JP3167428U - Structure for preventing leakage of shut-off valve - Google Patents

Structure for preventing leakage of shut-off valve Download PDF

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JP3167428U
JP3167428U JP2011000670U JP2011000670U JP3167428U JP 3167428 U JP3167428 U JP 3167428U JP 2011000670 U JP2011000670 U JP 2011000670U JP 2011000670 U JP2011000670 U JP 2011000670U JP 3167428 U JP3167428 U JP 3167428U
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valve
shut
prevention structure
leakage prevention
double
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太思 牧野
太思 牧野
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Ｔａｃｏ株式会社
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Abstract

【課題】従来の二重遮断弁構造における漏洩の可能性を低減させ、部品点数が増加せず、その部品管理も容易な遮断便弁の漏洩防止構造を提供する。【解決手段】管路に直列にして配設される第１遮断弁２と第２遮断弁３とにおいて、前記それぞれの遮断弁の弁体を流路に沿って二重弁体２ｂ，２ｃ，３ｂ，３ｃとし、全体として四重弁体を具備してなる遮断弁の漏洩防止構造とするものである。【選択図】図１An object of the present invention is to provide a leakage prevention structure for a shutoff valve which reduces the possibility of leakage in a conventional double shutoff valve structure, does not increase the number of parts, and facilitates parts management. SOLUTION: In a first shut-off valve 2 and a second shut-off valve 3 arranged in series in a pipeline, the valve bodies of the respective shut-off valves are double valve bodies 2b, 2c, 3b along a flow path. , 3c to provide a leakage prevention structure for a shut-off valve having a quadruple valve body as a whole. [Selection diagram] Fig. 1

Description

本考案は、遮断弁の漏洩防止構造に関するものである。   The present invention relates to a leakage prevention structure for a shut-off valve.

従来、例えば、ガス配管に使用される二重遮断弁の漏洩防止構造は、図２に示すように、第１遮断弁１１と第２遮断弁１２とを直列に配置したものが知られている（特許文献１、２参照）。前記遮断弁１１，１２は、ソレノイド１１ａ，１２ａと弁体１１ｂ，１２ｂ
との組み合わせでなるものである。ガスは、図２の左側から供給され、右側へと配給される。途中の弁室１３から図視下ａ方向にガスの一部が導出されて漏洩検出装置（図示せず）へ供給される。 2. Description of the Related Art Conventionally, for example, as shown in FIG. 2, a double shut-off valve leakage prevention structure used for gas piping is known in which a first shut-off valve 11 and a second shut-off valve 12 are arranged in series. (See Patent Documents 1 and 2). The shut-off valves 11 and 12 include solenoids 11a and 12a and valve bodies 11b and 12b.
It is a combination of and. The gas is supplied from the left side of FIG. 2 and distributed to the right side. A part of the gas is led out from the valve chamber 13 in the middle in the direction a in the figure and supplied to a leak detection device (not shown).

特開平０２−９１９３２号公報Japanese Patent Laid-Open No. 02-91932 特開２００６−１７６５７号公報JP 2006-17657 A

しかし、従来の二重遮断弁の漏洩防止構造は、例えば、前記第２遮断弁１２が先に漏洩又は故障し、その後に、前記第１遮断弁１１が漏洩又は故障した場合には、漏洩検出装置でガス漏れを検出して緊急停止信号等を施しても、前記第２遮断弁１２のアウト側にガスが漏洩してしまう、という課題がある。本考案に係る遮断弁の漏洩防止構造は、このような課題を解決するために提案されたものである。   However, the conventional double shut-off valve leakage prevention structure is configured such that, for example, when the second shut-off valve 12 leaks or fails first, and then the first shut-off valve 11 leaks or malfunctions, leak detection is performed. Even if the device detects a gas leak and gives an emergency stop signal or the like, there is a problem that the gas leaks to the out side of the second shutoff valve 12. The leakage prevention structure for a shut-off valve according to the present invention has been proposed in order to solve such problems.

本考案に係る遮断弁の漏洩防止構造の上記課題を解決して目的を達成するための要旨は、管路に直列にして配設される第１遮断弁と第２遮断弁とにおいて、前記それぞれの遮断弁の弁体を流路に沿って二重弁体とし、全体として四重弁体を具備してなることである。
また、前記各二重弁体は、それぞれ一体成形されてなることを含むものである。 SUMMARY OF THE INVENTION The gist of the invention for solving the above-described problem of the leakage prevention structure for a shutoff valve according to the present invention is to provide a first shutoff valve and a second shutoff valve that are arranged in series in a pipeline. The valve body of the shut-off valve is a double valve body along the flow path, and a quadruple valve body as a whole is provided.
Each of the double valve bodies is integrally formed.

本考案の遮断弁の漏洩防止構造によれば、管路に直列に四重に遮断弁を設けたことになるので、漏洩のおそれが低減されるものである。また、第１遮断弁と第２遮断弁とにおける二重弁体を、一体成形するので部品点数が増加せず、その部品管理も容易となる。   According to the leakage prevention structure for a shut-off valve of the present invention, the shut-off valves are provided in quadruple in series with the pipeline, so that the risk of leakage is reduced. Moreover, since the double valve body in the first shut-off valve and the second shut-off valve is integrally formed, the number of parts does not increase, and parts management becomes easy.

本考案に係る遮断弁の漏洩防止構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the leakage prevention structure of the shut-off valve which concerns on this invention. 従来例に係る遮断弁の漏洩防止構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the leakage prevention structure of the cutoff valve which concerns on a prior art example.

本考案に係る遮断弁の漏洩防止構造は、四重の遮断弁にするものである。   The leakage prevention structure for a shut-off valve according to the present invention is a quadruple shut-off valve.

本考案に係る遮断弁１の漏洩防止構造は、図１に示すように、ガス等の気体用の管路４において漏洩防止のために、当該管路４に直列にして配設される第１遮断弁２と第２遮断弁３とにおいて、前記それぞれの遮断弁２，３の弁体Ａ，Ｂを流路に沿って直列に配設した二重弁体２ｂ，２ｃ，３ｂ，３ｃに形成し、全体として直列に配列した四重弁体を具備してなることである。   As shown in FIG. 1, the leakage prevention structure of the shutoff valve 1 according to the present invention is a first arrangement arranged in series with a pipeline 4 for preventing leakage in a pipeline 4 for gas such as gas. In the shut-off valve 2 and the second shut-off valve 3, the valve bodies A and B of the respective shut-off valves 2 and 3 are formed into double valve bodies 2b, 2c, 3b and 3c arranged in series along the flow path. In other words, the quadruple valve elements are arranged in series as a whole.

また、前記各二重弁体２ｂ，２ｃと、二重弁体３ｂ，３ｃとは、それぞれ一体成形されてなることを含むものである。図１中の符号２ａ，３ａはソレノイドを示し、また、符号２ｄ，３ｄは、それぞれシール用のゴムパッキンを示している。   Each of the double valve bodies 2b, 2c and the double valve bodies 3b, 3c includes being integrally formed. Reference numerals 2a and 3a in FIG. 1 indicate solenoids, and reference numerals 2d and 3d indicate rubber packings for sealing, respectively.

このように、二重弁体２ｂ，２ｃと二重弁体３ｂ，３ｃとを有する第１遮断弁２と第２遮断弁３とを、管路４に直列に配設することで、四重遮断弁となってガス漏洩のリスクを軽減できるものである。   In this way, by arranging the first shut-off valve 2 and the second shut-off valve 3 having the double valve bodies 2b and 2c and the double valve bodies 3b and 3c in series with the pipe line 4, the quadruple shut-off valve is provided. Thus, the risk of gas leakage can be reduced.

なお、前記二重弁体２ｂ，２ｃおよび二重弁体３ｂ，３ｃを、Ｏリング式バルブの電磁弁にした場合で説明したが、これに限ることなく、パック式バルブ、ダイアフラム式バルブ、ベローバルブ等においても適用でき、開閉操作は、手動式であっても良く、そのほか、略９０度回転させて開閉するハンドル式弁体であっても良い。   The double valve bodies 2b and 2c and the double valve bodies 3b and 3c have been described as O-ring valve solenoid valves. However, the present invention is not limited to this, and in pack type valves, diaphragm type valves, bellows valves, etc. The opening / closing operation may be a manual type, or may be a handle type valve element that is rotated approximately 90 degrees to open / close.

本考案に係る遮断弁の漏洩防止構造は、気体用管路においてその安全性を高めるものに広く適用できるものである。   The leakage prevention structure for a shut-off valve according to the present invention can be widely applied to a gas conduit that improves its safety.

１ 遮断弁の漏洩防止構造、
２ 遮断弁、 ２ａ ソレノイド、
２ｂ，２ｃ 二重弁体、 ２ｄ ゴムパッキン、
３ 遮断弁、 ３ａ ソレノイド、
３ｂ，３ｃ 二重弁体、 ３ｄ ゴムパッキン、
４ 管路、
１１ 第１弁体、
１２ 第２弁体、
１３ 弁室。 1 Leakage prevention structure of shut-off valve,
2 shut-off valve, 2a solenoid,
2b, 2c double valve body, 2d rubber packing,
3 shut-off valve, 3a solenoid,
3b, 3c double valve body, 3d rubber packing,
4 pipelines,
11 First valve body,
12 Second valve body,
13 Valve chamber.

Claims (2)

管路に直列にして配設される第１遮断弁と第２遮断弁とにおいて、
前記それぞれの遮断弁の弁体を流路に沿って二重弁体とし、全体として四重弁体を具備してなること、
を特徴とする遮断弁の漏洩防止構造。 In the first shut-off valve and the second shut-off valve arranged in series with the pipeline,
The valve body of each shutoff valve is a double valve body along the flow path, and comprises a quadruple valve body as a whole,
The leakage prevention structure of the shut-off valve characterized by 各二重弁体は、それぞれ一体成形されてなること、
を特徴とする請求項１に記載の遮断弁の漏洩防止構造。 Each double valve body is integrally molded,
The leakage prevention structure for a shut-off valve according to claim 1.
JP2011000670U 2011-02-09 2011-02-09 Structure for preventing leakage of shut-off valve Expired - Fee Related JP3167428U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012219857A (en) * 2011-04-05 2012-11-12 Ckd Corp Fluid control valve
CN106755679A (en) * 2017-01-17 2017-05-31 山东钢铁集团日照有限公司 A kind of top gas stop valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012219857A (en) * 2011-04-05 2012-11-12 Ckd Corp Fluid control valve
CN106755679A (en) * 2017-01-17 2017-05-31 山东钢铁集团日照有限公司 A kind of top gas stop valve

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