JP5792555B2 - Automatic valve device - Google Patents

Automatic valve device Download PDF

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JP5792555B2
JP5792555B2 JP2011177476A JP2011177476A JP5792555B2 JP 5792555 B2 JP5792555 B2 JP 5792555B2 JP 2011177476 A JP2011177476 A JP 2011177476A JP 2011177476 A JP2011177476 A JP 2011177476A JP 5792555 B2 JP5792555 B2 JP 5792555B2
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automatic valve
valve
switch
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博 茨木
博 茨木
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Hochiki Corp
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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８は従来の自動弁装置の概略構成を示している。図７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の二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. 8 shows a schematic configuration of a conventional automatic valve device. In FIG. 7, 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. 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に送信して放水開始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のシリンダ室１２ａの加圧動作、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 carried out by checking that the inspector goes 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. Is opened, a test water discharge route from the secondary side of the automatic valve 12 to the drainage system is prepared, and in this state, the automatic valve device 10 is activated by the water discharge start signal from the disaster prevention receiving board 36 to Test water is discharged to the drainage system without actually discharging water from the spray head 32. When 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 start water discharge. Can be confirmed, including the operation of the automatic valve 12, the pressurizing operation of the cylinder chamber 12 a of the automatic valve 12 by the pressure adjustment valve 22, and the operation of the pressure switch 28.

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を閉じると自動弁１２のシリンダ室１２ａに流水した加圧水は、圧力調整弁２２を経由して自動弁１２の二次側へ排水され自動弁１２は全閉となる。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１２の二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, when the pilot valve 18 is closed, the pressurized water that has flowed into the cylinder chamber 12 a of the automatic valve 12 passes through the pressure adjustment valve 22 to the secondary of the automatic valve 12. The automatic valve 12 is drained to the side and 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 12 and the test water discharge valve 26 is drained to the drain by opening the automatic drain valve 24 as the pressure decreases.

図９は図８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. 9 is a circuit diagram showing the pressure switch 28 of FIG. 8 taken out. The switch contact 28a is turned off as shown when the introduction pressure is lower 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の二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二次圧力を規定圧力に調圧した二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、自動弁の一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制水弁と、
テスト放水時に開放操作され、自動弁の二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、放水時に自動弁の二次側に加圧水が流入し、自動弁の二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、信号線に断線監視電流を流す終端抵抗と、
を備えた自動弁装置に於いて、
信号線に接続され、テスト制水弁にの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と、
開閉検出スイッチのスイッチ接点に並列接続され、終端抵抗と抵抗値の異なるバイパス抵抗と、
を設け、
開閉検出スイッチのスイッチ接点を、圧力スイッチのスイッチ接点と終端抵抗との並列回路に直列接続し、
信号線の端子間電圧に基づいて防災受信盤で圧力スイッチのオンオフ、前記開閉検出スイッチのオンオフ及び信号線の断線の有無を検知させ、少なくとも開閉検出スイッチのオフを検知した場合に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 that receives the control pressure from the pressure regulating valve and adjusts the secondary pressure to a specified pressure to supply water spray nozzles to spray water;
A pilot valve that is controlled to open by a control signal from the disaster prevention reception board at the time of water spraying or test water discharge, and that supplies primary pressure water to the pressure adjustment valve to supply control pressure to the automatic valve;
Arranged on the secondary side of the automatic valve, is operated to the fully open position during steady, a test system water valve which is operated fully closed position during the test water discharge,
A test water release 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 receiving board, and when pressurized water flows into the secondary side of the automatic valve at the time of water discharge, and the switch contact is turned on when the secondary side pressure of the automatic valve is equal to or higher than a predetermined pressure;
Connected in parallel to the switch contact of the pressure switch, and the terminating resistor for flowing a disconnection monitoring current to the signal line,
In an automatic valve device equipped with
Is connected to the signal line to turn on the switch contacts in the fully open position of the test system water valve, the opening and closing detecting switch for turning off the switch contact in closing side position off the fully open position,
Connected in parallel to the switch contact opening and closing detection switch, a different bypass resistor of the terminal resistor resistance value,
Provided,
The switch contact of the open / close detection switch is connected in series to the parallel circuit of the switch contact of the pressure switch and the terminating resistor,
Based on the voltage between the terminals of the signal line, the disaster prevention reception panel detects the on / off of the pressure switch, the on / off state of the open / close detection switch, and the presence / absence of the disconnection of the signal line. There characterized thereby notify that is not in the fully open position.

詳細には、In detail,
テスト制水弁を全開位置に操作した場合の開閉検出スイッチのスイッチ接点オンによりバイパス抵抗の両端を短絡し、信号線に終端抵抗のみを接続した第１回路状態を生成し、当該第１回路状態を防災受信盤に検知させてテスト制水弁の全開を認識させ、When the test water control valve is operated to the fully open position, both ends of the bypass resistor are short-circuited by turning on the switch contact of the open / close detection switch, and a first circuit state in which only the terminating resistor is connected to the signal line is generated. To the disaster prevention reception board to recognize that the test water control valve is fully open,
テスト制水弁を全開位置以外の閉側に操作した場合の開閉検出スイッチのスイッチ接点オフにより、信号線に終端抵抗とバイパス抵抗を直列接続した第２回路状態を生成し、当該第２回路状態を防災受信盤に検知させてテスト制水弁の全開認識を解除させ、When the test water control valve is operated to the closed side other than the fully open position, the switch contact of the open / close detection switch is turned off to generate a second circuit state in which a terminal resistor and a bypass resistor are connected in series to the signal line. Is detected by the disaster prevention reception board and the fully open recognition of the test water control valve is released,
テスト制水弁を全開位置以外の閉側に操作し且つテスト放水により圧力スイッチのスイッチ接点がオンして終端抵抗の両端を短絡し、信号線にバイパス抵抗のみを接続した第３回路状態を生成し、当該第３回路状態を防災受信盤に検知させて自動弁開放を表示させる。Operate the test water control valve to the closed side other than the fully open position, and the test switch water discharge turns on the switch contact of the pressure switch to short-circuit both ends of the terminating resistor, generating a third circuit state in which only the bypass resistor is connected to the signal line Then, the third circuit state is detected by the disaster prevention reception board to display the automatic valve opening.

更に詳細には、
信号線の端子間電圧に下側基準電圧、中間基準電圧及び上側基準電圧を設定し、
第１回路状態の場合に、下側基準電圧から中間基準電圧までの端子間電圧を前記防災受信盤に検出させ、
第２回路状態の場合に、中間基準電圧から上側基準電圧までの端子間電圧を防災受信盤に検出させ、
第３回路状態の場合に、下側基準電圧より低い端子間電圧を防災受信盤に検出させ、
信号線が断線状態の場合は、上側基準電圧より高い端子間電圧を防災受信盤に検出させる。
In more detail,
Set the lower reference voltage, intermediate reference voltage and upper reference voltage to the voltage between the terminals of the signal line,
In the case of the first circuit state, the disaster prevention receiving panel detects the terminal voltage from the lower reference voltage to the intermediate reference voltage,
In the case of the second circuit state, let the disaster prevention receiver detect the voltage between terminals from the intermediate reference voltage to the upper reference voltage,
In the case of the third circuit state, let the disaster prevention receiver detect a voltage between terminals lower than the lower reference voltage,
When the signal line is disconnected, the disaster prevention receiving panel detects a voltage between terminals higher than the upper reference voltage.

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。   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. It is a limit switch that turns off the switch contact at the position.

防災受信盤からの距離が遠くなる自動弁装置や防災受信盤と接続される自動弁の設置数量が多い場合については、防災受信盤からの信号線を、中継器を経由して開閉検出スイッチに接続する。このとき防災受信盤と中継器は伝送回線で接続され、それぞれインタフェースユニットを介して伝送回線と接続される。
When there is a large number of automatic valves connected to the disaster prevention receiver and the automatic valve device that is far away from the disaster prevention receiver, connect the signal line from the disaster prevention receiver to the open / close detection switch via a repeater. Connect . At this time, the disaster prevention reception board and the repeater are connected by a transmission line, and each is connected to the transmission line via an interface unit.

本発明によれば、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挿入接続すると共に並列にバイパス抵抗を接続し、開閉検出スイッチのスイッチ接点がオフした場合のバイパス抵抗と圧力スイッチのスイッチ接点に並列接続した終端抵抗に基づいて防災受信盤でテスト制水弁が全開位置にないことを検知して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確認でき、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 is provided with the open / close detection switch for turning on the switch contact at the fully open position and turning off the switch contact at the closed position outside the fully open position, and the disaster prevention reception connected to the pressure switch. Insert and connect the switch contact of the open / close detection switch to the signal line from the panel and connect the bypass resistor in parallel, and the termination resistor connected in parallel to the bypass contact and the switch contact of the pressure switch when the switch contact of the open / close detection switch is turned off In response to this, the disaster prevention reception panel detects that the test water control valve is not in the fully open position and notifies it so that when the inspection of the automatic valve device is completed, the test water control valve is forgotten to be opened or opened. If it is not operated to the fully open position even after the operation, it can be confirmed that the test water control valve is not in the normal fully open position in the disaster prevention reception board. It becomes possible to operate the strike system water valve to ensure the fully open position, when you start the automatic valve device with the fire detection, or not be able to discharge water from the water spray head, or a sufficient amount of water for fire fighting water spray head Can be reliably prevented from being supplied.

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.

更に、開閉検出スイッチのスイッチ接点と並列にバイパス抵抗を接続することにより、テスト制水弁に設けた開閉検出スイッチのスイッチ接点のオン、オフと圧力スイッチのスイッチ接点のオン、オフの組合せに基づき、テスト制水弁を全開位置に操作した場合、テスト制水弁を全開位置以外の閉側に操作した場合、またはテスト制水弁を全開位置以外の閉側に操作し且つテスト放水により圧力スイッチが作動した場合について、信号線の終端側に異なる抵抗値となる３つの回路状態を生成し、これに基づき防災受信盤でテスト制水弁全開の認識、この全開認識の解除、及びテスト放水に伴う自動弁正常作動という各状態を把握して適切に対応することができる。
Furthermore, by connecting a bypass resistor in parallel with the switch contact of the open / close detection switch, based on the combination of on / off of the switch contact of the open / close detection switch provided on the test water control valve and on / off of the switch contact of the pressure switch When the test water control valve is operated to the fully open position, the test water control valve is operated to the closed side other than the fully open position, or the test water control valve is operated to the closed side other than the fully open position, and the pressure switch is activated by the test water discharge. When the is activated, three circuit states with different resistance values are generated on the terminal side of the signal line, and based on this, the test reception valve is fully recognized, the fully open recognition is released, and the test water is discharged by the disaster prevention reception board. Each state of the normal operation of the automatic valve involved can be grasped and appropriately dealt with.

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. 図２の実施形態におけるテスト制水弁の開閉検出スイッチと圧力スイッチの作動状態に対応して信号線に接続される抵抗値の回路状態を示した説明図Explanatory drawing which showed the circuit state of the resistance value connected to a signal wire | line corresponding to the operating state of the opening / closing detection switch and pressure switch of a test water control valve in embodiment of FIG. 図１の防災受信盤の概略構成を示したブロック図Block diagram showing the schematic configuration of the disaster prevention receiver in FIG. 図４の防災受信盤における自動弁受信部の詳細を自動弁側回路と共に示したブロック図The block diagram which showed the detail of the automatic valve receiver in the disaster prevention receiving board of FIG. 4 with the automatic valve side circuit 図３の３つの回路状態を防災受信盤側の電流検出抵抗と共に示した説明図An explanatory diagram showing the three circuit states of FIG. 3 together with the current detection resistor on the disaster prevention receiver side 防災受信盤に中継器を介して自動弁装置を接続した実施形態を示したブロック図The block diagram which showed embodiment which connected the automatic valve apparatus to the disaster prevention receiving board via the repeater 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において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 water spraying from the water spray head 32, a water discharge stop signal by a water discharge stop operation is sent to the pilot valve 18 via the signal line 42 in the disaster prevention receiving board 36, and the remote closing control is performed. 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につき本実施形態にあっては、自動弁１２の二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 present embodiment for such an automatic valve device 10, an open / close detection switch 46 is provided on 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。   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.

