CN204681063U - High-voltage cable middle joint - Google Patents
High-voltage cable middle joint Download PDFInfo
- Publication number
- CN204681063U CN204681063U CN201520409899.2U CN201520409899U CN204681063U CN 204681063 U CN204681063 U CN 204681063U CN 201520409899 U CN201520409899 U CN 201520409899U CN 204681063 U CN204681063 U CN 204681063U
- Authority
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- China
- Prior art keywords
- tube
- oversheath
- cable
- conductor connecting
- connecting tube
- 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.)
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Links
- 210000001503 joint Anatomy 0.000 title claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000002390 adhesive tape Substances 0.000 claims abstract description 9
- 239000004065 semiconductor Substances 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 238000009954 braiding Methods 0.000 claims description 6
- 230000035882 stress Effects 0.000 abstract description 25
- 230000005684 electric field Effects 0.000 abstract description 13
- 230000032683 aging Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002910 structure generation Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model discloses high-voltage cable middle joint, comprise oversheath, be wrapped in the stress evacuating glue of oversheath one end, cylinder screen, semi-conductive layer, intermediate joint tube and conductor connecting tube, described intermediate joint tube and conductor connecting tube are all positioned at oversheath and point-blank, the termination of the one adjacent conductor connecting tube in termination of intermediate joint tube, intermediate joint tube other end connecting cylinder screen, in the bottom of conductor connecting tube, semiconductor self-adhesive tape and semi-conductive layer are set, adjacent semiconductor self-adhesive tape one end, semi-conductive layer one termination, at the top of conductor connecting tube, core insulation layer is also set, on described cylinder screen, also cover has stress tube, described oversheath end also arranges Steel armor of cable, and Steel armor of cable is adjacent with stress tube.The utility model by said structure, can disperse the electric stress inserting cable shield incision position, ensures to insert cable Electric Field Distribution in high-voltage cable middle joint even, makes good, the ageing-resistant and good electrical property of high-voltage cable middle joint link place air-tightness.
Description
Technical field
The utility model relates to power domain, particularly, relates to high-voltage cable middle joint.
Background technology
Cable intermediate joint is the parts coupled together by two cables, and cable terminal and cable intermediate joint are referred to as electric cable accessories.Electric cable accessories should equally with cable body can long-term safety run, and has the useful life identical with cable.Each phase core of high-tension cable all has (copper) screen of a ground connection outward, forms radially-arranged electric field between conductor wire core and screen.That is, the electric field of normal cable is only from (copper) wire along the power line of half radial (copper) screen, and do not have the electric field (power line) of heart yearn axis, Electric Field Distribution is uniform.When two cables being linked together by transition joint, need to process cable end.When doing cable end, having peelled off screen, having changed the original Electric Field Distribution of cable, by produce to the totally unfavorable tangential electric field of insulation (along traverse shaft to power line).Concentrate to screen incision position at the power line peelling off screen heart yearn.Be exactly so the position that cable the most easily punctures at screen incision position, affect the useful life of electric cable accessories.In addition, existing cable transition joint cut-off part, because cable thickness is different, exists and loosens and electric stress, all can affect the normal use of cable.
Utility model content
Technical problem to be solved in the utility model is to provide high-voltage cable middle joint, this joint can disperse the electric stress inserting cable shield incision position, ensure to insert cable Electric Field Distribution in high-voltage cable middle joint even, make good, the ageing-resistant and good electrical property of high-voltage cable middle joint link place air-tightness.
The technical scheme in the invention for solving the above technical problem is: high-voltage cable middle joint, comprise oversheath, be wrapped in the stress evacuating glue of oversheath one end, cylinder screen, semi-conductive layer, intermediate joint tube and conductor connecting tube, described intermediate joint tube and conductor connecting tube are all positioned at oversheath and point-blank, the termination of the one adjacent conductor connecting tube in termination of intermediate joint tube, conductor connecting tube one end connecting cylinder screen, in the bottom of conductor connecting tube, semiconductor self-adhesive tape and semi-conductive layer are set, adjacent semiconductor self-adhesive tape one end, semi-conductive layer one termination, at the top of conductor connecting tube, core insulation layer is also set, on described cylinder screen, also cover has stress tube, described oversheath head end also arranges Steel armor of cable, and Steel armor of cable is adjacent with stress tube.When needing the high-tension cable connected to be connected by high-voltage cable middle joint by two, first by after the cable end process of high-tension cable, be connected with conductor connecting tube being inserted into intermediate joint tube respectively by oversheath two, be enclosed within the stress tube on copper shield, electric field stress through the screen incision position on the cable of copper shield can be disperseed, to ensure the two cable energy reliability services connected by cable intermediate joint.In addition, be wrapped in the stress evacuating glue of oversheath one end, specified impedance can be produced by sheath ends outside, and the space of filling between cover one end, outer family and stube cable, reach the effect of evacuating electric stress, after making cable intermediate joint stube cable, ensure good, the ageing-resistant and good electrical property of link place air-tightness.The setting of copper shield, passes through capacitance current when normal operation; When system is short-circuited, as the passage of short circuit current, also play the effect of electric field shielding simultaneously.
Described intermediate joint tube also arranges braiding copper mesh, and braiding cylinder net two ends are separately fixed on the inwall of oversheath.Bringing a small amount of oxygen in intermediate joint tube into for removing cable, avoiding being oxidized internal part.
Described oversheath outer cover has PVC containment vessel.Protection is connected to inner cable, and avoid outside moisture to the infringement of cable, retaining space makes cable in use dispel the heat, and plays fire-retardant effect.
The inside of described oversheath also arranges ground wire.Ground wire connects oversheath, too high voltages is introduced the earth by ground wire, avoids being injured by high pressure.
The diameter of described conductor connecting tube is less than the diameter of intermediate joint tube.Two cables are convenient to connect.
Described oversheath two diameter is less than the diameter of mid portion.Cable is connected more fastening, air-tightness is good, ageing-resistant.
To sum up, the beneficial effects of the utility model are:
1, the utility model can disperse the electric stress inserting cable shield incision position, ensures to insert cable Electric Field Distribution in high-voltage cable middle joint even, makes good, the ageing-resistant and good electrical property of high-voltage cable middle joint link place air-tightness.
2, the stress evacuating glue of oversheath one end is wrapped in, specified impedance can be produced by sheath ends outside, and the space of filling between oversheath one end and stube cable, reach the effect of evacuating electric stress, after making cable intermediate joint stube cable, ensure good, the ageing-resistant and good electrical property of link place air-tightness.
A small amount of oxygen in the air brought into when 3, weaving cylinder net for removing cable insertion, avoids oxygen and internal structure generation oxidation reaction, affects the normal use of cable.
Accompanying drawing explanation
Fig. 1 is cutaway view of the present utility model.
Mark and corresponding parts title in accompanying drawing: 1, oversheath; 2, stress evacuating glue; 3, Steel armor of cable; 4, copper shield; 5, semi-conductive layer; 6, core insulation layer; 7, ground wire; 8, PVC containment vessel; 9, semiconductor self-adhesive tape; 10, conductor connecting tube; 11, intermediate joint tube; 12, copper mesh is woven; 13, stress tube.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the utility model comprises oversheath 1, is wrapped in the stress evacuating glue 2 of oversheath 1 one end, cylinder screen 4, semi-conductive layer 5, intermediate joint tube 11 and conductor connecting tube 10.Intermediate joint tube 11 and conductor connecting tube 10 are all positioned at oversheath 1 and point-blank, the termination of the one adjacent conductor connecting tube 10 in termination of intermediate joint tube 11, conductor connecting tube 10 one end connecting cylinder screen 4, semiconductor self-adhesive tape 9 and semi-conductive layer 5 are set in the bottom of conductor connecting tube 10, adjacent semiconductor self-adhesive tape 9 one end, semi-conductive layer 5 one termination, also arranges core insulation layer 6 at the top of conductor connecting tube 10.On cylinder screen 4, also cover has stress tube 13; Oversheath 1 head end also arranges Steel armor of cable 3, and Steel armor of cable 3 is adjacent with stress tube 13.
When needing the high-tension cable connected to be connected by high-voltage cable middle joint by two, first by after the cable end process of high-tension cable, be connected with conductor connecting tube being inserted into intermediate joint tube respectively by oversheath two, be enclosed within the stress tube on copper shield, electric field stress through the screen incision position on the cable of copper shield can be disperseed, to ensure the two cable energy reliability services connected by cable intermediate joint.In addition, be wrapped in the stress evacuating glue of oversheath one end, specified impedance can be produced by sheath ends outside, and the space of filling between cover one end, outer family and stube cable, reach the effect of evacuating electric stress, after making cable intermediate joint stube cable, ensure good, the ageing-resistant and good electrical property of link place air-tightness.The setting of copper shield, passes through capacitance current when normal operation; When system is short-circuited, as the passage of short circuit current, also play the effect of electric field shielding simultaneously.
Embodiment 2:
The present embodiment increases following technical characteristic on the basis of embodiment 1: intermediate joint tube 11 is also arranged braiding copper mesh 12, and braiding cylinder net 12 two ends are separately fixed on the inwall of oversheath 1.Bringing a small amount of oxygen in intermediate joint tube into for removing cable, avoiding being oxidized internal part.
Embodiment 3:
The present embodiment increases following technical characteristic on the basis of above-described embodiment: oversheath 1 outer cover has PVC containment vessel 8.Protection is connected to inner cable, and avoid outside moisture to the infringement of cable, retaining space makes cable in use dispel the heat, and plays fire-retardant effect.
The inside of oversheath 1 also arranges ground wire 7.Ground wire connects oversheath, too high voltages is introduced the earth by ground wire, avoids being injured by high pressure.
The diameter of conductor connecting tube 10 is less than the diameter of intermediate joint tube 11.
Oversheath 1 two diameter is less than the diameter of mid portion.Cable is connected more fastening, air-tightness is good, ageing-resistant.
As mentioned above, the utility model can be realized preferably.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (6)
1. high-voltage cable middle joint, it is characterized in that, comprise oversheath (1), be wrapped in the stress evacuating glue (2) of oversheath (1) one end, cylinder screen (4), semi-conductive layer (5), intermediate joint tube (11) and conductor connecting tube (10), described intermediate joint tube (11) and conductor connecting tube (10) are all positioned at oversheath (1) and point-blank, the termination of the one adjacent conductor connecting tube in termination (10) of intermediate joint tube (11), conductor connecting tube (10) one end connecting cylinder screen (4), semiconductor self-adhesive tape (9) and semi-conductive layer (5) are set in the bottom of conductor connecting tube (10), adjacent semiconductor self-adhesive tape (9) one end, semi-conductive layer (5) termination, at the top of conductor connecting tube (10), core insulation layer (6) is also set, on described cylinder screen (4), also cover has stress tube (13), described oversheath (1) head end also arranges Steel armor of cable (3), and Steel armor of cable (3) is adjacent with stress tube (13).
2. high-voltage cable middle joint according to claim 1, is characterized in that, described intermediate joint tube (11) is also arranged braiding copper mesh (12), and braiding cylinder net (12) two ends are separately fixed on the inwall of oversheath (1).
3. high-voltage cable middle joint according to claim 1, is characterized in that, described oversheath (1) outer cover has PVC containment vessel (8).
4. the high-voltage cable middle joint according to claim 1 or 3, is characterized in that, the inside of described oversheath (1) also arranges ground wire (7).
5. high-voltage cable middle joint according to claim 1, is characterized in that, the diameter of described conductor connecting tube (10) is less than the diameter of intermediate joint tube (11).
6. high-voltage cable middle joint according to claim 1, is characterized in that, described oversheath (1) two diameter is less than the diameter of mid portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409899.2U CN204681063U (en) | 2015-06-15 | 2015-06-15 | High-voltage cable middle joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520409899.2U CN204681063U (en) | 2015-06-15 | 2015-06-15 | High-voltage cable middle joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204681063U true CN204681063U (en) | 2015-09-30 |
Family
ID=54180731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520409899.2U Active CN204681063U (en) | 2015-06-15 | 2015-06-15 | High-voltage cable middle joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204681063U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599826A (en) * | 2017-10-01 | 2019-04-09 | 镇江长河电力技术有限公司 | A kind of composite material high temperature-resistant cable |
| CN112531623A (en) * | 2020-11-06 | 2021-03-19 | 国网河南省电力公司鹤壁供电公司 | Quick-connection type cable middle head connecting device |
-
2015
- 2015-06-15 CN CN201520409899.2U patent/CN204681063U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599826A (en) * | 2017-10-01 | 2019-04-09 | 镇江长河电力技术有限公司 | A kind of composite material high temperature-resistant cable |
| CN112531623A (en) * | 2020-11-06 | 2021-03-19 | 国网河南省电力公司鹤壁供电公司 | Quick-connection type cable middle head connecting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |