CN113090660B - Flow direction adjustable gas passive bearing - Google Patents
Flow direction adjustable gas passive bearing Download PDFInfo
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- CN113090660B CN113090660B CN202110237662.0A CN202110237662A CN113090660B CN 113090660 B CN113090660 B CN 113090660B CN 202110237662 A CN202110237662 A CN 202110237662A CN 113090660 B CN113090660 B CN 113090660B
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- flow direction
- bearing
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- gas
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
- F16C32/0622—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a gas driven bearing with adjustable flow direction, which comprises a bearing, wherein an air passage and a restrictor are arranged in the bearing to form a passive adjustable device, the passive adjustable device comprises a front end and a tail end connected with the front end, the front end is accommodated in the air passage and is adhered to the inner wall of the air passage through sealing glue, and the tail end is inserted into an air outlet end of the restrictor. The invention has the beneficial effects that: the bearing has good stability and certain bearing capacity, and can ensure the high rigidity effect of the bearing in a wider gas film clearance area and the precision of the gas bearing; the number relation of the throttlers can be flexibly configured according to the requirements of performance and cost, the length of the passive adjusting device and the section shape of the tail end are changed simultaneously, the flow direction change in different forms is realized, and the bearing capacity range required by experiments is achieved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of static pressure gas bearings, in particular to a gas driven bearing with an adjustable flow direction.
[ background of the invention ]
The micro-low gravity simulation platform of the static pressure gas bearing is mainly applied to ground full-physical simulation tests of the spacecraft, and plays a decisive role in guaranteeing the on-orbit efficiency of the spacecraft. With the gradual increase of the volume of the spacecraft, particularly the further increase of the scale of the space station, the ground full-physical simulation of the spacecraft meets higher requirements for the load of the micro-low gravity simulation platform. For this reason, the bearing capacity of the bearing needs to be improved to meet the high load requirement of the micro-low gravity simulation platform.
At present, the high bearing capacity of the bearing is usually improved through high air supply pressure, but because the static pressure bearing is easy to generate vortex when in high air pressure, the bearing is unstable, so the air supply pressure is usually limited within 6 atmospheric pressures, and the bearing capacity improvement of the bearing is greatly limited.
Therefore, a new gas driven bearing with adjustable flow direction is needed to solve the above technical problems.
[ summary of the invention ]
The invention discloses a gas driven bearing with an adjustable flow direction, wherein a passive flow direction adjustable device is arranged in the bearing, and the purpose of reducing vortex is achieved by passively changing the direction of the gas flow of the bearing.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a flow direction adjustable gas passive bearing, includes the bearing, be equipped with air flue, flow controller in the bearing with the passive adjustable device of flow direction, the passive adjustable device of flow direction include the front end and with the end that the front end is connected, the front end hold in the air flue and through sealed sticky the subsides on the inner wall of air flue, the end inserts the end of giving vent to anger of flow controller.
As a preferred improvement of the present invention: the cross-sectional shape of the air passage can be circular, rectangular, rhombic, semicircular or triangular.
As a preferred improvement of the present invention: the restriction may be a small bore restriction or an annulus restriction.
As a preferred improvement of the present invention: and the air outlet end of the small hole throttler is provided with a pressure equalizing cavity.
As a preferred improvement of the present invention: the number of the throttlers can be one or more, and the arrangement mode is not limited.
As a preferred improvement of the present invention: the front end of the flow direction passive adjustable device is provided with a through hole which penetrates through the air passage and the throttler, and the cross section of the through hole can be circular, rectangular, rhombic, semicircular or triangular.
As a preferred improvement of the present invention: the cross section of the tail end of the flow direction passive adjustable device can be in an inverted cone shape, a forward cone shape, a spherical shape or an arc shape.
As a preferred improvement of the invention: the sealing mode of the sealing glue is integral sealing or partial sealing.
As a preferred improvement of the present invention: the cross section of the air outlet end can be circular, rectangular, rhombic, semicircular or triangular.
As a preferred improvement of the present invention: the cross-sectional shape of the pressure equalizing cavity can be circular, rectangular, rhombic, semicircular or triangular.
The gas driven bearing with the adjustable flow direction has the beneficial effects that:
1. the bearing has good stability and certain bearing capacity, and can simultaneously ensure that the bearing realizes a high-rigidity effect in a wider gas film clearance area and ensure the precision of the gas bearing;
2. the number relation of the throttlers can be flexibly configured according to the requirements of performance and cost, the length of the passive adjusting device and the section shape of the tail end are changed, different forms of flow direction change are achieved, and the bearing capacity range required by experiments is achieved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic view of the overall structure of a circular bearing according to embodiment 1 of the present invention;
fig. 2 is a sectional view of a circular bearing according to embodiment 1 of the present invention;
FIG. 3 is a sectional view of a circular bearing according to embodiment 2 of the present invention;
FIG. 4 is a top view of a passively adjustable flow direction device for a bearing according to embodiment 3 of the present invention;
FIG. 5 is a top view of a passive flow direction adjustment device of a bearing according to embodiment 4 of the present invention;
FIG. 6 is a top view of a bearing sealant in accordance with embodiment 7 of the present invention;
FIG. 7 is a top view of a bearing sealant in accordance with embodiment 8 of the present invention;
FIG. 8 is a top plan view of a seal for a bearing in accordance with embodiment 1 of the present invention;
FIG. 9 is a front view of a passively adjustable flow direction device for a bearing according to embodiment 9 of the present invention;
FIG. 10 is a front view of a passively adjustable flow direction device of a bearing according to embodiment 10 of the present invention;
FIG. 11 is a front view of a passively adjustable flow direction device for a bearing according to embodiment 11 of the present invention;
FIG. 12 is a front view of a passively adjustable flow direction device for a bearing according to embodiment 11 of the present invention;
FIG. 13 is a schematic view showing the flow of gas inside a bearing in accordance with embodiment 12 of the present invention;
FIG. 14 is a schematic view showing the flow of gas inside a bearing in accordance with embodiment 5 of the present invention;
FIG. 15 is a top view of a circular bearing according to embodiment 14 of the present invention;
FIG. 16 is a plan view of a square bearing in accordance with embodiment 13 of the present invention;
FIG. 17 is a schematic view of an ideal gas flow in example 15 of the present invention;
FIG. 18 is a schematic illustration of vortex generation in example 16 of the present invention.
[ detailed description ] A
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, the present invention provides a flow direction adjustable gas driven bearing, which includes a bearing (not numbered), wherein an air passage 1 and a restrictor (not numbered) are arranged in the bearing to flow to a passive adjustable device 6, the flow direction passive adjustable device 6 includes a front end 61 and a tail end 62 connected with the front end 61, the front end 61 is accommodated in the air passage 1 and is adhered to an inner wall of the air passage 1 through a sealant 7, the tail end 62 is inserted into an air outlet end 4 of the restrictor, specifically, the cross-sectional shape of the air outlet end 4 may be circular, rectangular, rhombic, semicircular or triangular, and the cross-sectional shapes and sizes of the air outlet passages 4 at various positions in the length direction may not be the same. Through the different types of the flow direction passive adjustable device 6, the change of the gas flow direction is realized, so that the vortex is reduced, the stability of the bearing is improved, the high rigidity effect of the bearing in a wider gas film gap area is realized, and the precision of the bearing is ensured.
The cross-sectional shape of the air duct 1 may be circular, rectangular, diamond-shaped, semicircular or triangular, and the cross-sectional shape and size of each position in the length direction of the air duct 1 may be different.
The throttler can be one or a plurality of throttlers, the arrangement mode is not limited, and the throttler can be a small-hole throttler 2 or an annular throttler 3. If the gas outlet end of the small hole restrictor 2 is the small hole restrictor 2, a pressure equalizing cavity 5 is arranged at the gas outlet end 4 of the small hole restrictor 2; if the annular restrictor 3 is adopted, the air outlet end 4 of the annular restrictor 3 is not provided with a pressure equalizing cavity. Specifically, the cross-sectional shape of the pressure equalizing chamber 5 may be circular, rectangular, rhombic, semicircular or triangular, and the cross-sectional shape and size of each position in the length direction of the pressure equalizing chamber 5 may be inconsistent.
The front end 61 of the flow direction passive adjustable device 6 is provided with a through hole 63 which penetrates through the air passage and the restrictor, and the cross section of the through hole 63 can be circular, rectangular, rhombic, semicircular or triangular. The cross-sectional shape of the end 62 of the flow direction passive adjustable means 6 may be an inverted cone, a forward cone, a sphere or an arc.
The sealing mode of the sealing glue 7 is integral sealing or partial sealing, and the partial sealing mode of the sealing glue 7 can be quartered sealing or hexapetral sealing, but the sealing glue is required to be arranged in equal parts.
