2 is set to 3 and the fire extinguishing target section 6-3 is set to 1. In the figure, 9-1, 9-2, 9-3 are selection valves, 10-1, 10-2, 10-3 are selection valve opening devices,
11-1, 11-2, 11-3 are gas containers for starting, 12
Reference numerals -1, 12-2, 12-3 are solenoids for opening the starting gas container. Also, in the figure, 13-1, 13-2, 1
3-3 is a starting gas pipeline for controlling opening of the selection valves 9-1, 9-2, 9-3 and the starting gas containers 11-1, 11-2, 11-3, and is a selection valve opening device. 10-1,
10-2, 10-3, the non-return valve 14-1, 14-2, 14-3, 14-A, 14-B in the proper place on the way.
To arrange. In addition, non-return valve 14-1, 14-2, 14-
The passable directions of 3, 14-A and 14-B are represented by the directions of the arrows in the figure. The numbers 1, 2, and 3 at the end of these members correspond to the numbers 1, 2, and 3 at the end of the fire extinguishing target section, respectively.
【００１７】この場合において、容器弁２には、図２に
示す、高圧の供給側ガス圧Ｐ0を定圧ガス源からの基準
ガス圧Ｐ1によって規定される所定の出口側ガス圧Ｐ2に
減圧することができる本発明に係る減圧装置を用いる。
この減圧装置２は、両側の受圧面にガス流路２１のガス
供給側２１ａから供給側ガス圧Ｐ0が、また、ガス流路
２１のガス出口側２１ｂから（図２において下方の受圧
面には出口側ガス供給流路２１ｃを介して）出口側ガス
圧Ｐ2がそれぞれ所定の面積割合でかかるように構成し
たガス流路２１に配設した流路弁２２と、ガス流路２１
を閉鎖する方向に流路弁２２を付勢するばね２３と、一
方の受圧面に定圧ガス源（本例の場合は、定圧ガス源と
して、窒素ガスを充填（３５℃において、１１０kgf／c
m2）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。）から定圧ガス供給流路２
４を介して基準ガス圧Ｐ1が、他方の受圧面にガス出口
側２１ｂから出口側ガス供給流路２１ｄを介して出口側
ガス圧Ｐ2がかかるように構成するとともに、他方の受
圧面に流路弁２２を操作する操作棒２７を突設したピス
トン２６と、流路弁２２の方向とは逆方向にピストン２
６を付勢するばね２８とからなる。この場合において、
減圧装置２は、ガス貯蔵容器１に直結するようにしたガ
ス流路２１のガス供給側２１ａを構成するガス供給側本
体２０ａと、ガス流路２１のガス出口側２１ｂ及び弁座
２９を構成するガス出口側本体２０ｂと、定圧ガス供給
流路２４及びピストン２６を収容するシリンダ２５を構
成する定圧ガス供給流路側本体２０ｃとからなり、これ
らを一体的に組み立てて構成するようにしている。In this case, in the container valve 2, the high pressure supply side gas pressure P0 shown in FIG. 2 is reduced to a predetermined outlet side gas pressure P2 defined by the reference gas pressure P1 from the constant pressure gas source. The decompression device according to the present invention is used.
In this pressure reducing device 2, the supply side gas pressure P0 is supplied from the gas supply side 21a of the gas passage 21 to the pressure receiving surfaces on both sides, and the gas outlet side 21b of the gas passage 21 is provided (the lower pressure receiving surface in FIG. A flow path valve 22 disposed in the gas flow path 21 configured so that the outlet side gas pressure P2 is applied at a predetermined area ratio (via the outlet side gas supply flow path 21c);
A spring 23 for urging the flow path valve 22 in the direction of closing the valve and a constant pressure gas source on one pressure receiving surface (in this example, nitrogen gas is charged as a constant pressure gas source (at 35 ° C., 110 kgf / c).
m 2 ) Startup gas containers 11-1, 11-2, 11-3
I use it. ) To constant pressure gas supply channel 2
4, the reference gas pressure P1 is applied to the other pressure receiving surface from the gas outlet side 21b via the outlet side gas supply flow path 21d, and the reference gas pressure P2 is applied to the other pressure receiving surface. The piston 26 provided with an operating rod 27 for operating the valve 22 and the piston 2 in the direction opposite to the direction of the flow path valve 22.
