Foil winding air passage structure of dry-type transformer

Abstract

The utility model discloses a foil winding air passage structure of a dry-type transformer, which comprises an outer ring and an inner ring, and a support piece is arranged between the inner ring and the outer ring. The number of the supporting pieces is multiple, and an air channel is formed between any two adjacent supporting pieces. The supporting piece comprises a first plate body and a second plate body, and a first elastic part and a second elastic part are arranged between the opposite faces of the first plate body and the second plate body. On the basis, after the supporting piece is mounted in the air channel, the first plate body is in contact with the inner wall of the outer ring, the second plate body is in contact with the outer wall of the inner ring, and the two elastic parts are used for opening the two plate bodies, so that the inner ring and the outer ring are supported, and meanwhile, the two elastic parts can guarantee normal flowing of air flow.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an air duct structure of a foil winding of a dry-type transformer. Background Art

[0002] Through retrieval, it is found that the prior art with the patent authorization announcement number: CN215731252U provides an air duct structure of a foil winding of a dry-type transformer. This patent optimizes the heat dissipation structure of the foil winding and improves the heat dissipation performance of the foil winding by designing first support strip parts and second support strip parts with different lengths and arranged alternately, thereby significantly reducing the temperature rise of the foil winding.

[0003] However, arranging the air duct with the above structure in the narrow air duct between the inner circle and the outer circle will, on the one hand, lead to an increase in production cost; on the other hand, the manufacturing difficulty is relatively high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an air duct structure of a foil winding of a dry-type transformer to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An air duct structure of a foil winding of a dry-type transformer includes an outer circle and an inner circle, and a support member is provided between the inner circle and the outer circle; the number of the support members is multiple, and an air duct is formed between any two adjacent support members; the support member includes a first elastic part and a second elastic part, and both sides of the first elastic part and the second elastic part are tightly abutted against the inner wall surface of the air duct.

[0006] As a preferred technical solution of the utility model: A first channel is provided inside the support member, and a second channel is further formed outside the first channel.

[0007] As a preferred technical solution of the utility model: The support member further includes a first plate body and a second plate body, and the first elastic part and the second elastic part are installed between the facing surfaces of the first plate body and the second plate body.

[0008] As a preferred technical solution of the utility model: The first elastic part and the second elastic part have the same structure, and the cross-section of the first elastic part is V-shaped.

[0009] As a preferred technical solution of the utility model: Both ends of the first elastic part are provided with connecting parts.

[0010] As a preferred technical solution of the utility model: The first plate body and the second plate body are made of heat-conducting silica gel sheets, and the first elastic part is a heat-dissipating elastic pressing sheet.

[0011] With the above technical solution, the beneficial effects of the present utility model are as follows: After the support member is installed inside the air passage, the two elastic parts are used to expand the two plate bodies. While supporting the inner ring and the outer ring, the two elastic parts can also ensure the normal flow of air. In particular, the elastic parts can be directly installed inside the air passage, so compared with the prior art, the installation is simpler and more convenient, and the processing cost is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. is a schematic structural diagram when the support member is installed between the inner ring and the outer ring;

[0013] Figure 2 FIG. is a schematic end face structure diagram of the support member of the present utility model;

[0014] Figure 3 FIG. is a schematic exploded structural diagram of the support member of the present utility model;

[0015] Figure 4 is Figure 3 a partial enlarged schematic diagram of part A in

[0016] Figure 5 FIG. is a schematic main body structure diagram of the first elastic part.

[0017] In the figure: 1, outer ring; 2, outer ring; 3, support member; 30, first plate body; 31, second plate body; 32, first elastic part; 33, second elastic part; 34, connecting part; 35, first channel; 36, second channel; 4, air passage. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0019] Please refer to Figures 1-5The utility model provides an embodiment: a foil winding air duct structure of a dry-type transformer, comprising an outer ring 1 and an inner ring 2, and a support member 3 is provided between the inner ring 1 and the outer ring 2; the number of the support members 3 is multiple, and an air duct 4 is formed between any two adjacent support members 3; the support member 3 comprises a first elastic part 32 and a second elastic part 33, and both sides of the first elastic part 32 and the second elastic part 33 are pressed against the inner wall surface of the air duct 4.

[0020] In summary, the arrangement of the support member 3 can maintain the shape of the airway 4 while promoting the formation of the airway 4, that is, when the inner ring 2 and the outer ring 1 are put together, the first elastic part 32 and the second elastic part 33 are squeezed. At this time, the first elastic part 32 and the second elastic part 33 have an elastic force extending outward, and use this elastic force to promote the constant gap between the inner ring 1 and the outer ring 2, thereby ensuring that the structure of the airway 4 is not affected.

[0021] At the same time, after the support member 3 is installed inside the airway 4, the two elastic parts are used to open the two plates, and the two elastic parts can also ensure the normal flow of the airflow while supporting the inner ring 1 and the outer ring 2. In particular, the elastic part can be directly installed inside the airway 4, so the installation is simpler and more convenient than the prior art, and the processing cost is also reduced.

[0022] In order to solve the problem in the prior art that the first support bar portion and the second support bar portion are designed to be of different lengths and staggered, when the airflow flows, part of the hot air source will flow from one support bar to two support bars due to the staggered arrangement of the support bars, thereby causing the airflow direction to be disordered, which is not conducive to the timely discharge of the heat source.

[0023] The support member 3 is provided with a first channel 35 inside, and a second channel 36 is formed outside the first channel 35. Based on this, since the support member 3 itself has two channels cooperating with the airway 4, the obstruction of the airflow by the support member 3 can be reduced, thereby further improving the flow speed of the airflow. At the same time, the two vertically arranged channels facilitate the smooth outflow of the airflow, effectively solving the problem of untimely heat discharge due to airflow turbulence.

[0024] On the basis of the above scheme, since the support member 3 also includes a first plate body 30 and a second plate body 31, and the first elastic part 32 and the second elastic part 33 are installed between the facing surfaces of the first plate body 30 and the second plate body 31, the two plates are used to contact the inner ring 1 and the outer ring 2, and the two plates are used to support the two elastic parts, so that the support member 3 can be reliably contacted with the inner ring 1 and the outer ring 2; secondly, it is convenient to support the elastic part.

[0025] Meanwhile, the structures of the first elastic part 32 and the second elastic part 33 are the same, and the cross-section of the first elastic part 32 is V-shaped, so that the contact area between the elastic part and the air flow can be increased, and further the heat exchange efficiency can be improved.

[0026] Specifically, the first plate body 30 and the second plate body 31 are made of heat-conducting silica gel sheets, and the first elastic part 32 is a heat-dissipating elastic pressing sheet. Therefore, the support member 3 can transfer the heat inside the inner ring 1 and the outer ring 2 to the elastic part, and then use the elastic part to perform heat exchange with the air flow, so that the support member 3 can effectively and reliably discharge the heat.

[0027] In addition, since connecting parts 34 are provided at both ends of the first elastic part 32, the contact area between the two elastic parts and the plate body can be enlarged through the connecting parts 34, and at the same time, it is also convenient to connect the elastic part and the plate body by using the connecting parts 34. For example, the elastic part can be bonded to the plate body with glue.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations of these embodiments still fall within the protection scope of the present invention.

Claims

1. A dry-type transformer foil winding airway structure, characterized in that: It comprises an outer ring (1) and an inner ring (2), and a support member (3) is provided between the outer ring (1) and the inner ring (2); The number of the support members (3) is plural, and an air passage (4) is formed between any two adjacent support members (3); The support member (3) comprises a first elastic portion (32) and a second elastic portion (33), and both sides of the first elastic portion (32) and the second elastic portion (33) are pressed against the inner wall surface of the airway (4).

2. The dry-type transformer foil winding airway structure according to claim 1, characterized in that: A first channel (35) is provided inside the support member (3), and a second channel (36) is formed outside the first channel (35).

3. A dry-type transformer foil winding airway structure according to claim 1 or 2, characterized in that: The support member (3) further comprises a first plate body (30) and a second plate body (31), and the first elastic portion (32) and the second elastic portion (33) are installed between facing surfaces of the first plate body (30) and the second plate body (31).

4. The dry-type transformer foil winding airway structure according to claim 3, characterized in that: The first elastic portion (32) and the second elastic portion (33) have the same structure, and the cross section of the first elastic portion (32) is V-shaped.

5. The dry-type transformer foil winding airway structure according to claim 4, characterized in that: Connecting portions (34) are provided at both ends of the first elastic portion (32).

6. The dry-type transformer foil winding airway structure according to claim 5, characterized in that: The first plate body (30) and the second plate body (31) are made of a heat-conducting silicone sheet, and the first elastic part (32) is a heat-dissipating elastic pressing sheet.

Images