JP6462346B2 - Motorized valve - Google Patents

Motorized valve Download PDF

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JP6462346B2
JP6462346B2 JP2014248025A JP2014248025A JP6462346B2 JP 6462346 B2 JP6462346 B2 JP 6462346B2 JP 2014248025 A JP2014248025 A JP 2014248025A JP 2014248025 A JP2014248025 A JP 2014248025A JP 6462346 B2 JP6462346 B2 JP 6462346B2
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motor
operated valve
relay
control circuit
valve
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JP2016109223A (en
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金高　浩春
浩春 金高
丈二 田中
丈二 田中
均 松永
均 松永
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株式会社カワデン
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Description

この発明は、緊急時の対処能力を向上させた電動弁に関するものである。   The present invention relates to a motor-operated valve with improved emergency response capability.

地震に備えた電動弁として、例えば、図７に示す特許文献１に記載の感震装置７を備えたものがある。この電動弁１は、飲料水の流失防止用のために、配水池・調整池２の流出管３と配水本管４の間に設けられたもので、電動弁１は制御盤５と接続する構成となっている。そして、その制御盤側に、外部電源（ＡＣ）６と感震装置７を配置する構成となっており、感震装置７と制御盤５と電動弁１はケーブル（電力、信号）８、８´で電気的に連結して、遠隔制御するようになっている。
さらに、制御盤５にバックアップ用バッテリー９として蓄電池を内蔵し、その内蔵バッテリー９に外部電源６を使って充電を行うことで、停電時においてもバックアップ用バッテリー９を使用して、感震装置７の出力に基づき電動弁１を制御する構成になっている。 As an electric valve prepared for an earthquake, for example, there is one equipped with a seismic sensing device 7 described in Patent Document 1 shown in FIG. The motor-operated valve 1 is provided between the outflow pipe 3 of the distribution / regulatory pond 2 and the main water distribution pipe 4 for preventing drinking water from being lost. The motor-operated valve 1 is connected to the control panel 5. It has a configuration. An external power source (AC) 6 and a seismic device 7 are arranged on the control panel side, and the seismic device 7, the control panel 5 and the motor-operated valve 1 are connected to cables (power, signal) 8, 8. It is electrically connected with a 'and is remotely controlled.
Further, a storage battery is built in the control panel 5 as a backup battery 9, and the built-in battery 9 is charged by using an external power source 6, so that the backup battery 9 is used even in the event of a power failure, and the seismic device 7 The motor-operated valve 1 is controlled based on the output of.

特開平８−４９２４号公報JP-A-8-4924

しかしながら、上記のバッテリーを制御盤側に配置する方法では、制御盤と電動弁を接続するケーブルが地震の際に断線、例えば、電力用のケーブルが断線すると、たとえ信号用のケーブルが生存していたとしても、電源喪失により電動弁を制御できなくなる。
また、感震装置と電動弁を接続する信号用のケーブルが断線した場合は、信号が途切れてしまうため、挙動が不安定になる問題がある。 However, in the above-described method of arranging the battery on the control panel side, if the cable connecting the control panel and the motor-operated valve is disconnected in the event of an earthquake, for example, the power cable is disconnected, the signal cable remains alive. Even if the power supply is lost, the motorized valve cannot be controlled.
In addition, when the signal cable connecting the seismic device and the motor-operated valve is disconnected, there is a problem that the behavior becomes unstable because the signal is interrupted.

そこで、この発明の課題は、制御盤と電動弁を接続するケーブルが断線しても電動弁を制御できるようにすることである。そして、挙動が不安定にならないようにすることである。   Accordingly, an object of the present invention is to enable control of a motor-operated valve even if a cable connecting the control panel and the motor-operated valve is disconnected. And it is to prevent the behavior from becoming unstable.

上記の課題を解決するため、この発明では、制御盤と電動弁をケーブルで接続し、制御盤側に、感震装置、バックアップ用バッテリーを備え、停電時にバックアップ用バッテリーの電力を使用し感震装置の出力に基づいて電動弁を遠隔制御する電動弁において、前記バックアップ用バッテリーを制御盤側に替えて電動弁側に配置するとともに、停電検出回路を設け、前記停電検出回路が停電を検出すると、バックアップ用バッテリーの電力で電動弁を制御するという構成を採用したのである。   In order to solve the above problems, in the present invention, a control panel and a motor-operated valve are connected with a cable, and a seismic device and a backup battery are provided on the control panel side. In the motorized valve that remotely controls the motorized valve based on the output of the device, the backup battery is arranged on the motorized valve side instead of the control panel side, a power failure detection circuit is provided, and the power failure detection circuit detects a power failure Therefore, a configuration in which the motor-operated valve is controlled by the power of the backup battery is adopted.

このような構成を採用することにより、電動弁側にバックアップ用バッテリーを配置したことで、地震の際にケーブルが断線しても前記バッテリーから電動弁へ電力を供給できる。このため、停電を検出すると、例えば閉弁動作を行うように設定しておけば、電動弁を制御することができる。   By adopting such a configuration, the backup battery is disposed on the motor-operated valve side, so that power can be supplied from the battery to the motor-operated valve even if the cable is disconnected in the event of an earthquake. For this reason, when a power failure is detected, the motor-operated valve can be controlled if, for example, the valve closing operation is set.

また、このとき、上記電動弁側に、ケーブルの断線で、電動弁を安全な開度に制御する制御回路を作動するスイッチ手段を備えた構成を採用することができる。   Further, at this time, it is possible to employ a configuration in which switch means for operating a control circuit for controlling the motor-operated valve to a safe opening degree by disconnection of the cable is provided on the motor-operated valve side.

このような構成を採用することにより、制御盤から制御用の信号が途絶えても、スイッチ手段が制御用回路を作動して電動弁の開度を安全な状態にたもつことができる。そのため、地震の際に、感震装置からの信号が入力しなくなった場合でも安全状態を維持できる。   By adopting such a configuration, even if the control signal is interrupted from the control panel, the switch means can operate the control circuit to keep the opening degree of the motor-operated valve in a safe state. Therefore, a safe state can be maintained even when a signal from the seismic device is not input during an earthquake.

また、このとき、上記スイッチ手段が感震装置の作動でオフするリレーであって、前記リレーのｂ接点の「閉」で制御回路を作動する構成を採用することができる。   Further, at this time, it is possible to adopt a configuration in which the switch means is a relay that is turned off by the operation of the seismic device, and the control circuit is operated by “closing” the b contact of the relay.

このような構成を採用することにより、感震装置が作動するとリレーはオフとなってｂ接点が閉じ制御回路が作動する。また、ケーブルが断線すると、断線によりリレーを作動する信号がオフとなり、リレーもオフとなってｂ接点が閉じる。そのため、制御回路が作動して挙動を安定させることができる。このようにケーブルの断線にも対処できる。   By adopting such a configuration, when the seismic device is activated, the relay is turned off, the b contact is closed, and the control circuit is activated. When the cable is disconnected, the signal for operating the relay is turned off by the disconnection, the relay is also turned off, and the contact b is closed. Therefore, the behavior can be stabilized by operating the control circuit. In this way, cable breakage can be dealt with.

また、このとき、上記制御回路に替えて、リレーのｂ接点を介してバックアップ用バッテリーと電動弁とを接続し、ｂ接点の「閉」で電動弁を遮断するようにした構成を採用することができる。   At this time, instead of the control circuit, a configuration is adopted in which the backup battery and the motor-operated valve are connected via the relay contact b, and the motor-operated valve is shut off when the contact b is closed. Can do.

このような構成を採用することにより、電動弁を直接遮断することができるので、簡単な構成で電動弁を制御して、挙動を安定させることができる。   By adopting such a configuration, the motor-operated valve can be shut off directly, so that the behavior can be stabilized by controlling the motor-operated valve with a simple configuration.

この発明は、上記のように構成したことにより、制御盤と電動弁を接続するケーブルが断線しても電動弁を制御し、かつ、挙動を安定させることができる。そのため、地震の際にも安全状態を保持できる。   Since the present invention is configured as described above, the motor-driven valve can be controlled and the behavior can be stabilized even if the cable connecting the control panel and the motor-operated valve is disconnected. Therefore, a safe state can be maintained even in the event of an earthquake.

実施形態の模式図Schematic diagram of the embodiment 感震装置の作用説明図Action explanatory diagram of seismic device トリクル充電の接続図Trickle charging connection diagram 実施形態の接続図Connection diagram of the embodiment 実施形態の接続図Connection diagram of the embodiment 実施例１の接続図Connection diagram of Example 1 従来例の作用説明図Action explanatory diagram of conventional example

以下、この発明を実施するための形態を図面に基づいて説明する。
この形態は、図１に示すように、制御盤１０と電動弁１１を接続したもので、制御盤側Ａに感震装置１２を備え、電動弁側Ｂにバックアップ用バッテリー１３とスイッチ手段１４及び制御回路１５を備えたもので、制御盤１０と電動弁１１の間に電力用ケーブル１６と信号用ケーブル１７を配置する構成になっている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
In this embodiment, as shown in FIG. 1, a control panel 10 and a motor-operated valve 11 are connected, and a seismic device 12 is provided on the control panel side A, a backup battery 13 and a switch means 14 on the motor-operated valve side B A control circuit 15 is provided, and a power cable 16 and a signal cable 17 are arranged between the control panel 10 and the motor-operated valve 11.

制御盤１０は、交流電源（外部電源）１８、遠隔操作用の制御スイッチや計器類等を備え付けたもので、電動弁１１と離れた建屋など操作環境の良好な場所に配置してある。   The control panel 10 is provided with an AC power source (external power source) 18, a remote control switch, instruments, and the like, and is disposed in a place with a good operating environment such as a building away from the motorized valve 11.

感震装置１２は、例えば、図２に示すような鋼球方式のもので、鋼球２０が、地震の際にボール受け２１から受け皿２２へ落下してマイクロスイッチ２３をオフ（開）にする。
この感震装置１２は、制御盤１０から離れた地震の観測に適した場所に設置する。また、設置した感震装置１２は、マイクロスイッチ２３の出力を、図１に示すように、ケーブル２４で中継点の制御盤１０まで配線して信号用ケーブル１７に接続する。 The seismic sensing device 12 is, for example, a steel ball type as shown in FIG. 2, and the steel ball 20 falls from the ball receiver 21 to the receiving tray 22 in the event of an earthquake to turn off (open) the microswitch 23. .
The seismic device 12 is installed at a location suitable for observing earthquakes away from the control panel 10. In addition, the installed seismic device 12 connects the output of the microswitch 23 to the signal board 17 by wiring to the control panel 10 at the relay point with the cable 24 as shown in FIG.

電動弁１１は、モータと出力軸３０を複数の歯車を介して接続し、出力軸３０の先端に弁体（ここでは、円盤状のゲートバルブ）３１を取り付けたもので、出力軸３０には、図示はしていないが、２個のカムが９０度の位相差で取り付けられ、そのカムに２個のマイクロスイッチを係合させて制御回路１５と接続し、弁体３１の全閉、全開状態を検出できるようになっている。
バックアップ用バッテリー１３は、充電式（キャパシタも含む）のもので、電力用ケーブル１６によって供給される外部電源１８により充電するようになっている。その方法は、例えば、図３のようなトリクル充電方式を用いることで、停電を検知した停電検出回路（図３ではリレー）３５により外部電源１８と切り替えられて電動弁側（電動弁１１、スイッチ手段１４、制御回路１５も含む）Ｂへ電力を供給する。
なお、ここでは、バックアップ用バッテリー１３に二次電池を用いたが、短期間や一回限りの使用などの場合であれば、一次電池を用いた軽便な構成を採用しても良い。 The motor-operated valve 11 includes a motor and an output shaft 30 connected via a plurality of gears, and a valve body (here, a disc-shaped gate valve) 31 attached to the tip of the output shaft 30. Although not shown, two cams are mounted with a phase difference of 90 degrees, and two microswitches are engaged with the cams and connected to the control circuit 15 so that the valve body 31 is fully closed and fully opened. The state can be detected.
The backup battery 13 is of a rechargeable type (including a capacitor) and is charged by an external power source 18 supplied by a power cable 16. For example, the trickle charging method as shown in FIG. 3 is used, and the power supply is switched to the external power source 18 by the power failure detection circuit (relay in FIG. (Including means 14 and control circuit 15).
Here, the secondary battery is used as the backup battery 13, but a simple configuration using the primary battery may be employed for short-term use or one-time use.

スイッチ手段１４は、この形態では、図４のように、リレーＲ１を用いており、前記リレーＲ１は、電源２９を直列に接続して、信号用ケーブル１７を介して感震装置１２のマイクロスイッチ２３の出力に接続されている。このように、電動弁側Ｂに電源２９を設けたのは、停電時にバックアップ用バッテリー１３から電力の供給を受けられるようにするためで、前記リレーＲ１は、停電時でも感震装置１２のマイクロスイッチ２３の開閉した電流でオン・オフできるようになっている。
また、前記リレーＲ１は、図５のように、ｂ接点Ｒ１−ｂがプルアップされた制御回路１５のリレー接点入力３６とグランド間に設けられていて、リレーＲ１の作動でｂ接点Ｒ１−ｂは開放されて「Ｈ」レベル信号が前記リレー接点入力３６に入力される。一方、リレーＲ１が作動しないときは、ｂ接点Ｒ１−ｂは閉じるため、前記接点入力３６には、「Ｌ」レベル信号が入力される。
制御回路１５は、前記リレー接点入力３６を有する電動弁１１の駆動回路を備えたもので、「Ｌ」レベル信号がリレー接点入力３６に入力すると、下流や上流に不都合が生じない安全な開度（電動弁１１の開度がどのような開度であっても）に制御する緊急動作へ移行する。例えば、この形態ではモータを作動して弁体３１を全閉する遮断動作を行う。 In this embodiment, the switch means 14 uses a relay R 1 as shown in FIG. 4. The relay R 1 is connected to a power source 29 in series, and the seismic device 12 is connected via a signal cable 17. The output of the micro switch 23 is connected. Thus, the power supply 29 is provided on the motor-operated valve side B in order to receive power from the backup battery 13 in the event of a power failure. The relay R 1 is used for the seismic device 12 even in the event of a power failure. The microswitch 23 can be turned on / off by the current opened and closed.
Further, as shown in FIG. 5, the relay R 1 is provided between the relay contact input 36 of the control circuit 15 with the b contact R 1 -b pulled up and the ground, and the b contact is activated by the operation of the relay R 1. R 1 -b is opened and an “H” level signal is input to the relay contact input 36. On the other hand, when the relay R 1 is not activated, the b-contact R 1 -b is closed, so that the “L” level signal is input to the contact input 36.
The control circuit 15 includes a drive circuit for the motor-operated valve 11 having the relay contact input 36, and when the “L” level signal is input to the relay contact input 36, a safe opening degree that does not cause inconveniences downstream or upstream. The operation proceeds to the emergency operation to be controlled (whatever the opening degree of the motor-operated valve 11 is). For example, in this embodiment, a shut-off operation is performed in which the motor is operated to fully close the valve body 31.

信号用ケーブル１７は、感震装置１２からのマイクロスイッチ２３の出力、信号用スイッチ及び各種計器のセンサ用のケーブルなどで構成されている。一方、電力用ケーブル１６は、制御盤１０を介して電動弁側Ｂへ外部電源１８を供給するためのケーブルで、両ケーブル１６、１７は、各々コネクタを介して制御盤１０と電動弁１１に取り付けることで、設置が容易にできるようにしてある。
また、図４では、電動弁側Ｂに短絡用のスイッチ４０を設けてある。このスイッチ４０は、メンテナンスの際に信号用ケーブル１７を外せるようにするためのもので、信号用ケーブル１７を外す際にオンにする。こうすることで、信号用ケーブル１７を外しても、スイッチ手段１４のリレーＲ１ がオンのままとなり、制御回路１５が緊急動作を行わないようになる。 The signal cable 17 includes an output of the micro switch 23 from the seismic sensing device 12, a signal switch, and cables for sensors of various instruments. On the other hand, the power cable 16 is a cable for supplying the external power supply 18 to the motor-operated valve side B through the control panel 10, and both the cables 16 and 17 are respectively connected to the control panel 10 and the motor-operated valve 11 through connectors. By installing it, it can be installed easily.
In FIG. 4, a short-circuit switch 40 is provided on the electric valve side B. The switch 40 is for removing the signal cable 17 during maintenance, and is turned on when the signal cable 17 is removed. In this way, even disconnect the signal cable 17, the relay R 1 of the switch means 14 remains ON, the control circuit 15 is not performed emergency operation.

