A water-cooled tube detachable pulse transformer

Abstract

This utility model discloses a water-cooled tube detachable pulse transformer, including a box body, a box cover on the top of the box body, a transformer body inside the box body, a connecting structure between the transformer body and the box cover, and a water-cooled tube detachably connected to the box body. By using the water-cooled tube detachable pulse transformer of this utility model, the water-cooled tube and the oil tank can be detachably installed, the risk of oil tank leakage is reduced, and the later maintenance is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology. Specifically, this utility model relates to a water-cooled tube detachable pulse transformer. Background Technology

[0002] Traditional oil-immersed transformers are generally equipped with a cooling system, the most common of which is water cooling. Due to factors such as heat dissipation efficiency and economic cost, most oil-immersed transformers use high-strength and relatively inexpensive steel plates as the main structure of the oil tank, and weld high thermal conductivity copper pipes inside as the cooling structure, which can save on manufacturing costs while ensuring heat dissipation efficiency.

[0003] The welding process between copper water-cooled pipes and iron oil tanks is complex, and the difference in physical properties leads to a high risk of welding defects, such as porosity, cracks, and weld beads.

[0004] Utility model patent CN219246473U, published on June 23, 2023, discloses a transformer housing that is easy to disassemble. The housing includes: a lower housing; a support plate fixedly mounted on the inner wall of the lower housing; a connecting assembly rotatably connected to the bottom of the inner wall of the lower housing; a first gear penetratingly connected to the outer wall of the output end of a servo motor; a second gear meshing with the outer wall of the first gear; and a connecting bolt threadedly meshing with the inner wall of an internally threaded cylinder. However, this easily disassembled transformer housing does not solve the aforementioned technical problem. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a pulse transformer with a detachable water-cooling tube, which allows for the detachable installation of the water-cooling tube and the oil tank, reduces the risk of oil tank leakage, and facilitates subsequent maintenance.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The water-cooled detachable pulse transformer includes a housing with a cover on top. The transformer body is located inside the housing, and a connection structure is provided between the transformer body and the cover. The water-cooled pipe is detachably connected to the housing.

[0007] The water-cooling pipe is provided with a limiting sealing groove and an adapter at its end. The adapter extends out of the housing and the limiting sealing groove is located inside the housing. A sealing ring is provided between the inner side of the housing and the limiting sealing groove. The sealing ring abuts against the inner side of the housing. The housing is provided with mounting holes around the adapter. Both the limiting sealing groove and the sealing ring are provided with connection holes corresponding to the mounting holes.

[0008] The transformer body has a base plate at the bottom and a clamping plate at the top. The transformer body is located between the base plate and the clamping plate, and the base plate and the clamping plate are connected by bolts. The connection structure includes a support plate, the top of which is fixedly connected to the tank cover, and the support plate and the end of the clamping plate are connected by screws.

[0009] The water-cooled tube detachable pulse transformer also includes an insulator and a terminal block, with the terminal block extending from the top of the tank cover; the tank cover has a through hole, with the top of the insulator extending from the through hole, the inner diameter of the through hole being larger than the outer diameter of the bottom post of the insulator, and a glue groove provided at the top of the through hole.

[0010] The lid of the box is equipped with a handle at the top.

[0011] The water-cooling pipes are distributed in a curved manner on both sides of the transformer body, and the two ends of the water-cooling pipes are located on the same side of the tank.

[0012] The top of the box is provided with a support part, the size of which is adapted to the size of the box cover, and the support part is connected to the box cover by bolts; the bottom of the box is provided with a fixing plate, and the fixing plate is provided with waist holes.

[0013] The technical effects of this utility model are as follows: 1. The water cooling pipe adopts an installation-type structure, which is easy to replace and avoids welding between the copper water cooling pipe and the iron oil tank, reducing the risk of oil tank leakage caused by welding problems.

[0014] 2. The transformer body and the tank cover are connected by clamps and brackets, which reduces the sealing leakage points of the tank cover and allows the transformer body to be assembled by hoisting, which facilitates the initial assembly and subsequent maintenance. At the same time, the clamps can also play a role in cable management.

[0015] 3. The insulators are installed using reliable oil-resistant sealant with double-sided gluing, which reduces the insulator processing cost and improves the reliability of the seal of the oil-immersed transformer. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following: Figure 1 This is an assembly diagram of the transformer body of this utility model; Figure 2 This is a schematic diagram of the fuel tank structure of this utility model; Figure 3 This is a schematic diagram of the structure of the box lid of this utility model.

[0017] The following are marked in the diagram: 1. Enclosure; 2. Enclosure cover; 3. Transformer body; 4. Water cooling pipe; 5. Limiting sealing groove; 6. Adapter; 7. Sealing ring; 8. Mounting hole; 9. Handle; 10. Retracting groove; 11. Base plate; 12. Clamping plate; 13. Support plate; 14. Insulator; 15. Terminal block; 16. Through hole; 17. Glue groove; 18. Fixing plate; 19. Support part. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this invention, and to facilitate its implementation.

[0019] like Figures 1 to 3 As shown, the water-cooled detachable pulse transformer includes a housing 1, a housing cover 2 on the top of the housing 1, a transformer body 3 inside the housing 1, a connecting structure between the transformer body 3 and the housing cover 2, and a water-cooled pipe 4 detachably connected to the housing 1.

[0020] Compared to the traditional oil tank manufacturing method, this water-cooled tube detachable pulse transformer adopts an installation structure to connect the water-cooled tube 4 and the oil tank, which can avoid the risk of welding the copper water-cooled tube 4 to the iron oil tank. A reasonable sealing structure is set at the assembly connection between the water-cooled tube 4 and the tank body 1 to ensure the airtightness of the tank body 1, and to achieve the purpose of facilitating installation and subsequent maintenance.

[0021] like Figure 2 As shown, the water-cooling pipe 4 has a limiting sealing groove 5 and an adapter 6 at its end. The adapter 6 extends from the housing 1, and the limiting sealing groove 5 is located inside the housing 1. A sealing ring 7 is provided between the inner side of the housing 1 and the limiting sealing groove 5, and the sealing ring 7 abuts against the inner side of the housing 1. The housing 1 has mounting holes 8 around the adapter 6, and both the limiting sealing groove 5 and the sealing ring 7 have connection holes corresponding to the mounting holes 8. The limiting sealing groove 5 is adapted to the shape of the sealing ring 7, and its contact part with the edge of the sealing ring 7 has a flanged structure to prevent the sealing ring 7 from expanding outward after installation, further improving the sealing performance. The limiting sealing groove 5 and the sealing ring 7 are fixed to the housing 1 by four bolts at the end of each water-cooling pipe 4, forming a reliable sealing effect. The water-cooling pipe 4 adopts the above-mentioned detachable installation structure, so it can be bent into any shape as needed and then put into the oil tank body for assembly, reducing the assembly and processing difficulty. The sealing is achieved by the contact between its end sealing surface and the inner surface of the oil tank and the use of nitrile rubber sealing rings 7. The lower end of the thread of the adapter 6 at the front end of the water cooling pipe 4 has a relief groove 10 with a small inner diameter. The inner diameter of the sealing ring 7 is slightly smaller than the thread size. During installation, the sealing ring 7 is rotated into the relief groove 10 and then the adapter 6 is passed through the through hole 16 and bolted.

[0022] like Figure 1 As shown, the transformer body 3 has a base plate 11 at its bottom and a clamping plate 12 at its top. The transformer body 3 is located between the base plate 11 and the clamping plate 12, which are connected by bolts. The connection structure includes a support plate 13, the top of which is fixedly connected to the tank cover 2, and the ends of the support plate 13 and the clamping plate 12 are connected by screws. The base plate 11 and the clamping plate 12 are connected by four bolts, and the clamping plate 12 and the tank cover 2 are connected from the side by two support plates 13 using GB819 screws. Compared with the traditional structure, this avoids sealing the tank cover 2, reducing the risk of leakage, and making installation more convenient. The support plate 13 and the clamping plate 12 enable the tank cover 2 and the transformer body 3 to form an integral hoisting structure. This integral hoisting structure also eliminates the need to remove transformer oil during later maintenance; the pulse transformer body 3 can be removed and allowed to drain oil before maintenance. Meanwhile, holes can be drilled in the clamp plate 12 at the corresponding positions as needed to facilitate wiring between the main transformer and the box cover 2. When the corresponding wire harness passes through the holes in the clamp plate 12 and connects to the box cover 2, it is restricted to a certain range, which not only makes the wiring look neater and more orderly, but also avoids direct contact between wire harnesses of different voltages, reducing the risk of arcing.

[0023] like Figure 3 As shown, this water-cooled detachable pulse transformer also includes an insulator 14 and a terminal block 15. The terminal block 15 extends from the top of the enclosure cover 2. The enclosure cover 2 has a through hole 16, through which the top of the insulator 14 extends. The inner diameter of the through hole 16 is larger than the outer diameter of the bottom post of the insulator 14. A glue groove 17 is provided at the top of the through hole 16. The terminal block 15 and the enclosure cover 2 are sealed by a sealing ring 7. The insulator 14 is made by epoxy resin injection, which is cheaper and faster than using conventional insulating rods, allowing for mass production. The insulator 14 is glued to the enclosure cover 2 with reliable oil-resistant sealant. A glue groove 17 is opened on the front of the enclosure cover 2 so that a small section of the insulator 14 can be embedded in the enclosure cover 2. A countersunk hole is opened on the back of the enclosure cover 2 for filling with sealant to achieve double-sided gluing and fixing. This ensures airtightness while significantly reducing processing difficulty and shortening the processing cycle. Meanwhile, the diameter of the through hole 16 in the cover 2 needs to be about 2mm larger than the bottom post of the insulator 14 so that the sealant can fully penetrate and achieve double-sided adhesive sealing. This method not only solves the problem of easy cracking of the threads on the insulator 14, but also allows the sealant to have a certain degree of resistance in high and low temperature environments.

[0024] like Figure 1 As shown, the top of the cover 2 is equipped with a handle 9. After the cover 2 is removed, the two handles 9 can be used to easily lift or hoist the transformer body 3 from bottom to top by personnel or equipment, facilitating subsequent maintenance and repair.

[0025] like Figure 2As shown, the water-cooling pipes 4 are distributed in a curved manner on both sides of the transformer body 3, with both ends of the water-cooling pipes 4 located on the same side of the enclosure 1. This structure increases the path length of the water-cooling pipes 4 within the enclosure 1, thereby improving cooling efficiency. Setting the adapters 6 at both ends of the water-cooling pipes 4 on the same side of the enclosure 1 not only facilitates the installation and disassembly of the water-cooling pipes 4 but also facilitates the arrangement of cooling lines outside the enclosure 1.

[0026] like Figure 2 As shown, the top of the box body 1 is provided with a support part 19, the size of which is adapted to the size of the box cover 2. The support part 19 and the box cover 2 are connected by bolts. The bottom of the box body 1 is provided with a fixing plate 18, which has waist holes. The support part 19 increases the connection area between the top of the box body 1 and the box cover 2. The two are connected by multiple bolts to form a whole. The fixing plate 18 can fix the overall structure stably by installing connectors through the waist holes.

[0027] The technical advantages of this detachable water-cooled pulse transformer are as follows: 1. The water-cooled tube 4 adopts an installation-type structure, which is convenient for replacement and avoids welding between the copper water-cooled tube 4 and the iron oil tank, reducing the risk of oil leakage caused by welding problems. 2. The transformer body 3 and the tank cover 2 are connected by a clamp plate 12 and a bracket plate 13, reducing the sealing leakage points of the tank cover 2. This allows the transformer body 3 to be assembled by hoisting, which is convenient for early assembly and later maintenance. At the same time, the clamp plate 12 can also play a role in cable management. 3. The insulator 14 is installed with reliable oil-resistant sealant, double-sided adhesive sealing, which reduces the processing cost of the insulator 14 and improves the reliability of the seal of the oil-immersed transformer.

[0028] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A water-cooled tube detachable pulse transformer, characterized in that: Includes a housing (1), the top of which is provided with a cover (2), the inside of which is provided with a transformer body (3), the transformer body (3) and the cover (2) are provided with a connecting structure, and the water cooling pipe (4) is detachably connected to the housing (1); The water-cooling pipe (4) is provided with a limiting sealing groove (5) and an adapter (6) at its end. The adapter (6) extends out from the box (1). The limiting sealing groove (5) is located inside the box (1). A sealing ring (7) is provided between the inner side of the box (1) and the limiting sealing groove (5). The sealing ring (7) abuts against the inner side of the box (1). The box (1) is provided with mounting holes (8) around the adapter (6). The limiting sealing groove (5) and the sealing ring (7) are both provided with connection holes corresponding to the mounting holes (8).

2. The water-cooled tube detachable pulse transformer according to claim 1, characterized in that: The transformer body (3) has a base plate (11) at the bottom and a clamping plate (12) at the top. The transformer body (3) is located between the base plate (11) and the clamping plate (12). The base plate (11) and the clamping plate (12) are connected by bolts. The connection structure includes a support plate (13). The top of the support plate (13) is fixedly connected to the box cover (2). The ends of the support plate (13) and the clamping plate (12) are connected by screws.

3. The water-cooled tube detachable pulse transformer according to claim 2, characterized in that: It also includes an insulator (14) and a terminal block (15), the terminal block (15) extending from the top of the box cover (2); the box cover (2) is provided with a through hole (16), the top of the insulator (14) extends from the through hole (16), the inner diameter of the through hole (16) is larger than the outer diameter of the bottom post of the insulator (14), and the top of the through hole (16) is provided with a glue groove (17).

4. The water-cooled tube detachable pulse transformer according to claim 3, characterized in that: The top of the lid (2) is provided with a handle (9).

5. The water-cooled tube detachable pulse transformer according to any one of claims 1-4, characterized in that: The water-cooling pipe (4) is distributed in a curved manner on both sides of the transformer body (3), and the two ends of the water-cooling pipe (4) are located on the same side of the box (1).

6. The water-cooled tube detachable pulse transformer according to claim 1, characterized in that: The box body (1) is provided with a support part (19) on top. The size of the support part (19) is adapted to the size of the box cover (2). The support part (19) and the box cover (2) are connected by bolts. The box body (1) is provided with a fixing plate (18) at the bottom. The fixing plate (18) is provided with waist holes.

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