JP2001082700A - Leakage detection device - Google Patents
Leakage detection deviceInfo
- Publication number
- JP2001082700A JP2001082700A JP25516699A JP25516699A JP2001082700A JP 2001082700 A JP2001082700 A JP 2001082700A JP 25516699 A JP25516699 A JP 25516699A JP 25516699 A JP25516699 A JP 25516699A JP 2001082700 A JP2001082700 A JP 2001082700A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- pipe
- liquid storage
- storage body
- leak
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二重配管用の漏洩
検知装置に関する。The present invention relates to a leak detecting device for a double pipe.
【０００２】[0002]
【従来の技術】液体タンク、例えば給油所の地下タンク
に接続される配管には、地上の給油機や注油口あるいは
通気口との配管があるが、これらの配管は、従来におい
ては鉄パイプが用いられていた。ところが、鉄パイプで
は、表面に塗装をしても、地下に埋設されるために腐食
により油が漏れ、地盤に浸透して汚染源となったり、資
源の無駄になっていた。2. Description of the Related Art Pipes connected to a liquid tank, for example, an underground tank at a gas station, include pipes connected to a lubricator on the ground, a lubrication port or a vent, and these pipes are conventionally made of iron pipes. Was used. However, even if the surface of the iron pipe is painted, since it is buried underground, oil leaks due to corrosion and penetrates into the ground to become a pollution source and waste resources.
【０００３】そこで、近年では、地面や外気に接触する
部分は合成樹脂の外管で、油や液体を輸送する部分は鉄
パイプまたは合成樹脂パイプを用いた内管の二重配管が
採用されるようになっている。そして、安全のために、
内管から油漏れがあった場合にその漏洩を検知する装置
が内管と外管の間に設けられる。In recent years, therefore, a double pipe of a synthetic resin outer pipe has been adopted for a portion that comes into contact with the ground or the outside air, and an inner pipe using an iron pipe or a synthetic resin pipe has been adopted for a section for transporting oil or liquid. It has become. And for safety,
When there is an oil leak from the inner pipe, a device for detecting the leak is provided between the inner pipe and the outer pipe.
【０００４】従来の、この種の二重配管の漏洩検知装置
については、図２に示すような装置があった。図２にお
いて、１は地下タンク、２は外管２Ａと内管２Ｂからな
る二重配管、３はフレキシブルチューブ、４はアダプタ
ー、５はドレインバルブ、１４はマンホール壁、１５及
び１６は取り付けフランジである。[0004] As a conventional type of double pipe leak detecting device, there is a device as shown in FIG. In FIG. 2, 1 is an underground tank, 2 is a double pipe consisting of an outer pipe 2A and an inner pipe 2B, 3 is a flexible tube, 4 is an adapter, 5 is a drain valve, 14 is a manhole wall, and 15 and 16 are mounting flanges. is there.
【０００５】この従来例においては、二重配管２の途中
に検知器ボックス２１を設置し、内管２Ｂからの油の漏
洩を検出する漏洩検知センサー２２を設け、センサー２
２からの検出出力を信号ケーブル２３で制御盤まで伝送
していた。In this conventional example, a detector box 21 is provided in the middle of the double pipe 2, and a leak detection sensor 22 for detecting oil leakage from the inner pipe 2B is provided.
2 was transmitted to the control panel via the signal cable 23.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図２に
示す従来の漏洩検知装置においては、次のような問題が
あった。 （１）二重配管２の途中に漏洩検知センサー２２を収納
する空間（検知器ボックス２１）を設けなければなら
ず、工事に時間とコストが掛かっている。 （２）センサー２２のメンテナンスや作動テストが簡単
に行えない。 （３）センサー２２を取り外さないと実際に漏れ出した
液体が肉眼で確認できないため、センサー２２の誤動作
かどうかの判断がつきにくい。However, the conventional leak detecting device shown in FIG. 2 has the following problems. (1) A space (detector box 21) for accommodating the leak detection sensor 22 must be provided in the middle of the double pipe 2, and the construction takes time and costs. (2) Maintenance and an operation test of the sensor 22 cannot be easily performed. (3) Unless the sensor 22 is removed, the liquid that has actually leaked cannot be confirmed with the naked eye, so it is difficult to determine whether the sensor 22 is malfunctioning.
【０００７】そこで本発明が解決しようとする課題は、
二重配管の途中に余分な装置を設けずに済み、センサー
の取り付け、取り外しが容易に行え、さらに液体が溜ま
っている状況が目視で確認できる漏洩検知装置を提供す
ることにある。Therefore, the problem to be solved by the present invention is as follows:
An object of the present invention is to provide a leak detection device that does not require an extra device in the middle of a double pipe, allows easy attachment and detachment of a sensor, and allows a user to visually check a state in which liquid is accumulated.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するた
め、本発明の漏洩検知装置は、地下タンクと給油機、注
油口、通気口等との接続用配管として用いられる、外管
と内管からなる二重配管の漏洩検知装置において、前記
二重配管の途中に設けた液体取り出し口と液体貯蔵体と
を管にて接続し、前記液体貯蔵体に、前記管を通って同
液体貯蔵体に流れ込んだ液体を検知する液体漏洩検知セ
ンサーを設けたものである。In order to solve the above-mentioned problems, a leak detecting device according to the present invention comprises an outer pipe and an inner pipe which are used as pipes for connecting an underground tank to a refueling machine, a lubrication port, a ventilation port and the like. In the double pipe leak detection device, a liquid outlet provided in the middle of the double pipe and a liquid storage body are connected by a pipe, and the liquid storage body is connected to the liquid storage body through the pipe. A liquid leakage detection sensor for detecting the liquid flowing into the device is provided.
【０００９】前記液体貯蔵体の全部または一部を透明体
とすることにより、内部に溜まった液体が目視で確認で
きるようにする。また、管を透明とすることにより、漏
洩の状況を即座に目視で確認できる。[0009] By making all or a part of the liquid storage body transparent, the liquid accumulated inside can be visually confirmed. Further, by making the pipe transparent, the situation of the leak can be immediately and visually confirmed.
【００１０】[0010]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は本発明の実施例を示すもので、（ａ）は正
面図、（ｂ）はセンサー部の詳細を示す図である。Embodiments of the present invention will be described below. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a front view, and FIG. 1B is a view showing details of a sensor unit.
【００１１】これらの図において、１は地下タンク、２
は外管２Ａと内管２Ｂからなる二重配管、３はフレキシ
ブルチューブ、４はアダプター、５はドレインバルブ、
６は液体取り出し口、７は管、８は液体貯蔵ケース、９
はフロート、１０はフロートのガイドパイプ、１１は漏
洩検知センサー、１２は端子ボックス、１３は信号ケー
ブル、１４はマンホール壁、１５及び１６は取り付けフ
ランジである。In these figures, 1 is an underground tank, 2
Is a double pipe consisting of an outer pipe 2A and an inner pipe 2B, 3 is a flexible tube, 4 is an adapter, 5 is a drain valve,
6 is a liquid outlet, 7 is a tube, 8 is a liquid storage case, 9
Is a float, 10 is a float guide pipe, 11 is a leak detection sensor, 12 is a terminal box, 13 is a signal cable, 14 is a manhole wall, and 15 and 16 are mounting flanges.
【００１２】本実施例では、漏洩検知センサー１１を設
置した液体貯蔵ケース８と二重配管２の途中に設けた液
体取り出し口６とを透明な管７にて接続し、二重配管内
で漏れた液体が管７を通って液体貯蔵ケース８に流れ込
み、一定の量が溜まった場合に漏洩検知センサー１１が
作動するようにしている。In this embodiment, a liquid storage case 8 in which a leak detection sensor 11 is installed and a liquid outlet 6 provided in the middle of the double pipe 2 are connected by a transparent pipe 7 so that a leak is generated in the double pipe. The leaked liquid flows into the liquid storage case 8 through the pipe 7 and the leak detection sensor 11 is activated when a certain amount is accumulated.
【００１３】液体貯蔵ケース８は液体の溜まり具合が目
視にて確認できるように、全体または一部を透明にして
いる。The liquid storage case 8 is entirely or partially transparent so that the state of liquid accumulation can be visually checked.
