CN220962818U - Lightning-protection leading-in cable for high-strength wind power blade - Google Patents
Lightning-protection leading-in cable for high-strength wind power blade Download PDFInfo
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- CN220962818U CN220962818U CN202322398922.XU CN202322398922U CN220962818U CN 220962818 U CN220962818 U CN 220962818U CN 202322398922 U CN202322398922 U CN 202322398922U CN 220962818 U CN220962818 U CN 220962818U
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- cable
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- aluminum alloy
- wind power
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- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 230000017105 transposition Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 17
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 3
- 208000025274 Lightning injury Diseases 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Non-Insulated Conductors (AREA)
Abstract
The utility model discloses a lightning protection lead-in cable for a high-strength wind power blade, which comprises a cable main body, wherein the center of an aluminum alloy conductor adopts a round aluminum-clad steel wire, the pitch diameter of the twisting of an outer aluminum alloy round single wire is smaller than that of a conventional conductor, so that when the cable is stretched, bent, twisted and vibrated, the aluminum alloy single wire for bearing lightning stroke current is attached to the aluminum-clad steel wire at the center of the cable, the deformation of the conductor is counteracted by the elongation of a twisting structure, the internal stress of the single wire is extremely small, and the tension of the whole cable is transmitted to a cable terminal connector through the aluminum-clad steel wire, so that the breakage phenomenon of the conductor under severe working conditions is avoided. Meanwhile, the aluminum-clad steel wire is provided with an aluminum layer and aluminum alloy single wires stranded outside the aluminum layer, electrochemical corrosion cannot occur, and the service life of the cable is guaranteed.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a lightning protection leading cable for a high-strength wind power blade.
Background
The wind power blade lightning protection leading cable has the function of guiding lightning current from the blade lightning receiving device to the wind power generation equipment grounding system when the blades of the wind power generation equipment are struck by lightning, so that the lightning protection of the blades is realized. Early wind power blade lightning protection lead-in cables basically adopt copper core soft conductor insulated wires, and along with the consideration of pressure drop manufacturing cost, more and more blade manufacturers adopt aluminum alloy core conductor cables to replace copper core cables. Along with the increasing of the single power of the wind generating set, the length of the blade is increased, and the part close to the blade tip is subjected to wind shock vibration and repeated bending is more severe than the former working condition.
In recent years, the situation that single wire strand breakage in conductors and even complete breakage of conductors are caused by fatigue of aluminum alloy lightning protection lead-in cables in some blades occurs, which leads to the reduction and even failure of lightning protection performance of the blades, and possibly causes serious economic loss. Therefore, a lightning protection lead-in cable which can save cost and can remarkably improve the mechanical properties, particularly the fatigue resistance, of a conductor is needed.
Disclosure of utility model
The utility model aims to provide a lightning protection leading-in cable for a high-strength wind power blade, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a lightning protection of high strength wind-powered electricity generation blade draws and connects cable, includes the cable main part, the center department of cable main part has arranged aluminium package steel wire, the outside transposition of aluminium package steel wire has two-layer aluminium alloy wire hank layer, the surface cladding on aluminium alloy gold thread hank layer has around package Bao Daiceng, and the surface cladding around the band layer has the insulating layer, the surface cladding of insulating layer has the restrictive coating.
Preferably, the twisting directions of the two aluminum alloy wire twisting layers are opposite.
Preferably, the strap lap rate of the wrapping strap layer is not less than 15%, and the strap is made of a semiconductive nylon strap.
Preferably, the insulating layer material is ethylene propylene rubber.
Preferably, the sheath layer is made of flame-retardant ethylene propylene rubber.
Preferably, the twisting pitch diameter ratio of the aluminum alloy round single wire in the aluminum alloy wire twisting layer is not more than 12 times.
The beneficial effects of the utility model are as follows:
In the utility model, the center of the aluminum alloy conductor adopts a round aluminum-clad steel wire, the pitch diameter of the twisting of the outer aluminum alloy round single wire is smaller than that of a conventional conductor, so that when the cable is stretched, bent, twisted and vibrated, the aluminum alloy single wire for bearing lightning current is attached to the center of the aluminum-clad steel wire, the deformation of the conductor is counteracted by the elongation of the twisting structure, the internal stress born by the single wire is extremely small, and the tension born by the whole cable is transmitted to the cable terminal through the aluminum-clad steel wire, thereby avoiding the wire breakage phenomenon of the conductor under severe working conditions. Meanwhile, the outer layer of the aluminum-clad steel wire is an aluminum layer and aluminum alloy single wires stranded outside the aluminum-clad steel wire can not generate electrochemical corrosion, the service life of the cable is guaranteed, lightning current is complex high-frequency current, the lightning current in the center aluminum-clad steel wire is influenced by skin effect and can be ignored, so that the mechanical property of the cable can not be influenced by generated thermal effect, rubber elastomers are adopted for insulation and possible sheath materials of the cable, and when the cable is laid in a blade production process, the cable can be quickly straightened from a looping state by means of self elasticity, so that the operation is convenient.
Drawings
FIG. 1 is a main structure schematic diagram of a lightning protection lead-in cable for a high-strength wind power blade;
fig. 2 is a schematic diagram of a cable structure of a lightning protection lead-in cable for a high-strength wind power blade.
In the figure: 1. a cable body; 2. an aluminum-clad steel wire; 3. an aluminum alloy wire stranded layer; 4. wrapping Bao Daiceng; 5. an insulating layer; 6. and a sheath layer.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-2, a lightning protection lead-in cable for a high-strength wind power blade comprises a cable main body 1, wherein an aluminum-clad steel wire 2 is arranged at the center of the cable main body 1, two layers of aluminum alloy wire stranded layers 3 are stranded on the outer sides of the aluminum-clad steel wire 2, wrapping tape layers 4 are wrapped on the outer surfaces of the aluminum alloy gold wire stranded layers, an insulating layer 5 is wrapped on the outer surfaces of the wrapping tape layers 4, and a sheath layer 6 is wrapped on the outer surfaces of the insulating layer 5.
The center of the aluminum alloy conductor adopts a round aluminum-clad steel wire 2, the pitch diameter of the twisting of the outer aluminum alloy round single wire is smaller than that of a conventional conductor, so that when the cable is stretched, bent, twisted and vibrated, the aluminum alloy single wire for bearing lightning current is attached to the center of the aluminum-clad steel wire 2, the deformation of the conductor is counteracted by the elongation of the twisting structure, the internal stress of the single wire is extremely small, and the tension of the whole cable is transmitted to a cable terminal connector through the aluminum-clad steel wire 2, so that the phenomenon of wire breakage of the conductor under severe working conditions is avoided. Meanwhile, the outer layer of the aluminum-clad steel wire 2 is an aluminum layer, and the aluminum alloy single wires stranded outside the aluminum-clad steel wire cannot be subjected to electrochemical corrosion, so that the service life of the cable is ensured. The lightning current is a complex high-frequency current, and is influenced by skin effect, the current in the central aluminum-clad steel wire 2 is negligible, so that the mechanical properties of the central aluminum-clad steel wire are not influenced by the generated thermal effect. The insulating and possible sheath materials of the cable all adopt rubber elastomer, and when the cable is laid in the blade production process, the cable can be rapidly straightened from the looping state by depending on the elasticity of the cable, so that the operation is convenient.
Specifically, in this embodiment, the twisting directions of the two aluminum alloy wire twisting layers 3 are opposite.
Specifically, in this embodiment, the strap lap rate of the wrapping strap layer 4 is not less than 15%, and the strap is made of a semiconductive nylon strap.
Specifically, in this embodiment, the insulating layer 5 is made of ethylene propylene rubber.
Specifically, in this embodiment, the material of the sheath layer 6 is ethylene propylene rubber with flame retardance.
Specifically, in this embodiment, the ratio of the twisted pitch diameters of the aluminum alloy round single wires in the aluminum alloy wire twisted layer 3 is not more than 12 times.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a lightning protection of high strength wind-powered electricity generation blade draws and connects cable, its characterized in that, includes the cable main part, the center department of cable main part has arranged aluminium package steel wire, the outside transposition of aluminium package steel wire has two-layer aluminium alloy wire hank layer, the surface cladding of aluminium alloy wire hank layer has around package Bao Daiceng, and the surface cladding of around the package band layer has the insulating layer, the surface cladding of insulating layer has the restrictive coating.
2. The lightning protection lead-through cable of high-strength wind power blades according to claim 1, wherein the twisting directions of the two aluminum alloy wire twisting layers are opposite.
3. The lightning protection lead-in cable of the high-strength wind power blade according to claim 1, wherein: the strap lap rate of the wrapping strap layer is not less than 15%, and the strap is made of semi-conductive nylon strap.
4. The lightning protection lead-in cable of the high-strength wind power blade according to claim 1, wherein: the insulating layer is made of ethylene propylene rubber.
5. The lightning protection lead-in cable of the high-strength wind power blade according to claim 1, wherein: the sheath layer is made of flame-retardant ethylene propylene rubber.
6. The lightning protection lead-in cable of the high-strength wind power blade according to claim 1, wherein: the twisting pitch diameter ratio of the aluminum alloy round single wires in the aluminum alloy wire twisting layer is not more than 12 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322398922.XU CN220962818U (en) | 2023-09-04 | 2023-09-04 | Lightning-protection leading-in cable for high-strength wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322398922.XU CN220962818U (en) | 2023-09-04 | 2023-09-04 | Lightning-protection leading-in cable for high-strength wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220962818U true CN220962818U (en) | 2024-05-14 |
Family
ID=90977423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322398922.XU Active CN220962818U (en) | 2023-09-04 | 2023-09-04 | Lightning-protection leading-in cable for high-strength wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220962818U (en) |
-
2023
- 2023-09-04 CN CN202322398922.XU patent/CN220962818U/en active Active
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