6 and a spring 28 for biasing 6. In this case,
The decompression device 2 constitutes a gas supply side main body 20a constituting the gas supply side 21a of the gas flow passage 21 which is directly connected to the gas storage container 1, a gas outlet side 21b of the gas flow passage 21 and a valve seat 29. It comprises a gas outlet side main body 20b and a constant pressure gas supply passage side main body 20c which constitutes a cylinder 25 accommodating the constant pressure gas supply passage 24 and the piston 26, and these are integrally assembled and configured.
【００１８】次に、この減圧装置２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１１−１，１
１−２，１１−３から定圧ガス供給流路２４に基準ガス
圧Ｐ1（１１０kgf／cm2）の窒素ガスを供給することに
より、ピストン２６をばね２８の付勢力に抗して移動さ
せ、ピストン２６の受圧面に突設した操作棒２７により
流路弁２２をばね２３の付勢力に抗して操作し、ガス流
路２１を開放させる。ガス流路２１が開放されると、消
火剤ガス貯蔵容器１からガス流路２１のガス出口側２１
ｂに不活性消火剤ガスが流入するが、減圧装置２は、流
路弁２２の両側の受圧面に、消火剤ガス貯蔵容器１内の
不活性消火剤ガスの供給側ガス圧Ｐ0（３５℃におい
て、１８０kgf／cm2）及び出口側ガス圧Ｐ2が、また、
ピストン２６の一方の受圧面に定圧ガス源からの基準ガ
ス圧Ｐ1（３５℃において、１１０kgf／cm2）が、他方
の受圧面に出口側ガス圧Ｐ2が、それぞれ所定の面積割
合でかかるように構成されているため、下記の式（１）
に従って流路弁２２及びピストン２６は、瞬時に平衡
し、本例の場合、表１及び表２に示すように、出口側ガ
ス圧Ｐ2は、起動用ガス容器１１−１，１１−２，１１
−３の基準ガス圧Ｐ1（１１０kgf／cm2）と略等しい値
に保持される。なお、表１及び表２の出口側ガス圧Ｐ2
は、式（１）から導出した式（２）により算出した数値
である。 （Ａ2−Ｃ2）Ｐ0＋（Ｃ2＋Ｂ2）Ｐ2＝Ｂ2・Ｐ1＋Ａ2・Ｐ2 ・・・（１） Ｐ2＝（Ｂ2・Ｐ1−（Ａ2−Ｃ2）Ｐ0）／（Ｃ2＋Ｂ2−Ａ2） ・・・（２） ここで、Ａは、弁座２９の直径、Ｂは、ピストン２６の
直径、Ｃは、流路弁２２の出口側ガス圧Ｐ2がかかる下
方の受圧面の直径である。この場合において、減圧装置
２によって保持される出口側ガス圧Ｐ2は、定圧ガス
源、すなわち、起動用ガス容器１１−１，１１−２，１
１−３の基準ガス圧Ｐ1自体を調整したり、起動用ガス
容器１１−１，１１−２，１１−３に圧力調整器を配設
し、この圧力調整器により基準ガス圧Ｐ1を調整した
り、流路弁２２及びピストン２６の形状を異ならせるこ
と等により変更することができるが、不活性ガス消火設
備の設計上、出口側ガス圧Ｐ2が基準ガス圧Ｐ0と略等し
い値に保持されるように構成することが望ましい。な
お、この減圧装置２は、定圧ガス源、すなわち、起動用
ガス容器１１−１，１１−２，１１−３からの窒素ガス
の供給を停止するとともに、定圧ガス供給流路２４内の
窒素ガスを排出することにより、ガス流路２１を閉鎖す
ることができる機能を有するものであり、この機能を利
用して、一旦開放した消火剤ガス貯蔵容器を閉鎖するよ
うに構成することも可能である。Next, the operation of the decompression device 2 will be described. Starting gas containers 11-1, 1 as a constant pressure gas source
By supplying the nitrogen gas having the reference gas pressure P1 (110 kgf / cm 2 ) from 1-2 and 11-3 to the constant pressure gas supply passage 24, the piston 26 is moved against the biasing force of the spring 28, and the piston 26 is moved. The flow path valve 22 is operated against the biasing force of the spring 23 by the operation rod 27 projecting from the pressure receiving surface of 26, and the gas flow path 21 is opened. When the gas channel 21 is opened, the extinguishant gas storage container 1 is connected to the gas outlet side 21 of the gas channel 21.
Although the inert fire extinguisher gas flows into b, the pressure reducing device 2 supplies the gas pressure P0 (35 ° C.) of the inert fire extinguisher gas in the fire extinguishant gas storage container 1 to the pressure receiving surfaces on both sides of the flow path valve 22. At 180 kgf / cm 2 ) and the outlet side gas pressure P2,
The reference gas pressure P1 (110 kgf / cm 2 at 35 ° C.) from the constant pressure gas source is applied to one pressure receiving surface of the piston 26, and the outlet side gas pressure P2 is applied to the other pressure receiving surface at a predetermined area ratio. Since it is configured, the following formula (1)
Accordingly, the flow path valve 22 and the piston 26 instantaneously equilibrate, and in the case of this example, as shown in Tables 1 and 2, the outlet side gas pressure P2 is equal to the starting gas containers 11-1, 11-2, 11
-3 is maintained at a value substantially equal to the reference gas pressure P1 (110 kgf / cm 2 ). The gas pressure P2 on the outlet side in Tables 1 and 2
Is a numerical value calculated by the equation (2) derived from the equation (1). (A 2 -C 2) P0 + (C 2 + B 2) P2 = B 2 · P1 + A 2 · P2 ··· (1) P2 = (B 2 · P1- (A 2 -C 2) P0) / (C 2 + B 2 −A 2 ) ... (2) where A is the diameter of the valve seat 29, B is the diameter of the piston 26, and C is the lower pressure received by the outlet side gas pressure P 2 of the flow path valve 22. The diameter of the face. In this case, the outlet side gas pressure P2 held by the pressure reducing device 2 is the constant pressure gas source, that is, the starting gas containers 11-1, 11-2, 1
The reference gas pressure P1 itself of 1-3 is adjusted, or a pressure regulator is arranged in the starting gas containers 11-1, 11-2, 11-3, and the reference gas pressure P1 is adjusted by this pressure regulator. Alternatively, it can be changed by changing the shapes of the flow path valve 22 and the piston 26. However, due to the design of the inert gas fire extinguishing equipment, the outlet gas pressure P2 is maintained at a value substantially equal to the reference gas pressure P0. It is desirable to configure it as follows. The decompression device 2 stops the supply of the nitrogen gas from the constant pressure gas source, that is, the starting gas containers 11-1, 11-2, and 11-3, and at the same time, the nitrogen gas in the constant pressure gas supply flow path 24. It has a function of closing the gas flow passage 21 by discharging the gas. It is possible to use this function to close the once-opened extinguishant gas storage container. .
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】そして、この減圧装置２は、表１及び表２
に示すように、消火剤ガス貯蔵容器１内の不活性消火剤
ガスの圧力、すなわち、供給側ガス圧Ｐ0が、基準ガス
圧Ｐ1以下に低下するまでは、出口側ガス圧Ｐ2を基準ガ
ス圧Ｐ1と略等しい値に保持する機能を有しているた
め、不活性消火剤ガスの放出により消火剤ガス貯蔵容器
内の不活性消火剤ガスの圧力が低下した場合でも、出口
側ガス圧Ｐ2を基準ガス圧Ｐ1と略等しい値に維持するこ
とにより、不活性消火剤ガスの放出量を一定に保つこと
ができる。The pressure reducing device 2 is shown in Table 1 and Table 2.
