CN216084420U

CN216084420U - Cable for transformer

Info

Publication number: CN216084420U
Application number: CN202122208729.6U
Authority: CN
Inventors: 姜锌
Original assignee: Shenyang Yeqiao Cable Manufacturing Co ltd
Current assignee: Shenyang Yeqiao Cable Manufacturing Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-18
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses a cable for a transformer, which relates to the technical field of power transmission and comprises a wire layer, wherein the outer surface of the wire layer is wrapped with a mesh-shaped shielding layer, the outer surface of the mesh-shaped shielding layer is wrapped with a ceramic fireproof layer, the outer surface of the ceramic fireproof layer is wrapped with a buffer layer, the outer surface of the buffer layer is wrapped with a waterproof layer, the cable for the transformer is provided with the ceramic fireproof layer, has a better heat dissipation effect and an insulation effect, can bear higher voltage without being punctured, prevents electric power damage to passerby or constructors caused by electric leakage, has three-fourth filling proportion of ceramic powder, prevents the damage caused by the extrusion of the ceramic powder on the inner wall and the outer wall of the cable when the cable is bent, has better heat resistance and is not easy to generate other chemical reactions at high temperature, and molecular sieve drying agents are filled in the waterproof layer, the water-absorbing agent can also have a better water-absorbing effect under outdoor insolation or high-temperature cable working environment.

Description

Cable for transformer

Technical Field

The utility model relates to the technical field of power transmission, in particular to a cable for a transformer.

Background

The cable is generally a cable similar to a rope formed by twisting several or several groups of wires, each group of wires are mutually insulated and often twisted around a center, the whole outer surface is wrapped with a high-insulation covering layer, the cable has the characteristics of internal electrification and external insulation, and the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

Present transformer cable realizes efficiency such as dampproofing fire prevention through installing multiple protection such as steel armour layer, outer protective layer additional, often makes cable weight great, has great inconvenience in the transportation installation, and steel armour layer, outer protective layer are often damaged easily in the condition such as dragging of bending for a long time simultaneously to shorten cable life greatly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the deficiencies of the prior art, the present invention provides a cable for a transformer that solves the problems noted in the background above.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a cable for transformer, includes the wire layer, the surface parcel on wire layer has netted shielding layer, the surface parcel of netted shielding layer has the ceramic flame retardant coating, the surface parcel of ceramic flame retardant coating has the buffer layer, the surface parcel of buffer layer has the waterproof layer.

Preferably, the reticular shielding layer is a reticular metal woven layer made of brass, and the tail end of the reticular shielding layer is grounded.

Preferably, the ceramic fireproof layer is a rubber pipeline filled with ceramic powder, and the filling amount is three-fourths.

Preferably, a buffer spring is fixedly connected between the inner wall and the outer wall of the buffer layer.

Preferably, the interior of the waterproof layer is filled with a molecular sieve desiccant, and the filling amount is up to one half.

Preferably, the upper end and the lower end of the buffer spring are annular, and burrs on the outer wall of the buffer spring are smaller than ten percent of the thickness of the buffer spring.

(III) advantageous effects

The utility model provides a cable for a transformer. The method has the following beneficial effects:

(1) this a cable for transformer is provided with the ceramic flame retardant coating, this ceramic flame retardant coating has better radiating effect, also can play insulating effect simultaneously, can bear higher voltage and not punctured, prevent that the electric leakage from leading to the fact the electric power injury to passerby or constructor, ceramic powder's filling ratio is three fourths, prevent that the cable from ceramic powder extrusion inside and outside wall when bending from causing the damage, this ceramic powder's heat resistance is also better and be difficult for producing other chemical reactions under high temperature.

(2) The outermost layer of the cable for the transformer is provided with the waterproof layer, the molecular sieve drying agent is filled in the waterproof layer, and only molecules with the diameter smaller than the pore diameter are allowed to enter the waterproof layer, so that the molecules in the mixture can be screened according to the size, the waterproof layer also has a better moisture adsorption effect under outdoor exposure or high-temperature environment of cable work, and the molecular sieve drying agent in the waterproof layer can be taken out for high-temperature regeneration after the cable is scrapped.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

fig. 2 is a schematic longitudinal cross-sectional view of the structure of the present invention.

