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JP2021186550A - Fire extinguishing equipment - Google Patents

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JP2021186550A
JP2021186550A JP2020097664A JP2020097664A JP2021186550A JP 2021186550 A JP2021186550 A JP 2021186550A JP 2020097664 A JP2020097664 A JP 2020097664A JP 2020097664 A JP2020097664 A JP 2020097664A JP 2021186550 A JP2021186550 A JP 2021186550A
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fire extinguishing
extinguishing water
line
pressure
water
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JP7378352B2 (en
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浩司 佐藤
Koji Sato
法道 志賀
Kazumichi Shiga
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Nohmi Bosai Ltd
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  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

To provide a fire extinguishing equipment in which a predefined mixture ratio is maintained even when an unexpected situation occurs such as a dust blocking a bubble head and so on.SOLUTION: A fire extinguishing equipment according to the present invention includes: a fire extinguishing water line 3; a fire extinguishing agent container 5; a fire extinguishing agent line 7; and a line proportioner 9 provided between the fire extinguishing agent line 7 and the fire extinguishing water line 3 and which mixes the fire extinguishing agent into the fire extinguishing water. There are provided: a detecting means for detecting a pressure P1 of the fire extinguishing agent line 7, or a secondary-side pressure P2 of a line proportioner 9 in the fire extinguishing water line 3, or a flow rate of the fire extinguishing agent line 7; and a fire extinguishing water discharging valve 15 for outwardly discharging a part of the fire extinguishing water flowing on a secondary side of the line proportioner 9 in the fire extinguishing water line 3. By opening and closing the fire extinguishing water discharging valve 15 based on the detection value of the detection means to control the pressure on the secondary side, the mixture ratio of the fire extinguishing agent with respect to the fire extinguishing water can be maintained within the predefined range.SELECTED DRAWING: Figure 1

Description

本発明は、プロポーショナーを用いて水と消火薬剤を混合する消火設備に関するものであり、特に所定の混合比を得ることができる圧力のバンドが狭いラインプロポーショナーにおいて有効である。
なお、本願における消火設備は、水と消火薬剤との混合によって泡を発生させて消火を行う泡消火設備の他、水と消火薬剤の混合液を主として油面に噴霧して油の気化を抑制して消火を行う閉鎖型噴霧消火設備等のプロポーショナーを用いて水と消火薬剤を混合して消火を行う消火設備を含む。
The present invention relates to a fire extinguishing system that mixes water and a fire extinguishing agent using a proportioner, and is particularly effective in a line proportioner having a narrow pressure band capable of obtaining a predetermined mixing ratio.
The fire extinguishing equipment in the present application is a foam fire extinguishing equipment that extinguishes a fire by generating bubbles by mixing water and a fire extinguishing agent, and also sprays a mixed solution of water and a fire extinguishing agent mainly on the oil surface to suppress the vaporization of oil. Includes fire extinguishing equipment that extinguishes a fire by mixing water and a fire extinguishing agent using a proportioner such as a closed-type spray fire extinguishing equipment that extinguishes a fire.

ラインプロポーショナーを用いて水と消火薬剤を混合して消火を行う消火設備としては、例えば特許文献1に開示された泡消火設備が一般的である(特許文献1参照)。
このような泡消火設備に用いられるラインプロポーショナーは、内部を通過する流水に起因して発生する吸引力により消火薬剤を吸引して、吸引される消火薬剤と水を混合するというものである。
As a fire extinguishing equipment that extinguishes a fire by mixing water and a fire extinguishing agent using a line proportioner, for example, the foam fire extinguishing equipment disclosed in Patent Document 1 is generally used (see Patent Document 1).
The line proportioner used in such a foam fire extinguishing facility sucks the fire extinguishing agent by the suction force generated by the flowing water passing through the inside, and mixes the sucked fire extinguishing agent and water.

このようなラインプロポーショナーは、消火薬剤を自吸しているため、消火薬剤をのど部に向けて押し込む力が不要であり、例えば消火薬剤を貯蔵容器から押し出すための設備が不要となる。これにより貯蔵容器の耐圧性能が不要となり、設備全体が単純化される、コストが比較的安価であるという利点がある。 Since such a line proportioner self-sucks the fire extinguishing agent, it does not need a force to push the fire extinguishing agent toward the throat, and for example, a facility for pushing the fire extinguishing agent out of the storage container becomes unnecessary. This eliminates the need for pressure resistance of the storage container, simplifies the entire equipment, and has the advantages of relatively low cost.

特開2005−218474号公報Japanese Unexamined Patent Publication No. 2005-218474

一般に泡消火は、泡が燃焼物を覆うことによって燃焼に必要な酸素を遮断すること、及び泡を構成する水分が燃焼に必要な温度を取り除くことによって消火を行う。そのため、所定の発泡倍率の泡を発生させることが重要である。
このようなラインプロポーショナーは、自吸される消火薬剤と水との混合比が所定の値になるように設計されるが、その設計仕様は、末端に接続された泡ヘッドが必要とする圧力・流量に基づいて定められている。
In general, foam extinguishing extinguishes a fire by blocking oxygen required for combustion by covering the combustible material with foam and removing the temperature required for combustion by the water constituting the foam. Therefore, it is important to generate bubbles having a predetermined foaming ratio.
Such line proportioners are designed so that the mixing ratio of self-priming fire extinguishing agent and water is at a predetermined value, but the design specification is the pressure required by the foam head connected to the end.・ It is determined based on the flow rate.

しかしながら、泡ヘッドにゴミが詰まる等により、ラインプロポーショナーの2次側の圧力が上昇すると圧力と流量の関係性が崩れ、所定の混合比が得られず、設計された発泡倍率の泡を発生させることができないことが生ずる。燃焼している油に水をかけることは非常に危険であり、所定の発泡倍率を得られない場合、鎮火できないだけでなく、被害を拡大してしまう恐れがある。
このような課題は、泡消火設備の他、上述した閉鎖型噴霧消火設備におけるスプリンクラーヘッドにゴミが詰まる等した場合にも共通する。
However, when the pressure on the secondary side of the line proportioner rises due to clogging of the foam head with dust, the relationship between the pressure and the flow rate is broken, the predetermined mixing ratio cannot be obtained, and bubbles with the designed foam magnification are generated. Something cannot be done. It is very dangerous to sprinkle water on the burning oil, and if the specified foaming ratio cannot be obtained, not only the fire cannot be extinguished, but also the damage may be spread.
Such a problem is common not only to the foam fire extinguishing equipment but also to the case where the sprinkler head in the above-mentioned closed spray fire extinguishing equipment is clogged with dust.

本発明はかかる課題を解決するためになされたものであり、ヘッドにゴミが詰まる等の不具合が生じたときにも所定の混合比を維持することができる消火設備を提供することを目的としている。 The present invention has been made to solve such a problem, and an object of the present invention is to provide a fire extinguishing system capable of maintaining a predetermined mixing ratio even when a problem such as clogging of a head with dust occurs. ..

(1)本発明に係る消火設備は、消火水が流れる消火水ラインと、消火薬剤を貯留する消火薬剤容器と、該消火薬剤容器内の消火薬剤を前記消火水ライン側に供給する消火薬剤ラインと、該消火薬剤ラインと前記消火水ラインとの間に設けられて前記消火水に前記消火薬剤を混合するプロポーショナーと、を備えたものであって、
前記消火薬剤ラインの圧力P1、又は前記消火水ラインにおける前記プロポーショナーの二次側の圧力P2、又は消火薬剤ラインの流量を検知する検知手段と、前記消火水ラインを流れる消火水の一部を外部に放出する消火水放出弁とを有し、
前記検知手段の検知値に基づいて前記消火水放出弁を開閉して、前記二次側の圧力を制御することにより、前記消火水に対する前記消火薬剤の混合比を所定の範囲に維持できるようにしたことを特徴とするものである。
(1) The fire extinguishing equipment according to the present invention includes a fire extinguishing water line through which fire extinguishing water flows, a fire extinguishing agent container for storing fire extinguishing agents, and a fire extinguishing agent line for supplying the fire extinguishing agent in the extinguishing agent container to the fire extinguishing water line side. And a proportioner provided between the fire extinguishing agent line and the fire extinguishing water line to mix the extinguishing agent with the extinguishing water.
A detection means for detecting the pressure P1 of the fire extinguishing agent line, the pressure P2 on the secondary side of the proportioner in the fire extinguishing water line, or the flow rate of the fire extinguishing agent line, and a part of the fire extinguishing water flowing through the fire extinguishing water line. It has a fire extinguishing water discharge valve that discharges to the outside,
By opening and closing the fire extinguishing water discharge valve based on the detection value of the detecting means and controlling the pressure on the secondary side, the mixing ratio of the fire extinguishing agent to the fire extinguishing water can be maintained within a predetermined range. It is characterized by what has been done.

(2)また、消火水が流れる消火水ラインと、消火薬剤を貯留する消火薬剤容器と、該消火薬剤容器内の消火薬剤を前記消火水ライン側に供給する消火薬剤ラインと、該消火薬剤ラインと前記消火水ラインとの間に設けられて前記消火水に前記消火薬剤を混合するプロポーショナーと、を備えた消火設備であって、
前記消火水ラインを流れる消火水の一部を外部に放出する消火水放出弁を有し、
該消火水放出弁は、前記消火薬剤ラインの圧力P1又は前記消火水ラインにおける前記プロポーショナーの二次側の圧力P2に基づいて開閉して、前記二次側の圧力を制御することにより、前記消火水に対する前記消火薬剤の混合比を所定の範囲に維持することを特徴とするものである。
(2) Further, a fire extinguishing water line through which fire extinguishing water flows, a fire extinguishing agent container for storing fire extinguishing agents, a fire extinguishing agent line for supplying the fire extinguishing agent in the extinguishing agent container to the fire extinguishing water line side, and the fire extinguishing agent line. A fire extinguishing facility provided between a fire extinguishing water line and a proportioner for mixing the fire extinguishing agent with the fire extinguishing water.
It has a fire extinguishing water discharge valve that discharges a part of the fire extinguishing water flowing through the fire extinguishing water line to the outside.
The fire extinguishing water discharge valve opens and closes based on the pressure P1 of the fire extinguishing agent line or the pressure P2 of the secondary side of the proportioner in the fire extinguishing water line to control the pressure on the secondary side. It is characterized in that the mixing ratio of the fire extinguishing agent to the fire extinguishing water is maintained within a predetermined range.

(3)また、上記(2)に記載のものにおいて、前記消火水放出弁は、前記消火薬剤ラインの圧力と、前記消火水ラインにおける前記プロポーショナーの二次側の消火水とを導入して、前記導入した消火薬剤ラインの圧力に基づいて前記導入した消火水の外部への放出を制御する制御弁であることを特徴とするものである。 (3) Further, in the above-mentioned (2), the fire extinguishing water discharge valve introduces the pressure of the fire extinguishing agent line and the fire extinguishing water on the secondary side of the proportioner in the fire extinguishing water line. It is a control valve that controls the discharge of the introduced fire extinguishing water to the outside based on the pressure of the introduced fire extinguishing agent line.

(4)また、上記(3)に記載のものにおいて、前記制御弁は、前記消火薬剤ラインと連通する第1室と、前記消火水が導入される第2室と、該第2室を消火水が導入される消火水導入室と消火水を外部に排出するための排出口が設けられた排出室とに仕切る弁体と、前記第1室に導入された消火薬剤の圧力に基づいて前記弁体を開閉させる弁作動機構とを備えたことを特徴とするものである。 (4) Further, in the one described in (3) above, the control valve extinguishes the first chamber communicating with the fire extinguishing agent line, the second chamber into which the fire extinguishing water is introduced, and the second chamber. The valve body that divides the fire extinguishing water introduction chamber into which water is introduced and the discharge chamber provided with a discharge port for discharging the fire extinguishing water to the outside, and the pressure of the fire extinguishing agent introduced into the first chamber. It is characterized by having a valve operating mechanism for opening and closing the valve body.

(5)また、上記(2)に記載のものにおいて、前記消火水放出弁は、前記消火水ラインにおける前記プロポーショナーの二次側の消火水を導入して、該導入した消火水の圧力に基づいて該導入した消火水の外部への放出を制御する制御弁であることを特徴とするものである。 (5) Further, in the one described in (2) above, the fire extinguishing water discharge valve introduces the fire extinguishing water on the secondary side of the proportioner in the fire extinguishing water line to the pressure of the introduced fire extinguishing water. Based on this, it is a control valve that controls the discharge of the introduced fire extinguishing water to the outside.

(6)また、上記(5)に記載のものにおいて、前記制御弁は、前記消火水が導入される消火水導入室と、該消火水導入室に導入された消火水を外部に排出するための排出口と、前記消火水導入室に導入された消火水の圧力に基づいて前記排出口の開閉を行う弁作動機構とを備えたことを特徴とするものである。 (6) Further, in the one described in (5) above, the control valve discharges the fire extinguishing water introduced into the fire extinguishing water introduction chamber and the fire extinguishing water introduced into the fire extinguishing water introduction chamber to the outside. It is characterized by being provided with a discharge port of the above and a valve operating mechanism for opening and closing the discharge port based on the pressure of the fire extinguishing water introduced into the fire extinguishing water introduction chamber.

(7)また、上記(2)に記載のものにおいて、前記消火水放出弁は、上記(3)乃至(6)のいずれか一項に記載の制御弁と、該制御弁をパイロット弁として開閉する一斉開放弁とを備えてなることを特徴とするものである。 (7) Further, in the one described in (2) above, the fire extinguishing water discharge valve opens and closes with the control valve according to any one of (3) to (6) above and the control valve as a pilot valve. It is characterized by being equipped with a simultaneous release valve.

本発明においては、消火水ラインを流れる消火水の一部を外部に放出する消火水放出弁を設けたことにより、前記二次側の圧力が上昇した場合に、前記消火水放出弁を開放することで、前記二次側の圧力を所定値に制御できるので、泡ヘッドにゴミが詰まる等の不具合が生じたときにも所定の混合比を維持することができ、泡消火としての機能を維持することができる。 In the present invention, by providing the fire extinguishing water discharge valve that discharges a part of the fire extinguishing water flowing through the fire extinguishing water line to the outside, the fire extinguishing water discharge valve is opened when the pressure on the secondary side rises. As a result, the pressure on the secondary side can be controlled to a predetermined value, so that the predetermined mixing ratio can be maintained even when a problem such as clogging of the foam head with dust occurs, and the function as a foam fire extinguishing is maintained. can do.

本発明の実施の形態1に係る泡消火設備の説明図である。It is explanatory drawing of the foam fire extinguishing equipment which concerns on Embodiment 1 of this invention. ラインプロポーショナーにおける二次側の圧力と混合比との関係の一例を示すグラフである。It is a graph which shows an example of the relationship between the pressure on the secondary side and a mixture ratio in a line proportioner. 図1に示した泡消火設備の他の態様の説明図である(その1)。It is explanatory drawing of another embodiment of the foam fire extinguishing system shown in FIG. 1 (No. 1). 図1に示した泡消火設備の他の態様の説明図である(その2)。It is explanatory drawing of another embodiment of the foam fire extinguishing system shown in FIG. 1 (No. 2). 図1に示した泡消火設備の他の態様の説明図である(その3)。It is explanatory drawing of another embodiment of the foam fire extinguishing system shown in FIG. 1 (No. 3). 本発明の実施の形態2に係る泡消火設備の説明図である。It is explanatory drawing of the foam fire extinguishing equipment which concerns on Embodiment 2 of this invention. 図6に示した泡消火設備の動作説明図である。It is an operation explanatory diagram of the foam fire extinguishing equipment shown in FIG. 本発明の実施の形態3に係る泡消火設備の説明図である。It is explanatory drawing of the foam fire extinguishing equipment which concerns on Embodiment 3 of this invention. 図8に示した泡消火設備の動作説明図である。It is an operation explanatory diagram of the foam fire extinguishing equipment shown in FIG. 本発明の実施の形態4に係る泡消火設備の説明図である。It is explanatory drawing of the foam fire extinguishing equipment which concerns on Embodiment 4 of this invention. 図10に示した泡消火設備の動作説明図である。It is an operation explanatory diagram of the foam fire extinguishing equipment shown in FIG. 本発明の実施の形態5に係る泡消火設備の説明図である。It is explanatory drawing of the foam fire extinguishing equipment which concerns on Embodiment 5 of this invention. 図12に示した泡消火設備の動作説明図である。It is operation | movement explanatory drawing of the foam fire extinguishing equipment shown in FIG.

[実施の形態1]
以下においては、消火設備として、水と消火薬剤を混合し、泡を発生させて消火を行う泡消火設備を例に挙げて説明するが、本発明に係る消火設備は泡消火設備に限られず、上述した閉鎖型噴霧消火設備を含む。
[Embodiment 1]
In the following, as the fire extinguishing equipment, a foam fire extinguishing equipment in which water and a fire extinguishing agent are mixed to generate bubbles to extinguish the fire will be described as an example, but the fire extinguishing equipment according to the present invention is not limited to the foam fire extinguishing equipment. Includes the closed spray fire extinguishing equipment mentioned above.

本実施の形態に係る泡消火設備1は、図1に示すように、消火水が流れる消火水ライン3と、消火薬剤を貯留する消火薬剤容器5と、消火薬剤容器5内の消火薬剤を消火水ライン3側に供給する消火薬剤ライン7と、消火薬剤ライン7と消火水ライン3との間に設けられて消火水に消火薬剤を混合するラインプロポーショナー9と、を備えたものである。
そして、消火薬剤ライン7の圧力P1を検知する検知手段としての第1圧力検知手段11と、消火水ライン3におけるラインプロポーショナー9の二次側の圧力P2を検知する検知手段としての第2圧力検知手段13と、消火水ライン3におけるラインプロポーショナー9の二次側を流れる消火水の一部を外部に放出する消火水放出弁15とを備えている。
以下、各構成を詳細に説明する。
As shown in FIG. 1, the foam fire extinguishing equipment 1 according to the present embodiment extinguishes a fire extinguishing water line 3 through which fire extinguishing water flows, a fire extinguishing agent container 5 for storing a fire extinguishing agent, and a fire extinguishing agent in the extinguishing agent container 5. It is provided with a fire extinguishing agent line 7 supplied to the water line 3 side and a line proportioner 9 provided between the fire extinguishing agent line 7 and the fire extinguishing water line 3 to mix the extinguishing agent with the extinguishing water.
Then, the first pressure detecting means 11 as a detecting means for detecting the pressure P1 of the fire extinguishing agent line 7 and the second pressure as a detecting means for detecting the pressure P2 on the secondary side of the line proportioner 9 in the fire extinguishing water line 3. The detection means 13 and a fire extinguishing water discharge valve 15 for discharging a part of the fire extinguishing water flowing on the secondary side of the line proportioner 9 in the fire extinguishing water line 3 to the outside are provided.
Hereinafter, each configuration will be described in detail.

<消火水ライン>
消火水ライン3は、図示しないポンプによって消火水を供給するラインである。消火水ライン3には、ラインプロポーショナー9が設けられ、ラインプロポーショナー9の一次側にポンプが設けられ、二次側の先端に泡ヘッドが設けられる。
なお、消火水ラインの末端に設けられるものとしては、泡ヘッドの他に、閉鎖型噴霧ヘッド、泡消火栓、高発泡泡発生機、フォームメイクチャンバーなどがある。
<Fire extinguishing water line>
The fire extinguishing water line 3 is a line for supplying fire extinguishing water by a pump (not shown). The fire extinguishing water line 3 is provided with a line proportioner 9, a pump is provided on the primary side of the line proportioner 9, and a foam head is provided at the tip of the secondary side.
In addition to the foam head, there are a closed spray head, a foam fire hydrant, a highly foamed foam generator, a foam make chamber, and the like provided at the end of the fire extinguishing water line.

<消火薬剤容器>
消火薬剤容器5は、圧力容器ではない大気開放型の容器である。
<Fire extinguishing agent container>
The fire extinguishing agent container 5 is not a pressure vessel but an open-air container.

<消火薬剤ライン>
消火薬剤ライン7は、消火薬剤容器5内の消火薬剤を消火水ライン3側に供給するラインである。消火薬剤ライン7には、自吸によってラインプロポーショナー9に供給される消火薬剤の流量を調整するためのオリフィス17が設けられている。
<Fire extinguishing agent line>
The fire extinguishing agent line 7 is a line for supplying the fire extinguishing agent in the extinguishing agent container 5 to the fire extinguishing water line 3 side. The fire extinguishing agent line 7 is provided with an orifice 17 for adjusting the flow rate of the extinguishing agent supplied to the line proportioner 9 by self-priming.

<ラインプロポーショナー>
ラインプロポーショナー9は、消火薬剤ライン7と消火水ライン3との間に設けられて消火水に消火薬剤を混合するためのものである。
ラインプロポーショナー9は、消火水を導入する導入路9aと、導入路9aに連続して導入路9aよりも縮径したのど部9bと、のど部9bに連続して形成され下流側に向かって拡径する拡径路9cと、のど部9bに薬剤を供給する薬剤供給部9dとを備えている。
<Line proportioner>
The line proportioner 9 is provided between the fire extinguishing agent line 7 and the fire extinguishing water line 3 for mixing the extinguishing agent with the extinguishing water.
The line proportioner 9 is continuously formed in the introduction path 9a into which the fire extinguishing water is introduced, the throat portion 9b which is continuously reduced in diameter from the introduction path 9a, and the throat portion 9b, and is formed toward the downstream side. It is provided with a diameter-expanding path 9c for expanding the diameter and a drug supply section 9d for supplying the drug to the throat section 9b.

ラインプロポーショナー9においては、所定の圧力の消火水が導入路に供給されると、消火水の流速がのど部9bで速くなり、エゼクター効果によってのど部9bに負圧が生ずる。この負圧によって、消火薬剤ライン7を介して消火薬剤容器5に貯留されている消火薬剤が吸引され、のど部9bに供給されて消火水と混合される。混合液は拡径路9cを通過する際に流速が低下して圧力を回復して下流側の泡ヘッドへと送出される。 In the line proportioner 9, when the fire extinguishing water of a predetermined pressure is supplied to the introduction path, the flow velocity of the fire extinguishing water becomes faster in the throat portion 9b, and a negative pressure is generated in the throat portion 9b due to the ejector effect. Due to this negative pressure, the fire extinguishing agent stored in the extinguishing agent container 5 is sucked through the extinguishing agent line 7, supplied to the throat portion 9b, and mixed with the extinguishing water. When the mixed liquid passes through the expansion path 9c, the flow velocity decreases, the pressure is restored, and the mixed liquid is sent to the foam head on the downstream side.

図2は、消火薬剤ライン7におけるオリフィス17の下流側の圧力P1とラインプロポーショナー9の二次側の圧力P2との関係、及び消火水と消火薬剤の混合比と圧力P2との関係を示すグラフである。
図2に示すように、この例では、圧力P2が0.5MPa〜0.85MPaでは、混合比はほぼ一定(約4.2%)であるが、圧力P2が0.85MPaを超えて上昇すると、これに従って混合比が低下することがわかる。なお、本実施例のラインプロポーショナー9の設定混合比は、3.5〜4.5%であり、0.95MPaを超えると混合比が設定値を下回り、所定の発泡倍率を得られない恐れがある。
このように、圧力P2が上昇した場合には、これを低下させて0.5MPa〜0.95MPaの範囲内にすることが混合比を所定値に維持するために重要であることがわかる。
FIG. 2 shows the relationship between the pressure P1 on the downstream side of the orifice 17 in the fire extinguishing agent line 7 and the pressure P2 on the secondary side of the line proportioner 9, and the relationship between the mixing ratio of the extinguishing water and the extinguishing agent and the pressure P2. It is a graph.
As shown in FIG. 2, in this example, when the pressure P2 is 0.5 MPa to 0.85 MPa, the mixing ratio is almost constant (about 4.2%), but when the pressure P2 rises above 0.85 MPa, the mixing ratio is accordingly. It can be seen that The set mixing ratio of the line proportioner 9 of this embodiment is 3.5 to 4.5%, and if it exceeds 0.95 MPa, the mixing ratio may fall below the set value and a predetermined foaming ratio may not be obtained.
As described above, when the pressure P2 rises, it is important to lower the pressure P2 so as to be in the range of 0.5 MPa to 0.95 MPa in order to maintain the mixing ratio at a predetermined value.

<第1圧力検知手段>
第1圧力検知手段11は、消火薬剤ライン7の圧力P1を検知するものであり、圧力を目視確認可能なもの、検知した圧力を制御信号として送信可能なもの等を用いることができる。
<First pressure detecting means>
The first pressure detecting means 11 detects the pressure P1 of the fire extinguishing agent line 7, and can use one that can visually confirm the pressure, one that can transmit the detected pressure as a control signal, and the like.

<第2圧力検知手段>
第2圧力検知手段13は、ラインプロポーショナー9の二次側の圧力P2を検知するものであり、第1圧力検知手段11と同様に、圧力を目視確認可能なもの、検知した圧力を制御信号として送信可能なもの等を用いることができる。
<Second pressure detecting means>
The second pressure detecting means 13 detects the pressure P2 on the secondary side of the line proportioner 9, and like the first pressure detecting means 11, the pressure can be visually confirmed and the detected pressure is controlled. It is possible to use something that can be transmitted as.

<消火水放出弁>
消火水放出弁15は、消火水ライン3におけるラインプロポーショナー9の二次側を流れる消火水の一部を外部に放出するための弁であり、手動弁、自動弁等を用いることができ、放水量は調整可能である。
消火水放出弁15は、泡ヘッドにゴミが詰まる等によりラインプロポーショナー9の二次側の圧力P2が上昇した場合に、圧力P2を正常な状態の圧力にするために使用するものである。そのため、想定される異常時による圧力上昇分の消火水を放水可能な弁である必要があり、放水可能量は、消火水ライン3の流量、圧力等及び想定される圧力上昇に基づいて設定され、放水可能量の範囲内で放水量を調整できる。
<Fire extinguishing water discharge valve>
The fire extinguishing water discharge valve 15 is a valve for discharging a part of the fire extinguishing water flowing on the secondary side of the line proportioner 9 in the fire extinguishing water line 3 to the outside, and a manual valve, an automatic valve, or the like can be used. The amount of water discharged is adjustable.
The fire extinguishing water discharge valve 15 is used to bring the pressure P2 into a normal state when the pressure P2 on the secondary side of the line proportioner 9 rises due to clogging of the foam head with dust or the like. Therefore, it is necessary to use a valve that can discharge the fire extinguishing water corresponding to the pressure increase due to the assumed abnormal time, and the water dischargeable amount is set based on the flow rate, pressure, etc. of the fire extinguishing water line 3 and the assumed pressure increase. , The amount of water discharged can be adjusted within the range of the amount of water that can be discharged.

上記のように構成された本実施の形態において、消火水放出弁15が手動弁の場合を例に挙げて動作説明をする。
ポンプによって消火水ライン3に供給された消火水によってラインプロポーショナー9において消火薬剤が自吸されて消火水と混合され、所定の圧力で泡ヘッドに混合液が供給されて泡が発生する。
In the present embodiment configured as described above, the operation will be described by taking the case where the fire extinguishing water discharge valve 15 is a manual valve as an example.
The fire extinguishing agent supplied to the fire extinguishing water line 3 by the pump self-sucks the fire extinguishing agent in the line proportioner 9 and mixes with the fire extinguishing water, and the mixed liquid is supplied to the foam head at a predetermined pressure to generate bubbles.

泡ヘッドにゴミが詰まる等により、ラインプロポーショナー9の二次側の圧力P2が上昇すると、自吸力(負圧として第1圧力検知手段11が検知)が低下するため消火薬剤ライン7の圧力P1も上昇する。作業者が第1圧力検知手段11又は第2圧力検知手段13の圧力を目視で確認して、例えば図2に示したように、混合比が低下する程度まで圧力P2が上昇した場合、あるいは上昇しそうな場合には、消火水放出弁15を開放する。消火水放出弁15を開放することで、圧力P2が低下し、所定の圧力を維持できるようになれば、消火水放出弁15の開度をそれに維持するようにする。
これによって、混合比が所定の範囲に維持される。
When the pressure P2 on the secondary side of the line proportioner 9 rises due to the foam head being clogged with dust or the like, the self-priming force (detected by the first pressure detecting means 11 as a negative pressure) decreases, so the pressure P1 of the fire extinguishing agent line 7 Also rises. The operator visually confirms the pressure of the first pressure detecting means 11 or the second pressure detecting means 13, and when the pressure P2 rises or rises to the extent that the mixing ratio decreases, for example, as shown in FIG. If this is the case, the fire extinguishing water discharge valve 15 is opened. When the pressure P2 is lowered by opening the fire extinguishing water discharge valve 15 and a predetermined pressure can be maintained, the opening degree of the fire extinguishing water discharge valve 15 is maintained.
As a result, the mixing ratio is maintained within a predetermined range.

なお、上記の実施の形態では、圧力P1を検知する第1圧力検知手段11と、圧力P2を検知する第2圧力検知手段13の両方を備えた例を示したが、本発明においては、これらは両方を備えることは必須ではなく、いずれか一方でもよい。 In the above embodiment, an example including both the first pressure detecting means 11 for detecting the pressure P1 and the second pressure detecting means 13 for detecting the pressure P2 is shown, but in the present invention, these are shown. It is not essential to have both, but either one may be used.

また、上記の実施の形態では、消火水放出弁15を手動で開閉するものであったが、図3に示すように、消火水放出弁15を自動弁として、消火薬剤ライン7の圧力P1を検知する第1圧力検知手段11を圧力センサとし、該圧力センサの検知信号に基づいて開閉するようにしてもよい。
また、図4に示すように、ラインプロポーショナー9の二次側の圧力P2を検知する第2圧力検知手段13を圧力センサとし、消火水放出弁15は、該圧力センサの検知信号に基づいて開閉するようにしてもよい。
Further, in the above embodiment, the fire extinguishing water discharge valve 15 is manually opened and closed, but as shown in FIG. 3, the fire extinguishing water discharge valve 15 is used as an automatic valve, and the pressure P1 of the fire extinguishing agent line 7 is applied. The first pressure detecting means 11 to be detected may be a pressure sensor, and may be opened and closed based on the detection signal of the pressure sensor.
Further, as shown in FIG. 4, the second pressure detecting means 13 for detecting the pressure P2 on the secondary side of the line proportioner 9 is used as a pressure sensor, and the fire extinguishing water discharge valve 15 is based on the detection signal of the pressure sensor. It may be opened and closed.

さらに、図5に示すように、消火薬剤ライン7におけるオリフィス17の下流側に流量を検知する検知手段としての流量検知手段19を設け、流量検知手段19の信号を消火水放出弁15に入力して、消火薬剤ライン7の流量が所定の流量よりも低下した場合に消火水放出弁15を開放するようにしてもよい。なお、流量検知手段19が水流の向きも検知できるものの場合、第1圧力検知手段11、第2圧力検知手段13のいずれも設けないものとすることができる。 Further, as shown in FIG. 5, a flow rate detecting means 19 as a detecting means for detecting the flow rate is provided on the downstream side of the orifice 17 in the fire extinguishing agent line 7, and the signal of the flow rate detecting means 19 is input to the fire extinguishing water discharge valve 15. The fire extinguishing water discharge valve 15 may be opened when the flow rate of the fire extinguishing agent line 7 is lower than the predetermined flow rate. If the flow rate detecting means 19 can also detect the direction of the water flow, neither the first pressure detecting means 11 nor the second pressure detecting means 13 can be provided.

[実施の形態2]
実施の形態1において消火水放出弁15を自動弁とする場合には、圧力P1、圧力P2又は消火薬剤ライン7の流量を検知して、検知信号に基づいて開閉するものであったが、本実施の形態では、圧力や流量を検知する検知手段を別途設けることなく、消火水放出弁15を、消火薬剤ライン7の圧力P1に基づいて開閉して、ラインプロポーショナー9の二次側の圧力P2を制御する制御弁にしたものである。
以下、本実施の形態の泡消火設備21を、図6に基づいて説明する。
なお、図6において、図1と同一部分には同一の符号を付して説明を省略し、以下においては、本実施の形態の特徴である制御弁23について説明する。
[Embodiment 2]
In the case where the fire extinguishing water discharge valve 15 is an automatic valve in the first embodiment, the flow rate of the pressure P1, the pressure P2 or the fire extinguishing agent line 7 is detected and the fire extinguishing water discharge valve 15 is opened and closed based on the detection signal. In the embodiment, the fire extinguishing water discharge valve 15 is opened and closed based on the pressure P1 of the fire extinguishing agent line 7 without separately providing a detecting means for detecting the pressure and the flow rate, and the pressure on the secondary side of the line proportioner 9 is opened and closed. It is a control valve that controls P2.
Hereinafter, the foam fire extinguishing equipment 21 of the present embodiment will be described with reference to FIG.
In FIG. 6, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. Hereinafter, the control valve 23, which is a feature of the present embodiment, will be described.

<制御弁>
制御弁23は、図6に示すように、弁箱25内において、消火薬剤ライン7と連通する第1室27と、ラインプロポーショナー9の二次側の消火水が導入される第2室29と、第2室29を消火水が導入される消火水導入室31と消火水を外部に排出するための排出口33が設けられた排出室35とに仕切る弁体37と、消火薬剤ライン7と連通した第1室27の圧力、より厳密には圧力バランスに基づいて弁体37を開閉させる弁作動機構39とを備えている。
<Control valve>
As shown in FIG. 6, the control valve 23 has a first chamber 27 communicating with the fire extinguishing agent line 7 and a second chamber 29 into which the fire extinguishing water on the secondary side of the line proportioner 9 is introduced in the valve box 25. A valve body 37 that divides the second chamber 29 into a fire extinguishing water introduction chamber 31 into which the fire extinguishing water is introduced and a discharge chamber 35 provided with a discharge port 33 for discharging the fire extinguishing water to the outside, and a fire extinguishing agent line 7. It is provided with a valve operating mechanism 39 that opens and closes the valve body 37 based on the pressure of the first chamber 27, more precisely, the pressure balance.

弁作動機構39は、第1室27を消火薬剤ライン7と連通する連通室41と大気圧となる大気圧室43とに仕切るダイヤフラム45と、ダイヤフラム45の中央部に設けられてダイヤフラム45を支持するダイヤフラム受け47と、ダイヤフラム受け47を下方に付勢する第1スプリング49と、ボルト受け51によって第1スプリング49に当接して第1スプリング49の付勢力を調節する調節ボルト53と、一端がダイヤフラム受け47に接続されると共に他端に弁体37が取り付けられたステム55と、弁体37を上方に付勢する第2スプリング57とを備えている。
なお、連通室41には、室内のゴミ等を排出するためのフラッシング弁59が設けられている。
The valve operating mechanism 39 supports a diaphragm 45 that divides the first chamber 27 into a communication chamber 41 that communicates with the fire extinguishing agent line 7 and an atmospheric pressure chamber 43 that becomes atmospheric pressure, and a diaphragm 45 provided in the center of the diaphragm 45. A diaphragm receiver 47, a first spring 49 that urges the diaphragm receiver 47 downward, an adjustment bolt 53 that abuts on the first spring 49 by the bolt receiver 51 and adjusts the urging force of the first spring 49, and one end thereof. It includes a stem 55 that is connected to the diaphragm receiver 47 and has a valve body 37 attached to the other end, and a second spring 57 that urges the valve body 37 upward.
The communication room 41 is provided with a flushing valve 59 for discharging dust and the like in the room.

上記のように構成された制御弁23において、正常時においては、消火薬剤ライン7の圧力P1が負圧となるので、連通室41も負圧となり、ダイヤフラム45は図中上方に引き上げられる。そのため、ダイヤフラム受け47も引き上げられ、ステム55が上方に移動することで弁体37が弁座61に着座して第2室29は弁体37で仕切られた状態となっている。この状態では、第2室29における消火水導入室31の消火水は排出室35側に流入することはなく、消火水ライン3の消火水は排水されない。
このような正常時には、消火薬剤容器5の消火薬剤がラインプロポーショナー9に規定量吸入され、所定の混合比が得られる。
In the control valve 23 configured as described above, in the normal state, the pressure P1 of the fire extinguishing agent line 7 becomes a negative pressure, so that the communication chamber 41 also becomes a negative pressure, and the diaphragm 45 is pulled up in the figure. Therefore, the diaphragm receiver 47 is also pulled up, and the stem 55 moves upward so that the valve body 37 is seated on the valve seat 61 and the second chamber 29 is partitioned by the valve body 37. In this state, the fire extinguishing water of the fire extinguishing water introduction chamber 31 in the second chamber 29 does not flow into the discharge chamber 35 side, and the fire extinguishing water of the fire extinguishing water line 3 is not drained.
Under such normal conditions, the fire extinguishing agent in the fire extinguishing agent container 5 is inhaled into the line proportioner 9 in a specified amount, and a predetermined mixing ratio is obtained.

泡ヘッドがゴミで詰まる等してラインプロポーショナー9の二次側の圧力P2が高くなると、ラインプロポーショナー9による吸引力が低下して、消火薬剤ライン7の圧力P1が高くなる。この状態で、圧力P2が所定の値を超えると、所定の混合比が得られなくなる。
しかし、圧力P1が高くなることで、連通室41の圧力が上昇し、第1スプリング49による付勢力と連通室41の圧力の合力が所定の圧力以上になると、ダイヤフラム45が図中下方に押し下げられる。このため、ダイヤフラム受け47も押し下げられ、ステム55が下方に移動して、図7に示すように、弁体37が弁座61から離れて、消火水導入室31と排出室35が連通する。これにより、消火水導入室31の消火水が排出室35に流入して、排出口33から排水される。
When the pressure P2 on the secondary side of the line proportioner 9 becomes high due to the foam head being clogged with dust or the like, the suction force by the line proportioner 9 decreases and the pressure P1 of the fire extinguishing agent line 7 becomes high. If the pressure P2 exceeds a predetermined value in this state, a predetermined mixing ratio cannot be obtained.
However, as the pressure P1 increases, the pressure in the communication chamber 41 rises, and when the resultant force of the urging force by the first spring 49 and the pressure in the communication chamber 41 exceeds a predetermined pressure, the diaphragm 45 pushes down in the figure. Be done. Therefore, the diaphragm receiver 47 is also pushed down, the stem 55 moves downward, the valve body 37 is separated from the valve seat 61, and the fire extinguishing water introduction chamber 31 and the discharge chamber 35 communicate with each other, as shown in FIG. As a result, the fire extinguishing water of the fire extinguishing water introduction chamber 31 flows into the discharge chamber 35 and is drained from the discharge port 33.

消火水の排水により、ラインプロポーショナー9の二次側の消火水の流れが別途生ずることで、圧力P2が低下し、圧力P1も低下する。これにより、正常時と同様に消火薬剤ライン7における消火薬剤の吸引が所定値で行われるので、所定の混合比が維持される。
なお、圧力P1が低下すると、ステム55が上動して弁体37が弁座61に着座して、消火水の排水が停止するため、この状態で再び圧力P2が所定値より上昇すると、上記の動作を繰り返す。制御弁23は、この動作の繰り返しにより弁体37と弁座61で形成する隙間(オリフィス)が、圧力P1が所定の圧力となる開度でつり合うように設計されている。このように、圧力P2の変化に応じて制御弁23が上記の動作を繰り返すことで、圧力P2を所定の範囲に維持して、混合比を所定値に維持することができる。
Due to the drainage of the fire extinguishing water, the flow of the fire extinguishing water on the secondary side of the line proportioner 9 is separately generated, so that the pressure P2 is lowered and the pressure P1 is also lowered. As a result, the fire extinguishing agent is sucked at the predetermined value in the fire extinguishing agent line 7 as in the normal state, so that the predetermined mixing ratio is maintained.
When the pressure P1 decreases, the stem 55 moves upward, the valve body 37 sits on the valve seat 61, and the drainage of the fire extinguishing water stops. Therefore, when the pressure P2 rises again from the predetermined value in this state, the above Repeat the operation of. The control valve 23 is designed so that the gap (orifice) formed by the valve body 37 and the valve seat 61 by repeating this operation is balanced at an opening degree at which the pressure P1 becomes a predetermined pressure. In this way, by repeating the above operation of the control valve 23 in response to the change in the pressure P2, the pressure P2 can be maintained in a predetermined range and the mixing ratio can be maintained at a predetermined value.

以上のように、本実施の形態によれば、実施の形態1のように検知手段を設けることなく、制御弁23の作動で混合比を所定値に維持することができる。 As described above, according to the present embodiment, the mixing ratio can be maintained at a predetermined value by operating the control valve 23 without providing the detection means as in the first embodiment.

なお、弁体37に傾斜を付ける等によって、弁体37の開度によって排水量を緻密に調整できるようにすれば、混合比の維持をより緻密に速やかに行うことができる。
また、上記の実施の形態においては、制御弁23として、消火薬剤ライン7と連通する第1室27と、消火水が導入される第2室29と、第2室29を消火水が導入される消火水導入室31と消火水を外部に排出するための排出口33が設けられた排出室35とに仕切る弁体37と、第1室27に導入された消火薬剤の圧力に基づいて弁体37を開閉させる弁作動機構39とを備えたものを例示したが、本発明に係る制御弁23はこれに限定されるものではなく、消火薬剤ライン7の圧力と、消火水ライン3におけるラインプロポーショナー9の二次側の消火水とを導入して、導入した消火薬剤ライン7の圧力に基づいて導入した消火水の外部への放出を制御するものであればよい。
If the amount of drainage can be finely adjusted according to the opening degree of the valve body 37 by inclining the valve body 37 or the like, the mixing ratio can be maintained more precisely and quickly.
Further, in the above embodiment, as the control valve 23, the fire extinguishing water is introduced into the first room 27 communicating with the fire extinguishing agent line 7, the second room 29 into which the fire extinguishing water is introduced, and the second room 29. A valve body 37 that divides the fire extinguishing water introduction chamber 31 into a discharge chamber 35 provided with a discharge port 33 for discharging the fire extinguishing water to the outside, and a valve based on the pressure of the fire extinguishing agent introduced into the first chamber 27. Although an example is provided with a valve operating mechanism 39 for opening and closing the body 37, the control valve 23 according to the present invention is not limited to this, and the pressure of the fire extinguishing agent line 7 and the line in the fire extinguishing water line 3 are limited to this. The fire extinguishing water on the secondary side of the proportioner 9 may be introduced to control the discharge of the introduced fire extinguishing water to the outside based on the pressure of the introduced fire extinguishing agent line 7.

[実施の形態3]
実施の形態2の消火水放出弁は、消火薬剤ライン7の圧力P1に基づいて、ラインプロポーショナー9の二次側の消火水を排水することで、圧力P2の上昇を抑制する制御弁23であったが、本実施の形態における泡消火設備63の消火水放出弁は、消火水ライン3におけるラインプロポーショナー9の二次側の消火水を導入して、導入した消火水の圧力に基づいて導入した消火水の外部への放出を制御する制御弁65である。
制御弁65の具体的な構造を図8に基づいて説明する。なお、図8において、図6に示した制御弁23と同一の機能を有する部分には同一の符号を付してある。
本実施の形態の制御弁65は、図8に示すように、弁箱25内において、消火水ライン3と連通して消火水が導入される消火水導入室31と、消火水導入室31に導入された消火水を外部に排出するための排出口33と、消火水導入室31に導入された消火水の圧力に基づいて排出口33の開閉を行う弁作動機構67とを備えたものである。
[Embodiment 3]
The fire extinguishing water discharge valve of the second embodiment is a control valve 23 that suppresses an increase in the pressure P2 by draining the fire extinguishing water on the secondary side of the line proportioner 9 based on the pressure P1 of the fire extinguishing agent line 7. However, the fire extinguishing water discharge valve of the foam fire extinguishing equipment 63 in the present embodiment introduces the fire extinguishing water on the secondary side of the line proportioner 9 in the fire extinguishing water line 3 and is based on the pressure of the introduced fire extinguishing water. It is a control valve 65 that controls the discharge of the introduced fire extinguishing water to the outside.
The specific structure of the control valve 65 will be described with reference to FIG. In FIG. 8, the portions having the same functions as those of the control valve 23 shown in FIG. 6 are designated by the same reference numerals.
As shown in FIG. 8, the control valve 65 of the present embodiment is provided in the fire extinguishing water introduction chamber 31 and the fire extinguishing water introduction chamber 31 in which the fire extinguishing water is introduced by communicating with the fire extinguishing water line 3 in the valve box 25. It is equipped with a discharge port 33 for discharging the introduced fire extinguishing water to the outside, and a valve operating mechanism 67 for opening and closing the discharge port 33 based on the pressure of the fire extinguishing water introduced in the fire extinguishing water introduction chamber 31. be.

弁作動機構67は、弁箱25内を消火水導入室31と大気圧となる大気圧室43とに仕切るダイヤフラム45と、ダイヤフラム45の中央部に設けられてダイヤフラム45を支持するダイヤフラム受け47と、ダイヤフラム受け47を下方に付勢する第1スプリング49と、ボルト受け51によって第1スプリング49に当接して第1スプリング49の付勢力を調節する調節ボルト53と、一端がダイヤフラム受け47に取り付けられると共に他端が排出口33に離接可能な弁体部69aを有するステム69とを備えている。
消火水導入室31には、室内のゴミ等を排出するためのフラッシング弁59が設けられている。
The valve operating mechanism 67 includes a diaphragm 45 that divides the inside of the valve box 25 into a fire extinguishing water introduction chamber 31 and an atmospheric pressure chamber 43 that becomes atmospheric pressure, and a diaphragm receiving 47 provided in the center of the diaphragm 45 to support the diaphragm 45. A first spring 49 that urges the diaphragm receiver 47 downward, an adjustment bolt 53 that abuts on the first spring 49 by the bolt receiver 51 to adjust the urging force of the first spring 49, and one end attached to the diaphragm receiver 47. The other end is provided with a stem 69 having a valve body portion 69a that can be detached from the discharge port 33.
The fire extinguishing water introduction chamber 31 is provided with a flushing valve 59 for discharging dust and the like in the room.

上記のように構成された制御弁65において、正常時においては、消火水ライン3の圧力P2が消火水導入室31に導入され、この圧力がダイヤフラム45を押し上げる方向に作用するが、この力よりも第1スプリング49がダイヤフラム受け47を押し下げる力の方が大きいので、ステム69が押し下げられた状態を維持し、排出口33が弁体部69aで閉止されている。そのため、消火水導入室31に導入された消火水は排水されない。
このような正常時には、消火薬剤容器5の消火薬剤がラインプロポーショナー9に規定量吸入され、所定の混合比が得られる。
In the control valve 65 configured as described above, under normal conditions, the pressure P2 of the fire extinguishing water line 3 is introduced into the fire extinguishing water introduction chamber 31, and this pressure acts in the direction of pushing up the diaphragm 45. However, since the force of the first spring 49 pushing down the diaphragm receiver 47 is larger, the stem 69 is maintained in the pushed down state, and the discharge port 33 is closed by the valve body portion 69a. Therefore, the fire extinguishing water introduced into the fire extinguishing water introduction room 31 is not drained.
Under such normal conditions, the fire extinguishing agent in the fire extinguishing agent container 5 is inhaled into the line proportioner 9 in a specified amount, and a predetermined mixing ratio is obtained.

泡ヘッドがゴミで詰まる等してラインプロポーショナー9の二次側の圧力P2が高くなると、ラインプロポーショナー9による吸引力が低下して、消火薬剤ライン7の圧力P1が高くなる。この状態で、圧力P2が所定の値を超えると、所定の混合比が得られなくなる。
しかし、圧力P2が高くなることで、ダイヤフラム45を押し上げる力が、第1スプリング49がダイヤフラム受け47を押し下げる力よりも大きくなると、ダイヤフラム受け47が上方に移動して、図9に示すように、弁体部69aが排出口33から離れて、排出口33が開口され消火水導入室31から排水される。
When the pressure P2 on the secondary side of the line proportioner 9 becomes high due to the foam head being clogged with dust or the like, the suction force by the line proportioner 9 decreases and the pressure P1 of the fire extinguishing agent line 7 becomes high. If the pressure P2 exceeds a predetermined value in this state, a predetermined mixing ratio cannot be obtained.
However, when the force for pushing up the diaphragm 45 becomes larger than the force for pushing down the diaphragm receiver 47 due to the increase in the pressure P2, the diaphragm receiver 47 moves upward and as shown in FIG. The valve body portion 69a is separated from the discharge port 33, the discharge port 33 is opened, and drainage is performed from the fire extinguishing water introduction chamber 31.

消火水の排水により、ラインプロポーショナー9の二次側の消火水の流れが別途生ずることで、圧力P2が低下し、圧力P2が低下することで消火薬剤ライン7における消火薬剤の吸引が所定値で行われるので、所定の混合比が維持される。
なお、圧力P2が低下すると、ステム69が下動して弁体部69aが排出口33を塞ぎ、消火水の排水が停止する。
このように、圧力P2が変化することで、制御弁65が上記の動作を繰り返し、制御弁65と排出口33が形成する開口(オリフィス)が適切な開度でつり合い、圧力P2を所定の範囲に維持することができ、それによって混合比を所定値に維持することができる。
Due to the drainage of the fire extinguishing water, the flow of the fire extinguishing water on the secondary side of the line proportioner 9 is separately generated, so that the pressure P2 is lowered and the pressure P2 is lowered, so that the suction of the fire extinguishing agent in the fire extinguishing agent line 7 is a predetermined value. Since it is performed in, the predetermined mixing ratio is maintained.
When the pressure P2 drops, the stem 69 moves downward, the valve body portion 69a closes the discharge port 33, and the drainage of the fire extinguishing water stops.
As the pressure P2 changes in this way, the control valve 65 repeats the above operation, the opening (orifice) formed by the control valve 65 and the discharge port 33 is balanced with an appropriate opening, and the pressure P2 is set within a predetermined range. The mixing ratio can be maintained at a predetermined value.

なお、本実施の形態の弁体部69aには傾斜が設けられており、弁体部69aの開度によって排水量がより緻密に調整できるので、混合比の維持をより緻密に速やかに行うことができる。
また、上記の制御弁65は、消火水が導入される消火水導入室31と、消火水導入室31に導入された消火水を外部に排出するための排出口33と、消火水導入室31に導入された消火水の圧力に基づいて排出口33の開閉を行う弁作動機構67とを備えたものであったが、本発明に係る制御弁65はこれに限定されるものではなく、消火水ライン3におけるラインプロポーショナー9の二次側の消火水を導入して、導入した消火水の圧力に基づいて導入した消火水の外部への放出を制御するものであればよい。
The valve body portion 69a of the present embodiment is provided with an inclination, and the amount of drainage can be adjusted more precisely by the opening degree of the valve body portion 69a, so that the mixing ratio can be maintained more precisely and promptly. can.
Further, the control valve 65 has a fire extinguishing water introduction chamber 31 into which the fire extinguishing water is introduced, a discharge port 33 for discharging the fire extinguishing water introduced into the fire extinguishing water introduction chamber 31 to the outside, and a fire extinguishing water introduction chamber 31. Although the control valve 65 according to the present invention is provided with a valve operating mechanism 67 that opens and closes the discharge port 33 based on the pressure of the fire extinguishing water introduced in the above, the control valve 65 according to the present invention is not limited to this and extinguishes a fire. The fire extinguishing water on the secondary side of the line proportioner 9 in the water line 3 may be introduced to control the discharge of the introduced fire extinguishing water to the outside based on the pressure of the introduced fire extinguishing water.

[実施の形態4]
本実施の形態における泡消火設備71は、実施の形態2で用いた制御弁23を一斉開放弁のパイロット弁として機能させるようにしたものであり、換言すれば消火水放出弁を、制御弁23と一斉開放弁によって構成したものである。本実施の形態の消火水放出弁は、泡消火設備が大きく、放出する泡が多量であり、制御弁23による排水量ではラインプロポーショナー9の二次側の圧力P2の上昇を抑えるのに十分でなく、より多量の排水が必要とされる場合に好適なものである。
[Embodiment 4]
The foam fire extinguishing equipment 71 in the present embodiment is such that the control valve 23 used in the second embodiment functions as a pilot valve for the simultaneous release valve, in other words, the fire extinguishing water discharge valve is used as the control valve 23. It is composed of a simultaneous release valve. The fire extinguishing water discharge valve of the present embodiment has a large foam fire extinguishing equipment and a large amount of foam to be discharged, and the amount of drainage by the control valve 23 is sufficient to suppress an increase in the pressure P2 on the secondary side of the line proportioner 9. It is suitable when a larger amount of wastewater is required.

本実施の形態を、図10、図11に基づいて説明する。
なお、図10、図11において、図6、図7と同一部分には同一の符号を付して説明を省略し、以下においては、本実施の形態の特徴である一斉開放弁について説明する。
The present embodiment will be described with reference to FIGS. 10 and 11.
In FIGS. 10 and 11, the same parts as those in FIGS. 6 and 7 are designated by the same reference numerals, and the description thereof will be omitted. Hereinafter, the simultaneous release valve, which is a feature of the present embodiment, will be described.

一斉開放弁73は、弁箱75内に、消火水ライン3におけるラインプロポーショナー9の二次側の消火水が導入される消火水導入室77と、消火水を排出するための排出管79が接続された排出室81と、排出室81と消火水導入室77を仕切る弁体83と、制御弁23の排水が導入されるピストン室85と、ピストン室85に導入された排水量に基づいて弁体83を作動する弁作動機構87とを備えている。
弁作動機構87は、ピストン室85に導入された排水の圧力を受けて作動するピストン89と、一端がピストン89に連結され、他端に弁体83が取り付けられたピストンロッド91とを備えている。
ピストン室85に導入された水は、オリフィス93を介して外部に排出されるようになっている。
The simultaneous release valve 73 has a fire extinguishing water introduction chamber 77 into which the fire extinguishing water on the secondary side of the line proportioner 9 in the fire extinguishing water line 3 is introduced, and a discharge pipe 79 for discharging the fire extinguishing water in the valve box 75. A valve based on the connected discharge chamber 81, the valve body 83 that separates the discharge chamber 81 and the fire extinguishing water introduction chamber 77, the piston chamber 85 into which the drainage of the control valve 23 is introduced, and the amount of drainage introduced into the piston chamber 85. It is provided with a valve operating mechanism 87 that operates the body 83.
The valve operating mechanism 87 includes a piston 89 that operates by receiving the pressure of drainage introduced into the piston chamber 85, and a piston rod 91 having one end connected to the piston 89 and the valve body 83 attached to the other end. There is.
The water introduced into the piston chamber 85 is discharged to the outside through the orifice 93.

以上のように構成された本実施の形態の動作を説明する。なお、制御弁23の動作は実施の形態2と同様なので、以下においては制御弁23の動作説明は省略して、主として一斉開放弁73の動作を説明する。
正常時においては、制御弁23からの排水が無いか、あったとしてもピストン室85からの排水量よりも少ない微量であるため、ピストン89は作動せず、一斉開放弁73の弁体83は閉じた状態を維持する。
The operation of the present embodiment configured as described above will be described. Since the operation of the control valve 23 is the same as that of the second embodiment, the operation description of the control valve 23 will be omitted below, and the operation of the simultaneous release valve 73 will be mainly described.
Under normal conditions, there is no drainage from the control valve 23, or even if there is, the amount of drainage is less than the amount of drainage from the piston chamber 85, so the piston 89 does not operate and the valve body 83 of the simultaneous release valve 73 is closed. Maintain the state.

異常時において、制御弁23からの排水量が、ピストン室85からの排水量を超えてピストン室85に導入されると、図11に示すように、ピストン89が移動して一斉開放弁73の弁体83が開き、消火水が排水室81に流れ、排水管79から排水される。
一斉開放弁73からの排水により、ラインプロポーショナー9の二次側の消火水の流れが別途生ずることで圧力P2が低下し、圧力P2が低下することで消火薬剤ライン7における消火薬剤の吸引が所定値で行われるので、所定の混合比が維持される。
In the event of an abnormality, when the amount of drainage from the control valve 23 exceeds the amount of drainage from the piston chamber 85 and is introduced into the piston chamber 85, the piston 89 moves and the valve body of the simultaneous release valve 73 moves as shown in FIG. 83 opens, fire extinguishing water flows into the drainage chamber 81, and is drained from the drainage pipe 79.
Due to the drainage from the simultaneous release valve 73, the pressure P2 is lowered due to the separate flow of the fire extinguishing water on the secondary side of the line proportioner 9, and the pressure P2 is lowered to suck the fire extinguishing agent in the fire extinguishing agent line 7. Since it is performed at a predetermined value, a predetermined mixing ratio is maintained.

圧力P2が低下すると、制御弁23からの排水が無くなるか少なくなるので、ピストン89が作動して、一斉開放弁73の弁体83が閉じる。
このように、圧力P2の変化に応じて上記の動作を繰り返し、圧力P2を所定の範囲に維持することができ、それによって混合比を所定値に維持することができる。
When the pressure P2 decreases, the drainage from the control valve 23 disappears or decreases, so that the piston 89 operates and the valve body 83 of the simultaneous release valve 73 closes.
In this way, the above operation can be repeated in response to the change in the pressure P2, and the pressure P2 can be maintained within a predetermined range, whereby the mixing ratio can be maintained at a predetermined value.

[実施の形態5]
上述した実施の形態4は、実施の形態2の制御弁をパイロット弁として使用する例であったが、本実施の形態における泡消火設備95は、図12、図13に示すように、実施の形態3の制御弁65を一斉開放弁73のパイロット弁として使用するものである。
図12は正常状態で、図13は異常状態であり、制御弁65の動作は実施の形態3と同様であり、一斉開放弁73の動作は実施の形態4と同じである。
[Embodiment 5]
The above-described fourth embodiment is an example in which the control valve of the second embodiment is used as a pilot valve, but the foam fire extinguishing system 95 in the present embodiment is implemented as shown in FIGS. 12 and 13. The control valve 65 of the third embodiment is used as a pilot valve of the simultaneous release valve 73.
FIG. 12 is a normal state, FIG. 13 is an abnormal state, the operation of the control valve 65 is the same as that of the third embodiment, and the operation of the simultaneous release valve 73 is the same as that of the fourth embodiment.

本実施の形態においても、実施の形態4と同様に、圧力P2を所定の範囲に維持することができ、それによって混合比を所定値に維持することができる。 Also in the present embodiment, as in the fourth embodiment, the pressure P2 can be maintained within a predetermined range, whereby the mixing ratio can be maintained at a predetermined value.

本願の実施の形態は、いずれもラインプロポーショナーを採用した設備に本発明を適用して説明しているが、プロポーショナーとしてベンチュリープロポーショナーやデマンドプロポーショナーを採用した設備においても同様の効果が期待できる。
ベンチュリープロポーショナーやデマンドプロポーショナーは、プロポーショナー自体がある程度の圧力−流量の変化に対応できるように設計されているが、設計範囲を超えて圧力が高くなった場合には、同様の不具合を発生するため本発明が有効である。
また、ベンチュリープロポーショナーやデマンドプロポーショナーを使用する場合には、実施形態3で消火薬剤ライン7の圧力に基づいて制御弁65を開閉していたところを消火薬剤容器5の一次側もしくは二次側の圧力に基づいて開閉するように設定すればよい。
In each of the embodiments of the present application, the present invention is described by applying the present invention to equipment using a line proportioner, but the same effect is expected in equipment using a Venturi proportioner or a demand proportioner as a proportioner. can.
Venturi proportioners and demand proportioners are designed so that the proportioners themselves can respond to certain pressure-flow rate changes, but similar problems occur when the pressure rises beyond the design range. Therefore, the present invention is effective.
Further, when a Venturi proportioner or a demand proportioner is used, the place where the control valve 65 is opened and closed based on the pressure of the fire extinguishing agent line 7 in the third embodiment is the primary side or the secondary side of the fire extinguishing agent container 5. It may be set to open and close based on the pressure of.

1 泡消火設備(実施の形態1)
3 消火水ライン
5 消火薬剤容器
7 消火薬剤ライン
9 ラインプロポーショナー
9a 導入路
9b のど部
9c 拡径路
9d 薬剤供給部
11 第1圧力検知手段
13 第2圧力検知手段
15 消火水放出弁
17 オリフィス
19 流量検知手段
21 泡消火設備(実施の形態2)
23 制御弁
25 弁箱
27 第1室
29 第2室
31 消火水導入室
33 排出口
35 排出室
37 弁体
39 弁作動機構
41 連通室
43 大気圧室
45 ダイヤフラム
47 ダイヤフラム受け
49 第1スプリング
51 ボルト受け
53 調節ボルト
55 ステム
57 第2スプリング
59 フラッシング弁
61 弁座
63 泡消火設備(実施の形態3)
65 制御弁
67 弁作動機構
69 ステム
69a 弁体部
71 泡消火設備(実施の形態4)
73 一斉開放弁
75 弁箱
77 消火水導入室
79 排出管
81 排出室
83 弁体
85 ピストン室
87 弁作動機構
89 ピストン
91 ピストンロッド
93 オリフィス
95 泡消火設備(実施の形態5)
1 Foam fire extinguishing equipment (Embodiment 1)
3 Fire extinguishing water line 5 Fire extinguishing chemical container 7 Fire extinguishing chemical line 9 Line proportioner 9a Introductory path 9b Throat 9c Expansion path 9d Chemical supply section 11 1st pressure detecting means 13 2nd pressure detecting means 15 Fire extinguishing water discharge valve 17 orifice 19 Flow rate Detection means 21 Foam fire extinguishing equipment (Embodiment 2)
23 Control valve 25 Valve box 27 1st room 29 2nd room 31 Fire extinguishing water introduction room 33 Discharge port 35 Discharge room 37 Valve body 39 Valve operating mechanism 41 Communication room 43 Atmospheric pressure room 45 Diaphragm 47 Diaphragm receiver 49 1st spring 51 Bolt Receiving 53 Adjusting bolt 55 Stem 57 Second spring 59 Flushing valve 61 Valve seat 63 Foam fire extinguishing equipment (Embodiment 3)
65 Control valve 67 Valve operating mechanism 69 Stem 69a Valve body 71 Foam fire extinguishing equipment (Embodiment 4)
73 Simultaneous release valve 75 Valve box 77 Fire extinguishing water introduction chamber 79 Discharge pipe 81 Discharge chamber 83 Valve body 85 Piston chamber 87 Valve operating mechanism 89 Piston 91 Piston rod 93 orifice 95 Foam fire extinguishing equipment (Embodiment 5)

