CN210006487U - copper core polyvinyl chloride insulated cable - Google Patents
copper core polyvinyl chloride insulated cable Download PDFInfo
- Publication number
- CN210006487U CN210006487U CN201921247292.3U CN201921247292U CN210006487U CN 210006487 U CN210006487 U CN 210006487U CN 201921247292 U CN201921247292 U CN 201921247292U CN 210006487 U CN210006487 U CN 210006487U
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- Prior art keywords
- layer
- polyvinyl chloride
- outside
- copper
- heat
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 65
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 230000017525 heat dissipation Effects 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000741 silica gel Substances 0.000 claims abstract description 20
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 17
- 239000005030 aluminium foil Substances 0.000 claims abstract description 13
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 139
- 239000003063 flame retardant Substances 0.000 claims description 27
- 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 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- 239000011888 foil Substances 0.000 claims description 15
- 229920000098 polyolefin Polymers 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims description 9
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- -1 graphite alkene Chemical class 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 6
- 229920002379 silicone rubber Polymers 0.000 claims 3
- 239000004945 silicone rubber Substances 0.000 claims 3
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000011247 coating layer Substances 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses an copper core polyvinyl chloride insulated cable, concretely relates to cable field, including the copper core, the outside parcel of copper core has the insulating layer, the insulating layer outside is equipped with the filler, the outside parcel of filler has the non-woven fabrics, the non-woven fabrics outside is equipped with the heat-sink shell, the heat-sink shell includes the low pressure polyvinyl chloride layer, the outside parcel of low pressure polyvinyl chloride layer has the aluminium foil, the aluminium foil inside and outside all is equipped with heat dissipation silica gel the utility model discloses a set up the polyvinyl chloride insulating layer in the copper core outside, make it have excellent insulating properties and dielectric property, can effectively isolate high-tension current's hourglass, prevent to puncture the insulating layer, set up three copper core simultaneously at cable insides, very big improvement the conveying efficiency of electric energy, through the nature of low pressure polyvinyl chloride high specific heat capacity, can make its heat absorption but the temperature rise slowly, at low pressure polyvinyl chloride layer outside parcel and heat dissipation silica gel simultaneously, strengthened the heat conductivility.
Description
Technical Field
The utility model relates to the technical field of cables, more specifically say, the utility model relates to an kind copper core polyvinyl chloride insulated cable.
Background
With the development of society, the demand for electricity of people is getting bigger and bigger, and the amount of electricity used for life and production is increasing rapidly, so more power stations need to be built, and the power stations also need to build larger installed capacity to meet normal electricity consumption, and the power in the power stations needs to be transmitted to thousands of households, so that electric energy needs to be transmitted by cables. The cable can be divided into underground cables, overhead cables and submarine cables according to different erection positions, the environmental influence factors are more, and meanwhile, the high-voltage power is transmitted, so that the manufacturing requirement is high, and a multilayer protection structure is adopted more.
However, the existing cable still has more defects in actual use, for example, when electric energy is transmitted, the used insulating layer is easily punctured by high voltage electricity, the insulating effect is lost, and meanwhile, because the transmission conductor has resistance, heat can be generated, and the heat is easily accumulated in the cable with a multilayer structure, so that fire danger is caused.
Therefore, it is necessary to invent copper-core polyvinyl chloride insulated cables to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides kinds of copper core polyvinyl chloride insulated cable, through set up the polyvinyl chloride insulating layer in the copper core outside, make it have excellent insulating properties and dielectric property, can effectively completely cut off high tension current's hourglass, prevent to puncture the insulating layer, simultaneously at inside three copper core that sets up of cable, very big improvement the conveying efficiency of electric energy, through the nature of the high specific heat capacity of low pressure polyvinyl chloride, can make its absorbed heat but the temperature slowly that rises, wrap up aluminium foil and heat dissipation silica gel outside low pressure polyvinyl chloride layer simultaneously, reinforcing heat conductivility, be favorable to the outside transmission of heat.
