Magnetic suspension motor high and low temperature testing device with temperature cycle adjusting function

Abstract

The invention discloses a magnetic suspension motor high and low temperature testing device with a temperature cycle adjusting function, and relates to the technical field of testing devices.The magnetic suspension motor high and low temperature testing device with the temperature cycle adjusting function comprises a shell assembly, a fixing assembly, a detection assembly and an adjusting assembly; a fixing assembly is arranged in the shell assembly, a detection assembly is arranged on one side of the fixing assembly, a first temperature control assembly is arranged at the top end of the fixing assembly and used for controlling the temperature outside the magnetic suspension motor shell, and a second temperature control assembly is arranged at the bottom end of the fixing assembly and used for controlling the temperature of parts inside the magnetic suspension motor shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing devices, and particularly relates to a high-low temperature testing device for a magnetic suspension motor with temperature cycle regulation function. BACKGROUND

[0002] In the production process of a magnetic suspension motor, a testing procedure is a key link for guaranteeing the qualified performance of the magnetic suspension motor, and a plurality of core data of the motor under the influence of temperature need to be detected, including suspension gap fluctuation caused by temperature change, gap change between components and a shell under an extreme temperature environment, and heat dissipation effect of the motor as a whole, which are directly related to the stability and reliability of the magnetic suspension motor in subsequent use. However, the existing conventional magnetic suspension motor testing device has significant defects and cannot meet the precise testing requirement: on the one hand, the testing range is limited, and only single working condition of high temperature or low temperature can be detected, and the high-low temperature cycle or multiple temperature scenes cannot be covered, and the complex temperature environment that the motor may actually face cannot be simulated comprehensively; on the other hand, the testing scene deviates greatly from the actual work, and the conventional device controls the overall temperature of a sealed testing space to realize temperature control, which makes the shell of the magnetic suspension motor first contact the temperature change and be affected, and then the temperature is conducted to internal components of the motor, while in actual work, the internal components often first generate heat (such as component operation heat generation) and then conduct heat to the shell, the temperature control logic of the conventional device does not conform to the actual working state of the motor, and finally the testing result cannot accurately reflect the actual performance of the motor, and cannot support subsequent performance optimization and quality control. SUMMARY

[0003] The present application aims to provide a high-low temperature testing device for a magnetic suspension motor with temperature cycle regulation function to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A high-low temperature testing device for a magnetic suspension motor with temperature cycle regulation function, the testing device comprising a shell assembly, a fixing assembly, a detection assembly and a regulation assembly, the fixing assembly is arranged in the shell assembly, the detection assembly is arranged on one side of the fixing assembly, the first temperature control assembly is arranged at the top end of the fixing assembly, the first temperature control assembly is used for controlling the temperature outside the shell of the magnetic suspension motor, the second temperature control assembly is arranged at the bottom end of the fixing assembly, and the second temperature control assembly is used for controlling the temperature of the internal components of the shell of the magnetic suspension motor.

[0005] Furthermore, the production process of a magnetic levitation motor requires multiple steps, including a testing process. This testing primarily detects various data about the magnetic levitation motor, including changes in the levitation gap under temperature influence, changes in the gap between components and the housing under extreme temperatures, and the overall heat dissipation effect. However, traditional magnetic levitation motor testing devices can only perform testing under single high or low temperature conditions, resulting in a limited testing range. Moreover, temperature testing is conducted by controlling the temperature in a sealed testing space, which means that the magnetic levitation motor housing is affected by the temperature first, and then the temperature is conducted to the internal components. This does not match the actual working conditions of the motor, leading to inaccurate test results. The housing assembly serves as the mounting base, the fixing assembly is used to fix the magnetic levitation motor, the testing assembly is used to perform data testing on the magnetic levitation motor, the first temperature control assembly is used to control the ambient temperature within the sealed testing space, and the second temperature control assembly is used to control the internal temperature of the magnetic levitation motor.

[0006] The housing assembly includes a base, a work surface, a baffle, and a top cover. The base is located on a horizontal ground. A baffle is provided at the top of the base, and the bottom of the baffle is fixedly connected to the base. The work surface is located inside the baffle and is fixedly connected to the base. A fixing component is provided on the surface of the work surface. A top cover is provided at the top of the baffle, and the bottom of the top cover is fixedly connected to the baffle. A door is provided on one side of the baffle.

