Annular transformer with good heat dissipation performance

Abstract

The utility model relates to the technical field of transformers, in particular to an annular transformer with good heat dissipation performance, which comprises a transformer body provided with a central inner hole and further comprises a mounting base, the center of the mounting base extends upwards to form a limiting column sleeve, and the limiting column sleeve penetrates through the central inner hole of the transformer body from bottom to top. The mounting base abuts against the bottom of a center inner hole of the transformer body, and a filling cavity is formed by the outer sleeve face of the limiting column sleeve and the inner hole face of the center inner hole of the transformer body. The filling cavity is sequentially filled with a first filling layer, a second filling layer and a third filling layer from bottom to top, each of the first filling layer and the third filling layer comprises an epoxy resin body, the second filling layer comprises an epoxy resin body and fishpond stones, and the fishpond stones are uniformly distributed in the epoxy resin bodies. According to the utility model, the problem that the epoxy material in the inner hole is easy to crack and even fall off from the transformer when the inner hole of the existing transformer is in a high-temperature environment can be solved, so that the service life of the transformer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a toroidal transformer with good heat dissipation performance. Background Art

[0002] The transformer is an indispensable component in the power system. It is based on the principle of electromagnetic induction and achieves the rise and fall of AC voltage by changing the magnetic field strength. Its core components include primary coil, secondary coil and iron core. The precise coordination and coordinated operation of these components enable the transformer to efficiently complete the functions of voltage conversion, current conversion, impedance conversion, isolation and voltage stabilization.

[0003] With the rapid development of modern science and technology, transformers have been widely used in many fields. Whether it is computers, medical equipment, telecommunications, instruments, lighting and other fields, transformers play a vital role. They not only ensure the stable supply of electricity, but also improve the operating efficiency of equipment and promote the progress of science and technology.

[0004] In order to meet the needs of different installations, the control of size and performance is particularly critical in the manufacturing process of modern transformers. The main purpose of size control is to ensure that the transformer matches the installation requirements and to avoid affecting the normal operation of components due to improper size. At the same time, performance control is also an important means to ensure the safety of product use. In engineering, size and performance are regarded as important thresholds reserved by pre-station engineering for post-station engineering, and are also pre-buried facilities for post-station interface engineering, which are of great significance to the stable operation of the entire system.

[0005] In the production process of toroidal transformers, epoxy potting of the inner hole is a crucial process. Potting can not only improve the insulation performance of the transformer, but also effectively prevent erosion from the external environment. However, the traditional potting method is to simply fill the inner hole completely with epoxy material, which has certain hidden dangers in high temperature environments. When the toroidal transformer works in a harsh high temperature environment, although the customer's overall chassis is equipped with a heat dissipation device, the inner hole of the transformer, which is the working core of the whole machine, will still accumulate a lot of heat. This heat is difficult to dissipate quickly, which may cause the risk of cracking or even falling off between the epoxy material and the transformer, seriously affecting the normal use of the product. Utility Model Content

[0006] The utility model aims to provide a toroidal transformer with good heat dissipation performance to solve the problem that the epoxy material in the inner hole of the existing transformer is easy to crack or even fall off from the transformer under high temperature environment, thereby extending the service life of the transformer.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A toroidal transformer with good heat dissipation performance comprises a transformer body, wherein the transformer body is provided with a central inner hole, and is characterized in that it also comprises a mounting assembly;

[0009] The mounting assembly comprises a mounting base, the center of which extends upward to form a limiting column sleeve;

[0010] The limiting column sleeve passes through the central inner hole of the transformer body from bottom to top, the mounting base abuts against the bottom of the central inner hole of the transformer body, and the outer surface of the limiting column sleeve and the inner surface of the central inner hole of the transformer body form a filling cavity;

[0011] The filling cavity is filled with a first filling layer, a second filling layer and a third filling layer in sequence from bottom to top, wherein the first filling layer and the third filling layer both include an epoxy resin body, the second filling layer includes an epoxy resin body and fish pond stones, and the fish pond stones are evenly distributed in the epoxy resin body.

[0012] Preferably, the diameter of the fish pond stone in the second filling layer is -mm.

[0013] Preferably, the ratio of the fish pond stone to the epoxy resin body in the second filling layer is 1:1.

[0014] Preferably, a filling thickness H1 of the first filling layer is one third of a thickness H of the filling cavity.

[0015] Preferably, the filling thickness H2 of the third filling layer is 15-20 mm.

[0016] Preferably, the mounting assembly comprises an adjusting screw and an adjusting nut;

[0017] The outer column surface of the upper end of the limiting column sleeve protrudes outward to form a limiting installation sleeve, and the adjusting nut is installed on the limiting installation sleeve;

[0018] One end of the adjusting screw rod is penetrated by the limiting column sleeve from bottom to top, and one end of the adjusting screw rod is threadedly connected with the adjusting nut.

[0019] Preferably, the mounting assembly further comprises a lower annular gasket and an upper annular gasket;

[0020] The lower annular gasket is sleeved on the lower end of the limiting column sleeve, and the upper end surface of the lower annular gasket abuts against the bottom of the central inner hole of the transformer body;

[0021] The upper annular gasket is sleeved on one end of the limiting column sleeve that passes through the filling cavity, and the lower end surface of the upper annular gasket abuts against the upper surface of the third filling layer.

[0022] One of the above technical solutions has the following beneficial effects: It is known that epoxy resin body has good thermal conductivity and heat dissipation, and is resistant to high and low temperatures, has good thermal stability, and has good heat dissipation of fish pond stone. Therefore, the first filling layer of the filling cavity includes epoxy resin body, which is used for primer and prevents the epoxy resin body from leaking from the gap between the filling cavity and the mounting base. The second filling layer of the filling cavity includes epoxy resin body and fish pond stone, and the fish pond stone is evenly distributed in the epoxy resin body. Furthermore, since the second filling layer with fish pond stone is located in the middle section of the filling cavity, the heat generated in the central inner hole of the toroidal transformer can be effectively dissipated to the outside through the mounting assembly to reduce the temperature of the central inner hole of the toroidal transformer and improve the heat dissipation performance of the transformer. The third filling layer of the filling cavity includes epoxy resin body, which is used to cover the second filling layer and ensure that the epoxy resin body completely penetrates through the fish pond stone to the bottom of the filling cavity, and is also used for surface potting to ensure that the first filling layer and the second filling layer are completely covered to achieve a protective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a toroidal transformer with good heat dissipation performance in the utility model;

[0024] Figure 2 It is a schematic diagram of an explosion of the utility model before a toroidal transformer with good heat dissipation performance is filled;

[0025] Figure 3 It is a cross-sectional schematic diagram of the utility model after being filled with a toroidal transformer having good heat dissipation performance;

[0026] In the accompanying drawings: transformer body 1, mounting assembly 2, filling cavity 3, central inner hole 10, mounting base 21, limiting column sleeve 22, adjusting screw 23, adjusting nut 24, limiting mounting sleeve 25, lower annular gasket 26, upper annular gasket 27, first filling layer 31, second filling layer 32, third filling layer 33, fish pond stone 321. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-3 As shown, a toroidal transformer with good heat dissipation performance comprises a transformer body 1, wherein the transformer body 1 is provided with a central inner hole 10, and is characterized in that it also comprises a mounting assembly 2;

[0032] The mounting assembly 2 includes a mounting base 21, the center of which extends upward to form a limiting column sleeve 22;

[0033] The limiting column sleeve 22 penetrates the central inner hole 10 of the transformer body 1 from bottom to top, the mounting base 21 abuts against the bottom of the central inner hole 10 of the transformer body 1, and the outer surface of the limiting column sleeve 22 and the inner surface of the central inner hole 10 of the transformer body 1 form a filling cavity 3;

[0034] The filling cavity 3 is filled with a first filling layer 31, a second filling layer 32 and a third filling layer 33 from bottom to top, wherein the first filling layer 31 and the third filling layer 33 both include an epoxy resin body, and the second filling layer 32 includes an epoxy resin body and fish pond stone 321, and the fish pond stone 321 is evenly distributed in the epoxy resin body.

[0035] It is known that epoxy resin body has good thermal conductivity and heat dissipation, and is resistant to high and low temperatures, and has good thermal stability. The fish pond stone 321 has good heat dissipation. Therefore, the first filling layer 31 of the filling cavity 3 includes an epoxy resin body, which is used for primer and prevents the epoxy resin body from leaking from the gap between the filling cavity 3 and the mounting base 21. The second filling layer 32 of the filling cavity 3 includes an epoxy resin body and a fish pond stone 321, and the fish pond stone 321 is evenly distributed in the epoxy resin body. Furthermore, since the second filling layer 32 with the fish pond stone 321 is located in the middle section of the filling cavity 3, the heat generated in the central inner hole 10 of the toroidal transformer can be effectively dissipated to the outside through the mounting assembly 2 quickly, so as to reduce the temperature of the central inner hole 10 of the toroidal transformer and improve the heat dissipation performance of the transformer. The third filling layer 33 of the filling cavity 3 includes an epoxy resin body, which is used to cover the second filling layer 32 and ensure that the epoxy resin body completely penetrates through the fish pond stone 321 to the bottom of the filling cavity 3, and is also used for surface potting to ensure that the first filling layer 31 and the second filling layer 32 are completely covered to achieve a protective effect.

[0036] In summary, the utility model improves the existing method of encapsulating the central inner hole 10 of the transformer body 1 with only a single epoxy resin body filling layer, and sequentially forms the first filling layer 31, the second filling layer 32 and the third filling layer 33 by layered encapsulation, ensuring the close bonding between each layer and the overall curing effect. Among them, the epoxy resin body in the second filling layer 32 is optimized and added with fish pond stone 321, which enhances the heat dissipation performance and reliability of the toroidal transformer.

[0037] Further explanation, the diameter of the fish pond stone 321 in the second filling layer 32 is 5-7 mm. In the case where the filling cavity 3 is generally small, the distribution density and position of the fish pond stone 321 are carefully designed to ensure that the fish pond stone 321 is evenly distributed in the epoxy resin body and maximize the thermal conductivity. In addition, the epoxy resin body of the second filling layer 32 can fully penetrate into the first filling layer 31 below, and form a whole with the epoxy resin body of the first filling layer 31 after curing, achieving a good penetration effect, thereby enhancing the sealing and stability of the central inner hole 10 of the transformer body 1.

[0038] To further explain, the ratio of the fish pond stone 321 and the epoxy resin body in the second filling layer 32 is 1:1.

[0039] First, the ratio of 1:1 means that the fish pond stone 321 and the epoxy resin body in the second filling layer 32 are balanced in quantity, ensuring that the fish pond stone 321 is evenly distributed in the epoxy resin body, thereby effectively improving the thermal conductivity of the inner hole. This balanced ratio helps to maximize the thermal conductivity of the fish pond stone 321 while maintaining the stability and structural strength of the epoxy resin body.

[0040] Secondly, the 1:1 ratio helps control the overall density and hardness of the second filling layer 32. An appropriate amount of fish pond stone 321 can increase the hardness of the second filling layer 32, while an appropriate amount of epoxy resin can ensure the toughness and sealing of the second filling layer 32. This ratio enables the second filling layer 32 to support and fix the fish pond stone 321 while maintaining a certain elasticity and impact resistance.

[0041] In addition, by controlling the ratio of the fish pond stone 321 and the epoxy resin body, the thermal expansion coefficient of the second filling layer 32 can also be adjusted. The thermal expansion coefficients of the fish pond stone 321 and the epoxy resin body are different, and a reasonable ratio helps to reduce the thermal stress caused by temperature changes, thereby improving the stability and reliability of the entire toroidal transformer.

[0042] Finally, this ratio also takes into account the factors of cost and production efficiency. By optimizing the ratio, production costs can be reduced and production efficiency can be improved while ensuring performance.

[0043] In summary, the design of a 1:1 ratio of the fish pond stone 321 to the epoxy resin body in the second filling layer 32 not only ensures the thermal conductivity of the inner hole, but also takes into account the stability, hardness, toughness and cost-effectiveness of the filling layer, which is a more reasonable design scheme.

[0044] To further explain, the filling thickness H1 of the first filling layer 31 is one third of the thickness H of the filling cavity 3 .

[0045] Firstly, the filling thickness design of the first filling layer 31 ensures that the first filling layer 31 can evenly cover the bottom of the inner hole, providing a stable support and foundation for subsequent filling layers.

[0046] Secondly, it also helps to balance the thermal conductivity of the inner hole. As a part of the inner hole, the first filling layer 31 has a reasonable thickness design and can work together with other filling layers to achieve a good thermal conductivity effect.

[0047] In summary, the present application can ensure that the toroidal transformer can maintain stable performance and a long service life during operation by reasonably controlling the thickness of the first filling layer 31 .

[0048] To further explain, the filling thickness H2 of the third filling layer 33 is 15-20 mm.

[0049] First, the filling thickness design of the third filling layer 33 ensures that the fish pond stone 321 can be completely covered by the epoxy resin body, thereby effectively preventing the fish pond stone 321 from falling off or shifting during subsequent use. As a heat-conducting medium, the stability of the position of the fish pond stone 321 is crucial to the heat dissipation performance of the toroidal transformer.

[0050] In summary, the present application makes the entire potting process more orderly by reasonably controlling the filling thickness of the third filling layer 33, which is beneficial to ensuring the potting quality and efficiency.

[0051] To further illustrate, the mounting assembly 2 includes an adjusting screw 23 and an adjusting nut 24;

[0052] The outer cylindrical surface of the upper end of the limiting column sleeve 22 protrudes outward to form a limiting installation sleeve 25, and the adjusting nut 24 is installed on the limiting installation sleeve 25;

[0053] One end of the adjusting screw 23 passes through the limiting column sleeve 22 from bottom to top, and one end of the adjusting screw 23 is threadedly connected with the adjusting nut 24 .

[0054] In order to meet the needs of different equipment and installation space, the transformer needs to adopt a flexible and changeable installation method. By designing an installation component 2 including an adjusting screw 23 and an adjusting nut 24, the position and fixing method of the transformer can be easily adjusted to adapt to different installation environments and space limitations. When the position needs to be adjusted, the adjusting nut 24 can be rotated to move the adjusting screw 23 up and down in the limiting column sleeve 22. After reaching the desired position, the adjusting nut 24 can be rotated again to make it tightly connected with the adjusting screw 23, thereby achieving fixation. This design has a simple structure, is easy to operate, and can quickly adjust and fix the position. And because the limiting installation sleeve 25 is the part that protrudes outward from the outer column surface at the upper end of the limiting column sleeve 22, the adjusting nut 24 can be firmly installed here.

[0055] To further illustrate, the mounting assembly 2 further includes a lower annular gasket 26 and an upper annular gasket 27;

[0056] The lower annular gasket 26 is sleeved on the lower end of the limiting column sleeve 22, and the upper end surface of the lower annular gasket 26 abuts against the bottom of the central inner hole 10 of the transformer body 1;

[0057] The upper annular gasket 27 is sleeved on one end of the limiting column sleeve 22 passing through the filling cavity 3 , and the lower end surface of the upper annular gasket 27 abuts against the upper surface of the third filling layer 33 .

[0058] Through the design of the lower annular gasket 26, the transformer body 1 can be placed more stably in a predetermined position during the installation process, ensuring the accuracy of the subsequent potting and filling. Furthermore, both the lower annular gasket 26 and the upper annular gasket 27 have good sealing performance. The lower annular gasket 26 abuts against the bottom of the central inner hole 10 of the transformer body 1, which can effectively prevent the leakage of the filler when potting and filling the filling cavity 3. The upper annular gasket 27 can effectively prevent liquid, gas or dust from entering the central inner hole of the transformer body, thereby protecting the electrical components inside the transformer from the external environment.

[0059] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A toroidal transformer with good heat dissipation performance, comprising a transformer body (1), wherein the transformer body (1) is provided with a central inner hole (10), characterized in that: Also included is a mounting assembly (2); The mounting assembly (2) comprises a mounting base (21), the center of the mounting base (21) extending upward to form a limiting column sleeve (22); The limiting column sleeve (22) penetrates the central inner hole (10) of the transformer body (1) from bottom to top, the mounting base (21) abuts against the bottom of the central inner hole (10) of the transformer body (1), and the outer surface of the limiting column sleeve (22) and the inner surface of the central inner hole (10) of the transformer body (1) form a filling cavity (3); The filling cavity (3) is filled with a first filling layer (31), a second filling layer (32) and a third filling layer (33) in sequence from bottom to top, wherein the first filling layer (31) and the third filling layer (33) both include an epoxy resin body, and the second filling layer (32) includes an epoxy resin body and fish pond stones (321), and the fish pond stones (321) are evenly distributed in the epoxy resin body.

2. A toroidal transformer with good heat dissipation performance according to claim 1, characterized in that: The diameter of the fish pond stone (321) in the second filling layer (32) is 5-7 mm.

3. A toroidal transformer with good heat dissipation performance according to claim 2, characterized in that: The ratio of the fish pond stone (321) to the epoxy resin body in the second filling layer (32) is 1:

1.

4. A toroidal transformer with good heat dissipation performance according to claim 1, characterized in that: The filling thickness H1 of the first filling layer (31) is one third of the thickness H of the filling cavity (3).

5. The toroidal transformer with good heat dissipation performance according to claim 1, characterized in that: The filling thickness H2 of the third filling layer (33) is 15-20 mm.

6. A toroidal transformer with good heat dissipation performance according to claim 1, characterized in that: The mounting assembly (2) comprises an adjusting screw (23) and an adjusting nut (24); The outer cylindrical surface of the upper end of the limiting cylindrical sleeve (22) protrudes outward to form a limiting mounting sleeve (25), and the adjusting nut (24) is mounted on the limiting mounting sleeve (25); One end of the adjusting screw rod (23) passes through the limiting column sleeve (22) from bottom to top, and one end of the adjusting screw rod (23) is threadedly connected to the adjusting nut (24).

7. A toroidal transformer with good heat dissipation performance according to claim 1, characterized in that: The mounting assembly (2) further comprises a lower annular gasket (26) and an upper annular gasket (27); The lower annular gasket (26) is sleeved on the lower end of the limiting column sleeve (22), and the upper end surface of the lower annular gasket (26) abuts against the bottom of the central inner hole (10) of the transformer body (1); The upper annular gasket (27) is sleeved on one end of the limiting column sleeve (22) passing through the filling cavity (3), and the lower end surface of the upper annular gasket (27) abuts against the upper surface of the third filling layer (33).

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