Dual cooling device for pumped storage motor unit

Abstract

The application discloses a double cooling device of pumped storage motor set, which comprises a movable sleeve movably connected to the outside of the motor set, an air inlet formed between the open end of the movable sleeve and the shell of the motor set, an air outlet arranged on the end cover of the movable sleeve, a mounting frame arranged in the movable sleeve, a cooling fan arranged on one side of the mounting frame and facing the air outlet, a wind guide pipe penetrating through the mounting frame, a shunt pipe obliquely upwardly and facing the air inlet and a shunt pipe obliquely downwardly and facing the air inlet arranged on the periphery of the wind guide pipe along the length direction in sequence, and the shunt pipe comprises a straight flow portion and a reflux portion, the straight flow portion is in linear communication with the wind guide pipe, and the reflux portion is in arc communication with the wind guide pipe; the movable sleeve is further provided with a cooling pipe, cooling liquid flows in the cooling pipe, and the cooling pipe comprises a first cooling pipe distributed on the shell of the motor set and a second cooling pipe distributed on the inner wall of the movable sleeve. The application has the characteristics of improving the heat dissipation effect and preventing the heat flow from flowing back.

Description

TECHNICAL FIELD

[0001] The application relates to a cooling device, in particular a double cooling device for a pumped storage motor set. BACKGROUND

[0002] The pumped storage motor set has high water head and fast rotating speed, and a large amount of heat energy is generated by the friction between the slip ring and the carbon brush, so that the internal temperature of the motor set is increased and the normal work of the motor set is affected. At present, the carbon brush chamber of most domestic motor sets relies on natural cooling, and the cooling effect of the cooling mode is insufficient to reduce the surface temperature of the carbon brush, which easily affects the normal work of the motor set and even damages the motor. Or the motor set is cooled by the cooling fan coaxially arranged with the shaft of the motor set, but the cooling mode is performed simultaneously with the work of the motor set. When the motor set works, the cooling fan works to dissipate heat, and when the motor set stops working, the cooling fan also stops working and no longer cools. Since the motor set works for a long time and has high rotating speed, a large amount of heat is generated. Even if it does not work, the temperature in the motor is still high. The cooling treatment of the motor set cannot completely reduce the temperature to the ideal state, and after the cooling fan stops working, the exhaust hot air is easy to backflow, so that the temperature in the motor set is increased again. Therefore, the existing cooling treatment of the pumped storage motor set has the problem of unsatisfactory cooling effect. SUMMARY

[0003] The application aims to provide a double cooling device for a pumped storage motor set. The application has the characteristics of improving the cooling effect and preventing the heat flow from backflowing.

[0004] The technical scheme of the application is as follows: a double cooling device for a pumped storage motor set, comprising a movable sleeve movably connected to the outside of the motor set. One end of the movable sleeve close to the motor set is an open end, and the open end and the motor set shell form an air inlet. An end cover is arranged at the end of the movable sleeve away from the motor set, and an air outlet is arranged on the end cover. A mounting frame is arranged in the movable sleeve, and a cooling fan is arranged on one side of the mounting frame facing the air outlet. A wind guide pipe penetrates through the mounting frame, and the periphery of the wind guide pipe is sequentially provided with a flow dividing pipe inclined upward to the air inlet and a flow dividing pipe inclined downward to the air inlet along the length direction. The flow dividing pipe comprises a straight flow portion and a backflow portion. The straight flow portion is in linear communication with the wind guide pipe, and the backflow portion is in arc communication with the wind guide pipe. A cooling pipe is further arranged in the movable sleeve, and cooling liquid flows in the cooling pipe. The cooling pipe comprises a first cooling pipe distributed on the motor set shell and a second cooling pipe distributed on the inner wall of the movable sleeve.

[0005] The double cooling device of the pumped storage motor unit comprises a main machine room and a brush room, a plurality of first heat dissipation fins are arranged on the shell of the main machine room, a plurality of second heat dissipation fins are arranged on the shell of the brush room, a heat conduction fin extending radially is arranged on each first heat dissipation fin, an arc surface is arranged on the bottom of the heat conduction fin, and a cooling channel is formed between the bottom of the heat conduction fin and the main machine shell.

