WO2012088988A1 - Outil d'entretien utilisé pour des chaînes d'isolateur doubles d'une ligne de transport de courant continu - Google Patents

Outil d'entretien utilisé pour des chaînes d'isolateur doubles d'une ligne de transport de courant continu Download PDF

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Publication number
WO2012088988A1
WO2012088988A1 PCT/CN2011/083183 CN2011083183W WO2012088988A1 WO 2012088988 A1 WO2012088988 A1 WO 2012088988A1 CN 2011083183 W CN2011083183 W CN 2011083183W WO 2012088988 A1 WO2012088988 A1 WO 2012088988A1
Authority
WO
WIPO (PCT)
Prior art keywords
string
card
transmission line
tensioning device
double
Prior art date
Application number
PCT/CN2011/083183
Other languages
English (en)
Chinese (zh)
Inventor
张明旭
康淑丰
施凤祥
王学彬
焦巨轩
高志
李中生
耿三平
苏永杰
李俭
王军
姚伯岩
陈明
宋其丰
Original Assignee
河北省电力公司超高压输变电分公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 河北省电力公司超高压输变电分公司 filed Critical 河北省电力公司超高压输变电分公司
Priority to CA2823137A priority Critical patent/CA2823137C/fr
Publication of WO2012088988A1 publication Critical patent/WO2012088988A1/fr

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Classifications

    • 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
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching

Definitions

  • This invention relates to the field of electrical power, and more particularly to an inspection tool for a double string insulator on a DC transmission line.
  • ultra-high voltage transmission lines have become the backbone of China's power grid, which also puts forward higher requirements for operation and maintenance work.
  • a set must be developed for The equipment required for the line operation and maintenance.
  • One of the main maintenance work on the transmission line is the repair and replacement of the insulator.
  • the high-voltage transmission line is mostly supported on the cross arm by the insulator.
  • the insulator is divided into a linear insulator and a tensile insulator, a tensile insulator single-chip porcelain insulator and a whole string insulator. .
  • the DC insulator uses a V-type composite double-string insulator with a length of about 9m. Due to the length of the insulator string and the clearance, the size of the tower carrying the insulator and the transmission line becomes larger. The vertical load is also increased accordingly, which requires higher requirements for the replacement of the insulator in terms of tension and length.
  • the transmission line maintenance tools below 500kV voltage level in China have been relatively perfect, but due to the increase of voltage level, the increase of transmission line diameter and the increase of insulator length, these maintenance tools are far from meeting the replacement requirements.
  • the technical problem to be solved by the present invention is to provide an overhaul tool for a double-string insulator dedicated to a DC 660 kV transmission line.
  • the technical solution adopted by the present invention is: an inspection tool for a double-string insulator of a direct current transmission line, including two cards for mounting in a double string insulator a side fixture and a tensioning device connected between the fixtures, the fixture includes a V-string upper card fixedly connected to the tower side angle fitting angle steel, and a cross-load upper card fixedly connected to the cross-bag board And a large knife card fixedly connected to the V-type series plate, the tensioning device being a mechanical transmission screw connected between the V-string upper card and the large knife card or between the cross-load upper card and the large knife card.
  • the V-string upper card includes a V-string upper plate and a V-string lower plate on both sides of the tower-side metal fitting hanging angle steel, and the V-string upper plate has an inner end surface and a tower The side of the metal fittings is attached to the corresponding slot of the angle steel.
  • the outer end surface of the V string lower plate is hinged with a steel joint I.
  • the other end of the steel joint I is provided with a pin hole connected with the tensioning device, the V string upper plate and the V string. Both ends of the lower plate are connected by bolts.
  • the specific structure of the cross-load upper card is: the cross-load upper card includes a cross-load upper card main body and a steel joint II for connecting with the tensioning device hinged thereto, and the cross-load upper card main body is provided with a cross arm The corresponding bolt hole of the board connecting hole.
  • the specific structure of the large knife card is: the cutter handle end of the large knife card is provided with a pin hole for connecting the tensioning device, and the cutter head end is provided with a card slot II for clamping the V-shaped series plate, the cutter head end and the card
  • the two side walls of the slot II are arranged in an elbow shape.
  • the improvement of the tensioning device is that the tensioning device is a mechanical drive screw and a hydraulic device connected to one end of the mechanical drive screw through a positioning pin or an insulating pull rod.
  • the present invention is based on a tower-type structure of a direct current transmission line, an insulator string hanging network method, a grounding line parameter, and the like, and is developed for a direct line on a DC 660 kV transmission line.
  • Insulator's electrified maintenance tool has the advantages of reasonable structure, high overall strength, light weight and reliable operation. It is a DC 660kV transmission. The safe operation of the line and the daily maintenance after the operation provide a reliable guarantee.
  • the tensioning device is arranged with the mechanical transmission screw and the hydraulic device, and is used for retracting and releasing the air between the clamps, and solves the shortcoming of the transmission speed of the hydraulic transmission system under the large mechanical load, and reduces the work of the aerial workers.
  • the residence time of the aerial work; and the structure has the function of mutual protection, that is, when one of the failures does not affect the normal operation of the other transmission mechanism, the reliability of the work is greatly improved;
  • the assembly design allows for separate storage and easy replacement and maintenance when the tensioning device is not in use.
  • FIG. 1 is a diagram showing the connection relationship between components when the inner string is replaced by the present invention
  • FIG. 2 is a diagram showing the connection relationship between components when the inner string is replaced by the present invention
  • FIG. 3 is a schematic diagram of the structure of the card on the V string.
  • Figure 4 Schematic diagram of the card for the cross arm
  • Figure 5 The main view of the card holder
  • Figure 6 The top view of the card holder; Among them: 1.
  • V string lower plate 13. steel joint I, 14. card slot I,
  • an inspection tool for a double-string insulator of a direct current transmission line including a fixture and a tensioning device, the fixture is mounted on both sides of the double-string insulator
  • the tensioning device is connected between the fixtures.
  • the fixture includes a V-string upper card 1, a cross-load upper card 2, and a large knife card 3, all of which are made of LC4 aluminum alloy material, and have the characteristics of high strength, light weight, good plasticity, and high-altitude operation.
  • the card 1 on the V string is fixedly connected to the angle of the hanging point of the tower body.
  • the specific structure is shown in Fig. 3.
  • Package The V string upper plate 11, the V string lower plate 12 and the steel joint I 13 are arranged, and the tower side side fitting angle angle steel is located between the V string upper plate 11 and the V string lower plate 12, and the V string upper plate 11 is provided on the inner end surface thereof.
  • a metal slot I 13 is hinged to the outer end surface of the V-string lower plate 12, and the other end of the steel joint I is provided with a pin hole for connecting the tensioning device; Both ends of the upper plate and the lower plate of the V string are connected by bolts.
  • the cross-arm upper card 2 is fixedly connected to the cross-loading board 8 , and the specific structure is shown in FIG. 4 . It includes a cross body upper card body 21 and a steel joint II 22 that is movably connected thereto.
  • the cross-load upper card includes two triangular aluminum alloy plates correspondingly arranged, the steel joint II is located between two triangular aluminum alloy plates, and one end of the steel joint II is movably connected to one corner of the two triangular aluminum alloy plates through the pin shaft;
  • the alloy plate is provided with a pin hole corresponding to the connecting hole on the cross-board. When connecting, the cross-board is inserted between two triangular aluminum alloy plates and fixed by bolt holes and aluminum alloy plates.
  • the large knife card 3 is fixedly connected to the V-type series plate 6, and the specific structure is shown in Fig. 5 and Fig. 6.
  • the cutter end of the large knife card 4 is provided with a pin hole for connecting the tensioning device, and the cutter head end is provided with a card slot II for engaging the V-shaped series plate, and the end faces of the cutter head and the card slot II are bent. Settings.
  • the V-shaped series plate 87 is inserted into the card slot II, and the elbow at the end of the cutter head is hooked to the bolt on the V-shaped series plate, and the tool end of the large knife card is applied opposite to the direction of the bolt force. The pulling force can realize the fixing of the large knife card and the V-shaped series plate.
  • the tensioning device is connected between the V string upper card and the large knife card or between the cross arm upper card and the large knife card.
  • the tensioning device is a combination of the mechanical transmission screw 4 and the hydraulic device 5, the mechanical transmission screw and the hydraulic device They are connected by an insulating pull rod 7.
  • the tensioning device is assembled, and one end of the hydraulic device is movably connected to one end of the steel joint I of the V string with the pin hole through the pin shaft, and the other end of the hydraulic device is fixedly connected with one end of the mechanical transmission screw through the insulating pull rod.
  • the other end of the mechanical drive screw is movably connected to the pin hole of the end by a pin and a large knife.

