Multi-stage series gas compressor

Abstract

The invention discloses a multi-stage series gas compressor, and belongs to the technical field of compressors. A multi-stage series gas compressor comprises a base, a mounting plate is fixedly mounted on the base, and the multi-stage series gas compressor further comprises multiple sets of first-stage centrifugal compression pumps, multiple sets of second-stage centrifugal compression pumps, multiple sets of first-stage centrifugal compression pumps, multiple sets of second-stage centrifugal compression pumps and multiple sets of second-stage centrifugal compression pumps, the multiple sets of first-stage centrifugal compression pumps surround the periphery of the second-stage resistance compression pump; magnetic suspension and electromagnetic driving technologies are adopted, so that operation of the first-stage centrifugal compression pump and the third-stage centrifugal compression pump is more efficient, mechanical friction and energy loss are reduced, vibration and noise generated in the operation process of the pumps are greatly reduced due to the adoption of the magnetic suspension design, and the service life of the pumps is prolonged. And a quieter and more stable working environment is provided, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a multi-stage series gas compressor. Background Art

[0002] Tandem compressors are designed to continuously compress gas by arranging and connecting multiple compressors in sequence so that they work together. This design can significantly improve the overall efficiency and stability of the compression system.

[0003] At present, most tandem compressors are connected in series with piston compressors. When working, the piston compressor will heat up rapidly due to the reciprocating friction between the piston and the cylinder and the heat generated by gas compression. The high temperature environment will affect the operating efficiency of the compressor, and the compressor will need to consume more energy to overcome the increased resistance due to the temperature increase. High temperature will cause the thermal stress of the internal components of the compressor to increase, accelerate the aging and wear of the materials, and shorten the service life of the equipment. For this reason, a multi-stage tandem gas compressor is proposed herein. Summary of the invention

[0004] The present invention proposes a multi-stage series gas compressor in order to solve the problem that the temperature of the multi-stage series compressor in the prior art is easily increased.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multi-stage series gas compressor comprises a base, on which a mounting plate is fixedly mounted, and further comprises: a first-stage centrifugal compression pump, fixedly mounted on the mounting plate and used to extract gas for primary compression, and the first-stage centrifugal compression pump is provided in multiple groups; a second-stage resistance compression pump, wherein multiple groups of the first-stage centrifugal compression pumps surround the second-stage resistance compression pump, and the gas compressed by the first-stage centrifugal compression pump is discharged into the second-stage resistance compression pump for secondary compression; a third-stage centrifugal compression pump, fixedly mounted on the second-stage resistance compression pump, and compressing the gas discharged from the second-stage resistance compression pump.

[0007] As a preferred embodiment of the present invention: the first-stage centrifugal compression pump includes: a first mounting shell, fixedly mounted on the mounting plate, and a first fixed magnet and a second fixed magnet are respectively fixedly mounted on the inner walls at both ends of the first mounting shell; two groups of third fixed magnets are provided, both of which are fixedly mounted on the inner wall of the first mounting shell and are arranged at both ends of the first mounting shell; a first gas transmission part is suspended in the first mounting shell by magnetic force; a first gas compression part is arranged in the first mounting shell, and the first gas transmission part drives the gas to flow through the first gas compression part for compression; a first cooling part is arranged on the first gas compression part, and is used to absorb the heat of the gas passing through the first gas compression part.

[0008] As a preferred embodiment of the present invention: the first gas transmission part includes a first mounting shaft, and also includes: a second suspension magnet and a third suspension magnet respectively fixedly mounted at both ends of the first mounting shaft, the second suspension magnet repels the first fixed magnet, and the third suspension magnet repels the second fixed magnet; the first suspension magnet is provided in two groups, distributed at both ends of the first mounting shaft, the two groups of the first suspension magnets are respectively arranged on the inner sides of the two groups of the third fixed magnets, and the outer ring of the first suspension magnet repels the inner ring of the third fixed magnet; the first turbine is provided in two groups, the two groups of the first turbines are symmetrically fixedly mounted on the first mounting shaft, and the two groups of the first turbines rotate to drive the airflow to move toward the middle of the first mounting shell; the first stator is fixedly mounted in the first mounting shell, and the first rotor is fixedly mounted on the first mounting shaft, and the first rotor is arranged on the inner side of the first stator.

[0009] As a preferred embodiment of the present invention: the first gas compression part includes: a first mounting cover fixedly mounted on the inner side of the first mounting shell, the first mounting cover is provided with two groups, and the two groups of the first turbines are respectively arranged in the two groups of first mounting covers, and the first mounting cover is fixedly mounted with a first air pipe extending to the outer wall of the first mounting shell; a first mounting pipe, both ends of which are respectively fixedly connected to the two groups of the first mounting covers; two groups of first guide plates are provided, and the two groups of the first guide plates are fixedly connected through a first sleeve, a first spiral guide vane is fixedly mounted on the first sleeve, and the first spiral guide vane is fixedly connected to the first mounting pipe; a first compression air duct is provided between the first mounting tube and the first sleeve, and the gap between the first guide plate and the first mounting cover is connected to the first compression air duct.

