KR930001246B1 - Compensating method for insulating of bellmouth - Google Patents
Compensating method for insulating of bellmouth Download PDFInfo
- Publication number
- KR930001246B1 KR930001246B1 KR1019900010749A KR900010749A KR930001246B1 KR 930001246 B1 KR930001246 B1 KR 930001246B1 KR 1019900010749 A KR1019900010749 A KR 1019900010749A KR 900010749 A KR900010749 A KR 900010749A KR 930001246 B1 KR930001246 B1 KR 930001246B1
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- South Korea
- Prior art keywords
- thin electrode
- bell
- bell mouse
- insulating
- electrode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
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- Cable Accessories (AREA)
- Insulating Bodies (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 발명의 적용상태 접속함 전체측면도.1 is a side view of the junction box of the present invention.
제2도는 본 발명의 요부 확대 단면도.2 is an enlarged cross-sectional view of the main portion of the present invention.
제3도는 본 발명의 다른 실시예 요부 확대 단면도.Figure 3 is an enlarged cross-sectional view of the main portion of another embodiment of the present invention.
제4도는 종래의 요부 확대 단면도.4 is a conventional main portion enlarged cross-sectional view.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 접속함 2 : 벨마우스(Bell-Mouth)1: access box 2: Bell-Mouth
3 : 절연몸체 4 : 라운드부3: insulated body 4: round part
5 : 박전극 6 : 박전극 끝단부5: thin electrode 6: thin electrode end
7,7' : 절연물(에폭시수지)7,7 ': Insulator (epoxy resin)
본 발명은 고체 절연 케이블 및 유입 전력 케이블의 부속재인 접속함의 벨마우스 (Bell-Mouth) 절연 보강방법에 관한 것으로서, 특히 케이블 접속함 내부에 설치되는 벨마우스의 박전극 끝단 주변을 절연물로 코팅(Coating) 또는 매입하여 벨마우스의 절연 성능을 보강시켜 줄수 있도록 한 전력케이블용 접속함의 벨마우스(Bell-Mouth) 절연 보강방법에 관한 것이다.The present invention relates to a method of reinforcing the bell-mouth insulation of a junction box, which is an accessory of a solid insulated cable and an inflow power cable, and in particular, a coating around the thin electrode end of the bell mouse installed in the cable junction box with an insulator (coating). Or a bell-Mouth insulation reinforcement method of a junction box for a power cable that can be reinforced by embedding it.
일반적으로 각종 고전압용 고체 전력케이블 및 유입 전력케이블의 접속함에는 전계 완화를 목적으로 박전극을 갖는 벨마우스가 사용되는데, 상기 벨마우스의 박전극 주변은 통상 액체 절연체(절연유)로서 절연시키고 있다.In general, a bell mouse having a thin electrode is used to connect various high voltage solid-state power cables and inflow power cables for the purpose of electric field relaxation.
따라서 벨마우스의 박전극 끝단이 절연유에 노출된 상태 그대로 사용하면 벨마우스 주변, 특히 라운드(곡률) 부위 아래쪽의 전계의 세기는 박전극의 부속재에 있어서 전반적인 전계 완화 효과에 의해 약해지기는하나, 박전극 끝단의 전계는 끈단이 침전극 역할을 하므로 비교적 강해진다.Therefore, if the thin electrode tip of the bell mouse is used as it is exposed to the insulating oil, the strength of the electric field around the bell mouse, especially below the round (curvature) area is weakened by the overall field relaxation effect in the foil electrode accessory material. The electric field at the end of the electrode becomes relatively strong because the end of the electrode acts as a precipitation electrode.
또한, 이 부분은 전극, 고체 절연체, 액체 절연체가 만나는 삼중점이므로 비교적 강해진 전계의 영향이 합쳐져 전자 또는 이온의 방출이 쉬워지므로 절연파괴가 일어나기 쉬워진다.In addition, since this portion is a triple point where an electrode, a solid insulator, and a liquid insulator meet, the influence of a relatively strong electric field is combined to facilitate the release of electrons or ions, and thus easy to breakdown.
더우기, 미시적으로 볼때 박전극 끝단에서는 전극과 고체절연체(epoxy 수지) 사이에 박전극 두께만큼의 미소한 절연유간극이 존재하는 구조로 되며, 이렇게 전극과 고체 절연체 사이에 존재하는 액체 절연체(절연유) 간극의 절연 성능(파괴전압)은 그렇지 않은 경우에 비하여 상당히 저하된다는 것은 잘 알려진 사실이다.In addition, microscopically, at the tip of the thin electrode, there is a structure in which a minute insulating gap exists between the electrode and the solid insulator (epoxy resin) as much as the thickness of the thin electrode, and thus the liquid insulator (insulating oil) gap between the electrode and the solid insulator exists. It is a well-known fact that the insulation performance (destructive voltage) of P is significantly lower than that of otherwise.
그러므로 접속함 벨마우스의 박전극 끝단을 별도의 절연물로 보강시켜 주어야 했던 것이다.Therefore, the thin electrode end of the junction box bell mouse had to be reinforced with a separate insulator.
그러나 종래의 벨마우스의 구조를 보면 제4도에서 보는 바와 같이 에폭시(EPO Y) 수지재로 된 벨마우스, (A)의 절연몸체(B)의 라운드부(C) 하측으로 은분(Silver Paint) 또는 도전성 도료가 도포되어 있는 박전극(D)을 일체로 형성하고 있다.However, in the conventional structure of the bell mouse, as shown in Fig. 4, the bell mouse made of epoxy (EPO Y) resin material, silver powder (B) under the round part (C) of the insulating body (B) of (A) Alternatively, the thin electrode D to which the conductive paint is applied is integrally formed.
따라서 상기 박전극(D)은 F부분과 같이 어느점에서는 필연적으로 끝단부(E)가 존재할수 밖에 없은 형상으로 되어 있다.Therefore, the thin electrode D has a shape such that the end portion E is inevitably present at some point like the F portion.
또한 상기 박전극(D)의 주변에는 통상적으로 액체 절연체(절연유)로서 절연시킨 구조를 하고 있다.Moreover, the structure around the said thin electrode D is insulated normally as a liquid insulator (insulating oil).
그러므로 상기와 같은 종래의 벨마우스는 박전극의 끝단부에 아무런 보강 조치를 취하지 않고 박전극이 절연유에 노출된 상태 그대로 사용하여 왔으나 실제로는 이 박전극의 끝단부에서 부터 절연유의 절연파괴가 개시되어 부속재 자체가 절연 파괴되는 형상이 나타나는 문제점이 있었다.Therefore, the conventional bell mouse as described above has been used without any reinforcement measures at the end of the thin electrode, while the thin electrode is exposed to the insulating oil. There was a problem in that the shape that the accessory itself is insulated and broken.
본 발명은 상기와 같은 종래의 제반 문제점을 보완하고져 벨마우스의 라운드부에 형성되는 박전극의 끝단을 절연물(경화형 에폭시수지)로 코팅 또는 매립하여 박전극의 끝단부가 절연유에 노출되는 점과 미소한 액체 절연체 간극이 생기는 점을 방지시켜 벨마우스 부위의 절연 성능을 향상시킬수 있게 한것으로서, 이하 본 발명을 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention is to solve the above-mentioned conventional problems, coating or embedding the end of the thin electrode formed in the round portion of the bell mouse with an insulator (curable epoxy resin) to expose the end of the thin electrode to the insulating oil By preventing the occurrence of the liquid insulator gap, it is possible to improve the insulation performance of the bell mouse area, the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 구성을 보면 제1도와 제2도에서 보는 바와 같이 고전압 전력 케이블용 접속함(1) 내부에 설치되며 절연몸체(3)의 라운드부(4) 하측으로 박전극(5)이 일체 형성된 벨마우스(2)에 있어서, 상기 벨마우스(2)의 절연몸체(3) 라울드부(4)에 일체로 형성되어 있는 박전극(5) 전체를 절연물(에폭시수지)(7)로 코팅 (coating)시켜 절연성능을 보강시킬 수 있게 구성된 것이다.According to the configuration of the present invention, as shown in FIG. 1 and FIG. 2, the thin electrode 5 is formed inside the
또한 제3도에서 보는 바와같이 본 발명의 다른 실시예로 상기 벨마우스(2)의 절연몸체(3) 라운드부(4)에 일체로 형성되어 있는 박전극(5)의 끝단부(6) 주변에만 절연물(에폭시수지)(7a)을 매입시켜 벨마우스(2)의 절연성능을 향상시킬 수 있게 구성시킬 수도 있다.In addition, as shown in FIG. 3, in another embodiment of the present invention, the periphery of the
이상과 같이 구성된 본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.
벨마우스(2)의 절연몸체(3) 라운드부(4)에 일체로 형성되어 있는 박전극(5)의 끝단부(6)를 별도의 절연물(7)(7a)로 코팅 또는 매접함으로서 박전극의 끝단부가 절연유에 노출되는 현상을 방지하고, 또한 미소한 액체 절연체 간극이 생기는 현상을 방지하여 벨마우스의 절연성능을 향상시킬 수 있으므로 박전극 끝단부에서 절연유의 절연파괴가 개시되어 부속재가 절연 파괴되는 현상을 방지할 수 있고 또한 제품의 신뢰성을 향상시켜, 고전압전력 시스템(System)의 신뢰도를 높일 수 있는 효과가 있는 것이다.The thin electrode is coated or buried with a separate insulator (7) (7a) of the end (6) of the thin electrode (5) integrally formed in the round portion (4) of the insulating body (3) of the bell mouse (2). It is possible to improve the insulation performance of the bell mouse by preventing the end of the exposed portion from being exposed to the insulating oil and preventing the occurrence of a small liquid insulator gap. It is possible to prevent the phenomenon, and also to improve the reliability of the product, thereby increasing the reliability of the high-voltage power system (System).
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900010749A KR930001246B1 (en) | 1990-07-16 | 1990-07-16 | Compensating method for insulating of bellmouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900010749A KR930001246B1 (en) | 1990-07-16 | 1990-07-16 | Compensating method for insulating of bellmouth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920003598A KR920003598A (en) | 1992-02-29 |
| KR930001246B1 true KR930001246B1 (en) | 1993-02-22 |
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ID=19301307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900010749A Expired - Fee Related KR930001246B1 (en) | 1990-07-16 | 1990-07-16 | Compensating method for insulating of bellmouth |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930001246B1 (en) |
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1990
- 1990-07-16 KR KR1019900010749A patent/KR930001246B1/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| KR920003598A (en) | 1992-02-29 |
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