A photovoltaic step-up transformer with good heat dissipation effect

Abstract

The present invention discloses a photovoltaic step-up transformer with excellent heat dissipation, comprising a transformer mechanism including a transformer body; a plurality of heat dissipation modules fixedly mounted on the surface of the transformer mechanism, and comprising a mounting mechanism, a radiator, a reinforcement mechanism, and an air cooling mechanism. The technical problem to be solved by the present invention is that existing photovoltaic step-up transformers are not suitable for rapid heat dissipation when the transformer temperature is high during use. High temperatures increase the resistance of the conductor, resulting in more energy loss as heat, thereby reducing the transformer's conversion efficiency and accelerating the aging and damage of the transformer's internal materials.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, in particular to a photovoltaic step-up transformer with good heat dissipation effect. Background Art

[0002] A photovoltaic (PV) step-up transformer is a crucial component in solar photovoltaic (PV) power generation systems, primarily used to convert the DC power generated by the PV array into a higher-voltage AC power supply. This is because PV panels typically output low-voltage DC power, while the grid or remote power users require higher-voltage AC power. In a PV power generation system, the power generated by the panels first passes through an inverter, which converts DC power into AC power. To efficiently transmit this power to the grid or remote loads, a step-up transformer is required to increase the voltage level, thereby reducing the current and minimizing losses in the transmission line, as power losses are proportional to the square of the current.

[0003] Photovoltaic step-up transformers require heat dissipation and cooling during operation. During the power conversion process, not all input electrical energy is effectively converted to output electrical energy. Some energy is dissipated as heat, primarily due to winding resistance, core hysteresis, and eddy currents. If this heat is not dissipated promptly, the transformer temperature will rise. High temperatures can affect transformer efficiency. As temperature rises, the conductor's resistance increases, which results in more energy loss as heat, reducing conversion efficiency. Effective heat dissipation can help maintain a lower operating temperature, thereby maintaining or improving efficiency.

[0004] A photovoltaic step-up transformer with air cooling and heat dissipation and its ancillary equipment with Chinese patent application number 202410925602.1 discloses a photovoltaic step-up transformer with air cooling and heat dissipation and its ancillary equipment, including a transformer protection box, wherein a plurality of groups of heat dissipation blocks are symmetrically installed on both sides of the transformer protection box, and a heat exchange window is provided between two adjacent groups of heat dissipation blocks on each side of the transformer protection box. External air is drawn into the interior of the heat dissipation plate by the operation of the provided bellows, and the cooling of the heat dissipation plate is accelerated by the heat exchange copper pipe extending into the interior of the heat dissipation plate, and the gas is discharged to the outside through the one-way air valve during the ventilation process, so that the air flow inside the heat dissipation block is accelerated, which can better improve the heat dissipation effect of the transformer protection box. At the same time, since the heat dissipation plate is located between two groups of adjacent transformer structures and the headquarters, the temperature between each group of transformer structures can be quickly reduced by the heat dissipation plate that enters, thereby better completing the cooling of the interior of the transformer protection box, completing the protection of the transformer structure, and reducing energy consumption.

[0005] Existing photovoltaic step-up transformers are not easy to dissipate heat quickly when the transformer temperature is high during use. High temperature increases the resistance of the conductor, causing more energy to be lost in the form of heat, thereby reducing the conversion efficiency of the transformer and accelerating the aging and damage of the internal materials of the transformer. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing photovoltaic step-up transformer is not convenient for rapid heat dissipation when the transformer temperature is high during use. High temperature will increase the resistance of the conductor, resulting in more energy loss in the form of heat, thereby reducing the conversion efficiency of the transformer and accelerating the aging and damage of the internal materials of the transformer.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic step-up transformer with good heat dissipation effect, comprising:

[0008] A transformer mechanism, the transformer mechanism comprising a transformer body;

[0009] The heat dissipation module is provided in a plurality of pieces and is fixedly mounted on the surface of the transformer mechanism. The heat dissipation module includes a mounting mechanism, a radiator, a reinforcement mechanism and an air cooling mechanism.