[0010] As a preferred embodiment of the present invention: a first semiconductor refrigeration plate is fixedly mounted on the outer wall of the first mounting tube, a refrigeration end of the first semiconductor refrigeration plate is in contact with the first mounting tube, and the first mounting tube and the first spiral guide vane are both made of heat-conducting materials.

[0011] As a preferred embodiment of the present invention: the two-stage resistance compression pump includes: an installation box, a second air pipe is fixedly installed on the installation box, the second air pipe is fixedly installed with the first installation shell, and the second air pipe is connected with the first compression air duct; a speed increaser, fixedly installed on the installation box, the input shaft of the speed increaser extends to the installation box where an impeller is fixedly installed, a DC generator is fixedly installed on the side wall of the speed increaser, the output shaft of the speed increaser is fixedly connected to the rotor of the DC generator, and the generating end of the DC generator is connected to a fixed magnet; a third air pipe is fixedly installed on the side wall of the installation box, and the exhaust end of the third air pipe extends into the second installation shell.

[0012] As a preferred embodiment of the present invention: the three-stage centrifugal compression pump includes: a second mounting shell, fixedly mounted on the mounting box, and a fourth fixed magnet and a fifth fixed magnet are respectively fixedly mounted on the inner walls at both ends of the second mounting shell; two groups of sixth fixed magnets are provided, both of which are fixedly mounted on the inner wall of the second mounting shell and are arranged at both ends of the second mounting shell; a second gas transmission part is suspended in the second mounting shell by magnetic force; a second gas compression part is arranged in the second mounting shell, and the second gas transmission part drives the gas to flow through the second gas compression part for compression; a second cooling part is arranged on the second gas compression part, and is used to absorb the heat of the gas passing through the second gas compression part.

[0013] As a preferred embodiment of the present invention: the second gas transmission part includes a second mounting shaft, and also includes: a fourth suspension magnet and a fifth suspension magnet respectively fixedly mounted at both ends of the second mounting shaft, the fourth suspension magnet repels the fourth fixed magnet, and the fifth suspension magnet repels the fifth fixed magnet; a sixth suspension magnet is provided in two groups, distributed at both ends of the second mounting shaft, the two groups of sixth suspension magnets are respectively arranged on the inner sides of the two groups of sixth fixed magnets, and the outer ring of the sixth suspension magnet repels the inner ring of the sixth fixed magnet; a second turbine, fixedly mounted on the second mounting shaft; a second stator fixedly mounted in the second mounting shell, a second rotor fixedly mounted on the second mounting shaft, and the second rotor is arranged on the inner side of the second stator.

[0014] As a preferred embodiment of the present invention: the second gas compression part includes: a second mounting cover fixedly mounted on the inner side of the second mounting shell, the second turbine is arranged in the second mounting cover; a second mounting pipe, fixedly connected to the second mounting cover; a second guide plate, a second sleeve is fixedly mounted on the second guide plate, a second spiral guide vane is fixedly mounted on the second sleeve, and the second spiral guide vane is fixedly connected to the second mounting pipe; a second compression air duct is arranged between the second mounting pipe and the second sleeve, and a gap between the second guide plate and the second mounting cover is connected to the second compression air duct; an exhaust pipe is fixedly mounted on the second mounting shell, and a pressure control valve is arranged on the exhaust pipe.

[0015] As a preferred embodiment of the present invention: a second semiconductor refrigeration plate is fixedly mounted on the outer wall of the second mounting tube, a cooling end of the second semiconductor refrigeration plate is in contact with the second mounting tube, and the second mounting tube and the second spiral guide vane are both made of heat-conducting materials.

[0016] Compared with the prior art, the present invention provides a multi-stage series gas compressor, which has the following beneficial effects:

[0017] 1. The multi-stage series gas compressor adopts magnetic suspension and electromagnetic drive technology, which makes the operation of the first-stage centrifugal compression pump and the third-stage centrifugal compression pump more efficient, reduces mechanical friction and energy loss, and because of the magnetic suspension design, the vibration and noise generated by the pump during operation are greatly reduced, providing a quieter and more stable working environment;

[0018] 2. The multi-stage series gas compressor absorbs and discharges the heat generated during the compression process in a timely manner through the built-in semiconductor refrigeration sheet, which effectively reduces the temperature of the compressed gas, improves the compression efficiency and the service life of the pump. In addition, the temperature of the compressed gas is reduced. At a lower temperature, the molecular movement of the gas slows down and the interaction between molecules is weakened, which makes the gas easier to compress and facilitates the subsequent compression of the gas, further improving the compression effect of the gas;

[0019] 3. The multi-stage series gas compressor drives the impeller to rotate through gas, thereby driving the DC generator to generate electricity to increase the current on the fixed magnet, thereby improving the magnetism of the fixed magnet, thereby improving the stability of the mounting shaft and the rotation of the turbine. At the same time, the torque required for the rotation of the DC generator and the speed increaser provides resistance to the rotation of the impeller. In conjunction with a first-stage centrifugal compression pump, the gas pressure can be further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a multi-stage series gas compressor proposed by the present invention;

[0021] Figure 2 This is a front view of a multi-stage series gas compressor proposed by the present invention;

[0022] Figure 3 A cross-sectional view of a first mounting shell of a multi-stage series gas compressor proposed by the present invention;

[0023] Figure 4 A multi-stage series gas compressor proposed by the present invention Figure 3 The structural diagram of part A in the figure;

[0024] Figure 5 A cross-sectional view of a multi-stage series gas compressor installation box proposed by the present invention;

[0025] Figure 6 A multi-stage series gas compressor proposed by the present invention Figure 5 The structural diagram of part B;

[0026] Figure 7 A multi-stage series gas compressor proposed by the present invention Figure 6 Schematic diagram of the structure of part C;

[0027] Figure 8 This is a schematic diagram of the structure of a multi-stage series gas compressor impeller proposed by the present invention;

[0028] Fig. 9 This is a schematic diagram of the structure of the first turbine of a multi-stage series gas compressor proposed by the present invention;

[0029] Fig.10 This is a cross-sectional view of a first mounting pipe of a multi-stage series gas compressor proposed by the present invention.

[0030] In the figure: 1, base; 2, mounting plate; 3, first-stage centrifugal compression pump; 4, second-stage resistance compression pump; 5, third-stage centrifugal compression pump; 6, first mounting shell; 7, first fixed magnet; 8, second fixed magnet; 9, third fixed magnet; 10, first mounting shaft; 11, first mounting cover; 12, first turbine; 13, first suspension magnet; 14, first air pipe; 15, first mounting pipe; 16, first guide plate; 17, first compression airway; 18, first spiral guide vane; 19, second spiral guide vane; 20, first semiconductor refrigeration plate; 21, second compression airway; 22, second suspension magnet; 23, first stator; 24, third suspension magnet Iron; 25, the first rotor; 26, the mounting box; 27, the second air pipe; 28, the speed increaser; 29, the impeller; 30, the DC generator; 31, the second mounting shell; 32, the third air pipe; 33, the fourth fixed magnet; 34, the fifth fixed magnet; 35, the second mounting shaft; 36, the fourth floating magnet; 37, the fifth floating magnet; 38, the sixth floating magnet; 39, the sixth fixed magnet; 40, the second rotor; 41, the second stator; 42, the second mounting cover; 43, the second turbine; 44, the second guide plate; 45, the second mounting pipe; 46, the second semiconductor refrigeration plate; 47, the first sleeve; 48, the second sleeve; 49, the exhaust pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position 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 a limitation on the present invention.

[0033] Example: Refer to Figure 1-Figure 10A multi-stage series gas compressor comprises a base 1, on which a mounting plate 2 is fixedly mounted, and further comprises: a first-stage centrifugal compression pump 3, fixedly mounted on the mounting plate 2, for extracting gas for primary compression, and a plurality of first-stage centrifugal compression pumps 3 are provided; a second-stage resistance compression pump 4, wherein a plurality of first-stage centrifugal compression pumps 3 surround the second-stage resistance compression pump 4, and the gas compressed by the first-stage centrifugal compression pump 3 is discharged into the second-stage resistance compression pump 4 for secondary compression; a third-stage centrifugal compression pump 5, fixedly mounted on the second-stage resistance compression pump 4, and compresses the gas discharged from the second-stage resistance compression pump 4.

[0034] In this embodiment, external air is first drawn in through multiple groups of first-stage centrifugal compression pumps 3 and then compressed for the first time. After the first compression, the air is uniformly discharged into the second-stage resistance compression pump 4. The second-stage resistance compression pump 4 provides resistance, and the moving airflow encounters resistance inside the chamber sealed on all sides and the pressure is further increased under the subsequent storage and supply of airflow, thereby realizing secondary compression of the gas. The airflow with the second increased pressure enters the third-stage centrifugal compression pump 5, where it is discharged after centrifugal compression, thereby realizing the third compression of the gas. A pressure regulating valve is provided at the exhaust end of the third-stage centrifugal compression pump 5, and the pressure of the exhaust gas can be adjusted by adjusting the pressure of the pressure regulating valve, and the fourth compression of the gas can be realized by cooperating with the third-stage centrifugal compression pump 5. Through the combination of compression pumps at different stages, multi-stage compression of the gas is effectively realized, and the compression efficiency and the final pressure of the gas are improved.

[0035] Reference Figure 1-Figure 4 and Fig. 9 , Fig.10The first-stage centrifugal compression pump 3 includes: a first mounting shell 6, which is fixedly mounted on the mounting plate 2, and a first fixed magnet 7 and a second fixed magnet 8 are fixedly mounted on the inner walls at both ends of the first mounting shell 6 respectively; two groups of third fixed magnets 9 are provided, both of which are fixedly mounted on the inner wall of the first mounting shell 6 and are arranged at both ends of the first mounting shell 6; a first gas transmission part, which is suspended in the first mounting shell 6 by magnetic force; a first gas compression part, which is arranged in the first mounting shell 6, and the first gas transmission part drives the gas to flow through the first gas compression part for compression; a first cooling part, which is arranged on the first gas compression part, and is used to absorb the gas passing through the first gas compression part The first gas transmission part includes a first mounting shaft 10, and also includes: a second suspension magnet 22 and a third suspension magnet 24 respectively fixedly mounted at both ends of the first mounting shaft 10, the second suspension magnet 22 repels the first fixed magnet 7, and the third suspension magnet 24 repels the second fixed magnet 8; the first suspension magnet 13 is provided with two groups, distributed at both ends of the first mounting shaft 10, the two groups of first suspension magnets 13 are respectively arranged on the inner sides of the two groups of third fixed magnets 9, and the outer rings of the first suspension magnets 13 repel the inner rings of the third fixed magnets 9; the first turbine 12 is provided with two groups, and the two groups of first turbines 12 are symmetrically fixedly mounted on the first mounting shaft 10 , two groups of first turbines 12 rotate to drive the airflow to move toward the middle of the first mounting shell 6; a first stator 23 fixedly mounted in the first mounting shell 6, a first rotor 25 fixedly mounted on the first mounting shaft 10, and the first rotor 25 is arranged on the inner side of the first stator 23; the first gas compression part includes: a first mounting cover 11 fixedly mounted on the inner side of the first mounting shell 6, the first mounting cover 11 is provided with two groups, and the two groups of first turbines 12 are respectively arranged in the two groups of first mounting covers 11, and the first mounting cover 11 is fixedly mounted with a first air pipe 14 extending to the outer wall of the first mounting shell 6; a first mounting pipe 15, both ends of which are respectively fixed to the two groups of first mounting covers 11 Connection; the first guide plate 16 is provided with two groups, and the two groups of first guide plates 16 are fixedly connected by a first sleeve 47, and a first spiral guide vane 18 is fixedly installed on the first sleeve 47, and the first spiral guide vane 18 is fixedly connected to the first mounting tube 15; a first compressed air duct 17 is provided between the first mounting tube 15 and the first sleeve 47, and a gap between the first guide plate 16 and the first mounting cover 11 is connected to the first compressed air duct 17; a first semiconductor refrigeration sheet 20 is fixedly installed on the outer wall of the first mounting tube 15, and the cooling end of the first semiconductor refrigeration sheet 20 is in contact with the first mounting tube 15, and the first mounting tube 15 and the first spiral guide vane 18 are both made of heat-conducting materials.

[0036] In this embodiment, the specific working process of the first-stage centrifugal compression pump 3 is as follows: before use, the first fixed magnet 7, the second fixed magnet 8 and the third fixed magnet 9 are energized to generate magnetic force (the three groups of fixed magnets are all electromagnets, and the three groups of suspension magnets are all permanent magnets), wherein the two groups of third fixed magnets 9 are both annular, and the third fixed magnet 9 drives the first suspension magnet 13 to float by magnetic force, while the first fixed magnet 7 applies repulsive force to the second suspension magnet 22, and the third fixed magnet 9 applies repulsive force to the third suspension magnet 24. In summary, through the cooperation of multiple groups of fixed magnets (electromagnets) and multiple groups of suspension magnets (permanent magnets), the first mounting shaft 10 is in a suspended state.

[0037] At the same time, the first semiconductor refrigeration sheet 20 starts to absorb the heat of the first mounting tube 15 and the first spiral guide vane 18 , thereby cooling the first spiral guide vane 18 and the first mounting tube 15 .

[0038] When the first installation shaft 10 is suspended in the air and coaxial with the first installation shell 6, the first stator 23 is energized to generate a rotating magnetic field, thereby driving the first rotor 25 to rotate, the first rotor 25 drives the first installation shaft 10 to rotate, and the first installation shaft 10 drives the two sets of first turbines 12 to rotate. When the two sets of first turbines 12 rotate, gas is sucked through the first air pipe 14 and driven to move toward the center of the first installation shell 6. In this process, the airflow passes through the gap between the first installation cover 11 and the first guide plate 16 and enters the first compression airway 17 for compression. The gas is compressed inside the first compression airway 17. When the gas passes through the first compression air duct 17, it contacts the first spiral guide vane 18. The heat generated by the compressed gas is conducted to the first semiconductor refrigeration plate 20 through the first spiral guide vane 18 and the first mounting tube 15, and is discharged through the first semiconductor refrigeration plate 20. The compressed gas after cooling (in this process, the gas undergoes the first compression. For the sake of convenience, the gas that has undergone the first compression is referred to as the first-stage compressed gas. Similarly, the gas that has undergone the second-stage compression is referred to as the second-stage compressed gas). The first-stage compressed gas after cooling is discharged into the second-stage resistance compression pump 4 for secondary compression.

[0039] To sum up, the first-stage centrifugal compression pump 3 adopts magnetic suspension and electromagnetic drive technology, which makes the operation of the pump more efficient and reduces mechanical friction and energy loss. The first mounting shaft 10 and the first turbine 12 are suspended by magnetic force and rotate independently in mid-air without mechanical connection with other components, thereby reducing the wear of the first mounting shaft 10 and the first turbine 12 during rotation and improving the service life of the equipment. In addition, because friction is reduced, the vibration and noise generated by the pump during operation are greatly reduced, providing a quieter and more stable working environment. In addition, the built-in first semiconductor refrigeration sheet 20 cooperates with the first spiral guide vane 18 to promptly absorb and discharge the heat generated during the compression process, effectively reducing the temperature of the compressed gas and improving the compression efficiency and the service life of the pump.

[0040] Reference Figure 1-Figure 4 and Figure 8-Figure 10 The two-stage resistance compression pump 4 includes: a mounting box 26, on which a second air pipe 27 is fixedly mounted, the second air pipe 27 is fixedly mounted to the first mounting shell 6, and the second air pipe 27 is communicated with the first compression air duct 17; a speed increaser 28, which is fixedly mounted on the mounting box 26, the input shaft of the speed increaser 28 extends to the mounting box 26 where an impeller 29 is fixedly mounted, a DC generator 30 is fixedly mounted on the side wall of the speed increaser 28, the output shaft of the speed increaser 28 is fixedly connected to the rotor of the DC generator 30, and the power generation end of the DC generator 30 is connected to the fixed magnet; a third air pipe 32 is fixedly mounted on the side wall of the mounting box 26, and the exhaust end of the third air pipe 32 extends to the second mounting shell 31.

[0041] In this embodiment, the cooled primary compressed gas enters the mounting box 26 through the second air pipe 27, and then rotates through the impeller 29, wherein the impeller 29 includes a mounting wheel and impellers, and a plurality of groups of impellers are circumferentially distributed on the mounting wheel. The side wall of the mounting wheel is provided with sealing rubber, which is sealed with the mounting box 26 and can maintain rotation.

[0042] In addition, multiple groups of blades cooperate with the mounting box 26 and the mounting wheels to divide the mounting box 26 into multiple small chambers, and the positions of the multiple small chambers are constantly changed until a single small chamber is connected to the exhaust hole, and then discharged into the three-stage centrifugal compression pump 5 through the third air pipe 32.

[0043] During use, the cooled first-stage compressed air flows into the small chamber, driving the impeller 29 to rotate. During this process, the impeller 29 drives the input shaft of the speed increaser 28 (equivalent to the reverse use of the speed reducer to increase the output speed) to rotate, and the output shaft of the speed increaser 28 drives the rotor of the DC generator 30 to rotate and generate electricity.

[0044] Among them, the resistance to the rotation of the DC generator 30 and the speed increaser 28 is applied to the impeller 29, thereby reducing the rotation speed of the impeller 29 and increasing the force required to drive the impeller 29 to rotate. When the first-stage compressed airflow after subsequent cooling is continuously transmitted into the installation box 26, as the airflow increases and under the obstruction of the impeller 29, the pressure driving the impeller 29 to rotate increases, and then rotates to the exhaust port for discharge. On the other hand, the DC power generated by the DC generator 30 is transmitted to the fixed magnets (all fixed magnets), increasing the current on the fixed magnets, and improving the magnetism of the fixed magnets, thereby improving the stability of the first installation shaft 10 and the first turbine 12 during rotation.

[0045] That is, the power generation end of the DC generator 30 is connected to the fixed magnet, and the generated DC electricity is transmitted to the fixed magnet to increase its current and magnetism. It not only utilizes the energy of the compressed gas to generate electricity, but also improves the rotation stability of other components (such as the first mounting shaft 10 and the first turbine 12) by enhancing the magnetism of the fixed magnet. At the same time, the rotation resistance of the DC generator 30 and the speed increaser 28 is applied to the impeller 29, which reduces the rotation speed of the impeller 29 and increases the force required to drive it to rotate. Therefore, the impeller 29 can only be driven to rotate continuously when the gas pressure reaches a certain threshold, thereby achieving further compression of the gas.

