CN215834308U

CN215834308U - Crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheath power cable

Info

Publication number: CN215834308U
Application number: CN202121839448.4U
Authority: CN
Inventors: 卢英斌; 卢蛟; 黄伟; 叶银珠
Original assignee: Anhui Zhongtong Cable Technology Co ltd
Current assignee: Anhui Zhongtong Cable Technology Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-02-15
Anticipated expiration: 2031-08-06

Abstract

The utility model provides a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheath power cable which comprises a heat dissipation part and a compression-resistant elastic ring, wherein the heat dissipation part is arranged in a cable core in a cross shape, the cable core is uniformly divided into a plurality of wire core arranging cavities for fixing the compression-resistant elastic rings, the compression-resistant elastic rings are oval annular bodies with hollow interiors, the outer side wall of the compression-resistant elastic ring is internally tangent to the alkali-free glass fiber tape wrapping layer, the periphery of the alkali-free glass fiber tape wrapping layer is coated with the halogen-free low-smoke flame-retardant polyolefin outer sheath, the halogen-free low-smoke flame-retardant polyolefin outer sheath is provided with a plurality of heat dissipation holes which are uniformly distributed along the circumferential direction by taking the cable core as the center, one end of the heat dissipation hole is communicated with the outside, the other end of the heat dissipation hole penetrates through the wrapping layer of the alkali-free glass fiber tape and is communicated with the heat dissipation piece, the inside of resistance to compression elastic loop is equipped with insulating sinle silk and elastic component, and elastic component and insulating sinle silk elastic connection are passed through at the both ends of resistance to compression elastic loop.

Description

Crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheath power cable

Technical Field

The utility model relates to the technical field of electric wires and cables, in particular to a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheathed power cable.

Background

The cable is a commonly used conductor in daily life, and transmits electric power or information from one place to another place, at present, along with the development of society, the power consumption is increased, the requirements on the cable are higher and higher, the requirements such as heat dissipation, pressure resistance and the like of the cable are gradually paid attention by people, but the heat dissipation and the pressure resistance of the existing cable are not ideal enough at present, and the requirements of users cannot be met.

Therefore, the utility model provides a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheathed power cable to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheathed power cable.

In order to solve the technical problems, the utility model provides the following technical scheme: a crosslinked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheathed power cable comprises a heat dissipation piece and a compression-resistant elastic ring, wherein the heat dissipation piece is arranged in a cable core in a cross shape, the cable core is uniformly divided into a plurality of wire core arranging cavities for fixing the compression-resistant elastic rings, the compression-resistant elastic rings are oval annular bodies with hollow interiors, the outer side wall of the compression-resistant elastic ring is internally tangent to the alkali-free glass fiber tape wrapping layer, the periphery of the alkali-free glass fiber tape wrapping layer is coated with the halogen-free low-smoke flame-retardant polyolefin outer sheath, the halogen-free low-smoke flame-retardant polyolefin outer sheath is provided with a plurality of heat dissipation holes which are uniformly distributed along the circumferential direction by taking the cable core as the center, one end of the heat dissipation hole is communicated with the outside, the other end of the heat dissipation hole penetrates through the wrapping layer of the alkali-free glass fiber tape and is communicated with the heat dissipation piece, the inside of resistance to compression elastic loop is equipped with insulating sinle silk and elastic component, and elastic component and insulating sinle silk elastic connection are passed through at the both ends of resistance to compression elastic loop.

As a preferred technical scheme, the heat dissipation part is composed of four T-shaped heat dissipation pipe fittings, each T-shaped heat dissipation pipe fitting comprises a heat dissipation sleeve and a heat dissipation arc-shaped part, a heat dissipation channel is arranged in each heat dissipation sleeve, a heat dissipation cavity is arranged in each heat dissipation arc-shaped part, each heat dissipation channel is communicated with the corresponding heat dissipation cavity, the center of the outer wall of each heat dissipation arc-shaped part is arranged in a plane, and an air outlet communicated with the heat dissipation holes is formed in the outer side wall of the plane.

As a preferred technical scheme of the utility model, two pairs of arc-shaped fixing sleeves for fixing the insulated wire cores are symmetrically arranged on two side walls in the compression-resistant elastic ring.

As a preferable technical solution of the present invention, the insulated wire core includes a copper conductor and a crosslinked polyethylene insulated layer coated on the periphery of the copper conductor.

