JP2016070642A - Valve opening/closing control device and gas supply facility equipment - Google Patents

Valve opening/closing control device and gas supply facility equipment Download PDF

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JP2016070642A
JP2016070642A JP2014203599A JP2014203599A JP2016070642A JP 2016070642 A JP2016070642 A JP 2016070642A JP 2014203599 A JP2014203599 A JP 2014203599A JP 2014203599 A JP2014203599 A JP 2014203599A JP 2016070642 A JP2016070642 A JP 2016070642A
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valve
local signal
opening
closing
valve opening
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JP6423676B2 (en
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祐希 天野
Yuuki Amano
祐希 天野
雄基 乗藤
Yuki Norito
雄基 乗藤
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Tokyo Gas Co Ltd
Azbil Corp
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Azbil Corp
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Abstract

PROBLEM TO BE SOLVED: To reduce possibility of a valve opening operation by a remote control under a situation that the valve should be kept in a closed state.SOLUTION: A valve opening/closing control device includes a remote operation command receiving portion 4 for receiving an operation command transmitted from a remote command center, a local signal receiving portion 5 for receiving a local signal output from a local device 3 in occurrence of abnormality, a closing operation portion 6 for keeping a valve 2 in a closed state when a valve closing operation command is received from the remote operation command portion 4, or the local signal is received from the local signal receiving portion 5, an opening operation portion 7 for keeping the valve 2 in an opened state when a valve opening command is received from the remote operation command receiving portion 4, and an opening operation propriety determining portion 8 for invalidating the valve opening operation by the valve opening operation command when the lapse of time from the valve closing operation based on the local signal is an opening operation invalidation time or less.SELECTED DRAWING: Figure 1

Description

本発明は、異常発生時にガス供給を停止可能なバルブを備えたガスガバナやガスメータ等のガス供給設備機器において、バルブの開閉を制御するバルブ開閉制御装置に関するものである。   The present invention relates to a valve opening / closing control device for controlling opening / closing of a valve in a gas supply equipment such as a gas governor or a gas meter having a valve capable of stopping gas supply when an abnormality occurs.

従来より、ガスの圧力を調整するガスガバナや需要家宅に設けられたガスメータのバルブを自動もしくは遠隔操作で閉状態にし、ガス供給を停止するシステムが知られている。図２の例では、中圧導管１００と低圧導管１０１との間に設けられたガスガバナ１０２のバルブ１０３を、例えば地震の発生時に自動もしくは供給指令センタ１０４からの遠隔操作で閉状態にし、需要家宅１０５に設けられたガスメータ１０６のバルブを自動で閉状態にするようにしている。   2. Description of the Related Art Conventionally, there is known a system in which a gas governor for adjusting a gas pressure or a gas meter valve provided in a customer's house is closed automatically or remotely to stop gas supply. In the example of FIG. 2, the valve 103 of the gas governor 102 provided between the medium pressure conduit 100 and the low pressure conduit 101 is closed automatically, for example, when an earthquake occurs, or by remote operation from the supply command center 104, The valve of the gas meter 106 provided in 105 is automatically closed.

図３はガスガバナ１０２のバルブ制御部分の構成を示すブロック図である。ガスガバナ１０２は、ガス導管に設けられたバルブ１０３と、供給指令センタ１０４と通信を行う無線端末１０７と、ガスガバナ１０２に設けられたローカル機器１０８と、バルブ１０３の開閉を制御するバルブ開閉制御装置１０９とを備えている。   FIG. 3 is a block diagram showing the configuration of the valve control portion of the gas governor 102. The gas governor 102 includes a valve 103 provided in the gas conduit, a wireless terminal 107 that communicates with the supply command center 104, a local device 108 provided in the gas governor 102, and a valve opening / closing control device 109 that controls opening and closing of the valve 103. And.

無線端末１０７は、供給指令センタ１０４から、バルブ１０３を閉状態にする遠隔操作コマンドを受信すると、この遠隔操作コマンドをバルブ開閉制御装置１０９に渡す。バルブ開閉制御装置１０９は、無線端末１０７からの遠隔操作コマンドを受信すると、バルブ１０３を閉状態にして低圧導管１０１へのガス供給を停止する。ローカル機器１０８は、例えば地震発生時等の異常発生時に、バルブ１０３を閉状態にするローカル信号を出力する。バルブ開閉制御装置１０９は、ローカル機器１０８からのローカル信号を受信すると、バルブ１０３を閉状態にする。
また、ガスメータ１０６は、例えば地震発生時やガス漏れ発生時にバルブを自動的に閉状態にして需要家宅１０５へのガス供給を停止する。 When the wireless terminal 107 receives a remote operation command for closing the valve 103 from the supply command center 104, the wireless terminal 107 passes the remote operation command to the valve opening / closing control device 109. When receiving the remote operation command from the wireless terminal 107, the valve opening / closing control device 109 closes the valve 103 and stops the gas supply to the low pressure conduit 101. The local device 108 outputs a local signal for closing the valve 103 when an abnormality occurs, for example, when an earthquake occurs. When receiving the local signal from the local device 108, the valve opening / closing control device 109 closes the valve 103.
Further, the gas meter 106 automatically closes the valve to stop the gas supply to the customer's house 105 when an earthquake or a gas leak occurs, for example.

図２に示したようなシステムにおいては、自動もしくは遠隔操作で閉状態にしたガスガバナ１０２やガスメータ１０６を遠隔操作で開状態にしたいという要請がある。例えば特許文献１に開示されたガスメータの遠隔復帰装置では、異常発生時に閉状態にしたガスメータを遠隔操作で開状態に復帰させる構成が提案されている。
図３に示したガスガバナ１０２の構成においても、供給指令センタ１０４から、バルブ１０３を開状態にする遠隔操作コマンドを送信すれば、バルブ開閉制御装置１０９を介してバルブ１０３を開状態にすることが可能である。 In the system as shown in FIG. 2, there is a demand for the gas governor 102 and the gas meter 106 that are automatically or remotely closed to be opened remotely. For example, in the gas meter remote return device disclosed in Patent Document 1, a configuration has been proposed in which a gas meter that is closed when an abnormality occurs is returned to an open state by remote control.
Also in the configuration of the gas governor 102 shown in FIG. 3, if a remote operation command for opening the valve 103 is transmitted from the supply command center 104, the valve 103 can be opened via the valve opening / closing control device 109. Is possible.

特開平８−１３６２９３号公報JP-A-8-136293

異常発生時にガス供給を停止可能なバルブを備えたガスガバナやガスメータにおいては、上記のように遠隔操作でバルブを開状態に復帰させることが技術的に可能であるが、閉状態のバルブを開状態に復帰させるために復旧（バルブ開）操作コマンドを送信してから実際にバルブが開状態になるまでの間に新たな地震が発生する可能性があった。また、ガスガバナやガスメータの状態に関する情報を通信機能で供給指令センタに送り、供給指令センタでガスガバナやガスメータの復旧可否判定を行うシステムがあるが、供給指令センタに送る情報がガスガバナやガスメータのリアルタイムな情報ではなく、最新の状況との間にずれが生じる場合があった。   In a gas governor or gas meter equipped with a valve that can stop gas supply when an abnormality occurs, it is technically possible to remotely return the valve to the open state as described above, but the closed valve is open. There was a possibility that a new earthquake would occur between the time when the recovery (valve open) operation command was sent to return to the period before the valve was actually opened. In addition, there is a system that sends information on the status of the gas governor or gas meter to the supply command center using the communication function, and the supply command center determines whether the gas governor or gas meter can be restored. In some cases, there was a discrepancy between the current situation and not the information.

したがって、従来のシステムでは、最新の状況に応じてローカル機器がローカル信号を出力してバルブを閉状態にした後に、古い情報を基に供給指令センタから復旧（バルブ開）操作コマンドが送信される可能性があり、地震発生時などバルブを閉状態に維持すべき状況においても、遠隔操作によってバルブの開操作が行われてしまう可能性があった。   Therefore, in the conventional system, after the local device outputs a local signal and closes the valve according to the latest situation, a restoration (valve open) operation command is transmitted from the supply command center based on the old information. Even in situations where the valve should be kept closed, such as in the event of an earthquake, the valve could be opened by remote control.

本発明は、上記課題を解決するためになされたもので、異常発生時にガス供給を停止可能なバルブを備えたガスガバナやガスメータ等のガス供給設備機器において、バルブを閉状態に維持すべき状況において遠隔操作によってバルブの開操作が行われる可能性を低減することができるバルブ開閉制御装置およびガス供給設備機器を提供することを目的とする。   The present invention has been made to solve the above problems, and in a gas supply equipment device such as a gas governor or a gas meter having a valve capable of stopping gas supply when an abnormality occurs, the valve should be maintained in a closed state. It is an object of the present invention to provide a valve opening / closing control device and gas supply equipment that can reduce the possibility of a valve opening operation being performed remotely.

本発明は、異常発生時にガス供給を停止可能なバルブを備えたガス供給設備機器において、前記バルブの開閉を制御するバルブ開閉制御装置であって、遠隔の指令センタから送信される操作コマンドを受信する遠隔操作コマンド受信手段と、異常発生時にローカル機器から出力されるローカル信号を受信するローカル信号受信手段と、前記遠隔操作コマンド受信手段からバルブ閉操作コマンドを受信するか、あるいは前記ローカル信号受信手段からローカル信号を受信したときに、前記バルブを閉状態にする閉操作手段と、前記遠隔操作コマンド受信手段からバルブ開操作コマンドを受信したときに、前記バルブを開状態にする開操作手段と、前記ローカル信号によるバルブ閉操作が行われたときからの経過時間が開操作無効時間以下の場合に、前記バルブ開操作コマンドによるバルブ開操作を無効とする開操作可否判定手段とを備えることを特徴とするものである。
また、本発明のバルブ開閉制御装置の１構成例は、さらに、外部からの指示に応じて前記開操作無効時間を設定可能な設定手段を備えることを特徴とするものである。
また、本発明のガス供給設備機器は、ガス導管の途中に設けられたバルブと、異常発生時にローカル信号を出力するローカル機器と、バルブ開閉制御装置とを備えることを特徴とするものである。
また、本発明のガス供給設備機器の１構成例において、前記ローカル機器は、地震発生時またはガス漏れ発生時に前記ローカル信号を出力することを特徴とするものである。 The present invention relates to a valve opening / closing control device for controlling the opening and closing of the valve in a gas supply equipment device having a valve capable of stopping gas supply when an abnormality occurs, and receives an operation command transmitted from a remote command center. Remote operation command receiving means, local signal receiving means for receiving a local signal output from a local device when an abnormality occurs, a valve closing operation command from the remote operation command receiving means, or the local signal receiving means Closing operation means for closing the valve when a local signal is received from, and opening operation means for opening the valve when receiving a valve opening operation command from the remote operation command receiving means; When the time elapsed since the valve was closed by the local signal is less than the opening invalid time And it is characterized in that it comprises an opening operation determination means for disabling the valve opening operation by the valve opening operation commands.
Further, one configuration example of the valve opening / closing control device of the present invention is characterized by further comprising setting means capable of setting the opening operation invalid time according to an instruction from the outside.
The gas supply equipment according to the present invention includes a valve provided in the middle of the gas conduit, a local device that outputs a local signal when an abnormality occurs, and a valve opening / closing control device.
In one configuration example of the gas supply equipment according to the present invention, the local device outputs the local signal when an earthquake occurs or a gas leak occurs.

本発明によれば、ローカル機器によるバルブの自動制御を優先し、ローカル信号によるバルブ閉操作が行われたときからの経過時間が開操作無効時間以下の場合は、バルブ開操作コマンドによるバルブ開操作を無効とするようにしたので、バルブを閉状態に維持すべき状況において遠隔操作によってバルブの開操作が行われる可能性を低減することができる。   According to the present invention, priority is given to automatic control of a valve by a local device, and when the elapsed time since the valve closing operation by the local signal is less than the opening operation invalid time, the valve opening operation by the valve opening operation command is performed. Therefore, it is possible to reduce the possibility that the valve is opened by remote control in a situation where the valve should be kept closed.

本発明の実施の形態に係るバルブ開閉制御装置の構成を示すブロック図である。It is a block diagram which shows the structure of the valve | bulb opening / closing control apparatus which concerns on embodiment of this invention. 従来のガス供給システムの１例を示す図である。It is a figure which shows one example of the conventional gas supply system. ガスガバナのバルブ制御部分の構成を示すブロック図である。It is a block diagram which shows the structure of the valve control part of a gas governor.

以下、本発明の実施の形態について図面を参照して説明する。図１は本発明の実施の形態に係るバルブ開閉制御装置の構成を示すブロック図である。バルブ開閉制御装置１は、遠隔操作コマンド受信部４と、ローカル信号受信部５と、閉操作部６と、開操作部７と、開操作可否判定部８と、設定部９とを備えている。
バルブ開閉制御装置１と、ガス導管（不図示）の途中に配置されるバルブ２と、ローカル機器３とは、例えばガスガバナやガスメータ等のガス供給設備機器に設けられる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a valve opening / closing control apparatus according to an embodiment of the present invention. The valve opening / closing control device 1 includes a remote operation command receiving unit 4, a local signal receiving unit 5, a closing operation unit 6, an opening operation unit 7, an opening operation availability determination unit 8, and a setting unit 9. .
The valve opening / closing control device 1, the valve 2 disposed in the middle of a gas conduit (not shown), and the local device 3 are provided in gas supply equipment such as a gas governor or a gas meter.

遠隔操作コマンド受信部４は、図示しない遠隔の指令センタから送信される遠隔操作コマンドを受信する。
ローカル信号受信部５は、ローカル機器３から出力されるローカル信号を受信する。ローカル機器３としては、例えば地震センサやガス漏れセンサがある。ローカル機器３は、例えば地震発生時やガス漏れ発生時等の異常発生時に、バルブ２を閉状態にするローカル信号を出力する。 The remote operation command receiving unit 4 receives a remote operation command transmitted from a remote command center (not shown).
The local signal receiving unit 5 receives a local signal output from the local device 3. Examples of the local device 3 include an earthquake sensor and a gas leak sensor. The local device 3 outputs a local signal for closing the valve 2 when an abnormality occurs such as an earthquake or a gas leak.

閉操作部６は、遠隔操作コマンド受信部４からバルブ２を閉状態にするバルブ閉操作コマンドを受信するか、あるいはローカル信号受信部５からローカル信号を受信すると、バルブ２を閉状態にする。これにより、バルブ２が設けられたガス導管へのガス供給が停止する。
開操作部７は、遠隔操作コマンド受信部４から開操作可否判定部８を介してバルブ開操作コマンドを受信したときに、バルブ２を開状態にする。 When the closing operation unit 6 receives a valve closing operation command for closing the valve 2 from the remote operation command receiving unit 4 or receives a local signal from the local signal receiving unit 5, the closing operation unit 6 closes the valve 2. Thereby, the gas supply to the gas conduit provided with the valve 2 is stopped.
The opening operation unit 7 opens the valve 2 when receiving a valve opening operation command from the remote operation command receiving unit 4 via the opening operation availability determination unit 8.

開操作可否判定部８は、遠隔操作コマンド受信部４からバルブ２を開状態にするバルブ開操作コマンドを受信すると、このバルブ開操作コマンドを開操作部７に出力するが、ローカル信号によるバルブ閉操作が行われたときからの経過時間が開操作無効時間以下の場合は、バルブ開操作コマンドによるバルブ開操作を無効とする。開操作可否判定部８には、タイマ１０が設けられており、ローカル信号受信部５からローカル信号が出力されたときからの経過時間を測定できるようになっている。   When receiving the valve opening operation command for opening the valve 2 from the remote operation command receiving unit 4, the opening operation propriety determination unit 8 outputs this valve opening operation command to the opening operation unit 7. When the elapsed time since the operation was performed is equal to or shorter than the opening operation invalid time, the valve opening operation by the valve opening operation command is invalidated. The opening operation propriety determination unit 8 is provided with a timer 10 so that an elapsed time from when the local signal is output from the local signal receiving unit 5 can be measured.

開操作可否判定部８は、ローカル信号受信部５からローカル信号が出力されていないか、あるいはローカル信号が出力されたときからの経過時間が開操作無効時間を超えている場合、遠隔操作コマンド受信部４からのバルブ開操作コマンドを開操作部７に出力し、ローカル信号が出力されたときからの経過時間が開操作無効時間以下の場合、バルブ開操作コマンドを開操作部７に出力しない。
設定部９は、開操作可否判定部８に対して、例えばオペレータの指示に応じて開操作無効時間を任意に設定できるようになっている。 When the local signal is not output from the local signal receiving unit 5 or the elapsed time from when the local signal is output exceeds the opening operation invalid time, the opening operation propriety determination unit 8 receives a remote operation command. When the valve opening operation command from the unit 4 is output to the opening operation unit 7 and the elapsed time from the output of the local signal is equal to or shorter than the opening operation invalid time, the valve opening operation command is not output to the opening operation unit 7.
The setting unit 9 can arbitrarily set an opening operation invalid time in accordance with, for example, an operator's instruction to the opening operation availability determination unit 8.

以上のように、本実施の形態では、ローカル機器３によるバルブ２の自動制御を優先し、ローカル信号によるバルブ閉操作が行われたときからの経過時間が開操作無効時間以下の場合は、バルブ開操作コマンドによるバルブ開操作を無効とするようにしたので、バルブを閉状態に維持すべき状況において遠隔操作によってバルブの開操作が行われる可能性を低減することができる。   As described above, in the present embodiment, priority is given to the automatic control of the valve 2 by the local device 3, and when the elapsed time since the valve closing operation by the local signal is less than or equal to the opening operation invalid time, Since the valve opening operation by the opening operation command is invalidated, it is possible to reduce the possibility that the valve opening operation is performed by remote operation in a situation where the valve should be kept closed.

本実施の形態で説明したバルブ開閉制御装置１は、例えばＣＰＵ（Central Processing Unit）、記憶装置およびインタフェースを備えたコンピュータとこれらのハードウェア資源を制御するプログラムによって実現することができる。ＣＰＵは、記憶装置に格納されたプログラムに従って本実施の形態で説明した処理を実行する。   The valve opening / closing control device 1 described in the present embodiment can be realized by, for example, a computer having a CPU (Central Processing Unit), a storage device, and an interface, and a program for controlling these hardware resources. The CPU executes the processing described in the present embodiment in accordance with a program stored in the storage device.

本発明は、ガスガバナやガスメータ等のガス供給設備機器に適用することができる。   The present invention can be applied to gas supply equipment such as a gas governor and a gas meter.

１…バルブ開閉制御装置、２…バルブ、３…ローカル機器、４…遠隔操作コマンド受信部、５…ローカル信号受信部、６…閉操作部、７…開操作部、８…開操作可否判定部、９…設定部、１０…タイマ。   DESCRIPTION OF SYMBOLS 1 ... Valve opening / closing control apparatus, 2 ... Valve, 3 ... Local apparatus, 4 ... Remote operation command receiving part, 5 ... Local signal receiving part, 6 ... Close operation part, 7 ... Open operation part, 8 ... Open operation availability judgment part , 9 ... setting unit, 10 ... timer.

Claims (4)

異常発生時にガス供給を停止可能なバルブを備えたガス供給設備機器において、前記バルブの開閉を制御するバルブ開閉制御装置であって、
遠隔の指令センタから送信される操作コマンドを受信する遠隔操作コマンド受信手段と、
異常発生時にローカル機器から出力されるローカル信号を受信するローカル信号受信手段と、
前記遠隔操作コマンド受信手段からバルブ閉操作コマンドを受信するか、あるいは前記ローカル信号受信手段からローカル信号を受信したときに、前記バルブを閉状態にする閉操作手段と、
前記遠隔操作コマンド受信手段からバルブ開操作コマンドを受信したときに、前記バルブを開状態にする開操作手段と、
前記ローカル信号によるバルブ閉操作が行われたときからの経過時間が開操作無効時間以下の場合に、前記バルブ開操作コマンドによるバルブ開操作を無効とする開操作可否判定手段とを備えることを特徴とするバルブ開閉制御装置。 In a gas supply equipment device having a valve capable of stopping gas supply when an abnormality occurs, a valve opening / closing control device for controlling opening and closing of the valve,
Remote operation command receiving means for receiving an operation command transmitted from a remote command center;
Local signal receiving means for receiving a local signal output from a local device when an abnormality occurs;
A closing operation means for receiving a valve closing operation command from the remote operation command receiving means, or for closing the valve when receiving a local signal from the local signal receiving means;
An opening operation means for opening the valve when receiving a valve opening operation command from the remote operation command receiving means;
An opening operation availability determination unit that invalidates the valve opening operation by the valve opening operation command when an elapsed time from when the valve closing operation by the local signal is performed is equal to or less than an opening operation invalid time. A valve opening and closing control device. 請求項１記載のバルブ開閉制御装置において、
さらに、外部からの指示に応じて前記開操作無効時間を設定可能な設定手段を備えることを特徴とするバルブ開閉制御装置。 In the valve opening and closing control device according to claim 1,
Further, the valve opening / closing control device further comprises setting means capable of setting the opening operation invalid time according to an instruction from the outside. ガス導管の途中に設けられたバルブと、
異常発生時にローカル信号を出力するローカル機器と、
請求項１または２に記載のバルブ開閉制御装置とを備えることを特徴とするガス供給設備機器。 A valve provided in the middle of the gas conduit;
A local device that outputs a local signal when an error occurs,
A gas supply equipment comprising the valve opening / closing control device according to claim 1. 請求項３に記載のガス供給設備機器において、
前記ローカル機器は、地震発生時またはガス漏れ発生時に前記ローカル信号を出力することを特徴とするガス供給設備機器。 In the gas supply equipment according to claim 3,
The local equipment outputs the local signal when an earthquake occurs or a gas leak occurs.
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Publication number Priority date Publication date Assignee Title
JPH08136293A (en) * 1994-11-08 1996-05-31 Osaka Gas Co Ltd Remote resetter for gas meter
JPH10188191A (en) * 1996-12-27 1998-07-21 Tokyo Gas Co Ltd Information gathering control system
JP2001116200A (en) * 1999-10-15 2001-04-27 Tokyo Gas Co Ltd Fluid interrupting device and remote interrupting system using it
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JP2004205333A (en) * 2002-12-25 2004-07-22 Tokyo Gas Co Ltd Gas meter
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