[0046] Reference Figure 5-Figure 6The three-stage centrifugal compression pump 5 includes: a second mounting shell 31, fixedly mounted on the mounting box 26, and a fourth fixed magnet 33 and a fifth fixed magnet 34 are fixedly mounted on the inner walls at both ends of the second mounting shell 31 respectively; two groups of sixth fixed magnets 39 are provided, both of which are fixedly mounted on the inner wall of the second mounting shell 31 and are arranged at both ends of the second mounting shell 31; a second gas transmission part, suspended in the second mounting shell 31 by magnetic force; a second gas compression part, arranged in the second mounting shell 31, and the second gas transmission part drives the gas to flow through the second gas compression part for compression; a second cooling part, arranged on the second gas compression part, Used to absorb the heat of the gas passing through the second gas compression part; the second gas transmission part includes a second installation shaft 35, and also includes: a fourth suspension magnet 36 and a fifth suspension magnet 37 respectively fixedly installed at both ends of the second installation shaft 35, the fourth suspension magnet 36 repels the fourth fixed magnet 33, and the fifth suspension magnet 37 repels the fifth fixed magnet 34; the sixth suspension magnet 38 is provided in two groups, distributed at both ends of the second installation shaft 35, the two groups of the sixth suspension magnet 38 are respectively arranged on the inner side of the two groups of the sixth fixed magnet 39, and the outer ring of the sixth suspension magnet 38 repels the inner ring of the sixth fixed magnet 39; the second turbine 43, The second gas compression part comprises: a second mounting cover 42 fixedly mounted on the inner side of the second mounting shell 31, a second turbine 43 arranged in the second mounting cover 42; a second mounting pipe 45 fixedly connected to the second mounting cover 42; a second guide plate 44, a second sleeve 48 fixedly mounted on the second guide plate 44, and a second spiral guide vane fixedly mounted on the second sleeve 48; a second gas compression part 43 fixedly mounted on the second mounting shell 31; a second gas compression part 43 fixedly mounted on the second mounting shell 31; a second gas compression part 43 fixedly mounted on the second mounting cover 42 ... 19, the second spiral guide vane 19 is fixedly connected to the second mounting tube 45; a second compressed air duct 21 is arranged between the second mounting tube 45 and the second sleeve 48, and the gap between the second guide plate 44 and the second mounting cover 42 is connected to the second compressed air duct 21; an exhaust pipe 49 is fixedly mounted on the second mounting shell 31, and a pressure control valve is arranged on the exhaust pipe 49; as a preferred embodiment of the present invention: a second semiconductor refrigeration plate 46 is fixedly mounted on the outer wall of the second mounting tube 45, and the cooling end of the second semiconductor refrigeration plate 46 is in contact with the second mounting tube 45, and the second mounting tube 45 and the second spiral guide vane 19 are both made of heat-conducting materials.

[0047] In this embodiment, the specific working process of the three-stage centrifugal compression pump 5 is as follows: before use, the fourth fixed magnet 33, the fifth fixed magnet 34 and the sixth fixed magnet 39 are energized to generate magnetic force (the three groups of fixed magnets are all electromagnets, and the three groups of suspension magnets are all permanent magnets), wherein the two groups of sixth fixed magnets 39 are both annular, and the sixth suspension magnet 38 is floated by the magnetic force driven by the sixth fixed magnet 39, while the fourth fixed magnet 33 applies repulsive force to the fourth suspension magnet 36, and the fifth fixed magnet 34 applies repulsive force to the fifth suspension magnet 37. In summary, through the cooperation of multiple groups of fixed magnets (electromagnets) and multiple groups of suspension magnets (permanent magnets), the second mounting shaft 35 is in a suspended state.

[0048] At the same time, the second semiconductor refrigeration sheet 46 starts to absorb the heat of the second mounting tube 45 and the second spiral guide vane 19 , thereby cooling the second spiral guide vane 19 and the second mounting tube 45 .

[0049] When the second mounting shaft 35 is suspended and coaxial with the second mounting shell 31, the second stator 41 is energized to generate a rotating magnetic field, thereby driving the second rotor 40 to rotate, and the second rotor 40 drives the second mounting shaft 35 to rotate, and the second mounting shaft 35 drives the second turbine 43 to rotate. When the second turbine 43 rotates, the secondary compressed gas in the mounting box 26 is absorbed through the third air pipe 32 and the gas is driven to move toward the end of the second mounting shell 31 away from the mounting box 26. In this process, the airflow enters the second compressed air channel 21 through the gap between the second mounting cover 42 and the second guide plate 44 for compression, and the gas is compressed inside the second compressed air channel 21. When the compressed gas passes through the second compressed air channel 21, it contacts the second spiral guide vane 19, and the heat generated by the compressed gas is conducted to the second semiconductor refrigeration plate 46 through the second spiral guide vane 19 and the second mounting pipe 45, and is discharged through the second semiconductor refrigeration plate 46. The tertiary compressed gas after cooling is discharged through the exhaust pipe 49. In this process, the tertiary compressed gas can be compressed again by the pressure control valve and the tertiary centrifugal compression pump 5.

[0050] To summarize, the three-stage centrifugal compression pump 5 uses the same magnetic suspension and electromagnetic drive technology as the one-stage centrifugal compression pump 3, which makes the operation of the pump more efficient and reduces mechanical friction and energy loss. The second mounting shaft 35 and the second turbine 43 are suspended by magnetic force and rotate independently in mid-air without any mechanical connection with other components, thereby reducing the wear of the second mounting shaft 35 and the second turbine 43 during rotation and improving the service life of the equipment. In addition, because friction is reduced, the vibration and noise generated by the pump during operation are greatly reduced, providing a quieter and more stable working environment. In addition, the built-in second semiconductor refrigeration sheet 46 cooperates with the second spiral guide vane 19 to promptly absorb and discharge the heat generated during the compression process, effectively reducing the temperature of the compressed gas and improving the compression efficiency and the service life of the pump.

