A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system

Abstract

This invention relates to the field of oxygen compressor technology and discloses a magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system. The compressor includes a compressor housing, with a flange mounting plate fixedly installed on the outer surface of the housing. An oxygen intake port and an oxygen exhaust port are also fixedly installed on the outer surface of the housing. A cooling mechanism is installed on the inner surface of the oxygen exhaust port to cool the oxygen discharged from the exhaust port as needed. This magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system allows the heat exchange plates to fully contact the oxygen and efficiently exchange heat through the heat exchange chamber inside the heat exchange flaps and the heat exchange plates on the side surfaces. By introducing cooling gas from the outside and circulating it within the heat exchange chamber, the heat of the oxygen can be quickly removed. Under different operating conditions, the temperature of the discharged oxygen can be effectively reduced to a suitable range, meeting the stringent oxygen temperature requirements of industries such as chemical and medical applications.

Description

Technical Field

[0001] This invention relates to the field of oxygen compressor technology, specifically to a magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system. Background Technology

[0002] In today's highly developed modern industrial sector, oxygen compressors are undoubtedly a crucial and indispensable gas compression device, widely used in production processes across numerous industries such as chemical, steel, and medical. Among the many types of oxygen compressors, the magnetic levitation centrifugal two-stage oxygen compressor stands out for its superior performance. Its high efficiency allows it to process larger volumes of oxygen per unit time, effectively improving production efficiency and meeting the urgent needs of large-scale industrial production. Its low noise level significantly improves the working environment in factory workshops, reducing the potential harm of noise pollution to the physical and mental health of operators. Furthermore, its smaller vibration amplitude not only reduces the risk of equipment failure caused by vibration but also provides a stable and reliable guarantee for the precise operation of the equipment, ensuring the accuracy and stability of the oxygen compression process. However, despite the significant advantages shown by the magnetic levitation centrifugal two-stage oxygen compressor in many aspects, it has consistently been plagued by a prominent and intractable problem during its long operation: excessively high exhaust temperature. After undergoing a complex compression process inside the compressor, the gas often carries a large amount of heat generated during the compression process when it is discharged from the oxygen exhaust port. This causes the gas temperature to rise sharply, significantly exceeding the normal range. From the perspective of the structural integrity and operational stability of the equipment itself, the high-temperature oxygen is like a raging heat wave, continuously eroding the oxygen exhaust port and the intricate pipeline system closely connected to it. Under the long-term exposure to high temperatures, these components inevitably suffer severe thermal erosion and thermal stress. Due to the long-term exposure to this harsh high-temperature environment, the original strength and toughness of the exhaust pipe material will gradually be lost over time. The pipe wall will gradually become thinner, and the structural strength will decrease significantly. Under the dual attack of high-pressure oxygen inside and external thermal stress, it is very easy to deform, twist, and other abnormalities. It may even cause serious cracking in some weak parts. The occurrence of these damages directly leads to a significant reduction in the service life of the equipment. Equipment that was originally expected to operate stably for a long time has to face frequent maintenance and replacement prematurely.

[0003] Excessively high oxygen temperatures have become a key factor hindering smooth production, affecting product quality and production safety, and are completely unable to meet the stringent requirements of these processes. Taking the oxygen-enriched steelmaking process, which is crucial in the steel industry, as an example, oxygen plays an extremely important role in this process. It directly participates in the complex chemical reactions in the steelmaking furnace. However, this reaction has extremely precise requirements for the temperature of oxygen, which must be strictly limited to a very narrow temperature range. Once the oxygen temperature is too high, various chemical reactions in the steelmaking process will not proceed at the expected rate and direction, thus having a serious negative impact on the quality of the molten steel. Similarly, direct use of high-temperature oxygen may cause severe burns to the extremely vulnerable respiratory tract and other organs of patients, causing a series of complications such as respiratory inflammation and edema, bringing great pain and harm to the patient's health. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system, in order to solve the problem mentioned in the background art that the output oxygen temperature is too high to be used directly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a magnetic levitation centrifugal two-stage oxygen compressor with an oxygen air-cooling system, comprising a compressor housing, a flange mounting plate fixedly disposed on the outer surface of the compressor housing, and an oxygen intake port and an oxygen exhaust port fixedly disposed on the outer surface of the compressor housing, a central shaft disposed inside the compressor housing, a coupling connected to one end of the central shaft, and an impeller fixedly disposed on the outer surface of the central shaft, a guide channel opened on the inner surface of the compressor housing, sealing rings disposed on the inner surface of the compressor housing where the two ends of the central shaft are located, and a magnetic levitation bearing disposed on the inner surface of the compressor housing, and a cooling mechanism disposed on the inner surface of the oxygen exhaust port to cool the oxygen discharged from the oxygen exhaust port in a timely manner;

