CN201160016Y - Cross-linked polyethylene insulated puckering metal sleeve power cable with rated voltage of 500kV - Google Patents
Cross-linked polyethylene insulated puckering metal sleeve power cable with rated voltage of 500kV Download PDFInfo
- Publication number
- CN201160016Y CN201160016Y CNU2008200736231U CN200820073623U CN201160016Y CN 201160016 Y CN201160016 Y CN 201160016Y CN U2008200736231 U CNU2008200736231 U CN U2008200736231U CN 200820073623 U CN200820073623 U CN 200820073623U CN 201160016 Y CN201160016 Y CN 201160016Y
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- metallic sheath
- cable
- wrinkle
- rated voltage
- power cable
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Abstract
The utility model provides a cross-linked polyethylene insulated corrugated metallic sheath power cable with 500 kV rated voltage. The cross-section structure of the cable comprises a non-metallic sheath, a corrugated metallic sheath, a semi-conductive water blocking buffer tape, an insulation shielding layer, an insulating layer, a conductor shielding layer, a semi-conductive nylon tape and a conductor in sequence and from outside to inside. The cable has the advantages that the high voltage cable adopting the structure not only can enhance the mechanical strength of the metallic sheaths, improve the corrosion resistance of the metallic sheaths, but also can improve the capacity of the metallic sheaths to bear the short-circuit current, and also ensures the security during the short-circuit process of the cable; and the cable with the structure is suitable for the large capacity transmission line for the large-scale power generation station.
Description
Technical field
The utility model relates to a kind of cable, the crosslinked polyetylene insulated wrinkle metallic sheath of particularly a kind of rated voltage 500kV power cable.
Background technology
Along with national economy grows continuously and fast and the improving constantly of people's living standard, increasing to the demand of electric power.Electric power energy under-supply become that the restriction Chinese national economy continues, one of the key factor of high speed development.Therefore develop high voltage power transmission, the electric pressure that improves transmission line is an imperative thing.Traditional ultra-high-tension power transmission line is employed to be oil-filled power cable, and this cable is progressively eliminated now, and replaced by power cable with cross-linked polyethylene insulation gradually owing to be subjected to laying the restriction of drop and the influence that the line upkeep expense is crossed high factor.And the present corrugated aluminum sheath high voltage power cable of promoting the use of, because the material of metallic sheath is an aluminium, so the cable of this structure also is subjected to certain limitation at the capacity of short circuit current.
Summary of the invention
The purpose of this utility model is that 500kV high-tension cable ground structure improves to above two kinds of rated voltages fundamentally, adopt the high-tension cable of this structure not only can increase the mechanical strength of metallic sheath, improve the anti-corrosion capability of metallic sheath, but also can improve the capacity of short circuit current that metallic sheath carries, guaranteed the safety problem of cable when being short-circuited.
For achieving the above object, the technical solution adopted in the utility model provides the crosslinked polyetylene insulated wrinkle metallic sheath of a kind of rated voltage 500kV power cable, and wherein: the cross section structure of this cable includes non metallic sheath, corrugated metallic sheath, semiconductive block water buffer strip, insulation screen, insulating barrier, conductor shield, semiconductive nylon tape, conductor from outside to inside successively.
The cross sectional shape of described conductor is for pressing circle, five milliken conductors or seven milliken conductors.
Wrinkle copper sheathing or stainless steel sleeve that described wrinkle metallic sheath radially wraps up for the buffer strip that blocks water with respect to semiconductive.
Described non metallic sheath is made for insulation level ground polyvinyl chloride, medium density polyethylene or high density polyethylene (HDPE).
Effect of the present utility model is the mechanical strength that the high-tension cable of this structure of employing not only can increase metallic sheath, improve the anti-corrosion capability of metallic sheath, but also can improve the capacity of short circuit current that metallic sheath carries, guarantee the safety problem of cable when being short-circuited, be applicable to large capacity transmission circuit uses such as power large-scale electric generating station.
Description of drawings
Fig. 1 is the crosslinked polyetylene insulated wrinkle metallic sheath of a rated voltage 500kV of the present utility model power cable cross section structure schematic diagram;
Among the figure:
1, conductor 2, semiconductive nylon tape 3, conductor screen
4, insulating barrier 5, insulation shielding 6, the semiconductive buffer strip that blocks water
7, wrinkle metallic sheath 8, non metallic sheath
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the structure of the crosslinked polyetylene insulated wrinkle metallic sheath of rated voltage 500kV of the present utility model power cable.
The crosslinked polyetylene insulated wrinkle metallic sheath of the utility model rated voltage 500kV power cable, the cross section structure of this cable comprise successively from outside to inside non metallic sheath 8 with and the conductive coating, wrinkle metallic sheath 7 on surface with and pitch corrosion-inhibiting coating, the semiconductive on surface block water buffer strip 6, insulation screen 5, insulating barrier 4, conductor shield 3, semiconductive nylon tape 2, conductor 1.The cross sectional shape of described conductor 1 is for pressing circle, five milliken conductors or seven milliken conductors, wrinkle copper sheathing or the stainless steel sleeve of described wrinkle metallic sheath 7 for radially wrapping up for the buffer strip 6 that blocks water with respect to semiconductive.Described non metallic sheath 8 adopts polyvinyl chloride, medium density polyethylene or the high density polyethylene (HDPE) of insulation level to make.
The crosslinked polyetylene insulated wrinkle metallic sheath of rated voltage 500kV of the present utility model power cable structure is achieved in that
As shown in Figure 1, the crosslinked polyetylene insulated wrinkle copper sheathing of rated voltage 500kV pe sheath power cable, model is YJTW03-290/500 1 * 1200mm
2, its cross section structure is from inside to outside as follows successively:
Cross sectional shape is to press circular five milliken conductors 1, semiconductive nylon tape 2, conductor shield 3, insulating barrier 4, insulation screen 5, semiconductive block water buffer strip 6, wrinkle copper sheathing 7, pe sheath 8.
As shown in Figure 1, the crosslinked polyetylene insulated wrinkle stainless steel sleeve of rated voltage 500kV pvc sheath power cable, model is YJGW02-290/500 1 * 2500mm
2, its cross section structure is from inside to outside as follows successively:
Cross sectional shape is to press circular seven milliken conductors 1, semiconductive nylon tape 2, conductor shield 3, insulating barrier 4, insulation screen 5, semiconductive block water buffer strip 6, wrinkle stainless steel sleeve 7, pvc sheath 8 and the metal screen layer between semiconductive water-blocking buffer layer 6 and wrinkle stainless steel sleeve 7.
Claims (4)
1, the crosslinked polyetylene insulated wrinkle metallic sheath of a kind of rated voltage 500kV power cable is characterized in that: the cross section structure of this cable includes non metallic sheath (8), wrinkle metallic sheath (7), semiconductive block water buffer strip (6), insulation screen (5), insulating barrier (4), conductor shield (3), semiconductive nylon tape (2), conductor (1) from outside to inside successively.
2, according to the crosslinked polyetylene insulated wrinkle metallic sheath of the described rated voltage 500kV of claim 1 power cable, it is characterized in that: the cross sectional shape of described conductor (1) is for pressing circle, five milliken conductors or seven milliken conductors.
3, according to the crosslinked polyetylene insulated wrinkle metallic sheath of the described rated voltage 500kV of claim 1 power cable, it is characterized in that: wrinkle copper sheathing or stainless steel sleeve that described wrinkle metallic sheath (7) radially wraps up for the buffer strip (6) that blocks water with respect to semiconductive.
4, according to the crosslinked polyetylene insulated wrinkle metallic sheath of the described rated voltage 500kV of claim 1 power cable, it is characterized in that: described non metallic sheath (8) is made for polyvinyl chloride, medium density polyethylene or the high density polyethylene (HDPE) of insulation level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200736231U CN201160016Y (en) | 2008-01-08 | 2008-01-08 | Cross-linked polyethylene insulated puckering metal sleeve power cable with rated voltage of 500kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200736231U CN201160016Y (en) | 2008-01-08 | 2008-01-08 | Cross-linked polyethylene insulated puckering metal sleeve power cable with rated voltage of 500kV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201160016Y true CN201160016Y (en) | 2008-12-03 |
Family
ID=40110601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200736231U Expired - Fee Related CN201160016Y (en) | 2008-01-08 | 2008-01-08 | Cross-linked polyethylene insulated puckering metal sleeve power cable with rated voltage of 500kV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201160016Y (en) |
-
2008
- 2008-01-08 CN CNU2008200736231U patent/CN201160016Y/en not_active Expired - Fee Related
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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: 20081203 Termination date: 20130108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |