JP6893802B2 - Emergency shutoff tool for ejected gas and emergency shutoff method for ejected gas - Google Patents

Emergency shutoff tool for ejected gas and emergency shutoff method for ejected gas Download PDF

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JP6893802B2
JP6893802B2 JP2017041538A JP2017041538A JP6893802B2 JP 6893802 B2 JP6893802 B2 JP 6893802B2 JP 2017041538 A JP2017041538 A JP 2017041538A JP 2017041538 A JP2017041538 A JP 2017041538A JP 6893802 B2 JP6893802 B2 JP 6893802B2
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permanent magnet
gas conduit
ejected
work rod
metal gas
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JP2018146036A (en
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小林　真澄
真澄 小林
良一 鳥海
良一 鳥海
浩 安部
浩 安部
三和　信二
信二 三和
勝 永島
勝 永島
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Tokyo Gas Co Ltd
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Tokyo Gas Co Ltd
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Description

本発明は、金属ガス導管（鋼管、鋳鉄管など）の損傷箇所から噴出するガスを応急的に遮断する遮断具とこれを用いた遮断方法に関するものである。 The present invention relates to a blocking tool for emergencyly blocking gas ejected from a damaged portion of a metal gas conduit (steel pipe, cast iron pipe, etc.) and a blocking method using the same.

地中等に敷設された金属ガス導管は、その周囲で行われる他工事で使用される建設機械（パワーシャベルやバックホーなど）の作業部に接触するなどして、損傷する事例が確認されている。ガス導管が損傷すると、損傷箇所からガスが噴出するので、速やかにガス噴出を遮断することが求められる。 Cases have been confirmed in which metal gas conduits laid in the ground are damaged by contact with the working parts of construction machinery (power shovels, backhoes, etc.) used in other construction work around them. When the gas conduit is damaged, gas is ejected from the damaged part, so it is required to stop the gas ejection promptly.

このようなガス噴出を応急的に遮断する方法としては、ガス導管の損傷箇所周辺の土砂に、固化材と硬化材を混合した遮断材料を供給或いは充填して、周辺土砂ごと硬化させて損傷箇所を閉塞することが提案されている（下記特許文献１参照）。また、硬化時間が調整可能な注入硬化材を用い、ガス導管のガス噴出箇所周囲又はガス導管の内部に注入硬化材を注入・充填して、その後硬化させることでガス遮断を行うことも提案されている（下記特許文献２参照）。 As a method of temporarily shutting off such gas ejection, a blocking material in which a solidifying material and a hardening material are mixed is supplied or filled in the earth and sand around the damaged part of the gas conduit, and the surrounding earth and sand are hardened together with the damaged part. It has been proposed to block the gas (see Patent Document 1 below). It is also proposed to use an injection-curing material with an adjustable curing time, inject and fill the injection-curing material around the gas ejection point of the gas conduit or inside the gas conduit, and then cure it to shut off the gas. (See Patent Document 2 below).

特開２００７−５７０６１号公報Japanese Unexamined Patent Publication No. 2007-57061 特開２０１１−２２０４３３号公報Japanese Unexamined Patent Publication No. 2011-220433

前述した従来技術は、応急的に噴出ガスを遮断することは可能であるが、ガス導管の損傷箇所周囲が遮断材料で覆われた状態になったり、ガス導管の損傷箇所内部に硬化材が充填された状態になるので、その後の復旧工事で、固まった土砂の排除や、硬化材が充填されたガス導管の排除が大掛かりにならざるを得ず、復旧工事に大きな労力と時間を要する問題があった。 Although it is possible to shut off the ejected gas in an emergency with the above-mentioned conventional technique, the damaged part of the gas conduit is covered with a blocking material, or the damaged part of the gas conduit is filled with a hardening material. In the subsequent restoration work, it is necessary to remove the solidified earth and sand and the gas conduit filled with the hardening material on a large scale, which causes a problem that the restoration work requires a lot of labor and time. there were.

また、使用する遮断材料や硬化材は、作業時の緊急性を考慮して硬化時間の短いものを使用してはいるが、硬化にある程度の時間が掛かることは避けられない。このため、更に速効性が高く安全な応急的ガス遮断方法が求められている。 In addition, although the blocking material and the curing material to be used have a short curing time in consideration of the urgency during work, it is inevitable that the curing will take a certain amount of time. Therefore, there is a demand for an emergency gas shutoff method that is even faster and safer.