【００１４】漏洩検知センサー１１は、フロート式、静
電容量式、電極式、電気抵抗式などの漏洩検知センサー
とすることができるが、図１に示すのは、フロート式で
あり、図１（ｂ）に示すように、ガイドパイプ１０に沿
って垂直方向に浮沈自在なフロート９内にマグネット１
１Ａを設け、ガイドパイプ１０内の所定高さの位置にリ
ードスイッチ１１Ｂを設けている。漏洩液体が液体貯蔵
ケース８内の所定レベルに達すると、フロート９のマグ
ネット１１Ａがリードスイッチ１１Ｂに近接し、接点が
作動して端子ボックス１２を経由して信号ケーブル１３
から制御盤に信号が伝送される。The leak detection sensor 11 can be a float type, a capacitance type, an electrode type, an electric resistance type or the like, but FIG. 1 shows a float type, and FIG. As shown in b), the magnet 1 is placed in a float 9 which can float vertically in the vertical direction along the guide pipe 10.
1A, and a reed switch 11B at a predetermined height in the guide pipe 10. When the leaked liquid reaches a predetermined level in the liquid storage case 8, the magnet 11A of the float 9 approaches the reed switch 11B, the contacts are activated, and the signal cable 13 is passed through the terminal box 12.
Transmits a signal to the control panel.
【００１５】このように、ガイドパイプ１０内にリード
スイッチを設け、配線をガイドパイプ１０内を通して端
子ボックス１２に導く構成とすることで、漏洩検知セン
サー１１のメンテナンス等が行い易い構造にした。As described above, by providing the reed switch in the guide pipe 10 and guiding the wiring to the terminal box 12 through the guide pipe 10, the leakage detection sensor 11 is easily maintained.
【００１６】図１に示したのは、フロート式の漏洩検知
センサーであるが、この他にも次のような構成とするこ
とができるが、特にこれらに限定されるものではない。 １．静電容量式近接センサー 液体貯蔵体に設けた静電容量式近接センサーの感知範囲
内に液体が侵入してくると、検知信号を制御盤へ出力す
る。 ２．光センサー 液体貯蔵体の一定位置に光センサーの発光体と受光体を
対称に配置し、液面が同センサー位置を通過した場合に
検知信号を出力する。 ３．ガス検知センサー ガスセンサーを液体貯蔵体に設置し、液体の漏洩により
ガソリンベーパー等のガスが液体貯蔵体内に発生した場
合に、検知信号を制御盤に出力する。 ４．電気抵抗式センサー サーミスタなどの、温度変化により抵抗値が変化する抵
抗素子を液体貯蔵体内の所定位置に設置し、液面が抵抗
素子に浸かったときに抵抗変化を検知して制御盤に出力
する。FIG. 1 shows a float type leak detection sensor, but the following configuration can also be adopted, but the present invention is not particularly limited thereto. 1. Capacitive proximity sensor When liquid enters the sensing range of the capacitive proximity sensor provided in the liquid storage, a detection signal is output to the control panel. 2. Light sensor The light emitter and the light receiver of the light sensor are arranged symmetrically at a fixed position of the liquid storage, and a detection signal is output when the liquid level passes through the sensor position. 3. Gas detection sensor A gas sensor is installed in the liquid storage, and outputs a detection signal to the control panel when gas such as gasoline vapor is generated in the liquid storage due to leakage of the liquid. 4. Electric resistance sensor A resistance element, such as a thermistor, whose resistance value changes with temperature changes is installed at a predetermined position in the liquid storage, and when the liquid level is immersed in the resistance element, the resistance change is detected and output to the control panel. .
【００１７】[0017]
【発明の効果】上述したように、本発明によれば下記の
効果を奏する。 （１）二重配管の途中に設けた液体取り出し口と液体貯
蔵体とを管にて接続し、前記液体貯蔵体に、前記管を通
って同液体貯蔵体に流れ込んだ液体を検知する液体漏洩
検知センサーを設けたことにより、二重配管の途中に余
分な装置を設けずに済むため工事が非常に簡単になり、
コストも大幅に低減された。 （２）また、二重配管とは別に設けた液体貯蔵体に液体
漏洩検知センサーを設けたので、センサーの取り付け、
取り外しが容易に行えるため、メンテナンスや作動テス
トが簡単に行える。 （３）液体貯蔵体の全部または一部を透明体としたこと
により、液体が溜まっている状況が目視で確認できるた
め、誤動作かどうかの判断が瞬時にして判断できる。 （４）管を透明とすることにより、漏洩検知センサーが
動作する前の漏洩の状況を目視で確認することができ
る。As described above, according to the present invention, the following effects can be obtained. (1) A liquid leak that connects a liquid outlet provided in the middle of a double pipe with a liquid reservoir by a pipe, and detects liquid flowing into the liquid reservoir through the pipe into the liquid reservoir. By providing a detection sensor, the construction becomes very simple because there is no need to install extra equipment in the middle of the double piping.
Costs have also been significantly reduced. (2) In addition, since a liquid leak detection sensor is provided in a liquid storage body provided separately from the double pipe, the sensor can be mounted.
Easy removal allows easy maintenance and operation tests. (3) Since all or a part of the liquid storage body is made transparent, it is possible to visually check the state where the liquid is stored, and it is possible to instantaneously judge whether or not a malfunction has occurred. (4) By making the pipe transparent, it is possible to visually check the state of leakage before the leakage detection sensor operates.
【図１】 本発明の実施例を示すもので、（ａ）は正面
図、（ｂ）はセンサー部の詳細を示す図である。FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a view showing details of a sensor unit.
【図２】 従来例を示す正面図である。FIG. 2 is a front view showing a conventional example.
１ 地下タンク、２ 二重配管、２Ａ 外管、２Ｂ 内
管、３ フレキシブルチューブ、４ アダプター、５
ドレインバルブ、６ 液体取り出し口、７ 管、８ 液
体貯蔵ケース、９ フロート、１０ ガイドパイプ、１
１ 漏洩検知センサー、１１Ａ マグネット、１１Ｂ
リードスイッチ、１２ 端子ボックス、１３ 信号ケー
ブル、１４ マンホール壁、１５，１６ 取り付けフラ
ンジ、２１検知器ボックス、２２ 漏洩検知センサー、
２３ 信号ケーブル1 Underground tank, 2 Double piping, 2A outer tube, 2B inner tube, 3 Flexible tube, 4 Adapter, 5
Drain valve, 6 liquid outlet, 7 tubes, 8 liquid storage case, 9 float, 10 guide pipe, 1
1 Leak detection sensor, 11A magnet, 11B
Reed switch, 12 terminal box, 13 signal cable, 14 manhole wall, 15, 16 mounting flange, 21 detector box, 22 leak detection sensor,
23 signal cable
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年５月１日（２０００．５．１）[Submission date] May 1, 2000 (2000.5.1)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Correction target item name] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するた
め、本発明の漏洩検知装置は、地下タンクと給油機、注
油口、通気口等との接続用配管として用いられる、外管
と内管からなる二重配管の漏洩検知装置において、前記
二重配管の途中に設けた液体取り出し口と液体貯蔵体と
を管にて接続し、前記液体貯蔵体に、前記管を通って同
液体貯蔵体に流れ込んだ液体の液位を検知する液体漏洩
検知センサーを設けたものである。In order to solve the above-mentioned problems, a leak detecting device according to the present invention comprises an outer pipe and an inner pipe which are used as pipes for connecting an underground tank to a refueling machine, a lubrication port, a ventilation port and the like. In the double pipe leak detection device, a liquid outlet provided in the middle of the double pipe and a liquid storage body are connected by a pipe, and the liquid storage body is connected to the liquid storage body through the pipe. it is provided with a liquid leak detection sensor for detecting the liquid level of the liquid that has flowed into.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】[0017]
【発明の効果】上述したように、本発明によれば下記の
効果を奏する。 （１）二重配管の途中に設けた液体取り出し口と液体貯
蔵体とを管にて接続し、前記液体貯蔵体に、前記管を通
って同液体貯蔵体に流れ込んだ液体の液位を検知する液
体漏洩検知センサーを設けたことにより、二重配管の途
中に余分な装置を設けずに済むため工事が非常に簡単に
なり、コストも大幅に低減された。 （２）また、二重配管とは別に設けた液体貯蔵体に液体
漏洩検知センサーを設けたので、センサーの取り付け、
取り外しが容易に行えるため、メンテナンスや作動テス
トが簡単に行える。 （３）液体貯蔵体の全部または一部を透明体としたこと
により、液体が溜まっている状況が目視で確認できるた
め、誤動作かどうかの判断が瞬時にして判断できる。 （４）管を透明とすることにより、漏洩検知センサーが
動作する前の漏洩の状況を目視で確認することができ
る。As described above, according to the present invention, the following effects can be obtained. (1) a double middle provided the liquid outlet pipe and a liquid reservoir connected by a tube, detecting the the liquid reservoir, the liquid level of the liquid that has flowed into the liquid reservoir through the tube With the provision of a liquid leak detection sensor that does not require an extra device in the middle of the double piping, the construction is greatly simplified and the cost is greatly reduced. (2) In addition, since a liquid leak detection sensor is provided in a liquid storage body provided separately from the double pipe, the sensor can be mounted,
Easy removal allows easy maintenance and operation tests. (3) Since all or a part of the liquid storage body is made transparent, it is possible to visually check the state where the liquid is stored, and it is possible to instantaneously judge whether or not a malfunction has occurred. (4) By making the pipe transparent, it is possible to visually check the state of leakage before the leakage detection sensor operates.
Claims (3)
との接続用配管として用いられる、外管と内管からなる
二重配管の漏洩検知装置において、前記二重配管の途中
に設けた液体取り出し口と液体貯蔵体とを管にて接続
し、前記液体貯蔵体に、前記管を通って同液体貯蔵体に
流れ込んだ液体を検知する液体漏洩検知センサーを設け
たことを特徴とする漏洩検知装置。1. A double pipe leak detector comprising an outer pipe and an inner pipe, which is used as a pipe for connecting an underground tank to a refueling machine, a lubrication port, a ventilation port, etc., provided in the middle of the double pipe. The liquid outlet and the liquid storage body are connected by a pipe, and the liquid storage body is provided with a liquid leakage detection sensor for detecting liquid flowing into the liquid storage body through the pipe. Leak detection device.
溜まった液体が目視で確認できるように透明体とした請
求項１記載の漏洩検知装置。2. The leak detecting device according to claim 1, wherein all or a part of the liquid storage body is a transparent body so that the liquid stored therein can be visually checked.
漏洩検知装置。3. The leak detecting device according to claim 1, wherein the tube is transparent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11255166A JP3100132B1 (en) | 1999-09-09 | 1999-09-09 | Leak detection device |
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| JP11255166A JP3100132B1 (en) | 1999-09-09 | 1999-09-09 | Leak detection device |
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| JP3100132B1 JP3100132B1 (en) | 2000-10-16 |
| JP2001082700A true JP2001082700A (en) | 2001-03-30 |
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| JP11255166A Expired - Fee Related JP3100132B1 (en) | 1999-09-09 | 1999-09-09 | Leak detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007085349A (en) * | 2005-09-23 | 2007-04-05 | Waertsilae Schweiz Ag | Cylinder lubricating system for reciprocating piston combustion engine |
| KR100836921B1 (en) | 2006-11-10 | 2008-06-11 | 현대자동차주식회사 | Apparatus for connecting fuel tube for fuel bombe in lpg vehicle |
| JP2016105069A (en) * | 2014-11-20 | 2016-06-09 | 株式会社サンフロイント | Double piping structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100329153B1 (en) | 1998-07-08 | 2002-03-21 | 구마모토 마사히로 | Copper alloy for terminals and connectors and method for making same |
| KR101746103B1 (en) * | 2016-12-16 | 2017-06-13 | (주)컴엑스아이 | An apparatus for rocking network module |
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1999
- 1999-09-09 JP JP11255166A patent/JP3100132B1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007085349A (en) * | 2005-09-23 | 2007-04-05 | Waertsilae Schweiz Ag | Cylinder lubricating system for reciprocating piston combustion engine |
| KR100836921B1 (en) | 2006-11-10 | 2008-06-11 | 현대자동차주식회사 | Apparatus for connecting fuel tube for fuel bombe in lpg vehicle |
| JP2016105069A (en) * | 2014-11-20 | 2016-06-09 | 株式会社サンフロイント | Double piping structure |
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| Publication number | Publication date |
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| JP3100132B1 (en) | 2000-10-16 |
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