JP6677054B2 - Valve opening and closing system - Google Patents
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Description
本発明は、中央制御側からの強制閉操作可能で、中央制御側から現場への強制閉操作専用の電気配線を不要とするバルブ開閉システムおよび中央制御装置に関する。 The present invention relates to a valve opening / closing system and a central control device that can be forcibly closed from a central control side and do not require electric wiring dedicated to the forced closing operation from the central control side to a site.
既設の手動バルブに対して、後付けすることで手動バルブを遠隔操作するバルブ自動開閉器が実用化されている。図４は、空気源３２０から供給されるエアーを駆動源とし、外部から入力される開空気圧信号および閉空気圧信号により手動バルブ３３０の開閉動作を行なうエアー駆動型バルブ自動開閉器３１０の構成を示すブロック図である。 Automatic valve switches that remotely control a manual valve by retrofitting an existing manual valve have been put into practical use. FIG. 4 shows the configuration of an air-driven valve automatic switch 310 that uses the air supplied from the air source 320 as a drive source and opens and closes a manual valve 330 in response to an open air pressure signal and a closed air pressure signal input from outside. It is a block diagram.
エアー駆動型バルブ自動開閉器３１０は、手動バルブ３３０に連結され開閉を行なうエアーモータ３１１、エアーモータ３１１への空気経路を開側／閉側／止のいずれかに切り替えるエアーバルブ制御切替弁３１２、開空気圧信号に基づいてエアーバルブ制御切替弁３１２を開側に切り替える開側切替弁３１３、閉空気圧信号に基づいてエアーバルブ制御切替弁３１２を閉側に切り替える閉側切替弁３１４、手動バルブ３３０の開側リミットを検出して、開側切替弁３１３を閉じる開側リミットスイッチ３１５、手動バルブ３３０の閉側リミットを検出して、閉側切替弁３１４を閉じる閉側リミットスイッチ３１６を備えている。開閉状態を示すエアーランプや手動バルブ３３０の開閉状態がリミットに達したことを外部に出力する空気端子等を備えるようにしてもよい。 An air-driven valve automatic switch 310 is connected to a manual valve 330 to open and close, an air motor 311, an air valve control switching valve 312 for switching an air path to the air motor 311 to open / close / stop, The open-side switching valve 313 that switches the air valve control switching valve 312 to the open side based on the open air pressure signal, the closed-side switching valve 314 that switches the air valve control switching valve 312 to the closed side based on the closed air pressure signal, and the manual valve 330 An open-side limit switch 315 for detecting the open-side limit and closing the open-side switching valve 313 and a closing-side limit switch 316 for detecting the closed-side limit of the manual valve 330 and closing the closed-side switching valve 314 are provided. An air lamp for indicating that the open / closed state of the manual valve 330 has reached the limit, an air terminal for outputting to the outside, or the like may be provided.
図５は、エアー駆動型バルブ自動開閉器３１０を利用した従来のバルブ開閉システム３００の構成を示すブロック図である。バルブ開閉システム３００は、現場／中央切換用手動バルブ３２１を備えており、手動バルブ３３０の開閉操作を現場で行なうか中央制御室３４０で行なうかを現場にて手動で切り替えることができるようになっている。 FIG. 5 is a block diagram showing a configuration of a conventional valve opening / closing system 300 using an air-driven automatic valve opening / closing device 310. The valve opening / closing system 300 includes a manual valve 321 for on-site / central switching, so that the on-off operation of the manual valve 330 can be manually switched on-site or on-site in the central control room 340. ing.
手動バルブ３３０の開閉操作を現場で行なう場合には、開閉操作用手動バルブ３２２を手動操作することにより手動バルブ３３０の開閉動作を行なわせることができる。具体的には、開閉操作用手動バルブ３２２が開側に切り替えられると、開側シャトルバルブ３２３を介して、開空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力し、開閉操作用手動バルブ３２２が閉側に切り替えられると、閉側シャトルバルブ３２４を介して、閉空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力する。 When the opening and closing operation of the manual valve 330 is performed on site, the opening and closing operation of the manual valve 330 can be performed by manually operating the manual valve 322 for opening and closing operation. Specifically, when the open / close operation manual valve 322 is switched to the open side, an open air pressure signal is input to the air-driven valve automatic switch 310 via the open side shuttle valve 323, and the open / close operation manual valve 322 is opened. Is switched to the closed side, a closed air pressure signal is input to the air-driven valve automatic switch 310 via the closed side shuttle valve 324.