本発明は、このような事情に対処するために提案されたものである。すなわち、本発明は、金属ガス導管の損傷箇所から噴出するガスを遮断するに際して、安全且つ速やかにガス遮断を行うこと、更には、遮断後の復旧工事を簡易に行うことができるようにすること、などを課題としている。 The present invention has been proposed to deal with such circumstances. That is, the present invention makes it possible to safely and promptly shut off the gas when shutting off the gas ejected from the damaged portion of the metal gas conduit, and to easily perform the restoration work after the shutoff. , Etc. are the issues.

このような課題を解決するために、本発明は、以下の構成を具備するものである。
金属ガス導管の損傷箇所から噴出するガスを応急的に遮断する遮断具であって、遠隔作業が可能な長さを有する作業棒と、該作業棒の先端に設けた保持部に保持される永久磁石とを備え、前記永久磁石又は前記保持部は、前記損傷箇所を覆い前記金属ガス導管の表面に磁気吸着する吸着面を有し、該吸着面に前記損傷箇所に密着する粘着部材が付着させていることを特徴とする噴出ガス応急遮断具。 In order to solve such a problem, the present invention has the following configurations.
It is a shut-off tool that emergencyly shuts off the gas ejected from the damaged part of the metal gas conduit, and is permanently held by a work rod having a length capable of remote work and a holding portion provided at the tip of the work rod. The permanent magnet or the holding portion is provided with a magnet, and has an adsorption surface that covers the damaged portion and magnetically attracts to the surface of the metal gas conduit, and an adhesive member that adheres to the damaged portion is attached to the adsorption surface. An emergency blocker for ejected gas, which is characterized by being a magnet.

このような特徴を有する本発明は、遠隔作業が可能な作業棒の先端に永久磁石を保持して、粘着部材を介して永久磁石を金属ガス導管の損傷箇所に吸着させることで、損傷箇所から噴出するガスを遮断するので、安全且つ速やかにガス遮断を行うことができ、また、周辺土壌を硬化させたり、ガス導管内に硬化材を充填することが無いので、ガス遮断後に速やか且つ簡易に復旧工事を行うことが可能になる。 According to the present invention having such a feature, a permanent magnet is held at the tip of a work rod capable of remote work, and the permanent magnet is attracted to a damaged portion of a metal gas conduit via an adhesive member, so that the permanent magnet can be attracted from the damaged portion. Since the ejected gas is blocked, the gas can be shut off safely and quickly, and since the surrounding soil is not hardened or the gas conduit is not filled with a hardening material, the gas can be shut off quickly and easily. It will be possible to carry out restoration work.

本発明の実施形態に係る噴出ガス応急遮断具の全体構成を示した説明図である。It is explanatory drawing which showed the whole structure of the ejected gas emergency shutoff tool which concerns on embodiment of this invention. 本発明の実施形態に係る噴出ガス応急遮断具の具体例を示した説明図である。It is explanatory drawing which showed the specific example of the ejected gas emergency shutoff device which concerns on embodiment of this invention. 本発明の実施形態に係る噴出ガス応急遮断具の他の具体例を示した説明図である。It is explanatory drawing which showed the other specific example of the ejected gas emergency shutoff device which concerns on embodiment of this invention. 本発明の実施形態に係る噴出ガス応急遮断具の他の具体例を示した説明図である。It is explanatory drawing which showed the other specific example of the ejected gas emergency shutoff device which concerns on embodiment of this invention. 本発明の実施形態に係る噴出ガス応急遮断具の他の具体例を示した説明図である（（ａ）が吸着力が消失した状態、（ｂ）が吸着力が発生した状態を示している。）。It is explanatory drawing which showed the other specific example of the ejected gas emergency shutoff device which concerns on embodiment of this invention ((a) shows the state which the adsorption force disappeared, (b) shows the state where the adsorption force was generated. .). 本発明の遮断具を用いた作業例を示した説明図である。It is explanatory drawing which showed the working example using the blocking tool of this invention. 本発明の遮断具の応用例を示した説明図である。It is explanatory drawing which showed the application example of the blocking tool of this invention.

以下、図面を参照して本発明の実施形態を説明する。以下の説明で、異なる図における同一符号は同一機能の部位を示しており、各図における重複説明は適宜省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different figures indicate parts having the same function, and duplicate description in each figure will be omitted as appropriate.

図１及び図２に示すように、本発明の実施形態に係る噴出ガス応急遮断具（以下、遮断具という。）１は、永久磁石２と、この永久磁石２を先端に保持する作業棒３とを備えている。永久磁石２は、金属ガス導管Ｐの損傷箇所Ｐｓ（図２参照）を覆う吸着面２Ａを有しており、この吸着面２Ａに損傷箇所Ｐｓに密着する粘着部材４を付着させている。作業棒３は、遠隔作業が可能な長さを有し、その先端に永久磁石２を保持する保持部３Ａを備えている。永久磁石２は、鋼材に対する磁気吸着力が高いものが好ましく、例えば、希土類磁石（ネオジム磁石など）を用いることが好ましい。 As shown in FIGS. 1 and 2, the ejected gas emergency shutoff device (hereinafter referred to as a breaker) 1 according to the embodiment of the present invention includes a permanent magnet 2 and a work rod 3 that holds the permanent magnet 2 at its tip. And have. The permanent magnet 2 has a suction surface 2A that covers the damaged portion Ps (see FIG. 2) of the metal gas conduit P, and an adhesive member 4 that is in close contact with the damaged portion Ps is attached to the suction surface 2A. The work rod 3 has a length capable of remote work, and has a holding portion 3A at its tip that holds the permanent magnet 2. The permanent magnet 2 preferably has a high magnetic attraction to the steel material, and for example, a rare earth magnet (neodymium magnet or the like) is preferably used.

保持部３Ａでは、永久磁石２が金属ガス導管の表面に磁気吸着しない状態で保持されている。図１の例では、下方が開放された枠状の保持部３Ａ内に永久磁石２が保持されており、永久磁石２は、張力線５で上方に引き上げられ、この張力線５が作業棒３の手元側端部に支持された操作バー６に接続されている。作業棒３の手元側端部には、この操作バー６を備える操作部３Ｂが設けられ、保持部３Ａは、枠内で永久磁石２を上方の引き上げた状態で保持することで、金属ガス導管Ｐの表面から設定距離以上離れた状態で永久磁石２を保持している。 In the holding portion 3A, the permanent magnet 2 is held in a state where it is not magnetically attracted to the surface of the metal gas conduit. In the example of FIG. 1, the permanent magnet 2 is held in the frame-shaped holding portion 3A whose lower side is open, the permanent magnet 2 is pulled upward by the tension line 5, and the tension line 5 is the work rod 3. It is connected to the operation bar 6 supported by the hand side end of the magnet. An operation unit 3B provided with the operation bar 6 is provided at the hand side end of the work rod 3, and the holding unit 3A holds the permanent magnet 2 in a state of being pulled upward in the frame, thereby holding a metal gas conduit. The permanent magnet 2 is held at a distance of a set distance or more from the surface of P.

操作部３Ｂに設けられる操作バー６は、永久磁石２を金属ガス導管Ｐに磁気吸着する状態に切り替える操作を行う。図２に示した例では、作業棒３の操作部３Ｂに、作業棒３の長手方向に沿ったスリット３Ｐを設けており、作業棒３の軸周りに９０°回転した操作バー６をこのスリット３Ｐに落とし込むことで、操作バー６に接続された張力線５の引き上げ張力を除き、永久磁石２を、粘着部材４を介して、磁気吸着力で金属ガス導管Ｐの表面に吸着させる。 The operation bar 6 provided in the operation unit 3B performs an operation of switching the permanent magnet 2 to a state of being magnetically attracted to the metal gas conduit P. In the example shown in FIG. 2, the operation portion 3B of the work rod 3 is provided with a slit 3P along the longitudinal direction of the work rod 3, and the operation bar 6 rotated by 90 ° around the axis of the work rod 3 is formed into this slit. By dropping it into 3P, the pulling tension of the tension wire 5 connected to the operation bar 6 is removed, and the permanent magnet 2 is attracted to the surface of the metal gas conduit P by magnetic attraction through the adhesive member 4.

永久磁石２が粘着部材４を介して金属ガス導管Ｐに吸着すると、その吸着力で粘着部材４は押し潰されて、金属ガス導管Ｐの損傷箇所Ｐｓ内に一部が充填され、損傷箇所Ｐｓに密着することになり、即座に損傷箇所Ｐｓからのガス噴出が遮断される。 When the permanent magnet 2 is attracted to the metal gas conduit P via the adhesive member 4, the adhesive member 4 is crushed by the adsorption force, and a part of the damaged portion Ps of the metal gas conduit P is filled with the damaged portion Ps. The gas is immediately cut off from the damaged portion Ps.

このような遮断具１によると、磁気吸着力の高い永久磁石２は、操作棒３の先端に設けた保持部３Ａに、金属ガス導管Ｐの表面に磁気吸着しない状態で保持されているので、誤って損傷箇所Ｐｓとは異なる箇所に永久磁石２を吸着させてしまう不具合が無く、損傷箇所Ｐｓを正確に狙って、その直上に永久磁石２の吸着面２Ａを移動させることができる。そして、永久磁石２の吸着面２Ａを損傷箇所Ｐｓの直上に位置した状態で、操作部３Ｂの操作バー６を操作して、永久磁石２を引き上げている張力線５の張力を緩めることで、永久磁石２を金属ガス導管Ｐの表面に吸着させるので、確実に損傷箇所Ｐｓに粘着部材４を密着させて損傷箇所Ｐｓの孔や亀裂を塞ぐことができる。 According to such a blocking tool 1, the permanent magnet 2 having a high magnetic attraction force is held by the holding portion 3A provided at the tip of the operating rod 3 in a state where it is not magnetically attracted to the surface of the metal gas conduit P. There is no problem of accidentally attracting the permanent magnet 2 to a location different from the damaged portion Ps, and the attracting surface 2A of the permanent magnet 2 can be moved directly above the damaged portion Ps by accurately aiming at the damaged portion Ps. Then, with the suction surface 2A of the permanent magnet 2 located directly above the damaged portion Ps, the operation bar 6 of the operation unit 3B is operated to loosen the tension of the tension wire 5 that pulls up the permanent magnet 2. Since the permanent magnet 2 is attracted to the surface of the metal gas conduit P, the adhesive member 4 can be reliably brought into close contact with the damaged portion Ps to close the holes and cracks in the damaged portion Ps.

図３は、永久磁石２の吸着面２Ａの形状例を示している。図示の例は、金属ガス導管Ｐの表面形状に応じて、吸着面２Ａを湾曲面にしている。これによると、吸着面２Ａの吸着面積を拡げることができ、より確実に損傷箇所Ｐｓからのガス噴出を抑止することができる。永久磁石２の吸着面２Ａは、この例に限らず、損傷箇所Ｐｓの形態に応じて適宜設定することができる。 FIG. 3 shows an example of the shape of the suction surface 2A of the permanent magnet 2. In the illustrated example, the suction surface 2A is a curved surface according to the surface shape of the metal gas conduit P. According to this, the suction area of the suction surface 2A can be expanded, and the gas ejection from the damaged portion Ps can be more reliably suppressed. The suction surface 2A of the permanent magnet 2 is not limited to this example, and can be appropriately set according to the shape of the damaged portion Ps.

図４及び図５は、遮断具１の他の構成例を示している。この例では、保持部３Ａは、吸着面２Ａの吸着力を消失させた状態で永久磁石２を保持し、操作部３Ｂは、吸着面２Ａの消失した吸着力を発生させるように切り替える。この例では、保持部３Ａは、図５に示すように、永久磁石２を囲む一対のヨーク３０とそのヨーク３０間に介在する非磁性材３１によって構成されている。これよって、図５（ａ）に示すように、非磁性材３１に対向して磁極を配置すると、ヨーク３０内に磁力線が止まって、吸着面２Ａの吸着力が消失した状態になる。また、図５（ｂ）に示すように、ヨーク３０に対向して磁極を配置すると、ヨーク３０の外に磁力線が引き出され、保持部３Ａの吸着面２Ａに吸着力が発生した状態になる。 4 and 5 show another configuration example of the breaker 1. In this example, the holding unit 3A holds the permanent magnet 2 in a state where the suction force of the suction surface 2A is lost, and the operation unit 3B switches so as to generate the lost suction force of the suction surface 2A. In this example, as shown in FIG. 5, the holding portion 3A is composed of a pair of yokes 30 surrounding the permanent magnet 2 and a non-magnetic material 31 interposed between the yokes 30. As a result, as shown in FIG. 5A, when the magnetic poles are arranged so as to face the non-magnetic material 31, the magnetic field lines stop in the yoke 30, and the suction force of the suction surface 2A disappears. Further, as shown in FIG. 5B, when the magnetic poles are arranged so as to face the yoke 30, the magnetic field lines are drawn out of the yoke 30, and the suction force is generated on the suction surface 2A of the holding portion 3A.

この例では、図４に示すように、操作部３Ｂは、作業棒３内に延設される操作軸３３を回転して、永久磁石２を図５（ａ）の状態から図５（ｂ）の状態に切り替える。操作軸３３の回転は、図示の例では、ウォームギヤを介して永久磁石２の回転軸２Ｂを回転させている。 In this example, as shown in FIG. 4, the operation unit 3B rotates the operation shaft 33 extending in the work rod 3 to move the permanent magnet 2 from the state of FIG. 5 (a) to FIG. 5 (b). Switch to the state of. In the illustrated example, the rotation of the operation shaft 33 rotates the rotation shaft 2B of the permanent magnet 2 via the worm gear.

このような例の遮断具１によっても、前述した例と同様に、保持部３Ａが金属ガス導管Ｐの表面に磁気吸着しない状態で永久磁石２を保持しているので、誤って損傷箇所Ｐｓとは異なる箇所に永久磁石２を吸着させてしまう不具合が無く、損傷箇所Ｐｓを正確に狙って、その直上に粘着部材４が付着した吸着面２Ａを移動させることができる。そして、その状態で、操作部３Ｂを操作して、吸着面２Ａの磁気吸着力を発生させることで、吸着面２Ａを金属ガス導管Ｐの表面に吸着させ、確実に損傷箇所Ｐｓに粘着部材４を密着させることができる。 Even with the blocking tool 1 in such an example, the permanent magnet 2 is held in a state where the holding portion 3A is not magnetically attracted to the surface of the metal gas conduit P, as in the above-described example. There is no problem of attracting the permanent magnets 2 to different locations, and the attracting surface 2A to which the adhesive member 4 is attached can be moved by accurately aiming at the damaged portion Ps. Then, in that state, by operating the operation unit 3B to generate the magnetic attraction force of the suction surface 2A, the suction surface 2A is attracted to the surface of the metal gas conduit P, and the adhesive member 4 is surely attached to the damaged portion Ps. Can be brought into close contact with each other.

図６は、遮断具１を用いた遮断方法の作業例を示しており、地下に埋設された金属ガス導管Ｐの損傷箇所Ｐｓから噴出するガスを、地上の作業者が遮断具１を用いて遮断する例を示している。作業者Ｍは、形成されている立て坑Ｔを介して、地上から作業棒３の操作部３Ｂを持って、作業棒３の先端に設けた保持部３Ａを、金属ガス導管Ｐの損傷箇所Ｐｓ上に置く。そして、前述したように、操作部３Ｂを操作することで、保持部３Ａに保持された永久磁石２を金属ガス導管Ｐの表面に吸着される。この際、作業棒３は、地上からの遠隔作業が可能になるように、十分な長さが確保されている。これによって、作業者Ｍは、立て坑Ｔに入ること無く、安全な地上で速やかにガス遮断の作業を行うことができる。 FIG. 6 shows a working example of a blocking method using the blocking tool 1, in which a worker on the ground uses the blocking tool 1 to eject gas ejected from a damaged portion Ps of a metal gas conduit P buried underground. An example of blocking is shown. The worker M holds the operation portion 3B of the work rod 3 from the ground through the formed vertical shaft T, and holds the holding portion 3A provided at the tip of the work rod 3 at the damaged portion Ps of the metal gas conduit P. put on top. Then, as described above, by operating the operation unit 3B, the permanent magnet 2 held by the holding unit 3A is attracted to the surface of the metal gas conduit P. At this time, the work rod 3 has a sufficient length so that remote work from the ground is possible. As a result, the worker M can quickly perform the gas shutoff work on the safe ground without entering the shaft T.

図７は、遮断具１の応用例を示している。この例では、中空の作業棒３を放散管にして、損傷箇所Ｐｓからの噴出ガスを地上に放散させている。この使用例を実施するためには、永久磁石２と粘着部材４にガス流通孔を設けて、そのガス流通孔を通ったガスを中空の作業棒３内に進入させる。放散管を兼ねた作業棒３は、端部にバルブＶや延長管を設けることで、噴出ガスを大気中に放散することができ、地上部においてバルブを操作することで噴出ガスを遮断することができる。 FIG. 7 shows an application example of the blocking tool 1. In this example, the hollow working rod 3 is used as a radiation pipe to dissipate the gas ejected from the damaged portion Ps to the ground. In order to carry out this usage example, a gas flow hole is provided in the permanent magnet 2 and the adhesive member 4, and the gas passing through the gas flow hole is allowed to enter the hollow working rod 3. The work rod 3 that also serves as a discharge pipe can dissipate the ejected gas into the atmosphere by providing a valve V or an extension pipe at the end, and shuts off the ejected gas by operating the valve on the ground. Can be done.

以上、本発明の実施の形態について図面を参照して詳述してきたが、具体的な構成はこれらの実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。また、上述の各実施の形態は、その目的及び構成等に特に矛盾や問題がない限り、互いの技術を流用して組み合わせることが可能である。 Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the design changes, etc. within the range not deviating from the gist of the present invention, etc. Even if there is, it is included in the present invention. Further, each of the above-described embodiments can be combined by diverting the technologies of each other as long as there is no particular contradiction or problem in the purpose and configuration thereof.

１：噴出ガス応急遮断具（遮断具），２：永久磁石，２Ａ：吸着面，
３：作業棒，３Ａ：保持部，３Ｂ：操作部，
４：粘着部材，５：張力線，６：操作バー，
Ｐ：金属ガス導管，Ｐｓ：損傷箇所 1: Ejected gas emergency shutoff (blocker), 2: Permanent magnet, 2A: Adsorption surface,
3: Work rod, 3A: Holding part, 3B: Operation part,
4: Adhesive member, 5: Tension wire, 6: Operation bar,
P: Metal gas conduit, Ps: Damaged part

Claims (6)

金属ガス導管の損傷箇所から噴出するガスを応急的に遮断する遮断具であって、
遠隔作業が可能な長さを有する作業棒と、該作業棒の先端に設けた下方が開放された枠状の保持部に保持される永久磁石とを備え、
前記永久磁石は、前記損傷箇所を覆い前記金属ガス導管の表面に磁気吸着する吸着面を有し、該吸着面に前記損傷箇所に密着する粘着部材が付着され、
前記保持部は、前記永久磁石が前記金属ガス導管の表面に磁気吸着しない状態で保持し、
前記作業棒の手元側には、前記永久磁石が前記金属ガス導管に磁気吸着する状態に切り替える操作部が設けられていることを特徴とする噴出ガス応急遮断具。 It is a shut-off device that temporarily shuts off the gas ejected from the damaged part of the metal gas conduit.
A work rod having a length capable of remote work and a permanent magnet provided at the tip of the work rod and held by a frame-shaped holding portion having an open lower portion are provided.
The permanent magnet has an adsorption surface that covers the damaged portion and magnetically attracts to the surface of the metal gas conduit, and an adhesive member that adheres to the damaged portion is attached to the adsorption surface.
The holding portion holds the permanent magnet in a state where it is not magnetically attracted to the surface of the metal gas conduit.
An ejected gas emergency shutoff tool characterized in that an operation unit for switching the permanent magnet to a state of being magnetically attracted to the metal gas conduit is provided on the hand side of the work rod. 前記保持部は、前記金属ガス導管の表面から設定距離以上離れた状態で前記永久磁石を 保持し、
前記操作部は、操作バーを備え、該操作バーと前記永久磁石とは張力線を介して接続され、前記永久磁石に引き上げ張力を付与する状態と引き上げ張力を除く状態を切り替えることを特徴とする請求項１記載の噴出ガス応急遮断具。 The holding portion holds the permanent magnet at a distance of a set distance or more from the surface of the metal gas conduit.
The operation unit includes an operation bar, and the operation bar and the permanent magnet are connected via a tension wire to switch between a state in which pulling tension is applied to the permanent magnet and a state in which pulling tension is removed. The ejected gas emergency shutoff according to claim 1. 金属ガス導管の損傷箇所から噴出するガスを応急的に遮断する遮断具であって、
遠隔作業が可能な長さを有する作業棒と、該作業棒の先端に設けた保持部に保持される永久磁石とを備え、
前記保持部は、前記損傷箇所を覆い前記金属ガス導管の表面に磁気吸着する吸着面を有し、該吸着面に前記損傷箇所に密着する粘着部材が付着され、
前記保持部は、前記吸着面の吸着力を消失させた状態で前記永久磁石を保持し、
前記作業棒の手元側には、前記作業棒内に延設される操作軸を回転して前記吸着面の消失した吸着力を発生させるように永久磁石を回転させる操作部が設けられていることを特徴とする噴出ガス応急遮断具。 It is a shut-off device that temporarily shuts off the gas ejected from the damaged part of the metal gas conduit.
A work rod having a length capable of remote work and a permanent magnet held by a holding portion provided at the tip of the work rod are provided.
The holding portion has an adsorption surface that covers the damaged portion and magnetically attracts to the surface of the metal gas conduit, and an adhesive member that adheres to the damaged portion is attached to the adsorption surface.
The holding portion holds the permanent magnet in a state where the suction force of the suction surface is eliminated.
An operation unit is provided on the hand side of the work rod to rotate a permanent magnet so as to rotate an operation shaft extending in the work rod to generate an attractive force that has disappeared from the suction surface. An emergency shut-off device for ejected gas. 前記吸着面を、前記金属ガス導管の表面形状に応じて湾曲面にしていることを特徴としている請求項１〜３のいずれか１項に記載の噴出ガス応急遮断具。 The ejected gas emergency shutoff according to any one of claims 1 to 3 , wherein the suction surface is curved according to the surface shape of the metal gas conduit. 金属ガス導管の損傷箇所から噴出するガスを応急的に遮断する遮断方法であって、
遠隔作業が可能な長さを有する作業棒と、該作業棒の先端に設けた下方が開放された枠状の保持部に保持される永久磁石とを備えた遮断具を用い、
前記永久磁石は、前記損傷箇所を覆い前記金属ガス導管の表面に磁気吸着する吸着面を有し、該吸着面に前記損傷箇所に密着する粘着部材を付着させ、
前記保持部は、前記永久磁石が前記金属ガス導管の表面に磁気吸着しない状態で保持し、
前記作業棒の手元側の前記永久磁石が前記金属ガス導管に磁気吸着する状態に切り替える操作部を操作することにより、前記吸着面を前記粘着部材を介して前記損傷箇所に磁気吸着させることを特徴とする噴出ガスの応急遮断方法。 It is a shutoff method that temporarily shuts off the gas ejected from the damaged part of the metal gas conduit.
Using a breaker equipped with a work rod having a length capable of remote work and a permanent magnet provided at the tip of the work rod and held by a frame-shaped holding portion having an open bottom.
The permanent magnet has an adsorption surface that covers the damaged portion and magnetically attracts to the surface of the metal gas conduit, and an adhesive member that adheres to the damaged portion is attached to the adsorption surface.
The holding portion holds the permanent magnet in a state where it is not magnetically attracted to the surface of the metal gas conduit.
By operating an operation unit that switches the permanent magnet on the hand side of the work rod to a state of magnetically attracting to the metal gas conduit, the suction surface is magnetically attracted to the damaged portion via the adhesive member. An emergency shutoff method for the ejected gas. 金属ガス導管の損傷箇所から噴出するガスを応急的に遮断する遮断方法であって、
遠隔作業が可能な長さを有する作業棒と、該作業棒の先端に設けた保持部に保持される永久磁石とを備えた遮断具を用い、
前記保持部は、前記損傷箇所を覆い前記金属ガス導管の表面に磁気吸着する吸着面を有し、該吸着面に前記損傷箇所に密着する粘着部材を付着させ、
前記吸着面の吸着力を消失させた状態で前記永久磁石を保持し、
前記作業棒の手元側には、前記作業棒内に延設される操作軸を回転して前記吸着面の消失した吸着力を発生させるように永久磁石を回転させる操作をすることにより、前記吸着面を前記粘着部材を介して前記損傷箇所に磁気吸着させることを特徴とする噴出ガスの応急遮断方法。
It is a shutoff method that temporarily shuts off the gas ejected from the damaged part of the metal gas conduit.
Using a breaker equipped with a work rod having a length capable of remote work and a permanent magnet held by a holding portion provided at the tip of the work rod.
The holding portion has an adsorption surface that covers the damaged portion and magnetically attracts to the surface of the metal gas conduit, and an adhesive member that adheres to the damaged portion is attached to the adsorption surface.
The permanent magnet is held in a state where the suction force of the suction surface is eliminated, and the permanent magnet is held.
On the hand side of the work rod, the operation shaft extending in the work rod is rotated to rotate a permanent magnet so as to generate the disappeared suction force of the suction surface, thereby attracting the work rod. An emergency shutoff method for ejected gas, which comprises magnetically adsorbing a surface to the damaged portion via the adhesive member.
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