JP2014238172A - Emergency shut-off valve device - Google Patents

Emergency shut-off valve device Download PDF

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JP2014238172A
JP2014238172A JP2014150802A JP2014150802A JP2014238172A JP 2014238172 A JP2014238172 A JP 2014238172A JP 2014150802 A JP2014150802 A JP 2014150802A JP 2014150802 A JP2014150802 A JP 2014150802A JP 2014238172 A JP2014238172 A JP 2014238172A
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valve
shut
brake
drive shaft
mechanical
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JP6005695B2 (en
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達也 小松
Tatsuya Komatsu
達也 小松
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BEN KK
Venn Co Ltd
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BEN KK
Venn Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an emergency shut-off valve device in which re-starting of water conduction at the time of power failure can be easily carried out and at the same time its introduction cost is less-expensive and its resetting work and maintenance work are carried out under its relatively trouble-free state.SOLUTION: This emergency shut-off valve device 3A comprises a shut-off valve 30A, a driving part 35 for operating the shut-off valve in its valve-closing direction, a brake part 36 for keeping a valve-opened state of the shut-off valve 30A and a brake releasing part 363a for closing the shut-off valve 30A while releasing the brake in which a seismoscope is operated to act against the brake releasing part 363a to close the shut-off valve 30A and to perform an automatic shut-off of water service of water supply piping. The driving part 35 has a driving shaft 351 and a coil spring 350. The shut-off valve 30A is biased in a valve-closing direction under a state in which the coil spring 350 is wound. When a crank handle 38 is manually turned under a closed state of the shut-off valve 30A, the shut-off valve 30A is opened while the coil spring 350 is being rewound and then it is fixed at the brake part 36 and its reset is completed.

Description

本発明は、緊急遮断弁装置に関し、殊に、地震発生時に給水通路の破損部分から漏水することを防止するために給水配管の途中に配設される緊急遮断弁装置に関する。   The present invention relates to an emergency shut-off valve device, and more particularly, to an emergency shut-off valve device disposed in the middle of a water supply pipe in order to prevent leakage from a damaged portion of a water supply passage when an earthquake occurs.

マンション等の集合住宅に設けた貯水槽から各戸まで水を分配・供給する給水配管には、地震発生の際に給水通路を自動的に遮断して下流側の破損箇所から漏水することを防止するための緊急遮断弁装置が配設されているのが一般的である。   Water supply pipes that distribute and supply water from water storage tanks installed in apartment buildings such as condominiums, etc. to automatically shut off the water supply passages in the event of an earthquake to prevent leakage from downstream damage points In general, an emergency shut-off valve device is provided.

このような緊急遮断弁装置は、図４に示すように貯水槽１から延設された給水配管２の途中に配設されるものとして、遮断弁３０Ｂの弁体３１を所定の駆動手段で開閉可能に設けてなる緊急遮断弁装置３Ｂが周知であり、例えば特開２０００−３５６２７７号公報に記載されている図４や特開２００８−５７５６１号公報に記載されているように、別途配置した感震器４が所定レベル以上の地震を感知して作動することにより、機械式伝導具５０等のリンク手段を介し緊急遮断弁装置３Ｂの駆動手段を作動させて遮断弁３０Ｂを緊急的に遮断するようになっている。   Such an emergency shut-off valve device is provided in the middle of the water supply pipe 2 extending from the water storage tank 1 as shown in FIG. 4, and opens and closes the valve body 31 of the shut-off valve 30B by a predetermined driving means. An emergency shut-off valve device 3B that can be provided is well known. For example, as shown in FIG. 4 described in Japanese Patent Laid-Open No. 2000-356277 and Japanese Patent Laid-Open No. 2008-57561, a separately arranged feeling When the seismic device 4 senses and operates an earthquake of a predetermined level or higher, the drive means of the emergency shut-off valve device 3B is actuated via the link means such as the mechanical conductor 50 to urgently shut off the shut-off valve 30B. It is like that.

ところで、給水通路の破損箇所が修復された場合には、遮断弁による遮断を解除して早々に給水を再開させる必要があるところ、緊急遮断弁装置の駆動手段はモータやソレノイド等の電動式であるのが一般的であり、地震の影響で停電した場合には通水の再開時にその開弁動作を行えないという問題がある。   By the way, when the damaged part of the water supply passage is repaired, it is necessary to cancel the shutoff by the shutoff valve and restart the water supply as soon as possible. The drive means of the emergency shutoff valve device is an electric type such as a motor or a solenoid. In general, there is a problem that when a power failure occurs due to an earthquake, the valve opening operation cannot be performed when water flow is resumed.

一方、閉弁用の駆動手段として、弾性部材による弾性反発力を利用したり錘の重さを利用したりして電力の供給を不要としたものも知られているが、復旧時の開弁動作においてはモータ等の電動式駆動手段を使用する点で停電時の問題は同様である。   On the other hand, there are known valve closing drive means that use the elastic repulsive force of the elastic member or use the weight of the weight to eliminate the need for power supply. In operation, the problem at the time of power failure is the same in that electric drive means such as a motor is used.

そこで、前述した従来の先行技術文献においては、停電時に使用するためのバックアップ用バッテリーを設けたり、通常時から外部電源を使用せずに内蔵したバッテリーを使用したりする方式が提案されており、停電状態であっても給水の再開を可能なものとしている。一方、遮断弁の開弁動作は行われても感震器のリセットは自動で行われないため、その作業に手間と時間を要することになる。   Therefore, in the above-mentioned conventional prior art documents, a method of providing a backup battery for use in the event of a power failure or using a built-in battery without using an external power supply from normal times has been proposed, The water supply can be resumed even in a power outage. On the other hand, since the seismoscope is not automatically reset even if the shut-off valve is opened, the work takes time and effort.

また、集合住宅では各戸への配管が損傷する場合も考えられるので経路毎に緊急遮断弁装置を配設することも想定することができ、このような場合には安価でメンテナンスの手間が少ないものが好適であるところ、前述したバッテリー内蔵式の装置は、バッテリー内蔵の分コスト高であり、且つ、メンテナンスの手間もかかりやすいという難点がある。   Also, in condominiums, the piping to each house may be damaged, so it is possible to assume that an emergency shut-off valve device is installed for each route. In such a case, it is inexpensive and requires little maintenance. However, the above-described battery built-in type apparatus has the disadvantages that the cost is high due to the built-in battery and that maintenance work is likely to be required.

特開２０００−３５６２７７号公報JP 2000-356277 A 特開２００８−５７５６１号公報JP 2008-57561 A

本発明は、上記のような問題を解決しようとするものであり、緊急遮断弁装置について、停電時でも通水の再開が容易に行えることに加え、導入コストが低廉でメンテナンスの手間の少ないものとすることを課題とする。   The present invention is intended to solve the above-mentioned problems, and the emergency shut-off valve device can be easily restarted even in the event of a power failure, and has a low introduction cost and a low maintenance effort. The problem is to do.

そこで、本発明は、弁体に突設された駆動軸の回転作動により弁の開閉動作を行う遮断弁の前記駆動軸に閉弁方向の付勢力を付与する機械式の駆動手段と、前記駆動手段の付勢力に抗して前記遮断弁の開弁状態を維持するブレーキ手段と、前記ブレーキ手段に備えられたブレーキを解除して前記遮断弁を閉弁させるブレーキ解除手段とを備えた給水配管又は貯水槽に配置する機械式遮断弁に、所定レベル以上の地震の揺れを検出して前記遮断弁のブレーキ解除手段を作動させる機械式感震器を一体に設け、地震の発生により、前記機械式感震器が作動して、前記ブレーキ解除手段を作動させることで前記ブレーキが解除されて前記駆動手段により前記遮断弁を閉弁させ、通水を自動的に遮断することにより前記課題を解決した。   Accordingly, the present invention provides a mechanical drive means for applying a biasing force in the valve closing direction to the drive shaft of the shut-off valve that opens and closes the valve by the rotation operation of the drive shaft protruding from the valve body, and the drive Water supply piping comprising brake means for maintaining the shut-off valve open state against the urging force of the means, and brake release means for releasing the brake provided in the brake means and closing the shut-off valve Alternatively, the mechanical shut-off valve disposed in the water tank is integrally provided with a mechanical seismic device that detects the shaking of the earthquake exceeding a predetermined level and operates the brake release means of the shut-off valve. The above-mentioned problem is solved by activating the type seismic device, operating the brake release means to release the brake, closing the shut-off valve by the drive means, and automatically shutting off water flow. did.

また、前記遮断弁の駆動手段が、前記駆動軸とこの駆動軸を回転駆動させるゼンマイと前記駆動軸の回動を前記遮断弁の開閉動作に変換する変換機構を有して、前記ゼンマイが圧縮方向に捲かれた状態で前記遮断弁を閉弁方向に付勢するとともに、前記遮断弁が閉弁した状態で前記駆動軸の軸端または前記変換機構の一部に連結されたハンドル部材を手動で回すことにより、前記ゼンマイを捲き戻しながら前記遮断弁を開弁方向に動作させ、初期状態の開弁位置で前記ブレーキ手段により固定されることによりリセットが完了することが好ましい。   The shut-off valve drive means includes a drive shaft, a spring that rotationally drives the drive shaft, and a conversion mechanism that converts the rotation of the drive shaft into an opening / closing operation of the shut-off valve. The handle valve connected to the shaft end of the drive shaft or a part of the conversion mechanism is manually operated while the shut-off valve is closed while the shut-off valve is closed. It is preferable that the resetting is completed by rotating the spring by operating the shut-off valve in the valve opening direction while turning back the mainspring and fixing it by the brake means at the valve opening position in the initial state.

そして、前記遮断弁は、機械式バタフライ弁または、機械式ボール弁のような弁体の回転動作により開閉動作を行うタイプとすることが好ましい。   The shut-off valve is preferably a type that opens and closes by a rotating operation of a valve body such as a mechanical butterfly valve or a mechanical ball valve.

更に、前記ハンドル部材は、装置本体に対し着脱可能なハンドルである機械式緊急遮断弁装置を提供する。   Furthermore, the handle member provides a mechanical emergency shut-off valve device that is a handle that can be attached to and detached from the apparatus main body.

また、前記ハンドルは、装置外部まで延設された前記駆動軸の一方の端部側に基端側を連結することにより装着される。   The handle is mounted by connecting a base end side to one end side of the drive shaft extending to the outside of the apparatus.

ブレーキ解除手段は、機械式の前記感震器から延設された機械式伝導具の先端側における突出部の突出動作に連動して前記ブレーキ手段によるブレーキを解除し、且つ、手動によるリセット動作で前記突出部を押し戻すことができる。   The brake release means releases the brake by the brake means in conjunction with the protruding operation of the protruding portion on the tip side of the mechanical conductor extended from the mechanical seismic device, and is a manual resetting operation. The protrusion can be pushed back.

更にまた、前記駆動軸にはウオームギヤが設けられており、前記遮断弁の弁体から前記駆動軸に対し直角方向に延設された弁軸の端部側に設けたウオームホイールギヤと噛合して前記遮断弁を動作させることにより、大きなゼンマイではなくとも比較的大きな閉弁方向の駆動力を確保することができる。   Furthermore, a worm gear is provided on the drive shaft, and meshes with a worm wheel gear provided on the end side of the valve shaft extending in a direction perpendicular to the drive shaft from the valve body of the shut-off valve. By operating the shut-off valve, it is possible to ensure a relatively large driving force in the valve closing direction without using a large spring.

このように、緊急遮断弁装置で閉弁動作を行うための駆動手段にゼンマイを使用したことで、電動式の駆動手段と比べてコストを低廉に抑えられることに加え、通水再開時に手動で遮断弁を開弁させながらゼンマイを最初の状態に捲き戻す方式としたことにより、バッテリーを内蔵する場合と比べて導入コストが大幅に削減されるとともに、リセットの手間及びメンテナンスの手間を少なく抑えることができる。   In this way, the use of the spring as the driving means for performing the valve closing operation in the emergency shut-off valve device enables the cost to be kept lower than that of the electric driving means, and also allows manual operation when restarting the water flow. By adopting a system that returns the mainspring to the initial state while opening the shut-off valve, the introduction cost is greatly reduced compared to the case where a battery is built in, and the effort of resetting and maintenance is reduced. Can do.

また、この緊急遮断弁装置において、そのハンドル部材は装置本体に対し着脱可能なハンドルとすれば、これを通水再開時のみ装着して使用することで、通常時は遮断弁の無用な開閉動作を回避しやすいものとなる。この場合、そのハンドルは、装置の外部まで延設された駆動軸の一方の端部側に基端側を連結することにより装着されることを特徴としたものとすれば、手動にてゼンマイをダイレクトに捲き戻すことができる。   Also, in this emergency shut-off valve device, if the handle member is a handle that can be attached to and detached from the main body of the device, it can be used only when resuming the water flow. It will be easy to avoid. In this case, if the handle is attached by connecting the base end side to one end side of the drive shaft extending to the outside of the device, the mainspring is manually operated. You can hit back directly.

