JPS58216968A - Method for detecting quality of insulation coating of reference electrode cable in electrolyte - Google Patents
Method for detecting quality of insulation coating of reference electrode cable in electrolyteInfo
- Publication number
- JPS58216968A JPS58216968A JP57101196A JP10119682A JPS58216968A JP S58216968 A JPS58216968 A JP S58216968A JP 57101196 A JP57101196 A JP 57101196A JP 10119682 A JP10119682 A JP 10119682A JP S58216968 A JPS58216968 A JP S58216968A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- reference electrode
- conductor
- coaxial cable
- insulation coating
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
Description
【発明の詳細な説明】 の絶縁被覆の良否検出方法に関するものである。[Detailed description of the invention] The present invention relates to a method for detecting the quality of insulation coating.
土壌、海水、水等の電解質中における金属体との電1位
差を測定する基準電極は、飽和甘ゑ、飽和4酸銅、塩化
銀等から成るが、この基準電極には、従来、単心ケーブ
ルが接続されており、このケーブルは、電解質中を通っ
て外部の所定位置の測定器に接続される。The reference electrode used to measure the potential difference with a metal body in an electrolyte such as soil, seawater, or water is made of saturated copper, saturated copper tetraate, silver chloride, etc.; A core cable is connected, which passes through the electrolyte and connects to a measuring device at an external location.
なお、前記ケーブルの基準電極との接続部分は、ケーブ
ル導体(心線)が電解質と接触しないよう絶縁処理され
ている。Note that the connection portion of the cable to the reference electrode is insulated so that the cable conductor (core wire) does not come into contact with the electrolyte.
一般にケーブルの絶縁被覆は、経時的に種々の原因によ
って破損するが、特に電解質中におけるケーブルの絶縁
被覆は破損し易く、定期的に点検する必要がある。Generally, the insulation sheath of a cable is damaged over time due to various causes, but the insulation sheath of a cable in an electrolyte is particularly susceptible to damage and must be periodically inspected.
ところが、電解質中のケーブルの良否を点検するには、
電解質中からケーブルを基準電極と共に引き出さなけれ
ばならないので、その作業が煩雑で手間がかかり、多く
の作業員を必要とする問題があった。However, to check the quality of the cable in the electrolyte,
Since the cable has to be pulled out from the electrolyte together with the reference electrode, there is a problem in that the work is complicated and time-consuming and requires a large number of workers.
本発明は、かくの如き従来の問題を解決すべくしたもの
であって、その実施の一例を図面に基づき以下に説明す
る。The present invention is intended to solve such conventional problems, and an example of its implementation will be described below with reference to the drawings.
第1図において、■は基準電極であり、この基準電極1
には、内導体2a、内部絶縁被覆2b、外導体2c,外
部絶縁被覆2dから成る同軸ケープル2の一端における
内導体2aが接続されている。In Fig. 1, ■ is a reference electrode, and this reference electrode 1
An inner conductor 2a at one end of a coaxial cable 2 consisting of an inner conductor 2a, an inner insulating sheath 2b, an outer conductor 2c, and an outer insulating sheath 2d is connected to the inner conductor 2a.
々お、基準電&1との接続部における同軸ケーブル2の
外導体2Cは、基準電極1および外部(電解質)と接触
しないよう絶縁処理されているものとする。It is assumed that the outer conductor 2C of the coaxial cable 2 at the connection part with the reference electrode &1 is insulated so as not to come into contact with the reference electrode 1 and the outside (electrolyte).
しかして、第2図に示す如く、電解質3中における前記
同軸ケーブル2の外部絶縁被覆2dが何等かの原因によ
って破損した場合、この破損個所2eを介して外導体2
Cが電解質3と接触し、夕1導体2Cと基準電極1間に
、所謂異種金属間の電位差(数1.OOmV)が生じる
。As shown in FIG. 2, if the outer insulation coating 2d of the coaxial cable 2 in the electrolyte 3 is damaged for some reason, the outer conductor 2
C comes into contact with the electrolyte 3, and a so-called potential difference between different metals (several 1.00 mV) is generated between the conductor 2C and the reference electrode 1.
しかも破損個所2eを介して外導体2Cが電、解質3と
接触すると、電解質3を介して外導体2cと基準電極1
間が成る有限の抵抗となる。Moreover, when the outer conductor 2C comes into contact with the electrolyte 3 through the damaged part 2e, the outer conductor 2c and the reference electrode 1 contact each other via the electrolyte 3.
It becomes a finite resistance with a gap.
従って電解質3の外部における同軸ケーブル2の他端の
内導体2aと外導体20間に、電圧計あるいは抵抗計等
の測定器4を接続することにより、同軸ケーブル2の電
解質3中における外部絶縁被5)2dが破損しているこ
と全検出できる。Therefore, by connecting a measuring device 4 such as a voltmeter or a resistance meter between the inner conductor 2a and the outer conductor 20 at the other end of the coaxial cable 2 outside the electrolyte 3, it is possible to 5) It is possible to completely detect that 2d is damaged.
また電解質3中における同軸ケーブル2の外部絶縁被覆
2dと内部絶縁被覆2bとが同じ個所で破損した場合、
あるいは異なる岡所で破損し、電解質3が浸潤した場合
には、電解質3を介して外導体2Cと内導体2a間が低
抵抗あるいは短絡となる。Furthermore, if the outer insulation coating 2d and the inner insulation coating 2b of the coaxial cable 2 in the electrolyte 3 are damaged at the same location,
Alternatively, if the electrolyte 3 is infiltrated due to breakage at a different location, a low resistance or a short circuit occurs between the outer conductor 2C and the inner conductor 2a via the electrolyte 3.
従って電解質3の外部における同軸ケーブル2の他端の
内導体2aと外導体2C間に、測定器4(抵抗計)を接
続することにより、同軸ケーブル2の電解質3中におけ
る外部絶縁被覆2dと内部絶縁被覆2bとが破損してい
ること全検出できる。Therefore, by connecting a measuring device 4 (resistance meter) between the inner conductor 2a and outer conductor 2C at the other end of the coaxial cable 2 outside the electrolyte 3, it is possible to It is possible to completely detect that the insulation coating 2b is damaged.
この場合、外導体2Cと内導体2a間が低抵抗あるいは
短絡となるので、外導体2Cと基準電極1間の電位差は
極めて小さいか、生じ彦い。In this case, there is a low resistance or a short circuit between the outer conductor 2C and the inner conductor 2a, so the potential difference between the outer conductor 2C and the reference electrode 1 is extremely small or small.
なお、電解質3中における同軸ケーブル2の内部絶縁被
覆2bが破損していても、外部絶縁被覆2dが破損して
い々い場合には、外導体2Cと基準電極1間に電位差が
生じないし、また外導体2Cと基準電極1間の抵抗は無
限大であることから、電圧計あるいは抵抗計等の測定器
iの指針は振れない。Note that even if the internal insulation coating 2b of the coaxial cable 2 in the electrolyte 3 is damaged, if the external insulation coating 2d is damaged, no potential difference will occur between the outer conductor 2C and the reference electrode 1. Since the resistance between the outer conductor 2C and the reference electrode 1 is infinite, the pointer of the measuring device i such as a voltmeter or ohmmeter does not swing.
以上述べた如く、本発明によれば、電解質中がら従来の
如くケーブルを基準電極と共に引き出すことなく、電解
質の外部における同軸ケーブルの他端の内導体と外導体
間の電位差あるいは導通の有無を測定するという極めて
簡単な作業によって、電解質中における同軸ケーブルの
外部絶縁被覆の単独破損あるいは外部絶縁被覆と内部絶
縁被覆の複合破損を検出できる。As described above, according to the present invention, the potential difference or the presence or absence of continuity between the inner conductor and the outer conductor at the other end of the coaxial cable outside the electrolyte is measured without pulling out the cable together with the reference electrode from inside the electrolyte as in the conventional method. By this extremely simple process, it is possible to detect individual damage to the outer insulation sheath of a coaxial cable in electrolyte or combined damage to the outer insulation sheath and inner insulation sheath.
図は本発明の実施の一例を示すものであって、第1図は
基準電極に同軸ケーブルを接続した態様の概略図、第2
図は電解質中における同軸ケーブルの絶縁被覆が破損し
ている場合の検出状況を示す説明図である。
第1図 第2図
1゜The figures show an example of the implementation of the present invention, and FIG. 1 is a schematic diagram of an embodiment in which a coaxial cable is connected to a reference electrode, and FIG.
The figure is an explanatory diagram showing a detection situation when the insulation coating of a coaxial cable in an electrolyte is damaged. Figure 1 Figure 2 1゜
Claims (1)
ーブルの内導体を接続し、この接続部における同軸ケー
ブルの外導体を、基準電極および電解質に接触しないよ
う絶縁し、電解質の外部に露出している前記同軸ケーブ
ルの内導体と外導体間の電位差あるいは導通の有無を測
定することを特徴とする電解質中における基準電極ケー
ブルの絶縁被覆の良否検出方法。Connect the inner conductor of the coaxial cable to the reference electrode for measuring the potential difference with a metal object in the electrolyte, and insulate the outer conductor of the coaxial cable at this connection so that it does not come into contact with the reference electrode or the electrolyte, and expose it to the outside of the electrolyte. A method for detecting the quality of an insulation coating of a reference electrode cable in an electrolyte, the method comprising measuring the potential difference or the presence or absence of continuity between an inner conductor and an outer conductor of the coaxial cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57101196A JPS58216968A (en) | 1982-06-11 | 1982-06-11 | Method for detecting quality of insulation coating of reference electrode cable in electrolyte |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57101196A JPS58216968A (en) | 1982-06-11 | 1982-06-11 | Method for detecting quality of insulation coating of reference electrode cable in electrolyte |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58216968A true JPS58216968A (en) | 1983-12-16 |
Family
ID=14294185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57101196A Pending JPS58216968A (en) | 1982-06-11 | 1982-06-11 | Method for detecting quality of insulation coating of reference electrode cable in electrolyte |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58216968A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000011484A1 (en) * | 1998-08-01 | 2000-03-02 | Bae Systems Plc | Thermographic wiring inspection |
US6995565B1 (en) | 1998-08-01 | 2006-02-07 | Airbus Uk Limited | Thermographic wiring inspection |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57122367A (en) * | 1981-01-23 | 1982-07-30 | Tokyo Electric Power Co Inc:The | Discriminating method for deterioration of underground distribution line |
-
1982
- 1982-06-11 JP JP57101196A patent/JPS58216968A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57122367A (en) * | 1981-01-23 | 1982-07-30 | Tokyo Electric Power Co Inc:The | Discriminating method for deterioration of underground distribution line |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000011484A1 (en) * | 1998-08-01 | 2000-03-02 | Bae Systems Plc | Thermographic wiring inspection |
US6995565B1 (en) | 1998-08-01 | 2006-02-07 | Airbus Uk Limited | Thermographic wiring inspection |
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