現場／中央切換用手動バルブ３２１が中央側に切り替えられると、開閉切換電気的駆動弁３２６にエアーが供給されるとともに、空電変換器３２５を介して出力される中央選択電気信号が中央制御室３４０に伝えられる。 When the on-site / central switching manual valve 321 is switched to the central side, air is supplied to the open / close switching electric drive valve 326, and a central selection electric signal output via the pneumatic converter 325 is transmitted to the central control room. 340.
この状態で、中央制御室３４０が電気的駆動弁開電気信号を出力すると、開閉切換電気的駆動弁３２６が開側に切り替えられ、開側シャトルバルブ３２３を介して、開空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力する。また、中央制御室３４０が電気的駆動弁閉電気信号を出力すると、開閉切換電気的駆動弁３２６が閉側に切り替えられ、閉側シャトルバルブ３２４を介して、閉空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力する。 In this state, when the central control room 340 outputs the electric drive valve opening electric signal, the open / close switching electric drive valve 326 is switched to the open side, and the open air pressure signal is transmitted through the open side shuttle valve 323 to the air drive type. Input to the automatic valve switch 310. Further, when the central control room 340 outputs the electric drive valve closing electric signal, the open / close switching electric drive valve 326 is switched to the closing side, and the closed air pressure signal is transmitted via the closing side shuttle valve 324 to the air driven valve automatic. Input to the switch 310.
ところで、災害等の緊急事態が発生した際には、安全のため手動バルブ３３０を迅速に閉じる必要がある。このような場合に、現場／中央切換用手動バルブ３２１の切換状態にかかわらず、中央制御室３４０が強制的に閉操作を行なえるように、現場／中央切換用手動バルブ３２１の前段に強制閉操作用電気的駆動弁３２７が設けられ、開閉切換電気的駆動弁３２６の閉側と閉側シャトルバルブ３２４との間に強制閉シャトルバルブ３２８が設けられている。 By the way, when an emergency such as a disaster occurs, it is necessary to quickly close the manual valve 330 for safety. In such a case, regardless of the switching state of the on-site / central switching manual valve 321, the central control room 340 is forcibly closed before the on-site / central switching manual valve 321 so that the central control room 340 can forcibly perform the closing operation. An operating electric drive valve 327 is provided, and a forced closing shuttle valve 328 is provided between the closed side and the closed side shuttle valve 324 of the open / close switching electric drive valve 326.
中央制御室３４０が強制閉電気信号を強制閉操作用電気的駆動弁３２７に出力すると、強制閉シャトルバルブ３２８から閉側シャトルバルブ３２４を通って、閉空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力するため、エアー駆動型バルブ自動開閉器３１０が閉動作を行なうことになる。 When the central control room 340 outputs the forced closing electric signal to the electric drive valve 327 for the forced closing operation, the forced closing shuttle valve 328 passes through the closing side shuttle valve 324, and the closed air pressure signal is transmitted to the air-driven valve automatic switch 310. , The air-driven valve automatic switch 310 performs the closing operation.
上述のように、中央制御室３４０から強制閉操作を行なえるようにするために、強制閉操作用電気的駆動弁３２７を現場に設けている。このため、中央制御室３４０から開閉切換電気的駆動弁３２６までの電気配線および中央制御室３４０から空電変換器３２５までの電気配線に加え、中央制御室３４０から強制閉操作用電気的駆動弁３２７までの強制閉操作専用の電気配線が必要である。 As described above, the electric drive valve 327 for forced closing operation is provided on site so that the forced closing operation can be performed from the central control room 340. Therefore, in addition to the electric wiring from the central control room 340 to the open / close switching electric drive valve 326 and the electric wiring from the central control room 340 to the static electricity converter 325, the electric drive valve for forced closing operation from the central control room 340 Electrical wiring dedicated to the forced closing operation up to 327 is required.
一般に、中央制御室３４０は、現場から遠隔地にあるため、システム構築のコスト削減の観点から工事で敷設する電気配線数は少ない方が好ましい。 Generally, since the central control room 340 is located at a remote place from the site, it is preferable that the number of electric wirings laid in the construction be small from the viewpoint of cost reduction in system construction.
