CN216957558U

CN216957558U - Extrusion-resistant anti-cracking low-voltage power cable

Info

Publication number: CN216957558U
Application number: CN202123075208.4U
Authority: CN
Inventors: 茆成彦; 周寿清; 韦佳; 王维路; 李程; 曹囯良
Original assignee: JIANGSU RUNHUA CABLE SHAREHOLDING CO Ltd
Current assignee: JIANGSU RUNHUA CABLE SHAREHOLDING CO Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-07-12
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses an extrusion-resistant and cracking-resistant low-voltage power cable, which belongs to the technical field of power cables and comprises a protective sleeve, wherein the inner wall of the protective sleeve is provided with a cracking-resistant layer, the inner wall of the cracking-resistant layer is provided with an armor layer, the inner wall of the armor layer is provided with a pressure-resistant layer, the inner wall of the pressure-resistant layer is provided with a heat-insulating layer, four groups of conductors are arranged in the heat-insulating layer, the four groups of conductors are distributed in an annular array manner in the heat-insulating layer, and filling materials are filled in the heat-insulating layer. Prevent the cable from cracking caused by bending and stretching of the cable.

Description

Extrusion-resistant anti-cracking low-voltage power cable

Firstly, the method comprises the following steps: Technical Field

The utility model relates to the technical field of power cables, in particular to an extrusion-resistant anti-cracking low-voltage power cable.

II, secondly: background

The electric wire and cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and the proportion of the electric wire and cable in the power lines is gradually increased. Wire and cable is a product of cables used in the trunk lines of electric power systems to transmit and distribute high power electric energy, including various voltage classes of 1-500KV and above, and various insulated electric power cables.

The existing electric wire and cable do not have a good anti-cracking function, the cable can crack due to the fact that the tensile bending hardness of the cable is too high, and the cable can crack under the condition of different climates, so that the cable cannot work well, and the service life of the cable is shortened.

Thirdly, the method comprises the following steps: SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an extrusion-resistant anti-cracking low-voltage power cable, wherein the existing power cable does not have a good anti-cracking function, the cable can crack due to overlarge tensile bending hardness of the cable, and the cable can crack under different climates, so that the cable cannot work well, the service life of the cable is shortened, and the problem in the background technology is solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an anti low voltage power cable that ftractures of resistant extrusion, includes the lag, the lag inner wall is equipped with prevents the schizophragma, it is equipped with the armor to prevent the schizophragma inner wall, the armor inner wall is equipped with the withstand voltage layer, the withstand voltage layer inner wall is equipped with the insulating layer, the inside conductor of four groups that is equipped with of insulating layer, four groups the conductor is the ring array and distributes inside the insulating layer, the inside packing of insulating layer is equipped with the stopping.

Preferably, the conductor includes the sinle silk, the sinle silk outer wall is equipped with the shielding layer, the shielding layer outer wall is equipped with the insulating layer, the insulating layer outer wall is equipped with the protective layer.

Preferably, a reinforcing rib is longitudinally arranged at the center of the interior of the filling material.

Preferably, the anti-cracking layer is a nylon woven net.

Preferably, the shielding layer is made of aluminum foil.

Preferably, the protective sleeve is made of ST insulating material.

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

1. this practicality sets up the anti-cracking layer, can improve power cable's anti-cracking property under the effect on anti-cracking layer, has strengthened the anti-cracking ability of cable greatly under the effect of armor simultaneously.

2. This practicality sets up the resistance to pressure layer, has strengthened the compressive capacity of cable under the effect of resistance to pressure layer, has improved the resistant extrusion performance of cable, avoids the cable to take place the fracture because of long-term extrusion, can improve the service strength and the stretch-proofing performance of cable simultaneously under the effect of strengthening rib, prevents that the crooked tensile of cable from causing the cable fracture.

3. This practicality sets up the insulating layer, can guarantee wire and cable's normal use temperature under the effect of insulating layer, even the problem of fracture appears in the sclerosis can not appear even in the low temperature environment yet.

Fourthly, the method comprises the following steps: drawings

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

FIG. 2 is a schematic view of a conductor structure according to the present invention.

