JP2010183999A - Sprinkler fire extinguisher - Google Patents

Sprinkler fire extinguisher Download PDF

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JP2010183999A
JP2010183999A JP2009029326A JP2009029326A JP2010183999A JP 2010183999 A JP2010183999 A JP 2010183999A JP 2009029326 A JP2009029326 A JP 2009029326A JP 2009029326 A JP2009029326 A JP 2009029326A JP 2010183999 A JP2010183999 A JP 2010183999A
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fire extinguishing
secondary side
water
pipe
fire
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JP5305444B2 (en
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Kenji Yoneyama
顕司 米山
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Nohmi Bosai Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprinkler fire extinguisher which solves problems associated with a pre-action type sprinkler fire extinguisher that encloses air in a secondary side, such as delay in start of watering or the like, and prevents loss of water upon malfunctioning due to damage of a sprinkler head. <P>SOLUTION: A pre-action type sprinkler fire extinguisher is provided in which the secondary pipe 3 connected to a secondary side of an alarm valve 1 is filled with a pressurized fire extinguishing agent 11 being liquid at room temperature, volatile, having insulating property, and fire extinguishing capacity. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、スプリンクラ消火設備、より詳しくは予作動式スプリンクラ消火設備に関する。   The present invention relates to a sprinkler fire extinguishing equipment, and more particularly to a pre-actuated sprinkler fire extinguishing equipment.

予作動式スプリンクラ消火設備は、火災感知器とスプリンクラヘッドの両方が作動したときに放水を開始する設備である（特許文献１参照）。このような予作動式スプリンクラ消火設備においては、警報弁（流水検知装置）の二次側に接続される二次側配管には、通常、圧縮空気を充填し、その圧力を監視することで二次側配管の漏れやスプリンクラヘッドの破損などがないことを確認している。予作動式スプリンクラ消火設備は、二次側配管内に水が入っていないことや、感知器とスプリンクラヘッドの一方が作動しただけでは放水しないため、破損や誤作動による水損に対して信頼性の高い設備であると言える。   The pre-actuated sprinkler fire extinguishing equipment is equipment that starts water discharge when both the fire detector and the sprinkler head are activated (see Patent Document 1). In such a pre-acting sprinkler fire extinguishing equipment, the secondary side pipe connected to the secondary side of the alarm valve (running water detection device) is usually filled with compressed air and the pressure is monitored. It is confirmed that there is no leakage from the secondary piping or damage to the sprinkler head. Pre-acting sprinkler fire extinguishing equipment is reliable against water damage due to breakage or malfunction because water does not enter the secondary side piping, or one of the sensor and sprinkler head does not discharge. It can be said that the equipment is expensive.

特許第３０９９２３３号公報Japanese Patent No. 3099233

しかしながら、予作動式スプリンクラ消火設備には以下に示すような問題がある。
（ａ）スプリンクラヘッドが作動した時、二次側配管内の圧縮空気が放出しきるまで水がスプリンクラヘッドから出ないため放水開始が遅れる。
（ｂ）放水開始遅れを低減するため、二次側配管の配管口径に基づいて二次側配管の配管ボリュームの上限が定められる。このため実設備に使用することを考慮すると警報弁や配管の口径が大きくなる。
（ｃ）放水開始が遅れることによる火災拡大に対応するためスプリンクラヘッドの同時開栓個数を湿式スプリンクラ消火設備の1.5倍にする必要がある。このため水源水量が多くなる。
（ｄ）二次側配管に充填する圧縮空気は、水などの液体と比較すると配管ねじ込み部などから漏れやすいため、このような微少な漏れを補うためエアコンプレッサ等の設備が必要である。
（ｅ）下向きのスプリンクラヘッドを使用した場合、耐圧試験時などに通水した水が立ち下がり管に残り、スプリンクラヘッドを外さない限り排出することができず、この残り水と空気の喫水部分が腐食しやすい。
なお、二次側配管に水を充水する充水予作動式流水検知装置とした場合、二次側配管に圧縮空気を封入している予作動式スプリンクラ消火設備の上記のような問題点は解消できるが、外力などによりスプリンクラヘッドが破損した際に二次側配管内の水が放出されるため、僅かな水量とはいえ、電気機器や書類などに悪影響を及ぼす可能性がある。 However, the pre-actuated sprinkler fire extinguishing equipment has the following problems.
(A) When the sprinkler head is activated, water does not come out of the sprinkler head until the compressed air in the secondary side pipe is completely discharged, so that the start of water discharge is delayed.
(B) In order to reduce the delay in starting water discharge, the upper limit of the pipe volume of the secondary side pipe is determined based on the pipe diameter of the secondary side pipe. For this reason, when considering use in actual equipment, the diameter of the alarm valve or the pipe becomes large.
(C) It is necessary to increase the number of sprinkler heads simultaneously opened to 1.5 times the number of wet sprinkler fire extinguishing equipment in order to cope with the fire expansion due to the delay of the start of water discharge. For this reason, the amount of water source water increases.
(D) The compressed air filled in the secondary side pipe is more likely to leak from the screwed part of the pipe as compared with a liquid such as water. Therefore, equipment such as an air compressor is necessary to compensate for such a slight leak.
(E) When a downward sprinkler head is used, water that has passed through during the pressure test remains in the falling pipe and cannot be discharged unless the sprinkler head is removed. It is easy to corrode.
In addition, when using a pre-charged flow detection device that fills the secondary pipe with water, the above-mentioned problems with the pre-actuated sprinkler fire extinguishing equipment in which compressed air is sealed in the secondary pipe are: Although it can be eliminated, water in the secondary side pipe is released when the sprinkler head is damaged by external force or the like. However, even if the amount of water is small, there is a possibility of adversely affecting electrical equipment and documents.

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、二次側に空気を封入する予作動式スプリンクラ消火設備が有する放水開始遅れ等の問題点を解消すると共にスプリンクラヘッドの破損による誤作動時の水損も防止できるスプリンクラ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 solves problems such as a delay in the start of water discharge of the pre-acting sprinkler fire extinguishing equipment which encloses air on the secondary side and malfunctions due to damage to the sprinkler head. The purpose is to provide a sprinkler fire extinguishing system that can prevent water loss at the time.

（１）本発明に係るスプリンクラ消火設備は、予作動式スプリンクラ消火設備における警報弁の二次側に接続される二次側配管に、常温で液体であり、揮発性を有し、電気絶縁性があり、消火能力のある消火剤を加圧充填してなることを特徴とするものである。 (1) The sprinkler fire extinguishing equipment according to the present invention is a liquid at room temperature, volatile, and electrically insulative to the secondary pipe connected to the secondary side of the alarm valve in the pre-actuated sprinkler fire extinguishing equipment. It is characterized by being pressure-filled with a fire extinguishing agent having a fire extinguishing ability.

（２）上記（１）に記載のものにおいて、前記消火剤は、炭素数３以上で、フッ素置換が行われているエーテルからなるものであることを特徴とするものである。 (2) The thing as described in said (1) WHEREIN: The said fire extinguishing agent consists of ether which has 3 or more carbon atoms and fluorine substitution is performed.

（３）上記（１）又は（２）に記載のものにおいて、前記二次側配管に、調圧弁を介して前記二次側配管に充填した消火剤の圧力よりも高圧で消火剤を充填したボンベを接続して、前記二次側配管内の消火剤の圧力が低下したときに前記ボンベ内の消火剤が二次側配管内に補充されるようにしたことを特徴とするものである。 (3) In the above (1) or (2), the secondary side pipe is filled with a fire extinguisher at a pressure higher than the pressure of the fire extinguisher filled in the secondary side pipe via a pressure regulating valve. A cylinder is connected, and when the pressure of the extinguishing agent in the secondary side pipe decreases, the extinguishing agent in the cylinder is replenished into the secondary side pipe.

本発明においては、予作動式スプリンクラ消火設備における警報弁の二次側に接続される二次側配管に常温で液体であり、揮発性を有し、電気機器にかかっても電気機器がショートしない程度の、電気絶縁性があり、冷却作用および窒息作用による消火能力のある消火剤を封入したことにより、以下のような効果を奏することができる。
・火災時に放水が開始されるまでの間、消火剤を放出するため放水開始遅れを考慮する必要がない。
・放水開始遅れがないため、流水検知装置、配管などの口径を湿式スプリンクラ消火設備なみに小さくできるので、設備にかかる費用が抑えられる。
・放水開始遅れがないため、スプリンクラヘッドの同時開栓個数を湿式スプリンクラ消火設備と同様に出来、水源水量が少なく出来る。また二次側配管ボリュームの制限がなくなる。
・例えば外力によりスプリンクラヘッドを破損しても、消火剤に電気絶縁性があるので電気機器に悪影響を及ぼさない。また、揮発性を有しているので、書類に消火剤がかかってもすぐ蒸発するため、書類に悪影響を及ぼさない。
・流水検知装置ごとに消火剤を高圧加圧充填したボンベを設置すればよく、空気を封入する場合に必要となるエアコンプレッサが不要となる。 In the present invention, the secondary side pipe connected to the secondary side of the alarm valve in the pre-actuated sprinkler fire extinguishing equipment is liquid at room temperature, has volatility, and does not short-circuit even when applied to the electrical equipment. By enclosing a fire extinguishing agent that is electrically insulating and has a fire extinguishing ability by cooling action and suffocation action, the following effects can be obtained.
・ Because the fire extinguishing agent is released until the start of water discharge in the event of a fire, there is no need to consider the delay in starting water discharge.
・ Because there is no delay in the start of water discharge, the diameter of the water flow detector, piping, etc. can be made as small as a wet sprinkler fire extinguishing equipment, so the cost of equipment can be reduced.
-Since there is no delay in the start of water discharge, the number of sprinkler heads that can be opened simultaneously can be the same as for wet sprinkler fire extinguishing equipment, and the amount of water source can be reduced. Also, there is no restriction on the secondary pipe volume.
・ For example, even if the sprinkler head is damaged by an external force, the fire extinguishing agent has electrical insulation, so it does not adversely affect the electrical equipment. In addition, since it has volatility, it evaporates immediately even if a fire extinguisher is applied to the document, so that the document is not adversely affected.
-It is only necessary to install a high-pressure pressurized cylinder filled with a fire extinguishing agent for each running water detection device, eliminating the need for an air compressor that is required when enclosing air.

