CN108469579B - High-voltage testing terminal for external conical sleeve of switch cabinet - Google Patents
High-voltage testing terminal for external conical sleeve of switch cabinet Download PDFInfo
- 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
- outgoing line
- fixing bolt
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- 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
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. The high-voltage testing terminal for the outer conical sleeve of the switch cabinet is characterized by comprising an insulating layer (1), an outer shielding layer (2), an inner voltage equalizing layer (3), a metal fixing bolt (7), a high-voltage outgoing line (9) and an internal exhaust passage (12); a cavity is arranged in the left side of the test terminal main body, and a metal fixing bolt (7) is arranged in the center of the bottom of the cavity; an outer shielding layer (2) is arranged on the outer surface of the left side of the test terminal main body, an insulating layer (1) is arranged on the lower surface of the outer shielding layer (2), and an inner voltage equalizing layer (3) is arranged on the lower surface of the insulating layer (1) close to the periphery of the metal fixing bolt (7); 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 test terminal also comprises 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 main body, and the fixing ring (5) is arranged at the tail end of the right side of the test terminal main body and provided with a plurality of fixing rings;
A conductor wire core (10) is arranged in the high-voltage outgoing line (9), and a heat-shrinkable sheath layer (6) is wrapped outside the outgoing end of the high-voltage outgoing line (9);
The left side of the metal fixing bolt (7) is provided with threads, the right end shaft center is provided with a high-voltage wire fixing opening (8), and the high-voltage wire fixing opening is reliably connected with a conductor wire core (10) led out by a high-voltage lead-out wire (9); one side of the right end is provided with a through exhaust hole (13) which is connected with the built-in exhaust passage (12);
the built-in exhaust passage (12) is a hollow hard tube, or is a ventilation groove penetrating through the insulating layer (1), or is a passage formed by non-interference fit between the insulating layer (1) and the high-voltage outgoing line (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421562.1A CN108469579B (en) | 2018-05-04 | 2018-05-04 | High-voltage testing terminal for external conical sleeve of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421562.1A CN108469579B (en) | 2018-05-04 | 2018-05-04 | High-voltage testing terminal for external conical sleeve of switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108469579A CN108469579A (en) | 2018-08-31 |
| CN108469579B true CN108469579B (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810421562.1A Active CN108469579B (en) | 2018-05-04 | 2018-05-04 | High-voltage testing terminal for external conical sleeve of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108469579B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (11)
| 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 | Withstand test device of sleeve of looped network cabinet equipment |
| 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 |
-
2018
- 2018-05-04 CN CN201810421562.1A patent/CN108469579B/en active Active
Patent Citations (11)
| 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 | Withstand test device of sleeve of looped network cabinet equipment |
| 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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| Publication number | Publication date |
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| CN108469579A (en) | 2018-08-31 |
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