CN102568680A - Wind energy cable and production method thereof - Google Patents
Wind energy cable and production method thereof Download PDFInfo
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- CN102568680A CN102568680A CN2012100668733A CN201210066873A CN102568680A CN 102568680 A CN102568680 A CN 102568680A CN 2012100668733 A CN2012100668733 A CN 2012100668733A CN 201210066873 A CN201210066873 A CN 201210066873A CN 102568680 A CN102568680 A CN 102568680A
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Abstract
The invention discloses a wind energy cable, comprising an outer sheath layer and at least one insulation core, wherein the insulation core comprises a conductor and an insulation layer, a longitudinal covered slippage-resistance layer is arranged between the conductor and the insulation layer, the slippage-resistance layer is a Teflon band, the conductor comprises a composite oxygen-free copper wire and a copper-clad steel wire, the composite conductor increases the tensile property and torsion resistance performance of the wind energy cable. The longitudinal covered slippage-resistance layer is arranged between the conductor and the insulation layer, so as to make the most of the self-lubrication, high intensity, high temperature resistance and low temperature resistance features of the Teflon band, ensure that the slippage resistance layer can bear high temperature and high pressure during the extruded insulation process, the conductor and the insulation layer can completely slip during the use, the insulation can not be damaged during slippage, and the requirement of low temperature resistance can be satisfied.
Description
Technical field
The present invention relates to technical field of electric wires and cables, in particular, relate to a kind of wind energy cable and manufacturing approach.
Background technology
Along with rising steadily and the day by day emphasis of people of traditional energy price to environmental protection; Country begins to greatly develop renewable new forms of energy and improves two importances that energy utilization rate becomes the sustainable development energy undisputedly; Wherein wind energy is as the generation mode the most ripe, exploitation condition on the largest scale and commercialized development prospect of technology in the new forms of energy, and the development speed of wind power generation attracts people's attention.The development of wind-powered electricity generation industry has proposed demand to the used for wind power generation cable, and is put on market by the exploitation of numerous cable enterprise.
Seeing that the wind-powered electricity generation engineering-environment is abominable; Blower fan requires very long again service life; And cable needs with the wind constantly rotation in rugged environment; Common cable is because fatal weakness such as " anti-applied environment ability, safety and reliability are low, useful life is short " can't satisfy the special instructions for use of wind-powered electricity generation engineering.
Therefore; High temperature resistant, cold-resistant, the anti-normal temperature that improves wind energy cable reverses, low-temperature torsion resistance, high temperature resistantly reverse, reverse under the load, load test (pull resistance), low-temperature bending, UV resistant, performance such as fire-retardant; Adapting to the mal-condition of wind energy motor device, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this; The invention provides a kind of wind energy cable, to overcome in the prior art because wind energy cable reverses at high temperature resistant, cold-resistant, anti-normal temperature, low-temperature torsion resistance, high temperature resistantly reverse, reverse under the load, the problem of load test (pull resistance), low-temperature bending, UV resistant, aspect deficiency such as fire-retardant.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of wind energy cable comprises: external sheath layer and at least one insulated wire cores, and said insulated wire cores comprises: conductor and insulating barrier, be provided with the vertical anti-glide lamella that wraps between said conductor and the said insulating barrier, said anti-glide lamella is a teflin tape.
Preferably, said conductor comprises compound copper free wire and welding wire.
Preferably, when said wind energy cable is multicore, be provided with the reinforcement filled core in said insulated wire cores center clearance, said reinforcement filled core is that the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with wind energy cable insulating barrier same material constitutes.
Preferably, also comprise inner restrictive coating, between said inner restrictive coating and the external sheath layer woven shield is set, be provided with wrapped anti-glide lamella between said woven shield and the said external sheath layer.
Preferably, said woven shield is zinc-plated or the woven shield of tinned copper wire not.
The invention also discloses a kind of manufacturing approach of wind energy cable, said wind energy cable comprises: external sheath layer and at least one insulated wire cores, and said insulated wire cores comprises: conductor and insulating barrier is characterized in that this method comprises:
Conductor is made, and vertical anti-glide lamella of bag and insulation extrude between conductor and insulating barrier, and said anti-glide lamella is specially teflin tape, carries out external sheath layer then and extrudes.
