JP2013034532A - Automatic valve apparatus - Google Patents

Automatic valve apparatus Download PDF

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JP2013034532A
JP2013034532A JP2011170939A JP2011170939A JP2013034532A JP 2013034532 A JP2013034532 A JP 2013034532A JP 2011170939 A JP2011170939 A JP 2011170939A JP 2011170939 A JP2011170939 A JP 2011170939A JP 2013034532 A JP2013034532 A JP 2013034532A
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valve
automatic valve
switch
pressure
test water
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Hiroshi Ibaraki
博 茨木
Masahiro Nenoki
正浩 根之木
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Hochiki Corp
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Hochiki Corp
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Abstract

PROBLEM TO BE SOLVED: To credibly spray water when a fire occurs by remotely monitoring whether a test gate valve is fully and certainly opened.SOLUTION: The test gate valve 14 includes an open/close detection switch 46 that turns on a switch contact at a fully opened position and turns off the switch contact at a closed position deviated from the fully opened position. The switch contact of the open/close detection switch 46 is inserted into and connected to a signal line 44 extending from a fire prevention receiving panel 36 connected to a pressure switch 28. When the test gate valve 14 is at the closed position deviated from the fully opened position and the switch contact of the open/close detection switch 46 is turned off, the fire prevention receiving panel 36 detects the disconnection of the signal line and informs that the test gate valve 14 is not at the fully opened position.

Description

本発明は、トンネル等に設置された水噴霧ノズルに消火用水を加圧供給して噴霧させる自動弁装置に関する。
The present invention relates to an automatic valve device that sprays water by applying pressure to a water spray nozzle installed in a tunnel or the like under pressure.

従来、自動車専用道路のトンネルには、トンネル内で発生する火災事故から人身及び車両を守るため、非常用設備が設置されている。このような非常用設備としては、火災の監視と通報のため火災検知器や非常電話が設けられ、火災の消火や延焼防止のために消火栓装置やトンネル防護のための水噴霧ヘッドから水を噴霧させる自動弁装置が設けられる。   Conventionally, an emergency facility has been installed in a tunnel for an automobile exclusive road in order to protect a person and a vehicle from a fire accident occurring in the tunnel. Such emergency equipment includes a fire detector and emergency telephone for fire monitoring and reporting, and sprays water from a fire hydrant device and a water spray head for tunnel protection to extinguish the fire and prevent fire spread. An automatic valve device is provided.

自動弁装置は消火栓装置と同様に５０メートル間隔で設置され、１台の自動弁装置は５メートル間隔に配置した複数の水噴霧ヘッドから散水する機能を有する。   Like the fire hydrant device, the automatic valve device is installed at intervals of 50 meters, and one automatic valve device has a function of spraying water from a plurality of water spray heads arranged at intervals of 5 meters.

図３は従来の自動弁装置の概略構成を示している。図３において、自動弁装置１０は、自動弁１２、テスト制水弁１４、止め弁１６、パイロット弁１８、手動起動弁２０、圧力調整弁２２、自動排水弁２４、テスト放水弁２６及び圧力スイッチ２８を備える。自動弁１２の一次側には給水管３０が接続され、ポンプ設備からの加圧水が供給される。テスト制水弁１４の２次側にはトンネル内に設置した複数の水噴霧ヘッド３２がヘッド配管３４により接続される。   FIG. 3 shows a schematic configuration of a conventional automatic valve device. 3, the automatic valve device 10 includes an automatic valve 12, a test water control valve 14, a stop valve 16, a pilot valve 18, a manual start valve 20, a pressure adjustment valve 22, an automatic drain valve 24, a test water discharge valve 26, and a pressure switch. 28. A water supply pipe 30 is connected to the primary side of the automatic valve 12 to supply pressurized water from the pump equipment. A plurality of water spray heads 32 installed in the tunnel are connected to the secondary side of the test water control valve 14 by a head pipe 34.

トンネル内で火災が検知された場合の自動弁装置１０の水噴霧動作は、火災検知に基づき防災受信盤３６が電動弁を用いたパイロット弁１８に放水起動信号を送信しての遠隔的に開制御する。パイロット弁１８が開くと、一次側の加圧水が止め弁１６、パイロット弁１８、圧力調整弁２２を介して自動弁１２のシリンダ室１２ａに供給され、ピストン１２ｂを左側にストロークして、弁体１２ｃを弁座からリフトして開放し、二次側に規定圧力に調圧された加圧消火用水を供給し、水噴霧ヘッド３２からトンネル内に放水させる。   The water spraying operation of the automatic valve device 10 when a fire is detected in the tunnel is remotely opened when the disaster prevention receiving board 36 transmits a water discharge start signal to the pilot valve 18 using an electric valve based on the fire detection. Control. When the pilot valve 18 is opened, the primary pressurized water is supplied to the cylinder chamber 12a of the automatic valve 12 through the stop valve 16, the pilot valve 18, and the pressure regulating valve 22, and the piston 12b is stroked to the left side, thereby the valve body 12c. Is lifted from the valve seat to be opened, and pressurized fire-fighting water adjusted to a specified pressure is supplied to the secondary side, and water is discharged from the water spray head 32 into the tunnel.

またトンネル内の非常用設備は、半年又は１年に一度、定期点検が実施される。その中で自動弁装置１０の点検は、点検員がトンネル内に出向いて自動弁１２の二次側に設けているテスト用制水弁１４をハンドル操作により全閉位置に操作し、テスト放水弁２６を開操作することで、自動弁１２の二次側から排水系に至るテスト放水用の経路を準備し、この状態で防災受信盤３６からの放水起動信号により自動弁装置１０を起動して水噴霧ヘッド３２から実放水することなく排水系にテスト放水し、自動弁１２の二次側に加圧水の流水があると圧力スイッチ２８がオンし、オン信号を防災受信盤３６に送信して圧力正常を報知させることで、自動弁１２の動作、圧力調整弁２２による自動弁１２の２次側の自動調圧機能、圧力スイッチ２８の動作を含む動作性能の確認ができる。   The emergency facilities in the tunnel are regularly inspected once every six months or once a year. Among them, the inspection of the automatic valve device 10 is performed by operating a test water control valve 14 provided on the secondary side of the automatic valve 12 to the fully closed position by operating a steering wheel. 26 is opened to prepare a test water discharge path from the secondary side of the automatic valve 12 to the drainage system. In this state, the automatic valve device 10 is activated by a water discharge start signal from the disaster prevention receiving board 36. When the test water is discharged from the water spray head 32 to the drainage system without the actual water discharge, and there is a flow of pressurized water on the secondary side of the automatic valve 12, the pressure switch 28 is turned on, and an ON signal is transmitted to the disaster prevention receiving board 36 to By notifying normality, the operation performance including the operation of the automatic valve 12, the automatic pressure adjusting function of the secondary side of the automatic valve 12 by the pressure adjusting valve 22, and the operation of the pressure switch 28 can be confirmed.

テスト放水による動作性能が圧力スイッチ２８のオン信号から確認できたら、パイロット弁１８を閉じて自動弁１２を全閉に戻す。続いて、テスト放水弁２６を閉操作し、テスト制水弁１４を全開位置に操作して点検を終了する。この際、自動弁２４の２次側からテスト放水弁２６間にある消火用水は、圧力低下に伴い自動排水弁２４が開くことでドレインに排水される。   When the operation performance by the test water discharge can be confirmed from the ON signal of the pressure switch 28, the pilot valve 18 is closed and the automatic valve 12 is fully closed. Subsequently, the test water discharge valve 26 is closed, the test water control valve 14 is moved to the fully open position, and the inspection is completed. At this time, the fire extinguishing water between the secondary side of the automatic valve 24 and the test water discharge valve 26 is drained to the drain by opening the automatic drain valve 24 as the pressure decreases.

図４は図３の圧力スイッチ２８を取り出して示した回路図であり、スイッチ接点２８ａは導入圧力が設定圧力未満の場合は図示のようにオフしており、テスト放水による加圧水の導入で設定圧力以上になるとスイッチ接点２８ａがオンし、防災受信盤３６にオン信号を送る。   FIG. 4 is a circuit diagram showing the pressure switch 28 of FIG. 3 taken out. The switch contact 28a is turned off as shown when the introduction pressure is less than the set pressure, and the set pressure is set by introducing pressurized water by test water discharge. If it becomes above, switch contact 28a will turn on and an ON signal will be sent to disaster prevention receiving board 36.

またスイッチ接点２８ａと並列に終端抵抗４０を接続し、スイッチ接点２８ａがオフしている定常状態で終端抵抗４０に断線監視電流を流しており、防災受信盤３６からの信号線４４に断線が発生すると断線監視電流が断たれ、これを防災受信盤３６で検知して断線警報を出すようにしている。
In addition, a termination resistor 40 is connected in parallel with the switch contact 28a, and a disconnection monitoring current is passed through the termination resistor 40 in a steady state in which the switch contact 28a is off, and a disconnection occurs in the signal line 44 from the disaster prevention receiving board 36. Then, the disconnection monitoring current is interrupted, and this is detected by the disaster prevention receiving board 36 to issue a disconnection alarm.

特開２００２−１２６１２０号公報JP 2002-126120 A 特許第３７７７５３８号公報Japanese Patent No. 3777538 特開２００５−０６９３４４号公報Japanese Patent Laid-Open No. 2005-069344 特開２００５−２８７９８０号公報JP 2005-287980 A

しかしながら、このような自動弁装置の点検にあっては、テスト放水による点検が終了した場合、テスト制水弁１４を全閉位置から全開位置に戻す切替操作を行わなければならないが、人為的な操作であることから、万が一、テスト制水弁の開操作を忘れるか、或いは開操作を行っても全開位置まで操作しなかった場合は、自動弁１２の２次側の流路が遮断状態となるか、あるいは充分な流路が確保できない状態となり、火災検知に伴い自動弁装置を起動した場合に、水噴霧ヘッド３２から放水することができないか、或いは水噴霧ヘッドへ充分な量の消火用水が供給できないという問題がある。   However, in the inspection of such an automatic valve device, when the inspection by the test water discharge is completed, a switching operation for returning the test water control valve 14 from the fully closed position to the fully opened position must be performed. In the unlikely event that you forget to open the test water control valve, or if you do not open the test water control valve to the fully open position, the flow path on the secondary side of the automatic valve 12 Or when a sufficient flow path cannot be secured and the automatic valve device is activated in response to a fire detection, water cannot be discharged from the water spray head 32, or a sufficient amount of fire extinguishing water is supplied to the water spray head. There is a problem that cannot be supplied.

この問題を解決するためには、テスト制水弁１４に開閉検出スイッチを設け、防災受信盤３６からの信号線に接続し、防災受信盤３６側でテスト制水１４弁が全開位置あるか否かを表示すれば良い。   To solve this problem, the test water control valve 14 is provided with an open / close detection switch, connected to the signal line from the disaster prevention reception panel 36, and whether or not the test water control 14 valve is in the fully open position on the disaster prevention reception panel 36 side. Or just display.

しかしながら、テスト制水弁に開閉検出スイッチを設けた場合、開閉検出スイッチに対し防災受信盤から信号線を引き出して接続する必要があり、特に、既設のトンネルに設置した自動弁装置で防災受信盤から新たに信号線を敷設することは困難であり、簡単には対応できないという問題がある。   However, when an open / close detection switch is provided on the test water control valve, it is necessary to connect the open / close detection switch by pulling out a signal line from the disaster prevention reception board. In particular, the automatic valve device installed in the existing tunnel is used for the disaster prevention reception board. Thus, it is difficult to lay a new signal line, and there is a problem that it cannot be easily dealt with.

本発明は、防災受信盤から新たに信号線を敷設することなく、テスト制水弁に開閉検出スイッチを設けて、点検終了に伴い全開位置に操作されているか否かの確認が簡単にできるようにする自動弁装置を提供することを目的とする。
The present invention provides an open / close detection switch on the test water control valve without laying a new signal line from the disaster prevention receiving panel, so that it can be easily confirmed whether or not the fully-open position is operated upon completion of the inspection. An object is to provide an automatic valve device.

本発明は、
圧力調整弁による制御圧を受けて２次圧力を規定圧力に調圧した２次側加圧水を水噴霧ノズルに供給して散水させる自動弁と、
水噴霧時又はテスト放水時に防災受信盤からの制御信号により開制御され、自動弁の１次側加圧水を圧力調整弁に供給して自動弁へ制御圧を供給させるパイロット弁と、
自動弁の二次側に配置され、定常時に全開位置に操作され、テスト放水時に全閉位置に操作されるテスト用制水弁と、
テスト放水時に開放操作され、自動弁の２次側から排水側に加圧水を流すテスト放水弁と、
防災受信盤からの信号線に接続され、放水時に自動弁の２次側に加圧水が流入し、自動弁の２次側圧力が所定の圧力以上の場合にスイッチ接点をオンする圧力スイッチと、
圧力スイッチのスイッチ接点に並列接続され、防災受信盤からの信号線に断線監視電流を流す終端器と、
を備えた自動弁装置に於いて、
テスト制水弁に、全開位置でスイッチ接点をオンし、当該全開位置を外れた閉側位置でスイッチ接点をオフする開閉検出スイッチを設け、
防災受信盤からの信号線に、圧力スイッチのスイッチ接点と終端器との並列回路と直列に開閉検出スイッチのスイッチ接点を接続し、
テスト制水弁を全開位置以外の閉側位置に操作している場合の開閉検出スイッチのスイッチ接点のオフにより、防災受信盤に信号線の断線を検知させてテスト制水弁が全開位置にないことを報知させることを特徴とする。 The present invention
An automatic valve for supplying water to the water spray nozzle and sprinkling secondary pressurized water that has been adjusted to a specified pressure by receiving the control pressure from the pressure regulating valve;
A pilot valve that is controlled to open by a control signal from the disaster prevention receiver when spraying water or testing, and supplying primary pressure water of the automatic valve to the pressure regulating valve to supply control pressure to the automatic valve;
A water control valve for testing, which is arranged on the secondary side of the automatic valve, is operated to the fully open position at the time of steady operation, and is operated to the fully closed position at the time of test water discharge;
A test water discharge valve that is opened when test water is discharged and allows pressurized water to flow from the secondary side to the drain side of the automatic valve,
A pressure switch that is connected to the signal line from the disaster prevention reception board, turns on the switch contact when the pressurized water flows into the secondary side of the automatic valve when the water is discharged, and the secondary pressure of the automatic valve is equal to or higher than a predetermined pressure;
A terminator connected in parallel to the switch contact of the pressure switch and passing a disconnection monitoring current to the signal line from the disaster prevention receiver;
In an automatic valve device equipped with
The test water control valve is provided with an open / close detection switch that turns on the switch contact at the fully open position and turns off the switch contact at the closed position outside the fully open position.
Connect the switch contact of the open / close detection switch in series with the parallel circuit of the switch contact of the pressure switch and the terminator to the signal line from the disaster prevention receiver.
When the test water control valve is operated to a closed position other than the fully open position, turning off the switch contact of the open / close detection switch causes the disaster prevention reception panel to detect the disconnection of the signal line and the test water control valve is not in the fully open position This is characterized in that it is notified.

ここで、開閉検出スイッチは、テスト制水弁の開閉操作に伴い全開位置と全閉位置との間で移動する開閉連動部材の全開位置でスイッチ接点をオンし、開閉連動部材が全開位置を外れた閉側位置でスイッチ接点をオフするリミットスイッチである。   Here, the open / close detection switch turns on the switch contact at the fully open position of the open / close interlocking member that moves between the fully open position and the fully closed position in accordance with the open / close operation of the test water control valve, and the open / close interlock member deviates from the fully open position. It is a limit switch that turns off the switch contact at the closed position.

テスト放水時において、開閉検出スイッチは、テスト制水弁を全閉位置に操作してスイッチ接点をオフしたテスト放水状態で、スイッチ接点をオン位置に操作して信号線による断線状態を解消して防災受信盤からの制御信号によるパイロットを開制御可能とする。   At the time of test water discharge, the open / close detection switch operates the test water control valve to the fully closed position to turn off the switch contact, and operates the switch contact to the on position to eliminate the disconnection due to the signal line. The pilot can be opened by the control signal from the disaster prevention reception board.

防災受信盤からの距離が遠くなる自動弁装置については、信号線を直接防災受信盤と接続せず、中継器を経由して自動弁と接続される。
For the automatic valve device whose distance from the disaster prevention receiving board is far away, the signal line is not directly connected to the disaster prevention receiving board but is connected to the automatic valve via a repeater.

本発明によれば、自動弁の２次側に配置したテスト制水弁に、全開位置でスイッチ接点をオンし、当該全開位置を外れた閉側位置でスイッチ接点をオフする開閉検出スイッチを設け、圧力スイッチに接続された防災受信盤からの信号線に開閉検出スイッチのスイッチ接点を直列に接続し、テスト制水弁を全開位置以外の閉側位置に操作している場合は、開閉検出スイッチのスイッチ接点のオフにより、防災受信盤に信号線の断線を検知させてテスト制水弁が全開位置にないことを報知させるようにしたため、自動弁装置の点検が終了した場合にテスト制水弁の開操作を忘れるか、或いは開操作を行っても全開位置まで操作されなかった場合は、防災受信盤においてテスト制水弁が正常な全開位置にないことが報知され、これを受けてテスト制水弁を確実に全開位置に操作することとなり、火災検知に伴い自動弁装置を起動した場合に、水噴霧ヘッド３２から放水することができないか、或いは水噴霧ヘッドへ充分な量の消火用水が供給できないという問題を確実に防止することができる。   According to the present invention, the test water control valve arranged on the secondary side of the automatic valve is provided with an open / close detection switch that turns on the switch contact at the fully opened position and turns off the switch contact at the closed position outside the fully opened position. If the switch contact of the open / close detection switch is connected in series to the signal line from the disaster prevention receiver connected to the pressure switch, and the test water control valve is operated to a closed side other than the fully open position, the open / close detection switch When the switch contact is turned off, the disaster prevention reception board detects the disconnection of the signal line and informs that the test water control valve is not in the fully open position. If the forgetting operation is forgotten or if the opening operation is not performed to the fully open position, the disaster prevention reception panel informs the user that the test water control valve is not in the normal fully open position. If the valve is operated to the fully open position and the automatic valve device is activated in response to a fire detection, water cannot be discharged from the water spray head 32 or a sufficient amount of fire-fighting water is supplied to the water spray head. The problem of not being able to be prevented can be surely prevented.

またテスト制水弁に設けた開閉検出スイッチは、既に設けられている圧力スイッチに対する防災受信盤からの信号線に接続することで対応でき、防災受信盤から新たに信号線を敷設する必要はなく、既設の自動弁装置であって簡単且つ容易に対応することができる。
In addition, the open / close detection switch provided on the test water control valve can be handled by connecting to the signal line from the disaster prevention receiver for the existing pressure switch, and there is no need to install a new signal line from the disaster prevention receiver. The existing automatic valve device can be easily and easily handled.

本発明による自動弁装置の概略を示した説明図Explanatory drawing which showed the outline of the automatic valve apparatus by this invention 図１に設けた圧力スイッチとテスト制水弁の開閉検出スイッチの信号線に対する接続の実施形態を示した回路図FIG. 1 is a circuit diagram showing an embodiment of connection of a pressure switch and a test water control valve opening / closing detection switch to a signal line provided in FIG. 従来の自動弁装置の概略を示した説明図Explanatory drawing showing the outline of a conventional automatic valve device 従来の信号線に対する圧力スイッチの接続を示した回路図Circuit diagram showing connection of pressure switch to conventional signal line

図１は本発明による自動弁装置の概略を示した説明図である。図１において、自動弁装置１０は、自動弁１２、テスト制水弁１４、止め弁１６、パイロット弁１８、手動起動弁２０、圧力調整弁２２、自動排水弁２４、テスト放水弁２６及び圧力スイッチ２８を備える。   FIG. 1 is an explanatory view showing an outline of an automatic valve device according to the present invention. In FIG. 1, an automatic valve device 10 includes an automatic valve 12, a test water control valve 14, a stop valve 16, a pilot valve 18, a manual start valve 20, a pressure adjustment valve 22, an automatic drain valve 24, a test water discharge valve 26, and a pressure switch. 28.

