CN203858327U - Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable - Google Patents
Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable Download PDFInfo
- Publication number
- CN203858327U CN203858327U CN201420157636.2U CN201420157636U CN203858327U CN 203858327 U CN203858327 U CN 203858327U CN 201420157636 U CN201420157636 U CN 201420157636U CN 203858327 U CN203858327 U CN 203858327U
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- CN
- China
- Prior art keywords
- voltage
- cable
- terminal
- power cable
- sharing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 229920003020 cross-linked polyethylene Polymers 0.000 title abstract 3
- 239000004703 cross-linked polyethylene Substances 0.000 title abstract 3
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims description 22
- -1 polyethylene Polymers 0.000 claims description 22
- 229920000573 polyethylene Polymers 0.000 claims description 22
- 210000004907 gland Anatomy 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012212 insulator Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012428 routine sampling Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Cable Accessories (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a terminal for testing partial discharge of a 35kV or lower crosslinked polyethylene power cable, which is characterized by comprising a stress ring, a voltage-sharing ring and a voltage-sharing connecting voltage-sharing ring, wherein the stress ring is provided with screws enabling the stress ring to be fixed to a cable shielding layer; the lower end of the stress ring is sleeved at a joint of the cable shielding layer and an insulator, the voltage-sharing sleeve sleeves an insulating cable core, a semi-conductive interface of the voltage-sharing sleeve is connected with the lower end of the stress ring, and the voltage-sharing sleeve is provided with 5-16 umbrella skirts; the upper end of the high-voltage connecting voltage-sharing ring is connected to a cable core conductor of the insulating cable core, the high-voltage connecting voltage-sharing ring is provided with screws enabling the high-voltage connecting voltage-sharing ring to be fixed to a cable conductor, and the lower end of the high-voltage connecting voltage-sharing ring is provided with a high-voltage connector connected with a high-voltage cable. The test terminal can be conveniently and rapidly installed, material consumption is low, and the terminal can be repeatedly used. The peeling and cutting length of the ends of the crosslinked polyethylene power cable is decreased, time for peeling and cutting the cable and installing the terminal is effectively shortened, the test efficiency is improved, damages caused by adopting a Freon terminal to the environment are avoided, and the test stability is improved compared with an oil terminal.
Description
Technical field
The utility model relates to power cable detection device, particularly a kind of 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal.
Background technology
According to 35KV and following cross-inked polyethylene power cable international standard and national standard requirement, cables manufacturing business and electric wire testing agency, to 35KV and following cross-inked polyethylene power cable dispatch from the factory routine test or sampling test, all will carry out shelf depreciation test.
There are freon terminal, oily terminal in traditional shelf depreciation test terminal, and freon is serious to environmental disruption, and the less stable of oily terminal is longer for guaranteeing measuring stability cable two ends stripping distance.
On Dec 23rd, 2009, the Chinese invention patent application Publication Specification of disclosed CN101609102A disclosed " mesolow crosslinked cable industrial frequency withstand voltage, partial discharge test terminal structure ", the technical scheme of wherein setting forth is in terminal, to be filled with certain mixed gas just can carry out that office puts and withstand voltage test, and, when being installed, this terminal also can be subject to the restriction of cable dimension size, if poor sealing, when inflation, will leak gas, test just cannot be carried out, just must reinstall and could continue test, so both wasted the time, test speed is also unhappy, and install also pretty troublesome.
On Dec 15th, 2012, the Chinese invention patent application Publication Specification of disclosed CN102353879A disclosed " cable partial discharge test terminal ", the technical scheme of wherein setting forth is in terminal lubricating cup, to inject freon or insulating oil just can carry out that office puts and withstand voltage test, freon is expensive, welding, factory's forbidding; The test effect of insulating oil is unstable, and oil product moisture-sensitive makes terminal electric discharge, causes terminal blast; And cannot carry out the withstand voltage test of 91kV5min under use insulation oil condition, cannot meet the testing requirements of GB/T12706-2008; Fastener conductor used connects, and easily comes in contact bad and causes electric discharge or signal attenuation.
Utility model content
The purpose of this utility model is to provide a kind of 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, it mainly solves the existing technical matters of above-mentioned prior art, it makes, and test terminal is easy for installation, quick, material consumption is few, and reusable.Shortened cross-inked polyethylene power cable termination stripping length, effectively shortened cable stripping and terminal set-up time, improved test efficiency, avoided adopting freon terminal and destruction to environment, relatively oily terminal has improved again measuring stability.
For solving the problems of the technologies described above, the utility model is achieved in that
A kind of 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: it comprises stress loop, all gland, high pressure connect grading ring, has and can make it be fixed on the screw on cable shield in described stress loop; Described stress loop lower end is enclosed within the interface of cable shield and insulation, and described equal gland is enclosed within on cable insulation core, and all the semiconduction interface of gland is connected with stress loop lower end, all on gland, has 5-16 full skirt; Described high pressure connects the core conductor of the upper end stube cable insulated wire cores of grading ring, on high pressure connection grading ring, has and can make it be fixed on the screw on cable conductor, and the lower end that high pressure connects grading ring has high pressure connection to be connected with hi-line.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: it is the torus of diameter 120-400mm that described high pressure connects grading ring.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the built-in screw in center that described high pressure connects grading ring is fixed on the core conductor of cable insulation core.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: described stress loop is a metal cylinder hollow body.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: described equal gland is the cone-shaped body with full skirt.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the height of described equal gland is 0.45-1.00m.
Described 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the upper terminal inner lining silicon rubber semiconductor layer of described equal gland is connected with stress loop lower end.
The utility model is compared with existing conventional art, and tool has the following advantages:
1, the utility model, owing to adopting technique scheme, makes that test terminal is easy for installation, quick, material consumption is few, and reusable.
2, the utility model is owing to adopting technique scheme, shorten cross-inked polyethylene power cable termination stripping length, effectively shorten cable stripping and closed the terminal set-up time, improve test efficiency, avoided adopting the destruction of freon terminal to environment, relatively oily terminal has improved again measuring stability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Refer to Fig. 1, the utility model discloses a kind of 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal.As shown in the figure: it comprises stress loop 1, all gland 2, high pressure connect grading ring 4, has and can make it be fixed on the screw 7 on cable shield 8 in described stress loop 1; The lower end of described stress loop 1 is enclosed within the interface of cable shield and insulation, and described equal gland 2 is enclosed within on cable insulation core 9, and all the semiconduction interface of gland 2 is connected with stress loop 1 lower end, all on gland 2, has 5-16 full skirt 3; Described high pressure connects the core conductor 5 of the upper end stube cable insulated wire cores 9 of grading ring 4, and the center that described high pressure connects grading ring 4 is fixed on the core conductor 5 of cable insulation core 9 with built-in screw.The lower end that high pressure connects grading ring 4 has high pressure connection 6 to be connected with hi-line.
As preferably, it be the torus of diameter 120-400mm that described high pressure connects grading ring 4, and guarantee contacts the generation of avoiding high pressure bloom phenomenon good time with cable core.
As preferably, the center that described high pressure connects grading ring 4 is fixed on the core conductor of cable insulation core 9 with built-in screw.
As preferably, described stress loop 1 is a metal cylinder hollow body.
As preferably, described equal gland 2 is the cone-shaped bodys with full skirt 3
As preferably, the height of described equal gland 2 is 0.45-1.00m, so both can meet testing requirements, can reduce again the stripping length at test cable two ends.
As preferably, the upper terminal inner lining silicon rubber semiconductor layer of described equal gland 2 is connected with stress loop 1 lower end, its compact conformation.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (7)
1. a 35KV and following cross-inked polyethylene power cable shelf depreciation test terminal, it is characterized in that: it comprises stress loop (1), all gland (2), high pressure connect grading ring (4), has and can make it be fixed on the screw (7) on cable shield (8) in described stress loop (1); The lower end of described stress loop (1) is enclosed within the interface of cable shield and insulation, described equal gland (2) is enclosed within on cable insulation core (9), all the semiconduction interface of gland (2) is connected with stress loop (1) lower end, all on gland (2), has 5-16 full skirt (3); Described high pressure connects the core conductor (5) of the upper end stube cable insulated wire cores (9) of grading ring (4), on high pressure connection grading ring, have and can make it be fixed on the screw on cable conductor, the lower end that high pressure connects grading ring (4) has high pressure connection (6) to be connected with hi-line.
2. 35KV according to claim 1 and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: described high pressure connects the torus of grading ring (4) for diameter 120-400mm.
3. 35KV according to claim 1 and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the built-in screw in center that described high pressure connects grading ring (4) is fixed on the core conductor (5) of cable insulation core (9).
4. 35KV according to claim 1 and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: described stress loop (1) is a metal cylinder hollow body.
5. according to the 35KV described in claim 1 or 2 or 3 or 4 and following cross-inked polyethylene power cable shelf depreciation test terminal, it is characterized in that: described equal gland (2) is the cone-shaped body of band full skirt (3).
6. 35KV according to claim 5 and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the height of described equal gland (2) is 0.45-1.00m.
7. 35KV according to claim 5 and following cross-inked polyethylene power cable shelf depreciation test terminal, is characterized in that: the upper terminal inner lining silicon rubber semiconductor layer of described equal gland (2) is connected with stress loop (1) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157636.2U CN203858327U (en) | 2014-04-02 | 2014-04-02 | Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157636.2U CN203858327U (en) | 2014-04-02 | 2014-04-02 | Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203858327U true CN203858327U (en) | 2014-10-01 |
Family
ID=51608173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157636.2U Expired - Lifetime CN203858327U (en) | 2014-04-02 | 2014-04-02 | Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203858327U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869229A (en) * | 2014-04-02 | 2014-06-18 | 上海华普电缆有限公司 | Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower |
| CN104931864A (en) * | 2015-06-12 | 2015-09-23 | 国网上海市电力公司 | Puncture test-used insulation cover suitable for cable cabin embedded condition |
| CN108107295A (en) * | 2018-01-03 | 2018-06-01 | 长园电力技术有限公司 | A kind of cable flexible joint test tool and method |
-
2014
- 2014-04-02 CN CN201420157636.2U patent/CN203858327U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869229A (en) * | 2014-04-02 | 2014-06-18 | 上海华普电缆有限公司 | Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower |
| CN104931864A (en) * | 2015-06-12 | 2015-09-23 | 国网上海市电力公司 | Puncture test-used insulation cover suitable for cable cabin embedded condition |
| CN104931864B (en) * | 2015-06-12 | 2018-03-30 | 国网上海市电力公司 | A kind of pressure test insulating boot embedded suitable for cable position in storehouse |
| CN108107295A (en) * | 2018-01-03 | 2018-06-01 | 长园电力技术有限公司 | A kind of cable flexible joint test tool and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |