JPH049569Y2 - - Google Patents
Info
- Publication number
- JPH049569Y2 JPH049569Y2 JP4328584U JP4328584U JPH049569Y2 JP H049569 Y2 JPH049569 Y2 JP H049569Y2 JP 4328584 U JP4328584 U JP 4328584U JP 4328584 U JP4328584 U JP 4328584U JP H049569 Y2 JPH049569 Y2 JP H049569Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- gas sampling
- ground
- sampling device
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005070 sampling Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 description 33
- 238000001514 detection method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【考案の詳細な説明】
本考案は地表に設置して地中に埋設されたガス
導管からの漏洩ガスを採集する地面用ガス採集装
置に関するものである。[Detailed Description of the Invention] The present invention relates to a ground gas sampling device that is installed on the ground surface to collect leaked gas from a gas pipe buried underground.
地表において地中からの漏洩ガスを採集するの
に実公昭55−13719号公報に示されているものが
ある。このものは採集対象ガスの比重が空気より
小さいものについては良好であるがLPガスのよ
うに空気より比重の大きなガスについては採集で
きない。 There is a method shown in Japanese Utility Model Publication No. 13719/1983 to collect gas leaking from underground at the surface of the earth. This method works well for gases whose specific gravity is lower than air, but cannot collect gases whose specific gravity is higher than air, such as LP gas.
路面が硬質で凹凸が激しい場所では、路面との
密着性が充分でなければ路面と吸引口面との間に
空間が形成されるため検出対象外の空気を吸い込
んでしまう。従つて例えば硬質で凹凸が激しいア
スフアルト等の路面によつて覆われた地中に埋設
されたLPガス導管等よりの空気比重1.0以上の重
いガスの漏洩発見にはボーリング方式でアスフア
ルト等の路面から地中に向け、ガス吸引用の穴を
あけて検知計測調査を行つている。 In places where the road surface is hard and highly uneven, if the adhesion to the road surface is not sufficient, a space will be formed between the road surface and the suction port surface, causing air that is not to be detected to be sucked in. Therefore, for example, in order to discover leaks of heavy gases with an air specific gravity of 1.0 or more from LP gas pipes buried underground covered by a hard and uneven road surface such as asphalt, the boring method is used to detect the leakage from the asphalt or other road surface. We are conducting a detection measurement survey by drilling a hole underground for gas suction.
本考案の目的は空気より比重の大きなガスを容
易且つ正確に採集できる地面用ガス採集装置を得
るにある。 An object of the present invention is to provide a ground gas sampling device that can easily and accurately collect gas having a higher specific gravity than air.
本考案の地面用ガス採集装置は、ガス採集口本
体と、この本体に設けたガス導入口と、このガス
導入口を囲むよう前記本体の下面より下方に突出
せしめたその頂部を下向きとする三角状断面の環
状の弾性体とより成ることを特徴とする。 The ground gas sampling device of the present invention includes a gas sampling port main body, a gas inlet provided in the main body, and a triangular shape whose apex faces downward and projects downward from the bottom surface of the main body so as to surround the gas inlet. It is characterized by consisting of an annular elastic body with a shaped cross section.
以下図面に依つて本考案の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本考案の地面用ガス採集装置を用いた
ガス検知装置の説明図であつて１はガス採集装
置、２は第１ポンプ、３は流量緩衝器、４はフイ
ルタ、５はガス検知器、６は第２ポンプを示す。 FIG. 1 is an explanatory diagram of a gas detection device using the ground gas sampling device of the present invention, in which 1 is the gas sampling device, 2 is the first pump, 3 is the flow buffer, 4 is the filter, and 5 is the gas detection device. 6 indicates the second pump.
本考案地面用ガス採集装置のガス採集装置１は
第２図の拡大断面図に示すようにガス採集口本体
７と、この本体７の中央部に形成したガス導入口
８と、このガス導入口８を囲むよう前記本体７の
下面中央部に形成したくぼみ９と、このくぼみ９
を塞ぐフイリタ１０と、フイルタ抑え１１と、前
記本体７の下面外周部に形成した鳩尾状断面の環
状溝１２と、この環状溝１２にその底部を嵌合し
その頂部を前記本体７の下面より下方に突出せし
めた硬度20〜40、頂部の幅が３mm以下の三角状断
面の環状の弾性体１３とにより形成する。 As shown in the enlarged sectional view of FIG. 2, the gas sampling device 1 of the ground gas sampling device of the present invention includes a gas sampling port body 7, a gas inlet 8 formed in the center of the main body 7, and a gas inlet a recess 9 formed in the center of the lower surface of the main body 7 so as to surround the recess 9;
a filter 10 for closing the filter, a filter retainer 11, an annular groove 12 with a dovetail cross section formed on the outer periphery of the lower surface of the main body 7, the bottom of which is fitted into the annular groove 12, and the top of the filter is inserted from the lower surface of the main body 7. It is formed of an annular elastic body 13 having a hardness of 20 to 40 and a triangular cross section with a top width of 3 mm or less and protruding downward.
本考案地面用ガス採集装置は上記のような構成
であるから弾性体１３の頂部が路面に充分に密着
し路面の凹凸が激しい場合には本体７に荷重を加
えることによつて弾性体１３の頂部がつぶれ、そ
の底面積が増大し地面に対する密着性が増大し地
中からの漏洩ガスを無駄なく採集できる大きな利
益がある。 Since the ground gas sampling device of the present invention has the above-mentioned configuration, the top of the elastic body 13 is in close contact with the road surface, and when the road surface is extremely uneven, the elastic body 13 can be moved by applying a load to the main body 7. The top part collapses, increasing the bottom area and increasing its adhesion to the ground, which has the great advantage of being able to collect leaked gas from underground without wasting it.
第１図は本考案地面用ガス採集装置を用いたガ
ス検知装置の説明図、第２図はその要部の断面図
である。
１……ガス採集装置、２……第１ポンプ、３…
…流量緩衝器、４……フイルタ、５……ガス検知
器、６……第２ポンプ、７……ガス採集口本体、
８……ガス導入口、９……くぼみ、１０……フイ
ルタ、１１……フイルタ抑え、１２……環状溝、
１３……弾性体。
FIG. 1 is an explanatory diagram of a gas detection device using the ground gas sampling device of the present invention, and FIG. 2 is a sectional view of the main parts thereof. 1... Gas collection device, 2... First pump, 3...
...Flow rate buffer, 4...Filter, 5...Gas detector, 6...Second pump, 7...Gas sampling port body,
8... Gas inlet, 9... Hollow, 10... Filter, 11... Filter retainer, 12... Annular groove,
13...Elastic body.
Claims (1)
口と、このガス導入口を囲むよう前記本体の下面
より下方に突出せしめたその頂部を下向きとする
三角状断面の環状の弾性体とより成ることを特徴
とする地面用ガス採集装置。 Consists of a gas sampling port body, a gas inlet provided in this body, and an annular elastic body having a triangular cross section with its top facing downward and protruding downward from the lower surface of the body so as to surround the gas inlet. A ground gas sampling device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4328584U JPS60156438U (en) | 1984-03-28 | 1984-03-28 | Ground gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4328584U JPS60156438U (en) | 1984-03-28 | 1984-03-28 | Ground gas sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60156438U JPS60156438U (en) | 1985-10-18 |
| JPH049569Y2 true JPH049569Y2 (en) | 1992-03-10 |
Family
ID=30554820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4328584U Granted JPS60156438U (en) | 1984-03-28 | 1984-03-28 | Ground gas sampling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156438U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3336543B2 (en) * | 1993-12-28 | 2002-10-21 | 株式会社アルバック | Gas collection device for leak inspection in leak detector |
| JP3742398B2 (en) * | 2003-03-20 | 2006-02-01 | 喜計 鈴木 | Non-destructive geological survey method and equipment |
-
1984
- 1984-03-28 JP JP4328584U patent/JPS60156438U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60156438U (en) | 1985-10-18 |
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