CN213211746U

CN213211746U - High-voltage silicon rubber flexible cable

Info

Publication number: CN213211746U
Application number: CN202020962670.2U
Authority: CN
Inventors: 李伟钢; 王世军; 邱金波; 王洪超
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-05-14
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to the technical field of cables, a high pressure silicon rubber flexible cable is disclosed, include the conductor that is formed by the copper wire transposition, the material of conductor is the tinned copper wire, from interior to exterior in proper order the cladding have insulation shield, compound shielding layer, outer jacket on the conductor, insulation shield includes inner shield, insulating layer, outer shielding layer outside by interior in proper order, and compound shielding layer is woven by semiconduction nylon band and tinned wire and is formed, and the cladding has the band layer on the compound shielding layer, and the outer jacket is made by silicon rubber materials. The utility model discloses have the smell of high temperature resistant, the cold-resistant acid and alkali-resistance of resistant radiation and corrosivity, characteristics such as waterproof, cable structure is soft, lays the convenience, and electrical performance is stable under the condition of high temperature, and the performance of ageing resistance is outstanding very much, and the longe-lived and extensive manufacturing industry such as petrochemical, electric power of using are used for metallurgy.

Description

High-voltage silicon rubber flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a high-pressure silicon rubber flexible cable.

Background

The high-voltage silicon rubber cable for the high-temperature environment is mainly applied to severe environments such as metallurgy, petrochemical industry, electric power and the like, the environment temperature of the cable for long-term use is more than 150 ℃, the cable has extremely high oil resistance and cold resistance, meanwhile, the cable has extremely high electrical property requirements, the partial discharge can not be more than 20Pc, most of the products are imported products at present, and the cable is still in a blank field in China.

The existing high-voltage silicon rubber cable generally adopts an extruded insulating layer without an internal and external extruded semi-conductive silicon rubber shielding layer, and because a cable conductor is formed by twisting a plurality of conducting wires, an air gap is easily formed between the cable conductor and the insulating layer, the surface of the conductor is not smooth, so that the electric field concentration is caused, the cable breakdown is caused, and the service life is influenced. For example, the Chinese utility model patent (application number: CN200820063200.1) discloses a heat-resistant environment-friendly high-voltage high-tensile high-tear-resistant insulated flexible electric wire and cable. The flexible wire comprises a conductor and an insulating layer, namely, the conductor at the center of the coaxial layered structure wire is externally provided with an environment-friendly high-pressure high-tensile high-tear-resistant insulating layer. The flexible cable comprises a conductor, a conductor insulating layer and an outer sheath, namely, the cable is provided with a concentric layered structure, the conductor at the center of the flexible cable is wrapped by an environment-friendly high-voltage high-tensile high-tear-resistant insulating layer, and the insulating layer is wrapped by an environment-friendly high-voltage high-tensile high-tear-resistant sheath layer. The long-term service temperature of the cable in the above patent is between 150-.

Disclosure of Invention

The utility model discloses to the shortcoming that high temperature resistance is poor among the prior art, life is short, provide a high-pressure silicone rubber flexible cable that high temperature resistance is good, long service life.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

high-voltage silicon rubber flexible cable, include the conductor that is formed by the copper wire transposition, the material of conductor is the tinned copper wire, from interior to exterior in proper order the cladding has insulation shield, composite shielding layer, outer jacket on the conductor, insulation shield by interior outer inner shield, insulating layer, the outer shield that includes in proper order, composite shielding layer is woven by semiconduction nylon band and tin-plated wire and is formed, the cladding has the band layer on the composite shielding layer, the outer jacket is made by silicon rubber materials.

Preferably, the temperature resistance grade of the insulation shielding layer is-60-180 degrees.

Preferably, the inner shield layer and the outer shield layer are both made of semiconductive silicone rubber.

Preferably, the outer wall of the conductor is wrapped with a semi-conductive tape.

Preferably, the temperature resistance grade of the outer protective layer is-60-180 degrees.

Preferably, the conductor comprises a plurality of conductive layers made of copper wires, the twisting distance of the conductive layers is gradually reduced from inside to outside, and the twisting directions of the adjacent conductive layers are opposite.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the high-temperature-resistant and radiation-resistant connecting cable is suitable for alternating current rated voltage and fixed power transmission lines or connecting cables for mobile electric appliances, has the characteristics of high temperature resistance, radiation resistance, cold resistance, acid and alkali resistance, corrosion resistance, water resistance and the like, is soft in cable structure, convenient to lay, stable in electrical performance under the condition of high temperature, particularly outstanding in ageing resistance, long in service life and widely used in the manufacturing industries of metallurgy, petrochemical industry, electric power and the like.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of an insulating layer.

