KR20030065681A - The surface treatment method of cable insulation for high voltage cable accessories - Google Patents

The surface treatment method of cable insulation for high voltage cable accessories Download PDF

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Publication number
KR20030065681A
KR20030065681A KR1020020005400A KR20020005400A KR20030065681A KR 20030065681 A KR20030065681 A KR 20030065681A KR 1020020005400 A KR1020020005400 A KR 1020020005400A KR 20020005400 A KR20020005400 A KR 20020005400A KR 20030065681 A KR20030065681 A KR 20030065681A
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South Korea
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cable
heat
cable insulator
insulator
shrink tube
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KR1020020005400A
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Korean (ko)
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민병관
손시호
전승익
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엘지전선 주식회사
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Priority to KR1020020005400A priority Critical patent/KR20030065681A/en
Publication of KR20030065681A publication Critical patent/KR20030065681A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processing Of Terminals (AREA)

Abstract

PURPOSE: A method for processing a surface of a cable insulator of a supervoltage cable is provided to reduce the surface processing time of a cable insulator by processing a surface of the cable insulator by means of heating and contracting a portion of a thermal contraction tube through a heat gun. CONSTITUTION: A cable insulator(3) of a supervoltage cable is exposed in a predetermined length by cutting a cable sheath by means of a cutter. A thermal contraction tube(2) is inserted into an outer of the cable insulator(3). The thermal contraction tube(2) is heated and contracted through a heat gun(1) so that a surface of the cable insulator(3) is smoothed. The thermal contraction tube(2) is removed from the cable insulator(3).

Description

초고압 케이블의 케이블 절연체의 표면 처리 방법{The surface treatment method of cable insulation for high voltage cable accessories}The surface treatment method of cable insulation for high voltage cable accessories

본 발명은 초고압 케이블의 케이블 절연체를 노출시키고 노출된 케이블 절연체 외부에 열수축 튜브를 끼우고 열 분사기로 상기 열수축 튜브를 국부적으로 가열 수축하여 상기 케이블 절연체를 표면 처리하고 상기 열수축 튜브를 탈리하는 과정으로 구성되어 열 분사기를 사용하여 열수축 튜브의 필요한 부분만 가열 수축시켜 케이블 절연체를 표면 처리하므로서 케이블 절연체의 표면 처리에 소요되는 시간을대폭 단축시키는 초고압 케이블의 케이블 절연체의 표면 처리 방법에 관한 것이다.The present invention comprises a process of exposing the cable insulator of the ultra-high voltage cable and inserting a heat shrink tube outside the exposed cable insulator and locally heat shrinking the heat shrink tube with a heat sprayer to surface treat the cable insulator and detach the heat shrink tube. The present invention relates to a surface treatment method of a cable insulator of an ultra-high voltage cable, which heat-shrinks only a necessary portion of a heat shrink tube to heat-treat the cable insulator, thereby greatly reducing the time required for surface treatment of the cable insulator.

초고압 케이블을 접속함에 연결하려면 초고압 케이블의 연결 부분의 케이블 절연체의 표면을 평활하게 처리해야 된다. 종래에는 유리를 사용하여 케이블 절연체를 1차로 표면 처리하고 샌드페이퍼를 사용하여 케이블 절연체의 표면을 2차로 처리하여 초고압 케이블의 케이블 절연체의 표면을 처리했다. 이러한 종래의 표면 처리 방법은 샌드페이퍼로 인하여 케이블 절연체의 표면에서 스크래치가 발생하거나 불순물이 혼입되므로 표면 처리된 케이블 절연체의 절연 내력이 대폭 저하된다는 문제점이 있다.To connect the high voltage cable to the junction box, the surface of the cable insulator at the connection of the high voltage cable must be smoothed. Conventionally, the surface of the cable insulator was primarily treated using glass, and the surface of the cable insulator was treated secondly using sandpaper to treat the surface of the cable insulator of the ultra-high voltage cable. The conventional surface treatment method has a problem that the scratch strength or the impurities are mixed on the surface of the cable insulator due to the sandpaper, so that the dielectric strength of the surface-treated cable insulator is greatly reduced.

이러한 문제점을 해결하기 위하여 케이블 절연체에 열수축 튜브를 끼우고 상기 열수축 튜브의 외부 전체에 내열 고무 테이프와 열 분산용 금속 호일을 차례로 감고 상기 금속 호일의 외부에 벨트 히터를 감고 가열하여 상기 열수축 튜브 전체를 가열 수축시켜서 케이블 절연체 표면을 처리하는 방법이 개발되었다. 그러나 상기 방법은 여러 단계의 공정을 거쳐야 되고 열수축 튜브의 불필요한 부분까지 가열해야 되고 벨트 히터 자체의 가열, 온도 유지, 냉각에 장시간이 요구되므로 케이블 절연체의 표면 처리 작업에 8 시간 이상의 장시간이 소요되며, 열수축 튜브의 외부 전체에 내열 고무 테이프와 열 분산용 금속 호일과 벨트 히터를 수작업으로 감아야 하므로 표면 처리 작업의 안정성이 낮다는 문제점이 있다.In order to solve this problem, a heat shrink tube is inserted into a cable insulator, and a heat-resistant rubber tape and a heat dissipating metal foil are sequentially wrapped around the outside of the heat shrink tube, and a belt heater is wound around the outside of the metal foil and heated to heat the whole heat shrink tube. A method of treating cable insulator surfaces by heat shrink has been developed. However, the method requires a multi-step process, heats unnecessary parts of the heat shrink tube, and requires a long time for heating, maintaining the temperature, and cooling the belt heater itself. Since the heat-resistant rubber tape, the metal foil for heat dissipation, and the belt heater must be manually wound around the outside of the heat-shrink tube, there is a problem in that the surface treatment is not stable.

본 발명의 목적은 케이블 절연체를 노출하는 과정과 상기 케이블 절연체의 외부에 열수축 튜브를 끼우는 과정과 열 분사기로 상기 열수축 튜브를 가열 수축하여 상기 케이블 절연체를 표면 처리하는 과정과 상기 열수축 튜브를 탈리하는 과정으로 구성되어 열 분사기로 열수축 튜브의 필요한 부분만 가열 수축시켜 케이블 절연체를 표면 처리하므로서 케이블 절연체의 표면 처리에 소요되는 시간을 대폭 단축시키는 초고압 케이블의 케이블 절연체의 표면 처리 방법을 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to expose a cable insulator, to insert a heat shrink tube to the outside of the cable insulator and to heat shrink the heat shrink tube with a heat sprayer to surface treat the cable insulator and to detach the heat shrink tube. The present invention provides a method for surface treatment of a cable insulator of an ultra-high voltage cable, by heat-shrinking only a necessary portion of a heat shrink tube with a heat sprayer, thereby significantly reducing the time required for surface treatment of the cable insulator.

도 1은 본 발명의 표면 처리 방법의 구조도1 is a structural diagram of a surface treatment method of the present invention

도 2는 본 발명의 표면 처리 방법의 공정도2 is a process chart of the surface treatment method of the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 열 분사기1: heat sprayer

2 : 열수축 튜브2: heat shrink tube

3 : 케이블 절연체3: cable insulator

4 : 케이블 시스4: cable sheath

본 발명의 케이블 절연체의 표면 처리 방법은 초고압 케이블의 케이블 절연체(3)를 노출시키는 과정과 상기 케이블 절연체(3)의 외부에 열수축 튜브(2)를 끼우는 과정과 열 분사기(1)로 상기 열수축 튜브(2)를 가열 수축하여 상기 케이블 절연체(3)의 표면을 평활하게 처리하는 과정과 표면 처리된 케이블 절연체(3)로부터 상기 열수축 튜브(2)를 탈리하는 과정으로 구성되는 특징이 있다.The surface treatment method of the cable insulator of the present invention is a process of exposing the cable insulator (3) of the ultra-high voltage cable and the process of fitting the heat shrink tube (2) to the outside of the cable insulator (3) and the heat shrink tube with the heat injector (1) (2) by heat shrinking and smoothing the surface of the cable insulator (3) and the process of detaching the heat shrink tube (2) from the surface-treated cable insulator (3).

도면과 실시예를 참조하여 본 발명을 상세하게 설명한다.The present invention will be described in detail with reference to the drawings and examples.

도 1은 본 발명에 의한 케이블 절연체의 표면 처리 방법의 구조를 도시한 것이고 도 2는 본 발명에 의한 케이블 절연체의 표면 처리 방법의 공정을 도시한 것이다.1 shows the structure of the surface treatment method of the cable insulator according to the present invention, and FIG. 2 shows the process of the surface treatment method of the cable insulator according to the present invention.

초고압 케이블의 단부의 외부 요소를 탈피하여 상기 초고압 케이블의 단부의 케이블 절연체(3)를 일정한 길이로 외부에 노출시킨다. 구체적으로 초고압 케이블의 외부 구성 요소인 방식층과 케이블 시스(4)를 커터 등을 사용하여 절단하고 탈피하므로서 상기 초고압 케이블의 케이블 절연체(3)를 외부로 노출시킨다.The outer element at the end of the ultrahigh voltage cable is stripped away to expose the cable insulator 3 at the end of the ultrahigh voltage cable to the outside in a constant length. Specifically, the cable insulator 3 of the ultrahigh voltage cable is exposed to the outside by cutting and peeling the anticorrosive layer and the cable sheath 4, which are external components of the ultrahigh voltage cable, using a cutter or the like.

상기와 같이 노출된 케이블 절연체(3)의 외부에 일정한 길이의 열수축 튜브를 끼운다. 상기 열수축 튜브(2)는 외부 열원으로부터 일정한 열량이 가해지면 열량을 받은 부분이 수축되어 내부에 삽입된 물체를 압박하도록 형성된 튜브이다. 상기 열수축 튜브(2)의 내경과 상기 케이블 절연체(3)의 외경이 일치되므로 상기 열수축 튜브(2)가 외부 열원에 의해 가열 수축되면 상기 초고압 케이블의 케이블 절연체(3)가 압박되어 상기 케이블 절연체(3)의 표면이 평활하게 처리된다.A heat shrink tube of a predetermined length is fitted to the outside of the cable insulator 3 exposed as described above. The heat shrink tube (2) is a tube formed so that when a certain amount of heat is applied from an external heat source, the portion receiving the amount of heat is contracted to press the object inserted therein. Since the inner diameter of the heat shrink tube 2 and the outer diameter of the cable insulator 3 coincide with each other, when the heat shrink tube 2 is heat shrinked by an external heat source, the cable insulator 3 of the ultra-high voltage cable is pressed to the cable insulator ( The surface of 3) is smoothed.

상기 열수축 튜브(2)를 가열 수축하기 위한 외부 열원으로서 상기 열수축 튜브(2)에 대하여 국부적인 가열이 가능한 열 분사기(1)를 사용한다. 열 분사기(1)로 상기 열수축 튜브(2)의 필요한 부분에 직접 열을 분사하여 상기 부분을 집중적으로 가열 수축시켜서 상기 부분에 해당되는 케이블 절연체(3)을 압박하므로서 상기 케이블 절연체(3)의 표면을 평활하게 처리한다.A heat injector 1 capable of local heating to the heat shrink tube 2 is used as an external heat source for heat shrinking the heat shrink tube 2. The surface of the cable insulator 3 by pressing the cable insulator 3 corresponding to the portion by injecting heat directly to the required portion of the heat shrink tube 2 by heat injector 1 to intensively heat shrink the portion. To smooth the process.

상기와 같이 열 분사기(1)로 열수축 튜브(2)의 필요한 부분을 집중적으로 가열 수축하여 케이블 절연체(3)를 표면 처리하므로 케이블 절연체(3)의 표면 처리 작업에 소요되는 시간이 1 시간이내로 단축되며, 열 분사기(1)에서 열수축 튜브(2)로 직접 열을 분사하므로 상기 열수축 튜브(2)의 외부에 내열 고무 테이프와 열 분산용 금속 호일과 벨트 히터를 감는 과정이 생략되어 작업 안정성이 향상된다.As described above, the heat insulator 1 heat-shrinks the necessary portion of the heat shrink tube 2 to surface-treat the cable insulator 3 so that the time required for the surface treatment of the cable insulator 3 is shortened to within 1 hour. Since the heat is injected directly from the heat injector 1 to the heat shrink tube 2, the process of winding the heat-resistant rubber tape, the metal foil for heat dissipation and the belt heater on the outside of the heat shrink tube 2 is omitted, thereby improving work stability. do.

