JP6664339B2 - Operation assist device for manually operated valve - Google Patents

Operation assist device for manually operated valve Download PDF

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JP6664339B2
JP6664339B2 JP2017008419A JP2017008419A JP6664339B2 JP 6664339 B2 JP6664339 B2 JP 6664339B2 JP 2017008419 A JP2017008419 A JP 2017008419A JP 2017008419 A JP2017008419 A JP 2017008419A JP 6664339 B2 JP6664339 B2 JP 6664339B2
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manually operated
operated valve
handle
assist device
attachment
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JP2018116016A (en
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隆義 中嶋
隆義 中嶋
小野寺　賢司
賢司 小野寺
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Hitachi GE Nuclear Energy Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は手動操作弁の操作補助装置に係り、特に、原子力発電プラントに使用されている手動操作弁を緊急時に操作するものに好適な手動操作弁の操作補助装置に関するものである。   The present invention relates to an operation assisting device for a manually operated valve, and more particularly to an operation assisting device for a manually operated valve suitable for operating a manually operated valve used in a nuclear power plant in an emergency.

発電施設などで使用されている手動ハンドル操作弁は、用途が多種多様にわたり、さまざまな条件下で使用されている。   BACKGROUND ART A manual handle operation valve used in a power generation facility or the like has a wide variety of uses and is used under various conditions.

その中でも原子力発電プラントに使用されている手動ハンドル操作弁は、原子力発電プラントの安全運転及び安定運転を行う上で大きな役割を担っている。   Among them, a manual handle operation valve used in a nuclear power plant plays a significant role in performing a safe operation and a stable operation of the nuclear power plant.

その役割として手動ハンドル操作弁は、原子力発電プラントに流れる水や空気或いはガス等の流体を開閉動作にて制御する機能を有している製品である。   As its role, a manual handle operation valve is a product having a function of controlling a fluid such as water, air, or gas flowing in a nuclear power plant by opening and closing operations.

その中で、例えば、原子力発電プラント内の全電源喪失事故が発生した場合、電動弁特有の機能である自動開閉動作が不可能となり、緊急時に弁の手動操作に時間を要する弁に対して開閉動作さえも困難となる事態が想定されている。   For example, in the event of a total power loss accident in a nuclear power plant, for example, automatic opening / closing operation, which is a function unique to a motor-operated valve, becomes impossible. It is assumed that even the operation becomes difficult.

なお、小さい駆動力でハンドルを回転させることで下水処理場及び浄水処理場等の貯水池や配水池、給水池等の水門や水槽或は水路等に設けたゲートを開閉操作する開閉機を駆動する技術が特許文献１に記載されている。   By rotating the handle with a small driving force, a switch for opening and closing a gate provided in a sluice, a water tank or a waterway of a sewage treatment plant, a water treatment plant, etc. The technology is described in Patent Document 1.

この特許文献１には、小型軽量で持ち運びが容易な開閉機の可搬型駆動装置を得ることを目的として、電動機にシャフトを介して連結した減速機と、減速機にシャフトを介して連結した連結軸とを備え、連結軸の先端に凹部を形成し、ハンドルの中心軸部に設けたと突部に嵌合させ、電動機の駆動によって連結軸と中心軸部を一体回転させ、ハンドルを回転させてゲートを開閉調整することが記載されている。   Patent Document 1 discloses a reduction gear connected to an electric motor via a shaft and a connection connected to a reduction gear via a shaft in order to obtain a portable drive device for a switchgear which is small, lightweight and easy to carry. A shaft is provided, a concave portion is formed at the tip of the connecting shaft, and provided on the center shaft portion of the handle and fitted to the protrusion, and the connecting shaft and the center shaft portion are integrally rotated by driving the electric motor, and the handle is rotated. It describes that the gate is opened and closed.

このような特許文献１に記載の開閉機の可搬型駆動装置によれば、電動機の回転力を減速機によって減速してハンドルに伝達すると、電動機の回転力（トルク）は減速機により増幅されて開閉機のハンドルに伝達されることになるので、小さい駆動力でハンドルを回転させることができてゲートを開閉することができ、しかも、減速機で減速することで駆動力が小さくても回転駆動できるため、電動機は可搬型で小型のものが採用でき、ゲートの開閉機が高地や山間地等に設置されていても容易に持ち運びができるものである。   According to the portable drive device for a switchgear described in Patent Document 1, when the torque of the electric motor is reduced by the speed reducer and transmitted to the steering wheel, the torque (torque) of the motor is amplified by the speed reducer. Since the power is transmitted to the handle of the switchgear, the handle can be rotated with a small driving force and the gate can be opened and closed. In addition, even if the driving force is small by reducing the speed with the reduction gear, the rotary drive is performed. Since the motor can be used, a portable and small motor can be adopted, and the motor can be easily carried even if the gate opening / closing device is installed in a highland or a mountainous area.

特開２０１５−５２２２６号公報JP-A-2005-52226

しかしながら、原子力発電プラント内の全電源喪失事故が発生した場合には、電動弁特有の機能である自動開閉動作が不可能となり、緊急時に手動操作により弁を開閉しようとしても時間が掛かり、特に、時間を要する高トルクを要する大口径弁に対して開閉動作さえも困難となってしまうという問題がある。   However, when a power loss accident in a nuclear power plant occurs, automatic opening / closing operation, which is a function unique to a motor-operated valve, becomes impossible, and it takes time to open and close the valve by manual operation in an emergency. There is a problem that even an opening and closing operation becomes difficult for a large-diameter valve requiring a long time and a high torque.

一方、特許文献１は、下水処理場や浄水処理場等の貯水池や配水池、給水池等の水門や水槽或は水路等に設けたゲートを開閉操作する開閉機を駆動するものであり、原子力発電プラント内の全電源喪失事故が発生した場合を全く想定していない。   On the other hand, Patent Literature 1 drives a switchgear that opens and closes a gate provided in a sluice, a water tank, a waterway, or the like of a reservoir, a distribution reservoir, a water supply reservoir, or the like of a sewage treatment plant or a water purification plant, It is not assumed at all that a power loss accident in a power plant occurs.

本発明は上述の点に鑑みなされたもので、その目的とするところは、原子力発電プラントにおける全電源喪失時であっても、緊急時の手動操作の弁の開閉に時間が掛かることはなく、しかも、高トルクを要する大口径弁であっても操作時間を短縮し、容易に開閉操作が可能な手動操作弁の操作補助装置を提供することにある。   The present invention has been made in view of the above points, and the purpose thereof is that even when total power supply is lost in a nuclear power plant, opening and closing of a manually operated valve in an emergency does not take time, In addition, an object of the present invention is to provide an operation assisting device for a manually operated valve that can shorten the operation time even for a large-diameter valve that requires a high torque and that can be easily opened and closed.

本発明の手動操作弁の操作補助装置は、上記目的を達成するために、原子力発電プラントに設置されている手動操作弁を、前記原子力発電プラントの緊急時に操作する手動操作弁の操作補助装置であって、前記原子力発電プラントの緊急時に前記手動操作弁の弁駆動部に接続され、駆動部からの駆動力を前記弁駆動部に伝達するハンドル付アタッチメントと、該ハンドル付アタッチメントへ駆動力を伝達する倍力レンチと、前記弁駆動部に固定され、前記倍力レンチを支持するサポート部とを備え、前記ハンドル付アタッチメントはアタッチメントとハンドル部とから成り、前記アタッチメントには凹部が形成され、この凹部に前記ハンドル部のスポークを嵌め込むことで着脱可能に構成されていることを特徴とする。 In order to achieve the above object, a manual operation valve operation assist device of the present invention is a manual operation valve operation assist device that operates a manual operation valve installed in a nuclear power plant in an emergency of the nuclear power plant. And an attachment with a handle that is connected to the valve drive unit of the manually operated valve in an emergency of the nuclear power plant and transmits a drive force from the drive unit to the valve drive unit, and that transmits the drive force to the attachment with the handle. A booster wrench, and a support portion fixed to the valve drive portion and supporting the booster wrench, the attachment with a handle includes an attachment and a handle portion, and a recess is formed in the attachment. It is characterized in that it is configured to be detachable by fitting the spoke of the handle portion into the recess .

本発明によれば、原子力発電プラントにおける全電源喪失時であっても、緊急時の手動操作の弁の開閉に時間が掛かることはなく、しかも、高トルクを要する大口径弁であっても操作時間を短縮し、容易に開閉操作が可能となる。   According to the present invention, even in the event of a total power loss in a nuclear power plant, opening and closing of a manually operated valve in an emergency does not take a long time, and even a large-diameter valve requiring a high torque is operated. The time can be shortened, and the opening and closing operation can be easily performed.

本発明の手動操作弁の操作補助装置の実施例１を示す概略構成図である。It is a schematic structure figure showing Example 1 of an operation auxiliary device of a manual operation valve of the present invention.

以下、図示した実施例に基づいて本発明の手動操作弁の操作補助装置を説明する。   Hereinafter, an operation assisting device for a manually operated valve according to the present invention will be described based on the illustrated embodiment.

図１に、本発明の手動操作弁の操作補助装置の実施例１を示す。   FIG. 1 shows a first embodiment of an operation assisting device for a manually operated valve according to the present invention.

該図に示すように、本実施例の手動操作弁の操作補助装置１０は、原子力発電プラントに設置されている手動操作弁（図示せず）の操作補助装置１０であって、手動操作弁の弁駆動部１に接続され、駆動部（図示せず）からの駆動力を弁駆動部１に伝達する手動ハンドル２付のハンドル操作用アタッチメント３と、手動ハンドル２付のハンドル操作用アタッチメント３へ駆動力を伝達する倍力レンチ（加わる力が倍になる）４と、弁駆動部１の弁台座１ａにボルト１ｂで固定され、倍力レンチ４を支持する反力受け用サポート部５と、倍力レンチ４を回転させる携帯電気ドリル（ＪＩＳＣ９６０５）６を備えて概略構成されている。   As shown in the figure, an operation assisting device 10 for a manually operated valve according to the present embodiment is an operation assisting device 10 for a manually operated valve (not shown) installed in a nuclear power plant. A handle operation attachment 3 with a manual handle 2 and a handle operation attachment 3 with a manual handle 2 that are connected to the valve drive unit 1 and transmit a driving force from a drive unit (not shown) to the valve drive unit 1. A booster wrench (the applied force is doubled) 4 for transmitting the driving force, a reaction force receiving support portion 5 fixed to the valve seat 1a of the valve drive portion 1 with bolts 1b, and supporting the booster wrench 4; It is schematically configured with a portable electric drill (JISC9605) 6 for rotating the booster wrench 4.

上記倍力レンチ４は、エクステンションバー７及びトルクリミッタ８を介して、手動ハンドル２付のハンドル操作用アタッチメント３に駆動力を伝達する。なお、トルクリミッタ８は、手動操作弁に加わる力を緩和するものであり、倍力レンチ４とエクステンションバー７、エクステンションバー７とトルクリミッタ８の接続は、嵌め込み式で着脱自在となっている。   The booster wrench 4 transmits a driving force to the handle operation attachment 3 with the manual handle 2 via the extension bar 7 and the torque limiter 8. The torque limiter 8 reduces the force applied to the manually operated valve. The connection between the booster wrench 4 and the extension bar 7 and the connection between the extension bar 7 and the torque limiter 8 are of a fitting type and are detachable.

また、ハンドル操作用アタッチメント３と手動ハンドル２は、ハンドル操作用アタッチメント３には凹部が形成され、この凹部に手動ハンドル２のスポーク２ａを嵌め込むことで着脱可能に構成されている。   The handle operation attachment 3 and the manual handle 2 are configured so that a recess is formed in the handle operation attachment 3, and the spoke 2 a of the manual handle 2 is fitted into the recess so as to be detachable.

また、反力受け用サポート部５は、手動ハンドル２の回転を阻害しない範囲内の位置で、弁駆動部１に装着され、倍力レンチ４は、倍力レンチ４と共に回転するレバー４ａを有し、このレバー４ａの回転を反力受け用サポート部５で受けることで支持されている。   Further, the reaction force receiving support portion 5 is mounted on the valve driving portion 1 at a position within a range that does not hinder the rotation of the manual handle 2, and the booster wrench 4 has a lever 4 a that rotates together with the booster wrench 4. The lever 4a is supported by receiving the rotation of the lever 4a by the reaction force receiving support portion 5.

このような本実施例の構成とすることにより、原子力発電プラントの全電源喪失時等には、携帯電気ドリル（ＪＩＳＣ９６０５）６を倍力レンチ４に差し込んで駆動することにより、短時間で弁の開閉操作を行うことができ、緊急時に弁の手動操作に時間を要しハンドル操作に高トルクを要する大口径弁であっても、操作時間を短縮して容易に開閉操作を行うことができる。また、トルクリミッタ８を装着していることから、弁への過剰なトルクも抑制できる。   By adopting such a configuration of the present embodiment, the portable electric drill (JISC9605) 6 is driven by inserting it into the booster wrench 4 in a short time when the power of the nuclear power plant is lost or the like. The opening / closing operation can be performed. Even in the case of a large-diameter valve that requires time for manual operation of the valve and requires high torque for handle operation in an emergency, the operation time can be shortened and the opening / closing operation can be easily performed. Further, since the torque limiter 8 is mounted, excessive torque to the valve can be suppressed.

なお、特に図示しないが、手動ハンドル２付のハンドル操作用アタッチメント３と弁駆動部１をフレキシブルシャフトで連結することにより、ハンドル操作用アタッチメント３と弁駆動部１の高さが相違しても、携帯電気ドリル（ＪＩＳＣ９６０５）６の回転力を、ハンドル操作用アタッチメント３を介して弁駆動部１に伝達することができる。   Although not particularly shown, the handle operation attachment 3 with the manual handle 2 and the valve drive unit 1 are connected by a flexible shaft, so that even if the handle operation attachment 3 and the valve drive unit 1 have different heights, The rotational force of the portable electric drill (JISC9605) 6 can be transmitted to the valve drive unit 1 via the handle operation attachment 3.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Also, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

１…弁駆動部、１ａ…弁台座、１ｂ…ボルト、２…手動ハンドル、２ａ…スポーク、３…ハンドル操作用アタッチメント、４…倍力レンチ、４ａ…レバー、５…反力受け用サポート部、６…携帯電気ドリル、７…エクステンションバー、８…トルクリミッタ、１０…手動操作弁の操作補助装置。   DESCRIPTION OF SYMBOLS 1 ... Valve drive part, 1a ... Valve seat, 1b ... Bolt, 2 ... Manual handle, 2a ... Spoke, 3 ... Handle operation attachment, 4 ... Double wrench, 4a ... Lever, 5 ... Reaction force receiving support part, 6: Portable electric drill, 7: Extension bar, 8: Torque limiter, 10: Operation assisting device for manually operated valve.

Claims (7)

原子力発電プラントに設置されている手動操作弁を、前記原子力発電プラントの緊急時に操作する手動操作弁の操作補助装置であって、
前記原子力発電プラントの緊急時に前記手動操作弁の弁駆動部に接続され、駆動部からの駆動力を前記弁駆動部に伝達するハンドル付アタッチメントと、該ハンドル付アタッチメントへ駆動力を伝達する倍力レンチと、前記弁駆動部に固定され、前記倍力レンチを支持するサポート部とを備え、
前記ハンドル付アタッチメントはアタッチメントとハンドル部とから成り、前記アタッチメントには凹部が形成され、この凹部に前記ハンドル部のスポークを嵌め込むことで着脱可能に構成されていることを特徴とする手動操作弁の操作補助装置。 A manually operated valve installed in a nuclear power plant, an operation assisting device for a manually operated valve that operates in an emergency of the nuclear power plant ,
Attachment with a handle connected to the valve drive unit of the manually operated valve in the event of an emergency of the nuclear power plant, and transmitting drive force from the drive unit to the valve drive unit, and a booster for transmitting drive force to the handle attachment. A wrench, and a support unit fixed to the valve drive unit and supporting the booster wrench ;
The manually-operated valve , wherein the attachment with a handle includes an attachment and a handle portion, and the attachment is formed with a concave portion, and is detachably configured by fitting a spoke of the handle portion into the concave portion. Operation assist device. 請求項１に記載の手動操作弁の操作補助装置において、
前記手動操作弁の操作補助装置は、前記倍力レンチを回転させる携帯電気ドリルを備えていることを特徴とする手動操作弁の操作補助装置。 The operation assist device for a manually operated valve according to claim 1,
The operation assisting device for a manually operated valve is provided with a portable electric drill for rotating the booster wrench. 請求項１又は２に記載の手動操作弁の操作補助装置において、
前記倍力レンチは、エクステンションバー及びトルクリミッタを介して前記ハンドル付アタッチメントに駆動力を伝達することを特徴とする手動操作弁の操作補助装置。 The operation assist device for a manually operated valve according to claim 1 or 2,
The operation assist device for a manually operated valve, wherein the booster wrench transmits a driving force to the attachment with the handle via an extension bar and a torque limiter. 請求項１に記載の手動操作弁の操作補助装置において、
前記サポート部は、前記ハンドル部の回転を阻害しない範囲内の位置で、前記弁駆動部に装着されていることを特徴とする手動操作弁の操作補助装置。 The operation assist device for a manually operated valve according to claim 1 ,
The assisting device for a manually operated valve, wherein the support portion is mounted on the valve driving portion at a position within a range that does not hinder rotation of the handle portion. 請求項１乃至４のいずれか１項に記載の手動操作弁の操作補助装置において、
前記倍力レンチは、該倍力レンチと共に回転するレバーを有し、前記レバーの回転を前記サポート部で受けることで支持されていることを特徴とする手動操作弁の操作補助装置。 An operation assisting device for a manually operated valve according to any one of claims 1 to 4 ,
The booster wrench has a lever that rotates together with the booster wrench, and is supported by receiving the rotation of the lever by the support portion. 請求項３に記載の手動操作弁の操作補助装置において、
前記トルクリミッタは、前記手動操作弁に加わる力を緩和するものであることを特徴とする手動操作弁の操作補助装置。 The operation assist device for a manually operated valve according to claim 3,
The operation assist device for a manually operated valve, wherein the torque limiter reduces a force applied to the manually operated valve. 請求項１に記載の手動操作弁の操作補助装置において、
前記ハンドル付アタッチメントと前記弁駆動部が、フレキシブルシャフトで連結されていることを特徴とする手動操作弁の操作補助装置。 The operation assist device for a manually operated valve according to claim 1,
The operation assist device for a manually operated valve, wherein the attachment with the handle and the valve drive unit are connected by a flexible shaft.
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