Dry-type transformer with coil collapse prevention function

Abstract

The utility model provides a dry -type transformer with prevent coil collapse function, including high -voltage winding mould and coil, is provided with the anti -collapse structure along the axial direction of high -voltage winding mould interval, and the anti -collapse structure is composed of grid board cushion block and glass silk belt, and the grid board cushion block annular array distribution is on the outer surface of high -voltage winding mould, and the glass silk belt is wound on the grid board cushion block, and the anti -collapse structure corresponding glass silk belt winding corresponding grid board cushion block at least one circle is obliquely pulled to adjacent anti -collapse structure, coil is provided with multiple sections, and each section coil is wound on the outer surface of high -voltage winding mould between the anti -collapse structure. The utility model discloses in the actual application process, even if dry -type transformer is disturbed by the vibration, because the inner ring of coil is close to high -voltage winding mould and will be blocked by the grid board cushion block, so that the spacing between each section coil can keep invariant, satisfies the safety spacing requirement between the coil, can effectively prevent coil collapse, ensures the coil height stability.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, specifically a dry-type transformer with a function to prevent coil collapse. Background Technology

[0002] Dry-type transformers are transformers whose core and windings are not immersed in insulating oil. They are widely used in local lighting, high-rise buildings, airports, dock machinery and equipment and other places. With the development of the world economy, dry-type transformers have achieved rapid development worldwide, especially in distribution transformers, where they account for an increasingly larger proportion.

[0003] Currently, in the manufacturing process of traditional dry-type transformers, after the coils are installed on the mold, a certain safety distance is maintained between adjacent coils, resulting in a gap between them. During the operation of the dry-type transformer, under the action of vibration and the weight of the coils themselves, the coils are prone to movement due to this gap, causing changes in the coil impedance and the safety distance between the coils to fail to meet the withstand voltage requirements. Utility Model Content

[0004] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a dry-type transformer with the function of preventing coil collapse.

[0005] This utility model provides a dry-type transformer with a coil collapse prevention function, including a high-voltage winding mold and a coil. Anti-collapse structures are arranged at intervals along the axial direction of the high-voltage winding mold. The anti-collapse structures are composed of grid plate pads and glass ribbons. The grid plate pads are arranged in a ring array on the outer surface of the high-voltage winding mold. The glass ribbons are wound on the grid plate pads, and the glass ribbons corresponding to the anti-collapse structures are wound around the corresponding grid plate pads at least once and then diagonally pulled to the adjacent anti-collapse structures. The tail of the glass ribbon passes through the already wound glass ribbon. The coil is provided with multiple segments, and each segment of the coil is wound on the outer surface of the high-voltage winding mold between the anti-collapse structures.

[0006] A further option is that the cross-section of the high-voltage winding mold can be circular or elliptical.

[0007] A further option is that when the cross-section of the high-voltage winding mold is circular, the number of grid plate pads corresponding to the anti-collapse structure is set to four; when the cross-section of the high-voltage winding mold is elliptical, the number of grid plate pads corresponding to the anti-collapse structure is set to six.

[0008] A further option is that the grid plate pad is made by cutting a grid plate, the width of the grid plate pad is consistent with the spacing between each coil segment, and the height of the grid plate pad is 2mm lower than the coil height.

[0009] A further embodiment is that the leads of adjacent coil segments are connected by a connector, which is configured as a copper busbar or a connector assembly; the connector assembly includes a crimping terminal with a crimping channel inside, and the leads of adjacent coil segments are crimped into the crimping channel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a dry-type transformer with a function of preventing coil collapse. Anti-collapse structures are spaced along the axial direction of the high-voltage winding mold. These anti-collapse structures consist of mesh plate pads and fiberglass tape. The width of the mesh plate pads is consistent with the spacing between coil segments. In practical applications, the coil winding can be based on the anti-collapse structures, thereby improving winding efficiency and quality. Furthermore, even if the dry-type transformer is subjected to vibration, the mesh plate pads will block the inner coils near the high-voltage winding mold, ensuring that the spacing between coil segments remains constant. This satisfies the safety spacing requirements between coils, meets withstand voltage standards, effectively prevents coil collapse, and ensures stable coil height. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A front view of the high-voltage winding mold with glass ribbon wound around it, provided in an embodiment of this utility model; Figure 2 A cross-sectional structural schematic diagram of a high-voltage winding mold with glass ribbon wound around it, provided in an embodiment of this utility model; Figure 3 This is a front view of the high-voltage winding mold with glass ribbon and coil provided in an embodiment of the present invention.

[0013] Reference numerals: 1. High-voltage winding mold; 2. Mesh plate pad; 3. Fiberglass ribbon; 4. Coil. Detailed Implementation

