CN203166451U - An anti-breakdown high-voltage cable head - Google Patents
An anti-breakdown high-voltage cable head Download PDFInfo
- Publication number
- CN203166451U CN203166451U CN 201320167052 CN201320167052U CN203166451U CN 203166451 U CN203166451 U CN 203166451U CN 201320167052 CN201320167052 CN 201320167052 CN 201320167052 U CN201320167052 U CN 201320167052U CN 203166451 U CN203166451 U CN 203166451U
- Authority
- CN
- China
- Prior art keywords
- cable head
- cable
- breakdown
- grading ring
- masking foil
- 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 - Fee Related
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011888 foil Substances 0.000 claims description 19
- 230000000873 masking effect Effects 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 4
- 238000012946 outsourcing Methods 0.000 claims description 3
- 238000000819 phase cycle Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 2
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 2
- 238000007664 blowing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses an anti-breakdown high-voltage cable head comprising three phases of stress tubes. Shielding layers are disposed on the stress tubes within a range from a position 1 cm away from an upper port to a position 10 cm away from a cable head three-way port. A grading ring is disposed at the wrapping insulating port of the cable head three-way port. The shielding layer comprises tinfoil wrapped around the cables and copper core wires wrapped around the tinfoil. The anti-breakdown high-voltage cable head has beneficial effects that the shielding layers and the grading ring are arranged on the head of a crosslinked polyethylene cable so as to effectively prevent the cable head from generating a phenomenon of breakdown, that the anti-breakdown high-voltage cable head uses material with low cost and has simple production technology, and that the improved cable head operates stably and well in producing and using processes so as to substantially reduce economic losses of an enterprise and indirectly reduce the operating cost of a grid company.
Description
Technical field
It is the high-tension cable technical field that the utility model relates to electric power.
Background technology
Along with supplying growing with each passing day of need for electricity, the use of power cable is more and more, and power cable with cross-linked polyethylene insulation relies on its good electric property, heat resistance and mechanical performance, is used widely.But discovered in recent years, in the process of making cable terminal, be subjected to the influence of factors such as the cable terminal annex is selected for use, manufacture craft, installation, line load, after the long-play use, the part cable end is along with the growth of running time, and partial discharge phenomenon can appear in its bifurcation, if to this untimely adopting an effective measure, cause the cable terminal breakdown accident easily, be commonly called as " cable terminal is blown out ".The light economic loss of then bringing stoppings production, reduction product quality, waste of raw materials to enterprise of this phenomenon, heavy then bring device damage, fire, personnel casualty accidents to enterprise.Also influence the sale of electricity service quality of electric company in addition; In addition, the generation of this situation causes the damage of grid company substation equipment simultaneously, brings considerable influence to safety in production, has also improved the operation cost of grid company.At present, blowing out the solution of accident for cable terminal mainly is to allow enterprise have a power failure stop production, and makes the terminal cable head again, and this maintain and replace needs huge manpower and materials.Therefore, press for a kind of effective way and prevent the generation of this type of accident.
The utility model content
Technical problem to be solved in the utility model provides a kind of anti-breakdown high-voltgae pothead that can effectively avoid cable terminal to puncture blowing out phenomenon to take place.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of anti-breakdown high-voltgae pothead comprises the three-phase stress tube, every corresponding solenoid suitable for reading 1 centimetre to the cable end junctions the cable in 10 cm range be provided with screen; An outsourcing insulation mouthful position, cable end junctions is provided with grading ring.
Described screen comprises the copper core that is wrapped in the masking foil on the cable and is wrapped in the masking foil outside.
The canoe of described copper core is that three copper cores are crossed as Y type bifurcated mutually, and is fastenedly connected with the cable grounding line.
Described grading ring is the annulus that the 60A fuse is made in the welding of counterpart place, and grading ring and masking foil, copper core are combined closely.
