Dynamic water-cooling balance equipment for magnetic levitation unit

Abstract

The utility model relates to the technical field of magnetic suspension equipment cooling, in particular to dynamic water-cooling balance equipment for a magnetic suspension unit, which comprises a main cooling system, a dynamic adjusting system, an auxiliary cooling system and a temperature monitoring and control system. Three working modes (closed circulation heat absorption, active heat dissipation circulation and pressure relief protection) are intelligently switched through the electronic thermostat, and the cooling requirements of equipment in different power states are accurately matched. During low-power operation, a heat dissipation loop and an external fan are completely closed, heat is absorbed only through heat capacity of cooling liquid, and zero-additional-energy-consumption cooling is achieved; full heat dissipation circulation is started at high power, and the problem of high energy consumption caused by continuous operation of a traditional system is avoided; moreover, a wing-shaped sheet runner with an inclination angle of 10-15 degrees is also designed in the equipment, so that the dual effects of increasing the heat dissipation area and inducing controllable turbulence are simultaneously realized in a key heating area of the stator, the damage capability of a thermal boundary layer is greatly enhanced, local hot spots are eradicated, and the comprehensive breakthrough of dynamic cooling is realized.

Description

A dynamic water-cooling balancing device for magnetic levitation units Technical Field

[0001] This utility model relates to the field of cooling technology for magnetic levitation equipment, specifically to a dynamic water-cooling balance device for magnetic levitation units. Background Technology

[0002] Magnetic levitation variable frequency centrifugal chiller units (referred to as magnetic levitation chillers) are a type of highly efficient and energy-saving central air conditioning system, widely used in large commercial buildings, data centers, hospitals, hotels, and other fields. Combining liquid cooling technology and magnetic levitation bearing technology, it features high efficiency and energy saving, environmental friendliness, low noise, stable operation, and long service life.

[0003] Currently, cooling methods for magnetic levitation engines are divided into air cooling and liquid cooling. Air cooling cools the magnetic levitation engine by introducing air into it and carrying away the internal heat. This method is simple and easy to operate, but it inevitably introduces impurities into the unit during air circulation. Liquid cooling, on the other hand, uses a liquid circulation system to efficiently dissipate heat from the magnetic levitation engine. This method has high heat dissipation efficiency and a fast cooling rate, but the high efficiency also brings high load. A water cooling system running at full power will greatly increase the overall maintenance cost of the magnetic levitation engine.

[0004] To address the aforementioned issues, the inventors attempted to design a dynamic water-cooling balancing device for magnetic levitation units. This device dynamically adjusts the coolant operating mode based on real-time load and ambient temperature, achieving dynamic balance of the liquid cooling system to match the different power levels of the magnetic levitation unit. Summary of the Invention

[0005] To achieve the above objectives, this utility model provides a dynamic water-cooling balance device for magnetic levitation units, including a main cooling system, a dynamic adjustment system, an auxiliary cooling system, and a temperature monitoring and control system.

[0006] The main cooling system consists of an outer casing, an inner casing, and a cooling channel formed between them; the cooling channel is distributed along the axial direction of the magnetic levitation machine's shaft; the channel interfaces communicating with the cooling channel include: a magnetic levitation machine inlet and a first outlet located at both ends of the bottom of the magnetic levitation machine, and a second outlet and a third outlet located at the top of the magnetic levitation machine.

[0007] The dynamic adjustment system includes a coolant tank, an electronic thermostat, and a pump. The coolant tank housing has a central space, a top inlet and an overflow outlet, a top side outlet, and a bottom outlet. The electronic thermostat includes a hollow cylindrical housing, an outlet at the top axial end of the housing, a collection port at the bottom axial end, and an inlet on the side. The pump includes a body, an inlet and an outlet.

[0008] According to the coolant flow circulation logic, the pipe leading from the coolant tank outlet is connected to the pump inlet, the pipe leading from the pump outlet is connected to the magnetic levitation machine inlet, the pipe leading from the second outlet is connected to the electronic thermostat inlet, the pipes leading from the first and third outlets converge and connect at the junction; the pipe leading from the electronic thermostat outlet is connected to the exchange port.

[0009] The auxiliary cooling system is an external fan located between the coolant tank and the pump, and the rotation axis of the external fan is parallel to the space between the center of the coolant tank housing and the space between them.

[0010] Furthermore, at the location of the cooling channel near the stator of the maglev train, the outer casing that makes up the cooling channel protrudes in a direction away from the central axis of the maglev train to form fins that are evenly distributed. The angle between the maximum cross-section of the fin and the central axis is 10 to 15°.

[0011] Explanation: The finned design significantly increases the heat dissipation surface area, greatly improving the heat exchange efficiency between the cooling channel and the external environment; and the specific angle design (10-15°) helps guide the coolant flow to generate appropriate turbulence, destroying the thermal boundary layer, further enhancing the heat dissipation effect on the key heat-generating areas of the stator, and avoiding local overheating.

[0012] Furthermore, the electronic thermostat is equipped with an electrically controlled valve, which can control the opening and closing of the liquid outlet and the liquid collection port of the electronic thermostat.

[0013] Note: The electrically controlled valve can adjust its internal opening width in real time according to electrical signals, thereby controlling the opening and closing of the liquid outlet and collection port of the electronic thermostat, thus achieving dynamic balance of the liquid cooling system with different power ratings compared to the magnetic levitation machine.

[0014] When the magnetic levitation machine is running at low power (such as in scenarios where the heat dissipation demand is constant), the electronic control valve controls the electronic thermostat to close the outlet and open the collection port; then the coolant will not flow back to the coolant tank, and the coolant is confined inside the magnetic levitation machine, absorbing heat through its own specific heat capacity; at this time, the external fan does not need to be turned on.

[0015] When the magnetic levitation machine is running at high power (such as when the equipment is frequently started and stopped or the power changes significantly), the electronic control valve controls the electronic thermostat to open the outlet and close the collection port. Then, the coolant that has absorbed heat in the magnetic levitation machine will flow back to the coolant tank. At this time, the external fan is turned on to accelerate the cooling of the coolant in the coolant tank and the coolant in the fins through convection, further reducing the temperature of the coolant in the system.

[0016] Furthermore, the dynamic adjustment system also includes a pressure relief box, which has a pressure relief box inlet at the bottom and an air valve at the top. The top cover of the air valve has an air hole, and the inside of the top cover has a gasket with a narrow air gap. The pipe leading out from the pressure relief box inlet is connected to the overflow port on the coolant tank.

[0017] A pressure-vacuum valve is provided at the aforementioned overflow outlet; the pressure-vacuum valve includes a pressure valve that faces the coolant tank in the return direction and a vacuum valve that moves away from the coolant tank in the return direction.

[0018] Explanation: The pressure relief tank acts as a system pressure buffer container, effectively absorbing any overflow caused by the thermal expansion of the coolant. When the maglev train is at extremely high temperatures, the coolant volume expands rapidly. At this time, the pressure valve at the overflow port will be opened, allowing the high-temperature coolant to flow into the pressure relief tank, preventing the pipes from rupturing due to high pressure. When the internal temperature of the maglev train drops, the pressure relief tank is connected to the outside atmosphere through an air valve, so the external air pressure will force the coolant in the pressure relief tank back into the coolant tank (at this time, the vacuum valve at the overflow port will be opened), preventing coolant loss.

[0019] Furthermore, the temperature monitoring and control system includes a temperature sensor disposed in the cooling channel, and a controller electrically connected to the electronic thermostat and an external fan.

[0020] The explanation is that by setting temperature sensors at key locations in the cooling channel, the temperature of the core heat-generating area of ​​the magnetic levitation machine can be monitored in real time and accurately. Based on the collected temperature data, the controller intelligently adjusts the opening and closing status of the electronic control valve (controlling the coolant circulation path) and the operation of the external fan to form a closed-loop control, ensuring that the most suitable cooling capacity can be provided under various operating conditions and achieving dynamic temperature balance.

[0021] Furthermore, a pressure-vacuum valve is provided at the overflow outlet; the pressure-vacuum valve includes a pressure valve that is slidably connected to the inner wall of the overflow outlet and a pressure valve that is slidably connected to the center slot of the pressure valve, and the self-return direction of the pressure valve is towards the coolant tank, while the self-return direction of the vacuum valve is away from the coolant tank.

[0022] Note: When the pressure valve returns to its initial position, it will block the connection between the overflow port and the liquid inlet of the pressure relief tank. When the vacuum valve returns to its initial position, it will block the connection between the overflow port and the liquid inlet of the pressure relief tank.

[0023] Compared with existing liquid cooling equipment for magnetic levitation machines, the advantages of this invention are:

[0024] (1) The device intelligently switches between three operating modes (closed-loop heat absorption, active heat dissipation circulation, and pressure relief protection) through an electronic thermostat to precisely match the cooling requirements of the equipment under different power conditions. When operating at low power, the heat dissipation circuit and external fan are completely shut off, and the device relies solely on the heat capacity of the coolant to absorb heat, achieving zero additional energy consumption for cooling. When operating at high power, the full heat dissipation circulation is activated to avoid the high energy consumption problem of continuous operation of traditional systems.

[0025] (2) This equipment takes "dynamic sensing-intelligent diversion-efficient heat dissipation-pressure self-balancing" as its core, and solves the pain points of high energy consumption, slow response, poor thermal uniformity and pressure runaway of traditional liquid cooling systems. It achieves a comprehensive breakthrough in energy saving, heat dissipation efficiency, safety and control precision. Attached Figure Description

[0026] Figure 1 is a structural schematic diagram of this utility model;

[0027] Figure 2 is a schematic diagram showing the connection of the various systems of this utility model;

[0028] Figure 3 is a cross-sectional view of the magnetic levitation machine through the axis;

[0029] Figure 4 is a partial enlarged view of the structure at point A in Figure 1;

[0030] Figure 5 is a partial enlarged view of the structure at point B in Figure 1;

[0031] Figure 6 is a magnified view of the structure at point C in Figure 1.

[0032] In the picture:

[0033] 1. Main cooling system; 11. Outer casing; 111. Magnetic levitation inlet; 112. First outlet; 113. Second outlet; 114. Third outlet; 115. Fin-shaped fins; 12. Inner casing; 13. Cooling channels;

[0034] 2. Dynamic adjustment system; 21. Coolant tank; 211. Filler port; 212. Overflow port; 2121. Pressure valve; 2122. Vacuum valve; 213. Exchange port; 214. Coolant tank outlet; 22. Electronic thermostat; 221. Cylindrical housing; 222. Electronic thermostat outlet; 223. Manifold; 224. Electronic thermostat inlet; 225. Electrically controlled valve; 23. Pump; 231. Body; 232. Pump inlet; 233. Pump outlet; 24. Pressure relief tank; 241. Pressure relief tank inlet; 242. Air valve; 2421. Air vent; 2422. Gasket;

[0035] 3. Auxiliary cooling system; 31. External fan;

[0036] 4. Temperature monitoring and control system; 41. Temperature sensor; 42. Controller;

[0037] 5. Magnetic levitation machine; 51. Stator; 52. Rotary shaft. Detailed Implementation

[0038] To further illustrate the methods and effects of this utility model, the technical solution of this utility model will be clearly and completely described below in conjunction with experiments.

[0039] Example 1: The description of this example is a dynamic water-cooling balance device for a magnetic levitation unit.

[0040] In this embodiment, the parameters of the magnetic levitation machine to be implemented are 180kW / 17krpm, and the temperature at the stator during stable operation is 95℃.

[0041] Referring to Figure 1, the dynamic liquid cooling balance device used for the above-mentioned magnetic levitation machine includes a main cooling system 1, a dynamic adjustment system 2, an auxiliary cooling system 3, and a temperature monitoring and control system 4;

[0042] Referring to Figures 2 and 3, the main cooling system 1 consists of an outer casing 11, an inner casing 12, and a cooling channel 13 formed between them; the cooling channel 13 is distributed along the axial direction of the rotating shaft 52 of the magnetic levitation machine 5; the channel interfaces communicating with the cooling channel 13 include: a magnetic levitation machine liquid inlet 111 and a first liquid outlet 112 located at both ends of the bottom of the magnetic levitation machine 5, and a second liquid outlet 113 and a third liquid outlet 114 located at the top of the magnetic levitation machine 5;

[0043] The dynamic adjustment system 2 includes a coolant tank 21, an electronic thermostat 22, and a pump 23 (the pump 23 used in this embodiment is a small water-cooled pump manufactured by Yibang Electric Co., Ltd.); the coolant tank 21 has a central space partition at the center of the shell, and has a filling port 211 and an overflow port 212 at the top, an exchange port 213 on the top side, and a coolant tank outlet 214 at the bottom; the electronic thermostat 22 includes a hollow cylindrical shell 221, an electronic thermostat outlet 222 at the axial top of the cylindrical shell 221, a collection port 223 at the axial bottom of the cylindrical shell 221, and an electronic thermostat inlet 224 on the side of the cylindrical shell 221; the pump 23 includes a body 231, and a pump inlet 232 and a pump outlet 233 on the body 231;

[0044] According to the coolant flow circulation logic, the pipe leading from the coolant tank outlet 214 is connected to the pump inlet 232, the pipe leading from the pump outlet 233 is connected to the magnetic levitation machine inlet 111, the pipe leading from the second outlet 113 is connected to the electronic thermostat inlet 224, the pipes leading from the first outlet 112 and the third outlet 114 converge and connect at the converging port 223; the pipe leading from the electronic thermostat outlet 222 is connected to the exchange port 213.

[0045] The auxiliary cooling system 3 is an external fan 31. The external fan 31 is located between the coolant tank 21 and the pump 23, and the rotation axis of the external fan 31 is parallel to the space between the coolant tank 21 and the center of the housing. In this embodiment, the external fan 31 is a commercially available YWF external rotor axial flow fan, model 500S.

[0046] Specifically, at the location of the cooling channel 13 near the stator 51 of the magnetic levitation machine 5, the outer casing 11 that makes up the cooling channel 13 protrudes in a direction away from the central axis of the magnetic levitation machine 5 to form fin-shaped plates 115 that are evenly distributed. The angle between the maximum cross-section of the fin-shaped plate 115 and the central axis of the rotating shaft 52 is 10°.

[0047] Referring to Figure 4, in this embodiment, the electronic thermostat 22 is equipped with an electronically controlled valve 225. This electronically controlled valve 255 is the same as the electronically controlled valve of the commercially available electronic thermostat with OE number A2602000900. The electronically controlled valve 255 can control the opening and closing of the electronic thermostat outlet 222 and the collection port 223 by controlling the position of the two end caps.

[0048] See Figure 6 for details. The dynamic adjustment system 2 also includes a pressure relief box 24. The pressure relief box 24 has a pressure relief box inlet 241 at the bottom and an air valve 242 at the top. The top cover of the air valve 242 has an air hole 2421 and a gasket 2422 with a narrow air gap inside the top cover.

[0049] Specifically, the pipe leading out from the pressure relief tank inlet 241 is connected to the overflow port 212 on the coolant tank 21.

[0050] Specifically, the temperature monitoring and control system 4 includes a pre-embedded temperature sensor 41 installed in the cooling channel 13 (in this embodiment, the temperature sensor can be a three-wire thermocouple temperature sensor produced by Shanghai Fengran Automation Instrument Factory), and a controller 42 electrically connected to the electronic thermostat 22 and the external fan 31. In this embodiment, the controller 42 is a commercially available programmable logic controller Micro800 series.

[0051] See Figure 5 for details. A pressure-vacuum valve is provided at the overflow port 212. The pressure-vacuum valve consists of a pressure valve 2121 and a vacuum valve 2122.

[0052] Pressure valve 2121 is slidably connected to the inner wall of overflow port 212. Pressure valve 2121 includes a slotted pressure valve head at the inner center and a compression spring disposed between the pressure valve head and the inner wall of the overflow port 212. The above structure makes the self-return direction of pressure valve 2121 face towards coolant tank 21.

[0053] Vacuum valve 2122 is slidably connected to the slot of pressure valve 2121. Vacuum valve 2122 includes a vacuum valve head with a sliding column in the center and a tension spring sleeved on the sliding column. One end of the tension spring is connected to the vacuum valve head, and the other end is connected to a limiting block provided on the inner wall of the overflow port 212. The self-return direction of the vacuum valve 2122 is away from the coolant tank 21.

[0054] When the pressure valve 2121 returns to its initial position, it will block the connection between the overflow port 212 and the liquid inlet 241 of the pressure relief tank. When the vacuum valve 2122 returns to its initial position, it will block the connection between the overflow port 212 and the liquid inlet 241 of the pressure relief tank.

[0055] Example 2: The description in this example is a dynamic liquid cooling balance device for a magnetic levitation machine under another set of parameters.

[0056] In this embodiment, the parameters of the magnetic levitation machine to be implemented are 180kW / 17krpm.

[0057] Referring to Figure 1, the dynamic liquid cooling balance device used for the above-mentioned magnetic levitation machine includes a main cooling system 1, a dynamic adjustment system 2, an auxiliary cooling system 3, and a temperature monitoring and control system 4;

[0058] Referring to Figures 2 and 3, the main cooling system 1 consists of an outer casing 11, an inner casing 12, and a cooling channel 13 formed between them; the cooling channel 13 is distributed along the axial direction of the rotating shaft 52 of the magnetic levitation machine 5; the channel interfaces communicating with the cooling channel 13 include: a magnetic levitation machine liquid inlet 111 and a first liquid outlet 112 located at both ends of the bottom of the magnetic levitation machine 5, and a second liquid outlet 113 and a third liquid outlet 114 located at the top of the magnetic levitation machine 5;

[0059] The dynamic adjustment system 2 includes a coolant tank 21, an electronic thermostat 22, and a pump 23. The coolant tank 21 has a central space at the center of its housing, and has a filling port 211 and an overflow port 212 at the top, an exchange port 213 on the top side, and a coolant tank outlet 214 at the bottom. The electronic thermostat 22 includes a hollow cylindrical housing 221, an electronic thermostat outlet 222 at the axial top of the cylindrical housing 221, a collecting port 223 at the axial bottom of the cylindrical housing 221, and an electronic thermostat inlet 224 on the side of the cylindrical housing 221. The pump 23 includes a body 231, and a pump inlet 232 and a pump outlet 233 on the body 231.

[0060] According to the coolant flow circulation logic, the pipe leading from the coolant tank outlet 214 is connected to the pump inlet 232, the pipe leading from the pump outlet 233 is connected to the magnetic levitation machine inlet 111, the pipe leading from the second outlet 113 is connected to the electronic thermostat inlet 224, the pipes leading from the first outlet 112 and the third outlet 114 converge and connect at the converging port 223; the pipe leading from the electronic thermostat outlet 222 is connected to the exchange port 213.

[0061] The auxiliary cooling system 3 is an external fan 31, which is located between the coolant tank 21 and the pump 23. The rotation axis of the external fan 31 is parallel to the space between the coolant tank 21 and the center of the housing. In this embodiment, the external fan 31 is a commercially available YWF external rotor axial flow fan, model 500S.

[0062] Specifically, at the location of the cooling channel 13 near the stator 51 of the magnetic levitation machine 5, the outer casing 11 that makes up the cooling channel 13 protrudes in a direction away from the central axis of the magnetic levitation machine 5 to form fin-shaped plates 115 that are evenly distributed. The angle between the maximum cross-section of the fin-shaped plate 115 and the central axis of the rotating shaft 52 is 15°.

[0063] Referring to Figure 4, the electronic thermostat 22 is equipped with an electrically controlled valve 225. In this embodiment, the electronic thermostat 22 is equipped with an electrically controlled valve 225. This electrically controlled valve 255 is the same as the electrically controlled valve in the commercially available electronic thermostat with OE number A2602000900. The electrically controlled valve 255 can control the opening and closing of the electronic thermostat outlet 222 and the collection port 223 by controlling the position of the two end caps.

[0064] See Figure 6 for details. The dynamic adjustment system 2 also includes a pressure relief box 24. The pressure relief box 24 has a pressure relief box inlet 241 at the bottom and an air valve 242 at the top. The top cover of the air valve 242 has an air hole 2421 and a gasket 2422 with a narrow air gap inside the top cover.

[0065] Specifically, the pipe leading out from the pressure relief tank inlet 241 is connected to the overflow port 212 on the coolant tank 21.

[0066] Specifically, the temperature monitoring and control system 4 includes a temperature sensor 41 disposed in the cooling channel 13, and a controller 42 electrically connected to the electronic thermostat 22 and the external fan 31. The controller 42 used in this embodiment is a commercially available programmable logic controller Micro800 series.

[0067] See Figure 5 for details. A pressure-vacuum valve is provided at the overflow port 212. The pressure-vacuum valve consists of a pressure valve 2121 and a vacuum valve 2122.

[0068] Pressure valve 2121 is slidably connected to the inner wall of overflow port 212. Pressure valve 2121 includes a slotted pressure valve head at the inner center and a compression spring disposed between the pressure valve head and the inner wall of the overflow port 212. The above structure makes the self-return direction of pressure valve 2121 face towards coolant tank 21.

[0069] Vacuum valve 2122 is slidably connected to the slot of pressure valve 2121. Vacuum valve 2122 includes a vacuum valve head with a sliding column in the center and a tension spring sleeved on the sliding column. One end of the tension spring is connected to the vacuum valve head, and the other end is connected to a limiting block provided on the inner wall of the overflow port 212. The self-return direction of the vacuum valve 2122 is away from the coolant tank 21.

[0070] When the pressure valve 2121 returns to its initial position, it will block the connection between the overflow port 212 and the liquid inlet 241 of the pressure relief tank. When the vacuum valve 2122 returns to its initial position, it will block the connection between the overflow port 212 and the liquid inlet 241 of the pressure relief tank.

[0071] Experimental Example: The description of this experimental example is based on the scheme described in Example 2, and aims to illustrate the working process of this utility model.

[0072] S1. System Initialization and Cold Start:

[0073] S1-1. Fill coolant to the standard level through the filler port 211 at the top of the coolant tank 21;

[0074] S1-2. Start the magnetic levitation machine 5, and the pump 23 will run synchronously. The coolant flow direction is: coolant tank 21 → pump 23 → magnetic levitation machine inlet 111 → cooling channel 13.

[0075] S1-3, Electronic thermostat 22, solenoid valve 225 initial state:

[0076] The electronic thermostat outlet 222 is closed (blocking the path to the coolant tank), and the collection port 223 is opened (the coolant flows directly back to the pump 23 through the first outlet 112 and the third outlet 114), forming a closed small circulation: the coolant only flows between the magnetic levitation machine and the pump.

[0077] S1-4, External fan 31 remains off:

[0078] During the cold start phase, the coolant's specific heat capacity is used to naturally absorb heat, accelerating the equipment's temperature rise to the operating temperature.

[0079] S2, Low-to-medium power operation temperature control:

[0080] S2-1, Temperature sensor 41 monitors the temperature at stator 51 in the cooling channel 13 in real time (let the monitoring point be T).

[0081] S2-2. If T < preset threshold T0 (95℃), maintain small circulation mode, external fan 31 remains off, and coolant continues to absorb heat to avoid overcooling and efficiency reduction.

[0082] S3, High-power switching active cooling:

[0083] S3-1. When the load on the magnetic levitation machine 5 increases and the monitored temperature T≥T0, the controller 42 sends a command to the electronic thermostat 22:

[0084] Open the electronic thermostat outlet 222 (connecting to the coolant tank 214), close the manifold 223 (blocking direct backflow), and simultaneously start the external fan 31 to switch the coolant flow direction:

[0085] High-temperature liquid flows from the second outlet 113 → electronic thermostat inlet 224 → electronic thermostat outlet 222 → coolant tank 21; liquid flows from the first outlet 112 and the third outlet 114 through the confluence port 223 → electronic thermostat outlet 222 → coolant tank 21, forming a large-scale heat dissipation loop.

[0086] S3-2, The airflow from the external fan 31 penetrates the space between the coolant tank 21 and the finned area 115 within the coolant tank 21, causing the coolant temperature to drop rapidly to T. <T0;

[0087] S4. Extreme operating condition pressure relief protection:

[0088] S4-1. If continuous overload operation causes coolant expansion: High-temperature coolant overflows from coolant tank 21 overflow port 212 (pressure valve 2121 is open, vacuum valve 2122 is closed) → pressure relief tank 24. The air valve 242 at the top of pressure relief tank 24 automatically releases air to prevent the pipeline from rupturing due to pressure.

[0089] S4-2, System cooling after load reduction:

[0090] The coolant in the pressure relief tank 24 is automatically returned to the coolant tank 21 by atmospheric pressure (pressure valve 2121 is closed, vacuum valve 2122 is open), resulting in zero coolant loss.

[0091] S5, Dynamic Balance Closed-Loop Control:

[0092] S5-1, Controller 42 continuously compares the temperature T at the inner stator 51 of the magnetic levitation machine 5 with the set temperature threshold T0:

[0093] If T≥T0: Maintain the large circulation + external fan 31 operation; if T

Claims

1. A dynamic water-cooling balancing device for a magnetic levitation unit, characterized in that, It includes a main cooling system (1), a dynamic adjustment system (2), an auxiliary cooling system (3), and a temperature monitoring and control system (4); the main cooling system (1) consists of an outer casing (11), an inner casing (12), and a cooling channel (13) formed between them; the cooling channel (13) is distributed along the axial direction of the rotating shaft (52) of the magnetic levitation machine (5); the channel interface communicating with the cooling channel (13) includes: a magnetic levitation machine inlet (111) and a first outlet (112) located at both ends of the bottom of the magnetic levitation machine (5), and a [missing information - likely a typo, should be inserted here]. The system includes a second outlet (113) and a third outlet (114); the dynamic adjustment system (2) includes a coolant tank (21), an electronic thermostat (22), and a pump (23); the coolant tank (21) has a central space partition at the center of its shell, and a filling port (211) and an overflow port (212) at the top, an exchange port (213) on the top side, and a coolant tank outlet (214) at the bottom; the electronic thermostat (22) includes a hollow cylindrical shell (221) and an electronic thermostat outlet (214) located at the axial top of the cylindrical shell (221). 22) A collection port (223) located at the bottom axial end of the cylindrical shell (221), and an electronic thermostat inlet (224) opened on the side of the cylindrical shell (221); the pump (23) includes a body (231), and a pump inlet (232) and a pump outlet (233) opened on the body (231); according to the coolant flow circulation logic, the pipe leading out from the coolant tank outlet (214) is connected to the pump inlet (232), and the pipe leading out from the pump outlet (233) is connected to the magnetic levitation machine inlet (111), and the... The pipe leading out of the second liquid outlet (113) is connected to the liquid inlet (224) of the electronic thermostat. The pipes leading out of the first liquid outlet (112) and the third liquid outlet (114) converge and connect at the converging port (223). The pipe leading out of the liquid outlet (222) of the electronic thermostat is connected to the exchange port (213). The auxiliary cooling system (3) is an external fan (31). The external fan (31) is located between the coolant tank (21) and the pump (23), and the rotation axis of the external fan (31) is parallel to the space between the center of the coolant tank (21) shell.

2. The dynamic water-cooling balancing device for a magnetic levitation unit as described in claim 1, characterized in that, The cooling channel (13) is located near the stator (51) of the magnetic levitation machine (5). The outer casing (11) that makes up the cooling channel (13) protrudes in a direction away from the central axis of the magnetic levitation machine (5) to form fins (115) that are evenly distributed. The angle between the maximum cross-section of the fins (115) and the central axis of the rotating shaft (52) is 10 to 15°.

3. The dynamic water-cooling balancing device for a magnetic levitation unit as described in claim 1, characterized in that, The electronic thermostat (22) is equipped with an electrically controlled valve (225) that can control the opening and closing of the electronic thermostat outlet (222) and the collection port (223).

4. The dynamic water-cooling balancing device for a magnetic levitation unit as described in claim 1, characterized in that, The dynamic adjustment system (2) also includes a pressure relief box (24), which has a pressure relief box inlet (241) at the bottom and an air valve (242) at the top.

5. The dynamic water-cooling balancing device for a magnetic levitation unit as described in claim 4, characterized in that, The pipe leading out from the inlet (241) of the pressure relief tank is connected to the overflow port (212) on the coolant tank (21).

6. The dynamic water-cooling balancing device for a magnetic levitation unit as described in claim 4, characterized in that, The temperature monitoring and control system (4) includes a temperature sensor (41) disposed in the cooling channel (13) and a controller (42) electrically connected to the electronic thermostat (22) and the external fan (31).

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