さらに、上述した緊急遮断弁装置において、そのブレーキ解除手段として、別の箇所に設置された、または一体に設けた機械式の感震器から延設された機械式伝導具先端側の突出部の突出動作に連動してブレーキ手段によるブレーキを解除し、且つ、手動によるリセット動作で機械式伝導具の突出部を押し戻すものとされていることを特徴としたものとすれば、全体としても電源手段を要さずに停電時における確実な作動を実現しやすいことに加え、手動でゼンマイを巻き戻す動作で機械式伝導具を介して感震器のリセットも行われるものとすればより操作が簡単である。   Furthermore, in the emergency shut-off valve device described above, as a brake release means, a protruding portion on the front side of the mechanical conductor installed at another location or extended from a mechanical shock absorber provided integrally therewith is provided. If it is characterized in that the brake by the brake means is released in conjunction with the protrusion operation, and the protrusion of the mechanical conductor is pushed back by a manual reset operation, the power supply means as a whole It is easier to achieve reliable operation at the time of a power failure without the need for power, and it is easier to operate if the seismoscope is reset via a mechanical conductor by manually unwinding the mainspring. It is.

閉弁動作を行うための駆動手段にゼンマイを使用するとともに通水再開時に手動で遮断弁を開弁させながらゼンマイを捲き戻して初期状態にする方式とした本発明によると、停電時でも通水の再開が容易に行えることに加え、導入コストが低廉でリセット作業及びメンテナンスの手間の少ないものとすることができる。   According to the present invention, the spring is used as a driving means for performing the valve closing operation and the spring is turned back to the initial state while the shut-off valve is manually opened when the water flow is resumed. In addition to facilitating restarting, the introduction cost is low, and resetting and maintenance can be reduced.

本発明における緊急遮断弁装置についての実施の形態の正面図である。It is a front view of an embodiment about an emergency shut-off valve device in the present invention. 図１に示した実施の形態の本体部分の部分斜視図である。It is a fragmentary perspective view of the main-body part of embodiment shown in FIG. 図１に示した実施の形態の本体部分の横断面図である。It is a cross-sectional view of the main-body part of embodiment shown in FIG. 従来例における緊急遮断弁装置の配設状態を示す配置図である。FIG. 10 is a layout diagram illustrating a state of arrangement of an emergency shutoff valve device in a conventional example.

以下に、図面を参照しながら本発明を実施するための形態を説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

図１乃至図３は、本実施の形態の緊急遮断弁装置３Ａの正面図、本体部分の部分斜視図および本体部分の横断面図を示している。この緊急遮断弁装置３Ａは、図４に示した従来の緊急遮断弁装置３Ｂと同様に、貯水槽１から続く給水配管２の途中に配置した遮断弁３０Ａを地震発生時に緊急的に閉弁してその下流側で漏水を生じないようにするための装置であり、図４に示した緊急遮断弁装置３Ｂは感振器４が別の場所に設置された別体であるが、本実施の形態では一体に設置した機械式の感震器４が所定レベル以上の地震を感知することで、これから延設された機械式伝導具５０先端側の突出部５０ａがブレーキ解除部３６３を作動させてブレーキ部３６のブレーキを解除し、後述する駆動部３５が作動して遮断弁３０Ａを緊急的に閉弁させるようになっている。   1 to 3 show a front view, a partial perspective view of a main body portion, and a cross-sectional view of the main body portion of an emergency shut-off valve device 3A of the present embodiment. This emergency shut-off valve device 3A, like the conventional emergency shut-off valve device 3B shown in FIG. 4, urgently closes the shut-off valve 30A disposed in the middle of the water supply pipe 2 continuing from the water tank 1 when an earthquake occurs. The emergency shut-off valve device 3B shown in FIG. 4 is a separate body in which the vibration absorber 4 is installed in another place. In the embodiment, when the mechanical shock absorber 4 installed integrally senses an earthquake of a predetermined level or higher, the protruding portion 50a on the front end side of the mechanical conductor 50 extended from this activates the brake release portion 363. The brake of the brake part 36 is released, and a drive part 35 described later is operated to urgently close the shutoff valve 30A.

本実施の形態は、感震器４と緊急遮断弁３Ａとを一体としたものであり、屋上等の限られたスペースの中で感震器を別途設置するスペースが取れない場合に有効である。更に本実施例では、感震器４と緊急遮断弁３Ａとを一体としたことにより、設置スペースや繁雑な取付作業などの面で有利である反面、図４に示したように感震器４が床面に単独で設置されている場合比べ、正確な地震による揺れ感知が検出できない場合もあるが、例えば弾性体のような緩衝部材を挟持させたり、作動する揺れを補正したりすることで対応することができる（図示せず）。   This embodiment integrates the seismic device 4 and the emergency shut-off valve 3A, and is effective when a space for separately installing the seismic device cannot be obtained in a limited space such as a rooftop. . Furthermore, in this embodiment, the seismic device 4 and the emergency shut-off valve 3A are integrated, which is advantageous in terms of installation space and complicated installation work, but as shown in FIG. Compared to the case where the machine is installed alone on the floor, there may be cases where it is not possible to detect accurate shaking due to earthquakes.For example, by holding a cushioning member such as an elastic body or correcting the shaking It can respond (not shown).

本実施例においては、感震器４と緊急遮断弁３Ａとは、機械式伝導具５０により緊急遮断弁３Ａの内部で連結されている構造となっているが、前記感震器と前記緊急遮断弁との連結構造はこれに限られるものではなく、地震の発生で前記感震器が作動した場合に、ブレーキ解除部３６３を作動させてブレーキ部３６のブレーキを解除し、駆動部３５が作動して遮断弁３０Ａを緊急的に閉弁可能とする機械構造を有するものであればよい。   In this embodiment, the seismic device 4 and the emergency shut-off valve 3A are connected to each other inside the emergency shut-off valve 3A by a mechanical conductor 50. The connection structure with the valve is not limited to this, and when the seismic device is activated due to the occurrence of an earthquake, the brake release unit 363 is operated to release the brake of the brake unit 36 and the drive unit 35 is operated. Thus, it is only necessary to have a mechanical structure that enables the shutoff valve 30A to be urgently closed.

その遮断弁３０Ａの弁体３１を閉弁方向に動作させる駆動部３５は、横方向に渡した駆動軸３５１と、その一端側で周方向渦巻き状に捲回して設けたゼンマイ３５０と、駆動軸３５１のほぼ中央位置に配置されたウオームギヤ３５２と、弁体３１から駆動軸３５１に対し直角方向に延設した弁軸３２の端部側に傘状に設けられてウオームギヤ３５２に噛合しているウオームホイールギヤ３５３とからなり、ゼンマイ３５０が圧縮方向に捲かれた状態で遮断弁３０Ａを閉弁方向に付勢しており、その遮断弁３０Ａの閉弁動作に電力の供給を要しないものとなっている。   The drive unit 35 that operates the valve element 31 of the shutoff valve 30A in the valve closing direction includes a drive shaft 351 that extends in the lateral direction, a spring 350 that is wound in a circumferential spiral shape at one end thereof, and a drive shaft A worm gear 352 disposed substantially at the center of the shaft 351, and a worm gear which is provided in an umbrella shape on the end side of the valve shaft 32 extending in a direction perpendicular to the drive shaft 351 from the valve body 31 and meshes with the worm gear 352. The shut-off valve 30A is urged in the closing direction with the mainspring 350 being squeezed in the compression direction, and power supply is not required for the closing operation of the shut-off valve 30A. ing.

駆動部３５に付設したブレーキ部３６は、駆動軸３５１に設けた歯車３５４に一部を噛合している複数の歯車からなるギヤ３６０、ギヤ３６０にホイール軸３６１ａを介し接続して慣性力を発揮するフライホイール３６１、ホイール軸３６１ａの回動をブレーキライニング、ブレーキアーマチェア等の摩擦力で停止させるブレーキ機構３６２を有してなり、通常の通水時にそのブレーキ作用でゼンマイ３５０の付勢力に抗して駆動軸３５１の回動を停止させて遮断弁３０Ａの開弁状態を維持している。   The brake part 36 attached to the drive part 35 is connected to a gear 360 composed of a plurality of gears partially meshed with a gear 354 provided on the drive shaft 351, and is connected to the gear 360 via a wheel shaft 361a to exert inertial force. And a brake mechanism 362 for stopping the rotation of the flywheel 361 and the wheel shaft 361a by a frictional force such as a brake lining and a brake armor chair, and resists the urging force of the mainspring 350 by the brake action during normal water flow. Thus, the rotation of the drive shaft 351 is stopped to maintain the shut-off valve 30A in the open state.

そして、感震器４が所定レベル以上の地震を検知すると、機械式伝導具５０先端側の突出部５０ａがブレーキ機構３６２に付設したブレーキ解除部３６３の解除レバー３６３ａを押すことにより、ブレーキ機構３６２によるブレーキを解除させてゼンマイ３５０による付勢力が開放され、駆動部３５が遮断弁３０Ａを閉弁方向に作動させる。   When the seismic device 4 detects an earthquake of a predetermined level or higher, the protrusion 50a on the distal end side of the mechanical conductor 50 pushes the release lever 363a of the brake release portion 363 attached to the brake mechanism 362, thereby causing the brake mechanism 362. The brake by is released, the urging force by the mainspring 350 is released, and the drive unit 35 operates the shutoff valve 30A in the valve closing direction.

尚、このようにウオームギヤ３５２が弁軸３２端部側のウオームホイールギヤ３５３に噛合して駆動軸３５１の回動を弁体３１の開閉動作に変換する構成としたことにより、駆動軸３５１の一端に設けたゼンマイ３５０が比較的小さく低出力のものであっても、弁軸３２において比較的大きなトルクを発生させることができるため、遮断弁３０Ａの閉弁動作をスムースに行いやすいものとなっている。   The worm gear 352 meshes with the worm wheel gear 353 on the end side of the valve shaft 32 in this way to convert the rotation of the drive shaft 351 into the opening / closing operation of the valve body 31, so that one end of the drive shaft 351 is provided. Even if the mainspring 350 provided on the valve body is relatively small and has a low output, a relatively large torque can be generated in the valve shaft 32, so that the valve closing operation of the shutoff valve 30A can be performed smoothly. Yes.

一方、駆動軸３５１の他端側は先端部３５１ａが本体外部に露出しており、この先端部３５１ａは外周面の一部が軸線方向に切り欠かれた形状とされ、駆動軸３５１の軸線方向に対しアームの向きを直角にしたクランク形のハンドル３８を、その基端側の係合孔３８ａに先端部３５１ａを嵌挿して装着することにより、駆動軸３５１に連結される。   On the other hand, the distal end portion 351a is exposed to the outside of the main body on the other end side of the drive shaft 351, and the distal end portion 351a has a shape in which a part of the outer peripheral surface is notched in the axial direction. On the other hand, a crank-shaped handle 38 whose arm is oriented at a right angle is connected to the drive shaft 351 by fitting the distal end portion 351a into the engagement hole 38a on the base end side.

したがって、地震で遮断弁３０Ａを閉弁した後の通水再開時に、最初に感震器４のリセット釦を操作してリセット機構（図示せず）を作動させて機械式伝導具５０の管体を挿通したワイヤを引き戻すことにより機械式伝導具５０先端側の突出部５０ａをブレーキ解除部３６３の解除レバー３６３ａから退避させた状態として、ブレーキ機構３６２によるブレーキを復帰させた状態で、ハンドル３８を駆動軸３５１に装着して手動で回すことで、これを開弁方向に回しながらゼンマイ３５０を巻き戻すことができ、電源手段を要さずにしかもコストの低廉な簡易な構成で初期状態にリセットが可能である。   Accordingly, when water flow is resumed after the shutoff valve 30A is closed due to an earthquake, the reset button (not shown) is operated by first operating the reset button of the seismic sensor 4, and the tubular body of the mechanical conductor 50. By pulling back the wire that has been inserted, the protrusion 50a on the distal end side of the mechanical conductor 50 is retracted from the release lever 363a of the brake release portion 363, and the handle 38 is released with the brake mechanism 362 restored. By installing it on the drive shaft 351 and turning it manually, the mainspring 350 can be rewound while turning it in the valve opening direction, and it is reset to the initial state with a simple and low-cost configuration without the need for power supply means. Is possible.

また、このハンドル３８は、駆動軸３５１に対し着脱自在とされていることから、不使用時にこれを外しておくことで遮断弁３０が無用に動作してしまう事態を回避することができる。   Further, since the handle 38 is detachable from the drive shaft 351, it is possible to avoid a situation in which the shutoff valve 30 operates unnecessarily by removing the handle 38 when not in use.

さらに、前記リセット操作では始めに感震器４をリセット操作して機械式伝導具５０の先端側の突出部５０ａをブレーキ解除部３６３の解除レバー３６３ａから退避させた状態として、ブレーキ機構３６２によるブレーキを復帰させた状態で、ハンドル３８を駆動軸３５１に装着して手動で回す場合を示したが、例えば感震器４のリセット機構を機械式伝導具に押し戻すことにより自動的にリセット可能な機構とすることにすれば（図示せず）、前述した通水再開時のハンドル操作により、ブレーキ解除部３６３の解除レバー３６３ａが機械式伝導具５０先端側で突出している突出部５０ａを押し戻すことにより機械式の感震器４を通常時の状態にリセットすることもできる。   Further, in the reset operation, first, the shock absorber 4 is reset so that the protruding portion 50a on the front end side of the mechanical conductor 50 is retracted from the release lever 363a of the brake release portion 363. The case where the handle 38 is attached to the drive shaft 351 and manually rotated while the state is restored is shown. For example, a mechanism that can be automatically reset by pushing the reset mechanism of the seismic device 4 back to the mechanical conductor If this is done (not shown), the release lever 363a of the brake release portion 363 pushes back the protruding portion 50a protruding on the distal end side of the mechanical conductor 50 by the steering operation at the time of restarting the water flow described above. The mechanical seismic device 4 can also be reset to the normal state.

このように、地震により緊急的に通水を遮断した後で通水を再開させる場合において、極めて簡易な手順で遮断弁３０Ａを開弁位置に戻しながらゼンマイ３５０を巻き戻してリセットすることができ、斯かる緊急遮断弁装置３Ａが集合住宅の各戸毎に複数配設されていても、比較的短時間で復旧作業を完了することができる。   In this way, when the water flow is resumed after being cut off urgently due to an earthquake, the mainspring 350 can be rewound and reset while the shut-off valve 30A is returned to the open position by an extremely simple procedure. Even if a plurality of such emergency shut-off valve devices 3A are provided for each house of the apartment house, the restoration work can be completed in a relatively short time.

さらに、通水を再開させる動力源にバッテリーを用いない手動式であることから、装置単体として比較的安価であり、設置数が多くても導入を比較的低廉に抑えることができ、且つ、バッテリーを内蔵した装置におけるような定期的な電圧チェック等の作業を要さないことから、メンテナンスの手間も比較的少ないものとなる。   Furthermore, since it is a manual type that does not use a battery as a power source for resuming water flow, it is relatively inexpensive as a single unit, and can be introduced at a relatively low cost even when the number of installations is large. Since there is no need for periodic voltage check or the like as in the device incorporating the device, the maintenance labor is relatively small.

以上、述べたように、緊急遮断弁装置について、本発明により停電時でも通水の再開が容易に行えることに加え、導入コストが低廉でリセット作業及びメンテナンスの手間が少なくすることができる。   As described above, the emergency shut-off valve device according to the present invention can easily restart the water flow even in the event of a power failure, and the introduction cost is low and the labor for resetting and maintenance can be reduced.

尚、本実施の形態ではハンドル３８としてクランク形としたので操作しやすいが、特に限定されるものでなく平形のものであってもよく（図示せず）、この場合には少ないスペースで保管することができるという利点がある。   In this embodiment, the handle 38 has a crank shape and is easy to operate. However, the handle 38 is not particularly limited and may be a flat shape (not shown). In this case, the handle 38 is stored in a small space. There is an advantage that you can.

また、本実施の形態では機械式バタフライ弁を用いて実施しているが、バタフライ弁以外でも弁体の回転作動により開閉動作を行う機械式の遮断弁構造を有しているボール弁を用いても実施することが出来る。   In this embodiment, a mechanical butterfly valve is used. However, a ball valve having a mechanical shut-off valve structure that opens and closes by rotating the valve body other than the butterfly valve is used. Can also be implemented.

２ 給水配管、３Ａ 緊急遮断弁装置、４ 感震器、３０Ａ 遮断弁、３１ 弁体、３５ 駆動部、３６ ブレーキ部、３８ ハンドル、５０ 機械式伝導具、５０ａ 突出部、３５０ ゼンマイ、３５１ 駆動軸、３５２ ウオームギヤ、３５３ ウオームホイールギヤ、３６３ ブレーキ解除部、３６３ａ 解除レバー   2 Water supply piping, 3A emergency shutoff valve device, 4 seismic detector, 30A shutoff valve, 31 valve body, 35 drive part, 36 brake part, 38 handle, 50 mechanical conductor, 50a protruding part, 350 spring, 351 drive shaft , 352 worm gear, 353 worm wheel gear, 363 brake release part, 363a release lever

Claims (7)

弁体に突設された駆動軸の回転作動により弁の開閉動作を行う遮断弁の前記駆動軸に閉弁方向の付勢力を付与する機械式の駆動手段と、前記駆動手段の付勢力に抗して前記遮断弁の開弁状態を維持するブレーキ手段と、前記ブレーキ手段に備えられたブレーキを解除して前記遮断弁を閉弁させるブレーキ解除手段とを備えた給水配管又は貯水槽に配置する機械式遮断弁に、所定レベル以上の地震の揺れを検出して前記遮断弁のブレーキ解除手段を作動させる機械式感震器を一体に設け、地震の発生により、前記機械式感震器が作動して、前記ブレーキ解除手段を作動させることで前記ブレーキが解除されて前記駆動手段により前記遮断弁を閉弁させ、通水を自動的に遮断することを特徴とする緊急遮断弁装置。   A mechanical drive means for applying an urging force in the valve closing direction to the drive shaft of the shut-off valve that opens and closes the valve by rotating the drive shaft protruding from the valve body; The brake means for maintaining the open state of the shut-off valve and the brake release means for releasing the brake provided in the brake means and closing the shut-off valve are arranged in a water supply pipe or water storage tank. The mechanical shut-off valve is integrated with a mechanical shaker that activates the brake release means of the shut-off valve by detecting the shaking of the earthquake above a predetermined level. When the earthquake occurs, the mechanical shaker is activated. Then, the brake is released by operating the brake release means, the shut-off valve is closed by the drive means, and the water flow is automatically shut off. 前記遮断弁の駆動手段が、前記駆動軸とこの駆動軸を回転駆動させるゼンマイと前記駆動軸の回動を前記遮断弁の開閉動作に変換する変換機構を有して、前記ゼンマイが圧縮方向に捲かれた状態で前記遮断弁を閉弁方向に付勢するとともに、前記遮断弁が閉弁した状態で前記駆動軸の軸端または前記変換機構の一部に連結されたハンドル部材を手動で回すことにより、前記ゼンマイを捲き戻しながら前記遮断弁を開弁方向に動作させ、初期状態の開弁位置で前記ブレーキ手段により固定されることによりリセットが完了することを特徴とする請求項１に記載の緊急遮断弁装置。   The shut-off valve drive means has a drive shaft, a spring that rotationally drives the drive shaft, and a conversion mechanism that converts the rotation of the drive shaft into an opening / closing operation of the shut-off valve, and the spring in the compression direction. The shut-off valve is urged in the closing direction while being turned, and the handle member connected to the shaft end of the drive shaft or a part of the conversion mechanism is manually turned with the shut-off valve closed. Accordingly, the shut-off valve is operated in the valve opening direction while the spring is rolled back, and the reset is completed by being fixed by the brake means at the valve opening position in the initial state. Emergency shut-off valve device. 前記遮断弁が、機械式バタフライ弁または、機械式ボール弁であることを特徴とする請求項１または２に記載の緊急遮断弁装置。   The emergency shut-off valve device according to claim 1 or 2, wherein the shut-off valve is a mechanical butterfly valve or a mechanical ball valve. 前記ハンドル部材は、装置本体に対し着脱可能なハンドルであることを特徴とする請求項１，２または３に記載した緊急遮断弁装置。   The emergency shut-off valve device according to claim 1, 2 or 3, wherein the handle member is a handle that can be attached to and detached from the apparatus main body. 前記ハンドルは、装置外部まで延設された前記駆動軸の一方の端部側に基端側を連結することにより装着されることを特徴とする請求項１，２，３または４に記載した緊急遮断弁装置。   5. The emergency according to claim 1, 2, 3 or 4, wherein the handle is attached by connecting a base end side to one end side of the drive shaft extending to the outside of the apparatus. Shut-off valve device. ブレーキ解除手段は、機械式の前記感震器から延設された機械式伝導具の先端側における突出部の突出動作に連動して前記ブレーキ手段によるブレーキを解除し、且つ、手動によるリセット動作で前記突出部を押し戻すものであることを特徴とする請求項１，２，３，４または５に記載した緊急遮断弁装置。   The brake release means releases the brake by the brake means in conjunction with the protruding operation of the protruding portion on the tip side of the mechanical conductor extended from the mechanical seismic device, and is a manual resetting operation. The emergency shut-off valve device according to claim 1, 2, 3, 4, or 5, wherein the protruding portion is pushed back. 前記駆動軸にはウオームギヤが設けられており、前記遮断弁の弁体から前記駆動軸に対し直角方向に延設された弁軸の端部側に設けたウオームホイールギヤと噛合して前記遮断弁を動作させることを特徴とする請求項１，２，３，４，５または６に記載した緊急遮断弁装置。   The drive shaft is provided with a worm gear, and meshes with a worm wheel gear provided on an end portion side of the valve shaft extending in a direction perpendicular to the drive shaft from the valve body of the shut-off valve. The emergency shut-off valve device according to claim 1, 2, 3, 4, 5 or 6.
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CN108591588B (en) * 2018-07-26 2020-04-03 中国地震局工程力学研究所 Earthquake safety valve assembly and gas system
KR102623023B1 (en) * 2021-12-13 2024-01-11 주식회사 현대케피코 Pressure adjustment valve assembly for hydrogen storage tank

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