A magnetic suspension motor and a gas separation and collection device

Abstract

The purpose of the present invention is to provide a magnetic levitation motor, which solves the problem of collision between the rotor and the stator in the magnetic levitation motor. The magnetic levitation motor comprises a working fluid compression part, a magnetic levitation rotor and a gas compression part. The two ends of the magnetic levitation rotor are respectively connected to the working fluid compression part and the gas compression part. A magnetic conductive ring stator is arranged corresponding to the magnetic levitation rotor. The magnetic conductive ring stator is provided with a groove. The convex ring extends into the groove. Since the magnetic levitation rotor cooperates with the magnetic conductive ring stator, the induction coil is also wound on the groove. The magnetic field formed by the magnetic levitation rotor and the magnetic conductive ring stator is not easily disturbed by the external environmental magnetic field. In addition, fewer sensors are installed. When the system fails or the power is suddenly cut off, the collision between the magnetic levitation rotor and the magnetic conductive ring stator is buffered, thereby solving the problems of magnetic levitation motor being disturbed by the magnetic field, being too large in size and extending the service life.

Description

Technical Field

[0001] The invention relates to the field of air compressors, and in particular to a magnetic suspension motor and a gas separation and collection device. Background Art

[0002] In modern industry, nitrogen is widely used in many fields, such as chemical industry, pharmaceutical industry, electronics, etc. Among them, membrane nitrogen generator is widely used due to its advantages of high nitrogen purity, good stability and easy maintenance. It is mainly composed of compressor, filter, refrigerator, heater, membrane assembly, oxygen analyzer and buffer tank.

[0003] The main principle of membrane nitrogen generator:

[0004] First, the air is compressed by a compressor and cooled to a set temperature by a cooler, so that the water vapor in it is condensed into liquid water, and then enters the filter element for filtration to remove oil, impurities, particles, etc., so as to avoid irreversible damage to the membrane parameters.

[0005] Secondly, the filtered air enters the electric heater to make its temperature meet the working requirements of the membrane, and then the air enters the membrane assembly. The membrane assembly is composed of multiple semipermeable membranes. When the air passes through the membrane assembly, the oxygen, carbon dioxide and other components in it will be retained by the semipermeable membrane, while nitrogen can pass through the semipermeable membrane, thereby obtaining high-purity nitrogen.

[0006] Finally, the generated nitrogen is detected and adjusted by a gas mass meter and an oxygen analyzer, and is output for use after reaching the set nitrogen purity and flow requirements.

[0007] The main problems of CCS (Carbon Capture and Storage) at present are complex systems, high energy consumption, and the need for regular maintenance. The traditional process uses oil-lubricated compressors, which are prone to lubricant leakage, thus causing membrane failure, so a set of oil filters is required, but it still cannot avoid the impact on the working life of the membrane; because the membrane has high requirements for impurities and dew point of the incoming air, the traditional process is equipped with a chiller to condense the compressed air, which has high energy consumption and a high failure rate; in order to improve the efficiency of the membrane, an electric heater must also be equipped, resulting in additional energy consumption.

[0008] Therefore, how to further simplify the system composition through process innovation, avoid the collision between the motor's rotor and the phase, reduce system energy consumption and ensure that the air compressor is free of oil pollution is a problem that the nitrogen generator needs to solve. Summary of the invention

[0009] The purpose of the present invention is to provide a magnetic levitation motor, which solves the problem of collision between the rotor and the stator in the magnetic levitation motor.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] The present invention also provides a magnetic levitation motor, comprising a working fluid compression part, a magnetic levitation rotor and a gas compression part, wherein two ends of the magnetic levitation rotor are respectively connected to the working fluid compression part and the gas compression part, and a magnetic ring stator is arranged corresponding to the magnetic levitation rotor, the magnetic levitation rotor is sleeved on a first buffer washer and a second buffer washer, the magnetic ring stator is located between the first buffer washer and the second buffer washer, an induction coil is sleeved on the magnetic ring stator, a convex ring is arranged on the magnetic levitation rotor, a groove is arranged on the magnetic ring stator, and the convex ring extends into the groove.

[0012] Optionally, a filter is provided between the magnetic levitation motor and the refrigerant heat pump, and the filter is located on the ventilation duct.

[0013] Optionally, a detector is provided on the ventilation pipe, and the detector is located between the separation membrane and the collection tank.

[0014] Optionally, a coolant inlet pipe and a coolant outlet pipe are provided on the magnetic levitation motor, and the coolant inlet pipe and the coolant outlet pipe are respectively arranged at the inlet end and the outlet end of the refrigerant heat pump, and control valves are also provided on the coolant inlet pipe and the coolant outlet pipe.

[0015] Furthermore, the refrigerant heat pump includes a cooling pipe and a heating pipe, the cooling pipe and the heating pipe are internally connected, the cooling pipe and the cooling pipe are both hollow semi-cylinders, the coolant inlet pipe is connected to the cooling pipe, the coolant outlet pipe is connected to the heating pipe, and a first bracket is arranged in conjunction with the refrigerant heat pump, and the refrigerant heat pump is arranged on the first bracket.

[0016] Optionally, the ventilation duct between the refrigerant heat pump refrigeration part and the refrigeration part is at room temperature.

[0017] Optionally, the semiconductor heat pump includes a semiconductor tube and a semiconductor connector, two ends of the semiconductor connector are respectively connected to the two semiconductor tubes, a second bracket is arranged in conjunction with the semiconductor heat pump, and the semiconductor heat pump is arranged on the second bracket.

[0018] Furthermore, two semiconductor tubes are respectively connected at both ends of the semiconductor connector to form a heat pump unit, multiple layers of the heat pump units are arranged in the vertical direction of the bracket and multiple rows of the heat pump units are arranged in the horizontal direction, the distances between adjacent heat pump units are equal, and the multiple layers of the heat pump units and the multiple rows of the heat pump units form a spatial matrix.

[0019] The present invention also provides a gas separation and collection device, comprising a magnetic levitation motor, a refrigerant heat pump, a separation membrane and a ventilation pipe, characterized in that the air delivery end of the magnetic levitation motor is connected to the air inlet end of the ventilation pipe, the refrigerant heat pump and the separation membrane are both arranged on the ventilation pipe, the ventilation pipe passes through the refrigeration part and the heating part of the refrigerant heat pump in sequence, a semiconductor heat pump is coupled to the refrigerant heat pump, and a collection tank is provided at the air outlet end of the ventilation pipe.

[0020] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] A magnetic levitation motor of the present invention has a magnetic levitation rotor and a magnetic conductive ring stator, and the induction coil is also wound on the groove. The magnetic field formed by the magnetic levitation rotor and the magnetic conductive ring stator is not easily disturbed by the external environmental magnetic field, and fewer sensors are installed. When the system fails or the power is suddenly cut off, the collision between the magnetic levitation rotor and the magnetic conductive ring stator is buffered, thereby solving the problems of the magnetic levitation motor being disturbed by the magnetic field, being too large in size, and extending the service life.

[0022] Furthermore, in a gas separation and collection device of the present invention, since the semiconductor heat pump is coupled with the refrigerant heat pump, the two can be used separately or in combination, which greatly improves the nitrogen production efficiency. The magnetic levitation motor replaces the traditional oil-lubricated motor, which does not reduce energy consumption and does not require lubrication with lubricating oil, thereby solving the problem of high efficiency and low energy consumption of the air separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of a magnetic levitation motor and a gas separation and collection device according to a preferred embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A top view of the refrigerant heat pump shown;

[0026] Figure 3 yes Figure 2 A front view of a refrigerant heat pump is shown;

[0027] Figure 4 It is the internal structure diagram of the refrigerant heat pump and liquid tank;

[0028] Figure 5 yes Figure 1 A top view of a semiconductor heat pump coupled to a refrigerant heat pump is shown;

[0029] Figure 6 yes Figure 1 A cross-sectional view of the magnetic levitation motor shown;

[0030] Figure 7 It is the controller execution command graph.

[0031] The reference numerals are described as follows:

[0032] 1. Magnetic levitation motor; 2. Refrigerant heat pump; 3. Separation membrane; 4. Ventilation pipe; 5. Semiconductor heat pump; 6. Collection tank; 7. Filter; 8. Detector; 9. First bracket; 10. Second bracket;

[0033] 11. Working fluid compression unit; 12. Liquid tank; 13. Magnetic suspension rotor; 14. Gas compression unit; 15. First buffer gasket; 16. Second buffer gasket; 17. Magnetic ring stator; 18. Induction coil; 19. Gas tank; 20. Shell; 21. Coolant inlet pipe; 22. Coolant outlet pipe; 23. Control valve; 25. Cooling pipe; 26. Heating pipe; 51. Semiconductor tube; 52. Semiconductor connector; 53. Heat pump unit. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1As shown, it includes a magnetic levitation motor 1, a refrigerant heat pump 2, a separation membrane 3 and a ventilation pipe 4. The magnetic levitation motor 1 provides compressed air, and the ventilation pipe 4 is arranged at the air supply end of the magnetic levitation motor 1. The working principle of the magnetic levitation motor 1 is to use the force of a magnet to suspend the piston, eliminate the friction between the piston and the piston ring, thereby improving efficiency and lowering energy consumption. It also has excellent stability, can work for a long time indoors, can resist shock, is not affected by the environment, has a longer service life, and the magnetic levitation motor 1 has lower noise and can work indoors without affecting the surrounding environment. The magnetic levitation motor 1 is connected to the controller signal, and the controller (not shown in the figure) is connected.

[0038] The air is absorbed by the magnetic levitation motor 1, and then the magnetic levitation motor 1 compresses the air. The compressed air enters the refrigerant heat pump 2 through the ventilation pipe 4. The refrigerant heat pump 2 has two functions of cooling and heating. The compressed air is high in temperature. The compressed air enters the refrigerant heat pump 2 through the ventilation pipe 4 and is cooled first in the refrigeration part, so that the compressed air is cooled first in the refrigerant heat pump 2. After the temperature is reduced to a certain level, the compressed air is cooled during flow. The compressed air flows to the heating part of the refrigerant heat pump 2 in the ventilation pipe 4 to be heated and heated. The heated and heated compressed air then comes out through the heating part of the refrigerant heat pump 2. The compressed air keeps flowing in the ventilation pipe 4, and the compressed air is heated during flow. The temperature of the heated compressed air is suitable for separating nitrogen by the separation membrane 3.

[0039] The magnetic levitation motor 1 is connected to the controller signal, and the controller can start the magnetic levitation motor 1 or shut down the magnetic levitation motor 1. The refrigerant heat pump 2 is also connected to the controller signal. The cooling temperature of the refrigeration part of the refrigerant heat pump 2 is within a certain range, and the heating temperature of the heating part of the refrigerant heat pump 2 is also within a certain range. If the refrigeration temperature of the refrigerant heat pump 2 is not within the set range, the controller semi-closes the refrigerant heat pump 2, and the corresponding refrigerant heat pump 2 does not heat. If the heating temperature of the heating part of the refrigerant heat pump 2 is not within the set range, the controller semi-closes the refrigerant heat pump 2, and the corresponding refrigerant heat pump 2 does not cool. The controller can shut down the refrigerant heat pump 2 or start the refrigerant heat pump 2.

[0040] The heated and heated electric air passes through the ventilation pipe 4 to the separation membrane 3 for separation. The separation membrane 3 in the present invention is a nitrogen separation membrane. When the air passes through the separation membrane 3, impurity gases such as oxygen and carbon dioxide in the air will be retained by the semipermeable membrane, while nitrogen can pass through the semipermeable membrane to obtain high-purity nitrogen. The water in the air will vaporize due to the high temperature, and the water in the air will be retained by the semipermeable membrane in the form of water vapor, so the ventilation pipe 4 has high temperature resistance and good sealing.

[0041] When the treated electrically charged air passes through the hollow fiber membrane of the separation membrane 3, due to the differences in the dissolution rates and diffusion coefficients of various compressed gases in the membrane fibers inside the membrane tube, their permeation rates through the membrane fibers are different, thereby achieving the purpose of separating nitrogen and oxygen. The separated oxygen and other gases are discharged through the oxygen-rich exhaust port, and qualified nitrogen comes out through the separation membrane 3, and then the nitrogen passes through the detector 8 on the ventilation pipe 4.

[0042] A collecting tank 6 is arranged in communication with the separation membrane 3. The collecting tank 6 is used to collect the nitrogen separated from the separation membrane 3. An outlet pipe 61 is arranged on the upper part of the collecting tank 6. A one-way pneumatic valve (not shown in the figure) is arranged in the outlet pipe 61 to facilitate the connection of related equipment to the outlet pipe 61. The one-way pneumatic valve can ensure that the nitrogen only flows outward, and the outside air will not enter the collecting tank 6 through the one-way pneumatic valve. The outlet pipe 61 is a hollow cylinder.

[0043] A semiconductor heat pump 5 is coupled to the refrigerant heat pump 2. The two ends of the semiconductor heat pump 5 can be used for cooling and heating respectively, that is, the semiconductor heat pump 5 can become an additional heat source and cold source for the refrigerant heat pump 2. The cooling end of the semiconductor heat pump 5 half wraps the ventilation pipe 4. The cooling end of the semiconductor heat pump 5 and the cooling pipe 25 are combined to form a hollow column, that is, the ventilation pipe 4 is surrounded by the cooling end of the semiconductor heat pump 5 and the cooling pipe 25. The compressed air in the ventilation pipe 4 and the cooling pipe 25 can transfer heat to the cooling end of the semiconductor heat pump 5, thereby achieving cooling of the compressed air in the ventilation pipe 4 at the position of the cooling pipe 25, thereby cooling the compressed air in the refrigeration part of the refrigerant heat pump 2.

[0044] The heating end of the semiconductor heat pump 5 half wraps the ventilation pipe 4, and the heating end of the semiconductor heat pump 5 and the heating pipe 26 are surrounded by a hollow column, that is, the ventilation pipe 4 is again surrounded by the cooling end of the semiconductor heat pump 5 and the cooling pipe 25. Because the cooling pipe 25 and the heating pipe 26 are separated by a certain distance, the part of the ventilation pipe 4 in the cooling pipe 25 and the part in the heating pipe 26 are also separated by a certain distance. In this way, the compressed air is cooled by the cooling pipe 25 during the flow, and the cooled compressed air is also at a certain distance from the heating pipe 26. The heating end of the semiconductor heat pump 5 and the heating pipe 26 surround the ventilation pipe 4. At this time, the cooled compressed air in the ventilation pipe 4 can be heated to realize heat exchange, so that the temperature of the compressed air in the ventilation pipe 4 is suitable for the separation of nitrogen by the separation membrane 3, and the semiconductor heat pump 5 operates efficiently in a working environment below -15°C.

[0045] A filter 7 is provided between the magnetic levitation motor 1 and the refrigerant heat pump 2. The filter 7 is located on the ventilation pipe 4, that is, the compressed air is first filtered by the filter 7, and the filtered compressed air then enters the refrigeration part of the refrigerant heat pump 2 for cooling. The filter 7 removes moisture, oil, impurities, particles, etc. in the air. Moisture is the moisture in the air. When the air is compressed, the moisture in the air is filtered in the form of gas. At the same time, due to weather reasons, the moisture concentration in the air is different. After the compressed air is filtered, the humidity of the compressed air is reduced, so that the air remains appropriately dry or humid.

[0046] The filter 7 is connected to the controller signal. If the pressure difference at both ends of the filter 7 is not within the set range, it means that the filter element of the filter 7 needs to be replaced, there are impurities on the filter element of the filter 7, and the filter element of the filter 7 is blocked. Then, only a small amount of compressed air can pass through the filter 7, which causes low efficiency and the compressed air is wasted. At this time, the filter 7 turns off the magnetic levitation motor 1 and the refrigerant heat pump 2 until a new filter element or filter is replaced.

[0047] The separation membrane 3 is connected to the collection tank 6 through the ventilation pipe 4, which is equivalent to setting the separation membrane 3 on the ventilation pipe 4. The ventilation pipe 4 connects the inlet and outlet ends of the separation membrane 3. A detector 8 is set on the ventilation pipe 4. The detector 8 is located between the separation membrane 3 and the collection tank 6. The detector 8 is used to detect the purity, humidity, concentration, pressure, temperature and nitrogen flow rate of the separated nitrogen. If an abnormal value is detected, the detector 8 sends a signal to the control, and then the controller shuts down the magnetic levitation motor 1. The detector 8 can also record the nitrogen production time.

[0048] The control valve 23 is a solenoid valve or a pneumatic valve. The control valve 23 is connected to the controller signal. The controller can start the control valve 23 or close the control valve 23. The control valve 23 can also be adjusted manually. The control valve 23 can simultaneously open the channel of the coolant inlet pipe 21 and the channel of the coolant outlet pipe 22, or the control valve 23 simultaneously half-closes the channel of the coolant inlet pipe 21 and the channel of the coolant outlet pipe 22, and the control valve 23 only opens the channel of the coolant inlet pipe 21 and closes the channel of the coolant outlet pipe 22, and the control valve 23 only opens the channel of the coolant outlet pipe 22 and closes the channel of the coolant inlet pipe 21.

