JP3079443B2 - Fire extinguishing equipment - Google Patents
Fire extinguishing equipmentInfo
- Publication number
- JP3079443B2 JP3079443B2 JP03109798A JP10979891A JP3079443B2 JP 3079443 B2 JP3079443 B2 JP 3079443B2 JP 03109798 A JP03109798 A JP 03109798A JP 10979891 A JP10979891 A JP 10979891A JP 3079443 B2 JP3079443 B2 JP 3079443B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- fire extinguishing
- pipe
- drainage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】この発明は、スプリンクラ消火設
備、水噴霧消火設備、泡消火設備、混合薬剤消火設備等
のように消火液が消火ヘッドから放出される方式の消火
設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system in which a fire extinguishing liquid is discharged from a fire extinguishing head, such as a sprinkler fire extinguishing system, a water spray extinguishing system, a foam extinguishing system, and a mixed chemical extinguishing system.
【０００２】[0002]
【従来の技術】これらの消火設備として最も代表的なス
プリンクラ消火設備について説明する。スプリンクラ消
火設備は、従来から開放型、閉鎖型の湿式や乾式、予作
動式等の種々の系統が利用されている。閉鎖型スプリン
クラ消火設備は、各警戒地区に設けた閉鎖型スプリンク
ラヘッドの端末まで加圧された消火液を常時充填してお
くものであり、火災検出と同時に散水動作をとることが
でき、最も一般的な、ビル等に用いられる設備であり、
配管の端末まで加圧された消火液が常時充填されている
ので、スプリンクラヘッドの火災検出による動作と同時
に消火液の放出が可能であるという特徴を有している。
しかし、物が当たる等による事故でスプリンクラヘッド
が開放してしまったときは、加圧された消火液が放出さ
れると共に、加圧送液装置が起動して火災でないことを
確認してポンプを停止するまでの間、散水が続けられ、
大きな水損事故となる問題がある。これに対し、スプリ
ンクラヘッドのほかに火災感知器を設置し、火災による
火災感知器の動作によりスプリンクラヘッドまで消火液
を充填し、更にスプリンクラヘッドが動作するときに散
水を行う予作動式(プレアクション式)スプリンクラ消火
設備は、スプリンクラヘッドへの配管内で空気が僅かに
加圧されていて、火災感知器が火災を検出し、かつ、ス
プリンクラヘッドが動作したとき、即ち、火災感知器と
スプリンクラヘッドとのＡＮＤ条件によってのみ消火液
が放出されるものであり、常時は配管内には加圧空気が
充填されているだけなので、スプリンクラヘッドへの衝
撃等による開放が発生しても水損事故にはならないとい
う特徴を有している。2. Description of the Related Art The most typical sprinkler fire extinguishing equipment will be described. Conventionally, various systems such as an open type, a closed type wet type, a dry type, and a pre-operation type have been used for sprinkler fire extinguishing equipment. The closed-type sprinkler fire extinguishing system always fills the end of the closed-type sprinkler head provided in each caution area with pressurized fire-extinguishing liquid, and can spray water simultaneously with fire detection. Equipment used in buildings, etc.
Since the pressurized fire extinguishing liquid is always filled up to the end of the pipe, the sprinkler head has a feature that the fire extinguishing liquid can be discharged simultaneously with the operation of detecting the fire.
However, if the sprinkler head is opened due to an accident such as being hit by an object, the pressurized fire extinguishing liquid is released, and the pump is stopped after confirming that the pressurized liquid sending device has started and it is not a fire Until you do, watering is continued,
There is a problem that causes a serious water damage accident. On the other hand, in addition to the sprinkler head, a fire detector is installed, the fire detector operates due to a fire, the fire extinguishing liquid is filled up to the sprinkler head, and water is sprayed when the sprinkler head operates. (Formula) Sprinkler fire extinguishing equipment, when the air is slightly pressurized in the piping to the sprinkler head, the fire detector detects a fire, and the sprinkler head operates, that is, the fire detector and the sprinkler head The fire extinguishing liquid is released only under the AND conditions described above, and the piping is always filled with pressurized air. Therefore, even if the sprinkler head is opened due to impact, etc., a water loss accident may occur. It has the feature that it must not be.
【０００３】[0003]
【発明が解決しようとする課題】しかし、これらの消火
設備は、二次側配管内が空気である場合だけでなく、常
時、開放弁の一次側と二次側の液圧に大きな差があると
きには、火災感知器動作に基づく開放弁の開放時には大
きい一次圧が瞬間的に二次側配管系に導入される結果、
大きなウォ−タ−ハンマ現象(異常昇圧)が発生してしま
い、上記、二次側配管系の機器部材の耐圧グレ−ドを低
下するのに不安が残っている。この発明は、従来の消火
設備のこのような種々の問題を解決するために提案され
たものであって、開放弁の上記開放時での弁体の開き速
度を緩やかとして過大な一次圧の導入が阻止され、ウォ
−タ−ハンマ現象を十分に防止できて二次側配管系の機
器部材の耐圧グレ−ドを安心して低下することを可能と
し、設備構成も簡単で安価な消火設備を提供するもので
ある。However, in these fire extinguishing systems, there is always a large difference in hydraulic pressure between the primary side and the secondary side of the opening valve, not only when the inside of the secondary side pipe is air. Sometimes, when the open valve is opened based on the fire detector operation, a large primary pressure is momentarily introduced into the secondary piping system,
A large water hammer phenomenon (abnormal pressurization) occurs, and there remains uneasiness in lowering the pressure-resistant grade of the above-mentioned equipment member of the secondary piping system. The present invention has been proposed in order to solve such various problems of the conventional fire extinguishing equipment, and introduces an excessive primary pressure by slowing the opening speed of the valve element when the opening valve is opened. Water hammer phenomenon can be sufficiently prevented, the pressure-resistant grade of the secondary piping system components can be reduced with ease, and a simple and inexpensive fire extinguishing system is provided. Is what you do.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
この発明は、一次側配管１６が消火液供給手段１３に、
二次側配管５が消火ヘッド４に、それぞれ接続された開
放弁６が設けられ、開放弁６は常態では閉鎖状態であ
り、火災現象を検出する火災検出手段１に基づく信号に
より開放状態となる消火設備において、開放弁６は、そ
の弁体１５に連動するピストン４６を有するシリンダ室
２０内を排液して減圧することにより開放される構成で
あり、開放弁６の開放当初にシリンダ室２０からの上記
排液を制限する排液制限装置Ｌを有している。According to the present invention, in order to solve the above-mentioned problems, the primary pipe 16 is provided with a fire extinguishing liquid supply means 13.
An open valve 6 is connected to the fire extinguishing head 4 with the secondary pipe 5 connected thereto, and the open valve 6 is normally closed and is opened by a signal based on the fire detecting means 1 for detecting a fire phenomenon. In the fire extinguishing system, the opening valve 6 is configured to be opened by draining and reducing the pressure in the cylinder chamber 20 having the piston 46 interlocking with the valve body 15. And a drainage limiting device L for limiting the drainage from the drainage.
【０００５】排液制限装置Ｌは、二次側配管５の液圧が
所定圧よりも低い初期圧になるとその排液制限を解除す
る解除装置Ｃを有している。[0005] The drainage restriction device L has a release device C that releases the drainage restriction when the hydraulic pressure in the secondary pipe 5 becomes lower than the predetermined pressure.
【０００６】[0006]
【作用】火災検出手段１の検出信号に基づきシリンダ室
２０から排液が行われてこれにより開放弁６は開かれる
が、開放弁６の上記開放当初では、排液制限装置Ｌによ
り上記排液量が制限されて開放弁６の弁体１５の開放は
緩やかとなる。これによって火災検出手段１の検出動作
による開放弁６の開放時での二次側配管５内の急激な液
圧上昇は防がれ、ウォ−タ−ハンマ現象の発生は抑止さ
れ、二次側配管系の機器部材の耐圧グレ−ドは十分低い
もので足り、従来の如き高圧圧力液に基づく機器部材の
破損も発生せず、設備コストの抑制もできる消火設備と
なった。The drain valve is drained from the cylinder chamber 20 based on the detection signal of the fire detecting means 1 and the release valve 6 is opened by the drain valve. The amount is limited, and the opening of the valve body 15 of the opening valve 6 becomes gentle. This prevents a sudden increase in the hydraulic pressure in the secondary pipe 5 when the release valve 6 is opened due to the detection operation of the fire detecting means 1, and suppresses the occurrence of a water hammer phenomenon, and the secondary side. It is sufficient that the pressure resistance grade of the equipment members of the piping system is sufficiently low, so that the equipment members are not damaged due to the high-pressure liquid as in the prior art, and the fire extinguishing equipment is capable of suppressing equipment costs.
【０００７】開放弁６が開放されて二次側配管５の液圧
が所定圧よりも低い初期圧になると、解除装置Ｃによっ
て排液制限装置Ｌの排液制限動作は解除され、以後二次
側配管５は所定圧の液圧となる。When the opening valve 6 is opened and the hydraulic pressure in the secondary pipe 5 becomes an initial pressure lower than a predetermined pressure, the releasing device C releases the drainage restricting operation of the drainage restricting device L. The side pipe 5 has a predetermined hydraulic pressure.
【０００８】[0008]
【実施例】以下、この発明の各実施例を、スプリンクラ
消火設備の場合について例示的に説明する。図１は、消
火設備の第１実施例におけるブロック図である。警戒地
区の火災現象を検出する火災検出手段としての差動式や
定温式等の火災感知器１は、電路２を介して受信盤３に
接続される。火災感知器１と同様に警戒地区の天井に設
けられた閉鎖型のスプリンクラヘッドの如き消火ヘッド
４は、二次側配管５を介して開放弁６の二次側７に接続
される。開放弁６の一次側８は一次側配管１６を介して
消火液供給手段としての加圧送液装置１３に接続されて
おり、同図で図示されている仕切弁９と、ポンプ１０
と、電路１１により受信盤３に接続されたモ−タ−１２
等のほか、図示されていない通常の逆止弁や圧力空気槽
等をこの加圧送液装置１３は備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to a sprinkler fire extinguishing system. FIG. 1 is a block diagram of a fire extinguishing system according to a first embodiment. A fire detector 1 of a differential type, a constant temperature type, or the like as a fire detecting means for detecting a fire phenomenon in a caution area is connected to a receiver 3 via an electric line 2. A fire-extinguishing head 4 such as a closed-type sprinkler head provided on the ceiling of the security area as well as the fire detector 1 is connected to a secondary side 7 of an opening valve 6 via a secondary-side pipe 5. The primary side 8 of the opening valve 6 is connected to a pressurized liquid supply device 13 as a fire extinguishing liquid supply means via a primary side pipe 16, and a gate valve 9 shown in FIG.
And a motor 12 connected to the receiver 3 by the electric circuit 11
In addition to this, the pressurized liquid sending device 13 includes a normal check valve, a pressure air tank, and the like, which are not shown.
【０００９】開放弁６は、弁座１４ａによって上記一次
側８と二次側７とに区分され、この弁座１４ａを開閉す
る弁体１５は、弁箱に嵌合されるピストン４６を兼ねて
いてその背部と弁箱とでシリンダ室２０に形成し、二次
側７内で弁座１４ａの外周側方に設けた弁座１４ｂによ
って入水検知室２２を形成し、弁体１５は、ばね１８に
よって弁座１４ａ、１４ｂを閉じるよう付勢される、所
謂減圧開のタイプであり、弁体１５には一次側８の液圧
の一部を導入するための小孔１９が明けられている。ま
た、この弁体１５は、調圧装置Ｒとしての調圧パイロッ
ト弁２１によって一次側８の液圧を所定圧に減圧調整し
て二次側７に供給するように、その開閉動作が制御され
る。The opening valve 6 is divided into the primary side 8 and the secondary side 7 by a valve seat 14a, and the valve body 15 for opening and closing the valve seat 14a also serves as a piston 46 fitted to a valve box. The water inlet detection chamber 22 is formed by a valve seat 14b provided on the outer peripheral side of the valve seat 14a in the secondary side 7, and the valve body 15 is provided with a spring 18 The valve body 15 is urged to close the valve seats 14a and 14b, so that the valve body 15 is provided with a small hole 19 for introducing a part of the hydraulic pressure on the primary side 8. The opening and closing operation of the valve element 15 is controlled such that the hydraulic pressure on the primary side 8 is reduced to a predetermined pressure by the pressure adjusting pilot valve 21 as the pressure adjusting device R and supplied to the secondary side 7. You.
【００１０】即ち、調圧パイロット弁２１は、シリンダ
室２０に排液管２３にて連通する操作室１７と、起動弁
２４を介して操作室１７をドレン管２５に通じる調圧弁
座２６と、フラム２９を有してばね２７によって調圧弁
座２６を開く方向に付勢された調圧弁体２８と、二次側
配管５に配管３１を介して連通する調圧室３０とを有し
ている。ドレン管２５にはシリンダ室２０からの排液量
を制限するための排液制限装置Ｌとしてのオリフィス５
３を設けている。That is, the pressure control pilot valve 21 includes an operation chamber 17 that communicates with the cylinder chamber 20 via a drain pipe 23, a pressure control valve seat 26 that communicates the operation chamber 17 with a drain pipe 25 via an activation valve 24, It has a pressure regulating valve body 28 having a flam 29 and urged by a spring 27 in a direction to open the pressure regulating valve seat 26, and a pressure regulating chamber 30 communicating with the secondary pipe 5 via a pipe 31. . The drain pipe 25 has an orifice 5 serving as a drainage restricting device L for restricting a drainage amount from the cylinder chamber 20.