この形態は、上記のように構成され、例えば、地震が発生しで感震装置１２が作動すると、図４の感震装置１２のマイクロスイッチ２３の出力はオフ（「閉」）になるため、電動弁側Ａのスイッチ手段１４であるリレーＲ１がオフとなり、図５のリレーＲ１のｂ接点Ｒ１−ｂは閉になるため、制御回路１５のリレー接点入力３６は「Ｌ」になる。そのため、制御回路１５は緊急動作を行う。 This configuration is configured as described above. For example, when an earthquake occurs and the seismic sensing device 12 is activated, the output of the microswitch 23 of the seismic sensing device 12 in FIG. 4 is turned off (“closed”). relay R 1 is a switch means 14 of the electric valve side a is turned off, since the b contact R 1-b of the relay R 1 in FIG. 5 will be closed, the relay contact input 36 of control circuit 15 is "L" . Therefore, the control circuit 15 performs an emergency operation.

いま、地震発生時に停電が生じた場合は、図３の電動弁側Ｂの停電検出回路３５が作動して外部電源に替えて、バックアップ用バッテリー１３から電力が供給される。そのため、感震装置１２が作動した場合は、電動弁側Ｂのスイッチ手段１４であるリレーＲ１がオフになる。すると、リレーＲ１のｂ接点Ｒ１−ｂは閉になるため、制御回路１５のリレー接点入力３６は「Ｌ」になって制御回路１５は緊急遮断動作を行うことができる。
また、電力用ケーブル１６が断線を起こした場合は、電動弁側Ｂの停電検出回路３５が作動して外部電源に替えて、バックアップ用バッテリー１３から電力を供給する。そのため、感震装置１２が作動した場合は、電動弁側Ｂのスイッチ手段１４であるリレーＲ１がオフとなり、リレーＲ１のｂ接点Ｒ１−ｂは閉になって、制御回路１５のリレー接点入力３６は「Ｌ」になり、制御回路１５は緊急動作を行うことができる。
さらに、制御盤１０と電動弁１１を接続する信号用ケーブル１７が断線した場合は、図４の電動弁側Ｂのスイッチ手段１４であるリレーＲ１がオフとなり、リレーＲ１のｂ接点Ｒ１−ｂは閉になるため、制御回路のリレー接点入力３６は「Ｌ」になり、制御回路１５は緊急動作を行うことができる。 If a power failure occurs at the time of the earthquake, the power failure detection circuit 35 on the motor-operated valve side B in FIG. 3 is activated and the power is supplied from the backup battery 13 instead of the external power source. Therefore, when the seismic device 12 is activated, relay R 1 is a switch means 14 of the electric valve side B is turned off. Then, since the b contact R 1 -b of the relay R 1 is closed, the relay contact input 36 of the control circuit 15 becomes “L”, and the control circuit 15 can perform an emergency cutoff operation.
When the power cable 16 is disconnected, the power failure detection circuit 35 on the motor-operated valve side B is activated to supply power from the backup battery 13 instead of the external power source. Therefore, when the seismic device 12 is activated, relay R 1 is a switch means 14 of the electric valve side B is turned off, b contact R 1-b of the relay R 1 is in the closed, the control circuit 15 relay The contact input 36 becomes “L”, and the control circuit 15 can perform an emergency operation.
Further, when the signal cable 17 connecting the control board 10 and the electric valve 11 is broken, the relay R 1 is a switch means 14 of the electric valve side B of Figure 4 is turned off, b contact R 1 of the relay R 1 Since -b is closed, the relay contact input 36 of the control circuit becomes "L", and the control circuit 15 can perform an emergency operation.

このように、制御盤１０と電動弁１１を接続するケーブル１６、１７が断線しても電動弁１１を制御できる。そのため、地震の際、安全状態を維持できる。   Thus, even if the cables 16 and 17 connecting the control panel 10 and the motor operated valve 11 are disconnected, the motor operated valve 11 can be controlled. Therefore, it is possible to maintain a safe state in the event of an earthquake.

