KR20030089579A - The corona shield structure for preventing shrink back of cable - Google Patents

The corona shield structure for preventing shrink back of cable Download PDF

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Publication number
KR20030089579A
KR20030089579A KR1020020027026A KR20020027026A KR20030089579A KR 20030089579 A KR20030089579 A KR 20030089579A KR 1020020027026 A KR1020020027026 A KR 1020020027026A KR 20020027026 A KR20020027026 A KR 20020027026A KR 20030089579 A KR20030089579 A KR 20030089579A
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KR
South Korea
Prior art keywords
cable
corona shield
high voltage
ultra
cable insulator
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KR1020020027026A
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Korean (ko)
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전승익
지응서
신두성
민병관
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엘지전선 주식회사
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Priority to KR1020020027026A priority Critical patent/KR20030089579A/en
Publication of KR20030089579A publication Critical patent/KR20030089579A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Insulators (AREA)

Abstract

PURPOSE: A corona shield structure for preventing shrink back of cable is provided to prevent a damage of a cable insulator by using the corona shield corresponding to an end portion of a cable insulator of the ultra high voltage cable and a fixing pin for connecting an end portion of the corona shield to the end portion of the cable insulator. CONSTITUTION: A corona shield structure includes a corona shield(1), a fixing pin(2), and a cable insulator(3). The ultra high voltage cables are connected to an intermediate connection box. The corona shield(1) corresponds to an end portion of the cable insulator(3) of the ultra high voltage cable. The corona shield(1) is used for connecting end portions of the ultra high voltage cables to each other. A projection portion is formed at the end portion of the cable insulator(3). The fixing pin(2) is used for connecting an end portion of the corona shield(1) to the end portion of the cable insulator(3).

Description

초고압 케이블의 수축 탈리 방지용 코로나 쉴드 구조{The corona shield structure for preventing shrink back of cable}The corona shield structure for preventing shrink back of cable

본 발명은 양 단부가 각 초고압 케이블의 케이블 절연체의 단부에 일치되는 코로나 쉴드와 상기 코로나 쉴드의 단부 및 케이블 절연체의 단부를 연결 고정하는 고정용 핀으로 구성되어 초고압 케이블의 열수축 또는 열팽창시 상기 코로나 쉴드로부터 상기 케이블 절연체로 가해지는 응력이 분산되어 상기 케이블 절연체의 손상을 방지하는 초고압 케이블의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조에 관한 것이다.The present invention comprises a corona shield whose both ends correspond to an end of a cable insulator of each ultra-high voltage cable, and a fixing pin for connecting and fixing the end of the corona shield and the end of the cable insulator so that the corona shield during thermal contraction or thermal expansion of the ultra-high voltage cable. The present invention relates to a corona shield structure for preventing shrink back of an ultra-high voltage cable in which stress applied to the cable insulator is dispersed to prevent damage to the cable insulator.

초고압 케이블용 중간 접속함에서 서로 접속된 초고압 케이블의 단부 사이에 상기 초고압 케이블의 수축 탈리(Shrink back)를 방지하도록 코로나 쉴드가 형성된다.A corona shield is formed between the ends of the ultra high voltage cables connected to each other in the intermediate junction box for the ultra high voltage cables to prevent shrink back of the ultra high voltage cables.

종래에는 초고압 케이블의 케이블 절연체의 단부와 코로나 쉴드의 단부에 홈을 형성하고 상기 코로나 쉴드의 돌출부와 케이블 절연체의 돌출부를 각각 안착시켜서 코로나 쉴드 구조를 형성했다. 이러한 종래의 코로나 쉴드 구조는 초고압 케이블의 온도 변화로 인하여 상기 초고압 케이블이 열수축되거나 열팽창되면 코로나 쉴드의 돌출부로부터 케이블 절연체의 특정 부분으로 응력이 집중되어 상기 케이블 절연체가 손상된다. 케이블 절연체가 손상되면 코로나 쉴드가 초고압 케이블의 수축 탈리(Shrink back)를 방지하지 못할 뿐만 아니라 중간 접속함에서의 초고압 케이블의 절연 파괴로 이어진다는 문제점이 있다.Conventionally, grooves are formed in the end of the cable insulator and the end of the corona shield of the ultra-high voltage cable, and the corona shield structure is formed by mounting the protrusions of the corona shield and the protrusions of the cable insulator, respectively. In the conventional corona shield structure, when the ultra high voltage cable is thermally contracted or expanded due to the temperature change of the ultra high voltage cable, stress is concentrated from a protrusion of the corona shield to a specific portion of the cable insulator, thereby damaging the cable insulator. If the cable insulation is damaged, the corona shield may not only prevent shrink back of the ultra-high voltage cable but also lead to breakdown of the ultra-high voltage cable in the intermediate junction box.

본 발명의 목적은 양 단부가 초고압 케이블의 케이블 절연체의 단부에 일치되는 코로나 쉴드와 상기 코로나 쉴드의 단부 및 케이블 절연체의 단부를 연결 고정하는 고정용 핀으로 구성되어 초고압 케이블의 열수축 또는 열팽창시 상기 코로나 쉴드로부터 상기 케이블 절연체로 가해지는 응력이 분산되어 상기 케이블 절연체의 손상을 방지하는 초고압 케이블의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조를 제공하는데 있다.An object of the present invention consists of a corona shield whose both ends match the end of the cable insulator of the ultra-high voltage cable and a fixing pin for connecting and fixing the end of the corona shield and the end of the cable insulator so that the corona during thermal contraction or thermal expansion of the ultra-high voltage cable The stress applied to the cable insulator from the shield is distributed to provide a corona shield structure for preventing shrink back of the ultra-high voltage cable to prevent damage to the cable insulator.

도 1은 종래의 코로나 쉴드 구조의 구성도1 is a configuration diagram of a conventional corona shield structure

도 2는 본 발명의 코로나 쉴드 구조의 구성도2 is a block diagram of a corona shield structure of the present invention

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

1 : 코로나 쉴드1: Corona Shield

2 : 고정용 핀2: fixing pin

3 : 케이블 절연체3: cable insulator

4 : 돌출부4: protrusion

본 발명의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조는 양 단부가 각 초고압 케이블의 케이블 절연체(3)의 단부에 일치되도록 형성되는 코로나 쉴드(1)와, 상기 코로나 쉴드(1)의 단부 및 상기 케이블 절연체(3)의 단부를 연결 고정하도록 형성되는 고정용 핀(2)으로 구성되는 특징이 있다.Shrink back prevention corona shield structure of the present invention is a corona shield (1) formed so that both ends are matched to the end of the cable insulator (3) of each of the ultra-high voltage cable, the end of the corona shield (1) and the It is characterized by a fixing pin (2) formed to connect and fix the end of the cable insulator (3).

도면과 실시예를 참조하여 본 발명의 구성을 상세하게 설명한다.With reference to the drawings and embodiments will be described in detail the configuration of the present invention.

도 1은 종래의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조를 도시한 것이고 도 2는 본 발명에 의한 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조를 도시한 것이다.1 illustrates a conventional shrink back prevention corona shield structure and FIG. 2 illustrates a shrink back prevention corona shield structure according to the present invention.

초고압 케이블용 중간 접속함에서 초고압 케이블이 상호간에 접속되고, 상기 각 초고압 케이블의 케이블 절연체(3)의 단부 사이를 연결하는 일정한 크기의 코로나 쉴드(1)가 형성된다.In the intermediate junction box for the ultra-high voltage cable, the ultra-high voltage cables are connected to each other, and a corona shield 1 of a constant size is formed which connects between the ends of the cable insulator 3 of each of the ultra-high voltage cables.

구체적으로 상기 각 초고압 케이블의 케이블 절연체(3)의 단부에 턱부가 형성되고, 상기 케이블 절연체(3)의 턱부에 고정용 핀(2)이 장착되는 구멍이 형성된다.Specifically, a jaw portion is formed at an end portion of the cable insulator 3 of each of the ultra-high voltage cables, and a hole in which the fixing pin 2 is mounted is formed at the jaw portion of the cable insulator 3.

코로나 쉴드(1)의 양 단부에 상기 케이블 절연체(3)의 턱부에 일치되는 형상의 턱부가 형성되고, 상기 케이블 절연체(3)의 턱부에 상기 코로나 쉴드(1)의 턱부가 안착된다.At both ends of the corona shield 1, a jaw portion having a shape corresponding to the jaw portion of the cable insulator 3 is formed, and the jaw portion of the corona shield 1 is seated at the jaw portion of the cable insulator 3.

상기 코로나 쉴드(1)의 턱부에 상기 케이블 절연체(3)의 턱부의 고정용 핀 장착용 구멍과 일치되는 구멍이 형성된다. 상기 코로나 쉴드(1)의 턱부의 구멍과 상기 케이블 절연체(3)의 턱부의 구멍으로 고정용 핀(2)이 장착되어 상기 코로나쉴드(1)의 단부와 상기 케이블 절연체(3)의 단부가 연결 고정되므로서 초고압 케이블의 케이블 절연체(3)의 단부 사이에서 코로나 쉴드 구조가 형성된다.The jaw portion of the corona shield 1 is formed with a hole corresponding to the fixing pin mounting hole of the jaw portion of the cable insulator 3. A fixing pin 2 is mounted to the hole of the jaw of the corona shield 1 and the hole of the jaw of the cable insulator 3 so that the end of the corona shield 1 is connected to the end of the cable insulator 3. By being fixed, a corona shield structure is formed between the ends of the cable insulator 3 of the ultra-high voltage cable.

상기한 코로나 쉴드 구조는 초고압 케이블이 열수축되거나 열팽창되는 경우에 상기 초고압 케이블의 케이블 절연체(3)로 응력을 가하는 돌출부(4)가 형성되지 않는 구성을 이룬다.The corona shield structure has a configuration in which the protrusion 4 which stresses the cable insulator 3 of the ultra high voltage cable is not formed when the ultra high voltage cable is thermally contracted or thermally expanded.

실시예를 참조하여 본 발명의 작용을 상세하게 설명한다.The operation of the present invention will be described in detail with reference to Examples.

절연체 절삭 도구를 사용하여 초고압 케이블의 케이블 절연체(3)의 단부에 턱부를 형성한다. 코로나 쉴드(1)에 형성된 고정용 핀 장착용 구멍에 일치되는 고정용 핀 장착용 구멍을 상기 케이블 절연체(3)의 턱부에 형성한다. 상기 케이블 절연체(3)의 턱부에 코로나 쉴드(1)의 턱부를 안착시킨다. 상기 코로나 쉴드(1)의 고정용 핀 장착용 구멍과 상기 케이블 절연체(3)의 고정용 핀 장착용 구멍을 일치시키고 상기 고정용 핀 장착용 구멍에 고정용 핀(2)을 장착하여 상기 코로나 쉴드(1)의 단부와 상기 케이블 절연체(3)의 단부를 연결 고정하여 코로나 쉴드 구조를 형성한다. 상기와 같이 코로나 쉴드 구조가 형성되면 초고압 케이블의 온도가 상승하여 초고압 케이블이 열수축되거나 열팽창되는 경우에 상기 코로나 쉴드(1)로부터 상기 케이블 절연체(3)로 가해지는 응력이 분산되므로 상기 케이블 절연체(3)가 파손되지 않으며, 이에 따라서 초고압 케이블의 수축 탈리(Shrink back)가 방지된다.The insulator cutting tool is used to form the jaw at the end of the cable insulator 3 of the ultra-high voltage cable. A fixing pin mounting hole corresponding to the fixing pin mounting hole formed in the corona shield 1 is formed in the jaw portion of the cable insulator 3. The jaw portion of the corona shield 1 is seated on the jaw portion of the cable insulator 3. The corona shield is formed by matching the fixing pin mounting hole of the corona shield 1 with the fixing pin mounting hole of the cable insulator 3 and mounting the fixing pin 2 in the fixing pin mounting hole. The end of (1) and the end of the cable insulator 3 are fixed to each other to form a corona shield structure. When the corona shield structure is formed as described above, the stress applied to the cable insulator 3 from the corona shield 1 is dispersed when the temperature of the ultra high voltage cable is increased and the ultra high voltage cable is thermally contracted or thermally expanded. ) Is not broken, thereby preventing shrink back of the ultra-high voltage cable.

본 발명에 의한 초고합 케이블의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조는 양 단부가 초고압 케이블의 케이블 절연체의 단부에 대면하는 코로나 쉴드와 상기 코로나 쉴드의 단부 및 케이블 절연체의 단부를 연결 고정하는 고정용 핀으로 구성되어 초고압 케이블의 열수축 또는 열팽창시 상기 코로나 쉴드로부터 상기 케이블 절연체로 가해지는 응력이 분산되어 케이블 절연체의 파손과 이에 따른 초고압 케이블의 수축 탈리(Shrink back)를 방지하는 효과가 있다.According to the present invention, a corona shield structure for preventing shrink back of a super-high-strength cable is fixed to connect a corona shield at both ends facing an end of a cable insulator of an ultra-high voltage cable and an end of the corona shield and an end of a cable insulator. Since the stress is applied to the cable insulator from the corona shield during thermal contraction or thermal expansion of the ultra-high voltage cable, it is effective to prevent breakage of the cable insulator and consequently shrink back of the ultra-high voltage cable.

Claims (1)

초고압 케이블이 서로 접속되는 중간 접속함에 있어서,In the intermediate junction where the ultra-high voltage cables are connected to each other 양 단부가 각 초고압 케이블의 케이블 절연체(3)의 단부에 일치되도록 형성되는 코로나 쉴드(1)와, 상기 코로나 쉴드(1)의 단부 및 상기 케이블 절연체(3)의 단부를 연결 고정하도록 형성되는 고정용 핀(2)으로 구성되는 것을 특징으로 하는 초고압 케이블의 수축 탈리(Shrink back) 방지용 코로나 쉴드 구조.Corona shield 1 formed so that both ends coincide with the end of the cable insulator 3 of each of the ultra-high voltage cable, the fixing formed to connect and secure the end of the corona shield 1 and the end of the cable insulator 3 Shrink back prevention corona shield structure of the ultra-high voltage cable, characterized in that consisting of a pin (2).
KR1020020027026A 2002-05-16 2002-05-16 The corona shield structure for preventing shrink back of cable KR20030089579A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947622A (en) * 1975-01-03 1976-03-30 Massachusetts Institute Of Technology Vacuum insulated A-C superconducting cables
JPH08116621A (en) * 1994-10-14 1996-05-07 Tokyo Electric Power Co Inc:The Connecting section for power cable
JPH08149678A (en) * 1994-11-25 1996-06-07 Tokyo Electric Power Co Inc:The Insertion joint for rubber, plastic power cable
JP2000090998A (en) * 1998-09-11 2000-03-31 Sumitomo Electric Ind Ltd Superconducting cable joint

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947622A (en) * 1975-01-03 1976-03-30 Massachusetts Institute Of Technology Vacuum insulated A-C superconducting cables
JPH08116621A (en) * 1994-10-14 1996-05-07 Tokyo Electric Power Co Inc:The Connecting section for power cable
JPH08149678A (en) * 1994-11-25 1996-06-07 Tokyo Electric Power Co Inc:The Insertion joint for rubber, plastic power cable
JP2000090998A (en) * 1998-09-11 2000-03-31 Sumitomo Electric Ind Ltd Superconducting cable joint

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