JPH0454168B2 - - Google Patents
Info
- Publication number
- JPH0454168B2 JPH0454168B2 JP57216646A JP21664682A JPH0454168B2 JP H0454168 B2 JPH0454168 B2 JP H0454168B2 JP 57216646 A JP57216646 A JP 57216646A JP 21664682 A JP21664682 A JP 21664682A JP H0454168 B2 JPH0454168 B2 JP H0454168B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- detection
- optical
- optical fibers
- light
- 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 - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims description 43
- 238000001514 detection method Methods 0.000 claims description 36
- 230000003287 optical effect Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 3
- 239000002195 soluble material Substances 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
- G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
- G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
本発明は、遠隔監視に適した光学式漏洩油検出
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical leakage oil detection device suitable for remote monitoring.
従来、油貯蔵所等の油の漏洩の監視には、第７
図に示したような装置、つまり監視所とそれぞれ
リード線ｌ，ｌにより接続した発光素子Ｌと受光
素子Ｓを垂直軸Ｙをはさんで一定の角度θをもつ
て対向配設した油検出装置を用い、検出装置の下
方に油Ｏが流下して来ると、発光素子Ｌからの光
を油Ｏの表面で反射させて受光素子Ｓに入射する
ようにして検出していたが、雨水等の水に存在に
よつても作動して検出ミスが生じるばかりでな
く、発光素子Ｌへリード線ｌによつて作動電圧を
供給する関係上、防爆構造を採る必要が生じて、
設置コストが高くなるという問題があつた。 Conventionally, for monitoring oil leaks from oil storage facilities, etc.
The device shown in the figure is an oil detection device in which a light-emitting element L and a light-receiving element S are connected to a monitoring station by lead wires l and l, respectively, and are arranged facing each other at a constant angle θ across a vertical axis Y. When the oil O flows down below the detection device, the light from the light emitting element L is reflected on the surface of the oil O and is detected by entering the light receiving element S. Not only does it operate due to the presence of water, causing detection errors, but it also becomes necessary to adopt an explosion-proof structure because the operating voltage is supplied to the light emitting element L through the lead wire L.
There was a problem that the installation cost was high.
このような問題を解決するために、実開昭57−
42933号公報に示されたような一端がそれぞれ発
光手段と受光手段に接続された２本の光フアイバ
ーの各他端を、芯合せした状態で油溶性材料によ
り接合し、漏洩した油により接合材で油溶性材料
の溶解により光フアイバーの光軸を外させて検出
するようにしたものも提案されている。 In order to solve such problems,
The other ends of two optical fibers, one end of which is connected to a light emitting means and a light receiving means, respectively, as shown in Publication No. 42933, are joined with an oil-soluble material with their centers aligned, and the joining material is removed by the leaked oil. A method has also been proposed in which the optical axis of the optical fiber is removed by dissolving an oil-soluble material for detection.
しかしながら、油溶性材料が溶融して光フアイ
バーの光軸がずれるのを待つて初めて検出が可能
となるため、検出までに時間が掛かるばかりでな
く、設置場所によつては例え油溶性材料が溶解し
たとしても光フアイバーの接合が外れると限ら
ず、検出ミスを起こす恐れがあり、さらには２本
の光フアイバーが油溶性材料だけで接合されてい
るので、光フアイバーに外力が作用した場合に
は、光フアイバー間で光軸ずれを起こして誤検出
を起こす恐れがある。 However, detection is only possible after the oil-soluble material has melted and the optical axis of the optical fiber has shifted, so not only does it take time to detect it, but depending on the installation location, even if the oil-soluble material has melted, detection is possible. Even if the optical fibers are joined together, there is a risk that the optical fibers will become disconnected and a detection error may occur.Furthermore, since the two optical fibers are joined only with an oil-soluble material, if an external force is applied to the optical fibers, , there is a risk of optical axis misalignment between the optical fibers, resulting in false detection.
本発明はこのような問題に鑑みてなされたもの
であつて、その目的とするところは、応答性が速
く、しかも信頼性の高い検出を可能ならしめる光
学式漏洩油検出装置を提供することにある。 The present invention has been made in view of these problems, and its purpose is to provide an optical leakage oil detection device that has quick response and enables highly reliable detection. be.
このような問題を解消するために本発明におい
ては、漏洩油の流入口が穿設されたケースに、２
本の検出用光フアイバーの各一端を光軸を合わ
せ、かつ相対的に離反させる方向にバネ部材で付
勢して油軟化物質により固定して収容すると共
に、ケースの両端に、一端がそれぞれ発光手段と
受光手段に接続された２本の伝送用光フアイバー
の各他端と２本の検出用光フアイバーの各他端と
を接続するための光フアイバーコネクタ部を備え
るようにし、外力の作用をケースにより阻止して
誤動作を防止するとともに、油の漏洩が生じた段
階でバネ部材により強制的に芯合せを外して速や
かでかつ確実な検出を行なう。 In order to solve such problems, in the present invention, two
One end of each optical fiber for detecting books is aligned with the optical axis, biased by a spring member in the direction of moving them away from each other, fixed with an oil softening substance, and housed, and one end emits light at each end of the case. Optical fiber connectors are provided for connecting the other ends of the two transmission optical fibers connected to the means and the light receiving means and the other ends of the two detection optical fibers, thereby preventing the action of external force. The case prevents malfunctions, and when oil leaks occur, a spring member forcibly removes the center alignment for prompt and reliable detection.
そこで、以下に本発明の詳細を図示した実施例
に基づいて説明する。 Therefore, details of the present invention will be explained below based on illustrated embodiments.
第１図は、本発明の一実施例を示す装置の断面
図であつて、図中符号１は、本発明の特徴部分を
なす油検出装置で、光継手を形成する２本の検出
用光フアイバー２，３の各端部を、油の流入孔
４，４が穿設された円筒状ケース５内に配設して
端部を接触対向させると当時に、これらの一方の
光フアイバー３にバネ材６をもつて軸心方向と直
交する方向に弾圧力を付与させ、このような状態
の下で、ケース５内にパラフイン、ゴム、ろう、
ワツクス等の油によつて溶解または軟化する高分
子物質（以下、油軟化物質と呼ぶ）７を充填して
光フアイバー２，３の各端部を一体的に固定した
ものである。図中符号８，８は、ケース５の両端
に形成した光フアイバーコネクタ部で、ケース５
に収容されている２本の検出用光フアイバー２，
３の他端を伝送用光フアイバーＦ，Ｆの端部に接
続するものである。これら伝送用光フアイバー
Ｆ，Ｆの他端には、それぞれ発光素子、受光素子
が接続されており、検出用光フアイバー２，３に
発光素子からの光を入射させ、また検出用光フア
イバー３，２からの光を受光素子で検出するよう
になつている。 FIG. 1 is a cross-sectional view of a device showing an embodiment of the present invention, and reference numeral 1 in the figure is an oil detection device which is a characteristic part of the present invention, and two detection lights forming an optical joint are shown. When the ends of the fibers 2 and 3 are arranged in a cylindrical case 5 in which oil inflow holes 4 and 4 are formed and the ends are brought into contact with each other, one of the optical fibers 3 The spring material 6 is used to apply an elastic force in a direction perpendicular to the axial direction, and under such conditions, paraffin, rubber, wax, etc.
Each end of the optical fibers 2 and 3 is fixed integrally by filling a polymer substance 7 (hereinafter referred to as an oil softening substance) that dissolves or softens with oil such as wax. Reference numerals 8 and 8 in the figure are optical fiber connectors formed at both ends of the case 5.
Two detection optical fibers 2 housed in the
3 is connected to the ends of transmission optical fibers F, F. A light emitting element and a light receiving element are connected to the other ends of these transmission optical fibers F and F, respectively, and light from the light emitting element is incident on the detection optical fibers 2 and 3. The light from 2 is detected by a light receiving element.
次に、このように構成した装置を、給油所の油
漏洩を監視するために適用した場合に例を採つ
て、その動作を説明する。 Next, the operation of the device configured as described above will be explained using an example in which the device is applied to monitor oil leakage at a gas station.
第３図は、本発明装置が施こされる給油所の地
下構造を示すもので、地下タンク９、及びここか
ら軽量機１０に延びる管路系１１の漏洩を起しや
すい箇所の下方には、パイプ１２によつて地上に
連通する検査孔１３，１３が設けられ、これらの
検査孔１３には上述した検出装置１が設けられて
いて、ここから監視器（第４図）の表示盤１４に
内蔵された発光素子Ｌと受光素子Ｓに伝送用光フ
アイバーＦ，Ｆが接続している。 FIG. 3 shows the underground structure of a gas station where the device of the present invention is installed. Below the underground tank 9 and the conduit system 11 extending from there to the light aircraft 10, there is a leak-prone area. , inspection holes 13, 13 communicating with the ground through pipes 12 are provided, and the above-mentioned detection device 1 is provided in these inspection holes 13, from which a display panel 14 of a monitor (FIG. 4) is provided. Transmission optical fibers F, F are connected to a light emitting element L and a light receiving element S built in the.
上述した実施例において、監視器の発光素子Ｌ
から光を検出装置１内に送り込むと、油漏れが生
じていない正常な状態の下では、光フアイバー
２，３の端部が互いに接触した状態で油軟化物質
に固定されているため、一方の光フアイバーから
他方の光フアイバーに伝達されて表示盤の受光素
子Ｓ側に送り返されて正常な状態が視認される。
他方、このような状態のもとで給油設備から油が
漏れると、この油は、検査孔１３に流れ込んで検
出装置１を浸漬し、検出装置１の流入孔４，４か
ら内部に侵入して油軟化物質７を軟化または溶解
してバネ材６に蓄積されていた力を開放させて光
継手の一方を形成している光フアイバー３を押曲
げ、互いの端部間接触を解いて光の伝達を遮断し
（第２図）、油漏れが発生したことを監視器に伝え
る。この状態で、伝送用光フアイバーＦ，Ｆに外
力が作用すると、この外力はケース５のコネクタ
部８，８により受止められ、かつ検出用光フアイ
バー２，３が伝送用光フアイバーＦ，Ｆとは分離
されているから、検出用光フアイバー２，３に外
力が及ぶのが防止される。これにより光フアイバ
ー２，３の外力による光軸ズレが防止されること
になる。 In the embodiment described above, the light emitting element L of the monitor
When light is sent into the detection device 1 from The light is transmitted from one optical fiber to the other optical fiber and sent back to the light receiving element S side of the display panel, so that the normal state can be visually recognized.
On the other hand, if oil leaks from the oil supply equipment under such conditions, this oil will flow into the inspection hole 13, immerse the detection device 1, and enter the interior through the inflow holes 4, 4 of the detection device 1. The oil softening substance 7 is softened or melted to release the force accumulated in the spring material 6, and the optical fiber 3 forming one side of the optical joint is bent and the contact between the ends is released and the light is emitted. Shut off the transmission (Figure 2) and notify the monitor that an oil leak has occurred. In this state, when an external force acts on the transmission optical fibers F, F, this external force is received by the connector parts 8, 8 of the case 5, and the detection optical fibers 2, 3 are connected to the transmission optical fibers F, F. Since the detection optical fibers 2 and 3 are separated from each other, external forces are prevented from being applied to the detection optical fibers 2 and 3. This prevents the optical axis of the optical fibers 2 and 3 from shifting due to external force.
なお、上述した実施例においては、検出装置に
伝送用光フアイバーを介して専用の発光素子及び
受光素子を接続した状態で使用するようにした
が、第５図に示したように伝送用光フアイバーの
端部に集光用光学系１５及び発散用光学系１６を
取付けておき、点検時に集光用光学系１５を介し
て懐中電灯Ｄの光を光フアイバー内に入射し、発
散用光学系１６から光が出て来るか否かによつて
漏洩の有無を確認することができる。 In the above-mentioned embodiment, the dedicated light emitting element and light receiving element were connected to the detection device via the transmission optical fiber, but as shown in FIG. A condensing optical system 15 and a diverging optical system 16 are attached to the ends of the optical fiber, and during inspection, the light from the flashlight D is input into the optical fiber through the condensing optical system 15, and the divergent optical system 16 The presence or absence of leakage can be confirmed by whether or not light comes out.
以上説明したように本発明においては、漏洩油
の流入口が穿設されたケースに、２本の検出用光
フアイバーの各一端を光軸を合わせ、かつ相対的
に離反させる方向にバネ部材で付勢して油軟化物
質により固定して収容すると共に、ケースの両端
に、一端がそれぞれ発光手段と受光手段に接続さ
れた２本の伝送用光フアイバーの各他端と２本の
検出用光フアイバーの各他端とを接続するための
光フアイバーコネクタ部を備えたので、伝送用光
フアイバーに作用した外力をケースにより受止め
て検出用光フアイバーにまで及ぶのを阻止して検
出用光フアイバーの光軸ズレを防止でき、また油
の漏洩が生じた段階ではバネ部材により検出用光
フアイバーの光軸を強制的にズレさせることがで
きるので、漏洩油を確実に検出することができ
る。 As explained above, in the present invention, one end of each of the two detection optical fibers is aligned with the optical axis of the case in which the leaked oil inlet is drilled, and a spring member is used to move the ends of the two detection optical fibers in the direction of moving them apart from each other. The case is energized and fixed with an oil softening substance, and is housed at both ends of the case, with one end connected to a light emitting means and a light receiving means, respectively, and two detection lights. Equipped with an optical fiber connector to connect each other end of the fiber, the case receives external force acting on the transmission optical fiber and prevents it from reaching the detection optical fiber. Since the optical axis of the detection optical fiber can be forcibly shifted by the spring member when oil leakage occurs, leaked oil can be reliably detected.
第１図は、本発明の一実施例を示す装置の断面
図、第２図は、同上装置の動作時の状態を示す断
面図、第３図は、同上装置が施された給油所の油
漏洩監視システムの一例を示す地下断面図、第４
図は、表示盤の一例を示す斜視図、第５図は、同
上装置への光投入射部の一例を示す断面図、及び
第６図は、従来の光学式油検出装置の一例を示す
概要図である。
１……検出装置、２，３……検出用光フアイバ
ー、４……油流入口、５……ケース、７……油軟
化物質、Ｆ……伝送用光フアイバー。
FIG. 1 is a cross-sectional view of a device showing an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the operating state of the same device, and FIG. Underground cross-sectional diagram showing an example of a leak monitoring system, No. 4
FIG. 5 is a perspective view showing an example of a display panel, FIG. 5 is a sectional view showing an example of a light input part to the above device, and FIG. 6 is an outline showing an example of a conventional optical oil detection device. It is a diagram. 1... Detection device, 2, 3... Optical fiber for detection, 4... Oil inlet, 5... Case, 7... Oil softening substance, F... Optical fiber for transmission.
Claims (1)
の検出用光フアイバーの各一端を光軸を合わせ、
かつ相対的に離反させる方向にバネ部材で付勢し
て油軟化物質により固定して収容すると共に、前
記ケースの両端に、一端がそれぞれ発光手段と受
光手段に接続された２本の伝送用光フアイバーの
各他端と前記２本の検出用光フアイバーの各他端
とを接続するための光フアイバーコネクタ部を備
えてなる光学式漏洩油検出装置。1 Align the optical axis of each end of the two detection optical fibers with the case where the leaked oil inlet is drilled,
The case is biased by a spring member in a direction to separate them from each other and fixed by an oil softening substance, and is housed therein, and two transmission lights each having one end connected to a light emitting means and a light receiving means are installed at both ends of the case. An optical leakage oil detection device comprising an optical fiber connector section for connecting each other end of the fiber to each other end of the two detection optical fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21664682A JPS59105533A (en) | 1982-12-09 | 1982-12-09 | Optical device for detecting leakage of oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21664682A JPS59105533A (en) | 1982-12-09 | 1982-12-09 | Optical device for detecting leakage of oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59105533A JPS59105533A (en) | 1984-06-18 |
| JPH0454168B2 true JPH0454168B2 (en) | 1992-08-28 |
Family
ID=16691696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21664682A Granted JPS59105533A (en) | 1982-12-09 | 1982-12-09 | Optical device for detecting leakage of oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59105533A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6370052U (en) * | 1986-10-27 | 1988-05-11 | ||
| DE8902073U1 (en) * | 1989-02-22 | 1989-07-06 | Kabelwerke Reinshagen Gmbh, 5600 Wuppertal, De | |
| US5378889A (en) * | 1993-09-23 | 1995-01-03 | California Lightwave Laboratories, Inc. | Method and apparatus for detecting hydrocarbon fuels in a vapor state with an absorber-expander member |
| CA2641048C (en) | 2006-02-02 | 2014-09-09 | Elmer H. Hara | Pipeline leakage-sensing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742933B2 (en) * | 1973-06-06 | 1982-09-11 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742933U (en) * | 1980-08-25 | 1982-03-09 |
-
1982
- 1982-12-09 JP JP21664682A patent/JPS59105533A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742933B2 (en) * | 1973-06-06 | 1982-09-11 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59105533A (en) | 1984-06-18 |
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