[0006] The cooling mechanism includes: a heat exchange flap, which is rotatably installed on the inner surface of the oxygen exhaust port, and a heat exchange chamber is formed inside the heat exchange flap. A heat exchange plate is fixedly installed on the side surface of the heat exchange flap. An upper air inlet chamber and a lower air inlet chamber are formed inside the side surface of the oxygen exhaust port, and an upper air inlet and a lower air outlet are fixedly installed on the outer surface of the oxygen exhaust port. A fixed connector is fixedly installed at one end of the upper air inlet chamber and the lower air inlet chamber, and a movable connector is fixedly installed on the outer surface of the heat exchange flap opposite to the two fixed connectors. A flexible hose is connected between the movable connector and the opposite fixed connector.

[0007] Preferably, a spring is connected between the heat exchange flap and the inner surface of the oxygen exhaust port, the heat exchange plates are evenly arranged on the side surface of the heat exchange flap, the heat exchange plates are inclined, and one end of the heat exchange plates is located inside the heat exchange chamber.

[0008] By adopting the above technical solution, the uniform arrangement of heat exchange plates can increase the contact area with oxygen and improve the heat exchange efficiency. The inclined design is conducive to guiding the oxygen flow to better contact and exchange heat with the heat exchange plates.

[0009] Preferably, one end of the upper air inlet is connected to the upper air inlet chamber, one end of the lower air outlet is connected to the lower air inlet chamber, and the two fixed connectors are respectively connected to the upper air inlet chamber and the lower air inlet chamber.

[0010] By adopting the above technical solution, it is ensured that the cooling gas can enter the heat exchange chamber of the heat exchange flap, and the gas after heat exchange is discharged from the lower outlet, forming a complete and orderly cooling gas circulation path, ensuring the stable operation of the cooling mechanism and realizing continuous cooling of oxygen at the oxygen exhaust port.

[0011] Preferably, the side surface of the oxygen exhaust port is provided with a thermal expansion drive mechanism, which controls the working state of the cooling mechanism by monitoring the temperature of the oxygen discharged from the oxygen exhaust port.

[0012] Using the above technical solution, when the exhaust temperature rises, the thermal expansion drive mechanism operates, changing the angle of the heat exchange flaps to increase the cooling intensity, thereby achieving precise temperature control.

[0013] Preferably, the thermal expansion drive mechanism includes a piston cylinder, which is fixedly disposed on the outer surface of the oxygen exhaust port, and a sliding piston rod is fixedly installed inside the piston cylinder. A magnetic push rod is fixedly disposed at one end of the piston rod. A sliding sealing baffle is installed inside the upper air inlet chamber. A connecting ring is fixedly connected between adjacent piston cylinders. An expansion cylinder is fixedly connected to the lower surface of one end of the connecting ring, and the lower end of the expansion cylinder is penetrated by a real-time heat-conducting rod, and the lower end of the real-time heat-conducting rod penetrates the lower inner surface of the oxygen exhaust port.

[0014] Using the above technical solution, the real-time heat-conducting rod can quickly transfer the heat of oxygen at the oxygen exhaust port to the expansion cylinder, causing the medium inside the expansion cylinder to expand thermally, thereby triggering the action of the entire thermal expansion drive mechanism and achieving effective control of the cooling mechanism.

[0015] Preferably, the piston cylinder and the piston rod are connected by sliding friction, and the piston rod and the magnetic push rod are concentrically arranged, with one end of the magnetic push rod in contact with the outer surface of the heat exchange flap.

[0016] By adopting the above technical solution, the sliding friction connection ensures that the piston rod can stably slide linearly inside the piston cylinder, and the magnetic push rod is in contact with the outer surface of the heat exchange flap so that the linear motion of the piston rod can be accurately converted into the rotation of the heat exchange flap.

[0017] Preferably, a spring is connected between the sealing baffle and the inner surface of the upper air intake chamber, and one outer surface of the sealing baffle is in contact with the inner surface of the upper air intake chamber through which the upper air intake port penetrates.

