Lightweight block assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor

Abstract

The invention discloses a lightweight block assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor which comprises a motor base assembly, a front end cover, a rear end cover, a stator and a rotor, wherein the motor base assembly is composed of end cover flange connecting plates, steel plate beams, reinforcing ribs, steel plate isolation cylinders, reinforcing rib blocks and bottom feet. The engine base adopts a block steel structure or a block casting structure, the stator is fixed through a locking bolt and a stator holding block, and a hot jacket process is avoided. And a sealing rubber strip is arranged between the periphery of the stator and the inner wall of the base, so that the protection grade is improved to IP54 or above. An organic silicon heavy-duty nano coating with the thickness of 20-30 microns is sprayed on a frame of the motor base, a high-temperature-resistant graphene heat dissipation coating is sprayed on the surface of the stator, and the radiance is larger than or equal to 90% The rear heat dissipation motor drives the blades to form forced air cooling. And modules such as hoisting, bottom feet, a junction box, a tricolor lamp, a temperature sensor and an oil filling pipe are integrated. The high-voltage motor has the advantages of light weight, simple process, good heat dissipation, high protection, easy maintenance, recoverability and the like, and is suitable for the field of high-voltage motors.

Description

Technical Field

[0001] This invention relates to the technical field of motor equipment, specifically to a lightweight modular assembly type high-voltage permanent magnet synchronous three-phase asynchronous motor. Background Technology

[0002] Currently, the frame structures of high-voltage permanent magnet synchronous motors and three-phase asynchronous motors, both domestically and internationally, mainly adopt integral casting or integral steel plate welding.

[0003] Integral cast iron bases are typically made of HT200-HT250 grade cast iron. Their structure consists of a thick-walled cylindrical body with dense cooling fins, and integrates components such as junction boxes, flanges, and feet into a single unit. This type of base has the following drawbacks: bulky structure, low material utilization, complex casting process requiring multiple large CNC lathe and milling machine operations, large machining allowances, numerous steps, and low efficiency, resulting in high production costs.

[0004] While integral steel plate welded machine bases avoid casting defects, most still mimic casting structures, employing thick plates rolled and welded to form a double-layer air-cooled or water-cooled structure. However, rolling thick steel plates is difficult, and the joint welding requires chamfering and multiple welds. These machine bases also suffer from problems such as heavy weight, severe welding deformation (requiring additional heat treatment and stress relief annealing), the need for precision machining of the stator mounting surface on large machine tools, and complex cooling systems. Water-cooled structures, in particular, require water channels between the two layers of cylinders, making manufacturing processes cumbersome, maintenance difficult, and the outer cylinder thickened for load-bearing capacity, further increasing weight and cost.

[0005] Furthermore, traditional frame structures generally employ a double-layer anti-corrosion coating system consisting of a zinc-rich primer and a topcoat. This coating is thick (typically >80μm), resulting in numerous construction steps, a long construction period, and a significant impact on the heat dissipation efficiency of the frame surface. Actual measurements show heat loss exceeding 10%. Simultaneously, the stator and rotor cavities have poor sealing, with protection levels generally only at IP44, making them unsuitable for harsh operating conditions such as humidity and dust.

[0006] Therefore, there is an urgent need for a new type of high-voltage motor frame structure that is lightweight, has a simplified manufacturing process, excellent heat dissipation performance, high protection level, and is easy to maintain. Summary of the Invention

[0007] The purpose of this invention is to provide a lightweight modular assembly high-voltage permanent magnet synchronous three-phase asynchronous motor to solve the above-mentioned defects caused by the prior art.

[0008] A lightweight, modularly assembled high-voltage permanent magnet synchronous, three-phase asynchronous motor includes: The base assembly includes a pair of coaxially arranged end cover flange connecting plates, which are spaced apart front to back. The rear end cover flange connecting plate has multiple vent holes evenly distributed circumferentially. Four steel plate beams are evenly distributed circumferentially between the pair of end cover flange connecting plates. Each steel plate beam has multiple vent holes spaced apart on its flange. Multiple reinforcing ribs are axially spaced between adjacent steel plate beams, and each reinforcing rib has multiple vent holes. All the front and rear ends of the steel plate beams are coaxially connected. A pair of steel plate isolation cylinders are connected. An angle guard plate is sealed to the outside of each steel plate beam. A side guard plate is sealed between two adjacent steel plate beams. An exhaust port is provided at the front of the side guard plates on both sides. A pair of anti-loosening bolts are threaded to the web of each steel plate beam. A stator clamping block is threaded to the inner end of the pair of anti-loosening bolts. Multiple stator locking bolts are evenly arranged around each anti-loosening bolt in the circumferential direction. The inner end of the stator locking bolt abuts against the outer wall surface of the stator clamping block. The front-end assembly, including the front-end cover, is coaxially mounted to the front end cover flange connecting plate by bolts; The rear-end assembly, including the rear-end cover, is coaxially mounted to the rear end cover flange connection plate by bolts; The stator is coaxially fixed between all the stator clamping blocks, and its outer circle forms a locking engagement with the stator clamping blocks; The rotor is rotatably connected to the center hole of the front end cover and the rear end cover via bearings, and a cooling fan is coaxially provided at the rear of the rotor.

[0009] Preferably, the two upper steel plate beams are connected to steel strips at both ends, and the outer ends of the steel strips are provided with lifting holes. The steel plate beams and steel strips form an upper load-bearing beam assembly (or a cast structure upper load-bearing beam).

[0010] Preferably, an annular sealing rubber strip is provided between the outer circle of the stator and the inner wall of the steel plate isolation cylinder.

[0011] Preferably, the two lower steel plate beams are fixedly connected to the bottom feet by reinforcing ribs, and the steel plate beams, reinforcing ribs and bottom feet form a lower load-bearing beam assembly (or a cast structure lower load-bearing beam).

[0012] Preferably, a perforated plate and an exhaust hood are respectively connected to the inner and outer sides of the exhaust port.

[0013] Preferably, a fixing seat one is fixedly connected to the outer wall of the upper side guard plate, and a motor junction box and a sensor junction box are respectively installed on the front and rear sides of the fixing seat one. A fixing seat two is fixedly connected to the side wall of the front end cover flange connecting plate, and a three-color light is vertically installed on the fixing seat two.

[0014] Preferably, a front end shell is coaxially fixed to the outer end face of the front end cover, and a bearing oil injection pipe and a temperature sensor are respectively provided on the upper and lower sides of the front end shell; a rear end shell is coaxially fixed to the outer end face of the rear end cover, and a bearing oil injection pipe and a temperature sensor are respectively provided on the upper and lower sides of the rear end shell.

[0015] Preferably, a dust cover is coaxially provided on the outside of the front cover, an air intake cover is coaxially provided on the outside of the rear cover, a cooling motor is coaxially fixed inside the air intake cover, the output end of the cooling motor is connected to a cooling fan, and a motor control box is fixedly connected to the outer wall of the air intake cover.

[0016] Preferably, the surfaces of the end cover flange connecting plate, steel plate beam, steel plate strip and steel plate isolation cylinder are sprayed with a heavy-duty anti-corrosion nano coating, which is an organosilicon system coating with a coating thickness of 20-30μm, a temperature resistance of up to 260℃, and a neutral salt spray test carbon steel scratch test of ≥1700 hours.

[0017] Preferably, the outer surface of the stator is coated with a high-temperature resistant graphene heat dissipation coating. The coating is a two-component material with a temperature resistance of up to 300°C and a mid-infrared emissivity of ≥90%.

[0018] Compared with the prior art, the present invention has the following advantages: 1. Significantly lightweight: The modular steel structure design eliminates the traditional thick-walled cylinder and dense heat dissipation fins. The spatial skeleton is formed by high-strength steel plate beams and reinforcing ribs, reducing the weight of the whole machine by about 1 / 3 compared to the traditional structure, achieving energy saving, emission reduction and green manufacturing.

[0019] 2. Simplified manufacturing process: All parts can be laser-cut, welded, or machined on small CNC machine tools, eliminating the need for large vertical lathes and boring and milling machines. This results in high processing efficiency and precision, significantly reducing equipment investment and processing costs.

