Waterproof end cover of transformer

Abstract

The utility model discloses a waterproof end cover of a transformer, and relates to the waterproof field of transformers. The waterproof end cover of the transformer comprises an aluminum die-casting cover, the aluminum die-casting cover comprises an outer wrapping shell, an inner heat conduction hollow pipe and an inner heat conduction damping piece, and an annular containing cavity wrapping the transformer is formed between the outer wrapping shell and the inner heat conduction hollow pipe; and a sealing bottom cover is fixedly mounted at the bottom end of the aluminum die-casting cover. According to the waterproof end cover of the transformer, the annular transformer is installed in the annular containing cavity, the interior of the inner heat conduction hollow pipe is in a penetrating shape, on one hand, the heat dissipation area is effectively increased, meanwhile, shock absorption protection is achieved through the inner heat conduction shock absorption piece, and meanwhile effective heat is transferred to the aluminum die-casting cover; in addition, the aluminum adaptive baffle at the bottom replaces traditional resin encapsulation, heat dissipation is further enhanced, and compared with a traditional annular transformer waterproof end cover, the annular transformer waterproof end cover has the advantage that the heat dissipation effect is obviously enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer waterproofing, in particular to a transformer waterproof end cover. Background Art

[0002] Toroidal transformers are widely used in household appliances and other electronic devices with high technical requirements. In some special usage environments, they need to have good waterproof properties, so they are usually equipped with corresponding waterproof end covers.

[0003] The traditional solution is to wrap it with a circular buckle cover, and then fill the bottom opening with resin for packaging. The wires pass through from both sides or the bottom, and resin is also poured for the wire penetration part. As a small and medium-sized transformer, the toroidal transformer originally has a small heat generation, and the heat generated by itself will not affect its own use. However, after the waterproof end cover is installed, due to the wrapping of the end cover and the poor heat dissipation performance of general waterproof resin, the internal heat diffusion effect is limited, and there is a situation where the heat is not timely drained and the transformer is damaged. For this reason, a transformer waterproof end cover is specially provided to solve the above problem. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a waterproof end cover for a transformer, which solves the problem that after the waterproof end cover is installed on the toroidal transformer, the heat diffusion effect of the internal heat is limited due to the wrapping of the end cover and the poor heat dissipation performance of general waterproof resins, resulting in damage to the transformer due to untimely heat conduction.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A transformer waterproof end cover, comprising an aluminum die-cast cover, the aluminum die-cast cover comprising;

[0006] outer covering shell;

[0007] An inner heat-conducting hollow tube is integrally formed in the middle of the outer covering shell, and an annular cavity for covering the transformer is formed between the outer covering shell and the inner heat-conducting hollow tube;

[0008] An internal heat-conducting and shock-absorbing component is arranged inside the annular cavity;

[0009] A sealing bottom cover is fixedly mounted on the bottom end of the aluminum die-cast cover, and the sealing bottom cover seals and shields the bottom of the annular cavity.

[0010] Preferably, the outer wall of the bottom end of the outer covering shell is integrally formed with an assembly part, the sealed bottom cover includes an aluminum adapter baffle, the lower surface of the assembly part is provided with an assembly groove, the aluminum adapter baffle is fixedly installed inside the assembly groove, and both ends of the assembly part and the aluminum adapter baffle are provided with mounting holes.

[0011] Preferably, galvanized bolts are installed between the aluminum adapter baffle and the assembly part, and wire connecting parts are integrally formed on the top of both ends of the assembly part. The wire connecting parts are connected to the inside of the annular cavity, and the galvanized bolts pass through the wire connecting parts.

[0012] Preferably, a sealing resin is poured inside the wire connecting portion, and the sealing resin adheres to the outer surface of the galvanized bolt.

[0013] Preferably, a sealing portion is integrally formed on the top of the aluminum adapting baffle, and the sealing portion is movably plugged into the inner bottom of the annular cavity.

[0014] Preferably, an annular sealing rubber ring is provided between the outer ring of the sealing portion and the annular cavity.

[0015] Preferably, a positioning ring is integrally formed on the upper surface of the sealing portion, and the positioning ring is movably sleeved on the outer surface of the bottom end of the inner heat-conducting hollow tube.

[0016] Preferably, a reverse ring is integrally formed on the inner side of the positioning ring, and a sealing reverse interface is opened at the inner bottom end of the inner heat-conducting hollow tube. The reverse ring is movably inserted in the sealing reverse interface, and the inner ring of the reverse ring has the same diameter as the inner ring of the inner heat-conducting hollow tube.

[0017] Preferably, the inner heat-conducting shock-absorbing component includes an outer heat-conducting rubber layer and an inner heat-conducting rubber layer, the outer heat-conducting rubber layer is adhered to the inner wall of the outer covering shell, and the inner heat-conducting rubber layer is adhered to the outer ring surface of the inner heat-conducting hollow tube.

[0018] The utility model discloses a waterproof end cover for a transformer, which has the following beneficial effects: the device arranges an inner heat-conducting hollow tube in the middle of an outer covering shell to form an annular cavity between the two, and arranges an inner heat-conducting shock-absorbing component on the inner wall of the annular container, so that the annular transformer is installed inside the annular cavity, and an aluminum adapter baffle is used for installation at the bottom of the cavity. On the one hand, the heat dissipation area is effectively increased, and shock absorption protection is achieved by utilizing the inner heat-conducting shock-absorbing component, while effective heat is transferred to the aluminum die-cast cover. The aluminum adapter baffle at the bottom replaces the traditional resin potting to further enhance heat dissipation. Compared with the traditional waterproof end cover of the annular transformer, the utility model has a significantly enhanced heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall bottom structure of the utility model;

[0022] Figure 3 This is an exploded view of the internal structure of the aluminum die-cast cover of the utility model;

[0023] Figure 4 This is a schematic diagram of the outer surface structure of the sealed bottom cover of the utility model;

[0024] Figure 5 This is a cross-sectional view of the internal structure of the aluminum die-cast cover of the present invention.

[0025] In the figure: 1. Aluminum die-cast cover; 11. Outer covering shell; 12. Assembly part; 13. Wire connection part; 14. Internal heat-conducting hollow tube; 15. Assembly groove; 16. Internal heat-conducting shock-absorbing part; 161. External heat-conducting rubber layer; 162. Internal heat-conducting rubber layer; 17. Sealing counter-interface; 2. Sealing bottom cover; 21. Aluminum adapter baffle; 22. Sealing part; 23. Annular sealing rubber ring; 24. Positioning ring; 25. Counter ring; 3. Mounting hole; 4. Galvanized bolt; 5. Sealing resin. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] The embodiment of the present application provides a waterproof end cover for a transformer, thereby solving the problem that after the waterproof end cover is installed on a toroidal transformer, the heat diffusion effect of the internal heat is limited due to the wrapping of the end cover and the very poor heat dissipation performance of general waterproof resins, resulting in damage to the transformer due to untimely heat dissipation.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] The embodiment of the utility model discloses a waterproof end cover for a transformer.

[0030] According to the attached Figure 1-5 As shown, it includes an aluminum die-cast cover 1, which includes an outer covering shell 11, an inner heat-conducting hollow tube 14 and an inner heat-conducting shock-absorbing member 16;

[0031] The inner heat-conducting hollow tube 14 is integrally formed in the middle of the outer shell 11, and an annular cavity enclosing the transformer is formed between the outer shell 11 and the inner heat-conducting hollow tube 14. The inner heat-conducting shock-absorbing member 16 is disposed within the annular cavity, which effectively increases the heat dissipation area. At the same time, the inner heat-conducting shock-absorbing member 16 provides shock absorption protection and effectively transfers heat to the aluminum die-cast cover 1, thereby enhancing heat dissipation.

[0032] A sealed bottom cover 2 is fixedly mounted on the bottom end of the aluminum die-cast cover 1 , and the sealed bottom cover 2 seals and shields the bottom of the annular cavity. The sealed bottom cover 2 replaces the traditional resin potting to further enhance heat dissipation.

[0033] An assembly portion 12 is integrally formed on the outer wall of the bottom end of the outer covering shell 11, and the sealed bottom cover 2 includes an aluminum adapter baffle 21. An assembly groove 15 is provided on the lower surface of the assembly portion 12, and the aluminum adapter baffle 21 is fixedly installed inside the assembly groove 15. Mounting holes 3 are provided at both ends of the assembly portion 12 and the aluminum adapter baffle 21.

[0034] Galvanized bolts 4 are installed between the aluminum adapter baffle 21 and the assembly part 12. Wire connection parts 13 are integrally formed at the top of both ends of the assembly part 12. The wire connection parts 13 are connected to the inside of the annular cavity. The galvanized bolts 4 pass through the wire connection parts 13, and the aluminum adapter baffle 21 is conveniently assembled through the galvanized bolts 4.

[0035] The inside of the wire connection part 13 is cast with sealing resin 5, and the sealing resin 5 adheres to the outer surface of the galvanized bolt 4. The galvanized bolt 4 is used to provide an additional adhesion contact surface for the sealing resin 5 in the wire connection part 13. At the same time, after the sealing resin 5 solidifies, it can effectively prevent the sealing resin 5 from falling off, thereby enhancing the sealing effect of the sealing resin 5.

