JPS58117434A - Method for locating breakdown point of cable - Google Patents
Method for locating breakdown point of cableInfo
- Publication number
- JPS58117434A JPS58117434A JP21072881A JP21072881A JPS58117434A JP S58117434 A JPS58117434 A JP S58117434A JP 21072881 A JP21072881 A JP 21072881A JP 21072881 A JP21072881 A JP 21072881A JP S58117434 A JPS58117434 A JP S58117434A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- gas
- breakdown point
- breakdown
- conductor
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 230000015556 catabolic process Effects 0.000 title abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010959 steel Substances 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
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/081—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for cables
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は１例えば社内試験における電カケープルの破壊
位置を探索する場合に有用なケーブル破壊点の探索方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a cable breakage point search method that is useful, for example, when searching for the breakage position of a power cable in an in-house test.
（発明の技術的背景とその問題点）
従来、電カケープルの破壊位置を探索する方法としては
、電カケープル全体を長さ方向にわたって目視する方法
あるいは、電カケープルに高電圧を印加し、この電圧の
印加によってケーブル破壊点に生ずる音を聴取する方法
等が知られている。(Technical Background of the Invention and its Problems) Conventionally, methods for searching for the location of damage in a power cable include visually observing the entire length of the power cable, or applying a high voltage to the power cable and checking the voltage of this voltage. A method is known in which the sound generated at the cable breakage point by application of power is listened to.
しかしながら、前者の探索方法においては、クープルが
破壊したとしても必ずしもその外観に変化が認められる
とは限らず、かかる場合に、ケーブル破壊点を探索でき
ない欠点があった。また後者の探索方法においては、破
壊事故が生じた後に再度高電圧を印加するので、破壊孔
が大きくなって破壊個所の起点が不明となり、ケーブル
破壊の事故原因を究明できない欠点があった。また、ケ
ーブルがドラムに巻収されてＶｈる場合においては。However, in the former search method, even if the couple breaks, a change in its appearance is not necessarily recognized, and in such a case, there is a drawback that the cable break point cannot be searched. In addition, in the latter search method, high voltage is applied again after a cable breakage occurs, which causes the break hole to become larger and the origin of the break to be unknown, making it impossible to investigate the cause of the cable breakage accident. Also, when the cable is wound around a drum and Vh is used.
破壊点で生ずる音が反射したりするので破壊点を正確に
探索できない欠点もあった。There was also the drawback that the breaking point could not be accurately searched because the sound generated at the breaking point would be reflected.
（発明の目的）
本発明は上記事情に基づいてなされた本ので、ケーブル
破壊個所を簡便に探索できかつ破壊原因の究明を正確に
なし得るケーブル破壊点の探索方法を提供しようとする
ものである。(Purpose of the Invention) The present invention was made based on the above circumstances, and it is an object of the present invention to provide a method for searching for a cable breakage point, which allows the cable breakage point to be easily searched and the cause of the breakage to be accurately investigated. .
（発明の概要）
本発明においては、一端をシールしたケーブルの他端側
の導体にガスを圧入し、破壊孔から漏出するガスを検出
することにより前記目的を達成している。(Summary of the Invention) In the present invention, the above object is achieved by pressurizing gas into a conductor at the other end of a cable whose one end is sealed, and detecting gas leaking from a rupture hole.
（発明の実施例）
以下、本発明な一実施例の図面に基づいて説明する。第
１図において、絶縁破壊したケーブルｌの両端は段剥さ
れてそれぞれ、導体２、絶縁体３および鋼テープ４が露
出されている。しかして、のキャップと絶縁体間に跨っ
てシーリングテープが巻回され、これによってケーブル
の一端が完全シールされている。(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described based on the drawings. In FIG. 1, both ends of the cable 1, which has undergone dielectric breakdown, are stripped to expose the conductor 2, insulator 3, and steel tape 4, respectively. A sealing tape is then wrapped between the cap and the insulator, thereby completely sealing one end of the cable.
他端側のケーブル絶縁体外周には、圧入孔６を有するＬ
型キャップ７が装着され、上記同様、このＬ型キャップ
と絶縁体間がシールされている。The outer periphery of the cable insulator on the other end side has a press-fit hole 6.
The L-shaped cap 7 is attached, and the space between this L-shaped cap and the insulator is sealed as described above.
