CN212907326U

CN212907326U - High-voltage coil structure of epoxy resin cast dry-type transformer

Info

Publication number: CN212907326U
Application number: CN202021490296.7U
Authority: CN
Inventors: 刘剑
Original assignee: Taizhou Yuyang Electric Co ltd
Current assignee: Taizhou Yuyang Electric Co ltd
Priority date: 2020-07-26
Filing date: 2020-07-26
Publication date: 2021-04-06
Anticipated expiration: 2030-07-26

Abstract

The utility model discloses a high-voltage coil structure of epoxy pouring dry-type transformer relates to dry-type transformer technical field, for solving the current not good problem of high-voltage coil radiating effect. The utility model discloses a wind power generation device, including iron yoke, iron core, double-layer netted glass fiber insulating layer, double-layer connecting piece, double-layer netted glass fiber insulating layer and double-layer netted glass fiber insulating layer are connected to the iron yoke, and the iron yoke is provided with two, two.

Description

High-voltage coil structure of epoxy resin cast dry-type transformer

Technical Field

The utility model relates to a dry-type transformer technical field specifically is an epoxy pours high-tension coil structure of dry-type transformer.

Background

Epoxy resin materials are now widely used as main insulating materials in the field of manufacturing of power equipment such as transformers, transformers and insulators. The epoxy resin cast dry type transformer has the characteristics of difficult combustion, safety, reliable operation, convenient maintenance, small volume and the like, is widely applied to places such as urban high-rise buildings, power stations and the like, and a coil is an electrical element for inputting and outputting electric energy of the transformer, is the most important and basic component, is also a main component for overhauling the transformer and is called as a 'heart' of the transformer. Since it substantially determines the capacity, voltage, current and conditions of use of the transformer.

However, the existing high-voltage coil has poor heat dissipation effect, so that the existing requirements are not met, and an epoxy resin cast dry-type transformer high-voltage coil structure is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-tension coil structure of epoxy pouring dry-type transformer to solve the current not good problem of high-tension coil radiating effect who provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an epoxy pours high-tension coil structure of dry-type transformer, includes the yoke iron, the yoke iron is provided with two, two install the iron core between the yoke iron, and iron core and yoke iron fixed connection, and the iron core is provided with two, the outside of iron core is provided with low-voltage coil, the outside of low-voltage coil is provided with double-deck netted glass fiber insulating layer, double-deck netted glass fiber insulating layer includes a plurality of connecting pieces, the both sides of connecting piece all are provided with the wind channel, the outside of double-deck netted glass fiber insulating layer is provided with high-voltage coil, high-voltage coil's the outside is provided with the netted glass fiber insulating layer.

Preferably, an isolation layer is arranged between the iron core and the low-voltage coil and fixedly connected with the iron core.

Preferably, the connecting piece is connected with the double-layer reticular glass fiber insulating layer in a gluing mode.

Preferably, the double-layer reticular glass fiber insulating layer and the single-layer reticular glass fiber insulating layer are both arranged into a reticular structure.

Preferably, the iron yoke is riveted with the iron core.

Preferably, eight air ducts are provided.

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

1. the utility model discloses a set up netted glass fiber insulating layer into bilayer structure to set up a plurality of wind channel structures in the inside of double-deck netted glass fiber insulating layer, and the wind channel is arranged in between low voltage coil and the high-pressure coil, can spill the heat of low voltage coil and high-pressure coil during operation fast through the wind channel, cool down the coil, avoid the coil high temperature, guarantee the stability of epoxy pouring dry-type transformer during operation, improved high-pressure coil's radiating effect.

2. The utility model discloses an add the isolation layer between iron core and low-voltage coil, can prevent winding and iron core adhesion, reduce the oxidation of iron core, improve the use intensity of iron core to prolong its life.

3. The utility model discloses a with the netted glass fiber insulation layer of double-deck and individual layer all set up to network structure, when carrying out the die-filling pouring after the coil is coiled and is accomplished, epoxy can permeate the inside of coil, network structure does benefit to the infiltration of resin to high-pressure coil's pouring effect has been improved greatly.

Drawings

Fig. 1 is a front view of a high-voltage coil structure of an epoxy resin cast dry-type transformer according to the present invention;

fig. 2 is a schematic structural diagram of a high-voltage coil structure of an epoxy resin cast dry-type transformer according to the present invention;

fig. 3 is a schematic structural diagram of the single-layer mesh glass fiber insulating layer of the present invention.

In the figure: 1. an iron yoke; 2. an iron core; 3. a low-voltage coil; 4. a double-layer reticular glass fiber insulating layer; 5. a connecting member; 6. an air duct; 7. a high-voltage coil; 8. a single layer of reticulated glass fiber insulation; 9. an isolation layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a high-voltage coil structure of an epoxy resin cast dry type transformer comprises iron yokes 1, two iron yokes 1 are arranged, an iron core 2 is arranged between the two iron yokes 1, the iron core 2 is fixedly connected with the iron yokes 1, the iron core 2 is provided with two, a low-voltage coil 3 is arranged on the outer side of the iron core 2, a double-layer reticular glass fiber insulating layer 4 is arranged on the outer side of the low-voltage coil 3, the double-layer reticular glass fiber insulating layer 4 comprises a plurality of connecting pieces 5, air channels 6 are arranged on two sides of each connecting piece 5, a plurality of air channel 6 structures are arranged inside the double-layer reticular glass fiber insulating layer 4, the air channels 6 are arranged between the low-voltage coil 3 and the high-voltage coil 7, heat generated when the low-voltage coil 3 and the high-voltage coil 7 work can be rapidly dissipated through the air channels 6, rapid cooling is carried out on the low-voltage coil 3 and the, the stability of epoxy resin pouring dry-type transformer during operation is guaranteed, high-voltage coil 7 is arranged on the outer side of double-layer netted glass fiber insulating layer 4, single-layer netted glass fiber insulating layer 8 is arranged on the outer side of high-voltage coil 7, and the netted glass fiber insulating layer has good flexibility, certain mechanical strength, higher insulation resistance value and small loss to electromagnetic waves.

Further, be provided with isolation layer 9 between iron core 2 and the low voltage coil 3, and isolation layer 9 and iron core 2 fixed connection, isolation layer 9 can prevent iron core 2 and winding adhesion, reduces iron core 2's oxidation, improves iron core 2's use strength to prolong its life.

Furthermore, the connecting piece 5 is connected with the double-layer reticular glass fiber insulating layer 4 in a gluing way, and has good sealing property, insulating property and corrosion resistance.

Further, double-deck netted glass fiber insulating layer 4 and the netted glass fiber insulating layer 8 of individual layer all set up to network structure, because netted glass fiber insulating layer 8 of individual layer and double-deck netted glass fiber insulating layer 4 all set up to network structure for epoxy can permeate low pressure coil 3 and high pressure coil 7's inside, network structure does benefit to the infiltration of resin, thereby has improved the pouring effect to high pressure coil 7 and low pressure coil 3 greatly.

Further, yoke 1 is connected with 2 riveting of iron core, and joint strength is high, and the leakproofness is good, and simple structure.

Further, the eight air ducts 6 are provided, and the air ducts 6 for heat dissipation are provided to improve the heat dissipation effect and the heat dissipation efficiency.

The working principle is as follows: when in use, the isolation layer 9 is arranged outside the iron core 2, the low-voltage coil 3 is wound outside the isolation layer 9, the isolation layer 9 can prevent the iron core 2 from being adhered to a winding, the oxidation of the iron core 2 is reduced, the use strength of the iron core 2 is improved, the service life of the iron core is prolonged, then the double-layer reticular glass fiber insulation layer 4 is arranged outside the low-voltage coil 3, the high-voltage coil 7 is wound outside the double-layer reticular glass fiber insulation layer 4, finally, the single-layer reticular glass fiber insulation layer 8 is arranged outside the high-voltage coil 7 to complete winding, and mold filling and pouring can be carried out after the coil winding is completed, because the single-layer reticular glass fiber insulation layer 8 and the double-layer reticular glass fiber insulation layer 4 are both of a reticular structure, the epoxy resin can permeate into the low-voltage coil 3 and the high-voltage coil 7, the reticular structure is beneficial to the permeation of the, because set up a plurality of wind channels 6 structures in the inside of double-deck netted glass fiber insulating layer 4, and wind channel 6 arranges in between low voltage coil 3 and high voltage coil 7, can spill the heat of low voltage coil 3 and high voltage coil 7 during operation fast through wind channel 6, carry out rapid cooling to low voltage coil 3 and high voltage coil 7, avoid the high temperature of low voltage coil 3 and high voltage coil 7, guarantee the stability of epoxy pouring dry-type transformer during operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high-voltage coil structure of epoxy pouring dry-type transformer, includes yoke (1), its characterized in that: iron yoke (1) is provided with two, two install iron core (2) between iron yoke (1), and iron core (2) and iron yoke (1) fixed connection, and iron core (2) are provided with two, the outside of iron core (2) is provided with low voltage coil (3), the outside of low voltage coil (3) is provided with double-deck netted glass fiber insulating layer (4), double-deck netted glass fiber insulating layer (4) include a plurality of connecting pieces (5), the both sides of connecting piece (5) all are provided with wind channel (6), the outside of double-deck netted glass fiber insulating layer (4) is provided with high-voltage coil (7), the outside of high-voltage coil (7) is provided with single-deck netted glass fiber insulating layer (8).

2. The high-voltage coil structure of the epoxy resin cast dry-type transformer as claimed in claim 1, wherein: an isolation layer (9) is arranged between the iron core (2) and the low-voltage coil (3), and the isolation layer (9) is fixedly connected with the iron core (2).

3. The high-voltage coil structure of the epoxy resin cast dry-type transformer as claimed in claim 1, wherein: the connecting piece (5) is connected with the double-layer reticular glass fiber insulating layer (4) in an adhesive joint mode.

4. The high-voltage coil structure of the epoxy resin cast dry-type transformer as claimed in claim 1, wherein: the double-layer reticular glass fiber insulating layer (4) and the single-layer reticular glass fiber insulating layer (8) are both arranged to be of a reticular structure.

5. The high-voltage coil structure of the epoxy resin cast dry-type transformer as claimed in claim 1, wherein: the iron yoke (1) is riveted with the iron core (2).

6. The high-voltage coil structure of the epoxy resin cast dry-type transformer as claimed in claim 1, wherein: eight air ducts (6) are arranged.