As shown in, until the pressure of the inert fire extinguishant gas in the fire extinguisher gas storage container 1, that is, the supply side gas pressure P0 is reduced to the reference gas pressure P1 or less, the outlet side gas pressure P2 is changed to the reference gas pressure P2. Since it has the function of keeping the value approximately equal to P1, even if the pressure of the inert fire extinguishant gas in the fire extinguisher gas storage container decreases due to the release of the inert fire extinguisher gas, the outlet side gas pressure P2 By maintaining the value substantially equal to the reference gas pressure P1, the amount of the inert fire extinguishing agent gas released can be kept constant.
【００２２】次に、この減圧装置２を容器弁として用い
た上記のガス系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１
０−１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に至って消火剤ガス貯蔵容器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、高圧の供給
側ガス圧Ｐ0を定圧ガス源からの基準ガス圧Ｐ1によって
規定される所定の出口側ガス圧Ｐ2に減圧することがで
きる減圧装置を用いているため、開放された５本の消火
剤ガス貯蔵容器１から基準ガス圧Ｐ1（１１０kgf／c
m2）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 above gas-based fire extinguishing equipment using the decompression device 2 as a container valve 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 a 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. Is sent to the solenoid 12-1, and the solenoid 12-1 operates to open the starting gas container 11-1. The start-up gas released by opening the start-up gas container 11-1 is first selected by the selection valve opening device 1
0-1 to open the selection valve 9-1 and then pass through the non-return valve 14-1 and the starting gas pipe line 13-1 to return the non-return valve 14-A and the non-return valve 14-B. And all the container valves 2 are passed through and all five extinguishant gas storage containers 1 are opened.
At this time, since the non-return valve 14-2 and the non-return valve 14-3 cannot pass through the selection valve 9-2 and the selection valve 9-3,
Is not released. By the way, since the container valve 2 uses a pressure reducing device capable of reducing the high-pressure supply-side gas pressure P0 to a predetermined outlet-side gas pressure P2 defined by the reference gas pressure P1 from the constant-pressure gas source, From the five extinguishant gas storage containers 1 that have been opened, the reference gas pressure P1 (110 kgf / c
m 2 ) The inert gas regulated below is the container valve 2, the connecting pipe 3, the collecting pipe 4, the selection valve 9-1, the main pipe 5-1 and the branch pipe 8.
It is sent to the ejection head 7-1 via -1, and is ejected from the ejection 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
ガス貯蔵容器１を３本だけ、すなわち、消火剤ガス貯蔵
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、消火剤ガ
ス貯蔵容器１のうち２本、すなわち、消火剤ガス貯蔵容
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、容器弁２には、高圧の供給側ガス圧
Ｐ0を定圧ガス源からの基準ガス圧Ｐ1によって規定され
る所定の出口側ガス圧Ｐ2に減圧することができる減圧
装置を用いているため、開放された３本の消火剤ガス貯
蔵容器１−３，１−４，１−５から基準ガス圧Ｐ1（１
１０kgf／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 pipe line 13-2, the non-return valve 14-B and the container valve 2 to reach only the three extinguishant gas storage containers 1, that is, the extinguishant gas storage container 1-3. , 1-4, 1-5 are opened. At this time, since it cannot pass through the non-return valve 14-A, two of the extinguishant gas storage containers 1, that is, the extinguishant gas storage containers 1-1 and 1-2 are not opened. In addition, non-return valve 14-
1 and the non-return valve 14-3 cannot be passed,
The selection valve 9-1 and the selection valve 9-3 are not opened. By the way, the container valve 2 has a decompression device capable of reducing the high-pressure supply-side gas pressure P0 to a predetermined outlet-side gas pressure P2 defined by the reference gas pressure P1 from the constant-pressure gas source. Since the three extinguishant gas storage containers 1-3, 1-4, 1-5 that are open are used, the reference gas pressure P1 (1
The inert gas regulated to 10 kgf / cm 2 ) or less is used as the container valve 2, the connecting pipe 3, the collecting pipe 4, the selection valve 9-2, and the main pipe 5-2.
