A type of air-cooled dry-type transformer

Abstract

This utility model discloses an air-cooled dry-type transformer, including a base and a winding structure disposed on the upper end of the base, the winding structure being used to improve the heat dissipation capacity of the winding; it also includes a heat dissipation component disposed on the upper part of the base, the heat dissipation component being used to improve the heat dissipation effect, and a cover plate being provided on the upper end of the support frame. This utility model belongs to the field of transformer heat dissipation technology, specifically an air-cooled dry-type transformer.

Description

Technical Field

[0001] This utility model belongs to the field of transformer heat dissipation technology, and particularly relates to an air-cooled dry-type transformer. Background Technology

[0002] A search revealed, for example, a patent with patent number CN115985630A, which discloses an air-cooled dry-type transformer, including a heat-insulated cabinet and a dry-type transformer. The dry-type transformer is fixedly installed in the inner cavity of the heat-insulated cabinet, and a ventilated cover is fixedly connected to the top of the heat-insulated cabinet. An air-cooled heat dissipation component is provided on the ventilated cover.

[0003] The aforementioned patent increases the airflow rate above the insulated cabinet, allowing outside air to enter the inner cavity of the cabinet. As the heat dissipation fins rotate, the speed of air circulation inside the cabinet is accelerated. However, it cannot automatically adjust the heat dissipation effect according to the degree of heat accumulation. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing equipment cannot automatically adjust the heat dissipation effect based on the degree of heat accumulation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an air-cooled dry-type transformer, including a base and a winding structure disposed on the upper end of the base, the winding structure being used to improve the heat dissipation capacity of the winding; it also includes a heat dissipation component disposed on the upper part of the base, the heat dissipation component being used to improve the heat dissipation effect, and a cover plate being provided on the upper end of the base.

[0006] Furthermore, the winding structure includes a support rod, a core, a winding, and a retaining wall. The support rod is fixed to the upper end of the base, and the upper end of the support rod passes through the cover plate. The upper end of the support rod is provided with a threaded rod and a fixing nut is threadedly connected to it. The core is sleeved on the upper part of the support rod, the lower end of the core contacts the base, and the upper end of the core contacts the cover plate. The winding is wound around the side wall of the core, and the retaining wall is fixed to the side of the core.

[0007] Furthermore, the heat dissipation assembly includes a baffle, a first annular shell, and a second annular shell. The baffle is fixed to the upper end of the base, and an explosion-proof layer is fixed to the inner side of the baffle. The base, baffle, enclosure, and cover plate constitute a closed heat dissipation cavity. An air inlet and an air outlet are respectively provided on the base and the cover plate. The first annular shell is fixed to the inner side of the air inlet, and the second annular shell is fixed to the inner side of the air outlet. The first annular shell constitutes a closed pressurization cavity, and the second annular shell constitutes a closed pressurization cavity. The first pressurization cavity and the second pressurization cavity are connected to the air outlet of the turbine air pump through a conduit. The first pressurization cavity and the second pressurization cavity are arranged with openings in the same direction. The turbine air pump is fixed to the outer wall of the baffle, and a valve is provided between the turbine air pump and the conduit.

[0008] Furthermore, the core is hollow inside and has through holes that match the air inlet and outlet. A thermal sensor is fixed inside the core.

[0009] Furthermore, a microprocessor is provided at the lower end of the base, the thermal sensor is connected to the microprocessor via wires, the turbine air pump is connected to the microprocessor via wires, and the valve is connected to the microprocessor via wires.

[0010] Furthermore, the core is made of silicon steel, which provides higher permeability and lower loss than other materials, thereby reducing the hysteresis loss and eddy current loss of the core.

[0011] Furthermore, the winding adopts a multi-layer cylindrical winding structure to increase the heat dissipation area and improve the heat dissipation capacity of the winding. The number of turns and wire diameter of the winding are also reasonably designed to meet the electrical performance requirements of the transformer.

[0012] Furthermore, the explosion-proof layer is made of asbestos, which has better chemical stability, acid and alkali resistance, and high temperature resistance than other materials.

