CN211265099U

CN211265099U - Super long-life high temperature resistant power cable

Info

Publication number: CN211265099U
Application number: CN201922502316.1U
Authority: CN
Inventors: 孙雪平; 单方强
Original assignee: Wuhu Dinghan Rail Transportation Equipment Co ltd
Current assignee: Wuhu Dinghan Rail Transportation Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-14
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an ultra-long life high temperature resistant power cable, which comprises a cable core, an inner extrusion coating layer, a shielding layer, an outer extrusion coating layer, a high temperature resistant layer and a sheath layer, wherein the inner extrusion coating layer, the shielding layer, the outer extrusion coating layer, the high temperature resistant layer and the sheath layer are sequentially wrapped outside the cable core; a plurality of first slots are distributed on the outer extrusion coating, the length direction of the first slots is consistent with the axial direction of the cable, and thermal expansion bodies are filled in the first slots; a plurality of second slots are distributed on the high-temperature resistant layer, the length direction of the second slots is consistent with the axial direction of the cable, the second slots are in one-to-one correspondence with the first slots respectively, and the length of the second slots is the same as that of the first slots. The utility model discloses a set up first fluting, second fluting, the thermal expansion body, heat dissipation needle and louvre, when the inside heat of cable was too high, the thermal expansion body expanded along first fluting, second fluting, and outside transmission heat when expanding to the certain degree, the heat dissipation needle passed the louvre, and the louvre is opened and is dispelled the heat for the radiating rate improves the life of cable.

Description

Super long-life high temperature resistant power cable

Technical Field

The utility model relates to a power cable technical field especially relates to a super long-life high temperature resistant power cable.

Background

In recent years, the rail transit industry in China is rapidly developed, and the demand of the rail transit industry for cables is continuously increased. Due to the requirements of safety and comfort of the rail vehicle, the cable for the electrical equipment of the rail vehicle needs certain special requirements. Not only the electrical performance requirements are to be met, but also the high temperature resistance and other performances are sometimes required.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem who exists among the background art, the utility model provides a high temperature resistant power cable of overlength life.

The utility model provides an ultra-long life high temperature resistant power cable, which comprises a cable core, an inner extrusion layer, a shielding layer, an outer extrusion layer, a high temperature resistant layer and a sheath layer, wherein the inner extrusion layer, the shielding layer, the outer extrusion layer, the high temperature resistant layer and the sheath layer are sequentially wrapped outside the cable core; a plurality of first slots are distributed on the outer extrusion coating, the length direction of the first slots is consistent with the axial direction of the cable, and thermal expansion bodies are filled in the first slots; a plurality of second slots are distributed on the high-temperature resistant layer, the length direction of the second slots is consistent with the axial direction of the cable, the second slots are in one-to-one correspondence with the first slots respectively, and the length of the second slots is the same as that of the first slots.

Preferably, the sheath layer is provided with a plurality of heat dissipation holes communicated with the second slots at positions opposite to the second slots, and the heat dissipation holes are closed in a natural state.

Preferably, a plurality of heat dissipation needles are arranged on the outer side of the heated expansion body at intervals along the length direction of the heated expansion body, and the plurality of heat dissipation needles are respectively arranged in one-to-one correspondence with the plurality of heat dissipation holes in the outer side of the second groove.

Preferably, the cable core includes many sinle silks of arranging along the cable axial, and the sinle silk includes the conductor and wraps up at the outside insulating layer of conductor, and the conductor is formed by the transposition of many tinned copper wires.

Preferably, the gaps between the plurality of wire cores and the inner extrusion coating are filled with high-temperature resistant materials.

Preferably, a high-temperature-resistant rope is arranged between any two adjacent wire cores in the high-temperature-resistant material and is arranged along the axial direction of the cable.

The utility model provides an ultra-long life high temperature resistant power cable, through pack the high temperature resistant material and set up many high temperature resistant ropes in the high temperature resistant material between many sinle silks, can improve the high temperature resistant performance of cable inner structure, improve cable life; meanwhile, a high-temperature-resistant layer is arranged outside the cable, so that the high-temperature-resistant performance of the external structure of the cable is improved; and, through setting up first fluting, second fluting, the thermal expansion body, heat dissipation needle and louvre, when the inside heat of cable was too high, the thermal expansion body expanded along first fluting, second fluting, outside transmission heat, when expanding to a certain extent, the heat dissipation needle passed the louvre for the louvre is opened and is dispelled the heat, accelerates the radiating rate, improves the life of cable.

Drawings

Fig. 1 is the utility model provides a structural schematic diagram of super long-life high temperature resistant power cable.

Detailed Description

Referring to fig. 1, the utility model provides an ultra-long life high temperature resistant power cable, which comprises a cable core, an inner extrusion coating layer 1, a shielding layer 2, an outer extrusion coating layer 3, a high temperature resistant layer 4 and a sheath layer 5, wherein the inner extrusion coating layer, the shielding layer, the outer extrusion coating layer 3, the high temperature resistant layer and the sheath layer are sequentially wrapped outside the cable core; wherein:

the cable core includes many sinle silk 6 of arranging along the cable axial, and sinle silk 6 includes the conductor and wraps up at the outside insulating layer of conductor, and the conductor is formed by the transposition of many tinned wire. And high-temperature-resistant materials 7 are filled in gaps between the wire cores 6 and the inner extrusion coating 1. The position between any two adjacent sinle silks 6 in the high temperature resistant material 7 all is equipped with a high temperature resistant rope 8, and high temperature resistant rope 8 arranges along the cable axial.

A plurality of first slots 31 are distributed on the outer extrusion coating 3, the length direction of the first slots 31 is consistent with the axial direction of the cable, and the first slots 31 are filled with heated expansion bodies 32.

A plurality of second slots 41 are distributed on the high temperature resistant layer 4, the length direction of the second slots 41 is consistent with the axial direction of the cable, the plurality of second slots 41 are respectively in one-to-one correspondence with the plurality of first slots 31, and the length of the second slots 41 is the same as that of the first slots 31.

A plurality of heat dissipation holes 51 communicated with the second slots 41 are formed in the sheath layer 5 at positions opposite to the second slots 41, and the heat dissipation holes 51 are in a closed state in a natural state. A plurality of heat dissipation pins 33 are arranged at intervals along the length direction of the outer side of the thermal expansion body 32, and the plurality of heat dissipation pins 33 are respectively arranged in one-to-one correspondence with the plurality of heat dissipation holes 51 on the outer side of the second slot 41.

The utility model can improve the high temperature resistance of the internal structure of the cable and prolong the service life of the cable by filling the high temperature resistant material 7 among the plurality of wire cores 6 and arranging the plurality of high temperature resistant ropes 8 in the high temperature resistant material 7; meanwhile, the high-temperature resistant layer 4 is arranged outside the cable, so that the high-temperature resistance of the external structure of the cable is improved; and, through setting up first fluting 31, second fluting 41, the thermal expansion body 32, radiating pin 33 and louvre 51, when the inside heat of cable was too high, the thermal expansion body expanded along first fluting 31, second fluting 41, outside transmission heat, when expanding to a certain extent, louvre 51 was passed to radiating pin 33 for louvre 51 is opened and is dispelled the heat, accelerates the radiating rate, improves the life of cable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The power cable with the ultra-long service life and the high temperature resistance is characterized by comprising a cable core, and an inner extrusion coating layer (1), a shielding layer (2), an outer extrusion coating layer (3), a high temperature resistance layer (4) and a sheath layer (5) which are sequentially wrapped outside the cable core; a plurality of first slots (31) are distributed on the outer extrusion cladding (3), the length direction of the first slots (31) is consistent with the axial direction of the cable, and a heat expansion body (32) is filled in the first slots (31); a plurality of second slots (41) are distributed on the high-temperature resistant layer (4), the length direction of the second slots (41) is consistent with the axial direction of the cable, the second slots (41) are respectively in one-to-one correspondence with the first slots (31), and the length of the second slots (41) is the same as that of the first slots (31).

2. The ultra-long-life high-temperature-resistant power cable according to claim 1, wherein a plurality of heat dissipation holes (51) communicated with the second slots (41) are formed in the sheath layer (5) at positions opposite to the second slots (41), and the heat dissipation holes (51) are in a closed state in a natural state.

3. The ultra-long-life high-temperature-resistant power cable according to claim 2, wherein a plurality of heat dissipation pins (33) are arranged at intervals on the outer side of the thermal expansion body (32) along the length direction thereof, and the plurality of heat dissipation pins (33) are respectively arranged in one-to-one correspondence with a plurality of heat dissipation holes (51) on the outer side of the second slot (41).

4. The ultra-long-life high-temperature-resistant power cable according to any one of claims 1 to 3, wherein the cable core comprises a plurality of wire cores (6) arranged along the axial direction of the cable, the wire cores (6) comprise conductors and insulating layers wrapped outside the conductors, and the conductors are formed by stranding a plurality of tinned copper wires.

5. The ultra-long-life high-temperature-resistant power cable according to claim 4, wherein gaps between the plurality of wire cores (6) and the inner extrusion coating (1) are filled with high-temperature-resistant materials (7).

6. The ultra-long-life high-temperature-resistant power cable according to claim 5, wherein a high-temperature-resistant rope (8) is arranged between any two adjacent wire cores (6) in the high-temperature-resistant material (7), and the high-temperature-resistant rope (8) is arranged along the axial direction of the cable.