Heat dissipation module of power transformer

Abstract

The utility model relates to the field of power transformers, and discloses a power transformer heat dissipation module which is characterized in that a heat dissipation assembly is mounted on the surface of a transformer body; the heat dissipation module comprises an upper installation clamping groove fixed to the transformer body and a lower installation clamping groove fixed to the transformer body and longitudinally and symmetrically distributed with the upper installation clamping groove, and a heat conduction plate is assembled between the upper installation clamping groove and the lower installation clamping groove in a clamped mode. A plurality of positioning grooves are formed in the heat conducting plate at equal intervals, positioning strips are installed in the positioning grooves in a clamped mode, and cooling fins are fixedly installed on the positioning strips; the heat conduction plate is provided with a limiting assembly for limiting the assembly position of the heat dissipation fins. When local fins in the heat dissipation module go wrong, the positions of the heat dissipation fins can be loosened through the limiting assemblies, the heat dissipation fins can be detached for replacement, and the maintenance and replacement cost of the heat dissipation module is reduced.

Description

Technical Field

[0001] The utility model relates to the field of power transformers, and specifically relates to a heat dissipation module for a power transformer. Background Technique

[0002] Power transformers are widely used in power systems. In the power transmission system, power transformers step down the high-voltage current in the transmission line into a low-voltage current suitable for use in the distribution system. When a power transformer is operating, it will generate a certain amount of heat, and the transformer dissipates heat outward through the heat dissipation fins installed on its surface.

[0003] Chinese Patent CN215578078U discloses a transformer with a detachable heat dissipation structure, including a transformer body, a heat dissipation mechanism, and a locking mechanism for fixing the heat dissipation mechanism. The heat dissipation mechanism includes multiple groups of heat dissipation fins. There are slots on the outer wall of the transformer body. The heat dissipation fins are inserted into the slots through the inserts provided at the bottom. The locking mechanism includes locking ears and self-locking rods. The number of locking ears is two, which are respectively located on the left and right sides of the heat dissipation mechanism. The self-locking rod sequentially passes through the locking ears and the heat dissipation fins in a direction perpendicular to the heat dissipation fins to fix the heat dissipation fins. Locking holes for the self-locking rod to pass through are correspondingly provided on both the locking ears and the heat dissipation fins. The disassembly and assembly of the transformer heat dissipation structure are convenient, which solves the problem of inconvenient later replacement and cleaning.

[0004] When the fins used for heat dissipation on a power transformer are impacted, corroded, worn, etc., deformations and perforations will occur. After being damaged, the heat dissipation effect of the heat dissipation fins is reduced. The heat dissipation modules on some power transformers can be disassembled and replaced, but when one or some local heat dissipation fins have problems, the cost of replacing the entire heat dissipation module is relatively high. Especially for power transformers used outdoors, the probability of local heat dissipation fins having problems is high, and the method of replacing the entire heat dissipation module greatly increases the cost of the safe use of outdoor power transformers. In addition, the heat dissipation modules of some power transformers only dissipate heat through heat dissipation fins. The spacing between the heat dissipation fins affects heat dissipation, and the speed of heat dissipation in the middle channel of the heat dissipation fins affects the heat dissipation effect of the heat dissipation module. Summary of the Utility Model

[0005] In view of the above problems, a heat dissipation module for a power transformer is provided. The position of the heat dissipation fins installed in the heat conduction plate is limited by a limiting component, which facilitates quick disassembly and replacement when a single heat dissipation fin has problems, and solves the problems that when the fins used for heat dissipation on a power transformer are impacted, corroded, worn, etc., deformations and perforations will occur, and after being damaged, the heat dissipation effect of the heat dissipation fins is reduced. The heat dissipation modules on some power transformers can be disassembled and replaced, but when one or some local heat dissipation fins have problems, the cost of replacing the entire heat dissipation module is relatively high, etc.

[0006] To solve the problems of the prior art, the utility model provides a heat dissipation module for a power transformer. The heat dissipation component is installed on the surface of the transformer body. The heat dissipation module includes an upper installation slot fixed on the transformer body, a lower installation slot fixed on the transformer body and longitudinally symmetrically distributed with the upper installation slot, and a heat conduction plate is snap-fitted between the upper installation slot and the lower installation slot; a plurality of positioning grooves are equidistantly arranged on the heat conduction plate, positioning strips are snap-fitted in the positioning grooves, and heat dissipation fins are fixedly installed on the positioning strips; a limiting component for limiting the assembly position of the heat dissipation fins is arranged on the heat conduction plate.

[0007] Preferably, the limiting component includes an upper limiting groove opened above the heat dissipation fin, and a lower limiting groove is opened below the heat dissipation fin; a support frame is fixedly installed on the heat conduction plate, a straight air duct is fixedly installed on the support frame, and the straight air duct is snap-fitted with the lower limiting groove on the heat dissipation fin; a telescopic component is installed on the heat conduction plate, and a limiting tube is fixedly installed at the telescopic end of the telescopic component, and the limiting tube is snap-fitted with the upper limiting groove on the heat dissipation fin.

[0008] Preferably, the telescopic component includes a hollow seat fixed on the heat conduction plate, a lateral clamping groove is opened on the hollow seat, a telescopic support rod is telescopically connected in the hollow seat, the telescopic support rod is fixed on the limiting tube, and an elastic buckle is fixedly installed on the telescopic support rod, and the elastic buckle is snap-fitted with the lateral clamping groove.

[0009] Preferably, through grooves are equidistantly arranged on the upper installation slot, and the positions of the through grooves correspond to the positions of the positioning grooves.

[0010] Preferably, air outlets are equidistantly arranged on the straight air duct, and the air outlets are arranged at the middle positions between two adjacent heat dissipation fins.

[0011] Preferably, a conduction component for connecting the wind power transmission of two straight air ducts is arranged on the support frame, and the conduction component can strengthen the assembly between the heat conduction plate and the upper installation slot and the lower installation slot.

[0012] Preferably, the conduction component includes an external thread ring fixed on the support frame and communicated with the straight air duct, a cutting groove is opened on the external thread ring, a curved air duct is connected between two vertically distributed external thread rings, an external thread structure is opened on the curved air duct, an internal thread step ring is coaxially sleeved on the curved air duct, the internal thread step ring is threadedly assembled with the external thread structure on the curved air duct, and the internal thread step ring is threadedly assembled with the external thread ring.

[0013] The beneficial effects of the utility model compared with the prior art are:

[0014] 1. In the present utility model, a limiting component is provided to define the position of the heat dissipation fins installed on the heat conduction plate. The heat dissipation fins are installed on the heat conduction plate by snap-fitting of the positioning strips and positioning grooves, and the limiting tube and the straight air duct in the limiting component are respectively snap-fitted and defined at the upper and lower positions of the heat dissipation fins. When a local heat dissipation fin has a problem, the telescopic component is loosened to move the limiting tube outwards, unlocking the limiting structure above the heat dissipation fin, and moving the heat dissipation fin upwards can remove it from the heat conduction plate, reducing the cost of replacing the heat dissipation fin.

[0015] 2. In the present utility model, a conduction component is provided to connect adjacent straight air ducts. The straight air ducts are correspondingly located below the heat dissipation fins, and the air outlets on the straight air ducts are arranged at the middle positions between adjacent heat dissipation fins. The straight air ducts connected through the conduction component can output wind between adjacent heat dissipation fins through the air outlets, accelerating the gas flow in the channels between the heat dissipation fins, improving the heat dissipation effect of the power transformer heat dissipation module, and the conduction component connected between the straight air ducts can reinforce the installation of the heat conduction plate on the transformer body, maintaining the stability of the heat dissipation module installed on the transformer body. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the transformer body of a power transformer heat dissipation module.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the heat dissipation fins of a power transformer heat dissipation module.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the upper installation slot of a power transformer heat dissipation module.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the straight air duct of a power transformer heat dissipation module.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the limiting tube of a power transformer heat dissipation module.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the elastic buckle of a power transformer heat dissipation module.

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the air outlet of a power transformer heat dissipation module.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the conduction component of a power transformer heat dissipation module. [[ID=3…]]

[0024] Figure 9 It is a three-dimensional structural schematic diagram of the curved air duct of a power transformer heat dissipation module.

[0025] Figure 10 It is a schematic three-dimensional structure diagram of an external thread ring of a heat dissipation module for a power transformer.

[0026] Figure 11 It is a schematic cross-sectional structure diagram of an internal thread stepped ring of a heat dissipation module for a power transformer.

[0027] The reference numerals in the figure are:

[0028] 1. Transformer body; 21. Upper installation slot; 211. Through slot; 22. Lower installation slot; 23. Heat conduction plate; 31. Positioning slot; 32. Positioning strip; 33. Heat dissipation fin; 4. Limiting component; 41. Upper limiting slot; 42. Lower limiting slot; 43. Support frame; 44. Straight air duct; 441. Air outlet; 45. Telescopic component; 451. Hollow seat; 452. Telescopic support rod; 453. Elastic buckle; 454. Lateral slot; 46. Limiting tube; 5. Conduction component; 51. External thread ring; 52. Cutting slot; 53. Curved air duct; 54. External thread structure; 55. Internal thread stepped ring. Specific embodiments

[0029] To further understand the features, technical means, specific purposes, and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] See Figures 1-7 As shown, for a heat dissipation module of a power transformer, the heat dissipation component is installed on the surface of the transformer body 1. The heat dissipation module includes an upper installation slot 21 fixed on the transformer body 1, a lower installation slot 22 fixed on the transformer body 1 and longitudinally symmetrically distributed with the upper installation slot 21, and a heat conduction plate 23 is snap-fitted between the upper installation slot 21 and the lower installation slot 22; a plurality of positioning slots 31 are equidistantly arranged on the heat conduction plate 23, a positioning strip 32 is snap-fitted in the positioning slot 31, and a heat dissipation fin 33 is fixedly installed on the positioning strip 32; a limiting component 4 for limiting the assembly position of the heat dissipation fin 33 is arranged on the heat conduction plate 23; heat conduction plates 23 and heat dissipation fins 33 are installed on the left, right, and front sides of the transformer body 1 for heat dissipation.

[0031] Place the heat conduction plate 23 between the upper installation slot 21 and the lower installation slot 22. Push the heat conduction plate 23 to snap it into the space between the upper installation slot 21 and the lower installation slot 22. The heat conduction plate 23 absorbs the heat on the surface of the transformer body 1 and transfers the heat to the heat dissipation fins 33 for outward dissipation. The transformer body 1 is installed for outdoor use, and the outdoor environment is likely to damage the heat dissipation fins 33. When a local heat dissipation fin 33 is damaged, first loosen the limit component 4, move the heat dissipation fins 33 upward. The positioning strip 32 fixed on the heat dissipation fins 33 is snapped into the positioning groove 31 and moves upward, quickly disassembling the heat dissipation fins 33 from the heat conduction plate 23 so as to replace them with new heat dissipation fins 33 and assemble them on the heat conduction plate 23.

[0032] See Figures 2-7 As shown, the limit component 4 includes an upper limit groove 41 opened above the heat dissipation fins 33, and a lower limit groove 42 is opened below the heat dissipation fins 33; a support frame 43 is fixedly installed on the heat conduction plate 23, a linear air duct 44 is fixedly installed on the support frame 43, and the linear air duct 44 is snap-fitted with the lower limit groove 42 on the heat dissipation fins 33; a telescopic component 45 is installed on the heat conduction plate 23, and a limit tube 46 is fixedly installed at the telescopic end of the telescopic component 45, and the limit tube 46 is snap-fitted with the upper limit groove 41 on the heat dissipation fins 33.

