CN103869229A - Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower - Google Patents
Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower Download PDFInfo
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- CN103869229A CN103869229A CN201410132623.4A CN201410132623A CN103869229A CN 103869229 A CN103869229 A CN 103869229A CN 201410132623 A CN201410132623 A CN 201410132623A CN 103869229 A CN103869229 A CN 103869229A
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Abstract
The invention relates to a terminal for partial discharge tests on a crosslinked polyethylene power cable of 35 kV or lower. The terminal is characterized by comprising a stress ring, a voltage-sharing sleeve and a high-voltage connecting voltage-sharing ring. Screws for fixing the stress ring to a cable shielding layer are arranged on the stress ring. The joint of the cable shielding layer and an insulator is sleeved with the lower end of the stress ring. An insulating cable core is sleeved with the voltage-sharing sleeve. A semiconductor connector of the voltage-sharing sleeve is connected with the lower end of the stress ring. Five to sixteen umbrella skirts are arranged on the voltage-sharing sleeve. The upper end of the high-voltage connecting voltage-sharing ring is connected with a cable core conductor of the insulating cable core. Screws for fixing the high-voltage connecting voltage-sharing ring to the cable conductor are arranged on the high-voltage connecting voltage-sharing ring. 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, damage caused by a freon terminal to the environment is avoided, and test stability is improved compared with an oil terminal.
Description
Technical field
The present invention 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.
Summary of the invention
The object of the present invention 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 present invention 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 present invention is compared with existing conventional art, and tool has the following advantages:
1, the present invention, owing to adopting technique scheme, makes that test terminal is easy for installation, quick, material consumption is few, and reusable.
2, the present invention is owing to adopting technique scheme, shorten cross-inked polyethylene power cable termination stripping length, effectively shortened cable stripping and closed the terminal set-up time, improved test efficiency, avoided adopting the destruction of freon terminal to environment, relatively oily terminal has improved again measuring stability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Refer to Fig. 1, the invention 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 assurance 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 invention in sum, be not used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, all should be technology category of the present invention.
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 |
|---|---|---|---|
| CN201410132623.4A CN103869229B (en) | 2014-04-02 | 2014-04-02 | Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132623.4A CN103869229B (en) | 2014-04-02 | 2014-04-02 | Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103869229A true CN103869229A (en) | 2014-06-18 |
| CN103869229B CN103869229B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410132623.4A Active CN103869229B (en) | 2014-04-02 | 2014-04-02 | Terminal for partial discharge tests on crosslinked polyethylene power cable of 35 kV or lower |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09236631A (en) * | 1996-02-28 | 1997-09-09 | Tokyo Electric Power Co Inc:The | Noise removal method in partial discharge measurement |
| CN101609102A (en) * | 2009-07-13 | 2009-12-23 | 上海三原电缆附件有限公司 | Mesolow crosslinked cable industrial frequency withstand voltage, local discharge test terminal structure |
| 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 |
| CN102353879A (en) * | 2011-07-06 | 2012-02-15 | 浙江晨光电缆股份有限公司 | Cable partial discharge test terminal |
| CN203465388U (en) * | 2013-09-26 | 2014-03-05 | 山东希波电气科技股份有限公司 | 35kV suspension type test terminal |
| CN203858327U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable |
-
2014
- 2014-04-02 CN CN201410132623.4A patent/CN103869229B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09236631A (en) * | 1996-02-28 | 1997-09-09 | Tokyo Electric Power Co Inc:The | Noise removal method in partial discharge measurement |
| CN101609102A (en) * | 2009-07-13 | 2009-12-23 | 上海三原电缆附件有限公司 | Mesolow crosslinked cable industrial frequency withstand voltage, local discharge test terminal structure |
| 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 |
| CN102353879A (en) * | 2011-07-06 | 2012-02-15 | 浙江晨光电缆股份有限公司 | Cable partial discharge test terminal |
| CN203465388U (en) * | 2013-09-26 | 2014-03-05 | 山东希波电气科技股份有限公司 | 35kV suspension type test terminal |
| CN203858327U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Terminal for testing partial discharge of 35kV or lower crosslinked polyethylene power cable |
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| Publication number | Publication date |
|---|---|
| CN103869229B (en) | 2017-02-15 |
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