CN214012555U

CN214012555U - Thermal expansion and cold contraction prevention environment-friendly wire and cable

Info

Publication number: CN214012555U
Application number: CN202120188826.0U
Authority: CN
Inventors: 丁丽萍; 张春友
Original assignee: Quantong Cable Ltd By Share Ltd
Current assignee: Quantong Cable Ltd By Share Ltd
Priority date: 2021-01-23
Filing date: 2021-01-23
Publication date: 2021-08-20
Anticipated expiration: 2031-01-23

Abstract

The utility model relates to a prevent expend with heat and contract with cold environmental protection wire and cable relates to cable technical field, including the oversheath, set up a plurality of cable cores in the oversheath, the parcel has the insulating cover of one deck on the cable core, and the bending is provided with a plurality of elastic buffering areas that have on the circumference lateral wall of insulating cover, and the equal fixed connection in both ends in buffering area is on the insulating cover. The material that this application adopted is the less environment-friendly material to environmental pollution to have elastic buffering area through crooked setting, utilize the elastic deformation in buffering area to cushion the expend with heat and contract with cold of insulating cover and oversheath, with the damage that receives when reducing oversheath, insulating cover expend with heat and contract with cold, thereby have the advantage that increases cable life.

Description

Thermal expansion and cold contraction prevention environment-friendly wire and cable

Technical Field

The application relates to the technical field of cables, in particular to an expansion and contraction prevention environment-friendly electric wire and cable.

Background

At present, with the rapid development of power grid construction, the demand of cables for power grid construction is increasing day by day, and meanwhile, the requirements on the safety of cable use are higher and higher, especially in some areas with large day-night temperature difference and cold areas, the tests on the safety of the cables are more severe.

Related art is a power cable as disclosed in publication No. CN205984333U, which includes a central conductor and a first insulating sheath, the first insulating sheath is wrapped outside the central conductor, the first insulating sheath is a resin of a binary blend of POE and LLDPE, and the second insulating sheath is a resin of a binary blend of POE and LLDPE.

In the above-described related art, the inventors consider that: when the solar air temperature difference changes greatly, the cable expands with heat and contracts with cold easily, so that the wrapping layer inside the cable is broken easily, and the service life of the cable is short.

SUMMERY OF THE UTILITY MODEL

In order to prolong the service life of the cable, the application aims to provide the heat expansion and cold contraction prevention environment-friendly electric wire and cable.

The application provides a pair of prevent expend with heat and contract with cold environmental protection wire and cable adopts following technical scheme:

the utility model provides an anti expend with heat and contract with cold environmental protection wire and cable, include the oversheath, set up in a plurality of cable cores in the oversheath, the parcel has the insulating cover of one deck on the cable core, the crooked a plurality of elastic buffering areas that have that are provided with on the circumference lateral wall of insulating cover, the equal fixed connection in both ends in buffering area on the insulating cover.

Through adopting above-mentioned technical scheme, when the weather is hotter, the temperature risees in the oversheath makes the overcoat begin to expand, and insulating cover also begins to expand for the buffer zone also expands and butt on the inner wall of oversheath, so that the buffer zone produces compression deformation. When the weather is cold, the outer sheath and the insulating sleeve are contracted and deformed, so that the inner wall of the outer sheath is abutted against the buffer belt, and the buffer belt is compressed and deformed. And then cushion the expend with heat and contract with cold of insulating cover and oversheath through the elastic deformation of buffering area to reduce the damage that oversheath, insulating cover received when expend with heat and contract with cold, thereby increase the life of cable.

Optionally, two ends of each buffer zone are respectively abutted against the adjacent buffer zones, and the buffer zones are uniformly distributed along the circumferential direction of the insulating sleeve.

Through adopting above-mentioned technical scheme, the buffer zone is along the circumference direction evenly distributed of insulating cover to the area of increase buffer zone on the insulating cover, and then the buffer area of increase buffer zone to the insulating cover, thereby make the even difficult damage of insulating cover atress.

Optionally, the buffer strip is arranged on the insulating sleeve in an arch shape.

Through adopting above-mentioned technical scheme, utilize arched buffer zone to make the elastic potential energy increase in buffer zone to increase the elasticity in buffer zone, and then increase the buffer power of buffer zone to outer sheath, insulating cover, thereby improve the buffering effect that insulating cover received.

Optionally, a waterproof layer is arranged outside the outer sheath, a plurality of clamping strips are arranged on the circumferential side wall of the outer sheath, and clamping grooves for the clamping strips to be clamped are formed in the inner wall of the waterproof layer.

By adopting the technical scheme, the clamping strip is clamped into the clamping groove to fix the waterproof layer on the outer sheath, so that the waterproof layer is fixedly connected with the outer sheath, the dislocation of the waterproof layer on the outer sheath is reduced, the contact area of the waterproof layer and the outer sheath is increased, and the connection stability of the waterproof layer on the outer sheath is enhanced.

Optionally, the clamping strip tapers towards a direction away from the outer sheath, and an end portion of the clamping strip located in the clamping groove is arc-shaped.

Through adopting above-mentioned technical scheme, the tip that the card strip is located the draw-in groove is the convergent form for leave the gap between card strip both sides and the draw-in groove cell wall, and the tip of card strip is the arc, makes and leaves the buffering space that supplies the waterproof layer deformation between draw-in groove and the card strip, cushions when with expend with heat and contract with cold to the waterproof layer, thereby increases the life of waterproof layer.

Optionally, an anti-aging layer is arranged outside the waterproof layer and is made of polyester fibers.

Through adopting above-mentioned technical scheme, utilize the ageing resistance layer for polyester fiber wraps up the waterproof layer, and polyester fiber wrinkle resistance and shape preserving are better, have higher intensity and elasticity recovery ability, in order to protect the waterproof layer, thereby improve the ageing resistance of cable.

Optionally, a plurality of hollow silicone tubes are arranged between the waterproof layer and the anti-aging layer, and the silicone tubes have elasticity and are distributed at even intervals along the circumferential direction of the waterproof layer.

Through adopting above-mentioned technical scheme, separate waterproof layer and anti-aging layer between through the silicone tube, utilize the elasticity of silicone tube to cushion waterproof layer and anti-aging layer to reduce the damage that receives when waterproof layer and anti-aging layer expend with heat and contract with cold.

Optionally, a connecting pipe is communicated between two adjacent silicone tubes.

Through adopting above-mentioned technical scheme, when the cable intensifies, the heat that the cable core produced transmits to the silicone tube behind oversheath and the waterproof layer, and the silicone tube passes through the connecting pipe and transmits the heat rapidly to between waterproof layer and the ageing resistance layer to when accelerating the heat speed of giving off, play the effect of strengthening the buffering of anti-ageing layer.

In summary, the present application includes at least one of the following beneficial technical effects:

the buffer belt with elasticity is arranged in a bending mode, and the elastic deformation of the buffer belt is utilized to buffer the thermal expansion and cold contraction of the insulating sleeve and the outer sheath, so that the damage to the outer sheath and the insulating sleeve during the thermal expansion and cold contraction is reduced, and the service life of the cable is prolonged;

by arranging the matching of the clamping strips and the clamping grooves, the contact area between the waterproof layer and the outer sheath is increased, and meanwhile, a buffer space for deformation of the waterproof layer is formed between the arc-shaped end parts of the clamping strips and the clamping grooves, so that the waterproof layer is buffered when the waterproof layer expands with heat and contracts with cold, and the service life of the waterproof layer is prolonged;

through setting up the silicone tube, utilize the elasticity of silicone tube to cushion waterproof layer and ageing resistance layer, receive the damage when reducing waterproof layer and ageing resistance layer expend with heat and contract with cold for the heat of oversheath passes through the connecting pipe and transmits to the ageing resistance layer rapidly.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Description of reference numerals: 1. an outer sheath; 11. clamping the strip; 2. an insulating sleeve; 21. a cable core; 22. a buffer zone; 3. a waterproof layer; 31. a card slot; 4. an anti-aging layer; 41. a silicone tube; 42. and (4) connecting the pipes.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses an expansion and contraction prevention environment-friendly electric wire and cable.

Referring to fig. 1, an environmental protection electric wire and cable of preventing expend with heat and contract with cold includes oversheath 1, waterproof layer 3, anti-aging layer 4 that from interior to exterior set gradually, and oversheath 1 intussuseption is filled with a plurality of cable cores 21, all overlaps on each cable core 21 to be equipped with one side insulating boot 2, and insulating boot 2 is made for silicon rubber material, has good insulating nature, reduces the mutual interference between the cable core 21.

Referring to fig. 1, a curved buffer strip 22 is fixedly connected to a circumferential side wall of the insulating sleeve 2, and both ends of the buffer strip 22 are fixedly connected to the circumferential side wall of the insulating sleeve 2, so that the buffer strip 22 is curved in a direction away from the insulating sleeve 2 to form an arch.

Referring to fig. 1, the both ends of buffer belt 22 respectively with adjacent buffer belt 22 looks butt to along insulating cover 2's circumferential direction evenly distributed, with insulating cover 2 parcel, make the mutual butt of buffer belt 22 between the adjacent cable core 21, be close to buffer belt 22 on insulating cover 2 of oversheath 1 and the inner wall looks butt of oversheath 1, receive the damage when expanding with heat and contracting with cold through arched buffer belt 22 buffering oversheath 1 and insulating cover 2.