[0010] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the left and right sides of the bottom of the transformer body are fixedly connected to mounting brackets, the top of the transformer body is respectively installed with a low-voltage insulating bushing, a high-voltage insulating bushing, a pressure relief valve, a central controller, a refueling bolt and a temperature sensor, and the bottom of the surface of the transformer body is installed with an oil drain bolt.

[0011] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the mounting mechanism is fixedly connected to the surface of the transformer body, the radiator is fixedly mounted inside the mounting mechanism, the radiator is in contact with the surface of the transformer body, the reinforcement mechanism is fixedly mounted on the radiator, and the air cooling mechanism is fixedly mounted on the top of the radiator.

[0012] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the mounting mechanism includes a mounting seat, which is fixedly connected to the surface of the transformer body, and a card slot is provided on the inner wall of the mounting seat. Fixed bent plates are fixedly installed at the four corners of the surface of the mounting seat by bolts, and a connecting strip is fixedly connected to the fixed bent plate.

[0013] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the radiator includes a heat dissipation box, which is mounted on the surface of the transformer body through thermal grease, and the surface of the heat dissipation box is fixedly sleeved with a connecting frame, which is movably mounted on the inner wall of the mounting seat, and the surface of the connecting frame is provided with a card block, which is located in the inner cavity of the card slot and movably connected thereto, and the inner wall of the fixed bent plate is movably connected to the surface of the heat dissipation box and the connecting frame.

[0014] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, wherein: a plurality of main heat sinks are fixedly connected to the surface of the heat sink, a plurality of auxiliary heat sinks are fixedly connected to the left and right sides of the main heat sink, the bottom of the main heat sink is connected to a multi-head liquid inlet pipe, the liquid inlet end of the multi-head liquid inlet pipe is connected to a horizontal pipe, the liquid inlet end of the horizontal pipe is connected to a circulation pump, the liquid inlet end of the circulation pump passes through the bottom of the inner cavity of the heat sink, the circulation pump is fixedly installed on the surface of the connecting frame, the top of the main heat sink is connected to a multi-head liquid outlet pipe, and the liquid outlet end of the multi-head liquid outlet pipe passes through the top of the inner cavity of the heat sink.

[0015] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, a flow cavity is opened in the inner cavity of the main heat sink, a plurality of partitions are fixedly connected to the inside of the flow cavity, the liquid outlet end of the multi-head liquid inlet pipe penetrates into the inner cavity of the flow cavity, and the liquid inlet end of the multi-head liquid outlet pipe penetrates into the inner cavity of the flow cavity.

[0016] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the air cooling mechanism includes a shell, the shell is fixedly installed on the top of the heat dissipation box, a heat dissipation controller is fixedly installed on the front of the shell, an air outlet pipe is connected to the center of the bottom of the shell, the surface of the air outlet pipe is connected to several elbows, the bottom of the elbow is connected to an air outlet cover, the air outlet cover is fixedly installed on the top of the main heat sink, and the air outlet cover is located on the top of the auxiliary heat sink.

[0017] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, wherein: a motor is fixedly installed at the center of the top of the shell, the output shaft of the motor is fixedly connected to the fan blades, the fan blades are located in the inner cavity of the shell, the left and right sides of the shell are fixedly connected to the fixing frames, the interior of the fixing frames is fixedly connected to an exhaust pipe, the air outlet end of the exhaust pipe passes through the top of the inner cavity of the shell, the air inlet end of the shell is connected to an exhaust head, the exhaust head is internally threaded with a filter, the surface of the exhaust head is movably connected to a vertical pipe, the top of the surface of the vertical pipe is sleeved with a first plywood and a second plywood, the second plywood is mounted on the first plywood by bolts, and the first plywood is fixedly connected to one end of the fixing frame.

[0018] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, the reinforcement mechanism includes an elastic plate, which is movably mounted on the surface of the main heat sink, and a plurality of elastic claws are installed on one side of the main heat sink, and the elastic claws are sleeved on the surface of the main heat sink. The main heat sink is movably connected to the auxiliary heat sink, and threaded rods are installed on both sides of the elastic plate, and a nut seat is threadedly sleeved on one end of the threaded rod, and the nut seat is fixedly mounted on the surface of the heat sink.

[0019] As a preferred solution of the photovoltaic step-up transformer with good heat dissipation effect described in the present invention, wherein: the vertical pipe includes a tube body, an assembly hole is opened on the surface of the tube body, the exhaust head is installed in the assembly hole, the top and bottom of the inner cavity of the tube body are fixedly connected with a mounting sleeve, the inner wall of the mounting sleeve is fixedly connected with a Venturi tube, a waterproof motor is fixedly installed inside the acceleration end of the Venturi tube, the output shaft of the waterproof motor is fixedly connected with a rod body, and a primary impeller and a secondary impeller are fixedly sleeved on the surface of the rod body, the secondary impeller is located on the outside of the primary impeller, the primary impeller adopts a 17-blade backward-bend design with a backward-bend angle of 55°, the secondary impeller adopts a 13-blade forward-swept design with a forward-swept angle of 35°, and an increasing pressure difference is formed by the cooperation of the primary impeller and the secondary impeller.

[0020] Beneficial effects of the present invention:

[0021] When the heat is discharged by the fan, the heat dissipated in the outlet pipe is discharged by the outlet pipe, and the outlet pipe is gradually dissipated in the outlet pipe, so that the heat dissipation effect can be improved.

[0022] 2. The present invention controls the circulation pump through a heat dissipation controller. The coolant is inside the heat dissipation box. The heat dissipation box absorbs the heat of the transformer body through thermal grease. The coolant absorbs the heat of the heat dissipation box. The circulation pump draws the coolant from the inside of the heat dissipation box and injects it into the inside of the main heat sink through the cross pipe and the multi-head liquid inlet pipe. The coolant flows upward inside the flow cavity and returns to the top of the inner cavity of the heat dissipation box through the multi-head liquid outlet pipe. Through the circulation of the coolant, the main heat sink and the auxiliary heat sink can dissipate the heat of the coolant to the air, thereby improving the heat dissipation efficiency. The partition separates the flow cavity and strengthens the structural strength inside the main heat sink to prevent its deformation and damage. The partition divides the coolant into multiple small fluid paths, which can significantly increase the contact area between the coolant and the heat dissipation metal, thereby improving the heat exchange efficiency. Moreover, the multi-channel design helps to ensure that the coolant is evenly distributed throughout the main heat sink, avoiding local overheating. Since the coolant is dispersed, the temperature difference between each part is small, making the temperature of the entire heat dissipation system more balanced, reducing the stress concentration problem caused by uneven temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 The structure of the transformer mechanism of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 3 The structure of the transformer mechanism of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 4 It is a structural schematic diagram of the heat dissipation module of the present invention;

[0027] Figure 5 An exploded view of the mounting mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the radiator of the present invention;

[0029] Figure 7 is a cross-sectional view of a radiator of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified view of middle A;

[0031] Figure 9 Schematic diagram of the air cooling mechanism structure of the present invention Figure 1 ;

[0032] Figure 10 Schematic diagram of the air cooling mechanism structure of the present invention Figure 2 ;

[0033] Figure 11 This is an exploded view of the air cooling mechanism of the present invention;

[0034] Figure 12 It is a structural schematic diagram of the reinforcement mechanism of the present invention;

[0035] Figure 13 It is a schematic diagram of the vertical pipe structure of the present invention.

[0036] In the figure: 100, transformer mechanism; 101, transformer body; 102, mounting frame; 103, low-voltage insulating bushing; 104, high-voltage insulating bushing; 105, pressure relief valve; 106, central controller; 107, oil filling bolt; 108, temperature sensor; 109, oil drain bolt; 200, heat dissipation module; 201, mounting mechanism; 202, radiator; 203, reinforcement mechanism; 204, air cooling mechanism; 205, mounting seat; 206, fixed bent plate; 207, slot; 208, connecting strip; 209, heat dissipation box; 210, connecting frame; 211, clamping block; 212, circulation pump; 213, main heat sink; 214, auxiliary heat sink; 215, multi-head liquid outlet pipe; 216, cross pipe; 217. Multi-head liquid inlet pipe; 218. Partition; 219. Flow chamber; 220. Shell; 221. Motor; 222. Exhaust pipe; 223. Fixing frame; 224. Second splint; 225. First splint; 226. Exhaust head; 227. Vertical pipe; 2271. Tube body; 2272. Assembly hole; 2273. First-stage impeller; 2274. Secondary impeller; 2275. Waterproof motor; 2276. Rod body; 2277. Mounting sleeve; 2278. Venturi tube; 228. Heat dissipation controller; 229. Air outlet pipe; 230. Air outlet cover; 231. Bend pipe; 232. Fan blade; 233. Filter; 234. Elastic plate; 235. Elastic clamp; 236. Threaded rod; 237. Nut seat. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] like Figures 1-13 As shown, this embodiment provides a photovoltaic step-up transformer with good heat dissipation effect, including a transformer mechanism 100, which includes a transformer body 101. The left and right sides of the bottom of the transformer body 101 are fixedly connected to mounting brackets 102. A low-voltage insulating bushing 103, a high-voltage insulating bushing 104, a pressure relief valve 105, a central controller 106, a refueling bolt 107 and a temperature sensor 108 are respectively installed on the top of the transformer body 101. An oil drain bolt 109 is installed at the bottom of the surface of the transformer body 101.

[0039] Furthermore, an iron core is provided inside the transformer body 101 , an insulating material is sheathed on the surface of the iron core, a winding is sheathed on the surface of the insulating material, and the winding and the iron core work together to transform the current.

[0040] The mounting frame 102 is used to support and fix the transformer body 101 to ensure its stability and safety. The low-voltage insulating bushing 103 is connected to the primary winding on the low-voltage side inside the transformer body 101 and is used to introduce a lower voltage power supply into the transformer body 101. It provides electrical isolation to prevent current leakage. The high-voltage insulating bushing 104 is connected to the secondary winding on the high-voltage side and is used to transmit higher voltage power from the transformer body 101. Similarly, it also provides necessary insulation protection for high voltage power.

[0041] The pressure relief valve 105 automatically opens when the pressure in the transformer oil tank exceeds the safety limit, releasing excess pressure to prevent explosion or other damage. The central controller 106 is equipped with an intelligent control system to wirelessly control the multiple heat dissipation modules 200 and monitor the status of the transformer body 101. The temperature sensor 108 detects the oil temperature inside the transformer body 101 and feeds the data back to the central controller 106. The central controller 106 controls the multiple heat dissipation modules 200 according to the preset temperature and the detected temperature to quickly dissipate heat in high temperature conditions. When the detected temperature is 5-10°C higher than the preset temperature, some heat dissipation modules 200 are activated for heat dissipation. When the detected temperature is more than 10°C higher than the preset temperature, all heat dissipation modules 200 are activated for heat dissipation.

[0042] The oil filling bolt 107 is used to add transformer oil into the transformer body 101. The transformer oil not only serves as an insulating medium but also helps dissipate heat. When replacing old oil or checking oil quality during maintenance, the transformer oil is discharged through the oil drain bolt 109.

[0043] When the transformer mechanism 100 is working, the low-voltage power of the photovoltaic system enters the primary winding of the transformer body 101 through the low-voltage insulating bushing 103. The alternating magnetic field in the iron core induces a corresponding voltage in the secondary winding, completing the voltage increase process. The converted power is output to the power grid or other loads through the high-voltage insulating bushing 104. The temperature sensor 108 continuously monitors the oil temperature inside the transformer body 101 and sends the information to the central controller 106. If the temperature is higher than the set temperature, the central controller 106 starts the heat dissipation module 200 to help cool down. The pressure relief valve 105 will automatically open when the pressure inside the transformer body 101 is too high to ensure that the transformer body 101 will not be in a dangerous situation due to overpressure. The temperature sensor 108 and the oil drain bolt 109 are used to manage and maintain the transformer oil.

[0044] Furthermore, it also includes a heat dissipation module 200. There are several heat dissipation modules 200. The heat dissipation modules 200 are fixedly installed on the surface of the transformer mechanism 100. The heat dissipation module 200 includes a mounting mechanism 201, a radiator 202, a reinforcement mechanism 203 and an air cooling mechanism 204.

[0045] Furthermore, the mounting mechanism 201 is fixedly connected to the surface of the transformer body 101, the radiator 202 is fixedly mounted inside the mounting mechanism 201, the radiator 202 contacts the surface of the transformer body 101, the reinforcement mechanism 203 is fixedly mounted on the radiator 202, and the air cooling mechanism 204 is fixedly mounted on the top of the radiator 202.

[0046] By installing several heat dissipation modules 200 on the surface of the transformer mechanism 100, the transformer mechanism 100 can be efficiently cooled. Moreover, the heat dissipation modules 200 work independently. If a single heat dissipation module 200 is damaged, the other heat dissipation modules 200 can work normally, thereby improving the stability and effect of heat dissipation.

[0047] The mounting mechanism 201 is pre-installed on the surface of the transformer body 101 to fix the radiator 202. The radiator 202 is installed on the surface of the transformer body 101 through thermal grease, absorbs the heat of the transformer oil inside the transformer body 101, and dissipates the absorbed heat into the air, thereby passively cooling the transformer body 101. When rapid cooling is required, the air cooling mechanism 204 is started, and the air cooling mechanism 204 draws cold air and discharges the cold air from top to bottom. Since the air cooling mechanism 204 is located at the top of the radiator 202, cold air enters from the top of the radiator 202 and is discharged from the bottom of the radiator 202. In the process of cold air flowing inside the radiator 202, it drives the heat absorbed by the radiator 202, and assists the radiator 202 in rapid cooling. The reinforcement mechanism 203 fixes several main heat sinks 213 to prevent the main heat sinks 213 from deformation and damage, which affects the heat dissipation efficiency.

[0048] Furthermore, the mounting mechanism 201 includes a mounting base 205, which is fixedly connected to the surface of the transformer body 101. A slot 207 is provided on the inner wall of the mounting base 205. Fixed bent plates 206 are fixed to the four corners of the surface of the mounting base 205 by bolts, and a connecting strip 208 is fixedly connected to the fixed bent plate 206.

[0049] When installing the radiator 202, the mounting base 205 is welded to the surface of the transformer body 101 in advance, and then thermal grease is applied to the heat dissipation box 209. After the application is completed, the heat dissipation box 209 is attached to the surface of the transformer body 101, and the connecting frame 210 is installed in the mounting base 205. The card block 211 is inserted into the card slot 207 to position the connecting frame 210. After the installation is completed, the fixed bent plate 206 is placed on the surface of the heat dissipation box 209 and the connecting frame 210, and the fixed bent plate 206 is fixed to the mounting base 205 by bolts. The heat dissipation box 209 and the connecting frame 210 are fixed, and the connecting strip 208 connects the fixed bent plates 206 on the upper and lower sides to improve the convenience of installing the fixed bent plates 206.

[0050] Furthermore, the radiator 202 includes a heat dissipation box 209, which is installed on the surface of the transformer body 101 through thermal grease. The surface of the heat dissipation box 209 is fixedly sleeved with a connecting frame 210, and the connecting frame 210 is movably installed on the inner wall of the mounting base 205. The surface of the connecting frame 210 is provided with a card block 211, which is located in the inner cavity of the card slot 207 and is movably connected to it. The inner wall of the fixed bent plate 206 is movably connected to the surface of the heat dissipation box 209 and the connecting frame 210.

[0051] Furthermore, a plurality of main heat sinks 213 are fixedly connected to the surface of the heat sink 209, and a plurality of auxiliary heat sinks 214 are fixedly connected to the left and right sides of the main heat sink 213. The bottom of the main heat sink 213 is connected to a multi-head liquid inlet pipe 217, and the liquid inlet end of the multi-head liquid inlet pipe 217 is connected to a transverse pipe 216, and the liquid inlet end of the transverse pipe 216 is connected to a circulation pump 212. The liquid inlet end of the circulation pump 212 passes through the bottom of the inner cavity of the heat sink 209, and the circulation pump 212 is fixedly installed on the surface of the connecting frame 210. The top of the main heat sink 213 is connected to a multi-head liquid outlet pipe 215, and the liquid outlet end of the multi-head liquid outlet pipe 215 passes through the top of the inner cavity of the heat sink 209.

[0052] Furthermore, a flow cavity 219 is opened in the inner cavity of the main heat sink 213, and a plurality of partitions 218 are fixedly connected inside the flow cavity 219. The liquid outlet end of the multi-head liquid inlet pipe 217 passes through the inner cavity of the flow cavity 219, and the liquid inlet end of the multi-head liquid outlet pipe 215 passes through the inner cavity of the flow cavity 219.

[0053] Furthermore, the heat sink 209, the main heat sink 213, the auxiliary heat sink 214 and the partition 218 are all made of aluminum alloy.

[0054] Furthermore, the partition 218 divides the flow cavity 219 into a plurality of flow channels, and the multiple liquid inlet heads of the multi-head liquid inlet pipe 217 penetrate into different flow channels, so that a plurality of flowing coolant fluids are formed inside the main heat sink 213.

[0055] During the operation of the radiator 202, the heat dissipation controller 228 controls the circulation pump 212. The coolant is inside the heat dissipation box 209. The heat dissipation box 209 absorbs the heat of the transformer body 101 through the thermal grease. The coolant absorbs the heat of the heat dissipation box 209. The circulation pump 212 extracts the coolant inside the heat dissipation box 209 and injects it into the main heat dissipation fin 213 through the cross pipe 216 and the multi-head liquid inlet pipe 217. The coolant flows upward inside the flow cavity 219 and flows back to the top of the inner cavity of the heat dissipation box 209 through the multi-head liquid outlet pipe 215. By circulating the coolant, the main heat dissipation fin 213 and the auxiliary heat dissipation fin 213 are 14 can dissipate the heat of the coolant into the air, thereby improving the heat dissipation efficiency. The partition 218 separates the flow cavity 219 and strengthens the structural strength inside the main heat sink 213 to prevent its deformation and damage. The partition 218 divides the coolant into multiple small fluid paths, which can significantly increase the contact area between the coolant and the heat dissipation metal, thereby improving the heat exchange efficiency. Moreover, the multi-channel design helps to ensure that the coolant is evenly distributed throughout the main heat sink 213, avoiding local overheating. Since the coolant is dispersed, the temperature difference between each part is small, making the temperature of the entire heat dissipation system more balanced, reducing the stress concentration problem caused by uneven temperature.

[0056] Furthermore, the reinforcement mechanism 203 includes an elastic plate 234, which is movably mounted on the surface of the main heat sink 213. Several elastic clamps 235 are installed on one side of the main heat sink 213. The elastic clamps 235 are sleeved on the surface of the main heat sink 213. The main heat sink 213 and the auxiliary heat sink 214 are movably connected. Threaded rods 236 are installed on both sides of the elastic plate 234. One end of the threaded rod 236 is threadedly sleeved with a nut seat 237, and the nut seat 237 is fixedly mounted on the surface of the heat sink 209.

[0057] When installing the reinforcement mechanism 203, the nut seat 237 is welded to the surface of the heat sink 209 in advance, and several elastic claws 235 are installed at the same time through the elastic plate 234. The elastic claws 235 are stuck on the surface of the main heat sink 213 and contact the outermost auxiliary heat sink 214 to separate the several main heat sinks 213 to avoid contact with each other, and maintain the shape of the main heat sink 213 to avoid bending and deformation, thereby improving its strength and service life. After the installation is completed, the threaded rod 236 is passed through the elastic plate 234 and screwed into the nut seat 237 to fix the elastic plate 234 and the elastic claws 235.

[0058] Furthermore, the air cooling mechanism 204 includes a shell 220, which is fixedly installed on the top of the heat sink 209. A heat dissipation controller 228 is fixedly installed on the front of the shell 220. An air outlet pipe 229 is connected to the center of the bottom of the shell 220. The surface of the air outlet pipe 229 is connected to several curved pipes 231. The bottom of the curved pipe 231 is connected to an air outlet cover 230. The air outlet cover 230 is fixedly installed on the top of the main heat sink 213. The air outlet cover 230 is located on the top of the auxiliary heat sink 214.

[0059] Furthermore, a motor 221 is fixedly installed at the center of the top of the shell 220, and the output shaft of the motor 221 is fixedly connected to the fan blades 232, which are located in the inner cavity of the shell 220. The left and right sides of the shell 220 are fixedly connected to the fixing frame 223, and the interior of the fixing frame 223 is fixedly connected to the exhaust pipe 222. The air outlet end of the exhaust pipe 222 passes through the top of the inner cavity of the shell 220, and the air inlet end of the shell 220 is connected to the exhaust head 226. The exhaust head 226 is internally threaded with a filter 233, and the surface of the exhaust head 226 is movably connected to a vertical pipe 227. The top of the surface of the vertical pipe 227 is provided with a first splint 225 and a second splint 224. The second splint 224 is mounted on the first splint 225 by bolts, and the first splint 225 is fixedly connected to one end of the fixing frame 223.

[0060] During the operation of the air cooling mechanism 204, the heat dissipation controller 228 controls the motor 221, and the motor 221 drives the fan blades 232 to rotate inside the shell 220, so that negative pressure is generated above the inner cavity of the shell 220. The negative pressure causes the exhaust pipe 222 to extract the external cold air, and the cold air enters the interior of the exhaust pipe 222 through the vertical pipe 227, the exhaust head 226 and the filter 233. The top and bottom of the vertical pipe 227 extract the cold air to prevent the adjacent heat dissipation module 200 from affecting the air intake. The filter 233 filters the floating objects in the cold air to avoid pipe blockage. The cold air enters the interior of the air outlet pipe 229 and is discharged downward through the bent pipe 231 and the air outlet cover 230. The cold air discharged downward first contacts the top of the main heat sink 213 and the auxiliary heat sink 214, and then passes through the main heat sink 213 and the auxiliary heat sink 214, taking away the heat on the main heat sink 213 and the auxiliary heat sink 214, thereby improving their heat dissipation efficiency. When the filter 233 needs to be cleaned, the second clamping plate 224 is removed from the first clamping plate 225, and then the vertical pipe 227 is pulled out from the surface of the exhaust head 226, and the filter 233 is unscrewed from the inner wall of the exhaust head 226 for cleaning.

[0061] Furthermore, the vertical pipe 227 includes a tube body 2271, a mounting hole 2272 is opened on the surface of the tube body 2271, the exhaust head 226 is installed in the mounting hole 2272, the top and bottom of the inner cavity of the tube body 2271 are fixedly connected to the mounting sleeve 2277, the inner wall of the mounting sleeve 2277 is fixedly connected to the venturi tube 2278, the acceleration end of the venturi tube 2278 is fixedly installed with a waterproof motor 2275, and the output shaft of the waterproof motor 2275 is fixedly connected to the The rod body 2276 has a first-stage impeller 2273 and a secondary impeller 2274 fixedly mounted on its surface. The secondary impeller 2274 is located on the outside of the first-stage impeller 2273. The first-stage impeller 2273 adopts a 17-blade backward-bend design with a backward-bend angle of 55°. The secondary impeller 2274 adopts a 13-blade forward-swept design with a forward-swept angle of 35°. The cooperation of the first-stage impeller 2273 and the secondary impeller 2274 forms an increasing pressure difference.

[0062] The first-stage impeller 2273 first performs preliminary pressurization on the gas entering the acceleration section of the Venturi tube 2278, so that it obtains a certain dynamic pressure and static pressure. Due to the use of a large number of blades and a large backward bending angle, the airflow can be effectively controlled and prepared for subsequent compression. The secondary impeller 2274 then compresses the gas that has been initially pressurized again. The forward-swept blade design plays an important role here. By changing the airflow path, it further reduces airflow separation and improves compression efficiency. The shallower angle allows the gas to flow out at a higher speed and pressure, thereby achieving an increasing pressure difference relative to the first-stage impeller. The design parameters of the two sets of impellers cooperate with each other to ensure that the transition from the first stage to the secondary stage is smooth and efficient, avoiding unnecessary energy loss. The reasonable number of blades, angle selection, and forward and backward bending / forward sweeping design work together to form an efficient two-stage pressurization system. By precisely controlling the airflow and achieving the required pressure through multi-stage compression, a large amount of cold air enters the assembly hole 2272 and the exhaust head 226.

