An integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly.

Abstract

This utility model discloses an integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly. The structure includes a transformer body and a channel steel at the bottom of the transformer body. It comprises an on-load tap changer support assembly, an instrumentation control cabinet assembly, and a connecting rod assembly. The on-load tap changer support assembly is mounted on the bottom channel steel of the transformer body and is connected to the top of the transformer body via the connecting rod assembly to form a stable whole. The instrumentation control cabinet assembly is then fixed to the on-load tap changer support assembly. This solution integrates the transformer body, on-load tap changer support, and instrumentation control cabinet of a large-capacity on-load dry-type transformer into a single assembly structure. All assembly and wiring are completed in-house. After the product arrives on-site, only the transformer needs to be positioned and secured, thus shortening installation time and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to an integrated assembly structure for a large-capacity on-load tap-changing dry-type transformer that requires no on-site assembly. Background Technology

[0002] Large-capacity on-load tap-changing dry-type transformers (referred to as "on-load dry-type transformers") are increasingly becoming the preferred equipment for high-safety locations such as high-rise buildings, subways, airports, and data centers due to their advantages such as fire resistance, flame retardancy, environmental friendliness, and ease of maintenance.

[0003] Traditionally, large-capacity on-load dry-type transformers are installed separately from the transformer body and the on-load tap changer (including the bracket). After the product is delivered to the site, it is necessary to position and fix the transformer body, fix the on-load tap changer bracket, connect the cables between the transformer high-voltage coil tap terminals and the on-load tap changer terminals, and perform secondary wiring for instruments and meters. These tasks usually require the manufacturer to send a specialist to the site to complete them. If it is an export project, this is also a considerable expense.

[0004] Therefore, the existing traditional large-capacity on-load tap-changing dry-type transformers are expensive and inefficient due to their complex installation structure. It is evident that simplifying the installation structure of large-capacity on-load tap-changing dry-type transformers is a problem that needs to be solved in this field. Utility Model Content

[0005] To address the technical problem of complex installation structures in existing large-capacity on-load tap-changing dry-type transformers, the purpose of this utility model is to provide an integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly. After the product is delivered to the site, the transformer only needs to be positioned and fixed, eliminating the need for a specialist to assemble and wire the transformer on-site. This simplifies the assembly structure, shortens the product installation time, and reduces costs.

[0006] To achieve the above objectives, this utility model provides an integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly. The structure includes a transformer body and a channel steel at the bottom of the transformer body. It comprises an on-load tap changer support assembly, an instrumentation control cabinet assembly, and a connecting rod assembly. The on-load tap changer support assembly is mounted on the bottom channel steel of the transformer body. The on-load tap changer support assembly is connected to the top of the transformer body via the connecting rod assembly to form a stable whole. The instrumentation control cabinet assembly is fixed to the on-load tap changer support assembly. The transformer body, on-load tap changer and support assembly, and instrumentation control cabinet assembly are assembled to form an integrated structure.

[0007] Furthermore, the bottom channel steel on the low-voltage side of the transformer body is provided with an extended structure.

[0008] Furthermore, the bottom of the transformer body base channel steel is provided with several first fixing holes for fixing to the on-site installation site, and the top of the channel steel is provided with several second fixing holes for fixing to the on-load tap changer bracket assembly.

[0009] Furthermore, the on-load tap changer bracket assembly is a frame body composed of several rods connected together, and the top of the frame body is symmetrically provided with several sets of connecting parts for installing the on-load tap changer.

[0010] Furthermore, the linkage assembly includes a plurality of first supports and a plurality of connecting rods. The plurality of first supports are disposed on the upper part of the transformer body. One end of the connecting rod is connected to the on-load tap changer support assembly, and the other end is connected to the first support.

[0011] Furthermore, the upper surface of the first bracket is on the same plane as the top surface of the on-load tap changer bracket assembly.

[0012] Furthermore, the instrument control cabinet assembly includes an instrument control cabinet and a second bracket, the second bracket being mounted on and connected to the on-load tap changer bracket assembly, and the instrument control cabinet being mounted on the second bracket.

[0013] This utility model provides an integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly. By designing the transformer body, on-load tap changer bracket, and instrument control cabinet of a large-capacity on-load dry-type transformer into an integrated assembly structure, the entire product is assembled and wired in-house. After the product is delivered to the site, only the transformer needs to be positioned and fixed. There is no need to send a specialist to the site for assembly and wiring, which shortens the product installation time and reduces costs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the integrated assembly structure of the on-load tap-changing dry-type transformer. Figure 2 This is a schematic diagram showing the arrangement of the high-voltage coil start and end terminals and tap terminals in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 3 This is a top view of the channel steel structure in the integrated assembly structure of this on-load tap-changing dry-type transformer; Figure 4 This is a bottom view of the channel steel structure in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 5 This is a schematic diagram of the assembly structure of the on-load tap changer bracket assembly in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 6 This is a front view of the on-load tap changer support assembly in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 7 This is a structural side view of the on-load tap changer support assembly in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 8 This is a top view of the on-load tap changer support assembly in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 9 This is a top view of the connecting rod assembly in the integrated assembly structure of this on-load tap-changing dry-type transformer. Figure 10 This is a schematic diagram of the instrumentation control cabinet component in the integrated assembly structure of this on-load tap-changing dry-type transformer.

[0016] The following are the component labels in the attached diagram: 1. Transformer body high-voltage coil; 2. Channel steel; 21. First fixing hole; 22. Second fixing hole; 3. On-load tap changer bracket assembly; 31. First connecting hole; 32. Second connecting hole; 4. On-load tap changer; 5. Linkage assembly; 51. Linkage; 52. First bracket; 6. Instrument and meter control cabinet assembly; 61. Instrument and meter control cabinet; 62. Mounting hole; 63. Second bracket; 7. Cable. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0018] Existing large-capacity on-load tap-changing dry-type transformers have the technical problem of complex installation structure. In order to address this technical problem, this utility model provides an integrated assembly structure for on-load tap-changing dry-type transformers that does not require on-site assembly. The entire product can be assembled and wired in-house. After the product is delivered to the site, the transformer only needs to be positioned and fixed. There is no need to send a specialist to the site for assembly and wiring, which shortens the product installation time and reduces costs.

[0019] This utility model provides an integrated assembly structure for on-load tap-changing dry-type transformers that requires no on-site assembly. (See also...) Figure 1It includes an on-load tap changer bracket assembly 3, an instrumentation control cabinet assembly 6, and a connecting rod assembly 5. The on-load tap changer bracket assembly 3 is installed on the bottom channel steel 2 of the transformer body, and then connected to the top of the transformer body through the connecting rod assembly 5. At the same time, the instrumentation control cabinet assembly 6 is fixed to the on-load tap changer bracket assembly 3. In this way, the transformer body, on-load switch and bracket, and instrumentation control cabinet are assembled into a whole, eliminating the need to send a specialist to the site for installation and wiring, which shortens the product installation time and reduces costs.

[0020] Specifically, first, see Figure 2 The first and last terminals of the high-voltage coil 1 of the transformer body and the tap terminals are preferably located on both sides of the transformer. This is because, considering that large-capacity three-phase high-voltage coils are mostly delta-connected and require the installation of delta copper tubes, it is preferable to place the tap terminals on the low-voltage side of the transformer in order to make the switch bracket as close as possible to the transformer body while meeting the electrical distance requirements.

[0021] Secondly, see Figures 3-4 The base channel steel 2 on the low-voltage side of the transformer body is extended outward to lengthen it so that the on-load tap changer bracket assembly 3 can be installed.

[0022] The bottom of the transformer body base channel steel 2 is provided with several first fixing holes 21 for fixing the transformer body to the on-site installation site, and the top of the channel steel 2 is provided with several second fixing holes 22 for fixing and connecting to the on-load tap changer bracket assembly 3.

[0023] See Figures 5-8 The on-load tap changer bracket assembly 3 is a frame body composed of several rods connected together. Several sets of connectors are symmetrically arranged on the top of the frame body. The several sets of connectors are connected to the rods of the frame body respectively. The connectors are used to connect with the on-load tap changer 4 to complete the distribution and connection of the on-load tap changer 4.

[0024] The bottom of the on-load tap changer bracket assembly 3 is provided with a first connecting hole 31 for connecting with the second fixing hole 22 of the channel steel 2. The upper part of the on-load tap changer bracket assembly 2 is provided with a second connecting hole 32 for installing the connecting rod assembly 5. (See figure) Figure 9 The linkage assembly 5 includes several first supports 52 and several connecting rods 51. The several first supports 52 are disposed on the upper part of the transformer body, and the upper surface of the several first supports 52 is on the same plane as the top surface of the on-load tap changer support assembly 3.

[0025] Connecting rods 51 are installed at both ends of the top of the on-load tap changer bracket assembly 3. One end of the connecting rod 51 is connected to the second connecting hole 32 of the on-load tap changer bracket assembly 3, and the other end is connected to the first bracket 52 on the upper part of the transformer body. This ensures that the switch bracket and the transformer body become a stable whole after installation. Thus, the on-load tap changer and the transformer body can form an integrated structure.

[0026] See Figure 1 and Figure 10 The instrument control cabinet assembly 6 includes an instrument control cabinet 61 and a second bracket 63. The second bracket is disposed on the side of the on-load tap changer bracket assembly 3 and connected to the on-load tap changer bracket assembly 3. The instrument control cabinet 6 is disposed on the second bracket 63 and connected to the second bracket 63 through the mounting hole 62, thereby connecting the instrument control cabinet 61 and the on-load tap changer bracket assembly 3 to form an integrated structure.

[0027] In this way, the transformer body, on-load tap changer and support, and instrument control cabinet are integrated into one unit. Finally, the cable 13 connection between the on-load tap changer and the high-voltage coil of the transformer body and the secondary wiring of the instruments are completed.

[0028] The above-described integrated assembly structure for on-load tap-changing dry-type transformers, which eliminates the need for on-site assembly, integrates the transformer body, on-load tap changer bracket, and instrument control cabinet into a single assembly structure. The entire product is assembled and wired within the company. Once the product arrives on-site, the transformer only needs to be positioned and secured, eliminating the need for on-site assembly and wiring by designated personnel. This shortens installation time and reduces costs.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A field-assembled, on-load tap-changing dry-type transformer integrated assembly structure, comprising a transformer body and channel steel disposed at the bottom of the transformer body, characterized in that, It includes an on-load tap changer bracket assembly, an instrumentation control cabinet assembly, and a connecting rod assembly. The on-load tap changer bracket assembly is installed on the bottom channel steel of the transformer body. The on-load tap changer bracket assembly is connected to the top of the transformer body through the connecting rod assembly to form a stable whole. The instrumentation control cabinet assembly is fixed on the on-load tap changer bracket assembly. The transformer body, on-load tap changer and bracket assembly, and instrumentation control cabinet assembly are assembled to form an integral structure.

2. The integrated assembly structure of an on-load tap-changing dry-type transformer that requires no on-site assembly according to claim 1, characterized in that, The bottom channel steel on the low-voltage side of the transformer body is provided with an extended structure.

3. An on-site, assembly-free, dry-type, load-regulated transformer integrated assembly structure according to claim 1, characterized in that, The bottom of the transformer body base channel steel is provided with several first fixing holes for fixing to the on-site installation site, and the top of the channel steel is provided with several second fixing holes for fixing to the on-load tap changer bracket assembly.

4. A field assembled load tap-off dry-type transformer integrated assembly structure as claimed in claim 1, wherein, The on-load tap changer bracket assembly is a frame body composed of several rods connected together, and the top of the frame body is symmetrically provided with several sets of connecting parts for installing the on-load tap changer.

5. A field assembled load tap-off dry-type transformer integrated assembly structure as claimed in claim 1, wherein, The linkage assembly includes a plurality of first supports and a plurality of connecting rods. The plurality of first supports are disposed on the upper part of the transformer body. One end of the connecting rod is connected to the on-load tap changer support assembly, and the other end is connected to the first support.

6. An on-site, assembly-free, dry-type, load-regulated transformer integrated assembly structure according to claim 5, characterized in that, The upper surface of the first bracket is on the same plane as the top surface of the on-load tap changer bracket assembly.

7. The integrated assembly structure of an on-load tap-changing dry-type transformer that requires no on-site assembly according to claim 1, characterized in that, The instrument control cabinet assembly includes an instrument control cabinet and a second bracket. The second bracket is mounted on and connected to the on-load tap changer bracket assembly, and the instrument control cabinet is mounted on the second bracket.

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