CN113689980B - Hollow expanded high-voltage wire - Google Patents
Hollow expanded high-voltage wire Download PDFInfo
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- CN113689980B CN113689980B CN202110901801.5A CN202110901801A CN113689980B CN 113689980 B CN113689980 B CN 113689980B CN 202110901801 A CN202110901801 A CN 202110901801A CN 113689980 B CN113689980 B CN 113689980B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/181—Protections not provided for in groups H01B7/182 - H01B7/26 composed of beads or rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/428—Heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The invention discloses a hollow expanded high-voltage wire, which comprises an inner reinforcing ring, an inner reinforcing layer, an inner composite aluminum core layer and an outer composite aluminum core layer, wherein the inner reinforcing layer comprises a composite reinforcing core and a single-wire aluminum core, the composite reinforcing core and the single-wire aluminum core are arranged in a staggered mode, the composite reinforcing core and the single-wire aluminum core are twisted around the outside of the inner reinforcing ring, the inner composite aluminum core layer is positioned between the inner reinforcing layer and the outer composite aluminum core layer, and the inner composite aluminum core layer is twisted around the outside of the inner reinforcing layer. The inner reinforcing ring consists of the inner ring body and the outer ring body, and the inner ring body and the outer ring body are made of long glass fiber reinforced PP materials, so that the inner ring body and the outer ring body are high in strength and light in weight, meanwhile, the reinforcing ribs are arranged between the inner ring body and the outer ring body, the reinforcing ribs can be utilized to mutually support the inner ring body and the outer ring body, the integral compression resistance of the reinforcing ring is improved, the integral compression resistance effect of the hollow expanded high-voltage wire is improved, and the hollow expanded high-voltage wire is convenient to use.
Description
Technical Field
The invention relates to the technical field related to high-voltage wires, in particular to a hollow expanded high-voltage wire.
Background
The expanded high-voltage wire can be used in an extra-high voltage transmission line, and the sectional area of the wire is reduced on the premise of ensuring the outer diameter of the wire required by corona, so that the total weight of the wire is reduced, the load and the structural weight of an iron tower are reduced, and the manufacturing cost of the line can be greatly reduced.
The existing hollow expanded high-voltage wire is mainly made of metal materials and has high weight in order to increase the overall strength, so that the overall weight of the expanded high-voltage wire is increased, the use is inconvenient, the existing hollow expanded high-voltage wire is poor in overall compression resistance and strength, and the overall high-temperature resistance and corrosion resistance are poor, so that improvement is needed.
Disclosure of Invention
The invention aims to provide a hollow expanded high-voltage wire, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a hollow expanded high-voltage wire, includes interior strengthening ring, interior enhancement layer, interior compound aluminium sandwich layer and outer compound aluminium sandwich layer, interior enhancement layer includes compound enhancement core and single line aluminium core, compound enhancement core and the crisscross setting of single line aluminium core, and compound enhancement core and single line aluminium core hank are around setting up including the strengthening ring outside, interior compound aluminium sandwich layer is located between interior enhancement layer and the outer compound aluminium sandwich layer, interior compound aluminium sandwich layer hank is around setting up including the enhancement layer outside, outer compound aluminium sandwich layer hank is around setting up including on the compound aluminium sandwich layer.
As a further preferred aspect of the present invention: the inner reinforcing ring comprises an inner ring body and an outer ring body, and the inner ring body and the outer ring body are made of long glass fiber reinforced PP materials.
As a further preferred aspect of the present invention: the reinforcing ribs are arranged between the inner ring body and the outer ring body and are arranged in a V shape, and two ends of each reinforcing rib are fixedly connected with the outer wall of the inner ring body and the inner wall of the outer ring body respectively.
As a further preferred aspect of the present invention: the composite reinforcing core comprises a carbon fiber composite inner core, and the carbon fiber composite inner core is formed by stranding a plurality of carbon fiber filaments and aluminum-based fiber filaments.
As a further preferred aspect of the present invention: the outer ring of the carbon fiber composite inner core is provided with a protective sleeve, and the outer part of the protective sleeve is sleeved with a hard plastic sleeve.
As a further preferred aspect of the present invention: the inner composite aluminum core layer comprises a plurality of inner composite aluminum core wires, the composite aluminum core comprises an inner aluminum core, a heat conducting film and a glass fiber resin layer, the heat conducting film is annularly arranged outside the inner aluminum core, and heat conducting silica gel particles are filled between the heat conducting film and the glass fiber resin layer.
As a further preferred aspect of the present invention: the outer composite aluminum core layer comprises a plurality of outer composite aluminum core wires, the outer composite aluminum core comprises an outer aluminum core, an aluminum foil protective layer, a perchloroethylene resin anti-corrosion coating and a nano ceramic wear-resistant coating, the aluminum foil protective layer is arranged on the surface of the outer aluminum core in a surrounding mode, the perchloroethylene resin anti-corrosion coating is coated on the surface of the aluminum foil protective layer, and the nano ceramic wear-resistant coating is coated on the surface of the perchloroethylene resin anti-corrosion coating.
The invention provides a hollow expanded high-voltage wire, which has the following beneficial effects:
(1) The inner reinforcing ring consists of the inner ring body and the outer ring body, and the inner ring body and the outer ring body are made of long glass fiber reinforced PP materials, so that the inner ring body and the outer ring body are high in strength and light in weight, meanwhile, the reinforcing ribs are arranged between the inner ring body and the outer ring body, the reinforcing ribs can be utilized to mutually support the inner ring body and the outer ring body, the integral compression resistance of the reinforcing ring is improved, the integral compression resistance effect of the hollow expanded high-voltage wire is improved, and the hollow expanded high-voltage wire is convenient to use.
(2) The invention can improve the strength of the inner reinforcing layer by arranging the composite reinforcing core and arranging the composite reinforcing core on the inner reinforcing layer, and can improve the strength of the middle part of the hollow expanded high-voltage wire by arranging the heat conducting film, the heat conducting silica gel particles and the glass fiber resin layer on the inner composite aluminum core layer, thereby improving the integral strength and the compression resistance of the hollow expanded high-voltage wire, and simultaneously having good high-temperature resistance effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a composite reinforcing core structure according to the present invention;
FIG. 3 is a block diagram of an inner composite aluminum core wire of the present invention;
FIG. 4 is a schematic view of the structure of the outer composite aluminum core wire of the present invention.
In the figure: 1. an inner reinforcing ring; 2. an inner reinforcing layer; 3. an inner composite aluminum core layer; 4. an outer composite aluminum core layer; 5. an inner ring body; 6. reinforcing ribs; 7. an outer ring body; 8. a composite reinforcing core; 9. a hard plastic sleeve; 10. a protective sleeve; 11. a carbon fiber composite inner core; 12. thermally conductive silica gel particles; 13. a glass fiber resin layer; 14. an inner aluminum core; 15. a heat conductive film; 16. a perchloroethylene resin anticorrosive coating; 17. an aluminum foil protective layer; 18. an outer aluminum core; 19. a nano ceramic wear-resistant coating; 20. single wire aluminum core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-4, the present invention provides a technical solution: the utility model provides a hollow expanded high-voltage wire, including interior strengthening ring 1, interior enhancement layer 2, interior compound aluminium sandwich layer 3 and outer compound aluminium sandwich layer 4, interior enhancement layer 2 includes compound enhancement core 8 and single line aluminium core 20, compound enhancement core 8 and the crisscross setting of single line aluminium core 20, and compound enhancement core 8 and single line aluminium core 20 hank wind the setting in the outside of strengthening ring 1, interior compound aluminium sandwich layer 3 is located between interior enhancement layer 2 and the outer compound aluminium sandwich layer 4, interior compound aluminium sandwich layer 3 hank wind the setting in the outside of enhancement layer 2, outer compound aluminium sandwich layer 4 hank wind the setting in on compound aluminium sandwich layer 3.
In this embodiment, specific: the inner reinforcing ring 1 comprises an inner ring body 5 and an outer ring body 7, the inner ring body 5 and the outer ring body 7 are made of long glass fiber reinforced PP materials, the strength of the inner ring body 5 and the outer ring body 7 can be effectively increased by using the long glass fiber reinforced PP materials for the inner ring body 5 and the outer ring body 7, and meanwhile, the weight of the inner reinforcing ring 1 can be reduced, so that the weight of the hollow expanded high-voltage wire can be reduced, and the hollow expanded high-voltage wire is light.
In this embodiment, specific: be equipped with strengthening rib 6 between interior ring body 5 and the outer ring body 7, strengthening rib 6 is "V" font arrangement setting, and strengthening rib 6 both ends respectively with interior ring body 5 outer wall and outer ring body 7 inner wall fixed connection, through being equipped with strengthening rib 6 between interior ring body 5 and outer ring body 7, can utilize strengthening rib 6 to support each other interior ring body 5 and outer ring body 7, improve interior strengthening ring 1 holistic intensity and crushing resistance.
In this embodiment, specific: the composite reinforced core 8 comprises a carbon fiber composite inner core 11, and the carbon fiber composite inner core 11 is formed by stranding a plurality of carbon fiber wires and aluminum-based fiber wires, so that the integral strength of the composite reinforced core 8 can be effectively improved.
In this embodiment, specific: the outer ring of the carbon fiber composite inner core 11 is provided with the protective sleeve 10, the outer sleeve of the protective sleeve 10 is provided with the hard plastic sleeve 9, the hard plastic sleeve 9 can be utilized to protect the composite reinforced core 8, the structural stability of the composite reinforced core 8 is improved, the self-supporting effect is good, and the weight is light.
In this embodiment, specific: the inner composite aluminum core layer 3 comprises a plurality of inner composite aluminum core wires, the composite aluminum core wires comprise an inner aluminum core 14, a heat conducting film 15 and a glass fiber resin layer 13, the heat conducting film 15 is annularly arranged outside the inner aluminum core 14, heat conducting silica gel particles 12 are filled between the heat conducting film 15 and the glass fiber resin layer 13, heat on the inner aluminum core 14 can be emitted through the heat conducting film 15 and the heat conducting silica gel particles 12, the high temperature resistant effect of the hollow expanded high-voltage wire is improved, and the heat conducting silica gel particles 12 are filled between the heat conducting film 15 and the glass fiber resin layer 13, so that the pressure can be buffered by the heat conducting silica gel particles 12, and the overall compression resistance and strength of the hollow expanded high-voltage wire are further improved.
In this embodiment, specific: the outer composite aluminum core layer 4 comprises a plurality of outer composite aluminum core wires, the outer composite aluminum core wires comprise an outer aluminum core 18, an aluminum foil protective layer 17, a perchloroethylene resin anticorrosive coating 16 and a nano ceramic wear-resistant coating 19, the aluminum foil protective layer 17 is arranged on the surface of the outer aluminum core 18 in a surrounding mode, the perchloroethylene resin anticorrosive coating 16 is coated on the surface of the aluminum foil protective layer 17, the nano ceramic wear-resistant coating 19 is coated on the surface of the perchloroethylene resin anticorrosive coating 16, the overall anticorrosive effect of the expanded high-voltage wire can be improved by arranging the perchloroethylene resin anticorrosive coating 16, and the whole expanded high-voltage wire can be further protected by arranging the nano ceramic wear-resistant coating 19 on the surface of the perchloroethylene resin anticorrosive coating 16, so that abrasion is reduced, and the service life of the expanded high-voltage wire is prolonged.