[0018] Using the above technical solution, the function of the spring is to provide pre-tightening force to the sealing baffle, so that it can fit tightly against the inner surface of the upper air inlet chamber that is penetrated by the upper air inlet in the initial state, preventing cooling gas from entering the upper air inlet chamber when cooling is not required or the cooling intensity is low, and ensuring normal exhaust of the equipment.

[0019] Preferably, the connecting ring penetrates the side surface of the piston cylinder and is connected to the piston cylinder, and is also connected to the upper end of the expansion cylinder.

[0020] By adopting the above technical solution, the pressure generated by the temperature change of the medium inside the expansion cylinder is evenly transmitted to each piston cylinder, so that all piston rods move synchronously, ensuring the consistency and coordination of the thermal expansion drive mechanism.

[0021] Preferably, the lower end of the real-time heat-conducting rod is a ring design, and the outer surface of the ring design at the lower end of the real-time heat-conducting rod is provided with columnar protrusions, and the columnar protrusions at the lower end of the real-time heat-conducting rod penetrate the inner surface of the lower end of the oxygen exhaust port.

[0022] By adopting the above technical solution, the columnar protrusions on the lower outer surface of the real-time heat-conducting rod increase the contact area between the real-time heat-conducting rod and the oxygen in the oxygen exhaust port, thereby improving the heat transfer efficiency and enabling the heat of the oxygen to be absorbed and transferred to the heat-conducting oil inside the real-time heat-conducting rod more quickly.

[0023] Preferably, the real-time heat-conducting rod is hollow and filled with heat-conducting oil. The upper end of the real-time heat-conducting rod is located inside the expansion cylinder. A heat exchange rod is fixedly installed at one end of the real-time heat-conducting rod inside the expansion cylinder, and the heat exchange rod is arranged in an umbrella shape at the upper end of the real-time heat-conducting rod.

[0024] By adopting the above technical solution, the hollow design and filling with heat transfer oil utilize the excellent thermal conductivity of the heat transfer oil, which can quickly transfer the heat absorbed by the lower end of the real-time heat transfer rod to the expansion cylinder at the upper end. The heat exchange rod is set in an umbrella shape at the upper end of the real-time heat transfer rod, which further increases the contact area between the heat transfer oil and the medium in the expansion cylinder, accelerates the heat exchange speed, and enables the medium in the expansion cylinder to expand or contract more quickly due to heat changes.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the magnetic levitation centrifugal two-stage oxygen compressor with an oxygen air-cooling system:

[0026] 1. The heat exchange chamber inside the heat exchange flap and the heat exchange plates on the side surface enable the heat exchange plates to fully contact oxygen and exchange heat efficiently. By introducing cooling gas from the outside and circulating it in the heat exchange chamber, the heat of oxygen can be quickly removed. Under different working conditions, the temperature of the discharged oxygen can be effectively reduced to a suitable range, meeting the strict requirements of oxygen temperature in industries such as chemical and medical, and ensuring the stability of production processes and product quality.

[0027] Furthermore, precise automatic temperature control is achieved through the coordinated action of the thermal expansion drive mechanism and the cooling mechanism. When the oxygen temperature at the oxygen exhaust port rises, the real-time heat conduction rod quickly senses it and transfers the heat to the expansion cylinder, causing the medium inside the expansion cylinder to expand and drive the piston rod to move, thereby controlling the angle of the heat exchange flap and the on / off of the cooling gas. This automatic adjustment mechanism based on temperature changes ensures that the oxygen temperature always fluctuates very little within the set range, without the need for frequent manual intervention, which greatly improves the intelligence level and reliability of the equipment operation.

[0028] Furthermore, compared to traditional large-scale cooling equipment or high-energy-consuming cooling methods, the air-cooled system of this invention has a compact structure and low energy consumption. It does not require an additional large refrigeration unit or a large cooling medium circulation system, thus reducing the overall power consumption of the equipment. Moreover, due to the improved operational stability of the equipment and the reduction of failures, it avoids the additional resource consumption and waste emissions caused by frequent equipment maintenance or replacement of parts. At the same time, precise temperature control also helps to improve oxygen utilization efficiency and reduce oxygen loss during compression and transportation. It achieves effective resource utilization and environmental protection from multiple aspects. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram showing the connection between the compressor housing, oxygen intake port, and oxygen exhaust port of the present invention.

[0031] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the compressor housing, coupling, and central shaft connection of the present invention.

[0033] Figure 5 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the compressor housing and the oxygen exhaust port of the present invention;

[0034] Figure 6This is a three-dimensional structural diagram of the cross-sectional view of the expansion cylinder, real-time heat conduction rod, and heat exchange rod connection of the present invention.

[0035] Figure 7 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the oxygen exhaust port and the heat exchange flap of the present invention;

[0036] Figure 8 This is a three-dimensional structural diagram of the cross-sectional view of the piston cylinder, piston rod, and magnetic push rod of the present invention;

[0037] Figure 9 This is a three-dimensional structural diagram of the heat exchange chamber, heat exchange plate, and upper air inlet chamber of the present invention, showing a cross-sectional view.

[0038] Figure 10 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the oxygen exhaust port and the sealing baffle of the present invention.

[0039] In the diagram: 1. Compressor housing; 2. Flange mounting plate; 3. Oxygen intake port; 4. Oxygen exhaust port; 5. Coupling; 6. Central shaft; 7. Impeller; 8. Guide channel; 9. Sealing ring; 10. Magnetic levitation bearing; 11. Heat exchange flap; 12. Heat exchange chamber; 13. Heat exchange plate; 14. Upper intake chamber; 15. Lower intake chamber; 16. Upper intake port; 17. Lower outlet port; 18. Fixed connector; 19. Movable connector; 20. Piston cylinder; 21. Piston rod; 22. Magnetic push rod; 23. Sealing baffle; 24. Connecting ring; 25. Expansion cylinder; 26. Real-time heat conduction rod; 27. Heat exchange rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0041] Please see Figures 1-10 The present invention provides a technical solution: a magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system.

[0042] Example 1: This example discloses a compressor housing 1. A flange mounting plate 2 is fixedly provided on the outer surface of the compressor housing 1, and an oxygen intake port 3 and an oxygen exhaust port 4 are fixedly provided on the outer surface of the compressor housing 1. A central shaft 6 is provided inside the compressor housing 1, and a coupling 5 is connected to one end of the central shaft 6. An impeller 7 is fixedly provided on the outer surface of the central shaft 6. A guide channel 8 is provided on the inner surface of the compressor housing 1. Sealing rings 9 are provided on the inner surface of the compressor housing 1 where the two ends of the central shaft 6 are located. A magnetic levitation bearing 10 is provided on the inner surface of the compressor housing 1. A cooling mechanism is provided on the inner surface of the oxygen exhaust port 4 to cool the oxygen discharged from the oxygen exhaust port 4 in a timely manner.

[0043] The cooling mechanism includes: a heat exchange flap 11, which is rotatably mounted on the inner surface of the oxygen exhaust port 4, and a heat exchange chamber 12 is provided inside the heat exchange flap 11. A heat exchange plate 13 is fixedly provided on the side surface of the heat exchange flap 11. An upper air inlet chamber 14 and a lower air inlet chamber 15 are provided inside the side surface of the oxygen exhaust port 4. An upper air inlet 16 and a lower air outlet 17 are fixedly installed on the outer surface of the oxygen exhaust port 4. A fixed connector 18 is fixedly provided at one end of the upper air inlet chamber 14 and the lower air inlet chamber 15. A movable connector 19 is fixedly provided on the outer surface of the heat exchange flap 11 opposite to the two fixed connectors 18. A hose is connected between the movable connector 19 and the opposite fixed connector 18.

[0044] A spring is connected between the heat exchange flap 11 and the inner surface of the oxygen exhaust port 4. The heat exchange plates 13 are evenly arranged on the side surface of the heat exchange flap 11, and the heat exchange plates 13 are inclined. One end of the heat exchange plates 13 is located inside the heat exchange chamber 12.

[0045] One end of the upper air inlet 16 is connected to the upper air inlet chamber 14, and one end of the lower air outlet 17 is connected to the lower air inlet chamber 15. The two fixed connectors 18 are respectively connected to the upper air inlet chamber 14 and the lower air inlet chamber 15.

[0046] The compressor housing 1 is fixedly installed to the mounting platform via the flange mounting plate 2. During normal use, the power equipment drives the central shaft 6 and impeller 7 inside the compressor housing 1 to rotate via the coupling 5. The central shaft 6 reduces friction with the compressor housing 1 under the action of the magnetic levitation bearing 10. The central shaft 6 is sealed by the sealing ring 9. Air flows through the oxygen intake port 3 and the guide channel 8 to the oxygen exhaust port 4 for discharge. During the process, the air flows through the heat exchange plate 13 on the side surface of the heat exchange flap 11. The heat is conducted by the heat exchange plate 13 to the heat exchange chamber 12. Then, the external air pipe injects cooling air into the upper intake chamber 14 through the upper air inlet 16. The upper air inlet 14 is injected into the upper end of the heat exchange chamber 12 through the fixed connector 18 and the movable connector 19 in sequence. The air carries away the heat in the heat exchange chamber 12 and is transferred to the lower intake chamber 15 through the movable connector 19 and the fixed connector 18 at the lower end of the heat exchange flap 11, and finally discharged through the lower air outlet 17.

[0047] Example 2: Based on Example 1, this example discloses that a thermal expansion drive mechanism is provided on the side surface of the oxygen exhaust port 4, and the working state of the cooling mechanism is controlled by monitoring the temperature of the oxygen discharged from the oxygen exhaust port 4.

[0048] The thermal expansion drive mechanism includes a piston cylinder 20, which is fixedly disposed on the outer surface of the oxygen exhaust port 4. A sliding piston rod 21 is fixedly installed inside the piston cylinder 20, and a magnetic push rod 22 is fixedly disposed at one end of the piston rod 21. A sliding sealing baffle 23 is installed inside the upper air inlet chamber 14. A connecting ring 24 is fixedly connected between adjacent piston cylinders 20. An expansion cylinder 25 is fixedly connected to the lower surface of one end of the connecting ring 24. The lower end of the expansion cylinder 25 is penetrated by a real-time heat conduction rod 26, and the lower end of the real-time heat conduction rod 26 penetrates the lower inner surface of the oxygen exhaust port 4.

[0049] The piston cylinder 20 and the piston rod 21 are connected by sliding friction, and the piston rod 21 and the magnetic push rod 22 are concentrically arranged, and one end of the magnetic push rod 22 is in contact with the outer surface of the heat exchange flap 11.

[0050] A spring is connected between the sealing baffle 23 and the inner surface of the upper air intake chamber 14, and one outer surface of the sealing baffle 23 is in contact with the inner surface of the upper air intake chamber 14 through which the upper air intake port 16 penetrates.

[0051] The connecting ring 24 penetrates the side surface of the piston cylinder 20 and is connected to the piston cylinder 20, and is also connected to the upper end of the expansion cylinder 25.

[0052] The lower end of the real-time heat conduction rod 26 is a ring design, and the outer surface of the ring design at the lower end of the real-time heat conduction rod 26 is provided with columnar protrusions, and the columnar protrusions at the lower end of the real-time heat conduction rod 26 penetrate the inner surface of the lower end of the oxygen exhaust port 4.

[0053] The real-time heat conduction rod 26 is hollow and filled with heat conduction oil. The upper end of the real-time heat conduction rod 26 is located inside the expansion cylinder 25. A heat exchange rod 27 is fixedly installed at one end of the real-time heat conduction rod 26 inside the expansion cylinder 25. The heat exchange rod 27 is arranged in an umbrella shape at the upper end of the real-time heat conduction rod 26.

[0054] As oxygen is discharged through oxygen exhaust port 4, the heat is transferred through the lower end of the real-time heat transfer rod 26 to the heat transfer oil inside the rod 26 as the oxygen temperature rises. The heat is then transferred upwards through the heat transfer oil to the heat exchange rod 27, and then through the heat exchange rod 27 to the temporal part of the expansion cylinder 25. The expansion of the air inside the expansion cylinder 25 increases the pressure inside the connecting ring 24. This pressure is transferred through the piston cylinder 20 to the piston rod 21, pushing the piston rod 21. The piston rod 21 then drives the magnetic push rod. The sliding of the magnetic push rod 22 causes the heat exchange flap 11 to rotate towards the oxygen exhaust port 4, thereby increasing the contact area between the heat exchange plate 13 and the output oxygen. At the same time, as the magnetic push rod 22 slides, the sealing baffle 23 loses the attraction of the magnetic push rod 22 and slides upward under the action of the spring between it and the upper air inlet chamber 14, disengaging from the contact with one end of the upper air inlet 16. At this time, the air pipe connected to one end of the upper air inlet 16 injects into the upper air inlet chamber 14 through the upper air inlet 16, completing the injection of cooling gas and the adjustment of the angle of the heat exchange flap 11.

[0055] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system, comprising a compressor housing (1), wherein a flange mounting plate (2) is fixedly provided on the outer surface of the compressor housing (1), and an oxygen intake port (3) and an oxygen exhaust port (4) are fixedly provided on the outer surface of the compressor housing (1), a central shaft (6) is provided inside the compressor housing (1), and a coupling (5) is connected to one end of the central shaft (6), and an impeller (7) is fixedly provided on the outer surface of the central shaft (6), a guide channel (8) is provided on the inner surface of the compressor housing (1), a sealing ring (9) is provided on the inner surface of the compressor housing (1) where both ends of the central shaft (6) are located, and a magnetically levitated bearing (10) is provided on the inner surface of the compressor housing (1), characterized in that: The inner surface of the oxygen exhaust port (4) is provided with a cooling mechanism to cool the oxygen discharged from the oxygen exhaust port (4) in a timely manner. The cooling mechanism includes: a heat exchange flap (11), which is rotatably installed on the inner surface of the oxygen exhaust port (4), and a heat exchange chamber (12) is provided inside the heat exchange flap (11). A heat exchange plate (13) is fixedly provided on the side surface of the heat exchange flap (11). An upper air inlet chamber (14) and a lower air inlet chamber (15) are provided inside the side surface of the oxygen exhaust port (4). An upper air inlet (16) and a lower air outlet (17) are fixedly installed on the outer surface of the oxygen exhaust port (4). A fixed connector (18) is fixedly provided at one end of the upper air inlet chamber (14) and the lower air inlet chamber (15). A movable connector (19) is fixedly provided on the outer surface of the heat exchange flap (11) opposite to the two fixed connectors (18). A hose is connected between the movable connector (19) and the fixed connector (18). A thermal expansion drive mechanism is provided on the side surface of the oxygen exhaust port (4), and the working state of the cooling mechanism is controlled by monitoring the temperature of the oxygen discharged from the oxygen exhaust port (4). The thermal expansion drive mechanism includes a piston cylinder (20), which is fixedly disposed on the outer surface of the oxygen exhaust port (4), and a sliding piston rod (21) is fixedly installed inside the piston cylinder (20), and a magnetic push rod (22) is fixedly disposed at one end of the piston rod (21). A sliding sealing baffle (23) is installed inside the upper air inlet chamber (14). A connecting ring (24) is fixedly connected between adjacent piston cylinders (20), and an expansion cylinder (25) is fixedly connected to the lower surface of one end of the connecting ring (24). The lower end of the expansion cylinder (25) is penetrated by a real-time heat-conducting rod (26), and the lower end of the real-time heat-conducting rod (26) penetrates the lower inner surface of the oxygen exhaust port (4). One end of the magnetic push rod (22) is in contact with the outer surface of the heat exchange flap (11).

2. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: A spring is connected between the heat exchange flap (11) and the inner surface of the oxygen exhaust port (4). The heat exchange plate (13) is evenly arranged on the side surface of the heat exchange flap (11), and the heat exchange plate (13) is designed to be inclined. One end of the heat exchange plate (13) is located inside the heat exchange chamber (12).

3. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: One end of the upper air inlet (16) is connected to the upper air inlet chamber (14), and one end of the lower air outlet (17) is connected to the lower air inlet chamber (15). The two fixed connectors (18) are respectively connected to the upper air inlet chamber (14) and the lower air inlet chamber (15).

4. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: The piston cylinder (20) and piston rod (21) are connected by sliding friction, and the piston rod (21) and magnetic push rod (22) are concentrically arranged.

5. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: A spring is connected between the sealing baffle (23) and the inner surface of the upper air intake chamber (14), and one outer surface of the sealing baffle (23) is in contact with the inner surface of the upper air intake chamber (14) through which the upper air intake port (16) penetrates.

6. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: The connecting ring (24) penetrates the side surface of the piston cylinder (20) and is connected to the piston cylinder (20), and is also connected to the upper end of the expansion cylinder (25).

7. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: The lower end of the real-time heat-conducting rod (26) is a ring design, and the outer surface of the ring design at the lower end of the real-time heat-conducting rod (26) is provided with columnar protrusions, and the columnar protrusions at the lower end of the real-time heat-conducting rod (26) penetrate the inner surface of the lower end of the oxygen exhaust port (4).

8. A magnetically levitated centrifugal two-stage oxygen compressor with an oxygen air-cooling system according to claim 1, characterized in that: The real-time heat-conducting rod (26) is hollow and filled with heat-conducting oil. The upper end of the real-time heat-conducting rod (26) is located inside the expansion cylinder (25). A heat exchange rod (27) is fixedly installed at one end of the real-time heat-conducting rod (26) inside the expansion cylinder (25), and the heat exchange rod (27) is arranged in an umbrella shape at the upper end of the real-time heat-conducting rod (26).

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