Preferably; When said wind energy cable is multicore cable; Before said external sheath layer extrudes step, also comprise: with said insulated wire cores with strengthen filled core and carry out stranded stranding and constitute cable core, and when stranded stranding band not; Said reinforcement filled core is arranged on the center clearance of said cable core, and said reinforcement filled core is that the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with said wind energy cable insulating barrier same material constitutes.
Preferably; When said wind energy cable is the shield type multicore cable; With said insulated wire cores and said reinforcement filled core are carried out stranded stranding step after, also comprise: said cable core is carried out inner restrictive coating extrude, said inner restrictive coating is provided with woven shield outward; Said woven shield adopts zinc-plated or not tinned copper wire braiding, wrapped then anti-glide lamella.
Can know via above-mentioned technical scheme; Compared with prior art, a kind of wind energy cable disclosed by the invention and manufacturing approach thereof are through the anti-glide lamella of vertical bag between said conductor and said insulating barrier; Anti-glide lamella is a teflin tape; Make full use of self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of teflin tape, it is injury-free to have guaranteed that in the extruded insulation process anti-glide lamella can bear HTHP, guarantees relatively fully slippage between wind energy cable conductor and the insulation in actual use; And do not damage insulation during slippage, satisfy the low temperature resistant requirement of cable simultaneously.
In addition,, in the middle of cable core, the reinforcement filled core is set, has also strengthened the pull resistance and the anti-twisting property of cable for multicore cable.Band not when stranded stranding embeds stranding cable core outer rim gap when being convenient to inner restrictive coating or external sheath layer and extruding, so that the Stability Analysis of Structures in cable core of insulated wire cores, strengthens the anti-twisting property of cable.
At last; The anti-glide lamella of wrapped teflin tape between woven shield and external sheath layer; It is injury-free to have guaranteed that in extruding the sheath process anti-glide lamella can bear HTHP; Guarantee wind energy cable relatively fully slippage between woven shield and the external sheath layer in actual use, and do not damage external sheath layer during slippage.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is the structural representation of the disclosed a kind of wind energy cable of the embodiment of the invention;
Fig. 2 is the structural representation of the disclosed another kind of wind energy cable of the embodiment of the invention;
Fig. 3 is the structural representation of the disclosed another kind of wind energy cable of the embodiment of the invention;
Fig. 4 is the flow chart of the manufacturing approach of the disclosed a kind of wind energy cable of the embodiment of the invention;
Fig. 5 is the flow chart of the manufacturing approach of the disclosed another kind of wind energy cable of the embodiment of the invention;
Fig. 6 is the flow chart of the manufacturing approach of the disclosed another kind of wind energy cable of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
For high temperature resistant, cold-resistant, the anti-normal temperature that improves wind energy cable reverses, low-temperature torsion resistance, high temperature resistantly reverse, reverse under the load, load test (pull resistance), low-temperature bending, UV resistant, performance such as fire-retardant; The mal-condition that adapts to the wind energy motor device; The invention discloses a kind of wind energy cable and manufacturing approach; Said wind energy cable is through the anti-glide lamella of vertical bag between said conductor and said insulating barrier, and anti-glide lamella is a teflin tape, has made full use of self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of teflin tape; It is injury-free to have guaranteed that in the extruded insulation process anti-glide lamella can bear HTHP; Guarantee relatively fully slippage between wind energy cable conductor and the insulation in actual use, and do not damage insulation during slippage, satisfy the low temperature resistant requirement of cable simultaneously.
See also accompanying drawing 1, be the structural representation of the disclosed a kind of wind energy cable of the embodiment of the invention; Present embodiment discloses a kind of wind energy cable; Specifically comprise: external sheath layer 104 and an insulated wire cores; Said insulated wire cores comprises: conductor 101 and insulating barrier 102, be provided with the vertical anti-glide lamella 103 that wraps between said conductor and the said insulating barrier, and said anti-glide lamella 103 is a teflin tape.Said conductor 101 can be compound copper free wire and welding wire, and the adding of welding wire can increase the tensile property and the anti-twisting property of wind energy cable.Said insulating barrier 102 adopts polymer composites such as cold-resistant high temperature resistant type polyvinyl chloride, ethylene-propylene rubber, thermoplastic elastomer, silicon rubber to extrude and forms.In sum, can find out present embodiment disclosed be non-shield type list core wind energy cable.
The disclosed a kind of wind energy cable of present embodiment; Through the anti-glide lamella of vertical bag between said conductor and said insulating barrier; Anti-glide lamella is a teflin tape; Make full use of self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of teflin tape, it is injury-free to have guaranteed that in the extruded insulation process anti-glide lamella can bear HTHP, guarantees relatively fully slippage between wind energy cable conductor and the insulation in actual use; And do not damage insulation during slippage, satisfy the low temperature resistant requirement of cable simultaneously.
On the basis of the disclosed embodiment of the invention described above, present embodiment also discloses another kind of wind energy cable, sees also accompanying drawing 2, is the structural representation of the disclosed a kind of wind energy cable of present embodiment; Specifically comprise: external sheath layer 104 and three insulated wire cores, said insulated wire cores comprises: conductor 101 and insulating barrier 102, be provided with the vertical anti-glide lamella 103 that wraps between said conductor and the said insulating barrier, said anti-glide lamella 103 is a teflin tape.Said conductor 101 comprises compound copper free wire and welding wire, and welding wire adds, and can increase the tensile property and the anti-twisting property of wind energy cable.Said insulating barrier 102 adopts polymer composites such as cold-resistant high temperature resistant type polyvinyl chloride, ethylene-propylene rubber, thermoplastic elastomer, silicon rubber to extrude and forms.It is stranded that said three insulated wire cores need be carried out insulated wire cores, adopts the cabler with back twist function, avoids insulated wire cores conductor and insulating barrier too to be reversed or scratch, guarantees the anti-twisting property of cable.Also should place reinforcement filled core 205 in the cable core center clearance; Strengthen the pull resistance and the anti-twisting property of cable; Strengthening filled core 205 is made up of the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with wind energy cable insulating barrier same material; Present embodiment is an example with three insulated wire cores, but the invention is not restricted to three insulated wire cores.In sum, can find out present embodiment disclosed be a kind of non-shield type multicore wind energy cable.
The disclosed a kind of wind energy cable of present embodiment on the basis of the disclosed wind energy cable of the foregoing description, has also been placed the reinforcement filled core in the cable core center clearance, thereby has further strengthened the pull resistance and the anti-twisting property of cable.
Above-mentioned disclosed wind energy cable is no matter be single core; Still multicore all belongs to non-shield type wind energy cable; On the disclosed basis of above-mentioned present embodiment; Present embodiment also discloses a kind of wind energy cable, sees also accompanying drawing 3, is the structural representation of the disclosed another kind of wind energy cable of the embodiment of the invention; Have on the basis of above-mentioned described basic structure; Also comprise: inner restrictive coating 306; Between said inner restrictive coating 306 and the external sheath layer 104 woven shield 307 is set; Be provided with wrapped anti-glide lamella 308 between said woven shield 307 and the said external sheath layer 104, said woven shield 307 is zinc-plated or the woven shield of tinned copper wire not.The anti-glide lamella 308 of wrapped teflin tape is set between woven shield 307 and external sheath layer 104.The woven shield of present embodiment setting can improve the shielding properties of wind energy cable effectively; In addition; Wrapped anti-glide lamella between woven shield and external sheath layer; Further utilize self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of polytetrafluoroethylene, it is injury-free to guarantee that in extruding the sheath process anti-glide lamella can bear HTHP, guarantees wind energy cable relatively fully slippage between woven shield and the oversheath in actual use; And do not damage sheath during slippage, satisfy the low temperature resistant requirement of cable simultaneously.In sum, can find out present embodiment disclosed be a kind of shield type multicore wind energy cable.
The disclosed a kind of wind energy cable of present embodiment; The woven shield that is provided with can improve the shielding properties of wind energy cable effectively; And between woven shield and external sheath layer the anti-glide lamella of wrapped teflin tape; It is injury-free to have guaranteed that in extruding the sheath process anti-glide lamella can bear HTHP, guarantees wind energy cable relatively fully slippage between woven shield and the external sheath layer in actual use, and does not damage external sheath layer during slippage.
The invention also discloses a kind of manufacturing approach of wind energy cable, see also accompanying drawing 4, be the flow chart of the manufacturing approach of a kind of wind energy cable disclosed by the invention; Said wind energy cable comprises: external sheath layer and at least one insulated wire cores, and said insulated wire cores comprises: conductor and insulating barrier, concrete steps are following:
Step 401: conductor manufacturing.
Conductor material is the oxygen-free copper bar of diameter 8mm; The copper covered steel wire of suitable diameter or copper covered steel tinned wire; The material of anti-the glide lamella is the thick teflin tape of 0.06mm; Strengthen filled core and be made up of the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with wind energy cable insulating barrier same material, insulating material comprises: outsourcing insulating material and self-control insulating material; The restrictive coating material comprises: outsourcing protective cover material and self-control protective cover material.
Requirement for conductor: the requirement of conductor monofilament, copper monofilament adopt diameter 8mm oxygen-free copper bar to be drawn into the 5th kind or the 6th kind of required filament diameter of conductor, and monofilament surface is smooth, rounding, no burr; Nominal cross 6mm
2And the conductor of following cable adopts the 5th kind of bare copper wire or the tinned copper wire that meets the GB/T3956 regulation, nominal cross 10mm
2And the conductor of above cable adopts the 6th kind of bare copper wire or the tinned copper wire that meets the GB/T3956 regulation; The copper covered steel filament diameter is identical with the copper filament diameter.The conductor monofilament can be zinc-plated, also can be not zinc-plated.Conductor structure: conductor forms by strand is stranded.Strand is closed by the conductor filament tow and forms.Conductor center strand is closed by the copper covered steel filament tow and forms.The outer strand of conductor is closed by the copper filament tow and forms.Conductor is made critical process: 1. filament tow closes technological parameter: aligning method is by regular stranded regularly arranged, and the strand filament tow closes lay ratio and is not more than 16 times, and it is left-hand that bundle closes direction.2. the stranded technological parameter of strand: aligning method is by regular stranded regularly arranged, and conductor forms by strand is stranded, and its stranded lay ratio is not more than 12 times, and direction of lay all is a left-hand,
It is identical with the strand direction of lay that above-mentioned filament tow closes direction, can increase the pliability of conductor, helps cable through reversing and bend test.
Annotate: regular stranded, promptly stranded monofilament or strand diameter are identical, and every layer of conductor monofilament or strand radical are Duoed 6 arrangement concentric stranding mode than its interior one deck conductor monofilament or strand radical.Regular stranded roundness and the tightness that improves conductor, thus the anti-twisting property of conductor can be improved.
Step 402: vertical anti-glide lamella of bag and insulation extrude between said conductor and said insulating barrier.
Different according to wind energy cable use and product type, its insulating material kind is also different, introduces the technology that extrudes of various insulating material below:
For the common technology that extrudes:
When various insulating material extrude, all should adopt technology what follows.
1. the anti-glide lamella of vertical bag: between conductor and insulating barrier, indulging bag one layer thickness during extruded insulation is the polytetrafluoroethylene of anti-slipping property isolation strip of 0.06mm, and the polytetrafluoroethylene bandwidth adds 2-3mm for the conductor girth.This glide lamella had both prevented the adhesion of insulation and conductor, and conductor can freely rotate in the time of guaranteeing to reverse again, thereby had improved the anti-twisting property of cable greatly.
2. extrude mould and adopt plsitive mold.The insulating barrier that plsitive mold extrudes has densification, round and smooth, the uniform characteristics of external diameter, can improve the anti-twisting property of cable.
For material different, its equipment that extrudes, mould and technology controlling and process are also different, introduce the characteristics that extrude of several kinds of different insulative materials below.
Extruding of thermoplastic elastomer SR6680-80 type TPE insulation; Extrude equipment and mold and adopt common plastics extruder and plsitive mold parameter to get final product, extrude temperature control: feeding section 120-130 ℃, melt zone 150-160 ℃; All press 165-170 ℃ of section; 170-175 ℃ on machine neck, head 170-175 ℃, die orifice 170-175 ℃.Extrude technology controlling and process: extrude technology by common plastics and control.
Extruding of silicon rubber gross rubber NE271 type insulation at equipment and mould: 65/14 and 120/14 silicon rubber that adopts Shanghai star's technical machinery Co., Ltd to produce is extruded the production of hot-air cure production line.The angle of core rod and die sleeve is the 30-35 degree, and the intermode tool is 1.5-1.8 a times of insulation thickness, and other parameter adopts the mixing insulating cement plsitive mold of General Purpose Rubber parameter to get final product.Prescription and hybrid technology, prescription: elastomeric compound NE271 type 10kg, two 2,4 vulcanizing agent 140-150g, color masterbatch 8-10g.Mixing apparatus and technology: the employing roller diameter is 400mm, and the roller speed ratio is 1: 1.27 mill, full open roller cooling water; Roll spacing is adjusted to 2mm, throws in elastomeric compound NE271 type, about 1 minute of bag roller spreading; Throw in two 2,4 vulcanizing agents and continue about 30 seconds of spreading with color masterbatch, it is mixing to follow clot tube 5 times; Roll spacing is adjusted to 5mm, after continuation clot tube mixes 5 times, presses film under the 8-10mm width requirement; And disperse cold to hang on the cool glue frame film, when treating that film is cooled to roughly room temperature, supply insulation to extrude materials.Conductor wire core preheat temperature control: 200-280 ℃.Curing temperature and linear velocity control: 65/14 silicon rubber is extruded the hot-air cure production line and is established four warm areas; Setting curing temperature successively by crowded insulated wire cores trend is 230-240 ℃, 210-220 ℃, 200-210 ℃, 180-190 ℃; Size according to insulation thickness; Linear velocity be controlled to be 20-30 rice/minute, the big more linear velocity of insulation thickness is more little.120/14 silicon rubber is extruded the hot-air cure production line and is established 16 warm areas; Setting curing temperature successively by crowded insulated wire cores trend is 190-200 ℃, 250-260 ℃, 260-270 ℃, 260-270 ℃, 260-270 ℃, 260-270 ℃, 270-280 ℃, 270-280 ℃, 260-270 ℃, 260-270 ℃, 250-260 ℃, 250-260 ℃, 250-260 ℃, 250-260 ℃, 240-250 ℃, 190-200 ℃; Size according to insulation thickness; Linear velocity be controlled to be 5-12 rice/minute, the big more linear velocity of insulation thickness is more little.Insulated wire cores post-cure technology: for remove the analyte that vulcanizing agent is produced in sulfidation, prevent bloom and silicon rubber degradation, improve thermal endurance, one time the good insulated wire cores of squeezing bag sulfuration should be carried out post-cure.The temperature of post-cure temperature during with extruded insulation is identical, and linear velocity reduces by half.
Extruding of cold resisting type ethylene-propylene rubber insulation at equipment: employing band pressure charging mechanism, screw slenderness ratio are 16 Φ 90 continuous vulcanization extruding production lines.The characteristics that the ethylene-propylene rubber Insulation Material has reinforced difficulty, is prone to skid force charging mechanism can guarantee the reinforced material that do not fall.Screw rod has bigger draw ratio (16), can guarantee that Insulation Material is fully mixed before moulding and plastified, and is beneficial to the insulating barrier moulding.Originally the equipment of extruding can guarantee that insulating barrier is fine and close, even, thereby can improve its anti-twisting property.Extruding a, die parameters requires: hold line length, the sizing length requirement is bigger, core rod hold 1-3 that line length gets conductor diameter doubly, the sizing length of die sleeve is got insulation external diameter 1-1.2 doubly, intermode is apart from be 1.2-1.5 times of insulation thickness.B, extrude Stability Control: motor speed is controlled at 40～80% of motor rated speed, with stability, the cable insulation core external diameter stable and uniform of guaranteeing extrusion capacity.C, extrude temperature control: 30～40 ℃ of feed openings, one section 45～50 ℃ on fuselage, two sections 55～60 ℃ on fuselage, head 70-75 ℃, mould 80-90 ℃, the logical in right amount cooling water of screw rod.D, sulfuration process control: steam pressure 1.0Mpa, 18～20 meters/minute of traction linear speeds.Employing can guarantee that than low vapor pressure and slow linear velocity the inside and outside vulcanized quality performance of insulating barrier is even.E, interleaving agent coating processes: in bosh, add an amount of talcum powder, make surface of insulating layer evenly apply one deck interleaving agent, when cable reverses, be beneficial to the rotation of insulated wire cores like this, thereby improve the anti-twisting property of electric insulation core.
Step 403: carry out external sheath layer and extrude.
For extruding of external sheath layer; Different according to cable use and product type; Its material category is also different, and except that polyurethane elastomer SR6002FZW type (TPU) and cold resisting type fire-retardant chlorinated polyethylene sheath material, flow process that extrudes and method are similar with extruding of insulating barrier.
Extruding of ammonia ester elastomer SR6002FZW type (TPU) at equipment: the employing screw slenderness ratio is that 1: 25 various plastic extruding machine gets final product.Extrude, a, die parameters require: adopt plsitive mold, die sleeve sizing size is than the little 0.3～0.6mm of external sheath layer external diameter, big specification capping, and small dimension takes off limit.B, extrude Stability Control: head is adorned 80 mesh filter screen 1-2 layers, and screw speed is controlled at 15-40r/min, and is unsuitable too fast.C, extrude temperature control: feeding section 130-145 ℃, melt zone 150-160 ℃, all press 165-175 ℃ of section, 165-175 ℃ on machine neck, head 165-175 ℃, die orifice 160-170 ℃.D, drying: before extruding, if the sheath material period of storage is long or when making moist, should carry out dried, baking temperature is 90-100 ℃, and be 2-4 hour drying time.
Extruding of cold resisting type fire-retardant chlorinated polyethylene external sheath layer at equipment: screw slenderness ratio is 17: 1 ￠ 90, ￠ 150 steam continuous vulcanization production lines.Extrude, a, die parameters require: adopt plsitive mold, it is identical that die parameters extrudes mould with other jacket rubber.B, extrude temperature control: feed opening: 35～45 ℃, fuselage: 45～55 ℃, head: 60～75 ℃, die orifice: 85～95 ℃.Screw rod: water flowing cooling.C, sulfuration process and speed control: steam pressure 1.0～1.3MPa goes out linear velocity: 15～20 meters/min.
The disclosed manufacturing approach of present embodiment; Through the anti-glide lamella of vertical bag between said conductor and said insulating barrier; Anti-glide lamella is a teflin tape; Make full use of self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of teflin tape, it is injury-free to have guaranteed that in the extruded insulation process anti-glide lamella can bear HTHP, guarantees relatively fully slippage between wind energy cable conductor and the insulation in actual use; And do not damage insulation during slippage, satisfy the low temperature resistant requirement of cable simultaneously.From above-mentioned disclosed embodiment, can find out that present embodiment is disclosed to be the manufacturing approach of non-shield type list core wind energy cable.
The invention also discloses the manufacturing approach of another kind of wind energy cable; See also accompanying drawing 5; Flow chart for the manufacturing approach of the disclosed another kind of wind energy cable of the embodiment of the invention; Said wind energy cable comprises: external sheath layer and three insulated wire cores, and said insulated wire cores comprises: conductor and insulating barrier, concrete steps are following:
Step 501: conductor manufacturing.
This step is identical with manufacturing approach and flow process among last a kind of method embodiment, just gives unnecessary details no longer in detail at this, and particular content sees also the corresponding content of a kind of method embodiment.
Step 502: vertical anti-glide lamella of bag and insulation extrude between said conductor and said insulating barrier.
This step is identical with manufacturing approach and flow process among last a kind of method embodiment, just gives unnecessary details no longer in detail at this, and particular content sees also the corresponding content of a kind of method embodiment.
Step 503: three insulated wire cores constitute cable core with the stranded stranding of reinforcement filled core, strengthen filled core and are arranged on cable core center clearance place.Band not when stranded stranding embeds stranding cable core outer rim gap when being convenient to inner restrictive coating or external sheath layer and extruding, so that the Stability Analysis of Structures in cable core of insulated wire cores, strengthens the anti-twisting property of cable.Said reinforcement filled core is made up of the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with the cable insulation same material, strengthens the pull resistance and the anti-twisting property of cable.
Step 504: carry out external sheath layer and extrude.
For extruding of external sheath layer, different according to cable use and product type, its material category is also different, and the external sheath layer of the flow process that extrudes and the same a kind of method embodiment of method extrudes similar.
The disclosed manufacturing approach of present embodiment; Through the anti-glide lamella of vertical bag between said conductor and said insulating barrier; Anti-glide lamella is a teflin tape, reaches the high temperature resistant and low temperature tolerance characteristics that strengthens wind energy cable, and in the extruded insulation process anti-glide lamella can to bear HTHP injury-free; Guarantee relatively fully slippage between wind energy cable conductor and the insulation in actual use; And do not damage during slippage on the basis of insulation, the reinforcement filled core be set in the cable core center clearance, enhancing further the pull resistance and the anti-twisting property of cable.
Present embodiment is an example with three insulated wire cores, but the invention is not restricted to three insulated wire cores.From above-mentioned disclosed embodiment, can find out that present embodiment is disclosed to be non-shield type multicore wind energy cable.
The manufacturing approach of above-mentioned two kinds of disclosed wind energy cables of embodiment; No matter be single core; Or the making flow process that all belongs to non-shield type wind energy cable of multicore, on the disclosed basis of the foregoing description, present embodiment discloses the manufacture method of another kind of wind energy cable; See also accompanying drawing 6, be the manufacturing approach flow chart of the disclosed another kind of wind energy cable of the embodiment of the invention; Concrete steps are following:
Step 601: conductor manufacturing.
This step is identical with manufacturing approach and flow process among last a kind of method embodiment, just gives unnecessary details no longer in detail at this, and particular content sees also the corresponding content of a kind of method embodiment.
Step 602: vertical anti-glide lamella of bag and insulation extrude between said conductor and said insulating barrier.
This step is identical with manufacturing approach and flow process among last a kind of method embodiment, just gives unnecessary details no longer in detail at this, and particular content sees also the corresponding content of a kind of method embodiment.
Step 603: three insulated wire cores constitute cable core with the stranded stranding of reinforcement filled core, strengthen filled core and are arranged on cable core center clearance place.Band not when stranded stranding embeds stranding cable core outer rim gap when being convenient to inner restrictive coating or external sheath layer and extruding, so that the Stability Analysis of Structures in cable core of insulated wire cores, strengthens the anti-twisting property of cable.Said reinforcement filled core is made up of the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with the cable insulation same material, strengthens the pull resistance and the anti-twisting property of cable.
Step 604: said cable core is carried out inner restrictive coating extrude, said inner restrictive coating is provided with woven shield outward, and said woven shield adopts zinc-plated or not tinned copper wire braiding, wrapped then anti-glide lamella.
Extrude for inner restrictive coating, adopt and external sheath layer identical materials and manufacturing technology.For screen braiding, adopt 24 ingot high-speed knitters, angle of weave is 45 ± 5 degree, lay of braiding≤30mm, count>=80%, and braid do not allow integral body to continue, and the braiding broken end and the joint that expose should be repaired smooth.Allow to change metal wire bar 1 time on per 1 meter length.Wrapped for anti-glide lamella, its wrapped equipment is selected the wrapped head of suitable cabler for use according to the size of braiding external diameter, and adopts the overlapping around-packing technology of individual layer, and the wrapped overlapping rate of putting up is not less than 20%.Wrapped anti-glide lamella should be smooth smooth, must not bottom pour ladle, big fold must not be arranged, and not influencing when the size of fold extrudes with external sheath layer is as the criterion through core rod smoothly gets final product.
Step 605: carry out external sheath layer and extrude.
For extruding of external sheath layer, different according to cable use and product type, its material category is also different, and the external sheath layer of the flow process that extrudes and the same a kind of method embodiment of method extrudes similar.
The disclosed manufacturing approach of present embodiment; The woven shield that is provided with can improve the shielding properties of wind energy cable effectively; In addition, wrapped anti-glide lamella between woven shield and external sheath layer further utilizes self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of polytetrafluoroethylene; It is injury-free to guarantee that in extruding the sheath process anti-glide lamella can bear HTHP; Guarantee wind energy cable relatively fully slippage between woven shield and the oversheath in actual use, and do not damage sheath during slippage, satisfy the low temperature resistant requirement of cable simultaneously.Present embodiment is an example with three insulated wire cores, but the invention is not restricted to three insulated wire cores.From above-mentioned disclosed embodiment, can find out that present embodiment is disclosed to be shield type multicore wind energy cable.
In sum:
A kind of wind energy cable disclosed by the invention and manufacturing approach thereof through adopting copper free wire and welding wire composite conductor, have strengthened the pull resistance and the anti-twisting property of cable.Through the anti-glide lamella of vertical bag between said conductor and said insulating barrier; Anti-glide lamella is a teflin tape; Make full use of self-lubricating, high strength, the high temperature resistant and low temperature tolerance characteristics of teflin tape, it is injury-free to have guaranteed that in the extruded insulation process anti-glide lamella can bear HTHP, guarantees relatively fully slippage between wind energy cable conductor and the insulation in actual use; And do not damage insulation during slippage, satisfy the low temperature resistant requirement of cable simultaneously.
In addition; For multicore cable, in the middle of cable core, the reinforcement filled core is set, also strengthened the pull resistance and the anti-twisting property of cable; Band not when stranded stranding; Embed stranding cable core outer rim gap when being convenient to inner restrictive coating or external sheath layer and extruding, so that the Stability Analysis of Structures in cable core of insulated wire cores, strengthen the anti-twisting property of cable.
At last; The anti-glide lamella of wrapped teflin tape between woven shield and external sheath layer; It is injury-free to have guaranteed that in extruding the sheath process anti-glide lamella can bear HTHP; Guarantee wind energy cable relatively fully slippage between woven shield and the external sheath layer in actual use, and do not damage external sheath layer during slippage.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. wind energy cable comprises: external sheath layer and at least one insulated wire cores, and said insulated wire cores comprises: conductor and insulating barrier, it is characterized in that,
Be provided with the anti-glide lamella of vertical bag between said conductor and the said insulating barrier, said anti-glide lamella is a teflin tape.
2. wind energy cable according to claim 1 is characterized in that said conductor comprises compound copper free wire and welding wire.
3. wind energy cable according to claim 1; It is characterized in that; When said wind energy cable is multicore; Be provided with the reinforcement filled core in said insulated wire cores center clearance, said reinforcement filled core is that the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with wind energy cable insulating barrier same material constitutes.
4. wind energy cable according to claim 3 is characterized in that, also comprises inner restrictive coating, between said inner restrictive coating and the external sheath layer woven shield is set, and is provided with wrapped anti-glide lamella between said woven shield and the said external sheath layer.
5. wind energy cable according to claim 4 is characterized in that, said woven shield is zinc-plated or the woven shield of tinned copper wire not.
6. the manufacturing approach of a wind energy cable, said wind energy cable comprises: external sheath layer and at least one insulated wire cores, said insulated wire cores comprises: conductor and insulating barrier is characterized in that this method comprises:
Conductor is made, and vertical anti-glide lamella of bag and insulation extrude between conductor and insulating barrier, and said anti-glide lamella is specially teflin tape, carries out external sheath layer then and extrudes.
7. want 6 described manufacturing approaches according to right; It is characterized in that; When said wind energy cable is multicore cable; Before said external sheath layer extrudes step, also comprise: with said insulated wire cores with strengthen filled core and carry out stranded stranding and constitute cable core, and when stranded stranding band not; Said reinforcement filled core is arranged on the center clearance of said cable core, and said reinforcement filled core is that the layer that extrudes that lace cord or steel wire rope or other reinforced fiber rope extrude with said wind energy cable insulating barrier same material constitutes.
8. manufacturing approach according to claim 7; It is characterized in that, when said wind energy cable is the shield type multicore cable, with said insulated wire cores and said reinforcement filled core are carried out stranded stranding step after; Also comprise: said cable core is carried out inner restrictive coating extrude; Said inner restrictive coating is provided with woven shield outward, and said woven shield adopts zinc-plated or not tinned copper wire braiding, wrapped then anti-glide lamella.
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| CN2012100668733A CN102568680A (en) | 2012-03-14 | 2012-03-14 | Wind energy cable and production method thereof |
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| CN110663092B (en) * | 2017-05-31 | 2021-04-23 | Ls电线有限公司 | Cable for robot |
| CN110277190A (en) * | 2019-06-27 | 2019-09-24 | 湖南华菱线缆股份有限公司 | A kind of mine photoelectricity is compound to slide cable with wear resistant corrosion resistant |
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Application publication date: 20120711 |