Combined transformer for photovoltaic power generation

Abstract

The invention relates to the technical field of combined transformers, in particular to a combined transformer for photovoltaic power generation, which comprises a frame, a group of combinable transformer bodies are mounted on the frame, a rotational flow blowing module is mounted at the bottom of each transformer body, and each transformer body is rotatably sleeved with an inner brush holder. A spiral oil removing piece attached to the transformer body is installed on the inner brush frame, the inner brush frame is rotationally sleeved with a heat conduction rotary cylinder, the heat conduction rotary cylinder is in linkage with the inner brush frame, and a set of turbulent flow fins are installed on the inner wall of the heat conduction rotary cylinder. Compared with the prior art, the transformer has the beneficial effects that by setting the rotating state of the inner brush frame, on one hand, the adhesion and deposition rate of insulating oil on the transformer body can be effectively reduced, a grease heat insulation layer is prevented from being generated outside the transformer body, on the other hand, the insulating oil can be cyclically in new contact with the transformer body, and the service life of the transformer body is prolonged. Therefore, the high heat dissipation surface area of the transformer body is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of combined transformers, and specifically to a combined transformer for photovoltaic power generation. Background Art

[0002] In the prior art, a patent document with the publication number CN118571603A discloses a dry-type transformer, including: a transformer body that changes the AC voltage using the principle of electromagnetic induction; a mounting frame for placing the transformer body; a base provided at the bottom of the mounting frame; a first mounting plate provided on the base; a wind box provided on the first mounting plate; a fan provided in the wind box; the bottom of the wind box is rotatably connected to the first mounting plate, and when the fan works, the wind box rotates reciprocally on the first mounting plate. The above-mentioned transformer can remove the dust on the transformer housing and improve the cooling effect of the transformer. However, on the one hand, it is not convenient to increase the agitation degree of the heat-dissipating insulating oil in the transformer during operation and reduce the adhesion and accumulation rate of the insulating oil on the transformer body and the generation of a grease heat-insulating layer outside the transformer body. On the other hand, it is not convenient for the existing transformer to generate eccentric movement and reciprocating movement of the heat-dissipating structure to reduce the dust accumulation rate of the heat-dissipating structure, improve the ventilation efficiency of the heat-dissipating structure, and maintain a high heat-dissipating surface area of the heat-dissipating structure. Based on this, the present invention provides a combined transformer for photovoltaic power generation to solve the problems raised in the above background art. Summary of the Invention

[0003] The present invention aims at the technical problems existing in the prior art, and provides a combined transformer for photovoltaic power generation to solve the problems that on the one hand, it is not convenient to increase the agitation degree of the heat-dissipating insulating oil in the transformer during operation and reduce the adhesion and accumulation rate of the insulating oil on the transformer body and the generation of a grease heat-insulating layer outside the transformer body, and on the other hand, it is not convenient for the existing transformer to generate eccentric movement and reciprocating movement of the heat-dissipating structure to reduce the dust accumulation rate of the heat-dissipating structure, improve the ventilation efficiency of the heat-dissipating structure, and maintain a high heat-dissipating surface area of the heat-dissipating structure.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A combined transformer for photovoltaic power generation, including a transformer frame, a group of combinable transformer bodies are installed on the transformer frame, a swirl blowing module is installed at the bottom of each transformer body, an inner brush frame is rotatably sleeved on each transformer body, a spiral oil removal piece that fits the transformer body is installed on the inner brush frame, a heat-conducting rotating cylinder is rotatably sleeved on the inner brush frame, the heat-conducting rotating cylinder is linked with the inner brush frame, a group of flow disturbing fins are installed on the inner wall of the heat-conducting rotating cylinder, a group of heat dissipation fins are installed on the outer periphery of the heat-conducting rotating cylinder, an oil storage cavity is arranged between the heat-conducting rotating cylinder and the transformer body, a fan frame is installed on the transformer frame, an oil outlet pipe and an oil return pipe are installed on the fan frame, each oil storage cavity is communicated with the oil outlet pipe and the oil return pipe, a driving vibration frame and a driven vibration frame are respectively slidably connected on the fan frame, a group of coil heat dissipation modules are installed between the driving vibration frame and the driven vibration frame, each coil heat dissipation module is communicated with the oil outlet pipe and the oil return pipe, a group of axial flow fans are installed on the fan frame at positions facing each coil heat dissipation module, and a transmission component for driving the driving vibration frame to vibrate reciprocally and driving the inner brush frame to rotate is installed on the fan frame.

[0005] The beneficial effects of the present invention are: 1. When the present invention is used, through the settings of the gear shaft, the intermediate bevel gear and the two linkage bevel gear rings, after the motor outputs the rotational speed, the heat-conducting rotating cylinder and the inner brush frame can rotate coaxially and in opposite directions. Through the coaxial and opposite rotation of the heat-conducting rotating cylinder and the inner brush frame, the agitation degree and the oil uniformity of the insulating oil in the heat-conducting rotating cylinder are improved. By improving the agitation degree and the oil uniformity of the insulating oil, on the one hand, the condensation rate of the insulating oil can be effectively reduced, and on the other hand, the heat in the insulating oil can be quickly dissipated through the heat-conducting rotating cylinder, thereby realizing the rapid heat conduction and heat dissipation operation of the insulating oil. At the same time, through the rotation state setting of the inner brush frame, on the one hand, the adhesion and accumulation rate of the insulating oil on the transformer body can be effectively reduced, and the generation of the grease heat insulation layer outside the transformer body can be avoided. On the other hand, the insulating oil can circulate and make new contact with the transformer body, so as to maintain the high heat dissipation surface area of the transformer body.

[0006] 2. In the present invention, when the transformer body is working, through the setting of the rotational speed output of the motor, the active vibration frame and the driven vibration frame can reciprocate within a set stroke. After the active vibration frame reciprocates, it then drives the spiral heat exchange coil to reciprocate along the displacement direction of the active vibration frame. Through the occurrence of the axial displacement of the spiral heat exchange coil, the ventilation and heat dissipation angle and position of the axial flow fan with respect to the spiral heat exchange coil are cyclically changed. At the same time, during the axial vibration of the spiral heat exchange coil, it can also perform eccentric self-rotation at a set speed. Through the occurrence of the eccentric self-rotation of the spiral heat exchange coil, on the one hand, the relative distance between the spiral heat exchange coil and the axial flow fan can be cyclically changed, and then the heat dissipation intensity of the axial flow fan on the spiral heat exchange coil can be cyclically changed. On the other hand, through the occurrence of the eccentric self-rotation of the spiral heat exchange coil, the spiral heat exchange coil can uniformly or omnidirectionally receive the axial cold air blowing effect of the axial flow fan. At the same time, through the synchronous occurrence of the eccentric self-rotation and the axial reciprocating displacement of the spiral heat exchange coil, the surface scaling and dust accumulation rate of the spiral heat exchange coil can be effectively reduced, and then the high heat dissipation performance of the spiral heat exchange coil can be maintained, thereby maintaining the high heat dissipation performance when the transformer body is working.

[0007] 3. In the present invention, when the combined transformer is working, the cold air blower blows air at a constant speed. After the cold air blower blows air at a constant speed, it can effectively improve the ventilation efficiency and heat dissipation rate of the outer surface of the heat conduction cylinder. On the other hand, it can effectively prevent dust from adhering to the outer surfaces of the heat conduction cylinder and the heat dissipation fins through positive pressure, and then maintain the high heat dissipation surface area of the heat conduction cylinder and the heat dissipation fins.

[0008] Based on the above technical solutions, the present invention can be further improved as follows.

[0009] Further, the transmission component includes a motor installed on the fan frame. The output shaft end of the motor is respectively drivingly connected with a first toothed belt and a second toothed belt. Each heat conduction cylinder is drivingly connected with the first toothed belt. A camshaft is rotatably connected to the fan frame. Bevel gears are installed on the output shaft end of the motor and the camshaft, and the two bevel gears are meshed with each other. A cam block is installed on the camshaft, and the cam block is in contact with the active vibration frame.

[0010] The beneficial effect of adopting the above further solution is that when the combined transformer is working, the motor outputs a rotational speed at a set power. After the motor outputs the rotational speed, it then drives the three heat conduction cylinders to rotate through the first toothed belt. Through the rotation of the three heat conduction cylinders, the three heat conduction cylinders can be evenly opposed to the air outlet surface of the axial flow fan, and then the heat dissipation efficiency and heat dissipation uniformity of the heat conduction cylinder can be effectively improved. And when the motor outputs the rotational speed, through the cooperation of the camshaft and the cam block, the active vibration frame can reciprocate within a set stroke; The transformer body is a commonly used component in the prior art. The specific structure and working principle of the transformer body have been disclosed in existing documents and will not be elaborated here.

[0011] Furthermore, linkage bevel gear rings are installed on both the heat-conducting rotary cylinder and the inner brush holder. A toothed shaft is rotatably installed on the device holder, and an intermediate bevel gear is installed on the toothed shaft. The two linkage bevel gear rings are both in transmission connection with the intermediate bevel gear, and the two linkage bevel gear rings are symmetrically arranged with the horizontal plane where the axis of the intermediate bevel gear is located as the axis.

[0012] The beneficial effect of adopting the above further scheme is that during use, through the settings of the toothed shaft, the intermediate bevel gear, and the two linkage bevel gear rings, after the motor outputs the rotational speed, the heat-conducting rotary cylinder and the inner brush holder can rotate coaxially in opposite directions. Through the coaxial reverse rotation of the heat-conducting rotary cylinder and the inner brush holder, the agitation degree and oil uniformity of the insulating oil in the heat-conducting rotary cylinder are improved. By improving the agitation degree and oil uniformity of the insulating oil, on the one hand, the condensation rate of the insulating oil can be effectively reduced, and on the other hand, the heat in the insulating oil can be quickly dissipated through the heat-conducting rotary cylinder, thereby realizing the rapid heat conduction and heat dissipation operation of the insulating oil.

[0013] At the same time, through the setting of the rotation state of the inner brush holder, on the one hand, the adhesion and accumulation rate of the insulating oil on the transformer body can be effectively reduced, and the generation of the grease heat insulation layer outside the transformer body can be avoided. On the other hand, the insulating oil can circulate and make new contact with the transformer body, thereby maintaining a high heat dissipation surface area of the transformer body; Furthermore, an oil outlet ring and an oil return ring are respectively rotatably connected to the heat-conducting rotary cylinder. The oil outlet ring is communicated with an oil outlet pipe, and the oil return ring is communicated with an oil return pipe. A group of oil holes distributed in a circumferential array are opened at positions on the heat-conducting rotary cylinder corresponding to the inner sides of the oil outlet ring and the oil return ring.

[0014] The beneficial effect of adopting the above further scheme is that through the settings of the oil outlet ring and the oil return ring, the circulation flow of the insulating oil in the heat-conducting rotary cylinder and the spiral heat exchange coil is realized. By realizing the effect of the circulating flow of the insulating oil, the circulating heat dissipation during the operation of the transformer body is realized.

[0015] Furthermore, the coil heat dissipation module includes a hollow shaft rotatably connected to the fan frame. The hollow shaft is in transmission connection with the second chain belt. A group of return springs are installed between the active vibration frame and the fan frame. A guide oil rotary seat is rotatably connected to the active vibration frame. The guide oil rotary seat is driven by the hollow shaft. A return oil rotary seat is rotatably installed on the inner wall of the driven vibration frame. Oil chambers are opened inside both the guide oil rotary seat and the return oil rotary seat. The oil outlet pipe is communicated with the oil chamber in the guide oil rotary seat through the hollow shaft. The oil return pipe is communicated with the oil chamber in the return oil rotary seat. Eccentric joints communicated with the oil chambers are provided at the eccentric positions of the guide oil rotary seat and the return oil rotary seat. A spiral heat exchange coil is rotatably communicated between the two eccentric joints. A driven gear is installed on the spiral heat exchange coil. A fixed toothed ring is installed on the fan frame. The driven gear is in transmission connection with the fixed toothed ring.

[0016] Further, a bushing is fixedly installed at the axial position of the oil guiding swivel base. An axially grooved sleeve with both ends open and slidably connected to the hollow shaft is fixedly provided inside the bushing. The cross-sections of the axially grooved sleeve and the hollow shaft are both regular polygons. An oil passage with both ends open is fixedly provided inside the hollow shaft, and both ends of the oil passage communicate with the oil chambers and the oil outlet pipes at corresponding positions respectively.

[0017] Further, the tooth length of the fixed gear ring is 6 to 8 times that of the driven gear. The oil guiding swivel base, the flow disturbing fins, the heat dissipating fins, the inner brush holder and the spiral oil removing piece are all made of ceramic material. The inner brush holder includes two brush rings, and a group of connecting rods distributed in a circumferential array are installed between the two brush rings.

[0018] The beneficial effect of adopting the above further scheme is that when the transformer body works, through the setting of the rotational speed output of the motor, the active vibration frame and the driven vibration frame can reciprocate within a set stroke. After the active vibration frame reciprocates, it drives the spiral heat exchange coil to reciprocate along the displacement direction of the active vibration frame. Through the axial displacement of the spiral heat exchange coil, the ventilation and heat dissipation angle and position of the axial flow fan relative to the spiral heat exchange coil are cyclically changed. At the same time, during the axial vibration of the spiral heat exchange coil, it can also perform eccentric self-rotation at a set speed. Through the occurrence of the eccentric self-rotation of the spiral heat exchange coil, on the one hand, the relative distance between the spiral heat exchange coil and the axial flow fan can be cyclically changed, and then the heat dissipation intensity of the axial flow fan on the spiral heat exchange coil can be cyclically changed. On the other hand, through the occurrence of the eccentric self-rotation of the spiral heat exchange coil, the spiral heat exchange coil can uniformly or omnidirectionally receive the axial cold air blowing effect of the axial flow fan. At the same time, through the synchronous occurrence of the eccentric self-rotation and the axial reciprocating displacement of the spiral heat exchange coil, the surface scaling and dust deposition rate of the spiral heat exchange coil can be effectively reduced, and then the high heat dissipation performance of the spiral heat exchange coil can be maintained, so as to maintain the high heat dissipation performance when the transformer body works.

[0019] Further, the swirl blowing module includes a blowing ring cavity opened at the lower part of the oil guiding swivel base. A group of blowing nozzles distributed in a circumferential array are installed on the oil guiding swivel base at the position corresponding to the lower part of the heat dissipating fins. The air outlet axis of the blowing nozzle is parallel to the axis of the oil guiding swivel base. A air distribution ring is rotatably connected to the blowing ring cavity. A cold air blower is installed on the device frame. A filter is installed at the air inlet port of the cold air blower. The air outlet port of the cold air blower is communicated with the air distribution ring through a pipeline.

[0020] The beneficial effect of adopting the above further scheme is that when the combined transformer works, the cold air blower blows air at a constant speed. After the cold air blower blows air at a constant speed, it can effectively improve the ventilation efficiency and heat dissipation rate of the outer surface of the heat conduction cylinder. On the other hand, it can effectively avoid the adhesion of dust on the outer surfaces of the heat conduction cylinder and the heat dissipating fins through positive pressure, and then maintain the high heat dissipation surface area of the heat conduction cylinder and the heat dissipating fins.

[0021] Further, an oil pump and a temperature sensor are respectively installed on the oil return pipe, a single-chip microcomputer is installed on the fan frame, and the data ends of the oil pump and the temperature sensor are both connected to the single-chip microcomputer in terms of data.

[0022] The beneficial effect of adopting the above further solution is that through the temperature measurement structure setting of the temperature sensor, the circulation speed of the insulating oil is controlled, and then the constant temperature effect of the insulating oil is maintained.

[0023] Further, it further includes three high-voltage connecting rods. The number of the transformer bodies is three. Each high-voltage connecting rod is connected to two transformer bodies at the corresponding positions, and an iron yoke cooperating with the three transformer bodies is installed and arranged on the transformer rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of a combined transformer for photovoltaic power generation according to the present invention; Figure 2 For the present invention Figure 1 is the partial enlarged structural schematic diagram at A in Figure 3 For the present invention Figure 1 is the structural schematic diagram from another angle; Figure 4 For the present invention Figure 3 is the partial enlarged structural schematic diagram at B in Figure 5 For the present invention Figure 3 is the partial enlarged structural schematic diagram at C in Figure 6 is the sectional structural schematic diagram of the transformer body of the present invention; Figure 7 For the present invention Figure 6 is the partial enlarged structural schematic diagram at D in Figure 8 is the sectional structural schematic diagram of the spiral heat exchange disc of the present invention; Figure 9 For the present invention Figure 8 is the partial enlarged structural schematic diagram at E in Figure 10 is the structural schematic diagram of the inner brush holder of the present invention.

