JP2014104004A - Automatic valve device - Google Patents

Automatic valve device Download PDF

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JP2014104004A
JP2014104004A JP2012256953A JP2012256953A JP2014104004A JP 2014104004 A JP2014104004 A JP 2014104004A JP 2012256953 A JP2012256953 A JP 2012256953A JP 2012256953 A JP2012256953 A JP 2012256953A JP 2014104004 A JP2014104004 A JP 2014104004A
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valve
automatic
pressure
water
automatic valve
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Kenichi Osaki
健一 大崎
Toshiaki Tonomura
賢昭 外村
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Hochiki Corp
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Hochiki Corp
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Abstract

PROBLEM TO BE SOLVED: To achieve prevention of breakage of devices due to remaining water by thoroughly draining the remaining water which is in a drive control system of an automatic valve and is associated with a halt of discharge of water from a water spray head.SOLUTION: An automatic valve device which supplies pressurized water to a water spray head installed inside a tunnel and discharges water has an automatic valve drive control system including an automatic valve drive part 14 having a piston/cylinder mechanism, a pilot valve 20, a manual activation valve 22, a pressure adjustment valve 24, and an automatic water drain valve 26 besides an automatic valve 12 and a test sluice valve. An air suction mechanism 32 is provided on the automatic valve drive control system. Air is suctioned by opening the air suction mechanism 32 when the discharge of water is halted by the automatic valve 12 so as to promote drainage of the pressurized water filled in the pilot valve 20, the manual activation valve 22, the pressure adjustment valve 24, a cylinder chamber 46a of the automatic valve drive part 14 in the automatic valve drive control system, and the like from the automatic water drain valve 26.

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.

自動弁装置は、自動弁の1次側に消火配管を接続して加圧水を供給し、自動弁の2次側をテスト用制水弁を介してトンネル内に配置した水噴霧ヘッドに接続している。自動弁はピストン・シリンダ機構を備えた駆動部により開閉する。自動弁の駆動制御系としては、1次側加圧水を供給する止水弁に続いてパイロット弁と手動起動弁を並列接続し、続いて圧力調整弁を介して自動弁の駆動部に接続している。   The automatic valve device connects a fire extinguishing pipe to the primary side of the automatic valve to supply pressurized water, and connects the secondary side of the automatic valve to a water spray head disposed in the tunnel via a water control valve for testing. Yes. The automatic valve is opened and closed by a drive unit equipped with a piston / cylinder mechanism. As a drive control system for the automatic valve, a pilot valve and a manual start valve are connected in parallel, followed by a stop valve for supplying primary-side pressurized water, and then connected to a drive part of the automatic valve via a pressure adjustment valve. Yes.

運用時は止水弁を解放し、パイロット弁及び手動起動弁を閉鎖した状態とすることで、自動弁駆動部に対する加圧水の供給を遮断することで自動弁を閉じている。火災時には、パイロット弁が遠隔的に開制御され、圧力調整弁を介して1次側加圧水を自動弁駆動部に供給することで自動弁を開き、水噴霧ヘッドに加圧水を供給して放水させる。水噴霧ヘッドの放水中は、圧力調整弁の圧力制御により2次側放水圧力を所定の設定圧に制御する。火災が鎮火した場合には、パイロット弁を遠隔的に閉制御すると、自動弁駆動部に対する加圧水の供給が停止して自動弁を閉じ、水噴霧ヘッドからの放水を停止する。   During operation, the stop valve is released and the pilot valve and the manual start valve are closed, so that the automatic valve is closed by shutting off the supply of pressurized water to the automatic valve drive unit. In the event of a fire, the pilot valve is remotely controlled to open, and the automatic valve is opened by supplying the primary-side pressurized water to the automatic valve drive unit via the pressure regulating valve, and the pressurized water is supplied to the water spray head and discharged. During the water discharge of the water spray head, the secondary side water discharge pressure is controlled to a predetermined set pressure by the pressure control of the pressure adjusting valve. When the fire is extinguished, when the pilot valve is remotely controlled to be closed, the supply of pressurized water to the automatic valve driving unit is stopped, the automatic valve is closed, and water discharge from the water spray head is stopped.

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の点検は、点検員がトンネル内に出向いて自動弁の2次側に設けているテスト用制水弁をハンドル操作により閉鎖し、自動弁の2次側から排水系に至るテスト放水用の経路を準備し、この状態で例えば手動起動弁を開操作して自動弁を開き、水噴霧ヘッドから実放水することなく排水系にテスト放水して動作性能を確認する。点検が終了した場合は、手動起動弁を閉操作して自動弁を閉じ、更に閉鎖状態とした自動弁2次側のテスト用制水弁を再開放して定常状態に戻している。
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 is carried out by the inspector going into the tunnel and closing the test water control valve provided on the secondary side of the automatic valve by operating the handle, and switching from the secondary side of the automatic valve to the drainage system. In this state, for example, a manual start valve is opened to open an automatic valve, and a test spray is discharged to the drainage system without actually discharging water from the water spray head to confirm the operation performance. When the inspection is completed, the manual start valve is closed to close the automatic valve, and the automatic control valve on the secondary side of the closed automatic valve is reopened to return to the steady state.

特開2002−120898号公報JP 2002-120898 A 特開2012−040064号公報JP 2012-040064 A

ところで、トンネル用の自動弁装置において、火災時またはテスト放水時に自動弁を開いて水噴霧ヘッドから加圧水を放水し、その後、自動弁を閉じて放水を停止すると、自動弁駆動制御系内に加圧水が滞留して残水となる。そこで、自動弁駆動制御系内の残水を排出するために自動排水弁を設けている。自動排水弁は、放水停止に伴う自動弁駆動制御系内の加圧水の圧力低下により自動的に開放し、自動弁駆動系統内に滞留している残水を排出可能としている。   By the way, in a tunnel automatic valve device, when a fire or a test water discharge, the automatic valve is opened to discharge pressurized water from the water spray head, and then the automatic valve is closed to stop the water discharge. Stays and becomes residual water. Therefore, an automatic drain valve is provided to discharge residual water in the automatic valve drive control system. The automatic drain valve is automatically opened when the pressure of the pressurized water in the automatic valve drive control system is reduced due to the stoppage of water discharge, and the residual water remaining in the automatic valve drive system can be discharged.

しかしながら、自動排水弁が加圧水の圧力低下に伴い開放した場合、排水側に繋がっている自動排水弁の2次側から空気が流入する以外、空気の流入口がないため、自動排水弁が開放しても、自動弁駆動制御系内の残水を十分に排水することができず、残水による腐食や凍結などに起因して機器を破損する恐れがあった。   However, when the automatic drain valve opens due to the pressure drop of the pressurized water, the automatic drain valve opens because there is no air inlet except for air flowing in from the secondary side of the automatic drain valve connected to the drain side. However, the remaining water in the automatic valve drive control system could not be sufficiently drained, and there was a risk of damage to the equipment due to corrosion or freezing due to the remaining water.

また、自動弁駆動制御系に設けた止水弁の2次側には排気弁を設けており、排気弁は施工時に止水弁とパイロット弁及び手動起動弁の間のエアー抜きに使用する。このため自動弁を閉じて放水を停止した場合に、止水弁を閉じて排気弁を開き、更に手動起動弁を開けば、排気弁から空気を吸入し、自動弁駆動制御系内の残水を自動排水弁から十分に排水することも可能である。しかし、運用中の定常時は、止水弁を開放し、パイロット弁及び自動起動弁を閉止しているため、排気弁を開いただけでは吸気口として使用することはできず、排気弁から空気を吸入するためには、止水弁の閉操作及び手動起動弁の開操作を必要とし、排水後は、それぞれ元の状態に戻さなければならず、吸気のための操作が煩雑で手間と時間がかかり、実用化には無理がある。   In addition, an exhaust valve is provided on the secondary side of the water stop valve provided in the automatic valve drive control system, and the exhaust valve is used for venting the air between the water stop valve, the pilot valve and the manual start valve during construction. For this reason, when the automatic valve is closed and the water discharge is stopped, if the water stop valve is closed and the exhaust valve is opened, and further the manual start valve is opened, air is sucked from the exhaust valve and the remaining water in the automatic valve drive control system Can be sufficiently drained from the automatic drain valve. However, since the water stop valve is opened and the pilot valve and the automatic start valve are closed during normal operation, the exhaust valve cannot be used as an intake port. In order to inhale, it is necessary to close the water stop valve and open the manual start valve.After draining, the water must be returned to the original state. It is impossible to put it into practical use.

本発明は、水噴霧ヘッドからの放水停止に伴う自動弁駆動制御系内の残水を十分に排水して、残水に起因した機器破損を防止可能とする自動弁装置を提供することを目的とする。
It is an object of the present invention to provide an automatic valve device that can sufficiently drain residual water in an automatic valve drive control system that accompanies stoppage of water discharge from a water spray head to prevent equipment damage due to residual water. And

(自動弁装置)
本発明は、
ピストン・シリンダ機構を備えた自動弁駆動部による本体内部に設けた弁体の開放で、1次側から供給された加圧水を2次側の水噴霧ノズルへ供給して放水させると共に、自動弁駆動部による弁体の閉鎖で、水噴霧ノズルからの放水を停止させる自動弁と、
自動弁の2次側に配置され、定常時に開放され、テスト放水時に閉鎖されるテスト用制水弁と、
水噴霧又はテスト放水を行う場合に開放され、自動弁の1次圧側加圧水を弁体の開放圧として自動弁駆動部へ供給するパイロット弁と、
パイロット弁に並列に接続され、手動操作により開放されて自動弁の1次圧側加圧水を弁体の開放圧として自動弁駆動部へ供給する手動起動弁と、
パイロット弁又は手動起動弁の開放により供給された1次側加圧水の圧力を調整した調整圧を自動弁駆動部に供給して弁体の駆動により2次側加圧水の圧力を所定の放水圧に制御する圧力調整弁と、
パイロット弁又は手動起動弁を閉鎖して自動弁の放水停止により2次側加圧水の圧力が所定の排水開放圧以下に低下した場合に開放し、パイロット弁、手動起動弁、圧力調整弁及び自動弁駆動部を含む自動弁駆動制御系内に充水された加圧水を排水する自動排水弁と、
を備えた自動弁装置に於いて、
自動弁による放水を停止した場合に大気を吸入して、自動弁駆動制御系内に充水された加圧水の自動排水弁からの排水を助長する吸気機構を設けたことを特徴とする。
(Automatic valve device)
The present invention
By opening the valve body provided inside the main body by an automatic valve drive unit equipped with a piston / cylinder mechanism, the pressurized water supplied from the primary side is supplied to the water spray nozzle on the secondary side to discharge the water, and the automatic valve is driven. An automatic valve that stops water discharge from the water spray nozzle by closing the valve body by the part,
A test water control valve which is arranged on the secondary side of the automatic valve, is opened in a steady state and is closed in a test water discharge;
A pilot valve that is opened when water spraying or test water discharge is performed, and that supplies the primary valve side pressurized water of the automatic valve to the automatic valve drive unit as the opening pressure of the valve body;
A manual start valve connected in parallel to the pilot valve and opened by manual operation to supply the primary pressure side pressurized water of the automatic valve to the automatic valve drive as the opening pressure of the valve body;
Adjusting the pressure of the primary side pressurized water supplied by opening the pilot valve or the manual start valve is supplied to the automatic valve drive unit, and the pressure of the secondary side pressurized water is controlled to a predetermined discharge pressure by driving the valve element. A pressure regulating valve to
Open when the pilot or manual start valve is closed and the pressure of the secondary pressurized water drops below the specified drainage release pressure due to the stoppage of the automatic valve. The pilot valve, manual start valve, pressure adjustment valve and automatic valve are opened. An automatic drain valve for draining pressurized water filled in an automatic valve drive control system including a drive unit;
In an automatic valve device equipped with
An air intake mechanism that sucks in air when water discharge by the automatic valve is stopped and promotes drainage from the automatic drain valve of pressurized water filled in the automatic valve drive control system is provided.

(吸気口を高い位置に配置)
吸気機構は、自動弁、圧力調整弁、パイロット弁及び手動起動弁の設置位置に対し高くなる所定位置に設ける。
(The intake port is placed at a high position.)
The intake mechanism is provided at a predetermined position that is higher than the installation positions of the automatic valve, the pressure adjusting valve, the pilot valve, and the manual start valve.

(パイロット弁側の吸気機構)
吸気機構を、パイロット弁及び手動起動弁の2次側配管部分に設ける。
(Pilot valve side intake mechanism)
An intake mechanism is provided in the secondary piping portion of the pilot valve and the manual start valve.

(自動弁駆動部の吸気機構)
吸気機構を、自動弁の駆動部に設ける。
(Intake mechanism of automatic valve drive)
An intake mechanism is provided in the drive part of the automatic valve.

(パイロット弁側と自動弁駆動部の吸気機構)
吸気機構を、パイロット弁及び手動起動弁の2次側配管部分及び自動弁駆動部の各々に設ける。
(Pilot valve side and automatic valve drive intake mechanism)
An intake mechanism is provided in each of the secondary side piping part and the automatic valve driving part of the pilot valve and the manual start valve.

(自動弁駆動部の吸気機構詳細)
自動弁駆動部は、
弁体に連結したピストンと、
ピストンを摺動自在に設けたシリンダと、
ピストンを弁体の閉鎖方向に付勢するスプリングと、
ピストンで仕切られた一方のシリンダ室に対する加圧水の供給によりピストンを弁開方向にストロークさせると共に加圧水の排水によりピストンを弁閉方向にストロークさせる加圧水入出力ポートと、
を備え、
吸気機構は、一方のシリンダ室に連通する吸気ポートに設ける。
(Details of intake mechanism of automatic valve drive)
Automatic valve drive
A piston connected to the valve body;
A cylinder slidably provided with a piston;
A spring that biases the piston in the closing direction of the valve body;
A pressurized water input / output port that causes the piston to stroke in the valve opening direction by supplying pressurized water to one cylinder chamber partitioned by the piston, and causes the piston to stroke in the valve closing direction by draining pressurized water;
With
The intake mechanism is provided in an intake port that communicates with one of the cylinder chambers.

(吸気機構の詳細)
吸気機構は、キャップ部材の着脱により吸気口を開閉するキャップ構造、開閉操作により吸気口を開閉する吸気弁、または、充水した加圧水の圧力が自動排水弁の排水開放圧以下に低下した場合に開放して吸気口を開く自動吸気弁とする。
(Details of intake mechanism)
The intake mechanism is a cap structure that opens and closes the intake port by attaching and detaching the cap member, an intake valve that opens and closes the intake port by opening and closing operation, or when the pressure of the filled pressurized water drops below the drainage release pressure of the automatic drain valve An automatic intake valve that opens to open the intake port.

(基本的な効果)
本発明によれば、自動弁のピストン・シリンダ機構を備えた自動弁駆動部、パイロット弁、手動起動弁、圧力調整弁を含む自動弁駆動制御系に吸気機構を設け、自動弁を閉じて放水を停止することで、自動弁駆動制御系内の加圧水の圧力が所定の排水開放圧以下に低下して自動排水弁が開放した場合に、吸気機構から大気に吸入して、自動弁駆動制御系内に充水された加圧水の自動排水弁からの排水を助長するようにしたため、吸気機構から自動排水弁の1次側となる自動弁駆動制御系内に空気が吸入され、自動弁の駆動部(シリンダ室)、圧力調整弁、パイロット弁及び手動起動弁の残水を、開放した自動排水弁から十分に排水することができ、自動弁駆動制御系に含まれる自動弁駆動部、圧力調整弁、パイロット弁、手動起動弁、圧力スイッチなどの各種機器の残水の凍結や腐食に起因した破損を未然に防止することを可能とする。
(Basic effect)
According to the present invention, an intake mechanism is provided in an automatic valve drive control system including an automatic valve drive unit including a piston / cylinder mechanism of an automatic valve, a pilot valve, a manual start valve, and a pressure adjustment valve, and the automatic valve is closed to discharge water. When the pressure of the pressurized water in the automatic valve drive control system falls below the predetermined drainage release pressure and the automatic drain valve opens, the automatic valve drive control system Since the drainage from the automatic drain valve of pressurized water filled inside is facilitated, air is sucked into the automatic valve drive control system on the primary side of the automatic drain valve from the intake mechanism, and the automatic valve drive unit (Cylinder chamber), pressure control valve, pilot valve and manual start valve can be drained from the open automatic drain valve sufficiently, automatic valve drive part included in the automatic valve drive control system, pressure control valve , Pilot valve, manual start valve, pressure gauge The damage caused by freezing or corrosion of the residual water in various devices, such as pitch makes it possible to prevent.

(吸気口を高い位置に配置した場合の効果)
また、吸気機構は、自動弁、圧力調整弁、パイロット弁及び手動起動弁の設置位置に対し高くなる所定位置に設けるようにしたため、加圧水が充水している自動弁の駆動部、圧力調整弁、パイロット弁、手動起動弁等の機器に充水している加圧水の滞留位置よりも高い位置から空気を吸入することで、吸気機構より低い位置に滞留している残水を、自動開放した自動排水弁から短い時間で十分に排水することができる。
(Effect when the intake port is placed at a high position)
In addition, since the intake mechanism is provided at a predetermined position that is higher than the installation positions of the automatic valve, the pressure adjustment valve, the pilot valve, and the manual start valve, the automatic valve drive unit and the pressure adjustment valve that are filled with pressurized water Automatic release of residual water staying at a position lower than the intake mechanism by sucking air from a position higher than the staying position of the pressurized water filling the equipment such as pilot valve and manual start valve The drainage valve can be drained sufficiently in a short time.

(パイロット弁側の吸気機構を配置した場合の効果)
また、吸気機構を、パイロット弁及び手動起動弁の2次側配管部分に設けることにより、パイロット弁及び手動起動弁の2次側から圧力調整弁を経由して自動排水弁に至る経路の残水を十分に排水することができる。
(Effect when the pilot valve side intake mechanism is arranged)
Further, by providing an intake mechanism in the secondary piping portion of the pilot valve and the manual start valve, residual water in the path from the secondary side of the pilot valve and the manual start valve to the automatic drain valve via the pressure adjustment valve Can be drained sufficiently.

(自動弁駆動部に吸気機構を配置した場合の効果)
また、吸気機構を、自動弁駆動部に設けることにより、自動弁駆動部(シリンダ室)から圧力調整弁を経由して自動排水弁に至る経路の残水を十分に排水することができる。
(Effect when the intake mechanism is arranged in the automatic valve drive)
Also, by providing the intake mechanism in the automatic valve drive unit, the remaining water in the path from the automatic valve drive unit (cylinder chamber) through the pressure adjustment valve to the automatic drain valve can be sufficiently drained.

(パイロット弁側と自動弁駆動部に吸気機構を配置した場合の効果)
また、吸気機構を、パイロット弁及び手動起動弁の2次側配管部分岐及び自動弁の駆動部の各々に設けることにより、パイロット弁及び手動起動弁の2次側から圧力調整弁を経由して自動排水弁に至る経路の残水、及び自動弁の駆動部(シリンダ室)から圧力調整弁を経由して自動排水弁に至る経路の残水を十分に排水することができる。
(Effect when the intake mechanism is arranged on the pilot valve side and the automatic valve drive)
Further, by providing the intake mechanism in each of the secondary side piping section branch of the pilot valve and the manual start valve and the drive section of the automatic valve, the secondary side of the pilot valve and the manual start valve passes through the pressure adjustment valve. It is possible to sufficiently drain the remaining water on the path leading to the automatic drain valve and the remaining water on the path leading to the automatic drain valve from the driving part (cylinder chamber) of the automatic valve via the pressure regulating valve.

(吸気機構の構造による効果)
吸気機構は、キャップ部材の着脱により吸気口を開閉するキャップ構造とすることで、簡単且つ低コストで実現できる。
(Effects of intake mechanism structure)
The intake mechanism can be realized easily and at low cost by adopting a cap structure that opens and closes the intake port by attaching and detaching the cap member.

また、吸気機構を、開閉操作により吸気口を開閉する吸気弁とすることで、構造が簡単で操作も容易にできる。   Further, the intake mechanism is an intake valve that opens and closes the intake port by an opening / closing operation, so that the structure is simple and the operation can be facilitated.

更に、吸気機構を、充水した加圧水の圧力が自動排水弁の排水開放圧以下に低下した場合に開放して吸気口を開く自動吸気弁とすることで、任意的な操作を必要とすることなく、自動的に外気を吸入して残水を十分に排水することができる。
Furthermore, when the pressure of the filled pressurized water drops below the drain opening pressure of the automatic drain valve, the intake mechanism is an automatic intake valve that opens and opens the intake port. The remaining water can be sufficiently drained by automatically inhaling outside air.

本発明による自動弁装置の第1実施形態を示した外観説明図External appearance explanatory view showing a first embodiment of an automatic valve device according to the present invention 図1の自動弁装置における自動弁駆動制御系の実施形態を示した説明図Explanatory drawing which showed embodiment of the automatic valve drive control system in the automatic valve apparatus of FIG. 図1の自動弁装置における自動弁駆動制御系の実施形態を、機器シンボルを用いて示した説明図1 is an explanatory diagram showing an embodiment of an automatic valve drive control system in the automatic valve device of FIG. 1 using equipment symbols. キャップ構造による吸気機構の実施形態を示した説明図Explanatory drawing which showed embodiment of the intake mechanism by a cap structure 吸気弁による吸気機構の実施形態を示した説明図Explanatory drawing which showed embodiment of the intake mechanism by an intake valve 自動吸気弁による吸気機構の実施形態を示した説明図Explanatory drawing which showed embodiment of the intake mechanism by an automatic intake valve 本発明の自動弁装置の第2実施形態を示した説明図Explanatory drawing which showed 2nd Embodiment of the automatic valve apparatus of this invention 図7の自動弁装置を、機器シンボルを用いて示した説明図Explanatory drawing which showed the automatic valve apparatus of FIG. 7 using the apparatus symbol. 吸入機構を2箇所に設けた本発明による自動弁装置の第3実施形態を示した説明図Explanatory drawing which showed 3rd Embodiment of the automatic valve apparatus by this invention which provided the suction mechanism in two places.

[自動弁装置の概要]
図1は本発明による自動弁装置の実施形態を示した外観説明図である。図1に示すように、自動弁装置10は、自動弁12、テスト用制水弁16、止水弁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、手動排水弁28、圧力スイッチ30で構成し、これに加え本発明にあっては、吸気機構32を新たに設けている。
[Outline of automatic valve device]
FIG. 1 is an external explanatory view showing an embodiment of an automatic valve device according to the present invention. As shown in FIG. 1, the automatic valve device 10 includes an automatic valve 12, a test water control valve 16, a water stop valve 18, a pilot valve 20, a manual start valve 22, a pressure adjustment valve 24, an automatic drain valve 26, a manual drain valve. The valve 28 and the pressure switch 30 are included, and in addition to this, the intake mechanism 32 is newly provided in the present invention.

吸気機構32を設けたことで、自動弁12を閉じて放水を停止することで自動弁駆動制御系内の加圧水の圧力が所定の排水開放圧以下に低下して自動排水弁26が開放した場合に、吸気機構32から大気を吸入して、自動弁駆動制御系内に充水された加圧水の自動排水弁26からの排水を助長するようにしている。なお、止水弁18の2次側には排気弁31を設けている。   By providing the intake mechanism 32, when the automatic valve 12 is closed and the water discharge is stopped, the pressure of the pressurized water in the automatic valve drive control system drops below a predetermined drainage release pressure and the automatic drain valve 26 opens. In addition, air is sucked from the intake mechanism 32 to facilitate drainage from the automatic drain valve 26 of pressurized water filled in the automatic valve drive control system. An exhaust valve 31 is provided on the secondary side of the water stop valve 18.

[自動弁装置の構成]
図2は図1の自動弁装置の第1実施形態を示した説明図、図3は図2の自動弁装置における自動弁駆動制御系を、機器シンボルを用いて示した説明図である。
[Configuration of automatic valve device]
2 is an explanatory view showing a first embodiment of the automatic valve device of FIG. 1, and FIG. 3 is an explanatory view showing an automatic valve drive control system in the automatic valve device of FIG. 2 using device symbols.

(自動弁の構成)
図2及び図3に示すように、自動弁12は弁本体34と自動弁駆動部14で構成する。弁本体34は給水配管(図示せず)から加圧水が供給される1次側の流入口36とテスト用制水弁16を介して水噴霧ヘッド側を接続する2次側の流出口38を備え、両者を仕切る内部の仕切壁の弁穴に弁座40を形成している。
(Configuration of automatic valve)
As shown in FIGS. 2 and 3, the automatic valve 12 includes a valve body 34 and an automatic valve drive unit 14. The valve body 34 includes a primary side inlet 36 to which pressurized water is supplied from a water supply pipe (not shown) and a secondary side outlet 38 that connects the water spray head side through the test water control valve 16. The valve seat 40 is formed in the valve hole of the internal partition wall that partitions the two.

自動弁駆動部14はシリンダ46内にピストン44を摺動自在に収納し、ピストン44から弁本体34内に延在した先端部分に弁体42を装着し、弁座40に対し弁体42を開閉自在に支持している。弁体42には軸方向にステム48を連結し、ステム48はシリンダ46の上部から外部に取出してピストン44のストロークをガイドしており、ピストン44の内部には弁体42を閉鎖方向に付勢するスプリング50を設けている。   The automatic valve drive unit 14 slidably houses a piston 44 in a cylinder 46, attaches a valve body 42 to a tip portion extending from the piston 44 into the valve body 34, and attaches the valve body 42 to the valve seat 40. Supports opening and closing freely. A stem 48 is connected to the valve body 42 in the axial direction. The stem 48 is taken out from the upper part of the cylinder 46 to guide the stroke of the piston 44. The valve body 42 is attached to the inside of the piston 44 in the closing direction. A spring 50 is provided.

ピストン44で仕切られた一方のシリンダ室46aに対しては入出力ポート52を連通し、ここから加圧水をシリンダ室に供給することで、スプリング50に抗してピストン44を図示上方にストロークして弁体44を弁座40から離して自動弁12を開き、入出力ポート52から加圧水を排出することで、スプリング50によりピストン44を図示下方にストロークして弁体44を弁座40に当接して自動弁12を閉じる。   An input / output port 52 is connected to one cylinder chamber 46a partitioned by the piston 44, and by supplying pressurized water from this to the cylinder chamber, the piston 44 is stroked upward in the figure against the spring 50. The valve body 44 is moved away from the valve seat 40 to open the automatic valve 12, and the pressurized water is discharged from the input / output port 52, so that the piston 44 is stroked downward in the drawing by the spring 50 to bring the valve body 44 into contact with the valve seat 40. The automatic valve 12 is closed.