And to the jet head 7-2 through the branch pipe 8-2,
It is discharged from the jet head 7-2 into the fire extinguishing target 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に至って消火剤ガス貯蔵容器１を１本だ
け、すなわち、消火剤ガス貯蔵容器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、消火剤ガス貯蔵容器１のうち４本、す
なわち、消火剤ガス貯蔵容器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、容器弁２には、高圧の供給側ガス圧Ｐ0を定圧
ガス源からの基準ガス圧Ｐ1によって規定される所定の
出口側ガス圧Ｐ2に減圧することができる減圧装置を用
いているため、開放された１本の消火剤ガス貯蔵容器１
−５から基準ガス圧Ｐ1（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 the starting gas pipe line 13-3 via 3 and reaching the container valve 2, only one extinguishant gas storage container 1, that is, the extinguishant gas storage container 1-5 is opened.
At this time, since the non-return valve 14-B cannot pass through (therefore, the non-return valve 14-A cannot pass through, of course), four of the extinguishant gas storage containers 1, that is, the extinguishant Gas storage container 1-1, 1-2, 1-3,
1-4 are not opened. Further, since the non-return valve 14-1 and the non-return valve 14-2 cannot pass through, the selection valve 9-
1 and the selection valve 9-2 are not opened. By the way, the container valve 2 has a decompression device capable of reducing the high-pressure supply-side gas pressure P0 to a predetermined outlet-side gas pressure P2 defined by the reference gas pressure P1 from the constant-pressure gas source. Since one is used, one extinguishant gas storage container 1 that has been opened
The inert gas regulated from −5 to the reference gas pressure P1 (110 kgf / cm 2 ) or less is the container valve 2, the connecting pipe 3, the collecting pipe 4,
It is sent to the injection head 7-3 via the selection valve 9-3, the main pipe 5-3, and the branch pipe 8-3, and is discharged from the injection head 7-3 into the fire extinguishing target section 6-3.
【００２５】以上、消火対象区画が３区画で、消火剤ガ
ス貯蔵容器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ガス貯蔵容器１の本数
並びに開放される消火剤ガス貯蔵容器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。In the above, the case where the extinguishant gas storage container 3 is 3 and the number of the extinguishant gas storage containers 1 is 5 has been described as an example. The number of the extinguishant gas storage containers 1 to be formed is the same as that of the present embodiment (the same applies to the second and third embodiments described below).
It is not limited to the above, and can be arbitrarily set as necessary.
【００２６】また、上記のガス系消火設備においては、
本発明に係る減圧装置を従来の容器弁に代えて用いるよ
うにしたが、これに限定されず、図３に示すように、上
記のガス系消火設備における消火剤ガス貯蔵容器１と選
択弁９−１，９−２，９−３とを接続する集合管４の適
所に、減圧装置１８を配設するとともに、起動用ガス容
器１１−１，１１−２，１１−３とは別に、定圧ガス源
として、窒素ガスを充填（３５℃において、１１０Kgf
／cm2）した定圧ガス容器１９を設けることもできる。
このように、集合管４に本発明に係る減圧装置１８を設
けることにより、容器弁２に通常の容器弁を使用するこ
とができ、設備費を低廉にすることができる。なお、消
火剤ガス貯蔵容器１から減圧装置１８に至るまでの容器
弁２、連結管３及び集合管４等の消火設備の一次側機器
には不活性消火剤ガスの高いガス圧がかかることとな
り、このため、これら一次側機器は、この高いガス圧に
耐えるように構成する必要があるが、集合管４等は、主
配管５−１，５−２，５−３に比べ管の内径が小さいた
め、耐圧が高く、このため、消火設備の一次側機器の耐
圧グレードを上げる必要がないため、設備費を低廉にす
ることができるとともに、既存の設備にもそのまま適用
することができる。Further, in the above gas-based fire extinguishing equipment,
Although the decompression device according to the present invention is used in place of the conventional container valve, the present invention is not limited to this, and as shown in FIG. 3, the extinguishant gas storage container 1 and the selection valve 9 in the above gas-based fire extinguishing equipment. A decompression device 18 is provided at an appropriate position of the collecting pipe 4 that connects the -1, 9, 2 and 9-3, and a constant pressure is provided separately from the starting gas containers 11-1, 11-2 and 11-3. As a gas source, fill with nitrogen gas (at 35 ° C, 110 Kgf
It is also possible to provide a constant pressure gas container 19 having a pressure of / cm 2 ).
As described above, by providing the pressure reducing device 18 according to the present invention in the collecting pipe 4, a normal container valve can be used as the container valve 2, and the equipment cost can be reduced. In addition, a high gas pressure of the inert fire extinguisher gas is applied to the primary side equipment of the fire extinguishing equipment such as the container valve 2, the connecting pipe 3 and the collecting pipe 4 from the fire extinguisher gas storage container 1 to the pressure reducing device 18. Therefore, although these primary-side devices need to be configured to withstand this high gas pressure, the collecting pipe 4 and the like have a pipe inner diameter larger than that of the main pipes 5-1, 5-2, 5-3. Since it is small, the pressure resistance is high. Therefore, it is not necessary to increase the pressure resistance grade of the primary equipment of the fire extinguishing equipment, so that the equipment cost can be reduced and the existing equipment can be applied as it is.
【００２７】本発明の減圧装置２は、ガス流路２１に配
設した流路弁２２の両側の受圧面に供給側ガス圧Ｐ0及
び出口側ガス圧Ｐ2がそれぞれ所定の面積割合でかかる
ように構成することにより、減圧装置をコンパクトな構
造とすることができ、また、出口側ガス圧Ｐ2の値を基
準ガス圧Ｐ1を変えることによって広い範囲で、かつ、
高精度に調整することができる（例えば、表３及び表４
に示すように、基準ガス圧Ｐ1を変えることによって、
出口側ガス圧Ｐ2を供給側ガス圧Ｐ0と比較して極めて小
さい値に保持することができる。なお、表３及び表４の
出口側ガス圧Ｐ2は、式（１）から導出した式（２）に
より算出した数値である。）ため、その適用対象は、上
記のガス系消火設備に限定されず、例えば、原子力発電
所や半導体製造工場等の設備内に定圧で各種のガスを供
給する定圧ガス供給設備等の極めて広い範囲に適用する
ことができるものである。In the depressurizing device 2 of the present invention, the supply side gas pressure P0 and the outlet side gas pressure P2 are applied to the pressure receiving surfaces on both sides of the flow passage valve 22 arranged in the gas flow passage 21 at predetermined area ratios. With this configuration, the decompression device can have a compact structure, and the value of the outlet gas pressure P2 can be changed in a wide range by changing the reference gas pressure P1.
It can be adjusted with high precision (for example, Tables 3 and 4).
As shown in, by changing the reference gas pressure P1,
The outlet side gas pressure P2 can be maintained at an extremely small value as compared with the supply side gas pressure P0. The outlet gas pressure P2 in Tables 3 and 4 is a numerical value calculated by the equation (2) derived from the equation (1). Therefore, its application is not limited to the above-mentioned gas-based fire extinguishing equipment, but for example, a very wide range of constant pressure gas supply equipment that supplies various gases at constant pressure into equipment such as nuclear power plants and semiconductor manufacturing plants. Can be applied to.
【００２８】[0028]
【表３】 [Table 3]
【００２９】[0029]
【表４】 [Table 4]
【００３０】[0030]
【発明の効果】本発明の減圧装置によれば、高圧の供給
側ガス圧を所定の出口側ガス圧に減圧する減圧装置を、
コンパクトな構造により実現することができ、また、出
口側ガス圧の値を基準ガス圧を変えることによって広い
範囲で、かつ、高精度に調整することができる。このた
め、この減圧装置を、ガス系消火設備に適用した場合に
は、ガス系消火設備の二次側機器の耐圧グレードを上げ
ることなく不活性消火剤ガスの充填圧力を高めることが
でき、消火剤ガス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、消火剤ガス貯蔵容器内に
ガス状態で貯蔵する不活性消火剤ガスを既存の設備にも
そのまま適用することができる。また、この減圧装置
は、消火剤ガス貯蔵容器内の不活性消火剤ガスの圧力、
すなわち、供給側ガス圧が、基準ガス圧以下に低下する
までは、出口側ガス圧を基準ガス圧と略等しい値に保持
する機能を有しているため、不活性消火剤ガスの放出に
より消火剤ガス貯蔵容器内の不活性消火剤ガスの圧力が
低下した場合でも、出口側ガス圧を基準ガス圧と略等し
い値に維持することにより、不活性消火剤ガスの放出量
を一定に保つことができることから、所消火設備の容量
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 of the present invention, a pressure reducing device for reducing a high-pressure supply-side gas pressure to a predetermined outlet-side gas pressure is provided.