[0014] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0017] Please see Figures 1-3 This utility model provides a dry-type transformer with a coil collapse prevention function, including a high-voltage winding mold 1 and a coil 4. Anti-collapse structures are spaced along the axial direction of the high-voltage winding mold 1. Each anti-collapse structure consists of a grid plate pad 2 and a glass ribbon 3. The grid plate pads 2 are arranged in a circular array on the outer surface of the high-voltage winding mold 1. The glass ribbon 3 is wound around the grid plate pads 2, and the glass ribbon 3 corresponding to each anti-collapse structure is wound around the corresponding grid plate pad 2 at least once before being diagonally pulled to the adjacent anti-collapse structure. The tail of the glass ribbon 3 passes through the already wound glass ribbon 3. During the winding process, appropriate tension is maintained to ensure that the glass ribbon 3 tightly adheres to the surface of the grid plate pad 2, thereby pressing the grid plate pad 2 firmly onto the outer surface of the high-voltage winding mold 1. The coil 4 has multiple segments, each segment of the coil 4 wound around the outer surface of the high-voltage winding mold 1 between the anti-collapse structures. Since coil 4 is formed by winding high-voltage conductors one loop at a time onto the high-voltage winding mold 1, the high-voltage conductors on the inner loop of coil 4 will come into contact with the anti-collapse structure. Therefore, in practical applications, even if the dry-type transformer is subjected to vibration interference, the spacing between each section of coil 4 will not change because the inner loop of coil 4 near the high-voltage winding mold 1 will be blocked by the grid plate pad 2. This ensures that the spacing between coil 4 meets the safety distance requirements and also prevents coil 4 from collapsing, thus ensuring the height of coil 4. Furthermore, during the winding process of coil 4, the winding of coil 4 is based on the anti-collapse structure, which helps to improve winding efficiency and winding quality.

[0018] Optionally, the cross-section of the high-voltage winding mold 1 can be circular or elliptical. When the cross-section of the high-voltage winding mold 1 is circular, the number of grid plate pads 2 corresponding to the anti-collapse structure is set to four; when the cross-section of the high-voltage winding mold 1 is elliptical, the number of grid plate pads 2 corresponding to the anti-collapse structure is set to six.

[0019] It should be noted that the grid plate pad 2 is made by cutting a grid plate. The width of the grid plate pad 2 is consistent with the spacing between each section of the coil 4, so that the spacing between the coils 4 meets the safety distance and the safety distance between the coils 4 meets the pressure resistance requirements. The height of the grid plate pad 2 is 2mm lower than the height of the coil 4.

[0020] It should be further explained that, since the coil 4 is wound in segments, each segment of the coil 4 exists independently, and the leads of adjacent segments of the coil 4 need to be connected by a connector. The connector can be a copper busbar that connects the leads of adjacent segments of the coil 4 together. The connector can also be a joint assembly. The joint assembly includes a crimping terminal with a crimping channel inside, and the leads of adjacent segments of the coil 4 are crimped into the crimping channel.

[0021] The working principle of this utility model is as follows: In practical use, by winding glass ribbon 3, the grid plate pad 2 is pressed tightly onto the outer surface of the high-voltage winding mold 1, thereby arranging an anti-collapse structure on the high-voltage winding mold 1. During the winding process of glass ribbon 3, appropriate tension must be maintained so that glass ribbon 3 is tightly attached to the surface of the grid plate pad 2, thereby pressing the grid plate pad 2 tightly onto the outer surface of the high-voltage winding mold 1. After arranging the anti-collapse structure on the high-voltage winding mold 1, the winding coil 4 can be based on the anti-collapse structure. High-voltage wires are wound on the high-voltage winding mold 1 to form the coil 4. The coil 4 is wound in segments, and each segment of the coil 4 exists independently. The leads of adjacent segments of the coil 4 need to be connected by connectors. Therefore, by arranging the anti-collapse structure on the high-voltage winding mold 1 in advance, this utility model can prevent the coil 4 from collapsing and improve the winding quality and efficiency of the coil 4.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0024] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A dry-type transformer with a function to prevent coil collapse, characterized in that: The high-voltage winding mold (1) and coil (4) are included. Anti-collapse wire structures are arranged at intervals along the axial direction of the high-voltage winding mold (1). The anti-collapse wire structures are composed of grid plate pads (2) and glass ribbons (3). The grid plate pads (2) are arranged in a ring array on the outer surface of the high-voltage winding mold (1). The glass ribbons (3) are wound on the grid plate pads (2). The glass ribbons (3) corresponding to the anti-collapse wire structures are wound around the corresponding grid plate pads (2) at least once and then pulled obliquely to the adjacent anti-collapse wire structures. The tail of the glass ribbons (3) passes through the already wound glass ribbons (3). The coil (4) is provided with multiple segments. Each segment of the coil (4) is wound on the outer surface of the high-voltage winding mold (1) between the anti-collapse wire structures.

2. A dry-type transformer with anti-coil collapse function according to claim 1, characterized in that: The cross-section of the high-voltage winding mold (1) can be circular or elliptical.

3. A dry-type transformer with anti-coil collapse function according to claim 2, characterized in that: When the cross-section of the high-voltage winding mold (1) is circular, the number of grid plate pads (2) corresponding to the anti-collapse wire structure is set to four; when the cross-section of the high-voltage winding mold (1) is elliptical, the number of grid plate pads (2) corresponding to the anti-collapse wire structure is set to six.

4. A dry-type transformer with anti-coil collapse function according to claim 1, characterized in that: The grid plate pad (2) is made by cutting a grid plate. The width of the grid plate pad (2) is consistent with the spacing between each section of coil (4). The height of the grid plate pad (2) is 2mm lower than the height of the coil (4).

5. A dry-type transformer with anti-coil collapse function according to claim 1, characterized in that: The leads of adjacent sections of the coil (4) are connected by a connector, which is a copper busbar or a connector assembly; the connector assembly includes a crimping terminal, which has a crimping channel, and the leads of adjacent sections of the coil (4) are crimped in the crimping channel.

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