そこで、本発明は、中央制御側からの強制閉操作可能なバルブ開閉システムにおいて、強制閉操作専用の電気配線を不要とすることを目的とする。 In view of the above, an object of the present invention is to eliminate the need for an electrical wiring dedicated to a forced closing operation in a valve opening / closing system capable of a forced closing operation from a central control side.
上記課題を解決するため、本発明の第１の態様であるバルブ開閉システムは、現場に配置された手動バルブの開閉動作を中央制御側から遠隔操作するバルブ開閉システムであって、前記手動バルブの操作を現場で行なうか中央制御側で行なうかの切り換えを行なう現場／中央切換用手動バルブと、現場で前記手動バルブの開閉操作を行なうための開閉操作用手動バルブと、電気的駆動信号に基づいて、前記手動バルブの開閉動作を行なわせ、閉動作時に前記開閉操作用手動バルブを無効化する開閉切換電気的駆動弁と、中央制御装置と、を備え、前記中央制御装置は、開動作または閉動作を指示する開閉操作指示を受け付ける開閉操作部と、強制閉動作を指示する強制閉操作指示を受け付ける強制操作部と、インターロック部と、前記インターロック部から伝達された開閉操作指示あるいは強制閉操作指示に基づく電気的駆動信号を前記開閉切換電気的駆動弁に出力する開閉情報変換部と、を備え、前記インターロック部は、前記現場／中央切換用手動バルブの切換状態を取得し、中央制御側に切り替えられている場合は、前記開閉操作指示および強制閉操作指示を前記開閉情報変換部に伝達し、現場に切り替えられている場合は、前記開閉操作指示を遮断し、強制閉操作指示を前記開閉情報変換部に伝達することを特徴とするバルブ開閉システム。
ここで、前記強制操作部は、強制開動作を指示する強制開操作指示をさらに受け付け、前記インターロック部は、前記現場／中央切換用手動バルブの切換状態にかかわらず、強制開操作指示を前記開閉情報変換部に伝達し、前記開閉切換電気的駆動弁は、開動作時にも前記開閉操作用手動バルブを無効化してもよい。
上記課題を解決するため、本発明の第２の態様である中央制御装置は、開動作または閉動作を指示する開閉操作指示を受け付ける開閉操作部と、強制閉動作を指示する強制閉操作指示を受け付ける強制操作部と、インターロック部と、前記インターロック部から伝達された開閉操作指示あるいは強制閉操作指示に基づく電気的駆動信号を出力する開閉情報変換部と、を備え、前記インターロック部は、制御権の有無を示す情報を取得し、制御権がある場合は、前記開閉操作指示および強制閉操作指示を前記開閉情報変換部に伝達し、制御権がない場合は、前記開閉操作指示を遮断し、強制閉操作指示を前記開閉情報変換部に伝達することを特徴とする。
In order to solve the above problems, a valve opening / closing system according to a first aspect of the present invention is a valve opening / closing system that remotely controls the opening / closing operation of a manual valve arranged on site from a central control side, wherein the manual valve A manual valve for on-site / central switching for switching between operation on site and central control, an on-off manual valve for opening and closing the manual valve on site, and an electric drive signal. An open / close switching electric drive valve for causing the manual valve to be opened and closed during the closing operation, and a central control device; and the central control device includes an open operation or An opening / closing operation unit for receiving an opening / closing operation instruction for instructing a closing operation, a forced operation unit for receiving a forced closing operation instruction for instructing a forced closing operation, an interlock unit, An opening / closing information conversion unit that outputs an electric drive signal based on the opening / closing operation instruction or the forced closing operation instruction transmitted from the lock unit to the open / close switching electric drive valve, wherein the interlock unit includes the site / center Acquire the switching state of the switching manual valve, if the switching has been switched to the central control side, the opening and closing operation instruction and the forced closing operation instruction is transmitted to the opening and closing information conversion unit, if it is switched to the site, A valve opening / closing system, wherein the opening / closing operation instruction is interrupted and a forced closing operation instruction is transmitted to the opening / closing information conversion unit.
Here, the forcible operation unit further receives a forcible opening operation instruction for instructing a forcible opening operation, and the interlock unit issues the forcibly opening operation instruction regardless of a switching state of the site / center switching manual valve. The opening / closing switching electric drive valve may be transmitted to the opening / closing information conversion unit, and may also invalidate the opening / closing operation manual valve even during the opening operation.
In order to solve the above problem, a central control device according to a second aspect of the present invention includes an opening / closing operation unit that receives an opening / closing operation instruction for instructing an opening operation or a closing operation, and a forced closing operation instruction for instructing a forced closing operation. A forced operation unit to receive, an interlock unit, and an open / close information conversion unit that outputs an electrical drive signal based on the open / close operation instruction or the forced close operation instruction transmitted from the interlock unit, and the interlock unit includes: Acquiring the information indicating the presence or absence of the control right, if there is a control right, the opening / closing operation instruction and the forced closing operation instruction are transmitted to the opening / closing information conversion unit, and if there is no control right, the opening / closing operation instruction is transmitted. It shuts off and transmits a forced closing operation instruction to the opening / closing information conversion unit.
本発明によれば、中央制御側からの強制閉操作可能なバルブ開閉システムにおいて、強制閉操作専用の電気配線を不要とすることができる。 ADVANTAGE OF THE INVENTION According to this invention, in the valve opening / closing system which can perform a forced closing operation from a central control side, the electric wiring only for a forced closing operation can be made unnecessary.
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、本実施形態に係るバルブ開閉システム１００の構成を示すブロック図である。操作対象の手動バルブ３３０およびエアー駆動型バルブ自動開閉器３１０は、従来と同様であり、汎用品を用いることができる。 An embodiment 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 system 100 according to the present embodiment. The manual valve 330 and the air-driven valve automatic switch 310 to be operated are the same as the conventional ones, and general-purpose products can be used.
本図に示すように、バルブ開閉システム１００は、現場／中央切換用手動バルブ１０１、開閉操作用手動バルブ１０２、開側シャトルバルブ１０３、閉側シャトルバルブ１０４、開閉切換電気的駆動弁１０５、空電変換器１０６、切換バルブ１０７、中央制御装置１５０を備えている。中央制御装置１５０は、中央制御室に備えられ、その他の機器は、現場に備えられている。 As shown in the figure, the valve opening / closing system 100 includes a manual valve 101 for on-site / central switching, a manual valve 102 for opening / closing operation, an opening shuttle valve 103, a closing shuttle valve 104, an opening / closing switching electric drive valve 105, and an empty valve. It includes an electric converter 106, a switching valve 107, and a central control device 150. The central control device 150 is provided in a central control room, and other devices are provided on site.
切換バルブ１０７は、中央制御装置１５０から強制閉操作を行なうときに、現場での開閉操作を不能にするために設けられており、通常時には開状態にある。空気源３２０が出力するエアーは、エアー駆動型バルブ自動開閉器３１０、現場／中央切換用手動バルブ１０１、開閉切換電気的駆動弁１０５に供給される。 The switching valve 107 is provided to disable opening and closing operations on site when a forced closing operation is performed from the central control device 150, and is normally open. The air output from the air source 320 is supplied to the air-driven valve automatic switch 310, the on-site / center switching manual valve 101, and the open / close switching electric drive valve 105.
現場／中央切換用手動バルブ１０１は、手動バルブ３３０の開閉操作を現場で行なうか中央制御室の中央制御装置１５０で行なうかを手動で切り替えるためのバルブである。 The on-site / central switching manual valve 101 is a valve for manually switching between opening and closing the manual valve 330 at the site or with the central control device 150 in the central control room.
手動バルブ３３０の開閉操作を現場で行なう場合には、開閉操作用手動バルブ１０２を手動操作することにより手動バルブ３３０の開閉動作を行なわせることができる。具体的には、開閉操作用手動バルブ１０２が開側に切り替えられると、開側シャトルバルブ１０３を介して、開空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力し、開閉操作用手動バルブ１０２が閉側に切り替えられると、閉側シャトルバルブ１０４を介して、閉空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力する。 When the opening and closing operation of the manual valve 330 is performed on site, the opening and closing operation of the manual valve 330 can be performed by manually operating the manual valve 102 for opening and closing operation. Specifically, when the open / close operation manual valve 102 is switched to the open side, an open air pressure signal is input to the air-driven valve automatic switch 310 via the open side shuttle valve 103, and the open / close operation manual valve 102 Is switched to the closed side, a closed air pressure signal is input to the air-driven valve automatic switch 310 via the closed side shuttle valve 104.
ただし、中央制御装置１５０で強制閉操作を行なう場合には、切換バルブ１０７により開閉操作用手動バルブ１０２へのエアー供給が止められるため、開閉操作用手動バルブ１０２の操作が無効となり、現場で開閉操作を行なうことはできない。 However, when the central control device 150 performs the forced closing operation, the air supply to the opening / closing operation manual valve 102 is stopped by the switching valve 107, so that the operation of the opening / closing operation manual valve 102 becomes invalid, and No operations can be performed.
現場／中央切換用手動バルブ１０１が中央側に切り替えられると、空電変換器１０６が中央選択電気信号を中央制御装置１５０に出力する。中央選択電気信号は、中央制御装置１５０の制御権の有無を示すことになる。 When the on-site / central switching manual valve 101 is switched to the central side, the static converter 106 outputs a central selection electric signal to the central controller 150. The central selection electric signal indicates the presence or absence of the control right of the central controller 150.
中央制御装置１５０は、中央制御室で手動バルブ３３０の遠隔操作を受け付ける装置であり、手動バルブ３３０の開閉操作指示を受け付ける開閉操作部１５１、手動バルブ３３０の強制閉操作指示を受け付ける強制閉操作部１５２、中央選択電気信号が入力される接点情報解析部１５３、接点情報インターロック部１５４、開閉情報変換部１５５を備えている。 The central control device 150 is a device that receives a remote operation of the manual valve 330 in the central control room, and includes an opening / closing operation unit 151 that receives an opening / closing operation instruction of the manual valve 330 and a forced closing operation unit that receives a forced closing operation instruction of the manual valve 330. 152, a contact information analysis unit 153 to which a central selection electric signal is input, a contact information interlock unit 154, and an open / close information conversion unit 155.
接点情報解析部１５３は、入力される中央選択電気信号により、現場／中央切換用手動バルブ１０１の状態を判定する。 The contact information analyzer 153 determines the state of the on-site / center switching manual valve 101 based on the input center selection electric signal.
開閉情報変換部１５５は、接点情報インターロック部１５４が出力する開操作指示を、開閉切換電気的駆動弁１０５を開側に切り替える電気的駆動弁開電気信号に変換し、接点情報インターロック部１５４が出力する閉操作指示（強制閉操作指示を含む）を、開閉切換電気的駆動弁１０５を閉側に切り替える電気的駆動弁閉電気信号に変換する。 The opening / closing information conversion unit 155 converts the opening operation instruction output by the contact information interlock unit 154 into an electric drive valve opening electric signal for switching the opening / closing switching electric drive valve 105 to the open side, and outputs the contact information interlock unit 154. Converts the closing operation instruction (including the compulsory closing operation instruction) output to the electric drive valve closing electric signal for switching the open / close switching electric drive valve 105 to the closing side.
接点情報インターロック部１５４は、接点情報解析部１５３が判定した現場／中央切換用手動バルブ１０１の状態を取得し、開閉操作部１５１あるいは強制閉操作部１５２から送られた操作指示に対して、図２に示すような動作を行なう。 The contact information interlock unit 154 acquires the state of the on-site / center switching manual valve 101 determined by the contact information analysis unit 153, and responds to an operation instruction sent from the opening / closing operation unit 151 or the forced closing operation unit 152. The operation as shown in FIG. 2 is performed.
すなわち、現場／中央切換用手動バルブ１０１が現場側に切り替えられている場合には、開閉操作部１５１からの開閉操作指示を遮断して、開閉操作指示を開閉情報変換部１５５に出力しない。これにより、開閉切換電気的駆動弁１０５は止状態となり、中央制御装置１５０からの開閉操作指示に基づく手動バルブ３３０の開閉動作は行なわれない。 That is, when the on-site / center switching manual valve 101 is switched to the on-site side, the on / off operation instruction from the on / off operation unit 151 is shut off, and the on / off operation instruction is not output to the on / off information conversion unit 155. As a result, the open / close switching electric drive valve 105 is stopped, and the opening / closing operation of the manual valve 330 based on the opening / closing operation instruction from the central control device 150 is not performed.
現場／中央切換用手動バルブ１０１が現場側に切り替えられている場合であっても強制閉操作部１５２から強制閉操作指示が送られると、（強制）閉操作指示を開閉情報変換部１５５に伝達する。これにより、開閉情報変換部１５５が開閉切換電気的駆動弁１０５を閉側に切り替える。この結果、切換バルブ１０７が止状態となって現場における開閉操作用手動バルブ１０２の操作が無効となるとともに、閉側シャトルバルブ１０４を介して、閉空気圧信号がエアー駆動型バルブ自動開閉器３１０に入力するため手動バルブ３３０の閉動作が優先的に行なわれる。 Even when the on-site / center switching manual valve 101 is switched to the on-site side, when the forcible closing operation instruction is sent from the forcibly closing operation unit 152, the (forcibly) closing operation instruction is transmitted to the open / close information conversion unit 155. I do. As a result, the open / close information conversion unit 155 switches the open / close switching electric drive valve 105 to the closed side. As a result, the switching valve 107 is stopped, the operation of the on-off operation manual valve 102 at the site is invalidated, and a closed air pressure signal is sent to the air-driven valve automatic switch 310 via the closing shuttle valve 104. For inputting, the closing operation of the manual valve 330 is preferentially performed.
現場／中央切換用手動バルブ１０１が中央側に切り替えられている場合には、開閉操作指示、強制閉操作指示とも開閉情報変換部１５５に伝達する。これにより、開閉操作部１５１および強制閉操作部１５２から送られた開閉操作指示に従った開閉動作が行なわれる。 When the on-site / center switching manual valve 101 is switched to the center side, both the opening / closing operation instruction and the forced closing operation instruction are transmitted to the opening / closing information conversion unit 155. Thus, the opening / closing operation is performed according to the opening / closing operation instruction sent from the opening / closing operation section 151 and the forced closing operation section 152.
このように、本実施形態のバルブ開閉システム１００は、接点情報インターロック部１５４が、現場／中央切換用手動バルブ１０１が中央側に切り替えられている場合には、開閉操作指示、強制閉操作指示とも開閉情報変換部１５５に伝達し、現場／中央切換用手動バルブ１０１が現場側に切り替えられている場合には、開閉操作指示を遮断し、強制閉操作指示のみを開閉情報変換部１５５に伝達するため、中央制御側からの強制閉操作が可能となっている。このため、強制閉電気信号専用の電気配線を不要としている。 As described above, in the valve opening / closing system 100 of the present embodiment, when the contact information interlock unit 154 switches the on-site / center switching manual valve 101 to the center side, the opening / closing operation instruction and the forced closing operation instruction are performed. Are transmitted to the open / close information conversion unit 155, and when the manual valve 101 for switching the site / center is switched to the site side, the open / close operation instruction is interrupted and only the forced close operation instruction is transmitted to the open / close information conversion unit 155. Therefore, a forced closing operation from the central control side is possible. This eliminates the need for electrical wiring dedicated to the forced closing electrical signal.
なお、本発明は上記の実施形態に限られず、種々の変形が可能である。例えば、図３に示すように、中央制御装置１５０において、強制閉操作部１５２に代えて、強制開操作指示も可能な強制開閉操作部１５７を備えるようにしてもよい。 Note that the present invention is not limited to the above embodiment, and various modifications are possible. For example, as shown in FIG. 3, the central control device 150 may include a forced open / close operation unit 157 capable of giving a forced open operation instruction instead of the forced close operation unit 152.
この場合、接点情報インターロック部１５４は、現場／中央切換用手動バルブ１０１が現場側に切り替えられている場合であっても強制閉操作指示に加え強制開操作指示も開閉情報変換部１５５に伝達する。このため、強制開閉電気信号専用の電気配線は不要である。 In this case, even when the on-site / center switching manual valve 101 is switched to the on-site side, the contact information interlock unit 154 transmits the forcible open operation instruction as well as the forcibly open operation instruction to the open / close information conversion unit 155. I do. Therefore, there is no need for electrical wiring dedicated to the forced opening / closing electrical signal.
また、開閉切換電気的駆動弁１０５が、開側あるいは閉側に切り替えられた場合に、切換バルブ１０７を止側に切り替えて、現場における開閉操作用手動バルブ１０２の操作を無効とするためにシャトルバルブ１０８を用いるようにしている。 Further, when the open / close switching electric drive valve 105 is switched to the open side or the close side, the shuttle valve is switched to the stop side to invalidate the operation of the open / close operation manual valve 102 at the site. The valve 108 is used.
