CN210091767U - Waterproof low-temperature-resistant flame-retardant medium-voltage power cable with stripping structure - Google Patents
Waterproof low-temperature-resistant flame-retardant medium-voltage power cable with stripping structure Download PDFInfo
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- CN210091767U CN210091767U CN201921425863.8U CN201921425863U CN210091767U CN 210091767 U CN210091767 U CN 210091767U CN 201921425863 U CN201921425863 U CN 201921425863U CN 210091767 U CN210091767 U CN 210091767U
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Abstract
The waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure comprises three insulating wire cores, wherein each insulating wire core comprises a conductor, and a conductor shielding layer, an insulating shielding layer, a waterproof layer I, a split-phase metal shielding layer and a waterproof layer II which are sequentially extruded from inside to outside on the conductor; fillers are arranged in gaps among the three insulating wire cores, and waterproof layers III and sheath layers are sequentially coated outside the three insulating wire cores from inside to outside; the middle of three insulation core encloses is equipped with the spacing frame of triangle, is equipped with limit structure I between spacing frame of triangle and the waterproof layer II, is equipped with limit structure II between waterproof layer II and the waterproof layer III of every insulation core, and waterproof layer III and restrictive coating department of pasting are equipped with limit structure III, are equipped with peeling structure on waterproof layer III and the restrictive coating. The utility model discloses make the cable have radially and vertically get two-way waterproof function, improve the waterproof performance of cable greatly, extension cable life, peel off the structure and make dumped cable peel off fast, improve recovery efficiency.
Description
Technical Field
The utility model belongs to the technical field of the cable, concretely relates to take waterproof low temperature resistant fire-retardant medium voltage power cable of peeling structure.
Background
At present, when the 'Chinese manufacturing' is advocated, the cable industry has entered the high-speed development stage, and the market is extremely wide. The waterproof low-temperature-resistant flame-retardant cable has very obvious use advantages under severe conditions, can normally run in dark, moist and severe environments, and can be widely applied in national regional climate temperature ranges. Due to different requirements of different customers, the requirements are higher and higher under special environments. In rainy regions in southern China, waterproof cables are more and more in demand, and at present, low-voltage power cables of 0.6/1kV and below have good performance, but medium-voltage cables, particularly 35kV cables are few. If a common 35kV medium-voltage cable is in a water environment for a long time, the cable is easy to age an insulating layer, so that the insulation is damaged, and the service life of the cable is greatly shortened; in addition, in northern areas of China, the temperature is low in winter, and a common cable is easy to crack in a low-temperature environment, so that adverse effects are caused to construction. However, when the conventional common non-flame-retardant power cable encounters fire, all organic materials are burnt into ash, and other combustible substances can be ignited to cause fire. In addition, the existing cable is not easy to peel off the outer skin in the recycling process, and great inconvenience is brought to the recycling work. There is therefore a need for improvements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides a waterproof low temperature resistant fire-retardant middling pressure power cable of area peel off structure, the utility model discloses make the cable have radial and longitudinal two-way waterproof function, improve the waterproof performance of cable greatly, effectively prolong the life of cable under the rainy moist environment, the setting of limit structure makes the cable inner structure firm, can not produce mutual aversion; stripping structure can make the discarded cable carry out quick peeling off, improves recycle efficiency.
The utility model adopts the technical proposal that: the waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure comprises three insulating wire cores, wherein the three insulating wire cores are symmetrically arranged in a phase of 120 degrees, and each insulating wire core comprises a conductor, and a conductor shielding layer, an insulating shielding layer, a waterproof layer I, a phase-splitting metal shielding layer and a waterproof layer II which are sequentially extruded from inside to outside on the conductor; a filler is arranged in gaps among the three insulating wire cores, and waterproof layers III and sheath layers are sequentially coated outside the three insulating wire cores from inside to outside; the middle of three insulation core encloses is equipped with the spacing frame of triangle, be equipped with limit structure I between every one side of the spacing frame of triangle and the waterproof layer II of the insulation core that corresponds, every waterproof layer II and the corresponding department of pasting of waterproof layer III of insulation core are equipped with limit structure II, waterproof layer III and restrictive coating department of pasting are equipped with limit structure III, be equipped with stripping structure on waterproof layer III and the restrictive coating, the surface of three insulation core is avoided to stripping structure's position.
In a preferable mode of the technical scheme, the limiting structure I comprises a protrusion I arranged at each side of the triangular limiting frame and attached to the corresponding insulating wire core and a groove I arranged on the outer surface of the waterproof layer II and matched with the protrusion I; the limiting structure II comprises a protrusion II which is arranged on the outer surface of the waterproof layer II of each insulating wire core and is attached to the waterproof layer III, and a groove II which is arranged on the inner surface of the waterproof layer III and is matched with the protrusion II; and the limiting structure III comprises a protrusion III arranged on the outer surface of the waterproof layer III and a groove III arranged on the inner surface of the sheath layer and matched with the protrusion III.
To above-mentioned technical scheme's preferred mode, peel off the structure including locating cutting groove on the restrictive coating surface and locating the III internal surfaces of waterproof layer and cut the cutting corresponding groove that groove position corresponds, cut groove inside and put and peel off the acting as go-between, cut groove notch through with restrictive coating integrated into one piece cover the thin layer with peel off the acting as go-between and cover.
To above-mentioned technical scheme's preferred mode, the conductor adopts the copper conductor that the process stranding was sticis to the layering through the copper line of annealing, the conductor shielding layer adopts the semiconductive interior shielding material to make, the insulating layer adopts chemical cross-linking polyethylene material to make, the insulating shielding layer adopts the semiconductive exterior shielding material to make, waterproof layer I adopts two-sided semiconductive inflation area that blocks water to make, phase separation metal shielding layer adopts the annealing copper wire to dredge around and soft copper area reverse binding to make, waterproof layer II adopts single face semiconductive inflation area that blocks water to make.
In a preferable mode of the technical scheme, the filler is made of a water-blocking rope material, the waterproof layer III is made of an aluminum-plastic composite tape material, and the sheath layer is made of a novel environment-friendly low-temperature-resistant flame-retardant polyolefin sheath material and is extruded outside the waterproof layer III.
The utility model has the advantages compared with the prior art:
1. according to the scheme, the purpose of protecting insulation is mainly taken as waterproof for the cable, a waterproof layer I is formed by wrapping a double-sided semiconductive water-blocking expansion tape outside an insulation shielding layer of each insulation wire core, a waterproof layer II is formed by wrapping a single-sided semiconductive water-blocking expansion tape outside a split-phase metal shielding layer, an aluminum-plastic composite tape is wrapped in an overlapping mode to form a waterproof layer III outside the insulation wire core, a polyolefin material with high compactness is adopted as a sheath layer outside the waterproof layer III, 3 waterproof layers and a sheath layer with a waterproof function form a radial waterproof function, and a water-blocking rope material is adopted as a filler to form a longitudinal waterproof function, so that the cable has the radial and longitudinal bidirectional waterproof functions, the waterproof performance of the cable is greatly improved, and the service life of the cable in a rainy and;
2. according to the scheme, the waterproof layer III is extruded with the sheath layer made of the novel environment-friendly low-temperature-resistant flame-retardant polyolefin material, so that the normal construction and operation of the cable can be ensured in a low-temperature environment within-25 ℃;
3. in the scheme, all the adopted materials belong to environment-friendly materials, and the sheath layer is low-smoke halogen-free flame-retardant polyolefin, so that the cable has the environment-friendly performance of low-smoke halogen-free flame retardance;
4. in the scheme, a limiting structure I is arranged between each side of the triangular limiting frame and the corresponding waterproof layer II of the insulating wire core, a limiting structure II is arranged at the corresponding joint of the waterproof layer II and the waterproof layer III of each insulating wire core, a limiting structure III is arranged at the corresponding joint of the waterproof layer III and the sheath layer, and the arrangement of the three limiting structures ensures that the internal structure of the cable is stable and does not shift mutually; moreover, the stripping structures are arranged on the waterproof layer III and the sheath layer, so that the waste cable can be quickly stripped, and the recycling efficiency is improved; the position of the stripping structure avoids the outer surfaces of the three insulated wire cores, and the three limiting structures can ensure that the stripping structure cannot be shifted to the position corresponding to the outer surfaces of the insulated wire cores, so that the cable cannot damage the internal wire cores in the stripping process.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the peeling structure shown in section I of FIG. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.
Referring to fig. 1-2, in one embodiment of the present invention,
the waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure comprises three insulating wire cores 1, wherein the three insulating wire cores 1 are symmetrically arranged at 120-degree phase, and each insulating wire core 1 comprises a conductor 2, and a conductor shielding layer 3, an insulating layer 4, an insulating shielding layer 5, a waterproof layer I6, a phase-splitting metal shielding layer 7 and a waterproof layer II 8 which are sequentially extruded and wrapped on the conductor 2 from inside to outside; preferably, conductor 2 adopts the copper conductor that the process of annealing sticiss the technology strand through the layering, shielding material makes in the conductor shielding layer 3 adopts the semiconduction, insulating layer 4 adopts chemical cross-linking polyethylene material to make, insulating shielding layer 5 adopts the outer shielding material of semiconduction to make, waterproof layer I6 adopts two-sided semiconduction inflation area that blocks water to make, phase separation metal shielding layer 7 adopts the annealing copper wire to dredge around and soft copper area reverse binding to make, waterproof layer II 8 adopts the one-sided semiconduction inflation area that blocks water to make.
A filler 9 is arranged in a gap between the three insulating wire cores 1, and the filler 9 is made of a water-blocking rope material; the three insulation core 1 outsides have waterproof layer III 10 and restrictive coating 11 by interior toward cladding in proper order outward, waterproof layer III 10 adopts plastic-aluminum composite tape material, restrictive coating 11 adopts the crowded package of novel environmental protection low temperature resistant fire-retardant polyolefin sheath material to form outside waterproof layer III 10.
The utility model discloses it is main with the protection insulation as the purpose to waterproof the cable, at first wind package formation waterproof layer I6 through two-sided semiconduction inflation area that blocks water outside the insulation screen layer 5 of each insulation core 1, wind package formation waterproof layer II 8 through single-sided semiconduction inflation area that blocks water outside phase-splitting metal shielding layer 7, insulation core 1 adopts the overlapping of plastic-aluminum composite tape outward to wind package formation waterproof layer III 10, the outer restrictive coating 11 of waterproof layer III 10 adopts the higher polyolefin material of compactness, 3 individual waterproof layers form radial waterproof function with restrictive coating 11 that has waterproof function, and filler 9 adopts the rope material that blocks water, form vertical waterproof function, make the cable have radial and vertical two-way waterproof function that obtains like this, improve the waterproof performance of cable greatly, effectively prolong the life of cable under the humid environment of rainy.
A triangular limiting frame 12 is arranged in the middle surrounded by the three insulation wire cores 1, a limiting structure I13 is arranged between each side of the triangular limiting frame 12 and a waterproof layer II 8 of the corresponding insulation wire core 1, and each limiting structure I13 comprises a protrusion I1201 arranged at the position, attached to the corresponding insulation wire core 1, of each side of the triangular limiting frame 12 and a groove I801 arranged on the outer surface of the waterproof layer II 8 and matched with the protrusion I1201; a limiting structure II 14 is arranged at the corresponding joint of the waterproof layer II 8 and the waterproof layer III 10 of each insulating wire core 1, and the limiting structure II 14 comprises a protrusion II 802 arranged on the outer surface of the waterproof layer II 8 of each insulating wire core 1 and in the joint with the waterproof layer III 10 and a groove II 1001 arranged on the inner surface of the waterproof layer III 10 and matched with the protrusion II 802; waterproof layer III 10 and restrictive coating 11 department of pasting mutually is equipped with limit structure III 15, limit structure III 15 is including locating protruding III 1002 on waterproof layer III 10 surface and locating the recess III 1101 with protruding III 1002 adaptation on the 11 internal surface of restrictive coating. The arrangement of the three limiting structures ensures that the internal structure of the cable is stable and does not shift mutually.
Be equipped with peeling structure 16 on waterproof layer III 10 and the restrictive coating 11, peeling structure 16 is including locating cutting groove 1102 on the restrictive coating 11 surface and locating the cutting that waterproof layer III 10 internal surface corresponds with cutting groove 1102 position and correspond groove 1003, it has the line 17 of acting as go-between to peel off to cut the inside of groove 1102, cut the groove 1102 notch and will peel off the line 17 of acting as go-between and cover through the thin layer 1103 that covers with restrictive coating 11 integrated into one piece. When the cable is peeled by using the peeling structure 16, one end of the peeling pull wire 17 is pulled to be pulled outwards, the covering thin layer 1103 can be easily pulled open, the cutting groove 1102 is made to be exposed, people use the cutter to cut along the cutting groove 1102, the waste cable can be quickly peeled, the sliding of the cutter tip is prevented from hurting hands, and the recycling efficiency is improved. The covering sheet 1103 can completely shield the release wire 17, so that the cable can maintain its original smooth outer surface in use. The position of the stripping structure 16 avoids the outer surfaces of the three insulated wire cores 1, and the stripping structure 16 is limited by the three limiting structures, so that the stripping structure 16 cannot be shifted to the position corresponding to the outer surface of the insulated wire core 1, and the inner wire core cannot be damaged in the stripping process of the cable.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. Take waterproof low temperature resistant fire-retardant middling pressure power cable of structure of peeling off, including three insulation core (1), three insulation core (1) arrange its characterized in that with 120 phase symmetry: each insulated wire core (1) comprises a conductor (2), and a conductor shielding layer (3), an insulating layer (4), an insulating shielding layer (5), a waterproof layer I (6), a split-phase metal shielding layer (7) and a waterproof layer II (8) which are sequentially extruded from inside to outside on the conductor (2); a filler (9) is arranged in a gap between the three insulating wire cores (1), and waterproof layers III (10) and sheath layers (11) are sequentially coated outside the three insulating wire cores (1) from inside to outside; the middle of three insulation core (1) enclose is equipped with spacing (12) of triangle, be equipped with limit structure I (13), every side of spacing (12) of triangle between waterproof layer II (8) with the insulation core (1) that corresponds, every waterproof layer II (8) and the corresponding department of pasting of waterproof layer III (10) of insulation core (1) are equipped with limit structure II (14), waterproof layer III (10) and restrictive coating (11) department of pasting are equipped with limit structure III (15), be equipped with on waterproof layer III (10) and restrictive coating (11) and peel off structure (16), the surface of three insulation core (1) is avoided to the position of peeling off structure (16).
2. The waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure according to claim 1, characterized in that: the limiting structure I (13) comprises a protrusion I (1201) arranged at the position, attached to the corresponding insulating wire core (1), of each side of the triangular limiting frame (12) and a groove I (801) arranged on the outer surface of the waterproof layer II (8) and matched with the protrusion I (1201); the limiting structure II (14) comprises a protrusion II (802) arranged on the outer surface of the waterproof layer II (8) of each insulating wire core (1) and attached to the waterproof layer III (10), and a groove II (1001) arranged on the inner surface of the waterproof layer III (10) and matched with the protrusion II (802); and the limiting structure III (15) comprises a protrusion III (1002) arranged on the outer surface of the waterproof layer III (10) and a groove III (1101) arranged on the inner surface of the sheath layer (11) and matched with the protrusion III (1002).
3. The waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure according to claim 1, characterized in that: peel off structure (16) including locating cutting groove (1102) on restrictive coating (11) surface and locating waterproof layer III (10) internal surface and cutting corresponding groove (1003) of cutting that groove (1102) position corresponds, cut groove (1102) inside and put and peel off stay wire (17), cut groove (1102) notch and will peel off stay wire (17) and cover through covering thin layer (1103) with restrictive coating (11) integrated into one piece.
4. The waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure according to claim 1, characterized in that: conductor (2) adopt the copper conductor of process annealing through the layering sticiss the technology strand synthesis, shielding material makes in shielding layer (3) adopt the semiconduction, insulating layer (4) adopt chemical crosslinking polyethylene material to make, shielding layer (5) adopt the outer shielding material of semiconduction to make, waterproof layer I (6) adopt two-sided semiconduction inflation area that blocks water to make, phase separation metallic shield layer (7) adopt the annealing copper wire to dredge around and soft copper area reverse binding to make, waterproof layer II (8) adopt the single face semiconduction inflation area that blocks water to make.
5. The waterproof low-temperature-resistant flame-retardant medium-voltage power cable with the stripping structure according to claim 1, characterized in that: the waterproof cable is characterized in that the filler (9) is made of a water-blocking rope material, the waterproof layer III (10) is made of an aluminum-plastic composite belt material, and the sheath layer (11) is formed by extruding and wrapping a novel environment-friendly low-temperature-resistant flame-retardant polyolefin sheath material outside the waterproof layer III (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425863.8U CN210091767U (en) | 2019-08-30 | 2019-08-30 | Waterproof low-temperature-resistant flame-retardant medium-voltage power cable with stripping structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425863.8U CN210091767U (en) | 2019-08-30 | 2019-08-30 | Waterproof low-temperature-resistant flame-retardant medium-voltage power cable with stripping structure |
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| CN210091767U true CN210091767U (en) | 2020-02-18 |
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| CN201921425863.8U Active CN210091767U (en) | 2019-08-30 | 2019-08-30 | Waterproof low-temperature-resistant flame-retardant medium-voltage power cable with stripping structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670016A (en) * | 2021-01-13 | 2021-04-16 | 陕西通达电缆制造有限公司 | Environment-friendly high-temperature-resistant shielding fireproof flexible cable |
| CN112882172A (en) * | 2021-03-18 | 2021-06-01 | 烽火通信科技股份有限公司 | Armored optical cable and production equipment and method thereof |
-
2019
- 2019-08-30 CN CN201921425863.8U patent/CN210091767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670016A (en) * | 2021-01-13 | 2021-04-16 | 陕西通达电缆制造有限公司 | Environment-friendly high-temperature-resistant shielding fireproof flexible cable |
| CN112882172A (en) * | 2021-03-18 | 2021-06-01 | 烽火通信科技股份有限公司 | Armored optical cable and production equipment and method thereof |
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