In the figure: 1. a conductor layer; 2. a mesh-shaped shielding layer; 3. a ceramic fire barrier layer; 4. a buffer layer; 5. a waterproof layer; 401. a buffer spring.

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.

Referring to fig. 1-2, the present invention provides a technical solution: a cable for transformer, including the wire layer 1, the inside wire gap department of the wire layer 1 is packed with the fibre and filled, the surface parcel of the wire layer 1 has netted shielding layer 2, netted shielding layer 2 is the netted metal braiding layer that adopts the brass material, the tail end of netted shielding layer 2 is provided with the ground connection, the external interference signal can be led into the ground by the layer, also have effects of preventing the circuit from radiating the electromagnetic energy outwards, the surface parcel of netted shielding layer 2 has ceramic flame retardant coating 3, the cable for transformer is provided with ceramic flame retardant coating 3, the ceramic flame retardant coating 3 has better heat dissipation effect, can also play the insulating effect at the same time, can bear the higher voltage and not be punctured, prevent that the electric leakage from causing the electric injury to passerby or constructor, the packing proportion of ceramic powder is three fourths, prevent the cable from causing the damage in ceramic powder extrusion inside and outside wall when bending, the ceramic powder is also good in heat resistance and is not easy to generate other chemical reactions at high temperature, the ceramic fireproof layer 3 is a rubber pipeline filled with the ceramic powder, the filling amount reaches three fourths, the outer surface of the ceramic fireproof layer 3 is wrapped by the buffer layer 4, the buffer spring 401 is fixedly connected between the inner wall and the outer wall of the buffer layer 4, the upper end and the lower end of the buffer spring 401 are annular, burrs on the outer wall of the buffer spring 401 are less than ten percent of the thickness of the buffer spring 401, the outer wall burrs of the metal buffer spring 401 are prevented from scratching and damaging the inner wall and the outer wall of the buffer layer 4 in extrusion bending, the outer surface of the buffer layer 4 is wrapped by the waterproof layer 5, the outermost layer of the cable for the transformer is provided with the waterproof layer 5, the waterproof layer 5 is internally filled with a molecular sieve drying agent which only allows molecules with small diameter ratio to enter, so that molecules in the mixture can be sieved according to size, the cable drying agent has the advantages that the moisture adsorption effect can be better under outdoor exposure or the high-temperature working environment of the cable, the molecular sieve drying agent in the cable drying agent can be taken out to be regenerated at high temperature after the cable is scrapped, the molecular sieve drying agent is filled in the waterproof layer 5, the filling amount reaches one half, and the molecular sieve drying agent is prevented from extruding the inner wall and the outer wall to cause damage when the cable is bent.

During operation (or during the use), the outermost waterproof layer 5 adsorbs the drying to cable and air contact part, also can take out interior molecular sieve drier when the cable is scrapped to retrieve and heats to 350 ℃ down the gas regeneration, buffer spring 401 in buffer layer 4 can carry out certain buffering to the cable when cable installation or placing to buffer spring 401 evenly distributed can protect the pressure of a plurality of directions in buffer layer 4, the tail end of this netted shielding layer 2 needs to carry out ground connection when the installation and handles.

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. A cable for a transformer, comprising a conductor layer (1), characterized in that: the surface parcel of wire layer (1) has netted shielding layer (2), the surface parcel of netted shielding layer (2) has ceramic flame retardant coating (3), the surface parcel of ceramic flame retardant coating (3) has buffer layer (4), the surface parcel of buffer layer (4) has waterproof layer (5).

2. A cable for a transformer according to claim 1, wherein: the reticular shielding layer (2) is a reticular metal woven layer made of brass, and the tail end of the reticular shielding layer (2) is grounded.

3. A cable for a transformer according to claim 1, wherein: the ceramic fireproof layer (3) is a rubber pipeline filled with ceramic powder, and the filling amount is three quarters.

4. A cable for a transformer according to claim 1, wherein: and a buffer spring (401) is fixedly connected between the inner wall and the outer wall of the buffer layer (4).

5. A cable for a transformer according to claim 1, wherein: and a molecular sieve drying agent is filled in the waterproof layer (5) and the filling amount is up to one half.

6. A cable for a transformer according to claim 4, wherein: the upper end and the lower end of the buffer spring (401) are annular, and burrs on the outer wall of the buffer spring (401) are smaller than ten percent of the thickness of the buffer spring (401).