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.

なお、防災受信盤３６には自動弁装置１０と共にトンネル内に設置している消火栓装置との間の信号線も接続されるが、図示を省略している。   In addition, although the signal line between the fire prevention device installed in the tunnel with the automatic valve device 10 is connected to the disaster prevention receiving board 36, illustration is abbreviate | omitted.

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.

更にテスト制水弁１４に設けた開閉検出スイッチ４６のスイッチ接点４６ａと並列にバイパス抵抗５０を接続している。バイパス抵抗５０の抵抗値は、開閉検知と圧力検知を防災受信盤３６で識別可能とするため、終端抵抗４０とは異なる抵抗値が望ましい。ここでは終端抵抗４０の抵抗値をＲ１、パイパス抵抗５０の抵抗値をＲ２とする。なお、終端抵抗４０とパイパス抵抗５０の抵抗値を同じにしても良い。   Further, a bypass resistor 50 is connected in parallel with the switch contact 46 a of the open / close detection switch 46 provided in the test water control valve 14. The resistance value of the bypass resistor 50 is preferably a resistance value different from that of the termination resistor 40 so that the open / close detection and the pressure detection can be identified by the disaster prevention receiving board 36. Here, the resistance value of the termination resistor 40 is R1, and the resistance value of the bypass resistor 50 is R2. The resistance values of the termination resistor 40 and the bypass resistor 50 may be the same.

防災受信盤３６から信号線４４を介して終端側をみた場合の抵抗値は、テスト制水弁１４の開閉状態と圧力スイッチ２８の作動状態に応じて図３（Ａ）〜（Ｃ）に示す回路状態となり、これを説明すると次のようになる。   The resistance value when the terminal side is viewed from the disaster prevention receiving board 36 via the signal line 44 is shown in FIGS. 3A to 3C according to the open / close state of the test water control valve 14 and the operating state of the pressure switch 28. It will be as follows when it will be in a circuit state and this is demonstrated.

（１）テスト制水弁全開状態（第１回路状態）
図３（Ａ）は第１回路状態を示す。この場合、テスト制水弁１４を全開位置に操作した場合の開閉検出スイッチ４６のスイッチ接点４６ａのオンによりバイパス抵抗５０の両端を短絡し、信号線４４に終端抵抗４０のみを接続した抵抗値Ｒ１となる第１回路状態を生成し、この第１回路状態を防災受信盤３６に検知させてテスト制水弁１４が全開であることを認識させる。 (1) Test water control valve fully open (first circuit state)
FIG. 3A shows the first circuit state. In this case, both ends of the bypass resistor 50 are short-circuited by turning on the switch contact 46a of the open / close detection switch 46 when the test water control valve 14 is operated to the fully open position, and the resistance value R1 in which only the terminating resistor 40 is connected to the signal line 44. The first circuit state is generated, and the first circuit state is detected by the disaster prevention receiving board 36 to recognize that the test water control valve 14 is fully open.

（２）テスト制水弁非全開状態（第２回路状態）
図３（Ｂ）は第２回路状態を示す。この場合、テスト制水弁１４を全開位置以外の閉側に操作した場合（全閉位置を含む）の開閉検出スイッチ４６のスイッチ接点４６ａのオフにより、信号線４４に終端抵抗４０とバイパス抵抗５０を直列接続した抵抗値（Ｒ１＋Ｒ２）となる第２回路状態を生成し、この第２回路状態を防災受信盤３６に検知させてテスト放水弁１４の全開認識を解除させる。 (2) Test water control valve not fully open (second circuit state)
FIG. 3B shows the second circuit state. In this case, when the test water control valve 14 is operated to the closed side other than the fully open position (including the fully closed position), the terminal contact 40 and the bypass resistor 50 are connected to the signal line 44 by turning off the switch contact 46a of the open / close detection switch 46. A second circuit state having a resistance value (R1 + R2) connected in series is generated, and the second circuit state is detected by the disaster prevention receiving board 36, and the fully open recognition of the test water discharge valve 14 is released.

（３）圧力スイッチオン状態（第３回路状態）
図３（Ｃ）は第３回路状態を示す。この場合、テスト制水弁１４を全開位置以外の閉側（全閉位置を含む）に操作し且つ放水により圧力スイッチ２８のスイッチ接点２８ａがオンして終端抵抗４０の両端を短絡し、信号線４４にバイパス抵抗５０のみを接続した抵抗値Ｒ２となる第３回路状態を生成し、当該第３回路状態を防災受信盤３６に検知させて自動弁開放を表示させる。 (3) Pressure switch on state (third circuit state)
FIG. 3C shows the third circuit state. In this case, the test water control valve 14 is operated to the closed side (including the fully closed position) other than the fully open position, and the switch contact 28a of the pressure switch 28 is turned on by water discharge, and both ends of the terminating resistor 40 are short-circuited. A third circuit state having a resistance value R2 in which only the bypass resistor 50 is connected to 44 is generated, and the third circuit state is detected by the disaster prevention receiving board 36 to display automatic valve opening.

このような自動弁装置１０に対する信号線４４の第１〜第３回路状態に対し、防災受信盤３６において、第１回路状態の生成による抵抗値Ｒ１に対応した電流を検知した場合は、テスト制水弁１４の全開を認識し、第２回路状態の生成による抵抗値（Ｒ１＋Ｒ２）に対応した電流を検知した場合は、テスト制水弁１４の全開認識を解除し、更に、第３回路状態の生成による抵抗値Ｒ２に対応した電流を検知した場合は、圧力スイッチ２８のオンを検知して自動弁が作動したことを表示する。   When the current corresponding to the resistance value R1 due to the generation of the first circuit state is detected in the disaster prevention reception board 36 for the first to third circuit states of the signal line 44 for such an automatic valve device 10, the test control is performed. When the current corresponding to the resistance value (R1 + R2) due to the generation of the second circuit state is detected by recognizing the full opening of the water valve 14, the full opening recognition of the test water control valve 14 is canceled, and further, the third circuit state When a current corresponding to the generated resistance value R2 is detected, the on-state of the pressure switch 28 is detected to indicate that the automatic valve has been activated.

図４は図１における防災受信盤の概略構成を示したブロック図である。図４において、防災受信盤３６には、制御部７０、火災検知部７２、報知部７４、操作部７６、移報部７８、自動弁送信部８０及び自動弁受信部８２が設けられる。また防災受信盤３６には、消火栓装置に対応して消火栓送信部８４と消火栓受信部８６が設けられる。   FIG. 4 is a block diagram showing a schematic configuration of the disaster prevention receiving board in FIG. In FIG. 4, the disaster prevention receiving board 36 includes a control unit 70, a fire detection unit 72, a notification unit 74, an operation unit 76, a transfer unit 78, an automatic valve transmission unit 80, and an automatic valve reception unit 82. The disaster prevention receiving board 36 is provided with a fire hydrant transmitter 84 and a fire hydrant receiver 86 corresponding to the fire hydrant device.

火災検知部７２からは監視系統毎に信号線が引き出されて複数の火災検知器（図示せず）が接続され、火災検知器からの火災信号を受信して制御部７０に出力し、報知部７４から火災警報を出力させる。   A signal line is drawn from the fire detection unit 72 for each monitoring system, and a plurality of fire detectors (not shown) are connected. A fire signal from the fire detector is received and output to the control unit 70, and a notification unit. A fire alarm is output from 74.

自動弁送信部８０からは自動弁装置１０に対し信号線４２が引き出され、操作部７６の放水起動操作に基づく制御部７０からの指示を受けて放水起動信号を自動弁装置１０に送信し、図１のパイロット弁１８を開制御する。また放水停止操作の際には放水停止信号を送信してパイロット弁１８を閉制御する。   A signal line 42 is drawn from the automatic valve transmission unit 80 to the automatic valve device 10, receives a command from the control unit 70 based on the water discharge activation operation of the operation unit 76, and transmits a water discharge activation signal to the automatic valve device 10. The pilot valve 18 in FIG. 1 is controlled to open. Further, at the time of the water discharge stop operation, a water discharge stop signal is transmitted to control the pilot valve 18 to be closed.

自動弁受信部８２からは自動弁装置１０に信号線４４が引き出され、図２に示したように、圧力スイッチ２８、終端抵抗４０、開閉検出スイッチ４６及びバイパス抵抗５０を接続している。なお、自動弁送信部８０及び自動弁受信部８２からの信号線４２，４４は自動弁装置毎に引き出されている。   A signal line 44 is drawn from the automatic valve receiver 82 to the automatic valve device 10, and as shown in FIG. 2, the pressure switch 28, the termination resistor 40, the open / close detection switch 46, and the bypass resistor 50 are connected. The signal lines 42 and 44 from the automatic valve transmitter 80 and the automatic valve receiver 82 are drawn for each automatic valve device.

移報部７８は、防災受信盤３６で自動弁装置１０に対する放水起動操作を行った場合に、図示しないポンプ制御盤にポンプ起動信号を送信してポンプ運転を開始させたりすることができる。   When the disaster prevention reception board 36 performs a water discharge start operation on the automatic valve device 10, the transfer section 78 can start a pump operation by transmitting a pump start signal to a pump control panel (not shown).

消火栓受信部８６は、消火栓装置における消火栓弁開閉レバーの開操作に伴う信号、ポンプ起動スイッチの操作に伴う信号を受信した場合、これを制御部７０で認識して移報部７８から図示しないポンプ制御盤にポンプ起動信号を送信してポンプ運転を開始させる。また消火栓受信部８６は消火栓装置に設けている発信機の操作に伴う信号を受信して制御部７０により火災警報表示を行わせ、これに伴い制御部７０は応答信号を消火栓弁送信部８４から送信して消火栓装置に設けた応答ランプを点灯させる制御等を行う。   When the fire hydrant receiving unit 86 receives a signal associated with the opening operation of the fire hydrant valve opening / closing lever in the fire hydrant device and a signal associated with the operation of the pump start switch, the fire hydrant receiving unit 86 recognizes this and recognizes the pump from the transfer unit 78 (not shown). A pump start signal is transmitted to the control panel to start pump operation. The fire hydrant receiving unit 86 receives a signal associated with the operation of the transmitter provided in the fire hydrant device and causes the control unit 70 to display a fire alarm. In response, the control unit 70 sends a response signal from the fire hydrant valve transmitting unit 84. Control to transmit and turn on the response lamp provided in the fire hydrant device.

図５は図４の防災受信盤３６に設けた自動弁受信部８２の詳細を自動弁装置側の回路と共に示したブロック図である。図５において、防災受信盤３６の自動弁受信部８２は、自動弁装置１０に対し電源電圧＋Ｖｃのラインから電流検出抵抗６０を介して信号線４４を引き出しており、自動弁装置１０側の圧力スイッチ２８におけるスイッチ接点２８と終端抵抗４０及びテスト制水弁１４に設けた開閉検出スイッチ４６のスイッチ接点４６ａとバイバス抵抗５０を接続している。   FIG. 5 is a block diagram showing details of the automatic valve receiving unit 82 provided in the disaster prevention receiving board 36 of FIG. 4 together with a circuit on the automatic valve device side. In FIG. 5, the automatic valve receiver 82 of the disaster prevention receiving board 36 draws the signal line 44 from the power supply voltage + Vc line through the current detection resistor 60 to the automatic valve device 10, and the pressure on the automatic valve device 10 side. The switch contact 28 in the switch 28 is connected to the terminal resistor 40 and the switch contact 46 a of the open / close detection switch 46 provided in the test water control valve 14 and the bypass resistor 50.

自動弁受信部８２には、図３に示した自動弁装置１０側の３つの回路状態と断線を識別して検知するため、比較器６２，６４，６６が設けられ、それぞれのプラスに入力端子に検出電圧Ｖｘを入力し、また定電圧源により基準電圧Ｖｔｈ１〜Ｖｔｈ３を設定している。基準電圧Ｖｔｈ１〜Ｖｔｈ３は、Ｖｔｈ１＜Ｖｔｈ２＜Ｖｔｈ３
となるように設定している。 The automatic valve receiver 82 is provided with comparators 62, 64 and 66 for identifying and detecting the three circuit states and disconnections on the automatic valve device 10 side shown in FIG. The reference voltage Vth1 to Vth3 is set by a constant voltage source. The reference voltages Vth1 to Vth3 are Vth1 <Vth2 <Vth3.
It is set to become.

ここで、電流検出抵抗６０の抵抗値をＲ０とし、終端抵抗４０とバイバス抵抗５０について例えばＲ１＞Ｒ２とし、更にＲ０＝Ｒ２とした場合、第１〜第３回路状態で信号線４４に流れる電流をＩ１，Ｉ２，Ｉ３とすると、Ｉ３＞Ｉ１＞Ｉ２の関係となり、これに対応して防災受信盤３６の端子４５ａ，４５ｂ間に発生する検出電圧ＶｘをＶ１，Ｖ２，Ｖ３とすると、Ｖ２＞Ｖ１＞Ｖ３の関係となり、これを判別するためＶ３〜Ｖ１の間となる閾値電圧Ｖth１を比較器６２に設定し、Ｖ１〜Ｖ２の間となる閾値電圧Ｖth２を比較器６４に設定している。更に信号線４４が断線した場合には、検出電圧Ｖｘは略電源電圧＋Ｖｃに上昇することから、Ｖ３を超える閾値電圧Ｖｔｈ３を比較器６６に設定している。   Here, when the resistance value of the current detection resistor 60 is R0, the termination resistor 40 and the bypass resistor 50 are, for example, R1> R2, and further R0 = R2, the current that flows through the signal line 44 in the first to third circuit states. If I1, I2, and I3, then I3> I1> I2, and correspondingly, if the detected voltage Vx generated between the terminals 45a and 45b of the disaster prevention receiving board 36 is V1, V2, and V3, V2> In order to determine this, the threshold voltage Vth1 between V3 and V1 is set in the comparator 62, and the threshold voltage Vth2 between V1 and V2 is set in the comparator 64. Further, when the signal line 44 is disconnected, the detection voltage Vx rises to substantially the power supply voltage + Vc, and thus the threshold voltage Vth3 exceeding V3 is set in the comparator 66.

図６は図３の自動弁装置側の回路状態を防災受信盤３６の電流検出抵抗と共に示した回路図であり、端子４５ａ，４５ｂ間の検出電圧Ｖｘに対する比較器６２，６４，６６の出力は次のようになる。   FIG. 6 is a circuit diagram showing the circuit state on the automatic valve device side of FIG. 3 together with the current detection resistor of the disaster prevention receiving board 36. The outputs of the comparators 62, 64, 66 with respect to the detected voltage Vx between the terminals 45a, 45b are as follows. It becomes as follows.

（１）テスト制水弁全開状態（第１回路状態）
図６（Ａ）は第１回路状態を示す。この場合、検出電圧Ｖｘは
Ｖｘ＝Ｖｃ・Ｒ１／（Ｒｏ＋Ｒ１）
となり、Ｖｔｈ２＞Ｖｘ＞Ｖｔｈ１の関係にあることから、比較器６２，６４，６６の出力は（Ｈ Ｌ Ｌ）となる。この比較器出力に基づき制御部７０はテスト制水弁１４が全開であることを認識し、報知部７４で全開を報知（表示）する。 (1) Test water control valve fully open (first circuit state)
FIG. 6A shows the first circuit state. In this case, the detection voltage Vx is Vx = Vc · R1 / (Ro + R1)
Thus, since the relationship Vth2>Vx> Vth1 is established, the outputs of the comparators 62, 64, 66 are (H L L). Based on the comparator output, the control unit 70 recognizes that the test water control valve 14 is fully open, and notifies (displays) the fully open state by the notification unit 74.

（２）テスト制水弁非全開状態（第２回路状態）
図６（Ｂ）は第２回路状態を示す。この場合、検出電圧Ｖｘは
Ｖｘ＝Ｖｃ（Ｒ１＋Ｒ２）／（Ｒｏ＋Ｒ１＋Ｒ２）
となり、Ｖｔｈ３＞Ｖｘ＞Ｖｔｈ２の関係にあることから、比較器６２，６４，６６の出力は（Ｈ Ｈ Ｌ）となる。この比較器出力に基づき制御部７０はテスト放水弁１４の全開認識を解除（表示解除）させる。 (2) Test water control valve not fully open (second circuit state)
FIG. 6B shows the second circuit state. In this case, the detection voltage Vx is Vx = Vc (R1 + R2) / (Ro + R1 + R2)
Thus, since the relationship Vth3>Vx> Vth2 is established, the outputs of the comparators 62, 64, and 66 are (HHL). Based on the output of the comparator, the control unit 70 cancels (display cancels) the fully open recognition of the test water discharge valve 14.

（３）圧力スイッチオン状態（第３回路状態）
図６（Ｃ）は第３回路状態を示す。この場合、検出電圧Ｖｘは
Ｖｘ＝Ｖｃ・Ｒ２／（Ｒｏ＋Ｒ２）
となり、Ｖｔｈ１＞Ｖｘの関係にあることから、比較器６２，６４，６６の出力は（Ｌ Ｌ Ｌ）となる。この比較器出力に基づき制御部７０はテスト放水圧力正常を報知する。 (3) Pressure switch on state (third circuit state)
FIG. 6C shows the third circuit state. In this case, the detection voltage Vx is Vx = Vc · R2 / (Ro + R2)
Since Vth1> Vx, the outputs of the comparators 62, 64, 66 are (L L L). Based on the output of the comparator, the control unit 70 notifies the normal test water discharge pressure.

（４）信号線断線
信号線４４が断線すると断線監視電流が断たれ、端子４５ａ，４５ｂ間は開放インピーダンスとなり、検出電圧Ｖｘは電源電圧＋Ｖｃ付近に上昇し、Ｖｘ＞Ｖｔｈ３の関係にあることから、比較器６２，６４，６６の出力は（Ｈ Ｈ Ｈ）となる。この比較器出力に基づき制御部７０は信号線４４の断線警報を報知する。 (4) Signal line disconnection When the signal line 44 is disconnected, the disconnection monitoring current is interrupted, the impedance between the terminals 45a and 45b becomes an open impedance, the detection voltage Vx rises near the power supply voltage + Vc, and Vx> Vth3. The outputs of the comparators 62, 64 and 66 are (H H H). Based on the output from the comparator, the control unit 70 notifies a disconnection alarm of the signal line 44.

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。定常状態にあっては、テスト制水弁１４は全開位置にあり、開閉検出スイッチ４６のスイッチ接点４６ａはオンしている。この場合、防災受信盤３６は図３（Ａ）及び図６（Ａ）のように、第１回路状態の抵抗値Ｒ１と防災受信盤３６の電流検出抵抗Ｒ０に基づく電流Ｉ１が信号線４４に流れ、防災受信盤３６では図５の比較器６２，６４，６６の出力が（Ｈ Ｌ Ｌ）となり、これに基づき制御部７０がテスト制水弁１４の全開を認識して全開表示などを行う。   Next, the inspection operation of the automatic valve device in the embodiment of FIG. 1 will be described. In the steady state, the test water control valve 14 is in the fully open position, and the switch contact 46a of the open / close detection switch 46 is on. In this case, as shown in FIGS. 3 (A) and 6 (A), the disaster prevention receiving board 36 receives a current I1 based on the resistance value R1 in the first circuit state and the current detection resistance R0 of the disaster prevention receiving board 36 on the signal line 44. In the disaster prevention receiving board 36, the outputs of the comparators 62, 64, 66 of FIG. 5 become (H L L), and based on this, the control unit 70 recognizes the full opening of the test water control valve 14 and performs a full open display or the like. .

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がオフする。この場合、防災受信盤３６は、図３（Ｂ）及び図６（Ｂ）のように、第２回路状態の抵抗値（Ｒ１＋Ｒ２）と防災受信盤３６の電流検出抵抗Ｒ０に基づく電流Ｉ２が信号線４４に流れ、防災受信盤３６では図５の比較器６２，６４，６６の出力が（Ｈ Ｈ Ｌ）となり、これに基づき制御部７０がテスト制水弁１４の全開位置の認識を解除し、全開表示する。
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. In this case, as shown in FIGS. 3B and 6B, the disaster prevention receiving board 36 receives the current I2 based on the resistance value (R1 + R2) in the second circuit state and the current detection resistance R0 of the disaster prevention receiving board 36 as a signal. In the disaster prevention reception board 36, the outputs of the comparators 62, 64, 66 in FIG. , Display fully open.

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.

続いて防災受信盤３６で放水起動操作を行い、放水起動信号をパイロット弁１８に送って放水を開始させる。なお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。   Subsequently, a water discharge activation operation is performed by the disaster prevention receiving board 36, and a water discharge activation signal is sent to the pilot valve 18 to start water discharge. When starting the test water discharge in the 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 manual start valve 20 is opened. 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。この場合、防災受信盤３６は図３（Ｃ）及び図６（Ｃ）のように、第３回路状態の抵抗値Ｒ２と防災受信盤３６の電流検出抵抗Ｒ０に基づく電流Ｉ３が信号線４４に流れ、防災受信盤３６では図５の比較器６２，６４，６６の出力が（Ｌ Ｌ Ｌ）となり、これに基づき制御部７０が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の開放動作、圧力スイッチ２８の動作を含む機能の確認を行う。   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. In this case, as shown in FIGS. 3 (C) and 6 (C), the disaster prevention receiving board 36 has a current I3 based on the resistance value R2 in the third circuit state and the current detection resistance R0 of the disaster prevention receiving board 36 on the signal line 44. In the disaster prevention receiving board 36, the outputs of the comparators 62, 64, 66 of FIG. 5 become (L L L), and the control unit 70 displays the automatic valve operation based on this, whereby the operation of the automatic valve 12 and the pressure The function including the opening operation of the automatic valve 12 by the adjusting valve 22 and the operation of the pressure switch 28 is 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が確認できたら、防災受信盤３６で放水停止操作を行い、当該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。   When the automatic valve operation display by the ON signal of the pressure switch 28 is confirmed for the operation by the test water discharge, the water discharge stop operation is performed by the disaster prevention receiving board 36, and the pilot valve 18 is closed by the water discharge stop signal transmitted by the operation, or The manual start valve 20 is closed, and the automatic valve 12 is fully closed accordingly, and the test water discharge is stopped.

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。テスト放水を停止した場合、自動弁２４の二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。   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. When the test water discharge is stopped, 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７は防災受信盤に中継器を介して自動弁装置を接続した実施形態を示したブロック図である。図７において、防災受信盤３６からの距離が遠くなる自動弁装置１０や自動弁装置１０の設置数量が多い場合については、信号線４２，４４を直接防災受信盤３６と接続せず、中継器９０を経由して自動弁装置１０と接続する。なお、中継器９０は必要に応じて複数台設けられる。   FIG. 7 is a block diagram showing an embodiment in which an automatic valve device is connected to a disaster prevention receiving board via a repeater. In FIG. 7, in the case where the automatic valve device 10 and the automatic valve device 10 are installed at a large distance from the disaster prevention receiving board 36, the signal lines 42 and 44 are not directly connected to the disaster prevention receiving board 36, and the repeater The automatic valve device 10 is connected via 90. A plurality of repeaters 90 are provided as necessary.

中継器９０には、中継制御部９２、インタフェースユニット９４、自動弁送信部９６、自動弁受信部９８、火災検知部１００、消火栓送信部１０２及び消火栓受信部１０４が設けられる。   The repeater 90 includes a relay control unit 92, an interface unit 94, an automatic valve transmission unit 96, an automatic valve reception unit 98, a fire detection unit 100, a fire hydrant transmission unit 102, and a fire hydrant reception unit 104.

防災受信盤３６は基本的に図４の実施形態と同じであるが、中継器９０を経由して自動弁装置１０及び図示しない消火栓装置を接続するため、図４の自動弁送信部８０、自動弁受信部８２、火災検知部７２、消火栓送信部８４及び消火栓受信部８６は除かれ、その代わりにインタフェースユニット７５を設け、伝送信号線８６を介して中継器９０のインタフェースユニット９４と接続している。   The disaster prevention receiving board 36 is basically the same as the embodiment of FIG. 4, but the automatic valve transmission unit 80 of FIG. 4 is automatically connected to the automatic valve device 10 and a fire hydrant device (not shown) via the repeater 90. The valve receiver 82, the fire detector 72, the fire hydrant transmitter 84, and the fire hydrant receiver 86 are removed, and instead an interface unit 75 is provided and connected to the interface unit 94 of the repeater 90 via the transmission signal line 86. Yes.

中継器９０の自動弁送信部９６からは自動弁装置１０に対し信号線４２が引き出され、図１に示した自動弁装置１０のパイロット弁１８に接続している。また自動弁受信部９８からは自動弁装置１０に信号線４４が引き出され、図２に示したように、圧力スイッチ２８、終端抵抗４０、開閉検出スイッチ４６及びバイパス抵抗５０を接続している。なお、自動弁送信部９６及び自動弁受信部９８からの信号線４２，４４は自動弁装置毎に引き出されている。   A signal line 42 is drawn from the automatic valve transmitter 96 of the repeater 90 to the automatic valve device 10 and is connected to the pilot valve 18 of the automatic valve device 10 shown in FIG. Further, a signal line 44 is drawn from the automatic valve receiver 98 to the automatic valve device 10, and the pressure switch 28, the terminating resistor 40, the open / close detection switch 46, and the bypass resistor 50 are connected as shown in FIG. The signal lines 42 and 44 from the automatic valve transmission unit 96 and the automatic valve reception unit 98 are drawn for each automatic valve device.

自動弁装置１０の放水起動は、防災受信盤３６の操作部７６により放水起動操作を行うと、制御部７０は起動する自動弁装置のアドレスを指定した放水起動信号をインタフェースユニット７５から中継器９０に送信する。中継器９０は防災受信盤３６からの放水起動信号をインタフェースユニット９４で受信して中継制御部９２に出力する。中継制御部９２は受信した放水起動信号による自動弁装置のアドレス指定に基づき自動弁送信部９６の該当する信号線４２へ放水起動信号を送信し、自動弁装置１０のパイロット弁を開制御して放水を開始する。なお、テスト放水の場合は、操作部７６でテスト放水を行う自動弁装置のアドレスを選択する以外は同様となる。   When the automatic valve device 10 is discharged, when the operation unit 76 of the disaster prevention reception panel 36 performs the water discharge operation, the control unit 70 sends a water discharge start signal specifying the address of the automatic valve device to be started from the interface unit 75 to the repeater 90. Send to. The repeater 90 receives the water discharge activation signal from the disaster prevention receiving board 36 by the interface unit 94 and outputs it to the relay control unit 92. The relay control unit 92 transmits a water discharge start signal to the corresponding signal line 42 of the automatic valve transmission unit 96 based on the addressing of the automatic valve device by the received water discharge start signal, and controls the pilot valve of the automatic valve device 10 to open. Start water discharge. In addition, in the case of test water discharge, it becomes the same except selecting the address of the automatic valve apparatus which performs test water discharge with the operation part 76. FIG.

自動弁受信部９８には、図５に示した防災受信盤３６の自動弁受信部８２に設けた比較器６２，６４，６４と同じ自動弁装置１０における図３の３つの回路状態及び信号線４４の断線を識別して検知する回路が設けられている。このため自動弁装置１０のテスト放水を行った場合には、自動弁受信部８２に設けた３つの比較器の出力に基づき、中継制御部９２はテスト制水弁全開状態（第１回路状態）、テスト制水弁非全開状態（第２回路状態）、）圧力スイッチオン状態（第３回路状態）または信号線断線を判別して判別結果を防災受信盤３６に送信して報知させる。   The automatic valve receiver 98 includes three circuit states and signal lines in FIG. 3 in the same automatic valve device 10 as the comparators 62, 64, and 64 provided in the automatic valve receiver 82 of the disaster prevention receiver 36 shown in FIG. A circuit for identifying and detecting 44 disconnection is provided. For this reason, when the test water discharge of the automatic valve device 10 is performed, based on the outputs of the three comparators provided in the automatic valve receiving unit 82, the relay control unit 92 is in the test water control valve fully open state (first circuit state). The test water control valve is not fully opened (second circuit state), the pressure switch is on (third circuit state) or the signal line is disconnected, and the determination result is transmitted to the disaster prevention receiving board 36 for notification.

なお、上記の実施形態の防災受信盤としては、図５の自動弁装置を直接信号線で接続する構成と、図７の中継器を介して自動弁装置を信号線接続する構成の両方を備えた構成としても良い。   In addition, as a disaster prevention receiving board of said embodiment, it has both the structure which connects the automatic valve apparatus of FIG. 5 with a direct signal line, and the structure which connects an automatic valve apparatus to a signal line via the repeater of FIG. It is good also as a composition.

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付き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 that switches the water discharge pressure from a specified low pressure to a specified high pressure in two stages when 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にあっては防災受信盤または中継器に設けた比較器により自動弁装置側の３つの回路状態及び断線を識別して検知しているが、検出電圧をＡＤ変換器によりデジタルデータとして読込み、制御部として機能するプロセッサによるプログラムの実行により、予め設定した閾値電圧との比較により自動弁装置側の３つの回路状態及び断線を識別して検知するようにしても良い。   In the above embodiment, the three circuit states and disconnection on the automatic valve device side are identified and detected by the comparator provided in the disaster prevention reception board or repeater, but the detected voltage is digitally converted by the AD converter. The three circuit states and disconnection on the automatic valve device side may be identified and detected by comparison with a preset threshold voltage by executing a program by a processor functioning as a control unit that reads the data.

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：水噴霧ヘッド
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
５０：バイパス抵抗
６０：電流検出抵抗
６２，６４，６６：比較器
８０，９６：自動弁送信部
８２，９８：自動弁受信部
９０：中継器

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: Water spray head 34: Head pipe 36: Disaster prevention receiving board 40: Termination resistors 42 and 44: Signal line 46: Open / close detection switch 50: Bypass resistor 60: Current detection resistors 62, 64 and 66 : Comparator 80, 96: Automatic valve transmitter 82, 98: Automatic valve receiver 90: Repeater

Claims (5)

圧力調整弁による制御圧を受けて二次圧力を規定圧力に調圧した二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、前記自動弁の一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、前記自動弁の二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二次側に加圧水が流入し、前記自動弁の二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、前記信号線に断線監視電流を流す終端抵抗と、
を備えた自動弁装置に於いて、
前記信号線に接続され、前記テスト制水弁の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と、
前記開閉検出スイッチのスイッチ接点に並列接続され、前記終端抵抗と抵抗値の異なるバイパス抵抗と、
を設け、
前記開閉検出スイッチのスイッチ接点を、前記圧力スイッチのスイッチ接点と前記終端抵抗との並列回路に直列接続し、
前記信号線の端子間電圧に基づいて前記防災受信盤で前記圧力スイッチのオンオフ、前記開閉検出スイッチのオンオフ及び前記信号線の断線の有無を検知させ、少なくとも前記開閉検出スイッチのオフを検知した場合に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 that receives the control pressure from the pressure regulating valve and adjusts the secondary pressure to a specified pressure to supply water spray nozzles to spray water;
A pilot valve that is controlled to open by a control signal from a disaster prevention receiving 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;
Arranged on the secondary side of the automatic valve, is operated to the fully open position during steady, a test system water valve which is operated fully closed position during the test water discharge,
A test water discharge valve that is opened during a test water discharge and allows pressurized water to flow from the secondary side to the drain side of the automatic valve;
It is connected to a signal line from the disaster prevention receiving plate, pressure switch pressurized water flows into the secondary side of the automatic valve when the water discharge, the secondary side pressure of the automatic valve is turned on the switch contacts in the case of more than the predetermined pressure When,
Connected in parallel to the switch contact of the pressure switch, and the terminating resistor for flowing a disconnection monitoring current to the signal line,
In an automatic valve device equipped with
Connected to the signal line to turn on the switch contacts in the fully open position of the test system water valve, the opening and closing detection switch for turning off the switch contact in closing side position off the fully open position,
Wherein connected in parallel to the switch contact opening and closing detection switch, a bypass resistor having the different terminating resistor and the resistance value,
Provided,
The switch contact of the open / close detection switch is connected in series to a parallel circuit of the switch contact of the pressure switch and the termination resistor,
When the on / off of the pressure switch, the on / off of the open / close detection switch, and the presence / absence of the disconnection of the signal line are detected by the disaster prevention receiving board based on the voltage between the terminals of the signal line , and at least the open / close detection switch is detected to be off automatic valve device, wherein the test system water valve be informed that not in the fully open position to.
請求項１記載の自動弁装置に於いて、
前記テスト制水弁を全開位置に操作した場合の前記開閉検出スイッチのスイッチ接点オンにより前記バイパス抵抗の両端を短絡し、前記信号線に前記終端抵抗のみを接続した第１回路状態を生成し、当該第１回路状態を前記防災受信盤に検知させて前記テスト制水弁の全開を認識させ、
前記テスト制水弁を全開位置以外の閉側に操作した場合の前記開閉検出スイッチのスイッチ接点オフにより、前記信号線に前記終端抵抗と前記バイパス抵抗を直列接続した第２回路状態を生成し、当該第２回路状態を前記防災受信盤に検知させて前記テスト制水弁の全開認識を解除させ、
前記テスト制水弁を全開位置以外の閉側に操作し且つテスト放水により前記圧力スイッチのスイッチ接点がオンして前記終端抵抗の両端を短絡し、前記信号線に前記バイパス抵抗のみを接続した第３回路状態を生成し、当該第３回路状態を前記防災受信盤に検知させて自動弁開放を表示させることを特徴とする自動弁装置。
In the automatic valve device according to claim 1 ,
When the test water control valve is operated to the fully open position, both ends of the bypass resistor are short-circuited by turning on the switch contact of the open / close detection switch, and a first circuit state in which only the termination resistor is connected to the signal line is generated. Let the disaster prevention reception board detect the first circuit state to recognize full opening of the test water control valve ,
When the test water control valve is operated to the closed side other than the fully open position, the switch contact of the open / close detection switch generates a second circuit state in which the terminal resistor and the bypass resistor are connected in series to the signal line, Let the disaster prevention receiving board detect the second circuit state and release the fully open recognition of the test water control valve ,
The test water control valve is operated to the closed side other than the fully open position, and the switch contact of the pressure switch is turned on by test water discharge to short-circuit both ends of the terminal resistor, and only the bypass resistor is connected to the signal line. An automatic valve device that generates a three-circuit state, causes the disaster prevention reception board to detect the third circuit state, and displays an automatic valve opening.
請求項２記載の自動弁装置に於いて、In the automatic valve device according to claim 2,
前記信号線の端子間電圧に下側基準電圧、中間基準電圧及び上側基準電圧を設定し、Set the lower reference voltage, the intermediate reference voltage and the upper reference voltage to the voltage between the terminals of the signal line,
前記第１回路状態の場合に、前記下側基準電圧から前記中間基準電圧までの前記端子間電圧を前記防災受信盤に検出させ、In the case of the first circuit state, the disaster prevention receiving panel detects the terminal voltage from the lower reference voltage to the intermediate reference voltage,
前記第２回路状態の場合に、前記中間基準電圧から前記上側基準電圧までの前記端子間電圧を前記防災受信盤に検出させ、In the case of the second circuit state, the disaster prevention receiving panel detects the terminal voltage from the intermediate reference voltage to the upper reference voltage,
前記第３回路状態の場合に、前記下側基準電圧より低い前記端子間電圧を前記防災受信盤に検出させ、In the case of the third circuit state, the disaster prevention receiving panel detects the inter-terminal voltage lower than the lower reference voltage,
前記信号線が断線状態の場合は、前記上側基準電圧より高い前記端子間電圧を前記防災受信盤に検出させることを特徴とする自動弁装置。When the signal line is in a disconnected state, the automatic valve device causes the disaster prevention receiving panel to detect the inter-terminal voltage higher than the upper reference voltage.
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、前記防災受信盤からの信号線を、中継器を経由して前記開閉検出スイッチに接続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 a signal line from the disaster prevention receiving board is connected to the open / close detection switch via a repeater.
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