(自動弁駆動制御系の構成)
自動弁12を開閉駆動するための自動弁駆動制御系は、止水弁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及び手動排水弁28を備える。止水弁18は運用中の定常監視状態で開放している。パイロット弁20は定常監視状態で閉制御されており、水噴霧又はテスト放水を行う場合に遠隔的に開制御され、弁本体34の1次圧側の加圧水を自動弁駆動部14へ開放圧として供給して自動弁12を開き、放水停止の際には、遠隔的に閉制御されると自動弁駆動部14に対する加圧水の供給を停止して自動弁12を閉じる。
(Configuration of automatic valve drive control system)
The automatic valve drive control system for opening and closing the automatic valve 12 includes a water stop valve 18, a pilot valve 20, a manual activation valve 22, a pressure adjustment valve 24, an automatic drain valve 26 and a manual drain valve 28. The water stop valve 18 is opened in a steady monitoring state during operation. The pilot valve 20 is controlled to be closed in a steady monitoring state, and is remotely controlled to open when water spray or test water discharge is performed, and the pressurized water on the primary pressure side of the valve body 34 is supplied to the automatic valve drive unit 14 as an open pressure. Then, when the automatic valve 12 is opened and the water discharge is stopped, if the remote control is remotely performed, the supply of the pressurized water to the automatic valve driving unit 14 is stopped and the automatic valve 12 is closed.

手動起動弁22はパイロット弁20と並列に接続され、テスト放水時などに手動により開操作され、1次圧側の加圧水を自動弁駆動部14へ開放圧として供給して自動弁12を開き、テスト放水終了で閉操作すると、自動弁駆動部14に対する加圧水の供給を停止して自動弁12を閉じる。   The manual start valve 22 is connected in parallel with the pilot valve 20 and is manually opened at the time of test discharge, etc., and the pressurized water on the primary pressure side is supplied as an open pressure to the automatic valve drive unit 14 to open the automatic valve 12 for testing. When the closing operation is performed at the end of water discharge, the supply of pressurized water to the automatic valve driving unit 14 is stopped and the automatic valve 12 is closed.

(圧力調整弁の構成)
圧力調整弁24は、パイロット弁20又は手動起動弁22の開放により供給された1次側加圧水の圧力を調整した調整圧を自動弁駆動部14に供給し、弁体42の開閉駆動により2次側加圧水の圧力を規定放水圧力に制御する。
(Configuration of pressure regulating valve)
The pressure adjustment valve 24 supplies an adjustment pressure obtained by adjusting the pressure of the primary pressurized water supplied by opening the pilot valve 20 or the manual start valve 22 to the automatic valve drive unit 14, and the secondary pressure by driving the valve body 42 to open and close. The pressure of the side pressurized water is controlled to the specified discharge pressure.

圧力調整弁24の詳細は、シンボル表現された図3に示すように、上下に分けて示す2つの切替位置をもち、この切替位置は下側に設けた圧力設定スプリング54のスプリング荷重と、上側のパイロットポートPLに加わる2次圧による力のバランスで切り替わる。   The details of the pressure regulating valve 24 have two switching positions divided into upper and lower parts as shown in FIG. 3 represented by symbols. These switching positions are the spring load of the pressure setting spring 54 provided on the lower side and the upper side. The pilot port PL is switched according to the balance of force applied by the secondary pressure.

また圧力調整弁24内には第2弁体58を設けており、第2弁体58はパイロットポートPLの水圧により、1次圧ポートP1及びシリンダポートCLと2次圧ポートP2との連通量を制御するものであり、初期状態では極わずかに連通してほぼ切り離された状態であり、パイロットポートPLの圧力が上昇するにつれ、連通量が多くなるものである。   A second valve body 58 is provided in the pressure regulating valve 24. The second valve body 58 communicates with the primary pressure port P1, the cylinder port CL, and the secondary pressure port P2 by the water pressure of the pilot port PL. The amount is controlled, and in an initial state, it is in a state of being slightly disconnected and almost disconnected, and the amount of communication increases as the pressure of the pilot port PL increases.

パイロット弁20の開制御により1次側の加圧水が1次圧ポートP1に加わる初期状態で圧力調整弁24は、図示の下側の切替位置にあり、1次圧ポートP1がシリンダポートCLに連通し、自動弁駆動部14のシリンダ室46aに加圧水を供給して自動弁12を開駆動する。   In an initial state in which primary pressurized water is applied to the primary pressure port P1 by opening control of the pilot valve 20, the pressure regulating valve 24 is in the lower switching position in the figure, and the primary pressure port P1 communicates with the cylinder port CL. Then, pressurized water is supplied to the cylinder chamber 46a of the automatic valve drive unit 14 to open the automatic valve 12.

自動弁12の開駆動により、パイロットポートPLに加わる2次圧が圧力設定スプリング54で決まる規定放水圧力より低い場合は、図示の下側の切替位置にあり、1次圧ポートP1がシリンダポートCLに連通し、2次圧ポートP2は第2弁体58により1次圧ポートP1及びシリンダポートCLと絞られて連通した状態である。   When the secondary pressure applied to the pilot port PL is lower than the specified discharge pressure determined by the pressure setting spring 54 due to the opening drive of the automatic valve 12, it is in the lower switching position in the figure and the primary pressure port P1 is the cylinder port CL. The secondary pressure port P2 is in a state where it is throttled and communicated with the primary pressure port P1 and the cylinder port CL by the second valve body 58.

パイロットポートPLに加わる2次圧が圧力設定スプリング54で決まる規定放水圧力より高くなると、圧力調整弁24は上側の切替位置に切り替わる。この上側の切替位置では、1次圧ポートP1がシリンダポートCLから切り離され、シリンダポートCLと2次圧ポートP2が完全に連通した状態となる。   When the secondary pressure applied to the pilot port PL becomes higher than the specified water discharge pressure determined by the pressure setting spring 54, the pressure regulating valve 24 is switched to the upper switching position. In this upper switching position, the primary pressure port P1 is disconnected from the cylinder port CL, and the cylinder port CL and the secondary pressure port P2 are in complete communication.

更に、圧力調整弁24のシリンダポートCLと2次圧ポートP2及びパイロットポートPLの分岐部分に対しては閉鎖遅延弁56が設けられている。この閉鎖遅延弁56は、圧力調整弁24に一体に組み込まれ、シリンダポートCLと自動弁12の2次側に通じるパイロットポートPLとの間にオリフィス流路を形成し常時連通しているもので、閉鎖遅延部56は自動弁12を閉じる際にシリンダ室の加圧水をゆっくり抜くことで、自動弁12を閉鎖する際の衝撃を和らげる。   Further, a closed delay valve 56 is provided at a branch portion of the cylinder port CL, the secondary pressure port P2 and the pilot port PL of the pressure regulating valve 24. The closing delay valve 56 is integrally incorporated in the pressure regulating valve 24, and forms an orifice channel between the cylinder port CL and the pilot port PL communicating with the secondary side of the automatic valve 12, and is always in communication. The closing delay unit 56 softens the impact when closing the automatic valve 12 by slowly removing the pressurized water from the cylinder chamber when the automatic valve 12 is closed.

(自動弁装置の動作)
ここで図2及び図3を参照して、自動弁12の開放からヘッド散水中の圧力制御、更に自動弁12の閉鎖により放水を停止までの動作を説明する。
(Operation of automatic valve device)
Here, with reference to FIG. 2 and FIG. 3, the operation from the opening of the automatic valve 12 to the pressure control during the sprinkling of the head and the stop of the water discharge by closing the automatic valve 12 will be described.

運用中の定常監視状態にあっては、パイロット弁20及び手動起動弁22の両方が閉じており、自動弁12の弁体42はスプリング50の力で閉じられ、1次側にのみ給水配管からの加圧水が加わっている。この状態で自動弁12に対応した区画で火災が発生したとすると、遠隔制御によりパイロット弁20を開放する。もちろん、現場にいる場合には手動起動弁22を手動で開いてもよい。   In the steady monitoring state during operation, both the pilot valve 20 and the manual start valve 22 are closed, the valve body 42 of the automatic valve 12 is closed by the force of the spring 50, and only from the water supply pipe to the primary side. Of pressurized water is added. If a fire has occurred in the section corresponding to the automatic valve 12 in this state, the pilot valve 20 is opened by remote control. Of course, the manual activation valve 22 may be opened manually when in the field.

パイロット弁20を開くと、自動弁12の1次側に加わっている加圧水が止水弁18、パイロット弁20を介して圧力調整弁24の1次圧ポートP1に供給され、圧力調整弁24を通ってシリンダポートCLから自動弁12のシリンダ室46aに供給され、ピストン44がスプリング50に抗して図示下側にストロークし、弁体42を開き始める。弁体42が開くことで1次側の加圧水が2次側に流れ、図1に示したテスト用制水弁16を介して2次側配管から水噴霧ヘッドに供給されて消火用水の放水が開始される。   When the pilot valve 20 is opened, the pressurized water applied to the primary side of the automatic valve 12 is supplied to the primary pressure port P1 of the pressure regulating valve 24 via the stop valve 18 and the pilot valve 20, and the pressure regulating valve 24 is Then, the cylinder 44 is supplied from the cylinder port CL to the cylinder chamber 46 a of the automatic valve 12, and the piston 44 strokes downward against the spring 50 to open the valve body 42. When the valve body 42 is opened, the primary pressurized water flows to the secondary side, and is supplied to the water spray head from the secondary side pipe via the test water control valve 16 shown in FIG. Be started.

自動弁12を開いて2次側に加圧水が流れると、圧力調整弁24の2次圧ポートP2及びパイロットポートPLのそれぞれに2次側加圧水が供給され、自動弁12の2次圧が加わる。   When the automatic valve 12 is opened and pressurized water flows to the secondary side, the secondary side pressurized water is supplied to each of the secondary pressure port P2 and the pilot port PL of the pressure regulating valve 24, and the secondary pressure of the automatic valve 12 is applied.

パイロットポートPLに加わる自動弁12の2次圧による力が、圧力設定スプリング50で決まる規定放水圧力より低い間は、ピストン44によって弁体42が開き続け、これによって自動弁12の2次側圧力が規定方水圧力に向かって上昇する。2次側圧力が上昇すると、第2弁体58を流れる連通量が初期状態より多くなる。   While the force due to the secondary pressure of the automatic valve 12 applied to the pilot port PL is lower than the specified water discharge pressure determined by the pressure setting spring 50, the valve body 42 continues to be opened by the piston 44, whereby the secondary pressure of the automatic valve 12 is increased. Rises toward the specified water pressure. When the secondary pressure increases, the amount of communication flowing through the second valve body 58 becomes larger than in the initial state.

次に自動弁12が開いた水噴霧ヘッドからの放水状態で、自動弁12の2次側圧力が圧力設定スプリング54で決まる規定放水圧力より高くなると、圧力調整弁24はそれまでの下側の位置から上側の位置に切り替わる。   Next, when the secondary side pressure of the automatic valve 12 becomes higher than the specified water discharge pressure determined by the pressure setting spring 54 in the state of water discharge from the water spray head in which the automatic valve 12 is opened, the pressure adjustment valve 24 is moved to the lower side until then. Switch from position to upper position.

圧力調整弁24が上側の位置に切り替わると、1次圧ポートP1がシリンダポートCLから切り離され、シリンダポートCLが2次圧ポートP2に完全に連通する。このため、シリンダ室46aの1次圧となっていた加圧水は、そのときの自動弁12の低い方の2次圧との差圧により圧力調整弁24の第2弁体58及び閉鎖遅延弁56を通って自動弁12の2次側に流れ、これによってシリンダ室46aの圧力が低下する。   When the pressure regulating valve 24 is switched to the upper position, the primary pressure port P1 is disconnected from the cylinder port CL, and the cylinder port CL is completely communicated with the secondary pressure port P2. For this reason, the pressurized water that has been the primary pressure in the cylinder chamber 46a is caused by the pressure difference between the lower secondary pressure of the automatic valve 12 and the second valve body 58 and the closing delay valve 56 of the pressure regulating valve 24. And flows to the secondary side of the automatic valve 12, thereby reducing the pressure in the cylinder chamber 46a.

シリンダ室46aの圧力が低下すると、スプリング50の力を受けてピストン44が弁体42を閉じる図示下方にストロークし、弁体42の開度が少なくすることで、2次圧が規定放水圧力に下げられる。   When the pressure in the cylinder chamber 46a decreases, the piston 44 strokes downward in the figure to receive the force of the spring 50 and closes the valve body 42, and the opening of the valve body 42 is reduced, so that the secondary pressure becomes the specified water discharge pressure. Be lowered.

以下同様に、圧力調整弁24の圧力設定スプリング54のスプリング荷重で決まる規定放水圧力に対するパイロットポートPLに加わる2次圧による力の大小関係に応じた弁切替えにより、自動弁駆動部14は2次圧を規定放水圧力に保つように弁体42を開閉動作し、これによって2次側の水噴霧ヘッドに供給される加圧用水が規定放水圧力に調整される。   In the same manner, the automatic valve drive unit 14 is changed to a secondary state by switching the valve according to the magnitude relationship of the force due to the secondary pressure applied to the pilot port PL with respect to the specified discharge pressure determined by the spring load of the pressure setting spring 54 of the pressure adjusting valve 24. The valve body 42 is opened and closed so as to maintain the pressure at the specified water discharge pressure, whereby the pressurizing water supplied to the secondary water spray head is adjusted to the specified water discharge pressure.

水噴霧ヘッドからの放水による火災の鎮火を確認したら、パイロット弁20を閉鎖する。パイロット弁20を閉鎖すると圧力調整弁24の1次圧ポートP1に対する1次側加圧水の供給が断たれ、このとき圧力調整弁24は上側の切替位置にあるが、パイロットポートPLの圧力がかかっているので、シリンダポートCLと2次圧ポートP2の連通による流通量は初期状態よりも多い。   When it is confirmed that the fire has been extinguished due to water discharge from the water spray head, the pilot valve 20 is closed. When the pilot valve 20 is closed, the supply of the primary pressurized water to the primary pressure port P1 of the pressure adjustment valve 24 is cut off. At this time, the pressure adjustment valve 24 is in the upper switching position, but the pressure of the pilot port PL is applied. Therefore, the amount of flow due to the communication between the cylinder port CL and the secondary pressure port P2 is larger than that in the initial state.

さらに、シリンダポートCLと2次圧ポートP2の間は閉鎖遅延弁56のバイパス流路で連通されている。このため、シリンダ室46aの1次圧にある加圧水は、圧力調整弁24の第2弁体58の絞り流量と閉鎖遅延弁56で決まる絞り流量の総流量で自動弁12の2次側に流れ、シリンダ室46aの圧力が低下する。   Further, the cylinder port CL and the secondary pressure port P2 are communicated with each other by a bypass flow path of the closing delay valve 56. For this reason, the pressurized water at the primary pressure in the cylinder chamber 46 a flows to the secondary side of the automatic valve 12 with the total flow rate of the throttle flow rate determined by the second valve body 58 of the pressure regulating valve 24 and the closing delay valve 56. The pressure in the cylinder chamber 46a decreases.

このシリンダ室46aの圧力の低下に伴い、ピストン44が弁体42を閉じる方向に完全に閉まる間際まで早くストロークし、その後、弁体42が完全に閉まる間際では、パイロット圧力PLの圧力の低下により第2弁体58が初期状態のほぼ閉じた状態となり、閉鎖遅延弁56の流量のみとなり、弁体42が緩やかに閉じる方向にストロークし、衝撃を起こすことなく閉鎖し、再び1次側に加圧水が充満された初期状態に復旧する。   As the pressure in the cylinder chamber 46a decreases, the piston 44 strokes quickly until it is completely closed in the direction to close the valve body 42, and then, immediately after the valve body 42 is completely closed, the pressure of the pilot pressure PL decreases. The second valve body 58 is in a substantially closed state in the initial state, and only the flow rate of the closing delay valve 56 is obtained. The valve body 42 strokes gently in the closing direction, closes without causing an impact, and is again pressurized to the primary side. It will be restored to the initial state where is filled.

(自動排水弁の構成)
自動排水弁26は、パイロット弁20又は手動起動弁22を閉鎖して自動弁12の放水停止により2次側加圧水の圧力が所定の排水開放圧以下に低下した場合に開放し、パイロット弁20、手動起動弁22、圧力調整弁24及び自動弁駆動部14を含む自動弁駆動制御系内に充水された加圧水を排水する。
(Configuration of automatic drain valve)
The automatic drain valve 26 is opened when the pilot valve 20 or the manual activation valve 22 is closed and the pressure of the secondary pressurized water drops below a predetermined drainage release pressure due to stoppage of the automatic valve 12, and the pilot valve 20, The pressurized water filled in the automatic valve drive control system including the manual start valve 22, the pressure adjustment valve 24, and the automatic valve drive unit 14 is drained.

自動排水弁26は図3のシンボル表現に示すように、スプリングにより開位置にボール弁体を保持したチャッキ弁(逆止弁)であり、自動弁駆動制御系に充水された加圧水の水圧によりボール弁体に加わる力がスプリング荷重で決まる所定の排水開放圧を超えると閉鎖し、一方、自動弁駆動制御系に充水された加圧水の水圧によりボール弁体に加わる力が排水開放圧以下に低下すると開放して排水する。   As shown in the symbol representation of FIG. 3, the automatic drain valve 26 is a check valve (check valve) that holds a ball valve body in an open position by a spring, and is controlled by the pressure of pressurized water charged in the automatic valve drive control system. When the force applied to the ball valve body exceeds a predetermined drainage release pressure determined by the spring load, the ball valve body closes.On the other hand, the force applied to the ball valve body by the water pressure of the pressurized water charged in the automatic valve drive control system falls below the drainage release pressure. When it drops, it opens and drains.

(吸気機構の構成)
吸気機構32は、自動弁12による放水停止に伴う加圧水の圧力低下で自
動排水弁26が開いて排水を始めた場合に、例えば吸気口を開く操作を行うことで、開放した吸気口から大気を吸入して、自動排水弁26からの排水を助長する。
(Configuration of intake mechanism)
When the automatic drain valve 26 is opened due to the pressure drop of the pressurized water accompanying the stoppage of water discharge by the automatic valve 12, the intake mechanism 32 opens the intake port, for example, by opening the intake port. Inhalation facilitates drainage from the automatic drain valve 26.