In order to realize the purpose, the utility model provides a kinds of copper core polyvinyl chloride insulated cable, including the copper core, copper core outside parcel has the insulating layer, the insulating layer outside is equipped with the filler, filler outside parcel has the non-woven fabrics, the non-woven fabrics outside is equipped with the heat-sink shell, the heat-sink shell includes low pressure polyvinyl chloride layer, low pressure polyvinyl chloride layer outside parcel has the aluminium foil, the aluminium foil inside and outside all is equipped with heat dissipation silica gel, the heat-sink shell outside parcel has fire-retardant layer, fire-retardant layer is including porcelainizing polyolefin and metal mesh, fire-retardant layer outside parcel has the back up coat, the back up coat outside is equipped with the electrostatic film, the electrostatic film outside is equipped with the protective layer, the protective layer includes butyronitrile polyvinyl chloride layer, butyronitrile polyvinyl chloride surface is equipped with fire prevention coating layer, fire prevention coating layer surface is equipped with graphite alkene.
In preferred embodiments, the insulating layer is made of a polyvinyl chloride material.
In preferred embodiments, the copper core is formed by twisting a plurality of copper wires, and the number of the copper cores is set to three.
In preferred embodiments, the filler is an aluminum-plastic panel filler.
In preferred embodiments, the aluminium foil multilayer is evenly wrapped up in low pressure polyvinyl chloride layer outside, heat dissipation silica gel is equipped with two-layerly, layer heat dissipation silica gel is established between low pressure polyvinyl chloride and aluminium foil, layer in addition heat dissipation silica gel is established at the aluminium foil outsidely.
In preferred embodiments, the flame retardant layer is provided with a plurality of fine through holes, the ceramicized polyolefin is provided with two layers, a metal mesh is arranged between the two layers of ceramicized polyolefin, the surface of the outer layer ceramicized polyolefin is provided with the metal mesh, and the mesh of the metal mesh is smaller than the size of the through holes.
In preferred embodiments, the reinforcing layer is formed by steel wire twisting.
In preferred embodiments, the fireproof coating layer is uniformly coated with fireproof coating, and the graphene heat dissipation coating layer is uniformly coated with graphene heat dissipation coating.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a set up the polyvinyl chloride insulating layer outside the copper core, make it have excellent insulating properties and dielectric property, can effectively isolate the outer hourglass of high-tension current, prevent to puncture the insulating layer, set up three copper cores in cables simultaneously, very big improvement the transmission efficiency of electric energy, through the nature of the high specific heat capacity of low pressure polyvinyl chloride, can make it absorb the heat but the temperature rises slowly, wrap up aluminium foil and heat dissipation silica gel outside the low pressure polyvinyl chloride layer simultaneously, strengthen the heat-conducting ability, be favorable to the heat outwards to transmit;
2. through setting up fire-retardant layer, can ensure that the cable can not whole burning, cause loss and danger to enlarge the ization, evenly set up a plurality of through-holes simultaneously on fire-retardant layer, can assist the heat-sink shell heat dissipation, through setting up the metal mesh, guaranteed that the burning things which may cause a fire disaster can not follow the through-hole and pass through, through setting up the back up coat in fire-retardant layer outside, the effectual intensity of guaranteeing the cable, and the back up coat is formed by steel wire hank winding, can play shielding electric field's effect again, through setting up the static membrane in the back up coat outside, can effectively get rid of the static problem, through setting up butyronitrile polyvinyl chloride layer, the tear resistance and the wearability and the impact strength of improvement protective layer, thereby.
Drawings
Fig. 1 is an overall sectional view of the present invention.
Fig. 2 is a longitudinal sectional view of the present invention.
Fig. 3 is a schematic structural view of the heat absorbing layer of the present invention.
Fig. 4 is a schematic view of the structure of the flame retardant layer of the present invention.
Fig. 5 is a schematic diagram of the protective layer structure of the present invention.