本発明の一実施の形態に係るスプリンクラ消火設備の説明図である。It is explanatory drawing of the sprinkler fire extinguishing equipment which concerns on one embodiment of this invention.

図１は本発明の一実施の形態に係る予作動式スプリンクラ消火設備の説明図である。本実施の形態に係る予作動式スプリンクラ消火設備は、警報弁１と、警報弁１の二次側に接続された二次側配管３と、警報弁１の一次側に接続された一次側配管５を備えている。そして、二次側配管３には閉鎖型スプリンクラヘッド７が設けられ、二次側配管３の末端には末端試験弁９が設けられている。そして、二次側配管３には、ドデカフルオロ-2-メチルペンタン-3-オンからなる消火剤１１（以下、単に「消火剤１１」という）を加圧充填している。また、一次側配管５には消火用水１３が充水されている。   FIG. 1 is an explanatory diagram of a pre-actuated sprinkler fire extinguishing facility according to an embodiment of the present invention. The pre-actuated sprinkler fire extinguishing equipment according to the present embodiment includes an alarm valve 1, a secondary side pipe 3 connected to the secondary side of the alarm valve 1, and a primary side pipe connected to the primary side of the alarm valve 1. 5 is provided. A closed sprinkler head 7 is provided on the secondary side pipe 3, and a terminal test valve 9 is provided at the end of the secondary side pipe 3. The secondary side pipe 3 is filled with a fire extinguishing agent 11 (hereinafter simply referred to as “extinguishing agent 11”) made of dodecafluoro-2-methylpentan-3-one. The primary side pipe 5 is filled with fire-extinguishing water 13.

また、二次側配管３には、二次側配管３から消火剤１１が漏れた場合にその漏れ分の消火剤１１を補充するための消火剤補充装置１５が接続されている。この消火剤補充装置１５は、二次側配管３に連通する消火剤補充管１７と、消火剤補充管１７の途中に設けられた調圧弁１９と、消火剤補充管１７の末端に接続されると共に消火剤を加圧充填した消火剤ボンベ２１とを備えている。消火剤ボンベ２１には二次側配管３内の圧力よりも高圧で充填された消火剤が充填されている。
また、消火剤補充管１７には上記の機器類の他、逆止弁２３、監視圧力低下警報用の圧力スイッチ２５、開閉弁２７が設けられている。
調圧弁１９は、二次側配管３内の圧力を所定圧に設定するものであり、例えば、ボンベ内の消火剤の圧力が４Kg/cm2であった場合、これを１Kg/cm2に減圧して二次側配管３側に供給する。
なお、消火剤補充管１７には動作試験を行なったときに充水された水を抜くための排水管２９が連結され、この排水管には排水弁３１が設けられている。 In addition, when the extinguishing agent 11 leaks from the secondary side pipe 3, a fire extinguishing agent replenishing device 15 is connected to the secondary side piping 3 for replenishing the extinguishing agent 11 corresponding to the leakage. This extinguishing agent replenishing device 15 is connected to the extinguishing agent replenishing pipe 17 communicating with the secondary side pipe 3, the pressure regulating valve 19 provided in the middle of the extinguishing agent replenishing pipe 17, and the end of the extinguishing agent replenishing pipe 17. And a fire extinguisher cylinder 21 filled with a fire extinguishing agent under pressure. The fire extinguisher cylinder 21 is filled with a fire extinguisher filled at a pressure higher than the pressure in the secondary pipe 3.
In addition to the above devices, the fire extinguishing agent replenishment pipe 17 is provided with a check valve 23, a pressure switch 25 for monitoring pressure drop alarm, and an on-off valve 27.
Pressure regulating valve 19 is adapted to set the pressure in the secondary side piping 3 to a predetermined pressure, for example, when the pressure of the extinguishing agent in the cylinder was 4 Kg / cm 2, pressure reducing this to 1Kg / cm 2 Then, the secondary side pipe 3 is supplied.
The fire extinguishing agent replenishment pipe 17 is connected to a drain pipe 29 for draining water charged when an operation test is performed, and a drain valve 31 is provided in the drain pipe.

ここで、二次側配管３に充填されるドデカフルオロ-2-メチルペンタン-3-オンからなる消火剤について説明する。
この消火剤は、本発明における(a)常温で液体、(b)沸点が低く（４８℃〜８０℃）、水と比べて揮発性が高い、(c)電気絶縁性が高い、(d)消火能力がある、という性質を有する消火剤の一例である。
ドデカフルオロ-2-メチルペンタン-3-オンは、ＣＦ3ＣＦ2Ｃ（Ｏ）ＣＦ（ＣＦ3）2という示性式で表されるフッ素系化学物質である。このフッ素系化学物質は、ＯＤＰ（オゾン層破壊係数）が０であり、ＧＷＰ（地球温暖化係数）が１に近く、絶縁性があるなどの物性の他に、沸点が常温帯域の近傍の４８℃と低沸点であるため、通常利用される消火水と比べて揮発性が高く速乾性に優れているという物性を有する。本消火剤１１は、上記薬剤に限定される必要はなく、上記物性を有した薬剤であれば良い。例えば、炭素数３以上、具体的には炭素数が４〜８程度で、フッ素置換が行われているエーテル等が挙げられる。 Here, a fire extinguisher composed of dodecafluoro-2-methylpentan-3-one filled in the secondary side pipe 3 will be described.
The fire extinguishing agent in the present invention is (a) liquid at normal temperature, (b) low boiling point (48 ° C. to 80 ° C.), high volatility compared to water, (c) high electrical insulation, (d) It is an example of a fire extinguishing agent having the property of having a fire extinguishing ability.
Dodecafluoro-2-methylpentan-3-one is a fluorine-based chemical substance represented by the referential formula CF 3 CF 2 C (O) CF (CF 3 ) 2 . This fluorine-based chemical substance has an ODP (ozone depletion coefficient) of 0, a GWP (global warming potential) of close to 1 and an insulating property, etc., and a boiling point of 48 near the normal temperature range. Since it has a low boiling point of ° C., it has physical properties that it is highly volatile and quick-drying compared to fire extinguishing water that is normally used. The fire extinguishing agent 11 need not be limited to the above-described drug, and may be any drug having the above physical properties. Examples thereof include ethers having 3 or more carbon atoms, specifically about 4 to 8 carbon atoms, and fluorine substitution.

再び、図１に基づいて本実施の形態の予作動式スプリンクラ消火設備について説明する。
警報弁１には、ピストン室３３が設けられ、ピストン室３３内の水圧が変化することによってピストン３４が移動し、一次側と二次側を閉止したり連通させたりする。ピストン室３３の水圧を変化させるための機構として、ピストン室３３に一次側配管５の水を充水するための充水管３５と、ピストン室３３の水を排水するための排水管３７とが設けられている。そして、充水管３５にはオリフィス３６が設けられている。また、排水管３７は途中で二本に分岐しており、一方の配管には電磁弁３８が設けられ、他方の配管には手動起動弁３９が設けられている。分岐した配管は先端側で繋がっており、この繋がった後の配管には放水警報用の圧力スイッチ４０が設けられている。
また、警報弁１には、放水警報の圧力スイッチの動作確認をするための試験弁４１が設けられている。 Again, the pre-actuated sprinkler fire extinguishing equipment of this embodiment will be described based on FIG.
The alarm valve 1 is provided with a piston chamber 33, and the piston 34 moves by changing the water pressure in the piston chamber 33, thereby closing or communicating the primary side and the secondary side. As a mechanism for changing the water pressure of the piston chamber 33, a water filling pipe 35 for filling the piston chamber 33 with water of the primary side pipe 5 and a drain pipe 37 for draining the water of the piston chamber 33 are provided. It has been. The filling pipe 35 is provided with an orifice 36. Moreover, the drain pipe 37 is branched into two in the middle, and an electromagnetic valve 38 is provided in one pipe, and a manual activation valve 39 is provided in the other pipe. The branched pipe is connected at the tip end side, and a pressure switch 40 for water discharge warning is provided on the pipe after the connection.
The alarm valve 1 is provided with a test valve 41 for confirming the operation of the pressure switch for the water discharge alarm.

電磁弁３８、放水警報用の圧力スイッチ４０、監視圧力低下警報用の圧力スイッチ２５、開閉弁２７は制御盤４３に電気的に接続され、信号の授受や動作制御が行われる。
また、火災感知器４５の信号は火災受信機４７に送られ、火災受信機４７の信号が制御盤４３に送られて警報弁１の動作が制御されることになる。 The electromagnetic valve 38, the pressure switch 40 for water discharge warning, the pressure switch 25 for monitoring pressure drop warning, and the on-off valve 27 are electrically connected to the control panel 43, and exchange of signals and operation control are performed.
The signal from the fire detector 45 is sent to the fire receiver 47, and the signal from the fire receiver 47 is sent to the control panel 43 to control the operation of the alarm valve 1.

以上のように構成された本実施の形態の作動を、監視時、試験時、火災時、誤作動時に分けて説明する。
＜監視時＞
監視時は、電磁弁３８、手動起動弁３９は閉じており、警報弁１のピストン室３３にはオリフィス３６を介して一次側配管５の消火用水１３が入り、警報弁１は閉じた状態になっている。また、監視時には、開閉弁２７が開いており二次側配管３には消火剤１１が所定の圧力で充填されている。
監視時は長期間に亘るため、二次側配管３のいずれかの箇所から充填している消火剤１１がもれ、圧力が低下することも考えられるが、このときには調圧弁１９を介してボンベ内の消火剤が適宜充填される。
もっとも、充填している消火剤１１が液体であることから、従来例の空気等の気体を充填している場合に比較して、消火剤自体が粘性を有しているので、漏れにくい。 The operation of the present embodiment configured as described above will be described separately for monitoring, testing, fire, and malfunction.
<When monitoring>
At the time of monitoring, the solenoid valve 38 and the manual start valve 39 are closed, the fire extinguishing water 13 of the primary side pipe 5 enters the piston chamber 33 of the alarm valve 1 through the orifice 36, and the alarm valve 1 is closed. It has become. At the time of monitoring, the on-off valve 27 is open and the secondary pipe 3 is filled with the fire extinguishing agent 11 at a predetermined pressure.
Since monitoring takes a long period of time, the extinguishing agent 11 filled from any part of the secondary side pipe 3 may leak and the pressure may drop, but at this time, the cylinder is connected via the pressure regulating valve 19. The inside extinguishing agent is appropriately filled.
But since the fire extinguisher 11 with which it is filled is a liquid, since the fire extinguisher itself has viscosity compared with the case where gas, such as the conventional example, is filled, it is hard to leak.

＜試験時＞
設備を設置した時に行われる放水試験時には、火災感知器４５を加熱するなどして作動させ、その信号により火災受信機４７及び制御盤４３の動作を経て電磁弁３８が開放する。電磁弁３８が開放することで、ピストン室３３内の水が排出され、ピストン室３３の圧力が低下して警報弁１が開放する。警報弁１が開放したことは、放水警報用の圧力スイッチ４０で感知され、警報弁１の動作確認、即ち、放水警報の有無の確認ができる。
警報弁１が開放して末端試験弁９を開放すると、一次側配管５内の消火用水１３が二次側配管３内に流入する。この時、閉鎖型スプリンクラヘッド７と二次側配管３とを連結する立ち下配管内には消火用水１３が充填されるが、その後二次側配管３内には消火剤１１が充填される。したがって、放水試験を行った後、立ち下配管に水が残留しても、水との境目には消火剤１１が充填されており、錆発生原因となる消火用水１３と空気との境目ができなくなるので、従来例の二次側配管３に空気を充填する場合に懸念される錆の発生の心配がない。 <During testing>
At the time of a water discharge test performed when the equipment is installed, the fire detector 45 is operated by heating or the like, and the solenoid valve 38 is opened through the operation of the fire receiver 47 and the control panel 43 by the signal. When the electromagnetic valve 38 is opened, the water in the piston chamber 33 is discharged, the pressure in the piston chamber 33 is reduced, and the alarm valve 1 is opened. The opening of the alarm valve 1 is detected by the pressure switch 40 for water discharge alarm, and the operation of the alarm valve 1 can be confirmed, that is, the presence or absence of the water discharge alarm can be confirmed.
When the alarm valve 1 is opened and the terminal test valve 9 is opened, the fire extinguishing water 13 in the primary side pipe 5 flows into the secondary side pipe 3. At this time, the falling pipe connecting the closed sprinkler head 7 and the secondary side pipe 3 is filled with the fire extinguishing water 13, and then the secondary side pipe 3 is filled with the fire extinguishing agent 11. Therefore, after the water discharge test, even if water remains in the standing pipe, the water extinguishing agent 11 is filled at the boundary with the water, and the boundary between the fire extinguishing water 13 and the air that causes rusting can be created. Therefore, there is no concern about the occurrence of rust, which is a concern when the secondary side pipe 3 of the conventional example is filled with air.