自動弁１２は常時は閉じており、一次側には給水配管３０が接続され、給水配管３０には所定圧力範囲、例えば０．７ＭＰａ〜１．７７ＭＰａの範囲となる加圧水が充填され、火災時にはポンプ設備から加圧水が供給される。   The automatic valve 12 is normally closed, a water supply pipe 30 is connected to the primary side, and the water supply pipe 30 is filled with pressurized water having a predetermined pressure range, for example, a range of 0.7 MPa to 1.77 MPa. Pressurized water is supplied from the facility.

自動弁１２の二次側にはテスト制水弁１４が設けられ、その二次側にヘッド配管３４を介して複数の水噴霧ヘッド３２を接続している。テスト制水弁１４は、定常時は全開位置に操作しており、点検時には水噴霧ヘッド３２から実際に消火用水を散水することなく排水側に消火用水を流して行うテスト放水のため、全閉位置に操作する。   A test water control valve 14 is provided on the secondary side of the automatic valve 12, and a plurality of water spray heads 32 are connected to the secondary side via a head pipe 34. The test water control valve 14 is operated to a fully open position at the time of steady operation, and is fully closed for a test water discharge that is performed by flowing fire-extinguishing water from the water spray head 32 to the drainage side without actually sprinkling water at the time of inspection. Manipulate to position.

ここで、自動弁１２の圧力制御機構およびその制御機器を説明する。自動弁１２の圧力制御機構は、シリンダ室１２ａにリターンスプリングを介してピストン１２ｂを摺動自在に収納しており、ピストン１２ｂの移動で弁体１２ｃを移動して自動弁１２を開放するようにしている。   Here, the pressure control mechanism of the automatic valve 12 and its control device will be described. The automatic valve 12 has a pressure control mechanism in which a piston 12b is slidably housed in a cylinder chamber 12a via a return spring, and the valve body 12c is moved by the movement of the piston 12b to open the automatic valve 12. ing.

火災時における自動弁１２の水噴霧動作は、火災検知に伴い防災受信盤３６から信号線４２を介して放水起動信号が電動弁を用いたパイロット弁１８へ送信され、パイロット弁１８が遠隔的に開制御される。パイロット弁１８が開くと、一次側の加圧水が止め弁１６、パイロット弁１８、圧力調整弁２２を介して自動弁１２のシリンダ室１２ａに供給され、ピストン１２ｂを左側にストロークして、弁体１２ｃを弁座からリフトして開放し、二次側に加圧消火用水を供給し、水噴霧ヘッド３２からトンネル内に散水させる。   In the water spray operation of the automatic valve 12 at the time of a fire, a water discharge start signal is transmitted from the disaster prevention receiving panel 36 to the pilot valve 18 using the motorized valve via the signal line 42 in accordance with the fire detection, and the pilot valve 18 is remotely Open controlled. When the pilot valve 18 is opened, the primary pressurized water is supplied to the cylinder chamber 12a of the automatic valve 12 through the stop valve 16, the pilot valve 18, and the pressure regulating valve 22, and the piston 12b is stroked to the left side, thereby the valve body 12c. Is lifted from the valve seat and released, pressurized water for fire extinguishing is supplied to the secondary side, and water is sprayed from the water spray head 32 into the tunnel.

自動弁１２は全開方向に制御されるため、二次側の圧力値は一次側の圧力値に近付く。一方、二次側の加圧水が圧力調整弁２２のパイロットポートＰＬに入るが、この二次側の圧力値が設定値より高い場合、自動弁用圧力調整弁１２は一次圧ポートＰ１とシリンダポートＣＬの間の流路を閉じる。   Since the automatic valve 12 is controlled in the fully open direction, the pressure value on the secondary side approaches the pressure value on the primary side. On the other hand, when the secondary side pressurized water enters the pilot port PL of the pressure regulating valve 22, when the secondary side pressure value is higher than the set value, the automatic valve pressure regulating valve 12 is connected to the primary pressure port P1 and the cylinder port CL. Close the flow path between.

このためパイロット弁１８から圧力調整弁２２を通って自動弁１２のシリンダ室１２ａに対する加圧水の供給が止まり、シリンダ室１２ａの加圧水は圧力調整弁２２を通って二次側に排出することで圧力が下がり、リターンスプリングによるピストン１２ｂの戻りで弁体１２ｃの開度が小さくなる。これによって二次側圧力値が減少し、は設定値に近付く。   For this reason, the supply of pressurized water from the pilot valve 18 to the cylinder chamber 12a of the automatic valve 12 through the pressure regulating valve 22 stops, and the pressurized water in the cylinder chamber 12a passes through the pressure regulating valve 22 and is discharged to the secondary side. When the piston 12b is returned by the return spring, the opening degree of the valve body 12c is reduced. As a result, the secondary pressure value decreases and approaches the set value.

二次側圧力値が規定値より小さくなると圧力調整弁２２のＰ１とＰＬのポートが連通し、これによってシリンダ室１２ａに加圧水が入り、自動弁１２は開方向に動く。これにより、弁体１０ｃの開度を大きくして二次側圧力を大きくする。このような圧力調整弁２２による自動弁１２の開閉調整の繰り返しで二次側圧力を設定値に調整する。   When the secondary pressure value becomes smaller than the specified value, the P1 and PL ports of the pressure regulating valve 22 communicate with each other, whereby pressurized water enters the cylinder chamber 12a, and the automatic valve 12 moves in the opening direction. Thereby, the opening degree of the valve body 10c is enlarged and the secondary side pressure is increased. The secondary side pressure is adjusted to the set value by repeating the opening / closing adjustment of the automatic valve 12 by the pressure adjusting valve 22.

水噴霧ヘッド３２からの散水を停止したい場合には防災受信盤３６に折れる放水停止操作による放水停止信号を信号線４２を介してパイロット弁１８に送り、遠隔的に閉制御する。パイロット弁１８を閉じると自動弁１２のシリンダ室１２ａの加圧水が圧力調整弁２２のシリンダポートＣＬから入り、圧力調整弁２２の内部に設けた流路を経由して、自動弁１０の二次側に流れ、弁体１２ｃを緩やかに閉鎖する。   When it is desired to stop the water spraying from the water spray head 32, a water discharge stop signal generated by a water discharge stop operation that is folded on the disaster prevention receiving board 36 is sent to the pilot valve 18 via the signal line 42 and remotely controlled. When the pilot valve 18 is closed, pressurized water in the cylinder chamber 12 a of the automatic valve 12 enters from the cylinder port CL of the pressure adjustment valve 22, and passes through the flow path provided in the pressure adjustment valve 22 to the secondary side of the automatic valve 10. The valve body 12c is gently closed.

このような自動弁装置１０につき本願第１発明の実施形態にあっては、自動弁１２の２次側に配置したテスト制水弁１４に開閉検出スイッチ４６を設けている。開閉検出スイッチ４６としては例えばリミットスイッチが使用される。開閉検出スイッチ４６はスイッチ接点を備えており、制水弁１４の操作ハンドル１４ａの弁体駆動軸などに設けた開閉連動部材４８の動きによりスイッチ接点を開閉するように配置している。   In the embodiment of the first invention of the present application for such an automatic valve device 10, the open / close detection switch 46 is provided in the test water control valve 14 disposed on the secondary side of the automatic valve 12. For example, a limit switch is used as the open / close detection switch 46. The open / close detection switch 46 includes a switch contact, and is arranged to open and close the switch contact by the movement of an open / close interlocking member 48 provided on a valve body drive shaft of the operation handle 14a of the water control valve 14.

即ち、開閉検出スイッチ４６は、操作ハンドル１４ａによりテスト制水弁１４を全開位置に操作した場合の開閉連動部材４８の動きを受けてスイッチ接点をオンし、オン信号を出力する。また操作ハンドル１４ａを閉方向に操作し、テスト制水弁１４が全開位置から閉鎖側に動いて開閉連動部材４８が全開位置から外れると、スイッチ接点がオフとなるようにしている。これによってテスト制水弁１４を開操作したが、全開位置まで操作していない場合にも、スイッチ接点をオフするようにし、全開位置に操作した場合にのみスイッチ接点をオンするようにしている。   That is, the open / close detection switch 46 turns on the switch contact in response to the movement of the open / close interlocking member 48 when the test water control valve 14 is operated to the fully open position by the operation handle 14a, and outputs an ON signal. Further, when the operation handle 14a is operated in the closing direction and the test water control valve 14 moves from the fully opened position to the closed side and the opening / closing interlocking member 48 is removed from the fully opened position, the switch contact is turned off. Thus, the test water control valve 14 is opened, but the switch contact is turned off even when it is not operated to the fully open position, and the switch contact is turned on only when it is operated to the fully open position.

テスト制水弁１４に設けた開閉検出スイッチ４６は防災受信盤３６から引き出された圧力スイッチ２８に対する信号線４４の途中に接続されており、開閉検出スイッチ４６の専用信号線は不要であり、圧力スイッチ２８に対する信号線４４を使用して防災受信盤３６に接続できる。このため開閉検出スイッチ４６を新たに設けても、防災受信盤３６から専用の信号線を敷設して接続する必要はなく、既設の自動弁装置１０であっても簡単且つ容易に対応できる。   The open / close detection switch 46 provided in the test water control valve 14 is connected in the middle of the signal line 44 for the pressure switch 28 drawn from the disaster prevention receiving board 36, and the dedicated signal line for the open / close detection switch 46 is not required. The signal line 44 for the switch 28 can be used to connect to the disaster prevention receiving board 36. For this reason, even if the opening / closing detection switch 46 is newly provided, it is not necessary to lay and connect a dedicated signal line from the disaster prevention receiving board 36, and the existing automatic valve device 10 can be easily and easily handled.

図２は図１に設けた圧力スイッチとテスト制水弁の開閉検出スイッチの信号線に対する接続状態の実施形態を示した回路図であり、図２（Ａ）はテスト制水弁１４の全開位置の状態、図２（Ｂ）はテスト制水弁１４の閉鎖側に操作した状態を示している。   FIG. 2 is a circuit diagram showing an embodiment of the state of connection of the pressure switch and the open / close detection switch of the test water control valve shown in FIG. 1 to the signal line, and FIG. 2 (A) shows the fully open position of the test water control valve 14. FIG. 2B shows a state in which the test water control valve 14 is operated to the closed side.

図２（Ａ）において、圧力スイッチ２８にはスイッチ接点２８ａが設けられ、防災受信盤３６からの一対の信号線４４をスイッチ接点２８ａに接続し、またスイッチ接点２８ａと並列に終端抵抗４０を接続している。圧力スイッチ２８のスイッチ接点２８ａは定常状態で導入圧力がないことからオフしており、自動弁１２の開栓により自動弁１２の二次側に流れる加圧水の圧力が所定の設定圧力以上になるとオンし、オン信号を送出する。   In FIG. 2A, the pressure switch 28 is provided with a switch contact 28a, and a pair of signal lines 44 from the disaster prevention receiving board 36 are connected to the switch contact 28a, and a termination resistor 40 is connected in parallel with the switch contact 28a. doing. The switch contact 28a of the pressure switch 28 is turned off because there is no introduction pressure in a steady state, and is turned on when the pressure of the pressurized water flowing to the secondary side of the automatic valve 12 becomes equal to or higher than a predetermined set pressure by opening the automatic valve 12. And sends an ON signal.

テスト制水弁に設けた開閉検出スイッチ４６はスイッチ接点４６ａを備え、スイッチ接点４６ａは定常状態ではテスト制水弁１４を全開位置に操作していることから、全開位置への操作に対応してスイッチ接点４６ａをオンしている。またテスト放水のためにテスト放水弁１４を全閉位置に操作すると、全開位置から閉鎖側に操作した際にスイッチ接点４６ａはオフとなる。   The open / close detection switch 46 provided in the test water control valve is provided with a switch contact 46a. Since the switch contact 46a operates the test water control valve 14 to the fully open position in a steady state, the switch contact 46a corresponds to the operation to the fully open position. The switch contact 46a is turned on. When the test water discharge valve 14 is operated to the fully closed position for test water discharge, the switch contact 46a is turned off when operated from the fully open position to the closed side.

テスト制水弁１４に設けた開閉検出スイッチ４６のスイッチ接点４６ａは、防災受信盤３６から引き出されて圧力スイッチ２８に接続した信号線４４の一方に挿入接続されている。即ち、信号線４４により、開閉検出スイッチ４６のスイッチ接点は、圧力スイッチ２８におけるスイッチ接点２８ａと終端抵抗４０との並列回路と直列に接続されている。   The switch contact 46 a of the open / close detection switch 46 provided in the test water control valve 14 is inserted and connected to one of the signal lines 44 drawn from the disaster prevention receiving board 36 and connected to the pressure switch 28. That is, the switch contact of the open / close detection switch 46 is connected in series with the parallel circuit of the switch contact 28 a and the termination resistor 40 in the pressure switch 28 by the signal line 44.

図２（Ａ）の定常監視状態で防災受信盤３６からの信号線４４に、万が一、断線が起きたとすると、終端抵抗４０により信号線４４に流している断線監視電流が断たれ、これを防災受信盤３６側で検知して断線警報を出すようにしている。   If the signal line 44 from the disaster prevention receiving board 36 is disconnected in the steady monitoring state of FIG. 2A, the disconnection monitoring current flowing through the signal line 44 is interrupted by the terminating resistor 40, and this is prevented. Detection is made on the receiving board 36 side to issue a disconnection alarm.

図２（Ｂ）はテスト制水弁１４を点検によるテスト放水のために全開位置から全閉位置に操作した場合であり、全開位置にあるテスト制水弁１４を閉鎖側へ操作して全開位置から外れると、スイッチ接点４６ａが図示のようにオフする。スイッチ接点４６ａがオフすると、信号線４４は擬似的な断線状態となり、終端抵抗４０により流れていた断線監視電流が断たれ、防災受信盤３６で断線検知に基づく断線警報が報知される。   FIG. 2B shows the case where the test water control valve 14 is operated from the fully open position to the fully closed position for test water discharge by inspection, and the test water control valve 14 in the fully open position is operated to the closed side to open the fully open position. When it is off, the switch contact 46a is turned off as shown. When the switch contact 46a is turned off, the signal line 44 is in a pseudo disconnection state, the disconnection monitoring current flowing through the termination resistor 40 is interrupted, and a disconnection alarm based on the disconnection detection is notified by the disaster prevention receiving board 36.

このため自動弁装置１０の点検を行っていることが分かっている状態で、防災受信盤３６で特定の自動弁装置について断線警報が報知された場合、防災受信盤３６側にいる点検員や監視員は、テスト制水弁の閉操作が行われたことを認識できる。   For this reason, when it is known that the automatic valve device 10 is being inspected, and the disconnection alarm is informed about the specific automatic valve device by the disaster prevention receiving board 36, the inspector or the monitoring person on the disaster prevention receiving board 36 side The worker can recognize that the test water control valve has been closed.

次に図１の実施形態における自動弁装置の点検動作を説明する。自動弁装置１０の点検は、点検員がトンネル内に出向いて自動弁１２の二次側に設けているテスト用制水弁１４をハンドル操作により全閉位置に操作する。これに伴い図２の開閉検出スイッチ４６のスイッチ接点４６ａがオフし、防災受信盤３６で信号線４４の断線を示す障害警報が報知され、テスト制水弁１４を閉操作したことが分かる。   Next, the inspection operation of the automatic valve device in the embodiment of FIG. 1 will be described. In the inspection of the automatic valve device 10, the inspector goes out into the tunnel and operates the test water control valve 14 provided on the secondary side of the automatic valve 12 to the fully closed position by operating the handle. Accordingly, the switch contact 46a of the open / close detection switch 46 of FIG. 2 is turned off, and a failure alarm indicating a disconnection of the signal line 44 is notified by the disaster prevention receiving board 36, and it can be seen that the test water control valve 14 is closed.

また点検員はテスト放水弁２６を開操作することで、自動弁１２の二次側から排水系に至るテスト放水用の経路を準備する。   The inspector opens the test water discharge valve 26 to prepare a test water discharge path from the secondary side of the automatic valve 12 to the drainage system.

この状態で防災受信盤３６側の操作でテスト放水を遠隔起動する場合、テスト制水弁１４の全閉操作に伴い防災受信盤３６で断線警報が出されており、この断線警報状態では防災受信盤３６側の操作による遠隔起動ができない場合がある。   In this state, when the test water discharge is remotely activated by the operation of the disaster prevention reception panel 36 side, a disconnection alarm is issued in the disaster prevention reception panel 36 with the fully closed operation of the test water control valve 14, and in this disconnection alarm state, the disaster prevention reception is performed. Remote activation may not be possible by operation on the panel 36 side.

そこで、防災受信盤３６による遠隔起動のため、テスト制水弁１４に設けているオフ状態にある開閉検出スイッチ４６のスイッチ接点４６ａを指先などで操作して強制的にスイッチ接点４６ａをオンし、防災受信盤３６の断線警報を復旧させ、この警報復旧状態で防災受信盤３６で放水起動操作を行って放水起動信号をパイロット弁１８に送ってテスト放水を起動させる。   Therefore, for remote activation by the disaster prevention receiving board 36, the switch contact 46a of the open / close detection switch 46 in the OFF state provided in the test water control valve 14 is operated with a fingertip to forcibly turn on the switch contact 46a, The disconnection alarm of the disaster prevention reception board 36 is restored, and in this alarm recovery state, the water discharge activation operation is performed with the disaster prevention reception board 36 and a water discharge activation signal is sent to the pilot valve 18 to activate the test water discharge.

このように開閉検出スイッチ４６を人為的な操作でオン可能とするため、開閉検出スイッチ４６はテスト制水弁４６の人為的なオン操作が可能なように設けている。   Thus, in order to enable the on / off detection switch 46 to be turned on manually, the open / close detection switch 46 is provided so that the test water control valve 46 can be turned on artificially.

なお、防災受信盤３６が断線警報状態でも信号線４２からパイロット弁１８に放水起動信号を送出可能としている場合には、スイッチ接点４６ａの人為的なオン操作は必要ない。   In addition, when the disaster prevention receiving board 36 can send out the water discharge activation signal from the signal line 42 to the pilot valve 18 even in the disconnection alarm state, it is not necessary to manually turn on the switch contact 46a.

また現場操作でテスト放水を起動する場合には、テスト制水弁１４を全閉位置に操作し、テスト放水弁２６を開位置に操作した後に、手動起動弁２０を開操作する現場起動を行っても良い。   When starting test water discharge by field operation, the test water control valve 14 is operated to the fully closed position, the test water discharge valve 26 is operated to the open position, and then the field start is performed to open the manual start valve 20. May be.