しかして、上記り型キャップ７の圧入孔６に圧搾空気等
のガスを圧入すると、このガスが導体２のより線間隙を
通って、破壊点Ｘに到達し、この破壊点から水中に漏出
する。従ってこの漏出ガスを検知することによりケーブ
ル破壊点を容易に探索できることになる。When a gas such as compressed air is pressurized into the press-fit hole 6 of the above-mentioned mold cap 7, this gas passes through the stranded wire gap of the conductor 2, reaches the breaking point X, and leaks into the water from this breaking point. . Therefore, by detecting this leaked gas, the cable breaking point can be easily searched for.
漏出ガスの検出は超音波マイクロホンによっであるいは
気泡を検知することによってなされる。Detection of escaping gas is done by ultrasonic microphones or by detecting air bubbles.
すなわち、前者においては、圧入ガスが破壊孔から噴出
する際に発生する噴出音を超音波マイクロホン８によっ
て聴取することにエフなされる。また後者においては、
ケーブルｌを図中二点鎖線で示す水槽９に浸漬すれば、
破壊点から漏出するガスを気泡１０として検知できる。That is, in the former case, the ultrasonic microphone 8 is used to listen to the ejection sound generated when the pressurized gas is ejected from the rupture hole. Also, in the latter case,
If the cable l is immersed in the water tank 9 indicated by the two-dot chain line in the figure,
Gas leaking from the breaking point can be detected as bubbles 10.
なお、漏出ガスの検出は、ケーブルを浸漬した水槽にマ
イクロホン８の先端を一部浸漬し、このマイクロホンに
よりて気泡となりて水中に放出されたガスを検知しても
よい。Note that the leaked gas may be detected by partially immersing the tip of the microphone 8 in a water tank in which the cable is immersed, and using this microphone to detect gas released into the water in the form of bubbles.
第２図は、ケーブルを巻収した一対のドラム１１ ＊
１２間のケーブル走路の略中央部に超音波マイクロホン
８あるいはケーブルを浸漬する水槽９を設置した場合の
実施例を示している。この実施例においては、長尺ケー
ブルを全長にわたって探索できる利点がある。Figure 2 shows a pair of drums 11 on which cables are wound.
An embodiment is shown in which an ultrasonic microphone 8 or a water tank 9 in which the cable is immersed is installed approximately at the center of the cable run between the cables. This embodiment has the advantage of being able to search the entire length of the long cable.
なお、図中１３ ｖ １４はシール部、１５は水を示し
ている〇
（発明の効果）
上述した本発明においては、一端をシールしたケーブル
の他端側の導体からガスを圧入してケーブル破壊点の探
索を行なっているので、次に述べる効果がある。In the figure, 13 v 14 indicates a sealed portion, and 15 indicates water. (Effects of the invention) In the present invention described above, one end of the cable is sealed and gas is injected from the conductor at the other end to prevent the cable from breaking. Since a point search is performed, the following effects are achieved.
Ｈ）破壊点から漏出するガスを検知することにより、容
易にその破壊個所を探索できる。H) By detecting the gas leaking from the fracture point, the fracture location can be easily searched.
（ロ）非電気釣手３段により破壊個所を探索できるので
、破壊孔を大きくせずにすみ、もってケーブル絶縁破壊
の起点を知り得、これによって破壊事故の正確な原因を
究明できる。(b) Since the fracture location can be searched for using three non-electric fishing means, it is not necessary to make the fracture hole large, and the origin of the cable insulation breakdown can be known, thereby making it possible to investigate the exact cause of the breakdown accident.
第１図は本発明に係るケーブル破壊点の探索状況を示す
説明図、第２図は本発明の他の実施例を示す説明図を示
している。
１ ・・・ ケーブル
２・・・導 体
３・・・絶縁体
５ ・・・ キャップ
７ ・・・Ｌ型キャ、プ
Ｘ・・・破壊点
代理人弁理士 頭出 佐−（、゛
ゝ、・２．。FIG. 1 is an explanatory diagram showing a cable break point search situation according to the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the present invention. 1...Cable 2...Conductor 3...Insulator 5...Cap 7...L-type cap, cap・2.
