JP4502215B2 - Prevention structure for electric field detector - Google Patents

Prevention structure for electric field detector Download PDF

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JP4502215B2
JP4502215B2 JP2006113278A JP2006113278A JP4502215B2 JP 4502215 B2 JP4502215 B2 JP 4502215B2 JP 2006113278 A JP2006113278 A JP 2006113278A JP 2006113278 A JP2006113278 A JP 2006113278A JP 4502215 B2 JP4502215 B2 JP 4502215B2
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electric field
field detector
water
electrode
housing
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JP2007285863A (en
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恵 廣田
陽子 寺西
敦 佐藤
健二 飯島
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Shimadzu Corp
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Description

この発明は、水中（特に海中）に沈められて水中の微小電位差を測定するのに使用される電界検出器の防生対策構造に関する。   The present invention relates to a protection structure for an electric field detector that is submerged in water (especially in the sea) and used to measure a minute potential difference in water.

従来、例えば１軸電界センサは、図４に示すようなものである。この電界センサ８０は、筐体８１内に差動増幅器や増幅器等で構成される電界センサ増幅部（図示せず）が内蔵され、筐体８１の両端部にそれぞれ電極を内蔵する電極部８２が設けられ、筐体８１外部の水が進入して電極と接触するように各電極部８２に取水口８３が形成され、各電極部８２の電極に水が接触することにより得られる両電極部８２での電位差が電界センサ増幅部で測定・増幅され、その出力がケーブル８４を通じて電界センサ８０の外部に導出されるように構成されている（例えば、特許文献１参照）。   Conventionally, for example, a uniaxial electric field sensor is as shown in FIG. In this electric field sensor 80, an electric field sensor amplifying unit (not shown) constituted by a differential amplifier, an amplifier, or the like is built in a casing 81, and electrode sections 82 each having electrodes built in both ends of the casing 81 are provided. A water intake 83 is formed in each electrode part 82 so that water outside the housing 81 enters and comes into contact with the electrodes, and both electrode parts 82 obtained by water contacting the electrodes of each electrode part 82 are provided. Is measured and amplified by the electric field sensor amplifying unit, and the output thereof is led out of the electric field sensor 80 through the cable 84 (see, for example, Patent Document 1).

この電界センサ８０は、水中の微小電位差を測定するのに使用される。   The electric field sensor 80 is used to measure a minute potential difference in water.

特開２００１−２２８２５７号公報JP 2001-228257 A

ところで、上記のような電界センサ８０では、取水口８３は電極部８２の奥に向かって入り込んでいるので、取水口８３の付近を格好の住処として海生生物が付着したり、生息したりすることがあり、それが原因で雑音が発生し、測定に悪影響を及ぼすという問題点があった。   By the way, in the electric field sensor 80 as described above, since the water intake 83 is inserted toward the back of the electrode portion 82, marine organisms attach or inhabit in the vicinity of the water intake 83 as a suitable residence. In some cases, noise is generated, which adversely affects the measurement.

本発明は、そのような問題点に着目してなされたものであって、雑音源となる水生生物の付着や生息を防止した電界検出器の防生対策構造を提供することを目的としている。   The present invention has been made paying attention to such problems, and an object of the present invention is to provide a structure for preventing the occurrence of electric field detectors that prevents the attachment and inhabitation of aquatic organisms that are noise sources.

前記課題を解決するために、この発明の電界検出器は、筐体内に電極を配置し、筐体外部と電極を連通する取水口を形成し、筐体外部の水が取水口を通じて電極に接触することにより得られる電位を測定し、その測定値をリード線で筐体外部に導出するように構成した電界検出器において、前記取水口に嵌合された防生フィルタを設け、前記防生フィルタは、前記取水口への水生生物の付着や生息を抑制する円柱状の防生ゴムで形成されており、当該円柱の両平面間を連通させるように水路としての１箇所以上の***が設けられていることを特徴とする。 In order to solve the above-mentioned problems, the electric field detector according to the present invention has an electrode disposed in the housing, forms a water intake port that communicates the electrode with the outside of the housing, and water outside the housing contacts the electrode through the water intake port. In the electric field detector configured to measure the potential obtained by conducting the measurement, and to lead the measured value to the outside of the housing with a lead wire, the biopsy filter fitted to the water intake is provided, Is formed of a cylindrical rubber-like rubber that suppresses the attachment and inhabiting of aquatic organisms to the water intake , and is provided with one or more small holes as water channels so as to communicate between both planes of the cylinder. It is characterized by being.