末端試験弁９を開いて、閉鎖型スプリンクラヘッド１個分のダミー放水を行い、最も遠地点における末端試験弁９に所定圧以上の圧力が出るか否かを調べる。この放水試験の後、電磁弁３８を閉じることによりピストン室３３内に消火用水１３がされ、警報弁１を閉止し、二次側配管３内の水を末端試験弁９の開放によって排水する。その後、末端試験弁９を閉じ、警報弁１のまわりの排水弁３１を開けて警報弁１直後の二次側垂直配管３内の消火用水１３を排出する。   The end test valve 9 is opened, a dummy water discharge is performed for one closed sprinkler head, and it is examined whether or not a pressure higher than a predetermined pressure is generated in the end test valve 9 at the farthest point. After this water discharge test, the extinguishing water 13 is made in the piston chamber 33 by closing the electromagnetic valve 38, the alarm valve 1 is closed, and the water in the secondary pipe 3 is drained by opening the end test valve 9. Thereafter, the end test valve 9 is closed, the drain valve 31 around the alarm valve 1 is opened, and the fire-extinguishing water 13 in the secondary vertical pipe 3 immediately after the alarm valve 1 is discharged.

二次側配管３から消火用水１３の排水が完了すると、消火剤充填装置１５の開閉弁２７を開放することで、二次側配管３に消火剤１１を充填する。このとき、二次側配管３内の消火剤１１の圧力は調圧弁１９によって所定の圧力に調整され、その後も維持される。   When drainage of the fire extinguishing water 13 from the secondary side pipe 3 is completed, the extinguishing agent 11 is filled in the secondary side pipe 3 by opening the on-off valve 27 of the extinguishing agent filling device 15. At this time, the pressure of the extinguishing agent 11 in the secondary side pipe 3 is adjusted to a predetermined pressure by the pressure regulating valve 19 and is maintained thereafter.

上記の試験は予作動式スプリンクラ消火設備を設置した時に行うものであるが、設備を設置した後の通常の定期点検などにおいては警報弁１を開放すると二次側配管３内に充填している消火剤１１が無駄になってしまう。そこで、このような通常の点検時においては、試験弁４１を開放して放水警報用の圧力スイッチ４０の作動確認を行うようにすればよい。   The above test is performed when the pre-actuated sprinkler fire extinguishing equipment is installed, but in normal periodic inspection after installing the equipment, when the alarm valve 1 is opened, the secondary pipe 3 is filled. The fire extinguishing agent 11 is wasted. Therefore, during such a normal inspection, the test valve 41 may be opened to confirm the operation of the pressure switch 40 for water discharge alarm.

＜火災時＞
火災が発生すると、試験時で説明したのと同様の作動により、警報弁１が開放する。警報弁１が開放すると、圧力水が二次側へ流入するとともに、放水警報を発する。更に、火災が拡大すると、その熱により閉鎖型スプリンクラヘッド７が開放し、消火剤１１が放出される。消火剤１１は、ドデカフルオロ-2-メチルペンタン-3-オンからなるものであり、それ自体に消火能力があるので、消火遅れの問題は生じない。
なお、火災を消火するための要素として、(a)熱を奪う、(b)可燃物（燃えるもの）を奪う、(c)酸素を奪う、これら３つに加えて、火災の連鎖反応を断ち切ることが挙げられる。本実施形態の消火剤１１は酸素濃度を低下させることに加えて、消火剤１１が気化する際に熱を奪い、火災の連鎖を断ち切ることができるため、初期消火には最適であると言える。つまり、予作動式スプリンクラ消火設備の二次側配管３内に消火剤１１を充填することで、初期消火の遅れが生じないという消極的な効果ではなく、むしろ初期消火を確実にできるという積極的な効果を奏する。 <In case of fire>
When a fire occurs, the alarm valve 1 is opened by the same operation as described in the test. When the alarm valve 1 is opened, pressure water flows into the secondary side and issues a water discharge alarm. Further, when the fire spreads, the closed sprinkler head 7 is opened by the heat, and the fire extinguishing agent 11 is released. The fire extinguishing agent 11 is made of dodecafluoro-2-methylpentan-3-one and has a fire extinguishing capability by itself, so that there is no problem of fire extinguishing delay.
In addition to these three elements, (a) take away heat, (b) take away combustibles (burning things), and (c) take up oxygen as elements for extinguishing the fire. Can be mentioned. In addition to lowering the oxygen concentration, the fire extinguisher 11 of the present embodiment can take heat when the fire extinguisher 11 evaporates and break the fire chain, so it can be said that it is optimal for initial fire extinguishing. In other words, filling the secondary pipe 3 of the pre-actuated sprinkler fire extinguishing equipment with the extinguishing agent 11 is not a negative effect that the delay of the initial extinguishing does not occur, but rather the positive that the initial extinguishing can be ensured. Has an effect.

消火剤１１の放出が終わった後、消火用水１３の放水が開始される。そして、配管内の消火用水１３の流水、放出により配管内圧力が降下すると、図示しない圧力空気槽に設けられた圧力スイッチが動作し、ポンプ起動用信号をポンプ制御盤に送り、該制御盤によりポンプが運転され、引き続いて放水消火される。
また、放水中は監視圧より高圧の消火用水１３が流れているが、逆止弁２３によって消火用水１３が消火剤補充装置側に流入するのを防止できる。さらに、調圧弁１９を設けているため、監視圧より高圧の消火用水１３が流れている放水中においては、消火剤１１が必要以上に二次側配管３側に流出するのを防止できる。 After the extinguishing of the fire extinguishing agent 11, the water discharge of the fire extinguishing water 13 is started. When the pressure in the pipe drops due to the flow and discharge of the fire-extinguishing water 13 in the pipe, a pressure switch provided in a pressure air tank (not shown) operates to send a pump start signal to the pump control panel. The pump is operated and the water discharge is subsequently extinguished.
Moreover, although the fire extinguishing water 13 having a pressure higher than the monitoring pressure flows during the discharge, the check valve 23 can prevent the fire extinguishing water 13 from flowing into the extinguishing agent replenishing device. Further, since the pressure regulating valve 19 is provided, the fire extinguishing agent 11 can be prevented from flowing out to the secondary side pipe 3 side more than necessary in the discharge water in which the fire extinguishing water 13 higher than the monitoring pressure is flowing.

＜誤作動時＞
例えば、スプリンクラヘッドが物理的な衝撃を受けて開放したような場合には、二次側配管３に充填されている消火剤１１が放出されることになる。しかし、放出される消火剤１１がドデカフルオロ-2-メチルペンタン-3-オンからなるものであり、水損の心配はない。
なお、このような誤作動の場合には、監視圧力低下警報用圧力スイッチの動作により、この信号を受けた制御盤４３からの信号で開閉弁２７を閉止するようにすることで、消火剤１１が無駄になるのを防止できる。 <In case of malfunction>
For example, when the sprinkler head is opened due to a physical impact, the fire extinguishing agent 11 filled in the secondary side pipe 3 is released. However, since the fire extinguishing agent 11 to be released is made of dodecafluoro-2-methylpentan-3-one, there is no fear of water loss.
In the case of such a malfunction, the on-off valve 27 is closed by a signal from the control panel 43 that has received this signal by the operation of the pressure switch for monitoring pressure drop alarm, so that the extinguishing agent 11 Can be wasted.

以上のように、本実施の形態によれば、二次側配管３内に消火能力のある消火剤１１を充填し、初期消火時にこの消火能力のある消火剤１１を放出するようにしたので放水開始遅れを考慮する必要がなく、このため警報弁１、配管などの口径を湿式スプリンクラ消火設備なみに小さくでき、またスプリンクラヘッドの同時開栓個数を湿式スプリンクラ消火設備と同様に出来るので水源水量が少なく出来る。
他方、外力によりスプリンクラヘッドを破損しても、充水式の場合のように電気機器や書類に悪影響を及ぼすことはない。
上記のような優れた効果は、消火剤１１そのものが有している効果ではなく、消火剤１１の有している効果に起因しているが、このような性質の消火剤１１を予作動式スプリンクラ消火設備の二次側配管３にのみ充填するという構成によるものである。 As described above, according to the present embodiment, the secondary pipe 3 is filled with the extinguishing agent 11 having the extinguishing ability, and the extinguishing agent 11 having the extinguishing ability is discharged during the initial extinguishing. Since there is no need to consider the start delay, the diameter of the alarm valve 1, piping, etc. can be made as small as the wet sprinkler fire extinguishing equipment, and the number of sprinkler heads that can be opened simultaneously can be the same as the wet sprinkler fire extinguishing equipment. Can be less.
On the other hand, even if the sprinkler head is damaged by an external force, it does not adversely affect electrical equipment and documents as in the case of the water-filled type.
The excellent effects as described above are caused not by the effects of the extinguishing agent 11 itself but by the effects of the extinguishing agent 11. However, the extinguishing agent 11 having such properties is pre-actuated. This is because only the secondary side pipe 3 of the sprinkler fire extinguishing equipment is filled.

なお、上記の実施の形態で説明した消火剤ボンベ２１は警報弁１ごとに設けてもよいし、消火剤ボンベ数台を１箇所にまとめて全ての警報弁１で共用するようにしてもよい。   The fire extinguisher cylinder 21 described in the above embodiment may be provided for each alarm valve 1, or several fire extinguishant cylinders may be integrated into one place and shared by all the alarm valves 1. .

また、上記の実施の形態で説明した消火剤ボンベ内の消火剤は、点検時に残存量を確認し、残存量が僅かであればボンベごと交換するようにすればよい。   In addition, the extinguishing agent in the extinguishing agent cylinder described in the above embodiment may be confirmed by checking the remaining amount at the time of inspection, and replacing the entire cylinder if the remaining amount is small.

１ 警報弁
３ 二次側配管
５ 一次側配管
７ 閉鎖型スプリンクラヘッド
９ 末端試験弁
１１ 消火剤
１３ 消火用水
１５ 消火剤補充装置
１７ 消火剤補充管
１９ 調圧弁
２１ 消火剤ボンベ
２３ 逆止弁
２５ 監視圧力低下警報用の圧力スイッチ
２７ 開閉弁
２９ 排水管
３１ 排水弁
３３ ピストン室
３４ ピストン
３５ 充水管
３６ オリフィス
３７ 排水管
３８ 電磁弁
３９ 手動起動弁
４０ 放水警報用の圧力スイッチ
４１ 試験弁
４３ 制御盤
４５ 火災感知器
４７ 火災受信機 DESCRIPTION OF SYMBOLS 1 Alarm valve 3 Secondary side piping 5 Primary side piping 7 Closed type sprinkler head 9 Terminal test valve 11 Extinguishing agent 13 Fire extinguishing water 15 Extinguishing agent replenishing device 17 Extinguishing agent replenishing pipe 19 Pressure regulating valve 21 Extinguishing agent cylinder 23 Check valve 25 Monitoring Pressure switch for pressure drop alarm 27 Open / close valve 29 Drain pipe 31 Drain valve 33 Piston chamber 34 Piston 35 Filled pipe 36 Orifice 37 Drain pipe 38 Solenoid valve 39 Manual start valve 40 Pressure switch for water discharge alarm 41 Test valve 43 Control panel 45 Fire detector 47 Fire receiver

Claims (3)

予作動式スプリンクラ消火設備における警報弁の二次側に接続される二次側配管に、常温で液体であり、揮発性が高く、電気絶縁性があり、消火能力のある消火剤を加圧充填してなることを特徴とする予作動式スプリンクラ消火設備。 The secondary piping connected to the secondary side of the alarm valve in the pre-actuated sprinkler fire extinguishing equipment is pressurized with a fire extinguishing agent that is liquid at room temperature, highly volatile, electrically insulating, and has a fire extinguishing capability. Pre-actuated sprinkler fire extinguishing equipment characterized by 前記消火剤は、炭素数３以上で、フッ素置換が行われているエーテルからなるものであることを特徴とする請求項１に記載の予作動式スプリンクラ消火設備。 The pre-actuated sprinkler fire extinguishing equipment according to claim 1, wherein the fire extinguishing agent is made of ether having 3 or more carbon atoms and fluorine substitution. 前記二次側配管に、調圧弁を介して前記二次側配管に充填した消火剤の圧力よりも高圧で消火剤を充填したボンベを接続して、前記二次側配管内の消火剤の圧力が低下したときに前記ボンベ内の消火剤が二次側配管内に補充されるようにしたことを特徴とする請求項１又は２に記載の予作動式スプリンクラ消火設備。 The pressure of the fire extinguisher in the secondary side pipe is connected to the secondary side pipe by connecting a cylinder filled with a fire extinguisher at a pressure higher than the pressure of the fire extinguisher filled in the secondary side pipe via a pressure regulating valve. The pre-actuated sprinkler fire extinguishing equipment according to claim 1 or 2, wherein a fire extinguishing agent in the cylinder is replenished in the secondary side pipe when the pressure drops.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013192583A (en) * 2012-03-16 2013-09-30 Nohmi Bosai Ltd Sprinkler fire extinguishing equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0664664U (en) * 1991-07-01 1994-09-13 正道 金田 Sprinkler fire extinguisher
JP3099233B1 (en) * 2000-01-01 2000-10-16 能美防災株式会社 Fire extinguishing equipment
JP2003117017A (en) * 2001-10-12 2003-04-22 Hochiki Corp Sprinkler fire extinguishing equipment
JP2003260148A (en) * 2002-03-07 2003-09-16 Nohmi Bosai Ltd Fire-fighting facility

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0664664U (en) * 1991-07-01 1994-09-13 正道 金田 Sprinkler fire extinguisher
JP3099233B1 (en) * 2000-01-01 2000-10-16 能美防災株式会社 Fire extinguishing equipment
JP2003117017A (en) * 2001-10-12 2003-04-22 Hochiki Corp Sprinkler fire extinguishing equipment
JP2003260148A (en) * 2002-03-07 2003-09-16 Nohmi Bosai Ltd Fire-fighting facility

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013192583A (en) * 2012-03-16 2013-09-30 Nohmi Bosai Ltd Sprinkler fire extinguishing equipment

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