CN216562587U

CN216562587U - Low-voltage shielding aluminum alloy power cable

Info

Publication number: CN216562587U
Application number: CN202220009868.8U
Authority: CN
Inventors: 巫春生; 万长东; 张家文; 毕亮亮; 胡宏生
Original assignee: Anhui Dujiang Cable Group Co Ltd
Current assignee: Anhui Dujiang Cable Group Co Ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-05-17
Anticipated expiration: 2032-01-05

Abstract

The utility model discloses a low-voltage shielding aluminum alloy power cable, which belongs to the technical field of cables, wherein a plurality of cable core bundles are arranged in an inner sheath at equal intervals, a metal shielding layer and an outer sheath are sequentially sleeved outside the inner sheath, annular cavity I which corresponds to the cable core bundles one by one and is used for containing the corresponding cable core bundles are arranged in the inner sheath, and a first radiating hole which is arranged on the inner sheath and is respectively communicated with the corresponding annular cavity I and the metal shielding layer at two ends is arranged on each annular cavity I. According to the cable core bundle protection device, the cable core bundle is located in the first annular cavity, the inner jacket is provided with the first radiating holes, two ends of the first radiating holes are respectively communicated with the first annular cavity and the metal shielding layer, the first radiating holes are arranged to transfer heat around the cable core bundle located in the first annular cavity to the metal shielding layer, and the metal has a good heat conduction effect to conduct heat around the cable core bundle rapidly, so that the influence of excessive heat around the cable core bundle on the cable core bundle is avoided, and the cable core bundle is protected.

Description

Low-voltage shielding aluminum alloy power cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-voltage shielding aluminum alloy power cable.

Background

The cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like, wherein the aluminum alloy power cable is a novel material power cable which takes AA8030 series aluminum alloy materials as conductors and adopts advanced technologies such as a special roll forming molded line stranding production process and annealing treatment, and the aluminum alloy power cable also has low voltage and high voltage.

Although the existing aluminum alloy cable has good flexibility, the aluminum alloy conductor can generate a large amount of heat under long-time work, and the cross-sectional area of the aluminum alloy conductor can be influenced due to the fact that the heat cannot be timely and effectively discharged, so that the use safety of the aluminum alloy cable is influenced.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to provide a low-voltage shielding aluminum alloy power cable to solve the problems in the background technology.

2. Technical scheme

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a low pressure shielding aluminum alloy power cable, includes the inner sheath, equidistant a plurality of cable core bundles of being equipped with in the inner sheath, and the outside of inner sheath overlaps in proper order and is equipped with metal shielding layer and oversheath, the annular chamber one that just is used for holding corresponding cable core bundle is seted up with cable core bundle one-to-one, every is offered to the inside of inner sheath the annular chamber one is gone up and all is equipped with the louvre one of seting up in the inner sheath and both ends respectively hold chamber one, metal shielding layer intercommunication with corresponding annular.

Furthermore, each cable core bundle comprises an aluminum alloy wire, an insulating layer coated outside the aluminum alloy wire and an armor layer coated outside the insulating layer.

Furthermore, a plurality of strip-shaped bulges are arranged on the inner wall of each annular cavity I at equal intervals along the length direction of the annular cavity I, and each strip-shaped bulge is uniformly contacted with the outer wall of the armor layer.

Furthermore, at least two groups of first heat dissipation holes are formed in the length direction of each annular accommodating cavity I, and at least two heat dissipation holes are formed in each group of first heat dissipation holes.

Further, the center department of inner sheath has seted up the annular and has held chamber two, and the annular holds the inside in chamber two and be equipped with thermal-insulated support, set up the breach with cable core bundle one-to-one on the thermal-insulated support, every impartial interval is equipped with the louvre two of seting up on the inner sheath and with corresponding breach intercommunication on the length direction that the annular held chamber one, equidistant being equipped with on the length direction that the annular held chamber two is seted up on the inner sheath and with the louvre three of breach one-to-one, and the louvre three of the both ends of every louvre three respectively with corresponding breach, metallic shield intercommunication.

Still further, the heat insulating support is made of a rubber material.

Further, the inner sheath is made of soft rubber materials.

3. Advantageous effects

1. According to the cable core bundle protection device, the cable core bundle is located in the first annular cavity, the inner sheath is provided with the first heat dissipation hole, two ends of the first heat dissipation hole are respectively communicated with the first annular cavity and the metal shielding layer, the first heat dissipation hole can transfer heat around the cable core bundle located in the first annular cavity to the metal shielding layer, good heat conduction effect is achieved through metal, heat around the cable core bundle is conducted rapidly, influence on the cable core bundle due to overlarge heat around the cable core bundle is avoided, and the cable core bundle is protected.

2. According to the utility model, a plurality of strip-shaped bulges are arranged on the inner wall of each annular cavity I at equal intervals along the length direction of the annular cavity I, each strip-shaped bulge is uniformly contacted with the outer wall of an armor layer, and the armor layer is supported by the strip-shaped bulges, so that the whole cable core bundle can be positioned in the annular cavity I in an empty manner, heat around the cable core bundle can smoothly enter the heat dissipation hole I, and efficient heat dissipation of the cable core bundle is realized.

3. In the utility model, one ends of the third heat dissipation hole and the second heat dissipation hole are both communicated with the notch, and the other ends of the third heat dissipation hole and the second heat dissipation hole are respectively communicated with the first annular cavity and the metal shielding layer.

Drawings

FIG. 1 is a schematic front view of the internal structure of the present invention;

FIG. 2 is a schematic front view of the inner sheath;

FIG. 3 is a schematic front view of the internal structure of the cable core bundle;

FIG. 4 is a schematic view of a heat shield support.

Reference numerals: 1. an inner sheath; 2. a metal shielding layer; 3. an outer sheath; 4. a cable core bundle; 41. an aluminum alloy wire; 42. an insulating layer; 43. an armor layer; 5. a first annular cavity; 6. a strip-shaped bulge; 7. a first heat dissipation hole; 8. a second annular cavity; 9. a thermally insulating support; 10. a notch; 11. a second heat dissipation hole; 12. and (4) heat dissipation holes III.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1 and 2, the low-voltage shielding aluminum alloy power cable comprises an inner sheath 1, wherein a plurality of cable core bundles 4 are arranged in the inner sheath 1 at equal intervals, a metal shielding layer 2 and an outer sheath 3 are sequentially sleeved outside the inner sheath 1, the inner sheath 1 is made of a soft rubber material, the soft rubber material can be rubber, the outer sheath 3 can be made of a polyethylene material, annular accommodating chambers 5 which correspond to the cable core bundles 4 one by one and are used for accommodating the corresponding cable core bundles 4 are formed in the inner sheath 1, each annular accommodating chamber 5 is provided with heat dissipation holes 7 which are formed in the inner sheath 1 and are respectively communicated with the corresponding annular accommodating chamber 5 and the metal shielding layer 2 at two ends, at least two groups of heat dissipation holes 7 are formed in the length direction of each annular accommodating chamber 5, at least two groups of heat dissipation holes 7 are formed in each group of heat dissipation holes 7, and heat around the cable core bundles 4 in the annular accommodating chamber 5 can be transferred to the metal shielding layer 2 through one 7, the metal has a good heat conduction effect, and the heat around the cable core bundle 4 is quickly conducted, so that the influence on the cable core bundle 4 due to the overlarge heat around the cable core bundle 4 is avoided, and the protection on the cable core bundle 4 is realized;

as shown in fig. 3, each cable core bundle 4 includes an aluminum alloy wire 41, an insulating layer 42 covering the aluminum alloy wire 41, and an armor layer 43 covering the insulating layer 42, the insulating layer 42 is configured to insulate and protect the aluminum alloy wire 41, and the armor layer 43 is configured to enhance the strength of the aluminum alloy wire 41, so as to improve the compressive strength of the cable;

as shown in fig. 1 and 2, a plurality of strip-shaped protrusions 6 are arranged on the inner wall of each annular cavity one 5 at equal intervals along the length direction of the annular cavity, each strip-shaped protrusion 6 is uniformly contacted with the outer wall of the armor layer 43, and the entire cable core bundle 4 can be positioned in the annular cavity one 5 in an empty manner by supporting the armor layer 43 by the strip-shaped protrusions 6, so that heat around the cable core bundle 4 can smoothly enter the heat dissipation hole one 7, and efficient heat dissipation of the cable core bundle 4 is realized;

as shown in fig. 1 and 4, an annular accommodating chamber two 8 is formed in the center of the inner sheath 1, a heat insulating support 9 is disposed inside the annular accommodating chamber two 8, the heat insulating support 9 is made of rubber material, the heat insulating support 9 is fixedly connected with the inner wall of the annular accommodating chamber two 8, the fixing mode can be adhesion or other modes, notches 10 corresponding to the cable core bundles 4 one by one are formed in the heat insulating support 9, two heat dissipation holes 11 which are formed in the inner sheath 1 and communicated with the corresponding notches 10 are formed in the annular accommodating chamber one 5 at equal intervals in the length direction, three heat dissipation holes 12 which are formed in the inner sheath 1 and correspond to the notches 10 one by one are formed in the annular accommodating chamber two 8 at equal intervals in the length direction, two ends of each heat dissipation hole three 12 are respectively communicated with the corresponding notch 10 and the metal shielding layer 2, one end of each heat dissipation hole three 12 and one end of each heat dissipation hole two 11 are communicated with the notches 10, the other ends of the heat dissipation hole III 12 and the heat dissipation hole II 11 are respectively communicated with the annular cavity I5 and the metal shielding layer 2, and the arrangement can be used for conducting guiding type heat dissipation on heat around the cable core bundle 4 again so as to enhance the heat dissipation performance of the cable.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a low pressure shielding aluminum alloy power cable, includes inner sheath (1), equidistant a plurality of cable core bundles (4) of being equipped with in inner sheath (1), and the outside of inner sheath (1) overlaps in proper order and is equipped with metal shielding layer (2) and oversheath (3), a serial communication port, the annular that just is used for holding corresponding cable core bundle (4) with cable core bundle (4) one-to-one is seted up to the inside of inner sheath (1) holds chamber (5), every the annular holds and all is equipped with on chamber (5) and both ends hold louvre (7) that chamber (5), metal shielding layer (2) communicate with corresponding annular respectively on inner sheath (1).

2. A low-voltage shielded aluminium alloy power cable according to claim 1, characterized in that each cable core bundle (4) comprises an aluminium alloy conductor (41), an insulating layer (42) covering the outside of the aluminium alloy conductor (41), and an armouring layer (43) covering the outside of the insulating layer (42).

3. The low-voltage shielding aluminum alloy power cable as claimed in claim 2, wherein a plurality of strip-shaped protrusions (6) are arranged on the inner wall of each annular accommodating cavity I (5) at equal intervals along the length direction of the annular accommodating cavity I, and each strip-shaped protrusion (6) is uniformly contacted with the outer wall of the armor layer (43).

4. The low-voltage shielding aluminum alloy power cable as claimed in claim 1, wherein each annular cavity I (5) is provided with at least two groups of heat dissipation holes I (7) in the length direction, and each group of heat dissipation holes I (7) is provided with at least two.

5. The low-voltage shielding aluminum alloy power cable as claimed in claim 1, wherein the inner sheath (1) is provided with a second annular cavity (8) at the center, and a heat insulation support (9) is arranged inside the annular cavity II (8), notches (10) which are in one-to-one correspondence with the cable core bundles (4) are formed in the heat insulation support (9), heat dissipation holes II (11) which are formed in the inner sheath (1) and communicated with the corresponding notches (10) are arranged in the annular cavity I (5) at equal intervals in the length direction, the annular cavity II (8) is provided with three radiating holes (12) which are arranged on the inner sheath (1) and correspond to the notches (10) one by one at equal intervals in the length direction, and two ends of each heat dissipation hole III (12) are respectively communicated with the corresponding notch (10) and the metal shielding layer (2).

6. Low voltage shielded aluminium alloy power cable according to claim 5, characterized in that the heat insulating support (9) is made of rubber material.

7. The low voltage shielded aluminum alloy power cable according to claim 1, characterized in that the inner sheath (1) is made of soft rubber material.