[0020] 3. Efficient and convenient assembly: The stator is radially pressed by anti-loosening bolts and stator clamping blocks, eliminating the need for traditional hot fitting or cold pressing processes using large hydraulic presses. The assembly process is simple, fast and safe.

[0021] 4. High protection level: A high-temperature resistant insulating sealing rubber strip is installed between the outer periphery of the stator and the inner wall of the frame to effectively prevent dust and moisture from entering the air gap, raising the motor protection level to IP54 or above, making it suitable for harsh industrial environments.

[0022] 5. High-efficiency heat dissipation performance: The base forms a closed air duct, which, together with the cooling fan driven by an independent rear-mounted cooling motor, achieves forced air cooling circulation; the outer surface of the stator is sprayed with a high-temperature resistant graphene heat dissipation coating with a mid-infrared emissivity of ≥90%, which significantly enhances heat exchange efficiency.

[0023] 6. Excellent corrosion resistance: The frame surface is coated with a 20-30μm thick silicone-based heavy-duty anti-corrosion nano-coating, which has high hardness (4H), strong adhesion, salt spray resistance (carbon steel scratch resistance ≥1700 hours), acid and alkali resistance and hydrophobic self-cleaning properties. It is thinner, more efficient and more environmentally friendly than the traditional double-layer paint film anti-corrosion system. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall explosion structure of the present invention.

[0026] Figure 3 This is a first-person view structural diagram of the entire base assembly.

[0027] Figure 4 This is a structural schematic diagram of the entire base assembly from a second-view perspective.

[0028] Figure 5 This is a schematic diagram of the overall explosion of the base assembly.

[0029] Figure 6 This is a schematic diagram of a partial explosion of the base assembly.

[0030] Figure 7 This is a partial top view of the base assembly.

[0031] Figure 8 for Figure 7 A schematic diagram of the structure of section AA.

[0032] Figure 9 This is a structural schematic diagram of the upper load-bearing beam assembly from a first-person perspective.

[0033] Figure 10 This is a structural schematic diagram of the upper load-bearing beam assembly from a second perspective.

[0034] Figure 11 This is a structural schematic diagram of the lower load-bearing beam assembly from a first-view perspective.

[0035] Figure 12 This is a structural schematic diagram of the lower load-bearing beam assembly from a second perspective.

[0036] Figure 13 This is a schematic diagram of the overall exploded structure of the front-end components.

[0037] Figure 14 This is a schematic diagram of the overall explosion of the backend components.

[0038] Figure 15 An overall assembly drawing of a non-independent air-cooled electric motor.

[0039] Figure 16 An exploded view of the electric motor using a non-independent air-cooled design.

[0040] Figure 17 This is a schematic diagram of the structure of a modularly assembled base for measuring coordinate measuring machines.

[0041] in: 10-Base assembly; 101-End cover flange connecting plate; 101a-Ventilation hole one; 102-Steel plate beam; 102a-Ventilation hole two; 103-Steel plate strip; 103a-Lifting hole; 104-Reinforcing rib; 104a-Ventilation hole three; 105-Steel plate isolation cylinder; 106-Sealing rubber strip; 107-Reinforcing rib block; 108-Base foot; 109-Corner guard plate; 110-Side guard plate; 111-Anti-loosening bolt; 112-Stator clamping block; 113-Stator locking bolt; 114-Perforated plate; 115-Exhaust hood; 116-Fixed base one; 117-Motor junction box; 118-Sensor junction box; 119-Fixed base two; 120-Tricolor light; 20-Front-end assembly; 201-Front-end cover; 202-Front-end housing; 203-Bearing oil injection pipe 1; 204-Temperature sensor 1; 205-Dust cover; 30-Rear end assembly; 301-Rear end cover; 302-Rear end housing; 303-Bearing oil injection pipe II; 304-Temperature sensor II; 305-Air intake cover; 306-Cooling motor; 307-Cooling fan; 308-Motor control box; 40-Stator; 50-rotor. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0043] like Figures 1 to 17 As shown, a lightweight modular assembly type high-voltage permanent magnet synchronous three-phase asynchronous motor includes: The base assembly 10 includes a pair of coaxially arranged end cover flange connecting plates 101, which are spaced apart front to back. The rear end cover flange connecting plate 101 has multiple vent holes 101a evenly distributed circumferentially. Four steel plate beams 102 are evenly distributed circumferentially between the pair of end cover flange connecting plates 101. Each steel plate beam 102 has multiple vent holes 102a spaced apart on its flange. Multiple reinforcing ribs 104 are axially spaced between adjacent steel plate beams 102, and each reinforcing rib 104 has multiple vent holes 104a. All the front and rear ends of the steel plate beams 102 are coaxial. A pair of steel plate isolation cylinders 105 are connected. An angle guard plate 109 is sealed to the outside of each steel plate beam 102. A side guard plate 110 is sealed between two adjacent steel plate beams 102. The front of the side guard plates 110 on the left and right sides is provided with an exhaust port. A pair of anti-loosening bolts 111 are threaded to the web of each steel plate beam 102. The inner end of the anti-loosening bolts 111 is threaded to a stator clamping block 112. A plurality of stator locking bolts 113 are evenly arranged around each anti-loosening bolt 111 in the circumferential direction. The inner end of the stator locking bolt 113 abuts against the outer wall surface of the stator clamping block 112. The front end assembly 20 includes a front end cover 201, which is coaxially mounted to the front end cover flange connecting plate 101 by bolts. The rear end assembly 30, including the rear end cover 301, is coaxially mounted to the rear end cover flange connecting plate 101 by bolts; The stator 40 is coaxially fixed between all the stator clamping blocks 112, and its outer circle forms a locking engagement with the stator clamping blocks 112; The rotor 50 is rotatably connected to the center hole of the front cover 201 and the rear cover 301 via bearings, and a cooling fan 307 is coaxially provided at the rear of the rotor 50.

[0044] In this embodiment, the two ends of the upper two steel plate beams 102 are connected to steel strips 103, and the outer ends of the steel strips 103 are provided with lifting holes 103a. The upper load-bearing beam assembly is composed of the steel plate beams 102 and the steel strips 103.

[0045] In this embodiment, an annular sealing rubber strip 106 is provided between the outer circle of the stator 40 and the inner wall of the steel plate isolation cylinder 105 to isolate external dust and moisture from entering the air gap space between the stator 40 and the rotor 50, thereby improving the motor protection level to IP54 or higher.

[0046] In this embodiment, the two ends of the two lower steel plate beams 102 are fixedly connected to the base 108 by the reinforcing ribs 107. The base 108 is used to securely install the motor on the foundation platform. The lower load-bearing beam assembly is composed of the steel plate beams 102, the reinforcing ribs 107 and the base 108.

[0047] In this embodiment, a perforated plate 114 and an exhaust hood 115 are respectively connected to the inner and outer sides of the exhaust port to prevent foreign objects from entering the machine base and to guide hot air out.

[0048] In this embodiment, a fixing seat 116 is fixedly connected to the outer wall of the upper side guard plate 110. A motor junction box 117 and a sensor junction box 118 are respectively installed on the front and rear sides of the fixing seat 116 to separate the power line and the signal line and avoid electromagnetic interference. A fixing seat 2 119 is fixedly connected to the side wall of the front end cover flange connecting plate 101. A three-color light 120 is vertically installed on the fixing seat 2 119 to display the motor running, standby and fault status.

[0049] In this embodiment, a front end shell 202 is coaxially fixed to the outer end face of the front end cover 201. A bearing oil injection pipe 203 and a temperature sensor 204 are respectively provided on the upper and lower sides of the front end shell 202. Similarly, a rear end shell 302 is coaxially fixed to the outer end face of the rear end cover 301. A second bearing oil injection pipe 303 and a second temperature sensor 304 are respectively provided on the upper and lower sides of the rear end shell 302. This design can be used to achieve lubrication replenishment and real-time temperature monitoring of the front and rear bearings.

[0050] In this embodiment, a dust cover 205 is coaxially provided on the outside of the front cover 201 to prevent dust from entering the bearing cavity. An air intake cover 305 is coaxially provided on the outside of the rear cover 301. A cooling motor 306 is coaxially fixed inside the air intake cover 305. The output end of the cooling motor 306 is connected to a cooling fan 307. A motor control box 308 is fixedly connected to the outer wall of the air intake cover 305 for arranging the power lines of the cooling motor 306.

[0051] In this embodiment, the surfaces of the end cover flange connecting plate 101, steel plate beam 102, steel plate strip 103 and steel plate isolation cylinder 105 are sprayed with a heavy-duty anti-corrosion nano-coating. The coating uses an organosilicon system, with a coating thickness of 20-30μm, a temperature resistance of up to 260℃, and a neutral salt spray test result of ≥1700 hours on carbon steel fork, meaning that there is no corrosion change on the carbon steel fork sample after 1700 hours of neutral salt spray test.

[0052] In this embodiment, the outer surface of the stator 40 is coated with a high-temperature resistant graphene heat dissipation coating. The coating is a two-component material with a temperature resistance of up to 300°C and a mid-infrared emissivity of ≥90%, which is used to enhance the heat exchange efficiency between the stator 40 and the frame.

[0053] In this embodiment, during the assembly of the machine base, after the various components are initially connected in sequence using high-strength bolts (without tightening the bolts to the specified torque), the machine base is hoisted onto the flat surface of a coordinate measuring machine. The measuring arm probe measures the outer end faces of the two flange connecting plates and the inner circle stop fit gauge, etc., of the machine base. Then, manual fine-tuning is performed to ensure that the coaxiality and inner circle radial runout are within the range required by the drawings. Then, the connecting hexagonal bolts are manually tightened to the specified torque range using a torque wrench. The machine base is then moved to the working range of a nearby radial drilling machine, where the connection between the flange connecting plate and the four longitudinal beams is drilled, the locating pin holes are reamed, and the locating pins are installed. This ensures the dimensional and geometric tolerance accuracy of the machine base. Then, the machine base is moved to the stator assembly station for stator coil installation. The stator coil is placed into the machine base and, after reaching the required axial dimensions, the stator clamping blocks are manually adjusted to align the center of the stator inner diameter with the motor shaft. While adjusting, a coordinate measuring machine is used to measure until the coaxiality of the stator coil center with the centers of the two flange connecting plates meets the drawing requirements, and the radial runout of the stator coil inner circle meets the dimensional tolerance requirements. Finally, the four diagonal stator clamping blocks are tightened with a torque wrench to ensure a uniform air gap between the motor stator and rotor.

[0054] Working principle of a lightweight, modularly assembled high-voltage permanent magnet synchronous and three-phase asynchronous motor: When the motor is running, the cooling motor 306 starts, driving the cooling fan 307 to rotate, creating a negative pressure. External cooling air enters the machine base cavity through the vent 101a on the rear end cover flange connecting plate 101. The airflow flows sequentially through the vent 3 104a and the vent 2 102a, undergoing forced convection heat transfer within the annular space formed by the outer surface of the stator 40 and the inner wall of the machine base. The heat is efficiently radiated by the graphene coating on the surface of the stator 40 and carried away by the airflow. The hot air is discharged through the exhaust port 110a at the front of the side guard plate 110, completing the heat dissipation cycle.

[0055] In addition, the sealing rubber strip 106 effectively prevents external dust and moisture from entering the air gap between the stator and rotor, ensuring stable operation of the motor under high protection levels. The tri-color indicator 120, temperature sensor 204, and temperature sensor 304 enable visual and intelligent monitoring of the operating status. Regularly replenishing the bearings with grease via bearing lubrication pipes 203 and 303 extends their service life.

[0056] Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A lightweight, modularly assembled high-voltage permanent magnet synchronous, three-phase asynchronous motor, characterized in that, include: The base assembly (10) includes a pair of coaxially arranged end cover flange connecting plates (101), which are spaced apart front to back. Multiple vent holes (101a) are evenly distributed circumferentially on the rear end cover flange connecting plate (101). Four load-bearing steel plate beams (102) are evenly distributed circumferentially between the pair of end cover flange connecting plates (101). Multiple vent holes (2) (102a) are spaced apart on the flange of each steel plate beam (102). Multiple reinforcing ribs (104) are axially spaced between adjacent steel plate beams (102), and multiple vent holes (3) (104a) are distributed on the reinforcing ribs (104). All steel plate beams (102) are connected at both ends. A pair of steel plate isolation cylinders (105) are connected to the shaft. An angle guard plate (109) is sealed to the outside of each steel plate beam (102). A side guard plate (110) is sealed between two adjacent steel plate beams (102). The front of the side guard plates (110) on the left and right sides is provided with an exhaust port. A pair of anti-loosening bolts (111) are threaded to the web of each steel plate beam (102). The inner end of the pair of anti-loosening bolts (111) is threaded to a stator clamping block (112). A plurality of stator locking bolts (113) are evenly arranged around each anti-loosening bolt (111) in the circumferential direction. The inner end of the stator locking bolt (113) abuts against the outer wall surface of the stator clamping block (112). The front end assembly (20), including the front end cover (201), is coaxially mounted to the front end cover flange connecting plate (101) by bolts; The rear end assembly (30) includes a rear end cover (301), which is coaxially mounted to the rear end cover flange connecting plate (101) by bolts; The stator (40) is coaxially fixed between all the stator clamping blocks (112), and its outer circle forms a locking engagement with the stator clamping blocks (112); The rotor (50) is rotatably connected to the center hole of the front cover (201) and the rear cover (301) via bearings, and a cooling fan (307) is coaxially provided at the rear of the rotor (50).

2. The lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The two upper steel plate beams (102) are connected to steel strips (103) at both ends. The outer ends of the steel strips (103) are provided with lifting holes (103a). The upper load-bearing beam assembly is composed of the steel plate beams (102) and the steel strips (103).

3. The lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, An annular sealing rubber strip (106) is provided between the outer circle of the stator (40) and the inner wall of the steel plate isolation cylinder (105).

4. The lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The two lower steel plate beams (102) are fixedly connected to the bottom feet (108) by the reinforcing ribs (107) at both ends, and the steel plate beams (102), the reinforcing ribs (107) and the bottom feet (108) form the lower load-bearing beam assembly.

5. A lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The inner and outer sides of the exhaust port are respectively connected to a perforated plate (114) and an exhaust hood (115).

6. A lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, A first fixing seat (116) is fixedly connected to the outer wall of the upper side guard plate (110). A motor junction box (117) and a sensor junction box (118) are respectively installed on the front and rear sides of the first fixing seat (116). A second fixing seat (119) is fixedly connected to the side wall of the front end cover flange connecting plate (101). A three-color lamp (120) is vertically installed on the second fixing seat (119).

7. A lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The front end cover (201) is coaxially fixed with a front end shell (202), and the upper and lower sides of the front end shell (202) are respectively provided with a bearing oil injection pipe (203) and a temperature sensor (204); the rear end cover (301) is coaxially fixed with a rear end shell (302), and the upper and lower sides of the rear end shell (302) are respectively provided with a bearing oil injection pipe (303) and a temperature sensor (304).

8. A lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The front cover (201) is coaxially provided with a dust cover (205) on the outside, and the rear cover (301) is coaxially provided with an air intake cover (305) on the outside. A cooling motor (306) is coaxially fixed inside the air intake cover (305). The output end of the cooling motor (306) is connected to a cooling fan (307). A motor control box (308) is fixedly connected to the outer wall of the air intake cover (305).

9. A lightweight modular assembly type high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The surfaces of the end cover flange connecting plate (101), steel plate beam (102), steel plate strip (103) and steel plate isolation cylinder (105) are sprayed with a heavy-duty anti-corrosion nano coating. The coating uses an organosilicon system, with a coating thickness of 20-30μm, a temperature resistance of up to 260℃, and a neutral salt spray test carbon steel scratch test of ≥1700 hours.

10. A lightweight, modularly assembled high-voltage permanent magnet synchronous and three-phase asynchronous motor according to claim 1, characterized in that, The outer surface of the stator (40) is coated with a high-temperature resistant graphene heat dissipation coating. The coating is a two-component material with a temperature resistance of up to 300℃ and a mid-infrared emissivity of ≥90%.

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