遠隔操作または現場操作により自動弁装置１０を起動すると、水噴霧ヘッド３２から実放水することなく排水系にテスト放水し、テスト放水により自動弁１２の二次側に圧力が発生すると圧力スイッチ２８のスイッチ接点２８ａがオンする。このとき開閉検出スイッチ４６はテスト制水弁１４の閉鎖に伴いスイッチ接点４６ａをオフした擬似的な断線状態にあり、圧力スイッチ２８のスイッチ接点２８ａがオンしてもオン信号を防災受信盤３６に送ることができない。   When the automatic valve device 10 is activated by remote operation or field operation, the water spray head 32 performs test water discharge to the drainage system without actually discharging water, and when pressure is generated on the secondary side of the automatic valve 12 by the test water discharge, the pressure switch 28 is turned on. The switch contact 28a is turned on. At this time, the open / close detection switch 46 is in a pseudo disconnection state in which the switch contact 46a is turned off with the closing of the test water control valve 14, and even if the switch contact 28a of the pressure switch 28 is turned on, an on signal is sent to the disaster prevention receiving board 36. I can't send it.

そこで、テスト制水弁１４に設けているオフ状態にある開閉検出スイッチ４６のスイッチ接点４６ａを指先などで操作して強制的にスイッチ接点４６ａをオンして信号線４４の擬似的な断線状態を解消すると共に、防災受信盤３６の断線警報を復旧させ、この断線警報復旧状態で圧力スイッチ２８からオン信号を防災受信盤３６に送信して自動弁作動を表示させることで、自動弁１２の動作、圧力調整弁２２による自動弁１２の２次側の自動調圧機能、圧力スイッチ２８の動作を含む動作性能の確認を行う。   Therefore, the switch contact 46a of the open / close detection switch 46 in the OFF state provided in the test water control valve 14 is operated with a fingertip or the like to forcibly turn on the switch contact 46a, and the pseudo disconnection state of the signal line 44 is established. While canceling, the disconnection alarm of the disaster prevention reception board 36 is restored, and the automatic valve 12 is displayed by transmitting an ON signal from the pressure switch 28 to the disaster prevention reception board 36 in the state where the disconnection alarm is restored. Then, the automatic pressure adjustment function on the secondary side of the automatic valve 12 by the pressure adjusting valve 22 and the operation performance including the operation of the pressure switch 28 are confirmed.

テスト放水による作動が圧力スイッチ２８のオン信号による自動弁作動表示から確認できたら、防災受信盤３６の放水停止操作により送信される放水停止信号によるパイロット弁１８の閉制御、または手動起動弁２０の閉操作を行い、これに伴い自動弁１２が全閉して、テスト放水を停止する。続いて、テスト放水弁２６を閉操作し、またテスト制水弁１４を全開位置に操作して点検を終了する。   If the operation by the test water discharge is confirmed from the automatic valve operation display by the ON signal of the pressure switch 28, the pilot valve 18 is closed by the water discharge stop signal transmitted by the water discharge stop operation of the disaster prevention receiving board 36, or the manual start valve 20 is controlled. A closing operation is performed, and the automatic valve 12 is fully closed accordingly, and the test water discharge is stopped. Subsequently, the test water discharge valve 26 is closed, and the test water control valve 14 is operated to the fully open position to complete the inspection.

このとき防災受信盤３６で断線警報が継続していた場合は、テスト制水弁１４が全開位置に戻っていないことが分かり、断線警報が復旧するようにテスト制水弁１４を全開位置に操作する。なお、テスト放水を停止した場合、自動弁２４の２次側からテスト放水弁２６間にある消火用水は、圧力低下に伴い自動排水弁２４が開くことでドレインに排水される。   If the disconnection alarm continues at the disaster prevention reception board 36 at this time, it is found that the test water control valve 14 has not returned to the fully open position, and the test water control valve 14 is operated to the fully open position so that the disconnection alarm is restored. To do. In addition, when the test water discharge is stopped, the water for fire extinguishing between the secondary side of the automatic valve 24 and the test water discharge valve 26 is drained to the drain by opening the automatic drain valve 24 as the pressure decreases.

なお、上記の実施形態にあっては、防災受信盤から自動弁装置に直接に信号線を接続した場合を例にとっているが、防災受信盤からの距離が遠くなる自動弁装置については途中に中継器を設けており、本発明は、中継器を経由して防災受信盤からの信号線を自動弁装置に接続する場合を含む。   In the above embodiment, the case where the signal line is directly connected to the automatic valve device from the disaster prevention reception board is taken as an example, but the automatic valve device whose distance from the disaster prevention reception board is far away is relayed on the way The present invention includes the case where the signal line from the disaster prevention receiving board is connected to the automatic valve device via the repeater.

また本発明における自動弁装置としては、放水起動を行った場合に放水圧力を規定の低圧から規定の高圧に２段階に切替える段階放水機能月の自動弁装置にも適用することができる。この段階放水機能付きの自動弁装置としては例えば前述した特許文献３及び特許文献４に記載されたものが含まれる。   The automatic valve device according to the present invention can also be applied to an automatic valve device with a stage water discharge function month that switches the water discharge pressure from a prescribed low pressure to a prescribed high pressure when the water discharge is activated. Examples of the automatic valve device with a stage water discharge function include those described in Patent Document 3 and Patent Document 4 described above.

また上記の実施形態は、圧力スイッチに終端抵抗も設けた場合を例とっているが、終端抵抗以外にダイオードやコンデンサなどの適宜の終端素子を接続する終端器を含む。   Moreover, although said embodiment has illustrated the case where termination pressure resistance is also provided in the pressure switch, it contains the terminator which connects appropriate termination elements, such as a diode and a capacitor | condenser other than termination resistance.

また本発明はその目的と利点を損なうことのない適宜の変形を含み、更に上記の実施形態に示した数値による限定は受けない。
The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

１０：自動弁装置
１２：自動弁
１４：テスト制水弁
１６：止め弁
１８：パイロット弁
２０：手動起動弁
２２：圧力調整弁
２４：自動排水弁
２６：テスト放水弁
２８：圧力スイッチ
２８ａ，４６ａ：スイッチ接点
３０：給水管
３２：ミス噴霧ヘッド
３４：ヘッド配管
３６：防災受信盤
４０：終端抵抗
４２，４４：信号線
４６：開閉検出スイッチ 10: Automatic valve device 12: Automatic valve 14: Test water control valve 16: Stop valve 18: Pilot valve 20: Manual start valve 22: Pressure regulating valve 24: Automatic drain valve 26: Test water discharge valve 28: Pressure switches 28a, 46a : Switch contact 30: Water supply pipe 32: Mis spray head 34: Head pipe 36: Disaster prevention receiving board 40: Termination resistors 42 and 44: Signal line 46: Open / close detection switch

Claims (4)

