CN208971115U - A kind of ultra-high voltage electric cable joint mounting structure - Google Patents
A kind of ultra-high voltage electric cable joint mounting structure Download PDFInfo
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- CN208971115U CN208971115U CN201821666409.7U CN201821666409U CN208971115U CN 208971115 U CN208971115 U CN 208971115U CN 201821666409 U CN201821666409 U CN 201821666409U CN 208971115 U CN208971115 U CN 208971115U
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Abstract
The utility model relates to a kind of ultra-high voltage electric cable joint mounting structure, solving the problem of the EHV transmission technology in China, there are technical bottlenecks to limit EHV transmission efficiency on connector.The present apparatus includes two cables being mutually butted, the cable butting end from outside to inside each layer successively remove it is stepped, the core of two cables is mutually butted, outside is socketed copper pipe at core docking, copper pipe is externally provided with shielding case, and semi-conductive tape, copper mesh, insulating self-adhesive band are successively wound with outside shielding case, and the outside of the insulating self-adhesive band is equipped with fitting sleeve, the both ends of fitting sleeve are overlapped on the oversheath of two cables, are filled between insulating self-adhesive band inside fitting sleeve and are set colloid.The butt end core of two cable of the utility model is connected using copper pipe, the structures such as properly protect outside at the docking, insulate, shield, and it is connected as entirety in the form of outside joint with glue filling, allow reliablely and stablely to convey electric current at docking, and there is stronger axial tensile-strength.
Description
Technical field
The invention belongs to EHV transmission technical fields, are related to a kind of extra-high-tension cable, in particular to a kind of extra-high voltage
Cable joint mounting structure.
Background technique
With the continuous dilatation of China's super-large city, electricity consumption is constantly increasing, and the existing city 220kV power transmission network has been got over
It more can not meet the power reguirements of super-large city, transmission voltage plays a crucial role on the loss influence in electricity transmission process.Therefore,
How limited space is utilized, the electric power transmission cable system using larger capacity such as 500kV enters big city, is to reduce transmission of electricity
The key technology of loss, and have become inevitable development trend.In recent years, China is produced in 500kV high-tension cable and attachment
Aspect achieves not small progress, and the product performance index produced is able to satisfy national standard and IEC standard.However due to attached
Part joint process it is immature, unstable and lack of standardization, cause joint influence Integral cable power transmission efficiency, be superelevation
Where the bottleneck for pressing technology of transmission of electricity.
Summary of the invention
The purpose of this utility model is that for China EHV transmission technology on connector there are technical bottleneck, limitation
The problem of EHV transmission efficiency, provide a kind of ultra-high voltage electric cable joint mounting structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of ultra-high voltage electric cable joint installation knot
Structure, including two cables being mutually butted, the cable successively includes core, interior semi-conductive layer, insulating layer, outer half from inside to outside
Conductive layer, water blocking layer, metal screen layer, oversheath, it is characterised in that: each layer is successively removed from outside to inside at the cable butting end
Stepped, the core of two cables is mutually butted, and outside is socketed copper pipe at core docking, and copper pipe is externally provided with shielding case, is shielded
Cover outer sheath is equipped with stress cone, and the both ends difference anchor ear of stress cone extends at the both ends of banding stress and stress cone on the insulating layer
Overlap joint is successively wound with semi-conductive tape, copper mesh, insulating self-adhesive band to outer semiconducting layer outside stress cone, and the two of the semi-conductive tape
To the water blocking layer of two end cables, the copper mesh both ends are overlapped to the metal screen layer of two cables, the insulating self-adhesive band end overlap joint
The outside at the fully wrapped around copper mesh both ends in both ends, the insulating self-adhesive band is equipped with fitting sleeve, and the both ends of fitting sleeve are overlapped on two cables
Oversheath on, filled between insulating self-adhesive band inside fitting sleeve and set colloid.The butt end core of two cables is docked using copper pipe
Connection, at the docking outside the structures such as properly protect, insulate, shield, and be connected as entirety in the form of outside joint with glue filling,
Allow reliablely and stablely to convey electric current at docking, and there is stronger axial tensile-strength.
Preferably, the copper pipe, which is externally wrapped with, is provided with copper braid over braid, copper braid over braid elasticity fills shielding case and copper pipe
Between space.
Preferably, the shielding case is put together by two half shells divided along axis section.
Preferably, described winding 6-10 layers of insulating self-adhesive band.
Preferably, being additionally provided with PVC tape on the outside of the insulating self-adhesive band.
Preferably, the fitting sleeve both ends and oversheath lap-joint are wound with adhesive waterproof tape, winding on the outside of adhesive waterproof tape
There is PVC protective layer.
The butt end core of two cable of the utility model is connected using copper pipe, at the docking outside properly protect, absolutely
The structures such as edge, shielding, and it is connected as entirety in the form of outside joint with glue filling, allow reliablely and stablely to convey electricity at docking
Stream, and there is stronger axial tensile-strength.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model.
In figure: 1, oversheath, 2, metal screen layer, 3, water blocking layer, 4, outer semiconducting layer, 5, insulating layer, 6, core, 7, copper
Pipe, 8, copper braid over braid, 9, shielding case, 10, semi-conductive tape, 11, copper mesh, 12, insulating self-adhesive band, 13, colloid, 14, fitting sleeve,
15, adhesive waterproof tape, 16, PVC protective layer, 17, stress cone.
Specific embodiment
Below by specific embodiment and in conjunction with attached drawing, the present invention will be further described.
Embodiment: a kind of ultra-high voltage electric cable joint mounting structure, as shown in Figure 1.The present apparatus includes two be mutually butted
Cable, the cable successively include core 6, interior semi-conductive layer, insulating layer 5, outer semiconducting layer 4, water blocking layer 3, gold from inside to outside
Belong to shielded layer 2, oversheath 1.Each layer successively removes stepped, the core 6 of two cables from outside to inside at the cable butting end
It is mutually butted, outside is socketed copper pipe 7 at core docking, and copper pipe is externally provided with shielding case 9, and copper pipe 7, which is externally wrapped with, is provided with copper braiding
Band 8, copper braid over braid elasticity fill the space between shielding case 9 and copper pipe 7.Shielding case is covered by divide along axis section two and half
Body is put together.Shielding case outer sheath be equipped with stress cone 17, stress cone both ends difference anchor ear on insulating layer 5 banding stress,
And the both ends of stress cone extend overlap joint to outer semiconducting layer 4, and semi-conductive tape 10, copper mesh 11, absolutely are successively wound with outside stress cone 17
Originate from adhesive tape 12, the both ends of the semi-conductive tape 10 are overlapped to the water blocking layer 3 of two end cables, and 11 both ends of copper mesh are overlapped to two
The metal screen layer 2 of cable, 6-10 layers of 12 winding of insulating self-adhesive band, fully wrapped around 11 both ends of copper mesh in both ends, the insulation
There is PVC tape in the outside of self-adhesive tape.Outer cover at two cable butting connectors is equipped with fitting sleeve 14, and the both ends of fitting sleeve are overlapped on
On the oversheath of two cables, is filled between insulating self-adhesive band inside fitting sleeve and set colloid 13.Fitting sleeve both ends and oversheath overlap
Place is wound with adhesive waterproof tape 15, is wound with PVC protective layer 16 on the outside of adhesive waterproof tape.
Present apparatus butt end core is connected using copper pipe, at the docking outside the knot such as properly protect, insulate, shield
Structure, and be connected as entirety in the form of outside joint with glue filling, allows reliablely and stablely to convey electric current at docking, and have compared with
Strong axial tensile-strength.
Claims (6)
1. a kind of ultra-high voltage electric cable joint mounting structure, including two cables being mutually butted, the cable is from inside to outside successively
Including core, interior semi-conductive layer, insulating layer, outer semiconducting layer, water blocking layer, metal screen layer, oversheath, it is characterised in that: institute
Stating cable butting end, each layer is successively removed stepped from outside to inside, and the core of two cables is mutually butted, at core docking outside
Portion is socketed copper pipe, and copper pipe is externally provided with shielding case, and shielding case outer sheath is equipped with stress cone, and the both ends of stress cone distinguish anchor ear and insulating
The both ends of banding stress and stress cone extend overlap joint to outer semiconducting layer on layer, and stress cone is successively wound with semi-conductive tape, copper outside
Net, insulating self-adhesive band, the both ends of the semi-conductive tape are overlapped to the water blocking layer of two end cables, and the copper mesh both ends are overlapped to two electricity
The metal screen layer of cable, the insulating self-adhesive band fully wrapped around copper mesh both ends in both ends, the outside of the insulating self-adhesive band, which is equipped with, to be connect
Headgear, the both ends of fitting sleeve are overlapped on the oversheath of two cables, are filled between insulating self-adhesive band inside fitting sleeve and are set colloid.
2. a kind of ultra-high voltage electric cable joint mounting structure according to claim 1, it is characterised in that: twined outside the copper pipe
It is provided around copper braid over braid, copper braid over braid elasticity fills the space between shielding case and copper pipe.
3. a kind of ultra-high voltage electric cable joint mounting structure according to claim 1 or 2, it is characterised in that: the shielding case
It is put together by two half shells divided along axis section.
4. a kind of ultra-high voltage electric cable joint mounting structure according to claim 1, it is characterised in that: the insulating self-adhesive band
6-10 layers of winding.
5. a kind of ultra-high voltage electric cable joint mounting structure according to claim 1 or 2 or 4, it is characterised in that: the insulation
PVC tape is additionally provided on the outside of self-adhesive tape.
6. a kind of ultra-high voltage electric cable joint mounting structure according to claim 1 or 2 or 4, it is characterised in that: the connector
Set both ends and oversheath lap-joint are wound with adhesive waterproof tape, are wound with PVC protective layer on the outside of adhesive waterproof tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821666409.7U CN208971115U (en) | 2018-10-15 | 2018-10-15 | A kind of ultra-high voltage electric cable joint mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821666409.7U CN208971115U (en) | 2018-10-15 | 2018-10-15 | A kind of ultra-high voltage electric cable joint mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208971115U true CN208971115U (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821666409.7U Active CN208971115U (en) | 2018-10-15 | 2018-10-15 | A kind of ultra-high voltage electric cable joint mounting structure |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600140A (en) * | 2020-06-23 | 2020-08-28 | 中车大连机车车辆有限公司 | Maintenance method and device for T-shaped connector of high-voltage cable |
-
2018
- 2018-10-15 CN CN201821666409.7U patent/CN208971115U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600140A (en) * | 2020-06-23 | 2020-08-28 | 中车大连机车车辆有限公司 | Maintenance method and device for T-shaped connector of high-voltage cable |
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