A high-sealing resistance welded transformer

Abstract

The application discloses a high-sealing-resistance resistance welding transformer and relates to the technical field of transformers, which comprises an outer shell body, one end of the outer shell body is fixedly connected with an end cover plate, the middle part of the end cover plate is fixedly installed with an end assembly, one side of the end assembly is provided with a rectifier assembly, the end assembly comprises a positive electrode terminal and a negative electrode terminal which are used for being connected with external equipment, and a current detection ring is fixedly installed between the positive electrode terminal and the rectifier assembly; the transformer cooling water channel structure is improved, water enters the center plate and is sent to the cooling cavities in the two terminal guide plates through two shunt cavities, and thus only sealing washers need to be arranged at the positions of the two water inlet openings in the water inlet circuit of the end assembly and the rectifier assembly; the sealing of the cooling water can be better completed through the cooperation of the two sides of the pressing plates and the abutting and extruding of the opposite bolts, the use of the sealing washers is reduced, and the water leakage risk is lowered.

Description

Technical Field

[0001] This invention relates to the field of transformer-related technologies, specifically a high-sealing resistance-welded transformer. Background Technology

[0002] Because existing transformers use silver soldering for many connections, welding defects exist, including poor weld quality, porosity, air bubbles, inadequate silver solder filling, and incompatible bonding surfaces. After a period of use, electromagnetic vibration and external impact vibrations cause internal pores and air bubbles in the welds to crack and connect, increasing the cracks at the bonding surface and leading to water leakage. Furthermore, the water inlet points at the ends of existing transformers often require sealing rings for cooling water inlets; loosening of these sealing rings during subsequent use can also easily cause serious water leakage accidents.

[0003] To avoid or reduce the risk of water leakage and improve the overall sealing performance of the device, the most direct method is to avoid or reduce the use of welding processes for connections and minimize the number of sealing rings used. Therefore, a high-sealing resistance-welded transformer is proposed here. Summary of the Invention

[0004] The purpose of this invention is to provide a high-sealing resistance-welded transformer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-sealing resistance welding transformer includes an outer casing, an end cover plate fixedly connected to one end of the outer casing, an end assembly fixedly installed in the middle of the end cover plate, a rectifier assembly provided on one side of the end assembly, the end assembly including a positive terminal and a negative terminal for connecting to an external device, and a current detection ring fixedly installed between the positive terminal and the rectifier assembly.

[0007] The rectifier assembly includes a center plate, on both sides of the center plate are diode rectifier assemblies, on one side of each of the two diode rectifier assemblies are terminal guide plates, on one side of each of the two terminal guide plates are clamping plates, and the four corners of the two end clamping plates are locked and fixed by tie bolts. The middle of a plurality of tie bolts passes through the diode rectifier assemblies and the center plate to install and fix the rectifier assembly.

[0008] A cooling cavity is provided in the middle of each of the two terminal guide plates, and an inlet is provided on one side of each of the two cooling cavities. A sealing gasket is fixedly connected to the edge of each of the two inlets. A water inlet cavity is provided inside the center plate, and an inlet is provided on one side of the water inlet cavity. An extension is provided below the center plate, and a diversion cavity is provided on both sides of the extension. The two diversion cavities are respectively connected to the two sides of the cooling cavity.

[0009] A transformer body is fixedly mounted on one side of the rectifier assembly. A positive terminal connection plate and a negative terminal connection plate are provided between the rectifier assembly and the transformer body. The positive terminal connection plate is electrically connected to the positive terminal via the rectifier assembly, and the negative terminal connection plate is electrically connected to the negative terminal. The transformer body includes an iron core and windings. The windings include a copper tube and a coil wound around the copper tube. Both the positive and negative terminal connection plates have connection slots on their sides near the transformer body. Both the positive and negative terminal connection plates have flow guiding cavities in their middle sections. One end of each flow guiding cavity is connected to the middle of the connection slot. Both ends of the copper tube are engaged with the flow guiding cavities on the positive and negative terminal connection plates, respectively. The inner cavity of the copper tube is connected to the flow guiding cavity. The other end of the flow guiding cavity is connected to a cooling cavity.

[0010] A tail cover is fixedly installed at the other end of the housing. A power quick connector, a current detection ring adjustment knob, an electrode pressure sensor input connector, an electrode voltage detection connector, and a bus multi-function connector are fixedly installed on one side of the tail cover.

[0011] As a further embodiment of the present invention: the outer shell includes a front shell and a rear shell, and the four corners of the end cover are threaded with mounting screws. The mounting screws pass through the front shell and are threadedly connected to the edge of the rear shell. The outer walls of the front shell and the rear shell are fixedly connected with a plurality of reinforcing plates, and the middle of the plurality of reinforcing plates is provided with mounting holes.

[0012] As a further aspect of the present invention: an inner shell is fitted inside the outer shell, and a plurality of equally spaced buffer grooves are formed on the outer wall of the inner shell. Each of the buffer grooves has a mounting washer fixedly connected to its inner wall. A push post is slidably connected to the inner wall of the mounting washer. A plurality of push springs are fixedly connected to the middle of the inner wall of the mounting washer. The tops of the push springs are in close contact with the bottoms of the push posts, and the tops of the push posts are in contact with the inner wall of the outer shell.

[0013] As a further aspect of the present invention: both ends of the wrapped copper tube are fixedly connected to sealing locking components, the sealing locking components include snap-fit ​​spring pieces, and the outer wall of the snap-fit ​​spring pieces is fixedly connected to a sealing gasket; a sealing snap-fit ​​groove is opened in the middle of the inner wall of the flow guide cavity, the sealing snap-fit ​​groove is correspondingly arranged and snap-fitted with the snap-fit ​​spring piece; a locking plate is provided on one side of the snap-fit ​​spring piece, the locking plate is snap-fitted with a connecting slot, a pressure gasket is fixedly connected to one side of the locking plate, and a plurality of locking bolts are threadedly connected to the edge of the locking plate, the locking plate is fixedly connected to the connecting slot through the locking bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention improves the transformer cooling water circuit structure by having a central plate for water inlet and two branch chambers to deliver water to the cooling chambers inside the two terminal guide plates. This means that for the water inlet circuits of the end components and rectifier components, only sealing gaskets need to be set at the two water inlet positions. With the cooperation of the pressure plates on both sides and the tie bolts, the cooling water can be well sealed, thereby reducing the use of sealing gaskets and reducing the risk of water leakage.

[0015] This invention detects the operating current of a transformer by setting a current detection ring. The detection accuracy of the current detection ring can be adjusted by using an adjustment knob on the tail cover. The current detection function is integrated into the transformer. By integrating multiple functional interfaces on the tail cover, the overall practicality and functionality of the transformer are improved. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the position structure of the end component of the present invention;

[0018] Figure 3 This is a schematic diagram of the rectifier assembly of the present invention;

[0019] Figure 4 This is a cross-sectional view of the rectifier assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the main structure of the transformer of the present invention;

[0021] Figure 6 This is a cross-sectional view of the sealing and locking component of the present invention;

[0022] Figure 7 This is a schematic diagram of the inner shell structure of the present invention;

[0023] Figure 8 This is a cross-sectional view of the buffer groove of the present invention.

[0024] In the diagram: 1. Outer shell; 2. End cover; 3. Tail cover; 4. Positive terminal; 5. Negative terminal; 6. Reinforcing plate; 7. Power quick connector; 8. Iron core; 9. Wrapped copper tube; 10. Locking plate; 11. Mounting screw; 12. Positive connection plate; 13. Negative connection plate; 14. Current detection ring; 15. Center plate; 16. Pressure plate; 17. Cooling chamber; 18. Terminal guide plate; 19. Diverter chamber; 20. Inlet; 21. Sealing gasket; 22. Pressure gasket; 23. Snap-fit ​​spring; 24. Inner shell; 25. Push post; 26. Mounting gasket; 28. Push spring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-8 In this embodiment of the invention, a high-sealing resistance welding transformer includes a housing 1. An end cover 2 is fixedly connected to one end of the housing 1. An end assembly is fixedly installed in the middle of the end cover 2. A rectifier assembly is provided on one side of the end assembly. The end assembly includes a positive terminal 4 and a negative terminal 5 for connection to external devices. A current detection ring 14 is fixedly installed between the positive terminal 4 and the rectifier assembly. A tail cover 3 is fixedly installed at the other end of the housing 1. A power quick connector 7, a current detection ring 14 adjustment knob, an electrode pressure sensor input connector, and an electrode voltage detection sensor are fixedly installed on one side of the tail cover 3. The connector is a multi-functional bus connector. The transformer's operating current is detected by a current detection ring 14. The detection accuracy of the current detection ring 14 is adjusted using a knob located on the tail cover 3, integrating the current detection function inside the transformer. By integrating multiple functional interfaces on the tail cover 3, the overall practicality and functionality of the transformer are improved. In the manufacturing of end components and overall components, this application reduces the use of welding connections by using bolted connections or integral casting, thereby avoiding weld damage caused by vibration and resulting in decreased sealing performance.

[0027] The rectifier assembly includes a center plate 15, with diode rectifier assemblies on both sides of the center plate 15. A terminal guide plate 18 is provided on one side of each of the two diode rectifier assemblies. The diode rectifier assemblies are implemented using existing technology.

[0028] To ensure the stability and tightness of the overall structure of the rectifier assembly, a clamping plate 16 is provided on one side of each of the two terminal guide plates 18. The four corners of the two end clamping plates are locked and fixed by tie bolts. The middle of several tie bolts passes through the diode rectifier assembly and the center plate 15 to install and fix the rectifier assembly.

[0029] Cooling chambers 17 are provided in the middle of the two terminal guide plates 18. Inlet ports 20 are provided on one side of the two cooling chambers 17. Sealing gaskets 21 are fixedly connected to the edges of the two inlet ports 20. A water inlet chamber is provided inside the center plate 15. A water inlet is provided on one side of the water inlet chamber. An extension is provided below the center plate 15. Diverting chambers 19 are provided on both sides of the extension. The two diverting chambers 19 are respectively connected to the two sides of the cooling chamber 17.

[0030] This application improves the transformer cooling water circuit structure by having a central plate 15 for water inlet and two branch chambers 19 for water delivery to the cooling chambers 17 inside the two terminal guide plates 18. This allows for better sealing of the cooling water in the water inlet circuits of the end components and rectifier components by simply installing sealing gaskets 21 at the two water inlet positions, which, together with the clamping plates 16 on both sides and the tie bolts, can effectively reduce the use of sealing gaskets 21 and lower the risk of leakage.

[0031] A transformer body is fixedly installed on one side of the rectifier assembly. A positive terminal connection plate 12 and a negative terminal connection plate 13 are provided between the rectifier assembly and the transformer body. The positive terminal connection plate 12 is electrically connected to the positive terminal 4 through the rectifier assembly, and the negative terminal connection plate 13 is electrically connected to the negative terminal 5. The transformer body includes an iron core 8 and windings. The windings include a copper tube 9 and a coil wound on the copper tube 9. Both the positive terminal connection plate 12 and the negative terminal connection plate 13 have connection slots on the side near the transformer body. Both the positive terminal connection plate 12 and the negative terminal connection plate 13 have flow guiding cavities in the middle. One end of the flow guiding cavity is connected to the middle of the connection slot; the other end of the flow guiding cavity is connected to the cooling cavity 17. By setting the flow guiding cavity and other structures, external cooling water is introduced into the copper tube to achieve cooling of the transformer body.

[0032] To achieve the connection between the positive electrode connecting plate 12 and the negative electrode connecting plate 13 of the wrapped copper tube 9, both ends of the wrapped copper tube 9 are respectively engaged with the flow guiding cavities on the positive electrode connecting plate 12 and the negative electrode connecting plate 13, and the inner cavity of the wrapped copper tube 9 is connected to the flow guiding cavity. The engagement connection method can effectively avoid the formation of air bubbles, pores and other defects in the joint surface after welding, which is a problem when welding is used. The engagement connection method also makes the disassembly and assembly of the wrapped copper tube 9 simpler and facilitates the cleaning of the inner cavity and flow guiding cavity of the wrapped copper tube 9, thereby ensuring the cleanliness of the inner wall of the wrapped copper tube 9 and thus ensuring its heat conduction capacity.

[0033] To ensure the sealing of the connection between the wrapped copper tube 9 and the flow guide cavity, sealing locking components are fixedly connected to both ends of the wrapped copper tube 9. The sealing locking components include snap-fit ​​spring pieces 23, and sealing gaskets are fixedly connected to the outer wall of the snap-fit ​​spring pieces 23. A sealing snap-fit ​​groove is opened in the middle of the inner wall of the flow guide cavity. The sealing snap-fit ​​groove is correspondingly set and snap-fitted to the snap-fit ​​spring pieces 23. The top of the snap-fit ​​spring pieces 23 is inclined to facilitate the insertion of the wrapped copper tube 9. Under the action of the snap-fit ​​spring pieces 23, the sealing gasket is in contact with the inner wall of the sealing snap-fit ​​groove to block and seal the water flow.

[0034] A locking plate 10 is provided on one side of the snap-fit ​​spring 23. The locking plate 10 is engaged with the connecting slot. A pressure washer 22 is fixedly connected to one side of the locking plate 10. Several locking bolts are threadedly connected to the edge of the locking plate 10. The locking plate 10 is fixedly connected to the connecting slot through the locking bolts. By setting the locking plate 10 and the locking bolts, the installation stability of the wrapped copper tube 9 is improved, and the locking plate 10 pushes against the pressure washer 22 to further improve the sealing of the connection position between the wrapped copper tube 9 and the guide cavity.

[0035] The outer casing 1 includes a front casing and a rear casing. Each of the four corners of the end cover plate 2 is threaded with a mounting screw 11. The mounting screw 11 passes through the front casing and is threaded to the edge of the rear casing. Several reinforcing plates 6 are fixedly connected to the outer walls of both the front and rear casings, and each reinforcing plate 6 has a mounting hole in its center. By designing the outer casing 1 as a separable front and rear casing, it facilitates separate disassembly and replacement, simplifying maintenance operations. Furthermore, by replacing the front and rear casings with different lengths, this type of outer casing 1 can adapt to transformer bodies of different sizes, improving the flexibility of the device and facilitating the maintenance and parts preparation of the outer casing 1 components.

[0036] An inner shell 24 is fitted inside the outer shell 1. The outer wall of the inner shell 24 has several equidistantly distributed buffer grooves. The inner walls of the buffer grooves are fixedly connected to mounting washers 26. The inner walls of the mounting washers 26 are slidably connected to push posts 25. Several push springs 28 are fixedly connected to the middle of the inner wall of the mounting washers 26. The tops of the push springs 28 are in close contact with the bottoms of the push posts 25, and the tops of the push posts 25 are in contact with the inner wall of the outer shell 1. By setting buffer grooves and push posts on the inner shell 24, and using the push springs 28 to push the push posts to contact the outer shell 1, some of the vibrations transmitted from the outside and the electromagnetic vibrations generated during the operation of the transformer are converted into the deformation and movement of the push springs 28, thereby absorbing the vibrations. This makes it difficult for the internal welded structure and bolted connection structure to loosen, thus ensuring the sealing of the transformer during long-term operation.

[0037] In use, the transformer is connected to an external circuit via the positive terminal 4 and the negative terminal 5. The transformer is fixed in place by using the reinforcing plate 6 and its mounting holes, along with external bolts and other connecting parts. Then, it is connected to an external water cooling device. During operation, external water enters the water inlet chamber through the inlet, then flows through two branch chambers 19, and is sent to the cooling chambers 17 of the two terminal guide plates 18 through two inlet ports 20. The cooling water is then sent out of the cooling chambers 17 and into the guide chambers, and into the inner cavity of each copper tube 9 to dissipate heat and cool the copper tubes 9 and the coils wound on them.

[0038] The vibrations generated during operation cause the inner housing 24 to move, which in turn causes each push spring 28 to move the push rods to extend and retract, absorbing the vibrations and reducing the damage to the structural connection stability of the transformer.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-sealing resistance welding transformer, comprising a housing (1), an end cover plate (2) fixedly connected to one end of the housing (1), an end assembly fixedly installed in the middle of the end cover plate (2), the end assembly comprising a positive terminal (4) and a negative terminal (5), a rectifier assembly disposed on one side of the end assembly, a transformer body disposed on one side of the rectifier assembly, and a positive terminal connecting plate (12) and a negative terminal connecting plate (13) disposed between the rectifier assembly and the transformer body; characterized in that, The rectifier assembly includes a center plate (15), on both sides of the center plate (15) are diode rectifier assemblies, on one side of each of the two diode rectifier assemblies are terminal guide plates (18), on one side of each of the two terminal guide plates (18) are clamping plates (16), the four corners of the two clamping plates (16) are locked and fixed by tie bolts, and the middle of several tie bolts passes through the diode rectifier assembly and the center plate (15); the middle of each of the two terminal guide plates (18) is provided with a cooling cavity (17), on one side of each of the two cooling cavities (17) is provided with an inlet (20), and the edges of each of the two inlets (20) are fixedly connected with sealing gaskets (21); the interior of the center plate (15) is provided with a water inlet cavity, and an extension is provided below the center plate (15), and shunt cavities (19) are provided on both sides of the extension, and the two shunt cavities (19) are respectively connected to the two sides of the cooling cavity (17).

2. The high-sealing resistance welding transformer according to claim 1, characterized in that, The positive electrode connecting plate (12) and the negative electrode connecting plate (13) are provided with connection slots on the side near the transformer body. The positive electrode connecting plate (12) and the negative electrode connecting plate (13) are provided with flow guiding cavities in the middle. The transformer body includes a wrapped copper tube (9). The inner cavity of the wrapped copper tube (9) is connected to the flow guiding cavity. Both ends of the wrapped copper tube (9) are fixedly connected with sealing locking components.

3. A high-sealing resistance welding transformer according to claim 2, characterized in that, The sealing locking component includes a snap-fit ​​spring (23), and a sealing gasket is fixedly connected to the outer wall of the snap-fit ​​spring (23); a sealing snap-fit ​​groove is provided in the middle of the inner wall of the flow guide cavity, and the sealing snap-fit ​​groove is engaged with the snap-fit ​​spring (23).

4. A high-sealing resistance welding transformer according to claim 3, characterized in that, A locking plate (10) is provided on one side of the snap-fit ​​spring (23). The locking plate (10) is engaged with the connecting slot. A pressure washer (22) is fixedly connected to one side of the locking plate (10). Several locking bolts are threadedly connected to the edge of the locking plate (10).

5. A high-sealing resistance welding transformer according to claim 1, characterized in that, The outer shell (1) includes a front shell and a rear shell. The four corners of the end cover plate (2) are threaded with mounting screws (11). The outer walls of the front shell and the rear shell are fixedly connected with several reinforcing plates (6). The middle of each of the reinforcing plates (6) is provided with mounting holes.

6. A high-sealing resistance welding transformer according to claim 1, characterized in that, The outer shell (1) is fitted with an inner shell (24). The outer wall of the inner shell (24) is provided with several equally spaced buffer grooves. The inner walls of the buffer grooves are fixedly connected with mounting washers (26). The inner walls of the mounting washers (26) are slidably connected with push posts (25). The middle part of the inner wall of the mounting washers (26) is fixedly connected with several push springs (28). The tops of the push springs (28) are in close contact with the bottom of the push posts (25).

7. A high-sealing resistance welding transformer according to claim 1, characterized in that, A current detection ring (14) is provided between the positive terminal (4) and the rectifier assembly; a tail cover (3) is fixedly installed at the other end of the housing (1), and a power quick connector (7), a current detection ring (14) adjustment knob, an electrode pressure sensor input connector, an electrode voltage detection connector, and a bus multifunction connector are fixedly installed on one side of the tail cover (3).

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