CN202183242U

CN202183242U - 2MW low temperature torsion flexible cable used in wind power generation

Info

Publication number: CN202183242U
Application number: CN2011202736717U
Authority: CN
Inventors: 王世民; 张涛; 张敏
Original assignee: Chongqing Pigeon Electric Wire and Cable Co Ltd
Current assignee: Chongqing Pigeon Electric Wire and Cable Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-04-04
Anticipated expiration: 2021-07-29

Abstract

The utility model discloses a power or signal transmission cable, especially relates to a 2MW low temperature torsion flexible cable used in wind power generation, comprising at least one soft copper conductor, a conductor isolating layer composed of a nylon tape lapped on the surface of the soft copper conductor or a polyester strap wrapped on the surface of the soft copper conductor longitudinally, an isolating layer made of ethylene propylene rubber and wrapped on the surface of the conductor isolating layer, a braided shielding layer arranged on the outside of the insulating layer and a sheath arranged on the outside of the braided shielding layer and formed by extruding chlorinated polyethylene rubber. By using the 2MW low temperature torsion flexible cable used in the wind power generation, the technical defect in the prior art is overcome that the cable used in the wind power generation are bad in weather resistance and flame resistance, a high flexibility can be kept at high and low temperatures, the inner stress of the cable when the cable twists along with a blower is buffered effectively, the normal running of the cable under a torsion state is guaranteed, and the requirement for 5000 torsion cycles at forty DEG C below zero of the cable can be satisfied.

Description

2MW used for wind power generation low temperature reverses flexible cable

Technical field

The utility model belongs to a kind of electric power or signal-transmitting cable, and particularly a kind of 2MW used for wind power generation low temperature reverses flexible cable.

Background technology

Along with the minimizing day by day of world energy sources growth of requirement and non-renewable resources such as coal, oil, wind power generation has become the focus of regenerative resource.The harsh environment for use of wind power generation is had higher requirement to its supporting cable.

Existing its weatherability of used for wind power generation cable, anti-flammability are uneven, and the whole cable structure is difficult to keep the height flexibilities at-40～50 ℃, and be normal because of frequent twisting generation structural destruction, can't guarantee that circuit normally moves.

The utility model content

The purpose of the utility model is through optimized Structure Design; And select suitable material; Provide a kind of 2MW used for wind power generation low temperature to reverse flexible cable, it not only has good weatherability, anti-flammability, ozone resistance, also should be through-40 ℃ of following 5000 tests of reversing the cycle.

The utility model is realized through following technical scheme:

2MW used for wind power generation low temperature reverses flexible cable; Comprise at least one soft copper conductor; The conductor isolation layer of forming by wrapped nylon tape or the vertical polyester belt that wraps in the soft copper conductive surface at the soft copper conductive surface, be coated on the insulating barrier processed by ethylene-propylene rubber on the conductor isolation layer surface, be located at the woven shield insulating barrier outside, be located at woven shield and extrude the sheath that forms by chlorinated polyethylene rubber outward.

Further, also comprise the braid shielded inner covering of being located between insulating barrier and the woven shield in addition, constituting by the non-hygroscopic webbing between woven shield and the sheath.

2MW used for wind power generation low temperature reverses flexible cable conductor and adopts the soft copper conductor; Strict control copper single line annealing temperature, time and twisted wire tension force when strand system soft copper conductor; And the nylon tape or the polyester belt that are used as conductor isolation layer are tightened; Improve the suppleness and the stability of conductor, avoided cable that the fracture of conductor single line takes place when reversing with blower fan; The ethylene-propylene rubber that insulating barrier adopts has excellent cryogenic property, electric property, heat aging performance; Not only can make insulating barrier obtain high-flexibility; High tear resistance also can make cable stable operation under the big situation of high capacity, caloric value, reduces the loss of electric energy transmitting; The inboard of woven shield and the outside are provided with the braiding inner covering that the non-hygroscopic webbing constitutes, avoided woven shield and sheath, insulation direct the contact, when cable reverses, played and cushioned preferably and lubrication; Particularly adopt chlorinated polyethylene rubber as sheath; Not only have excellent flame-retardant, corrosion resistance, weatherability and ozone resistance; And can under high low temperature, keep high flexibility; Effectively cushioned cable with the internal stress that blower fan reverses, guaranteed the normal operation of cable under twisting states, can satisfy cable-40 ℃ of following 5000 requirements of reversing the cycle.

Following mask body combines embodiment and accompanying drawing that the utility model is further described.

Description of drawings

Fig. 1 is the structural representation that the utility model 2MW used for wind power generation low temperature reverses first kind of embodiment of flexible cable.

Fig. 2 is the structural representation that the utility model 2MW used for wind power generation low temperature reverses second kind of embodiment of flexible cable.

1 is tight soft copper conductor among the figure; 2 is conductor isolation layer; 3 is insulating barrier; 4 is to fill to use the rubber bar; 5 are the shielding inner covering; 6 is woven shield; 7 is sheath.

Embodiment

Embodiment one

As shown in Figure 1; The utility model 2MW used for wind power generation low temperature reverses flexible cable; Comprise 1 soft copper conductor 1, coat the conductor isolation layer 2 on soft copper conductor 1 surface, the insulating barrier 3 on coating conductor separator 2 surfaces; Be located at the woven shield 6 outside the insulating barrier 3, be located at the sheath 7 outside the woven shield 6;

Wherein soft copper conductor 1 is to process through operations such as bunch, multiple strands with copper cash, adopts concentric regular strandedly, and bunch pitch≤25 times bunch diameter twists pitch≤16 again and times twists diameter again; Conductor isolation layer 2 is wrapped nylon tapes; Insulating barrier 3 is extruded by ethylene-propylene rubber and forms; Woven shield 6 is made up of the zinc-plated single round copper wire braiding of multiply line diameter≤0.2mm; Sheath 7 is extruded by chlorinated polyethylene rubber and obtains.

Woven shield 6 and insulating barrier 3, woven shield 6 and and sheath 7 between also be provided with braid shielded inner covering 5.

During making, in high speed bunching machine and the enterprising column conductor strand of cage winch system, tighten with nylon tape more earlier.On rubber extruding machine, extrude ethylene propylene rubber insulatedly then, note when extruding controlling the curing tube steam pressure, avoid occurring insulation defect, insulating surface applies talcum powder.Earlier at the wrapped non-hygroscopic webbing of insulating surface, on 24 or 32 ingot braiding machines, avoid occurring the copper cash broken end during woven shield before the woven shield.The vertical again bag of braid shielded laminar surface or wrapped one deck non-hygroscopic webbing (like nonwoven fabrics).On rubber extruding machine, extrude the chlorinated polyethylene rubber sheath then.

Embodiment two

As shown in Figure 2; The utility model 2MW used for wind power generation low temperature reverses flexible cable; Comprise 5 soft copper conductors 1, coat the conductor isolation layer 2 on soft copper conductor 1 surface, the insulating barrier 3 on coating conductor separator 2 surfaces; Be located at the woven shield 6 outside the insulating barrier 3, be located at the sheath 7 outside the woven shield 6;

Wherein soft copper conductor 1 is to process through bunch with copper cash, bunch pitch≤25 times bunch diameter; Conductor isolation layer 2 is vertical bag polyester belts; Insulating barrier 3 is extruded by ethylene-propylene rubber and forms; Woven shield 6 is made up of the zinc-plated single round copper wire braiding of multiply line diameter≤0.2mm; Sheath 7 is extruded by chlorinated polyethylene rubber and obtains.

Also be provided with braid shielded inner covering 5 between woven shield 6 and insulating barrier 3, woven shield 6 and the sheath 7.

Between insulating barrier 3 and the insulating barrier 3, be provided with between insulating barrier 3 and the braid shielded inner covering 5 and fill with rubber bar 4.

During making, in high speed bunching machine and the enterprising column conductor strand of cage winch system, tighten with nylon tape more earlier.On rubber extruding machine, extrude ethylene propylene rubber insulatedly then, note when extruding controlling the curing tube steam pressure, avoid occurring insulation defect, insulating surface applies talcum powder.The insulated wire cores that makes stranding on cabler, laying up pitch≤16 times stranding diameter, the cable core gap is filled closely knit with the rubber bar, wrapped closely with the non-hygroscopic webbing again.Woven shield time control avoids occurring the copper cash broken end on 24 or 32 ingot braiding machines.The vertical again bag of braid shielded laminar surface or wrapped one deck non-hygroscopic webbing (like nonwoven fabrics).On rubber extruding machine, extrude the chlorinated polyethylene rubber sheath then.

For a person skilled in the art; Under the prerequisite that does not break away from the utility model structure; Can also make some distortion and improvement, these also should be regarded as the protection range of the utility model, and these can not influence effect and practical applicability that the utility model is implemented.

Claims

1.2MW used for wind power generation low temperature reverses flexible cable; It is characterized in that: comprise at least one soft copper conductor; The conductor isolation layer of forming by wrapped nylon tape or the vertical polyester belt that wraps in the soft copper conductive surface at the soft copper conductive surface, be coated on the insulating barrier processed by ethylene-propylene rubber on the conductor isolation layer surface, be located at the woven shield insulating barrier outside, be located at woven shield and extrude the sheath that forms by chlorinated polyethylene rubber outward.

2. 2MW used for wind power generation low temperature reverses flexible cable according to claim 1, it is characterized in that: also comprise the braid shielded inner covering of being located between insulating barrier and the woven shield in addition, being made up of the non-hygroscopic webbing between woven shield and the sheath.