JP2016148436A - Valve remote control - Google Patents
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Abstract
Description
本発明は、バルブ遠隔操作装置に関し、既設バルブの遠隔操作に有効な装置に関するものである。 The present invention relates to a valve remote control device, and relates to a device effective for remote control of an existing valve.
たとえば工場プラントで使用されているタンク元弁は、地震や津波などの災害発生時には、プラント設備の安全維持や、タンク貯蔵危険物の流出を防止するために、迅速に閉じる必要がある。そして、プラント設備の安全が確認できて運転を再開する場合には、タンク元弁を開けることになる。 For example, a tank main valve used in a factory plant needs to be quickly closed in the event of a disaster such as an earthquake or tsunami, in order to maintain the safety of the plant equipment and prevent the outflow of dangerous substances stored in the tank. When the safety of the plant equipment can be confirmed and the operation is resumed, the tank original valve is opened.
ところで、タンク元弁として手動バルブが設けられている場合には、作業者が設置現場に出向いて、手動操作で開閉しなければならない。このため、プラントの規模や構成によっては、タンク元弁の手動操作が現実的ではなくなる場合もある。 By the way, when a manual valve is provided as a tank original valve, an operator must go to the installation site and manually open and close it. For this reason, depending on the scale and configuration of the plant, manual operation of the tank main valve may not be realistic.
このため、既設の手動バルブに空気圧を駆動源とする空気モータを用いた自動開閉器を付加するとともに自動開閉器を動作させる操作パネルを近傍に配置し、計器室から操作パネルまで制御信号線を敷設することにより、計器室から手動バルブを遠隔操作することが従来から行なわれていた。 For this reason, an automatic switch using an air motor driven by air pressure is added to an existing manual valve, and an operation panel for operating the automatic switch is arranged nearby, and control signal lines are connected from the instrument room to the operation panel. Conventionally, the manual valve has been remotely operated from the instrument room by laying.
特許文献１には、手動バルブの遠隔操作に関する従来の問題点であった制御信号線の敷設の手間や、多数の手動バルブに適用した場合の制御信号の輻輳、維持管理工数増大を解決するために、無線信号で手動バルブを駆動制御するバルブ遠隔操作装置が開示されている。 In Patent Document 1, in order to solve the problems of laying a control signal line, which is a conventional problem related to remote operation of a manual valve, control signal congestion when applied to many manual valves, and an increase in maintenance man-hours. In addition, a valve remote control device for driving and controlling a manual valve with a radio signal is disclosed.
図３は、特許文献１に開示されているバルブ遠隔装置の構成を示すブロック図である。図３において、既設の手動バルブ３１０に付加されている自動開閉器３２０は、無線操作システム３５０により遠隔操作駆動される。自動開閉器３２０は、空気源３３０から供給される空気圧を駆動源とする空気モータ３２１と、空気モータ３２１を駆動する空気圧の供給回路である空気回路を切り換えることにより回転方向を切り換える空気回路切換弁３２２と、開側切換弁３２３ａと閉側切換弁３２３ｂとで構成される切換弁３２３と、開側リミットスイッチ３２４ａと閉側リミットスイッチ３２４ｂとで構成されるリミットスイッチ３２４とを備えている。 FIG. 3 is a block diagram showing the configuration of the valve remote device disclosed in Patent Document 1. As shown in FIG. In FIG. 3, an automatic switch 320 added to an existing manual valve 310 is remotely operated by a wireless operation system 350. The automatic switch 320 is an air circuit switching valve that switches a rotation direction by switching between an air motor 321 that uses air pressure supplied from an air source 330 as a driving source and an air circuit that is a pneumatic supply circuit that drives the air motor 321. 322, a switching valve 323 composed of an open side switching valve 323a and a closing side switching valve 323b, and a limit switch 324 composed of an open side limit switch 324a and a closing side limit switch 324b.
切換弁３２３は、空気回路切換弁３２２の空気回路を切り換える。リミットスイッチ３２４は、手動バルブ３１０の全開、全閉を検出してリミット制御用空気圧を出力する。空気モータ３２１の出力軸３２１ａは、手動バルブ３１０の手動操作部３１１に機械的に連結されている。 The switching valve 323 switches the air circuit of the air circuit switching valve 322. The limit switch 324 detects the fully open / closed state of the manual valve 310 and outputs the limit control air pressure. The output shaft 321 a of the air motor 321 is mechanically connected to the manual operation unit 311 of the manual valve 310.
無線操作システム３５０は、手動バルブ３１０および自動開閉器３２０の設置現場から離れた場所で操作される接点情報端末部３５１と、手動バルブ３１０および自動開閉器３２０の設置現場周辺に設けられる接点情報操作部３５２と、操作弁３５３と、リミット検出スイッチ３５４とを備えている。 The wireless operation system 350 includes a contact information terminal unit 351 operated at a location distant from the installation site of the manual valve 310 and the automatic switch 320, and a contact information operation provided around the installation site of the manual valve 310 and the automatic switch 320. A part 352, an operation valve 353, and a limit detection switch 354 are provided.
接点情報端末部３５１は、無線送受信部３５１ａと、接点情報入力部３５１ｂと、接点情報解析部３５１ｃとを含むものであって、接点情報操作部３５２との間で無線を介して操作信号の授受を行なう。なお、接点情報端末部３５１を駆動する電源部は図示しない。 The contact information terminal unit 351 includes a wireless transmission / reception unit 351a, a contact information input unit 351b, and a contact information analysis unit 351c, and exchanges operation signals with the contact information operation unit 352 via radio. To do. Note that a power supply unit that drives the contact information terminal unit 351 is not shown.
接点情報操作部３５２は、無線送受信部３５２ａと、接点情報出力部３５２ｂと、電源部３５２ｄと、接点情報読込部３５２ｆとを含むものであって、接点情報端末部３５１との間で無線を介して授受される操作信号に基づき、操作弁３５３を開閉駆動する。 The contact information operation unit 352 includes a wireless transmission / reception unit 352a, a contact information output unit 352b, a power supply unit 352d, and a contact information reading unit 352f, and wirelessly communicates with the contact information terminal unit 351. The operation valve 353 is driven to open and close based on the operation signal exchanged.
操作弁３５３は、開側電気的駆動弁３５３ａと、閉側電気的駆動弁３５３ｂとで構成されている。操作弁３５３は、ダブルラッチ型（ラッチ式、ホールド型等とも称される）電気的駆動弁である。ダブルラッチ型電気的駆動弁は、電磁弁等で構成することができ、状態を遷移させるときのみ電気エネルギーを印加し、状態を保持している間は電気エネルギーの印加が不要である。 The operation valve 353 includes an open side electric drive valve 353a and a close side electric drive valve 353b. The operation valve 353 is a double latch type (also referred to as a latch type or a hold type) electrically driven valve. The double latch type electrically driven valve can be constituted by an electromagnetic valve or the like, and applies electrical energy only when changing the state, and does not require application of electric energy while maintaining the state.
リミット検出スイッチ３５４は、開側リミット検出スイッチ３５４ａと閉側リミット検出スイッチ３５４ｂとで構成されており、リミットスイッチ３２４から出力されるリミット制御用空気圧を検出し、接点信号に変換する。 The limit detection switch 354 includes an open-side limit detection switch 354a and a closed-side limit detection switch 354b, and detects the limit control air pressure output from the limit switch 324 and converts it into a contact signal.
空気源３３０から入力される駆動制御用空気圧は、開側電気的駆動弁３５３ａ、開側切換弁３２３ａを介して空気回路切換弁３２２の開側に供給されるとともに、閉側電気的駆動弁３５３ｂ、閉側切換弁３２３ｂを介して空気回路切換弁３２２の閉側に供給される。 The air pressure for driving control input from the air source 330 is supplied to the open side of the air circuit switching valve 322 via the open side electric drive valve 353a and the open side switching valve 323a, and the closed side electric drive valve 353b. The air circuit switching valve 322 is supplied to the closing side via the closing side switching valve 323b.
このような構成において、空気モータ３２１を開側に動かしたい場合は、接点情報端末部３５１の接点情報入力部３５１ｂから接点情報操作部３５２に、接点情報出力部３５２ｂから開側電気的駆動弁３５３ａに入力される開側電気的駆動弁駆動信号Ｓｏｐをオンにする接点情報を、無線送受信部３５１ａおよび無線送受信部３５２ａを介して伝送する。 In such a configuration, when it is desired to move the air motor 321 to the open side, the contact information input unit 351b of the contact information terminal unit 351 is switched to the contact information operation unit 352, and the contact information output unit 352b is opened to the open side electrically driven valve 353a. The contact information for turning on the open-side electrically driven valve drive signal Sop input to is transmitted via the wireless transmission / reception unit 351a and the wireless transmission / reception unit 352a.
接点情報操作部３５２は、無線送受信部３５２ａで無線情報を受信すると、接点情報出力部３５２ｂが無線情報内における開接点情報のオンを認識し、出力する開接点情報をオンに遷移させる。 When the wireless information is received by the wireless transmission / reception unit 352a, the contact information operating unit 352 recognizes that the contact information output unit 352b is on the contact opening information in the wireless information, and changes the contact opening information to be output to ON.
信号遷移検出部３５２ｅは、接点情報がオフからオンに遷移する状態を検出し、遷移点から任意の所定時間、開側電気的駆動弁駆動信号Ｓｏｐをオンにする。 The signal transition detection unit 352e detects a state in which the contact information transitions from off to on, and turns on the open-side electrically driven valve drive signal Sop for an arbitrary predetermined time from the transition point.
開側電気的駆動弁駆動信号Ｓｏｐのオンにより開側電気的駆動弁３５３ａが駆動されると、開側切換弁３２３ａが開側に切り換わり、空気源３３０から入力される駆動制御用空気圧が空気モータ３２１の開側に供給されて空気モータ３２１が開方向に回り、手動操作部３１１が空気モータ３２１の出力軸３２１ａと機械的に連結されている手動バルブ３１０が開側に開いていく。 When the open-side electric drive valve 353a is driven by turning on the open-side electric drive valve drive signal Sop, the open-side switching valve 323a is switched to the open side, and the drive control air pressure input from the air source 330 is air. The air valve 321 is supplied to the opening side of the motor 321 and the air motor 321 rotates in the opening direction, and the manual valve 310 in which the manual operation unit 311 is mechanically connected to the output shaft 321a of the air motor 321 opens to the opening side.
開側リミットスイッチ３２４ａが、空気モータ３２１の全開を検出すると、リミット制御用空気圧を出力し、このリミット制御用空気圧を開側リミット検出スイッチ３５４ａが検出して接点信号に変換する。また、開側リミットスイッチ３２４ａが出力するリミット制御用空気圧により、開側切換弁３２３ａが閉側に切り換わる。 When the open side limit switch 324a detects that the air motor 321 is fully opened, the limit control air pressure is output, and this limit control air pressure is detected by the open side limit detection switch 354a and converted into a contact signal. Further, the open side switching valve 323a is switched to the closed side by the limit control air pressure output from the open side limit switch 324a.
接点信号は接点情報読込部３５２ｆで接点情報操作部３５２に読み込まれ、無線送受信部３５２ａおよび接点情報端末部３５１の無線送受信部３５１ａを介して接点情報解析部３５１ｃに伝送される。 The contact signal is read into the contact information operation unit 352 by the contact information reading unit 352f and transmitted to the contact information analysis unit 351c via the wireless transmission / reception unit 352a and the wireless transmission / reception unit 351a of the contact information terminal unit 351.
接点情報端末部３５１の接点情報解析部３５１ｃは、これらリミット制御用空気圧に関連した接点情報がオンになったことを確認すると、その接点情報をオフに遷移させるというフィードバックを行なう。 When the contact information analysis unit 351c of the contact information terminal unit 351 confirms that the contact information related to the limit control air pressure is turned on, the contact information analysis unit 351c performs feedback that the contact information is turned off.
空気モータ３２１を閉側に動かしたい場合も同様の手順で閉接点情報および閉側電気的駆動弁駆動信号Ｓｃｌを変化させることにより空気モータ３２１を閉側に駆動し、手動バルブ３１０を閉状態にする。 When it is desired to move the air motor 321 to the closed side, the air motor 321 is driven to the closed side by changing the closed contact information and the closed electric drive valve drive signal Scl in the same procedure, and the manual valve 310 is closed. To do.
これにより、タンク元弁として設けられている手動バルブを、無線により遠隔操作することができ、地震や津波などの災害発生時には迅速に閉じ、安全確認後速やかに開けることができる。このとき、制御信号線の敷設は不要であり、操作対象となるタンク元弁の数が多くなっても制御信号線が輻輳することはなく、制御信号線の維持管理工数が発生することもない。 Thereby, the manual valve provided as the tank original valve can be remotely operated by radio, and can be quickly closed when a disaster such as an earthquake or tsunami occurs, and can be opened quickly after the safety is confirmed. At this time, it is not necessary to install a control signal line, and even if the number of tank source valves to be operated increases, the control signal line will not be congested, and maintenance man-hours for the control signal line will not occur. .
