CN214505075U - Crosslinked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable - Google Patents
Crosslinked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable Download PDFInfo
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- CN214505075U CN214505075U CN202121137914.4U CN202121137914U CN214505075U CN 214505075 U CN214505075 U CN 214505075U CN 202121137914 U CN202121137914 U CN 202121137914U CN 214505075 U CN214505075 U CN 214505075U
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Abstract
The utility model provides a cross-linked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable, which comprises a cable core and a wrapping tape wrapping layer, an inner sheath, a steel wire armor layer and a cold-resistant outer sheath which are sequentially wrapped outside the cable core, wherein the cold-resistant outer sheath is sequentially provided with a first heat-insulating layer, a cold-proof cavity, a second heat-insulating layer and an outer protective layer from inside to outside, the outer protective layer is made of TPU cold-resistant materials, reinforcing ribs made of nylon ropes are spirally filled in the inner part of the outer protective layer, a plurality of marking powder filling cavities are arranged at intervals at the joint of the outer side of the second heat-insulating layer and the outer protective layer, the cold-proof cavity is arranged between the inner side of the second heat-insulating layer and the first heat-insulating layer, a plurality of cold-resistant rubber strips are uniformly arranged in the cold-proof cavity along the circumferential direction by taking the cable core as the center, and the inner side and the outer side of each cold-resistant rubber strip are respectively provided with an inner arc-shaped supporting strip and an outer arc-shaped supporting strip, and a margin cavity is arranged in the cold-resistant rubber strip.
Description
Technical Field
The utility model relates to a wire and cable technical field indicates a cold-resistant medium voltage cable of insulating thick steel wire armor of crosslinked polyethylene especially.
Background
The cable in the power transmission line is a main power transmission conductive material, the quality of the cable directly relates to the power transmission capacity and stability of the power transmission line, and the existing power transmission cable generally adopts an inner sheath and an outer sheath which are coated on the outer side of a conductor wire core to protect the cable. Based on the above, the insulating protective sleeve on the outer side of the existing common cable has limited wear resistance and is easy to wear, and meanwhile, in a cold area, the insulating protective sleeve on the outer side with low air temperature becomes brittle and has reduced protective capability, so that the outer skin can fall off and be damaged under the condition of external force, and particularly in a bent mine tunnel, the outer skin is easier to damage, and the normal use of the cable is influenced.
Therefore, the utility model provides a cold-resistant medium voltage cable of insulating thick steel wire armor of crosslinked polyethylene to solve the problem that above-mentioned exists.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide a cold-resistant medium voltage cable of insulating thick steel wire armor of crosslinked polyethylene.
In order to solve the technical problem, the utility model provides a following technical scheme: a cross-linked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable comprises a cable core, a wrapping tape wrapping layer, an inner sheath, a steel wire armored layer and a cold-resistant outer sheath which are sequentially coated outside the cable core, the cold-resistant outer sheath is sequentially provided with a first heat preservation layer, a cold insulation cavity, a second heat preservation layer and an outer protection layer from inside to outside, the outer protection layer is made of TPU cold-resistant materials, reinforcing ribs formed by nylon ropes are spirally filled in the outer protective layer, a plurality of marking powder filling cavities are arranged at the joint of the outer side of the second heat-insulating layer and the outer protective layer at intervals, a cold insulation cavity is arranged between the inner side of the second heat insulation layer and the first heat insulation layer, a plurality of cold-resistant rubber strips are uniformly arranged in the cold insulation cavity along the circumferential direction by taking the cable core as the center, the inner side and the outer side of the cold-resistant rubber strip are respectively provided with an inner arc-shaped supporting strip and an outer arc-shaped supporting strip, and a surplus cavity is formed in the cold-resistant rubber strip.
As an optimal technical scheme of the utility model, the cable core is made by a plurality of insulation core transposition, insulation core is equipped with copper conductor, conductor shield, crosslinked polyethylene insulating layer, insulation shield and copper strips around the covering by interior outside to in proper order.
As an optimal technical scheme, the cable core with around the band around be equipped with the filling layer between the covering, fill fire-retardant packing rope in the filling layer.
As an optimized technical scheme of the utility model, first heat preservation and second heat preservation all are made by heat preservation cotton or polyurethane foam.
As an optimized technical scheme of the utility model, the sign powder is filled the intracavity and is filled there is the sign powder.
The utility model discloses the beneficial effect who reaches is:
1. the outer protective layer made of cold-resistant TPU material is adopted, and reinforcing ribs formed by nylon ropes inside are matched, so that the strength of the outer sheath is enhanced on the basis of improving the cold resistance of the cable outer sheath;
2. the first heat-insulating layer and the second heat-insulating layer of the heat-insulating cotton or polyurethane foam plastic are adopted, so that the overall cold resistance of the cable is enhanced, a good heat-insulating effect is achieved, and the problem that the interior of the cable is damaged by frost cracking in a low-temperature environment is solved;
3. due to the arrangement of the cold insulation cavity, the heat insulation effect of the cable can be improved, so that cold air on the outer side cannot enter the cable, and the cold resistance of the cable is improved;
4. the arrangement of the cold-resistant rubber strip is beneficial to improving the compression resistance of the cable;
5. set up the sign powder and fill the chamber, when the frostbite fracture of outer protective layer, the sign powder spills, reminds the maintainer to discover the problem fast to carry out timely maintenance work to the cable, thereby effectively improved the life of this cable.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the cold-resistant outer sheath of the present invention;
FIG. 3 is a schematic structural view of the cold-resistant rubber strip of the present invention;
reference numbers in the figures: 1. wrapping a tape wrapping layer; 2. an inner sheath; 3. a steel wire armor layer; 4. a cold-resistant outer sheath; 5. a first insulating layer; 6. a cold insulation cavity; 7. a second insulating layer; 8. an outer protective layer; 9. reinforcing ribs; 10. identifying a powder-filled cavity; 11. cold-resistant rubber strips; 12. the inner arc-shaped supporting strip; 13. an outer arc support bar; 14. a residual cavity; 15. a copper conductor; 16. a conductor shield layer; 17. a crosslinked polyethylene insulating layer; 18. an insulating shield layer; 19. a copper strip lapping layer; 20. a filling layer; 21. a spring; 22. an operation block; 23. inserting a column; 24. an operation slot; 25. and (4) inserting the jack.
Detailed Description
The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b): as shown in fig. 1-3, the utility model provides a cold-resistant medium voltage cable of thick steel wire armor of crosslinked polyethylene insulation, include the cable core and wrap around band around covering 1, inner sheath 2, steel wire armor 3 and cold-resistant oversheath 4 of cladding in proper order outside the cable core, cold-resistant oversheath 4 is equipped with first heat preservation 5, separates cold chamber 6, second heat preservation 7 and outer protective layer 8 from inside to outside in proper order, outer protective layer 8 is the cold-resistant material of TPU and constitutes, and the inside spiral of outer protective layer 8 is filled with strengthening rib 9 that nylon rope constitutes, on the basis of improving the cable oversheath cold resistance, strengthens the intensity of oversheath; a plurality of marking powder filling cavities 10 are arranged at the joint of the outer side of the second heat-insulating layer 7 and the outer protective layer 8 at intervals, a cold insulation cavity 6 is arranged between the inner side of the second heat insulation layer 7 and the first heat insulation layer 5, a plurality of cold-resistant rubber strips 11 are uniformly arranged in the cold insulation cavity 6 along the circumferential direction by taking the cable core as the center, the inner side and the outer side of the cold-resistant rubber strip 11 are respectively provided with an inner arc-shaped supporting strip 12 and an outer arc-shaped supporting strip 13, the cold-resistant rubber strip 11 is internally provided with a surplus cavity 14, when the cable is subjected to external impact force, the cold-resistant rubber strip 11 is extruded and deformed, and because the cold-resistant rubber strip 11 is provided with the allowance cavity 14, therefore, under the action of the allowance cavity 14, the cable is stressed to compress the allowance cavity 14, so that the cable has a certain compression amount, therefore, the cable has the function of well protecting the cable core, and has good compression resistance.
Furthermore, the cable core is formed by twisting a plurality of insulated wire cores, and the insulated wire cores are sequentially provided with a copper conductor 15, a conductor shielding layer 16, a crosslinked polyethylene insulating layer 17, an insulating shielding layer 18 and a copper strip wrapping layer 19 from inside to outside.
Further, a filling layer 20 is arranged between the cable core and the wrapping tape wrapping layer 1, and the filling layer 20 is filled with the flame-retardant filling rope, so that the flame-retardant performance of the cable is improved.
Furthermore, the first heat-insulating layer 5 and the second heat-insulating layer 7 are both made of heat-insulating cotton or polyurethane foam plastic, so that the overall cold resistance of the cable is enhanced, a good heat-insulating effect is achieved, and the problem that the interior of the cable is damaged by frost cracking in a low-temperature environment is reduced.
Further, sign powder is filled in the sign powder filling cavity 10 and is filled with sign powder, and when 8 frostbite ftractures of outer protective layer, the sign powder spills, reminds maintainer to discover the problem fast to carry out timely maintenance work to the cable, thereby effectively improved the life of this cable.
The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (5)
1. The utility model provides a cold-resistant medium voltage cable of insulating thick steel wire armor of crosslinked polyethylene, a serial communication port, include the cable core and the cladding in proper order outside the cable core around the band around covering (1), inner sheath (2), steel wire armor (3) and cold-resistant oversheath (4), cold-resistant oversheath (4) are equipped with first heat preservation (5), separate cold chamber (6), second heat preservation (7) and outer protective layer (8) by interior outside to in proper order, outer protective layer (8) constitute for the cold-resistant material of TPU, just the inside spiral of outer protective layer (8) is filled strengthening rib (9) that the nylon rope constitutes, the outside of second heat preservation (7) and the junction interval of outer protective layer (8) are equipped with a plurality of sign powder and fill chamber (10), be equipped with between the inboard of second heat preservation (7) and first heat preservation (5) and separate cold chamber (6), use the cable core to have evenly arranged along the circumference direction as the center in separating cold chamber (6) (cold-resistant rubber strip(s), (cold chamber (6)), (cold-resistant rubber strip) 11) The inner side and the outer side of the cold-resistant rubber strip (11) are respectively provided with an inner arc-shaped supporting strip (12) and an outer arc-shaped supporting strip (13), and a surplus cavity (14) is formed in the cold-resistant rubber strip (11).
2. The cross-linked polyethylene insulated heavy steel wire armored cold-resistant medium-voltage cable as claimed in claim 1, wherein the cable core is formed by twisting a plurality of insulated wire cores, and the insulated wire cores are sequentially provided with a copper conductor (15), a conductor shielding layer (16), a cross-linked polyethylene insulating layer (17), an insulating shielding layer (18) and a copper strip wrapping layer (19) from inside to outside.
3. The cold-resistant medium-voltage cable of the thick steel wire armor of crosslinked polyethylene insulation of claim 1, wherein a filling layer (20) is arranged between the cable core and the wrapping tape wrapping layer (1), and the filling layer (20) is filled with the flame-retardant filling rope.
4. The cross-linked polyethylene insulated heavy steel wire armored cold-resistant medium voltage cable as claimed in claim 1, wherein the first insulating layer (5) and the second insulating layer (7) are both made of insulating cotton or polyurethane foam.
5. The cross-linked polyethylene insulated heavy steel wire armored cold-resistant medium-voltage cable as claimed in claim 1, wherein the marking powder filling cavity (10) is filled with marking powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121137914.4U CN214505075U (en) | 2021-05-25 | 2021-05-25 | Crosslinked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121137914.4U CN214505075U (en) | 2021-05-25 | 2021-05-25 | Crosslinked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable |
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| CN214505075U true CN214505075U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121137914.4U Active CN214505075U (en) | 2021-05-25 | 2021-05-25 | Crosslinked polyethylene insulated thick steel wire armored cold-resistant medium-voltage cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116170909A (en) * | 2023-03-23 | 2023-05-26 | 深圳中缆电缆集团有限公司 | Environment-friendly carbon core cable |
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2021
- 2021-05-25 CN CN202121137914.4U patent/CN214505075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116170909A (en) * | 2023-03-23 | 2023-05-26 | 深圳中缆电缆集团有限公司 | Environment-friendly carbon core cable |
| CN116170909B (en) * | 2023-03-23 | 2023-07-18 | 深圳中缆电缆集团有限公司 | Environment-friendly carbon core cable |
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