CN103971826A

CN103971826A - Torsion-resistant cable

Info

Publication number: CN103971826A
Application number: CN201410168568.4A
Authority: CN
Inventors: 张元船; 华齐东; 杨茂明; 于杰; 陆秀国
Original assignee: Anhui Huining Electric and Measuring Appliance Co Ltd
Current assignee: Anhui Huining Electric and Measuring Appliance Co Ltd
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2014-08-06

Abstract

The invention discloses a torsion-resistant cable. The torsion-resistant cable comprises a main conductor and control conductors. The main conductor and control conductors are respectively twisted with a fiber rope in a paired mode, and are respectively coated with a polyimide insulating layer and a polyurethane elastic ring in sequence after undergoing pair twist. The control conductors are sleeved with oval elastic frames. The main conductor is placed inside a V-shaped elastic frame and the two control conductors are placed outside the V-shaped elastic frame respectively to form a cable core. The cable core is coated with a silica-magnesia-alumina alloy wire-braided shielding layer, a silver-plated steel-tape armor layer, a waterproof canvas surrounding layer and an outer sheath in sequence. Due to the fact that the control conductors are sleeved with the oval elastic frames and the cable core is sleeved with the silica-magnesia-alumina alloy wire-braided shielding layer, the silver-plated steel-tape armor layer, the waterproof canvas surrounding layer and the outer sheath in sequence, the torsion-resistant cable is simple in structure, reasonable, novel and compact in design, good in waterproofing effect and high in torsion resistance.

Description

A kind of twist resistant cable

Technical field

The present invention relates to cable technology field, relate in particular to a kind of twist resistant cable.

Background technology

In a lot of wind power generation systems, serve as transmission cable with common cable at present, in the design applied environment of common cable, do not consider the torsion that large wind produces, therefore anti-twist scarce capacity.For a long time in wind energy system, use the cable of anti-twist scarce capacity can have influence on the life-span of whole system.

Traditional cable jacket material lower temperature resistance is poor, at low temperature environment, embrittlement cracking phenomena easily occurs, and shortens the useful life of cable.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, and a kind of twist resistant cable is provided.Cable jacket material lower temperature resistance of the present invention is better, holds embrittlement cracking phenomena does not occur at low temperature environment, extends the useful life of cable.

The present invention is achieved by the following technical solutions:

A kind of twist resistant cable, include leading body and control conductor, leading body and control conductor all with cordage pair twist, after pair twist, be all coated with successively polyimide insulative layer and elastic polyurethane circle in the outside of leading body and control conductor, in control conductor outside, also cover has oval elastic skeleton, the outside that leading body is placed on to the inner side of V-shape elastic skeleton and two control conductors are placed on respectively to V-shape elastic skeleton forms cable core, be coated with successively magnesia-alumina-silica silk woven shield in the outside of cable core, silver-plated steel band armour, Tarpauling lapping layer and oversheath.

Jacket material is made up of the raw material of following weight portion: methyl ethylene phenyl siloxane rubber 50-70, epichlorohydrin rubber 20-30, acrylate rubber 10-15, cumyl peroxide 2-4, cyanacrylate 3-5, activated magnesia 2-3, calcium hydroxide 5-10, bisphenol AF 2-3, diphenyl silanediol 3-5, precipitated silica 20-30, paraffin oil 10-15, triethyl phosphite 5-10, three iso stearate isopropyl titanate 1-2, age resistor OD2-3, antioxidant MB 0.5-1.5, silicon powder 10-15, magnesium carbonate 5-10, modified mineral filler 10-15,

The preparation method of described modification complex mineral filler is as follows: (1) in mass ratio 4-8:3-5:2-3:1 takes barite, olivine, attapulgite, illite and mixes, pulverize, cross 50-100 mesh sieve, then at 820-880 DEG C of temperature lower calcination 20-30min, continue to be warming up to 1050-1150 DEG C, calcining 2-3h, shrend, dries; (2) get and be equivalent to 4 of absolute ethyl alcohol doubly of complex mineral filler weight 2-3,40-50%, the glyoxal ethyline of 4'-MDA epoxy resin, 2-4% mixes with the compounded mix that step (2) is processed, heating water bath is to 120-140 DEG C, 500-1000rpm high-speed stirred 0.5-1h, filter, dry; (3) get and after complex mineral filler that the dimethicone of dioctyl azelate, the 3-5% of xylene formaldehyde resin, the 4-8% of polytrifluorochloroethylene, the 5-10% of the ethylene-vinyl acetate copolymer, the 20-30% that are equivalent to complex mineral filler weight 30-40% processes with step (2) mixes, together drop into double screw extruder and carry out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of jacket material of the present invention, comprise the following steps: take in methyl ethylene phenyl siloxane rubber, epichlorohydrin rubber, cumyl peroxide, cyanacrylate, bisphenol AF, diphenyl silanediol, precipitated silica, the mill of paraffin oil input, be mixing 4-8min at 85-95 DEG C of temperature in roller temperature, then dancer rools temperature is to 60-70 DEG C, add the mixing 6-12min of all the other raw materials, park 5-10h, discharging.

Advantage of the present invention is: the present invention also overlaps and has oval elastic skeleton in control conductor outside, be coated with successively magnesia-alumina-silica silk woven shield, silver-plated steel band armour, Tarpauling lapping layer and oversheath in the outside of cable core, simple in structure, reasonable in design novel compact, good water-proof effect, anti-twisting property is strong.

Cable jacket material resistance to low temperature excellence of the present invention can normally be worked under-105 DEG C of low temperature, still keeps good physical and mechanical properties and pliability, and has the good performance such as anti-oxidant, weather-proof, resistance to ablation and resistance to irradiation, long service life.

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, a kind of twist resistant cable, include leading body 1 and control conductor 2, leading body 1 and control conductor 2 all with cordage 3 pair twists, after pair twist, be all coated with successively polyimide insulative layer 4 and elastic polyurethane circle 5 in the outside of leading body 1 and control conductor 2, also overlap and have oval elastic skeleton 6 in control conductor 2 outsides, the outside that leading body 1 is placed on to the inner side of V-shape elastic skeleton 7 and two control conductors 2 are placed on respectively to V-shape elastic skeleton 7 forms cable core, be coated with successively magnesia-alumina-silica silk woven shield 8 in the outside of cable core, silver-plated steel band armour 9, Tarpauling lapping layer 10 and oversheath 11.

Oversheath 11 materials are made up of the raw material of following weight portion: methyl ethylene phenyl siloxane rubber 60, epichlorohydrin rubber 25, acrylate rubber 15, cumyl peroxide 3, cyanacrylate 4, activated magnesia 2.5, calcium hydroxide 7, bisphenol AF 2.5, diphenyl silanediol 4, precipitated silica 25, paraffin oil 12, triethyl phosphite 8, three iso stearate isopropyl titanates 1.5, age resistor OD2, antioxidant MB 1, silicon powder 12, magnesium carbonate 8, modified mineral filler 12;

The preparation method of described modification complex mineral filler is as follows: (1) in mass ratio 7:4:3:1 takes barite, olivine, attapulgite, illite and mixes, pulverize, cross 80 mesh sieves, then at 840 DEG C of temperature lower calcination 25min, continue to be warming up to 1100 DEG C, calcining 2h, shrend, dries; (2) get be equivalent to 2.5 times of complex mineral filler weight absolute ethyl alcohol, 40% 4,4'-MDA epoxy resin, 2.5% glyoxal ethyline mix with the compounded mix that step (2) is processed, heating water bath to 125 DEG C, 500-1000rpm high-speed stirred 0.5-1h, filter, dry; (3) get be equivalent to ethylene-vinyl acetate copolymer, 25% polytrifluorochloroethylene, 8% xylene formaldehyde resin, 5% the dioctyl azelate of complex mineral filler weight 35%, complex mineral filler that 3% dimethicone is processed with step (2) together drops into double screw extruder after mixing and carries out melt blending, then extruding pelletization, naturally cool to room temperature, be modification complex mineral filler.

The preparation method of oversheath 11 materials, comprise the following steps: take in methyl ethylene phenyl siloxane rubber, epichlorohydrin rubber, cumyl peroxide, cyanacrylate, bisphenol AF, diphenyl silanediol, precipitated silica, the mill of paraffin oil input, be mixing 4-8min at 85-95 DEG C of temperature in roller temperature, then dancer rools temperature is to 60-70 DEG C, add the mixing 6-12min of all the other raw materials, park 5-10h, discharging.

The results of property of the oversheath 11 making after testing, is as following table:

Claims

1. a twist resistant cable, it is characterized in that: include leading body and control conductor, leading body and control conductor all with cordage pair twist, after pair twist, be all coated with successively polyimide insulative layer and elastic polyurethane circle in the outside of leading body and control conductor, in control conductor outside, also cover has oval elastic skeleton, the outside that leading body is placed on to the inner side of V-shape elastic skeleton and two control conductors are placed on respectively to V-shape elastic skeleton forms cable core, be coated with successively magnesia-alumina-silica silk woven shield in the outside of cable core, silver-plated steel band armour, Tarpauling lapping layer and oversheath.

2. twist resistant cable according to claim 1, it is characterized in that: described jacket material is made up of the raw material of following weight portion: methyl ethylene phenyl siloxane rubber 50-70, epichlorohydrin rubber 20-30, acrylate rubber 10-15, cumyl peroxide 2-4, cyanacrylate 3-5, activated magnesia 2-3, calcium hydroxide 5-10, bisphenol AF 2-3, diphenyl silanediol 3-5, precipitated silica 20-30, paraffin oil 10-15, triethyl phosphite 5-10, three iso stearate isopropyl titanate 1-2, age resistor OD 2-3, antioxidant MB 0.5-1.5, silicon powder 10-15, magnesium carbonate 5-10, modified mineral filler 10-15,

3. twist resistant cable according to claim 1, it is characterized in that: the preparation method of described jacket material, it is characterized in that comprising the following steps: take in methyl ethylene phenyl siloxane rubber, epichlorohydrin rubber, cumyl peroxide, cyanacrylate, bisphenol AF, diphenyl silanediol, precipitated silica, the mill of paraffin oil input, be mixing 4-8min at 85-95 DEG C of temperature in roller temperature, then dancer rools temperature is to 60-70 DEG C, add the mixing 6-12min of all the other raw materials, park 5-10h, discharging.