CN104051069A

CN104051069A - Cold-resistant twisting-resistant flame retardant wind energy power cable

Info

Publication number: CN104051069A
Application number: CN201410311788.8A
Authority: CN
Inventors: 虞文品; 张耀辉; 胡光祥; 鲁邦秀; 彭春瑶
Original assignee: XINGLE CABLE CO Ltd
Current assignee: XINGLE CABLE CO Ltd
Priority date: 2014-06-24
Filing date: 2014-06-24
Publication date: 2014-09-17

Abstract

The invention provides a cold-resistant twisting-resistant flame retardant wind energy power cable. According to the cable, a plurality of aramid yarn conductors and a plurality of annealed copper wire conductors are stranded into strand wires according to a certain pitch, the strand wires are subjected to compound stranding according to a certain pitch to form flexible conductors in the same direction, an isolation belt is wrapped outside the flexible conductors formed by conducting compound stranding on the strand wires in the same direction according to a certain coverage rate, an insulation layer is extruded outside the isolation belt, and a sheath is extruded outside the insulation layer. The cold-resistant twisting-resistant flame retardant wind energy power cable is excellent in resistance to flames, oil, ultraviolet light, corrosion, low temperature and twisting, thereby being capable of guaranteeing the performance requirement of wind power generation for the power cables.

Description

A kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round

Technical field

The present invention relates to a kind of cable, be specifically related to a kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round.

Background technology

Mostly current conventional wind energy cable is behind wrapped isolation strip, to extrude one deck insulation and add one deck sheath outside conductor, and conductor used is common stranded the forming of annealed copper wire, insulate for silicon rubber or ethylene-propylene rubber, and sheath is neoprene or haloflex.Along with the concern of people to regenerative resource, the stable development of wind power generation industry, according to Wind Energy In China association preliminary statistics according to the show, within 2013, China's wind-powered electricity generation adding new capacity is 1,610 ten thousand kilowatts, compared with 1296 kilowatts in 2012, significantly improve 24%, the installation of wind-powered electricity generation accumulative total has broken through 9,000 ten thousand kilowatts.Wind energy cable, as the crucial auxiliary products of wind power generation, is used widely along with the fast development of Wind Power Utilization, and conventional wind energy cable is cold-resistant, resistance to torsion, the performance such as fire-retardant are undesirable, and useful life is shorter.

Chinese patent once disclosed a kind of power cable for wind energy generation (CN201320641034), comprised three strand insulation cores, in three strand insulation core outsides, set gradually polypropylene belting layer, aramid fiber braiding load-bearing reinforced layer and neoprene rubber external sheath layer; Between three strand insulation cores and polypropylene belting layer, packed layer is set; Every insulated wire cores comprises respectively the zinc-plated soft copper tow strand of number annealing conductor, at the ethylene propylene rubber insulated layer of the zinc-plated soft copper tow strand conductor of number annealing outside parcel modification.

Chinese patent once disclosed a kind of wind energy power cable (CN201320484347), include leading body, power line core conductor, control line core conductor and subordinate line core conductor, described leading body, control line core conductor and subordinate line core conductor outside are surrounded by insulating barrier, described power line core conductor outside is surrounded by insulating barrier and metal screen layer successively, described leading body insulating barrier outside is distributed with two control line core conductors and outside is surrounded by lapping layer formation control core, by the tangent placement between two of four subordinate line core conductors and be surrounded by belting layer and form subordinate line core, four are controlled to core tangent placement between two and control between core and be provided with power line core conductor at every two, outside is coated with the gasket for packing that blocks water successively, ceramic fibre braid, steel-tape armouring layer, aluminium foil draws by wheat, tear rope and oversheath, described subordinate line core four control between core and respectively with four to control cores tangent.

Chinese patent once disclosed a kind of wind energy power cable (CN201220663495), comprise cable core conductor, inner covering, insulating barrier, protective layer, described cable core conductor comprises strand, described strand be by tinned copper wire according to regular stranded the forming of left-hand, described strand is according to the regular twisted synthesizing cable core conductor of dextrad; Described cable core conductor is disposed with inner covering, insulating barrier and protective layer outward.

Chinese patent once disclosed a kind of offshore wind power generation single-core power cables (CN201220598076) for machine, on conductor, extruded insulation layer forms insulated wire cores, surface in single insulated wire cores arranges the reinforced layer being woven into by filament, extrudes formation external sheath layer on reinforced layer; Conductor be adopt multiply tin-coated copper thread strand and multiple strand regular in the same way stranded and form.

Chinese patent once disclosed a kind of offshore wind power generation multi-core power cable (CN201220598322) for machine, on conductor, extruded insulation layer forms insulated wire cores, by many insulated wire cores twisted synthesizing cables, form cable core, on cable core, set gradually from inside to outside and extrude the inner covering of formation, the reinforced layer that filament braiding forms and the external sheath layer that extrudes formation; Conductor be adopt multiply tin-coated copper thread strand and multiple strand regular in the same way stranded and form.

Chinese patent once disclosed a kind of low-temperature wind-energy power cable (CN201220348281), comprised cable core, at cable core, was wound around lapping layer outward, and outermost layer extrudes restrictive coating, and the rubber packing extruding between several wire core and core is twisted into cable core; Described core is by the overlapping wrapped isolation strip of stranded conductor outer surface, and outside isolation strip, extruded insulation layer forms again.

Summary of the invention

What the object of the present invention is to provide a kind of fire-retardant, oil resistant, UV resistant, corrosion-resistant, low temperature resistant, resistance to twisting property excellence cold-resistant resistance toly turns round fire-retardant wind energy power cable, to ensure the performance requirement of power cable for wind energy generation.

For achieving the above object, the solution that the present invention takes is: a kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round, by some aramid fiber yarn conductor parts and some annealed copper wire conductor parts, by certain pitch, be twisted into strand, by strand, according to certain pitch, be twisted into again in the same way flexible conductor again, the flexible conductor being twisted into again in the same way by strand is outer by certain wrapped isolation strip of the rate of putting up, extruded insulation outside isolation strip extrudes sheath outside insulation.

Described insulation 5 utilizes rubber extruding machine to extrude according to certain thickness and forms outside isolation strip 4, and its material is ethylene-propylene rubber.

Described sheath 6 utilizes plastic extruding machine to extrude according to certain thickness and forms outside insulation 5, and its material is polyurethane.

Compared with the prior art, the technological improvement of this cable is embodied in:

1, adopted a kind of novel conductor structure, adopted some aramid fiber yarns and some annealed copper wires to be twisted into strand by certain pitch, then according to certain pitch, be twisted into again in the same way flexible conductor by strand.This high strength aramid fiber yarn that increases in the middle of strand also adopts and is twisted into again in the same way the conductor structure of flexible conductor, makes wind energy cable when being subject to the mechanical stress effects such as frequent bending, torsion, has higher than the counter-bending of conventional wind energy cable and anti-torsion performance; This increase high strength aramid fiber yarn in the middle of the strand and adopt be twisted into again in the same way the conductor structure of flexible conductor, the external diameter of wind energy cable is reduced and pliability is enhanced.

2, adopt ethylene propylene rubber insulated and polyurethane jacket, due to the electrical property of ethylene propylene rubber insulated excellence, also helped to have extended the useful life of wind energy cable; Novel conductor structure and ethylene propylene rubber insulated and polyurethane jacket fit structure also help to have increased the pliability of cable.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of the present embodiment.

In figure: 1, aramid fiber yarn conductor part, 2, annealed copper wire conductor part, 3, strand, 4, isolation strip, 5, insulation; 6, sheath.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described again.

As shown in Figure 1, a kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round, by some aramid fiber yarn conductor parts 1, by certain pitch, be twisted into strand 3 with some annealed copper wire conductor parts 2, by strand 3, according to certain pitch, be twisted into again in the same way flexible conductor again, the flexible conductor being twisted into again in the same way by strand 3 is outer by the wrapped isolation strip 4 of certain rate of putting up, outside isolation strip, extruded insulation 5, outside insulation 5, extrude sheath 6.

As shown in Figure 1, described insulation 5 utilizes rubber extruding machine to extrude according to certain thickness and forms outside isolation strip 4, and its material is ethylene-propylene rubber.

As shown in Figure 1, described sheath 6 utilizes plastic extruding machine to extrude according to certain thickness and forms outside insulation 5, and its material is polyurethane.

The above is only the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.

Claims

1. the cold-resistant resistance to fire-retardant wind energy power cable of turning round, it is characterized in that: by some aramid fiber yarn conductor parts (1) and some annealed copper wire conductor parts (2), by certain pitch, be twisted into strand (3), by strand (3), according to certain pitch, be twisted into again in the same way flexible conductor again, the flexible conductor being twisted into again in the same way by strand (3) is outer by certain wrapped isolation strip of the rate of putting up (4), extruded insulation outside isolation strip (5) extrudes sheath (6) outside insulation (5).

2. a kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round according to claim 1, is characterized in that: described insulation (5) utilizes rubber extruding machine to extrude according to certain thickness and forms outside isolation strip (4), and its material is ethylene-propylene rubber.

3. a kind of cold-resistant resistance to fire-retardant wind energy power cable of turning round according to claim 1, is characterized in that: described sheath (6) utilizes plastic extruding machine to extrude according to certain thickness and forms outside insulation (5), and its material is polyurethane.