JP2850295B2 - Sprinkler fire extinguishing equipment - Google Patents
Sprinkler fire extinguishing equipmentInfo
- Publication number
- JP2850295B2 JP2850295B2 JP8031397A JP8031397A JP2850295B2 JP 2850295 B2 JP2850295 B2 JP 2850295B2 JP 8031397 A JP8031397 A JP 8031397A JP 8031397 A JP8031397 A JP 8031397A JP 2850295 B2 JP2850295 B2 JP 2850295B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- water
- fire extinguishing
- branch pipe
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明はスプリンクラ消火
設備に関するものである。The present invention relates to a sprinkler fire extinguishing system.
【０００２】[0002]
【従来の技術】従来のスプリンクラ消火設備として、ス
プリンクラヘッドの末端まで消火用水が常時満たされて
いるいわゆる湿式のスプリンクラ消火設備、一斉開放弁
とも云われる開閉弁の二次側配管に常時は加圧気体を満
たすようにしておき、スプリンクラヘッドの作動による
加圧気体の圧力低下で前記開閉弁が開弁するいわゆる乾
式のスプリンクラ消火設備や、併設される火災感知器の
火災感知によって前記開閉弁が開弁される予作動式のス
プリンクラ設備が使用されている。2. Description of the Related Art As a conventional sprinkler fire extinguishing system, a so-called wet sprinkler extinguishing system in which fire extinguishing water is constantly filled up to the end of a sprinkler head, and a secondary pipe of an on-off valve, also called a simultaneous release valve, is always pressurized. The open / close valve is opened when the pressure of the pressurized gas decreases due to the operation of the sprinkler head, and the so-called dry-type sprinkler fire extinguishing equipment is opened. Pre-actuated sprinkler equipment that is valved is used.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来の乾式や
予作動式のスプリンクラ消火設備では、スプリンクラヘ
ッドが作動して開閉弁が開弁したとき、または、火災感
知器が火災を感知して開閉弁が開弁したとき、開閉弁の
二次側配管に圧力水が急速に流入して配管内を早い速度
で流れるため、二次側配管の圧が急激に上昇することと
なるとともに、ウオータハンマー現象が発生し、二次側
配管に強い衝撃が加わる問題がある。However, in the conventional dry-type or pre-operation type sprinkler fire extinguishing equipment, the sprinkler head operates and the on-off valve opens, or the fire detector detects a fire and opens or closes. When the valve opens, pressurized water rapidly flows into the secondary pipe of the on-off valve and flows through the pipe at a high speed, so that the pressure of the secondary pipe increases rapidly and the water hammer This causes a problem that a strong impact is applied to the secondary pipe.
【０００４】また、湿式のスプリンクラ消火設備では、
低層階になるほど高度差による水頭圧により配管系に高
い圧が常時加わることになる。[0004] In a wet-type sprinkler fire extinguishing system,
As the floor becomes lower, higher pressure is constantly applied to the piping system due to the head pressure due to the difference in altitude.
【０００５】このため、従来のスプリンクラ消火設備で
は、圧の急激な上昇やウオータハンマーに対応するた
め、また、常時高い圧が加わっているのに対応するた
め、配管、巻きだし管等、配管機材を耐圧の高いものを
使用しなければならないので設備が高価となると共に、
設計段階および工事段階でこのような配慮が必要とな
り、特に工事段階において熟練者を必要とした。[0005] Therefore, in the conventional sprinkler fire extinguishing equipment, piping equipment such as piping, unwinding pipe, etc., in order to cope with a sudden increase in pressure and a water hammer, and to cope with high pressure being applied constantly. The equipment must be expensive because high pressure-resistant ones must be used.
Such considerations were required at the design stage and the construction stage, and in particular, the construction stage required skilled personnel.
【０００６】また、湿式や乾式のスプリンクラ消火設備
では、スプリンクラヘッドに誤ってものが当たりヘッド
が開栓すると消火用水が放水されてしまう問題がある。Further, in a wet or dry sprinkler fire extinguishing system, there is a problem that fire extinguishing water is discharged when the sprinkler head hits an erroneous head and the head is opened.
【０００７】[0007]
【課題を解決するための手段】この発明は上記の点に鑑
み、配管内を高圧の消火用水が早い速度で流れることが
なく、二次側配管の圧が急激に上昇したり、ウオータハ
ンマー現象が発生して、二次側配管に強い衝撃が加わわ
ったりすることのない、また、スプリンクラヘッドに誤
ってものが当たってヘッドが開栓しても消火用水が放水
されないスプリンクラ消火設備を目的とするものであ
る。SUMMARY OF THE INVENTION In view of the above, the present invention does not allow high-pressure fire-extinguishing water to flow in a pipe at a high speed, but causes a sudden rise in the pressure of a secondary pipe and a water hammer phenomenon. The sprinkler fire extinguishing system does not cause strong impact on the secondary side piping due to the occurrence of fire, and does not discharge water for fire extinguishing even if the sprinkler head hits the sprinkler head and the head is opened. Is what you do.
【０００８】このため本発明のスプリンクラ消火設備
は、給水管に接続され給水管から消火用水が供給されて
いるとともに、閉鎖型スプリンクラヘッドが接続された
支管の基端側に、常時は閉弁状態にあり火災時に開弁制
御される第１の開閉弁が設けられ、かつ前記第１の開閉
弁の二次側支管内の消火用水は無加圧状態であることを
特徴とするものである。For this reason, the sprinkler fire extinguishing system of the present invention is connected to a water supply pipe and supplied with fire extinguishing water from the water supply pipe, and is always closed at the base end side of the branch pipe to which the closed type sprinkler head is connected. And a first on-off valve that is controlled to open in the event of a fire is provided, and the fire extinguishing water in the secondary branch pipe of the first on-off valve is in a non-pressurized state.
【０００９】また、給水管に接続され給水管から消火用
水が供給されているとともに、閉鎖型スプリンクラヘッ
ドが接続された支管の基端側に、常時は閉弁状態にあり
火災時に開弁制御される第１の開閉弁が設けられ、前記
第１の開閉弁の二次側支管に常時は閉弁状態の第２の開
閉弁が設けられ、かつ前記二次側支管内の消火用水は無
加圧状態であることを特徴とするものである。In addition, fire extinguishing water is supplied from the water supply pipe connected to the water supply pipe, and the base end of the branch pipe to which the closed type sprinkler head is connected is normally in a valve-closed state and is controlled to open during a fire. A first on-off valve is provided, and a second on-off valve which is normally closed is provided on a secondary branch pipe of the first on-off valve, and fire extinguishing water in the secondary branch pipe is not added. It is characterized by a pressure state.
【００１０】また、給水管に接続され給水管から消火用
水が供給されているとともに、閉鎖型スプリンクラヘッ
ドが接続された支管の基端側に、常時は閉弁状態にあり
火災時に開弁制御される第１の開閉弁が設けられ、前記
第１の開閉弁の二次側支管に常時は閉弁状態の第２の開
閉弁が設けられたスプリンクラ消火設備であって、前記
第１の開閉弁を開弁して前記二次側支管に加圧された消
火用水を供給し、前記加圧された消火用水の供給後に前
記第１の開閉弁を閉弁し、ついで前記第２の開閉弁を短
時間開弁して前記二次側支管内の消火用水の圧力を無加
圧状態にするようにしたことを特徴とするものである。In addition, fire extinguishing water is supplied from the water supply pipe connected to the water supply pipe, and the base end of the branch pipe to which the closed type sprinkler head is connected is normally in a valve closed state and is controlled to open during a fire. A sprinkler fire extinguishing facility, wherein a first on-off valve is provided, and a second on-off valve which is normally closed is provided on a secondary side branch pipe of the first on-off valve, wherein the first on-off valve is provided. And supplying pressurized fire extinguishing water to the secondary branch pipe, closing the first on-off valve after supplying the pressurized fire extinguishing water, and then closing the second on-off valve. The valve is opened for a short time so that the pressure of the fire-extinguishing water in the secondary side branch pipe is set to a non-pressurized state.
【００１１】[0011]
【作用】第１の開閉弁の二次側の支管の消火用水は無加
圧状態であるので、第１の開閉弁が開弁したときには支
管には僅かな水しか流入せず、支管の水圧は上昇するも
のの急速な水の流れが生じず、急激な圧力上昇が抑制さ
れるとともに支管などの配管系に大きな衝撃を与えるこ
とがなく、ウオータハンマーの発生も抑制することがで
きる。The fire extinguishing water in the branch pipe on the secondary side of the first on-off valve is in a non-pressurized state. Therefore, when the first on-off valve is opened, only a small amount of water flows into the branch pipe, and the water pressure in the branch pipe is reduced. Although the water rises, a rapid flow of water does not occur, so that a rapid pressure rise is suppressed, a large impact is not exerted on a piping system such as a branch pipe, and the generation of a water hammer can be suppressed.
【００１２】また、第１開閉弁の二次側の消火用水は無
加圧状態であるので、スプリンクラヘッドに誤ってもの
が当たってヘッドが開栓しても消火用水が二次側の圧に
よって押し出されることがなくなり、水損を防止でき
る。Further, since the fire extinguishing water on the secondary side of the first on-off valve is in a non-pressurized state, even if the sprinkler head erroneously hits the sprinkler head and the head is opened, the fire extinguishing water is reduced by the pressure on the secondary side. It is not pushed out, and water damage can be prevented.
【００１３】また、第一の開閉弁の二次側の支管に第２
の開閉弁を接続したので、この第２の開閉弁を操作する
ことにより、二次側の消火用水の圧を簡単に無加圧状態
にすることができる。A second branch pipe of the first on-off valve is provided with a second pipe.
By operating this second on-off valve, the pressure of the secondary-side fire extinguishing water can be easily reduced to a non-pressurized state.
【００１４】[0014]
【発明の実施の形態】以下、この発明の一実施の形態を
図面により説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
【００１５】図面は高層ビル１の最上階を主に示した本
発明設備の概略図で、２は地下水槽、３は給水ポンプ、
４は防災センターなどに設けられた制御盤である。The drawing is a schematic view of the equipment of the present invention mainly showing the top floor of a high-rise building 1, 2 is a groundwater tank, 3 is a water supply pump,
Reference numeral 4 denotes a control panel provided at a disaster prevention center or the like.
【００１６】５１、５２、５３・・・は水槽で、屋上の
水槽５１は所定の落差圧を得るために高架水槽とし、水
槽５２、５３・・・も所定の落差圧を得るために所定高
さに当たる階毎に設けられ、その一次側は給水用の開閉
弁６１、６２、６３・・・と給水管７を介して給水ポン
プ３に接続される。またその二次側は、高層ビル１の所
定階を縦方向に貫通する共通の主管８１、８２、８３・
・・と接続され、更に分岐され各階毎に横方向に設けら
れた支管９に流水検知器１０と支管９内の消火用水を常
時無加圧の状態としておくための第１の開閉弁１１とを
介して接続される。Are water tanks, the rooftop water tank 51 is an elevated water tank for obtaining a predetermined head pressure, and the water tanks 52, 53. The primary side is connected to the water supply pump 3 via the water supply on-off valves 61, 62, 63... And the water supply pipe 7. The secondary side thereof has a common main pipe 81, 82, 83.
And a first opening / closing valve 11 for keeping the running water detector 10 and the fire extinguishing water in the branch pipe 9 always in a non-pressurized state. Connected via
【００１７】１２は閉鎖型のスプリンクラヘッドで、巻
きだし管１３を介して各階の支管９に取り付けられる。Reference numeral 12 denotes a closed type sprinkler head, which is attached to a branch pipe 9 on each floor via an unwinding pipe 13.
【００１８】１４は各支管９の端末に設けられた圧力変
化検出手段としての圧力スイッチで、圧力逃がし用の第
２の開閉弁１５を介して排水管１６と接続される。Reference numeral 14 denotes a pressure switch provided at the end of each branch pipe 9 as pressure change detecting means, and is connected to a drain pipe 16 via a second on-off valve 15 for releasing pressure.
【００１９】１７はスプリンクラヘッド１２に併設され
た火災感知器で、所定温度でオンしまたそれよりも充分
低い温度でオフするように構成され、制御盤４を介して
開閉弁１１の開閉が制御されるように接続されている。Reference numeral 17 denotes a fire detector attached to the sprinkler head 12, which is turned on at a predetermined temperature and turned off at a temperature sufficiently lower than the predetermined temperature. The opening and closing of the on-off valve 11 is controlled via the control panel 4. Connected to be.
【００２０】１８は水槽５１、５２、５３・・・に設け
られた水位計で、所定水位以下になると制御盤４を介し
て開閉弁６１、６２、６３・・・の開閉が制御されるよ
うに接続されている。Reference numeral 18 denotes water level meters provided in the water tanks 51, 52, 53,... So that the opening and closing of the on-off valves 61, 62, 63,. It is connected to the.
【００２１】また上記水槽５１、５２、５３・・・を所
定高さ毎に配置する間隔は、スプリンクラヘッド１２の
開栓動作に必要な圧力を最低１ｋｇｆ／ｃｍ2 とし、ま
た配管および巻きだし管に安価で作業性のよい耐圧を５
ｋｇｆ／ｃｍ2 のものを使用するとすれば、再下位の水
槽を地上５０ｍに、以下５０ｍ高くなる毎に高位置の水
槽を設け、最上位の屋上に設ける高架水槽を１０ｍ以上
のものが選ばれる。言い換えれば、各階の高さが３．５
ｍであれば、約１４階毎に１個の水槽を設け、各水槽は
それよりも３階低い階以下の系統を負担する。The intervals at which the water tanks 51, 52, 53... Are arranged at predetermined heights are such that the pressure required for opening the sprinkler head 12 is at least 1 kgf / cm 2 , 5 with low pressure and good workability
Assuming that a tank of kgf / cm 2 is used, the lower tank is placed 50 m above the ground, a water tank at a higher position is provided every 50 m below, and an elevated water tank provided on the topmost roof is 10 m or more. . In other words, the height of each floor is 3.5
If m, one water tank is provided for about every 14 floors, and each water tank bears a system below the third floor.
【００２２】また上記水槽５１、５２、５３・・・の底
部には開閉弁１９を介して排水管２０が接続されてい
る。Are connected to the bottoms of the water tanks 51, 52, 53,.
【００２３】以下上記設備の動作を説明する。The operation of the above equipment will be described below.
【００２４】火災監視に先立ち開閉弁６１、６２、６３
・・・と各階に設けられた開閉弁１１を開き、給水ポン
プ３を起動し、各水槽５１、５２、５３・・・、主管８
１、８２、８３・・・、各階の支管９およびスプリンク
ラヘッド１２に給水し、水槽５１、５２、５３・・・の
水位が所定水位になるまで給水する。そして開閉弁６
１、６２、６３・・・と各階に設けられた開閉弁１１を
閉め、開閉弁１５を短時間開き支管９の圧力水の一部を
排水管１６に逃がして支管９の消火用水を加圧状態から
無加圧の状態にする。この支管９の消火用水が無加圧状
態になったか否かは圧力スイッチ１４を利用すると簡単
に知ることができる。Prior to the fire monitoring, the on-off valves 61, 62, 63
, And the opening / closing valve 11 provided on each floor is opened, the water supply pump 3 is activated, and each of the water tanks 51, 52, 53,.
, 82, 83, ..., water is supplied to the branch pipe 9 and the sprinkler head 12 on each floor, and water is supplied until the water levels of the water tanks 51, 52, 53, ... reach a predetermined water level. And on-off valve 6
1, 62, 63..., The on-off valves 11 provided on each floor are closed, and the on-off valves 15 are opened for a short time to release a part of the pressure water of the branch pipe 9 to the drain pipe 16 to pressurize the fire extinguishing water of the branch pipe 9. Change the state from no pressure to no pressure. Whether or not the fire extinguishing water in the branch pipe 9 is in a non-pressurized state can be easily known by using the pressure switch 14.
【００２５】このような状態で例えば最上階に火災が発
生すると、その初期段階で火災感知器１７が動作し、制
御盤４を介して所属の開閉弁１１が開きスプリンクラヘ
ッド１２に水槽５１よりの落差で定まる所定圧が加わ
り、圧力スイッチ１４により支管９が加圧された状態が
検出され、制御盤４にプリアラームが表示される。そし
て火災により更に高熱になると閉鎖型スプリンクラヘッ
ド１２が開栓され消火水が火源に放水され、流水検知器
１０が動作し制御盤４に放水地区が表示されると共に給
水ポンプ３が起動される。放水により水槽５１の水位が
低下すると、水位計１８が動作し制御盤４を介して所属
の開閉弁６１が開かれ水槽５１に消火水が補給され、火
源に充分な消火水が放水され続け消火される。そして火
災感知器１７がオフして開閉弁１１が閉じられ、放水が
停止される。When a fire occurs on the top floor, for example, in such a state, the fire detector 17 is operated in the initial stage, and the associated on-off valve 11 is opened via the control panel 4 to connect the sprinkler head 12 to the water tank 51 from the water tank 51. A state in which the branch pipe 9 is pressurized by the pressure switch 14 is applied when a predetermined pressure determined by the head is applied, and a pre-alarm is displayed on the control panel 4. When the heat becomes higher due to the fire, the closed type sprinkler head 12 is opened and the fire extinguishing water is discharged to the fire source, the running water detector 10 operates, the water discharge area is displayed on the control panel 4, and the water supply pump 3 is started. . When the water level in the water tank 51 drops due to water discharge, the water level gauge 18 operates, the associated on-off valve 61 is opened via the control panel 4, fire water is supplied to the water tank 51, and sufficient fire water continues to be discharged to the fire source. Fire extinguished. Then, the fire detector 17 is turned off, the on-off valve 11 is closed, and the water discharge is stopped.
【００２６】また保守点検に際して、点検階の開閉弁１
１と開閉弁１５を開けば、スプリンクラヘッド１２を開
栓しなくとも設備の機能試験ができる。また開閉弁１１
の開閉と開閉弁１５の短時間の開動作とを制御盤４に設
けられたプログラムにより自動的に行い、開閉弁１１が
開かれたときの支管９の圧力増加を圧力スイッチ１４の
出力を介して制御盤４に表示するようにすれば、開閉弁
１１の機能試験、配管の状態等の試験が行えるととも
に、試験終了後は直ちに支管９の消火用水を監視時の無
加圧状態にできる簡単なシステムが得られる。Also, at the time of maintenance and inspection, the on-off valve 1 on the inspection floor
By opening the on-off valve 1 and the on-off valve 15, the function test of the equipment can be performed without opening the sprinkler head 12. On-off valve 11
The opening and closing of the valve and the short-time opening operation of the on-off valve 15 are automatically performed by a program provided on the control panel 4, and the pressure increase of the branch pipe 9 when the on-off valve 11 is opened is determined via the output of the pressure switch 14. If displayed on the control panel 4, the function test of the on-off valve 11, the test of the condition of the piping, etc. can be performed, and the fire extinguishing water in the branch pipe 9 can be immediately put into a non-pressurized state at the time of monitoring after the test is completed. System is obtained.
【００２７】なお、上記実施例では、給水ポンプ３の起
動を流水検知器１０で、また開閉弁６１、６２、６３・
・・の開閉を水位計１８で行うようにしたが、これらの
起動や開閉を圧力スイッチ１４で行うようにしてもよいIn the above embodiment, the water supply pump 3 is started by the flowing water detector 10, and the on-off valves 61, 62, 63,.
The opening and closing of... Is performed by the water level gauge 18, but the activation and opening and closing thereof may be performed by the pressure switch 14.
【００２８】[0028]
【効果】この発明によれば、第１の開閉弁の二次側の支
管の消火用水は無加圧状態であるので、第１の開閉弁が
開弁したときには支管には僅かな水しか流入せず、支管
の消火用水の圧は上昇するものの急速な水の流れが生じ
ず、急激な圧力上昇が抑制されるとともに支管などの配
管系に大きな衝撃を与えることがなく、ウオータハンマ
ーの発生も抑制することができる。このため、支管や巻
きだし管などの二次側の配管機材に耐圧の低いものを使
用することも可能となり、設備を安価に構成することも
可能となる。According to the present invention, since the fire extinguishing water of the branch pipe on the secondary side of the first on-off valve is in a non-pressurized state, when the first on-off valve is opened, only a small amount of water flows into the branch pipe. Although the pressure of fire fighting water in the branch pipes rises, rapid flow of water does not occur, which suppresses a rapid rise in pressure and does not cause a large impact on piping systems such as branch pipes, and the occurrence of water hammer Can be suppressed. For this reason, it is also possible to use low-pressure-resistant piping equipment on the secondary side, such as a branch pipe or an unwinding pipe, and it is also possible to configure the equipment at low cost.
【００２９】また、第１開閉弁の二次側の消火用水は無
加圧状態であるので、スプリンクラヘッドに誤ってもの
が当たってヘッドが開栓しても消火用水が二次側の圧に
よって押し出されることがなくなり、水損を防止でき
る。Also, since the fire extinguishing water on the secondary side of the first on-off valve is in a non-pressurized state, even if the sprinkler head erroneously hits the sprinkler head and the head is opened, the fire extinguishing water is reduced by the pressure on the secondary side. It is not pushed out, and water damage can be prevented.
【００３０】また、第一の開閉弁の二次側の支管に第２
の開閉弁を接続したので、この第２の開閉弁を操作する
ことにより、二次側の消火用水の圧を簡単に無加圧状態
にすることができる。A second branch pipe of the first on-off valve is provided with a second pipe.
By operating this second on-off valve, the pressure of the secondary-side fire extinguishing water can be easily reduced to a non-pressurized state.
【図１】この発明によるスプリンクラ消火設備の一実施
の形態の概略図である。FIG. 1 is a schematic view of one embodiment of a sprinkler fire extinguishing system according to the present invention.
１：高層ビル、 ２：地下水槽、 ３：給水ポンプ、 ４：制御盤、 ５１、５２、５３：水槽、 ６１、６２、６３：開閉弁、 ７：給水管、 ８１、８２、８３：主管 ９：支管、 １０：流水検知器、 １１：第１の開閉弁、 １２：閉鎖型スプリンクラヘッド、 １３：巻きだし配管、 １４：圧力スイッチ、 １５：第２の開閉弁、 １６：排水管、 １７：火災感知器、 １８：水位計、 １９：開閉弁、 ２０：排水管。 1: high-rise building, 2: groundwater tank, 3: water supply pump, 4: control panel, 51, 52, 53: water tank, 61, 62, 63: open / close valve, 7: water supply pipe, 81, 82, 83: main pipe 9 : Branch pipe, 10: running water detector, 11: first open / close valve, 12: closed type sprinkler head, 13: unwinding pipe, 14: pressure switch, 15: second open / close valve, 16: drain pipe, 17: Fire detector, 18: water level gauge, 19: open / close valve, 20: drain pipe.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田山 雄史 東京都千代田区九段南４丁目７番３号 能美防災株式会社内 審査官 原 光明 (56)参考文献 特開 昭60−174161（ＪＰ，Ａ) 特開 昭60−129058（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) A62C 35/00 - 39/00──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yushi Tayama 4-73-3 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. Examiner Mitsuaki Hara (56) References JP-A-60-174161 (JP, A Japanese Patent Application Laid-Open No. Sho 60-129058 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) A62C 35/00-39/00
Claims (5)
供給されているとともに、閉鎖型スプリンクラヘッドが
接続された支管の基端側に、常時は閉弁状態にあり火災
時に開弁制御される第１の開閉弁が設けられ、かつ前記
第１の開閉弁の二次側支管内の消火用水は無加圧状態で
あることを特徴とするスプリンクラ消火設備。1. A fire extinguishing water is supplied from a water supply pipe connected to a water supply pipe, and a valve is normally closed at a base end side of a branch pipe to which a closed type sprinkler head is connected, and the valve is controlled to be opened in a fire. A sprinkler fire extinguishing facility, wherein a first on-off valve is provided, and the fire extinguishing water in a secondary branch pipe of the first on-off valve is in a non-pressurized state.
供給されているとともに、閉鎖型スプリンクラヘッドが
接続された支管の基端側に、常時は閉弁状態にあり火災
時に開弁制御される第１の開閉弁が設けられ、前記第１
の開閉弁の二次側支管に常時は閉弁状態の第２の開閉弁
が設けられ、かつ前記二次側支管内の消火用水は無加圧
状態であることを特徴とするスプリンクラ消火設備。2. A fire extinguishing water is supplied from a water supply pipe connected to a water supply pipe, and a valve is normally closed at a base end side of a branch pipe to which a closed type sprinkler head is connected, and valve opening control is performed in a fire. A first on-off valve is provided.
A sprinkler fire extinguishing system, wherein a second on-off valve which is normally closed is provided in a secondary branch pipe of the on-off valve, and the fire extinguishing water in the secondary branch pipe is in a non-pressurized state.
供給されているとともに、閉鎖型スプリンクラヘッドが
接続された支管の基端側に、常時は閉弁状態にあり火災
時に開弁制御される第１の開閉弁が設けられ、前記第１
の開閉弁の二次側支管に常時は閉弁状態の第２の開閉弁
が設けられたスプリンクラ消火設備であって、前記第１
の開閉弁を開弁して前記二次側支管に加圧された消火用
水を供給し、前記加圧された消火用水の供給後に前記第
１の開閉弁を閉弁し、ついで前記第２の開閉弁を短時間
開弁して前記二次側支管内の消火用水の圧力を無加圧状
態にするようにしたことを特徴とするスプリンクラ消火
設備。3. A fire extinguishing water is supplied from a water supply pipe connected to a water supply pipe, and a valve is normally closed at a base end side of a branch pipe to which a closed type sprinkler head is connected, and the valve is controlled to open during a fire. A first on-off valve is provided.
A sprinkler fire extinguishing system in which a second on-off valve which is normally closed is provided on a secondary branch pipe of the on-off valve of the first aspect.
Open the on-off valve to supply pressurized fire-extinguishing water to the secondary side branch pipe, close the first on-off valve after supplying the pressurized fire-extinguishing water, and then close the second on-off valve. A sprinkler fire extinguishing system, characterized in that the on-off valve is opened for a short time so that the pressure of the fire extinguishing water in the secondary side branch pipe is reduced.
次側支管が配設されている場所には火災感知器が配設さ
れ、前記火災感知器が火災を感知したときに前記第１の
開閉弁が連動して開弁制御されることを特徴とする請求
項１ないし請求項３のいずれかに記載のスプリンクラ消
火設備。4. A fire detector is provided at a place where a secondary branch pipe to which the sprinkler head is connected is provided, and the first on-off valve is provided when the fire detector detects a fire. The sprinkler fire extinguishing equipment according to any one of claims 1 to 3, wherein the valve opening control is performed in conjunction with the control.
圧力を監視する圧力監視手段が接続されていることを特
徴とする請求項１ないし請求項４のいずれかに記載のス
プリンクラ消火設備。5. The secondary branch pipe according to claim 1, wherein pressure monitoring means for monitoring a pressure in the secondary branch pipe is connected to the secondary branch pipe. Sprinkler fire extinguishing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8031397A JP2850295B2 (en) | 1997-03-31 | 1997-03-31 | Sprinkler fire extinguishing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8031397A JP2850295B2 (en) | 1997-03-31 | 1997-03-31 | Sprinkler fire extinguishing equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11023090A Division JP2952423B2 (en) | 1990-04-27 | 1990-04-27 | Sprinkler fire extinguisher with multiple water tanks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH105366A JPH105366A (en) | 1998-01-13 |
| JP2850295B2 true JP2850295B2 (en) | 1999-01-27 |
Family
ID=13714785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8031397A Expired - Fee Related JP2850295B2 (en) | 1997-03-31 | 1997-03-31 | Sprinkler fire extinguishing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2850295B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000061238A1 (en) | 1999-04-09 | 2000-10-19 | Gengo Matsuoka | Wet type sprinkler system |
| GB2451487A (en) * | 2007-08-01 | 2009-02-04 | Project Fire Engineers Ltd | Fire sprinkler system |
| CN103537037A (en) * | 2012-07-17 | 2014-01-29 | 全龙浩 | Multi-point control passive automatic start-stop fire fighting system |
-
1997
- 1997-03-31 JP JP8031397A patent/JP2850295B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH105366A (en) | 1998-01-13 |
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