従来のバルブ遠隔装置では、操作弁３５３として、開側切換弁３２３ａを駆動するための開側電気的駆動弁３５３ａと、閉側切換弁３２３ｂを駆動するための閉側電気的駆動弁３５３ｂとを用いていた。このため、電気的駆動弁２台分の実装場所が必要になるとともに電気的駆動弁２台分の電気配線、空気配管が必要であった。 In the conventional valve remote device, as the operation valve 353, an open side electric drive valve 353a for driving the open side changeover valve 323a and a close side electric drive valve 353b for driving the close side changeover valve 323b are provided. I used it. For this reason, a mounting place for two electrically driven valves is required, and electric wiring and air piping for two electrically driven valves are necessary.
このため、電気的駆動弁の数を減らすことができれば、必要な実装場所、電気配線、空気配管を減らすことができ、バルブ遠隔装置の小型化、コストダウンを実現することができる。 For this reason, if the number of electrically driven valves can be reduced, the required mounting location, electrical wiring, and air piping can be reduced, and the size and cost of the remote valve device can be reduced.
そこで、本発明は、バルブ遠隔装置において、使用する電気的駆動弁の数を減らすことを目的とする。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the number of electrically driven valves used in a valve remote device.
上記課題を解決するため、本発明は、バルブの操作部に空気圧を駆動源とする空気モータの出力軸を機械的に連結し、前記バルブを遠隔操作するように構成されたバルブ遠隔操作装置において、接点情報端末部と接点情報操作部との間で無線を介して授受される操作信号により操作されるダブルラッチ型の方向切換電気的駆動弁と、前記方向切換電気的駆動弁により開閉が切り換えられる開側切換弁および閉側切換弁と、前記開側切換弁が開の時に、前記空気モータを開方向に回転駆動するように空気回路を切り換え、前記閉側切換弁が開の時に、前記空気モータを閉方向に回転駆動するように空気回路を切り換える空気回路切換弁と、前記バルブの全開を検出すると前記開側切換弁を閉に切り換え、前記バルブの全閉を検出すると前記閉側切換弁を閉に切り換えるリミットスイッチと、を備えたことを特徴とする。 In order to solve the above-described problems, the present invention provides a valve remote control device configured to mechanically connect an output shaft of an air motor using air pressure as a drive source to an operation portion of a valve, and to remotely operate the valve. , A double latch type direction switching electric drive valve operated by an operation signal transmitted and received wirelessly between the contact information terminal unit and the contact information operation unit, and opening and closing are switched by the direction switching electric drive valve When the open side switching valve and the open side switching valve are open, the air circuit is switched so as to rotationally drive the air motor in the opening direction, and when the close side switching valve is open, An air circuit switching valve that switches an air circuit so as to rotationally drive the air motor in the closing direction; and when the valve is fully opened, the open-side switching valve is switched to a closed state; A limit switch for switching the valve to the closed, characterized by comprising a.
本発明によれば、バルブ遠隔装置において、使用する電気的駆動弁の数を減らすことができる。 According to the present invention, the number of electrically driven valves to be used can be reduced in the valve remote device.
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遠隔装置の構成を示すブロック図である。図１において、既設の手動バルブ１１０に付加されている自動開閉器１２０は、無線操作システム１５０により遠隔操作駆動される。自動開閉器１２０は、空気源１３０から供給される空気圧を駆動源とする空気モータ１２１と、空気モータ１２１を駆動する空気圧の供給回路である空気回路を切り換えることにより回転方向を切り換える空気回路切換弁１２２と、開側切換弁１２３ａと閉側切換弁１２３ｂとで構成される切換弁１２３と、開側リミットスイッチ１２４ａと閉側リミットスイッチ１２４ｂとで構成されるリミットスイッチ１２４とを備えている。
なお、自動開閉器１２０は、既設の手動バルブ１１０のみならず、新規に設置される手動バルブに付加してもよい。この場合も、無線操作システム１５０により遠隔操作することができる。
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the remote valve device according to this embodiment. In FIG. 1, an automatic switch 120 added to an existing manual valve 110 is remotely operated by a wireless operation system 150. The automatic switch 120 is an air circuit switching valve that switches a rotation direction by switching between an air motor 121 that uses air pressure supplied from an air source 130 as a driving source and an air circuit that is a pneumatic supply circuit that drives the air motor 121. 122, a switching valve 123 composed of an open side switching valve 123a and a closing side switching valve 123b, and a limit switch 124 composed of an open side limit switch 124a and a closing side limit switch 124b.
The automatic switch 120 may be added not only to the existing manual valve 110 but also to a newly installed manual valve. Also in this case, the wireless operation system 150 can be operated remotely.
切換弁１２３は、空気回路切換弁１２２の空気回路を切り換える。リミットスイッチ１２４は、機械的な変位により空気圧の開閉を行なう機械作動弁等を用いることができ、手動バルブ１１０の全開、全閉を検出してリミット制御用空気圧を出力する。空気モータ１２１の出力軸１２１ａは、手動バルブ１１０の手動操作部１１１に機械的に連結されている。 The switching valve 123 switches the air circuit of the air circuit switching valve 122. The limit switch 124 can be a mechanically operated valve that opens and closes air pressure by mechanical displacement, and detects whether the manual valve 110 is fully open or fully closed and outputs limit control air pressure. The output shaft 121 a of the air motor 121 is mechanically connected to the manual operation unit 111 of the manual valve 110.
無線操作システム１５０は、手動バルブ１１０および自動開閉器１２０の設置現場から離れた場所で操作される接点情報端末部１５１と、手動バルブ１１０および自動開閉器１２０の設置現場周辺に設けられる接点情報操作部１５２と、方向切換電気的駆動弁１５３と、リミット検出スイッチ１５４とを備えている。方向切換電気的駆動弁１５３は、電磁弁やピエゾ素子等を用いて構成することができる。 The wireless operation system 150 includes a contact information terminal 151 that is operated at a location away from the installation site of the manual valve 110 and the automatic switch 120, and a contact information operation that is provided around the installation site of the manual valve 110 and the automatic switch 120. Part 152, direction switching electric drive valve 153, and limit detection switch 154. The direction switching electric drive valve 153 can be configured using an electromagnetic valve, a piezoelectric element, or the like.
接点情報端末部１５１は、無線送受信部１５１ａと、接点情報入力部１５１ｂと、接点情報解析部１５１ｃとを含むものであって、接点情報操作部１５２との間で無線を介して操作信号の授受を行なう。なお、接点情報端末部１５１を駆動する電源部は図示しない。 The contact information terminal unit 151 includes a wireless transmission / reception unit 151a, a contact information input unit 151b, and a contact information analysis unit 151c, and exchanges operation signals with the contact information operation unit 152 via wireless communication. To do. In addition, the power supply part which drives the contact information terminal part 151 is not illustrated.
接点情報操作部１５２は、無線送受信部１５２ａと、接点情報出力部１５２ｂと、電源部１５２ｄと、接点情報読込部１５２ｆとを含むものであって、接点情報端末部１５１との間で無線を介して授受される操作信号に基づき、方向切換電気的駆動弁１５３を開閉駆動する。 The contact information operation unit 152 includes a wireless transmission / reception unit 152a, a contact information output unit 152b, a power supply unit 152d, and a contact information reading unit 152f, and wirelessly communicates with the contact information terminal unit 151. The direction switching electric drive valve 153 is opened / closed based on the operation signal transmitted / received.
方向切換電気的駆動弁１５３は、空気源１３０が供給する駆動制御用空気圧を開側切換弁１２３ａ、閉側切換弁１２３ｂのいずれかに導く操作弁として機能するダブルラッチ型電気的駆動弁である。本実施形態では、操作弁を１つの電気的駆動弁で構成している。このように、電気的駆動弁の数を従来よりも減らしているため、必要な実装場所、電気配線、空気配管を減らすことができ、バルブ遠隔装置の小型化、コストダウンを実現することができる。 The direction switching electric drive valve 153 is a double latch type electric drive valve that functions as an operation valve that guides the drive control air pressure supplied from the air source 130 to either the open side switch valve 123a or the close side switch valve 123b. . In this embodiment, the operation valve is constituted by one electrically driven valve. As described above, since the number of electrically driven valves is reduced as compared with the prior art, the required mounting location, electrical wiring, and air piping can be reduced, and the valve remote device can be reduced in size and cost. .
すなわち、従来は、空気源１３０が供給する駆動制御用空気圧を、１）開側切換弁１２３ａに印加、２）閉側切換弁１２３ｂに印加、３）どちらにも印加しない、という３つの状態を作り出すために、開側電気的駆動弁と閉側電気的駆動弁という２つの電気的駆動弁を使用していた。 That is, conventionally, there are three states in which the air pressure for driving control supplied by the air source 130 is 1) applied to the opening side switching valve 123a, 2) applied to the closing side switching valve 123b, and 3) not applied to either. To produce, two electric drive valves were used, an open side electric drive valve and a closed side electric drive valve.
しかしながら、一般に、自動開閉器１２０では、空気モータ１２１を開側に動かす際には、開側リミットスイッチ１２４ａが、手動バルブ１１０の全開を検出してリミット制御用空気圧を出力し、開側切換弁１２３ａを閉側に切り換える。また、空気モータ１２１を閉側に動かす際には、閉側リミットスイッチ１２４ｂが、手動バルブ１１０の全閉を検出してリミット制御用空気圧を出力し、閉側切換弁１２３ｂを閉側に切り換える。 However, in general, in the automatic switch 120, when the air motor 121 is moved to the open side, the open-side limit switch 124a detects the full opening of the manual valve 110 and outputs the limit control air pressure, and the open-side switching valve. 123a is switched to the closed side. When the air motor 121 is moved to the closing side, the closing side limit switch 124b detects that the manual valve 110 is fully closed, outputs the limit control air pressure, and switches the closing side switching valve 123b to the closing side.
このため、多くの用途においては、駆動制御用空気圧を、開側切換弁１２３ａと閉側切換弁１２３ｂとのどちらにも印加しないという状態を作り出す必要性は高くない。そこで、本実施形態では、開側電気的駆動弁と閉側電気的駆動弁という２つの電気的駆動弁に代えて、方向切換電気的駆動弁１５３を用いることで、電気的駆動弁の数を従来よりも減らすようにしている。 For this reason, in many applications, it is not necessary to create a state in which the drive control air pressure is not applied to either the open side switching valve 123a or the close side switching valve 123b. Therefore, in this embodiment, instead of the two electric drive valves, that is, the open side electric drive valve and the closed side electric drive valve, the direction switching electric drive valve 153 is used, thereby reducing the number of electric drive valves. We try to reduce it than before.
リミット検出スイッチ１５４は、開側リミット検出スイッチ１５４ａと閉側リミット検出スイッチ１５４ｂとで構成されている。リミット検出スイッチ１５４は、印加される空気圧に応じて電気接点がオン／オフする圧力スイッチ等と用いることができ、リミットスイッチ１２４から出力されるリミット制御用空気圧を検出し、接点信号に変換する。 The limit detection switch 154 includes an open side limit detection switch 154a and a close side limit detection switch 154b. The limit detection switch 154 can be used as a pressure switch whose electrical contact is turned on / off in accordance with the applied air pressure, detects the limit control air pressure output from the limit switch 124, and converts it into a contact signal.
空気源１３０から入力される駆動制御用空気圧は、方向切換電気的駆動弁１５３から開側切換弁１２３ａを介して空気回路切換弁１２２の開側に供給されるとともに、方向切換電気的駆動弁１５３から閉側切換弁１２３ｂを介して空気回路切換弁１２２の閉側に供給される。 The drive control air pressure input from the air source 130 is supplied from the direction switching electric drive valve 153 to the open side of the air circuit switching valve 122 via the open side switching valve 123a, and the direction switching electric drive valve 153. To the closed side of the air circuit switching valve 122 through the closing side switching valve 123b.
このような構成において、空気モータ１２１を開側に動かしたい場合は、接点情報端末部１５１の接点情報入力部１５１ｂから接点情報操作部１５２に、接点情報出力部１５２ｂから方向切換電気的駆動弁１５３に入力される電気的駆動弁駆動信号を開側にする接点情報を、無線送受信部１５１ａおよび無線送受信部１５２ａを介して伝送する。 In such a configuration, when it is desired to move the air motor 121 to the open side, the contact information input unit 151b of the contact information terminal unit 151 is switched to the contact information operation unit 152, and the contact information output unit 152b is switched to the direction switching electric drive valve 153. The contact information for opening the electrically driven valve drive signal input to the open side is transmitted via the wireless transmission / reception unit 151a and the wireless transmission / reception unit 152a.
接点情報操作部１５２は、無線送受信部１５２ａで無線情報を受信すると、接点情報出力部１５２ｂが無線情報内における接点情報の開側を認識し、出力する接点情報を開側に遷移させる。 When the wireless information is received by the wireless transmission / reception unit 152a, the contact information operation unit 152 causes the contact information output unit 152b to recognize the open side of the contact information in the wireless information and shift the output contact information to the open side.
信号遷移検出部１５２ｅは、接点情報が閉側から開側に遷移する状態を検出し、遷移点から任意の所定時間、開側の電気的駆動弁駆動信号を出力する。 The signal transition detection unit 152e detects a state in which the contact information transitions from the closed side to the open side, and outputs an open-side electrically driven valve drive signal for an arbitrary predetermined time from the transition point.
開側の電気的駆動弁駆動信号により方向切換電気的駆動弁１５３が開側に駆動されると、開側切換弁１２３ａが開側に切り換わり、空気源１３０から入力される駆動制御用空気圧が空気モータ１２１の開側に供給されて空気モータ１２１が開方向に回り、手動操作部１１１が空気モータ１２１の出力軸１２１ａと機械的に連結されている手動バルブ１１０が開側に開いていく。 When the direction switching electric drive valve 153 is driven to the open side by the open side electric drive valve drive signal, the open side switch valve 123a is switched to the open side, and the drive control air pressure input from the air source 130 is changed. The air valve 121 is supplied to the open side of the air motor 121 so that the air motor 121 rotates in the opening direction, and the manual valve 110 mechanically connected to the output shaft 121a of the air motor 121 is opened to the open side.
開側リミットスイッチ１２４ａが、手動バルブ１１０の全開を検出すると、リミット制御用空気圧を出力し、このリミット制御用空気圧を開側リミット検出スイッチ１５４ａが検出して接点信号に変換する。また、開側リミットスイッチ１２４ａが出力するリミット制御用空気圧により、開側切換弁１２３ａが閉側に切り換わる。これにより、空気モータ１２１の回転が停止するため、方向切換電気的駆動弁１５３が開側状態を維持しても問題は生じない。 When the open side limit switch 124a detects that the manual valve 110 is fully opened, the limit control air pressure is output, and the limit control air pressure is detected by the open side limit detection switch 154a and converted into a contact signal. Further, the open side switching valve 123a is switched to the closed side by the limit control air pressure output from the open side limit switch 124a. Thereby, since the rotation of the air motor 121 is stopped, there is no problem even if the direction switching electric drive valve 153 maintains the open state.
接点信号は接点情報読込部１５２ｆで接点情報操作部１５２に読み込まれ、無線送受信部１５２ａおよび接点情報端末部１５１の無線送受信部１５１ａを介して接点情報解析部１５１ｃに伝送される。 The contact signal is read into the contact information operation unit 152 by the contact information reading unit 152f and transmitted to the contact information analysis unit 151c via the wireless transmission / reception unit 152a and the wireless transmission / reception unit 151a of the contact information terminal unit 151.
空気モータ１２１を閉側に動かしたい場合も同様の手順で閉接点情報を出力し、閉側の電気的駆動弁駆動信号を出力させることにより、方向切換電気的駆動弁１５３が開側から閉側に切り換わることで空気モータ１２１を閉側に駆動し、手動バルブ１１０を閉状態にする。 When it is desired to move the air motor 121 to the closed side, the closed contact information is output in the same procedure and the electric drive valve drive signal on the close side is output, so that the direction switching electric drive valve 153 is closed from the open side to the closed side. By switching to, the air motor 121 is driven to the closed side, and the manual valve 110 is closed.
なお、上記の実施形態では、リミットスイッチ１２４が出力するリミット制御用空気圧を、リミット検出スイッチ１５４が電気的な接点信号に変換して、接点情報操作部１５２が取り込んでいた。これに対して、図２の変形例に示すように、機械的な変位により電気接点の開閉を行なうリミットスイッチ（電気接点式）１２５を用いて、リミット検出スイッチ１５４を用いずに接点信号を接点情報操作部１５２が取り込むようにしてもよい。この場合、リミットスイッチ（電気接点式）１２５が、リミットスイッチ１２４とともに手動バルブ１１０の全開、全閉を検出して、接点信号を接点情報読込部１５２ｆに出力する。 In the above-described embodiment, the limit control air pressure output from the limit switch 124 is converted into an electrical contact signal by the limit detection switch 154, and the contact information operation unit 152 takes it in. On the other hand, as shown in the modified example of FIG. 2, a contact point signal is sent without using the limit detection switch 154 by using a limit switch (electric contact type) 125 that opens and closes an electrical contact by mechanical displacement. The information operation unit 152 may capture the information. In this case, the limit switch (electrical contact type) 125 detects the full opening and the full closing of the manual valve 110 together with the limit switch 124, and outputs a contact signal to the contact information reading unit 152f.
変形例によれば、空気源１３０からの空気供給が止まっても、接点情報端末部１５１が接点情報を取得することができるという利点がある。 According to the modification, even if the air supply from the air source 130 is stopped, there is an advantage that the contact information terminal unit 151 can acquire the contact information.
１１０…手動バルブ、１１１…手動操作部、１２０…自動開閉器、１２１…空気モータ、１２２…空気回路切換弁、１２３…切換弁、１２３ａ…開側切換弁、１２３ｂ…閉側切換弁、１２４…リミットスイッチ、１２４ａ…開側リミットスイッチ、１２４ｂ…閉側リミットスイッチ、１２５…リミットスイッチ（電気接点式）、１３０…空気源、１５０…無線操作システム、１５１…接点情報端末部、１５１ａ…無線送受信部、１５１ｂ…接点情報入力部、１５１ｃ…接点情報解析部、１５２…接点情報操作部、１５２ａ…無線送受信部、１５２ｂ…接点情報出力部、１５２ｄ…電源部、１５２ｅ…信号遷移検出部、１５２ｆ…接点情報読込部、１５３…方向切換電気的駆動弁、１５４…リミット検出スイッチ、１５４ａ…開側リミット検出スイッチ、１５４ｂ…閉側リミット検出スイッチ DESCRIPTION OF SYMBOLS 110 ... Manual valve, 111 ... Manual operation part, 120 ... Automatic switch, 121 ... Air motor, 122 ... Air circuit switching valve, 123 ... Switching valve, 123a ... Open side switching valve, 123b ... Close side switching valve, 124 ... Limit switch, 124a ... Open side limit switch, 124b ... Closed side limit switch, 125 ... Limit switch (electric contact type), 130 ... Air source, 150 ... Wireless operation system, 151 ... Contact information terminal unit, 151a ... Wireless transmission / reception unit 151b ... Contact information input unit 151c ... Contact information analysis unit 152 ... Contact information operation unit 152a ... Wireless transmission / reception unit 152b ... Contact information output unit 152d ... Power supply unit 152e ... Signal transition detection unit 152f ... Contact Information reading unit, 153... Direction switching electric drive valve, 154... Limit detection switch, 154a. Switch, 154b ... closing-side limit detection switch
Claims (1)
接点情報端末部と接点情報操作部との間で無線を介して授受される操作信号により操作されるダブルラッチ型の方向切換電気的駆動弁と、
前記方向切換電気的駆動弁により開閉が切り換えられる開側切換弁および閉側切換弁と、
前記開側切換弁が開の時に、前記空気モータを開方向に回転駆動するように空気回路を切り換え、前記閉側切換弁が開の時に、前記空気モータを閉方向に回転駆動するように空気回路を切り換える空気回路切換弁と、
前記バルブの全開を検出すると前記開側切換弁を閉に切り換え、前記バルブの全閉を検出すると前記閉側切換弁を閉に切り換えるリミットスイッチと、
を備えたことを特徴とするバルブ遠隔操作装置。 In a valve remote control device configured to mechanically connect an output shaft of an air motor that uses air pressure as a drive source to an operation portion of the valve, and to remotely operate the valve,
A double-latch type direction switching electric drive valve operated by an operation signal transmitted and received wirelessly between the contact information terminal unit and the contact information operation unit;
An opening-side switching valve and a closing-side switching valve whose opening and closing are switched by the direction switching electric drive valve;
When the open side switching valve is open, the air circuit is switched so as to rotationally drive the air motor in the opening direction, and when the closing side switching valve is open, the air motor is rotationally driven in the closing direction. An air circuit switching valve for switching the circuit;
A limit switch that switches the open side switching valve to closed when detecting the full opening of the valve, and switches the closed side switching valve to close when detecting the full close of the valve;
A valve remote control device characterized by comprising:
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| WO2019023086A1 (en) * | 2017-07-25 | 2019-01-31 | Dresser, Llc | Improving manufacture of remote control stations for use to operate actuators on a valve assembly |
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