図2及び図3の実施形態にあっては、手動起動弁22を並列接続したパイロット弁22と圧力調整弁24を連結する配管部分に吸気機構32を設けている。具体的には図1に示すように、吸気機構32は、自動弁12の上部に配置しているテスト用制水弁16の下側に近い位置に設けており、この吸気機構32の配置位置は、自動弁駆動制御系に含まれるパイロット弁20、手動起動弁22、圧力調整弁24、自動弁駆動部14及び圧力スイッチ30の配置位置に対し高い位置としている。   In the embodiment of FIGS. 2 and 3, the intake mechanism 32 is provided in a pipe portion connecting the pilot valve 22 and the pressure regulating valve 24, which are connected in parallel with the manual start valve 22. Specifically, as shown in FIG. 1, the intake mechanism 32 is provided at a position close to the lower side of the test water control valve 16 disposed above the automatic valve 12. Are higher than the arrangement positions of the pilot valve 20, the manual start valve 22, the pressure adjustment valve 24, the automatic valve drive unit 14 and the pressure switch 30 included in the automatic valve drive control system.

このように自動弁駆動制御系に充水している加圧水の滞留位置よりも高い位置に吸気機構32を設けて大気を吸入することで、吸気機構32より低い位置に滞留している残水を、自動開放した自動排水弁26から短い時間で十分に排水することができる。   Thus, by providing the intake mechanism 32 at a position higher than the stay position of the pressurized water filling the automatic valve drive control system and sucking the atmosphere, the remaining water staying at a position lower than the intake mechanism 32 is removed. The automatic drain valve 26 that is automatically opened can be sufficiently drained in a short time.

自動弁12による放水停止に伴い自動排水弁26が開放する排水状態で、図3にシンボル表現で示す圧力調整弁24は、図示の下側の切替位置に切り替わっており、吸気機構32の開放操作による大気の吸入に伴い、配管L1に滞留している加圧水は、圧力調整弁24の1次圧ポートP1から2次圧ポートP2を通り、更に配管L3から自動排水弁26を通って確実に排水できる。   In the drained state in which the automatic drain valve 26 opens due to the stop of water discharge by the automatic valve 12, the pressure adjustment valve 24 indicated by symbol representation in FIG. 3 is switched to the lower switching position in the drawing, and the opening operation of the intake mechanism 32 is performed. As the air is sucked in by the air, the pressurized water staying in the pipe L1 is surely drained from the primary pressure port P1 to the secondary pressure port P2 of the pressure regulating valve 24 and further from the pipe L3 through the automatic drain valve 26. it can.

一方、自動弁駆動部14のシリンダ室46a及び配管L2に滞留している加圧水は、吸気機構32からの直接的な大気の吸入は受けないが、配管L1及びL3の加圧水が大気の吸入で確実に排水されることに伴い、吸気機構32を設けて直接大気を吸入した場合に比べると時間はかかるが、十分に自動排水弁26から排水することが可能となる。   On the other hand, the pressurized water staying in the cylinder chamber 46a and the pipe L2 of the automatic valve driving unit 14 is not directly sucked into the atmosphere from the intake mechanism 32, but the pressurized water in the pipes L1 and L3 is surely received by the suction of the atmosphere. However, it takes time compared to the case where the intake mechanism 32 is provided and the air is directly sucked, but the automatic drain valve 26 can be sufficiently drained.

(吸気機構の構造)
図4は、図1〜図3の自動弁装置に設けたキャップ構造による吸気機構の実施形態を示した説明図である。
(Intake mechanism structure)
FIG. 4 is an explanatory view showing an embodiment of an intake mechanism having a cap structure provided in the automatic valve device of FIGS. 1 to 3.

図4に示すように、本実施形態の吸気機構32は、T継手を用いた本体60の下端を、図1から明らかなように、その下側に位置する手動起動弁22の2次側の配管に接続し、分岐端をバイロッット弁20の2次側と接続し、更に、本体60の上部に位置する外ネジを形成した吸気ヘッド62に、シートパッキン65を介してネジキャップ66を装着し、内部の吸気路64に至る上端の吸気口を閉鎖している。   As shown in FIG. 4, the intake mechanism 32 of the present embodiment has a lower end of the main body 60 using the T joint, as is clear from FIG. 1, on the secondary side of the manual start valve 22 positioned below the lower end. The pipe cap is connected, the branch end is connected to the secondary side of the bilot valve 20, and the screw cap 66 is attached to the intake head 62 formed with the external screw located at the upper part of the main body 60 through the seat packing 65. The upper intake port leading to the internal intake passage 64 is closed.

自動弁12による放水停止に伴い自動排水弁26が開放した場合には、吸気機構32のネジキャップ66を、工具を使用して緩めた後に手で回して取外すと、吸気路64が開放され、ここから大気を吸入することで、自動弁駆動制御系に滞留している加圧水の自動排水弁26からの排水を助長させ、自動弁駆動制御系の残水の排水を十分に行うことができる。   When the automatic drain valve 26 is opened due to the stop of water discharge by the automatic valve 12, when the screw cap 66 of the intake mechanism 32 is loosened by using a tool and then removed by hand, the intake passage 64 is opened. By sucking air from here, drainage from the automatic drain valve 26 of the pressurized water staying in the automatic valve drive control system can be facilitated, and the remaining water in the automatic valve drive control system can be sufficiently drained.

図5は吸気弁による吸気機構の実施形態を示した説明図である。図5に示すように、本実施形態の吸気機能32は、図4と同じT継手を用いた本体60の上端に、吸気弁68を取付けている。吸気弁68は吸気ヘッド70とハンドル72を備え、ハンドル70の操作で吸気ヘッド70の吸気口に連通する内部通路を開閉することができる。吸気弁68としては、図1に示した排気弁31と同じものを使用することができる。   FIG. 5 is an explanatory view showing an embodiment of an intake mechanism using an intake valve. As shown in FIG. 5, the intake function 32 of this embodiment has an intake valve 68 attached to the upper end of a main body 60 using the same T joint as in FIG. 4. The intake valve 68 includes an intake head 70 and a handle 72, and an internal passage communicating with an intake port of the intake head 70 can be opened and closed by operating the handle 70. As the intake valve 68, the same one as the exhaust valve 31 shown in FIG. 1 can be used.

このため自動弁12による放水停止に伴い自動排水弁26が開放した場合には、ハンドル76を開方向に回して吸気弁68を開き、吸気ヘッド70から大気を吸入することで、自動弁駆動制御系に滞留している加圧水の自動開放弁26からの排水を助長させ、自動弁駆動制御系の残水の排水を十分に行うことができる。また、ハンドル70の操作で開閉できることから、図4の実施形態に比べ、操作が容易になる。   For this reason, when the automatic drain valve 26 opens due to the stop of water discharge by the automatic valve 12, the automatic valve drive control is performed by opening the intake valve 68 by rotating the handle 76 in the opening direction and sucking air from the intake head 70. It is possible to facilitate drainage of the pressurized water staying in the system from the automatic opening valve 26 and sufficiently drain the remaining water of the automatic valve drive control system. Moreover, since it can be opened and closed by operating the handle 70, the operation becomes easier compared to the embodiment of FIG.

図6は自動吸気弁による吸気機構の実施形態を示した説明図であり、図6(A)に吸気機構の外観を示し、図6(B)に吸気機構をシンボル表現により示している。   FIG. 6 is an explanatory view showing an embodiment of an intake mechanism using an automatic intake valve. FIG. 6 (A) shows the appearance of the intake mechanism, and FIG. 6 (B) shows the intake mechanism by symbol expression.

図6に示すように、本実施形態の吸気機構32は、図4と同じT継手を用いた本体60の上端に、自動吸気弁74を取付けている。自動吸気弁74は、自動弁12の放水停止により2次側加圧水の圧力が所定の吸気開放圧以下に低下した場合に開放して大気を吸入する。   As shown in FIG. 6, the intake mechanism 32 of the present embodiment has an automatic intake valve 74 attached to the upper end of a main body 60 using the same T joint as in FIG. The automatic intake valve 74 opens and sucks air when the pressure of the secondary pressurized water drops below a predetermined intake opening pressure due to the stop of water discharge of the automatic valve 12.

自動吸気弁74は図6(B)のシンボル表現に示すように、スプリングにより開位置にボール弁体を保持したチャッキ弁(逆止弁)であり、自動弁駆動制御系に充水された加圧水の水圧によりボール弁体に加わる力がスプリング荷重で決まる所定の吸気開放圧を超えると閉鎖し、一方、自動弁駆動制御系に充水された加圧水の水圧によりボール弁体に加わる力が排水開放圧以下に低下すると開放して吸気する。このような自動吸気弁74としては、自動排水弁26と同じものを使用することができる。   The automatic intake valve 74 is a check valve (check valve) in which a ball valve body is held at an open position by a spring, as shown in the symbol representation of FIG. 6B, and pressurized water filled in the automatic valve drive control system. It closes when the force applied to the ball valve body by the water pressure exceeds a predetermined intake opening pressure determined by the spring load, while the force applied to the ball valve body by the water pressure of the pressurized water charged in the automatic valve drive control system opens the drainage When it drops below the pressure, it opens and inhales. As such an automatic intake valve 74, the same thing as the automatic drain valve 26 can be used.