[0033] The limit tube 46 is snap-fitted in the upper limit groove 41 of the heat dissipation fins 33, and the linear air duct 44 is snap-fitted in the lower limit groove 42 of the heat dissipation fins 33. The heat dissipation fins 33 are stably assembled on the heat conduction plate 23 through the upper and lower snap-fitting structures. When it is necessary to disassemble the heat dissipation fins 33, move the limit tube 46 outward through the telescopic component 45 so that the limit tube 46 is separated from the heat dissipation fins 33, so as to move the heat dissipation fins 33 upward and disassemble them from the heat conduction plate 23.

[0034] See Figure 5 and Figure 6 As shown, the telescopic component 45 includes a hollow seat 451 fixed on the heat conduction plate 23, a lateral card slot 454 is opened on the hollow seat 451, a telescopic support rod 452 is telescopically connected in the hollow seat 451, the telescopic support rod 452 is fixed on the limit tube 46, and an elastic buckle 453 is fixedly installed on the telescopic support rod 452, and the elastic buckle 453 is snap-fitted with the lateral card slot 454.

[0035] When the telescopic rod 452 is moved towards the inner side of the hollow seat 451, the elastic buckle 453 on the telescopic rod 452 is engaged and limited in the lateral slot 454 opened on the side of the hollow seat 451. Through the engagement structure, the position where the limiting tube 46 is pressed on the heat dissipation fin 33 can be limited, thereby limiting the position where the heat dissipation fin 33 is assembled on the heat conduction plate 23. When the telescopic rod 452 is moved towards the outer side of the hollow seat 451, the elastic buckle 453 elastically contracts in the hollow seat 451, and the telescopic rod 452 pushes the limiting tube 46 to move away from the heat dissipation fin 33, loosening the position where the heat dissipation fin 33 is assembled on the heat conduction plate 23.

[0036] See Figures 3-5 As shown, through slots 211 are equally spaced on the upper mounting slot 21, and the positions of the through slots 211 correspond to the positions of the positioning slots 31.

[0037] The through slots 211 opened on the upper mounting slot 21 facilitate the removal of the heat dissipation fin 33, so that the heat dissipation fin 33 can move upward and separate from the heat conduction plate 23.

[0038] See Figure 7 As shown, air outlets 441 are equally spaced on the straight air duct 44, and the air outlets 441 are arranged at the middle positions between two adjacent heat dissipation fins 33; a device for generating wind is installed at the port of the straight air duct 44 on one side of the transformer body 1 to transmit wind into the straight air duct 44 for auxiliary cooling.

[0039] The wind transmitted in the straight air duct 44 is discharged outward through the air outlets 441, and the wind blown out by the air outlets 441 is distributed between adjacent heat dissipation fins 33, increasing the gas flow and accelerating the dissipation of heat from the heat dissipation fins 33 to the outside.

[0040] See Figure 1 , Figures 8-11 As shown, a conduction component 5 for connecting the wind transmission of two straight air ducts 44 is arranged on the support frame 43, and the conduction component 5 can strengthen the assembly between the heat conduction plate 23 and the upper mounting slot 21 and the lower mounting slot 22.

[0041] The conduction component 5 can connect and penetrate the straight air ducts 44 on three sides of the transformer body 1 to facilitate the flow transmission of the wind in the straight air ducts 44. And after the three straight air ducts 44 are connected by the conduction component 5, the stability of the assembly of the heat conduction plate 23 on the transformer body 1 can be improved.

[0042] See Figures 8-11As shown, the conduction component 5 includes an external thread ring 51 fixed on the support frame 43 and connected to the straight air duct 44 in a penetrating manner. A cutting groove 52 is provided on the external thread ring 51. A curved air duct 53 is connected between two vertically distributed external thread rings 51. An external thread structure 54 is provided on the curved air duct 53. An internal thread step ring 55 is coaxially sleeved on the curved air duct 53. The internal thread step ring 55 is threadedly assembled with the external thread structure 54 on the curved air duct 53, and the internal thread step ring 55 is threadedly assembled with the external thread ring 51;

[0043] Position the curved air duct 53 between two vertically distributed external thread rings 51. The two ends of the curved air duct 53 are respectively snapped into the two external thread rings 51. Rotate the internal thread step ring 55 outside the curved air duct 53. The internal thread step ring 55 is threadedly assembled with the external thread structure 54 outside the curved air duct 53. Through the thread structure, the internal thread step ring 55 moves towards the external thread ring 51. When the internal thread step ring 55 moves to the outside of the external thread ring 51, it is threadedly assembled with the thread structure outside the external thread ring 51. After the internal thread step ring 55 is completely rotated to the outside of the external thread ring 51, the curved air duct 53 is stably installed on the external thread ring 51. Three groups of straight air ducts 44 are connected to two groups of curved air ducts 53 in a penetrating manner to control the wind power transmission.

