JP2020041946A - Oil leakage detection device - Google Patents

Oil leakage detection device Download PDF

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JP2020041946A
JP2020041946A JP2018170639A JP2018170639A JP2020041946A JP 2020041946 A JP2020041946 A JP 2020041946A JP 2018170639 A JP2018170639 A JP 2018170639A JP 2018170639 A JP2018170639 A JP 2018170639A JP 2020041946 A JP2020041946 A JP 2020041946A
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drainage basin
oil
water
water surface
oil leak
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JP7133143B2 (en
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和成 山本
Kazunari Yamamoto
和成 山本
池田　稔
Minoru Ikeda
稔 池田
信秋 武本
Nobuaki Takemoto
信秋 武本
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Chugoku Electric Power Co Inc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

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Abstract

To provide an oil leakage detection device with which it is possible to prevent the freezing of water surface of rainwater, etc., in a drainage basin by smaller power consumption and prevent false detection of oil due to the freezing of water surface.SOLUTION: An oil leakage detection device 1 comprises: an oil leakage detector 4 for detecting an oil flowing into a drainage basin 2 and used by being floated on a water surface 3a in the drainage basin 2; and a water surface freezing prevention device 6 for preventing the freezing of the water surface 3a. The water surface freezing prevention device 6 includes an air pump 7, and a bubble generator 10 used by being immersed in water 3 inside of the drainage basin 2, for discharging the air sent from the air pump 7 via an air piping 11 into the water 3 inside of the drainage basin 2 from a plurality of holes 10b and generating air bubbles 5 in the water 3 inside of the drainage basin 2.SELECTED DRAWING: Figure 1

Description

この発明は、漏油検出機能と水面凍結防止機能とを有する漏油検出装置に関する。   The present invention relates to an oil leak detection device having an oil leak detection function and a water surface freezing prevention function.

従来から、発変電所構内には、発変電所構内の雨水等が最終的に集まる排水桝が設けられている。そして、その排水桝には、変圧器や発電機等から漏れ出た油が雨水等に混入しているか否かを検出する漏油検出器が配置されている。この排水桝に配置された漏油検出器は、排水桝内の雨水等に混入した油を検知すると、警報を発すると共に、排水桝内の雨水等を発変電所構外に排出するポンプの作動を停止させ、油が雨水等と共に発変電所構外にポンプで排出されるのを未然に防止するようになっている（特許文献１、２参照）。   Conventionally, a drainage basin in which rainwater and the like in the substation premises finally collect is provided in the substation premises. The drain basin is provided with an oil leak detector that detects whether oil leaked from a transformer, a generator, or the like is mixed in rainwater or the like. When the oil leak detector located in this drainage basin detects oil mixed in rainwater etc. in the drainage basin, it issues an alarm and activates the pump that discharges rainwater etc. in the drainage basin outside the substation premises. The pump is stopped to prevent the oil from being pumped out of the substation premises together with rainwater or the like (see Patent Documents 1 and 2).

図３は、漏油検出器４の概略構造を示す図である。この図３に示すように、漏油検出器４は、排水桝２内の雨水等（以下、水３と略称する）に浮かべた状態で設置され、検知電極１２が３箇所取り付けられ、フロート２３内に収容された検知回路１５から発生する高周波電流により検知電極１２の静電容量を計測している。そして、この漏油検出器４は、排水桝２内の水面３ａ上に油２４が流れ込むと、検知電極１２が油２４を通して水３と接触するため、検知電極１２の静電容量が大きく変化し、この静電容量の変化を検知回路１５で検出・増幅してケーブル１６を介して変換器１７に送り、変換器１７によって接点信号として出力するようになっている（油検知信号を出力する）。また、この漏油検出器４は、冬季の発変電所において、排水桝２内の水面３ａが凍結し、検知電極１２が氷によって水面３ａから離されて空気中に浮いた状態になると、検知電極１２の静電容量が大きく変化するため、排水桝２内の水面３ａ上に油２４が流れ込んだ状態と同様に、静電容量の変化を検知回路１５で検出・増幅し、変換器１７によって接点信号として出力する（油を検知していないのに、油を検知したとの誤検知信号を出力する）。なお、コントローラ１８は、変換器１７から接点信号が出力されると、排水ポンプ１４を停止させると共に、警報装置２０を作動させる（警報を発生させる）ようになっている。   FIG. 3 is a diagram showing a schematic structure of the oil leak detector 4. As shown in FIG. 3, the oil leak detector 4 is installed in a state of being floated on rainwater or the like (hereinafter abbreviated as water 3) in the drainage basin 2, the detection electrodes 12 are attached at three places, and the float 23 is provided. The capacitance of the detection electrode 12 is measured by a high-frequency current generated from the detection circuit 15 housed therein. When the oil 24 flows into the water surface 3 a in the drainage basin 2, the detection electrode 12 comes into contact with the water 3 through the oil 24, so that the capacitance of the detection electrode 12 greatly changes. The change in the capacitance is detected and amplified by the detection circuit 15, sent to the converter 17 via the cable 16, and output as a contact signal by the converter 17 (outputs an oil detection signal). . The oil leak detector 4 detects when the water surface 3a in the drainage basin 2 freezes at the substation in winter and the detection electrode 12 is separated from the water surface 3a by the ice and floats in the air. Since the capacitance of the electrode 12 changes greatly, the change in the capacitance is detected and amplified by the detection circuit 15 in the same manner as when the oil 24 flows on the water surface 3 a in the drainage basin 2. Output as a contact signal (outputs an erroneous detection signal that oil has been detected even though oil has not been detected). When the contact signal is output from the converter 17, the controller 18 stops the drain pump 14 and activates the alarm device 20 (generates an alarm).

このような、排水桝２内の水面３ａの凍結に起因する漏油検出器４の油誤検知を防止する方法としては、図示しない投光器（アイランプ）の光を排水桝２内の水面３ａに照射して、排水桝２内の水面３ａの表面温度を凍結温度以上に上昇させる第１の凍結防止方法と、図示しないヒーター（電熱棒）を排水桝２内の水３に沈め、そのヒーターの発する熱で水３の水温を上昇させることによって、排水桝２内の水面３ａの表面温度を凍結温度以上に上昇させる第２の凍結防止方法と、が採用されていた。   As a method of preventing such erroneous detection of oil by the oil leak detector 4 due to freezing of the water surface 3a in the drainage basin 2, a light of a floodlight (eye lamp) (not shown) is applied to the water surface 3a in the drainage basin 2. Irradiation is performed to raise the surface temperature of the water surface 3a in the drainage basin 2 to a freezing temperature or higher, and a heater (electric heating rod) (not shown) is submerged in the water 3 in the drainage basin 2, A second freezing prevention method has been adopted in which the surface temperature of the water surface 3a in the drainage basin 2 is raised to a freezing temperature or higher by raising the water temperature of the water 3 with the generated heat.

特開２０１４−８９０９１号公報JP 2014-89091 A 特開２０１２−１２７７１５号公報JP 2012-127715 A

しかしながら、第１の凍結防止方法及び第２の凍結防止方法は、共に熱を発生させて排水桝２内の水面３ａの凍結を防止するようになっているため、多大な電力を消費し、電気代が嵩むという問題を有していた。   However, both the first and second freezing prevention methods generate heat to prevent freezing of the water surface 3a in the drainage basin 2, so that a large amount of power is consumed and electric power is consumed. There was a problem that the cost increased.

そこで、本発明は、少ない消費電力で排水桝内の水面の凍結を防止でき、水面の凍結に起因する油の誤検知を防止できる漏油検出装置の提供を目的とする。   Therefore, an object of the present invention is to provide an oil leakage detection device that can prevent freezing of the water surface in a drainage basin with low power consumption and can prevent erroneous detection of oil caused by freezing of the water surface.

本発明は、排水桝２内の水面３ａに浮かせた状態で使用され、前記排水桝２内に流入した油を検知する漏油検出器４と、前記水面３ａの凍結を防止する水面凍結防止装置６と、を備えた漏油検出装置１に関するものである。この発明において、前記水面凍結防止装置１は、エアーポンプ７と、前記排水桝２内の水３に沈められて使用され、前記エアーポンプ７から空気配管１１を介して送られてくる空気を複数の孔１０ｂから前記排水桝２内の水３に放出して、前記排水桝２内の水３に気泡５を発生させる泡発生体１０と、を有している。   The present invention uses an oil leak detector 4 that is used in a state of being floated on a water surface 3a in a drainage basin 2 and detects oil flowing into the drainage basin 2, and a water surface freezing prevention device that prevents freezing of the water surface 3a. 6 relating to the oil leak detection device 1. In the present invention, the water surface freezing prevention device 1 is used by being immersed in the water 3 in the drainage basin 2 with the air pump 7 and a plurality of air sent from the air pump 7 through the air pipe 11. And a foam generator 10 that discharges the water 3 in the drainage basin 2 from the hole 10b to generate bubbles 5 in the water 3 in the drainage basin 2.

本発明に係る漏油検出装置は、エアーポンプから空気配管を介して供給される空気を泡発生体の複数の孔から排水桝内の水中に放出して気泡を生じさせ、その気泡で水面を変動させて、水面の凍結を防止するようになっており、熱を発生させて水面の凍結を防止するものでないため、熱を発生させて排水桝内の雨水等の水面の凍結を防止する場合と比較し、消費電力を低減でき、電気代を低減することが可能になった。   The oil leakage detection device according to the present invention emits air supplied from an air pump through an air pipe from a plurality of holes of a foam generator into water in a drainage basin to generate air bubbles, and the water surface is caused by the air bubbles. It is designed to prevent the freezing of the water surface by fluctuating, and because it does not prevent the freezing of the water surface by generating heat, when the heat is generated to prevent the freezing of the water surface such as rainwater in the drainage basin Power consumption can be reduced and electricity bills can be reduced as compared with.

本発明の第１実施例に係る漏油検出装置を示す図である。It is a figure showing an oil leak detection device concerning a 1st example of the present invention. 本発明の第２実施例に係る漏油検出装置を示す図である。It is a figure showing an oil leak detection device concerning a 2nd example of the present invention. 漏油検出器の概略構造を示す図である。It is a figure showing the schematic structure of an oil leak detector.

以下、本発明の実施例を図面に基づき詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（第１実施例）
図１は、本発明の第１実施例に係る漏油検出装置１を示す図である。この図１に示すように、本実施例に係る漏油検出装置１は、排水桝２内の雨水等（以下、水３と略称する）に浮かべられた漏油検出器４と、排水桝２内の水３に空気を吹き込んで気泡５を生じさせる水面凍結防止装置６と、を有している。なお、漏油検出器４は、例えば、旭化成テクノシステム株式会社の油漏れ検知器（ＣＳＲ−３００５）のような市販品が使用されており、図３に示した漏油検出器４と同一のものであるため、図３に示した漏油検出器４の説明と重複した説明を適宜省略する。 (First embodiment)
FIG. 1 is a diagram showing an oil leakage detection device 1 according to a first embodiment of the present invention. As shown in FIG. 1, an oil leak detection device 1 according to the present embodiment includes an oil leak detector 4 floating on rainwater or the like (hereinafter abbreviated as water 3) in a drainage basin 2 and a drainage basin 2. And a water surface freezing prevention device 6 for blowing air into the water 3 inside to generate bubbles 5. As the oil leak detector 4, for example, a commercially available oil leak detector (CSR-3005) manufactured by Asahi Kasei Technosystem Co., Ltd. is used, and the same oil leak detector 4 as shown in FIG. Therefore, the description overlapping with the description of the oil leak detector 4 shown in FIG. 3 will be appropriately omitted.