Example 2
Referring to fig. 3 specifically, the basic structure of this embodiment 2 is the same as that of embodiment 1, except that the flow restrictor in this embodiment 2 is a toroidal flow restrictor, as shown in fig. 3.
Example 3
Specifically, as shown in fig. 4, the basic structure of the present embodiment 3 is the same as that of the embodiment 1, except that the passive adjustable flow direction device in the present embodiment 3 is a forward tapered end, and one of six circular holes is formed at the upper end of the passive adjustable flow direction device.
Example 4
Specifically, referring to fig. 5, the basic structure of this embodiment 4 is the same as that of embodiment 2, except that the flow direction passive adjustable device in this embodiment 4 is a flow direction passive adjustable device having a regular tapered end and an upper end with no hole.
Example 5
The basic structure of this embodiment 5 is the same as that of embodiment 1, except that the flow direction passive adjustable device in this embodiment 5 adopts a forward tapered end, the flow direction passive adjustable device is of a type with an opening at the front end, the sealing manner of the sealant is selected to be integrally sealed, and the gas enters the gas outlet end through flowing to the upper surface of the passive adjustable device, so as to realize the circulation of the gas, and the gas inlet manner is as shown in fig. 14.
Example 6
The basic structure of this embodiment 6 is the same as that of embodiment 1, except that the flow direction passive adjustable device in this embodiment 6 is a flow direction passive adjustable device of a type having a forward tapered end and a non-perforated front end, and the operation is performed as shown in fig. 13. In addition, the passive flow direction adjustable device in this embodiment 6 adopts a flow direction passive adjustable device of a type having a forward tapered end and a non-hole front end.
Example 7
This example 7 has the same basic structure as that of example 1, except that the sealant is sealed in quarter portions as shown in fig. 6. In addition, the basic structure of the present example 7 is the same as that of the example 2, except that the sealant is sealed in quarter portions.
Example 8
The basic structure of the embodiment 8 is the same as that of the embodiment 1, except that the sealing manner of the sealant is six-equal-part sealing, as shown in fig. 7. In addition, the basic structure of the present embodiment 8 is the same as that of the embodiment 2, except that the sealing manner of the sealant is a six-part sealing.
Example 9
This embodiment 9 has the same basic structure as that of embodiment 1, except that the flow direction passive adjustable device is an inverted cone-shaped end, and the upper end of the flow direction passive adjustable device is not provided with a hole, as shown in fig. 9. In addition, the basic structure of this embodiment 9 is the same as that of embodiment 2, except that the flow direction passive adjustable device is a flow direction passive adjustable device of which the end is an inverted cone and the front end is not provided with a hole.
Example 10
The basic structure of this embodiment 10 is the same as that of embodiment 1, and the flow direction passive adjustable device in this embodiment is an arc-shaped flow direction passive adjustable device with a non-opening front end, as shown in fig. 10. In addition, the same basic structure as that of embodiment 2 is adopted for the passive flow direction adjustable device in this embodiment 10, which is an arc-shaped passive flow direction adjustable device with a non-perforated front end.
Example 11
The basic structure of this embodiment 11 is the same as that of embodiment 1, and another arc-shaped passive flow direction adjustment device with a non-opening front end is adopted as the passive flow direction adjustment device, as shown in fig. 11. In addition, the same basic structure of this embodiment 11 as that of embodiment 2 is that another arc-shaped passive flow direction adjustable device with no hole at the front end is adopted as the passive flow direction adjustable device, as shown in fig. 12.
Example 12
In this embodiment 12, the basic structure is the same as that of embodiment 1, the upper end of the passive adjustable device is not provided with a hole in the inner gas flow direction of the bearing, the sealing manner of the sealant is selected to be partially sealed, and the gas enters the gas outlet end through the gap of the sealant, so as to realize the circulation of the gas, as shown in fig. 13.
Example 13
This embodiment 13 has the same basic structure as embodiment 1 except that the bearing is square in shape and eight annular restrictors are arranged thereon, as shown in fig. 16. In addition, the basic structure of the present embodiment 13 is the same as that of embodiment 2, except that the bearing is square in shape, and eight annular restrictors are arranged thereon.
Example 14
This embodiment 11 is the same as the basic structure of embodiment 1 except that the shape of the bearing is circular and eight annular restrictors are arranged thereon, as shown in fig. 15. In addition, the present embodiment has the same basic structure as that of embodiment 2, except that the bearing is circular in shape, and eight annular restrictors are arranged thereon.
Example 15
This example 15 is an ideal gas flow direction according to the present invention, which can improve the bearing stability and ensure the bearing to achieve high stiffness effect in a wider gas film gap region, and ensure the precision of the gas bearing, as shown in fig. 17.
Example 16
This example 16 is an illustration of the generation of a vortex in the present invention, which would result in a reduction in the bearing capacity and a reduction in the bearing stability, as shown in fig. 18.
The flow direction adjustable gas driven bearing provided by the invention has the beneficial effects that:
1. the bearing has good stability and certain bearing capacity, and can simultaneously ensure that the bearing realizes a high-rigidity effect in a wider gas film clearance area and ensure the precision of the gas bearing;
2. the number relation of the throttlers can be flexibly configured according to the requirements of performance and cost, the length of the passive adjusting device and the section shape of the tail end are changed simultaneously, the flow direction change in different forms is realized, and the bearing capacity range required by experiments is achieved.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a flow direction adjustable gas passive bearing, a serial communication port, including the bearing, be equipped with air flue (1), flow controller and flow direction passive adjustable device (6) in the bearing, air flue (1) with the flow controller intercommunication, flow direction passive adjustable device (6) include the front end and with the end that the front end is connected, the front end is located air flue (1) with the junction of flow controller, the front end is received in air flue (1) just the front end is close to one side of flow controller is pasted through sealed glue (7) on the inner wall of air flue (1), the end is inserted the end (4) of giving vent to anger of flow controller, the sealed mode of sealed glue (7) is local seal, and is gaseous through sealed glue (7) clearance entering give vent to anger end (4), realize gaseous circulation.
2. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the cross section of the air passage (1) is circular, rectangular, rhombic, semicircular or triangular.
3. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the restrictor is a small-hole restrictor (2) or a toroidal restrictor (3).
4. The gas driven bearing with adjustable flow direction according to claim 3, wherein: and the air outlet end (4) of the small-hole throttler (2) is provided with a pressure equalizing cavity (5).
5. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the number of the throttlers is one or more, and the arrangement mode is not limited.
6. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the front end of the flow direction passive adjustable device (6) is provided with a through hole which penetrates through the air passage and the throttler, and the cross section of the through hole is circular, rectangular, rhombic, semicircular or triangular.
7. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the cross section of the tail end of the flow direction passive adjustable device (6) is in an inverted cone shape, a forward cone shape, a spherical shape or an arc shape.
8. The gas driven bearing with adjustable flow direction according to claim 1, wherein: the cross section of the air outlet end (4) is circular, rectangular, rhombic, semicircular or triangular.
9. The gas driven bearing with adjustable flow direction according to claim 4, wherein: the cross section of the pressure equalizing cavity (5) is circular, rectangular, rhombic, semicircular or triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237662.0A CN113090660B (en) | 2021-03-04 | 2021-03-04 | Flow direction adjustable gas passive bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237662.0A CN113090660B (en) | 2021-03-04 | 2021-03-04 | Flow direction adjustable gas passive bearing |
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| Publication Number | Publication Date |
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| CN113090660A CN113090660A (en) | 2021-07-09 |
| CN113090660B true CN113090660B (en) | 2022-09-02 |
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| CN202110237662.0A Active CN113090660B (en) | 2021-03-04 | 2021-03-04 | Flow direction adjustable gas passive bearing |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115163667B (en) * | 2022-07-27 | 2024-06-14 | 合肥工业大学 | Plane static pressure air bearing of vortex formula giving vent to anger |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887914A (en) * | 1988-10-26 | 1989-12-19 | Industrial Technology Research Institute | Aerostatic bearing with an adjustable stabilizing structure |
| JP2000120686A (en) * | 1998-10-15 | 2000-04-25 | Ntn Corp | Rotary driving device |
| CN102788087B (en) * | 2012-06-25 | 2015-06-03 | 中国计量学院 | Static pressure gas bearing with low vibration and high precision |
| KR101965323B1 (en) * | 2017-07-12 | 2019-04-03 | 주식회사 알피에스 | Apparatus for adjusting stiffness of air bearing |
| US10422590B2 (en) * | 2017-09-26 | 2019-09-24 | National Technology & Engineering Solutions Of Sandia, Llc | Air bearing heat exchanger |
| CN110848259B (en) * | 2019-12-17 | 2024-07-02 | 中国工程物理研究院机械制造工艺研究所 | Static pressure gas thrust bearing with adjustable throttling effect |
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