In the figure: 1. a filler; 2. reinforcing ribs; 3. a conductor; 4. a thermal insulation layer; 5. a pressure-resistant layer; 6. an armor layer; 7. an anti-cracking layer; 8. a protective sleeve; 9. a wire core; 10. a shielding layer; 11. an insulating layer; 12. and a protective layer.

Fifthly: 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: the utility model provides an anti low voltage power cable that ftractures of resistant extrusion, including

lag

8, 8 inner walls of lag are equipped with anti-cracking layer 7, anti-cracking layer 7 inner walls are equipped with

armor

6, 6 inner walls of armor are equipped with resistance to

pressure

5, 5 inner walls of resistance to pressure are equipped with insulating layer 4, 4 inside four group's conductors 3 that are equipped with of insulating layer, four group's conductors 3 are the ring array distribution in insulating layer 4 inside, conductor 3 includes sinle silk 9, sinle silk 9 outer wall is equipped with shielding layer 10, shielding layer 10's material is the aluminium foil material, can shield external interference under shielding layer 10's effect, the normal work shielding layer 10 outer wall that can guarantee the cable is equipped with insulating layer 11, insulating layer 11 outer wall is equipped with protective layer 12, 4 inside packing of insulating layer is equipped with stopping 1, make four group's conductors 3 inside more stable at insulating layer 4 under stopping 1's effect.

In this embodiment, referring to fig. 1, the anti-cracking layer 7 is a nylon woven mesh, and the anti-cracking property of the power cable can be improved under the action of the anti-cracking layer 7.

In this embodiment, referring to fig. 1, the protective sleeve 8 is made of ST insulating material, and the cable can be protected by the protective sleeve 8.

Example 2

Referring to fig. 1, this embodiment is different from the first embodiment in that: the reinforcing ribs 2 are longitudinally arranged at the center inside the filling material 1, and the use strength and the tensile resistance of the cable can be improved under the action of the reinforcing ribs 2.

The working principle is as follows: the anti-cracking performance of the power cable can be improved under the action of the anti-cracking layer 7, the anti-cracking performance of the cable is greatly improved under the action of the armor layer 6, meanwhile, the compression resistance of the cable is improved under the action of the pressure-resistant layer 5, the extrusion resistance of the cable is improved, the cable is prevented from cracking due to long-term extrusion, meanwhile, the use strength and the anti-stretching performance of the cable can be improved under the action of the reinforcing ribs 2, the cable is prevented from cracking due to bending and stretching, the normal use temperature of the wire cable can be guaranteed under the action of the heat insulation layer 4, and even in a low-temperature environment, the problem of hardening and even cracking cannot occur.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti low voltage power cable that ftractures is resisted to resistant extrusion, includes lag (8), its characterized in that: lag (8) inner wall is equipped with prevents ftractureing (7), prevent that ftractureing (7) inner wall is equipped with armor (6), armor (6) inner wall is equipped with pressure resistance (5), pressure resistance (5) inner wall is equipped with insulating layer (4), insulating layer (4) inside is equipped with four group's conductor (3), four groups conductor (3) are inside to be the annular array and distribute in insulating layer (4), insulating layer (4) inside packing is equipped with stopping (1).

2. The crush resistant, crack resistant low voltage power cable of claim 1, wherein: conductor (3) are including sinle silk (9), sinle silk (9) outer wall is equipped with shielding layer (10), shielding layer (10) outer wall is equipped with insulating layer (11), insulating layer (11) outer wall is equipped with protective layer (12).

3. The crush resistant, crack resistant low voltage power cable of claim 1, wherein: and a reinforcing rib (2) is longitudinally arranged at the center of the interior of the filling material (1).

4. The crush resistant, crack resistant low voltage power cable of claim 1, wherein: the anti-cracking layer (7) is a nylon woven net.

5. The crush resistant, crack resistant low voltage power cable of claim 2, wherein: the shielding layer (10) is made of aluminum foil.

6. The crush resistant, crack resistant low voltage power cable of claim 1, wherein: the protective sleeve (8) is made of an ST insulating material layer.