[0025] In the drawings, the list of components represented by each reference numeral is as follows: 1. Instrument rack; 2. Transformer body; 3. Inner brush rack; 4. Spiral oil removal piece; 5. Heat-conducting rotary cylinder; 6. Turbulence fins; 7. Heat dissipation fins; 8. Fan rack; 9. Oil outlet pipe; 10. Oil return pipe; 11. Active vibration rack; 12. Driven vibration rack; 13. Axial flow fan; 14. Motor; 15. Camshaft; 16. Cam block; 17. Tooth shaft; 18. Oil outlet ring; 19. Oil return ring; 20. Oil hole; 21. Hollow shaft; 22. Return spring; 23. Oil guiding rotary seat; 24. Oil return rotary seat; 25. Oil chamber; 26. Eccentric joint; 27. Spiral heat exchange coil; 28. Driven gear; 29. Fixed gear ring; 30. Bush; 31. Blowing ring cavity; 32. Blowing nozzle; 33. Air distribution ring; 34. Cold air fan; 35. Temperature sensor; 36. High-voltage connecting rod; 37. Iron yoke. Detailed implementation manners

[0026] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] The present invention provides the following preferred embodiments As Figure 1-10 shown, a combined transformer for photovoltaic power generation includes an instrument rack 1, and a set of combinable transformer bodies 2 are installed on the instrument rack 1; The transformer body 2 is a common component in the prior art. The specific structure and working principle of the transformer body 2 have been disclosed in existing documents and will not be elaborated here.

[0028] It further includes three high-voltage connecting rods 36. The number of the transformer bodies 2 is three. Each high-voltage connecting rod 36 is connected to two transformer bodies 2 at the corresponding positions. An iron yoke 37 cooperating with the three transformer bodies 2 is installed on the instrument rack 1; A swirl blowing module is installed at the bottom of each transformer body 2. An inner brush rack 3 is rotatably sleeved on each transformer body 2, and a spiral oil removal piece 4 attached to the transformer body 2 is installed on the inner brush rack 3; The inner brush rack 3 includes two brush rings, and a set of connecting rods distributed in a circumferential array are installed between the two brush rings; A heat-conducting rotary cylinder 5 is rotatably sleeved on the inner brush rack 3, and the heat-conducting rotary cylinder 5 is linked with the inner brush rack 3; Linkage bevel gear rings are installed on both the heat-conducting rotary cylinder 5 and the inner brush rack 3. A tooth shaft 17 is rotatably installed on the instrument rack 1, and an intermediate bevel gear is installed on the tooth shaft 17. The two linkage bevel gear rings are both in transmission connection with the intermediate bevel gear, and the two linkage bevel gear rings are symmetrically arranged with the horizontal plane where the axis of the intermediate bevel gear is located as the axis; A set of turbulence fins 6 are installed on the inner wall of the heat-conducting rotary cylinder 5, and a set of heat dissipation fins 7 are installed on the outer periphery of the heat-conducting rotary cylinder 5; There is an oil storage cavity between the heat-conducting rotary cylinder 5 and the transformer body 2, and the interior of the oil storage cavity is filled with insulating oil; A fan frame 8 is installed on the frame 1. An oil outlet pipe 9 and an oil return pipe 10 are installed on the fan frame 8. Each oil storage cavity is communicated with the oil outlet pipe 9 and the oil return pipe 10; An oil pump and a temperature sensor 35 are respectively installed on the oil return pipe 10. A single-chip microcomputer is installed on the fan frame 8. The data terminals of the oil pump and the temperature sensor 35 are both connected to the single-chip microcomputer in terms of data.

[0029] Through the setting of the temperature measuring structure of the temperature sensor 35, the circulation speed of the insulating oil is controlled, and then the constant temperature effect of the insulating oil is maintained.

[0030] During use, through the setting of the gear shaft 17, the intermediate bevel gear and the two linkage bevel gear rings, after the motor 14 outputs a rotation speed, the heat-conducting rotary cylinder 5 and the inner brush holder 3 can rotate coaxially in opposite directions. Through the coaxial reverse rotation of the heat-conducting rotary cylinder 5 and the inner brush holder 3, the agitation degree and the fuel uniformity of the insulating oil in the heat-conducting rotary cylinder 5 are improved. Through the improvement of the agitation degree and the fuel uniformity of the insulating oil, on the one hand, the condensation rate of the insulating oil can be effectively reduced, and on the other hand, the heat in the insulating oil can be quickly dissipated through the heat-conducting rotary cylinder 5, and then the rapid heat conduction and heat dissipation operations of the insulating oil are realized.

[0031] At the same time, through the setting of the rotation state of the inner brush holder 3, on the one hand, the adhesion and accumulation rate of the insulating oil on the transformer body 2 can be effectively reduced, and the generation of the grease heat insulation layer outside the transformer body 2 can be avoided. On the other hand, the insulating oil can circulate and make new contact with the transformer body 2, so as to maintain the high heat dissipation surface area of the transformer body 2; A driving vibration frame 11 and a driven vibration frame 12 are respectively slidably connected to the fan frame 8. A group of coil pipe heat dissipation modules are installed between the driving vibration frame 11 and the driven vibration frame 12. Each coil pipe heat dissipation module is communicated with the oil outlet pipe 9 and the oil return pipe 10. A group of axial flow fans 13 are installed on the fan frame 8 at positions directly facing each coil pipe heat dissipation module. A transmission component for driving the driving vibration frame 11 to vibrate reciprocally and driving the inner brush holder 3 to rotate is installed on the fan frame 8.

[0032] The transmission component includes a motor 14 installed on the fan frame 8. The output shaft ends of the motor 14 are respectively drivingly connected with a first toothed belt and a second toothed belt. Each heat-conducting rotary cylinder 5 is drivingly connected with the first toothed belt. A camshaft 15 is rotatably connected to the fan frame 8. Bevel gears are installed on the output shaft end of the motor 14 and the camshaft 15, and the two bevel gears mesh with each other. A cam block 16 is installed on the camshaft 15, and the cam block 16 is in contact with the driving vibration frame 11.

[0033] When the combined transformer is working, the motor 14 outputs a rotational speed at a set power. After the motor 14 outputs the rotational speed, it then drives three heat-conducting rotating cylinders 5 to rotate through a first toothed belt. Through the rotation of the three heat-conducting rotating cylinders 5, the three heat-conducting rotating cylinders 5 can be evenly aligned with the air outlet surface of the axial flow fan 13, thereby effectively improving the heat dissipation efficiency and uniformity of the heat-conducting cylinder. Moreover, when the motor 14 outputs the rotational speed, through the cooperation of the camshaft 15 and the cam block 16, the active vibration frame 11 can reciprocate within a set stroke; An oil outlet ring 18 and an oil return ring 19 are respectively rotatably connected to the heat-conducting rotating cylinder 5. The oil outlet ring 18 is communicated with an oil outlet pipe 9, and the oil return ring 19 is communicated with an oil return pipe 10. A set of oil holes 20 distributed in a circumferential array are respectively opened at positions on the heat-conducting rotating cylinder 5 corresponding to the inner sides of the oil outlet ring 18 and the oil return ring 19.

[0034] Through the settings of the oil outlet ring 18 and the oil return ring 19, the circulation flow of the insulating oil in the heat-conducting rotating cylinder 5 and the spiral heat exchange coil 27 is realized. By realizing the effect of the circulation flow of the insulating oil, the circulation heat dissipation during the operation of the transformer body 2 is realized.

[0035] The coil heat dissipation module includes a hollow shaft 21 rotatably connected to the fan frame 8. The hollow shaft 21 is connected to a second chain belt for transmission. A set of return springs 22 are installed between the active vibration frame 11 and the fan frame 8. A oil guiding rotary seat 23 is rotatably connected to the active vibration frame 11, and the oil guiding rotary seat 23 is driven by the hollow shaft 21; A shaft sleeve 30 is fixedly installed at the axis position of the oil guiding rotary seat 23. An axially grooved cavity that is open at both ends and slidably connected to the hollow shaft 21 is fixedly opened inside the shaft sleeve 30. The cross-sections of the axially grooved cavity and the hollow shaft 21 are both regular polygons; A oil return rotary seat 24 is rotatably installed on the inner wall of the driven vibration frame 12. Oil chambers 25 are respectively opened inside the oil guiding rotary seat 23 and the oil return rotary seat 24. The oil outlet pipe 9 is communicated with the oil chamber 25 inside the oil guiding rotary seat 23 through the hollow shaft 21; An axially grooved cavity that is open at both ends is fixedly opened inside the hollow shaft 21. The two ends of the axially grooved cavity are respectively communicated with the oil chamber 25 at the corresponding position and the oil outlet pipe 9; The oil return pipe 10 is communicated with the oil chamber 25 inside the oil return rotary seat 24. Eccentric joints 26 communicated with the oil chamber 25 are respectively arranged at the eccentric positions of the oil guiding rotary seat 23 and the oil return rotary seat 24. A spiral heat exchange coil 27 is rotatably communicated between the two eccentric joints 26. A driven gear 28 is installed on the spiral heat exchange coil 27, and a fixed gear ring 29 is installed on the fan frame 8. The driven gear 28 is in transmission connection with the fixed gear ring 29.

[0036] The tooth length of the fixed gear ring 29 is 7 times the tooth length of the driven gear 28. The oil guiding rotary seat 23, the flow disturbing fins 6, the heat dissipation fins 7, the inner brush frame 3, and the spiral oil removing sheet 4 are all made of ceramic material.

[0037] When the transformer body 2 is working, through the rotation speed output setting of the motor 14, the active vibration frame 11 and the driven vibration frame 12 can reciprocate within a set stroke. After the active vibration frame 11 reciprocates, it then drives the spiral heat exchange coil 27 to reciprocate along the displacement direction of the active vibration frame 11. Through the occurrence of the axial displacement of the spiral heat exchange coil 27, the ventilation and heat dissipation angle and position of the axial flow fan 13 with respect to the spiral heat exchange coil 27 are cyclically changed. At the same time, during the process of the axial vibration of the spiral heat exchange coil 27, it can also perform eccentric self-rotation at a set speed. Through the occurrence of the eccentric self-rotation of the spiral heat exchange coil 27, on the one hand, the relative distance between the spiral heat exchange coil 27 and the axial flow fan 13 can be cyclically changed, and then the heat dissipation intensity of the axial flow fan 13 on the spiral heat exchange coil 27 can be cyclically changed. On the other hand, through the occurrence of the eccentric self-rotation of the spiral heat exchange coil 27, the spiral heat exchange coil 27 can evenly or omnidirectionally receive the axial cold air blowing effect of the axial flow fan 13. At the same time, through the synchronous occurrence of the eccentric self-rotation and axial reciprocating displacement of the spiral heat exchange coil 27, the surface fouling and dust deposition rate of the spiral heat exchange coil 27 can be effectively reduced, and then the high heat dissipation performance of the spiral heat exchange coil 27 can be maintained, so as to maintain the high heat dissipation performance of the transformer body 2 during operation.

[0038] The swirl blowing module includes a blowing ring cavity 31 opened at the lower part of the oil guiding rotary base 23. A group of blowing nozzles 32 distributed in a circumferential array are installed on the oil guiding rotary base 23 at a position corresponding to the lower part of the heat dissipation fins 7. The air outlet axis of the blowing nozzles 32 is parallel to the axis of the oil guiding rotary base 23. A distributing air ring 33 is rotatably connected to the blowing ring cavity 31. A cold air blower 34 is installed on the device frame 1. A filter is installed at the air inlet port of the cold air blower 34, and the air outlet port of the cold air blower 34 is communicated with the distributing air ring 33 through a pipeline.

[0039] When the combined transformer is working, the cold air blower 34 blows air at a constant speed. After the cold air blower 34 blows air at a constant speed, it can effectively improve the ventilation efficiency and heat dissipation rate on the outer surface of the heat conducting cylinder 5. On the other hand, it can effectively avoid the adhesion of dust on the outer surfaces of the heat conducting cylinder 5 and the heat dissipation fins 7 through positive pressure, and then maintain the high heat dissipation surface area of the heat conducting cylinder 5 and the heat dissipation fins 7.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A combined transformer for photovoltaic power generation, comprising a frame, on which a group of combinable transformer bodies are mounted, characterized in that: A swirl blowing module is installed at the bottom of each transformer body, an inner brush holder is rotatably sleeved on each transformer body, a spiral degreasing sheet that fits the transformer body is installed on the inner brush holder, a heat-conducting rotary cylinder is rotatably sleeved on the inner brush holder, the heat-conducting rotary cylinder is linked with the inner brush holder, a group of spoiler fins are installed on the inner wall of the heat-conducting rotary cylinder, a group of heat dissipation fins are installed on the outer periphery of the heat-conducting rotary cylinder, an oil storage cavity is provided between the heat-conducting rotary cylinder and the transformer body, a fan rack is installed on the device rack, and the An oil outlet pipe and an oil return pipe are installed on the fan frame, each of the oil storage chambers is connected to the oil outlet pipe and the oil return pipe, an active vibration frame and a driven vibration frame are slidably connected to the fan frame, a group of coil cooling modules are installed between the active vibration frame and the driven vibration frame, each of the coil cooling modules is connected to the oil outlet pipe and the oil return pipe, a group of axial flow fans are installed on the fan frame and at a position directly opposite to each coil cooling module, and a transmission component for driving the active vibration frame to vibrate reciprocally and driving the inner brush frame to rotate is installed on the fan frame.

2. A combined transformer for photovoltaic power generation according to claim 1, characterized in that: The transmission component includes a motor installed on the fan frame, the output shaft end of the motor is respectively connected to the first toothed belt and the second toothed belt, each of the heat-conducting rotary drum is connected to the first toothed belt, the fan frame is rotatably connected to a camshaft, the output shaft end of the motor and the camshaft are both installed with bevel gears, the two bevel gears are meshed with each other, a cam block is installed on the camshaft, and the cam block is in contact with the active vibration frame.

3. A combined transformer for photovoltaic power generation according to claim 2, characterized in that: The heat-conducting rotary drum and the inner brush holder are both equipped with linked bevel gear rings, a gear shaft is rotatably mounted on the holder, an intermediate bevel gear is mounted on the gear shaft, the two linked bevel gear rings are both transmission-connected with the intermediate bevel gear, and the two linked bevel gear rings are symmetrically arranged with the horizontal plane where the axis of the intermediate bevel gear is located as the axis.

4. A combined transformer for photovoltaic power generation according to claim 1, characterized in that: An oil outlet ring and an oil return ring are rotatably connected to the heat conducting rotary cylinder respectively. The oil outlet ring is connected to the oil outlet pipe, and the oil return ring is connected to the oil return pipe. A group of oil holes distributed in a circular array are opened on the heat conducting rotary cylinder at positions corresponding to the inner sides of the oil outlet ring and the oil return ring.

5. A combined transformer for photovoltaic power generation according to claim 2, characterized in that: The coil cooling module includes a hollow shaft rotatably connected to the fan frame, the hollow shaft is connected to the second chain belt transmission, a group of return springs are installed between the active vibration frame and the fan frame, an oil guide rotary seat is rotatably connected to the active vibration frame, the oil guide rotary seat is driven by the hollow shaft, an oil return rotary seat is rotatably installed on the inner wall of the driven vibration frame, an oil chamber is provided inside the oil guide rotary seat and the oil return rotary seat, the oil outlet pipe is connected to the oil chamber in the oil guide rotary seat through the hollow shaft, the oil return pipe is connected to the oil chamber in the oil return rotary seat, the eccentric positions of the oil guide rotary seat and the oil return rotary seat are provided with eccentric joints connected to the oil chamber, and the two eccentric joints A spiral heat exchange coil is rotatably connected therebetween, a driven gear is installed on the spiral heat exchange coil, a fixed gear ring is installed on the fan frame, and the driven gear is transmission-connected to the fixed gear ring; the swirl blowing module includes a blowing ring cavity opened at the lower part of the oil guide rotary seat, a group of blowing nozzles distributed in a circular array are installed on the oil guide rotary seat and at a position corresponding to the bottom of the heat dissipation fins, the air outlet axis of the blowing nozzle is parallel to the axis of the oil guide rotary seat, an air distribution ring is rotatably connected to the blowing ring cavity, an air cooler is installed on the device frame, a filter is installed at the air inlet port of the air cooler, and the air outlet port of the air cooler is connected to the air distribution ring through a pipeline.

6. A combined transformer for photovoltaic power generation according to claim 5, characterized in that: A shaft sleeve is fixedly installed at the axial position of the oil-guiding rotary seat, and a shaft groove with openings at both ends and slidably connected to the hollow shaft is fixedly provided inside the shaft sleeve. The cross-sections of the shaft groove and the hollow shaft are both regular polygons, and an oil circuit with openings at both ends is fixedly provided inside the hollow shaft, and the two ends of the oil circuit are respectively connected to the oil chamber and the oil outlet pipe at corresponding positions.

7. A combined transformer for photovoltaic power generation according to claim 6, characterized in that: The tooth length of the fixed gear ring is 6 to 8 times the tooth length of the driven gear. The oil guide spindle, spoiler fins, heat dissipation fins, inner brush holder and spiral oil removal sheet are all made of ceramic materials. The inner brush holder includes two brush rings, and a group of connecting rods distributed in a circular array are installed between the two brush rings.

8. A combined transformer for photovoltaic power generation according to claim 1, characterized in that: An oil pump and a temperature sensor are respectively installed on the oil return pipe, a single chip microcomputer is installed on the fan frame, and the data ends of the oil pump and the temperature sensor are both connected to the single chip microcomputer data.

9. A combined transformer for photovoltaic power generation according to claim 1, characterized in that: It also includes three high-voltage connecting rods. The number of the transformer bodies is three. Each of the high-voltage connecting rods is connected to two transformer bodies at corresponding positions. The frame is equipped with an iron yoke that matches the three transformer bodies.

Images