FIG. 3 is a schematic structural diagram of a composite shielding layer

The names of the parts indicated by the numerical references in the drawings are as follows: 1-conductor, 2-insulating shielding layer, 3-composite shielding layer, 4-outer protecting layer, 5-inner shielding layer, 6-insulating layer, 7-outer shielding layer and 8-belting layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A high-voltage silicon rubber flexible cable comprises a conductor 1 formed by twisting copper wires, a semi-conducting belt is wrapped on the outer wall of the conductor 1, the conductor 1 is made of tinned copper wires, the long-term service temperature of the silicon rubber cable reaches 180 ℃ in high-temperature occasions and severe environments, therefore, the conductor material needs to select the tinned copper wires with excellent corrosion resistance and oxidation resistance, the conductor 1 is sequentially coated with an insulating shielding layer 2, a composite shielding layer 3 and an outer protective layer 4 from inside to outside, the insulating shielding layer 2 sequentially comprises an inner shielding layer 5, an insulating layer 6 and an outer shielding layer 7 from inside to outside, in order to improve the electrical insulation performance of an insulating wire core, semi-conductive silicon rubber is selected as the inner shielding layer 5 and the outer shielding layer 7, the inner shielding layer 5 and the insulating layer 6 adopt a low-temperature low-pressure vulcanization system, the outer shielding layer 7 adopts a high-temperature high-pressure vulcanization system, and the insulating shielding layer 2 produced in the mode, internal shield layer 5 and 7 surfaces of outer shielding layer are very smooth and level, 2 surface electric field distribution on insulating shield layer are more even, in order to improve sinle silk electric field distribution, reduce the partial discharge factor, and then prolong medium voltage silicon rubber power cable's life, guarantee the long-term safety and stability operation of cable, compound shielding layer 3 is woven by semiconduction nylon belt and tin-plated silk and is formed, both can effectual conduction leakage current, induced-current, shielding electromagnetic interference, can guarantee simultaneously again that the cable has better flexibility performance, the cladding has band layer 8 on the compound shielding layer 3, band layer 8 is formed around the package for non-hygroscopicity band, outer jacket 4 is made by silicon rubber materials. The temperature resistant grade of the insulating shielding layer 2 is-60 to 180 degrees. The inner shielding layer 5 and the outer shielding layer 7 are both made of semiconductive silicon rubber, and the insulating layer 6 is made of a silicon rubber insulating material.

Example 2

As shown in fig. 1 to 3, the high-voltage silicone rubber flexible cable of example 1 has an outer sheath 4 with a temperature resistance of-60 ° to 180 °. Under the conditions of bearing high temperature, low temperature or more harsh environment, the cable can still work normally and stably; the paint has good heat resistance, cold resistance, aging resistance, ozone resistance and oil resistance; has excellent mechanical and physical properties.

Example 3

As shown in fig. 1 to 3, in the high-voltage silicone rubber flexible cable according to embodiment 1, the conductor 1 includes a plurality of conductive layers made of copper wires, a lay length of the conductive layers is gradually reduced from inside to outside, and a twisting direction of adjacent conductive layers is opposite. In order to ensure the flexibility of the cable, the flexibility and the bending property of the cable conductor must be improved, and the structural design of the conductor greatly determines the performance; the thinner the conductor monofilament diameter is, the better the flexibility is; adopt the positive and negative transposition between the adjacent conducting layer of conductor, guarantee simultaneously that every layer all has less lay (outermost lay is not more than 12 times, and inferior skin is not more than 14 times, so on) bending property better, adopt nanometer to sticis the mould simultaneously, sticis the stranded conductor on the one hand, guarantee that the conductor is round tight reality, on the other hand can eliminate the burr on conductor surface and prevent point discharge, improve the surperficial smooth degree of conductor, make conductor surface electric field distribution more even.

Claims

1. High-voltage silicon rubber flexible cable, its characterized in that: including conductor (1) that is formed by the copper wire transposition, the material of conductor (1) is the tinned copper wire, from interior to exterior in proper order the cladding has insulation shield layer (2) on conductor (1), compound shielding layer (3), outer jacket (4), insulation shield layer (2) by interior outer in proper order including inner shield layer (5), insulating layer (6), outer shielding layer (7), compound shielding layer (3) are woven by semiconduction nylon belt and tin-plated wire and are formed, the cladding has band layer (8) on compound shielding layer (3), outer jacket (4) are made by the silicon rubber material.

2. The high voltage silicone rubber flexible cable according to claim 1, wherein: the temperature-resistant grade of the insulating shielding layer (2) is-60 to 180 degrees.

3. The high voltage silicone rubber flexible cable according to claim 1, wherein: the inner shielding layer (5) and the outer shielding layer (7) are both made of semi-conductive silicon rubber.

4. The high voltage silicone rubber flexible cable according to claim 1, wherein: the outer wall of the conductor (1) is wrapped with a semi-conducting belt.

5. The high voltage silicone rubber flexible cable according to claim 1, wherein: the temperature-resistant grade of the outer protective layer (4) is-60-180 degrees.

6. The high voltage silicone rubber flexible cable according to claim 1, wherein: the conductor (1) comprises a plurality of conducting layers made of copper wires, the twisting distance of the conducting layers is gradually reduced from inside to outside, and the twisting directions of the adjacent conducting layers are opposite.