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CN-121520146-B - Ventilating and radiating system of wind driven generator

CN121520146BCN 121520146 BCN121520146 BCN 121520146BCN-121520146-B

Abstract

A ventilating and heat dissipating system of a wind driven generator relates to the technical field of wind driven generators and comprises a cabin, wherein a gear box and a generator are arranged in the cabin, a hub is rotatably arranged at the end part of the cabin, a plurality of blades are fixedly arranged on the outer wall of the hub, the input end of the gear box is connected with the hub through a main shaft, the input end of the generator is connected with the output end of the gear box through a connecting shaft, a jacket is sleeved on the outer wall of the generator, a pumping assembly and a heat dissipating assembly are respectively arranged in the cabin and at the top of the cabin, the pumping assembly, the heat dissipating assembly and the jacket are connected into a circulating loop, the heat dissipating assembly comprises a supporting U-shaped plate and a rotating plate, the top of the rotating plate is provided with a ventilating groove in a penetrating mode, a liquid inlet groove, a liquid outlet groove and a plurality of connecting grooves are formed in the rotating plate, a plurality of heat dissipating pipes are arranged in the ventilating groove, a plurality of heat dissipating fins are arranged on the outer wall of the heat dissipating pipes, and adjacent heat dissipating pipes are communicated through the connecting grooves and form an S-shaped waterway. The invention solves the problem of poor dynamic adjustability of the heat dissipation speed of the existing wind driven generator.

Inventors

  • LIU PANPAN
  • GAO NA
  • YU YONG

Assignees

  • 山东瑞智投新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20260115

Claims (6)

  1. 1. The ventilation and heat dissipation system of the wind driven generator is characterized by comprising a cabin (5), wherein a gear box (2) and a generator (7) are arranged in the cabin (5), a hub (1) is rotationally arranged at the end part of the cabin (5), a plurality of blades (3) are fixedly arranged on the outer wall of the hub (1), the input end of the gear box (2) is connected with the hub (1) through a main shaft (9), the input end of the generator (7) is connected with the output end of the gear box (2) through a connecting shaft (10), a jacket (6) is sleeved on the outer wall of the generator (7), a pumping assembly (8) and a heat dissipation assembly (4) are respectively arranged in the cabin (5) and at the top, and the pumping assembly (8), the heat dissipation assembly (4) and the jacket (6) are connected into a circulation loop; The heat dissipation assembly (4) comprises a supporting U-shaped plate (35) and a rotating plate (34), wherein the top of the rotating plate (34) is penetrated and provided with a ventilation groove (38), a liquid inlet groove (42), a liquid outlet groove (46) and a plurality of connecting grooves (45) are formed in the rotating plate (34), a plurality of heat dissipation pipes (44) are arranged in the ventilation groove (38), a plurality of heat dissipation fins (43) are arranged on the outer wall of each heat dissipation pipe (44), adjacent heat dissipation pipes (44) are communicated through the corresponding connecting grooves (45) and form an S-shaped waterway, the liquid inlet groove (42) and the liquid outlet groove (46) are correspondingly communicated with the two ends of the S-shaped waterway, the opposite ends of the rotating plate (34) are fixedly provided with outer fixing pipes (39), the outer fixing pipes (39) are rotationally connected with the supporting U-shaped plate (35), and the liquid outlet groove (46) and the liquid inlet groove (42) are correspondingly communicated with the pumping assembly (8) and the jacket (6). The inside of the engine room (5) is provided with a transmission assembly (11), the connecting shaft (10) transmits one of the external fixed pipes (39) through the transmission assembly (11), the connecting shaft (10) drives the pumping assembly (8) at the same time, the faster the rotating speed of the connecting shaft (10) is, the larger the included angle between the rotating plate (34) and the horizontal plane is, the faster the circulating flow speed of cooling liquid is, and the faster the heat dissipation speed is; the transmission assembly (11) comprises a support L-shaped plate (12), the connecting shaft (10) penetrates through the support L-shaped plate (12) and is in rotary connection with the support L-shaped plate, a rotary shaft (21) which is in rotary arrangement is penetrated through the top of the support L-shaped plate (12), a lifting plate (25) is arranged above the rotary shaft (21), a sliding rod (27) is fixedly connected to the bottom of the lifting plate (25), the bottom end of the sliding rod (27) extends into the rotary shaft (21) and is in sliding connection with the rotary shaft, connecting rods (24) are hinged to opposite end parts of the lifting plate (25), a counterweight ball (22) is fixedly connected to one end of each connecting rod (24), a plurality of connecting plates (23) are hinged to one end of each connecting rod (23), a driving bevel gear (19) is fixedly sleeved on the outer wall of the connecting shaft (10), a driven bevel gear (20) which is meshed with the driving bevel gear (19) is fixedly sleeved on the lower outer wall of the rotary shaft (21), a gear (32) is fixedly sleeved on the outer wall of one outer fixing tube (39), a rack (26) which is slidably arranged on the inner wall of the supporting U (35) and is meshed with the gear (26) and passes through the lower rack (26) and is connected to the cabin (5); an axial flow fan (36) is fixedly arranged at the top of the engine room (5).
  2. 2. The ventilation and heat dissipation system of a wind driven generator according to claim 1, wherein a supporting cylinder (28) is fixedly arranged at the top of the supporting L-shaped plate (12), the upper outer wall of the supporting cylinder (28) is of an arc-shaped structure, the rotating shaft (21) is positioned in the supporting cylinder (28), and a limiting plate (37) is fixedly connected to the inner top of the supporting U-shaped plate (35).
  3. 3. A wind driven generator ventilation and heat dissipation system according to claim 1, wherein the inner wall of the U-shaped supporting plate (35) is fixedly provided with a supporting bar (33), and the rack (26) is in sliding connection with the supporting bar (33).
  4. 4. The ventilation and heat dissipation system of a wind driven generator according to claim 1, wherein the pumping assembly (8) comprises a pump shell (13), an impeller (29) is rotatably arranged in the pump shell (13), a liquid inlet of the pump shell (13) is communicated with a liquid outlet groove (46) through a liquid inlet pipe (18), a liquid outlet of the pump shell (13) is communicated with a jacket (6) through a connecting pipe (16), a driven shaft (14) is fixedly connected to the end part of the impeller (29), one end of the driven shaft (14) penetrates through the pump shell (13) to extend to the outside, driving wheels (30) are fixedly sleeved on the outer walls of the connecting shaft (10) and the driven shaft (14), and the two driving wheels (30) are connected through a driving belt (31).
  5. 5. A ventilating and heat dissipating system of wind driven generator according to claim 4, wherein the inner fixing pipes (40) fixedly connected with the rotating plate (34) are arranged in the outer fixing pipes (39), the two inner fixing pipes (40) are correspondingly communicated with the liquid outlet groove (46) and the liquid inlet groove (42), the opposite ends of the supporting U-shaped plate (35) are respectively provided with a communicating hole (41) in penetrating mode, the inner fixing pipes (40) are communicated with the communicating holes (41) and are in rotary sealing connection with the supporting U-shaped plate (35), the liquid inlet pipe (18) is communicated with one of the communicating holes (41), and the other communicating hole (41) is communicated with the jacket (6) through the liquid outlet pipe (17).
  6. 6. A wind driven generator ventilation and heat dissipation system according to claim 4, characterized in that a fixed plate (15) is fixedly arranged at the bottom of the engine room (5), and the driven shaft (14) is rotatably connected with the fixed plate (15).

Description

Ventilating and radiating system of wind driven generator Technical Field The invention relates to the technical field of wind driven generators, in particular to a ventilation and heat dissipation system of a wind driven generator. Background The wind driven generator is a device for converting the kinetic energy of wind into electric energy, and the core application of the wind driven generator is to produce clean renewable electric power for society. The wind energy is captured by blowing huge blade rotation by wind, the blade drives an internal generator to convert mechanical energy into electric energy, then the electric energy is transmitted to a power grid through a cable, and finally the electric energy is transmitted to household, factory, enterprise and other power terminals, so that energy is provided for our production and life. In the power generation process, a large amount of heat is generated in the generator due to electromagnetic and resistance loss, a water cooling jacket structure is designed outside the generator shell to prevent equipment from overheating and damaging and maintain high-efficiency and stable operation, the jacket and an external radiator are connected into a closed circulation loop through a pipeline, a circulating pump drives cooling liquid to continuously flow between the jacket and the radiator, the cooling liquid absorbs the heat generated by the generator when passing through the water cooling jacket, and the cooling liquid is conveyed into the radiator for forced cooling, so that the heat is released into the external environment, and the safe operation of the generator in the optimal temperature range is ensured. In the use process of the existing wind driven generator, the defects are gradually exposed, and the wind driven generator is mainly characterized in the following aspects: The heat dissipation speed dynamic regulation is poor, specifically, because the outdoor wind speed has obvious instability, when the wind speed is higher, the blade rotation speed of the wind driven generator is increased, the generated energy is increased, the internal loss of the generator is increased, the generated energy is increased sharply, the demand for heat dissipation capacity is increased at the moment, otherwise, under the condition of low wind speed, the blade rotation speed is reduced, the generated energy is correspondingly reduced, the heat dissipation demand is weakened, however, the heat dissipation system of the existing wind driven generator usually adopts a radiator with a fixed structure and a circulating pump with constant rotation speed, the heat dissipation area of the radiator and the flow rate of cooling liquid cannot be regulated, so that the heat dissipation system operates at the fixed heat dissipation speed, the insufficient heat dissipation capacity easily occurs under the continuous high wind speed working condition, the generator is overheated and even insulated ageing or heat damage is caused, and when the wind speed is low for a long time, the phenomenon of 'supercooling' possibly occurs due to the excessive heat dissipation, the working temperature of the generator is too low, and the operation efficiency is affected. In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide a ventilation and heat dissipation system of a wind driven generator, the heat dissipation speed of the wind driven generator can be dynamically adjusted according to the change of external wind speed, when the wind speed is increased, the effective heat dissipation area of the heat radiator is increased, meanwhile, the circulation speed of cooling liquid is increased, and the heat dissipation speed is increased, otherwise, when the wind speed is reduced, the heat dissipation speed is reduced, through the dynamic adjustment mechanism responding to wind conditions in real time, the problems of overheating and insulation heat damage of a generator winding caused by insufficient heat dissipation under the high wind speed working condition are effectively avoided, and the phenomenon of excessively low working temperature of the generator caused by excessive cooling during the low wind speed period is also prevented, so that the power generation efficiency is ensured to be always in an optimal interval, and the service life of equipment is greatly prolonged. In order to solve the problems, the invention provides the following technical scheme: The ventilation and heat dissipation system of the wind driven generator comprises a cabin, wherein a gear box and a generator are arranged in the cabin, a hub is rotatably arranged at the end part of the cabin, a plurality of blades are fixedly arranged on the outer wall of the hub, the input end of the gear box is connected with the hub through a main shaft, the input end of the gener