Described masking foil and copper core outside also are enclosed with the outside masking foil of one deck; The said external masking foil is wound with the ambroin band outward.
The outermost layer at described grading ring position is wound with black ambroin band, and the most external of every corresponding solenoid is wound with the ambroin band of corresponding phase sequence color.
The utility model installs grading ring and screen additional at original cable end, under the situation that does not change former whole cable structure, allow the electric field of screen overlay area evenly be distributed, reduced the possibility that free discharge takes place for cable end stress tube screen and insulating barrier intersection air gap, reduced the external condition influence and formed the chance of corona point down, punctured and blow out the incidence of fault thereby reduce cable end greatly.
The beneficial effect that adopts technique scheme to produce is:
By installing screen and grading ring additional in twisted polyethylene cable head position, can effectively avoid cable terminal to puncture blowing out the generation of phenomenon.Material therefor is cheap, and manufacture craft is simple.Improved cable end is stable good in producing practical process, has significantly reduced the economic loss of enterprise.Reduce the operation cost of grid company simultaneously indirectly.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Wherein, 1, stress tube, 2, masking foil, 3, copper core, 4, grading ring.
Embodiment
Embodiment as shown in Figure 1 as can be known, anti-breakdown high-voltgae pothead described in the utility model comprises three-phase stress tube 1, every corresponding solenoid 1 suitable for reading 1 centimetre to the cable end junctions the cable in 10 cm range be provided with screen; An outsourcing insulation mouthful position, cable end junctions is provided with grading ring 4.
Above-mentioned screen comprises the masking foil 2 that is wrapped on the cable and the copper core 3 that is wrapped in masking foil 2 outsides.
The canoe of above-mentioned copper core 3 is that three copper cores are crossed as Y type bifurcated mutually, and is fastenedly connected with the cable grounding line.
The annulus that above-mentioned grading ring 4 is made in the welding of counterpart place for the 60A fuse, grading ring 4 is combined closely with masking foil 2, copper core 3.
Above-mentioned masking foil 2 and copper core 3 outsides also are enclosed with the outside masking foil of one deck; The said external masking foil is wound with the ambroin band outward.
The outermost layer at above-mentioned grading ring 4 positions is wound with black ambroin band, and the most external of every corresponding solenoid 1 is wound with the ambroin band of corresponding phase sequence color.
By installing grading ring and screen additional at original cable end, under the situation that does not change former whole cable structure, allow the electric field of screen overlay area evenly be distributed, reduced the possibility that free discharge takes place for cable end stress tube screen and insulating barrier intersection air gap, reduced the external condition influence and formed the chance of corona point down, punctured and blow out the incidence of fault thereby reduce cable end greatly.
Claims (6)
1. an anti-breakdown high-voltgae pothead is characterized in that, comprises three-phase stress tube (1), every corresponding solenoid (1) suitable for reading 1 centimetre to the cable end junctions the cable in 10 cm range be provided with screen; An outsourcing insulation mouthful position, cable end junctions is provided with grading ring (4).
2. anti-breakdown high-voltgae pothead according to claim 1 is characterized in that, described screen comprises the masking foil (2) that is wrapped on the cable and is wrapped in the outside copper core (3) of masking foil (2).
3. anti-breakdown high-voltgae pothead according to claim 2 is characterized in that, the canoe of described copper core (3) is that three copper cores are crossed as Y type bifurcated mutually, and is fastenedly connected with the cable grounding line.
4. anti-breakdown high-voltgae pothead according to claim 1 and 2 is characterized in that, the annulus that described grading ring (4) is made in the welding of counterpart place for the 60A fuse, and grading ring (4) is combined closely with masking foil (2), copper core (3).
5. anti-breakdown high-voltgae pothead according to claim 4 is characterized in that, described masking foil (2) and copper core (3) outside also are enclosed with the outside masking foil of one deck; The said external masking foil is wound with the ambroin band outward.