[0013] The beneficial effects of this utility model after adopting the above structure are as follows:

[0014] (1) By linking thermal sensors, microprocessors, turbine pumps and valves, the heat dissipation effect can be automatically adjusted according to the degree of heat accumulation.

[0015] (2) Optimize the layout of the air duct to ensure that the air can flow smoothly through the windings and core of the transformer and improve the heat dissipation effect. Adopt an independent air duct design to separate the heat dissipation of the windings and core and improve the heat dissipation efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the overall functionality of this utility model;

[0018] Figure 2 This is a schematic diagram of the breakdown of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of this utility model. Figure 3 ;

[0022] Figure 6 for Figure 4 Enlarged view of part A;

[0023] Figure 7 for Figure 5 Enlarged view of part B.

[0024] In the attached diagram: 1. Base, 2. Winding structure, 3. Heat dissipation assembly, 4. Cover plate, 5. Support rod, 6. Core, 7. Winding, 8. Enclosure, 9. Fixing nut, 10. Baffle, 11. Ring shell one, 12. Ring shell two, 13. Heat dissipation cavity, 14. Pressure boosting cavity one, 15. Pressure boosting cavity two, 16. Turbine air pump, 17. Thermistor, 18. Explosion-proof layer, 19. Through hole. Detailed Implementation

[0025] like Figure 1-2 As shown, an air-cooled dry-type transformer includes a base 1 and a winding structure 2 disposed on the upper end of the base 1. The winding structure 2 is used to improve the heat dissipation capacity of the winding 7. It also includes a heat dissipation component 3 disposed on the base 1 to improve the heat dissipation effect. A cover plate 4 is provided on the upper end of the base 1.

[0026] As shown in the figure, the winding structure 2 includes a support rod 5, a core 6, a winding 7, and a retaining wall 8. The support rod 5 is fixed to the upper end of the base 1. The upper end of the support rod 5 passes through the cover plate 4. The upper end of the support rod 5 is provided with a threaded rod and a fixing nut 9 is threadedly connected to it. The core 6 is sleeved on the upper part of the support rod 5. The lower end of the core 6 contacts the base 1, and the upper end of the core 6 contacts the cover plate 4. The winding 7 is wound around the side wall of the core 6, and the retaining wall 8 is fixed to the side of the core 6.

[0027] The core 6 is hollow inside and has through holes 19 that match the air inlet and outlet. A thermal sensor 17 is fixed inside the core 6. The core 6 is made of silicon steel, which provides high permeability and low loss compared to other materials, thereby reducing the hysteresis loss and eddy current loss of the core 6. The winding 7 adopts a multi-layer cylindrical design to increase the heat dissipation area and improve the heat dissipation capacity of the winding 7. The number of turns and wire diameter of the winding 7 are reasonably designed to meet the electrical performance requirements of the transformer.

[0028] The core 6 is made of high-permeability, low-loss high-quality silicon steel sheet to reduce the hysteresis loss and eddy current loss of the core 6. The three-dimensional rolled core 6 structure can reduce no-load loss and noise.

[0029] like Figure 3-4As shown in -5-6-7, the heat dissipation assembly 3 includes a baffle 10, a first annular shell 11, and a second annular shell 12. The baffle 10 is fixed to the upper end of the base 1. An explosion-proof layer 18 is fixed to the inner side of the baffle 10. The base 1, the baffle 10, the enclosure 8, and the cover plate 4 form a closed heat dissipation cavity 13. An air inlet and an air outlet are respectively opened on the base 1 and the cover plate 4. The first annular shell 11 is fixed to the inner side of the air inlet, and the second annular shell 12 is fixed to the inner side of the air outlet. The first annular shell 11 forms a closed pressurization cavity 14, and the second annular shell 12 forms a closed pressurization cavity 15. The first pressurization cavity 14 and the second pressurization cavity 15 are connected to the air outlet of the turbine air pump 16 through a conduit. The first pressurization cavity 14 and the second pressurization cavity 15 are arranged with openings in the same direction. The turbine air pump 16 is fixed to the outer wall of the baffle 10, and a valve is provided between the turbine air pump 16 and the conduit.

[0030] The base 1 has a microprocessor at its lower end. The thermal sensor 17 is connected to the microprocessor via a wire. The turbine air pump 16 is connected to the microprocessor via a wire. The valve is connected to the microprocessor via a wire. The explosion-proof layer 18 is made of asbestos. Asbestos has better chemical stability than other materials and is resistant to acids, alkalis, and high temperatures.

[0031] When the thermal sensor 17 senses that the temperature of the heat dissipation cavity 13 is lower than or equal to a set threshold, the microprocessor controls the valve to connect the turbine air pump 16 to the pressurization cavity 14. The turbine air pump 16 draws external gas into the pressurization cavity 14. After the gas is pressurized in the pressurization cavity 14, it is discharged through the air outlet. The airflow velocity in the heat dissipation cavity 13 increases, forming a pressure difference with the external gas, forcing the external gas into the heat dissipation cavity 13, and then discharging it through the air outlet, thereby realizing the flow of air and playing the role of heat dissipation.

[0032] When the thermal sensor 17 senses that the temperature of the heat dissipation cavity 13 is higher than the set threshold, the microprocessor controls the valve to simultaneously connect the turbine air pump 16 with the first pressurization cavity 14 and the second pressurization cavity 15. While drawing gas into the first pressurization cavity 14, gas is also drawn into the second pressurization cavity 15. After the gas is pressurized in the second pressurization cavity 15, it is discharged through the air outlet, increasing the gas flow rate at the upper end of the air outlet, thereby accelerating the heat dissipation effect and realizing the function of automatically adjusting the heat dissipation effect according to the degree of heat accumulation.

[0033] Airflow flows through the heat dissipation cavity 13 and the core 6 respectively, improving the heat dissipation effect and forming an independent air duct design, separating the heat dissipation of the winding 7 and the core 6, thus improving the heat dissipation efficiency.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An air-cooled dry-type transformer characterized by: It includes a base and a winding structure disposed on the upper end of the base, the winding structure being used to improve the heat dissipation capacity of the winding; it also includes a heat dissipation component disposed on the upper part of the base, the heat dissipation component being used to improve the heat dissipation effect, and a cover plate being provided on the upper end of the base; The heat dissipation assembly includes a baffle, a first annular shell, and a second annular shell. The baffle is fixed to the upper end of the base, and an explosion-proof layer is fixed to the inner side of the baffle. The base, baffle, enclosure, and cover plate constitute a closed heat dissipation cavity. An air inlet and an air outlet are respectively provided on the base and the cover plate. The first annular shell is fixed to the inner side of the air inlet, and the second annular shell is fixed to the inner side of the air outlet. The first annular shell constitutes a closed pressurization cavity, and the second annular shell constitutes a closed pressurization cavity. The first pressurization cavity and the second pressurization cavity are connected to the air outlet of the turbine air pump through a conduit. The first pressurization cavity and the second pressurization cavity are arranged with openings in the same direction. The turbine air pump is fixed to the outer wall of the baffle, and a valve is provided between the turbine air pump and the conduit.

2. The air-cooled dry-type transformer according to claim 1, characterized in that: The winding structure includes a support rod, a core, a winding, and a retaining wall. The support rod is fixed to the upper end of the base, and the upper end of the support rod passes through the cover plate. The upper end of the support rod is provided with a threaded rod and a fixing nut is threadedly connected to it. The core is sleeved on the upper part of the support rod, the lower end of the core contacts the base, and the upper end of the core contacts the cover plate. The winding is wound around the side wall of the core, and the retaining wall is fixed to the side of the core.

3. The air-cooled dry-type transformer according to claim 2, characterized in that: The core is hollow inside and has through holes that match the air inlet and outlet. A thermal sensor is fixed inside the core.

4. A wind-cooled dry-type transformer according to claim 2, characterized in that: The core is made of silicon steel.

5. A wind-cooled dry-type transformer according to claim 2, characterized in that: The winding adopts a multi-layer cylindrical winding structure, and the number of turns and wire diameter of the winding are reasonably designed.

6. A wind-cooled dry-type transformer according to claim 3, characterized in that: The base is equipped with a microprocessor at its lower end. The thermal sensor is connected to the microprocessor via a wire, the turbine air pump is connected to the microprocessor via a wire, and the valve is connected to the microprocessor via a wire.

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