CN205302978U

CN205302978U - Strengthen resistance to compression type wind energy cable

Info

Publication number: CN205302978U
Application number: CN201521014657.XU
Authority: CN
Inventors: 芮逸; 芮文宰; 蒋临风; 刘晓停
Original assignee: JIANGSU LONG-E CABLE Co Ltd
Current assignee: JIANGSU LONG-E CABLE Co Ltd
Priority date: 2015-12-08
Filing date: 2015-12-08
Publication date: 2016-06-08
Anticipated expiration: 2025-12-08

Abstract

The utility model discloses a strengthen resistance to compression type wind energy cable, including the cable core, its cable core is strengthened the cores transposition by ground sinle silk and two that are three power core that triangle -shaped ties for and are arranged in three power core clearances to form, the space department of cable core is equipped with the filling layer, and the package is crowded outward in proper order to the cable core does not have steamed fire -retardant area, inner sheath, oversheath, including, still be equipped with metal pressure -resisting pipe between the oversheath, the cable possess under abominable wind farm environment low temperature resistantly, resistant frequently twist reverse, salt spray resistance, anti drawing to keeping the smooth and easy power transmission of cable, satisfying wind power equipment's normal operation, and compressive property, dampproofing and the leakproofness is good, attenuate little, shield effectual.

Description

A kind of reinforcement Anti-pressure wind energy cable

Technical field

This utility model belongs to power cable field, is specifically related to a kind of reinforcement Anti-pressure wind energy cable.

Background technology

In numerous regenerative resources, with the fastest developing speed, economically most suitably used when number wind power generations at present. Wind power generation is safe and clean, aboundresources, wind energy is inexhaustible, with not to the utmost, be the recyclability resource of a kind of perpetuity.

Wind energy cable generally has the feature that torsional property is excellent, and meanwhile, wind energy cable is generally desirable that cable has good low temperature resistant, salt spray resistance, anti-towing performance, so may insure that cable inland severe cold, coastal waters salt air corrosion adverse circumstances under use. But rated voltage 26/35kV and following low temperature resistant middle pressure wind energy cable are only capable of considering that the requirement of the performance such as antitorque, low temperature resistant, salt spray resistance of cable is far from being enough, rational metallic shielding structure and ground configurations design, be also to ensure that cable runs the guarantee of safety.

Stand in the angle running safety requirements ensureing to meet Large Copacity wind-driven generator, pressure wind energy cable in a kind of Halogen-free flame-retardant low-temperature resistant of exploitation, the requirement progressively meeting Wind turbines maximization development trend just seems particularly necessary, and the research to rated voltage 26/35kV and following low temperature resistant middle pressure wind energy cable conductor and the polymeric barrier layer materials of insulation, insulating layer material, and the design of cable metallic screens structure, ground configurations is the key pressing wind energy cable in Halogen-free flame-retardant low-temperature resistant; It addition, present cable core is easy to occur the disconnected core of bending, and compressive property is poor, moistureproof and sealing is poor, and bendability is worse.

Utility model content

The purpose of this utility model technical problem to be solved is just to provide a kind of reinforcement Anti-pressure wind energy cable, this cable possesses frequent torsion low temperature resistant, resistance to, salt spray resistance under severe wind power plant environment, anti-pulls, and keep that cable is smooth and easy to transmit electric power, meet the normal operation of wind power equipment, and compressive property, moistureproof and good airproof performance, decay little, shield effectiveness good.

Described in the utility model a kind of strengthening Anti-pressure wind energy cable, including cable core, its cable core is by three power wire core arranged side by side triangular in shape and is arranged in a wire core in three power wire core gaps and two strengthening cores are stranded forms; The gap of cable core is provided with packed layer, extrudes halogen-free flameproof band, inner sheath, oversheath outside cable core successively; Metal compression tube it is additionally provided with between inner/outer sheath; Described power wire core is to be made up of power line conductor and the conductor shielding semi-conductive layer being extruded in outside conductor successively, isolation strip, insulation screen, semiconductive lapping layer and metal screen layer; Described wire core is made up of gnd conductor and the semi-conductive layer that is extruded in outside gnd conductor; The cushion that described strengthening core is carried outside core by center carrying core and the center that is extruded in is constituted.

Improving further, described metal compression tube is the hard compression tube of wrapped or vertical bag, is specially embossing pipe so that the mechanical strength of cable is high, compressive property is good, and moistureproof and good airproof performance, embossing can improve its bending property.

Improving further, described conductor shielding semi-conductive layer is EPDM is the cross-linking type Halogen semiconductive shielding layer of base material.

Improving further, described isolation strip is pressure second the third insulation rubber with EPDM for the cross-linking type of base material.

Improve further, the peelable cross-linking type Halogen semiconductive shielding layer that described insulation screen is acetate ethylene copolymer and nitrile rubber is base material.

Improving further, described metal screen layer is tinned copper wire braid shielded.

Improving further, described oversheath is made up of low smoke, zero halogen uvioresistant thermoset elastomer materials.

The beneficial effects of the utility model are in that:

1. this cable insulation core adopts Halogen conductor shielding rubber, 35kV and following second the third insulation rubber and Halogen semiconductive cross-linking peelable insulation shielding rubber three-layer co-extruded; The Halogen conductor shielding rubber researched and developed, Halogen semiconductive cross-linking its specific insulation��100 of peelable insulation shielding rubber �� cm, Halogen performance: pH value >=4.3, electrical conductivity weighted value��10 �� s/mm; Rated voltage is 400 �� 10 lower than dielectric loss tan �� (95��100 DEG C) maximum of second the third insulation rubber pressing wind energy cable in 35kV Halogen-free flame-retardant low-temperature resistant⁴, specific insulation minima is 10¹⁶�� cm; Dielectric loss tan �� (95��100 DEG C) maximum pressing second third insulation rubber of wind energy cable in rated voltage 35kV Halogen-free flame-retardant low-temperature resistant is 50 �� 10⁴, specific insulation minima is 10¹⁶�� cm. Accordingly, it is capable to guarantee that the local discharging level of cable is excellent, discharge capacity��5Pc, insulation resistance excellent performance;

2, every power wire core of the present utility model adopts tinned copper wire braiding structure, can effectively suppress electromagnetic wave to emission, reduce the interference to equipment;

3, ground wire is placed on in the gap of cable core by this utility model, not only plays the effect of conducting failure electric current, also acts as the effect of balanced electric field, so that it is guaranteed that cable running safety;

4, this utility model is provided with strengthening core in cable, strengthens the anti-torsion ability of cable, and cable is not easily broken, and is not likely to produce disconnected core phenomenon; Strengthening core center is provided with a center carrying core, and the stress point of inner wire concentrates on center carrying core, and cable, in folding and unfolding winding process, protects inner wire annealing copper wire, and is not easily broken;

5, being additionally provided with metal compression tube between inner/outer sheath so that the mechanical strength of cable is high, compressive property is good, moistureproof and good airproof performance, embossing can improve its bending property.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

A kind of strengthening Anti-pressure wind energy cable as it is shown in figure 1, described in the utility model, including cable core, its cable core is by three power wire core arranged side by side triangular in shape and is arranged in a wire core in three power wire core gaps and two strengthening cores are stranded forms; The gap of cable core is provided with packed layer 7, extrudes halogen-free flameproof band 8, inner sheath 9, oversheath 11 outside cable core successively; It is additionally provided with metal compression tube 10 between inner/outer sheath 9,11; Described power wire core is to be made up of power line conductor 1 and the conductor shielding semi-conductive layer 2 being extruded in outside conductor 1 successively, isolation strip 3, insulation screen 4, semiconductive lapping layer 5 and metal screen layer 6; Described wire core is made up of gnd conductor 12 and the semi-conductive layer 13 that is extruded in outside gnd conductor 12; The cushion 15 that described strengthening core is carried outside core 14 by center carrying core 14 and the center that is extruded in is constituted.

The described hard compression tube that metal compression tube 10 is wrapped or vertical bag, is specially embossing pipe so that the mechanical strength of cable is high, compressive property is good, and moistureproof and good airproof performance, embossing can improve its bending property.

Described conductor shielding semi-conductive layer is EPDM is the cross-linking type Halogen semiconductive shielding layer of base material, the specific insulation��100 �� cm of conductor shield and insulation screen, Halogen performance: pH value >=4.3, electrical conductivity weighted value��10 �� s/mm; Described insulating barrier is pressure second the third insulation rubber with EPDM for the cross-linking type of base material, and rated voltage is 400 �� 104 lower than dielectric loss tan �� (95��100 DEG C) maximum of second the third insulation rubber pressing wind energy cable in 35kV Halogen-free flame-retardant low-temperature resistant; Dielectric loss tan �� (95��100 DEG C) maximum pressing second third insulation rubber of wind energy cable in rated voltage 35kV Halogen-free flame-retardant low-temperature resistant is 50 �� 104, and specific insulation minima is 1016 �� cm; The peelable cross-linking type Halogen semiconductive shielding layer that described insulation screen is acetate ethylene copolymer and nitrile rubber is base material; Described metal screen layer is tinned copper wire braid shielded; Described enhancement Layer is formed by the braiding of impregnation polyester cord, the fracture strength > 1070N of impregnation polyester cord.

The above is only of the present utility model be preferable to carry out method; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvement, these improvement also should be regarded as protection domain of the present utility model.

Claims

1. strengthen Anti-pressure wind energy cable for one kind, it is characterised in that: including cable core, its cable core is by three arranged side by side power wire core triangular in shape and is arranged in a wire core in three power wire core gaps and two strengthening cores are stranded forms; The gap of cable core is provided with packed layer (7), extrudes halogen-free flameproof band (8), inner sheath (9), oversheath (11) outside cable core successively; It is additionally provided with metal compression tube (10) between inner/outer sheath (9,11); Described power wire core is by power line conductor (1) and is extruded in the outer conductor shielding semi-conductive layer (2) of conductor (1), isolation strip (3), insulation screen (4), semiconductive lapping layer (5) and metal screen layer (6) successively and constitutes; Described wire core is by gnd conductor (12) and is extruded in gnd conductor (12) semi-conductive layer (13) outward and constitutes; Described strengthening core is carried core (14) by center and the center that is extruded in carries core (14) cushion (15) outward and constitutes.

2. reinforcement Anti-pressure wind energy cable according to claim 1, it is characterised in that the hard compression tube that described metal compression tube (10) is wrapped or vertical bag.

3. reinforcement Anti-pressure wind energy cable according to claim 1, it is characterised in that described conductor shielding semi-conductive layer (2) is cross-linking type Halogen semiconductive shielding layer that EPDM is base material.

4. reinforcement Anti-pressure wind energy cable according to claim 1, it is characterised in that described isolation strip (3) is pressure second the third insulation rubber with EPDM for the cross-linking type of base material.

5. reinforcement Anti-pressure wind energy cable according to claim 1, it is characterised in that described insulation screen (4) is peelable cross-linking type Halogen semiconductive shielding layer that acetate ethylene copolymer and nitrile rubber are base material.

6. reinforcement Anti-pressure wind energy cable according to claim 1, it is characterised in that described metal screen layer (6) is tinned copper wire braid shielded.