[0049] An inlet thermometer (not shown in the figure) is arranged in conjunction with the coolant inlet pipe 21, and an outlet thermometer (not shown in the figure) is arranged in conjunction with the coolant outlet pipe 22. Both the inlet thermometer and the outlet thermometer are connected to the controller signal. The inlet thermometer detects the temperature of the coolant when it comes out of the liquid tank 12. If the temperature of the coolant when it comes out of the liquid tank 12 is not within the set range, the inlet thermometer sends a signal to the controller, and the controller will shut down the magnetic levitation motor 1. When the magnetic levitation motor 1 is shut down, the working fluid compression part 11 is also shut down. If the outlet thermometer detects that the temperature of the reflux liquid in the coolant outlet pipe 22 is not within the set range, the outlet thermometer sends a signal to the controller, and the controller will shut down the magnetic levitation motor 1. When the magnetic levitation motor 1 is shut down, the working fluid compression part 11 is also shut down.

[0050] like Figure 2 and Figure 3 As shown, the ventilation pipe 4 between the refrigeration part and the refrigeration part of the refrigerant heat pump 2 is at room temperature. In the present invention, the ventilation pipe 4 between the cooling pipe 25 and the heating pipe 26 is outside the refrigerant heat pump 2, which means that the ventilation pipe 4 between the cooling pipe 25 and the heating pipe 26 is not inside the refrigerant heat pump 2, because the cooling pipe 25 and the refrigeration end of the semiconductor heat pump 5 enclose the ventilation pipe 4, and the temperature of the compressed air in the enclosed ventilation pipe 4 is reduced to a very low level. If the cooled compressed air directly enters the semi-enclosed area of ​​the heating pipe 26, under the joint heating of the heating pipe 26 and the heating end of the semiconductor heat pump 5, the temperature of the cooled compressed air cannot reach the temperature required by the separation membrane 3 to separate nitrogen. Therefore, the cooled compressed air passes through the normal temperature zone in the ventilation pipe 4, which can increase the temperature of the cooled compressed air in the ventilation pipe 4, which helps the cooled compressed air to reach the temperature required by the separation membrane 3 to separate nitrogen after heating.

[0051] The refrigerant heat pump 2 includes a cooling pipe 25 and a heating pipe 26. The refrigerant heat pump 2 is also connected to the controller signal. The cooling pipe 25 and the heating pipe 26 are connected to each other, but there is a certain distance between the cooling pipe 25 and the heating pipe 26. The cooling pipe 25 and the heating pipe 26 are not close to or directly connected.

[0052] However, the ventilation duct 4 is divided into three sections. The first section of the ventilation duct 4 is semi-enclosed by the cooling pipe 25, and the cooling pipe 25 is filled with coolant, so the filtered compressed air is cooled in the semi-enclosed area of ​​the cooling pipe 25, and the third section of the ventilation duct 4 is semi-enclosed by the heating pipe 26, so the cooled compressed air is heated in the semi-enclosed area of ​​the heating pipe 26. Because the cooling pipe 25 and the heating pipe 26 are connected to each other through the inside of the pipe (not shown in the figure), after the coolant cools the compressed air in the first section of the ventilation duct 4, the coolant absorbs heat and enters the heating pipe 26. At this time, the cooled compressed air enters the second section of the ventilation duct 4, that is, outside. The second section of the ventilation duct 4 is at room temperature, that is, the cooled compressed air enters the normal temperature pipe, and then the compressed air at room temperature enters the semi-enclosed area of ​​the heating pipe 26, that is, the third section of the ventilation duct 4, and the cooled compressed air is heated until the separation conditions of the separation membrane 3 are met.

[0053] Because the compressed air cooling is carried out in a flowing state, when the refrigerant heat pump 2 cools the compressed air, the compressed air temperature decreases and cannot directly enter the heating pipe 26 from the cooling pipe 25, that is, after the compressed air temperature decreases, it cannot directly enter the third section of the ventilation pipe 4 from the first section of the ventilation pipe 4. Within a limited time, the compressed air temperature in the heating pipe 26 cannot reach the separation condition of the separation membrane 3. Therefore, the cooled compressed air first enters the normal temperature state, that is, reaches the second section of the ventilation pipe 4, and then enters the third section of the ventilation pipe 4, that is, is heated in the half-wrapped state of the heating pipe 26, so that the separation condition of the separation membrane 3 can be achieved.

[0054] The compressed air enters into the half-wrapped area of ​​the cooling pipe 25 through the ventilation duct 4, that is, it first enters into the first section of the ventilation duct 4. The first section of the ventilation duct 4 is located in the half-wrapped area of ​​the cooling pipe 25, and the cooling liquid is passed through the cooling pipe 25. The semiconductor heat pump 5 is coupled to the outside of the cooling pipe 25. The cooling end of the semiconductor heat pump 5 and the cooling pipe 25 surround and wrap the first section of the ventilation duct 4. The heating end of the semiconductor heat pump 5 and the heating pipe 26 surround and wrap the third section of the ventilation duct 4. The refrigerant heat pump 2 and the semiconductor heat pump 5 can be started at the same time to cool the first section of the ventilation duct 4 and heat the second section of the ventilation duct 4, or only the refrigerant heat pump 2 can be started to cool the first section of the ventilation duct 4 and heat the third section of the ventilation duct 4, or only the semiconductor heat pump 5 can be started to cool the first section of the ventilation duct 4 and heat the third section of the ventilation duct 4. The refrigerant heat pump 2 is arranged on the first bracket 9.

[0055] like Figure 4 and Figure 5As shown, the semiconductor heat pump 5 includes a semiconductor tube 51 and a semiconductor connector 52 . Two ends of the semiconductor connector 52 are respectively connected to two semiconductor tubes 51 . The semiconductor heat pump 5 is disposed on the second bracket 10 .

[0056] The first bracket 9 and the second bracket 10 are spliced ​​together, and the upper end of the first bracket 9 and the upper end of the second bracket 10 are connected to form two holes, both of which are used to clamp the ventilation pipe 4. The cooling pipe 25 and the heating pipe 26 are respectively located on both sides of the first bracket 9 and the second bracket 10, or the second bracket 10 is installed in the middle of the first bracket 9, that is, the semiconductor heat pump 5 is located in the middle position of the cooling pipe 25 and the heating pipe 26.

[0057] Two semiconductor tubes 51 are connected to the two ends of the semiconductor connector 52 to form a heat pump unit 53. The second bracket 10 is provided with multiple layers of heat pump units 53 in the vertical direction and multiple rows of heat pump units 53 in the horizontal direction. The distances between adjacent heat pump units 53 are equal. The multiple layers of heat pump units 53 and the multiple rows of heat pump units 53 form a spatial matrix. The heat pump unit 53 includes multiple semiconductor connectors 52 connected to multiple semiconductor tubes 51. In the vertical direction of the second bracket 10, there is one layer, and such a setting has multiple layers. In the horizontal direction, such multiple layers have multiple rows. Such an arrangement enables the heat pump unit 53 to form a spatial matrix. The left and right ends of such a spatial matrix are respectively cooled and heated. Therefore, the cooling tube 25 passes through the cooling end of the semiconductor heat pump 5, and the cooling tube 25 is wrapped by multiple semiconductor tubes 51, and the heating tube 26 passes through the heating end of the semiconductor heat pump 5, and the heating tube 26 is also wrapped by multiple semiconductor tubes 51.

[0058] like Figure 6As shown, the magnetic suspension motor 1 includes a working fluid compression part 11, a magnetic suspension rotor 13 and a gas compression part 14, the two ends of the magnetic suspension rotor 13 are respectively connected to the working fluid compression part 11 and the gas compression part 14, a coolant inlet pipe 21 and a coolant outlet pipe 22 are arranged on the magnetic suspension motor 1, the coolant inlet pipe 21 and the coolant outlet pipe 22 are respectively arranged at the inlet end and the outlet end of the refrigerant heat pump 2, and a control valve 23 is arranged on the coolant inlet pipe 21 and the coolant outlet pipe 22 at the same time. The cooled coolant passes through the coolant inlet pipe 21 to reach the refrigeration part of the refrigerant heat pump 2, that is, the coolant inlet pipe 21 is connected to the cooling pipe 25, and the coolant The cooling liquid assists the cooling part of the cooling tube 25 to cool down, thereby cooling the compressed air in the ventilation pipe 4 that is half wrapped by the cooling tube 25. Then the cooling liquid after absorbing heat enters the heating part of the refrigerant heat pump 2. The cooling liquid after absorbing heat assists the heating part of the refrigerant heat pump 2 to heat up, that is, the cooling liquid after absorbing heat enters the heating tube 26 from the cooling tube 25. The cooling liquid absorbs heat in the heating tube 26 to achieve heat transfer, and the temperature of the cooling liquid is cooled again. Here, the compressed air in the ventilation pipe 4 absorbs heat and heats up. Then the cooling liquid flows back to the liquid tank 12 through the cooling liquid outlet pipe 22. Under the action of the working fluid compression part 11, the cooling liquid in the liquid tank 12 is constantly circulating.

[0059] After the coolant cools down the compressed air, the coolant absorbs heat and its temperature rises. Then, after the coolant heats up the compressed air, the coolant releases heat and its temperature drops. In this way, the coolant achieves heat exchange and can maintain a low temperature.

[0060] The magnetic levitation motor 1 is arranged in a shell 20, and a gas tank 19 and a liquid tank 12 are respectively arranged on both sides of the shell 20. The working fluid compression part 11 is arranged in the liquid tank 12, and the gas compression part 14 is arranged in the gas tank 19. A compressed air channel 141 is arranged on the gas compression part 14. The compressed air channel 141 passes through the gas tank 19 to the outside, and the ventilation pipe 4 is connected to the compressed air channel 141.

[0061] A magnetic ring stator 17 is arranged corresponding to the magnetic levitation rotor 13. The magnetic ring stator 17 is arranged around the magnetic levitation rotor 13. The magnetic levitation rotor 13 is sleeved on a first buffer washer 15 and a second buffer washer 16. The first buffer washer 15 and the second buffer washer 16 are both made of a mixture of aerogel and ceramic fiber, and have high impact resistance and buffering effects. When the system fails or there is a sudden power outage, the first buffer washer 15 and the second buffer washer 16 can buffer the impact between the magnetic levitation rotor 13 and the magnetic ring stator 17, thereby improving safety and extending the test life.

[0062] The magnetic ring stator 17 is located between the first buffer washer 15 and the second buffer washer 16. The magnetic ring stator 17 is sleeved with an induction coil 18. The magnetic ring stator 17 and the induction coil 18 can generate multiple annular closed magnetic fields. The magnetic field force acts evenly on the magnetic levitation rotor 13. The magnetic field generated by the magnetic ring stator 17 and the induction coil 18 has a strong anti-interference ability, especially the magnetic field from the outside.

[0063] A convex ring 131 is provided on the magnetic levitation rotor 13, and the number of the convex ring 131 is not limited. If multiple convex rings 131 are provided, the spacing between adjacent convex rings 131 is equal. A groove 171 is provided on the magnetic conductive ring stator 17, and the number of the grooves 171 matches the number of the convex rings 131. The inner diameter of the groove 171 is larger than the outer diameter of the convex ring 131. The convex ring 131 extends into the groove 171. There is a spacing between the magnetic levitation rotor 13 and the magnetic conductive ring stator 17, so there is also a spacing between the convex ring 131 and the wall of the groove 171, so that the rotation trajectory of the convex ring 131 extends into the convex ring 131.

[0064] There is a mutual repulsive force between the protruding ring 131 and the groove 171 to prevent the magnetic suspension rotor 13 from axial movement. Compared with the traditional method of setting sensors in the motor, the present invention can set fewer sensors, thereby reducing the size of the magnetic suspension motor 1.

[0065] like Figure 7 As shown, the combined operation modes of the refrigerant heat pump 2 and the semiconductor heat pump 5 are divided into the following three types:

[0066] Mode 1: The semiconductor heat pump 5 works alone;

[0067] Mode 2: Refrigerant heat pump 2 works alone;

[0068] Mode 3: The refrigerant heat pump 2 and the semiconductor heat pump 5 operate simultaneously.

[0069] The controller controls the operation of the entire system, including the following steps:

[0070] S1: Obtain the ambient temperature, nitrogen production rate and equipment operating status parameters of the air separation system. If the ambient temperature is lower than 10°C, execute step S2; otherwise, execute step S3;

[0071] S2: Start operation mode 1, and then execute S6;

[0072] S3: If the nitrogen production rate is less than or equal to 400m 3 / h, determine whether the semiconductor heat pump 5 is operating normally. If it is normal, execute step S2, otherwise, proceed to step S4; if the nitrogen production rate is greater than 400m 3 / h, execute step S5;

[0073] S4: Start operation mode 2, and then execute S6;

[0074] S5: Start operation mode 3, and then execute S6;

[0075] S6: Determine whether the system has reached the target nitrogen production time. If not, repeat S1; if reached, execute S7;

[0076] S7: End nitrogen production.

[0077] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic levitation motor, comprising a working fluid compression part (11), a magnetic levitation rotor (13) and a gas compression part (14), characterized in that: The two ends of the magnetic suspension rotor (13) are respectively connected to the working fluid compression part (11) and the gas compression part (14); a magnetic conductive ring stator (17) is arranged corresponding to the magnetic suspension rotor (13); the magnetic suspension rotor (13) is sleeved on a first buffer washer (15) and a second buffer washer (16); the magnetic conductive ring stator (17) is located between the first buffer washer (15) and the second buffer washer (16); an induction coil (18) is sleeved on the magnetic conductive ring stator (17); a convex ring (131) is arranged on the magnetic suspension rotor (13); a groove (171) is arranged on the magnetic conductive ring stator (17); the convex ring (131) extends into the groove (171); a liquid bin (12) and a gas bin (19) are also arranged at the two ends of the magnetic suspension rotor (13); the working fluid compression part (11) is arranged in the liquid bin (12); and the gas compression part (14) is arranged in the gas bin (19).

2. A gas separation and collection device, comprising a magnetic levitation motor (1), a refrigerant heat pump (2), a separation membrane (3) and a ventilation pipe (4) according to claim 1, characterized in that: The air supply end of the magnetic levitation motor (1) is connected to the air inlet end of the ventilation pipe (4); the refrigerant heat pump (2) and the separation membrane (3) are both arranged on the ventilation pipe (4); the ventilation pipe (4) passes through the refrigeration part and the heating part of the refrigerant heat pump (2) in sequence; a semiconductor heat pump (5) is coupled to the refrigerant heat pump (2); and a collection tank (6) is arranged at the air outlet end of the ventilation pipe (4).

3. The gas separation and collection device according to claim 2, characterized in that: A filter (7) is provided between the magnetic levitation motor (1) and the refrigerant heat pump (2), and the filter (7) is located on the ventilation duct (4).

4. The gas separation and collection device according to claim 2, characterized in that: A detector (8) is provided on the ventilation pipe (4), and the detector (8) is located between the separation membrane (3) and the collection tank (6).

5. The gas separation and collection device according to claim 2, characterized in that: A coolant inlet pipe (21) and a coolant outlet pipe (22) are provided on the magnetic levitation motor (1); the coolant inlet pipe (21) and the coolant outlet pipe (22) are respectively provided at the inlet end and the outlet end of the refrigerant heat pump (2); and control valves (23) are provided on the coolant inlet pipe (21) and the coolant outlet pipe (22).

6. The gas separation and collection device according to claim 5, characterized in that: The refrigerant heat pump (2) comprises a cooling tube (25) and a heating tube (26); the cooling tube (25) and the heating tube (26) are internally connected; the cooling tube (25) and the cooling tube (25) are both hollow semi-cylinders; the coolant inlet pipe (21) is connected to the cooling tube (25); the coolant outlet pipe (22) is connected to the heating tube (26); a first bracket (9) is arranged in conjunction with the refrigerant heat pump (2); and the refrigerant heat pump (2) is arranged on the first bracket (9).

7. The gas separation and collection device according to claim 2, characterized in that: The semiconductor heat pump (5) comprises a semiconductor tube (51) and a semiconductor connector (52), wherein two ends of the semiconductor connector (52) are respectively connected to two semiconductor tubes (51), and a second bracket (10) is arranged in cooperation with the semiconductor heat pump (5), and the semiconductor heat pump (5) is arranged on the second bracket (10).

8. The gas separation and collection device according to claim 7, characterized in that: Two ends of the semiconductor connector (52) are respectively connected to two semiconductor tubes (51) to form a heat pump unit (53); multiple layers of the heat pump units (53) are arranged in a vertical direction and multiple rows of the heat pump units (53) are arranged in a horizontal direction on the second bracket (10); the distances between adjacent heat pump units (53) are equal; the multiple layers of the heat pump units (53) and the multiple rows of the heat pump units (53) form a spatial matrix.

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