JPH01265133A

JPH01265133A - Trapping device for underground leaking gas

Info

Publication number: JPH01265133A
Application number: JP9490788A
Authority: JP
Inventors: Minoru Okada; 実岡田; Hiroshi Miura; 浩三浦; Shoji Mashio; 真塩　章二; Masahiro Ishizuka; 昌宏石塚
Original assignee: Riken Keiki KK; Tokyo Gas Co Ltd
Current assignee: Riken Keiki KK; Tokyo Gas Co Ltd
Priority date: 1988-04-18
Filing date: 1988-04-18
Publication date: 1989-10-23

Abstract

PURPOSE:To easily perform the detection of an underground leaking gas by burying a gas trapper underground and opening on a ground the end part of the trapping tube connected to this gas trapper. CONSTITUTION:A gas trapper 1 is buried underground and the buried trapper 1 is connected to a trapping tube 2. The end part 3 of the trapping tube 2 is opened on a ground surface. In case of any leakage of gas from a gas pipe 7, the leaking gas comes in the trapper 1 from its opening part 4 by ascending from underground and reaches the end part 3 of the trapping tube 2 via the tube 2. Consequently the detection of a leaking gas can easily be performed by collecting a sampling gas by opening the cover of the end part 3.

Description

【発明の詳細な説明】（産業上の利用分野）本発明は地中漏洩ガス捕捉装置に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to an underground leakage gas capture device.

（従来技術と問題点）従来、地中漏洩ガスを検知する方法として、ガス検査車
により又はボーリングバー等により地表に穴をあけ、そ
の穴から地中にガスサンプリングパイプを挿入して漏洩
ガスの検知を行なっていた。(Prior art and problems) Conventionally, as a method of detecting underground gas leakage, a hole is made on the ground surface using a gas inspection vehicle or a boring bar, etc., and a gas sampling pipe is inserted into the ground through the hole to detect leaking gas. was performing detection.

かかる方法では、建築物の下に埋設したガス管からの漏
洩は検知困難であると共に自動車の往来の激しい道路で
は、前記した穴をあけること自体に困難が伴うため、道
路下に埋設されたガス管からの漏洩の検知は実際上むず
かしかった。With this method, it is difficult to detect leaks from gas pipes buried under buildings, and drilling the holes itself is difficult on roads with heavy vehicle traffic. Detecting leaks from pipes was difficult in practice.

（発明の構成）符号１はガス捕捉器であって、この捕捉器１を地中に埋
設し、埋設した捕捉器１は捕捉管２と接続する。該捕捉
管２の端部３は地表面に開口させる構成とする。前記ガ
ス捕捉器ｌはその底部に形成した捕捉開口部４とその側
部に形成した捕捉管接続口５を有し、前記捕捉開口部４
には多孔質プラスチック材６を装置する。前記捕捉器２
は、図示の如くガス管７から離して埋設してもよく、或
はガス管７の上に載置してプラスチック帯８等により固
定してもよい。前記捕捉管２の端部３には蓋９を設け、
地表面で何時でも捕捉管２中のガスをサンプリングでき
るようにする。実施例図に於いては、複数個の捕捉器１
を捕捉管２により接続した例を示す。符号１０は土砂等
の侵入を防ぐ綱状部材である。(Structure of the Invention) Reference numeral 1 denotes a gas trap, and this trap 1 is buried underground, and the buried trap 1 is connected to a trap pipe 2. The end portion 3 of the capture tube 2 is configured to open to the ground surface. The gas trap 1 has a trapping opening 4 formed at its bottom and a trapping tube connection port 5 formed at its side.
A porous plastic material 6 is installed therein. The trap 2
may be buried away from the gas pipe 7 as shown, or may be placed on the gas pipe 7 and fixed with a plastic band 8 or the like. A lid 9 is provided at the end 3 of the capture tube 2;
To enable sampling of gas in a capture tube 2 at any time on the ground surface. In the embodiment diagram, a plurality of trappers 1
An example is shown in which the two are connected by the capture tube 2. Reference numeral 10 is a rope-like member that prevents the intrusion of earth and sand.

（作　用）以上の構成に於いて、ガス管７からのガスの漏洩があっ
た場合、漏洩ガスは地中を上昇して、ガス捕捉器１の捕
捉開口部４から捕捉器ｌ内に入り、捕捉管２を経て、そ
の端部３に至る。従って端部３の蓋をあければ即座にサ
ンプリングガスを採取することができる。捕捉器１をガ
ス管７の上に載置した場合でも、漏洩ガスの一部はガス
管７の面にそって上昇するから、漏洩ガスは自然に捕捉
器ｌによって前記したようにして捕捉される。(Function) In the above configuration, when gas leaks from the gas pipe 7, the leaked gas rises underground and enters the trap 1 through the trap opening 4 of the gas trap 1. , through the capture tube 2 to its end 3. Therefore, by opening the lid of the end portion 3, sampling gas can be immediately collected. Even when the trap 1 is placed on the gas pipe 7, some of the leaked gas rises along the surface of the gas pipe 7, so the leaked gas is naturally captured by the trap 1 as described above. Ru.

（発明の効果）本発明は以上の通りであるので、地表面で蓋等をあける
だけで即座にサンプリングガスを採取することができ、
従来のように地表に穴をあけたりすることがないので、
漏洩ガスの検知が容易となるだけでなく、ガス管を埋設
作業の時、本発明をあらかじめ施工しておけば、建築物
の下の漏洩でも、道路の下の漏洩でも容易に検知するこ
とができる。更に、捕捉器の捕捉開口部は捕捉器の底部
に設けているので、地表面から浸透する雨水が侵入する
ことがない等の諸効果がある。(Effects of the Invention) Since the present invention is as described above, sampling gas can be immediately collected by simply opening a lid etc. on the ground surface.
Because there is no need to drill holes in the ground like in the past,
Not only will it be easier to detect gas leaks, but if the present invention is installed in advance when burying gas pipes, it will be easier to detect leaks under buildings and roads. can. Furthermore, since the trap opening of the trap is provided at the bottom of the trap, there are various effects such as preventing rainwater from penetrating from the ground surface.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は捕捉器の斜視図、第２図は捕捉器の断面図、第
３図は捕捉管端部の説明図、第４図〜第６図は施工例の
説明図である。符号１・・・捕捉器、２・・・捕捉管、３・・・捕捉管
端部、４・・・捕捉開口部、５・・・捕捉管接続口、６
・・・多孔質プラスチック材、７・・・ガス管、８・・
・プラスチック帯、９・・・蓋、１０・・・網状部材。FIG. 1 is a perspective view of the trap, FIG. 2 is a sectional view of the trap, FIG. 3 is an explanatory view of the end of the trap tube, and FIGS. 4 to 6 are explanatory views of construction examples. Reference numeral 1... Trap device, 2... Capture tube, 3... Capture tube end, 4... Capture opening, 5... Capture tube connection port, 6
... Porous plastic material, 7... Gas pipe, 8...
-Plastic band, 9...lid, 10...net-like member.

Claims

【特許請求の範囲】[Claims]

（１）地中にガス捕捉器を埋設し、前記ガス捕捉器はガ
ス捕捉管と接続し、該捕捉管の端部は地面に開口させた
ことを特徴とする地中漏洩ガス捕捉装置。(1) An underground leakage gas capture device characterized in that a gas capture device is buried underground, the gas capture device is connected to a gas capture pipe, and the end of the capture pipe is opened to the ground.

（２）埋設管上にガス捕捉器を載置し、前記ガス捕捉器
はガス捕捉管と接続し、前記ガス捕捉管の端部は地面に
開口させたことを特徴とする地中漏洩ガス捕捉装置。(2) Underground leakage gas capture characterized in that a gas capture device is placed on a buried pipe, the gas capture device is connected to the gas capture pipe, and the end of the gas capture pipe is opened to the ground. Device.

（３）前記ガス捕捉器は捕捉開口部と捕捉管接続口とを
有し、前記捕捉開口部には多孔質プラスチック材を装置
した特許請求の範囲第１項又は第２項記載の地中漏洩ガ
ス捕捉装置。(3) Underground leakage according to claim 1 or 2, wherein the gas trap has a trapping opening and a trapping pipe connection port, and the trapping opening is made of a porous plastic material. Gas capture device.