[0036] A sealing portion 22 is integrally formed on the top of the aluminum adapter baffle 21, and the sealing portion 22 is movably inserted into the inner bottom of the annular cavity. An annular sealing rubber ring 23 is provided between the outer ring of the sealing portion 22 and the annular cavity to ensure the sealing effect between the aluminum adapter baffle 21 and the annular cavity.

[0037] A positioning ring 24 is integrally formed on the upper surface of the blocking portion 22 , and the positioning ring 24 is movably sleeved on the outer surface of the bottom end of the inner heat-conducting hollow tube 14 to prevent relative displacement between the inner heat-conducting hollow tube 14 and the blocking portion 22 , which may cause sealing failure.

[0038] An anti-ring 25 is integrally formed on the inner side of the positioning ring 24, and a sealing anti-interface 17 is opened at the inner bottom end of the inner heat-conducting hollow tube 14. The anti-ring 25 is movably inserted into the sealing anti-interface 17, and the inner ring of the anti-ring 25 has the same diameter as the inner ring of the inner heat-conducting hollow tube 14. The reverse plug-in connection is realized through the anti-ring 25, which further enhances the sealing effect.

[0039] The inner heat-conducting shock-absorbing component 16 includes an outer heat-conducting rubber layer 161 and an inner heat-conducting rubber layer 162. The outer heat-conducting rubber layer 161 is attached to the inner wall of the outer covering shell 11, and the inner heat-conducting rubber layer 162 is attached to the outer ring surface of the inner heat-conducting hollow tube 14. The inner heat-conducting shock-absorbing component 16 can be made of silicone rubber.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A transformer waterproof end cover, comprising an aluminum die-cast cover (1), characterized in that: The aluminum die-cast cover (1) comprises: An outer covering shell (11); An inner heat-conducting hollow tube (14) is integrally formed in the middle of the outer covering shell (11), and an annular cavity for covering the transformer is formed between the outer covering shell (11) and the inner heat-conducting hollow tube (14); An internal heat-conducting shock-absorbing member (16) is arranged inside the annular cavity; A sealing bottom cover (2) is fixedly mounted on the bottom end of the aluminum die-cast cover (1), and the sealing bottom cover (2) seals and shields the bottom of the annular cavity.

2. The waterproof end cover of a transformer according to claim 1, characterized in that: The outer wall of the bottom end of the outer covering shell (11) is integrally formed with an assembly portion (12); the sealed bottom cover (2) includes an aluminum adapter baffle (21); an assembly groove (15) is provided on the lower surface of the assembly portion (12); the aluminum adapter baffle (21) is fixedly installed inside the assembly groove (15); and mounting holes (3) are provided at both ends of the assembly portion (12) and the aluminum adapter baffle (21).

3. The waterproof end cover of a transformer according to claim 2, characterized in that: A galvanized bolt (4) is installed between the aluminum adapter baffle (21) and the assembly part (12), and a wire connection part (13) is integrally formed on the top of both ends of the assembly part (12), and the wire connection part (13) is connected to the inside of the annular cavity, and the galvanized bolt (4) passes through the wire connection part (13).

4. The waterproof end cover of a transformer according to claim 3, characterized in that: The inside of the wire connecting portion (13) is cast with a sealing resin (5), and the sealing resin (5) adheres to the outer surface of the galvanized bolt (4).

5. The waterproof end cover of a transformer according to claim 2, characterized in that: A sealing portion (22) is integrally formed on the top of the aluminum adapting baffle (21), and the sealing portion (22) is movably plugged into the inner bottom of the annular cavity.

6. The waterproof end cover of a transformer according to claim 5, characterized in that: An annular sealing rubber ring (23) is provided between the outer ring of the sealing portion (22) and the annular cavity.

7. The transformer waterproof end cover according to claim 5, characterized in that: A positioning ring (24) is integrally formed on the upper surface of the sealing portion (22), and the positioning ring (24) is movably sleeved on the outer surface of the bottom end of the inner heat-conducting hollow tube (14).

8. The waterproof end cover of a transformer according to claim 7, characterized in that: A reverse collar (25) is integrally formed on the inner side of the positioning ring (24); a sealing reverse interface (17) is provided at the inner bottom end of the inner heat-conducting hollow tube (14); the reverse collar (25) is movably inserted into the sealing reverse interface (17); and the inner ring of the reverse collar (25) has the same diameter as the inner ring of the inner heat-conducting hollow tube (14).

9. The transformer waterproof end cover according to claim 1, characterized in that: The inner heat-conducting shock-absorbing component (16) comprises an outer heat-conducting rubber layer (161) and an inner heat-conducting rubber layer (162), wherein the outer heat-conducting rubber layer (161) is adhered to the inner wall of the outer covering shell (11), and the inner heat-conducting rubber layer (162) is adhered to the outer ring surface of the inner heat-conducting hollow tube (14).

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