It can be realized with a compact structure, and the value of the outlet side gas pressure can be adjusted in a wide range and with high accuracy by changing the reference gas pressure. Therefore, when this pressure reducing device is applied to gas fire extinguishing equipment, it is possible to increase the filling pressure of the inert fire extinguishing agent gas without increasing the pressure resistance grade of the secondary equipment of the gas fire extinguishing equipment. Combined with the fact that the installation space for the agent gas storage container can be reduced and there is no need to increase the pressure resistance grade of the secondary equipment of the fire extinguishing equipment, the equipment cost can be reduced and the fire extinguishing equipment Since there is no need to increase the pressure resistance grade of the secondary equipment, the inert fire extinguishant gas stored in the extinguishant gas storage container in a gas state can be applied to existing equipment as it is. In addition, this pressure reducing device, the pressure of the inert fire extinguisher gas in the fire extinguisher gas storage container,
In other words, until the supply-side gas pressure falls below the reference gas pressure, it has a function of holding the outlet-side gas pressure at a value approximately equal to the reference gas pressure, so extinguishing fire by releasing the inert extinguishant gas. Even if the pressure of the inert fire extinguishant gas in the agent gas storage container drops, the discharge side of the inert fire extinguishing agent gas is kept constant by maintaining the outlet gas pressure at a value approximately equal to the reference gas pressure. Therefore, it is possible to effectively use the capacity of the fire extinguishing equipment and reduce the equipment cost.
【００３１】また、減圧装置をガス流路のガス供給側を
ガス貯蔵容器に直結するように構成することにより、容
器弁として用いることができる。Further, by constructing the decompression device so that the gas supply side of the gas passage is directly connected to the gas storage container, it can be used as a container valve.
【図面の簡単な説明】[Brief description of drawings]
【図１】ガス系消火設備の一例を示す図である。FIG. 1 is a diagram showing an example of a gas fire extinguishing system.
【図２】本発明の減圧装置を示し、（ａ）はその全体断
面図、（ｂ）はＩ−Ｉ線の端面図である。2A and 2B show a pressure reducing device of the present invention, wherein FIG. 2A is an overall sectional view thereof, and FIG. 2B is an end view taken along line II.
【図３】ガス系消火設備の変形例を示す図である。FIG. 3 is a view showing a modification of the gas fire extinguishing equipment.
１ 消火剤ガス貯蔵容器 ２ 容器弁（減圧装置） ２１ ガス流路 ２２ 流路弁 ２３ ばね ２４ 定圧ガス供給流路 ２５ シリンダ ２６ ピストン ２７ 操作棒 ２８ ばね ２９ 弁座 ６ 消火対象区画 ７ 噴射ヘッド １８ 減圧装置 Ｐ0 供給側ガス圧 Ｐ1 基準ガス圧 Ｐ2 出口側ガス圧 1 Fire Extinguishant Gas Storage Container 2 Container Valve (Decompression Device) 21 Gas Flow Path 22 Flow Path Valve 23 Spring 24 Constant Pressure Gas Supply Flow Path 25 Cylinder 26 Piston 27 Operating Rod 28 Spring 29 Valve Seat 6 Extinguishing Target Zone 7 Jet Head 18 Pressure Reduction Equipment P0 Supply side gas pressure P1 Reference gas pressure P2 Outlet side gas pressure
【手続補正書】[Procedure amendment]
【提出日】平成９年３月３日[Submission date] March 3, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】ここで、開放すべき消火剤ガス貯蔵容器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、１０−１，１０−２，１０−３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、１３−１，１３−２，１
３−３は、選択弁９−１，９−２，９−３及び消火剤ガ
ス貯蔵容器１−１，１−２，・・・１−５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１４−１，１４−２，１
４−３，１４−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 extinguishant gas storage container 1 to be opened.
