CN217134032U - Super flexible waterproof anti-cracking fire-resistant environment-friendly medium voltage cable - Google Patents
Super flexible waterproof anti-cracking fire-resistant environment-friendly medium voltage cable Download PDFInfo
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- CN217134032U CN217134032U CN202221111612.4U CN202221111612U CN217134032U CN 217134032 U CN217134032 U CN 217134032U CN 202221111612 U CN202221111612 U CN 202221111612U CN 217134032 U CN217134032 U CN 217134032U
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Abstract
The utility model provides a fire-resistant environment-friendly medium voltage cable of cracking is prevented in super flexibility, belongs to cable technical field, including conductor, internal shield layer, insulating layer, outer shielding layer, metallic shield, flame retardant coating, aluminium strip armor, restrictive coating. The super-flexibility of the cable is fully exerted through the cooperation effect of three materials, namely a metal shielding layer, a ceramic fire-resistant layer and an armor layer which is wrapped by a flexible aluminum tape double-layer gap in a loose copper wire winding process; the fire-resistant, flame-retardant and environment-friendly performances of the cable are fully exerted through the cooperative effect of the ceramic fire-resistant layer and the sheath layer; the waterproof and anti-cracking performance of the cable is fully exerted through the cooperative effect of the sheath layer material and the super-flexibility performance of the cable. The finished cable has the advantages of long service life, super flexibility, fire resistance, flame retardance, environmental protection, excellent electrical insulation performance, water resistance and cracking resistance, meets the urgent requirements of a smart power grid on the long-service-life high-performance medium-voltage cable, and ensures continuous stable and safe operation of the power grid.
Description
Technical Field
The utility model belongs to the technical field of the cable, concretely relates to waterproof fire-resistant environment-friendly medium voltage cable who prevents ftractureing of super flexibility, mainly used power transmission system guarantees that the electric wire netting lasts stable safe operation.
Background
The world is facing the problem of climate warming, and various countries continuously pay attention to the development and application of environment-friendly products, wherein the development and large-scale application of fire-resistant environment-friendly cables become the development trend of the wire and cable industry. Meanwhile, the national power grid company takes the construction of the smart power grid as a core target, and puts forward higher requirements on the performance of a wire and cable product in a special scene, particularly a medium-voltage power cable, and the cable has comprehensive performances of super flexibility, water resistance, cracking resistance, fire resistance, environmental protection and the like in the construction and operation processes, so that the ultra-long service life and stability are ensured, and the smart power grid is protected.
The patent with the patent number of CN210743658U discloses a low-smoke halogen-free flame-retardant fireproof photoelectric composite cable for a coal mine, which comprises a filling layer, an insulating wire core, a signal wire core and a cable sheath, wherein the insulating wire core comprises a conductor, an inner shielding layer, an insulating layer and an outer shielding layer, the signal wire core comprises an optical fiber bundle, a fiber paste, a hollow micro-tube and a loose tube, and the cable sheath sequentially comprises a first layer of glass fiber tape layer, a weave, a flame retardant coating, a first flame retardant coating, a second flame retardant coating, a steel tape armoring layer, a second layer of glass fiber tape layer and an outer sheath from inside to outside; the cable is light in weight, reduces laying times, has the functions of online monitoring of temperature distribution information of the cable body and signal transmission, and has fire resistance. Patent No. CN112750565B discloses an intelligent temperature-sensing power supply cable with uniform electric field, which comprises a conductor cable core and an insulating layer, wherein the conductor cable core is composed of a central conductor and tile-shaped conductors, and a conductive insertion strip is embedded in a corner arc gap of adjacent tile-shaped conductors; the intelligent power supply cable realizes safe transmission of electric energy and accurate real-time intelligent monitoring of the operation condition of the power load of the cable. Patent No. CN102938272B discloses a method for manufacturing a fire-resistant medium-high voltage cable, which includes a conductor, an inner shield layer, an insulating layer, an outer shield layer, a metal shield layer, a split-phase fire-resistant isolation layer, a metal armor layer, and an outer sheath layer, and has certain mechanical strength and good electrical insulation performance, thereby improving the fire resistance of the cable. The cable disclosed in the prior art has insulation performance, fire resistance and online monitoring performance, but does not have super-good flexibility, fire resistance and environmental protection performance, has poor performance comprehensiveness, and cannot well meet the performance requirements of a smart grid on a long-life high-performance medium-voltage cable. There is therefore a need for improvements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides a fire-resistant environment-friendly medium voltage cable of super flexibility waterproof anti-cracking, the utility model discloses a cooperation effect of three materials of metal shielding layer, ceramic fire-resistant layer, flexible aluminium strip double-layer clearance lapping of copper wire sparse winding technology, the armor that makes the super flexibility of cable fully exert; the fire-resistant, flame-retardant and environment-friendly performances of the cable are fully exerted through the cooperative effect of the ceramic fire-resistant layer and the sheath layer; the waterproof and anti-cracking performance of the cable is fully exerted through the cooperation effect of the sheath layer material and the super-flexibility performance of the cable. The finished cable has the advantages of long service life, super flexibility, fire resistance, flame retardance, environmental protection, excellent electrical insulation performance, water resistance and cracking resistance, meets the urgent requirements of a smart power grid on the long-service-life high-performance medium-voltage cable, and ensures continuous stable safe operation of the power grid.
The utility model adopts the technical proposal that: the fire-resistant environment-friendly medium-voltage cable comprises a conductor, wherein an inner shielding layer, an insulating layer and an outer shielding layer are sequentially extruded outside the conductor from inside to outside; the metal shielding layer is formed by lapping and fixing an annealing annealed copper wire and a reverse copper wire which are lapped by adopting a semiconductive nylon belt as an inner layer and a high-purity copper rod as an outer layer through drawing, and overlapping and lapping non-woven fabrics.
In order to further limit the technical scheme, the conductor is a second type stranded copper conductor which is formed by drawing a high-purity copper rod into an annealed copper wire and then stranding.
The technical scheme is further limited, the inner shielding layer, the insulating layer and the outer shielding layer are formed into a three-layer co-extrusion structure through one-time extrusion crosslinking, and the three-layer co-extrusion structure sequentially, tightly and circularly covers the outer surface of the conductor.
In order to further limit the technical scheme, the inner shielding layer, the insulating layer and the outer shielding layer are respectively made of a semiconductive inner shielding thermoplastic material, a high-purity chemical crosslinked polyethylene insulating material and a semiconductive outer shielding thermoplastic material.
In addition, the technical scheme is further limited, and the fire-resistant layer is formed by lapping and winding high-elasticity ceramic silicon rubber belts.
The technical scheme is further limited, and the aluminum tape armor layer is formed by wrapping flexible aluminum tape double-layer gaps.
The technical scheme is further limited, and the sheath layer is made of a transverse waterproof anti-cracking low-smoke halogen-free flame-retardant polyolefin sheath material.
In a further limitation of the above technical solution, an optical fiber element is disposed in the refractory layer.
In order to further limit the technical scheme, 4 optical fiber elements are uniformly distributed in the fire-resistant layer in the circumferential direction.
In the technical scheme, each optical fiber element comprises a temperature measurement optical fiber unit, and a thin copper pipe is sleeved outside the temperature measurement optical fiber unit to serve as a protective sleeve.
The utility model has the advantages compared with the prior art:
1. according to the scheme, the inner layer of the metal shielding layer is wrapped by a semi-conductive nylon belt, the outer layer of the metal shielding layer is loosely wound by an annealed soft copper wire and a reverse copper strip which are made by drawing a high-purity copper rod, and the annealed soft copper wire and the reverse copper strip are overlapped, wrapped and fixed by non-woven fabrics, so that the shielding layer has good current-carrying capacity and short circuit emergency performance, and meanwhile, the copper wire loosely winding process enables a cable to have good bending performance, and the flexibility characteristic is shown;
2. according to the scheme, the fire-resistant layer is wrapped by overlapping high-elasticity ceramic silicon rubber belts, so that the cable has excellent fire-resistant and environment-friendly performances, a ceramic layer is formed when the cable meets high-temperature open fire, and the insulation wire core is continuously and effectively protected;
3. in the scheme, the armor layer is wrapped by adopting a flexible aluminum tape double-layer gap, so that firstly, the cable is subjected to metal protection, and secondly, the flexibility and the bending performance of the cable are improved due to the good extensibility of the aluminum tape;
4. the conductor in the scheme is formed by drawing a high-purity copper rod into an annealed copper wire and then stranding, and has good current-carrying capacity and flexibility; the inner shielding layer, the insulating layer and the outer shielding layer are formed by one-step extrusion crosslinking through a three-layer co-extrusion technology, so that the cable has excellent electrical performance and mechanical performance, and long-term stable operation of the cable is ensured;
5. according to the scheme, the sheath layer is made of the transverse waterproof anti-cracking low-smoke halogen-free flame-retardant polyolefin sheath material, so that the requirement on environmental protection performance is effectively met, and meanwhile, the cable can be waterproof and anti-cracking and resists the influence of external environment;
6. according to the scheme, the cable fully exerts super-flexibility through the cooperation effect of three materials, namely a metal shielding layer, a ceramic fire-resistant layer and an armor layer of a flexible aluminum tape double-layer gap wrapping process; the fire-resistant, flame-retardant and environment-friendly performances of the cable are fully exerted through the cooperative effect of the ceramic fire-resistant layer and the sheath layer; through the cooperation effect of the sheath layer material and the super-flexibility of the cable, the waterproof and anti-cracking performance of the cable can be fully exerted, the finished cable has long service life, super-flexibility, fire-resistant, flame-retardant and environment-friendly performance, excellent electrical insulation performance and waterproof and anti-cracking performance, the urgent requirements of a smart power grid on the long-service-life high-performance medium-voltage cable are met, and the continuous stable and safe operation of the power grid is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
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.
It should be noted that, in this document, 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 of the elements" does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Please refer to fig. 1, which illustrates an embodiment of the present invention.
The utility model provides a waterproof fire-resistant environment-friendly medium voltage cable who prevents fracture of super flexibility, as shown in figure 1, including conductor 1, 1 outside of conductor is by interior toward outer crowded package in proper order has internal shield layer 2, insulating layer 3, outer shielding layer 4, internal shield layer 2, insulating layer 3 and outer shielding layer 4 are the three-layer structure of crowded altogether through once extrusion cross-linking shaping, the three-layer is crowded structure outside altogether and has metal shielding layer 5 around having, 5 outsides of metal shielding layer have flame retardant coating 6 around having, 6 outsides of flame retardant coating have aluminium strip armor 7 around having, 7 outside claddings of aluminium strip armor have restrictive coating 8.
The conductor 1 is made of annealed copper wires through drawing and then stranded to form a second type of stranded copper conductor, and has good current-carrying capacity and flexibility.
The inner shielding layer 2, the insulating layer 3 and the outer shielding layer 4 are respectively made of a semi-conductive inner shielding thermoplastic material, a high-purity chemical cross-linked polyethylene insulating material and a semi-conductive outer shielding thermoplastic material, and are formed into a three-layer co-extrusion structure through one-step extrusion cross-linking, so that the three-layer co-extrusion structure is sequentially, tightly and circularly covered on the outer surface of the conductor 1, excellent electrical performance and mechanical performance are achieved, and long-term stable operation of the cable is guaranteed.
The metal shielding layer 5 is formed by winding and fixing an annealed soft copper wire and a reverse copper wire which are wound by a semi-conductive nylon belt on the inner layer and a high-purity copper rod through drawing, and overlapping and winding non-woven fabrics, so that the shielding layer has good current-carrying capacity and short circuit emergency performance, and meanwhile, the copper wire is wound and fixed to enable the cable to have good bending performance, and the flexibility characteristic is displayed.
The fire-resistant layer 6 is formed by lapping high-elasticity ceramic silicon rubber belts in an overlapping mode, so that the cable has excellent fire-resistant environment-friendly performance, a ceramic layer is formed when the cable meets high-temperature open fire, and the insulation wire core is continuously and effectively protected.
Also, an optical fiber element 9 is provided in the flame retardant layer 6. Preferably, 4 optical fiber elements 9 are uniformly distributed in the fire-resistant layer 6 in the circumference; each optical fiber element 9 comprises a temperature measurement optical fiber unit, and a thin copper pipe is sleeved outside the temperature measurement optical fiber unit to serve as a protective sleeve.
The cable in the utility model has the advantages that the super flexibility is fully exerted through the cooperation effect of three materials of the metal shielding layer, the ceramic fire-resistant layer and the armor layer of the flexible aluminum strip double-layer gap wrapping of the copper wire sparse winding process; the fire-resistant, flame-retardant and environment-friendly performances of the cable are fully exerted through the cooperative effect of the ceramic fire-resistant layer and the sheath layer; the waterproof and anti-cracking performance of the cable is fully exerted through the cooperation effect of the sheath layer material and the super-flexibility performance of the cable. The finished cable has the advantages of long service life, super flexibility, fire resistance, flame retardance, environmental protection, excellent electrical insulation performance, water resistance and cracking resistance, meets the urgent requirements of a smart power grid on the long-service-life high-performance medium-voltage cable, and ensures continuous stable safe operation of the power grid.
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, and any reference signs in the claims are not intended to 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 (10)
1. The utility model provides a fire-resistant environment-friendly medium voltage cable of cracking is prevented in super flexibility, its characterized in that: the cable comprises a conductor (1), wherein an inner shielding layer (2), an insulating layer (3) and an outer shielding layer (4) are sequentially extruded from inside to outside on the exterior of the conductor (1), a metal shielding layer (5) is wound on the exterior of the outer shielding layer (4), a fire-resistant layer (6) is wound on the exterior of the metal shielding layer (5), an aluminum tape armor layer (7) is wound on the exterior of the fire-resistant layer (6), and a sheath layer (8) is wound on the exterior of the aluminum tape armor layer (7); the metal shielding layer (5) is formed by lapping and fixing an inner layer by adopting a semiconductive nylon belt, an outer layer by adopting an annealed soft copper wire and a reverse copper strip which are made by drawing a high-purity copper rod, and overlapping and lapping non-woven fabrics.
2. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the conductor (1) is a second type stranded copper conductor which is formed by drawing a high-purity copper rod into an annealed copper wire and then stranding.
3. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the inner shielding layer (2), the insulating layer (3) and the outer shielding layer (4) are formed into a three-layer co-extrusion structure through one-time extrusion crosslinking, and the three-layer co-extrusion structure is sequentially, closely and roundly covered on the outer surface of the conductor (1).
4. The fire-resistant environment-friendly medium voltage cable of claim 3, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the inner shielding layer (2), the insulating layer (3) and the outer shielding layer (4) are respectively made of a semiconductive inner shielding thermoplastic material, a high-purity chemical crosslinked polyethylene insulating material and a semiconductive outer shielding thermoplastic material.
5. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the fire-resistant layer (6) is formed by lapping and wrapping high-elasticity ceramic silicon rubber belts.
6. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the aluminum strip armor layer (7) is formed by wrapping flexible aluminum strips in a double-layer gap mode.
7. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the sheath layer (8) is made of a transverse waterproof anti-cracking low-smoke halogen-free flame-retardant polyolefin sheath material.
8. The fire-resistant environment-friendly medium voltage cable of claim 1, which is ultra-flexible, waterproof and crack-resistant, characterized in that: an optical fiber element (9) is arranged in the fire-resistant layer (6).
9. The fire-resistant environment-friendly medium voltage cable of claim 8, which is ultra-flexible, waterproof and crack-resistant, characterized in that: the optical fiber elements (9) are uniformly distributed in the fire-resistant layer (6) in a number of 4.
10. The fire-resistant environment-friendly medium voltage cable with ultra-flexibility, water resistance and cracking resistance as claimed in claim 8 or 9, wherein: each optical fiber element (9) comprises a temperature measurement optical fiber unit, and a thin copper pipe is sleeved outside the temperature measurement optical fiber unit to serve as a protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111612.4U CN217134032U (en) | 2022-05-10 | 2022-05-10 | Super flexible waterproof anti-cracking fire-resistant environment-friendly medium voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111612.4U CN217134032U (en) | 2022-05-10 | 2022-05-10 | Super flexible waterproof anti-cracking fire-resistant environment-friendly medium voltage cable |
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| Publication Number | Publication Date |
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| CN217134032U true CN217134032U (en) | 2022-08-05 |
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| CN202221111612.4U Active CN217134032U (en) | 2022-05-10 | 2022-05-10 | Super flexible waterproof anti-cracking fire-resistant environment-friendly medium voltage cable |
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| CN (1) | CN217134032U (en) |
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- 2022-05-10 CN CN202221111612.4U patent/CN217134032U/en active Active
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