6. anti-breakdown high-voltgae pothead according to claim 5 is characterized in that, the outermost layer at described grading ring (4) position is wound with black ambroin band, and the most external of every corresponding solenoid (1) is wound with the ambroin band of corresponding phase sequence color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320167052 CN203166451U (en) | 2013-04-07 | 2013-04-07 | An anti-breakdown high-voltage cable head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320167052 CN203166451U (en) | 2013-04-07 | 2013-04-07 | An anti-breakdown high-voltage cable head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166451U true CN203166451U (en) | 2013-08-28 |
Family
ID=49027611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320167052 Expired - Fee Related CN203166451U (en) | 2013-04-07 | 2013-04-07 | An anti-breakdown high-voltage cable head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166451U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869104A (en) * | 2014-04-02 | 2014-06-18 | 上海华普电缆有限公司 | Stress ring for partial discharge tests and high-voltage insulation tests on power cable of 10 kV or lower |
| CN104319727A (en) * | 2014-11-14 | 2015-01-28 | 中科英华高技术股份有限公司 | Cable connection device and method |
| CN111697404A (en) * | 2020-05-23 | 2020-09-22 | 国家电网有限公司 | Cold connection method for tin foil grounding lead of high-voltage cable |
-
2013
- 2013-04-07 CN CN 201320167052 patent/CN203166451U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869104A (en) * | 2014-04-02 | 2014-06-18 | 上海华普电缆有限公司 | Stress ring for partial discharge tests and high-voltage insulation tests on power cable of 10 kV or lower |
| CN104319727A (en) * | 2014-11-14 | 2015-01-28 | 中科英华高技术股份有限公司 | Cable connection device and method |
| CN111697404A (en) * | 2020-05-23 | 2020-09-22 | 国家电网有限公司 | Cold connection method for tin foil grounding lead of high-voltage cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203166451U (en) | An anti-breakdown high-voltage cable head | |
| CN103630807A (en) | Partial discharge model for staggering of stress cone of 10kV cable intermediate joint | |
| CN204155682U (en) | For the multicore guide rod type porcelain insulator sleeve pipe of high-voltage electric power system | |
| CN202940052U (en) | Optical fiber composite overhead insulation cable | |
| CN105070491B (en) | Double-splitting photovoltaic variable structure | |
| CN103944163B (en) | A kind of compound transformer substation system | |
| CN203573676U (en) | Highly soft cable | |
| CN205789263U (en) | A kind of high voltage power cable | |
| CN203673026U (en) | Misplaced partial discharge model for stress cone of 10kV-cable intermediate joint | |
| CN204215865U (en) | A kind of 20kV dry-type earth transformer | |
| CN102254614A (en) | Aluminum wire armored ultrahigh pressure power cable | |
| CN201758014U (en) | Frequency-conversion generator cable with a control line core | |
| CN203260458U (en) | Electrostatic shielding device for dry-type isolation transformer of more than 6kV | |
| CN202549462U (en) | Insulation overhead cable | |
| CN202905248U (en) | Wear resistant cable for ladle vehicle | |
| CN206976278U (en) | A kind of drop type transformer station high-tension fuse | |
| CN201698820U (en) | Crosslinked polyethylene insulation steel strip armored polyethylene sheath power cable | |
| CN205751686U (en) | A kind of novel rated voltage 0.6/1kV power cable | |
| CN203895833U (en) | Switching instrument of cable grounding box in grounding protective mode | |
| CN203895835U (en) | Switching device of high-voltage cable protective system | |
| CN205231314U (en) | Disconnect secondary circuit and termination do not have a power failure and and meet terminal arrangement thereof | |
| CN202339750U (en) | Novel variable frequency cable | |
| CN102088172B (en) | Totally enclosed screen top miniature busbar combination device | |
| CN203118629U (en) | Medium-voltage ethylene propylene insulation power flexible cable | |
| CN107204234A (en) | A kind of high-power high voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20180407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |