CN114857165A - Floating ring gas dynamic pressure radial bearing - Google Patents
Floating ring gas dynamic pressure radial bearing Download PDFInfo
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- CN114857165A CN114857165A CN202210656180.3A CN202210656180A CN114857165A CN 114857165 A CN114857165 A CN 114857165A CN 202210656180 A CN202210656180 A CN 202210656180A CN 114857165 A CN114857165 A CN 114857165A
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- Prior art keywords
- floating ring
- ring
- bearing
- floating
- foil
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- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
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- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a floating ring gas dynamic pressure radial bearing which comprises a bearing seat, a corrugated foil, a floating ring, a limiting ring and a shaft. The shaft is arranged in the floating ring and can rotate freely, and the shaft and the inner circle surface of the floating ring form a friction pair together. The wave foil is fixed between the bearing seat and the floating ring, and the floating ring is evenly provided with floating ring gaps. The flexible top foil of the conventional gas dynamic pressure bearing is replaced by the rigid floating ring, and the bearing seat, the corrugated foil, the floating ring, the limiting ring and the like form a composite structure. The novel overall structure of the floating ring bearing determines that the floating ring bearing naturally has larger bearing capacity than the flexible top foil bearing, the material and the coating of the floating ring determine the temperature-resistant level, and the gas wave foil bearing with high bearing capacity and high temperature resistance can be developed on the premise of the current technology and the material development level through structural improvement and material adaptation, so that the popularization of the gas dynamic pressure bearing is facilitated.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a floating ring gas dynamic pressure radial bearing.
Background
The turbomachinery has wide application in the industries of energy, aviation, traffic, metallurgy, water treatment, refrigeration, low temperature and the like, the power density and the efficiency of the turbomachinery are obviously increased along with the increase of the rotating speed, the volume and the weight are obviously reduced, and the turbomachinery is promoted to develop towards the direction of high rotating speed. Along with the increase of the rotating speed of the turbo machine, the linear speed of a rotor and the DN value of a bearing are increased, the DN value refers to the product of the inner diameter of the bearing and the rotating speed of the shaft, and if the DN value is too high, the existing rolling bearing and the common sliding bearing are difficult to meet the requirements. In order to solve the problem, a gas foil bearing based on the hydrodynamic principle is provided, which can meet the requirement of higher DN value, and the gas foil bearing takes gas such as air as a lubricating medium, has the advantages of light structure, oil-free lubrication, smooth rotation, long service life and the like compared with the traditional sliding bearing and rolling bearing, but simultaneously has the bearing capacity and system damping of the gas dynamic bearing which are much lower than those of a liquid dynamic bearing due to the characteristic of low gas viscosity, and has the conditions of air film whirling and oscillation.
The radial foil dynamic pressure air bearing with the thick top layer foil structure has the advantages that the thickness of the top foil is increased from 0.1-0.2mm to 0.5-3mm through thickening, the rigidity of the flat foil is greatly increased, gas leakage at the end part is reduced, the problem of top foil depression under heavy load and impact load is solved, the bearing capacity can be improved to a certain extent, but the patent also has some defects, for example, the integrity in the circumferential direction is damaged by a thick top opening, the bearing capacity in the opening direction is greatly reduced due to gas leakage, the temperature resistance of a coating cannot exceed 300 ℃, and the radial foil dynamic pressure air bearing cannot adapt to the application occasions of high-temperature heavy load. Therefore, there is a need to design and develop a floating ring aerodynamic radial bearing to solve the above mentioned problems and better meet the use requirement.
Disclosure of Invention
The invention aims to provide a floating ring gas dynamic pressure radial bearing to solve the problems that the high DN value, the lower bearing capacity and the insufficient temperature resistance level are difficult to meet in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a gaseous dynamic pressure journal bearing of floating ring, includes bearing frame, ripples paper tinsel, floating ring and axle, the axle is fixed in the inside of bearing frame, the floating ring sets up in the outside of axle, just evenly be provided with the floating ring opening on the floating ring, the ripples paper tinsel sets up in the outside of floating ring, install on the bearing frame with ripples paper tinsel and floating ring assorted spacing ring.
Preferably, the edge of bearing frame evenly is provided with the screw thread preformed hole, and convenient to use person assembles the bearing frame.
Preferably, the wave foil is in a wave shape, and the wave foil is in a press forming structure, so that the wave foil is convenient to process.
Preferably, the gaps of the floating ring are arranged on the floating ring at equal angles, so that the performance of the floating ring is improved.
Preferably, both ends of the two sides of the floating ring extend out of the bearing seat for a certain length, the inner diameter of the limiting ring is equal to or slightly larger than that of the bearing seat, and the outer diameter of the main body of the limiting ring is smaller than that of the bearing seat, so that the axial movement of the floating ring and the bump foil can be limited.
Preferably, the shaft is made of high-strength alloy materials, so that the structural strength and rigidity of the shaft are ensured.
Preferably, the shaft neck part of the shaft is provided with a high-hardness high-wear-resistance coating, so that a surface with high hardness, high wear resistance and low friction coefficient can be obtained.
Preferably, the fastening screws or rivets are uniformly arranged between the limiting ring and the bearing seat, so that the assembly of the limiting ring is convenient to realize.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the flexible top foil of the conventional gas dynamic pressure bearing is replaced by the rigid floating ring, and the bearing seat, the corrugated foil, the floating ring, the limiting ring and the like form a composite structure. The novel overall structure of the floating ring bearing determines that the floating ring bearing naturally has larger bearing capacity than the flexible top foil bearing, and the material and the coating of the floating ring determine the temperature-resistant level, and the gas wave foil bearing with high bearing capacity and high temperature resistance is developed on the premise of the current technology and the material development level through structural improvement and material adaptation, so that the popularization of the gas dynamic pressure bearing is facilitated.
(2) The floating ring gas dynamic pressure radial bearing is provided with a floating ring, a bearing seat and a wave foil. During the use, because the floating ring is the whole ring, take place to rotate when opening and stop easily, in order to restrict the axial float of floating ring and ripples paper tinsel simultaneously, consequently need cooperate the floating ring structural design stop gear, spacing ring promptly. The two sides of the floating ring extend out of the bearing seat, the length of the bearing seat is 1/10-1/20 of the outer diameter of the floating ring, the length is generally 2-6mm, 2-6 semicircular floating ring notches are uniformly distributed on the plane of the end part of the floating ring close to the outer diameter, the diameter is 2-6mm, and the depth is consistent with the extending length of the floating ring. The spacing ring can be a whole ring with protrusions, and the shape and the number of the protrusions correspond to the gaps of the floating ring. The limiting ring can also be formed by fastening a plurality of independent limiting blocks and a bearing seat, and the shapes and the number of the limiting blocks correspond to the gaps of the floating ring.
(3) The floating ring and the high-hardness and high-wear-resistance coating are installed on the floating ring gas dynamic pressure radial bearing, so that during specific operation, on one hand, as the top foil structure of the conventional gas foil bearing is innovatively arranged into the rigid floating ring, the circumferential stress is basically not different, the shape distribution of the wave foil does not need to be processed in a radial and axial partition mode to form the situation that different positions correspond to different rigidities like a second generation gas wave foil bearing and a third generation gas wave foil bearing, and the wave foil is directly formed by pressing according to uniform waveforms, and the processing is convenient. And the wave foil is made of conventional materials and heat treatment, such as beryllium bronze and high-temperature nickel-based alloy. On the other hand, the shaft is made of high-strength alloy materials, can be solid and hollow, and can meet the structural strength, and the surface of the shaft is provided with a high-hardness and high-wear-resistance coating, namely, the treatment such as carburizing, nitriding, boriding, seepage and the like or chromium plating, chromium oxide and the like is carried out, so that the shaft neck surface with high hardness, high wear resistance and low friction coefficient can be obtained, and a wear-resistant and wear-reducing friction pair is formed by matching with a floating ring, thereby enhancing the practicability.
Drawings
FIG. 1 is a schematic front view of a partial cross-sectional structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of a three-dimensional half-section structure of the present invention;
FIG. 4 is a schematic diagram of a front view cross-sectional structure of the floating ring according to the present invention;
FIG. 5 is a schematic cross-sectional view of the sidewall of the shaft of the present invention.
In the figure: 1. a fastening screw or rivet; 2. a bearing seat; 3. a bump foil; 4. a floating ring gap; 5. a floating ring; 6. a shaft; 7. a limiting ring; 8. a thread prepared hole; 9. a high-hardness and high-wear-resistant coating; 10. high-strength alloy material.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention is shown: a floating ring gas dynamic pressure radial bearing comprises a bearing seat 2, a corrugated foil 3, a floating ring 5 and a shaft 6, wherein the shaft 6 is fixed inside the bearing seat 2;
the floating ring 5 is arranged outside the shaft 6, and the floating ring 5 is uniformly provided with floating ring gaps 4;
the bump foil 3 is arranged between the floating ring 5 and the bearing seat 2, and the bearing seat 2 is provided with a limit ring 7 matched with the bump foil 3 and the floating ring 5;
thread preformed holes 8 are uniformly formed in the edge of the bearing seat 2; the bearing seat 2 is convenient for a user to assemble by utilizing the thread preformed hole 8;
the wave foil 3 is in a wave shape, and the wave foil 3 is in a press forming structure;
when in use, as the top foil structure of the conventional gas foil bearing is innovatively arranged as the rigid floating ring 5, the circumferential stress is basically not different, so that the shape distribution of the wave foil 3 does not need to be processed in a radial direction and an axial direction in a partition way to form the situation that different positions correspond to different rigidities like a second generation gas wave foil bearing and a third generation gas wave foil bearing, the wave foil 3 is directly pressed and formed according to a uniform waveform, the processing is convenient, and the wave foil 3 still adopts conventional materials and heat treatment modes, such as beryllium bronze and high-temperature nickel-based alloy;
2-6 floating ring gaps 4 are arranged, and the adjacent floating ring gaps 4 are symmetrically distributed about the central line of the floating ring 5;
in use, the material of the floating ring 20 is mainly of the following two types: firstly, a coating treatment is carried out on the surface of metal or ceramic, and the coating comprises modified PTFE and MoS 2 、WS 2 Graphite, chromium plating, chromium oxide, titanium carbide, titanium nitride, titanium aluminum nitride, titanium silicon carbide, diamond-like film DLC, diamond film, etc., composite coating such as CaF 2 /Ag，Ti/Ni、Pb-Ag-Cu-Re，WC-Co-Cu-BaF 2 -CaF 2 And the like. Second, the use of low coefficient of friction materials such as cemented carbide for impregnation of various metals, babbitt metalCarbon graphite of glass and resin, glassy carbon, siliconized graphite, graphite fluoride, silicon carbide and silicon nitride and composites thereof, carbon/carbon composites, carbon/silicon carbide composites, and the like, titanium silicon carbide or composites thereof. Wherein the hard alloy, titanium silicon carbide, silicon nitride and the composite ceramic thereof can resist high temperature over 1000 ℃, the surface can obtain lower friction coefficient after being processed, and the surface can be processed to higher surface finish, so the method can be suitable for the application occasions of 600 plus 800 ℃, a transition coating needs to be made on a metal substrate in consideration of the difference of thermal expansion coefficients, the silver-impregnated carbon graphite has low wear resistance coefficient and can normally work at 900 ℃, therefore, the method can be applied at 600 plus 800 ℃, and certainly, the copper-impregnated carbon graphite, the carbon/carbon composite material and the carbon/silicon carbide composite material can also work at 600 plus 800 ℃ after being subjected to anti-oxidation treatment on the surface;
the two sides of the floating ring 5 extend out of the bearing seat 2 for a certain length, the inner diameter of the limiting ring 7 is equal to or slightly larger than the inner diameter of the bearing seat 2, and the outer diameter of the limiting ring 7 is smaller than the outer diameter of the bearing seat 2;
when the bearing is used, the bearing seat 2 extends out of two sides of the floating ring 5, the length of the bearing seat is 1/10-1/20 of the outer diameter of the floating ring 5, the bearing seat is generally 2-6mm, 2-6 semicircular floating ring notches 4 are uniformly distributed on the plane of the end part of the floating ring 5 close to the outer diameter, the diameter of the floating ring notch is 2-6mm, the depth of the floating ring notch is consistent with the extending length of the floating ring 5, in addition, as the floating ring 5 is a whole ring, the floating ring is easy to rotate during starting and stopping, and meanwhile, in order to limit the axial movement of the floating ring 5 and the corrugated foil 3, a limiting mechanism, namely a limiting ring 7 is required to be designed, the structure of the limiting ring 7 can be a whole ring with protrusions, and can also be a structure formed by uniformly arranging a plurality of independent limiting blocks, so that the limiting structure has high flexibility;
the shaft 6 is made of high-strength alloy material 10;
a high-hardness high-wear-resistance coating 9 is arranged at the shaft neck part of the shaft 6;
when in use, the shaft 6 is made of high-strength alloy materials, can be solid or hollow, and can meet the structural strength, and the surface of the shaft is provided with a high-hardness and high-wear-resistance coating 9, namely, the shaft neck surface with high hardness, high wear resistance and low friction coefficient can be obtained by carrying out carburizing, nitriding, boriding, chromium plating, chromium oxide treatment and the like, and a wear-resistant and wear-reducing friction pair is formed by matching with the floating ring 5;
fastening screws or rivets 1 are uniformly arranged between the limiting ring 7 and the bearing block 2;
when the bearing is used, the limiting ring 7 is fixed on the bearing seat 2 through fastening rivets or screws 1 and is used for limiting the floating ring 5 and the bump foil 3.
When the embodiment of the application is used: the performance of the bearing is optimized through a composite structure formed by the bearing seat 2, the bump foil 3, the floating ring 5, the limiting ring 7 and the like. The new overall structure of the floating ring bearing determines that it naturally has a greater bearing capacity than the flexible top foil bearing, while the material and coating of the floating ring 5 determine the level of temperature resistance, the specific processing scheme is as follows:
firstly, the shaft 6 adopts high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of a shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is silver-impregnated carbon graphite, the corrugated foil 3 is installed in a pre-tightening way, the friction coefficient can be less than 0.15, and the temperature resistance can be more than or equal to 900 ℃.
Secondly, the shaft 6 adopts high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of a shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is soaked in glass carbon graphite and is added with an anti-oxidation coating, the corrugated foil 3 is pre-tightened and installed, the friction coefficient can be less than 0.15, and the temperature resistance can be more than or equal to 900 ℃.
Thirdly, the shaft 6 is made of high-temperature nickel-based alloy, the surface of the shaft neck is firstly processed with a hard alloy transition coating and then is made with a silicon carbide coating, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is made of glassy carbon, the corrugated foil 3 is pre-tightened and installed, the friction coefficient can be less than 0.15, and the temperature resistance can be more than or equal to 700 ℃.
Fourthly, the shaft 6 is made of high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of the shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is made of carbon/silicon carbide composite material, the corrugated foil 3 is installed in a pre-tightening mode, the friction coefficient is less than 0.2, and the temperature resistance can be more than or equal to 900 ℃.
Fifthly, the shaft 6 is made of high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of the shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is made of carbon/carbon composite material, and the SiC coating is made on the inner surface. The corrugated foil 3 is pre-tightened and installed, the friction coefficient is lower than 0.2, and the temperature resistance can be more than or equal to 900 ℃.
Sixthly, the shaft 6 is made of high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of a shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is made of high-temperature nickel-based alloy, and then a titanium nitride silicon coating is made after nitriding, carburizing, boriding and sulfurizing treatment, the friction coefficient is less than 0.3, and the temperature resistance can be more than or equal to 900 ℃.
Seventhly, the shaft 6 is made of high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of a shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, the floating ring 5 is made of heat-resistant stainless steel, and then chromium plating or chromium oxide plating is carried out after nitriding, carburizing, boriding and sulfurizing treatment, the friction coefficient is lower than 0.3, and the temperature resistance can be more than or equal to 900 ℃.
Eighthly, the shaft 6 adopts high-temperature nickel-based alloy, a hard alloy transition coating is firstly processed on the surface of the shaft neck, then a silicon carbide coating is made, the surface is finely ground until Ra is less than or equal to 0.1, and the floating ring is titanium silicon carbide Ti 3 SiC 2 Or a composite thereof. And (5) pre-tightening and mounting the bump foil. The friction coefficient can be lower than 0.2, and the temperature resistance can be more than or equal to 900 ℃.
The processing scheme is selected according to actual requirements, meanwhile, as the top foil structure of the conventional gas foil bearing is innovatively arranged into the rigid floating ring 5, the circumferential stress is basically not different, the shape distribution of the wave foil 3 does not need to be processed in a radial direction and an axial direction in a partition mode to form the situation that different positions correspond to different rigidities like a second generation gas wave foil bearing and a third generation gas wave foil bearing, the wave foil 3 is directly pressed and formed according to a uniform waveform, the processing is convenient, and the wave foil 3 still adopts conventional materials and heat treatment modes, such as beryllium bronze and high-temperature nickel-based alloy.
In addition, because the floating ring is the whole ring, easily take place to rotate when opening and stop, simultaneously in order to restrict the axial float of floating ring and ripples paper tinsel, consequently need cooperate the floating ring structural design stop gear, the spacing ring promptly. The two sides of the floating ring extend out of the bearing seat, the length of the bearing seat is 1/10-1/20 of the outer diameter of the floating ring, the length is generally 2-6mm, 2-6 semicircular floating ring notches are uniformly distributed on the plane of the end part of the floating ring close to the outer diameter, the diameter is 2-6mm, and the depth is consistent with the extending length of the floating ring. The limiting ring can be a whole ring with protrusions, and the shapes and the number of the protrusions correspond to the gaps of the floating ring. The limiting ring can also be formed by fastening a plurality of independent limiting blocks and a bearing seat, and the shapes and the number of the limiting blocks correspond to the gaps of the floating ring.
Claims (8)
1. The utility model provides a float ring gas dynamic pressure journal bearing, its characterized in that, includes bearing frame (2), ripples paper tinsel (3), floats ring (5) and axle (6), axle (6) are located the inside of floating ring (5), and float ring (5) are for having the whole rigid ring structure of certain thickness, just evenly be provided with on floating ring (5) and float ring opening (4), ripples paper tinsel (3) set up between bearing frame (2) and floating ring (5), install on bearing frame (2) with ripples paper tinsel (3) and floating ring (5) assorted spacing ring (7).
2. A floating ring aerodynamic radial bearing according to claim 1, wherein: and thread preformed holes (8) are uniformly formed in the two sides of the bearing seat (2).
3. A floating ring aerodynamic radial bearing according to claim 1, wherein: the wave foil (3) is in a wave shape, and the wave foil (3) is in a press forming structure.
4. A floating ring aerodynamic radial bearing according to claim 1, wherein: the floating ring gaps (4) are arranged on the floating ring (5) at equal angles.
5. A floating ring aerodynamic radial bearing according to claim 1, wherein: two sides of the floating ring (5) extend out of the bearing seat (2) for a certain length and are provided with notches. The inner diameter of the limiting ring (7) main body is equal to or slightly larger than the inner diameter of the bearing seat (2), and the outer diameter of the limiting ring (7) is smaller than the outer diameter of the bearing seat (2).
6. A floating ring aerodynamic radial bearing according to claim 1, wherein: the shaft (6) is made of a high-strength alloy material (10) and is of a solid or hollow structure.
7. A floating ring aerodynamic radial bearing according to claim 1, wherein: and a high-hardness high-wear-resistance coating (9) is arranged at the shaft neck part of the shaft (6).
8. A floating ring aerodynamic radial bearing according to claim 1, wherein: and fastening screws or rivets (1) are uniformly arranged between the limiting ring (7) and the bearing seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210656180.3A CN114857165A (en) | 2022-06-10 | 2022-06-10 | Floating ring gas dynamic pressure radial bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210656180.3A CN114857165A (en) | 2022-06-10 | 2022-06-10 | Floating ring gas dynamic pressure radial bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114857165A true CN114857165A (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210656180.3A Pending CN114857165A (en) | 2022-06-10 | 2022-06-10 | Floating ring gas dynamic pressure radial bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114857165A (en) |
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2022
- 2022-06-10 CN CN202210656180.3A patent/CN114857165A/en active Pending
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