CN201477976U

CN201477976U - Low-temperature wind-energy power cable

Info

Publication number: CN201477976U
Application number: CN2009202313895U
Authority: CN
Inventors: 芮顺强
Original assignee: JIANGSU JIULI CABLE PRODUCE CO Ltd
Current assignee: JIANGSU JIULI CABLE PRODUCE CO Ltd
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2010-05-19
Anticipated expiration: 2019-08-27

Abstract

The utility model discloses a low-temperature wind-energy power cable, which comprises cable cores, packing, a lapping layer and a sheath layer. Each cable core is formed by overlapping a lapping separation tape on the outer surface of a stranded conductor and then extruding a continuous vulcanized insulation core layer outside the separation tape, the cable cores and the packing extruded by rubber strips among the cable cores form a cable which is wound with the lapping layer outside, and the sheath layer is extruded outside the lapping layer. The anti-twisting stranded conductor is formed by back-twisting and stranding in the same layer and the same direction and has soft reciprocating twisting force, and the cable is not easy to deform during a mounting moving or non-moving occasion process, thereby avoiding damaging the conductor due to reciprocating movement of a traditional cable, reducing damage to the conducting cable cores, and increasing twisting resistance of the cable during operation.

Description

The low temperature wind energy power cable

Technical field

The utility model relates to a kind of cable, specifically is a kind of low temperature wind energy power cable.

Background technology

The technical specification of low temperature wind energy power cable has formally been implemented at country electric wire quality supervision and test center in May, 2009, this standard is described in detail on the material of physical dimension, use and performance, electric pressure, environment for use temperature, use occasion, test method.The low temperature wind energy power cable is very different on product quality before this, and a large amount of defective or abominable products flood market, and bring economic loss to the user, the normal operation of serious threat electrical control equipment, electric power system.

Because country constantly increases the demand of regenerative resource, therefore as the low temperature wind energy power cable of wind power plant auxiliary products, becoming has the cable of huge market potential new varieties, and exploitation is also invested market.The conductor of low temperature wind energy power cable adopts the stranded mode of multiply layering, the pitch range of stranded conductor: 21～25 times of strands, internal layer: 17～20 times, skin: 11～14 times, stranding is got different stranding lay ratios by different code names, mobile occasion: lay ratio is not more than 14 times of laying up diameter; Non-moving occasion: lay ratio is not more than 18 times of laying up diameter.The stranded pliability of conductor is good, and torsional resistance is good.Therefore, be widely used in the connection of wind power generation machine rotor or be used for connection of the inside and outside non-moving power supply of tower etc.The low temperature wind energy power cable has solved the hidden danger of equipment safety operation, has upgraded environmental benefit, has brought economic benefit.The advantage of existing low temperature wind energy power cable is: warp resistance.Shortcoming is, long-term reciprocal positive anti-twist is not very long through stranded conductor and conductor wire core life-span on wind power plant, and the cable easy deformation causes easily being twisted off.And the reason of these defectives is because stranded conductor pitch is sparse, stranded conductor is not very tight, and the pliability of conductor is general, the pre-torsion when not having positive and negative back twist.

The utility model content

Technical problem to be solved in the utility model provides a kind of safe and reliable, the low temperature wind energy power cable of low temperature twist-resistant type.

A kind of low temperature wind energy power cable described in the utility model, it comprises core, filling, lapping layer and restrictive coating, described core is in the overlapping wrapped isolation strip of stranded conductor outer surface, extrudes continuous vulcanization insulated wire sandwich layer outside the isolation strip again and forms; The outside lapping layer that twines of the filling stranding that the rubber bar extrudes between several wire core and core, lapping layer extrudes restrictive coating outward.

The same layer that above-mentioned stranded conductor preferably adopts layering is lay configuration in the same way.

As further improvement of the utility model, the stranding rotation direction of stranded conductor is a dextrad, is used for mobile occasion, and laying up pitch is 8-11 a times of laying up diameter.Be used for non-moving occasion, laying up pitch is 8-16 a times of laying up diameter.

The manufacture method of low temperature wind energy power cable: at first conductor is restrainted strand in the same way with layer, vertical then bag separator and insulating barrier continuous vulcanization are carried out simultaneously, secondly stranding is got different stranding lay ratios by different code names, insulated wire cores is stranded clockwise, wherein packing and other auxiliary material that increase rubber bar extrudes between core are wrapped, extrude the restrictive coating continuous vulcanization then.In the utility model, conductor adopts with layer stranded mode in the same way, and the pitch range of strand conductor is dwindled, and pitch range is 8～10 times, and the stranded pliability of conductor is good, warp resistance; The stranding lay ratio is controlled at 8～16 times that are not more than laying up diameter by different code names, the warp resistance stranded conductor is to adopt back twist, layer twists in the same way to make and forms together, has soft reciprocal distortion power, in mobile or non-moving occasion process were installed, cable was not yielding, had avoided traditional cable owing to move back and forth the damage that conductor is caused, minimizing has improved cable anti-property turned round in running to the injury effect of conductor wire core.Cable of the present utility model should stand positive three commentaries on classics, returns to initial point position then, changes three in the other direction again and transfers to once, and number of times is no less than 7300 times.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

As shown in the figure, conductor structure is: adopt soft copper conductor 1, stranded conductor 1 adopts the same layer of layering stranded in the same way, like this stranded can make stranded conductor have flexibility and warp resistance preferably, and overlapping wrapped isolation strip 2, stranded conductor 1 surface extrudes continuous vulcanization insulating barrier 3, the filling 4 that extrudes by rubber bar between 4 cores and core stranding together then, the stranding direction is a dextrad, laying up pitch: the DN-F type is used for mobile occasion, and pitch is not more than 11 times of laying up diameter; DN-R, DN-RA1 type are used for non-moving occasion, and pitch is not more than 16 times of laying up diameter; At the lapping layer 5 that becomes the overlapping wrapped non-wet materials in cable core surface to make, non-wet materials can prevent that cable core makes moist under unexpected condition, more can make the wrapped consolidation of cable.The lapping layer 5 outer restrictive coatings 6 that extrude.

The utility model provides a kind of thinking and implementation method of low temperature wind energy power cable; concrete application approach is a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. low temperature wind energy power cable, it is characterized in that comprising core, filling (4), lapping layer (5) and restrictive coating (6), described core is in stranded conductor (1) the overlapping wrapped isolation strip of outer surface (2), and isolation strip (2) outer continuous vulcanization insulating barrier (3) that extrudes is again formed; The outside lapping layer (5) that twines of the filling that the rubber bar extrudes between several wire core and core (4) stranding, the outer restrictive coating (6) that extrudes of lapping layer (5).

2. low temperature wind energy power cable according to claim 1 is characterized in that same layer that stranded conductor (1) adopts layering lay configuration in the same way.

3. low temperature wind energy power cable according to claim 1 and 2, the stranding rotation direction that it is characterized in that stranded conductor (1) is a dextrad, laying up pitch is 8-10 a times of laying up diameter.

4. low temperature wind energy power cable according to claim 1 and 2, the stranding rotation direction that it is characterized in that stranded conductor (1) is a dextrad, laying up pitch is 8-16 a times of laying up diameter.