Claims (1)
を圧入し、このガスの圧入によって前記ケーブルの破壊
孔から漏出するガスを検出することを特徴とするケーブ
ル破壊点の探索方法。 ２、破壊孔から漏出するガスを超音波マイクロホンで検
出することを特徴とする特許請求の範囲第１項記載のケ
ーブル破壊点の探索方法。 ３、ケーブルを水槽に浸漬することによって、破壊孔か
ら漏出するガスを気泡となし、この気泡を検出すること
を特徴とする特許請求の範囲第１項記載のケーブル破壊
点の探索方法。[Claims] 1. A cable break point characterized in that VC gas is press-fitted into a conductor on the other end side of a cable whose one end is sealed, and gas leaking from a break hole in the cable is detected by press-fitting the gas. How to search for. 2. The method for searching for a cable break point according to claim 1, characterized in that gas leaking from the break hole is detected using an ultrasonic microphone. 3. The method of searching for a cable break point according to claim 1, characterized in that the cable is immersed in a water tank to form gas bubbles leaking from the break hole, and the bubbles are detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21072881A JPS58117434A (en) | 1981-12-30 | 1981-12-30 | Method for locating breakdown point of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21072881A JPS58117434A (en) | 1981-12-30 | 1981-12-30 | Method for locating breakdown point of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58117434A true JPS58117434A (en) | 1983-07-13 |
Family
ID=16594118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21072881A Pending JPS58117434A (en) | 1981-12-30 | 1981-12-30 | Method for locating breakdown point of cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58117434A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60501870A (en) * | 1983-07-14 | 1985-10-31 | ユ−イ− システムズ インコ−ポレイテツド | Ultrasonic leak detection method and device |
| JPS62282235A (en) * | 1986-05-31 | 1987-12-08 | Tatsuta Electric Wire & Cable Co Ltd | Method for testing air leakage of multicore cable |
| JPS62291543A (en) * | 1986-05-27 | 1987-12-18 | アクゾ・エヌ・ヴエ− | Method of measuring foaming point or maximum pore of thin-film or filter material |
| JPH05256725A (en) * | 1992-01-14 | 1993-10-05 | Ue Syst Inc | Method for detecting leakage of ultrasonic wave and ultrasonic oscillator used for the method |
| KR101107305B1 (en) * | 2009-12-22 | 2012-01-20 | 재단법인 포항산업과학연구원 | Apparatus for testing water tightness of cable |
| CN103048092A (en) * | 2012-12-18 | 2013-04-17 | 江苏远洋东泽电缆股份有限公司 | Test device and test method for longitudinal air permeability performance of cable |
| WO2015040518A1 (en) * | 2013-09-18 | 2015-03-26 | Fischer Connectors Holding S.A. | Device and method for testing the sealing of a cable |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348118A (en) * | 1976-04-05 | 1978-05-01 | Fuji Heavy Ind Ltd | Secondary air supply device for exhaust system of internal combustion engine |
-
1981
- 1981-12-30 JP JP21072881A patent/JPS58117434A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348118A (en) * | 1976-04-05 | 1978-05-01 | Fuji Heavy Ind Ltd | Secondary air supply device for exhaust system of internal combustion engine |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60501870A (en) * | 1983-07-14 | 1985-10-31 | ユ−イ− システムズ インコ−ポレイテツド | Ultrasonic leak detection method and device |
| JPS62291543A (en) * | 1986-05-27 | 1987-12-18 | アクゾ・エヌ・ヴエ− | Method of measuring foaming point or maximum pore of thin-film or filter material |
| JPS62282235A (en) * | 1986-05-31 | 1987-12-08 | Tatsuta Electric Wire & Cable Co Ltd | Method for testing air leakage of multicore cable |
| JPH0375812B2 (en) * | 1986-05-31 | 1991-12-03 | Tatsuta Densen Kk | |
| JPH05256725A (en) * | 1992-01-14 | 1993-10-05 | Ue Syst Inc | Method for detecting leakage of ultrasonic wave and ultrasonic oscillator used for the method |
| KR101107305B1 (en) * | 2009-12-22 | 2012-01-20 | 재단법인 포항산업과학연구원 | Apparatus for testing water tightness of cable |
| CN103048092A (en) * | 2012-12-18 | 2013-04-17 | 江苏远洋东泽电缆股份有限公司 | Test device and test method for longitudinal air permeability performance of cable |
| CN103048092B (en) * | 2012-12-18 | 2015-07-08 | 江苏远洋东泽电缆股份有限公司 | Test device and test method for longitudinal air permeability performance of cable |
| WO2015040518A1 (en) * | 2013-09-18 | 2015-03-26 | Fischer Connectors Holding S.A. | Device and method for testing the sealing of a cable |
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