CN218826246U

CN218826246U - Distortion-resistant halogen-free low-smoke flame-retardant flexible cable for wind power generation

Info

Publication number: CN218826246U
Application number: CN202223075698.2U
Authority: CN
Inventors: 孙腾; 蒋辉; 程江; 秦建伟; 邵云锋; 宗俊; 薛鑫; 潘碧霞; 丁兆彦
Original assignee: Jiangsu Zhongmei Cable Co Ltd
Current assignee: Jiangsu Zhongmei Cable Co Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-07
Anticipated expiration: 2032-11-21

Abstract

The utility model provides a warp-resistant does not have steamed low fire-retardant flexible cable of cigarette for wind power generation, including many conductors, every conductor all sets up the insulating layer outward and constitutes the sinle silk, constitutes the cable core after a plurality of sinle silks are stranded, and space department in the middle of the cable core is equipped with the stiffening element, and the cable core skin is equipped with high fire-retardant no halogen tape layer, and high fire-retardant no halogen tape layer sets up the polyester fiber weaving layer outward, is equipped with the restrictive coating outward of polyester fiber weaving layer, and the stiffening element is equipped with the stiffening element sheath outward, and the material of stiffening element sheath is EVA rubber. The utility model discloses a flexible cable for distortion-resistant halogen-free low-smoke flame-retardant wind power generation adopts new cable structure, namely the cable core is externally provided with a high flame-retardant halogen-free belt layer and a sparsely-woven polyester fiber weaving layer, which can prevent flame from entering the interior of the cable core and prevent the cable from twisting and bulging in the twisting use process; the cable is filled with the low-smoke halogen-free flame-retardant EVA rubber sheath, so that the overall low-smoke halogen-free flame-retardant performance of the cable is improved.

Description

Distortion-resistant halogen-free low-smoke flame-retardant flexible cable for wind power generation

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a flexible cable for warp-resistant no halogen low smoke flame retardant wind power generation.

Background

The torsion-resistant flexible cable for wind power generation is frequently twisted in an engine room for a long time, and the cable needs to meet the torsion resistance; due to the special use environment requirements of wind power generation, the torsion-resistant flexible cable for wind power generation has the characteristics of flame retardance, cold resistance, oil resistance, heat resistance, artificial weather aging resistance and the like besides excellent mechanical performance and electrical performance. In order to meet special use environments, the current torsion-resistant flexible cable for wind power generation generally adopts sheathing materials of chlorine-containing polymers and halogen-containing flame retardants, such as Chlorinated Polyethylene (CPE) and chlorosulfonated polyethylene rubber (CSP).

If a fire disaster occurs, the sheath material is pyrolyzed and combusted, and a large amount of dense smoke and toxic, corrosive and irritant HCl gas are released, so that fire fighters are seriously hindered from fighting fire, the rescue efficiency is influenced, and property damage is caused.

In the aspect of the structure, in order to prevent that insulation and sheath from gluing even, the cable core wraps ordinary non-woven fabrics outward behind the insulating core stranding, and turn round, swell the phenomenon can appear beating in the cable in the long-term use, and this type of non-woven fabrics does not have any fire behaviour, in the conflagration, burns inside insulating core very easily, and the aggravation produces more flue gases, is unfavorable for on-the-spot rescue.

Disclosure of Invention

Not enough to exist among the prior art, the utility model provides a warp-resistant does not have steamed low fire-retardant flexible cable for wind power generation of cigarette, cable core set up high fire-retardant nothing halogen-free belt layer and polyester fiber weaving layer outward, can prevent that flame from getting into inside the cable core and preventing to twist reverse the cable in the use and appear beating to turn round, bulge the problem.

The utility model adopts the technical proposal that:

a warp-resistant halogen-free low-smoke flame-retardant flexible cable for wind power generation, wherein: the cable comprises a plurality of conductors, each conductor is externally provided with an insulating layer to form a cable core, the plurality of cable cores are twisted to form a cable core, a reinforcing element is arranged in a gap in the middle of the cable core, a high-flame-retardant halogen-free belt layer is arranged on the outer layer of the cable core, a polyester fiber weaving layer is arranged outside the high-flame-retardant halogen-free belt layer, and a sheath layer is arranged outside the polyester fiber weaving layer.

Preferably, the flexible cable for wind power generation is free of halogen and low smoke and is resistant to distortion, wherein: and a reinforcing element protective layer is arranged outside the reinforcing element, and the reinforcing element protective layer is made of EVA rubber.

Preferably, the flexible cable for wind power generation is free of halogen and low smoke and is resistant to distortion, wherein: the material of the reinforcing element is terylene.

Preferably, the flexible cable for twisting-resistant halogen-free low-smoke flame-retardant wind power generation, wherein: the high-flame-retardant halogen-free belt layer is formed by winding a high-flame-retardant halogen-free belt, and the overlapping rate of the high-flame-retardant halogen-free belt is 30-50%.

Preferably, the flexible cable for wind power generation is free of halogen and low smoke and is resistant to distortion, wherein: the sheath layer is made of EVA rubber.

The utility model has the advantages that:

the utility model discloses a flexible cable for distortion-resistant, halogen-free, low-smoke, flame-retardant wind power generation adopts a new cable structure, namely, a high-flame-retardant, halogen-free tape layer and a sparsely-woven polyester fiber woven layer are arranged outside a cable core, so that flame can be prevented from entering the cable core and the problems of twisting and bulging of the cable in the twisting use process can be prevented; the cable is filled with the low-smoke halogen-free flame-retardant EVA rubber sheath, so that the overall low-smoke halogen-free flame-retardant performance of the cable is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific drawings and examples.

Examples

As shown in fig. 1: the embodiment provides a flexible cable for wind power generation of resistant distortion no halogen low smoke flame retardant, wherein: including many conductors 3, many all set up insulating layer 4 outward and constitute the sinle silk, constitute the cable core after a plurality of sinle silks are twisted, the space department in the middle of the cable core is equipped with reinforcing element 1, the cable core skin is equipped with high fire-retardant no halogen tape layer 5, high fire-retardant no halogen tape layer 5 is equipped with polyester fiber weaving layer 6 outward, polyester fiber weaving layer 6 is equipped with restrictive coating 7 outward.

Wherein: the reinforcing element 1 is sleeved with a reinforcing element protective layer 2, and the reinforcing element protective layer 2 is made of EVA rubber.

Wherein: the material of the reinforcing element 1 is dacron.

Wherein: the high-flame-retardant halogen-free belt layer 5 is formed by winding a high-flame-retardant halogen-free belt, and the overlapping coverage rate of the high-flame-retardant halogen-free belt is 30-50%.

Wherein: the sheath 7 is made of EVA rubber.

The utility model discloses the theory of operation:

the EVA resin is adopted as a base material of the cable sheath, various grades of EVA rubber are selected and blended, and meanwhile, inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide are matched, and on the basis, special solid acid catalysts, smoke suppressants and other auxiliaries are introduced, so that the performances of low smoke, zero halogen and flame retardance are realized, and the advantages of good mechanical properties, cold resistance, oil resistance, heat resistance, artificial weather aging resistance and the like are also continued; a layer of high-flame-retardant halogen-free tape is lapped outside the cable core in an overlapping manner, the overlapping coverage rate is 30% -50%, the high-flame-retardant halogen-free tape has strong flame-retardant performance, the sheath layer and the cable core can be isolated in the combustion process, flame is prevented from entering the cable core, and the possibility of generating smoke due to the combustion of the insulated wire core is reduced; a36-braiding machine is adopted to sparsely braid a high-strength polyester fiber reinforced layer outside the cable core wrapped with the high-flame-retardant halogen-free tape, so that the slippage of the insulated wire core and the stress range of the sheath in the twisting process are reduced, and the problems of twisting and bulging of the cable in the twisting use process are prevented.

The utility model discloses production process: the conductor 3 adopts a 5 th annealing bare copper soft conductor, and is stranded by a wire harness and a regular structure with the same direction of compound stranding; the insulating layer 4 is extruded by halogen-free ethylene propylene diene monomer insulating mixture and is continuously vulcanized by steam crosslinking.

The cabling adopts right-hand stranding, the tension of each insulating layer is ensured to be uniform during stranding, and gaps among the cable cores are filled with filler formed by high-strength polyester ropes and EVA rubber packages, so that the cable core is ensured to be round.

And a high-flame-retardant halogen-free belt layer 5 is wrapped outside the stranded cable core in the left direction, and the overlapping coverage rate is 30-50%.

A36-braiding machine is adopted to sparsely braid a polyester fiber braid layer 6 outside the high-flame-retardant halogen-free tape layer 5, the braiding angle is controlled to be 45% -50%, and the cleanness and no oil contamination of the wire surface are guaranteed during braiding.

The sheath 7 is made of low-smoke halogen-free flame-retardant EVA rubber sheath material, the polyester fiber and the sheath are combined with each other through extrusion pressure, the sheath is tightly extruded on the cable core, the surface of the sheath is smooth and round, and pores and impurities cannot be seen on the cross section.

The utility model discloses a flexible cable for distortion-resistant halogen-free low-smoke flame-retardant wind power generation adopts new cable structure, namely the cable core is externally provided with a high flame-retardant halogen-free belt layer and a sparsely-woven polyester fiber weaving layer, which can prevent flame from entering the interior of the cable core and prevent the cable from twisting and bulging in the twisting use process; the cable is filled with the low-smoke halogen-free flame-retardant EVA rubber sheath, so that the overall low-smoke halogen-free flame-retardant performance of the cable is improved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a flexible cable for warp-resistant no halogen low smoke flame retardant wind power generation which characterized in that: the cable comprises a plurality of conductors (3), wherein an insulating layer (4) is arranged outside each conductor (3) to form a wire core, the plurality of wire cores are twisted to form a cable core, a reinforcing element (1) is arranged at a gap in the middle of the cable core, a high-flame-retardant halogen-free tape layer (5) is arranged on the outer layer of the cable core, a polyester fiber woven layer (6) is arranged outside the high-flame-retardant halogen-free tape layer (5), and a sheath layer (7) is arranged outside the polyester fiber woven layer (6);

a reinforcing element protective layer (2) is arranged outside the reinforcing element (1), and the reinforcing element protective layer (2) is made of EVA rubber;

the material of the reinforcing element (1) is terylene;

the high-flame-retardant halogen-free belt layer (5) is formed by winding a high-flame-retardant halogen-free belt, and the overlapping rate of the high-flame-retardant halogen-free belt is 30-50%;

the sheath layer (7) is made of EVA rubber.