CN218906492U

CN218906492U - Self-lubricating heat-conducting silicon core pipe

Info

Publication number: CN218906492U
Application number: CN202223102824.9U
Authority: CN
Inventors: 马鑫; 陈晓梅; 彭伏弟; 林知; 高洁; 林振宇
Original assignee: Fujian Aton Advanced Materials Technology Co ltd
Current assignee: Fujian Aton Advanced Materials Technology Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-04-25
Anticipated expiration: 2032-11-22

Abstract

The utility model provides a self-lubricating heat-conducting silicon core tube, which sequentially comprises a lubricating layer, a structural layer, a heat-conducting block, an outer layer and a color ribbon wire from inside to outside, wherein the heat-conducting area is increased, the friction area is reduced, and the cable passing performance is improved through the design of a circumferential continuous wavy structure of the lubricating layer; a plurality of heat conducting blocks are arranged between the structural layer and the outer layer, so that the heat conducting performance can be enhanced; the arc blocks of the structural layer improve the pressure resistance of the pipe body. The method has the advantages of simple implementation mode, strong practicability and good economic benefit.

Description

Self-lubricating heat-conducting silicon core pipe

Technical Field

The utility model belongs to the technical field of communication cable pipes, and particularly relates to a self-lubricating heat-conducting silicon core pipe.

Background

The silicon core tube is a current common wire and cable protective sleeve, especially for highway underground cable pipelines, the silicon core tube is of a double-layer structure, the outer layer is a polyethylene layer, the inner layer is a solid lubricating layer, and the solid lubricating layer contains silicon-based resin, so that the friction coefficient of the inner wall is greatly reduced, and the abrasion during the threading of the cable is reduced.

The silicon core pipe belongs to flexible pipes, the general finished products are coiled and packaged, the silicon core pipe can be coiled from hundreds of meters to thousands of meters, and the silicon core pipe is often required to be extracted during cable maintenance, so that the silicon core pipe has a larger requirement on the lubricity. The silicon core pipe in the existing market is a cylindrical solid wall pipe, because the outer diameter of the cable is slightly different from the inner diameter of the silicon core pipe, when the cable passes through, the contact area between the outer surface of the cable and the inner wall of the pipe is large, the friction damage area caused by the contact area is also large, the contact area is large, the threading resistance is also increased, the threading difficulty is also improved, and the construction and the laying are not facilitated.

The cable can generate more heat in the processes of extraction and operation, the heat conductivity coefficient of the polyethylene material is 0.3-0.6W/(m.times.K), the heat conductivity coefficient is smaller, the service lives of the pipe body and the cable can be influenced under the condition of higher temperature for a long time, and the development of a cable sleeve with good heat dissipation effect is needed.

Disclosure of Invention

In order to overcome the defects in the prior art, the technical problems to be solved by the utility model are as follows: how to improve the lubricity and thermal conductivity of the silicon core tube.

In order to solve the technical problems, the utility model adopts the following technical scheme: the self-lubricating heat-conducting silicon core tube sequentially comprises a lubricating layer, a structural layer, a heat-conducting block, an outer layer and a color ribbon wire from inside to outside.

And the inner surface of the lubricating layer is provided with a lubricating convex block with continuous raised grains.

The inner surface of the structural layer is connected with the lubricating layer, 6 arc-shaped blocks are uniformly distributed on the outer surface of the structural layer, and the heat conducting blocks are filled in gaps between the structural layer and the outer layer.

The outer layer is connected with the heat conduction block and the structural layer, and the ribbon lines are uniformly distributed on the outer side of the outer layer.

Further, the material of the lubricating layer is silicon-based resin.

The inner surface of the lubricating layer is provided with the continuous raised lubrication blocks designed with the raised waves, so that the cable only contacts with the top surfaces of the raised lubrication blocks when passing through the inside of the pipe, compared with a flat-wall pipe, the contact area is greatly reduced, the threading resistance is correspondingly reduced, in addition, the raised wave structure is designed, and the material cost of the lubricating layer is reduced; in addition, due to the structural design of continuous wave patterns on the inner surface of the lubricating layer, the inner surface area of the pipe can be increased, the inner surface area of the pipe is increased, the heat conduction area is large, and the heat transfer rate is high.

Preferably, the number of the lubricating bump is 12-20.

Further, the material of the structural layer is a mixture of polyethylene and graphite.

The structure layer outside design has 6 arc pieces, and the outside of arc piece links to each other with outer inboard, can improve the compressive resistance of tubular product through the enhancement effect of 6 arc pieces to the heat conduction ability of graphite is strong, can improve the heat conduction ability of this layer.

Preferably, the maximum thickness of the structural layer is: the minimum thickness is (1.5-2): 1.

furthermore, the heat conducting block is made of heat conducting silica gel, the heat conducting coefficient of the heat conducting silica gel is high and is 1.0-3.0W/(m.times.K), and the heat conduction from the inside to the outside of the tube can be further improved.

Further, the outer layer is made of polyethylene.

Furthermore, the number of the color ribbon lines is 4, and the color ribbon lines are uniformly distributed on the outer surface of the tube body to play a role in recognition.

Further, the lubrication layer has a maximum thickness: maximum thickness of structural layer: the thickness of the outer layer is (0.3-0.5): 1:1.

The materials used in the utility model are all materials with higher flexibility, and the pipe can be coiled and packed by a coiling machine after production; the self-lubricating performance is improved by designing the inner structure wall of the pipe, and the abrasion of the cable is reduced; the heat conduction performance of the pipe is improved by increasing the heat transfer area and the heat conduction coefficient, so that heat generated by the operation of the cable in the pipe is easily conducted to the external environment, and the safety of the cable is improved; the pipe can be produced by adopting a multi-machine co-extrusion production mode and through the change of the die structure, the production difficulty is low, the speed is high, the economic benefit is good, and the practicability is high.

Drawings

FIG. 1 is a cross-sectional view of a self-lubricating thermally conductive silicon core tube of the present utility model.

Reference numerals: 1 lubricating layer, 2 structural layer, 3 heat conduction blocks, 4 outer layer, 5 typewriter ribbon line, 11 lubrication protruding block, 21 arc piece.

Detailed Description

In order to more particularly describe the technical gist of the present utility model, the following description is further provided with reference to the accompanying drawings.

Examples

The self-lubricating heat-conducting silicon core tube sequentially comprises a lubricating layer 1, a structural layer 2, a heat-conducting block 3, an outer layer 4 and a color ribbon wire 5 from inside to outside.

The inner surface of the lubricating layer 1 is provided with a lubricating convex block 11 with continuous corrugation.

The inner surface of the structural layer 2 is connected with the lubricating layer 1, 6 arc-shaped blocks 21 are uniformly distributed on the outer surface of the structural layer 2, and the heat conducting blocks 3 are filled in gaps between the structural layer 2 and the outer layer.

The outer layer 4 is connected with the heat conduction block 3 and the structural layer 2, and the color ribbon lines 5 are uniformly distributed on the outer side of the outer layer 4.

Further, the material of the lubricating layer 1 is silicon-based resin.

The inner surface of the lubricating layer 1 is provided with the lubricating convex blocks 11 with continuous corrugation design, so that a cable only contacts with the top surfaces of the lubricating convex blocks 11 when passing through the inside of the pipe, compared with a flat wall pipe, the contact area is greatly reduced, the threading resistance is correspondingly reduced, and the material cost of the lubricating layer 1 is reduced due to the corrugation structural design; in addition, due to the structural design of continuous corrugation on the inner surface of the lubricating layer 1, the inner surface area of the pipe can be increased, the inner surface area of the pipe is increased, the heat conduction area is large, and the heat transfer rate is high.

Preferably, the number of the lubricating protrusions 11 is 12, the number of the lubricating protrusions is not too small or too large, the number of the lubricating protrusions is too small, the drag reduction effect is not obvious, the number of the lubricating protrusions is too large, and the die is difficult to form a relatively regular inner surface.

Further, the material of the structural layer 2 is a mixture of polyethylene and graphite.

The structural layer 2 outside designs has 6 arc pieces 21, and the outside of arc piece 21 links to each other with the inboard of outer 4, can improve the compressive resistance of tubular product through the enhancement effect of 6 arc pieces 21 to the heat conduction ability of graphite is strong, can improve the heat conduction ability of this layer.

Preferably, the maximum thickness of the structural layer 2 is: the minimum thickness is 2:1.

further, the heat conducting block 3 is made of heat conducting silica gel, and the heat conducting silica gel has high heat conductivity coefficient, so that the heat conduction from the inside to the outside of the tube can be further improved.

Further, the material of the outer layer 4 is polyethylene.

Furthermore, the number of the color ribbon lines 5 is 4, and the color ribbon lines are uniformly distributed on the outer surface of the tube body to play a role in recognition.

Further, the maximum thickness of the lubricating layer 1 is as follows: maximum thickness of structural layer 2: the thickness of the outer layer 4 is 0.3:1:1.

The self-lubricating heat-conducting silicon core pipe can be continuously produced through coextrusion compounding of 5 extruders, the production speed is high, the coiling performance of the pipe body is good, the production length is long, the self-lubricating heat-conducting silicon core pipe is suitable for long-distance jointless pipeline laying, and the penetrability of cables is improved.

While the above embodiments have been described with reference to the main features and advantages of the present utility model, those skilled in the art will recognize that the present utility model is not limited to the embodiments described, but equivalent changes can be made without departing from the spirit and scope of the utility model.

Claims

1. The self-lubricating heat-conducting silicon core tube is characterized by sequentially comprising a lubricating layer, a structural layer, a heat-conducting block, an outer layer and a color ribbon wire from inside to outside;

the inner surface of the lubricating layer is provided with a lubricating convex block with continuous raised grains;

the inner surface of the structural layer is connected with the lubricating layer, 6 arc-shaped blocks are uniformly distributed on the outer surface of the structural layer, and the gaps between the structural layer and the outer layer are filled with heat conducting blocks;

2. The self-lubricating heat-conducting silicon core pipe as claimed in claim 1, wherein the lubricating layer is made of silicon-based resin.

3. The self-lubricating heat-conducting silicon core pipe according to claim 1, wherein the number of the lubricating convex blocks is 12-20.

4. The self-lubricating thermally conductive silicon core tube of claim 1, wherein the structural layer has a maximum thickness: the minimum thickness is (1.5-2): 1.

5. the self-lubricating heat-conducting silicon core pipe according to claim 1, wherein the heat-conducting block is made of heat-conducting silica gel.

6. The self-lubricating heat conducting silicon core tube as set forth in claim 1 wherein the outer layer is polyethylene.

7. The self-lubricating heat-conducting silicon core tube according to claim 1, wherein the number of the color ribbon wires is 4, and the color ribbon wires are uniformly distributed on the outer surface of the tube body.

8. The self-lubricating thermally conductive silicon core tube of claim 1, wherein the lubricating layer has a maximum thickness: maximum thickness of structural layer: the thickness of the outer layer is (0.3-0.5): 1:1.