CN108469579B - Switchgear external conical bushing high voltage test terminal - Google Patents

Switchgear external conical bushing high voltage test terminal Download PDF

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Publication number
CN108469579B
CN108469579B CN201810421562.1A CN201810421562A CN108469579B CN 108469579 B CN108469579 B CN 108469579B CN 201810421562 A CN201810421562 A CN 201810421562A CN 108469579 B CN108469579 B CN 108469579B
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voltage
test terminal
fixing bolt
layer
metal fixing
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CN201810421562.1A
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CN108469579A (en
Inventor
马方俊
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Yangzhou Senyuan Power Technology Co ltd
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Yangzhou Senyuan Power Technology Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

The invention discloses a high-voltage testing terminal of an outer conical sleeve of a switch cabinet, which is characterized by comprising an insulating layer, an outer shielding layer, an inner voltage equalizing layer, a metal fixing bolt, a high-voltage outgoing line and a built-in exhaust passage; a cavity is formed in the left side of the test terminal main body, and a metal fixing bolt is arranged in the center of the bottom of the cavity; an outer shielding layer is arranged on the outer surface of the left side of the test terminal main body, an insulating layer is arranged on the lower surface of the outer shielding layer, and an inner voltage equalizing layer is arranged on the lower surface of the insulating layer, which is close to the periphery of the metal fixing bolt; the high-voltage outgoing line is arranged at the inner axis of the test terminal main body, one end of the high-voltage outgoing line is connected with the metal fixing bolt, the other end of the high-voltage outgoing line is led out to the test equipment, and the built-in exhaust passage and the high-voltage outgoing line are arranged in parallel. The advantages are that: 1) The high-voltage lead-out wire is adopted to replace the conductive fixed rod, so that the equipment size is reduced, the installation and measurement are convenient, and the device is applicable to test work under various conditions; 2) The inside is equipped with the exhaust hole, can get rid of the air between test terminal and the sleeve pipe, realizes closely reliable connection.

Description

High-voltage testing terminal for external conical sleeve of switch cabinet
Technical Field
The invention relates to a high-voltage testing terminal for an outer conical sleeve of a switch cabinet, and belongs to the technical field of electrical equipment.
Background
In the assembly and use process of the switch cabinet, repeated tests are required to be carried out on the performance of the switch cabinet so as to determine that various electric power indexes of the switch cabinet can meet the requirements of an equipment power grid. In the prior art, according to the type of a switch cabinet equipment sleeve, different testing terminal connection equipment is selected for performance testing, and when a high-voltage switch cabinet with an outer conical equipment sleeve is subjected to high-voltage withstand voltage detection in factory or on site, a method of connecting a power cable and installing a standard cable connector or applying a full-insulation sheath is mainly adopted; in the method, the standard cable joint is easy to consume in detection, cannot be repeatedly measured, has high cost, high requirement on installation environment, complex process and long time consumption, and cannot achieve rapid detection; the method adopting the common all-insulation sheath is simple to install and low in cost, but cannot meet the high test voltage requirement of high-voltage switch cabinet equipment.
The invention patent number CN201010203209.X discloses a withstand voltage detection device of an outer cone-shaped equipment sleeve of a high-voltage switch cabinet, which comprises a cable stress terminal, an insulating boot sleeve and a conductive fixing rod, and can detect withstand voltage of the outer cone-shaped equipment sleeve of the high-voltage switch cabinet of 35kV or below. However, the detection device is long in length and cannot be bent, the detection device is difficult to install due to the fact that equipment spacing is small in practical use, and the contact end is easy to fall off due to the fact that the wiring position of the test terminal cannot be effectively exhausted, and accidents are caused.
Disclosure of Invention
The invention provides a high-voltage testing terminal for an external conical sleeve of a switch cabinet, which aims to solve the problems of inconvenient installation and unstable connection of the existing switch cabinet testing device and provides a high-voltage testing terminal which is convenient to assemble and fix and effective.
The technical solution of the invention is as follows: the high-voltage testing terminal of the external conical sleeve of the switch cabinet structurally comprises an insulating layer 1, an external shielding layer 2, an internal voltage equalizing layer 3, a metal fixing bolt 7, a high-voltage outgoing line 9 and a built-in exhaust passage 12; the testing terminal main body is in a wine bottle shape, one end of the testing terminal main body is thick, the other end of the testing terminal main body is thin, a cavity matched with the switch cabinet equipment sleeve 11 is formed in the left side of the testing terminal main body, and a metal fixing bolt 7 is arranged in the center of the bottom of the cavity; the outer surface of the left side of the test terminal main body is provided with an outer shielding layer 2, the lower surface of the outer shielding layer 2 is provided with an insulating layer 1, and the lower surface of the insulating layer 1 is close to the periphery of a metal fixing bolt 7 and is provided with an inner voltage equalizing layer 3; the high-voltage outgoing line 9 is arranged at the inner axis of the main body of the test terminal, one end of the high-voltage outgoing line 9 is connected with the metal fixing bolt 7, the other end of the high-voltage outgoing line is led out to the test equipment, and the built-in exhaust passage 12 and the high-voltage outgoing line 9 are arranged in parallel.
The invention has the advantages that:
1) The high-voltage lead-out wire is adopted to replace the conductive fixed rod, so that the equipment size is reduced, the installation and measurement are convenient, and the device is applicable to test work under various conditions;
2) The inside is equipped with the exhaust hole, can get rid of the air between test terminal and the sleeve pipe, realizes closely reliable connection.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage testing terminal of a conical sleeve outside a switch cabinet.
In the figure, the insulating layer 1, the outer shielding layer 2, the inner voltage equalizing layer 3, the shielding layer stress dispersing ring 4, the fixing ring 5, the heat shrinkage sheath layer 6, the metal fixing bolt 7, the high-voltage wire fixing port 8, the high-voltage outgoing line 9, the conductor core 10, the switchgear casing 11, the built-in exhaust passage 12 and the exhaust hole 13 are arranged.
Detailed Description
The technical scheme of the invention is further described below according to the attached drawings.
As shown in fig. 1, the structure of the high-voltage testing terminal of the external conical sleeve of the switch cabinet comprises an insulating layer 1, an external shielding layer 2, an internal voltage equalizing layer 3, a metal fixing bolt 7, a high-voltage outgoing line 9 and a built-in exhaust passage 12; the testing terminal main body is in a wine bottle shape, the left end is thick, the right end is thin, a cavity matched with the switch cabinet equipment sleeve 11 is formed in the left side of the testing terminal main body, and a metal fixing bolt 7 is arranged in the center of the bottom of the cavity; the outer surface of the left side of the test terminal main body is provided with an outer shielding layer 2, the lower surface of the outer shielding layer 2 is provided with an insulating layer 1, and the lower surface of the insulating layer 1 is close to the periphery of a metal fixing bolt 7 and is provided with an inner voltage equalizing layer 3; the high-voltage outgoing line 9 is arranged at the inner axis of the main body of the test terminal, one end of the high-voltage outgoing line 9 is connected with the metal fixing bolt 7, the other end of the high-voltage outgoing line is led out to the test equipment, and the built-in exhaust passage 12 and the high-voltage outgoing line 9 are arranged in parallel.
The high-voltage testing terminal of the switch cabinet outer conical sleeve can further comprise a shielding layer stress dispersing ring 4 and a fixing ring 5, wherein the middle part of the testing terminal body is provided with the sunken shielding layer stress dispersing ring 4, and the right end is provided with a plurality of fixing rings 5.
The inside of high-voltage lead-out wire 9 be equipped with conductor core 10, the outside parcel of the wire outlet end of high-voltage lead-out wire 9 has pyrocondensation restrictive coating 6 for buckle when avoiding high-voltage lead-out wire 9 to use and cause the fracture.
The left side of the metal fixing bolt 7 is provided with threads for being connected with a sleeve 11 of the switch cabinet equipment; a high-voltage wire fixing port 8 is arranged at the shaft center of the right end and is reliably connected with a conductor wire core 10 led out by a high-voltage lead-out wire 9; the right end side is provided with a through exhaust hole 13 which is connected with the built-in exhaust passage 12, so that the gas in the cavity can be exhausted from the built-in exhaust passage along the pipeline during installation.
The built-in exhaust passage 12 is a hollow hard tube, or a ventilation groove penetrating through the insulating layer 1, or a passage formed by non-interference fit between the insulating layer 1 and the high-voltage outgoing line 9.
During actual assembly, a high-voltage testing terminal main body of the switch cabinet outer conical sleeve is sleeved on the switch cabinet equipment sleeve 11, and is fixedly connected with a threaded interface at the upper top of the switch cabinet equipment sleeve 11 through a metal fixing bolt 7, and gas in a testing terminal cavity is discharged through an exhaust hole 13 and a built-in exhaust passage 12 to form air release fixation; the high-voltage outgoing line 9 is connected to the corresponding test equipment, so that the test of the performance of the switch cabinet can be started.
The invention can be used as an insulating protective sleeve of a sleeve 11 of a switch cabinet device without installing a high-voltage outgoing line 9; whether the outer shielding layer 2, the inner voltage equalizing layer 3, the shielding layer stress dispersing ring 4, the fixing ring 5 and the thermal shrinkage sheath layer 6 are additionally arranged or not can be selected according to the requirements of the voltage class of the equipment, so that the requirements of various detection conditions are met.

Claims (1)

1.开关柜外锥形套管高压测试终端，其特征是包括绝缘层（1）、外屏蔽层（2）、内均压层（3）、金属固定螺栓（7）、高压引出线（9）、内置排气道（12）；在测试终端主体左侧内部设有空腔，该空腔底部中心设有金属固定螺栓（7）；测试终端主体左侧外表面设有外屏蔽层（2），外屏蔽层（2）下表面设有绝缘层（1），绝缘层（1）的下表面接近金属固定螺栓（7）周围设有内均压层（3）；高压引出线（9）设于测试终端主体内部轴心处，高压引出线（9）一端连接金属固定螺栓（7），另一端引出至测试设备，内置排气道（12）与高压引出线（9）并行设置；1. A switch cabinet external conical bushing high-voltage test terminal, characterized in that it comprises an insulating layer (1), an outer shielding layer (2), an inner voltage-equalizing layer (3), a metal fixing bolt (7), a high-voltage lead-out line (9), and a built-in exhaust duct (12); a cavity is provided inside the left side of the test terminal body, and a metal fixing bolt (7) is provided at the bottom center of the cavity; an outer shielding layer (2) is provided on the left side outer surface of the test terminal body, an insulating layer (1) is provided on the lower surface of the outer shielding layer (2), and an inner voltage-equalizing layer (3) is provided on the lower surface of the insulating layer (1) near the metal fixing bolt (7); a high-voltage lead-out line (9) is provided at the axis center inside the test terminal body, one end of the high-voltage lead-out line (9) is connected to the metal fixing bolt (7), and the other end is led out to the test equipment, and the built-in exhaust duct (12) is provided in parallel with the high-voltage lead-out line (9); 还包括屏蔽层应力分散环（4）、固定环（5），其中屏蔽层应力分散环（4）呈凹陷，并且设于测试终端主体中部，固定环（5）设于测试终端主体右侧末端，有若干个；It also includes a shielding layer stress dispersion ring (4) and a fixing ring (5), wherein the shielding layer stress dispersion ring (4) is concave and is arranged in the middle of the test terminal body, and the fixing ring (5) is arranged at the right end of the test terminal body, and there are a plurality of them; 所述的高压引出线（9）的内部设有导体线芯（10），高压引出线（9）的出线端外侧包裹有热缩护套层（6）；The high-voltage lead wire (9) is provided with a conductor core (10) inside, and the outer side of the lead end of the high-voltage lead wire (9) is wrapped with a heat shrinkable sheath layer (6); 所述的金属固定螺栓（7）的左侧加工有螺纹，右端轴心处设有高压线固定口（8），与高压引出线（9）引出的导体线芯（10）可靠连接；右端一侧设有贯通的排气孔（13），与内置排气道（12）相连接；The left side of the metal fixing bolt (7) is processed with a thread, and the axis of the right end is provided with a high-voltage wire fixing opening (8) which is reliably connected to the conductor core (10) led out of the high-voltage lead wire (9); a through exhaust hole (13) is provided on one side of the right end, which is connected to the built-in exhaust duct (12); 所述的内置排气道（12）为空心硬管、或为穿过绝缘层（1）的通气槽、或为绝缘层（1）和高压引出线（9）之间不过盈配合形成的通道。The built-in exhaust passage (12) is a hollow hard tube, or a ventilation groove passing through the insulating layer (1), or a passage formed by a non-interference fit between the insulating layer (1) and the high-voltage lead wire (9).
CN201810421562.1A 2018-05-04 2018-05-04 Switchgear external conical bushing high voltage test terminal Active CN108469579B (en)