１００…バルブ開閉システム、１０１…中央切換用手動バルブ、１０２…開閉操作用手動バルブ、１０３…開側シャトルバルブ、１０４…閉側シャトルバルブ、１０５…開閉切換電気的駆動弁、１０６…空電変換器、１０７…切換バルブ、１０８…シャトルバルブ、１５０…中央制御装置、１５１…開閉操作部、１５２…強制閉操作部、１５３…接点情報解析部、１５４…接点情報インターロック部、１５５…開閉情報変換部、１５７…強制開閉操作部、３１０…エアー駆動型バルブ自動開閉器、３３０…手動バルブ Reference numeral 100: valve opening / closing system, 101: central switching manual valve, 102: opening / closing operation manual valve, 103: open side shuttle valve, 104: closed side shuttle valve, 105: open / close switching electric drive valve, 106: static electricity conversion Device 107 switching valve 108 shuttle valve 150 central control device 151 opening / closing operation unit 152 forced closing operation unit 153 contact information analysis unit 154 contact information interlock unit 155 opening / closing information Conversion unit, 157: forced open / close operation unit, 310: air-driven valve automatic switch, 330: manual valve
Claims (2)
前記手動バルブの操作を現場で行なうか中央制御側で行なうかの切り換えを行なう現場／中央切換用手動バルブと、
前記現場／中央切換用手動バルブが現場側に切り替えられている場合に、現場で前記手動バルブの開閉操作を行なうための開閉操作用手動バルブと、
電気的駆動信号に基づいて、前記手動バルブの開閉動作を行なわせ、閉動作時に前記開閉操作用手動バルブの操作を無効化する開閉切換電気的駆動弁と、
中央制御装置と、を備え、
前記中央制御装置は、
開動作または閉動作を指示する開閉操作指示を受け付ける開閉操作部と、
強制閉動作を指示する強制閉操作指示を受け付ける強制操作部と、
インターロック部と、
前記インターロック部から伝達された開閉操作指示あるいは強制閉操作指示に基づく電気的駆動信号を前記開閉切換電気的駆動弁に出力する開閉情報変換部と、を備え、
前記インターロック部は、
前記現場／中央切換用手動バルブの切換状態を取得し、
中央制御側に切り替えられている場合は、前記開閉操作指示および強制閉操作指示を前記開閉情報変換部に伝達し、
現場に切り替えられている場合は、前記開閉操作指示を遮断し、強制閉操作指示を前記開閉情報変換部に伝達することを特徴とするバルブ開閉システム。 A valve opening / closing system that remotely controls the opening / closing operation of a manual valve arranged at a site from a central control side,
An on-site / central switching manual valve for switching between operation of the manual valve on site and central control;
When the on-site / center switching manual valve is switched to the on-site side, an on-off operation manual valve for performing on-site opening and closing operation of the manual valve;
An open / close switching electric drive valve that performs the opening / closing operation of the manual valve based on the electric drive signal and invalidates the operation of the manual valve for opening / closing operation during the closing operation.
A central control unit;
The central control device includes:
An opening and closing operation unit for receiving an opening and closing operation instruction for instructing an opening operation or a closing operation;
A forced operation unit for receiving a forced closing operation instruction for instructing a forced closing operation,
Interlock part,
An opening / closing information conversion unit that outputs an electric drive signal based on the opening / closing operation instruction or the forced closing operation instruction transmitted from the interlock unit to the open / close switching electric drive valve,
The interlock unit,
Acquiring the switching state of the manual valve for on-site / central switching,
When switching to the central control side, the open / close operation instruction and the forced close operation instruction are transmitted to the open / close information conversion unit,
The valve opening / closing system is characterized in that when it is switched to a site, the opening / closing operation instruction is shut off and a forced closing operation instruction is transmitted to the opening / closing information conversion unit.
前記インターロック部は、前記現場／中央切換用手動バルブの切換状態にかかわらず、強制開操作指示を前記開閉情報変換部に伝達し、
前記開閉切換電気的駆動弁は、開動作時にも前記開閉操作用手動バルブの操作を無効化することを特徴とする請求項１に記載のバルブ開閉システム。 The forced operation unit further receives a forced open operation instruction for instructing a forced open operation,
The interlock unit transmits a forced opening operation instruction to the opening / closing information conversion unit regardless of the switching state of the on-site / central switching manual valve,
2. The valve opening / closing system according to claim 1, wherein the open / close switching electric drive valve invalidates the operation of the manual valve for opening / closing operation even during an opening operation. 3.
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