CN214226603U

CN214226603U - Aluminum alloy core crosslinked polyethylene insulation polyvinyl chloride sheath power cable

Info

Publication number: CN214226603U
Application number: CN202120091575.4U
Authority: CN
Inventors: 赵大军
Original assignee: Kunming Mingchao Electric Cable Co ltd
Current assignee: Kunming Mingchao Electric Cable Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-17
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses an aluminum alloy core crosslinked polyethylene insulation polyvinyl chloride sheath power cable, it includes cable conductor, electric wire inner sheath, electric wire isolation layer, electric wire oversheath, electric wire support, filling layer, cable inner sheath, cable isolation layer, cable oversheath inboard is provided with the cable isolation layer, the inboard of cable isolation layer is provided with the electric wire inner sheath, the inboard of cable inner sheath is provided with the electric wire support, the cable conductor sets up on the electric wire support, be provided with the filling layer between cable conductor and the electric wire support, be provided with the electric wire inner sheath on the cable conductor, the outside of electric wire inner sheath is provided with the electric wire isolation layer, the outside of electric wire isolation layer is provided with the electric wire oversheath. The utility model has the advantages that: through the setting of support, intensity that can effectual reinforcing cable, simultaneously, separate the cable conductor, avoid the condition such as the even fire of buckling of inside cable conductor, safe in utilization.

Description

Aluminum alloy core crosslinked polyethylene insulation polyvinyl chloride sheath power cable

Technical Field

The utility model relates to a cable field especially relates to an insulating polyvinyl chloride sheath power cable of aluminum alloy core crosslinked polyethylene.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater.

In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

In the actual use process, especially in the process of erection joint, the cable coil needs to be loosened, pulled and wired, and in the process, the friction bending of the internal electric wires is easily caused, so that fire or discharge is caused between the electric wires, and potential safety hazards are formed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an aluminum alloy core crosslinked polyethylene insulating polyvinyl chloride sheath power cable to prior art not enough.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

The utility model provides an aluminum alloy core crosslinked polyethylene insulation polyvinyl chloride sheath power cable, it includes cable conductor, electric wire inner sheath, electric wire shielding layer, electric wire oversheath, wire support, filling layer, cable inner sheath, cable isolation layer, cable oversheath inboard is provided with the cable isolation layer, the inboard of cable isolation layer is provided with the electric wire inner sheath, the inboard of cable inner sheath is provided with the wire support, the cable conductor sets up on the wire support, be provided with the filling layer between cable conductor and the wire support, be provided with the electric wire inner sheath on the cable conductor, the outside of electric wire inner sheath is provided with the electric wire shielding absciss layer, the outside of electric wire shielding absciss layer is provided with the electric wire oversheath.

Further, the cable conductor is three, is regular triangle distribution, the cable conductor is twisted by a plurality of thin soft aluminum alloy silk and is made, and the monofilament diameter of aluminum alloy silk is greater than 0.2 mm.

Further, the inner sheath of the electric wire is made of cross-linked polyethylene.

Furthermore, the electric wire shielding layer is a tinned copper wire braided net layer.

Further, the outer sheath of the electric wire is a pipe made of modified polypropylene.

Further, the electric wire support is made of soft silicon rubber, and comprises a main supporting rod, three side branch pipes, a connecting plate and a reinforcing plate which are integrally formed, wherein the three side branch pipes are symmetrically arranged on the side surface of the main supporting rod, one end of the connecting plate is arranged on the main supporting rod, the other end of the connecting plate is arranged on the side branch pipes, the connecting plate is two parallel plates, and the reinforcing plate is arranged on the inner side of the connecting plate.

Further, the filling layer is made of refractory cellucotton filling materials.

Further, the cable inner sheath is a protective sheath made of ceramic silicon rubber.

Furthermore, the cable isolation layer is made of flame-retardant glass fiber.

Further, the cable outer sheath is made of polyvinyl chloride.

The utility model has the advantages that: through the setting of support, intensity that can effectual reinforcing cable, simultaneously, separate the cable conductor, avoid the condition such as the even fire of buckling of inside cable conductor, safe in utilization.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention;

in the figure: 1. a cable wire; 2. an inner wire sheath; 3. a wire shielding layer; 4. an outer wire sheath; 5. a wire holder; 6. a filling layer; 7. a cable inner sheath; 8. a cable insulation layer; 9. a cable outer sheath; 51. a primary strut; 52. a side branch; 53. connecting plates; 54. a reinforcing plate.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the contents of the specification.

As shown in the figure: the utility model provides an aluminum alloy core crosslinked polyethylene insulation polyvinyl chloride sheath power cable, it includes cable conductor 1, electric wire inner sheath 2, electric wire shielding layer 3, electric wire oversheath 4, electric wire support 5, filling layer 6, cable inner sheath 7, cable isolation layer 8, cable oversheath 9.

The cable oversheath 9 inboard is provided with cable isolation layer 8, and the inboard of cable isolation layer 8 is provided with cable inner sheath 7, and the inboard of cable inner sheath 7 is provided with wire holder 5, and cable conductor 1 sets up on wire holder 5, is provided with filling layer 6 between cable conductor 1 and the wire holder 5, is provided with electric wire inner sheath 2 on the cable conductor 1, and the outside of electric wire inner sheath 2 is provided with electric wire shielding layer 3, and the outside of electric wire shielding layer 3 is provided with electric wire oversheath 4.

The cable 1 is three, is regular triangle distribution, and cable 1 is twisted by a plurality of thin soft aluminum alloy silk and is made, and specific quantity sets up according to the in-service use needs, and the monofilament diameter of aluminum alloy silk all is greater than 0.2mm, preferred 0.35mm, and the monofilament elongation of aluminum alloy silk exceeds 30%.

The inner sheath 2 of the electric wire is made of cross-linked polyethylene, the performance of the cross-linked modified polyethylene can be greatly improved, and the comprehensive performances of the polyethylene, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like, are remarkably improved. But also obviously improves the temperature resistance level, and can improve the heat resistance temperature of the polyethylene from 70 ℃ to more than 100 ℃. Thereby greatly widening the application range of the polyethylene.

The electric wire shielding layer 3 is a tinned copper wire braided net layer, so that the transmission performance of the system in an electromagnetic interference environment can be ensured, namely the capacity of resisting external electromagnetic interference and the capacity of radiating electromagnetic interference outwards by the system.

The wire outer sheath 4 is a pipe made of MPP (modified polypropylene), and the MPP pipe has excellent electrical insulation, higher heat distortion temperature and low-temperature impact performance, and particularly has higher tensile and compression resistance than HDPE.

The wire bracket 5 is made of soft silicon rubber, the silicon rubber has good plasticity, the heat resistance of the silicon rubber is outstanding, the wire bracket can work for a long time at 180 ℃, can bear elasticity for a plurality of weeks or more even at the temperature slightly higher than 200 ℃, and can instantaneously resist the high temperature of more than 300 ℃. Silicone rubber has good gas permeability, and oxygen transmission rate is the highest among synthetic polymers. In addition, silicone rubber has outstanding properties of being physiologically inert and not causing blood coagulation.

The wire bracket 5 comprises a main supporting rod 51, three side branch pipes 52, a connecting plate 53 and a reinforcing plate 54 which are integrally formed, wherein the three side branch pipes 52 are symmetrically arranged on the side surface of the main supporting rod 51, one end of the connecting plate 53 is arranged on the main supporting rod 51, the other end of the connecting plate 53 is arranged on the side branch pipes, the connecting plate 53 is two parallel plates, and the reinforcing plate 54 is arranged on the inner side of the connecting plate 53, so that three cables 1 are arranged on two sides of the connecting plate 53 and are separated by the connecting plate 53 when in actual use, even if the cables 1 are pulled and the like in the actual use process, the cables 1 cannot be contacted with each other to avoid the fire connecting condition, in addition, a filling layer 6 is arranged in a gap between the cables 1 and the connecting plate 53 to increase the filling material, the effect of fixing the cables 1 can also be achieved, meanwhile, the friction on the outer side of the cables 1 is reduced, the breakage and the like of the cables 1 are avoided, in addition, the reinforcing plate 54 is arranged on the inner side of the connecting plate 53, the strength of its support can be reinforceed, avoids the fracture of even board 53, and simultaneously, main tributary pole 51, three collateral branch pipes 52 are solid silicon rubber pole, when possessing the flexibility, can play the effect of certain strengthening rib for the intensity increase of whole cable is difficult for the broken string.

The filling layer 6 is a refractory fiber cotton filling material, and the refractory fiber cotton has the characteristics of stable performance, long fiber, large tensile strength, less slag balls, high thermal stability, white color and the like. The classification temperature is 1050-. Sponge filler is filled between the bracket and the cable, so that the cable 1 is effectively prevented from being influenced by high temperature outside the cable.

The cable inner sheath 7 is a protective sheath made of ceramic silicon rubber, the ceramic silicon rubber has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, residues after combustion are hard ceramic shells, and the hard shells are not melted and do not drip in a fire environment.

Cable isolation layer 8 is fire-retardant glass fiber material, and glass fiber is the inorganic non-metallic material of an excellent performance, and the variety is various, and the advantage is that insulating nature is good, the heat resistance is strong, corrosion resistance is good, and mechanical strength is high, and tensile strength is big, and not only fire-retardant fire-resistant can also promote the tensile resistance of cable, the installation of being convenient for.

The cable outer sheath 9 is made of polyvinyl chloride, and has the advantages of low price, good wear resistance and wide daily use.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. In addition, the description which follows is a preferred embodiment of the invention, but is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an aluminum alloy core crosslinked polyethylene insulating polyvinyl chloride sheath power cable which characterized in that: it comprises a cable (1), a cable inner sheath (2), a cable shielding layer (3), a cable outer sheath (4), a cable bracket (5), a filling layer (6), a cable inner sheath (7), a cable isolation layer (8) and a cable outer sheath (9), a cable isolation layer (8) is arranged on the inner side of the cable outer sheath (9), a cable inner sheath (7) is arranged on the inner side of the cable isolation layer (8), the inner side of the cable inner sheath (7) is provided with a wire bracket (5), the cable (1) is arranged on the wire bracket (5), a filling layer (6) is arranged between the cable (1) and the cable bracket (5), the cable (1) is provided with an inner wire sheath (2), the outer side of the inner wire sheath (2) is provided with a wire shielding layer (3), and an electric wire outer sheath (4) is arranged on the outer side of the electric wire shielding layer (3).

2. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: cable conductor (1) is three, is regular triangle distribution, cable conductor (1) is by the thin soft aluminum alloy silk twist preparation of a plurality of roots, and the monofilament diameter of aluminum alloy silk is greater than 0.2 mm.

3. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the inner wire sheath (2) is made of cross-linked polyethylene.

4. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the wire shielding layer (3) is a tinned copper wire braided net layer.

5. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the electric wire outer sheath (4) is a pipe made of modified polypropylene.

6. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: wire support (5) adopt soft silicon rubber to make, wire support (5) are including integrated into one piece's main tributary pole (51), three collateral branch pipe (52), link board (53), reinforcing plate (54), the side symmetry of main tributary pole (51) is provided with three collateral branch pipe (52), link the one end setting of board (53) on main tributary pole (51), the other end sets up on collateral branch pipe (52), link board (53) to be two parallel boards, the inboard of linking board (53) is provided with reinforcing plate (54).

7. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the filling layer (6) is made of refractory cellucotton filling material.

8. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the cable inner sheath (7) is a protective sheath made of ceramic silicon rubber.

9. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the cable isolation layer (8) is made of flame-retardant glass fiber.

10. The power cable with the aluminum alloy core, the crosslinked polyethylene and the insulating polyvinyl chloride sheath as claimed in claim 1, wherein: the cable outer sheath (9) is made of polyvinyl chloride.