3 are provided.
【００１１】入水検知室２２には、オリフィス３６のあ
るドレン管３７を接続し、このドレン管３７には開放弁
６の開放による昇圧を検知して受信盤３にこれを報知す
る圧力スイッチ３９を設けている。起動弁２４は、火災
感知器１の火災現象検出により動作する電動部４１によ
って開かれるように受信盤３によって制御される。電動
部４１は、モ−タや電磁ソレノイドによって構成され
る。二次側配管５の端末はオリフィス４３(二次側配管
５や消火ヘッド４等よりも高い位置に配置されている)
とドレン管４４を介して大気に開放している。A drain pipe 37 having an orifice 36 is connected to the water input detection chamber 22. The drain pipe 37 has a pressure switch 39 for detecting a pressure increase due to the opening of the opening valve 6 and notifying the receiving board 3 of the pressure increase. Provided. The start-up valve 24 is controlled by the receiving board 3 so as to be opened by a motor-driven unit 41 that operates by detecting a fire phenomenon of the fire detector 1. The electric unit 41 includes a motor and an electromagnetic solenoid. The end of the secondary pipe 5 is an orifice 43 (located at a position higher than the secondary pipe 5, the fire extinguishing head 4, and the like).
And a drain pipe 44 to open to the atmosphere.
【００１２】開放弁６が開放されて二次側配管５の液圧
が前記所定圧よりも低い初期圧に達したとき、以後、開
放弁６の開閉動作を本来の状態で行わせるべく、排液制
限装置Ｌであるオリフィス５３の排液制限動作を解除す
る解除装置Ｃとしての排水パイロット弁３２を設けてい
る。この排水パイロット弁３２は、ドレン管５４に開口
する排水弁座３４と、フラム３５を有してばね４０によ
って排水弁座３４を閉じる方向に付勢された排水弁体３
８と、起動弁２４の一次側に配管６０にて連通する排水
弁室４６と、配管３１を介して開放弁６の二次側７に連
通する開閉操作室４７とを有している。このように、開
放弁６の二次側７の液圧は、調圧室３０へ調圧パイロッ
ト弁２１を閉じる方向に、開閉操作室４７へは排水パイ
ロット弁３２を開く方向に、夫々導入されていて、二次
側７の液圧が上昇するとき、初期圧にて先ず排水パイロ
ット弁３２が開き、所定圧になると調圧パイロット弁２
１が閉じるように、夫々のばね４０、２７等が設定され
ている。When the opening valve 6 is opened and the hydraulic pressure in the secondary side pipe 5 reaches an initial pressure lower than the predetermined pressure, the opening and closing operation of the opening valve 6 is thereafter performed in an original state. A drainage pilot valve 32 is provided as a release device C that releases the drainage restriction operation of the orifice 53 that is the liquid restriction device L. The drainage pilot valve 32 includes a drainage valve seat 34 that opens to a drain pipe 54, and a drainage valve body 3 that has a flam 35 and is urged by a spring 40 in a direction to close the drainage valve seat 34.
8, a drain valve chamber 46 communicating with the primary side of the starting valve 24 via a pipe 60, and an opening / closing operation chamber 47 communicating with the secondary side 7 of the opening valve 6 via the pipe 31. As described above, the hydraulic pressure on the secondary side 7 of the opening valve 6 is introduced into the pressure regulating chamber 30 in the direction of closing the pressure regulating pilot valve 21 and into the opening / closing operation chamber 47 in the direction of opening the drainage pilot valve 32. When the hydraulic pressure on the secondary side 7 rises, the drainage pilot valve 32 is first opened at the initial pressure, and when a predetermined pressure is reached, the pressure-regulating pilot valve 2 is opened.
The respective springs 40, 27, etc. are set so that 1 is closed.
【００１３】次に上記実施例における動作を説明する。
起動弁２４は当初、閉じていて、開放弁６のシリンダ室
２０は、小孔１９から流入している一次側８の消火液に
より一次側８と同圧力で、弁体１５はばね１８により弁
座１４ａ、１４ｂに着座している。排水パイロット弁３
２はばね４０により排水弁座３４を閉じ、調圧パイロッ
ト弁２１は、ばね２７によって調圧弁座２６を開いてい
る。まず、消火ヘッド４、二次側配管５等の二次側配管
系統に無圧の消火液を充液しておく。この充液操作は、
加圧送液装置１３により開放弁６まで加圧している状態
とし、次に仕切弁９を閉じ、起動弁２４を開いてシリン
ダ室２０内の消火液が排液管２３、調圧弁座２６、起動
弁２４、排液管２５を経て二次側７に流入し、減圧され
ることで開放弁６を開放可能な状態とする。そして、仕
切弁９を徐々に開放し、消火液をゆっくり開放弁６の二
次側配管系統に流入させる。消火液は、開放弁６の二次
側７から二次側配管５、消火ヘッド４へ流れ、オリフィ
ス４３を越えてドレン管４４に流れ落ちる。消火液がオ
リフィス４３を越えている時点で起動弁２４を閉じ、開
放弁６を閉止状態にする。Next, the operation of the above embodiment will be described.
The starting valve 24 is initially closed, the cylinder chamber 20 of the opening valve 6 is at the same pressure as the primary side 8 by the fire extinguishing liquid of the primary side 8 flowing from the small hole 19, and the valve body 15 is opened by the spring 18. They are seated on seats 14a and 14b. Drainage pilot valve 3
2 closes the drain valve seat 34 by the spring 40, and the pressure regulating pilot valve 21 opens the pressure regulating valve seat 26 by the spring 27. First, a non-pressure fire extinguishing liquid is filled in a secondary piping system such as the fire extinguishing head 4 and the secondary piping 5. This filling operation
The pressurized liquid sending device 13 is pressurized to the opening valve 6, then the gate valve 9 is closed, the starting valve 24 is opened, and the fire extinguishing liquid in the cylinder chamber 20 is drained by the drain pipe 23, the pressure regulating valve seat 26, and the starting. It flows into the secondary side 7 via the valve 24 and the drainage pipe 25, and is decompressed so that the opening valve 6 can be opened. Then, the gate valve 9 is gradually opened, and the fire extinguishing liquid slowly flows into the secondary piping system of the opening valve 6. The fire extinguishing liquid flows from the secondary side 7 of the release valve 6 to the secondary side pipe 5 and the fire extinguishing head 4, flows over the orifice 43, and flows down to the drain pipe 44. When the fire extinguishing liquid has passed the orifice 43, the starting valve 24 is closed, and the opening valve 6 is closed.
【００１４】これにより、二次側配管系に作用していた
圧力液は、オリフィス４３を介してドレン管４４へ排出
されて二次側配管系は無圧に充液された状態になる。こ
のようにして二次側配管５、消火ヘッド４等の二次側配
管系統は充液され、オリフィス４３を用いて大気連通の
割合を微小にしておくことで、消火液の大気への拡散を
抑え、無圧充液状態を長期に保つことができる。火災感
知器１が動作していない常態では各警戒地区の開放弁６
の一次側８の消火液は小孔１９からシリンダ室２０に入
り、上記のように開放弁６は閉じてその弁体１５は監視
状態となっている。二次側配管５等の消火液は無加圧で
充液されているので、監視時では消火液の排出損失は無
い。As a result, the pressure fluid acting on the secondary piping system is discharged to the drain pipe 44 via the orifice 43, and the secondary piping system is charged without pressure. In this way, the secondary pipe system such as the secondary pipe 5 and the fire extinguishing head 4 is filled with liquid, and by using the orifice 43 to keep the proportion of air communication small, diffusion of the fire extinguishing liquid into the atmosphere is reduced. It is possible to maintain the pressureless liquid state for a long period of time. In the normal condition where the fire detector 1 is not operating, the open valves 6 of each warning area
The fire extinguishing liquid on the primary side 8 enters the cylinder chamber 20 through the small hole 19, and as described above, the opening valve 6 is closed and the valve body 15 is in the monitoring state. Since the fire extinguishing liquid in the secondary pipe 5 and the like is filled without pressurization, there is no loss of fire extinguishing liquid during monitoring.
【００１５】この状態において火災が発生して火災感知
器１が動作すると、火災信号が受信盤３に伝達される。
受信盤３ではこの火災信号により電動部４１を動作させ
起動弁２４を開けるので、開放弁６のシリンダ室２０の
消火液は排液管２３、操作室１７、起動弁２４を経てオ
リフィス５３により排液量は制限されつつ排液され、シ
リンダ室２０内はゆっくり減圧するので開放弁６はゆっ
くり開かれ、入水検知室２２の液圧が高まり圧力スイッ
チ３９が動作して受信盤３に開放弁６の開放を報知す
る。一方、図示しない圧力空気槽等の加圧手段により一
次側８の圧力液は二次側７を経て二次側配管５と配管３
１へ流れる。このようにシリンダ室２０からの排液はオ
リフィス５３によって抑制されるので、開放弁６の弁体
１５の開放は緩やかとなり、火災感知器１の検出動作に
よる開放弁６の開放時での二次側配管５内の急激な液圧
上昇は十分防がれ、ウォ−タ−ハンマ現象の発生は抑止
されることになる。In this state, when a fire occurs and the fire detector 1 operates, a fire signal is transmitted to the receiver 3.
In the receiving panel 3, the electric motor 41 is operated by the fire signal to open the starting valve 24, so that the fire extinguishing liquid in the cylinder chamber 20 of the opening valve 6 is discharged by the orifice 53 through the drain pipe 23, the operating chamber 17 and the starting valve 24. The liquid amount is drained while being restricted, and the inside of the cylinder chamber 20 is slowly depressurized, so that the opening valve 6 is opened slowly, the hydraulic pressure in the water input detection chamber 22 increases, the pressure switch 39 operates, and the opening valve 6 is opened to the receiving panel 3. Announce the opening of On the other hand, the pressure liquid on the primary side 8 is passed through the secondary side 7 by a pressurizing means such as a pressure air tank (not shown), and the secondary side pipe 5 and the pipe 3
Flow to 1. As described above, since the drainage from the cylinder chamber 20 is suppressed by the orifice 53, the opening of the valve body 15 of the opening valve 6 becomes gentle, and the secondary operation at the time of opening of the opening valve 6 by the detection operation of the fire detector 1 is performed. A sudden increase in the liquid pressure in the side pipe 5 is sufficiently prevented, and the occurrence of the water hammer phenomenon is suppressed.
【００１６】二次側配管５の液圧が上昇して所定圧に到
る前に初期圧に達すると開閉操作室４７に加わるこの初
期圧により排水弁体３８が上動して排水弁座３４は開放
され、操作室１７を介してのシリンダ室２０の排液は、
配管６０、排水弁座３４を経てドレン管５４から行わ
れ、今までのようなオリフィス５３による制限をうける
ことはない。従って、初期圧以後は開放弁６の弁体１５
の開き動作は所定通り速やかで二次側７の液圧調整も速
やかとなる。If the hydraulic pressure of the secondary pipe 5 rises and reaches an initial pressure before reaching a predetermined pressure, the initial pressure applied to the opening and closing operation chamber 47 causes the drain valve body 38 to move upward and the drain valve seat 34 to move upward. Is opened, and the liquid discharged from the cylinder chamber 20 via the operation chamber 17 is
The operation is performed from the drain pipe 54 through the pipe 60 and the drain valve seat 34, and is not limited by the orifice 53 as in the past. Therefore, after the initial pressure, the valve element 15 of the release valve 6
The opening operation is quick as specified, and the adjustment of the hydraulic pressure on the secondary side 7 is also quick.
【００１７】二次側７の液圧が所定圧に高まると調圧室
３０にかかるこの所定圧によりフラム２９と調圧弁体２
８は下方へ押されて調圧弁座２６は閉動作し、上記シリ
ンダ室２０からの排液は抑えられて弁体１５は弁座１４
ａ、１４ｂに向かって移動し、開放弁６は閉動作する。
調圧室３０に導入されている二次側７の液圧が調圧パイ
ロット弁２１の設定圧を下回るとばね２７によって調圧
弁体２８は戻されて調圧弁座２６は開き、シリンダ室２
０の消火液は再び上記のようにドレン管５４から排液さ
れて一次側８の液圧によって弁体１５が戻って弁座１４
ａ、１４ｂは開き、一次側８の消火液が二次側７に導入
され、二次側７の液圧は回復し、このようにして二次側
７の液圧は一次側８の消火液の液圧に比べ、消火活動に
必要な所定圧に減圧調整される。When the hydraulic pressure on the secondary side 7 increases to a predetermined pressure, the predetermined pressure applied to the pressure regulating chamber 30 causes the flam 29 and the pressure regulating valve body 2 to move.
8 is pushed downward, the pressure regulating valve seat 26 is closed, the drainage from the cylinder chamber 20 is suppressed, and the valve body 15 is moved to the valve seat 14.
a and 14b, and the opening valve 6 closes.
When the hydraulic pressure on the secondary side 7 introduced into the pressure regulating chamber 30 falls below the set pressure of the pressure regulating pilot valve 21, the pressure regulating valve body 28 is returned by the spring 27, the pressure regulating valve seat 26 is opened, and the cylinder chamber 2 is opened.
The fire extinguishing liquid of 0 is discharged again from the drain pipe 54 as described above, and the valve body 15 returns by the hydraulic pressure of the primary side 8 to return to the valve seat 14.
a, 14b are opened, the fire extinguishing liquid on the primary side 8 is introduced into the secondary side 7, and the hydraulic pressure on the secondary side 7 recovers, and thus the hydraulic pressure on the secondary side 7 is reduced to the fire extinguishing liquid on the primary side 8 The pressure is adjusted to a predetermined pressure required for the fire extinguishing activity as compared with the hydraulic pressure of the fire.
【００１８】火災地点の温度がさらに上昇すると、消火
ヘッド４が開放して二次側配管５内の消火液が放出さ
れ、二次側７の大きい液圧低下が図示しない圧力空気槽
の圧力スイッチにより検知されると加圧送液装置１３の
ポンプ１０は起動され、火災が消火されるまでこの放出
は続けられる。消火ヘッド４等二次側配管５に消火液が
所定圧で充液されているので、消火ヘッド４の開放動作
と同時に消火液は放出され、消火動作に遅れは無い。こ
こで加圧送液装置１３のポンプ１０の起動は、上記加圧
手段の連続加圧時間を検知することによって行ってもよ
い。When the temperature at the fire point further rises, the fire extinguishing head 4 is opened and the fire extinguishing liquid in the secondary pipe 5 is discharged, and a large decrease in hydraulic pressure on the secondary side 7 causes a pressure switch of a pressure air tank (not shown). Is detected, the pump 10 of the pressurized liquid sending device 13 is activated, and this discharge is continued until the fire is extinguished. Since the fire extinguishing liquid is filled in the secondary pipe 5 such as the fire extinguishing head 4 at a predetermined pressure, the fire extinguishing liquid is discharged simultaneously with the opening operation of the fire extinguishing head 4, and there is no delay in the fire extinguishing operation. Here, the pump 10 of the pressurized liquid sending device 13 may be started by detecting the continuous pressurizing time of the pressurizing unit.
【００１９】以上の他、二次側配管５を予作動式のよう
に常時空気で加圧しておくためのコンプレッサはこの実
施例では不要となり、設備コストは安価となった。二次
側配管５や消火ヘッド４等の二次側配管系の液圧は、調
圧装置Ｒにより一次側８に対し低圧に調圧されているの
で、この二次側配管系の機器部材の耐圧グレ−ドは十分
低いもので足り、従来の如き高圧圧力液に基づく機器部
材の破損も発生せず、設備コストの抑制もできる消火設
備となった。火災監視時では、消火ヘッド４が衝撃等で
開放した場合に放出される無圧の消火液は僅かであり、
従来の閉鎖型スプリンクラ消火設備のような大きな水損
事故は防止できる。In addition to the above, a compressor for constantly pressurizing the secondary pipe 5 with air, such as a pre-operation type, becomes unnecessary in this embodiment, and the equipment cost is reduced. Since the hydraulic pressure of the secondary piping system such as the secondary piping 5 and the fire extinguishing head 4 is regulated to a low pressure with respect to the primary side 8 by the pressure regulator R, the equipment members of the secondary piping system A sufficiently low pressure-resistant grade was sufficient, and the fire extinguishing equipment was able to suppress the equipment cost without causing breakage of equipment members due to the high-pressure liquid as in the prior art. At the time of fire monitoring, a small amount of non-pressure fire extinguishing liquid is released when the fire extinguishing head 4 is opened due to impact or the like.
Large water damage accidents such as those in conventional closed-type sprinkler fire extinguishing equipment can be prevented.
【００２０】図２はこの考案の第２実施例を示すブロッ
ク図である。この第２実施例では、図１でドレン管２５
に設けているオリフィス５３に代えて排水パイロット弁
３２の排水弁体３８に、シリンダ室２０からの排液を制
限する排液制限装置Ｌとしての小孔５５を設けたもので
あり、これ以外の構造は前記図１の第１実施例と同一で
あるので共に同一の符号を付してその構造説明は省略し
た。FIG. 2 is a block diagram showing a second embodiment of the present invention. In the second embodiment, in FIG.
Is provided with a small hole 55 as a drainage limiting device L for limiting drainage from the cylinder chamber 20 in the drain valve body 38 of the drain pilot valve 32 in place of the orifice 53 provided in Since the structure is the same as that of the first embodiment shown in FIG. 1, the same reference numerals are given to them, and the description of the structure is omitted.
【００２１】火災感知器１の検出による開放弁６の開放
当初では開放弁６のシリンダ室２０の消火液は排液管２
３、操作室１７、起動弁２４、配管５６を経て排水パイ
ロット弁３２の排水弁体３８の小孔５５により排液量は
制限されつつドレン管５４から排液されるので、開放弁
６の弁体１５の開放は前記第１実施例と同様に緩やかと
なり、火災感知器１の検出動作による開放弁６の開放時
での二次側配管５内の急激な液圧上昇は十分防がれ、ウ
ォ−タ−ハンマ現象の発生は抑止される。二次側配管５
の液圧が上昇して所定圧に到る前に初期圧に達すると前
記第１実施例と同様に排水弁体３８が上動して排水弁座
３４は開放され、操作室１７を介してのシリンダ室２０
の排液は、配管５６、排水弁座３４を経てドレン管５４
から今までのような小孔５５による制限をうけることな
く行われ、従って、初期圧以後は開放弁６の弁体１５の
開き動作は所定通り速やかで二次側７の液圧上昇も速や
かとなる。At the beginning of the opening of the opening valve 6 by the detection of the fire detector 1, the fire extinguishing liquid in the cylinder chamber 20 of the opening valve 6
3. Since the liquid is discharged from the drain pipe 54 through the operation chamber 17, the start valve 24, and the pipe 56 while the discharge amount is restricted by the small hole 55 of the drain valve body 38 of the drain pilot valve 32, the valve of the release valve 6 The opening of the body 15 becomes gradual similarly to the first embodiment, and a rapid rise in the liquid pressure in the secondary pipe 5 when the opening valve 6 is opened by the detection operation of the fire detector 1 is sufficiently prevented. The occurrence of the water hammer phenomenon is suppressed. Secondary side piping 5
If the hydraulic pressure of the fluid rises and reaches the initial pressure before reaching the predetermined pressure, the drain valve body 38 moves upward and the drain valve seat 34 is opened similarly to the first embodiment, and the drain valve seat 34 is opened via the operation chamber 17. Cylinder chamber 20
Drained through a pipe 56 and a drain valve seat 34.
Therefore, the opening operation of the valve body 15 of the opening valve 6 is performed as promptly after the initial pressure and the fluid pressure on the secondary side 7 is rapidly increased after the initial pressure. Become.
【００２２】以上の他、この第２実施例は、二次側配管
５を予作動式のように常時空気で加圧しておくためのコ
ンプレッサは不要となり、設備コストは安価で、二次側
配管５や消火ヘッド４等の二次側配管系の液圧は、調圧
装置Ｒにより一次側８に対し低圧に調圧されているの
で、この二次側配管系の機器部材の耐圧グレ−ドは十分
低いもので足り、従来の如き高圧圧力液に基づく機器部
材の破損も発生せず、設備コストの抑制も可能で火災監
視時では、消火ヘッド４が衝撃等で開放した場合に放出
される無圧の消火液は僅かであり、従来の閉鎖型スプリ
ンクラ消火設備のような大きな水損事故は防止できると
いう前記第１実施例と同一の効果を有している。In addition to the above, the second embodiment eliminates the need for a compressor for constantly pressurizing the secondary pipe 5 with air, as in the pre-actuated type. Since the hydraulic pressure of the secondary side piping system such as the fire extinguishing head 5 and the fire extinguishing head 4 is regulated to a low pressure with respect to the primary side 8 by the pressure regulator R, the pressure resistance grade of the equipment member of this secondary side piping system is reduced. Is sufficiently low, no breakage of the equipment members based on the high-pressure liquid is caused as in the prior art, and the equipment cost can be suppressed. During fire monitoring, the fire extinguishing head 4 is released when the fire extinguishing head 4 is opened by an impact or the like. The amount of the non-pressure fire extinguishing liquid is small, and has the same effect as that of the first embodiment in that a large water damage accident such as in a conventional closed sprinkler fire extinguishing system can be prevented.
【００２３】図３はこの考案の第３実施例を示すブロッ
ク図である。この実施例ではシリンダ室２０からの排液
量を制限するための排液制限装置Ｌとして、一次側配管
１６から消火液を切替弁６２を経てドレン管２５に所定
量取り込み、シリンダ室２０からこのドレン管２５への
排液流量を抑制した一次液取込手段Ｉを用いている。即
ち、一次側液取込手段Ｉは、一次側配管１６を、配管６
１を経て切替弁６２からオリフィス５８のある配管６０
によって起動弁２４の一次側に接続し、起動弁２４の二
次側を、オリフィス５３を経てドレン管２５に接続する
構成である。FIG. 3 is a block diagram showing a third embodiment of the present invention. In this embodiment, as a drainage restricting device L for restricting the amount of drainage from the cylinder chamber 20, a predetermined amount of fire extinguishing liquid is taken into the drain pipe 25 from the primary pipe 16 via the switching valve 62, and is discharged from the cylinder chamber 20. The primary liquid intake means I in which the drainage flow rate to the drain pipe 25 is suppressed is used. That is, the primary liquid intake means I connects the primary pipe 16 to the pipe 6
1 through the switching valve 62 to the pipe 60 having the orifice 58
Thus, the starting valve 24 is connected to the primary side, and the secondary side of the starting valve 24 is connected to the drain pipe 25 via the orifice 53.
【００２４】二次側配管５の液圧が初期圧に達すると
き、以後、開放弁６の開閉動作を本来の状態で行わせる
べく、排液制限装置Ｌである一次側液取込手段Ｉの排液
制限動作を解除する解除装置Ｃとして例示した切替弁６
２は、一次側配管１６に配管６１にて連通する切替室４
６と、配管６０とオリフィス５８とを介して切替室４６
を起動弁２４の一次側に通じる切替弁座４８と、フラム
４９を有してばね５０によって切替弁座４８を開く方向
に付勢された切替弁体５１と、配管３１に連通する切替
操作室５２とを有している。そして二次側７の液圧が上
昇するとき、初期圧にて先ず切替弁６２が閉じ、所定圧
になると調圧パイロット弁２１が閉じるように、夫々の
ばね５０、２７等が設定されている。又、調圧弁座２
６、オリフィス５８、オリフィス５３の夫々の開口面積
は、夫々の排液量を、Ｑ1、Ｑ2、ｑとして、Ｑ2＞ｑ＞
Ｑ1の関係となるようなどに設定されている。When the hydraulic pressure in the secondary pipe 5 reaches the initial pressure, the opening and closing operation of the release valve 6 is performed in the original state. Switching valve 6 exemplified as release device C for releasing the drainage restriction operation
2 is a switching chamber 4 that communicates with the primary side pipe 16 via a pipe 61.
6, a switching chamber 46 via a pipe 60 and an orifice 58.
A switching valve seat 48 communicating with the primary side of the starting valve 24, a switching valve body 51 having a flam 49 and urged by a spring 50 to open the switching valve seat 48, and a switching operation chamber communicating with the pipe 31. 52. When the hydraulic pressure on the secondary side 7 rises, the respective springs 50, 27 and the like are set so that the switching valve 62 is first closed at the initial pressure, and the pressure regulating pilot valve 21 is closed when the predetermined pressure is reached. . Also, pressure regulating valve seat 2
6. The opening area of each of the orifice 58 and the orifice 53 is such that Q 2 >q>, where Q 1 , Q 2 , and q are the respective drainage amounts.
It is set in such as to be a relationship of Q 1.
【００２５】当初、切替弁６２、調圧パイロット弁２１
は、何れもばね５０、２７により開かれていて、前記第
１実施例と同一の各操作により二次側配管系統に充液を
行う。一次側８の消火液は、配管６１から切替弁６０の
切替室４６と調圧パイロット弁２１の操作室１７に一次
側８と同一の液圧で充液されている。火災感知器１の検
出動作により起動弁２４が開くと、一次側８の消火液は
配管６１、切替室４６、オリフィス５８、起動弁２４、
オリフィス５３を経て排液され、シリンダ室２０の消火
液は排液管２３、操作室１７、調圧弁座２６、起動弁２
４、オリフィス５３を経て排液され、シリンダ室２０内
が減圧されて弁体１５は離座する。Initially, the switching valve 62 and the pressure regulating pilot valve 21
Are opened by the springs 50 and 27, and the secondary pipe system is charged by the same operations as those in the first embodiment. The fire extinguishing liquid on the primary side 8 is filled from the pipe 61 into the switching chamber 46 of the switching valve 60 and the operation chamber 17 of the pressure regulating pilot valve 21 at the same hydraulic pressure as the primary side 8. When the starting valve 24 is opened by the detection operation of the fire detector 1, the fire extinguishing liquid on the primary side 8 is supplied to the pipe 61, the switching chamber 46, the orifice 58, the starting valve 24,
The fire-extinguishing liquid in the cylinder chamber 20 is drained through the orifice 53, and the fire-extinguishing liquid in the cylinder chamber 20 is discharged from the drain pipe 23, the operation chamber 17, the pressure regulating valve seat 26, and the starting valve 2.
4. The liquid is discharged through the orifice 53, the pressure in the cylinder chamber 20 is reduced, and the valve body 15 is separated.
【００２６】上記排液動作の際、排液端末であるオリフ
ィス５３の排液量ｑは、オリフィス５８の排液量Ｑ2よ
りも小さいので、起動弁２４の一次側において液圧が発
生して調圧弁座２６からの排液はオリフィス５８の一次
側に発生する液圧の上昇によって制限され、排液管２３
から操作室１７を経て調圧弁座２６より排出されるシリ
ンダ室２０内の減圧速度は減速される。従って開放弁６
の弁体１５の開放は緩やかとなり、火災感知器１の検出
動作による開放弁６の開放時での二次側配管５内の急激
な液圧上昇は十分防がれ、ウォ−タ−ハンマ現象の発生
は抑止される。そして、一次側８の液圧が高い時ほど一
次側液の液取込量も増してこれによるシリンダ室２０か
らの排液制限作用は大きくなり、異常昇圧の抑止も一層
十分に行われる。[0026] During the drainage operation, drainage volume q of the orifice 53 is a drainage device is smaller than the drainage amount Q 2 of the orifice 58, the hydraulic pressure is generated in the primary side of the start valve 24 The drainage from the pressure regulating valve seat 26 is limited by a rise in the hydraulic pressure generated on the primary side of the orifice 58, and the drainage pipe 23
The pressure reduction rate in the cylinder chamber 20 discharged from the pressure regulating valve seat 26 through the operation chamber 17 through the operation chamber 17 is reduced. Therefore, the opening valve 6
The opening of the valve body 15 becomes slow, and a rapid rise in the hydraulic pressure in the secondary pipe 5 when the opening valve 6 is opened due to the detection operation of the fire detector 1 is sufficiently prevented, and the water-hammer phenomenon occurs. Is suppressed. The higher the hydraulic pressure on the primary side 8 is, the larger the liquid intake amount of the primary side liquid is, and the greater the effect of restricting drainage from the cylinder chamber 20 is, thereby more sufficiently suppressing abnormal pressure rise.
【００２７】二次側配管５の液圧が上昇して所定圧に到
る前に初期圧に達すると切替操作室５２に加わるこの初
期圧により切替弁体５１が下動して切替弁座４８は閉じ
て一次側８からの排液はなくなり、操作室１７を介して
のシリンダ室２０の排液は今までのようなオリフィス５
８からの一次側８の排液による制限をうけることなく行
われる。従って、初期圧以後は開放弁６の弁体１５の開
き動作は所定通り速やかで二次側７の液圧調整が速やか
となる。If the hydraulic pressure in the secondary pipe 5 rises and reaches the initial pressure before reaching the predetermined pressure, the switching valve body 51 moves downward by this initial pressure applied to the switching operation chamber 52 and the switching valve seat 48 Is closed and the drainage from the primary side 8 disappears, and the drainage of the cylinder chamber 20 via the operation chamber 17 is replaced with the orifice 5 as before.
This is done without being restricted by the drainage of the primary side 8 from 8. Therefore, after the initial pressure, the opening operation of the valve element 15 of the release valve 6 is promptly performed as predetermined, and the adjustment of the hydraulic pressure on the secondary side 7 is prompt.
【００２８】以上の他、この第３実施例は、二次側配管
５を予作動式のように常時空気で加圧しておくためのコ
ンプレッサは不要となり、設備コストは安価で、二次側
配管５や消火ヘッド４等の二次側配管系の液圧は、調圧
装置Ｒにより一次側８に比べ低圧に調圧されているの
で、この二次側配管系の機器部材の耐圧グレ−ドは十分
低いもので足り、従来の如き高圧圧力液に基づく機器部
材の破損も発生せず、設備コストの抑制も可能で火災監
視時では、消火ヘッド４が衝撃等で開放した場合に放出
される無圧の消火液は僅かであり、従来の閉鎖型スプリ
ンクラ消火設備のような大きな水損事故は防止できると
いう前記第１実施例と同一の効果を有している。尚、以
上の各実施例では、開放弁６と調圧装置Ｒである調圧パ
イロット弁２１とは別体であるが、これらを一体に形成
してもよい。前記各実施例において、火災監視のため、
二次側配管５等に無加圧の消火液を充液しているが、二
次側配管５の端末を通常の排液弁として、二次側を微圧
に加圧してもよく、この場合には二次側配管５の漏れや
消火ヘッド４の開放を検出することができる。また、火
災検出手段は、各実施例において火災感知器１を用いて
いるが、消火ヘッド４の動作を検出する流水や水の接触
による電気的な接点等を用いてもよい。In addition to the above, in the third embodiment, a compressor for constantly pressurizing the secondary pipe 5 with air as in the pre-operation type is not required, the equipment cost is low, and the secondary pipe 5 is low. Since the hydraulic pressure of the secondary piping system such as 5 and the fire extinguishing head 4 is regulated to a lower pressure than the primary side 8 by the pressure regulator R, the pressure resistance grade of the equipment members of the secondary piping system is reduced. Is sufficiently low, no breakage of the equipment members based on the high-pressure liquid is caused as in the prior art, and the equipment cost can be suppressed. During fire monitoring, the fire extinguishing head 4 is released when the fire extinguishing head 4 is opened by an impact or the like. The amount of the non-pressure fire extinguishing liquid is small, and has the same effect as that of the first embodiment in that a large water damage accident such as in a conventional closed sprinkler fire extinguishing system can be prevented. In each of the above embodiments, the opening valve 6 and the pressure regulating pilot valve 21 as the pressure regulating device R are separate bodies, but they may be formed integrally. In each of the above embodiments, for fire monitoring,
Although the non-pressurized fire extinguishing liquid is filled in the secondary pipe 5 and the like, the secondary side may be pressurized to a slight pressure by using a terminal of the secondary pipe 5 as a normal drain valve. In this case, it is possible to detect leakage of the secondary pipe 5 and opening of the fire extinguishing head 4. Further, the fire detector uses the fire detector 1 in each embodiment, but may use running water for detecting the operation of the fire extinguishing head 4 or an electrical contact by contact with water.