この実施例１は、電動弁側Ｂの制御回路１５に替えて、スイッチ手段１４で直接電動弁１１を制御する場合について述べる。
この場合、スイッチ手段１４であるリレーＲ１は、図６のように、ｂ接点Ｒ１−ｂを介してバックアップ用バッテリー１３と電動弁１１を接続する。そして、前記ｂ接点Ｒ１−ｂの閉で直接電動弁１１を作動して遮断させる。この場合、電動弁１１が遮断動作を行うようにバックアップ用バッテリー１３と電動弁１１の接続を構成しておくことは当然である。 In the first embodiment, a case in which the motor-operated valve 11 is directly controlled by the switch means 14 in place of the control circuit 15 on the motor-operated valve side B will be described.
In this case, the relay R 1 is a switch means 14, as shown in FIG. 6, connects the backup battery 13 and the electric valve 11 via the b-contact R 1-b. When the b contact R 1 -b is closed, the motor-operated valve 11 is directly operated to be shut off. In this case, it is natural to configure the connection between the backup battery 13 and the motor-operated valve 11 so that the motor-operated valve 11 performs the shut-off operation.

１０ 制御盤
１１ 電動弁
１２ 感震装置
１３ バックアップ用バッテリー
１４ スイッチ手段
１５ 制御回路
１６ 電力用ケーブル
１７ 信号用ケーブル
３５ 停電検出回路
３６ リレー接点入力
Ｒ１ リレー
Ｒ１−ｂ ｂ接点 10 Control panel
11 Motorized valve
12 Seismic device
13 Backup battery
14 Switch means
15 Control circuit
16 Power cable
17 Signal cable
35 Power failure detection circuit
36 Relay contact input
R1relay
R1-bb contact

Claims (3)

制御盤と電動弁をケーブルで接続し、制御盤側に、感震装置、バックアップ用バッテリーおよび制御回路を備え、停電時にバックアップ用バッテリーの電力を使用し感震装置の出力に基づいて電動弁を遠隔制御する電動弁において、
前記バックアップ用バッテリーおよび制御回路を制御盤側に替えて電動弁側に配置するとともに、停電検出回路を設け、前記停電検出回路が停電を検出すると、バックアップ用バッテリーの電力で制御回路が電動弁を安全な開度に制御することを特徴とする電動弁。 The control panel and motorized valve are connected with a cable, and the control panel is equipped with a seismic device, backup battery and control circuit . The power of the backup battery is used in the event of a power failure and the motorized valve is installed based on the output of the seismic device In the motorized valve for remote control
The backup battery and the control circuit are arranged on the motorized valve side instead of the control panel side, and a power failure detection circuit is provided. When the power failure detection circuit detects a power failure, the control circuit uses the power of the backup battery to control the motor operated valve. A motor-operated valve that is controlled to a safe opening . 上記電動弁側に、ケーブルの断線で、前記制御回路を作動するスイッチ手段を備えたことを特徴とする請求項１に記載の電動弁。 2. The motor-operated valve according to claim 1, further comprising switch means for operating the control circuit when a cable is disconnected on the motor-operated valve side. 上記スイッチ手段が感震装置の作動でオフするリレーであって、前記リレーのｂ接点の「閉」で制御回路を作動することを特徴とする請求項２に記載の電動弁。   3. The motor-operated valve according to claim 2, wherein the switch means is a relay that is turned off by the operation of the seismic device, and the control circuit is operated when the b contact of the relay is "closed".
JP2014248025A 2014-12-08 2014-12-08 Motorized valve Active JP6462346B2 (en)

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JPH04203686A (en) * 1990-11-30 1992-07-24 Kitz Corp Actuator for valve
JP2858392B2 (en) * 1994-06-20 1999-02-17 キミツ機工株式会社 Emergency shut-off valve
US5960807A (en) * 1998-05-05 1999-10-05 Reyman; Mark Vibration and flow actuated valve shutoff system
JP2001289343A (en) * 2000-04-05 2001-10-19 Hitachi Valve Ltd Emergency cutoff valve and emergency cutoff valve group
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JP2004245725A (en) * 2003-02-14 2004-09-02 Serendi:Kk Seism detector and shutoff valve device using the same

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