It should be noted that, a hollow expanded high-voltage wire, at the during operation, through all adopting long glass fiber reinforced PP material with interior ring body 5 and outer ring body 7, can effectively increase the intensity of interior ring body 5 and outer ring body 7, simultaneously can reduce the weight of interior strengthening ring 1, thereby can reduce the holistic weight of hollow expanded high-voltage wire, make its light in weight, through being equipped with strengthening rib 6 between interior ring body 5 and outer ring body 7, can utilize strengthening rib 6 to support inner ring body 5 and outer ring body 7 each other, improve the holistic intensity and the crushing resistance of interior strengthening ring 1, through being stranded carbon fiber composite inner core 11 by many carbon fiber silk and aluminium base fiber silk, can effectively improve the holistic intensity of compound strengthening core 8, can utilize rigid plastic cover 9 to protect compound strengthening core 8 simultaneously, improve the stable in structure of compound strengthening core 8, make its self-supporting effect good, light in weight, through setting up heat conducting film 15 and silica gel particle 12 on interior aluminum core 14, can carry out the heat on inner ring 5 and outer ring body 7, can utilize strengthening rib 6 to carry out mutual support to inner ring 5 and outer ring body 7, can utilize the high-temperature resistant film to carry out the ceramic wire to carry out the corrosion protection effect on the hollow expanded high-voltage wire through the high-temperature resistant resin coating of hollow expanded high-voltage wire, can further take place the high-temperature resistant resin coating of the high-pressure resistant layer of the high-pressure resistant resin coating of the hollow expanded high-voltage wire, can carry out the corrosion-resistant resin coating layer of the anti-corrosion protection layer, the anti-corrosion protection device is further comprises the hollow expanded high-corrosion protection layer, and the hollow expanded high-voltage wire, and the high-voltage wire is more stable.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The hollow diameter-expanded high-voltage wire is characterized by comprising an inner reinforcing ring (1), an inner reinforcing layer (2), an inner composite aluminum core layer (3) and an outer composite aluminum core layer (4), wherein the inner reinforcing layer (2) comprises a composite reinforcing core (8) and a single-wire aluminum core (20), the composite reinforcing core (8) and the single-wire aluminum core (20) are arranged in a staggered mode, the composite reinforcing core (8) and the single-wire aluminum core (20) are arranged outside the inner reinforcing ring (1) in a twisting mode, the inner composite aluminum core layer (3) is located between the inner reinforcing layer (2) and the outer composite aluminum core layer (4), the inner composite aluminum core layer (3) is arranged outside the inner reinforcing layer (2) in a twisting mode, and the outer composite aluminum core layer (4) is arranged on the inner composite aluminum core layer (3) in a twisting mode; the inner composite aluminum core layer (3) comprises a plurality of inner composite aluminum core wires, the inner composite aluminum core wires comprise an inner aluminum core (14), a heat conducting film (15) and a glass fiber resin layer (13), the heat conducting film (15) is annularly arranged outside the inner aluminum core (14), and heat conducting silica gel particles (12) are filled between the heat conducting film (15) and the glass fiber resin layer (13); the outer composite aluminum core layer (4) comprises a plurality of outer composite aluminum core wires, each outer composite aluminum core wire comprises an outer aluminum core (18), an aluminum foil protective layer (17), a perchloroethylene resin anti-corrosion coating (16) and a nano ceramic wear-resistant coating (19), the aluminum foil protective layer (17) is arranged on the surface of the outer aluminum core (18) in a surrounding mode, the perchloroethylene resin anti-corrosion coating (16) is coated on the surface of the aluminum foil protective layer (17), and the nano ceramic wear-resistant coating (19) is coated on the surface of the perchloroethylene resin anti-corrosion coating (16).
2. A hollow expanded diameter high voltage wire according to claim 1, wherein: the inner reinforcing ring (1) comprises an inner ring body (5) and an outer ring body (7), and the inner ring body (5) and the outer ring body (7) are made of long glass fiber reinforced PP materials.
3. A hollow expanded diameter high voltage wire according to claim 2, wherein: reinforcing ribs (6) are arranged between the inner ring body (5) and the outer ring body (7), the reinforcing ribs (6) are arranged in a V shape, and two ends of the reinforcing ribs (6) are fixedly connected with the outer wall of the inner ring body (5) and the inner wall of the outer ring body (7) respectively.
4. A hollow expanded diameter high voltage wire according to claim 1, wherein: the composite reinforced core (8) comprises a carbon fiber composite inner core (11), and the carbon fiber composite inner core (11) is formed by stranding a plurality of carbon fiber filaments and aluminum-based fiber filaments.
5. The hollow expanded high voltage wire according to claim 4, wherein: the carbon fiber composite inner core (11) is externally provided with a protective sleeve (10), and the protective sleeve (10) is externally provided with a hard plastic sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901801.5A CN113689980B (en) | 2021-08-06 | 2021-08-06 | Hollow expanded high-voltage wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110901801.5A CN113689980B (en) | 2021-08-06 | 2021-08-06 | Hollow expanded high-voltage wire |
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| Publication Number | Publication Date |
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| CN113689980A CN113689980A (en) | 2021-11-23 |
| CN113689980B true CN113689980B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110901801.5A Active CN113689980B (en) | 2021-08-06 | 2021-08-06 | Hollow expanded high-voltage wire |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2150298A1 (en) * | 1971-08-21 | 1973-04-06 | Felten & Guilleaume Kabelwerk | |
| CN203706709U (en) * | 2013-12-16 | 2014-07-09 | 黄冈兴和电线电缆有限公司 | Expanded-diameter conductor |
| EP3045794A1 (en) * | 2015-01-16 | 2016-07-20 | Nexans | Downhole cable with integrated non-metallic tube |
| CN207149306U (en) * | 2017-08-31 | 2018-03-27 | 江西中荣信合石墨烯科技股份有限公司 | A kind of graphene wire |
| CN108831591A (en) * | 2018-05-24 | 2018-11-16 | 江苏易鼎电力科技有限公司 | A kind of novel carbon fiber compound core conducting wire |
| CN209328594U (en) * | 2018-12-27 | 2019-08-30 | 广西纵览线缆集团有限公司 | High current-carrying capacity aluminium alloy conductor for overhead transmission line |
| CN111081416A (en) * | 2019-12-23 | 2020-04-28 | 安徽宏源特种电缆股份有限公司 | Breathing and gas guiding integrated cable and production method thereof |
| CN211125117U (en) * | 2020-02-11 | 2020-07-28 | 北京帝格线束有限责任公司 | Waterproof wire with compression resistance function |
-
2021
- 2021-08-06 CN CN202110901801.5A patent/CN113689980B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2150298A1 (en) * | 1971-08-21 | 1973-04-06 | Felten & Guilleaume Kabelwerk | |
| CN203706709U (en) * | 2013-12-16 | 2014-07-09 | 黄冈兴和电线电缆有限公司 | Expanded-diameter conductor |
| EP3045794A1 (en) * | 2015-01-16 | 2016-07-20 | Nexans | Downhole cable with integrated non-metallic tube |
| CN207149306U (en) * | 2017-08-31 | 2018-03-27 | 江西中荣信合石墨烯科技股份有限公司 | A kind of graphene wire |
| CN108831591A (en) * | 2018-05-24 | 2018-11-16 | 江苏易鼎电力科技有限公司 | A kind of novel carbon fiber compound core conducting wire |
| CN209328594U (en) * | 2018-12-27 | 2019-08-30 | 广西纵览线缆集团有限公司 | High current-carrying capacity aluminium alloy conductor for overhead transmission line |
| CN111081416A (en) * | 2019-12-23 | 2020-04-28 | 安徽宏源特种电缆股份有限公司 | Breathing and gas guiding integrated cable and production method thereof |
| CN211125117U (en) * | 2020-02-11 | 2020-07-28 | 北京帝格线束有限责任公司 | Waterproof wire with compression resistance function |
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