このため自動弁12による放水停止に伴い自動排水弁26が開放した場合には、自動吸気弁74も開放して吸気口76から大気を吸入し、自動弁駆動制御系に滞留している加圧水の自動排水弁26からの排水を助長させ、自動弁駆動制御系の残水の排水を十分に行うことができる。また,図4及び図5の吸気機能のように、吸気のための操作を必要としないメリットがある。   For this reason, when the automatic drain valve 26 is opened due to the stoppage of water discharge by the automatic valve 12, the automatic intake valve 74 is also opened, the atmosphere is sucked from the intake port 76, and the pressurized water staying in the automatic valve drive control system is retained. The drainage from the automatic drain valve 26 is promoted, and the remaining water in the automatic valve drive control system can be sufficiently drained. Further, unlike the intake function of FIGS. 4 and 5, there is an advantage that an operation for intake is not required.

[自動弁装置の第2実施形態]
図7は本発明の自動弁装置の第2実施形態を示した説明図、図8は図7の自動弁装置を、機器シンボルを用いて示した説明図である。
[Second Embodiment of Automatic Valve Device]
FIG. 7 is an explanatory view showing a second embodiment of the automatic valve device of the present invention, and FIG. 8 is an explanatory view showing the automatic valve device of FIG. 7 using equipment symbols.

図7及び図8に示すように、本実施形態にあっては、吸気機構32を自動弁駆動部14に設けたことを特徴とする。自動弁駆動部14は、シリンダ室46aに連通する入出力ポート52を設けているが、更に、シリンダ室46aに連通する吸気ポート78を設け、吸気ポート78の外側に吸気機構32を設けている。吸気機構32としては、図4、図5又は図6に示した実施形態の何れかを使用することができる。   As shown in FIGS. 7 and 8, the present embodiment is characterized in that the intake mechanism 32 is provided in the automatic valve drive unit 14. The automatic valve drive unit 14 is provided with an input / output port 52 that communicates with the cylinder chamber 46 a, but further includes an intake port 78 that communicates with the cylinder chamber 46 a, and an intake mechanism 32 outside the intake port 78. . As the intake mechanism 32, any of the embodiments shown in FIGS. 4, 5, or 6 can be used.

なお、それ以外の構成は、図2及び図3の実施形態と同じであることから、同じ符号を付して説明は省略する。   Other configurations are the same as those in the embodiment of FIGS. 2 and 3, and thus the same reference numerals are given and description thereof is omitted.

自動弁12による放水停止に伴い自動排水弁26が開放する排水状態で、図8にシンボル表現で示す圧力調整弁24は、図示の下側の切替位置に切り替わっており、シリンダ室46aに連通する吸気ポート78に設けた吸入機構32の開放に伴う大気の吸入により、シリンダ室46a及び配管L1に滞留している加圧水は、圧力調整弁24のシリンダポートCLから2次圧ポートP2を通り、更に配管L3から自動排水弁26を通って確実に排水できる。   In a drained state in which the automatic drain valve 26 opens due to the stop of water discharge by the automatic valve 12, the pressure regulating valve 24 shown by symbol representation in FIG. 8 is switched to the lower switching position in the drawing and communicates with the cylinder chamber 46a. The pressurized water staying in the cylinder chamber 46a and the pipe L1 due to the suction of the air accompanying the opening of the suction mechanism 32 provided in the intake port 78 passes from the cylinder port CL of the pressure regulating valve 24 through the secondary pressure port P2, and further. Water can be reliably drained from the pipe L3 through the automatic drain valve 26.

一方、手動起動弁22を並列に接続したパイロット弁20の2次側の配管L1に滞留している加圧水は、自動弁駆動部14に設けた吸気機構32からの直接的な大気の吸入は受けないが、配管L2及びL3の加圧水が大気の吸入で確実に排水されることに伴い、吸気機構32を設けて大気を直接吸入した場合に比べると時間はかかるが、十分に自動排水弁26から排水することが可能となる。   On the other hand, the pressurized water staying in the pipe L1 on the secondary side of the pilot valve 20 to which the manual start valve 22 is connected in parallel receives direct intake of air from the intake mechanism 32 provided in the automatic valve drive unit 14. Although the pressure water in the pipes L2 and L3 is surely drained by the suction of the atmosphere, it takes more time than the case where the suction mechanism 32 is provided and the atmosphere is directly sucked. It becomes possible to drain.

[自動弁装置の第3実施形態]
図9は吸入機構を2箇所に設けた本発明による自動弁装置の第3実施形態を示した説明図である。図9に示すように、本実施形態にあっては、手動起動弁22を並列接続したパイロット弁20と圧力調整弁24を連結する配管部分に吸気機構32aを設け、また、自動弁駆動部14のシリンダ室46aに連通する吸気ポート78の外側に吸気機構32bを設けている。吸気機構32a,32bとしては、図4、図5又は図6に示した実施形態の何れかを使用することができる。
[Third embodiment of automatic valve device]
FIG. 9 is an explanatory view showing a third embodiment of the automatic valve device according to the present invention provided with two suction mechanisms. As shown in FIG. 9, in the present embodiment, an intake mechanism 32 a is provided in a pipe portion that connects the pilot valve 20 and the pressure regulating valve 24, in which the manual start valve 22 is connected in parallel, and the automatic valve driving unit 14. An intake mechanism 32b is provided outside an intake port 78 communicating with the cylinder chamber 46a. As the intake mechanisms 32a and 32b, any of the embodiments shown in FIG. 4, FIG. 5, or FIG. 6 can be used.

自動弁12による放水停止に伴い自動排水弁26が開放する排水状態で、図3にシンボル表現で示す圧力調整弁24は、図示の下側の切替位置に切り替わっており、吸入機構32aの開放による大気の吸入に伴い、配管L1に滞留している加圧水は、圧力調整弁24の1次圧ポートP1から2次圧ポートP2を通り、更に配管L3から自動排水弁26を通って確実に排水できる。   In the drained state where the automatic drain valve 26 opens due to the stop of water discharge by the automatic valve 12, the pressure regulating valve 24 shown by symbol representation in FIG. 3 is switched to the lower switching position shown in the figure, and the suction mechanism 32a is opened. As the air is sucked in, the pressurized water staying in the pipe L1 can be reliably drained from the primary pressure port P1 of the pressure regulating valve 24 through the secondary pressure port P2 and further from the pipe L3 through the automatic drain valve 26. .

また、シリンダ室46aに連通する吸気ポート78に設けた吸入機構32bの開放に伴う大気の吸入により、シリンダ室46a及び配管L1に滞留している加圧水は、圧力調整弁24のシリンダポートCLから2次圧ポートP2を通り、更に配管L3から自動排水弁26を通って確実に排水できる。   Further, the pressurized water staying in the cylinder chamber 46a and the pipe L1 due to the suction of the air accompanying the opening of the suction mechanism 32b provided in the intake port 78 communicating with the cylinder chamber 46a is 2 from the cylinder port CL of the pressure regulating valve 24. Through the secondary pressure port P2, the water can be reliably drained from the pipe L3 through the automatic drain valve 26.

[本発明の変形例]
なお、吸気機構の構造は、上記の実施形態に限定されず、手動または自動で開放して吸気する適宜の構造を含む。
[Modification of the present invention]
Note that the structure of the intake mechanism is not limited to the above-described embodiment, and includes an appropriate structure that opens manually or automatically to intake air.

また、吸気機構を設ける自動弁駆動制御系の位置は、上記の実施形態に限定されず、自動弁駆動制御系内に充水している加圧水の滞留位置に対し高い位置となる適宜の場所に配置すれば良い。   Further, the position of the automatic valve drive control system in which the intake mechanism is provided is not limited to the above-described embodiment, and is located at an appropriate position that is higher than the retention position of the pressurized water charged in the automatic valve drive control system. Just place it.

また、吸気機構を自動弁駆動部、圧力調整弁、パイロット弁及び手動起動弁の設置位置よりも低区なる所定の位置に設置しても、相応の排水を助長する効果を得られる。   Further, even if the intake mechanism is installed at a predetermined position lower than the installation positions of the automatic valve drive unit, the pressure adjustment valve, the pilot valve, and the manual start valve, the effect of promoting the corresponding drainage can be obtained.

また、圧力調整弁は、上記の実施形態に限定されず、自動弁による放水を停止した場合の切替位置で、圧力調整弁の1次圧ポート及びシリンダポート側に滞留している加圧水を、2次圧ポート側に連通して自動排水弁から排出可能なものであれば、適宜の構造の圧力調整弁を含む。   Further, the pressure regulating valve is not limited to the above-described embodiment, and the pressurized water staying on the primary pressure port and cylinder port side of the pressure regulating valve is changed to 2 when the water discharge by the automatic valve is stopped. A pressure regulating valve having an appropriate structure is included as long as it can communicate with the next pressure port side and discharge from the automatic drain valve.

