CN113339260A - Magnetic suspension screw type gas compressor - Google Patents

Magnetic suspension screw type gas compressor Download PDF

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Publication number
CN113339260A
CN113339260A CN202110741123.0A CN202110741123A CN113339260A CN 113339260 A CN113339260 A CN 113339260A CN 202110741123 A CN202110741123 A CN 202110741123A CN 113339260 A CN113339260 A CN 113339260A
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CN
China
Prior art keywords
magnetic
ring
rotor
bearing
exhaust end
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Pending
Application number
CN202110741123.0A
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Chinese (zh)
Inventor
余金龙
余凯
常博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Kailong Technology Development Co ltd
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Wuhan Kailong Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN202110741123.0A priority Critical patent/CN113339260A/en
Publication of CN113339260A publication Critical patent/CN113339260A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0064—Magnetic couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0429—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets
    • F16C32/0431—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets with bearings for axial load combined with bearings for radial load

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A magnetic suspension screw type gas compressor is characterized in that: at least, constitute a whole by spare parts such as organism part (1), drive rotor (2), driven rotor (3), magnetic coupling (7), radial permanent magnet bearing (8) and two-way permanent magnetism axial thrust bearing (9), its beneficial effect is: the friction power consumption of the rotary moving part of the compressor is eliminated, oil-free lubrication operation is realized, zero leakage and full adaptability of a compressed medium are realized, and the performance and the reliability of the compressor are greatly improved.