[0007] Furthermore, the base stands on a horizontal ground, and a baffle is provided at the top of the base. The bottom of the baffle is fixedly connected to the top of the base. The door is connected to the baffle, and a top cover is provided at the top of the baffle. The top cover is fixedly connected to the baffle. Thus, the base, baffle, door, and top cover form a sealed test space, which is used as the test environment for the magnetic levitation motor.

[0008] The fixed assembly includes a support plate and a limiting block. The support plate is located on the surface of the workbench and its bottom end is fixedly connected to the workbench. A placement groove is provided on the support plate, and a limiting block is provided on the surface of the support plate. The limiting block is slidably connected to the support plate. A drive motor is provided on one side of the limiting block. The fixed end of the drive motor is fixedly connected to the support plate, and the output end of the drive motor is fixedly connected to the limiting block.

[0009] Furthermore, the support plate is located on the workbench and is fixedly connected to the workbench. The support plate is used to place the magnetic levitation motor. When the magnetic levitation motor is placed in the placement slot of the support plate, the bottom end of the limiting block is fixedly connected to the surface of the support plate. The limiting block is equipped with a detection component to detect the rotation speed of the magnetic levitation motor. The drive motor is used as a power source to control the movement of the limiting block so that the limiting block can move to the magnetic levitation motor.

[0010] The surface of the bearing plate is provided with a clamping component. One end of the clamping component is slidably connected to the bottom end of the placement groove. A strain gauge is provided on one side of the clamping component. A connecting column is provided between the strain gauge and the clamping component. One end of the connecting column is slidably connected to the clamping component, and the other end of the connecting column is rotatably connected to the strain gauge. A bottom block is provided at the bottom end of the placement groove. The bottom block is slidably connected to the bearing plate. A hydraulic rod is provided at the bottom end of the bottom block. The telescopic end of the hydraulic rod is fixedly connected to the bottom block, and the fixed end of the hydraulic rod is fixedly connected to the bottom end of the placement groove. Connecting rods are provided on both sides of the hydraulic rod. One end of the connecting rod is rotatably connected to the hydraulic rod, and the other end of the connecting rod is rotatably connected to the bottom end of the clamping component.

[0011] Furthermore, during the testing process, to ensure the mechanical positioning accuracy of the motor and avoid data distortion, the magnetic levitation motor needs to be fixed. Four clamping components are provided, located at the four corners of the placement slot. Strain gauges are placed on the side of the clamping components closest to the magnetic levitation motor, and these strain gauges are connected to the clamping components via connecting pillars. Because the strain gauges themselves can deform within a certain range, when the clamping components control the strain gauges to fit against the outer shell of the magnetic levitation motor, they can wrap around the outer shell. This ensures that when the outer shell temperature changes, the temperature will first affect the strain gauges, causing a change in resistance. The higher the outer shell temperature, the greater the resistance of the strain gauge; conversely, the lower the outer shell temperature, the lower the resistance of the strain gauge. This allows for the detection of changes in the outer shell. The bottom block is used to control the retraction of the hydraulic rod when under pressure. The retraction of the hydraulic rod drives the connecting rod to move, which in turn drives the clamping components to move, and the clamping components drive the strain gauges to move.

[0012] The first temperature control component includes a first infusion pipeline and a centrifugal pump. The first infusion pipeline is located inside the base, and the pipeline body extends to the surface of the workbench. Both ends of the first infusion pipeline extend to the outside of the base, and a centrifugal pump is provided at the input end of the first infusion pipeline.

[0013] Furthermore, the first temperature control component is used to control the temperature outside the magnetic levitation motor housing. The body of the first liquid delivery pipe extends to the surface of the workbench. When the liquid is delivered through the first liquid delivery pipe, the temperature of the liquid will affect the sealed test space through the first liquid delivery pipe on the surface of the workbench, thereby controlling the temperature of the sealed test space. One end of the first liquid delivery pipe is connected to an external pipe. If a high-temperature environment is required in the sealed test space, hot oil or steam flows in the first liquid delivery pipe. If a low-temperature environment is required in the sealed test space, liquid nitrogen flows in the first liquid delivery pipe. A centrifugal pump is used to control the liquid flow rate, thereby controlling the rate of temperature change.

[0014] The second temperature control component includes a second infusion pipe and a solenoid valve. The second infusion pipe is located inside the base and is located on one side of the first infusion pipe. One end of the second infusion pipe extends to the surface of the support plate, and the other end of the second infusion pipe extends to the outside of the base. The input end of the second infusion pipe is equipped with a solenoid valve.

[0015] Furthermore, the second temperature control component is used to control the temperature inside the magnetic levitation motor housing. The magnetic levitation motor structure includes cooling pipes through which cooling liquid flows to cool the components inside the motor. One end of the second liquid inlet extends to the surface of the support plate and connects to the input end of the magnetic levitation motor's cooling pipe. The other end of the second liquid inlet is located on one side of the base and connects to external pipes. A solenoid valve controls the liquid flow rate. During testing, to check the heat dissipation effect of the magnetic levitation motor, high-temperature liquid can be flowed through the second liquid inlet, thus initially placing the inside of the magnetic levitation motor at a high temperature. The liquid is transferred to the shell at a certain temperature, which can better simulate the heat dissipation of the magnetic levitation motor under high temperature. At this time, the flow of the medium in the first liquid infusion pipe can be controlled to detect the data of the magnetic levitation motor in extreme environments. To detect the heat insulation efficiency of the magnetic levitation motor or the heat change of the shell, the solenoid valve is closed, the second liquid infusion pipe is not filled with liquid, and the first liquid infusion pipe is filled with high temperature liquid. To detect the cooling efficiency, the second liquid infusion pipe is filled with low temperature liquid and the first liquid infusion pipe is filled with high temperature liquid. It should be added that there are two second liquid infusion pipes, which are connected to the input end of the cooling pipe and the output end of the cooling pipe, respectively.

[0016] The detection component includes a connecting block and a semiconductor. The limiting block has a groove, the semiconductor is located in the groove, and the connecting block is located outside the groove. The connecting block is used to connect with the drive shaft of the magnetic levitation motor. The connecting block and the semiconductor are rotatably connected. A magnetic block is provided on the side of the connecting block close to the groove, and the magnetic block is fixedly connected to the connecting block.

[0017] Furthermore, the connecting block is located outside the groove of the limiting block, and the side of the connecting block away from the groove is used to connect with the drive shaft of the magnetic levitation motor. When the magnetic levitation motor rotates, it will drive the connecting block to rotate together. The rotation of the connecting block will drive the magnetic block to rotate, resulting in a change in semiconductor voltage. The faster the magnetic block rotates, the higher the semiconductor voltage, and vice versa. The working status of the magnetic levitation motor can be judged based on the voltage change.

[0018] The second infusion pipeline is attached to the support plate of the platform with a protective shell at one end. The protective shell has a hollow cavity inside and a thermocouple is located inside the hollow cavity.

[0019] Furthermore, the protective housing has two parts, one connected to the second liquid inlet pipe at the input end of the cooling pipe and the other connected to the second liquid inlet pipe at the output end of the cooling pipe. Thermocouples are used to detect the liquid temperature in the second liquid inlet pipe. Without damaging the magnetic levitation motor, the internal temperature change of the magnetic levitation motor can be indirectly obtained by comparing the temperature difference between the two points. If the liquid temperature in the second liquid inlet pipe is too high, the thermocouple voltage changes. However, when the liquid temperature increases, the thermocouple voltage increases, and vice versa.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a dual-temperature control architecture consisting of a first temperature control component and a second temperature control component to flexibly achieve multi-dimensional temperature regulation: The first temperature control component, by delivering hot oil, steam, or liquid nitrogen and controlling the medium flow rate with a centrifugal pump, can precisely regulate the temperature and temperature rise / fall rate of the sealed test space outside the motor housing, meeting the requirements of high and low temperature cycling; the second temperature control component, by connecting to the motor's own cooling pipes and cooperating with a solenoid valve to control the delivery of high or low temperature media, can independently regulate the internal temperature of the motor. Together, the two components can simulate various actual operating conditions such as internal heating, external heat dissipation, external high temperature with internal cooling, and single external temperature control, comprehensively covering the complex temperature environment that magnetic levitation motors may face, significantly expanding the testing range. 2. In this invention, after the motor is placed in the placement slot, the hydraulic rod retracts due to pressure on the bottom block, causing the connecting rod and clamping components to move synchronously. The four clamping components secure the motor from the four corners in a ring-like manner. Combined with the deformable characteristics of the strain gauges, this ensures the mechanical positioning accuracy of the motor, avoids data errors caused by displacement during testing, and can adapt to the fixing requirements of motors of different sizes. On the other hand, the strain gauges, which are in contact with the motor shell, can simultaneously detect the shell temperature. Temperature changes directly cause fluctuations in the resistance value of the strain gauges, eliminating the need for additional temperature sensors. This achieves integrated fixing and temperature detection, improving data acquisition efficiency. 3. This invention drives the connecting block and magnetic block to rotate via the motor drive shaft, and calculates the rotational speed using the induced voltage generated by the semiconductor in a changing magnetic field, eliminating the need for direct contact with the core components of the motor. The internal temperature of the motor is detected indirectly by comparing the temperature difference between the input and output media using a thermocouple on the second infusion pipeline. This allows for monitoring of internal temperature changes without disassembling the motor, avoiding damage and reducing the cost and time of post-test repair. Furthermore, it enables simultaneous acquisition of multiple parameters, including rotational speed, casing temperature, and internal temperature, further improving testing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the worktable of the present invention; Figure 3 This is a schematic diagram of the drive motor of the present invention; Figure 4 This is a schematic diagram of the structure of the solenoid valve of the present invention; Figure 5 This is a schematic diagram of the structure of the support plate of the present invention; Figure 6 This is a schematic diagram of the structure of the limiting block of the present invention; Figure 7 For the present invention Figure 5 Enlarged view of part A in the middle section; Figure 8 This is a schematic diagram of the structure of the base block of the present invention; Figure 9 This is a schematic diagram of the protective casing of the present invention.

[0022] In the diagram: 1. Housing assembly; 11. Base; 12. Workbench; 13. Baffle; 14. Top cover; 2. Fixing assembly; 21. Bearing plate; 211. Placement slot; 22. Limiting block; 221. Groove; 23. Drive motor; 24. Clamping component; 25. Strain gauge; 26. Connecting column; 27. Base block; 28. Hydraulic rod; 29. ​​Connecting rod; 3. First temperature control assembly; 31. First infusion pipeline; 32. Centrifugal pump; 4. Second temperature control assembly; 41. Second infusion pipeline; 42. Solenoid valve; 5. Detection assembly; 51. Connecting block; 52. Semiconductor; 53. Magnetic block; 54. Protective housing; 55. Thermocouple. Detailed Implementation

[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example: Figures 1-9 As shown, the present invention provides a technical solution for a high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function. The testing device includes a housing assembly 1, a fixing assembly 2, a detection assembly 5, and an adjustment assembly. The fixing assembly 2 is provided inside the housing assembly 1. The detection assembly 5 is provided on one side of the fixing assembly 2. A first temperature control assembly 3 is provided at the top of the fixing assembly 2. The first temperature control assembly 3 is used to control the temperature outside the magnetic levitation motor housing. A second temperature control assembly 4 is provided at the bottom of the fixing assembly 2. The second temperature control assembly 4 is used to control the temperature of the internal components of the magnetic levitation motor housing.

[0025] Specifically, the production process of a magnetic levitation motor requires multiple steps, including a testing process. This testing process is mainly used to detect various data of the magnetic levitation motor, including changes in the levitation gap under temperature influence, changes in the gap between components and the housing under extreme temperatures, and the overall heat dissipation effect. However, traditional magnetic levitation motor testing devices can only perform single-condition testing at high or low temperatures, resulting in a limited testing range. Furthermore, temperature testing is conducted by controlling the temperature within a sealed testing space, which means that the housing of the magnetic levitation motor is affected by the temperature first, and then the temperature is conducted to the internal parts. This is not the same as the actual working conditions of the motor, leading to inaccurate test results. The housing component 1 serves as the mounting base, the fixing component 2 is used to fix the magnetic levitation motor, the testing component 5 is used to test the data of the magnetic levitation motor, the first temperature control component 3 is used to control the ambient temperature within the sealed testing space, and the second temperature control component 4 is used to control the internal temperature of the magnetic levitation motor.

[0026] like Figures 1-4 As shown, the housing assembly 1 includes a base 11, a worktable 12, a baffle 13, and a top cover 14. The base 11 is located on a horizontal ground. The top of the base 11 is provided with a baffle 13, and the bottom of the baffle 13 is fixedly connected to the base 11. The worktable 12 is located inside the baffle 13 and is fixedly connected to the base 11. A fixing component 2 is provided on the surface of the worktable 12. The top of the baffle 13 is provided with a top cover 14, and the bottom of the top cover 14 is fixedly connected to the baffle 13. A door is provided on one side of the baffle 13.