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 without impairing the object 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:自動弁駆動部
16:テスト用制水弁
18:止水弁
20:パイロット弁
22:手動起動弁
24:圧力調整弁
26:自動排水弁
28:手動排水弁
30:圧力スイッチ
31:排気弁
32,32a,32b:吸気機構
34:弁本体
42:弁体
44:ピストン
46:シリンダ
46a:シリンダ室
50:スプリング
52:入出力ポート
56:閉鎖遅延弁
58:第2弁体
60:本体
62,70:吸気ヘッド
64:吸気路
65:シートパッキン
66:ネジキャップ
68:吸気弁
74:自動吸気弁
76:吸気口
78:吸気ポート
10: Automatic valve device 12: Automatic valve 14: Automatic valve drive unit 16: Test water control valve 18: Stop valve 20: Pilot valve 22: Manual start valve 24: Pressure adjustment valve 26: Automatic drain valve 28: Manual drain Valve 30: Pressure switch 31: Exhaust valves 32, 32a, 32b: Intake mechanism 34: Valve body 42: Valve body 44: Piston 46: Cylinder 46a: Cylinder chamber 50: Spring 52: Input / output port 56: Closing delay valve 58: Second valve body 60: Main body 62, 70: Intake head 64: Intake passage 65: Seat packing 66: Screw cap 68: Intake valve 74: Automatic intake valve 76: Inlet port 78: Intake port

Claims (7)

ピストン・シリンダ機構を備えた自動弁駆動部による本体内部に設けた弁体の開放で、1次側から供給された加圧水を2次側の水噴霧ノズルへ供給して放水させると共に、前記自動弁駆動部による弁体の閉鎖で、前記水噴霧ノズルからの放水を停止させる自動弁と、
前記自動弁の2次側に配置され、定常時に開放され、テスト放水時に閉鎖されるテスト用制水弁と、
水噴霧又はテスト放水を行う場合に開放され、前記自動弁の1次圧側加圧水を前記弁体の開放圧として前記自動弁駆動部へ供給するパイロット弁と、
前記パイロット弁に並列に接続され、手動操作により開放されて前記自動弁の1次圧側加圧水を前記弁体の開放圧として前記自動弁駆動部へ供給する手動起動弁と、
前記パイロット弁又は手動起動弁の開放により供給された1次側加圧水の圧力を調整した調整圧を前記自動弁駆動部に供給して前記弁体の駆動により2次側加圧水の圧力を所定の放水圧に制御する圧力調整弁と、
前記パイロット弁又は手動起動弁を閉鎖して自動弁の放水停止により2次側加圧水の圧力が所定の排水開放圧以下に低下した場合に開放し、前記パイロット弁、手動起動弁、圧力調整弁及び自動弁駆動部を含む自動弁駆動制御系内に充水された加圧水を排水する自動排水弁と、
を備えた自動弁装置に於いて、
前記自動弁による放水を停止した場合に大気を吸入して、前記自動弁駆動制御系内に充水された加圧水の前記自動排水弁からの排水を助長する吸気機構を設けたことを特徴とする自動弁装置。
When the valve body provided inside the main body is opened by an automatic valve drive unit having a piston / cylinder mechanism, the pressurized water supplied from the primary side is supplied to the water spray nozzle on the secondary side to discharge the water, and the automatic valve An automatic valve for stopping water discharge from the water spray nozzle by closing the valve body by the driving unit;
A test water control valve which is disposed on the secondary side of the automatic valve, is opened at a steady state, and is closed at a test water discharge;
A pilot valve that is opened when water spraying or test water discharge is performed, and supplies primary pressure side pressurized water of the automatic valve to the automatic valve drive unit as an opening pressure of the valve body;
A manual start valve connected in parallel to the pilot valve and opened by manual operation to supply the primary pressure side pressurized water of the automatic valve to the automatic valve drive unit as an opening pressure of the valve body;
An adjusted pressure obtained by adjusting the pressure of the primary side pressurized water supplied by opening the pilot valve or the manual start valve is supplied to the automatic valve driving unit, and the pressure of the secondary side pressurized water is released by driving the valve body. A pressure control valve that controls the water pressure,
The pilot valve or the manual start valve is closed and opened when the pressure of the secondary pressurized water drops below a predetermined drainage release pressure due to the stoppage of the automatic valve, and the pilot valve, the manual start valve, the pressure adjustment valve, An automatic drain valve for draining pressurized water filled in an automatic valve drive control system including an automatic valve drive unit;
In an automatic valve device equipped with
An air intake mechanism is provided that sucks in air when water discharge by the automatic valve is stopped and promotes drainage of pressurized water filled in the automatic valve drive control system from the automatic drain valve. Automatic valve device.
請求項1記載の自動弁装置に於いて、前記吸気機構は、前記自動弁駆動部、圧力調整弁、パイロット弁及び手動起動弁の設置位置に対し高くなる所定位置に設け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 intake mechanism is provided at a predetermined position that is higher than the installation positions of the automatic valve driving unit, the pressure adjusting valve, the pilot valve, and the manual start valve. Automatic valve device.
請求項1記載の自動弁装置に於いて、前記吸気機構を、前記パイロット弁及び手動起動弁の2次側配管部分に設け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 intake mechanism is provided in a secondary side piping portion of the pilot valve and the manual start valve.
請求項1記載の自動弁装置に於いて、前記吸気機構を、前記自動弁の駆動部に設け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 intake mechanism is provided in a drive portion of the automatic valve.
請求項1記載の自動弁装置に於いて、前記吸気機構を、前記パイロット弁及び手動起動弁の2次側配管部分岐及び前記自動弁の駆動部の各々に設け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 intake mechanism is provided in each of a secondary side piping section branch of the pilot valve and a manual start valve and a driving section of the automatic valve. apparatus.
請求項4又は5記載の自動弁装置に於いて、
前記自動弁駆動部は、
前記弁体に連結したピストンと、
前記ピストンを摺動自在に設けたシリンダと、
前記ピストンを前記弁体の閉鎖方向に付勢するスプリングと、
前記ピストンで仕切られた一方のシリンダ室に対する加圧水の供給により前記ピストンを弁開方向にストロークさせると共に前記加圧水の排水により前記ピストンを弁閉方向にストロークさせる加圧水入出力ポートと、
を備え、
前記吸気機構は、前記一方のシリンダ室に連通する吸気ポートに設けたことを特徴とする自動弁装置。
In the automatic valve device according to claim 4 or 5,
The automatic valve drive unit is
A piston connected to the valve body;
A cylinder slidably provided with the piston;
A spring for urging the piston in the closing direction of the valve body;
A pressurized water input / output port that causes the piston to stroke in the valve opening direction by supplying pressurized water to one cylinder chamber partitioned by the piston, and causes the piston to stroke in the valve closing direction by draining the pressurized water;
With
The automatic valve device, wherein the intake mechanism is provided in an intake port communicating with the one cylinder chamber.
請求項1乃至6のいずれかに記載の自動弁装置に於いて、前記吸気機構は、キャップ部材の着脱により吸気口を開閉するキャップ構造、開閉操作により吸気口を開閉する吸気弁、または、充水した加圧水の圧力が前記自動排水弁の排水開放圧以下に低下した場合に開放して吸気口を開く自動吸気弁としたことを特徴とする自動弁装置。   7. The automatic valve device according to claim 1, wherein the intake mechanism includes a cap structure that opens and closes an intake port by attaching and detaching a cap member, an intake valve that opens and closes an intake port by opening and closing operation, or a charging mechanism. An automatic valve device that is an automatic intake valve that opens when the pressure of the pressurized pressurized water drops below the drain opening pressure of the automatic drain valve and opens the intake port.
JP2012256953A 2012-11-23 2012-11-23 Automatic valve device Pending JP2014104004A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111365070A (en) * 2020-03-30 2020-07-03 中铁二院工程集团有限责任公司 Tunnel drain pipe crystallization prevention system and prevention method

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Publication number Priority date Publication date Assignee Title
JPS6328968U (en) * 1986-08-08 1988-02-25
JPH0397160U (en) * 1990-01-22 1991-10-04
JP2001108140A (en) * 1999-10-07 2001-04-20 Nohmi Bosai Ltd Automatic valve
JP2011024793A (en) * 2009-07-27 2011-02-10 Hochiki Corp Flowing water detector
JP2012040064A (en) * 2010-08-16 2012-03-01 Hochiki Corp Automatic valve system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6328968U (en) * 1986-08-08 1988-02-25
JPH0397160U (en) * 1990-01-22 1991-10-04
JP2001108140A (en) * 1999-10-07 2001-04-20 Nohmi Bosai Ltd Automatic valve
JP2011024793A (en) * 2009-07-27 2011-02-10 Hochiki Corp Flowing water detector
JP2012040064A (en) * 2010-08-16 2012-03-01 Hochiki Corp Automatic valve system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111365070A (en) * 2020-03-30 2020-07-03 中铁二院工程集团有限责任公司 Tunnel drain pipe crystallization prevention system and prevention method
CN111365070B (en) * 2020-03-30 2024-04-19 中铁二院工程集团有限责任公司 Tunnel drain pipe crystallization prevention and control system and prevention and control method

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