Description

Magnetic suspension screw type gas compressor
Technical Field
The invention relates to a screw type gas compressor in the field of gas compressors, in particular to a magnetic suspension screw type gas compressor.
Background
In the field of gas compressors, screw gas compressors are widely used.
Screw gas compressors utilize a pair of intermeshing drive and driven rotors 2, 3 of specific male and female profile mounted within the housing 102 to produce a periodic volume change upon rotation to effect the suction, compression and discharge of a gaseous medium.
Referring to fig. 1 and 2, the screw gas compressor comprises at least a body 102, a discharge end seat 103, a discharge end cover 104, a suction end seat 108, a suction end cover 109, a shaft seal seat 110, a mechanical seal 6, a drive rotor 2, a drive rotor suction end radial rolling bearing 21, a drive rotor suction end bushing 22, a drive rotor discharge end bushing 23, a drive rotor discharge end radial rolling bearing 24, a drive rotor discharge end gap adjustment ring 25, a drive rotor discharge end axial thrust bearing 26, a drive rotor discharge end bearing cap 27, a drive rotor discharge end belleville spring 28, a drive rotor discharge end lock nut 29, a driven rotor 3, a driven rotor suction end radial rolling bearing 31, a driven rotor suction end bushing 32, a driven rotor discharge end bushing 33, a driven rotor discharge end radial rolling bearing 34, a driven rotor discharge end gap adjustment ring 35, a driven rotor discharge end axial thrust bearing 36, a driven rotor discharge end thrust bearing 36, a rotor discharge end thrust bearing, The bearing gland 37 of the exhaust end of the driven rotor, the belleville spring 38 of the exhaust end of the driven rotor, the locknut 39 of the exhaust end of the driven rotor and other parts.
The mechanical seal 6 is composed of a hard alloy static ring 601, a static ring seal ring 602, a graphite moving ring 603, a moving ring seal ring 604, a spring 605 and a moving ring seat 606, friction power consumption exists between the moving ring and the static ring, and oil injection, lubrication and cooling are needed.
The existing screw type gas compressors are provided with radial rolling bearings and axial thrust bearings, and have friction power consumption and need oil injection, lubrication and cooling. The oil circuit circulating system is complex, and the components and parts are many, if oil separator, oil cooler and circulating oil pump etc. need to set up in the system, have the defect that the filter screen increases the pressure drop.
Disclosure of Invention
In order to overcome the defects of the screw type gas compressor in the prior art, the invention provides a magnetic suspension screw type gas compressor.
The screw gas compressor operates under different working conditions, and the radial force and the axial force to which the driving rotor 2 and the driven rotor 3 are subjected are different in magnitude and direction.
The technical scheme adopted by the invention for solving the technical problems is as follows: at least, constitute a whole by spare parts such as organism part 1, drive rotor 2, driven rotor 3, magnetic coupling 7, radial permanent magnet bearing 8 and two-way permanent magnet axial thrust bearing 9, characterized by:
the connecting body 101, the machine body 102, the exhaust end seat 103, the exhaust end cover 104, the end cover 105 and the silencer 111 are connected into a machine body part through screws;
the driving rotor component is formed by assembling a driving rotor 2, a driving rotor air suction end radial permanent magnetic bearing 201, a driving rotor air suction end shaft sleeve 22, a driving rotor exhaust end shaft sleeve 23, a driving rotor exhaust end radial permanent magnetic bearing 202, a driving rotor exhaust end clearance adjusting ring 203, a driving rotor exhaust end bidirectional permanent magnetic axial thrust bearing 204, a driving rotor exhaust end bearing cover 27, a driving rotor exhaust end belleville spring 28 and a driving rotor exhaust end locking nut 29;
the driven rotor part is formed by assembling a driven rotor 3, a driven rotor air suction end radial permanent magnet bearing 301, a driven rotor air suction end shaft sleeve 32, a driven rotor air discharge end shaft sleeve 33, a driven rotor air discharge end radial permanent magnet bearing 302, a driven rotor air discharge end clearance adjusting ring 303, a driven rotor air discharge end bidirectional permanent magnet axial thrust bearing 304, a driven rotor air discharge end bearing cover 37, a driven rotor air discharge end belleville spring 38 and a driven rotor air discharge end locking nut 39;
the drive coupling 701, the shield case 702, the outer rotor 703, the outer magnetic shoe 704, the inner rotor 705 and the inner magnetic shoe 706 are combined to form a magnetic coupling;
the outer ring body 801, the outer magnetic ring 802, the outer magnetic ring pressing ring 803, the inner ring body 804, the inner magnetic ring 805 and the inner magnetic ring pressing ring 806 form a radial permanent magnet bearing;
the outer ring body 901, the static magnetic ring 902, the outer ring body 903, the inner ring body 904, the thrust magnetic ring 905 and the inner pressure ring body 906 form a bidirectional permanent magnet axial thrust bearing in a combined mode.
The drive rotor 2 is suspended by the magnetic forces of the drive rotor suction end radial permanent magnet bearing 201 and the drive rotor discharge end radial permanent magnet bearing 202.
The driven rotor 3 is levitated by the magnetic forces of the driven rotor suction end radial permanent magnet bearing 301 and the driven rotor discharge end radial permanent magnet bearing 302.
Under the combined action of the bidirectional permanent magnet axial thrust bearing 204 at the exhaust end of the drive rotor, the bearing cover 27 at the exhaust end of the drive rotor, the belleville spring 28 at the exhaust end of the drive rotor and the lock nut 29 at the exhaust end of the drive rotor, the drive rotor 2 realizes the balance of bidirectional axial force.
Under the combined action of the driven rotor exhaust end bidirectional permanent magnet axial thrust bearing 304, the driven rotor exhaust end bearing pressure cover 37, the driven rotor exhaust end belleville spring 38 and the driven rotor exhaust end locking nut 39, the driven rotor 3 realizes the balance of bidirectional axial force.
With the isolation of the shield 702, the screw gas compressor achieves zero leakage of the static seal and full adaptability of the media.
The invention has the beneficial effects that: the friction power consumption of the rotary moving part of the compressor is eliminated, oil-free lubrication operation is realized, the defect that the pressure drop of a filter screen is increased is overcome, zero leakage and full adaptability of media are realized, and the performance and the reliability of the compressor are greatly improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a horizontal cross-sectional view of an example screw gas compressor of the prior art.
Figure 2 is a horizontal cross-sectional view of an example of a rotor component of a prior art screw gas compressor.
Fig. 3 is a horizontal cross-sectional view of one embodiment of a magnetically levitated screw gas compressor of the present invention.
Figure 4 is a horizontal cross-sectional view of one embodiment of the rotor components of a magnetically levitated screw gas compressor of the present invention.
Fig. 5 is an axial cross-sectional view of an embodiment of the magnetic coupling of a magnetically levitated screw gas compressor of the present invention.
Fig. 6 shows an embodiment of the radial permanent magnet bearing of a magnetically levitated screw gas compressor according to the invention.
Fig. 7 is an embodiment of the bidirectional permanent magnetic axial thrust bearing of a magnetically levitated screw gas compressor of the present invention.
Fig. 8 is another embodiment of the radial permanent magnet bearing of a magnetically levitated screw gas compressor of the present invention.
Fig. 9 is another embodiment of the bidirectional permanent magnetic axial thrust bearing of a magnetically levitated screw gas compressor of the present invention.
In the figure: 1. the mechanical seal device comprises a machine body component, 2. a driving rotor, 3. a driven rotor, 6. a mechanical seal, 7. a magnetic coupling, 8. a radial permanent magnet bearing and 9. a bidirectional permanent magnet axial thrust bearing;
21. the driving rotor air suction end radial rolling bearing 22, the driving rotor air suction end shaft sleeve 23, the driving rotor air discharge end shaft sleeve 24, the driving rotor air discharge end radial rolling bearing 25, the driving rotor air discharge end gap adjusting ring 26, the driving rotor air discharge end axial thrust bearing 27, the driving rotor air discharge end bearing gland 28, the driving rotor air discharge end belleville spring 29 and the driving rotor air discharge end locking nut 29;
31. the device comprises a driven rotor air suction end radial rolling bearing, a driven rotor air suction end shaft sleeve, a driven rotor air discharge end radial rolling bearing, a driven rotor air discharge end gap adjusting ring, a driven rotor air discharge end axial thrust bearing, a driven rotor air discharge end bearing cover, a driven rotor air discharge end butterfly spring, a driven rotor air discharge end locking nut, a driven rotor air discharge end shaft sleeve;
101. the air conditioner comprises a connecting body, a body 102, a body 103, an exhaust end seat 104, an exhaust end cover 108, an air suction end seat 109, an air suction end cover 111 and a silencer;
201. the driving rotor air suction end radial permanent magnetic bearing 202, the driving rotor air exhaust end radial permanent magnetic bearing 203, the driving rotor air exhaust end gap adjusting ring 204, the driving rotor air exhaust end bidirectional permanent magnetic axial thrust bearing;
301. the axial thrust bearing comprises a driven rotor air suction end radial permanent magnetic bearing 302, a driven rotor air exhaust end radial permanent magnetic bearing 303, a driven rotor air exhaust end gap adjusting ring 304, a driven rotor air exhaust end bidirectional permanent magnetic axial thrust bearing;
601. the device comprises a hard alloy static ring, 602, a static ring sealing ring, 603, a graphite moving ring, 604, a moving ring sealing ring, 605, a spring, 606 and a moving ring seat;
701. a driving coupling, 702, a shielding cover, 703, an outer rotating body, 704, an outer magnetic shoe, 705, an inner rotating body, 706, an inner magnetic shoe;
801. the outer ring body, 802. the outer magnetic ring, 803. the outer magnetic ring pressing ring, 804. the inner ring body, 805. the inner magnetic ring, 806. the inner magnetic ring pressing ring;
901. the outer ring body, 902. static magnetic ring, 903. outer pressure ring body, 904. inner ring body, 905. thrust magnetic ring, 906. inner pressure ring body;
A. and (5) perforating the spray liquid.
Detailed Description
In the embodiment of a magnetic levitation screw gas compressor shown in fig. 3, 4, 5, 6 and 7, at least the body part 1, the driving rotor 2, the driven rotor 3, the magnetic coupling 7, the radial permanent magnet bearing 8 and the bidirectional permanent magnet axial thrust bearing 9 form a whole.
The connecting body 101, the machine body 102, the exhaust end seat 103, the exhaust end cover 104, the end cover 105 and the silencer 111 are connected into a machine body part through screws;
the driving rotor component is formed by assembling a driving rotor 2, a driving rotor air suction end radial permanent magnetic bearing 201, a driving rotor air suction end shaft sleeve 22, a driving rotor exhaust end shaft sleeve 23, a driving rotor exhaust end radial permanent magnetic bearing 202, a driving rotor exhaust end clearance adjusting ring 203, a driving rotor exhaust end bidirectional permanent magnetic axial thrust bearing 204, a driving rotor exhaust end bearing cover 27, a driving rotor exhaust end belleville spring 28 and a driving rotor exhaust end locking nut 29;
the driven rotor part is formed by assembling a driven rotor 3, a driven rotor air suction end radial permanent magnet bearing 301, a driven rotor air suction end shaft sleeve 32, a driven rotor air discharge end shaft sleeve 33, a driven rotor air discharge end radial permanent magnet bearing 302, a driven rotor air discharge end clearance adjusting ring 303, a driven rotor air discharge end bidirectional permanent magnet axial thrust bearing 304, a driven rotor air discharge end bearing cover 37, a driven rotor air discharge end belleville spring 38 and a driven rotor air discharge end locking nut 39;
the drive coupling 701, the shield case 702, the outer rotor 703, the outer magnetic shoe 704, the inner rotor 705 and the inner magnetic shoe 706 are combined to form a magnetic coupling;
the outer ring body 801, the outer magnetic ring 802, the outer magnetic ring pressing ring 803, the inner ring body 804, the inner magnetic ring 805 and the inner magnetic ring pressing ring 806 form a radial permanent magnet bearing;
the outer ring body 901, the static magnetic ring 902, the outer ring body 903, the inner ring body 904, the thrust magnetic ring 905 and the inner pressure ring body 906 form a bidirectional permanent magnet axial thrust bearing in a combined mode.
The body 102 is characterized in that: the compression cavity of the body 102 is provided with a liquid spraying opening A.
Magnetic coupling 7, characterized by: the driving coupling 701 is connected with the outer rotor 703, the outer magnetic shoe 704 is embedded in the outer rotor 703, the inner rotor 705 is connected with the driving rotor 2, the inner magnetic shoe 706 is embedded in the inner rotor 705, and the outer rotor 703 and the inner rotor 705 are isolated by the shielding case 702 and connected with the connecting body 101; the outer magnetic shoe 704 and the inner magnetic shoe 706 are arranged in even number pairs in the circumferential direction, and are magnetized in the radial direction, and the magnetic lines of force of adjacent magnetic rows are opposite in direction.
Radial permanent magnet bearing 8, characterized by: the outer ring body 801, the outer magnetic ring 802 and the outer magnetic ring pressing ring 803 are combined into a whole, the inner ring body 804, the inner magnetic ring 805 and the inner magnetic ring pressing ring 806 are combined into a whole, and can be separately installed in pairs; the outer magnetic rings 802 and the inner magnetic rings 805 are axially arranged in even number pairs, and are axially magnetized, and the magnetism between the magnetic rings connected with each other is repelled, or is radially magnetized, and the magnetism between the inner magnetic ring and the outer magnetic ring is repelled.
Two-way permanent magnetism axial thrust bearing 9, characterized by: the static magnetic rings 902 are embedded on the outer ring body 901 and the outer ring body 903 respectively, the thrust magnetic ring 905 is embedded between the inner ring body 904 and the inner ring body 906, and the thrust magnetic ring 905 is positioned between the two static magnetic rings 902; the magnetic repulsion between the thrust magnetic ring 905 and the static magnetic ring 902.
The working process of the magnetic suspension screw type gas compressor is as follows:
under the action of an external driving force (such as a motor and a fuel engine), the driving coupling 701 drives the outer rotating body 703 to rotate, and the outer magnetic shoe 704 embedded in the outer rotating body 703 drives the inner magnetic shoe 706 embedded in the inner rotating body 705 through magnetic force, so that the inner rotating body 705 synchronously rotates. In this process, the outer magnetic shoe 704 is not in contact with the inner magnetic shoe 706, and there is no frictional power dissipation.
The inner rotor 705 is connected to the driving rotor 2, and when the inner rotor 705 is driven to rotate, the driving rotor 2 is also driven to rotate synchronously.
The driving rotor 2 and the driven rotor 3 are a pair of screw rotors with specific concave-convex tooth profiles which are meshed with each other and are arranged in a cavity of the machine body 102, and the elementary volumes of the driving rotor 2 and the driven rotor 3 are periodically changed from expansion to reduction along with the rotation of the driving rotor 2, so that the medium gas is subjected to suction, compression and discharge processes in a compressor cavity, and the state of the medium gas is changed: temperature rise, pressure rise and volume reduction.
The liquid medium has the characteristics of large latent heat of vaporization and certain viscosity, and a certain amount of medium liquid is sprayed into the compressor cavity, so that the compression heat can be absorbed, the adiabatic index of the medium is reduced, the compression process tends to an isothermal process, the power consumption is reduced, and simultaneously, the noise can be absorbed in the medium vaporization process. The compression cavity of the body 102 is provided with a liquid spraying opening A for cooling and reducing noise.
The magnetic suspension screw type gas compressor of the invention has the advantages that the screw type gas compressor in the prior art can not achieve: the friction power consumption of the rotary moving part of the compressor is eliminated, oil-free lubrication operation is realized, the defect that the pressure drop is increased by a filter screen is overcome, zero leakage is realized, and the performance and the reliability of the compressor are greatly improved.
The difference between fig. 8 and fig. 6 is: the inner and outer magnetic rings of fig. 8 are radially magnetized and fig. 6 is axially magnetized.
The difference between fig. 9 and fig. 7 is: the thrust magnetic ring of fig. 9 is composed of two identical magnetic rings which repel each other, and fig. 7 is a magnetic ring. In both fig. 9 and fig. 7, the magnetic force between the thrust magnetic ring and the static magnetic ring is repulsive.

Claims (5)

1. The utility model provides a magnetic suspension screw gas compressor, constitutes a whole, characterized by spare parts such as organism part (1), drive rotor (2), driven rotor (3), magnetic coupling (7), radial permanent magnet bearing (8) and two-way permanent magnet axial thrust bearing (9) at least:
the connecting body (101), the machine body (102), the exhaust end seat (103), the exhaust end cover (104), the end cover (105) and the silencer (111) are connected into a machine body component through screws;
the driving rotor component is formed by assembling a driving rotor (2), a driving rotor air suction end radial permanent magnetic bearing (201), a driving rotor air suction end shaft sleeve (22), a driving rotor exhaust end shaft sleeve (23), a driving rotor exhaust end radial permanent magnetic bearing (202), a driving rotor exhaust end clearance adjusting ring (203), a driving rotor exhaust end bidirectional permanent magnetic axial thrust bearing (204), a driving rotor exhaust end bearing cover (27), a driving rotor exhaust end belleville spring (28) and a driving rotor exhaust end locking nut (29);
the driven rotor component is formed by assembling a driven rotor (3), a driven rotor air suction end radial permanent magnetic bearing (301), a driven rotor air suction end shaft sleeve (32), a driven rotor exhaust end shaft sleeve (33), a driven rotor exhaust end radial permanent magnetic bearing (302), a driven rotor exhaust end clearance adjusting ring (303), a driven rotor exhaust end bidirectional permanent magnetic axial thrust bearing (304), a driven rotor exhaust end bearing cover (37), a driven rotor exhaust end belleville spring (38) and a driven rotor exhaust end locking nut (39);
the magnetic coupling is formed by combining a driving coupling (701), a shielding cover (702), an outer rotating body (703), outer magnetic tiles (704), an inner rotating body (705) and inner magnetic tiles (706);
the outer ring body (801), the outer magnetic ring (802), the outer magnetic ring pressing ring (803), the inner ring body (804), the inner magnetic ring (805) and the inner magnetic ring pressing ring (806) are combined to form a radial permanent magnet bearing;
the outer ring body (901), the static magnetic ring (902), the outer ring body (903), the inner ring body (904), the thrust magnetic ring (905) and the inner pressure ring body (906) are combined to form the bidirectional permanent magnet axial thrust bearing.
2. A machine body (102) of a magnetically levitated screw gas compressor as set forth in claim 1, characterized in that: a liquid spraying opening (A) is formed in the compression cavity of the machine body (102).
3. Magnetic coupling (7) for a magnetically levitated screw gas compressor according to claim 1, characterized in that: the driving coupling (701) is connected with the outer rotating body (703), the outer magnetic shoe (704) is embedded in the outer rotating body (703), the inner rotating body (705) is connected with the driving rotor (2), the inner magnetic shoe (706) is embedded in the inner rotating body (705), and the outer rotating body (703) and the inner rotating body (705) are isolated by the shielding cover (702) and connected with the connecting body (101); the outer magnetic shoe (704) and the inner magnetic shoe (706) are arranged in even number pairs in the circumferential direction, and are magnetized in the radial direction, and the magnetic lines of force of adjacent magnetic rows are opposite in direction.
4. Radial permanent magnet bearing (8) of a magnetically levitated screw gas compressor according to claim 1, characterized in that: the outer ring body (801), the outer magnetic ring (802) and the outer magnetic ring pressing ring (803) are combined into a whole, and the inner ring body (804), the inner magnetic ring (805) and the inner magnetic ring pressing ring (806) are combined into a whole and can be separately installed in pairs; the outer magnetic rings (802) and the inner magnetic rings (805) are axially arranged in even number pairs, and are axially magnetized, the magnetism between the magnetic rings connected with each other is repelled, or the magnetism between the inner magnetic ring and the outer magnetic ring is repelled radially.
5. The bidirectional permanent magnet axial thrust bearing (9) of a magnetically levitated screw gas compressor as claimed in claim 1, characterized in that: the static magnetic rings (902) are embedded on the outer ring body (901) and the outer ring body (903) respectively, the thrust magnetic ring (905) is embedded between the inner ring body (904) and the inner ring body (906), and the thrust magnetic ring (905) is positioned between the two static magnetic rings (902); the magnetism between the thrust magnetic ring (905) and the static magnetic ring (902) is repulsive.
CN202110741123.0A 2021-07-01 2021-07-01 Magnetic suspension screw type gas compressor Pending CN113339260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110741123.0A CN113339260A (en) 2021-07-01 2021-07-01 Magnetic suspension screw type gas compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110741123.0A CN113339260A (en) 2021-07-01 2021-07-01 Magnetic suspension screw type gas compressor

Publications (1)

Publication Number Publication Date
CN113339260A true CN113339260A (en) 2021-09-03

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ID=77481976

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110741123.0A Pending CN113339260A (en) 2021-07-01 2021-07-01 Magnetic suspension screw type gas compressor

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101294567A (en) * 2007-04-29 2008-10-29 崔炳如 Totally enclosed double screws type ammonia refrigerating compressor
CN101581303A (en) * 2009-06-15 2009-11-18 大连冷冻机股份有限公司 Screw type refrigerating compressor for ship
CN203130509U (en) * 2012-04-17 2013-08-14 上海格什特螺杆科技有限公司 Disk spring structure of host of screw air compressor
CN203146332U (en) * 2013-02-05 2013-08-21 武汉凯龙技术开发有限责任公司 Shielding screw rod type refrigeration compressor
CN103711696A (en) * 2013-12-29 2014-04-09 大连亿莱森玛机电有限公司 Magnetic transmission screw refrigerating compressor
CN203702863U (en) * 2014-01-02 2014-07-09 上海大学 Permanent magnet suspension bearing with radial repulsive force
CN204572785U (en) * 2015-04-30 2015-08-19 南京艾凌节能技术有限公司 A kind of composite structure of permanent magnetism magnetic suspension bearing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101294567A (en) * 2007-04-29 2008-10-29 崔炳如 Totally enclosed double screws type ammonia refrigerating compressor
CN101581303A (en) * 2009-06-15 2009-11-18 大连冷冻机股份有限公司 Screw type refrigerating compressor for ship
CN203130509U (en) * 2012-04-17 2013-08-14 上海格什特螺杆科技有限公司 Disk spring structure of host of screw air compressor
CN203146332U (en) * 2013-02-05 2013-08-21 武汉凯龙技术开发有限责任公司 Shielding screw rod type refrigeration compressor
CN103711696A (en) * 2013-12-29 2014-04-09 大连亿莱森玛机电有限公司 Magnetic transmission screw refrigerating compressor
CN203702863U (en) * 2014-01-02 2014-07-09 上海大学 Permanent magnet suspension bearing with radial repulsive force
CN204572785U (en) * 2015-04-30 2015-08-19 南京艾凌节能技术有限公司 A kind of composite structure of permanent magnetism magnetic suspension bearing

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