The number of the fire extinguishing target section 6-1 is 5, the fire extinguishing section 6
-2 is set to 3 and the fire extinguishing target section 6-3 is set to 1. In the figure, 9-1, 9-2, 9-3 are selection valves, 10-1, 10-2, 10-3 are selection valve opening devices,
11-1, 11-2, 11-3 are gas containers for starting, 12
Reference numerals -1, 12-2, 12-3 are solenoids for opening the starting gas container. Also, in the figure, 13-1, 13-2, 1
Reference numeral 3-3 is a starting gas pipeline for controlling opening of the selection valves 9-1, 9-2, 9-3 and the extinguishant gas storage containers 1-1, 1-2, ... 1-5, Selective valve opening device 10-
1, 10-2, 10-3, and non-return valves 14-1, 14-2, 14-3, 14-A, 14 at appropriate places on the way.
-B is installed. In addition, non-return valve 14-1, 14-2, 1
The passable directions of 4-3, 14-A, and 14-B are represented by the directions of the arrows in the figure. The numbers 1, 2, and 3 at the end of these members are the numbers 1, 2, and 3 at the end of the fire-extinguishing target section.
It corresponds to each.
Claims (2)
び出口側ガス圧（Ｐ2）がそれぞれ所定の面積割合でか
かるように構成したガス流路（２１）に配設した流路弁
（２２）と、一方の受圧面に基準ガス圧（Ｐ1）が、他
方の受圧面に出口側ガス圧（Ｐ2）がかかるように構成
するとともに、前記他方の受圧面に流路弁（２２）を操
作する操作棒（２７）を突設したピストン（２６）とか
らなることを特徴とする減圧装置。1. A flow passage valve disposed in a gas flow passage (21) configured such that a supply side gas pressure (P0) and an outlet side gas pressure (P2) are applied to respective pressure receiving surfaces at a predetermined area ratio. (22), the reference gas pressure (P1) is applied to one pressure receiving surface, the outlet side gas pressure (P2) is applied to the other pressure receiving surface, and the flow path valve (22) is applied to the other pressure receiving surface. And a piston (26) projecting an operating rod (27) for operating the pressure reducing device.
ａ）をガス貯蔵容器（１）に直結するように構成したこ
とを特徴とする請求項１記載の減圧装置。2. The gas supply side (21) of the gas flow path (21)
The decompression device according to claim 1, wherein a) is directly connected to the gas storage container (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16113796A JP2960012B2 (en) | 1996-05-31 | 1996-05-31 | Decompression device for gas fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16113796A JP2960012B2 (en) | 1996-05-31 | 1996-05-31 | Decompression device for gas fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09319439A true JPH09319439A (en) | 1997-12-12 |
| JP2960012B2 JP2960012B2 (en) | 1999-10-06 |
Family
ID=15729304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16113796A Expired - Lifetime JP2960012B2 (en) | 1996-05-31 | 1996-05-31 | Decompression device for gas fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2960012B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175261A (en) * | 2007-01-17 | 2008-07-31 | Koatsu Co Ltd | Pressure reducing device and gas-based fire extinguishing installation using the same |
| JP2012063016A (en) * | 2011-12-19 | 2012-03-29 | Koatsu Co Ltd | Pressure reducing device, and gas system fire extinguishing equipment using the same |
-
1996
- 1996-05-31 JP JP16113796A patent/JP2960012B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175261A (en) * | 2007-01-17 | 2008-07-31 | Koatsu Co Ltd | Pressure reducing device and gas-based fire extinguishing installation using the same |
| JP2012063016A (en) * | 2011-12-19 | 2012-03-29 | Koatsu Co Ltd | Pressure reducing device, and gas system fire extinguishing equipment using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2960012B2 (en) | 1999-10-06 |
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