Waterproof structure for butt joint port of new energy box transformer substation shell and transformer

Abstract

The invention discloses a new energy box transformer shell and transformer butt joint port waterproof structure which comprises a sealing plate assembly arranged on a box transformer shell and used for being in butt joint with a transformer butt joint port, the sealing plate assembly comprises a sealing plate, and the middle of the sealing plate is provided with a first opening for a high-voltage pile head of a transformer to penetrate through. The hole edge of the first open hole is directly welded through welding flux or connected with the fixing plate through a welding rod, and a second open hole for a high-voltage pile head of the transformer to penetrate through is formed in the middle of the fixing plate. According to the waterproof structure for the butt joint port of the new energy box transformer substation shell and the transformer, a physical waterproof structure is optimized, and the waterproof failure problem occurring after the sealing strip is aged can be effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproofing of box-type transformer equipment, and in particular to a waterproof structure for a docking interface between a new energy box-type transformer housing and a transformer. Background Art

[0002] As an important equipment in the new energy power generation system, the new energy box transformer (box-type substation) often adopts an external structure for the heat sink of the large-capacity new energy box transformer. The interface between the transformer body and the box transformer shell needs to be waterproof. Its waterproof performance is directly related to the operational safety and service life of the equipment.

[0003] Conventional waterproof structures currently use a combination of a single waterproof hem and a sealing strip for protection. However, due to the harsh environment in which new energy transformers operate, the sealing strip is prone to aging, hardening, or cracking, leading to a decrease in sealing performance. If the sealing strip fails, relying solely on a single waterproof hem for protection will significantly reduce waterproof performance and may even cause water seepage.

[0004] In view of this, how to design a waterproof structure for the interface between the new energy box transformer housing and the transformer that can solve the above technical problems is a topic that the inventors have devoted themselves to studying. Summary of the Invention

[0005] The purpose of the present invention is to provide a waterproof structure for the interface between a new energy box transformer housing and a transformer, which optimizes the physical waterproof structure and can effectively prevent the waterproof failure problem caused by aging of the sealing strip.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a waterproof structure of the interface between the new energy box transformer shell and the transformer, which includes a sealing plate assembly arranged on the box transformer shell and used to dock with the transformer interface, the sealing plate assembly includes a sealing plate, and a first opening for the high-voltage pile head of the transformer to pass through is provided in the middle of the sealing plate, the edge of the first opening is directly welded with solder or connected to the fixed plate by a welding rod, and a second opening for the high-voltage pile head of the transformer to pass through is provided in the middle of the fixed plate.

[0007] The present invention provides a waterproof structure for the interface between a new energy box transformer shell and a transformer, wherein the cross-section of the welding rod is Z-shaped, one end of the welding rod is welded and fixed to the sealing plate, the welding rod completely wraps a circle of the first opening, and the other end of the welding rod is connected to the fixing plate through a detachable connector.

[0008] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein the detachable connector is a threaded connector.

[0009] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a first waterproof folding edge is provided around the outer edge of the sealing plate, and a sealing structural adhesive is provided on the outer surface of the first waterproof folding edge.

[0010] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a rainproof eave is provided on the box transformer housing above the welding portion of the sealing plate assembly.

[0011] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a sealing structural adhesive is provided at the connection between the rainproof eaves and the box transformer housing.

[0012] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a second waterproof folded edge is provided around the outer edge of the fixing plate.

[0013] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a gasket is provided between the fixing plate and the high-pressure flange of the transformer body, and the fixing plate, the gasket and the high-pressure flange of the transformer body are assembled through a detachable connecting piece and a nut.

[0014] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein a sealing strip is installed between the surfaces where the fixing plate and the high-pressure flange of the transformer body are in contact.

[0015] The present invention provides a waterproof structure for the interface between a new energy box transformer housing and a transformer, wherein structural adhesive is respectively provided on the fixing plate at the joint between the second opening and the high-voltage flange of the transformer body and at the connection between the welding rod and the fixing plate.

[0016] After adopting the above scheme, the waterproof structure of the interface between the new energy transformer shell and the transformer of the present invention is connected to the transformer through the first opening of the sealing plate, and a first waterproof fold is provided on the outer edge of the sealing plate, which can effectively prevent rain leakage at the joint between the sealing plate and the transformer. By providing a sealing structural adhesive on the outer surface of the first waterproof fold, double rain protection can be achieved. At the first opening, by direct welding or connection with a welding rod, the solder or welding rod completely wraps the docking interface to form a first waterproof structure as a whole; by providing a rainproof eaves above the welding part on the sealing plate assembly, and providing a sealing structural adhesive at the connection between the rainproof eaves and the transformer shell, rainwater can be effectively diverted to flow out from both sides of the rainproof eaves to form a second waterproof structure; by installing a sealing strip on the rear surface of the fixed plate, and providing a structural adhesive at the second opening of the fixed plate and the docking point of the high-pressure flange of the transformer body, the sealing strip and the structural adhesive form a third layer of protection. These three waterproof structures can effectively solve the problem of waterproofing the interface between the transformer shell and the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a structural diagram of an embodiment of a waterproof structure for the interface between a new energy box transformer housing and a transformer according to the present invention;

[0018] Figure 2 yes Figure 1 AA-direction cross-sectional structural diagram;

[0019] Figure 3 1 is a schematic structural diagram of an embodiment of a sealing plate assembly of the present invention;

[0020] Figure 3A yes Figure 3 A schematic structural diagram of a sealing plate embodiment;

[0021] Figure 4 yes Figure 3 BB-direction cross-sectional structural diagram;

[0022] Figure 5 yes Figure 3 CC-direction cross-sectional structural diagram;

[0023] Figure 6A is a schematic diagram of the cross-sectional structure of a first welding rod according to an embodiment of the present invention;

[0024] Figure 6B is a schematic diagram of the cross-sectional structure of a second welding rod according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic structural diagram of an embodiment of the waterproof structure of the present invention installed on a transformer;

[0026] Figure 8 This is a schematic diagram of the structure of an embodiment of the present invention installed between a box-type transformer and a transformer;

[0027] Figure 9 This is a schematic diagram of the structure of the fixing plate and the transformer body high-voltage flange connected by nailing. The present invention is further described below with reference to the accompanying drawings and examples.

[0028] Number Description:

[0029] 1- Transformer 2- Sealing plate assembly

[0030] 3-Rainproof eaves 4-Sealing strip

[0031] 5- Transformer- High voltage chamber sealing plate 6- First opening

[0032] 7-Fixed plate 8-Second opening

[0033] 9-first welding rod 10-second welding rod

[0034] 11-first through hole 12-second through hole

[0035] 13- Transformer body 14- Gasket

[0036] 15-first waterproof folding edge 16-second waterproof folding edge

[0037] 17-Box transformer housing 18-Transformer body high-voltage flange DETAILED DESCRIPTION

[0038] like Figure 1 The main structural diagram of the embodiment of the waterproof structure of the interface between the new energy box transformer housing and the transformer of the present invention is shown. Figure 7 and Figure 8 As shown, the waterproof structure includes a sealing plate assembly 2, a rainproof eave 3 and a sealing strip 4 provided on the transformer housing 17 for docking with the docking port of the transformer 1. The transformer 1 includes a transformer body 13, on which a transformer body high-voltage flange 18 is provided.

[0039] refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the sealing plate assembly 2 includes a transformer-high voltage chamber sealing plate 5 provided on the box-type transformer housing 17, combined with Figure 3A As shown, the transformer-high-voltage chamber sealing plate 5 of this example adopts a rectangular plate, and a first opening 6 for the high-voltage pile head of the transformer to pass through is provided in the middle of the transformer-high-voltage chamber sealing plate 5. In this embodiment, the first opening 6 adopts a rectangular hole, so that the transformer-high-voltage chamber sealing plate 5 forms a rectangular ring plate. The edge of the first opening 6 is connected to the first welding rod 9 and the second welding rod 10 by welding. The fixed plate 7 of this example adopts a rectangular plate that matches the shape of the first opening 6. A second opening 8 for the high-voltage pile head of the transformer to pass through is provided in the middle of the fixed plate 7. In this embodiment, the second opening 8 adopts a rectangular hole, so that the fixed plate 7 forms a rectangular ring plate. The fixed plate 7 is directly fixed to the first welding rod 9 and the second welding rod 10 by a threaded connection method, and the connection is treated with structural adhesive to achieve the purpose of completely wrapping the docking interface.

[0040] refer to Figure 6A 、 Figure 6BAs shown, the welding method of this embodiment adopts two first welding rods 9 and two second welding rods 10. The cross-sections of the first welding rod 9 and the second welding rod 10 are both Z-shaped, wherein the two first welding rods 9 are adapted to the upper and lower ends of the first opening 6, and one end of the two first welding rods 9 is welded and fixed to the upper and lower ends of the first opening 6, and the two second welding rods 10 are adapted to the left and right sides of the first opening 6, and one end of the two second welding rods 10 is welded and fixed to the left and right sides of the first opening 6. The two first welding rods 9 and the two second welding rods 10 completely wrap a circle of the first opening 6, and the other ends of the two first welding rods 9 are connected and fixed to the upper and lower parts of the fixing plate 7 through a detachable connector, and the other ends of the two second welding rods 10 are connected and fixed to the left and right parts of the fixing plate 7 through a detachable connector. The detachable connector of this embodiment adopts a threaded connector, preferably a plurality of nails. A circle of the fixing plate 7 near the outer edge is provided with a plurality of first through holes 11 for driving nails through, and a circle of the fixing plate 7 near the second opening 8 is provided with a plurality of second through holes 12 for driving nails through. The other ends of the two first welding rods 9 and the two second welding rods 10 are connected and fixed to the fixing plate 7 by a plurality of driving nails passing through the plurality of first through holes 11. Figure 9 As shown, the fixing plate 7 and the transformer body high-voltage flange 18 of the transformer body 13 are connected and fixed together by multiple nails passing through multiple second through holes 12. Preferably, multiple gaskets 14 are provided between the fixing plate 7 and the transformer body high-voltage flange 18. The fixing plate 7, the multiple gaskets 14, and the transformer body high-voltage flange 18 are assembled using multiple nails and nuts. A sealing strip 4 is installed on the surface of the fixing plate 7 that contacts the transformer body high-voltage flange 18, that is, a sealing strip 4 is provided between the fixing plate 7 and the transformer body high-voltage flange 18.

[0041] L-shaped first waterproof hems 15 are provided at the upper, lower, left, and right ends of the outer edge of the transformer-high-voltage chamber sealing plate 5. These hems 15 are perpendicular to the transformer-high-voltage chamber sealing plate 5. Sealing structural adhesive is applied to the outer surface of each first waterproof hem 15. Second waterproof hems 16 are provided at the upper, lower, left, and right ends of the outer edge of the fixing plate 7. The fixing plate 7 is removably connected to the first and second welding rods 9 and 10 via a plurality of spikes.

[0042] Structural adhesive is provided on the fixing plate 7 at the joint between the second opening 8 and the high-voltage flange 18 of the transformer body, and at the connection between the fixing plate 7 and the first welding rod 9 and the second welding rod 10.

[0043] A rainproof eave 3 is provided on the welding part of the sealing plate assembly 2 on the box-type transformer housing 17. The cross section of the rainproof eave 3 is a C-shaped structure with the opening facing downward. A sealing structural adhesive is provided at the connection between the rainproof eave 3 and the box-type transformer housing 17.

[0044] The waterproof structure of the interface between the new energy box transformer housing and the transformer of the present invention connects the first opening 6 of the transformer-high-voltage chamber sealing plate 5 with the transformer 1, and arranges a first waterproof folding edge 15 around the upper, lower, left and right ends of the outer edge of the transformer-high-voltage chamber sealing plate 5, which can effectively prevent rain leakage at the joint between the transformer-high-voltage chamber sealing plate 5 and the transformer 1. By arranging a sealing structural adhesive on the outer surface of the first waterproof folding edge 15, double rain protection can be achieved. At the first opening 6, the interface of the transformer 1 is completely enclosed by welding, either directly with solder or by welding, for example, the first and second welding rods 9 and 10 to the fixing plate 7, thereby forming a first waterproof structure. A rainproof eave 3 is provided on the transformer housing 17 above the welded portion of the sealing plate assembly 2, and a sealing structural adhesive is provided at the connection between the rainproof eave 3 and the transformer housing 17. This effectively diverts rainwater from both sides of the rainproof eave 3, forming a second waterproof structure. A sealing strip 4 is installed on the surface of the fixing plate 7 that abuts the high-pressure flange 18 of the transformer body, and a structural adhesive is provided at the connection between the second opening 8 of the fixing plate 7 and the high-pressure flange 18 of the transformer body. The sealing strip 4 and the structural adhesive form a third layer of protection. These three waterproof structures effectively address the waterproofing issue at the interface between the transformer housing 17 and the transformer. This optimizes the physical waterproof structure and provides triple waterproof protection. Even if the sealing strip ages, the remaining two waterproof structures can still ensure the waterproof performance of the transformer.

[0045] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary engineers and technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A waterproof structure for the interface between a new energy box transformer housing and a transformer, characterized in that: It includes a sealing plate assembly arranged on the box transformer shell and used to dock with the transformer docking interface. The sealing plate assembly includes a sealing plate. A first opening is provided in the middle of the sealing plate for the high-voltage pile head of the transformer to pass through. The edge of the first opening is directly welded with solder or connected to the fixed plate by a welding rod. A second opening is provided in the middle of the fixed plate for the high-voltage pile head of the transformer to pass through.

2. The waterproof structure of the interface between the new energy box transformer housing and the transformer according to claim 1 is characterized in that: The cross section of the welding rod is Z-shaped, one end of the welding rod is welded and fixed to the sealing plate, the welding rod completely wraps a circle of the first opening, and the other end of the welding rod is connected to the fixing plate through a detachable connector.

3. A waterproof structure for the interface between a new energy box transformer housing and a transformer as claimed in claim 1 or 2, characterized in that: The detachable connecting piece is a threaded connecting piece.

4. The waterproof structure of the interface between the new energy box transformer housing and the transformer according to claim 1 is characterized in that: A first waterproof folding edge is provided around the outer edge of the sealing plate, and a sealing structural adhesive is provided on the outer surface of the first waterproof folding edge.

5. The waterproof structure of the interface between the new energy box transformer housing and the transformer according to claim 1 is characterized in that: A rainproof eave is provided on the box-type transformer housing above the welding position of the sealing plate assembly.

6. The waterproof structure of the interface between the new energy box transformer housing and the transformer according to claim 5, characterized in that: A sealing structural adhesive is provided at the connection between the rainproof eaves and the box-type transformer shell.

7. The waterproof structure of the interface between the new energy box transformer housing and the transformer according to claim 1 is characterized in that: A second waterproof folding edge is provided around the outer edge of the fixing plate.

8. The waterproof structure for the interface between the new energy box transformer housing and the transformer according to claim 7, characterized in that: A gasket is provided between the fixing plate and the high-voltage flange of the transformer body. The fixing plate, the gasket and the high-voltage flange of the transformer body are assembled through a detachable connector and a nut.

9. The waterproof structure for the interface between the new energy box transformer housing and the transformer according to claim 8, characterized in that: A sealing strip is installed between the surface where the fixing plate and the high-voltage flange of the transformer body are in contact.

10. The waterproof structure for the interface between the new energy box transformer housing and the transformer according to claim 8, characterized in that: Structural adhesive is respectively provided on the fixing plate at the joint between the second opening and the high-voltage flange of the transformer body and at the connection between the welding rod and the fixing plate.

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