CN204514965U - A kind of cable access device of dielectric loss checkout equipment - Google Patents
A kind of cable access device of dielectric loss checkout equipment Download PDFInfo
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- CN204514965U CN204514965U CN201520169854.2U CN201520169854U CN204514965U CN 204514965 U CN204514965 U CN 204514965U CN 201520169854 U CN201520169854 U CN 201520169854U CN 204514965 U CN204514965 U CN 204514965U
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- cable
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- screw thread
- insulation
- sleeve pipe
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- 238000009413 insulation Methods 0.000 claims abstract description 56
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000000069 prophylactic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model provides a kind of cable access device of dielectric loss checkout equipment, comprises two cable splices, and this cable splice comprises columnar insulation course sleeve pipe, screw thread clamping sleeve, insulation protective jacket and conduction core bar; One end tube wall of insulation course sleeve pipe is combined with two clamping screws; The equal rotary type of screw rod end of two clamping screws is provided with one piece of arc cover plate, and the intrados of two pieces of arc cover plates is relative; Insulation protective jacket fixed cover is located on conduction core bar, and excircle in the middle part of insulation protective jacket is provided with a circle flange collar; One end of screw thread clamping sleeve screws on the other end of insulation course sleeve pipe, and insulation protective jacket inserts in screw thread clamping sleeve, and the other end of screw thread clamping sleeve fastens flange collar; The terminals of conduction core bar stretch out outside insulation protective jacket, and contact jaw stretches in insulation course sleeve pipe.This cable access device can access tested cable fast and without damage, and not only structure is reliable but also contact is good, has good application prospect.
Description
Technical field
The utility model relates to a kind of cable access device, especially a kind of cable access device for dielectric loss checkout equipment.
Background technology
In Construction of Intercity Network, power cable takes up an area less with it, the performance such as attractive in appearance, reliable, one of main mode becoming electric power transfer, wherein based on the twisted polyethylene cable of 35kV and following grade.Along with the fast development of electrical network, distribution, the application of cable is also more and more extensive.The cable laying rate in a city also becomes the important symbol of a measurement Construction of Intercity Network level gradually.
Cable prophylactic tria is the important channel finding cable incipient fault, and megger test is the most frequently used a kind of test method, can find insulation defect by the change of insulation resistance.But it is low that the shortcoming of insulation measurement is test voltage, be difficult to the potentiality defect finding cable, the cable insulation problem of aging especially caused water tree is difficult to diagnosis, needs to judge its state in conjunction with other pilot project analyses.DC voltage withstand test evaluates the most straightforward procedure (testing equipment is light) of cable insulation state.In standard comparatively early, DC experiment is used for the reception test after cable laying.But along with the widespread use of rubber plastic cable in electric line, find that DC voltage withstand test exists obvious defect on detection rubber plastic cable after deliberation.Insulating resistance of cable and withstand voltage test can only reflect the quality of cable insulation general status, more to insulate the aging development trend of situation, cable and need the relevant informations such as the measure taked, also will be obtained by Partial Discharge Detection about cable.Dielectric loss is as the dielectric of insulating material under high voltage electric field action, due to the lag-effect of dielectric conductance and dielectric polorization, and the energy loss caused therein.Dielectric loss can make insulation temperature rise, and impels insulating material aging, can cause the thermal breakdown of insulation and lose insulating property when temperature rise is serious.Visible, dielectric loss weighs an important indicator of insulating property.
But existing dielectric loss checkout equipment is when by tested cable detection circuit for access, needs to tear down the two ends of detection streamer, damage is caused to tested cable, also reduces the access efficiency of cable simultaneously.
Summary of the invention
To be existing checkout equipment when accessing cable can cause cable two ends the technical problems to be solved in the utility model damages and the efficiency of access is not high.
In order to solve the problems of the technologies described above, the utility model provides a kind of cable access device of dielectric loss checkout equipment, comprises two cable splices be connected with two terminals of dielectric loss checkout equipment; Cable splice comprises columnar insulation course sleeve pipe, screw thread clamping sleeve, insulation protective jacket and conduction core bar; One end tube wall of insulation course sleeve pipe is combined with two clamping screws, two clamping screws are positioned in the same radial line of insulation course sleeve pipe; The equal rotary type of screw rod end of two clamping screws is provided with one piece of arc cover plate, and arc cover plate is positioned at insulation course sleeve pipe, and the intrados of two pieces of arc cover plates is relative; Insulation protective jacket fixed cover is located on conduction core bar, and excircle in the middle part of insulation protective jacket is provided with a circle flange collar; One end of screw thread clamping sleeve screws on the other end of insulation course sleeve pipe, and insulation protective jacket inserts in screw thread clamping sleeve, and the other end of screw thread clamping sleeve fastens flange collar; The terminals of conduction core bar stretch out outside insulation protective jacket, and contact jaw stretches in insulation course sleeve pipe.
Adopt insulation course casing pipe sleeve to be located on cable detection end, make the contact jaw of conduction core bar contact with the core of cable thus be accessed by cable, improve the access efficiency of cable, and without the need to tearing down the protective seam of cable; Adopt two blocks of arc-shaped cover plates to grip, effectively cable access device can not only be fixed on cable detection end, and can regulate according to the thickness of cable, improve the universality of cable access device; Adopt screw thread clamping sleeve to screw and promote the core that conductive cores masthead lives tested cable, contact effect can be strengthened, improve the degree of accuracy detected; Adopt insulation protective jacket that the electric signal conducted electricity on core bar can be prevented to be interfered, further increase the degree of accuracy of detection.
As further improvement of the utility model scheme, the intrados of arc cover plate is at least provided with an anti-skidding rib.Adopt anti-skidding rib can prevent arc cover plate from coming off from the test side of tested cable, improve the reliability of device.
As further improvement of the utility model scheme, the contact jaw of conduction core bar is provided with conical head.Adopt conical head effectively can improve the contact effect of the core of conduction core bar and tested cable, improve the degree of accuracy detected.
As further improvement of the utility model scheme, the other end of screw thread clamping sleeve is provided with hexagon head.Hexagon head is adopted can conveniently to rotate screw thread clamping sleeve.
The beneficial effects of the utility model are: (1) adopts insulation course casing pipe sleeve to be located on cable detection end, the contact jaw of conduction core bar is made to contact with the core of cable thus be accessed by cable, improve the access efficiency of cable, and without the need to tearing down the protective seam of cable; (2) adopt two blocks of arc-shaped cover plates to grip, effectively cable access device can not only be fixed on cable detection end, and can regulate according to the thickness of cable, improve the universality of cable access device; (3) adopt screw thread clamping sleeve to screw and promote the core that conductive cores masthead lives tested cable, contact effect can be strengthened, improve the degree of accuracy detected; (4) adopt insulation protective jacket that the electric signal conducted electricity on core bar can be prevented to be interfered, further increase the degree of accuracy of detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A place cut-open view in Fig. 1;
Fig. 3 is right view of the present utility model;
Fig. 4 is left view of the present utility model;
Fig. 5 is using state view of the present utility model.
Embodiment
As Figure 1-4, the cable access device that the utility model provides a kind of dielectric loss checkout equipment comprises: comprise two cable splices be connected with two terminals of dielectric loss checkout equipment; This cable splice comprises columnar insulation course sleeve pipe 1, screw thread clamping sleeve 2, insulation protective jacket 4 and conduction core bar 5; One end tube wall of insulation course sleeve pipe 1 is combined with two clamping screws, 6, two clamping screws 6 to be positioned in the same radial line of insulation course sleeve pipe 1; Be provided with one piece of arc cover plate 7 at the equal rotary type of screw rod end of two clamping screws 6, arc cover plate 7 is positioned at insulation course sleeve pipe 1, and the intrados of two pieces of arc cover plates 7 is relative; Insulation protective jacket 4 fixed cover is located on conduction core bar 5, and excircle in the middle part of insulation protective jacket 4 is provided with a circle flange collar 9; One end of screw thread clamping sleeve 2 screws on the other end of insulation course sleeve pipe 1, and insulation protective jacket 4 inserts in screw thread clamping sleeve 2, and the other end of screw thread clamping sleeve 2 fastens flange collar 9; The terminals of conduction core bar 5 stretch out outside insulation protective jacket 4, and contact jaw stretches in insulation course sleeve pipe 1; The intrados of arc cover plate 7 is provided with three anti-skidding ribs 8; The contact jaw of conduction core bar 5 is provided with conical head 10; The other end of screw thread clamping sleeve 2 is provided with hexagon head 3.
As shown in Figure 5, the cable access device of dielectric loss checkout equipment of the present utility model in use, first by sheathed for the insulation course sleeve pipe 1 of two cable splices by the two ends of tested cable 11, and turn clamping screw 6 makes arc cover plate 7 be compressed on the protective seam of tested cable 11, turn hexagon head 3 again, screw thread clamping sleeve 2 is made to screw in insulation course sleeve pipe 1, and drive the contact jaw of conduction core bar 5 to withstand on the core of tested cable 11, and then the terminals of the conduction core bar 5 of two cable splices are connected respectively on two input ends of dielectric loss checkout equipment, thus realize the access of tested cable 11, carry out dielectric loss detection.
Claims (4)
1. a cable access device for dielectric loss checkout equipment, is characterized in that: comprise two cable splices be connected with two terminals of dielectric loss checkout equipment; Described cable splice comprises columnar insulation course sleeve pipe (1), screw thread clamping sleeve (2), insulation protective jacket (4) and conduction core bar (5); One end tube wall of described insulation course sleeve pipe (1) is combined with two clamping screws (6), two clamping screws (6) are positioned in the same radial line of insulation course sleeve pipe (1); The equal rotary type of screw rod end of two clamping screws (6) is provided with one piece of arc cover plate (7), described arc cover plate (7) is positioned at insulation course sleeve pipe (1), and the intrados of two pieces of arc cover plates (7) is relative; Described insulation protective jacket (4) fixed cover is located in conduction core bar (5), and is provided with a circle flange collar (9) on the excircle at insulation protective jacket (4) middle part; One end of described screw thread clamping sleeve (2) screws on the other end of insulation course sleeve pipe (1), described insulation protective jacket (4) inserts in screw thread clamping sleeve (2), and the other end of screw thread clamping sleeve (2) fastens flange collar (9); The terminals of described conduction core bar (5) stretch out insulation protective jacket (4) outward, and contact jaw stretches in insulation course sleeve pipe (1).
2. the cable access device of dielectric loss checkout equipment according to claim 1, is characterized in that: the intrados of described arc cover plate (7) is at least provided with an anti-skidding rib (8).
3. the cable access device of dielectric loss checkout equipment according to claim 1 and 2, is characterized in that: the contact jaw of described conduction core bar (5) is provided with conical head (10).
4. the cable access device of dielectric loss checkout equipment according to claim 1 and 2, is characterized in that: the other end of described screw thread clamping sleeve (2) is provided with hexagon head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169854.2U CN204514965U (en) | 2015-03-24 | 2015-03-24 | A kind of cable access device of dielectric loss checkout equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520169854.2U CN204514965U (en) | 2015-03-24 | 2015-03-24 | A kind of cable access device of dielectric loss checkout equipment |
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| Publication Number | Publication Date |
|---|---|
| CN204514965U true CN204514965U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520169854.2U Active CN204514965U (en) | 2015-03-24 | 2015-03-24 | A kind of cable access device of dielectric loss checkout equipment |
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| CN (1) | CN204514965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922310A (en) * | 2016-06-12 | 2016-09-07 | 国家电网公司 | Cut sheet manufacturing device of cable crosslinked polyethylene insulation layer of power distribution network |
| CN115616365A (en) * | 2022-12-19 | 2023-01-17 | 佛山市顺德区广意通讯电缆有限公司 | Testing machine for communication cable detection |
-
2015
- 2015-03-24 CN CN201520169854.2U patent/CN204514965U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922310A (en) * | 2016-06-12 | 2016-09-07 | 国家电网公司 | Cut sheet manufacturing device of cable crosslinked polyethylene insulation layer of power distribution network |
| CN115616365A (en) * | 2022-12-19 | 2023-01-17 | 佛山市顺德区广意通讯电缆有限公司 | Testing machine for communication cable detection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |