CN211507210U - Modified polypropylene insulated power cable with rated voltage of 110kV - Google Patents
Modified polypropylene insulated power cable with rated voltage of 110kV Download PDFInfo
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- CN211507210U CN211507210U CN202020118988.2U CN202020118988U CN211507210U CN 211507210 U CN211507210 U CN 211507210U CN 202020118988 U CN202020118988 U CN 202020118988U CN 211507210 U CN211507210 U CN 211507210U
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- modified polypropylene
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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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Abstract
The utility model discloses a modified polypropylene insulated power cable with a rated voltage of 110kV, which comprises a conductor, an insulated shielding layer and a protective layer which are arranged from inside to outside in sequence; the insulation shielding layer sequentially comprises a conductor shielding layer, a modified polypropylene insulation layer and an insulation shielding layer from inside to outside; the conductor shielding layer, the modified polypropylene insulating layer and the insulating shielding layer are produced in a three-layer co-extrusion mode. The utility model discloses following beneficial effect has: by modifying polypropylene, the embrittlement temperature is reduced, and the toughness, the electrical performance, the ageing resistance and the mechanical and physical performance are improved; the modified polypropylene can be recycled, and is green and environment-friendly; the processing cost is low; the long-term operation temperature of the modified polypropylene insulated power cable can reach 110 ℃, and the current-carrying capacity of the cable is improved.
Description
Technical Field
The utility model belongs to the technical field of the power cable technique and specifically relates to a processing cost is low, recoverable recycling, and green can improve the modified polypropylene insulation power cable of rated voltage 110kV of cable current-carrying capacity.
Background
At present, almost all high-voltage and ultrahigh-voltage power cables are crosslinked polyethylene insulated power cables, and an insulating layer of the crosslinked polyethylene insulated power cable is crosslinked by taking polyethylene as a base material through chemical reaction to form crosslinked polyethylene, so that the crosslinked polyethylene insulated power cable has good electrical property and stable heat-resistant and aging-resistant properties. However, crosslinked polyethylene insulation requires crosslinking during the production process, provides sufficient heat energy for the chemical reaction, and has relatively high production cost. The cable industry is constantly looking for new materials and processes to replace crosslinked polyethylene.
The defects and shortcomings of the crosslinked polyethylene insulated power cable are as follows: 1. the crosslinked polyethylene is a thermosetting material, can not be recycled, and is not beneficial to environmental protection; 2. the crosslinked polyethylene needs to provide very high temperature in the process of producing cable insulation; meanwhile, inert gas protection is needed, and the processing cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the production material that exists among the prior art and can not retrieve and recycle, the processing cost is high, needs the not enough of very high temperature, provides a processing cost low, and recoverable recycling, green can improve the modified polypropylene insulation power cable of rated voltage 110kV of cable current-carrying capacity.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a modified polypropylene insulated power cable with a rated voltage of 110kV comprises a conductor, an insulated shielding layer and a protective layer which are sequentially arranged from inside to outside; the insulation shielding layer sequentially comprises a conductor shielding layer, a modified polypropylene insulation layer and an insulation shielding layer from inside to outside; the conductor shielding layer, the modified polypropylene insulating layer and the insulating shielding layer are produced in a three-layer co-extrusion mode.
The utility model comprises a conductor, an insulation shielding layer and a protective layer, wherein the insulation shielding layer comprises the conductor shielding layer, a modified polypropylene insulation layer and the insulation shielding layer from inside to outside in sequence; by modifying polypropylene, the embrittlement temperature is reduced, and the toughness and the ageing resistance are improved.
Preferably, the modified polypropylene insulating layer comprises a block copolymer and ethylene propylene rubber.
Preferably, the content of the components of the block copolymer and the ethylene-propylene rubber is as follows: 97-98% of block copolymer and 2-3% of ethylene propylene rubber.
Preferably, the block interpolymer comprises propylene and ethylene.
Preferably, the content ratio of the propylene to the ethylene components is 4: 1.
preferably, the protective layer comprises a wrapping tape, a metal sleeve and an outer sheath which are sequentially arranged from inside to outside.
Therefore, the utility model discloses following beneficial effect has: by modifying polypropylene, the embrittlement temperature is reduced, and the toughness, the electrical performance, the ageing resistance and the mechanical and physical performance are improved; the modified polypropylene can be recycled, and is green and environment-friendly; the processing cost is low; the long-term operation temperature of the modified polypropylene insulated power cable can reach 110 ℃, and the current-carrying capacity of the cable is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: conductor 1, insulating shielding layer 2, protective layer 3, belting 31, metal covering 32, oversheath 33.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying drawings:
the embodiment shown in fig. 1 is a modified polypropylene insulated power cable with a rated voltage of 110kV, which comprises a conductor 1, an insulating shielding layer 2 and a protective layer 3, which are arranged in sequence from inside to outside; the insulation shielding layer sequentially comprises a conductor shielding layer, a modified polypropylene insulation layer and an insulation shielding layer from inside to outside; the modified polypropylene insulating layer comprises a block copolymer and ethylene propylene rubber; the protective layer comprises a wrapping tape 31, a metal sleeve 32 and an outer sheath 33 which are sequentially arranged from inside to outside; the conductor shielding layer, the modified polypropylene insulating layer and the insulating shielding layer are produced in a three-layer co-extrusion mode; the block copolymer and the ethylene propylene rubber comprise the following components in percentage by weight: 97-98% of block copolymer and 2-3% of ethylene propylene rubber.
Wherein the block copolymer comprises propylene and ethylene; the content ratio of the propylene to the ethylene is 4: 1.
the polypropylene modification method comprises the following steps: firstly, propylene is taken as a main monomer and is copolymerized with ethylene to obtain a block copolymer; wherein, the content of the propylene component is 80 percent, and the content of the ethylene component is 20 percent; then adding ethylene propylene rubber into the block copolymer for blending, and granulating to obtain the ultra-clean modified polypropylene insulating material; wherein, the content of the block copolymer is 97-98 percent, and the content of the ethylene propylene rubber is 2-3 percent; the insulating material obtained by the method has excellent electrical performance, ageing resistance and mechanical and physical properties.
It should be understood that the present embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (4)
1. A modified polypropylene insulated power cable with a rated voltage of 110kV is characterized by comprising a conductor (1), an insulated shielding layer (2) and a protective layer (3) which are sequentially arranged from inside to outside; the insulation shielding layer sequentially comprises a conductor shielding layer, a modified polypropylene insulation layer and an insulation shielding layer from inside to outside; the conductor shielding layer, the modified polypropylene insulating layer and the insulating shielding layer are produced in a three-layer co-extrusion mode.
2. The modified polypropylene insulated power cable of claim 1, wherein the modified polypropylene insulation layer comprises a block copolymer and ethylene propylene rubber.
3. The insulated power cable of claim 2, wherein the block copolymer comprises propylene and ethylene.
4. The insulated power cable of claim 1 or 2, wherein the protective layer comprises a tape (31), a metal sheath (32) and an outer sheath (33) arranged in sequence from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118988.2U CN211507210U (en) | 2020-01-19 | 2020-01-19 | Modified polypropylene insulated power cable with rated voltage of 110kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118988.2U CN211507210U (en) | 2020-01-19 | 2020-01-19 | Modified polypropylene insulated power cable with rated voltage of 110kV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211507210U true CN211507210U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020118988.2U Active CN211507210U (en) | 2020-01-19 | 2020-01-19 | Modified polypropylene insulated power cable with rated voltage of 110kV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211507210U (en) |
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2020
- 2020-01-19 CN CN202020118988.2U patent/CN211507210U/en active Active
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