CN218100766U - Modified polypropylene insulation polyolefin sheath environment-friendly direct current traction power cable - Google Patents
Modified polypropylene insulation polyolefin sheath environment-friendly direct current traction power cable Download PDFInfo
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- CN218100766U CN218100766U CN202220474092.7U CN202220474092U CN218100766U CN 218100766 U CN218100766 U CN 218100766U CN 202220474092 U CN202220474092 U CN 202220474092U CN 218100766 U CN218100766 U CN 218100766U
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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 relates to a modified polypropylene insulation polyolefin sheath environment-friendly direct current pulls power cable, including insulation core, cladding be in waterproof layer outside insulation core and the outer jacket of parcel outside the waterproof layer. The insulating wire core comprises a conductor and a modified polypropylene layer, the modified polypropylene layer is coated outside the insulating wire core, the waterproof layer comprises an aluminum-plastic composite belt and a polyolefin sheath material layer, the aluminum-plastic composite belt is wound outside the modified polypropylene layer, and the polyolefin sheath material layer is coated outside the aluminum-plastic composite belt. The modified polypropylene layer used in the environment-friendly direct current traction power cable with the modified polypropylene insulating polyolefin sheath has higher heat resistance than crosslinked polyethylene, the mechanical property also meets the requirement of the cable, a crosslinking process is not needed, the production process is simple, and the cost is lower; the waterproof layer eliminates potential safety hazards in the use process of the cable, and the environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath material adopted by the polyolefin sheath material layer of the waterproof layer has better environment-friendly performance.
Description
Technical Field
The utility model relates to a cable field especially relates to an insulating polyolefin sheath environment-friendly direct current of modified polypropylene pulls power cable.
Background
The plastic extruded insulated power cable usually adopts Cross-linked polyethylene (XLPE) as an insulating material, and the polyethylene insulation usually adopts silane Cross-linking, chemical Cross-linking, irradiation Cross-linking and other Cross-linking processes to improve the working temperature based on the special performance of the polyethylene material.
In the crosslinking process, various crosslinking agents can be added into the polyethylene insulating material, so that toxic substances can be generated in the crosslinking processing process of the insulating layer, and the environment friendliness and later-stage recovery are not facilitated. Meanwhile, the production process is increased by the crosslinking process, the production speed is influenced, the production efficiency is reduced, and the production cost of the cable is increased. In addition, because of the defects of the crosslinked polyethylene insulating material, the cable has insulation hidden dangers such as 'water trees' and 'electric trees' in use, and has certain negative effects on the reliability of urban power supply with abundant underground water and high cable coverage rate.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an environment-friendly direct current traction power cable with a modified polypropylene insulating polyolefin sheath, which is environment-friendly, simple in production process, low in cost and low in potential safety hazard, in order to solve the technical problems.
The environment-friendly direct-current traction power cable with the modified polypropylene insulating polyolefin sheath comprises an insulating wire core, a waterproof layer and an outer protective layer, wherein the waterproof layer wraps the insulating wire core, the outer protective layer wraps the waterproof layer, the insulating wire core comprises a conductor and a modified polypropylene layer, the modified polypropylene layer wraps the conductor of the insulating wire core, the waterproof layer comprises an aluminum-plastic composite belt and a polyolefin sheath material layer, the aluminum-plastic composite belt is wound outside the modified polypropylene layer, and the polyolefin sheath material layer wraps the aluminum-plastic composite belt.
Furthermore, the conductor of the insulated wire core is a metal conductor formed by twisting annealed copper wires.
Further, the outer protective layer is made of polyolefin flame-retardant B1-grade special sheath material.
Furthermore, the outer protective layer is formed by extruding and wrapping a polyolefin flame-retardant B1-grade special sheath material outside the polyolefin sheath material layer.
The modified polypropylene layer used in the environment-friendly direct current traction power cable with the modified polypropylene insulating polyolefin sheath has higher heat resistance than crosslinked polyethylene, the mechanical property of the cable also meets the requirement of the cable, a crosslinking process is not needed, the production process is simple, and the cost is lower; the waterproof layer eliminates potential safety hazards in the use process of the cable, and the environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath material adopted by the polyolefin sheath material layer of the waterproof layer has better environment-friendly performance.
Drawings
Fig. 1 is a schematic view of an embodiment of an environment-friendly dc traction power cable with a modified polypropylene insulating polyolefin sheath.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, in one embodiment, an environment-friendly dc traction power cable with a modified polypropylene insulating polyolefin sheath includes an insulating core 110, a waterproof layer 120 covering the insulating core 110, and an outer sheath 130 covering the waterproof layer 120. The insulated wire core 110 comprises a conductor 112 and a modified polypropylene layer 114, the modified polypropylene layer 114 is coated outside the conductor 112 of the insulated wire core 110, and the conductor 112 of the insulated wire core 110 is a metal conductor twisted by annealed soft copper wires so as to realize power transmission. The modified polypropylene layer 114 is mainly made of a high polymer material with a modified polypropylene thermoplastic material as a base material. Modified polypropylene refers to polypropylene (PP) plastic which is processed by filling, blending, reinforcing and other methods, so that the PP plastic has the performances of flame retardance, high impact resistance and the like, the PP plastic has good extrusion performance, the electrical performance of the PP plastic is better than that of the existing insulating material XLPE (crosslinked polyethylene), the heat resistance of the PP plastic can reach 110 ℃, the temperature of the PP plastic is 20 ℃ higher than that of an XLPE insulating cable, and in addition, the mechanical performance of the PP plastic can also completely meet the requirements of the cable.
The waterproof layer 120 comprises an aluminum-plastic composite tape 122 and a polyolefin sheathing layer 124, the aluminum-plastic composite tape 122 is wound outside the modified polypropylene layer 114, and the polyolefin sheathing layer 124 is wrapped outside the aluminum-plastic composite tape 122. The polyolefin sheath material layer 124 is made of environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath material.
The outer jacket 130 is made of polyolefin flame-retardant B1-grade special jacket material. The outer protective layer 130 is formed by extruding and wrapping polyolefin flame-retardant B1-grade special sheath material outside a polyolefin sheath material layer. The polyolefin flame-retardant B1-grade special sheath material is an environment-friendly low-smoke halogen-free flame-retardant sheath material, has good mechanical property, flame retardant property and low-temperature resistance, generates a hard shell after combustion, does not generate dripping to cause secondary fire, and has environment-friendly properties of halogen-free low smoke and the like.
The modified polypropylene layer used in the environment-friendly direct current traction power cable with the modified polypropylene insulating polyolefin sheath has higher heat resistance than crosslinked polyethylene, the mechanical property of the cable also meets the requirement of the cable, a crosslinking process is not needed, the production process is simple, and the cost is lower; the waterproof layer eliminates potential safety hazards in the use process of the cable, and the environment-friendly low-smoke halogen-free flame-retardant polyolefin sheath material adopted by the polyolefin sheath material layer of the waterproof layer has better environment-friendly performance.
In addition, the outer protective layer is made of an environment-friendly low-smoke halogen-free flame-retardant polyolefin B1-grade special sheath material, so that the cable has good mechanical properties, flame retardance and low-temperature resistance, a hard shell is generated after combustion, secondary fire caused by dripping cannot be generated, meanwhile, the cable has the properties of no halogen, low smoke and the like, and the environment-friendly performance of flame retardance, low-temperature resistance, no halogen, low smoke and the like of the cable is realized.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (4)
1. The environment-friendly direct-current traction power cable with the modified polypropylene insulation polyolefin sheath is characterized by comprising an insulation wire core, a waterproof layer and an outer protective layer, wherein the waterproof layer wraps the insulation wire core, the outer protective layer wraps the waterproof layer, the insulation wire core comprises a conductor and a modified polypropylene layer, the modified polypropylene layer wraps the conductor of the insulation wire core, the waterproof layer comprises an aluminum-plastic composite belt and a polyolefin sheath material layer, the aluminum-plastic composite belt is wound outside the modified polypropylene layer, and the polyolefin sheath material layer wraps the aluminum-plastic composite belt.
2. The environment-friendly direct current traction power cable with the modified polypropylene insulating polyolefin sheath as claimed in claim 1, wherein the conductor of the insulating wire core is a metal conductor twisted by annealed copper wires.
3. The environment-friendly direct current traction power cable with the modified polypropylene insulating polyolefin sheath as claimed in claim 1, wherein the outer sheath is made of polyolefin flame-retardant B1-grade special sheath material.
4. The modified polypropylene insulation polyolefin sheath environment-friendly direct current traction power cable according to claim 3, wherein the outer sheath is formed by extruding polyolefin flame-retardant B1-grade special sheath material outside the polyolefin sheath material layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021234231870 | 2021-12-31 | ||
| CN202123423187 | 2021-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218100766U true CN218100766U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220474092.7U Active CN218100766U (en) | 2021-12-31 | 2022-03-04 | Modified polypropylene insulation polyolefin sheath environment-friendly direct current traction power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218100766U (en) |
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2022
- 2022-03-04 CN CN202220474092.7U patent/CN218100766U/en active Active
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