[0006] The double cooling device of the pumped storage motor unit comprises an electromagnet arranged in the mounting frame, a mounting shaft of the heat dissipation fan extends into the mounting frame, a first spring is sleeved on the mounting shaft, a first magnetic block for cooperating with the electromagnet is arranged on the end of the mounting shaft, one end of the first spring is connected with the mounting frame, and the other end of the first spring is connected with the first magnetic block.

[0007] The double cooling device of the pumped storage motor unit comprises a heat dissipation motor, a rotating sleeve is arranged on the driving shaft of the heat dissipation motor, an electromagnet ring is arranged outside the rotating sleeve, a mounting sleeve is arranged outside the electromagnet ring, a plurality of through grooves are arranged on the mounting sleeve in the circumferential direction, a mounting seat is arranged at the outer end of the through groove, a heat dissipation blade is movably connected in the mounting seat, an extension rod is arranged at the inner end of the heat dissipation blade, the extension rod extends into the through groove through the mounting seat, a second magnetic block for cooperating with the electromagnet ring is arranged at the end of the extension rod, a second spring is sleeved on the extension rod, one end of the second spring is connected with the heat dissipation blade, and the other end of the second spring is connected with the mounting seat.

[0008] The double cooling device of the pumped storage motor unit comprises a connecting seat arranged on the side of the rotating sleeve facing the air outlet, a connecting groove is arranged in the connecting seat, a movable rod is connected in the connecting groove through a spline sleeve, a rotating plate is arranged at one end of the movable rod, a cleaning brush for cleaning the air outlet is arranged on the rotating plate and abuts against the end cover; a third spring is arranged at the other end of the movable rod, one end of the third spring is connected with the movable rod, and the other end of the third spring is connected with the connecting groove.

[0009] The double cooling device of the pumped storage motor unit comprises a spiral groove and a guide groove arranged on the inner wall of the movable sleeve; a fixing buckle for fixing the first cooling pipe is arranged in the spiral groove, and the length direction of the guide groove is consistent with the length direction of the air guide pipe.

[0010] The double cooling device of the pumped storage motor unit comprises a movable trolley arranged at the bottom of the movable sleeve, a water tank and a water pump are arranged on the movable trolley, and the water pump, the water tank and the cooling pipe are connected.

[0011] The double cooling device of the pumped storage motor unit further comprises a controller and a temperature collector, the temperature collector comprises a temperature sensor installed outside the movable sleeve, the temperature sensor is provided with a movable probe movably connected to the temperature sensor, an output end of the temperature sensor is connected to an input end of the controller, and an output end of the controller is connected to the electromagnet, the heat dissipation motor, the electromagnet ring and the water pump.

[0012] The movable probe extends through the movable sleeve to between adjacent second heat dissipation fins, the movable probe is provided with a mounting plate, the mounting plate is provided with a fourth spring sleeved outside the movable probe, one end of the fourth spring is connected to the mounting plate, and the other end of the fourth spring is connected to the movable sleeve.

[0013] Compared with the prior art, the pump storage motor unit has the following beneficial effects:

[0014] The double cooling structure of the heat dissipation fan and the water cooling of the cooling pipe is adopted to cool the motor unit, the cooling pipe is arranged at the air inlet, heat of the motor unit can be conducted and dissipated, and the temperature of the air inlet can be further reduced, so that the heat conduction and heat dissipation effect of the air cooling is improved; the air guide pipe and the shunt pipe are arranged on the mounting frame in cooperation, air flows into the air inlet of the air guide pipe, is discharged from the air outlet along the air guide pipe, and due to the reverse resistance of the shunt pipe, the hot air flow at the air outlet of the air guide pipe can be prevented from flowing back to the air inlet of the air guide pipe; and after the air guide pipe and the shunt pipe, the air flow speed in the movable sleeve is accelerated, the discharge speed of the hot air is accelerated, and the heat dissipation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present application;

[0016] Figure 2 is a structural schematic diagram of the shell of the main machine room;

[0017] Figure 3 is a structural schematic diagram of the heat dissipation fan;

[0018] Figure 4 is a structural schematic diagram of the rotating plate;

[0019] Figure 5 is a structural schematic diagram of the temperature collector.

[0020] The labels in the attached diagram are as follows: 1. Motor unit; 11. Main unit compartment; 12. Brush compartment; 13. First heat dissipation fin; 14. Second heat dissipation fin; 15. Heat-conducting plate; 16. Arc-shaped surface; 17. Cooling channel; 2. Movable sleeve; 21. End cover; 22. Air outlet; 23. First cooling pipe; 24. Second cooling pipe; 25. Guide groove; 3. Mounting bracket; 31. Air duct; 32. Diverter pipe; 33. Direct current section; 34. Return current section; 35. Electromagnet; 36. Mounting shaft; 37. First spring; 3 8. First magnetic block; 4. Cooling fan; 41. Rotating sleeve; 42. Electromagnetic ring; 43. Mounting sleeve; 44. Through groove; 45. Mounting base; 46. Cooling blades; 461. Telescopic rod; 462. Second magnetic block; 463. Second spring; 5. Connecting base; 51. Connecting groove; 52. Movable rod; 53. Rotating plate; 54. Cleaning brush; 55. Third spring; 6. Moving trolley; 61. Water tank; 7. Temperature sensor; 71. Movable probe; 72. Mounting plate; 73. Fourth spring. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments, but these embodiments are not intended to limit the scope of the invention.

[0022] Example:

[0023] like Figures 1-5 As shown, a dual cooling device for a pumped-storage generator set includes a movable sleeve 2 movably connected to the outside of the generator set 1. The end of the movable sleeve 2 closest to the generator set 1 is an open end, forming an air inlet between the open end and the outer shell of the generator set 1. The end of the movable sleeve 2 furthest from the generator set 1 is provided with an end cap 21, and an air outlet 22 is provided on the end cap 21. A mounting frame 3 is provided inside the movable sleeve 2. A cooling fan 4 is provided on the side of the mounting frame 3 facing the air outlet 22. A duct 31 passes through the mounting frame 3. Along the length of the duct 31, there are two branch pipes 32 inclined upward toward the air inlet and inclined downward toward the air inlet. The branch pipe 32 includes a direct flow section 33 and a return flow section 34. The direct flow section 33 is straight and communicates with the duct 31, and the return flow section 34 is arc-shaped and communicates with the duct 31. The inner diameters of the duct 31 and the branch pipe 32 are the same.

[0024] The movable sleeve 2 is also provided with cooling pipes, in which coolant flows. The cooling pipes include a first cooling pipe 23 distributed on the outer casing of the motor unit 1, and a second cooling pipe 24 distributed on the inner wall of the movable sleeve 2. As one embodiment of the cooling pipes, the first cooling pipe and the second cooling pipe are designed as a single unit, with the first cooling pipe extending from the open end into the movable sleeve to form the second cooling pipe.

[0025] The motor set 1 is cooled by the double cooling structure of the air cooling of the heat dissipation fan 4 and the water cooling of the cooling pipe, and the cooling pipe is arranged in contact with the air inlet and the motor set 1, so that the heat of the motor set 1 can be conducted and dissipated, and the temperature of the air inlet can be further reduced, thereby improving the heat conduction and heat dissipation effect of the air cooling; the air guide pipe 31 and the shunt pipe 32 are arranged on the mounting frame 3 in cooperation, so that the air flow enters the air inlet of the air guide pipe 31, and is discharged from the air outlet 22 along the air guide pipe 31, and due to the reverse blocking effect of the shunt pipe 32, the hot air flow at the air outlet 22 of the air guide pipe 31 can be prevented from flowing back to the air inlet of the air guide pipe 31; and after passing through the air guide pipe 31 and the shunt pipe 32, the air flow speed in the movable sleeve 2 is accelerated, the exhaust speed of the hot air is accelerated, and the heat dissipation efficiency is improved.

[0026] The motor set 1 comprises a main machine chamber 11 and a brush chamber 12, a plurality of first heat dissipation fins 13 are arranged on the shell of the main machine chamber 11, a plurality of second heat dissipation fins 14 are arranged on the shell of the brush chamber 12, a heat conduction fin 15 extending in a radial direction is arranged on each first heat dissipation fin 13, an arc surface 16 is arranged on the bottom of the heat conduction fin 15, and a cooling channel 17 is formed between the bottom of the heat conduction fin 15 and the main machine shell. The first heat dissipation fin 13 and the second heat dissipation fin 14 are used for static heat dissipation of the motor set 1, the heat conduction fin 15 extends on the first heat dissipation fin 13, the arc surface 16 is arranged on the heat conduction fin 15, the heat dissipation area is increased, and the heat dissipation effect is improved; the cooling channel 17 is further formed between adjacent first heat dissipation fins 13, on one hand, the cooling channel 17 is used for cooling air flow, and on the other hand, the first cooling pipe 23 passes through the cooling channel 17 and is fixed by the heat conduction fin 15, so that the contact distance between the cooling air and the cooling liquid and the motor set 1 is shortened, and the heat dissipation efficiency is improved.

[0027] The mounting frame 3 is provided with an electromagnet 35 close to the motor set 1, the heat dissipation fan 4 is provided with a mounting shaft 36 extending into the mounting frame 3, the mounting shaft 36 is sleeved with a first spring 37, the end of the mounting shaft 36 is provided with a first magnetic block 38 used for cooperating with the electromagnet 35 for adsorption, one end of the first spring 37 is connected with the mounting frame 3, and the other end of the first spring 37 is connected with the first magnetic block 38. When the temperature of the motor set 1 is high and the heat dissipation needs to be increased, in addition to controlling the rotating speed of the heat dissipation fan 4, the magnetic field suction force of the electromagnet 35 can be increased, so that the electromagnet 35 adsorbs the first magnetic block 38, thereby shortening the distance between the heat dissipation fan 4 and the motor set 1 and improving the heat dissipation effect.

[0028] The heat dissipation fan 4 comprises a heat dissipation motor, a rotating sleeve 41 is arranged on the driving shaft of the heat dissipation motor, an electromagnet ring 42 is arranged outside the rotating sleeve 41, a mounting sleeve 43 is arranged outside the electromagnet ring 42, the mounting sleeve 43 is made of insulating material, a plurality of through grooves 44 are arranged along the circumferential direction of the mounting sleeve 43, mounting seats 45 are arranged at the outer ends of the through grooves 44, heat dissipation blades 46 are movably connected in the mounting seats 45, telescopic rods 461 are arranged at the inner ends of the heat dissipation blades 46, the telescopic rods 461 extend into the through grooves 44 through the mounting seats 45, second magnetic blocks 462 are arranged at the ends of the telescopic rods 461 and used for cooperating with the electromagnet ring 42 for adsorption, second springs 463 are arranged on the telescopic rods 461, one end of each second spring 463 is connected with the heat dissipation blade 46, and the other end of each second spring 463 is connected with the bottom of the mounting seat 45. When the temperature of the motor set 1 is low and the heat dissipation needs to be reduced, in addition to controlling the rotating speed of the heat dissipation fan 4, the magnetic field adsorption force of the electromagnet ring 42 can be increased, so that the electromagnet ring 42 adsorbs the second magnetic block 462, thereby shortening the length of the heat dissipation blade 46 extending out of the mounting seat 45, reducing the working area of the heat dissipation fan 4, and reducing the heat dissipation efficiency.

[0029] The rotating sleeve 41 is provided with a connecting seat 5 on the side facing the air outlet 22, the connecting seat 5 is provided with a connecting groove 51, a movable rod 52 is connected in the connecting groove 51 through a spline sleeve, one end of the movable rod 52 is provided with a rotating plate 53, the rotating plate 53 is provided with a cleaning brush 54 used for cleaning the air outlet 22 and abutting against the end cover 21, the other end of the movable rod 52 is provided with a third spring 55, one end of the third spring 55 is connected with the movable rod 52, and the other end of the third spring 55 is connected with the bottom of the connecting groove 51. The heat dissipation motor drives the heat dissipation blade 46 to rotate for heat dissipation, and also drives the cleaning brush 54 to rotate, thereby cleaning the attachments on the end cover 21, avoiding that the dust blocks the air outlet 22, ensuring the permeability of the air outlet 22, making the hot air flow smoothly, and being beneficial to the heat dissipation of the movable sleeve 2; and when the heat dissipation fan 4 is adjusted in position under the action of the electromagnet 35 and the heat dissipation condition is changed, the cleaning brush 54 still abuts against the end cover 21 under the action of the third spring 55, thereby ensuring the normal cleaning work of the cleaning brush 54.

[0030] The inner wall of the movable sleeve 2 is provided with a spiral groove and a guide groove 25, the spiral groove is provided with a fixing buckle for fixing the first cooling pipe 23, and the length direction of the guide groove 25 is consistent with the length direction of the air guide pipe 31. The spiral groove is arranged to fix the first cooling pipe 23, and the guide groove 25 is arranged to shunt and guide the incoming air, which disperses the air flow, reduces the air flow noise, and makes the air flow accurately enter into the air guide pipe 31, thereby accelerating the exhaust speed of the hot air flow.

[0031] The bottom of the movable sleeve 2 is provided with a moving trolley 6, and the moving trolley 6 is provided with a water tank 61 and a water pump. The water pump, the water tank 61 and the cooling pipe are connected. Through the moving trolley 6, the movable sleeve 2 can be moved. When the heat dissipation is not needed or the trimming is needed, the movable sleeve 2 can be moved away from the motor set 1. According to the heat dissipation requirement, the movable sleeve 2 can be moved towards the motor set 1, so that the heat dissipation treatment effect is improved. Moreover, the water tank 61 and the water pump are arranged on the moving trolley 6 and combined with the movable sleeve 2, so that the water cooling system is more stable.

[0032] The double cooling device further comprises a controller and a temperature collector. The temperature collector comprises a temperature sensor 7 installed outside the movable sleeve 2. The temperature sensor 7 is provided with a movable probe 71 movably connected to the temperature sensor 7. The output end of the temperature sensor 7 is connected to the input end of the controller. The output end of the controller is connected to the electromagnet 35, the heat dissipation motor, the electromagnet ring 42 and the water pump. The temperature of the motor set 1 is collected by the temperature collector. According to the temperature of the motor set 1, the wind speed of the heat dissipation fan 4 and the water flow rate of the cooling pipe are adjusted, so that the cooling efficiency of the heat dissipation fan 4 and the cooling pipe is controlled. The cooling is more in line with the actual demand. On the basis of reducing the use cost, the heat dissipation effect is best.

[0033] The movable probe 71 extends through the movable sleeve 2 to between the adjacent second heat dissipation fins 14. The movable probe 71 is provided with a mounting plate 72. The mounting plate 72 is provided with a fourth spring 73 sleeved outside the movable probe 71. One end of the fourth spring 73 is connected to the mounting plate 72. The other end of the fourth spring 73 is connected to the movable sleeve 2. The movable probe 71 is inserted between the second heat dissipation fins 14. The elasticity of the fourth spring 73 is utilized, so that the movable probe 71 is in contact with the shell of the brush chamber 12. Therefore, the actual temperature of the motor set 1 can be more accurately measured. The accuracy of regulating the heat dissipation fan 4 and the cooling pipe is improved.

Claims

1. A dual cooling device for a pumped storage motor-generator set, comprising: a first cooling device; a second cooling device; and a control system configured to selectively operate the first cooling device and the second cooling device. The utility model provides an active sleeve (2) is connected outside motor set (1) actively, and the one end of active sleeve (2) is close to motor set (1) is open end, and open end and the shell between motor set (1) form air inlet, and the one end of active sleeve (2) is away from motor set (1) is equipped with end cover (21), and end cover (21) is equipped with air outlet (22), and active sleeve (2) is equipped with mounting bracket (3) in, and the one side of mounting bracket (3) is equipped with heat dissipation fan (4) towards air outlet (22), and the through -going pipe (31) of mounting bracket (3) is penetrated, and the periphery of through -going pipe (31) is sequentially equipped with the shunt pipe (32) of being inclined upward towards air inlet and the shunt pipe (32) of being inclined downward towards air inlet along length direction, and shunt pipe (32) includes straight flow portion (33) and reflux portion (34), and straight flow portion (33) is linear and is communicated with through -going pipe (31), and reflux portion (34) is communicated with through -going pipe (31) in arc line shape, and active sleeve (2) is further equipped with cooling pipe, and cooling pipe is flowed with cooling liquid in, and cooling pipe includes the first cooling pipe (23) of distribution on the shell of motor set (1) and the second cooling pipe (24) of distribution on the inner wall of active sleeve (2), the shell of motor set (1) includes host room (11) and brush room (12), and the shell of host room (11) is equipped with a plurality of first radiating fins (13), and the shell of brush room (12) is equipped with a plurality of second radiating fins (14), and every first radiating fin (13) is equipped with the radial extension of heat conduction sheet (15), and the bottom of heat conduction sheet (15) is equipped with arc surface (16), and the bottom of heat conduction sheet (15) and host shell form cooling channel (17), the mounting bracket (3) is equipped with electromagnet (35) in, and heat dissipation fan (4) is equipped with the mounting shaft (36) of being inserted into mounting bracket (3) on, and the first spring (37) of sleeve is equipped with on mounting shaft (36), and the end of mounting shaft (36) is equipped with the first magnetic block (38) for cooperating with electromagnet (35) and adsorbing, and the one end of first spring (37) is connected with mounting bracket (3), and the other end of first spring (37) is connected with first magnetic block (38).

2. A double cooling device for pumped storage motor-generator set according to claim 1, characterized in that: The heat dissipation fan (4) includes a heat dissipation motor, a rotating sleeve (41) is provided on the drive shaft of the heat dissipation motor, an electromagnet ring (42) is provided outside the rotating sleeve (41), an installation sleeve (43) is provided outside the electromagnet ring (42), a plurality of through grooves (44) are provided in the circumferential direction of the installation sleeve (43), an installation seat (45) is provided at the outer end of the through grooves (44), heat dissipation blades (46) are movably connected in the installation seat (45), an extension rod (461) is provided at the inner end of the heat dissipation blades (46), the extension rod (461) extends into the through grooves (44) through the installation seat (45), a second magnetic block (462) is provided at the end of the extension rod (461) for cooperating with the electromagnet ring (42) to be adsorbed, a second spring (463) is sleeved on the extension rod (461), one end of the second spring (463) is connected with the heat dissipation blades (46), and the other end of the second spring (463) is connected with the installation seat (45).

3. A dual cooling device for a pumped storage motor-generator set according to claim 2, characterized in that: The rotating sleeve (41) is provided with a connecting seat (5) on the side facing the air outlet (22), the connecting seat (5) is provided with a connecting groove (51), the connecting groove (51) is connected with a movable rod (52) through a spline sleeve, one end of the movable rod (52) is provided with a rotating plate (53), the rotating plate (53) is provided with a cleaning brush (54) abutting against the end cover (21) for cleaning the air outlet (22); the other end of the movable rod (52) is provided with a third spring (55), one end of the third spring (55) is connected with the movable rod (52), and the other end of the third spring (55) is connected with the connecting groove (51).

4. A double cooling device for pumped storage motor-generator set according to claim 1, characterized in that: The inner wall of the movable sleeve (2) is provided with a spiral groove and a guide groove (25); the spiral groove is provided with a fixing buckle for fixing the first cooling pipe (23), and the length direction of the guide groove (25) is consistent with the length direction of the air guide pipe (31).

5. A dual cooling device for a pumped storage motor-generator set according to claim 2, characterized in that: The bottom of the movable sleeve (2) is provided with a moving trolley (6), the moving trolley (6) is provided with a water tank (61) and a water pump, and the water pump, the water tank (61) and the cooling pipe are connected.

6. A dual cooling device for a pumped storage motor-generator set according to claim 5, characterized in that: The double cooling device further comprises a controller and a temperature collector, the temperature collector comprises a temperature sensor (7) installed outside the movable sleeve (2), the temperature sensor (7) is provided with a movable probe (71) movably connected with the temperature sensor (7), the output end of the temperature sensor (7) is connected with the input end of the controller, and the output end of the controller is connected with the electromagnet (35), the heat dissipation motor, the electromagnet ring (42) and the water pump.

7. A dual cooling device for a pumped storage motor-generator set according to claim 6, characterized in that: The movable probe (71) extends to between adjacent second heat dissipation fins (14) through the movable sleeve (2), the movable probe (71) is provided with a mounting plate (72), the mounting plate (72) is provided with a fourth spring (73) sleeved outside the movable probe (71), one end of the fourth spring (73) is connected with the mounting plate (72), and the other end of the fourth spring (73) is connected with the movable sleeve (2).

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