Abstract

La présente invention concerne un outil d'entretien utilisé pour des chaînes d'isolateur doubles d'une ligne de transport de courant continu comprenant des accessoires installés sur les deux côtés des chaînes d'isolateur doubles et un tendeur raccordé entre les deux accessoires. L'accessoire comprend une pince (1) sur une chaîne d'isolateur de type V raccordée fixement à un acier cornier pour point d'accrochage de montage sur un côté du corps de la tour, une pince (2) sur une traverse raccordée fixement sur une feuille d'emballage de traverse (8), et une pince de type couteau (3) raccordée fixement à une plaque en ligne de type V (6). Le tendeur est une vis mère à transmission mécanique (4) raccordée entre la pince (1) sur la chaîne de type V et la pince de type couteau (3) ou entre la pince (2) sur la traverse et la pince de type couteau (3). L'outil d'entretien présente les avantages d'une structure sensible, d'une résistance intégrale élevée, d'un faible poids et d'un fonctionnement fiable, ce qui permet de fournir une garantie fiable pour une mise en service en toute sécurité et un entretien périodique de la ligne de transmission de courant continu.
PCT/CN2011/083183 2010-12-28 2011-11-29 Outil d'entretien utilisé pour des chaînes d'isolateur doubles d'une ligne de transport de courant continu WO2012088988A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2823137A CA2823137C (fr) 2010-12-28 2011-11-29 Outil d'entretien utilise pour des chaines d'isolateur doubles d'une ligne de transport de courant continu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020685278.4 2010-12-28
CN2010206852784U CN202014055U (zh) 2010-12-28 2010-12-28 用于±660kV直流输电线路V型双串绝缘子的检修工具

Publications (1)

Publication Number Publication Date
WO2012088988A1 true WO2012088988A1 (fr) 2012-07-05

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ID=44784666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/083183 WO2012088988A1 (fr) 2010-12-28 2011-11-29 Outil d'entretien utilisé pour des chaînes d'isolateur doubles d'une ligne de transport de courant continu

Country Status (3)

Country Link
CN (1) CN202014055U (fr)
CA (1) CA2823137C (fr)
WO (1) WO2012088988A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202014055U (zh) * 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 用于±660kV直流输电线路V型双串绝缘子的检修工具
CN103618250A (zh) * 2013-11-27 2014-03-05 国家电网公司 超、特高压线路带电更换双v、双l绝缘子串的作业方法
CN103618251A (zh) * 2013-11-27 2014-03-05 国家电网公司 ±800kV特高压直流输电线路带电检修工艺
CN108023302A (zh) * 2018-01-19 2018-05-11 浙江省送变电工程有限公司 一种绝缘子的更换装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377402A (en) * 1993-10-27 1995-01-03 Semple, Jr.; Alan R. Electrical insulator change-out tool
JPH09322343A (ja) * 1996-05-30 1997-12-12 Chubu Electric Power Co Inc Ｖ吊懸垂がいし装置の取替方法及びその方法で用いられる工具
CN201263063Y (zh) * 2008-07-21 2009-06-24 云南电网公司曲靖供电局 更换直线单联双串悬垂绝缘子的工具
CN201629517U (zh) * 2009-12-15 2010-11-10 湖北省电力公司超高压输变电公司 直流特高压线路绝缘子串大刀卡
CN102136695A (zh) * 2010-12-28 2011-07-27 河北省电力公司超高压输变电分公司 用于±660kV直流输电线路的检修工器具
CN202014055U (zh) * 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 用于±660kV直流输电线路V型双串绝缘子的检修工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5377402A (en) * 1993-10-27 1995-01-03 Semple, Jr.; Alan R. Electrical insulator change-out tool
JPH09322343A (ja) * 1996-05-30 1997-12-12 Chubu Electric Power Co Inc Ｖ吊懸垂がいし装置の取替方法及びその方法で用いられる工具
CN201263063Y (zh) * 2008-07-21 2009-06-24 云南电网公司曲靖供电局 更换直线单联双串悬垂绝缘子的工具
CN201629517U (zh) * 2009-12-15 2010-11-10 湖北省电力公司超高压输变电公司 直流特高压线路绝缘子串大刀卡
CN102136695A (zh) * 2010-12-28 2011-07-27 河北省电力公司超高压输变电分公司 用于±660kV直流输电线路的检修工器具
CN202014055U (zh) * 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 用于±660kV直流输电线路V型双串绝缘子的检修工具

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Publication number Publication date
CA2823137A1 (fr) 2012-07-05
CN202014055U (zh) 2011-10-19
CA2823137C (fr) 2015-08-11

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