CN219066563U

CN219066563U - Dry-type transformer

Info

Publication number: CN219066563U
Application number: CN202223174276.0U
Authority: CN
Inventors: 程峰; 孙业锋; 程志永
Original assignee: Yangzhou Yongding Electric Technology Co ltd
Current assignee: Yangzhou Yongding Electric Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-23
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the technical field of transformers and discloses a dry-type transformer, which comprises a base, wherein an external box body is arranged at the top of the base, a plurality of limiting rings are arranged at the top of the external box body, sliding buffer rings are arranged in the limiting rings, radiating grids are arranged at the left side and the right side of the external box body, windings fixed on the base are arranged in the external box body, each winding respectively comprises an iron core, a low-voltage insulating winding, an epoxy resin pouring layer and a high-voltage insulating winding which are sequentially sleeved outside the iron core, the three windings are connected through a high-voltage connecting bus, the base comprises a supporting beam, a fixed beam is arranged below the supporting beam, the fixed beam is grounded, a fan is arranged above the supporting beam, an anti-collision assembly and the radiating grids are arranged at the outer side of the dry-type transformer, and small animals and the like can be effectively prevented from entering the box body during outdoor installation, and meanwhile, heat dissipation is also taken into account.

Description

Dry-type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a dry-type transformer.

Background

The transformer is an important device in power generation, power supply and power utilization enterprises, is extremely critical in the power grid, and is an extremely important device for ensuring the safety of the power grid, reliable operation and people production and life power utilization, and the structure and the manufactured material of the transformer directly influence the quality and the safety of the power supply.

In 1886, the transformers are dry transformers (hereinafter referred to as dry transformers), the level of insulating materials is limited at the moment, the dry transformers are difficult to realize high voltage and large capacity, and by the end of 19 th century, people find that the insulating and cooling performances of the transformers can be greatly improved by adopting transformer oil, so that the oil immersed transformers (referred to as oil transformers) gradually replace the dry transformers, after the second battle, the world economy is restored and rebuilt, particularly europe and the united states are rapidly developed, some large cities advance towards modernization at extremely high speed, and as urban power supply loads are continuously increased, the concentration of residences and the increase of high-rise buildings and underground buildings are increased, so that the transformers which can be deep in load centers and have excellent fireproof, explosion-proof and environmental protection performances are urgently needed, and the dry transformers are paid attention and adopted again.

Dry transformers have many advantages: the dry type transformer is widely used because of the advantages of flame resistance, moisture resistance, small volume, strong short circuit resistance and the like, so that the dry type transformer is one of the most common and hottest transformers, and the existing dry type transformer mainly adopts a method of integrally arranging a high-voltage coil and a low-voltage coil in an epoxy resin insulating layer formed by pouring to solve the insulating problem, but the method has the defects that the epoxy resin has high brittleness and poor impact damage resistance, and the heat generated by the transformer is high when the transformer works in overload, the temperature is high, the epoxy resin has poor heat resistance, thus limiting the overload operation capacity of the dry type transformer, such as a dry type transformer proposed by China patent, with publication No. CN202736642U, and the problem that the insulating performance of the dry type transformer is poor is mainly solved when the dry type transformer is used is solved, but a solution is not provided for the problem that the transformer is collided or has too high temperature when the transformer works in overload.

Disclosure of Invention

(one) solving the technical problems

The utility model provides a dry type transformer which solves the problems in the prior art.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dry-type transformer, includes three winding groups, every winding includes the iron core respectively and overlaps the low voltage insulation winding, epoxy layer and the high voltage insulation winding of locating the iron core outside in proper order, winding bottom fixed mounting is on a supporting beam top, winding top fixed mounting has a top mount, a fixed beam is installed to a supporting beam bottom, the fixed beam ground connection, external box is installed in the winding outside, the fan is installed to the bottom that corresponds the winding in supporting beam middle part, through above-mentioned structure, supporting beam plays the effect of accepting dry-type transformer with the fixed beam, external box can be fine play prevent that outside toy from getting into inside the transformer box and destroying.

Preferably, the top fixing frame is an I-shaped groove frame, and a steel plate is connected between the two groove frames, so that the stability of the top of the dry-type transformer is improved conveniently.

Preferably, a plurality of anti-collision devices are arranged at the top of the external box body and the lower half part of the front surface, heat dissipation grids are arranged at the left side and the right side of the external box body, the anti-collision devices can effectively prevent outside collision so as not to influence a transformer, the left side and the right side of the heat dissipation grids are provided with the anti-collision device, the inside and outside circulation of air flow can be realized outdoors, and the fact that the temperature of the transformer is not too high to damage an epoxy resin layer is guaranteed.

Preferably, the anti-collision device comprises a plurality of limiting rings and sliding buffer rings, the limiting rings are symmetrically arranged relative to the central line of the top surface of the external box body, the limiting rings are connected through the sliding buffer rings, the limiting rings are arranged at the top of the box body and the lower front half part, the sliding buffer rings are arranged in the ring bodies of the limiting rings, and when the anti-collision device is impacted, the sliding buffer rings can effectively weaken impact force.

Preferably, the limiting grooves are formed in the middle of the limiting ring and the middle of the sliding buffer ring, and the sliding buffer ring is sleeved in the limiting groove in the middle of the limiting ring.