【００２９】泡消火設備の場合は、図４に例示するよう
に、仕切弁９の二次側配管１０１と開放弁６の一次側配
管１６との間に泡水溶液生成装置１０２を介装すればよ
い。例示した泡水溶液生成装置１０２は、仕切弁９の二
次側配管１０１から分岐した送水管１０３によって分流
した加圧水を、例えば加圧式の泡原液槽１０４のダイヤ
フラム(図示は省略した)の外側室に送りこみ、このダイ
ヤフラムの内部は送液管１０５によって混合器１０６の
薬剤吸い込み側に接続させて、混合器１０６の二次側を
開放弁６の一次側配管１６に接続するものである。送水
管１０３からの加圧水によってダイヤフラムから押し出
された泡原液は、混合器１０６において仕切弁９の二次
側配管１０１の水と混合して指定濃度の泡水溶液として
開放弁６の一次側配管１６に送りこまれる。混合薬剤消
火設備の場合は、上記図４の泡原液槽１０４を、薬剤の
泡原液槽に構成すればよく、薬剤として例えば炭酸カリ
ウムを主成分とする溶液等による強化液などを用いるこ
とができる。In the case of the foam fire extinguishing equipment, as shown in FIG. 4, a foam aqueous solution generating device 102 may be interposed between the secondary pipe 101 of the gate valve 9 and the primary pipe 16 of the opening valve 6. Good. The exemplified aqueous foam solution generating apparatus 102 transmits pressurized water diverted by a water supply pipe 103 branched from the secondary pipe 101 of the gate valve 9 to, for example, an outer chamber of a diaphragm (not shown) of a pressurized foam stock solution tank 104. The inside of the diaphragm is connected to the medicine suction side of the mixer 106 by a liquid sending pipe 105, and the secondary side of the mixer 106 is connected to the primary pipe 16 of the opening valve 6. The foam concentrate extruded from the diaphragm by the pressurized water from the water supply pipe 103 is mixed with the water in the secondary pipe 101 of the gate valve 9 in the mixer 106 to form a foamed aqueous solution having a specified concentration on the primary pipe 16 of the opening valve 6. Sent in. In the case of a mixed chemical fire extinguishing system, the foam concentrate tank 104 in FIG. 4 may be configured as a foam concentrate solution tank, and for example, a fortifying solution such as a solution containing potassium carbonate as a main component can be used as the medicine. .
【００３０】[0030]
【発明の効果】以上のようにこの発明によれば、開放弁
６の開放当初では、排液制限装置Ｌによりシリンダ室２
０内の排液が制限されて開放弁６の弁体１５の開放は緩
やかとなる。これによって火災検出手段１の検出動作に
よる開放弁６の開放時での二次側配管５内の急激な液圧
上昇は防がれ、ウォ−タ−ハンマ現象の発生は抑止さ
れ、二次側配管系の機器部材の耐圧グレ−ドは十分低い
もので足り、従来の如き高圧圧力液に基づく機器部材の
破損も発生せず、設備コストの抑制もできる消火設備と
なった。As described above, according to the present invention, when the release valve 6 is opened, the cylinder chamber 2 is controlled by the drainage restricting device L.
The drainage within 0 is restricted, and the opening of the valve body 15 of the opening valve 6 becomes gentle. This prevents a sudden increase in the hydraulic pressure in the secondary pipe 5 when the release valve 6 is opened due to the detection operation of the fire detecting means 1, and suppresses the occurrence of a water hammer phenomenon, and the secondary side. It is sufficient that the pressure resistance grade of the equipment members of the piping system is sufficiently low, so that the equipment members are not damaged due to the high-pressure liquid as in the prior art, and the fire extinguishing equipment is capable of suppressing equipment costs.
【００３１】開放弁６が開放されて二次側配管５の液圧
が所定圧よりも低い初期圧になると、解除装置Ｃによっ
て排液制限装置Ｌの排液制限動作は解除され、以後、二
次側配管５の液圧は所定圧となって消火動作に支障しな
い。When the opening valve 6 is opened and the hydraulic pressure in the secondary pipe 5 becomes an initial pressure lower than a predetermined pressure, the releasing device C releases the drainage restricting operation of the drainage restricting device L. The hydraulic pressure of the secondary pipe 5 becomes a predetermined pressure and does not hinder the fire extinguishing operation.
【図１】この発明の第１実施例を示すブロック図であ
る。FIG. 1 is a block diagram showing a first embodiment of the present invention.
【図２】この発明の第２実施例を示すブロック図であ
る。FIG. 2 is a block diagram showing a second embodiment of the present invention.
【図３】この発明の第３実施例を示すブロック図であ
る。FIG. 3 is a block diagram showing a third embodiment of the present invention.
【図４】泡消火設備に置き換えた実施例における要部を
示すブロック図である。FIG. 4 is a block diagram showing a main part in an embodiment in which a foam fire extinguishing system is replaced.
１ 火災感知器(火災検出手段) ４ スプリンクラヘッド ５ 二次側配管 ６ 開放弁 １３ 加圧送液装置(消火液供給手段) １５ 弁体 １６ 一次側配管 ２０ シリンダ室 ２８ 調圧弁体 ４６ ピストン ５３ オリフィス(排液制限装置Ｌ) ５５ 小孔(排液制限装置Ｌ） DESCRIPTION OF SYMBOLS 1 Fire detector (fire detection means) 4 Sprinkler head 5 Secondary piping 6 Opening valve 13 Pressurized liquid feeder (Fire extinguishing fluid supply means) 15 Valve 16 Primary piping 20 Cylinder chamber 28 Pressure regulating valve 46 Piston 53 Orifice ( Drainage restriction device L) 55 Small hole (Drainage restriction device L)
Claims (2)
側配管が消火ヘッドに、それぞれ接続された開放弁が設
けられ、開放弁は常態では閉鎖状態であり、火災現象を
検出する火災検出手段に基づく信号により開放状態とな
る消火設備において、開放弁は、その弁体に連動するピ
ストンを有するシリンダ室内を排液して減圧することに
より開放される構成であり、開放弁の開放当初にシリン
ダ室からの上記排液を制限する排液制限装置を有してい
ることを特徴とする消火設備。An open valve connected to a fire extinguishing solution supply means on a primary side pipe and a fire extinguishing head on a secondary side pipe is provided, and the open valve is normally in a closed state. In a fire extinguishing system that is opened by a signal based on a detection unit, an opening valve is configured to be opened by draining a cylinder chamber having a piston interlocking with the valve body and reducing the pressure. A fire extinguishing system, further comprising a drainage limiting device for limiting the drainage from the cylinder chamber.
所定圧よりも低い初期圧のときはその排液制限を解除す
る解除装置を有していることを特徴とする請求項１の消
火設備。2. The drainage restriction device according to claim 1, further comprising a release device that releases the drainage restriction when the hydraulic pressure of the secondary pipe is an initial pressure lower than a predetermined pressure. 1 fire extinguisher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03109798A JP3079443B2 (en) | 1991-04-15 | 1991-04-15 | Fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03109798A JP3079443B2 (en) | 1991-04-15 | 1991-04-15 | Fire extinguishing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04317670A JPH04317670A (en) | 1992-11-09 |
| JP3079443B2 true JP3079443B2 (en) | 2000-08-21 |
Family
ID=14519490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03109798A Expired - Fee Related JP3079443B2 (en) | 1991-04-15 | 1991-04-15 | Fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3079443B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4607021B2 (en) * | 2006-01-16 | 2011-01-05 | リンナイ株式会社 | Mist sauna equipment |
-
1991
- 1991-04-15 JP JP03109798A patent/JP3079443B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04317670A (en) | 1992-11-09 |
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