JP4502215B2 - Prevention structure for electric field detector - Google Patents
Prevention structure for electric field detector Download PDFInfo
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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
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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
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
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
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箇所以上の小穴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
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)の小穴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、海水は小穴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
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
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
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 小穴
15 フィルタ(防生機能無し)
1 outer cylinder (housing)
2
10
Claims (2)
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JP2006113278A JP4502215B2 (en) | 2006-04-17 | 2006-04-17 | Prevention structure for electric field detector |
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JP2006113278A JP4502215B2 (en) | 2006-04-17 | 2006-04-17 | Prevention structure for electric field detector |
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JP2007285863A JP2007285863A (en) | 2007-11-01 |
JP4502215B2 true JP4502215B2 (en) | 2010-07-14 |
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Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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2006
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Patent 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 |
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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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