5300kw high-voltage permanent magnet synchronous motor

Abstract

The invention relates to the technical field of permanent magnet synchronous motors, in particular to a 5300kw high-voltage permanent magnet synchronous motor which comprises a machine shell, a driving shaft is coaxially arranged in the machine shell, the end of the driving shaft is rotationally connected with the machine shell, a rotor is arranged in the machine shell, the rotor is coaxially installed on the driving shaft, and a sliding ring is further arranged on the driving shaft. A stator is also arranged in the casing and is fixed on the inner wall of the casing; one end of the driving shaft penetrates through the machine shell and is coaxially provided with a rotating disc, the side, away from the machine shell, of the rotating disc is provided with a plurality of fan blades arranged at intervals, and the fan blades are arranged in the radial direction of the rotating disc. When the 5300kw high-voltage permanent-magnet synchronous motor is used, the 5300kw high-voltage permanent-magnet synchronous motor exchanges heat generated in the shell through the condenser pipe spirally wound along the outer side of the shell, so that heat accumulated in the shell is quickly transferred outwards, and the heat can be quickly dissipated when the motor works at high power.

Description

[0001] Technical field.

[0002] The invention relates to the technical field of permanent magnet synchronous motors, and in particular to a 5300kw high-voltage permanent magnet synchronous motor.

[0003] Background technology.

[0004] A permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate a magnetic field. The speed of its rotor is consistent with the current frequency of the stator winding. A permanent magnet synchronous motor is composed of components such as a stator, a rotor and end covers. Among them, a high-voltage permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate a magnetic field. It has a high operating voltage and power level and is suitable for application scenarios that require high efficiency, high precision and high reliability.

[0005] ‌When a high-voltage permanent magnet synchronous motor is in use, due to its high-power operation, it will generate more heat, which will cause the entire motor to overheat. Although fins and fans are provided on the motor housing to dissipate heat, it is difficult to dissipate excessive heat in a short time, causing the motor to overheat in a high-power working environment, thereby causing the motor to reduce its working efficiency. To this end, we proposed a 5300kw high-voltage permanent magnet synchronous motor to solve the above problem.

[0006] Contents of the invention.

[0007] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art and to propose a 5300kw high-voltage permanent magnet synchronous motor.

[0008] In order to achieve the above object, the present invention adopts the following technical scheme: a 5300kw high-voltage permanent magnet synchronous motor is designed, including a casing, a driving shaft is coaxially arranged inside the casing, the end of the driving shaft is rotatably connected to the casing, a rotor is arranged inside the casing, the rotor is coaxially mounted on the driving shaft, a slip ring is also arranged on the driving shaft, and a stator is also arranged inside the casing, and the stator is fixed on the inner wall of the casing; A rotating disc is coaxially mounted on one end of the driving shaft, which penetrates the housing, and a plurality of spaced-apart fan blades are mounted on a side of the rotating disc away from the housing, the fan blades being arranged along the radial direction of the rotating disc; An annular groove is opened along the middle of the outer wall of the casing, and an annular cover plate is detachably installed on the outer side of the annular groove, and a spiral condenser is arranged along the inner side of the annular groove. The two ends of the condenser are respectively connected to a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are both fixedly arranged through the cover plate.

[0009] Preferably, a magnetic isolation plate is provided between the drive shaft and the rotor, the magnetic isolation plate is fixed on the drive shaft, and the rotor is fixed on the magnetic isolation plate.

[0010] Preferably, a plurality of through slots arranged at intervals are provided on the rotor, a fixed frame is provided in the through slots, and a plurality of permanent magnets are provided in the fixed frame.

[0011] Preferably, limiting grooves are provided at the corners of the through grooves, and limiting blocks are arranged in the limiting grooves, and the limiting blocks are fixed to the fixed frame.

[0012] Preferably, the stator includes a stator core, an annular plate is provided on the inner side of the stator core, and a plurality of winding frames arranged at intervals are provided on the inner side of the annular plate, the ends of the winding frames are all opened, and the winding frames pass through the annular plate and are fixed to the inner wall of the stator core, a slot is provided on the inner side of the winding frame, the slot passes through the annular plate and is connected to the port of the winding frame, and a coil is wound on the winding frame.

[0013] Preferably, a shield is provided at one end of the casing close to the turntable, the shield and the casing are detachably mounted, and a vent is provided at the end of the shield, the vent corresponding to the fan blade.

[0014] Preferably, an arc-shaped plate is installed on the outer wall of the casing, and the groove of the arc-shaped plate is arranged upward. A plurality of fins arranged at intervals are installed on the outer wall of the arc-shaped plate, and an arc-shaped support plate is coaxially arranged on the outer side of the arc-shaped plate. At least two "U"-shaped connecting seats arranged at intervals are arranged on the inner wall of the support plate, and the connecting seats correspond to the fins, and the connecting seats and the fins are detachable and installed. A support seat is arranged at the bottom of the support plate, and the support seat is a U-shaped seat with a wide mouth at the top. The support plate is placed in the support seat, and a plurality of connecting plates arranged at intervals are arranged between the support seat and the support plates, and both sides of the connecting plate are respectively connected to the support plate and the support seat by spring pieces bent into an "S" shape.

[0015] Preferably, a fixing seat is installed on both sides of the bottom of the support seat, a mounting hole is opened on the fixing seat, and a reinforcing plate is also provided on the fixing seat, one side of the reinforcing plate is fixed on the fixing seat, and the other side of the reinforcing plate is fixed on the support seat.

[0016] The design scheme proposed by the present invention has the following beneficial effects during application: 1. The 5300kw high-voltage permanent magnet synchronous motor uses a condenser that is spirally wound along the outer side of the casing to exchange energy with the heat generated in the casing, thereby quickly transferring the heat accumulated in the casing to the outside, allowing the motor to dissipate heat faster when working at high power.

[0017] 2. The 5300kw high-voltage permanent magnet synchronous motor has an end opening at the winding frame and a slot arranged thereon, so that the air in the casing can freely pass through the stator coil and flow inside and outside it, to prevent the close arrangement of the wires in the stator coil, causing serious heat accumulation in the air inside the coil and preventing normal flow and heat exchange, thus affecting the use of the motor.

[0018] Description of the drawings.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the turntable of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a schematic diagram of the internal structure of the annular groove of the present invention; Figure 5 The internal structure of the housing of the present invention is shown in FIG. Figure 1 ; Figure 6 The internal structure of the housing of the present invention is shown in FIG. Figure 2 .

[0020] In the figure: 1. casing; 2. drive shaft; 3. rotor; 4. stator core; 5. winding frame; 6. annular plate; 7. coil; 8. slot; 9. through slot; 10. limit slot; 11. fixed frame; 12. limit block; 13. permanent magnet; 14. magnetic isolation plate; 15. slip ring; 16. annular groove; 17. condenser; 18. cover plate; 19. liquid inlet pipe; 20. liquid outlet pipe; 21. arc plate; 22. fin; 23. support plate; 24. connecting seat; 25. connecting plate; 26. supporting seat; 27. spring; 28. fixing seat; 29. ​​reinforcing plate; 30. cover; 31. vent; 32. turntable; 33. fan blade.

[0021] Specific implementation method.

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-Figure 6 A 5300kw high-voltage permanent magnet synchronous motor includes a casing 1, a driving shaft 2 is coaxially arranged inside the casing 1, the end of the driving shaft 2 is rotatably connected to the casing 1, a rotor 3 is arranged inside the casing 1, and the rotor 3 is coaxially installed on the driving shaft 2, wherein a magnetic isolation plate 14 is arranged between the driving shaft 2 and the rotor 3, the magnetic isolation plate 14 is fixed on the driving shaft 2, and the rotor 3 is fixed on the magnetic isolation plate 14.

[0024] like Figure 5 and Figure 6 As shown, a slip ring 15 is also provided on the drive shaft 2 to ensure the normal power supply of the motor, and a stator is also provided in the housing 1, and the stator is fixed on the inner wall of the housing 1. The stator includes a stator core 4, and an annular plate 6 is provided on the inner side of the stator core 4. A plurality of winding frames 5 arranged at intervals are provided on the inner side of the annular plate 6. The ends of the winding frames 5 are all opened, and the winding frames 5 pass through the annular plate 6 and are fixed to the inner wall of the stator core 4. A slot 8 is provided on the inner side of the winding frame 5, and the slot 8 passes through the inner side of the stator core 4. The annular plate 6 is passed through and is connected with the port of the winding frame 5. A coil 7 is wound on the winding frame 5. When the wire is wound on the winding frame 5, the annular plate 6 can limit the winding of the wire, so that both ends of the part of the winding frame 5 located between the stator core 4 and the annular plate 6 are open, so that the air in the casing 1 can flow in and out of the winding frame 5, so as to prevent the wire from being tightly wound on the winding frame 5, resulting in slow air flow and heat accumulation inside the coil 7, causing overheating or even damage to the wire.

[0025] It should be noted that a number of through slots 9 arranged at intervals are provided on the rotor 3, and a fixed frame 11 is provided in the through slots 9, and a plurality of permanent magnets 13 are provided in the fixed frame 11, which constitute a permanent magnet synchronous motor with the stator and the rotor 3, and the fixed frame 11 is inserted into the through slots 9, which is also convenient for the disassembly and replacement of the permanent magnet 13; in addition, limiting slots 10 are provided at the corners of the through slots 9, and limiting blocks 12 are provided in the limiting slots 10, and the limiting blocks 12 are fixed to the fixed frame 11, and the fixed frame 11 is limited in the through slots 9 to ensure the stability of the permanent magnet 13 when the rotor 3 rotates.

[0026] like Figure 3 and Figure 4 As shown, an annular groove 16 is opened along the middle of the outer wall of the casing 1, and an annular cover plate 18 is detachably installed on the outer side of the annular groove 16, and a spiral condenser 17 is arranged along the inner side of the annular groove 16, and the two ends of the condenser 17 are respectively connected with a liquid inlet pipe 19 and a liquid outlet pipe 20, and the liquid inlet pipe 19 and the liquid outlet pipe 20 are both fixedly arranged through the cover plate 18. Because the casing 1 itself is a heat-conducting metal casing, when the motor is in use, a water tank filled with coolant can be taken and the liquid inlet pipe 19 and the liquid outlet pipe 20 can be connected to the water tank through a delivery pump, so that the coolant can circulate between the condenser 17 and the water tank, thereby cooling the casing 1, thereby driving the heat in the casing 1, accelerating the heat dissipation effect when the motor is in use, and ensuring that the motor can still maintain normal operation under high-power operation, and will not reduce the frequency due to excessive temperature.

[0027] like Figure 1As shown, an arc plate 21 is installed on the outer wall of the casing 1, and the notch of the arc plate 21 is set upward. A plurality of fins 22 arranged at intervals are installed on the outer wall of the arc plate 21. In actual use, the arc plate 21 is a heat conduction plate, which can transfer the heat on the casing 1 to the outside through the fins 22, thereby further improving the heat dissipation capacity of the motor.

[0028] like Figure 2 As shown, one end of the driving shaft 2 passes through the casing 1 and is coaxially mounted with a turntable 32, and a plurality of spaced-apart blades 33 are mounted on the side of the turntable 32 away from the casing 1, and the blades 33 are arranged along the radial direction of the turntable 32; a cover 30 is arranged at one end of the casing 1 close to the turntable 32, the cover 30 and the casing 1 are detachably mounted, and a vent 31 is opened at the end of the cover 30, and the vent 31 corresponds to the blade 33. It should be noted that a gap is left between the cover 30 and the outer wall of the casing 1. When the driving shaft 2 rotates, the blade 33 will also rotate, allowing air to flow along the casing 1 to the inside of the cover 30, thereby accelerating the flow of air between the fins 22, thereby improving the heat dissipation capacity of the fins 22.

[0029] like Figure 1 and Figure 3 The arc-shaped support plate 23 is coaxially arranged on the outer side of the arc-shaped plate 21, and at least two "U"-shaped connecting seats 24 arranged at intervals are arranged on the inner wall of the support plate 23. The connecting seats 24 correspond to the fins 22, and the connecting seats 24 and the fins 22 can be detachably installed, which is convenient for the disassembly and assembly between the connecting seat 24 and the motor; a support seat 26 is arranged at the bottom of the support plate 23, and the support seat 26 is a U-shaped seat with a wide top, and the support plate 23 is placed in the support seat 26, and a plurality of spaced connecting plates 2 are arranged between the support seat 26 and the support plate 23. 5. Both sides of the connecting plate 25 are connected to the supporting plate 23 and the supporting seat 26 respectively through the spring pieces 27 bent into an "S" shape. When the motor is installed, the fixing seats 28 are installed on both sides of the bottom of the supporting seat 26. The fixing seats 28 are provided with mounting holes. A reinforcing plate 29 is also provided on the fixing seat 28. One side of the reinforcing plate 29 is fixed on the fixing seat 28, and the other side of the reinforcing plate 29 is fixed on the supporting seat 26, so as to improve the connection strength between the fixing seat 28 and the supporting seat 26 after the motor is installed and protect the supporting strength of the supporting seat 26.

[0030] Specifically, when installing the motor, the fixing base 28 can be placed on the mounting table, and then the bolts are passed through the mounting holes to tighten the fixing base 28. When the motor is working, vibrations will be generated as the motor operates. These vibrations will be transmitted to the connecting plate 25 along the spring piece 27. With the elastic effect of the spring piece 27 itself, the vibration of the motor is converted into the kinetic potential energy of the connecting plate 25 between the support plate 23 and the support base 26. The potential energy is dissipated by air friction, thereby buffering the vibration of the motor to prevent the vibration of the motor from affecting the fixed installation of the motor and the operation of the motor.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 5300kw high voltage permanent magnet synchronous motor, characterized in that: The invention comprises a casing (1), a driving shaft (2) being coaxially arranged inside the casing (1), an end of the driving shaft (2) being rotatably connected to the casing (1), a rotor (3) being arranged inside the casing (1), the rotor (3) being coaxially mounted on the driving shaft (2), a slip ring (15) being further arranged on the driving shaft (2), and a stator being further arranged inside the casing (1), the stator being fixed on the inner wall of the casing (1); A rotating disk (32) is coaxially mounted on one end of the driving shaft (2) which passes through the housing (1), and a plurality of spaced-apart fan blades (33) are mounted on a side of the rotating disk (32) away from the housing (1), wherein the fan blades (33) are arranged along the radial direction of the rotating disk (32); An annular groove (16) is provided along the middle of the outer wall of the casing (1), and an annular cover plate (18) is detachably mounted on the outer side of the annular groove (16). A spiral condenser tube (17) is provided along the inner side of the annular groove (16), and the two ends of the condenser tube (17) are respectively connected to a liquid inlet tube (19) and a liquid outlet tube (20), and the liquid inlet tube (19) and the liquid outlet tube (20) are both passed through the cover plate (18) and fixedly arranged.

2. A 5300kw high voltage permanent magnet synchronous motor according to claim 1, characterized in that: A magnetic isolation plate (14) is provided between the drive shaft (2) and the rotor (3); the magnetic isolation plate (14) is fixed on the drive shaft (2), and the rotor (3) is fixed on the magnetic isolation plate (14).

3. A 5300kw high voltage permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of through slots (9) arranged at intervals are provided on the rotor (3), a fixed frame (11) is provided in the through slots (9), and a plurality of permanent magnets (13) are provided in the fixed frame (11).

4. A 5300kw high voltage permanent magnet synchronous motor according to claim 3, characterized in that: Limiting grooves (10) are provided at the corners of the through groove (9), and limiting blocks (12) are arranged in the limiting grooves (10), and the limiting blocks (12) are fixed to the fixed frame (11).

5. A 5300kw high voltage permanent magnet synchronous motor according to claim 1, characterized in that: The stator comprises a stator core (4), an annular plate (6) is provided on the inner side of the stator core (4), and a plurality of winding frames (5) are provided on the inner side of the annular plate (6) at intervals, the ends of the winding frames (5) are all opened, and the winding frames (5) penetrate the annular plate (6) and are fixed to the inner wall of the stator core (4), a slot (8) is provided on the inner side of the winding frame (5), the slot (8) penetrates the annular plate (6) and is connected to the port of the winding frame (5), and a coil (7) is wound on the winding frame (5).

6. A 5300kw high voltage permanent magnet synchronous motor according to claim 1, characterized in that: A shield (30) is provided at one end of the housing (1) close to the rotating disk (32); the shield (30) and the housing (1) are detachably mounted, and a vent (31) is provided at the end of the shield (30); the vent (31) corresponds to the fan blade (33).

7. A 5300kw high voltage permanent magnet synchronous motor according to claim 1, characterized in that: An arc-shaped plate (21) is mounted on the outer wall of the housing (1), the notch of the arc-shaped plate (21) being arranged upward, a plurality of spaced fins (22) are mounted on the outer wall of the arc-shaped plate (21), an arc-shaped support plate (23) is coaxially arranged on the outer side of the arc-shaped plate (21), at least two spaced "U"-shaped connection seats (24) are mounted on the inner wall of the support plate (23), the connection seats (24) correspond to the fins (22), and the connection seats (24) The fin (22) is detachably mounted thereon. A support seat (26) is disposed at the bottom of the support plate (23). The support seat (26) is a U-shaped seat with a wide opening at the top. The support plate (23) is placed in the support seat (26). A plurality of spaced connection plates (25) are disposed between the support seat (26) and the support plate (23). Both sides of the connection plate (25) are connected to the support plate (23) and the support seat (26) respectively by means of spring pieces (27) bent into an "S" shape.

8. A 5300kw high voltage permanent magnet synchronous motor according to claim 7, characterized in that: A fixing seat (28) is installed on both sides of the bottom of the support seat (26), and a mounting hole is opened on the fixing seat (28). A reinforcing plate (29) is also arranged on the fixing seat (28), and one side of the reinforcing plate (29) is fixed on the fixing seat (28), and the other side of the reinforcing plate (29) is fixed on the support seat (26).

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