Photovoltaic boosting transformer with good heat dissipation effect

Abstract

The invention discloses a photovoltaic boosting transformer with a good heat dissipation effect, which comprises a transformer mechanism, and the transformer mechanism comprises a transformer main body; and the number of the heat dissipation modules is multiple, the heat dissipation modules are fixedly installed on the surface of the transformer mechanism, and each heat dissipation module comprises an installation mechanism, a heat dissipation device, a reinforcing mechanism and an air cooling mechanism. The invention aims to solve the technical problems that in the using process of an existing photovoltaic boosting transformer, rapid heat dissipation is inconvenient when the temperature of the transformer is high, the resistance of a conductor can be increased due to the high temperature, more energy is lost in a heat form, the conversion efficiency of the transformer is reduced, and the service life of the transformer is prolonged. And aging and damage of materials in the transformer can be accelerated.

Description

Technical Field

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

[0002] The photovoltaic step-up transformer is an important component in the solar photovoltaic power generation system. It is mainly used to convert the direct current generated by the photovoltaic array into a higher voltage alternating current. This is because photovoltaic panels usually output low-voltage direct current, while the power grid or remote power users require higher voltage alternating current. In the photovoltaic power generation system, the power generated by the photovoltaic panel will first pass through an inverter, the function of which is to convert direct current into alternating current. Then, in order to effectively transmit electricity to the power grid or long-distance loads, a step-up transformer is needed to increase the voltage level, thereby reducing the current and reducing the loss on the transmission line, because the power loss is proportional to the square of the current.

[0003] Photovoltaic step-up transformers need to be cooled during operation. During the power conversion process, not all input electrical energy can be effectively converted into output electrical energy. Part of the energy will be lost in the form of heat, and this part of the energy loss mainly comes from winding resistance, core hysteresis and eddy currents. If this heat cannot be dissipated in time, it will cause the transformer temperature to rise. High temperature will affect the efficiency of the transformer. As the temperature rises, the resistance of the conductor increases, which will cause more energy to be lost in the form of heat, thereby reducing the conversion efficiency. Good heat dissipation can help keep the operating temperature low, 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, and 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 opened between two adjacent groups of heat dissipation blocks on each side of the transformer protection box. The external air is drawn into the heat dissipation plate through the provided bellows, and the cooling of the heat dissipation plate is accelerated by the heat exchange copper pipe extending into 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 inside of the transformer protection box, completing the protection of the transformer structure, and reducing energy consumption.

[0005] During use, the existing photovoltaic step-up transformer is not convenient for rapid heat dissipation when the transformer temperature is high. High temperature will increase 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 boost transformer with good heat dissipation effect, comprising:

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

[0009] The heat dissipation module is a plurality of heat dissipation modules, and the heat dissipation modules are fixedly mounted on the surface of the transformer mechanism. The heat dissipation module comprises 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 with mounting frames, the top of the transformer body is respectively equipped 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 transformer body surface is equipped 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, wherein: the mounting mechanism is fixedly connected to the surface of the transformer body, the radiator is fixedly installed inside the mounting mechanism, the radiator is in contact with the surface of the transformer body, the reinforcement mechanism is fixedly installed on the radiator, and the air cooling mechanism is fixedly installed 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, the mounting seat is fixedly connected to the surface of the transformer body, a card slot is provided on the inner wall of the mounting seat, and 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 installed 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, and the connecting frame is movably installed 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 cross pipe, the liquid inlet end of the cross 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, wherein: the inner cavity of the main heat sink is provided with a flow cavity, a plurality of partitions are fixedly connected inside 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, a plurality of bent pipes are connected to the surface of the air outlet pipe, an air outlet hood is connected to the bottom of the bent pipe, the air outlet hood is fixedly installed on the top of the main heat sink, and the air outlet hood 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 a fan blade, the fan blade is located in the inner cavity of the shell, the left and right sides of the shell are fixedly connected to a fixing frame, an exhaust pipe is fixedly connected inside the fixing frame, 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 clamping plate and a second clamping plate, the second clamping plate is installed on the first clamping plate by bolts, and the first clamping plate 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, and 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 at 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 respectively, 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] The heat dissipation mechanism is a kind of heat dissipation mechanism, and its heat dissipation effect is improved, and its heat dissipation effect is 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 conductive silicone grease. The coolant absorbs the heat of the heat dissipation box. The circulation pump draws the coolant inside the heat dissipation box and injects it into the main heat sink through the cross pipe and the multi-head liquid inlet pipe. The coolant flows upward inside the flow cavity and flows back 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 into 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 avoid 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 to avoid local overheating. Since the coolant is dispersed, the temperature difference between the parts is small, so that the temperature of the entire heat dissipation system is 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;

[0031] Fig. 9 The air cooling mechanism structure of the present invention is shown in FIG. Figure 1 ;

[0032] Fig.10 The air cooling mechanism structure of the present invention is shown in FIG. Figure 2 ;

[0033] Fig.11 An exploded view of the air cooling mechanism of the present invention;

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

[0035] Fig.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, refueling 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, card slot; 208, connecting strip; 209, heat dissipation box; 210, connecting frame; 211, card 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 plate; 219. Flow chamber; 220. Shell; 221. Motor; 222. Exhaust pipe; 223. Fixing frame; 224. Second clamping plate; 225. First clamping plate; 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. Exhaust pipe; 230. Exhaust 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 implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] like Figure 1-Figure 13 As shown, this embodiment provides a photovoltaic step-up transformer with good heat dissipation effect, including a transformer mechanism 100, the transformer mechanism 100 includes a transformer body 101, the left and right sides of the bottom of the transformer body 101 are fixedly connected with mounting frames 102, the top of the transformer body 101 is respectively installed with 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, and the bottom of the surface of the transformer body 101 is installed with an oil drain bolt 109.

[0039] Furthermore, an iron core is arranged 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 to release excess pressure and prevent explosion or other damage. An intelligent control system is provided inside the central controller 106 to wirelessly control a plurality of 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 the data is fed back to the central controller 106. The central controller 106 controls a plurality of heat dissipation modules 200 according to the preset temperature and the detection temperature to quickly dissipate heat in high temperature conditions. When the detection temperature is 5-10°C higher than the preset temperature, some heat dissipation modules 200 are started for heat dissipation. When the detection temperature is more than 10°C higher than the preset temperature, all heat dissipation modules 200 are started for heat dissipation.

[0042] The oiling 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 to 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, and 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 heat sink 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 heat sink 202 is fixedly mounted inside the mounting mechanism 201, the heat sink 202 contacts the surface of the transformer body 101, the reinforcement mechanism 203 is fixedly mounted on the heat sink 202, and the air cooling mechanism 204 is fixedly mounted on the top of the heat sink 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, and the heat dissipation modules 200 work independently. When a single heat dissipation module 200 is damaged, 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 conductive silicone grease to absorb the heat of the transformer oil inside the transformer body 101 and dissipate the absorbed heat into the air to passively cool the transformer body 101. When rapid cooling is required, the air cooling mechanism 204 is started to extract cold air and discharge 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. During the flow of cold air inside the radiator 202, the heat absorbed by the radiator 202 is driven to assist the radiator 202 in rapid cooling. The reinforcement mechanism 203 fixes a plurality of main heat sinks 213 to prevent the main heat sinks 213 from deformation and damage, thereby affecting the heat dissipation efficiency.

[0048] Furthermore, the mounting mechanism 201 includes a mounting seat 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 seat 205. Fixed bent plates 206 are fixedly installed at the four corners of the surface of the mounting seat 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 sink 209. After the application is completed, the heat sink 209 is attached to the surface of the transformer body 101, and the connecting frame 210 is installed in the mounting base 205. The block 211 is inserted into the 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 sink 209 and the connecting frame 210, and the fixed bent plate 206 is fixed to the mounting base 205 by bolts, and the heat sink 209 and the connecting frame 210 are fixed. 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 sink 209, which is installed on the surface of the transformer body 101 through thermal grease. A connecting frame 210 is fixedly mounted on the surface of the heat sink 209, and the connecting frame 210 is movably mounted on the inner wall of the mounting base 205. A clamping block 211 is provided on the surface of the connecting frame 210, and the clamping block 211 is located in the inner cavity of the clamping slot 207 and is movably connected thereto. The inner wall of the fixed bent plate 206 is movably connected to the surfaces of the heat sink 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, a plurality of auxiliary heat sinks 214 are fixedly connected to the left and right sides of the main heat sink 213, a multi-head liquid inlet pipe 217 is connected to the bottom of the main heat sink 213, a transverse pipe 216 is connected to the liquid inlet end of the multi-head liquid inlet pipe 217, a circulation pump 212 is connected to the liquid inlet end of the transverse pipe 216, a circulation pump 212 is connected to the bottom of the inner cavity of the heat sink 209, the circulation pump 212 is fixedly installed on the surface of the connection frame 210, a multi-head liquid outlet pipe 215 is connected to the top of the main heat sink 213, and a liquid outlet end of the multi-head liquid outlet pipe 215 is connected to 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 penetrates into the inner cavity of the flow cavity 219, and the liquid inlet end of the multi-head liquid outlet pipe 215 penetrates into 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 plurality of 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 to improve the heat dissipation efficiency. The partition 218 separates the flow cavity 219 and strengthens the structural strength inside the main heat sink 213 to avoid its deformation and damage. The coolant is divided into multiple small fluid paths by the partition 218, which can significantly increase the contact area between the coolant and the heat dissipation metal, thereby improving the heat exchange efficiency. In addition, the multi-channel design helps to ensure that the coolant is evenly distributed throughout the main heat sink 213 to avoid 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. A plurality of elastic clamps 235 are mounted 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 is movably connected to the auxiliary heat sink 214. Threaded rods 236 are mounted on both sides of the elastic plate 234. A nut seat 237 is threadedly sleeved on one end of the threaded rod 236. 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 with 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 a plurality of curved pipes 231. The bottom of the curved pipe 231 is connected to an air outlet hood 230. The air outlet hood 230 is fixedly installed on the top of the main heat sink 213. The air outlet hood 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 blade 232, and the fan blade 232 is 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 inside of the fixing frame 223 is fixedly connected to the 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 the exhaust head 226, and the exhaust head 226 is internally threaded with a filter 233. The surface of the exhaust head 226 is movably connected to a vertical pipe 227, and 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 installed 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.

[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 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 clogging of the pipe. 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 it is necessary to clean the filter 233, 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 screwed out from the inner wall of the exhaust head 226 for cleaning.

[0061] Furthermore, the vertical pipe 227 includes a pipe body 2271, a mounting hole 2272 is opened 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 with a mounting sleeve 2277, the inner wall of the mounting sleeve 2277 is fixedly connected with a venturi tube 2278, and a waterproof motor 2275 is fixedly installed inside the accelerating end of the venturi tube 2278, and the output shaft of the waterproof motor 2275 is fixedly connected with 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 first-stage impeller 2273 and the secondary impeller 2274 work together to form an increasing pressure difference.

[0062] The first-stage impeller 2273 first performs a preliminary pressurization treatment 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, the airflow separation is further reduced and the compression efficiency is improved. 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 in that: 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 multiple and the heat dissipation modules (200) are fixedly mounted on the surface of the transformer mechanism (100).

2. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 1, characterized in that: The heat dissipation module (200) comprises a mounting mechanism (201), a heat sink (202), a reinforcement mechanism (203) and an air cooling mechanism (204).

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

4. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 3, characterized in that: The air cooling mechanism (204) comprises a shell (220), the shell (220) is fixedly mounted on the top of the radiator (202), and a heat dissipation controller (228) is fixedly mounted on the front of the shell (220).

5. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 4, 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).

6. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 5, characterized in that: The air outlet cover (230) is fixedly mounted on the top of the radiator (202).

7. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 6, characterized in that: A motor (221) is fixedly mounted at the center of the top of the housing (220); 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).

8. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 7, characterized in that: The left and right sides of the shell (220) are 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).

9. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 8, characterized in that: The air inlet end of the shell (220) is connected to an exhaust head (226), and 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), and the top of the surface of the vertical pipe (227) is sleeved with a first clamping plate (225) and a second clamping plate (224), and the second clamping plate (224) is installed 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).

10. The photovoltaic step-up transformer with good heat dissipation effect as claimed in claim 9, characterized in that: The vertical pipe (227) comprises 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 with mounting sleeves (2277), the inner wall of the mounting sleeve (2277) is fixedly connected with a venturi tube (2278), a waterproof motor (2275) is fixedly installed inside the accelerating end of the venturi tube (2278), and the output shaft of the waterproof motor (2275) is fixedly connected to the inner wall of the venturi tube (2278). 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 on the outer side 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°, and 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).

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