[0044] The above embodiments only represent one or several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heat dissipation module for a power transformer, wherein the heat dissipation component is installed on the surface of the transformer body (1), and is characterized in that: The heat dissipation module includes an upper mounting slot (21) fixed on the transformer body (1), a lower mounting slot (22) fixed on the transformer body (1) and longitudinally symmetrically distributed with the upper mounting slot (21), and a heat conduction plate (23) is snap-fitted between the upper mounting slot (21) and the lower mounting slot (22); A plurality of positioning grooves (31) are equidistantly arranged on the heat conduction plate (23), a positioning strip (32) is snap-fitted in the positioning groove (31), and heat dissipation fins (33) are fixedly installed on the positioning strip (32); A limiting component (4) for limiting the assembly position of the heat dissipation fins (33) is arranged on the heat conduction plate (23).

2. The heat dissipation module of a power transformer according to claim 1, wherein: The limiting component (4) includes an upper limiting groove (41) opened above the heat dissipation fin (33), and a lower limiting groove (42) is opened below the heat dissipation fin (33); A support frame (43) is fixedly installed on the heat conduction plate (23), a straight air duct (44) is fixedly installed on the support frame (43), and the straight air duct (44) is snap-fitted with the lower limiting groove (42) on the heat dissipation fin (33); A telescopic component (45) is installed on the heat conduction plate (23), a limiting tube (46) is fixedly installed at the telescopic end of the telescopic component (45), and the limiting tube (46) is snap-fitted with the upper limiting groove (41) on the heat dissipation fin (33).

3. The heat dissipation module of a power transformer according to claim 2, wherein: The telescopic component (45) includes a hollow seat (451) fixed on the heat conduction plate (23), a lateral card slot (454) is opened on the hollow seat (451), a telescopic support rod (452) is telescopically connected in the hollow seat (451), the telescopic support rod (452) is fixed on the limiting tube (46), and an elastic buckle (453) is fixedly installed on the telescopic support rod (452), and the elastic buckle (453) is snap-fitted with the lateral card slot (454).

4. The heat dissipation module of a power transformer according to claim 1, wherein: Penetrating grooves (211) are equidistantly arranged on the upper mounting slot (21), and the positions of the penetrating grooves (211) correspond to the positions of the positioning grooves (31).

5. The heat dissipation module of a power transformer according to claim 2, characterized in that: Air outlets (441) are equidistantly arranged on the straight air duct (44), and the air outlets (441) are arranged at the middle positions between two adjacent heat dissipation fins (33).

6. The heat dissipation module of a power transformer according to claim 2, characterized in that: A conduction component (5) for connecting and transmitting the wind force of two straight air ducts (44) is arranged on the support frame (43), and the conduction component (5) can strengthen the assembly between the heat conduction plate (23) and the upper mounting slot (21) and the lower mounting slot (22).

7. The heat dissipation module of a power transformer according to claim 6, characterized in that: The conduction component (5) includes an external thread ring (51) fixed on the support frame (43) and in through connection with the straight air duct (44), a cutting groove (52) is opened on the external thread ring (51), a curved air duct (53) is connected between two vertically distributed external thread rings (51), an external thread structure (54) is opened on the curved air duct (53), an internal thread step ring (55) is coaxially sleeved on the curved air duct (53), the internal thread step ring (55) is in threaded assembly with the external thread structure (54) on the curved air duct (53), and the internal thread step ring (55) is in threaded assembly with the external thread ring (51).

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