[0027] Specifically, the base 11 stands on a horizontal ground, and a baffle 13 is provided at the top of the base 11. The bottom of the baffle 13 is fixedly connected to the top of the base 11. The baffle 13 is composed of three vertical plates that are fastened together. The door is connected to the baffle 13, and a top cover 14 is provided at the top of the baffle 13. The top cover 14 is fixedly connected to the baffle 13. Thus, the base 11, the baffle 13, the door and the top cover 14 form a sealed test space, which is used as the test environment for the magnetic levitation motor.

[0028] like Figure 2 , Figure 5 As shown, the fixing component 2 includes a support plate 21 and a limiting block 22. The support plate 21 is located on the surface of the workbench 12. The bottom end of the support plate 21 is fixedly connected to the workbench 12. A placement groove 211 is provided on the support plate 21. The limiting block 22 is provided on the surface of the support plate 21. The limiting block 22 is slidably connected to the support plate 21. A drive motor 23 is provided on one side of the limiting block 22. The fixed end of the drive motor 23 is fixedly connected to the support plate 21, and the output end of the drive motor 23 is fixedly connected to the limiting block 22.

[0029] Specifically, the support plate 21 is located on the worktable 12 and is fixedly connected to the worktable 12. The support plate 21 is used to place the magnetic levitation motor. When the magnetic levitation motor is placed in the placement slot 211 of the support plate 21, the bottom end of the limiting block 22 is fixedly connected to the surface of the support plate 21. The limiting block 22 is provided with a detection component 5 for detecting the rotation speed of the magnetic levitation motor. The drive motor 23 is used as a power source to control the movement of the limiting block 22 so that the limiting block 22 can move to the magnetic levitation motor.

[0030] like Figure 5 , Figure 7 , Figure 8 As shown, the surface of the bearing plate 21 is provided with a clamping member 24. One end of the clamping member 24 is slidably connected to the bottom end of the placement groove 211. A strain gauge 25 is provided on one side of the clamping member 24. A connecting post 26 is provided between the strain gauge 25 and the clamping member 24. One end of the connecting post 26 is slidably connected to the clamping member 24, and the other end of the connecting post 26 is rotatably connected to the strain gauge 25. A bottom block 27 is provided at the bottom end of the placement groove 211. The bottom block 27 is slidably connected to the bearing plate 21. A hydraulic rod 28 is provided at the bottom end of the bottom block 27. The telescopic end of the hydraulic rod 28 is fixedly connected to the bottom block 27, and the fixed end of the hydraulic rod 28 is fixedly connected to the bottom end of the placement groove 211. Connecting rods 29 are provided on both sides of the hydraulic rod 28. One end of the connecting rod 29 is rotatably connected to the hydraulic rod 28, and the other end of the connecting rod 29 is rotatably connected to the bottom end of the clamping member 24.

[0031] Specifically, during the testing process, in order to ensure the mechanical positioning accuracy of the motor and avoid data distortion, the magnetic levitation motor needs to be fixed. Four clamping members 24 are provided, located at the four corners of the placement slot 211. Strain gauges 25 are provided on the side of the clamping member 24 closest to the magnetic levitation motor. The strain gauges 25 are connected to the clamping member 24 via connecting posts 26. Because the strain gauges 25 can deform within a certain range, when the clamping member 24 controls the strain gauges 25 to fit against the outer shell of the magnetic levitation motor, it can provide support for the outer shell. The casing is wrapped so that when the shell temperature changes, the temperature will first affect the strain gauge 25. The strain gauge 25 will change its resistance value due to the temperature. The higher the shell temperature, the greater the resistance value of the strain gauge 25, and vice versa. This realizes the detection of shell changes. The bottom block 27 is used to control the retraction of the hydraulic rod 28 when pressure is applied. The retraction of the hydraulic rod 28 drives the connecting rod 29 to move, the connecting rod 29 drives the clamping member 24 to move, and the clamping member 24 drives the strain gauge 25 to move.

[0032] like Figures 2-4 As shown, the first temperature control component 3 includes a first infusion pipe 31 and a centrifugal pump 32. The first infusion pipe 31 is located inside the base 11. The pipe body of the first infusion pipe 31 extends to the surface of the workbench 12. Both ends of the first infusion pipe 31 extend to the outside of the base 11. The centrifugal pump 32 is provided at the input end of the first infusion pipe 31.

[0033] Specifically, the first temperature control component 3 is used to control the temperature outside the magnetic levitation motor housing. The body of the first liquid delivery pipe 31 extends to the surface of the workbench 12. When the first liquid delivery pipe 31 delivers liquid, the temperature of the liquid will affect the sealed test space through the first liquid delivery pipe 31 on the surface of the workbench 12, thereby controlling the temperature of the sealed test space. One end of the first liquid delivery pipe 31 is connected to an external pipe. If a high-temperature environment is required in the sealed test space, hot oil or steam flows in the first liquid delivery pipe 31. If a low-temperature environment is required in the sealed test space, liquid nitrogen flows in the first liquid delivery pipe 31. The centrifugal pump 32 is used to control the liquid flow rate, thereby controlling the rate of temperature change.

[0034] like Figure 2 , Figure 4 , Figure 5 As shown, the second temperature control component 4 includes a second infusion pipe 41 and a solenoid valve 42. The second infusion pipe 41 is located inside the base 11 and is located on one side of the first infusion pipe 31. One end of the second infusion pipe 41 extends to the surface of the support plate 21, and the other end of the second infusion pipe 41 extends to the outside of the base 11. The input end of the second infusion pipe 41 is provided with a solenoid valve 42.

[0035] Specifically, the second temperature control component 4 is used to control the temperature inside the magnetic levitation motor housing. The magnetic levitation motor structure includes cooling pipes for flowing cooling liquid to cool the components inside the motor. One end of the second liquid inlet pipe 41 extends to the surface of the support plate 21 and connects to the input end of the magnetic levitation motor cooling pipe. The other end of the second liquid inlet pipe 41 is located on one side of the base 11 and connects to an external pipe. Then, the solenoid valve 42 controls the liquid flow rate. During testing, to check the heat dissipation effect of the magnetic levitation motor, high-temperature liquid can flow through the second liquid inlet pipe 41, thus initially placing the inside of the magnetic levitation motor at a high temperature. The state is then transmitted to the shell, which can better simulate the heat dissipation of the magnetic levitation motor under high temperature. At this time, the flow of the medium in the first liquid inlet pipe 31 can also be controlled to detect the data of the magnetic levitation motor in extreme environments. If the heat insulation efficiency of the magnetic levitation motor or the heat change of the shell is to be detected, the solenoid valve 42 is closed, the second liquid inlet pipe 41 is not filled with liquid, and the first liquid inlet pipe 31 is filled with high temperature liquid. If the cooling efficiency is to be detected, the second liquid inlet pipe 41 can be filled with low temperature liquid and the first liquid inlet pipe 31 can be filled with high temperature liquid. It is also necessary to supplement that there are two second liquid inlet pipes 41, which are connected to the input end of the cooling pipe and the output end of the cooling pipe, respectively.

[0036] Figure 6 , Figure 9The detection component 5 includes a connecting block 51 and a semiconductor 52. The limiting block 22 has a groove 221. The semiconductor 52 is located in the groove 221. The connecting block 51 is located outside the groove 221. The connecting block 51 is used to connect with the drive shaft of the magnetic levitation motor. The connecting block 51 and the semiconductor 52 are rotatably connected. A magnetic block 53 is provided on the side of the connecting block 51 close to the groove 221. The magnetic block 53 is fixedly connected to the connecting block 51.

[0037] Specifically, the connecting block 51 is located in the groove 221 of the limiting block 22. The side of the connecting block 51 away from the groove 221 is used to connect with the drive shaft of the magnetic levitation motor. When the magnetic levitation motor rotates, it will drive the connecting block 51 to rotate together. The rotation of the connecting block 51 will drive the magnetic block 53 to rotate, causing the voltage of the semiconductor 52 to change. The faster the magnetic block 53 rotates, the higher the voltage of the semiconductor 52. Conversely, the slower the magnetic block 53 rotates, the lower the voltage of the semiconductor 52. The working status of the magnetic levitation motor can be judged based on the voltage change.

[0038] The second infusion pipeline 41 is provided with a protective shell 54 at one end of the support plate 21 close to the platform. The protective shell 54 has a hollow cavity inside and a thermocouple 55 is provided inside the protective shell 54. The thermocouple 55 is located in the hollow cavity.

[0039] Specifically, the protective housing 54 has two parts, one connected to the second liquid inlet pipe 41 at the input end of the cooling pipe and the other connected to the second liquid inlet pipe 41 at the output end of the cooling pipe. Thermocouple 55 is used to detect the liquid temperature in the second liquid inlet pipe 41. Without damaging the magnetic levitation motor, the internal temperature change of the magnetic levitation motor can be indirectly obtained by comparing the temperature difference between the two parts. If the liquid temperature in the second liquid inlet pipe 41 is too high, the voltage of thermocouple 55 changes. However, when the liquid temperature increases, the voltage of thermocouple 55 increases, and vice versa.

[0040] Working principle: Before testing, open the door on one side of the baffle 13 in the housing assembly 1, and place the magnetic levitation motor on the support plate 21. After the motor is placed in, it will press the bottom block 27 at the bottom of the placement slot 211, causing the bottom block 27 to drive the hydraulic rod 28 at its bottom to retract. The connecting rods 29 on both sides of the hydraulic rod 28 rotate synchronously with the retraction action, thereby pulling the clamping pieces 24 located at the four corners of the placement slot 211 to slide along the placement slot 211. The strain gauge 25 connected to one side of the clamping piece 24 through the connecting column 26 will fit against the motor housing. Because the strain gauge 25 can deform within a certain range, it can tightly wrap the motor housing, which not only ensures the mechanical positioning accuracy of the motor, but also lays the foundation for subsequent housing temperature detection. Then, start the drive motor 23 on the support plate 21. 3. The limiting block 22 slides along the surface of the bearing plate 21 until the connecting block 51 on the outer side of the groove 221 of the limiting block 22 precisely aligns with the drive shaft of the magnetic levitation motor, completing the power transmission connection between the detection component 5 and the motor. Then, when testing the motor, if the heat dissipation effect of the motor is to be tested, a high-temperature medium is supplied to the second liquid infusion pipe 41, so that the inside of the motor heats up first and then conducts the heat to the shell, simulating the "internal heat dissipation to the outside" scenario in actual work; when testing the heat insulation efficiency, the solenoid valve 42 is closed, and only the high-temperature medium is supplied to the sealed test space through the first temperature control component 3, and the temperature change of the shell is observed; when testing the cooling efficiency, a low-temperature medium is supplied to the second liquid infusion pipe 41, and at the same time, the outside of the shell is kept in a high-temperature environment through the first temperature control component 3, simulating extreme working conditions. This allows for precise temperature regulation within the casing. Furthermore, by controlling the flow of the medium within the first liquid inlet pipe 31, data from the magnetic levitation motor can be monitored under extreme conditions. To monitor the thermal insulation efficiency of the magnetic levitation motor or changes in casing temperature, the solenoid valve 42 is closed, the second liquid inlet pipe 41 is blocked, and the first liquid inlet pipe 31 is supplied with a high-temperature liquid. To monitor cooling efficiency, the second liquid inlet pipe 41 is supplied with a low-temperature liquid, and the first liquid inlet pipe 31 is supplied with a high-temperature liquid. It is also necessary to note that there are two second liquid inlet pipes 41, one connected to the input end of the cooling pipe and the other to the output end. During this process, the strain gauge 25, which is in contact with the motor casing, will experience changes in resistance due to temperature variations; resistance increases when the temperature rises and decreases when the temperature falls. The motor housing temperature and its trend can be obtained in real time by monitoring the resistance change. When the motor is running, the drive shaft drives the docking connecting block 51 to rotate synchronously. The magnetic block 53 fixed on the side of the connecting block 51 close to the groove 221 generates a changing magnetic field as it rotates. The semiconductor 52 generates an induced voltage in the changing magnetic field, and the voltage value is positively correlated with the rotation speed of the magnetic block 53. The real-time speed of the motor can be calculated by the voltage change. The second infusion pipe 41 is fitted with a protective shell 54 on the outer side of the end close to the support plate 21. The shell is hollow and contains a thermocouple 55. The thermocouples 55 on the two pipes detect the temperature of the medium at the input and output ends, respectively. By comparing the temperature difference between the two points, the internal temperature change of the motor can be indirectly obtained without disassembling the motor, thus avoiding damage to the motor structure.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function, characterized in that: The testing device includes a housing assembly (1), a fixing assembly (2), a detection assembly (5), and an adjustment assembly. The fixing assembly (2) is provided inside the housing assembly (1). The detection assembly (5) is provided on one side of the fixing assembly (2). A first temperature control assembly (3) is provided at the top of the fixing assembly (2). The first temperature control assembly (3) is used to control the temperature outside the magnetic levitation motor housing. A second temperature control assembly (4) is provided at the bottom of the fixing assembly (2). The second temperature control assembly (4) is used to control the temperature of the internal components of the magnetic levitation motor housing.

2. The high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 1, characterized in that: The housing assembly (1) includes a base (11), a work surface (12), a baffle (13), and a top cover (14). The base (11) is located on a horizontal ground. The top of the base (11) is provided with a baffle (13). The bottom of the baffle (13) is fixedly connected to the base (11). The work surface (12) is located inside the baffle (13). The work surface (12) is fixedly connected to the base (11). The surface of the work surface (12) is provided with a fixing component (2). The top of the baffle (13) is provided with a top cover (14). The bottom of the top cover (14) is fixedly connected to the baffle (13). A door is provided on one side of the baffle (13).

3. The high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 2, characterized in that: The fixing component (2) includes a support plate (21) and a limiting block (22). The support plate (21) is located on the surface of the workbench (12). The bottom end of the support plate (21) is fixedly connected to the workbench (12). A placement groove (211) is provided on the support plate (21). The limiting block (22) is provided on the surface of the support plate (21). The limiting block (22) is slidably connected to the support plate (21). A drive motor (23) is provided on one side of the limiting block (22). The fixed end of the drive motor (23) is fixedly connected to the support plate (21). The output end of the drive motor (23) is fixedly connected to the limiting block (22).

4. The high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 3, characterized in that: The surface of the bearing plate (21) is provided with a clamping member (24). One end of the clamping member (24) is slidably connected to the bottom end of the placement groove (211). A strain gauge (25) is provided on one side of the clamping member (24). A connecting post (26) is provided between the strain gauge (25) and the clamping member (24). One end of the connecting post (26) is slidably connected to the clamping member (24), and the other end of the connecting post (26) is rotatably connected to the strain gauge (25). The bottom end of the placement groove (211) is provided with a bottom block (2). 7) The bottom block (27) is slidably connected to the bearing plate (21). The bottom end of the bottom block (27) is provided with a hydraulic rod (28). The telescopic end of the hydraulic rod (28) is fixedly connected to the bottom block (27). The fixed end of the hydraulic rod (28) is fixedly connected to the bottom end of the placement groove (211). Connecting rods (29) are provided on both sides of the hydraulic rod (28). One end of the connecting rod (29) is rotatably connected to the hydraulic rod (28). The other end of the connecting rod (29) is rotatably connected to the bottom end of the clamping member (24).

5. A high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 4, characterized in that: The first temperature control component (3) includes a first infusion pipe (31) and a centrifugal pump (32). The first infusion pipe (31) is located inside the base (11). The pipe body of the first infusion pipe (31) extends to the surface of the workbench (12). Both ends of the first infusion pipe (31) extend to the outside of the base (11). The centrifugal pump (32) is provided at the input end of the first infusion pipe (31).

6. The high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 5, characterized in that: The second temperature control component (4) includes a second infusion pipe (41) and a solenoid valve (42). The second infusion pipe (41) is located inside the base (11) and is located on one side of the first infusion pipe (31). One end of the second infusion pipe (41) extends to the surface of the support plate (21), and the other end of the second infusion pipe (41) extends to the outside of the base (11). The input end of the second infusion pipe (41) is provided with a solenoid valve (42).

7. A high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 6, characterized in that: The detection component (5) includes a connecting block (51) and a semiconductor (52). The limiting block (22) has a groove (221). The semiconductor (52) is located inside the groove (221). The connecting block (51) is located outside the groove (221). The connecting block (51) is used to connect with the drive shaft of the magnetic levitation motor. The connecting block (51) and the semiconductor (52) are rotatably connected. A magnetic block (53) is provided on the side of the connecting block (51) close to the groove (221). The magnetic block (53) is fixedly connected to the connecting block (51).

8. A high and low temperature testing device for a magnetic levitation motor with temperature cycle regulation function according to claim 7, characterized in that: The second infusion pipe (41) is provided with a protective shell (54) at one end of the support plate (21) of the platform. The protective shell (54) has a hollow cavity inside and a thermocouple (55) is provided inside the protective shell (54). The thermocouple (55) is located in the hollow cavity.

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