Claims

1. A photovoltaic step-up transformer with good heat dissipation effect, characterized by: include, A transformer mechanism (100), the transformer mechanism (100) comprising a transformer body (101); A heat dissipation module (200), wherein the number of the heat dissipation modules (200) is several, and the heat dissipation modules (200) are fixedly mounted on the surface of the transformer mechanism (100); The heat dissipation module (200) comprises a mounting mechanism (201), a radiator (202), a reinforcement mechanism (203) and an air cooling mechanism (204); The air cooling mechanism (204) comprises a housing (220), the housing (220) being fixedly mounted on the top of the radiator (202), and a heat dissipation controller (228) being fixedly mounted on the front of the housing (220); The left and right sides of the shell (220) are both fixedly connected to fixing frames (223), the interior of the fixing frames (223) is fixedly connected to an exhaust pipe (222), and the air outlet end of the exhaust pipe (222) passes through the top of the inner cavity of the shell (220); The air inlet end of the shell (220) is connected to an exhaust head (226), the exhaust head (226) is internally threadedly connected to a filter (233), the surface of the exhaust head (226) is movably connected to a vertical pipe (227), the top of the surface of the vertical pipe (227) is sleeved with a first clamping plate (225) and a second clamping plate (224), the second clamping plate (224) is mounted on the first clamping plate (225) by bolts, and the first clamping plate (225) is fixedly connected to one end of the fixing frame (223); The vertical pipe (227) includes a pipe body (2271), a mounting hole (2272) is provided on the surface of the pipe body (2271), the exhaust head (226) is installed in the mounting hole (2272), the top and bottom of the inner cavity of the pipe body (2271) are fixedly connected to the mounting sleeve (2277), the inner wall of the mounting sleeve (2277) is fixedly connected to the venturi tube (2278), the acceleration end of the venturi tube (2278) is fixedly installed with a waterproof motor (2275), and the output shaft of the waterproof motor (2275) is fixed. A rod body (2276) is connected, and a first-stage impeller (2273) and a secondary impeller (2274) are fixedly mounted on the surface of the rod body (2276). The secondary impeller (2274) is located outside the first-stage impeller (2273). The first-stage impeller (2273) adopts a 17-blade backward-bend design with a backward-bend angle of 55°. The secondary impeller (2274) adopts a 13-blade forward-swept design with a forward-swept angle of 35°. An increasing pressure difference is formed by the cooperation of the first-stage impeller (2273) and the secondary impeller (2274).

2. The photovoltaic step-up transformer with good heat dissipation effect according to claim 1, characterized in that: The mounting mechanism (201) is fixedly connected to the surface of the transformer body (101), the radiator (202) is fixedly mounted inside the mounting mechanism (201), the radiator (202) is in contact with the surface of the transformer body (101), the reinforcement mechanism (203) is fixedly mounted on the radiator (202), and the air cooling mechanism (204) is fixedly mounted on the top of the radiator (202).

3. The photovoltaic step-up transformer with good heat dissipation effect according to claim 2, characterized in that: The center of the bottom of the shell (220) is connected to an air outlet pipe (229), the surface of the air outlet pipe (229) is connected to a plurality of curved pipes (231), and the bottom of the curved pipe (231) is connected to an air outlet cover (230).

4. The photovoltaic step-up transformer with good heat dissipation effect according to claim 3, characterized in that: The air outlet cover (230) is fixedly mounted on the top of the radiator (202).

5. The photovoltaic step-up transformer with good heat dissipation effect according to claim 4, characterized in that: A motor (221) is fixedly mounted at the center of the top of the housing (220), and a fan blade (232) is fixedly connected to the output shaft of the motor (221), and the fan blade (232) is located in the inner cavity of the housing (220).

Images