水面凍結防止装置６は、排水桝２の外部に設置されたエアーポンプ７と、排水桝２内の底面８側に設置された泡発生体１０と、これらエアーポンプ７と泡発生体１０とを接続する空気配管１１と、を有している。空気配管１１は、エアーポンプ７から延びる弾性変形可能なビニールホース１１ａと、水面３ａの変位に伴って昇降する漏油検出器４の動きをガイドする複数（例えば、３本又は４本）のパイプ状のガイド部材１１ｂと、を有している。そして、複数のガイド部材１１ｂは、下端側（排水桝２の底面８側）が泡発生体１０の外周縁側に固定されている。泡発生体１０は、導電性部材で形成された板状体であり、内部空間１０ａが空気配管１１に接続され、エアーポンプ７から空気配管１１を介して内部空間１０ａに供給された空気が複数の孔１０ｂから水中に放出され、排水桝２内の水３に気泡５を発生させるようになっている。また、泡発生体１０は、排水桝２内の水３が減少して水位が下がり、漏油検出器４の複数の検知電極（油検出部）１２が接触すると、複数の検知電極１２を導通するようになっている。このように、水面凍結防止装置６は、泡発生体１０が排水桝２内の水３に気泡５を生じさせ、排水桝２内の水３の水面（表面）３ａを気泡５によって変動させることができるため、外気温が氷点下（例えば、−２℃程度）になっても排水桝２内の水３の凍結を防止できる。   The water surface freezing prevention device 6 includes an air pump 7 installed outside the drainage basin 2, a foam generator 10 installed on the bottom surface 8 side in the drainage basin 2, and the air pump 7 and the foam generator 10. And an air pipe 11 to be connected. The air pipe 11 includes an elastically deformable vinyl hose 11a extending from the air pump 7 and a plurality (for example, three or four) pipes for guiding the movement of the oil leak detector 4 that moves up and down with the displacement of the water surface 3a. Guide member 11b. The lower ends of the guide members 11 b (the bottom surface 8 of the drainage basin 2) are fixed to the outer peripheral edge of the foam generator 10. The foam generator 10 is a plate-like body formed of a conductive member. The internal space 10a is connected to the air pipe 11, and a plurality of air supplied from the air pump 7 to the internal space 10a via the air pipe 11 is provided. Are discharged into the water from the holes 10b of the water tank and generate bubbles 5 in the water 3 in the drainage basin 2. When the water 3 in the drainage basin 2 decreases and the water level drops, and the plurality of detection electrodes (oil detection units) 12 of the oil leak detector 4 come into contact, the foam generator 10 conducts the plurality of detection electrodes 12. It is supposed to. As described above, the water surface freezing prevention device 6 causes the bubble generator 10 to generate bubbles 5 in the water 3 in the drainage basin 2, and to change the water surface (surface) 3 a of the water 3 in the drainage basin 2 by the bubbles 5. Therefore, freezing of the water 3 in the drainage basin 2 can be prevented even when the outside air temperature falls below the freezing point (for example, about −2 ° C.).

排水桝２は、その底面８の近傍に排水管１３が開口しており、内部の水３が排水管１３の途中に設置された排水ポンプ１４によって発変電所構外に排出されるようになっている。   The drainage basin 2 has a drainage pipe 13 opened in the vicinity of the bottom surface 8, and water 3 inside is drained out of the substation substation by a drainage pump 14 installed in the middle of the drainage pipe 13. I have.

本実施例に係る漏油検出装置１は、排水桝２内に油が流れ込んだ場合、排水桝２内の水３に浮かべられた漏油検出器４の複数の検知電極１２が油を介して水３と接触するため、検知電極１２の静電容量が大きく変化し、この静電容量の変化を検知回路１５で検出・増幅してケーブル１６を介して変換器１７に送り、変換器１７によって接点信号（油検知信号）としてコントローラ１８に出力するようになっている。コントローラ１８は、変換器１７からの接点信号が入力されると、排水ポンプ１４を停止させて、排水桝２内の油が発変電所構外に排出されるのを未然に防止することができる。また、コントローラ１８は、変換器１７からの接点信号が入力されると、警報装置２０を作動させる（例えば、警報ランプを点灯させ、警報音を発する）。これにより、作業者は、排水桝２に油が流れ込んだことを知ることができる。なお、漏油検出器４は、作動スイッチ（図示せず）をオンにすると、電気が外部電源から常時供給されるようになっている。また、エアーポンプ７は、排水桝２の近傍に設置された温度センサ２１が外気温度を検知し、その温度センサ２１が検知した外気温度が所定温度（例えば、０℃）以下になると、コントローラ１８からの作動信号によって通電され、空気を空気配管１１を介して泡発生体１０に供給するようになっている。また、エアーポンプ７は、温度センサ２１が検知した外気温度が所定温度（例えば、０℃）よりも高くなると、コントローラ１８からの作動停止信号によって通電が遮断され、作動を停止するようになっている。   The oil leak detection device 1 according to the present embodiment is configured such that, when oil flows into the drainage basin 2, the plurality of detection electrodes 12 of the oil leak detector 4 floating on the water 3 in the drainage basin 2 via the oil. Due to the contact with the water 3, the capacitance of the detection electrode 12 greatly changes. This change in the capacitance is detected and amplified by the detection circuit 15, sent to the converter 17 via the cable 16, and The signal is output to the controller 18 as a contact signal (oil detection signal). When the contact signal from the converter 17 is input, the controller 18 stops the drainage pump 14 and can prevent oil in the drainage basin 2 from being discharged out of the substation premises. Further, when the contact signal from the converter 17 is input, the controller 18 activates the alarm device 20 (for example, turns on an alarm lamp and emits an alarm sound). Thereby, the worker can know that the oil has flowed into the drainage basin 2. When the operation switch (not shown) is turned on, the oil leak detector 4 is always supplied with electricity from an external power supply. In addition, when the temperature sensor 21 installed in the vicinity of the drainage basin 2 detects the outside air temperature and the outside air temperature detected by the temperature sensor 21 becomes lower than a predetermined temperature (for example, 0 ° C.), the controller 18 of the air pump 7 operates. The air is supplied to the foam generator 10 through the air pipe 11 by the activation signal from the air conditioner. In addition, when the outside air temperature detected by the temperature sensor 21 becomes higher than a predetermined temperature (for example, 0 ° C.), the air pump 7 is de-energized by an operation stop signal from the controller 18 and stops operating. I have.

以上のような構造の本実施例に係る漏油検出装置１は、外気温度が−２℃程度まで低下しても、水面凍結防止装置６が排水桝２内の水３に気泡５を生じさせるため、排水桝２内の水面３ａが気泡によって変動し、排水桝２内の水面３ａの凍結が防止され、漏油検出器４が水面凍結に起因する誤った接点信号（油検知信号）を出力することがない。なお、本実施例に係る漏油検出装置１は、水面凍結防止装置６の作動中（排水桝２内の水３に気泡５が生じている状態）と、水面凍結防止装置６の作動停止時（排水桝２内の水３に気泡５が生じていない状態）とにおいて、漏油検出器４の油検知性能に変化（差）がないことを動作実証試験で確認した。   In the oil leakage detection device 1 according to the present embodiment having the above-described structure, the water surface freezing prevention device 6 generates bubbles 5 in the water 3 in the drainage basin 2 even when the outside air temperature decreases to about −2 ° C. Therefore, the water surface 3a in the drainage basin 2 fluctuates due to bubbles, the water surface 3a in the drainage basin 2 is prevented from freezing, and the oil leak detector 4 outputs an erroneous contact signal (oil detection signal) due to the water surface freezing. Never do. The oil leak detection device 1 according to the present embodiment operates during the operation of the water surface freezing prevention device 6 (the state in which bubbles 5 are generated in the water 3 in the drainage basin 2) and when the operation of the water surface freezing prevention device 6 is stopped. The operation verification test confirmed that there was no change (difference) in the oil detection performance of the oil leak detector 4 between (the state in which no bubbles 5 were generated in the water 3 in the drainage basin 2).

また、本実施例に係る漏油検出装置１は、エアーポンプ７から空気配管１１を介して供給される空気を泡発生体１０の複数の孔１０ｂから排水桝２内の水３に放出して気泡５を生じさせ、その気泡５で水面３ａを変動させて、水面３ａの凍結を防止するようになっており、熱を発生させて水面３ａの凍結を防止するものでないため、従来の第１の凍結防止方法及び第２の凍結防止方法のような熱を発生させて排水桝２内の水面３ａの凍結を防止する場合と比較し、消費電力を低減でき、電気代を低減することが可能になった。例えば、従来の第１の凍結防止方法は、２７０Ｗの投光器を２灯（合計５４０Ｗ）使用して、排水桝２内の水面３ａの凍結を防止していた。また、従来の第２の凍結防止方法は、５００Ｗのヒーター（電熱棒）を排水桝２内の水３に沈め、そのヒーターで排水桝２内の水３を加熱して水面３ａの凍結を防止していた。このような従来の第１の凍結防止方法及び第２の凍結防止方法に対し、本実施例に係る漏油検出装置１は、２．６Ｗのエアーポンプ７で排水桝２内の水面３ａの凍結防止を図ることができ、消費電力を低減でき、電気代を低減することが可能になった。   Further, the oil leakage detection device 1 according to the present embodiment discharges the air supplied from the air pump 7 via the air pipe 11 to the water 3 in the drainage basin 2 from the plurality of holes 10b of the foam generator 10. A bubble 5 is generated, and the water surface 3a is fluctuated by the bubble 5 to prevent freezing of the water surface 3a. Since this does not generate heat to prevent freezing of the water surface 3a, the first conventional method is used. The power consumption can be reduced and the electricity bill can be reduced as compared with the case where the water surface 3a in the drainage basin 2 is prevented from freezing by generating heat as in the freeze prevention method and the second freeze prevention method. Became. For example, the first conventional freezing prevention method uses two 270W floodlights (540W in total) to prevent the water surface 3a in the drainage basin 2 from freezing. In the second conventional method for preventing freezing, a heater (electric heating rod) of 500 W is submerged in water 3 in drainage basin 2 and water 3 in drainage basin 2 is heated by the heater to prevent freezing of water surface 3 a. Was. In contrast to the conventional first and second methods for preventing freezing, the oil leak detection device 1 according to the present embodiment uses the 2.6 W air pump 7 to freeze the water surface 3a in the drainage basin 2. Prevention, power consumption can be reduced, and electricity costs can be reduced.

（第２実施例）
図２は、本発明の第２実施例に係る漏油検出装置１を示す図である。この図２に示す漏油検出装置１は、エアーポンプ７を漏油検出器４のフロート上部壁２２の中央（漏油検出器４の重心位置）に取り付けたものであり、エアーポンプ７が漏油検出器４と一体となって排水桝２内を移動（昇降）するようになっている。このような本実施例に係る漏油検出装置１は、エアーポンプ７を漏油検出器４に取り付けた構成を除き、他の構成が第１実施例に係る漏油検出装置１と同様である。したがって、本実施例に係る漏油検出装置１は、第１実施例に係る漏油検出装置１と同様の構成部分に同一符号を付し、第１実施例に係る漏油検出装置１の説明と重複する説明を省略する。 (Second embodiment)
FIG. 2 is a diagram showing an oil leakage detection device 1 according to a second embodiment of the present invention. The oil leak detection device 1 shown in FIG. 2 has an air pump 7 attached to the center of the float upper wall 22 of the oil leak detector 4 (the position of the center of gravity of the oil leak detector 4). It moves (elevates) in the drainage basin 2 integrally with the oil detector 4. The configuration of the oil leak detection device 1 according to the present embodiment is the same as that of the oil leak detection device 1 according to the first embodiment except for the configuration in which the air pump 7 is attached to the oil leak detector 4. . Therefore, in the oil leak detection device 1 according to the present embodiment, the same components as those in the oil leak detection device 1 according to the first embodiment are denoted by the same reference numerals, and the description of the oil leak detection device 1 according to the first embodiment is given. Descriptions that are the same as those described above will be omitted.

本実施例に係る漏油検出装置１は、第１実施例に係る漏油検出装置１と同様の効果を得ることができる。   The oil leak detection device 1 according to the present embodiment can obtain the same effect as the oil leak detection device 1 according to the first embodiment.

（その他の実施例）
本発明に係る漏油検出装置１は、第１及び第２実施例に係る漏油検出装置１の構成に限定されるものでなく、第１及び第２実施例に係る漏油検出装置１と同様の効果を得られる範囲内において、構成を適宜変更してもよい。例えば、第１及び第２実施形態に係る漏油検出装置１は、エアーポンプ７の作動制御（オン・オフ制御）を温度センサ２１の検知結果に基づいて行うようになっているが、エアーポンプ７のオン・オフを手動スイッチ（図示せず）の操作で行うようにしてもよい。 (Other Examples)
The oil leak detection device 1 according to the present invention is not limited to the configuration of the oil leak detection device 1 according to the first and second embodiments, but includes the oil leak detection device 1 according to the first and second embodiments. The configuration may be appropriately changed as long as a similar effect is obtained. For example, the oil leakage detection device 1 according to the first and second embodiments controls the operation (on / off control) of the air pump 7 based on the detection result of the temperature sensor 21. 7 may be turned on and off by operating a manual switch (not shown).

また、本発明に係る漏油検出装置１は、第１及び第２実施例に係る漏油検出装置１の構成に限定されるものでなく、ガイド部材１１ｂを省略し、空気配管１１を弾性変形可能な合成樹脂製ホース（例えば、ビニールホース１１ａ）のみで構成してもよい。   Further, the oil leak detecting device 1 according to the present invention is not limited to the configuration of the oil leak detecting device 1 according to the first and second embodiments, and the guide member 11b is omitted and the air pipe 11 is elastically deformed. It may be constituted only by a possible synthetic resin hose (for example, the vinyl hose 11a).

１……漏油検出装置、２……排水桝、３……水、３ａ……水面、４……漏油検出器、５……気泡、６……水面凍結防止装置、７……エアーポンプ、１０……泡発生体、１０ｂ……孔、１１……空気配管   DESCRIPTION OF SYMBOLS 1 ... Oil leak detecting device, 2 ... Drainage basin, 3 ... Water, 3a ... Water surface, 4 ... Oil leak detector, 5 ... Bubbles, 6 ... Water surface freezing prevention device, 7 ... Air pump 10, foam generator, 10b hole, 11 air piping

Claims (4)

排水桝内の水面に浮かせた状態で使用され、前記排水桝内に流入した油を検知する漏油検出器と、前記水面の凍結を防止する水面凍結防止装置と、を備えた漏油検出装置において、
前記水面凍結防止装置は、
エアーポンプと、
前記排水桝内の水に沈められて使用され、前記エアーポンプから空気配管を介して送られてくる空気を複数の孔から前記排水桝内の水に放出して、前記排水桝内の水に気泡を発生させる泡発生体と、を有する、
ことを特徴とする漏油検出装置。 An oil leak detector that is used in a state of being floated on the water surface in a drainage basin and includes an oil leak detector that detects oil flowing into the drainage basin, and a water surface freezing prevention device that prevents freezing of the water surface At
The water surface freezing prevention device,
An air pump,
It is used by being immersed in the water in the drainage basin, discharges air sent from the air pump through an air pipe to the water in the drainage basin from a plurality of holes, and supplies the water in the drainage basin with water. And a foam generator for generating bubbles.
An oil leak detection device, characterized in that: 前記水面凍結防止装置は、前記排水桝内の水位の変化に伴う前記漏油検出器の昇降をガイドするガイド部材が前記空気配管の一部を構成する、
ことを特徴とする請求項１に記載の漏油検出装置。 The water surface freeze prevention device, a guide member that guides the elevation of the oil leak detector with a change in the water level in the drainage basin constitutes a part of the air pipe,
The oil leakage detection device according to claim 1, wherein: 前記泡発生体は、導電性部材で形成され、前記排水桝内の水位が下がり、前記漏油検出器の複数の油検出部が接触すると、前記複数の油検出部を導通する、
ことを特徴とする請求項１に記載の漏油検出装置。 The foam generator is formed of a conductive member, the water level in the drainage basin drops, when the plurality of oil detection units of the oil leak detector contact, conducts the plurality of oil detection units,
The oil leakage detection device according to claim 1, wherein: 前記エアーポンプは、前記漏油検出器に取り付けられた、
ことを特徴とする請求項１から請求項３のいずれか１項に記載の漏油検出装置。 The air pump is attached to the oil leak detector,
The oil leakage detection device according to any one of claims 1 to 3, wherein:
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123035U (en) * 1979-02-21 1980-09-01
JPS615426U (en) * 1984-06-14 1986-01-13 東京電力株式会社 Float type level detector for oil detection
JPS6255124U (en) * 1985-09-26 1987-04-06
JP2012127715A (en) * 2010-12-14 2012-07-05 Chugoku Electric Power Co Inc:The Floating type oil leak detecting device
JP2016064392A (en) * 2014-07-30 2016-04-28 三菱マテリアル株式会社 Drainage system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123035U (en) * 1979-02-21 1980-09-01
JPS615426U (en) * 1984-06-14 1986-01-13 東京電力株式会社 Float type level detector for oil detection
JPS6255124U (en) * 1985-09-26 1987-04-06
JP2012127715A (en) * 2010-12-14 2012-07-05 Chugoku Electric Power Co Inc:The Floating type oil leak detecting device
JP2016064392A (en) * 2014-07-30 2016-04-28 三菱マテリアル株式会社 Drainage system

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