Claims (7)

消火水が流れる消火水ラインと、消火薬剤を貯留する消火薬剤容器と、該消火薬剤容器内の消火薬剤を前記消火水ライン側に供給する消火薬剤ラインと、該消火薬剤ラインと前記消火水ラインとの間に設けられて前記消火水に前記消火薬剤を混合するプロポーショナーと、を備えた消火設備であって、
前記消火薬剤ラインの圧力P1、又は前記消火水ラインにおける前記プロポーショナーの二次側の圧力P2、又は消火薬剤ラインの流量を検知する検知手段と、前記消火水ラインを流れる消火水の一部を外部に放出する消火水放出弁とを有し、
前記検知手段の検知値に基づいて前記消火水放出弁を開閉して、前記二次側の圧力を制御することにより、前記消火水に対する前記消火薬剤の混合比を所定の範囲に維持できるようにしたことを特徴とする消火設備。
A fire extinguishing water line through which fire extinguishing water flows, a fire extinguishing agent container for storing fire extinguishing agent, a fire extinguishing agent line for supplying the fire extinguishing agent in the extinguishing agent container to the fire extinguishing water line side, the fire extinguishing agent line and the fire extinguishing water line. A fire extinguishing facility provided with a proportioner for mixing the fire extinguishing agent with the fire extinguishing water provided between the two.
A detection means for detecting the pressure P1 of the fire extinguishing agent line, the pressure P2 on the secondary side of the proportioner in the fire extinguishing water line, or the flow rate of the fire extinguishing agent line, and a part of the fire extinguishing water flowing through the fire extinguishing water line. It has a fire extinguishing water discharge valve that discharges to the outside,
By opening and closing the fire extinguishing water discharge valve based on the detection value of the detecting means and controlling the pressure on the secondary side, the mixing ratio of the fire extinguishing agent to the fire extinguishing water can be maintained within a predetermined range. Fire extinguishing equipment characterized by the fact that it was done.
消火水が流れる消火水ラインと、消火薬剤を貯留する消火薬剤容器と、該消火薬剤容器内の消火薬剤を前記消火水ライン側に供給する消火薬剤ラインと、該消火薬剤ラインと前記消火水ラインとの間に設けられて前記消火水に前記消火薬剤を混合するプロポーショナーと、を備えた消火設備であって、
前記消火水ラインを流れる消火水の一部を外部に放出する消火水放出弁を有し、
該消火水放出弁は、前記消火薬剤ラインの圧力P1又は前記消火水ラインにおける前記プロポーショナーの二次側の圧力P2に基づいて開閉して、前記二次側の圧力を制御することにより、前記消火水に対する前記消火薬剤の混合比を所定の範囲に維持することを特徴とする消火設備。
A fire extinguishing water line through which fire extinguishing water flows, a fire extinguishing agent container for storing fire extinguishing agent, a fire extinguishing agent line for supplying the fire extinguishing agent in the extinguishing agent container to the fire extinguishing water line side, the fire extinguishing agent line and the fire extinguishing water line. A fire extinguishing facility provided with a proportioner for mixing the fire extinguishing agent with the fire extinguishing water provided between the two.
It has a fire extinguishing water discharge valve that discharges a part of the fire extinguishing water flowing through the fire extinguishing water line to the outside.
The fire extinguishing water discharge valve opens and closes based on the pressure P1 of the fire extinguishing agent line or the pressure P2 of the secondary side of the proportioner in the fire extinguishing water line to control the pressure on the secondary side. A fire extinguishing facility characterized in that the mixing ratio of the fire extinguishing agent to the fire extinguishing water is maintained within a predetermined range.
前記消火水放出弁は、前記消火薬剤ラインの圧力と、前記消火水ラインにおける前記プロポーショナーの二次側の消火水とを導入して、前記導入した消火薬剤ラインの圧力に基づいて前記導入した消火水の外部への放出を制御する制御弁であることを特徴とする請求項2に記載の消火設備。 The fire extinguishing water discharge valve introduced the pressure of the fire extinguishing agent line and the fire extinguishing water on the secondary side of the proportioner in the fire extinguishing water line, and introduced the fire extinguishing water based on the pressure of the introduced fire extinguishing agent line. The fire extinguishing equipment according to claim 2, wherein the control valve controls the discharge of fire extinguishing water to the outside. 前記制御弁は、前記消火薬剤ラインと連通する第1室と、前記消火水が導入される第2室と、該第2室を消火水が導入される消火水導入室と消火水を外部に排出するための排出口が設けられた排出室とに仕切る弁体と、前記第1室に導入された消火薬剤の圧力に基づいて前記弁体を開閉させる弁作動機構とを備えたことを特徴とする請求項3記載の消火設備。 The control valve has a first room communicating with the fire extinguishing agent line, a second room into which the fire extinguishing water is introduced, a fire extinguishing water introduction room in which the fire extinguishing water is introduced, and the fire extinguishing water to the outside. It is characterized by having a valve body that partitions the discharge chamber provided with a discharge port for discharging, and a valve operating mechanism that opens and closes the valve body based on the pressure of the fire extinguishing agent introduced into the first chamber. The fire extinguishing equipment according to claim 3. 前記消火水放出弁は、前記消火水ラインにおける前記プロポーショナーの二次側の消火水を導入して、該導入した消火水の圧力に基づいて該導入した消火水の外部への放出を制御する制御弁であることを特徴とする請求項2に記載の消火設備。 The fire extinguishing water discharge valve introduces fire extinguishing water on the secondary side of the proportioner in the fire extinguishing water line and controls the discharge of the introduced fire extinguishing water to the outside based on the pressure of the introduced fire extinguishing water. The fire extinguishing equipment according to claim 2, wherein the fire extinguishing equipment is a control valve. 前記制御弁は、前記消火水が導入される消火水導入室と、該消火水導入室に導入された消火水を外部に排出するための排出口と、前記消火水導入室に導入された消火水の圧力に基づいて前記排出口の開閉を行う弁作動機構とを備えたことを特徴とする請求項5記載の消火設備。 The control valve has a fire extinguishing water introduction chamber into which the fire extinguishing water is introduced, a discharge port for discharging the fire extinguishing water introduced into the fire extinguishing water introduction chamber to the outside, and a fire extinguishing water introduced into the fire extinguishing water introduction chamber. The fire extinguishing facility according to claim 5, further comprising a valve operating mechanism for opening and closing the discharge port based on the pressure of water. 前記消火水放出弁は、請求項3乃至6のいずれか一項に記載の制御弁と、該制御弁をパイロット弁として開閉する一斉開放弁とを備えてなることを特徴とする請求項2に記載の消火設備。 2. The fire extinguishing water discharge valve is characterized by comprising the control valve according to any one of claims 3 to 6 and a simultaneous release valve that opens and closes the control valve as a pilot valve. The listed fire extinguishing equipment.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631554U (en) * 1986-06-19 1988-01-07
JPH07392U (en) * 1993-02-24 1995-01-06 日本ドライケミカル株式会社 Overflow prevention device for water and foam drug compounding device
US20060151184A1 (en) * 2001-11-20 2006-07-13 Boyle Thomas J System and method for testing foam-water fire fighting and fire suppression systems
JP2008301942A (en) * 2007-06-06 2008-12-18 Yamato Protec Co Check apparatus for foam fire extinguishing agent mixing device
JP2018143266A (en) * 2017-03-01 2018-09-20 能美防災株式会社 Fire hydrant device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631554U (en) * 1986-06-19 1988-01-07
JPH07392U (en) * 1993-02-24 1995-01-06 日本ドライケミカル株式会社 Overflow prevention device for water and foam drug compounding device
US20060151184A1 (en) * 2001-11-20 2006-07-13 Boyle Thomas J System and method for testing foam-water fire fighting and fire suppression systems
JP2008301942A (en) * 2007-06-06 2008-12-18 Yamato Protec Co Check apparatus for foam fire extinguishing agent mixing device
JP2018143266A (en) * 2017-03-01 2018-09-20 能美防災株式会社 Fire hydrant device

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