CN214588085U

CN214588085U - High-reliability polyvinyl chloride insulation flexible cable

Info

Publication number: CN214588085U
Application number: CN202121134382.9U
Authority: CN
Inventors: 黄良泽; 陈旭靖; 张信苹; 石丰富
Original assignee: Yunnan Dongjin Wire Cable Manufacture Co ltd
Current assignee: Yunnan Dongjin Cable Group Co.,Ltd.
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-11-02
Anticipated expiration: 2031-05-25

Abstract

The utility model belongs to the technical field of high reliability cables, in particular to a high reliability polyvinyl chloride insulation flexible cable; the cable comprises cable cores arranged in parallel and a protective sleeve arranged outside the cable cores, wherein an electrostatic shielding layer is arranged on the outer surface of each cable core, an inner insulating layer is arranged outside the electrostatic shielding layer, and the protective sleeve sequentially comprises an inner flame retardant coating, an outer insulating layer, an outer flame retardant coating, a heat dissipation layer and an anti-corrosion layer from inside to outside; has better insulating property.

Description

High-reliability polyvinyl chloride insulation flexible cable

Technical Field

The utility model belongs to the technical field of the high reliability cable, concretely relates to high reliability polyvinyl chloride insulated flexible cable.

Background

The cable is usually a cable similar to a rope formed by twisting several or several groups of wires, each group of wires are insulated with each other and are usually twisted around a center, the whole outer surface is wrapped with a highly insulated covering layer, and a plurality of cables are erected in the air or installed underground or underwater and are used for telecommunication or power transmission.

However, the existing cable has poor insulating property and low safety performance in use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high reliability polyvinyl chloride insulated flexible cable has better insulating properties.

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

the utility model provides a high reliability polyvinyl chloride insulated flexible cable, includes mutual parallel arrangement's cable inner core and sets up the protective sheath in the cable inner core outside, and every cable inner core surface is provided with the electrostatic shield layer, and the electrostatic shield layer is provided with the inner insulating layer outward, and the protective sheath includes interior flame retardant coating, outer insulating layer, outer flame retardant coating, heat dissipation layer and anticorrosive coating from inside to outside in proper order.

Further, the heat dissipation layer comprises an inner heat dissipation layer and an outer heat dissipation layer, a slotted hole is formed between the inner heat dissipation layer and the outer heat dissipation layer, and the slotted hole is formed along the surface of the inner heat dissipation layer and embedded in the outer heat dissipation layer.

Further, the thickness of the outer heat dissipation layer is larger than that of the inner heat dissipation layer.

Furthermore, the outer surfaces of the protective sleeve and the cable inner core are filled with anti-extrusion layers, and the anti-extrusion layers are high-temperature resistant layers.

Furthermore, the surface of the anticorrosion layer adopts a sawtooth structure design.

Further, the anticorrosive coating includes the epoxy powder coating layer of bottom, middle adhesive layer and outside polyethylene layer.

Furthermore, anti-pulling belts which are arranged in a staggered mode are arranged on the inner insulating layer.

Compared with the prior art, the utility model discloses one of following beneficial effect has at least:

1. the utility model discloses be provided with the inner insulating layer at the cable inner core surface earlier to be provided with the outer insulating layer on the protective sheath, have better insulating effect.

2. The heat dissipation layer comprises an inner heat dissipation layer and an outer heat dissipation layer, and has a good heat dissipation effect.

3. The anti-extrusion layer is arranged outside the protective sleeve and the cable inner core, so that a good anti-extrusion effect is achieved, and the damage to the inner cable inner core is avoided.

4. The surface of the anti-corrosion layer adopts a sawtooth structure design and comprises an epoxy powder coating layer on the bottom layer, a middle adhesive layer and an external polyethylene layer, so that the anti-corrosion layer has better anti-corrosion performance.

5. The inner insulating layer is provided with the anti-pulling belts which are arranged in a staggered mode, and the anti-pulling belts have good anti-tearing performance.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the structure of the heat dissipation layer of the present invention.

In the figure, 1-cable core; 2-an electrostatic shielding layer; 3-an inner insulating layer; 4-inner refractory layer; 5-an outer insulating layer; 6-outer fire-resistant layer, 7-heat dissipation layer, 8-anticorrosive layer, 9-inner heat dissipation layer, 10-outer heat dissipation layer, 11-slotted hole and 12-anti-extrusion layer.

Detailed Description

As shown in fig. 1 to 3, in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The utility model provides an insulating flexible cable of high reliability polyvinyl chloride, includes mutual parallel arrangement's cable inner core 1 and sets up at the outside protective sheath of cable inner core 1, its characterized in that: every 1 surface of cable inner core is provided with electrostatic shielding layer 2, and electrostatic shielding layer 2 is provided with inner insulating layer 3 outward, and the protective sheath includes interior flame retardant coating 4, outer insulating layer 5, outer flame retardant coating 6, heat dissipation layer 7 and anticorrosive coating 8 from inside to outside in proper order, the utility model discloses first be provided with inner insulating layer 3 at 1 surface of cable inner core to be provided with outer insulating layer 5 on the protective sheath, better insulating effect has.

Example 2

On the basis of embodiment 1, the heat dissipation layer 7 includes an inner heat dissipation layer 9 and an outer heat dissipation layer 10, a slotted hole 11 is arranged between the inner heat dissipation layer 9 and the outer heat dissipation layer 10, the slotted hole 11 is arranged along the surface of the inner heat dissipation layer 9 and embedded in the outer heat dissipation layer 10, and the thickness of the outer heat dissipation layer 10 is larger than that of the inner heat dissipation layer 9, so that a good heat dissipation effect is achieved.

Example 3

On the basis of embodiment 1, the surface of protective sheath and cable inner core 1 is filled and is provided with anti extrusion layer 12 to anti extrusion layer 12 is high temperature resistant layer, has better anti extrusion effect, avoids damaging inside cable inner core.

Example 4

On embodiment 1's basis, 8 surfaces of anticorrosive coating adopt sawtooth structural design, and anticorrosive coating 8 includes the epoxy powder coating layer on bottom, middle adhesive layer and outside polyethylene layer, has better corrosion protection.

Example 5

On the basis of the embodiment 1, the inner insulating layer 3 is provided with the anti-pulling strips which are arranged in a staggered mode, and the anti-pulling strips have good anti-tearing performance.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides an insulating flexible cable of high reliability polyvinyl chloride, includes cable inner core (1) and the protective sheath of setting in cable inner core (1) outside of mutual parallel arrangement, its characterized in that: the outer surface of each cable inner core (1) is provided with an electrostatic shielding layer (2), an inner insulating layer (3) is arranged outside the electrostatic shielding layer (2), and the protective sleeve sequentially comprises an inner flame retardant coating (4), an outer insulating layer (5), an outer flame retardant coating (6), a heat dissipation layer (7) and an anticorrosive coating (8) from inside to outside.

2. The high-reliability polyvinyl chloride insulated flexible cable according to claim 1, wherein: the heat dissipation layer (7) comprises an inner heat dissipation layer (9) and an outer heat dissipation layer (10), a slotted hole (11) is formed between the inner heat dissipation layer (9) and the outer heat dissipation layer (10), and the slotted hole (11) is formed along the surface of the inner heat dissipation layer (9) and embedded in the outer heat dissipation layer (10).

3. The high-reliability polyvinyl chloride insulated flexible cable according to claim 2, wherein: the thickness of the outer heat dissipation layer (10) is larger than that of the inner heat dissipation layer (9).

4. The high-reliability polyvinyl chloride insulated flexible cable according to claim 1, wherein: the outer surfaces of the protective sleeve and the cable inner core (1) are filled with an anti-extrusion layer (12), and the anti-extrusion layer (12) is a high-temperature-resistant layer.

5. The high-reliability polyvinyl chloride insulated flexible cable according to claim 1, wherein: the surface of the anticorrosive layer (8) adopts a sawtooth structure design.

6. The high-reliability polyvinyl chloride insulated flexible cable according to claim 1, wherein: the anticorrosive layer (8) comprises an epoxy powder coating layer on the bottom layer, a middle adhesive layer and an outer polyethylene layer.

7. The high-reliability polyvinyl chloride insulated flexible cable according to claim 1, wherein: the inner insulating layer (3) is provided with anti-pulling belts which are arranged in a staggered mode.