CN223123647U - A pressure-resistant cross-linked polyethylene power cable - Google Patents
A pressure-resistant cross-linked polyethylene power cableInfo
- Publication number
- CN223123647U CN223123647U CN202422144692.9U CN202422144692U CN223123647U CN 223123647 U CN223123647 U CN 223123647U CN 202422144692 U CN202422144692 U CN 202422144692U CN 223123647 U CN223123647 U CN 223123647U
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- CN
- China
- Prior art keywords
- power cable
- pressure
- cable
- resistant
- layer
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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 application discloses a pressure-resistant crosslinked polyethylene power cable, which comprises an outer sheath, an armor layer, an oxygen-insulating inner sheath and a flame-retardant wrapping tape layer which are sequentially arranged from outside to inside, wherein the flame-retardant wrapping tape layer is internally provided with a pressure-resistant cable core, a plurality of power cable cores and a plurality of interval units. According to the power cable, the oxygen permeation is effectively prevented by the oxygen-isolation inner protective layer, the aging of the cable is delayed, and the fireproof performance of the cable is improved by the flame-retardant wrapping layer. The plurality of surrounding plate bodies surround the pressure-resistant cable core, and the spacing plate bodies play a role in separating and fixing the power cable core, so that the pressure-resistant capacity of the cable is improved, and the whole structure of the cable is more compact and stable. In addition, the insulating layer is made of crosslinked polyethylene, so that the cable has good insulating property, short circuit can be effectively prevented, the safety and reliability of the cable are improved, and the power transmission is stable and efficient.
Description
Technical Field
The utility model relates to the field of cables, in particular to a pressure-resistant crosslinked polyethylene power cable.
Background
Power cables play a critical role in power transmission and power distribution. As a core infrastructure of modern society, power cables not only provide reliable power supply for homes and businesses, but also support the normal operation of many fields of industry, traffic, communications, etc.
The existing power cable is poor in pressure resistance, and particularly when the cable is used in an environment where external pressure is frequently applied, if the internal structure of the cable is loose, effective supporting and pressure-resistant measures are lacked, so that the cable is easy to deform or damage when being stressed. Some power cables have improper insulation layer materials, which results in poor insulation performance and easy current leakage or short circuit. In addition, some power cables have defects in flame retardant and fireproof properties, and once a fire is encountered, the fire rapidly spreads to the whole cable system, with serious consequences.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provides a pressure-resistant crosslinked polyethylene power cable.
In order to achieve the above purpose, the power cable comprises an outer sheath, an armor layer, an oxygen-isolation inner sheath and a flame-retardant wrapping layer which are sequentially arranged from outside to inside, wherein the flame-retardant wrapping layer is internally provided with a pressure-resistant cable core, a plurality of power cable cores and a plurality of spacing units, the cross section of each pressure-resistant cable core is circular, the cross sections of the power cable cores are fan-shaped, the number of the power cable cores and the number of the spacing units are the same, each spacing unit comprises a supporting framework and a rubber wrapping layer wrapping the supporting framework, each supporting framework comprises a wrapping plate body and a spacing plate body, the plurality of wrapping plate bodies encircle the pressure-resistant cable cores, a spacing plate body is arranged between every two adjacent power cable cores, each rubber wrapping layer comprises a first wrapping portion wrapping the wrapping plate body, a second wrapping portion wrapping the spacing plate body and two filling portions connected with the second wrapping portion, the two filling portions can be respectively abutted to the two adjacent power cable cores, two sides of each second wrapping portion are respectively provided with a plurality of positioning protrusions, each power cable core comprises a conductor and a strip-shaped insulating layer, each wrapping layer comprises a conductor and a strip-shaped insulating layer, and the insulating layer is provided with a positioning protrusion.
Further, the armor is a steel tape armor.
Thereby improving the mechanical properties of the cable.
Further, the outer sheath is made of polyethylene materials.
Further, the spacing units have four, and the power cable core has four.
Further, the pressure-resistant cable core comprises a foaming material cladding and four pressure-resistant wire cores wrapped by the foaming material cladding, the section of each pressure-resistant wire core is in a quarter circle shape, and each pressure-resistant wire core is made of PVC materials.
Thereby further improving the voltage withstand capability of the cable.
Further, the supporting framework is made of PVC materials, and the supporting framework is integrally formed by extrusion molding.
Therefore, the supporting framework has better insulating property and can also improve the overall structural strength of the cable.
Further, the rubber cladding is integrally extrusion molded.
So that the structural strength of the rubber cladding is great.
Further, the supporting framework extends along the length direction of the power cable, and the strip-shaped positioning protrusions extend along the length direction of the power cable.
Thereby provide continuous support for the inside power cable core of cable, bar location protruding cooperatees with bar positioning groove to guaranteed that the power cable core is fixed and accurate in the inside position of cable, avoided taking place dislocation or skew in follow-up processing or use.
Compared with the prior art, the utility model has the following beneficial effects:
1. According to the power cable, the oxygen permeation is effectively prevented by the oxygen-isolation inner protective layer, the aging of the cable is delayed, and the fireproof performance of the cable is improved by the flame-retardant wrapping layer.
2. The voltage-resistant cable core is positioned at the center of the cable and is surrounded by the plurality of surrounding plate bodies, and the spacing plate bodies play a role in separating and fixing the power cable core, so that the voltage-resistant capability of the cable is improved, and the whole structure of the cable is more compact and stable.
3. According to the power cable disclosed by the application, the insulating layer is made of the crosslinked polyethylene material, so that the cable has good insulating property, current leakage and short circuit can be effectively prevented, the safety and reliability of the cable are improved, and the power transmission is stable and efficient.
Drawings
FIG. 1 is a schematic diagram of a power cable;
FIG. 2 is a cross-sectional view of a power cable;
FIG. 3 is a schematic illustration of the separation of components within a flame retardant tape layer;
FIG. 4 is an enlarged view of area A;
Fig. 5 is an enlarged view of region B.
The reference numerals indicate that the outer sheath 1, the armor layer 2, the oxygen-isolation inner sheath layer 3, the flame-retardant wrapping layer 4, the power cable core 5, the insulating layer 5.1, the conductor 5.2, the strip-shaped positioning groove 5.3, the pressure-resistant cable core 6, the pressure-resistant cable core 6.1, the foaming material cladding 6.2, the spacing unit 7, the wrapping plate body 7.1, the spacing plate body 7.2, the first wrapping part 7.3, the second wrapping part 7.4, the filling part 7.5 and the strip-shaped positioning protrusion 7.6.
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.
The utility model provides a pressure-resistant crosslinked polyethylene power cable as shown in figures 1-5, which comprises an outer sheath 1, an armor layer 2, an oxygen-insulating inner sheath 3 and a flame-retardant wrapping layer 4 which are sequentially arranged from outside to inside, wherein the flame-retardant wrapping layer 4 is internally provided with a pressure-resistant cable core 6, a plurality of power cable cores 5 and a plurality of spacing units 7, the cross section of the pressure-resistant cable core 6 is circular, the cross section of the power cable core 5 is fan-shaped, the number of the power cable cores 5 and the number of the spacing units 7 are the same, the spacing units 7 comprise a supporting framework and rubber wrapping layers wrapping the supporting framework, the supporting framework comprises a wrapping plate 7.1 and a spacing plate 7.2, the plurality of wrapping plate 7.1 encircle the pressure-resistant cable core 6, a spacing plate 7.2 is arranged between the two adjacent power cable cores 5, the rubber wrapping layers comprise a first wrapping part 7.3 wrapping the wrapping plate 7.1, a second wrapping part 7.4 wrapping the wrapping plate 7.2 and two adjacent power cable cores 7.5, the two second wrapping parts 7.5 are connected with the second wrapping part 7.4, the two adjacent power cable cores 7.5 and the two strip-shaped electric cable cores 7.5 are respectively located at the two sides of the two adjacent to each other, the two strip-shaped electric cable cores 7.5 and the strip-shaped electric cable cores 7.5 are respectively located between the two adjacent to each other, and the strip-shaped electric cable cores 7.5 and the strip-shaped electric cable cores 5 and the two adjacent electric cores are provided with the two strip-shaped electric conductors and the two 7.5 are respectively, and the two 7 and 5 are positioned.
The armor layer 2 is a steel tape armor layer. The outer sheath 1 is made of polyethylene material. The pressure-resistant cable core 6 comprises a foaming material cladding 6.2 and four pressure-resistant wire cores 6.1 wrapped by the foaming material cladding 6.2, the section of each pressure-resistant wire core 6.1 is in a quarter circle shape, and each pressure-resistant wire core 6.1 is made of PVC materials. The support skeleton is made of PVC material, and the support skeleton is integrally formed by extrusion molding. The rubber cladding is integrally formed by extrusion molding. The supporting framework extends along the length direction of the power cable, and the strip-shaped positioning protrusions 7.6 extend along the length direction of the power cable.
The power cable has the working principle that the oxygen permeation is effectively prevented by the oxygen-isolation inner protective layer, the aging of the cable is delayed, and the fireproof performance of the cable is improved by the flame-retardant wrapping layer. The plurality of surrounding plate bodies surround the pressure-resistant cable core, and the spacing plate bodies play a role in separating and fixing the power cable core, so that the pressure-resistant capacity of the cable is improved, and the whole structure of the cable is more compact and stable. In addition, the insulating layer is made of crosslinked polyethylene, so that the cable has good insulating property, short circuit can be effectively prevented, the safety and reliability of the cable are improved, and the power transmission is stable and efficient.
During concrete manufacturing, firstly, a plurality of interval units surround the pressure-resistant cable core, then the installation of a plurality of electric cable cores is realized through the matching of the strip-shaped positioning protrusions and the strip-shaped positioning grooves, meanwhile, the pressure-resistant cable core is stably wrapped by the plurality of interval units, at the moment, two filling parts of the rubber cladding can be respectively abutted to two adjacent electric cable cores, and therefore, the interval units and the electric cable cores can be accurately positioned and tightly attached to each other, the overall structural strength of the cable is enhanced, and loosening or dislocation caused by vibration or external force in the use process of the cable is avoided. And then wrapping the combined pressure-resistant cable core, the power cable core and the spacing unit together by using a flame-retardant wrapping layer, and sequentially manufacturing an oxygen-insulating inner protective layer, a steel tape armor layer and an outer sheath.
While the utility model has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the utility model as defined in the following claims.
Claims (7)
1. The utility model provides a withstand voltage formula crosslinked polyethylene power cable, its characterized in that, includes from outside to interior oversheath, armor, oxygen-proof inner sheath and the fire-retardant band layer that sets gradually, fire-retardant band in situ has a withstand voltage cable core, a plurality of power cable core and a plurality of spacer unit, the cross-section of withstand voltage cable core is circular, the cross-section of power cable core is fan-shaped, and the quantity of power cable core and spacer unit is the same, the spacer unit includes supporting framework and cladding supporting framework's rubber coating, supporting framework includes the cladding plate body and spacer plate body, and a plurality of cladding plate bodies surround withstand voltage cable core, have a spacer plate body between two adjacent power cable cores, the rubber coating includes the first cladding portion of cladding plate body, the second cladding portion of cladding plate body and two filling portions of being connected with the second cladding portion, two filling portions can respectively the adjacent two power cable cores of butt, the both sides of second cladding portion all have a plurality of location arch, the power cable core includes conductor and cladding layer, the insulating layer of insulating layer is the insulating layer of bar-shaped insulation layer, bar insulation layer has the bar-shaped location arch.
2. The pressure resistant crosslinked polyethylene power cable according to claim 1, wherein the armor layer is a steel tape armor layer.
3. The pressure resistant crosslinked polyethylene power cable according to claim 1, wherein the outer jacket is made of polyethylene material.
4. The pressure-resistant crosslinked polyethylene power cable according to claim 1, wherein the pressure-resistant cable core comprises a foaming material cladding and four pressure-resistant wire cores wrapped by the foaming material cladding, the pressure-resistant wire cores are quarter-round in cross section, and the pressure-resistant wire cores are made of PVC materials.
5. The pressure-resistant crosslinked polyethylene power cable according to claim 1, wherein the support frame is made of PVC material, and the support frame is integrally extrusion-molded.
6. The pressure resistant crosslinked polyethylene power cable according to claim 1, wherein the rubber coating is integrally extrusion molded.
7. The pressure-resistant crosslinked polyethylene power cable according to claim 1, wherein the support frame extends along a length direction of the power cable, and the strip-shaped positioning projections extend along the length direction of the power cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422144692.9U CN223123647U (en) | 2024-09-02 | 2024-09-02 | A pressure-resistant cross-linked polyethylene power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422144692.9U CN223123647U (en) | 2024-09-02 | 2024-09-02 | A pressure-resistant cross-linked polyethylene power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223123647U true CN223123647U (en) | 2025-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422144692.9U Active CN223123647U (en) | 2024-09-02 | 2024-09-02 | A pressure-resistant cross-linked polyethylene power cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN223123647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120998577A (en) * | 2025-10-17 | 2025-11-21 | 北京美捷亚科技有限公司 | A deformation-resistant cable |
| CN120998577B (en) * | 2025-10-17 | 2026-05-01 | 北京美捷亚科技有限公司 | A deformation-resistant cable |
-
2024
- 2024-09-02 CN CN202422144692.9U patent/CN223123647U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120998577A (en) * | 2025-10-17 | 2025-11-21 | 北京美捷亚科技有限公司 | A deformation-resistant cable |
| CN120998577B (en) * | 2025-10-17 | 2026-05-01 | 北京美捷亚科技有限公司 | A deformation-resistant cable |
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