상기와 같이 열 분사기(1)와 열수축 튜브(2)에 의해 표면 처리된 케이블 절연체(3)로부터 상기 열수축 튜브(2)를 탈리하고, 상기 케이블 절연체(3)을 접속함의 고무 스트레스 콘에 접속하여 초고압 케이블을 상기 접속함에 연결한다.The heat shrink tube 2 is detached from the cable insulator 3 surface-treated by the heat sprayer 1 and the heat shrink tube 2 as described above, and the cable insulator 3 is connected to a rubber stress cone. Connect the high voltage cable to the junction box.

본 발명에 의한 초고압 케이블의 케이블 절연체의 표면 처리 방법은 케이블 절연체를 노출하는 과정과 노출된 케이블 절연체의 외경에 열수축 튜브를 끼우는과정과 열 분사기로 상기 열수축 튜브를 가열 수축하여 상기 케이블 절연체를 표면 처리하는 과정과 상기 열수축 튜브를 탈리하는 과정으로 구성되어 열 분사기을 사용하여 열수축 튜브의 필요한 부분만 가열 수축하여 케이블 절연체를 표면 처리하므로서 케이블 절연체의 표면 처리에 소요되는 시간이 대폭 단축되고 표면 처리 작업의 안정성이 향상되는 효과가 있다.Surface treatment method of the cable insulator of the ultra-high voltage cable according to the present invention is the process of exposing the cable insulator, the process of fitting the heat shrink tube to the outer diameter of the exposed cable insulator and heat shrink the heat shrink tube by a heat sprayer to surface treat the cable insulator And heat-shrink only the necessary part of the heat-shrinkable tube by using a heat sprayer to surface-treat the cable insulator, thereby significantly reducing the time required for surface treatment of the cable insulator and the stability of the surface treatment operation. This has the effect of being improved.

Claims (1)

초고압 케이블을 접속함에 연결하기 위하여 초고압 케이블의 케이블 절연체의 표면을 평활하게 처리하는데 있어서,In smoothing the surface of the cable insulator of the ultra high voltage cable to connect the ultra high voltage cable to the junction box, 초고압 케이블의 케이블 절연체(3)를 노출시키는 과정과, 상기 케이블 절연체(3)의 외부에 열수축 튜브(2)를 끼우는 과정과, 열 분사기(Heat gun, 1)로 상기 열수축 튜브(2)를 가열 수축하여 상기 케이블 절연체(3)의 표면을 평활하게 처리하는 과정과, 표면 처리된 케이블 절연체(3)로부터 상기 열수축 튜브(2)를 탈리하는 과정으로 구성되는 것을 특징으로 하는 초고압 케이블의 케이블 절연체의 표면 처리 방법.Exposing the cable insulator (3) of the ultra-high voltage cable, fitting the heat shrink tube (2) to the outside of the cable insulator (3), and heating the heat shrink tube (2) with a heat gun (1). Contracting and smoothing the surface of the cable insulator (3), and detaching the heat shrink tube (2) from the surface-treated cable insulator (3) of the cable insulator of the ultra-high voltage cable Surface treatment method.
KR1020020005400A 2002-01-30 2002-01-30 The surface treatment method of cable insulation for high voltage cable accessories KR20030065681A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102244854B1 (en) * 2020-08-13 2021-04-27 주식회사 세원전자 Heating apparatus capable of heating a heat-shrinkable tube differentially
KR20220015297A (en) * 2020-07-30 2022-02-08 엘지전자 주식회사 Electrification apparatus for electric dust collector
US11980897B2 (en) 2020-07-30 2024-05-14 Lg Electronics Inc. Electrification apparatus for electric dust collection

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KR20220015297A (en) * 2020-07-30 2022-02-08 엘지전자 주식회사 Electrification apparatus for electric dust collector
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KR102290459B1 (en) * 2020-08-13 2021-08-18 주식회사 세원전자 Heating apparatus capable of heating a heat-shrinkable tube differentially
WO2022035242A1 (en) * 2020-08-13 2022-02-17 주식회사 세원전자 Heating apparatus capable of differentially heating heat-shrinkable tube
CN114450137A (en) * 2020-08-13 2022-05-06 株式会社世元电子 Heating device capable of differentially heating heat shrinkable tube

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