Preferably, the sliding buffer ring adopts rubber as a raw material, the rubber has good elasticity and flexibility, the material is simple and easy to obtain, the price is low, and the replacement is convenient.

(III) beneficial effects

Compared with the prior art, the utility model provides a dry-type transformer, which has the following beneficial effects:

1. this dry-type transformer, inside is equipped with the fan, and the outside is equipped with external box, has solved the transformer trouble that probably receives circumstances such as collision to lead to in the open air when taking into account the heat dissipation, implements simple convenient.

Drawings

FIG. 1 is an overall diagram of a transformer;

FIG. 2 is a front view of a transformer;

FIG. 3 is a block diagram of a bump guard;

fig. 4 is a view showing the internal structure of the apparatus.

In the figure: 1. a winding; 2. a top mount; 3. a support beam; 4. a fixed beam; 5. an external box body; 6. a fan; 7. an anti-collision device; 8. a heat-dissipating grille; 9. a limiting ring; 10. sliding buffer ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a dry-type transformer comprises three groups of windings 1, each winding 1 comprises an iron core, and a low-voltage insulation winding, an epoxy resin pouring layer and a high-voltage insulation winding which are sequentially sleeved outside the iron core, the bottom of each winding 1 is fixedly arranged at the top end of a supporting beam 3, the top of each winding 1 is fixedly provided with a top fixing frame 2, the bottom of each supporting beam 3 is provided with a fixing beam 4, the fixing beams 4 are grounded, the outside of each winding 1 is provided with an external box 5, the middle of each supporting beam is provided with a fan 6 corresponding to the bottom of each winding 1, through the structure, the supporting beams 3 and the fixing beams 4 play a role of supporting the dry-type transformer, and the external box 5 can well play a role of preventing small animals outside from entering the inside of the transformer box to be destroyed.

The top fixing frame 2 is an I-shaped groove frame, and a steel plate is connected between the two groove frames, so that the stability of the top of the dry-type transformer is improved conveniently.

The external box body 5.

The anti-collision device 7 comprises a plurality of limiting rings 9 and sliding buffer rings 10, the limiting rings 9 are symmetrically arranged relative to the central line of the top surface of the external box body 5, the limiting rings 9 are connected through the sliding buffer rings 10, the limiting rings 9 are arranged at the top of the box body and the lower front half part, the sliding buffer rings 10 are arranged in the ring bodies of the limiting rings 9, and the sliding buffer rings 10 can effectively weaken impact force when being collided.

Limiting grooves are formed in the middle of the limiting ring 9 and the middle of the sliding buffer ring 10, and the sliding buffer ring 10 is sleeved in the limiting groove in the middle of the limiting ring 9.

The sliding buffer ring 10 adopts rubber as a raw material, the rubber has good elasticity and flexibility, the material is simple and easy to obtain, the price is low, and the replacement is convenient.

Instructions for use

When the transformer is used, the winding 1 is firstly installed on the supporting beam 3, then the fixed beam 4 and the external box body 5 are sequentially installed, a plurality of anti-collision devices 7 are arranged at the top of the external box body 5 and the lower half part of the front surface of the external box body, the heat dissipation grids 8 are arranged at the left side and the right side of the external box body 5, the anti-collision devices 7 can effectively prevent outside collision so as not to influence the transformer, the heat dissipation grids 8 are arranged at the left side and the right side, the air flow internal and external circulation can be realized outdoors, the transformer temperature is ensured not to be too high, the damage to the epoxy resin layer is avoided, the device cannot operate, and the problem that the transformer is accidentally collided or the temperature is too high during overload operation is solved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 a dry-type transformer, includes three winding (1), and every winding (1) includes the iron core respectively and overlaps the low voltage insulation winding, epoxy layer and the high voltage insulation winding of locating the iron core outside in proper order, a serial communication port, winding (1) bottom fixed mounting is on a supporting beam (3) top, winding (1) top fixed mounting has top mount (2), fixed beam (4) are installed to supporting beam (3) bottom, fixed beam (4) ground connection, external box (5) are installed in winding (1) outside, fan (6) are installed to the bottom of supporting beam (3) middle part corresponding winding (1).

2. A dry-type transformer according to claim 1, wherein: the top fixing frame (2) is an I-shaped groove frame, and a steel plate is connected between the two groove frames.

3. A dry-type transformer according to claim 1, wherein: the anti-collision device is characterized in that a plurality of anti-collision devices (7) are fixedly arranged at the top of the external box body (5) and the lower half part of the front surface, and radiating grids (8) are arranged at the left side and the right side of the external box body (5).

4. A dry-type transformer according to claim 3, wherein: the anti-collision device (7) comprises a plurality of limiting rings (9) and sliding buffer rings (10), the limiting rings (9) are symmetrically arranged relative to the central line of the top surface of the external box body (5), and the limiting rings (9) are connected through the sliding buffer rings (10).

5. A dry-type transformer according to claim 4, wherein: limiting grooves are formed in the middle of the limiting ring (9) and the middle of the sliding buffer ring (10), and the sliding buffer ring (10) is sleeved in the limiting groove in the middle of the limiting ring (9).

6. A dry-type transformer according to claim 4, wherein: the sliding buffer ring (10) adopts rubber as a raw material.