この電界検出器の防生対策構造では、水生生物が取水口付近に付着したり、生息したりするのが防生フィルタにより抑制され、水生生物による雑音の発生を効果的に阻止できる。   In this anti-seismic structure of the electric field detector, the aquatic organisms are prevented from adhering to or inhabiting the vicinity of the water intake, and the generation of noise by the aquatic organisms can be effectively prevented.

また、この発明の電界検出器は、前記筐体は、円筒状の外筒を有し、当該外筒の一端部に前記取水口及び前記防生フィルタが設けられるとともに、他端部から前記リード線が引き出されていることを特徴とする。 Further, in the electric field detector according to the present invention, the casing has a cylindrical outer cylinder, the water intake and the protection filter are provided at one end of the outer cylinder, and the lead from the other end. The line is drawn out .

この発明の電界検出器の防生対策構造によれば、取水口付近に防生フィルタが設けられているので、次の効果が得られる。   According to the anti-protection structure of the electric field detector of the present invention, since the anti-resistive filter is provided in the vicinity of the water intake, the following effects can be obtained.

（１）水生生物が取水口付近に付着したり、生息したりすることが殆ど無く、水生生物による雑音の発生を効果的に抑制できる。
（２）取水口付近に防生フィルタを設けるだけなので、材料費を削減できる。
（３）防生フィルタの取付け・取外しが容易なので、メンテナンス費を削減できる。 (1) Aquatic organisms are hardly attached or inhabited near the water intake, and noise generation by aquatic organisms can be effectively suppressed.
(2) The material cost can be reduced because only the anti-sealing filter is provided near the water intake.
(3) The maintenance cost can be reduced because it is easy to attach / remove the anti-life filter.

以下、実施の形態により、この発明を更に詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to embodiments.

実施形態に係る電界検出器（の防生対策構造）の外観図を図１に、一部破断断面図を図２に示す。この電界検出器は、筐体としての外筒１内に円柱状の空洞部２が形成され、空洞部２に電極３が配置され、空洞部２と外筒１外部とを連通する取水口（海水取込口）５が外筒１の一端部に形成され、外筒１外部の海水が海水取込口５を通じて空洞部２内に進入し、電極３に接触することにより得られる電位がリード線４に出力される。   FIG. 1 is an external view of an electric field detector (an anti-protection structure) according to the embodiment, and FIG. In this electric field detector, a cylindrical hollow portion 2 is formed in an outer cylinder 1 as a housing, an electrode 3 is disposed in the hollow portion 2, and a water intake port (in which the hollow portion 2 communicates with the outside of the outer cylinder 1) The seawater intake port 5 is formed at one end of the outer cylinder 1, and the seawater outside the outer cylinder 1 enters the cavity 2 through the seawater intake port 5 and comes into contact with the electrode 3, leading to the potential. Output to line 4.

この電界検出器の特徴は、海水取込口５に防生フィルタ１０が設けられている点である。防生フィルタ１０は、図３にも示すように、防生ゴムからなる円柱状のもので、水路としての１ヶ所以上（ここでは多数）の***１１を有し、海水取込口５を塞ぐように海水取込口５に密着して取付けられている。従って、海水は***１１を通じて空洞部２に進入し、電極３に接触する。また、防生フィルタ１０は、海水取込口５に例えば嵌合により取付けられ、着脱が容易になっている。   A feature of this electric field detector is that a seawater intake port 5 is provided with a biocidal filter 10. As shown in FIG. 3, the biocidal filter 10 is a cylindrical one made of biorubber, and has one or more (here, many) small holes 11 as a water channel so as to block the seawater intake 5. Are attached in close contact with the seawater intake 5. Accordingly, seawater enters the cavity 2 through the small hole 11 and contacts the electrode 3. In addition, the anti-sealing filter 10 is attached to the seawater intake 5 by, for example, fitting, and is easily attached and detached.

なお、必要に応じて、防生機能の無いフィルタ１５を空洞部２と海水取込口５との連通部分に設けてもよい。この場合、海水に含まれるゴミ等が空洞部２に進入するのを防止できる。   In addition, you may provide the filter 15 without a protection function in the communication part of the cavity part 2 and the seawater intake 5 as needed. In this case, dust contained in seawater can be prevented from entering the cavity 2.

このように構成した電界検出器では、海水取込口５に防生フィルタ１０が在るので、海生生物が海水取込口５付近に付着したり、生息したりすることが殆ど無く、海生生物による雑音の発生を防止できる。勿論、フィルタ１５により、海水に含まれるゴミ等の進入及び周辺潮流による雑音の発生を防止できる。   In the electric field detector configured as described above, since the anti-sealing filter 10 is present at the seawater intake 5, marine organisms hardly attach or inhabit the vicinity of the seawater intake 5, Generation of noise by living organisms can be prevented. Of course, the filter 15 can prevent generation of noise due to entry of dust and the like contained in seawater and peripheral tides.

実施形態に係る電界検出器の外観図である。It is an external view of the electric field detector which concerns on embodiment. 同電界検出器の一部破断断面図である。It is a partially broken sectional view of the electric field detector. 同電界検出器における防生フィルタの斜視図である。It is a perspective view of the prevention filter in the same electric field detector. 従来例に係る１軸電界センサの外観図である。It is an external view of the uniaxial electric field sensor which concerns on a prior art example.

符号の説明Explanation of symbols

１ 外筒（筐体）
２ 空洞部
３ 電極
４ リード線
５ 取水口（海水取込口）
１０ 防生フィルタ
１１ ***
１５ フィルタ（防生機能無し）
1 outer cylinder (housing)
2 Cavity 3 Electrode 4 Lead wire 5 Water intake (seawater intake)
10 Protection filter 11 Small hole 15 Filter (without protection function)

Claims (2)

筐体内に電極を配置し、筐体外部と電極を連通する取水口を形成し、筐体外部の水が取水口を通じて電極に接触することにより得られる電位を測定し、その測定値をリード線で筐体外部に導出するように構成した電界検出器において、前記取水口に嵌合された防生フィルタを設け、前記防生フィルタは、前記取水口への水生生物の付着や生息を抑制する円柱状の防生ゴムで形成されており、当該円柱の両平面間を連通させるように水路としての１箇所以上の***が設けられていることを特徴とする電界検出器。 An electrode is placed inside the housing, a water intake is formed to communicate the electrode with the outside of the housing, the potential obtained when water outside the housing contacts the electrode through the water intake, and the measured value is the lead wire. In the electric field detector configured to be led out to the outside of the housing, a biocidal filter fitted to the intake port is provided, and the biocidal filter suppresses attachment and inhabitation of aquatic organisms to the intake port An electric field detector characterized in that it is formed of a cylindrical rubber-like rubber and has at least one small hole as a water channel so as to communicate between both planes of the cylinder. 前記筐体は、円筒状の外筒を有し、当該外筒の一端部に前記取水口及び前記防生フィルタが設けられるとともに、他端部から前記リード線が引き出されていることを特徴とする請求項１記載の電界検出器。 The casing has a cylindrical outer cylinder, the water inlet and the anti-sealing filter are provided at one end of the outer cylinder, and the lead wire is drawn out from the other end. The electric field detector according to claim 1.
JP2006113278A 2006-04-17 2006-04-17 Prevention structure for electric field detector Active JP4502215B2 (en)

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JP2010019815A (en) * 2008-07-14 2010-01-28 Technical Research & Development Institute Ministry Of Defence Electrode device for measurement of miniature potential in liquid
JP6015368B2 (en) * 2012-11-12 2016-10-26 株式会社島津製作所 Electrode for measuring minute potential in liquid
JP6127768B2 (en) * 2013-06-21 2017-05-17 株式会社島津製作所 Electrode device for liquid potential measurement

Citations (16)

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JPS63197598A (en) * 1987-02-10 1988-08-16 Tome Sangyo Kk Counter contamination preventing system
JPH01123694A (en) * 1987-11-10 1989-05-16 Tome Sangyo Kk Back-contamination preventing device and back-contamination preventing method using said device
JPH01285833A (en) * 1988-05-12 1989-11-16 Chubu Electric Power Co Inc Inspecting method of leak in slender pipe of condenser
JPH03106413A (en) * 1989-09-21 1991-05-07 Ngk Insulators Ltd Water purification treatment process and its device
JPH0820676A (en) * 1994-07-06 1996-01-23 Yokohama Rubber Co Ltd:The Rubber composition for preventing adhesion of aquatic life
JPH09276620A (en) * 1996-04-15 1997-10-28 Marusei Jukogyo Kk Ultrafine type filter for filtration of sea water
JPH1119638A (en) * 1997-07-01 1999-01-26 Yasuhei Suzuki Sea water treatment device and sea water treatment
JPH1189475A (en) * 1997-09-25 1999-04-06 Yokohama Rubber Co Ltd:The Antifouling rubber cover for float
JPH11262344A (en) * 1998-03-16 1999-09-28 Mitsuo Kuroiwa Device for cleaning water
JP2000097930A (en) * 1998-09-21 2000-04-07 Horiba Ltd Water quality measuring apparatus
JP2000178954A (en) * 1998-12-18 2000-06-27 Yokohama Rubber Co Ltd:The Attached-organism preventive device for offshore structure in sea
JP2000257050A (en) * 1999-03-04 2000-09-19 Ohbayashi Corp Water intake device
JP2001228257A (en) * 2000-02-16 2001-08-24 Tech Res & Dev Inst Of Japan Def Agency Uniaxial electric field sensor
JP2002020203A (en) * 2000-06-29 2002-01-23 Yokohama Rubber Co Ltd:The Method of imparting antifouling property to rubber product
JP2005270832A (en) * 2004-03-25 2005-10-06 Ngk Insulators Ltd Filter, casing therefor and filter assembling method
JP2006061866A (en) * 2004-08-30 2006-03-09 Jfe Engineering Kk Impact treatment device for aquatic organism

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197598A (en) * 1987-02-10 1988-08-16 Tome Sangyo Kk Counter contamination preventing system
JPH01123694A (en) * 1987-11-10 1989-05-16 Tome Sangyo Kk Back-contamination preventing device and back-contamination preventing method using said device
JPH01285833A (en) * 1988-05-12 1989-11-16 Chubu Electric Power Co Inc Inspecting method of leak in slender pipe of condenser
JPH03106413A (en) * 1989-09-21 1991-05-07 Ngk Insulators Ltd Water purification treatment process and its device
JPH0820676A (en) * 1994-07-06 1996-01-23 Yokohama Rubber Co Ltd:The Rubber composition for preventing adhesion of aquatic life
JPH09276620A (en) * 1996-04-15 1997-10-28 Marusei Jukogyo Kk Ultrafine type filter for filtration of sea water
JPH1119638A (en) * 1997-07-01 1999-01-26 Yasuhei Suzuki Sea water treatment device and sea water treatment
JPH1189475A (en) * 1997-09-25 1999-04-06 Yokohama Rubber Co Ltd:The Antifouling rubber cover for float
JPH11262344A (en) * 1998-03-16 1999-09-28 Mitsuo Kuroiwa Device for cleaning water
JP2000097930A (en) * 1998-09-21 2000-04-07 Horiba Ltd Water quality measuring apparatus
JP2000178954A (en) * 1998-12-18 2000-06-27 Yokohama Rubber Co Ltd:The Attached-organism preventive device for offshore structure in sea
JP2000257050A (en) * 1999-03-04 2000-09-19 Ohbayashi Corp Water intake device
JP2001228257A (en) * 2000-02-16 2001-08-24 Tech Res & Dev Inst Of Japan Def Agency Uniaxial electric field sensor
JP2002020203A (en) * 2000-06-29 2002-01-23 Yokohama Rubber Co Ltd:The Method of imparting antifouling property to rubber product
JP2005270832A (en) * 2004-03-25 2005-10-06 Ngk Insulators Ltd Filter, casing therefor and filter assembling method
JP2006061866A (en) * 2004-08-30 2006-03-09 Jfe Engineering Kk Impact treatment device for aquatic organism

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