CN221613595U - Coaxial power cable - Google Patents
Coaxial power cable Download PDFInfo
- Publication number
- CN221613595U CN221613595U CN202322593640.5U CN202322593640U CN221613595U CN 221613595 U CN221613595 U CN 221613595U CN 202322593640 U CN202322593640 U CN 202322593640U CN 221613595 U CN221613595 U CN 221613595U
- Authority
- CN
- China
- Prior art keywords
- shielding
- conductor
- insulating
- power cable
- coaxial power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004020 conductor Substances 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 10
- 239000003063 flame retardant Substances 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- -1 polypropylene Polymers 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004804 winding Methods 0.000 abstract description 8
- 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 abstract description 7
- 238000001125 extrusion Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000256602 Isoptera Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model relates to the technical field of cables, in particular to a coaxial power cable, which has poor resistance effect in the prior cable, comprises a conductor, wherein the conductor is externally extruded with a conductor shielding layer, an insulating layer and an insulating shielding layer, a shielding structure is arranged outside the insulating shielding layer, the shielding structure comprises a sparse winding copper wire shielding and an overlapping winding copper strip shielding, a sheath, a fire-resistant belt, a fireproof flame-retardant belt and an outer sheath are arranged outside the shielding structure, the shielding structure adopts a double-copper-core cable structure, the shielding effect is good, the cable impedance is low, and the shielding structure has good development prospect in the cable field.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a coaxial power cable.
Background
The coaxial power cable is generally used for the high-voltage cable cross-connection and interconnection ground, one end of the coaxial cable is connected with the metal sheath of the high-voltage cable, the other end of the coaxial cable is connected with the ground protection device, and overvoltage of the metal sheath of the high-voltage cable can be led into the ground protection device, so that induced potential of the metal sheath is effectively reduced.
The coaxial cable generally uses 10kV single-core wires, has a simple structure, and has relatively high impedance, poor flexibility, flame retardant property and general rat and termite resistance.
Disclosure of utility model
Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides a coaxial power cable, which solves the problem of poor resistance effect of the prior cable.
The technical scheme is that the coaxial power cable comprises a conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer are extruded outside the conductor, a shielding structure is arranged outside the insulating shielding layer, the shielding structure comprises a sparse winding copper wire shielding layer and an overlapping winding copper strip shielding layer, a sheath, a fire-resistant belt, a fireproof flame-retardant belt and an outer sheath are arranged outside the shielding structure, the sparse winding shielding section of the copper wire is consistent with the main wire core section of the conductor, the shielding structure adopts a double-copper-core cable structure, the copper wire shielding layer conducts current, the copper strip shielding layer plays a shielding role, the shielding effect is good, and the cable impedance is low.
Furthermore, the conductor is a stranded conductor formed by stranding annealed copper wires, and has good flexibility.
Furthermore, the conductor shielding layer is a non-crosslinked polypropylene semi-conductive shielding material; the insulating shielding layer is a non-crosslinked polypropylene semiconductive shielding material; the insulating layer is made of modified polypropylene insulating material, and compared with the traditional crosslinked polyethylene for the medium-voltage cable, the polypropylene insulating material has excellent electrical insulating performance, does not need crosslinking in the production process, can be recycled and reused, and is environment-friendly.
Furthermore, the sheath is made of high-density polyethylene, and the polyethylene sheath is a good waterproof material, and has a water permeation rate of about 1/10 of the polyvinyl chloride material in unit area, so that the polyethylene sheath has a good radial waterproof effect.
Furthermore, the fire-resistant belt is a ceramic mica belt, and the ceramic mica belt is formed by compounding mica powder and glass fiber cloth, so that the fire-resistant belt has strong adhesive force, good insulating property, high-temperature insulating porcelain, and is more fire-resistant, impact-resistant and spray-resistant.
Furthermore, the fireproof flame-retardant belt is a galen fiber, and the galen fiber has excellent high-temperature resistance, dimensional stability, chemical corrosion resistance and wear resistance.
Furthermore, the outer sheath adopts the special low smoke halogen-free polyolefin sheath of the B1 level of rat-proof and termite-proof flame retardance, the excellent rat-proof and termite-proof effects can be achieved by adding the environment-friendly repellent, and the flame retardance of the cable can reach the B1 level of flame retardance by adding the halogen-free flame retardant and the overall structural design of the cable.
Further, the conductor shielding layer, the insulating layer and the insulating shielding layer are formed by three-layer co-extrusion one-time extrusion.
The utility model has the technical effects that 1. The conductor adopts an annealed soft conductor, and the cable has good flexibility; 2. the conductor shielding layer, the insulating shielding layer and the insulating layer are all made of polypropylene, and compared with the traditional crosslinked polyethylene for the medium-voltage cable, the material has excellent electrical insulation performance, does not need crosslinking in the production process, can be recycled, and is environment-friendly; 3. the shielding structure adopts a composite structure of copper wire sparse winding and copper strip wrapping, and the structure belongs to a double-copper-core cable structure, and has the advantages of inner current conduction, outer shielding, good shielding effect and low cable impedance; 4. the fireproof belt and the fireproof flame-retardant belt with fireproof effect are ceramic mica tapes and first-class fibers, and have the advantages of strong adhesive force, good insulating property, impact resistance, spraying resistance, and excellent stability, chemical corrosion resistance and wear resistance compared with the traditional cable.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one: given by fig. 1, a coaxial power cable comprises a conductor 1, wherein a conductor shielding layer 2, an insulating layer 3 and an insulating shielding layer 4 are extruded outside the conductor 1, a shielding structure is arranged outside the insulating shielding layer 4, the shielding structure comprises a sparse winding copper wire shielding 5 and an overlapping winding copper belt shielding 6, and a sheath 7, a fire-resistant belt 8, a fireproof flame-retardant belt 9 and an outer sheath 10 are arranged outside the shielding structure.
On the basis of the first embodiment, the conductor 1 is a stranded conductor formed by stranding annealed copper wires, and the conductor shielding layer 2 and the insulating shielding layer 4 are both non-crosslinked polypropylene semiconductive shielding materials; the insulation layer 3 is made of modified polypropylene insulation material, the conductor shielding layer 2, the insulation layer 3 and the insulation shielding layer 4 are formed by three-layer coextrusion one-time extrusion, the sheath 7 is made of high-density polyethylene, the fire-resistant belt 8 is a ceramic mica tape, the fire-resistant flame-retardant belt 9 is a galen fiber, and the outer sheath 10 is a special low-smoke halogen-free polyolefin sheath for the B1 level, which is rat-proof and termite-proof.
The present utility model has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the utility model. Many variations and modifications may be made by one skilled in the art without departing from the principles of the utility model, which is also considered to be within the scope of the utility model.
Claims (6)
1. The utility model provides a coaxial power cable, its characterized in that, includes conductor (1), conductor (1) crowded package conductor shielding layer (2), insulating layer (3), insulating shielding layer (4) outward, insulating shielding layer (4) are equipped with shielding structure outward, shielding structure is including dredging around copper wire shielding (5) and overlapping around package copper strips shielding (6), shielding structure is equipped with sheath (7), fire-resistant area (8), fire-retardant area (9) and oversheath (10) outward, fire-resistant area (8) are ceramic mica tape, fire-retardant area (9) are the galenical fibre, oversheath (10) adopt low smoke and zero halogen polyolefin sheath.
2. A coaxial power cable according to claim 1, characterized in that the conductor (1) is a stranded conductor of annealed copper wire.
3. A coaxial power cable according to claim 1, characterized in that the conductor shield (2) is a non-crosslinked polypropylene semiconductive shield.
4. A coaxial power cable according to claim 1, characterized in that the insulating shielding layer (4) is a non-crosslinked polypropylene semiconductive shielding material.
5. A coaxial power cable according to claim 1, characterized in that the insulating layer (3) is a modified polypropylene insulation.
6. A coaxial power cable according to claim 1, characterized in that the sheath (7) is high density polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322593640.5U CN221613595U (en) | 2023-09-25 | 2023-09-25 | Coaxial power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322593640.5U CN221613595U (en) | 2023-09-25 | 2023-09-25 | Coaxial power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221613595U true CN221613595U (en) | 2024-08-27 |
Family
ID=92433748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322593640.5U Active CN221613595U (en) | 2023-09-25 | 2023-09-25 | Coaxial power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221613595U (en) |
-
2023
- 2023-09-25 CN CN202322593640.5U patent/CN221613595U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |