CN214624490U

CN214624490U - Flexible cold-resistant cable

Info

Publication number: CN214624490U
Application number: CN202120759660.3U
Authority: CN
Inventors: 朱昀; 王芝芳
Original assignee: Suzhou Skt Electronic Technology Co ltd
Current assignee: Suzhou Skt Electronic Technology Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-05
Anticipated expiration: 2031-04-14

Abstract

The utility model provides a flexible cold-resistant cable, which comprises a plurality of wire cores, wherein the outside of each wire core is wound with an insulating sleeve, and a cable core is formed by twisting the plurality of insulating sleeves; the cable core outside is around being equipped with the inner sheath, and the inner sheath outside is around being equipped with the lag, is equipped with the annular chamber in the lag and is equipped with the heat preservation in the annular chamber, and the lag outside is around being equipped with the shielding layer, and the shielding layer outside is around being equipped with the oversheath, is equipped with cold insulation in the oversheath. The utility model discloses can improve the mechanical strength and the cold-resistant ability of cable.

Description

Flexible cold-resistant cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to flexible cold-resistant cable.

Background

The cable used for power or signal transmission is widely applied to the fields of urban underground power grids, power stations, power supply of industrial and mining enterprises, underwater power transmission of river-crossing sea and the like, and occupies a great proportion in a power transmission system. Cables are typically made by twisting several or groups of conductors, each group insulated from each other and often twisted about a common central axis, with a highly insulating covering the entire circumference. Therefore, the cable has the characteristics of internal electrification and external insulation.

In the prior art, the toughness, tensile property and cold resistance of the cable are poor, and the cable is very easily broken and damaged due to the gravity of ice cones formed by solidification of natural ice water in an extremely cold area, or rain and snow penetrate into the cable to cause short circuit, so that power transmission is influenced and economic loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flexible cold-resistant cable improves the mechanical strength and the cold-resistant ability of cable.

The utility model provides a following technical scheme:

the application provides a flexible cold-resistant cable which comprises a plurality of wire cores, wherein insulating sleeves are wound on the outer sides of the wire cores, and the plurality of insulating sleeves are twisted to form a cable core; the utility model discloses a thermal insulation protection device, including the cable core, the cable core outside is around being equipped with the inner sheath, the inner sheath outside is around being equipped with the lag, be equipped with the annular chamber in the lag and be equipped with the heat preservation in the annular chamber, the lag outside is around being equipped with the shielding layer, the shielding layer outside is around being equipped with the oversheath, be equipped with cold insulation layer in the oversheath, the oversheath outside is equipped with the polyimide film, has excellent thermal stability, corrosion resistance and mechanical properties.

Preferentially, the wire core adopts tin-plated copper-aluminum alloy wires and adopts high-strength fiber wires, so that the strength and the bending resistance are improved.

Preferably, the insulating sleeve is made of polyether-ether-ketone materials, so that the friction coefficient and the dielectric loss are reduced.

Preferably, a gap between the cable core and the inner wall of the inner sheath is filled with a flame retardant material, and the flame retardant material is made of glass fiber yarns.

Preferentially, the lag is double-deck helical structure and adopts the silicon rubber material, and double-deck helical structure middle part is equipped with logical groove, the interior sheath is located logical inslot, the annular chamber is located between lag inner wall and the outer wall, and reinforcing cable radial strength and toughness, double-deck helical structure avoid the ice cone to pierce through the cable.

Preferably, the heat-insulating layer is made of polystyrene foam, so that the temperature adaptability is high, the mechanical strength is good, and the buffering performance is excellent.

Preferentially, the cold insulation layer is made of high-density polyethylene, the outer sheath is made of environment-friendly fluoroplastic, and the working time of the cable in low-temperature, high-oil-stain and high-humidity environments for a long time is prolonged.

The utility model has the advantages that:

1. the protective sleeve adopts a double-layer spiral structure, and the heat insulation layer is filled between the inner wall and the outer wall, so that the mechanical strength of the cable in the radial direction is improved, the internal wire core is insulated, and the mechanical performance and the cold resistance of the cable are improved;

2. the oversheath outside is equipped with the polyimide film and insulates against heat, is equipped with cold insulation layer in the oversheath intermediate layer, reduces coefficient of heat conductivity, improves the cold-resistant ability of cable and prevents that low temperature from influencing the normal work of inside sinle silk.

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 cross-sectional view of the present invention;

fig. 2 is a schematic view of the protective cover of the present invention.

Labeled as: 1. the cable comprises a cable core, 2 parts of an insulating sleeve, 3 parts of an inner sleeve, 4 parts of a protective sleeve, 41 parts of a heat insulation layer, 42 parts of a through groove, 5 parts of a shielding layer, 6 parts of an outer sleeve and 61 parts of a cold insulation layer.

Detailed Description

As shown in figure 1, the application provides a flexible cold-resistant cable, including many sinle silk 1, sinle silk 1 adopts tin-plated copper aluminum alloy silk, adopts high strength cellosilk, improvement intensity and resistant bending property. The outer side of the wire core 1 is wound with an insulating sleeve 2, and the insulating sleeve 2 is made of polyether-ether-ketone materials, so that the friction coefficient and the dielectric loss are reduced. A cable core is formed by twisting a plurality of insulating sleeves 2, a gap between the cable core and the inner wall of the inner sheath 3 is filled with a flame-retardant material, and the flame-retardant material is made of glass fiber yarns.

As shown in fig. 1-2, the cable core outside is around being equipped with inner sheath 3, inner sheath 3 adopts low smoke and zero halogen material, the 3 outsides of inner sheath are around being equipped with lag 4, lag 4 is double-deck helical structure and adopts the silicon rubber material, double-deck helical structure middle part is equipped with logical groove 42, inner sheath 3 is located logical inslot 42, be equipped with annular chamber and annular chamber in the lag 4 and be equipped with heat preservation 41, heat preservation 41 adopts the polystyrene foam material, temperature strong adaptability, mechanical strength is good, and the shock-absorbing capacity is excellent. The annular chamber is located between lag 4 inner walls and the outer wall, strengthens cable radial strength and toughness, and double-deck helical structure avoids the ice cone to pierce through the cable. The outer side of the protective sleeve 4 is provided with a shielding layer 5 in a winding mode, the winding direction of the shielding layer 5 is the same as that of the outer wall of the protective sleeve 4, the outer side of the shielding layer 5 is provided with an outer sheath 6 in a winding mode, and a cold insulation layer 61 is arranged in the outer sheath 6. The cold insulation layer 61 is made of high-density polyethylene, the outer sheath 6 is made of environment-friendly fluoroplastic, the working time of the cable in low-temperature, high-oil-stain and high-humidity environments for a long time is prolonged, the polyimide film is arranged on the outer side of the outer sheath 6, the coverage range is wide, the requirement of one hundred degrees to two or three hundred degrees below zero can be met, and the cold insulation layer has excellent thermal stability, corrosion resistance and mechanical performance. The double-layer structure of the polyimide film and the cold insulation layer 61 reduces the heat conductivity coefficient, greatly improves the cold resistance of the cable, simultaneously has strong toughness and tensile resistance when the cable transmits electricity in extremely cold regions, cannot be broken and damaged due to the gravity influence of ice cones formed by solidification of natural ice water, prevents rain and snow from entering and causing short circuit, ensures electric power transmission, avoids economic loss, and is favorable for popularization.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a flexible cold-resistant cable, includes many sinle silks, its characterized in that: an insulation sleeve is wound on the outer side of the wire core, and a cable core is formed by twisting a plurality of insulation sleeves; the utility model discloses a cable core, including the cable core, the cable core outside is around being equipped with the inner sheath, the inner sheath outside is around being equipped with the lag, be equipped with the annular chamber in the lag and be equipped with the heat preservation in the annular chamber, the lag outside is around being equipped with the shielding layer, the shielding layer outside is around being equipped with the oversheath, be equipped with cold insulation layer in the oversheath, the oversheath outside is equipped with the polyimide film.

2. The flexible cold-resistant cable according to claim 1, wherein: the wire core is made of tin-plated copper-aluminum alloy wires.

3. The flexible cold-resistant cable according to claim 1, wherein: the insulating sleeve is made of polyether-ether-ketone.

4. The flexible cold-resistant cable according to claim 1, wherein: and a gap between the cable core and the inner wall of the inner sheath is filled with a flame-retardant material, and the flame-retardant material is made of glass fiber yarns.

5. The flexible cold-resistant cable according to claim 1, wherein: the lag is double-deck helical structure and adopts the silicon rubber material, and double-deck helical structure middle part is equipped with logical groove, the inner sheath is located logical inslot, the annular chamber is located between lag inner wall and the outer wall.

6. The flexible cold-resistant cable according to claim 1, wherein: the heat-insulating layer is made of polystyrene foam.

7. The flexible cold-resistant cable according to claim 1, wherein: the cold insulation layer is made of high-density polyethylene, and the outer sheath is made of environment-friendly fluoroplastic.