Referring to fig. 1, the waterproof layer 3 is made of polyvinyl chloride, which has stable physicochemical properties, low gas and moisture permeability, and good acid-base corrosion resistance, so that the cable outer skin has a waterproof function and is also acid-base resistant.

Referring to fig. 1, a plurality of clamping strips 11 are arranged on the outer side wall of the outer sheath 1, the clamping strips 11 are uniformly arranged along the circumferential direction of the outer sheath 1 at intervals, and a plurality of clamping grooves 31 for the clamping strips 11 to be clamped in are formed in the inner wall of the waterproof layer 3. So as to increase the contact area between the outer sheath 1 and the waterproof layer 3 by clamping the clamping groove 31 through the clamping strip 11, thereby enhancing the connection stability between the waterproof layer 3 and the outer sheath 1.

Referring to fig. 1, the tip that the card strip 11 is located the draw-in groove 31 is towards the direction convergent of keeping away from oversheath 1, and the tip that the card strip 11 kept away from oversheath 1 is the arc to make the card strip 11 be located and leave the buffer space that supplies 3 deformations of waterproof layer between the cell wall of the tip of draw-in groove 31 and draw-in groove 31 in the draw-in groove 31, cushion 3 expend with heat and contract with cold to waterproof layer, thereby increase 3's of waterproof layer life.

Referring to fig. 1, a plurality of silicone tubes 41 are fixedly connected between the anti-aging layer 4 and the waterproof layer 3, the silicone tubes 41 have elasticity and are uniformly fixed on the outer side wall of the waterproof layer 3 at intervals along the circumferential direction of the waterproof layer 3, a connecting pipe 42 is fixedly connected between two adjacent silicone tubes 41, and the connecting pipe 42 is communicated with the silicone tubes 41.

Referring to fig. 1, the connection pipe 42 is made of the same material as the silicone tube 41 and is made of a silicone material with good elasticity, so that the silicone tube 41 is fixedly connected to the outer side wall of the waterproof layer 3 and the inner wall of the anti-aging layer 4, the waterproof layer 3 and the anti-aging layer 4 are buffered by the elasticity of the silicone tube 41, and damage to the waterproof layer 3 and the anti-aging layer 4 caused by expansion with heat and contraction with cold is reduced.

The implementation principle of the heat expansion and cold contraction prevention environment-friendly wire and cable provided by the embodiment of the application is as follows: when weather is comparatively hot or cold, make insulating cover 2, oversheath 1 easily, waterproof layer 3, anti-aging layer 4 produce expend with heat and contract with cold, buffer area 22 cushions oversheath 1 and insulating cover 2 back through bending deformation this moment, and the compression deformation of silicone tube 41, connecting pipe 42 and draw-in groove 31 cushions waterproof layer 3 and anti-aging layer 4 to reduce the damage that the cable received when expend with heat and contract with cold, thereby increase the life of cable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prevent expend with heat and contract with cold environmental protection wire and cable which characterized in that: including oversheath (1), set up in a plurality of cable cores (21) in oversheath (1), the parcel has one deck insulating cover (2) on cable core (21), the circumference lateral wall of insulating cover (2) goes up the bending and is provided with a plurality of elastic buffering areas (22) that have, the equal fixed connection in both ends of buffering area (22) on insulating cover (2).

2. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 1, characterized in that: the two ends of each buffer zone (22) are respectively abutted against the adjacent buffer zones (22), and the buffer zones (22) are uniformly distributed along the circumferential direction of the insulating sleeve (2).

3. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 1, characterized in that: the buffer belt (22) is arranged on the insulating sleeve (2) in an arched shape.

4. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 1, characterized in that: waterproof layer (3) are equipped with outward in oversheath (1), be equipped with a plurality of card strips (11) on the circumference lateral wall of oversheath (1), seted up the confession on waterproof layer (3) inner wall card draw-in groove (31) that card strip (11) were gone into.

5. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 4, wherein: the clamping strip (11) is gradually reduced towards the direction far away from the outer sheath (1), and the end part of the clamping strip (11) located in the clamping groove (31) is arc-shaped.

6. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 4, wherein: an anti-aging layer (4) is arranged outside the waterproof layer (3), and the anti-aging layer (4) is made of polyester fibers.

7. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 6, wherein: a plurality of hollow silicone tubes (41) are arranged between the waterproof layer (3) and the anti-aging layer (4), and the silicone tubes (41) have elasticity and are uniformly distributed at intervals along the circumferential direction of the waterproof layer (3).

8. The thermal expansion and cold contraction prevention environment-friendly electric wire and cable according to claim 7, characterized in that: and a connecting pipe (42) is communicated between two adjacent silicone tubes (41).