CN204884673U - High voltage cable - Google Patents
High voltage cable Download PDFInfo
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- CN204884673U CN204884673U CN201520600271.0U CN201520600271U CN204884673U CN 204884673 U CN204884673 U CN 204884673U CN 201520600271 U CN201520600271 U CN 201520600271U CN 204884673 U CN204884673 U CN 204884673U
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- aluminium
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- tension cable
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- conductor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model relates to the technical field of cables, a high voltage cable is disclosed, its cross -section includes conductor, conductor shield, insulating layer, insulation screen, semiconduction block water buffer layer, metal covering, insulating oversheath from inside to outside in proper order, and the metal covering be the aluminium cover, and the inner wall of aluminium cover is smooth, and the outer wall of aluminium cover is equipped with a plurality of radiating grooves that distribute along the axial, is equipped with the pitch layer between insulating oversheath overlaps with aluminium, and the outside of insulation oversheath is equipped with semiconductor conducting layer, insulating layer, insulating oversheath are made by the crosslinked polyethylene material. The utility model discloses the beneficial effect that heat dispersion is good, the performance is more stable has.
Description
Technical field
The utility model relates to field of cable technology, particularly relates to a kind of high-tension cable.
Background technology
High-tension cable is the one of power cable, refers to for transmitting 10KV-35KV(1KV=1000V) between power cable, be applied to the major trunk roads of electric power transfer more.Conventional metals jacket structure high voltage power cable metallic sheath adopt corrugated aluminum sheath structure, with embossing calender, flat aluminum pipe is rolled into spiral or ring grain in production process, this structure is because design feature, between metallic sheath and endothecium structure, gap is larger first, air thermal resistivity is large, cause cable sheath overall thermal resistance large, in cable running, heat radiation is slow, affects cable current capacity.Second because metallic sheath is through embossing, outer surface is ripple struction, and whole cable external diameter becomes large, and when later process produces non metallic sheath, consumption of materials is large, and manufacturing cost is high.
Utility model content
The problems referred to above that the utility model exists to solve high-tension cable of the prior art, provide a kind of perfect heat-dissipating, high-tension cable that performance is more stable.
To achieve these goals, the utility model adopts following technical scheme:
A kind of high-tension cable, its cross section comprises conductor, conductor shield, insulating barrier, insulation screen, semiconductive water-blocking buffer layer, metallic sheath, insulating outer protective cover from inside to outside successively, described metallic sheath is aluminium cover, the inner wall smooth of described aluminium cover, the outer wall of described aluminium cover is provided with some radiating grooves distributed vertically, be provided with bitumen layer between described insulating outer protective cover and aluminium overlap, the outside of described insulating outer protective cover is provided with semiconductor conducting layer.Corrugated aluminum sheath is improved to the aluminium cover of inner wall smooth, reduces the air gap at aluminium cover inwall place on the one hand, reduces thermal resistance, is convenient to conductor heat radiation, and aluminium cover external diameter reduces on the other hand, thus reduces the diameter of insulating outer protective cover, and minimizing material, reduces costs; Aluminium cover arranged outside radiating groove, strengthens cooling surface area, reduces aluminium, reduce costs, and also makes bitumen layer and aluminium overlap outer wall simultaneously and is connected more reliable, difficult drop-off.
As preferably, described insulating barrier, insulating outer protective cover are made by cross-linking polyethylene materials.The high energy electron line utilizing electron accelerator to produce carries out cross-linking radiation to the crosslinked polyethylene in cable, make between polyethylene molecule covalent bond form a netted three-dimensional structure, and define the three-dimensional lattice being less than hydrone, improve rapidly the performance of polyvinyl resin, improve series of physical, the chemical properties such as thermal deformation, resistance to wear, chemical proofing, stress crack resistant, thus overall heat-resisting, wear-resisting, the fire resistance improving cable, improve block-water performance simultaneously; Crosslinked polyethylene is not easily burned, even if the cigarette produced during burning is little, uses safer.
As preferably, the outside of described insulating barrier is provided with some long slot bores distributed vertically, and the two sides of described long slot bore are parallel to each other and there is angle with the radial direction of insulating barrier, are filled with pitch in described long slot bore.Thickness of insulating layer is comparatively large, and phenomenon of expanding with heat and contract with cold is obvious, and long slot bore can effectively slow down expanding with heat and contract with cold of insulating barrier, and in long slot bore, filled bitumen is for the ease of the air in long slot bore is drained.
As preferably, between described conductor and conductor shield, be also provided with semiconductive nylon tape.Semiconductive nylon tape plays the effect of electric field shielding, and semiconductive nylon tape can be good at being connected with conductive shielding layer simultaneously.
As preferably, the cross section semicircular in shape of described radiating groove.Semicircle radiating groove area of dissipation is large.
Therefore, the utility model has perfect heat-dissipating, beneficial effect that performance is more stable.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is metallic sheath and internal structure schematic diagram thereof.
In figure: conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water-blocking buffer layer 5, metallic sheath 6, insulating outer protective cover 7, radiating groove 8, semiconductive nylon tape 9, semiconductor conducting layer 10, pitch 11, bitumen layer 12, long slot bore 30.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of high-tension cable as shown in Figure 1, its cross section comprises conductor 1 from inside to outside successively, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water-blocking buffer layer 5, metallic sheath 6, insulating outer protective cover 7, semiconductive nylon tape 9 is also provided with between conductor 1 and conductor shield 2, metallic sheath is aluminium cover, the inner wall smooth of aluminium cover, as shown in Figure 2, the outer wall of aluminium cover is provided with some radiating grooves 8 distributed vertically, the cross section semicircular in shape of radiating groove, bitumen layer 12 is provided with between insulating outer protective cover and aluminium overlap, the outside of insulating outer protective cover is provided with semiconductor conducting layer 10, insulating barrier 3 in the present embodiment, oversheath 7 is made by cross-linking polyethylene materials.Corrugated aluminum sheath is improved to the aluminium cover of inner wall smooth, reduces the air gap at aluminium cover inwall place on the one hand, reduces thermal resistance, is convenient to conductor heat radiation, and aluminium cover external diameter reduces on the other hand, thus reduces the diameter of insulating outer protective cover, and minimizing material, reduces costs; Aluminium cover arranged outside radiating groove, strengthens cooling surface area, reduces aluminium, reduce costs, and also makes bitumen layer and aluminium overlap outer wall simultaneously and is connected more reliable, difficult drop-off; The high energy electron line utilizing electron accelerator to produce carries out cross-linking radiation to the crosslinked polyethylene in cable, make between polyethylene molecule covalent bond form a netted three-dimensional structure, and define the three-dimensional lattice being less than hydrone, improve rapidly the performance of polyvinyl resin, improve series of physical, the chemical properties such as thermal deformation, resistance to wear, chemical proofing, stress crack resistant, thus overall heat-resisting, wear-resisting, the fire resistance improving cable, improve block-water performance simultaneously; Crosslinked polyethylene is not easily burned, even if the cigarette produced during burning is little, uses safer.
As depicted in figs. 1 and 2, the outside of insulating barrier 3 is provided with some long slot bores 30 distributed vertically, and the two sides of long slot bore are parallel to each other and there is angle with the radial direction of insulating barrier, are filled with pitch 11 in long slot bore.Thickness of insulating layer is comparatively large, and phenomenon of expanding with heat and contract with cold is obvious, and long slot bore can effectively slow down expanding with heat and contract with cold of insulating barrier, and in long slot bore, filled bitumen is for the ease of the air in long slot bore is drained.
Claims (5)
1. a high-tension cable, its cross section comprises conductor, conductor shield, insulating barrier, insulation screen, semiconductive water-blocking buffer layer, metallic sheath, insulating outer protective cover from inside to outside successively, it is characterized in that, described metallic sheath is aluminium cover, the inner wall smooth of described aluminium cover, the outer wall of described aluminium cover is provided with some radiating grooves distributed vertically, and be provided with bitumen layer between described insulating outer protective cover and aluminium overlap, the outside of described insulating outer protective cover is provided with semiconductor conducting layer.
2. a kind of high-tension cable according to claim 1, is characterized in that, described insulating barrier, insulating outer protective cover are made by cross-linking polyethylene materials.
3. a kind of high-tension cable according to claim 1, it is characterized in that, the outside of described insulating barrier is provided with some long slot bores distributed vertically, and the two sides of described long slot bore are parallel to each other and there is angle with the radial direction of insulating barrier, are filled with pitch in described long slot bore.
4. a kind of high-tension cable according to claim 1 or 2 or 3, is characterized in that, be also provided with semiconductive nylon tape between described conductor and conductor shield.
5. a kind of high-tension cable according to claim 1, is characterized in that, the cross section semicircular in shape of described radiating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600271.0U CN204884673U (en) | 2015-08-11 | 2015-08-11 | High voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600271.0U CN204884673U (en) | 2015-08-11 | 2015-08-11 | High voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884673U true CN204884673U (en) | 2015-12-16 |
Family
ID=54829024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520600271.0U Active CN204884673U (en) | 2015-08-11 | 2015-08-11 | High voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204884673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679424A (en) * | 2016-03-31 | 2016-06-15 | 宁国市明福线缆有限公司 | High-voltage power cable |
-
2015
- 2015-08-11 CN CN201520600271.0U patent/CN204884673U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679424A (en) * | 2016-03-31 | 2016-06-15 | 宁国市明福线缆有限公司 | High-voltage power cable |
| CN105679424B (en) * | 2016-03-31 | 2017-04-26 | 安徽明福电缆有限公司 | High-voltage power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |