CN216817865U

CN216817865U - 10kV overhead insulated cable

Info

Publication number: CN216817865U
Application number: CN202220266057.6U
Authority: CN
Inventors: 桑红旗
Original assignee: Langfang Haotong Special Cable Co ltd
Current assignee: Langfang Haotong Special Cable Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-06-24
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a 10kV overhead insulated cable which comprises an outer protective sleeve, wherein a low-temperature-resistant insulating layer is wrapped inside the outer protective sleeve, an outer shielding layer is wrapped inside the low-temperature-resistant insulating layer, an inner protective layer is wrapped inside the outer shielding layer, a buffer sleeve is arranged inside the inner protective layer, a woven layer is connected to the bottom of the buffer sleeve, a cable body is connected to the woven layer, the outer protective sleeve, the inner protective layer and the woven layer are arranged, so that the cable body has good tensile strength and can bear large tensile force, and the buffer sleeve, a connecting pipe and an inner core layer are arranged, so that the cable body has good buffering capacity when being collided.

Description

10kV overhead insulated cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a 10kV overhead insulated cable.

Background

The cable is usually composed of several or several groups of wires, the current cable mostly adopts dry crosslinking, adopts polyethylene insulating material added with peroxide compound crosslinking agent, completes the extrusion of a conductor shielding layer, an insulating layer and an insulating shielding layer by three-layer co-extrusion, and then completes the crosslinking continuously and uniformly through a sealed crosslinking pipe filled with high-temperature and high-pressure nitrogen. With the rapid development of power grid construction, the demand of cables for power grid construction, especially aerial cables, is increasing, and aerial cables face the conditions of overlarge changes of environmental temperature, low-temperature icing or high-temperature insolation in individual severe environment areas, so that the requirements on safety, stability and fire resistance of aerial cables are also increasing.

The utility model discloses a 10kV overhead insulated cable with an authorization notice number CN205211455U, and relates to a 10kV overhead insulated cable which comprises a conductor, wherein a shielding layer is arranged outside the conductor, an insulating layer is arranged outside the shielding layer, a protective layer is arranged outside the insulating layer, the conductor comprises a high-strength carbon fiber composite core and a heat-resistant aluminum alloy single wire arranged outside the high-strength carbon fiber composite core, and the high-strength carbon fiber composite core and the heat-resistant aluminum alloy single wire are in a concentric stranded structure. The utility model has the characteristics of light weight, high tensile strength, good electrical performance, good thermal stability, good creep property and good weather resistance.

However, the 10kV overhead insulated cable is poor in electromagnetic shielding effect and low in tensile strength, so that the cable is prone to breaking in the using process, the cable is corroded by external factors all the year round, the cable is prone to being damaged, the safety of a line is reduced, potential safety hazards are caused, the fault rate of a power transmission line is increased, and the cable cannot reach the designed service life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a 10kV overhead insulated cable to solve the problems of low tensile strength and easiness in damage.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a 10kV aerial insulated cable, includes outer protective sheath, and outer protective sheath is used for the protection cable to reduce and damages, the inside cladding of outer protective sheath has low temperature resistant insulating layer, and low temperature resistant insulating layer can play low temperature resistant and insulating effect, the inside cladding of low temperature resistant insulating layer has outer shielding layer, is the interior semiconduction shielding layer of conductor, the inside cladding of outer shielding layer has the inner protective layer, the inside of inner protective layer is provided with the cushion collar, the bottom of cushion collar is connected with the weaving layer, and the weaving layer forms for the high strength steel wire is worked out, be connected with the cable body on the weaving layer for the transmission electricity.

Preferably, the outer protective sleeve is a fireproof silane cross-linked polyethylene protective sleeve, and has the characteristics of strong fire resistance, high temperature resistance, wear resistance, corrosion resistance and the like.

Preferably, the low-temperature-resistant insulating layer is made of a low-temperature-resistant insulating composite material, and can resist cold weather and adapt to more use environments.

Preferably, the top and the bottom of cushion collar are provided with the fixed block, be connected with compression spring between the fixed block, the cushion collar passes through the fixed block for the rubber sleeve and connects compression spring and can play the cushioning effect.

Preferably, the skin of the cable body is provided with the enhancement layer, the inside cladding of enhancement layer has the internal shield layer, the inside on internal shield layer is the cladding has the sinle silk, can avoid the internal portion of cable to receive the damage through setting up the enhancement layer, sets up the protection that the internal shield layer can be better moreover through inside.

Preferably, the internal connection of the cable body has the connecting pipe, the center of connecting pipe is connected with the inner core layer, be provided with the filling layer between inner core layer and the weaving layer, make a plurality of cable body coupling to inner core layer make its overall arrangement reasonable more stable through setting up the connecting pipe, then can make the cable body after the impact resume original position through the filling layer.

Preferably, a tube core is arranged in the center of the inner core layer, an inner insulating layer covers the outside of the tube core, the center of gravity in the center is centralized and stable through the arranged tube core, and the connecting pipes cannot be influenced through the arrangement of the inner insulating layer.

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

1. the outer protective sleeve, the inner protective layer and the braided layer are arranged, so that the cable has good tensile strength and can bear large tensile force;

2. through the cushion collar, connecting pipe and the inner core layer that are equipped with, have good buffer capacity when can making it receive the collision.

Drawings

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

FIG. 2 is a cross-sectional view of the utility model a;

FIG. 3 is a cross-sectional view of a cushion collar of the present invention.

In the figure: 1. an outer protective sheath; 2. a low temperature resistant insulating layer; 3. an outer shield layer; 4. an inner protective layer; 5. A buffer sleeve; 6. a cable body; 7. weaving layer; 8. a filling layer; 9. a connecting pipe; 10. an inner core layer; 11. An inner insulating layer; 12. a die; 13. a reinforcing layer; 14. an inner shield layer; 15. a wire core; 16. a fixed block; 17. compressing the spring.

Detailed Description

Please refer to fig. 1, fig. 2, fig. 3, a 10kV overhead insulated cable, including an outer protective sheath 1, the outer protective sheath 1 is used for protecting the cable to reduce damage, the inner cladding of the outer protective sheath 1 has a low temperature resistant insulating layer 2, the low temperature resistant insulating layer 2 can play a role of low temperature resistance and insulation, the inner cladding of the low temperature resistant insulating layer 2 has an outer shielding layer 3, which is an inner semi-conductive shielding layer of a conductor, the inner cladding of the outer shielding layer 3 has an inner protective layer 4, the inner part of the inner protective layer 4 is provided with a buffer sleeve 5, the bottom of the buffer sleeve 5 is connected with a braided layer 7, the braided layer 7 is woven by high-strength steel wires, the braided layer 7 is connected with a cable body 6 for power transmission.

Referring to fig. 1, the outer protective sleeve 1 is a fire-resistant silane cross-linked polyethylene protective sleeve, which has strong fire-resistant, high-temperature-resistant, wear-resistant, and corrosion-resistant properties.

Referring to fig. 1, the low temperature resistant insulating layer 2 is made of a low temperature resistant insulating composite material, and can withstand a low temperature in a cold weather and adapt to more use environments.

Referring to fig. 1 and 3, the top and the bottom of the buffer sleeve 5 are provided with fixing blocks 16, a compression spring 17 is connected between the fixing blocks 16, and the buffer sleeve 5 is a rubber sleeve and can play a role of buffering by connecting the fixing blocks 16 with the compression spring 17.

Referring to fig. 1 and 2, the outer layer of the cable body 6 is provided with a reinforcing layer 13, the reinforcing layer 13 is coated with an inner shielding layer 14, the inner shielding layer 14 is coated with a wire core 15, the reinforcing layer 13 can prevent the inner part of the cable body 6 from being damaged, and the inner shielding layer 14 can be arranged for better protection.

Referring to fig. 1 and 2, the inside of the cable body 6 is connected with a connecting pipe 99, the center of the connecting pipe 99 is connected with an inner core layer, a filling layer 8 is arranged between the inner core layer and the braid layer 7, the plurality of cable bodies 6 are connected to the inner core layer by the connecting pipe 99, so that the overall layout of the cable bodies is more reasonable and stable, and then the cable bodies 6 after impact can be restored to the original positions by the filling layer 8.

Referring to fig. 1 and 2, a tube core 12 is disposed in the center of the inner core layer, an inner insulating layer 11 covers the tube core 12, the center of gravity of the center is centralized and stabilized by the tube core 12, and the connection pipes 99 are not affected by the inner insulating layer 11.

The working principle of the scheme is as follows: outer protective sheath 1 is fire-resistant silane crosslinked polyethylene lag, can have characteristics such as very strong fire prevention high temperature resistant wear-resisting corrosion resistance, and low temperature resistant insulating layer 2 adopts low temperature resistant insulating composite can tolerate the more service environment of low temperature adaptation of cold weather, then can be very well in outer protection cable body 6 through outer shielding layer 3 and the multiple protection of interior protective layer 4.

Inside at inner protective layer 4 still is provided with cushion collar 5, has fine cushioning effect, can avoid the striking to damage cable body 6, cable body 6 set up the enhancement layer 13 can avoid cable body 6 inside to receive the damage, and set up the protection that inner shield layer 14 can be better through inside, then connect cable body 6 through weaving layer 7 and weave and form, then make a plurality of cable bodies 6 be connected to the inner core layer through setting up connecting pipe 99 and make its overall arrangement reasonable more stable, then can make cable body 6 after the impact resume original position through filling layer 8.

Claims

1. The utility model provides a 10kV aerial insulated cable, includes outer protective sheath (1), its characterized in that: the cable is characterized in that the outer protective sleeve (1) is internally coated with a low-temperature-resistant insulating layer (2), the inner coating of the low-temperature-resistant insulating layer (2) is coated with an outer shielding layer (3), the inner coating of the outer shielding layer (3) is provided with an inner protective layer (4), the inner part of the inner protective layer (4) is provided with a buffer sleeve (5), the bottom of the buffer sleeve (5) is connected with a braided layer (7), and the braided layer (7) is connected with a cable body (6).

2. The 10kV overhead insulated cable of claim 1, wherein: the outer protective sleeve (1) is a fireproof silane cross-linked polyethylene protective sleeve.

3. The 10kV overhead insulated cable of claim 1, wherein: the low-temperature-resistant insulating layer (2) is made of a low-temperature-resistant insulating composite material.

4. The 10kV overhead insulated cable of claim 1, wherein: the top and the bottom of the buffer sleeve (5) are provided with fixed blocks (16), and a compression spring (17) is connected between the fixed blocks (16).

5. The 10kV overhead insulated cable of claim 1, wherein: the cable is characterized in that a reinforcing layer (13) is arranged on the outer layer of the cable body (6), an inner shielding layer (14) is coated inside the reinforcing layer (13), and a wire core (15) is coated inside the inner shielding layer (14).

6. The 10kV overhead insulated cable of claim 1, wherein: the cable comprises a cable body (6) and is characterized in that a connecting pipe (99) is connected to the inside of the cable body (6), an inner core layer is connected to the center of the connecting pipe (99), and a filling layer (8) is arranged between the inner core layer and a weaving layer (7).

7. The 10kV overhead insulated cable of claim 6, wherein: the core layer is provided with a tube core (12) in the center, and an inner insulating layer (11) is coated outside the tube core (12).