[0051] In addition, the electric energy generated by the DC generator 30 is also connected to the three groups of fixed magnets of the three-stage centrifugal compression pump 5, so as to enhance the current of the three groups of fixed magnets and improve the stability of the second mounting shaft 35 and the second turbine 43 during rotation.

[0052] In summary, the multi-stage tandem gas compressor adopts magnetic suspension and electromagnetic drive technology, which makes the operation of the first-stage centrifugal compression pump 3 and the third-stage centrifugal compression pump 5 more efficient, reduces mechanical friction and energy loss, and due to the use of magnetic suspension design, the vibration and noise generated by the pump during operation are greatly reduced, providing a quieter and more stable working environment.

[0053] In addition, through the built-in semiconductor refrigeration plate, the heat generated during the compression process is absorbed and discharged in time, which effectively reduces the temperature of the compressed gas, improves the compression efficiency and the service life of the pump, and the temperature of the compressed gas is reduced. At a lower temperature, the molecular motion of the gas slows down and the interaction between molecules is weakened, which makes the gas easier to be compressed and facilitates the subsequent compression of the gas. In addition, the impeller 29 is driven by gas to rotate, thereby driving the DC generator 30 to generate electricity to increase the current on the fixed magnet, thereby improving the magnetism of the fixed magnet, thereby improving the stability of the installation shaft and the turbine during rotation. At the same time, the torque required for the rotation of the DC generator 30 and the speed increaser 28 provides resistance to the rotation of the impeller 29, and cooperates with the first-stage centrifugal compression pump 3 to further increase the pressure of the gas.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage series gas compressor, comprising a base (1), on which a mounting plate (2) is fixedly mounted, characterized in that: Also includes: A first-stage centrifugal compression pump (3) is fixedly mounted on the mounting plate (2) and is used to extract gas for primary compression, and a plurality of first-stage centrifugal compression pumps (3) are provided; A secondary resistance compression pump (4), wherein a plurality of groups of the primary centrifugal compression pumps (3) surround the secondary resistance compression pump (4), and the gas compressed by the primary centrifugal compression pump (3) is discharged into the secondary resistance compression pump (4) for secondary compression; The three-stage centrifugal compression pump (5) is fixedly mounted on the two-stage resistance compression pump (4) and compresses the gas discharged from the two-stage resistance compression pump (4).

2. A multi-stage series gas compressor according to claim 1, characterized in that: The first-stage centrifugal compression pump (3) comprises: A first mounting shell (6) is fixedly mounted on the mounting plate (2), wherein a first fixed magnet (7) and a second fixed magnet (8) are respectively fixedly mounted on inner walls at both ends of the first mounting shell (6); Two groups of third fixed magnets (9) are provided, both of which are fixedly mounted on the inner wall of the first mounting shell (6) and are arranged at both ends of the first mounting shell (6); a first gas transmission part suspended in the first mounting housing (6) by magnetic force; A first gas compression unit is arranged in the first mounting housing (6), wherein the first gas transmission unit drives the gas to flow through the first gas compression unit for compression; The first cooling part is arranged on the first gas compression part and is used for absorbing the heat of the gas passing through the first gas compression part.

3. A multi-stage series gas compressor according to claim 2, characterized in that: The first gas transmission part includes a first mounting shaft (10), and further includes: A second suspension magnet (22) and a third suspension magnet (24) are respectively fixedly mounted on two ends of the first mounting shaft (10), wherein the second suspension magnet (22) repels the first fixed magnet (7), and the third suspension magnet (24) repels the second fixed magnet (8); Two groups of first suspension magnets (13) are provided and distributed at both ends of the first mounting shaft (10), the two groups of the first suspension magnets (13) are respectively arranged on the inner sides of the two groups of third fixed magnets (9), and the outer ring of the first suspension magnet (13) repels the inner ring of the third fixed magnet (9); The first turbine (12) is provided with two groups, the two groups of the first turbines (12) are symmetrically fixedly mounted on the first mounting shaft (10), and the two groups of the first turbines (12) rotate to drive the airflow to move toward the middle of the first mounting shell (6); the first stator (23) is fixedly mounted in the first mounting shell (6), and the first rotor (25) is fixedly mounted on the first mounting shaft (10), and the first rotor (25) is arranged on the inner side of the first stator (23).

4. A multi-stage series gas compressor according to claim 3, characterized in that: The first gas compression unit comprises: a first mounting cover (11) fixedly mounted on the inner side of the first mounting shell (6), wherein the first mounting cover (11) is provided with two groups, and the two groups of the first turbines (12) are respectively arranged in the two groups of the first mounting covers (11), and a first air pipe (14) extending to the outer wall of the first mounting shell (6) is fixedly mounted on the first mounting cover (11); A first mounting tube (15), both ends of which are respectively fixedly connected to two groups of the first mounting covers (11); Two groups of first guide plates (16) are provided, and the two groups of the first guide plates (16) are fixedly connected via a first sleeve (47), a first spiral guide vane (18) is fixedly mounted on the first sleeve (47), and the first spiral guide vane (18) is fixedly connected to a first mounting tube (15); A first compressed air passage (17) is provided between the first mounting tube (15) and the first sleeve (47), and a gap between the first guide plate (16) and the first mounting cover (11) is communicated with the first compressed air passage (17).

5. A multi-stage series gas compressor according to claim 4, characterized in that: A first semiconductor refrigeration sheet (20) is fixedly mounted on the outer wall of the first mounting tube (15); a refrigeration end of the first semiconductor refrigeration sheet (20) is in contact with the first mounting tube (15); and the first mounting tube (15) and the first spiral guide vane (18) are both made of heat-conducting materials.

6. A multi-stage series gas compressor according to claim 4, characterized in that: The secondary resistance compression pump (4) comprises: An installation box (26), a second air pipe (27) being fixedly mounted on the installation box (26), the second air pipe (27) being fixedly mounted on the first installation shell (6), and the second air pipe (27) being in communication with the first compressed air passage (17); A speed increaser (28) is fixedly mounted on the mounting box (26), the input shaft of the speed increaser (28) extends into the mounting box (26) and is fixedly mounted with an impeller (29), a DC generator (30) is fixedly mounted on the side wall of the speed increaser (28), the output shaft of the speed increaser (28) is fixedly connected to the rotor of the DC generator (30), and the power generation end of the DC generator (30) is connected to a fixed magnet; A third air pipe (32) is fixedly mounted on the side wall of the installation box (26), and an exhaust end of the third air pipe (32) extends into the second installation shell (31).

7. A multi-stage series gas compressor according to claim 6, characterized in that: The three-stage centrifugal compression pump (5) comprises: A second mounting shell (31) is fixedly mounted on the mounting box (26), and a fourth fixed magnet (33) and a fifth fixed magnet (34) are respectively fixedly mounted on inner walls at both ends of the second mounting shell (31); Sixth fixed magnets (39), provided in two groups, both fixedly mounted on the inner wall of the second mounting shell (31), and arranged at both ends of the second mounting shell (31); a second gas transmission part suspended in the second mounting housing (31) by magnetic force; A second gas compression unit is arranged in the second installation shell (31), and the second gas transmission unit drives the gas to flow through the second gas compression unit for compression; The second cooling part is arranged on the second gas compression part and is used for absorbing the heat of the gas passing through the second gas compression part.

8. A multi-stage series gas compressor according to claim 7, characterized in that: The second gas transmission section includes a second mounting shaft (35), and further includes: A fourth suspension magnet (36) and a fifth suspension magnet (37) are respectively fixedly mounted on two ends of the second mounting shaft (35), wherein the fourth suspension magnet (36) repels the fourth fixed magnet (33), and the fifth suspension magnet (37) repels the fifth fixed magnet (34); Two groups of sixth suspension magnets (38) are provided and distributed at both ends of the second mounting shaft (35), the two groups of sixth suspension magnets (38) are respectively provided on the inner sides of the two groups of sixth fixed magnets (39), and the outer ring of the sixth suspension magnet (38) repels the inner ring of the sixth fixed magnet (39); A second turbine (43) fixedly mounted on the second mounting shaft (35); A second stator (41) is fixedly mounted in the second mounting housing (31), a second rotor (40) is fixedly mounted on the second mounting shaft (35), and the second rotor (40) is arranged on the inner side of the second stator (41).

9. A multi-stage series gas compressor according to claim 8, characterized in that: The second gas compression unit comprises: a second mounting cover (42) fixedly mounted on the inner side of the second mounting housing (31), wherein the second turbine (43) is arranged in the second mounting cover (42); and a second mounting pipe (45) fixedly connected to the second mounting cover (42); A second guide plate (44), a second sleeve (48) being fixedly mounted on the second guide plate (44), a second spiral guide vane (19) being fixedly mounted on the second sleeve (48), and the second spiral guide vane (19) being fixedly connected to a second mounting tube (45); A second compressed air passage (21) is provided between the second mounting tube (45) and the second sleeve (48), and a gap between the second guide plate (44) and the second mounting cover (42) is communicated with the second compressed air passage (21); An exhaust pipe (49) is fixedly mounted on the second mounting shell (31), and a pressure control valve is provided on the exhaust pipe (49).

10. A multi-stage series gas compressor according to claim 9, characterized in that: A second semiconductor refrigeration sheet (46) is fixedly mounted on the outer wall of the second mounting tube (45); a refrigeration end of the second semiconductor refrigeration sheet (46) is in contact with the second mounting tube (45); and the second mounting tube (45) and the second spiral guide vane (19) are both made of heat-conducting materials.

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