The reference signs are: 1 copper core, 2 insulating layers, 3 fillers, 4 non-woven fabrics, 5 heat absorbing layers, 501 low-pressure polyvinyl chloride layers, 502 aluminum foils, 503 heat dissipation silica gel, 6 flame-retardant layers, 601 ceramic polyolefin, 602 metal nets, 603 through holes, 7 reinforcing layers, 8 electrostatic films, 9 protective layers, 901 butyronitrile polyvinyl chloride layers, 902 fireproof coating layers and 903 graphene heat dissipation coating layers.
Detailed Description
The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of , but not all embodiments.
The utility model provides an copper core polyvinyl chloride insulated cable that fig. 1-5 show, including copper core 1, copper core 1 outside parcel has insulating layer 2, insulating layer 2 outside is equipped with filler 3, filler 3 outside parcel has non-woven fabrics 4, non-woven fabrics 4 outside is equipped with heat-sink shell 5, heat-sink shell 5 includes low pressure polyvinyl chloride layer 501, low pressure polyvinyl chloride layer 501 outside parcel has aluminium foil 502, the aluminium foil 502 inside and outside all is equipped with heat dissipation silica gel 503, heat-sink shell 5 outside parcel has flame retardant coating 6, flame retardant coating 6 includes ceramic polyolefin 601 and metal mesh 602, flame retardant coating 6 outside parcel has reinforcing layer 7, reinforcing layer 7 outside is equipped with electrostatic film 8, electrostatic film 8 outside is equipped with protective layer 9, protective layer 9 includes butyronitrile polyvinyl chloride layer 901, butyronitrile polyvinyl chloride 901 surface is equipped with fire prevention coating layer 902, fire prevention coating 902 surface is equipped with graphite alkene heat dissipation coating layer 903;
the implementation mode specifically includes twisting a plurality of copper wires to form thicker copper cores 1, wrapping polyvinyl chloride layers outside the copper cores 1 to achieve insulation effects, placing three copper cores 1 wrapped with insulation layers 2 at to form multi-channel power transmission lines, filling aluminum plastic plate fillers among the copper cores 1 to avoid cavities, wrapping non-woven fabrics 4 to enable the whole filling surface to be smooth, wrapping heat absorption layers 5, wherein each heat absorption layer is composed of a low-voltage polyvinyl chloride layer 501, an aluminum foil 502 and heat dissipation silica gel 503, enabling the specific heat capacity of the low-voltage polyvinyl chloride layer 501 to be high, and enabling the low-voltage polyvinyl chloride layer to be tightly attached to the non-woven fabrics to effectively absorb heat transferred from the copper cores 1, but the temperature of the low-voltage polyvinyl chloride layer is not greatly increased, so that the temperature control is achieved, wrapping the aluminum foil 502 on the low-voltage polyvinyl chloride layer 502 in multiple layers, filling the heat dissipation silica gel 503 between the low-voltage polyvinyl chloride layer 501 and the aluminum foil 502 in multiple layers, and wrapping the aluminum foil 502 with the heat dissipation silica gel 503 to ensure that the heat dissipation layer is connected with the outermost layer 3929 and the heat dissipation layer 46 layer to form a normal heat transfer structure.
The insulating layer 2 is made of polyvinyl chloride material;
the copper core 1 is formed by twisting a plurality of copper wires, and the number of the copper cores 1 is three;
the filler 3 is an aluminum-plastic plate filler;
the aluminum foil 502 is uniformly wrapped outside the low-pressure polyvinyl chloride layer 501 in multiple layers, the heat-dissipation silica gel 503 is provided with two layers, layers of the heat-dissipation silica gel 503 are arranged between the low-pressure polyvinyl chloride layer 501 and the aluminum foil 502, and layers of the heat-dissipation silica gel 503 are arranged outside the aluminum foil 502;
the flame-retardant layer 6 is provided with a plurality of fine through holes 603, the ceramic polyolefin 601 is provided with two layers, a metal net 602 is arranged between the two layers of the ceramic polyolefin 601, the surface of the outer layer of the ceramic polyolefin 601 is provided with the metal net 602, and the meshes of the metal net 602 are smaller than the size of the through holes 603;
the reinforcing layer 7 is formed by twisting steel wires;
the fireproof coating layer 902 is uniformly coated with fireproof coating, and the graphene heat dissipation coating layer 903 is uniformly coated with graphene heat dissipation coating;
the embodiment specifically comprises that a flame-retardant layer 6 is composed of two layers of ceramic polyolefin 601 and two layers of metal nets 602, layers of flame-retardant layer 6 are wrapped outside a heat-absorbing layer 5, so that the danger of cable fire is prevented, the phenomenon that a cable is damaged due to fire to cause the breakdown of a power transmission line is avoided, channels are formed between the flame-retardant layer 6 and the heat-absorbing layer 5 and lead to the outer layer, channels are formed between the flame-retardant layer 6 and the outer layer, larger heat dissipation effects are achieved, the metal nets 602 have the function of shielding fire sources from running through the through holes, then a reinforcing layer 7 is wrapped outside the flame-retardant layer 6 to provide high-strength structures for the cable, so that the cable is not easy to break, electrostatic layers 8 are wrapped outside the reinforcing layer 7 to prevent adverse effects caused by static electricity, finally protective layers 9 are wrapped outside the electrostatic layers 8, the protective layers are composed of a butyronitrile polyvinyl chloride layer 901, a fireproof 902 and a graphene heat dissipation coating layer 903, protections are formed inside the cable, so that the cable is not easy to damage.
The utility model discloses the theory of operation:
referring to the attached drawings 1-3 of the specification, a plurality of copper wires are twisted to form thicker copper cores 1, then a polyvinyl chloride layer is wrapped outside the copper cores 1 to achieve insulation effects, then three copper cores 1 wrapped with insulation layers 2 are placed at to form multi-channel power transmission lines, aluminum plastic plate fillers are used for filling among the copper cores 1 to avoid cavities, then non-woven fabrics 4 are wrapped to enable the whole filling surface to be smooth, then a heat absorption layer 5 is wrapped, the heat absorption layer is composed of a low-voltage polyvinyl chloride layer 501, an aluminum foil 502 and heat dissipation silica gel 503, the specific heat capacity of the low-voltage polyvinyl chloride layer 501 is high, the low-voltage polyvinyl chloride layer is arranged to be close to the non-woven fabrics to effectively absorb heat transferred from the copper cores 1, the temperature rise amplitude of the low-voltage polyvinyl chloride layer cannot be large, the temperature control purpose is achieved, the aluminum foil 502 is wrapped on the low-voltage polyvinyl chloride layer 502 in multiple layers, the heat dissipation silica gel 503 is filled between the low-voltage polyvinyl chloride layer 502, the aluminum foil 502 and the heat dissipation silica gel 503 are utilized to transfer heat to the outside, the aluminum foil 502 is wrapped on 56, the outermost layer, the heat dissipation layer is connected with 3929, and the heat dissipation;
referring to the attached drawings 1,2,4 and 5 of the specification, the flame retardant layer 6 is composed of two layers of ceramic polyolefin 601 and two layers of metal nets 602, layers of flame retardant layers 6 are wrapped outside the heat absorbing layer 5, so that the danger of cable fire is prevented, the phenomenon that the cable is damaged due to fire causes and the power transmission line is paralyzed is avoided, channels are formed between the flame retardant layer 6 and the heat absorbing layer 5 and lead to the outer layer, matches are formed between the flame retardant layer and the heat absorbing layer, larger heat dissipation effects are achieved, the metal nets 602 have the function of shielding fire sources from running through the through holes, then a reinforcing layer 7 is wrapped outside the flame retardant layer 6 to provide high-strength structures for the cable, the cable is not easy to damage and break, electrostatic layers 8 are wrapped outside the reinforcing layer 7 to prevent adverse effects caused by electrostatic, finally protective layers 9 are wrapped outside the electrostatic layer 8, the protective layers are composed of a butyronitrile ethylene layer 901, a fireproof coating layer 902 and a graphene heat dissipation coating layer 903, protection is formed inside the cable, and the service time limit of the cable is increased.
First, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood as meaning either mechanically or electrically connected, or communication between two elements, or directly connected, and "up," "down," "left," and "right" are used only to indicate relative positional relationships, and when the absolute position of the object to be described changes, the relative positional relationships may change;
secondly, in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and under the condition of no conflict, the disclosed embodiment can be combined with embodiment and different embodiments;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
- The utility model provides a copper core polyvinyl chloride insulated cable, including copper core (1), its characterized in that copper core (1) outside parcel has insulating layer (2), insulating layer (2) outside is equipped with filler (3), filler (3) outside parcel has non-woven fabrics (4), non-woven fabrics (4) outside is equipped with heat-sink shell (5), heat-sink shell (5) are including low pressure polyvinyl chloride layer (501), low pressure polyvinyl chloride layer (501) outside parcel has aluminium foil (502), aluminium foil (502) inside and outside all is equipped with heat dissipation silica gel (503), heat-sink shell (5) outside parcel has fire-retardant layer (6), fire-retardant layer (6) are including ceramic polyolefin (601) and metal mesh (602), fire-retardant layer (6) outside parcel has back up coat (7), back up coat (7) outside is equipped with electrostatic film (8), electrostatic film (8) outside is equipped with protective layer (9), protective layer (9) are including butyronitrile polyvinyl chloride layer (901), butyronitrile layer (901) surface is equipped with fireproof paint layer (902), graphite alkene layer (902) surface is equipped with fireproof paint layer (903).
- 2. copper-cored polyvinyl chloride insulated cable according to claim 1, characterized in that the insulation layer (2) is made of polyvinyl chloride material.
- 3. The kinds of copper-core polyvinyl chloride insulated cable according to claim 1, wherein the copper core (1) is formed by twisting a plurality of copper wires, and the number of the copper cores (1) is three.
- 4. The kinds of copper-core polyvinyl chloride insulated cable according to claim 1, wherein the filler (3) is an aluminum-plastic plate filler.
- 5. The copper core polyvinyl chloride insulated cable of claim 1, wherein the aluminum foil (502) is wrapped with multiple layers of low voltage polyvinyl chloride layer (501), the heat dissipation silicone rubber (503) has two layers, layers of the heat dissipation silicone rubber (503) are disposed between the low voltage polyvinyl chloride layer (501) and the aluminum foil (502), and layers of the heat dissipation silicone rubber (503) are disposed at the outermost portion of the aluminum foil (502).
- 6. The copper-core polyvinyl chloride insulated cable according to claim 1, wherein the flame retardant layer (6) has a plurality of fine through holes (603), the ceramicized polyolefin (601) has two layers, a metal mesh (602) is disposed between the two layers of ceramicized polyolefin (601), the surface of the ceramicized polyolefin (601) at the outer layer has a metal mesh (602), and the mesh of the metal mesh (602) is smaller than the size of the through holes (603).
- 7. The kinds of copper-core polyvinyl chloride insulated cable according to claim 1, wherein the reinforcing layer (7) is formed by twisting steel wires.
- 8. The copper-core polyvinyl chloride insulated cable according to claim 1, wherein the fireproof paint layer (902) is uniformly coated with fireproof paint, and the graphene heat dissipation paint layer (903) is uniformly coated with graphene heat dissipation paint.
Priority Applications (1)
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CN201921247292.3U CN210006487U (en) | 2019-08-05 | 2019-08-05 | copper core polyvinyl chloride insulated cable |
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CN201921247292.3U CN210006487U (en) | 2019-08-05 | 2019-08-05 | copper core polyvinyl chloride insulated cable |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113871087A (en) * | 2021-10-20 | 2021-12-31 | 安徽天康集团数据线缆有限公司 | Special shielding type data cable for wind power generation |
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2019
- 2019-08-05 CN CN201921247292.3U patent/CN210006487U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113871087A (en) * | 2021-10-20 | 2021-12-31 | 安徽天康集团数据线缆有限公司 | Special shielding type data cable for wind power generation |
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Granted publication date: 20200131 |