As a preferable technical scheme of the utility model, the elastic assembly comprises two hinged arms and a return spring, one end of each hinged arm is rotatably arranged on a mounting piece fixedly arranged at two ends of the inner side wall of the compression-resistant elastic ring through a rotating shaft, the other end of each hinged arm is divided into arc-shaped fixing sleeves symmetrically arranged on two side walls in the compression-resistant elastic ring, and the return spring is fixedly arranged between the two hinged arms.

According to a preferable technical scheme of the utility model, a dust-free rock wool flame-retardant filling rope is filled in a gap between the wire core arrangement cavity and the alkali-free glass fiber tape wrapping layer.

The utility model has the following beneficial effects: according to the cross-linked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheath power cable provided by the utility model, the heat dissipation performance of the cable is favorably improved through the arranged heat dissipation part and the heat dissipation holes, the heat generated in the cable due to work is effectively dissipated, and the heat dissipation effect is good; through the resistance to compression elastic ring and the elastic component that set up again, can strengthen the compressive property of cable body, play good guard action to the cable core, receive the extrusion back when the cable, the resistance to compression elastic ring and elastic component can offset great pressure, protect inside insulation core not receive the damage, improve the compressive property of cable, prolong its life.

The utility model will be explained in more detail below with reference to the drawings and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

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

FIG. 2 is a schematic view of the compression-resistant elastic ring of the present invention;

FIG. 3 is a schematic view of a T-shaped heat dissipation tube of the present invention;

reference numbers in the figures: 1. a heat sink; 2. a compression-resistant elastic ring; 3. a wire core accommodating cavity; 4. wrapping the alkali-free glass fiber tape; 5. a halogen-free low-smoke flame-retardant polyolefin outer sheath; 6. heat dissipation holes; 7. a heat-dissipating sleeve; 8. a heat dissipating arcuate member; 9. a heat dissipation channel; 10. a heat dissipation cavity; 11. an air outlet; 12. an arc-shaped fixing sleeve; 13. a copper conductor; 14. a crosslinked polyethylene insulating layer; 15. an articulated arm; 16. a return spring; 17. a mounting member; 18. dustless rock wool fire-retardant packing rope.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1-3, the power cable with the crosslinked polyethylene insulating halogen-free low-smoke flame-retardant polyolefin sheath provided by the utility model comprises a heat dissipation member 1 and a compression-resistant elastic ring 2, wherein the heat dissipation member 1 is arranged in a cross shape in a cable core, the cable core is equally divided into a plurality of cable core installation cavities 3 for fixing the compression-resistant elastic ring 2, the compression-resistant elastic ring 2 is an oval ring body with a hollow interior, the outer side wall of the compression-resistant elastic ring 2 is internally tangent to an alkali-free glass fiber tape wrapping layer 4, the periphery of the alkali-free glass fiber tape wrapping layer 4 is coated with a halogen-free low-smoke flame-retardant polyolefin outer sheath 5, the halogen-free low-smoke flame-retardant polyolefin outer sheath 5 is provided with a plurality of heat dissipation holes 6, the heat dissipation holes 6 are uniformly arranged along the circumferential direction with the cable core as the center, one end of each heat dissipation hole 6 is communicated with the outside, and the other end of each heat dissipation member is communicated with the heat dissipation member 1 through the alkali-free glass fiber tape wrapping layer 4, the inside of resistance to compression elastic ring 2 is equipped with insulating sinle silk and elastic component, and elastic component and insulating sinle silk elastic connection are passed through at the both ends of resistance to compression elastic ring 2.

Further, heat dissipation piece 1 comprises four "T" font heat dissipation pipe fittings, "T" font heat dissipation pipe fitting includes heat dissipation sleeve pipe 7 and heat dissipation arc 8, be equipped with heat dissipation channel 9 in the heat dissipation sleeve pipe 7, be equipped with heat dissipation chamber 10 in the heat dissipation arc 8, heat dissipation channel 9 and heat dissipation chamber 10 intercommunication, and 8 outer wall centers of heat dissipation arc are the plane setting, set up the gas outlet 11 that communicates louvre 6 on this plane lateral wall, are favorable to improving the heat dispersion of cable, have dispelled the heat that the cable is inside because of work produces effectively, and the radiating effect is good.

Furthermore, two pairs of arc-shaped fixing sleeves 12 for fixing the insulated wire cores are symmetrically arranged on two side walls of the inner part of the compression-resistant elastic ring 2, so that the stability of the insulated wire cores is improved.

Further, the insulated wire core comprises a copper conductor 13 and a crosslinked polyethylene insulating layer 14 coated on the periphery of the copper conductor 13.

Further, elastic component includes two articulated arms 15 and a reset spring 16, two the one end of articulated arm 15 is rotated the dress through the pivot and is on the installed part 17 that 2 inside wall both ends of resistance to compression elastic ring set firmly, and the other end divide into on the fixed cover 12 of arc that is located 2 inside both sides wall symmetries of resistance to compression elastic ring and sets up, reset spring 16 sets firmly between two articulated arms 15, receives the extrusion back when the cable, and resistance to compression elastic ring 2 transmits elastic component with pressure, offsets great pressure by articulated arm 15 and reset spring 16, protects inside insulation core not to receive the damage, improves the compressive property of cable, has played good guard action to the cable core, prolongs its life.

Furthermore, a gap between the wire core placing cavity 3 and the alkali-free glass fiber tape lapping layer 4 is filled with a dust-free rock wool flame-retardant filling rope 18.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The power cable is characterized by comprising a heat radiating piece (1) and compression-resistant elastic rings (2), wherein the heat radiating piece (1) is arranged in the cable core in a cross shape, the cable core is equally divided into a plurality of core accommodating cavities (3) of the compression-resistant elastic rings (2), each compression-resistant elastic ring (2) is an oval annular body with a hollow inner part, the outer side wall of each compression-resistant elastic ring (2) is internally tangent to an alkali-free glass fiber tape wrapping layer (4), the periphery of each alkali-free glass fiber tape wrapping layer (4) is coated with a halogen-free low-smoke flame-retardant polyolefin outer sheath (5), the halogen-free low-smoke flame-retardant polyolefin outer sheath (5) is provided with a plurality of heat radiating holes (6), the heat radiating holes (6) are uniformly distributed along the circumferential direction by taking the cable core as the center, and one ends of the heat radiating holes (6) are communicated with the outside, the other end runs through alkali-free glass fiber tape and is linked together around covering (4) and radiating piece (1), the inside of resistance to compression elasticity circle (2) is equipped with insulating sinle silk and elastic component, and elastic component and insulating sinle silk elastic connection are passed through at the both ends of resistance to compression elasticity circle (2).

2. The power cable with the cross-linked polyethylene insulating, halogen-free, low-smoke, flame-retardant and polyolefin sheath according to claim 1, wherein the heat dissipation member (1) is composed of four T-shaped heat dissipation pipe members, each T-shaped heat dissipation pipe member comprises a heat dissipation sleeve (7) and a heat dissipation arc-shaped member (8), a heat dissipation channel (9) is arranged in each heat dissipation sleeve (7), a heat dissipation cavity (10) is arranged in each heat dissipation arc-shaped member (8), each heat dissipation channel (9) is communicated with the corresponding heat dissipation cavity (10), the center of the outer wall of each heat dissipation arc-shaped member (8) is arranged in a plane, and an air outlet (11) communicated with the heat dissipation holes (6) is formed in the outer side wall of the plane.

3. The power cable with the crosslinked polyethylene insulating halogen-free low-smoke flame-retardant polyolefin sheath as claimed in claim 1, wherein two pairs of arc-shaped fixing sleeves (12) for fixing the insulated wire core are symmetrically arranged on two inner side walls of the compression-resistant elastic ring (2).

4. The cross-linked polyethylene insulated halogen-free low-smoke flame-retardant polyolefin sheathed power cable according to claim 1, wherein the insulated wire core comprises a copper conductor (13) and a cross-linked polyethylene insulating layer (14) coated on the periphery of the copper conductor (13).

5. The power cable with the cross-linked polyethylene insulating, halogen-free, low-smoke and flame-retardant polyolefin sheath as claimed in claim 3, wherein the elastic assembly comprises two hinged arms (15) and a return spring (16), one end of each of the two hinged arms (15) is rotatably mounted on a mounting member (17) fixed at two ends of the inner side wall of the compression-resistant elastic ring (2) through a rotating shaft, the other end of each of the two hinged arms is divided into arc-shaped fixing sleeves (12) symmetrically arranged on two inner side walls of the compression-resistant elastic ring (2), and the return spring (16) is fixed between the two hinged arms (15).

6. The power cable with the cross-linked polyethylene insulating, halogen-free, low-smoke and flame-retardant polyolefin sheath according to claim 1, characterized in that a dust-free rock wool flame-retardant filling rope (18) is filled in a gap between the core accommodating cavity (3) and the alkali-free glass fiber tape wrapping layer (4).