CN215868709U

CN215868709U - Plastic insulation control cable capable of preventing frost cracking

Info

Publication number: CN215868709U
Application number: CN202122002630.0U
Authority: CN
Inventors: 刘朝明; 荆进宝; 李世豪
Original assignee: Henan Changjiang Cable Co ltd
Current assignee: Henan Changjiang Cable Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-18
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to the field of cables, in particular to an anti-frost-crack plastic insulation control cable which comprises a heat insulation layer, wherein a first insulation protective sleeve is fixedly nested in the heat insulation layer, and an inner core conductor of the cable is arranged in the first insulation protective sleeve. This kind of prevent plastic insulation control cable of frost crack, setting up through preventing scraping the wearing layer makes the surperficial wearability of cable improve, through the resistant layering of buffering in the buffering clearance, make the cable pull the messenger on ground, play buffering absorbing effect to its inner core, and the clearance can effectual improvement cable tensile is able to bear or endure the effect of buckling, simple structure and practicality are higher, can provide better thermal insulation performance to cable inner core conductor through the insulating layer that keeps warm, through the heat preservation cotton net of the withstand voltage strip surface setting of buffering, can further improve the thermal insulation performance of cable surface, in order to guarantee at chilly weather, keep cable inside temperature, receive the oppression when the cable, outer protective layer deformation receives flexible support under the cooperation of the resistant layering of buffering.

Description

Plastic insulation control cable capable of preventing frost cracking

Technical Field

The utility model relates to the field of cables, in particular to an anti-frost-crack plastic insulated control cable.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and river-crossing underwater power transmission lines, is rapidly increased in the use amount along with the continuous development of social economy at present, and has higher requirements on the quality of the cable, such as the cable used in the industries of steel, metallurgy, electric power, chemical industry, petroleum and the like, on the high temperature resistance, the anti-interference capability, the tensile resistance and the service life of the cable.

The following problems in the prior art are not well solved: 1. the cable is usually dragged on the ground under different road conditions in the laying and using processes, and the conventional cable is weak in tensile strength and drop resistance and affects the service life of the cable; 2. when outdoor temperature was low excessively, the inside temperature of cable was influenced, and the temperature is lower, can lead to its inside copper core to receive the influence to under the extrusion of external force, cracked problem appears easily, influences normal work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a frost crack prevention plastic insulation control cable to solve the problems in the background technology. In order to achieve the purpose, the utility model provides the following technical scheme: a plastic insulation control cable capable of preventing frost cracking comprises a heat insulation layer, wherein a first insulation protective sleeve is fixedly nested in the heat insulation layer, and a cable inner core conductor is arranged in the first insulation protective sleeve;

the fixed second insulating protective sheath that has cup jointed in the insulating layer outside that keeps warm, and the outside activity of the insulating protective sheath of second has cup jointed the outer protective layer, and the outer wall fixed cover of outer protective layer has cup jointed the anti-scratch wearing layer, spacing recess has been seted up to the outer protective layer inner wall, and spacing recess internalization interlude has the resistant layering of buffering.

Preferably, the number of the first insulating protection sleeves is three, and the three first insulating protection sleeves are radially equidistantly arranged in the heat preservation and insulation layer.

Preferably, a buffer gap is formed between the second insulating protective sleeve and the outer protective layer, and the buffer pressure-resistant strip is uniformly filled in the buffer gap.

Preferably, the buffering pressure-resistant strip is made of an elastic rubber strip, and a heat-insulating cotton net is fixedly sleeved on the outer wall of the elastic rubber strip.

Preferably, the outer walls of the first insulating protective sleeve and the second insulating protective sleeve are fixedly sleeved with nylon tensile nets.

Preferably, the number of the limiting grooves is not less than fifteen, and the plurality of limiting grooves are radially arranged on the inner wall of the outer protection layer at equal intervals.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the surface wear resistance of the cable is improved through the arrangement of the scratch-resistant wear-resistant layer, the cable is dragged on the ground through the buffering pressure-resistant strip in the buffering gap, the effect of buffering and damping is achieved on the inner core of the cable, the tensile and bending-resistant effect of the cable can be effectively improved through the gap, and the cable is simple in structure and high in practicability.

According to the utility model, the heat insulation layer can provide better heat insulation performance for the cable inner core conductor, the heat insulation cotton net arranged on the surface of the buffer pressure-resistant strip can further improve the heat insulation performance of the outer surface of the cable so as to ensure that the temperature inside the cable is kept in cold weather, when the cable is pressed, the deformation of the outer protection layer is flexibly supported under the cooperation of the buffer pressure-resistant strip, the cable is prevented from being cracked under compression, and the safety is higher.

Drawings

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

FIG. 2 is a perspective view of an outer protective layer of the structure of the present invention;

fig. 3 is a side cross-sectional view of the inventive structure.

In the figure: 1. a heat insulation layer; 2. a first insulating protective sleeve; 3. a cable inner core conductor; 4. a second insulating protective sleeve; 5. an outer protective layer; 6. a scratch-resistant and wear-resistant layer; 7. a limiting groove; 8. buffering a pressure-resistant strip; A. the gap is buffered.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a plastic insulation control cable preventing frost cracking comprises a thermal insulation layer 1, a cable inner core conductor 3 can be provided with better thermal insulation performance through the thermal insulation layer 1, a first insulation protective sleeve 2 is fixedly nested in the thermal insulation layer 1, and the cable inner core conductor 3 is arranged in the first insulation protective sleeve 2;

the fixed second insulating protective sheath 4 that has cup jointed in 1 outside of insulating layer, and the outside activity of second insulating protective sheath 4 has cup jointed outer protective layer 5, and the outer wall of outer protective layer 5 is fixed to have cup jointed and has prevented scraping wearing layer 6, makes the surperficial wearability of cable improve through preventing setting up of scraping wearing layer 6, and spacing recess 7 has been seted up to outer protective layer 5 inner wall, and spacing recess 7 internalization interlude has the resistant layering 8 of buffering.

In this embodiment, as shown in fig. 1 and 3, the number of the first insulating protection sleeves 2 is three, and the three first insulating protection sleeves 2 are radially and equidistantly disposed in the heat insulating layer 1, the heat insulating layer 1 is made of glass wool, which belongs to one category of glass fibers and is an artificial inorganic fiber, the glass wool is a material that is formed by fiberizing molten glass to form a cotton shape, and the chemical component belongs to the category of glass and is an inorganic fiber, and has a large number of small air pores, so that the glass wool has the functions of heat insulation, sound absorption, noise reduction, safety protection and the like, and has small volume density, thermal conductivity , good heat insulation, sound absorption, corrosion resistance and stable chemical performance.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, a buffering gap a is provided between the second insulating protective sheath 4 and the outer protective layer 5, the buffering pressure-resistant strip 8 is uniformly filled in the buffering gap a, and the buffering pressure-resistant strip 8 of the buffering gap a pulls the cable on the ground to achieve the effect of buffering and damping on the inner core of the cable, and the gap can effectively improve the effect of tensile and bending resistance of the cable, so that the cable has a simple structure and high practicability.

In this embodiment, as shown in fig. 1 and 3, the cushion pressure-resistant strip 8 is made of an elastic rubber strip, and the outer wall of the elastic rubber strip is fixedly sleeved with a heat-insulating cotton net, the rubber is divided into two types, i.e., natural rubber and synthetic rubber, the natural rubber is made by extracting colloid from plants such as rubber trees and rubber grasses and then processing the colloid, the synthetic rubber is made of various monomers through polymerization reaction, and is a high-elasticity polymer material with reversible deformation, is rich in elasticity, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed, the heat-insulating cotton is a non-toxic, harmless and pollution-free novel heat-insulating material made of high-purity raw materials such as chamotte, alumina powder, silica powder, chrome quartz sand and the like, is a high-efficiency heat-insulating material, and has the characteristics of light weight, oxidation resistance, low thermal conductivity, good flexibility, corrosion resistance, small heat capacity, sound insulation and the like, and the heat-insulating cotton net is arranged on the surface of the cushion pressure-resistant strip 8, can further improve the thermal insulation performance of cable surface to guarantee in chilly weather, keep the inside temperature of cable, receive the oppression when the cable, 5 deformations of outer protective layer receive the flexible support under the cooperation of the resistant layering 8 of buffering, avoid the cable to receive the pressure fracture, the security is higher.

In this embodiment, as shown in fig. 1 and 3, the outer walls of the first insulating protective sheath 2 and the second insulating protective sheath 4 are fixedly sleeved with nylon tensile nets, which are made of nylon monofilaments through plain weaving and heat setting treatment by a flexible rapier loom and made of chemical synthetic fibers, and belong to polyamide systems.

In this embodiment, as shown in fig. 1, fig. 2, and fig. 3, the number of the limiting grooves 7 is not less than fifteen, and the plurality of limiting grooves 7 are radially and equidistantly formed on the inner wall of the outer protective layer 5.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a plastics insulation control cable of frost crack prevention, includes thermal insulation layer (1), its characterized in that: a first insulating protective sleeve (2) is fixedly nested in the heat-insulating layer (1), and a cable inner core conductor (3) is arranged in the first insulating protective sleeve (2);

fixed cover in the heat preservation insulating layer (1) outside has cup jointed second insulating protective sheath (4), and the outside activity of second insulating protective sheath (4) has cup jointed outer protective layer (5), and the outer wall of outer protective layer (5) is fixed to have cup jointed and prevent scraping wearing layer (6), spacing recess (7) have been seted up to outer protective layer (5) inner wall, and spacing recess (7) internalization interlude has buffering resistant layering (8).

2. The frost crack resistant insulated plastic control cable of claim 1, wherein: the number of the first insulating protective sleeves (2) is three, and the three first insulating protective sleeves (2) are radially arranged in the heat insulation layer (1) at equal intervals.

3. The frost crack resistant insulated plastic control cable of claim 1, wherein: be provided with between second insulating protective sheath (4) and outer protective layer (5) and cushion clearance (A), cushion resistant layering (8) are evenly filled in cushion clearance (A).

4. The frost crack resistant insulated plastic control cable of claim 1, wherein: the material of the buffering pressure-resistant strip (8) is an elastic rubber strip, and the outer wall of the elastic rubber strip is fixedly sleeved with a heat-preservation cotton net.

5. The frost crack resistant insulated plastic control cable of claim 1, wherein: the outer walls of the first insulating protective sleeve (2) and the second insulating protective sleeve (4) are fixedly sleeved with nylon tensile nets.

6. The frost crack resistant insulated plastic control cable of claim 1, wherein: the number of the limiting grooves (7) is not less than fifteen, and the plurality of limiting grooves (7) are radially arranged on the inner wall of the outer protective layer (5) at equal intervals.