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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
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CN109455498A (en) * 2018-12-24 2019-03-12 陈瑞森 The taper row's of dress technique and the taper row's of dress machine automatically automatically
CN110376494A (en) * 2019-07-24 2019-10-25 大连北方互感器集团有限公司 A kind of device for voltage transformer test
CN113030670B (en) * 2021-04-20 2025-01-28 成都盛帮双核科技有限公司 A side-joined busbar connector test terminal
CN113381334A (en) * 2021-07-13 2021-09-10 湖北英华锐博电气设备有限公司 Tapered sleeve outgoing line connecting device in side surface of high-voltage switch cabinet

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61168819A (en) * 1985-01-22 1986-07-30 株式会社東芝 Gas insulated bushing
DE4234461A1 (en) * 1992-10-13 1994-04-14 Sachsenwerk Ag Test adaptor esp. for gas-insulated medium-voltage switchgear - has recessed insulating sleeve fitted replaceably into hollowed end of tubular polymeric plug with coaxial conductor
JP2000224746A (en) * 1999-02-03 2000-08-11 Mitsubishi Cable Ind Ltd Bushing for cable terminal
CN101852838A (en) * 2010-06-18 2010-10-06 马方俊 Voltage withstand detection device for external conical equipment casing of high-voltage switch cabinet
CN101923140A (en) * 2010-09-07 2010-12-22 北京必成达电缆附件有限公司 Ring network cabinet equipment casing pressure test device
CN204516506U (en) * 2015-04-14 2015-07-29 苏州翰为电气科技有限公司 Immersion power equipment lead-out wire solid insulation terminal
CN104821214A (en) * 2015-04-14 2015-08-05 苏州翰为电气科技有限公司 Solid insulation terminal for liquid-immersed electric power equipment leading-out line
CN104966549A (en) * 2015-07-06 2015-10-07 苏州翰为电气科技有限公司 Epoxy resin dry type sleeve
CN105277858A (en) * 2015-10-12 2016-01-27 上海天灵开关厂有限公司 Voltage-withstanding adapter for partial discharge testing of inner-cone bushing
CN206400020U (en) * 2016-12-05 2017-08-11 浙江舟山海洋输电研究院有限公司 High voltage direct current cable dry type easily-testing terminal
CN208125868U (en) * 2018-05-04 2018-11-20 扬州森源电力科技有限公司 Switchgear male-tapered casing high pressure tests terminal

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61168819A (en) * 1985-01-22 1986-07-30 株式会社東芝 Gas insulated bushing
DE4234461A1 (en) * 1992-10-13 1994-04-14 Sachsenwerk Ag Test adaptor esp. for gas-insulated medium-voltage switchgear - has recessed insulating sleeve fitted replaceably into hollowed end of tubular polymeric plug with coaxial conductor
JP2000224746A (en) * 1999-02-03 2000-08-11 Mitsubishi Cable Ind Ltd Bushing for cable terminal
CN101852838A (en) * 2010-06-18 2010-10-06 马方俊 Voltage withstand detection device for external conical equipment casing of high-voltage switch cabinet
CN101923140A (en) * 2010-09-07 2010-12-22 北京必成达电缆附件有限公司 Ring network cabinet equipment casing pressure test device
CN204516506U (en) * 2015-04-14 2015-07-29 苏州翰为电气科技有限公司 Immersion power equipment lead-out wire solid insulation terminal
CN104821214A (en) * 2015-04-14 2015-08-05 苏州翰为电气科技有限公司 Solid insulation terminal for liquid-immersed electric power equipment leading-out line
CN104966549A (en) * 2015-07-06 2015-10-07 苏州翰为电气科技有限公司 Epoxy resin dry type sleeve
CN105277858A (en) * 2015-10-12 2016-01-27 上海天灵开关厂有限公司 Voltage-withstanding adapter for partial discharge testing of inner-cone bushing
CN206400020U (en) * 2016-12-05 2017-08-11 浙江舟山海洋输电研究院有限公司 High voltage direct current cable dry type easily-testing terminal
CN208125868U (en) * 2018-05-04 2018-11-20 扬州森源电力科技有限公司 Switchgear male-tapered casing high pressure tests terminal

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Denomination of invention: Switch cabinet external conical bushing high voltage test terminal

Granted publication date: 20240430

Pledgee: Industrial and Commercial Bank of China Limited Yangzhou Hanjiang Sub-branch

Pledgor: YANGZHOU SENYUAN POWER TECHNOLOGY Co.,Ltd.

Registration number: Y2025980067405