圧力調整弁による制御圧を受けて２次圧力を規定圧力に調圧した２次側加圧水を水噴霧ノズルに供給して散水させる自動弁と、
水噴霧時又はテスト放水時に防災受信盤からの制御信号により開制御され、前記自動弁の１次側加圧水を前記圧力調整弁に供給して前記自動弁へ前記制御圧を供給させるパイロット弁と、
前記自動弁の二次側に配置され、定常時に全開位置に操作され、テスト放水時に全閉位置に操作されるテスト制水弁と、
テスト放水時に開放操作され、前記自動弁の２次側から排水側に加圧水を流すテスト放水弁と、
前記防災受信盤からの信号線に接続され、放水時に前記自動弁の２次側に加圧水が流入し、前記自動弁の２次側圧力が所定の圧力以上の場合にスイッチ接点をオンする圧力スイッチと、
前記圧力スイッチのスイッチ接点に並列接続され、前記防災受信盤からの信号線に断線監視電流を流す終端器と、
を備えた自動弁装置に於いて、
前記テスト制水弁に、全開位置でスイッチ接点をオンし、当該全開位置を外れた閉側位置で前記スイッチ接点をオフする開閉検出スイッチを設け、
前記防災受信盤からの信号線に、前記圧力スイッチのスイッチ接点と前記終端器との並列回路と直列に前記開閉検出スイッチのスイッチ接点を接続し、
前記テスト制水弁を全開位置以外の閉側位置に操作している場合の前記開閉検出スイッチのスイッチ接点のオフにより、前記防災受信盤に前記信号線の断線を検知させて前記テスト制水弁が全開位置にないことを報知させることを特徴とする自動弁装置。
An automatic valve for supplying water to the water spray nozzle and sprinkling secondary pressurized water that has been adjusted to a specified pressure by receiving the control pressure from the pressure regulating valve;
A pilot valve that is controlled to open by a control signal from a disaster prevention reception board at the time of water spraying or test water discharge, and supplies the control pressure to the automatic valve by supplying primary pressure water of the automatic valve to the pressure regulating valve;
A test water control valve that is disposed on the secondary side of the automatic valve, is operated to a fully open position during steady operation, and is operated to a fully closed position during test water discharge;
A test water discharge valve that is opened during test water discharge and allows pressurized water to flow from the secondary side to the drain side of the automatic valve;
Pressure switch that is connected to the signal line from the disaster prevention receiving board and that turns on the switch contact when pressurized water flows into the secondary side of the automatic valve when the water discharges and the secondary side pressure of the automatic valve is equal to or higher than a predetermined pressure When,
A terminator connected in parallel to the switch contact of the pressure switch, and causing a disconnection monitoring current to flow through the signal line from the disaster prevention receiver;
In an automatic valve device equipped with
The test water control valve is provided with an open / close detection switch that turns on the switch contact at the fully open position and turns off the switch contact at the closed position outside the fully open position,
Connect the switch contact of the open / close detection switch in series with a parallel circuit of the switch contact of the pressure switch and the terminator to the signal line from the disaster prevention receiving board,
When the test water control valve is operated to a closed side position other than the fully open position, the test contact water control valve is caused to detect the disconnection of the signal line by causing the disaster prevention reception panel to detect disconnection of the open / close detection switch. An automatic valve device that informs that the valve is not in the fully open position.
請求項１記載の自動弁装置に於いて、前記開閉検出スイッチは、前記テスト制水弁の開閉操作に伴い全開位置と全閉位置との間で移動する開閉連動部材の全開位置でスイッチ接点をオンし、前記開閉連動部材が前記全開位置を外れた閉側位置で前記スイッチ接点をオフするリミットスイッチであることを特徴とする自動弁装置。
2. The automatic valve device according to claim 1, wherein the open / close detection switch has a switch contact at a fully open position of an open / close interlocking member that moves between a fully open position and a fully closed position in accordance with an opening / closing operation of the test water control valve. An automatic valve device that is a limit switch that is turned on and that turns off the switch contact when the open / close interlocking member is in a closed position that is out of the fully open position.
請求項１記載の自動弁装置に於いて、前記開閉検出スイッチは、前記テスト制水弁を全閉位置に操作して前記スイッチ接点をオフしたテスト放水状態で、前記スイッチ接点をオン位置に操作した場合に前記信号線による断線状態を解消して前記防災受信盤からの制御信号による前記パイロットを開制御可能としたことを特徴とする自動弁装置。
2. The automatic valve device according to claim 1, wherein the open / close detection switch operates the switch contact to an on position in a test water discharge state in which the test water control valve is operated to a fully closed position and the switch contact is turned off. In this case, the automatic valve device is characterized in that the open state of the pilot can be controlled by the control signal from the disaster prevention receiving board by eliminating the disconnection state due to the signal line.
請求項１乃至３のいずれかに記載の自動弁装置に於いて、前記防災受信盤からの信号線を、中継器を経由して前記自動弁に接続したことを特徴とする自動弁装置。   4. The automatic valve device according to claim 1, wherein a signal line from the disaster prevention receiving board is connected to the automatic valve via a repeater.
JP2011170939A 2011-08-04 2011-08-04 Automatic valve apparatus Pending JP2013034532A (en)

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Publication number Priority date Publication date Assignee Title
JP2015130928A (en) * 2014-01-10 2015-07-23 ホーチキ株式会社 automatic valve device inspection system
JP2018000457A (en) * 2016-06-30 2018-01-11 能美防災株式会社 Device for preventing opening failure of test water control valve
JP2018000209A (en) * 2016-06-27 2018-01-11 ホーチキ株式会社 Fire hydrant equipment in tunnel
JP2018007915A (en) * 2016-07-15 2018-01-18 ホーチキ株式会社 Tunnel fire hydrant apparatus
JP2021137608A (en) * 2020-02-28 2021-09-16 ホーチキ株式会社 Fire hydrant device

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JP2002126120A (en) * 2000-10-23 2002-05-08 Hochiki Corp Tunnel automatic valve device
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JP2005287980A (en) * 2004-04-05 2005-10-20 Hochiki Corp Automatic valve apparatus

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JPS5327794U (en) * 1976-08-17 1978-03-09
JPH09222436A (en) * 1996-02-19 1997-08-26 Hochiki Corp Flowing water detector
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Publication number Priority date Publication date Assignee Title
JP2015130928A (en) * 2014-01-10 2015-07-23 ホーチキ株式会社 automatic valve device inspection system
JP2018000209A (en) * 2016-06-27 2018-01-11 ホーチキ株式会社 Fire hydrant equipment in tunnel
JP2018000457A (en) * 2016-06-30 2018-01-11 能美防災株式会社 Device for preventing opening failure of test water control valve
JP2018007915A (en) * 2016-07-15 2018-01-18 ホーチキ株式会社 Tunnel fire hydrant apparatus
JP2021137608A (en) * 2020-02-28 2021-09-16 ホーチキ株式会社 Fire hydrant device

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