CN106545576A - Fluid structurecoupling formula gas shock-wave adjusts bearing - Google Patents
Fluid structurecoupling formula gas shock-wave adjusts bearing Download PDFInfo
- Publication number
- CN106545576A CN106545576A CN201710034627.2A CN201710034627A CN106545576A CN 106545576 A CN106545576 A CN 106545576A CN 201710034627 A CN201710034627 A CN 201710034627A CN 106545576 A CN106545576 A CN 106545576A
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- CN
- China
- Prior art keywords
- bearing
- foil
- damping cavity
- paillon foil
- orifice
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- Legal status (The legal status 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 status listed.)
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Classifications
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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
Abstract
The present invention relates to a kind of fluid structurecoupling formula gas shock-wave adjusts bearing.Now widely used dynamic pressure foil bearing bearing capacity is limited, and its stability is not enough, and foil surfaces plating process has high demands, and static pressure hybrid bearing is deposited and carries not enough and aerodynamic instability under high rotating speed problem at the low rotational speed.Present invention composition includes：Bearing shell（1）, on bearing shell, offer supply throttle orifice（3）, described supply orifice outlet port position has damping cavity（4）, described supply throttle orifice, the structure of described damping cavity are circumferentially evenly arranged a row or multiple rows of, described damping cavity outlet and rotor in inner surface of bearing bush（2）Intermediate arrangement foil configuration（7）, described foil configuration includes ripple paillon foil（6）, flat paillon foil（5）, by changing bearing supply gas pressure, orifice structure and damping cavity configuration, can match with the bearing operating mode of wide arc gap heavy load.The present invention adjusts bearing for fluid structurecoupling formula gas shock-wave.
Description
Technical field：
The present invention relates to a kind of gas bearing. particularly a kind of fluid structurecoupling formula gas shock-wave adjusts bearing.
Background technology：
Gas bearing is low using viscosity and varies with temperature the gas of the characteristics such as little, cleanliness without any pollution, radiation hardness, compressibility be good
Used as lubricant medium, it has the advantages that low in energy consumption, life-span length and high precision, but due to the low viscosity and compressibility of gas
The features such as inhibit bearing in the application in heavily loaded field.
The dynamic pressure foil bearing being widely used at present and static pressure-hybrid bearing, there is also some problems, example
Such as, the subject matter of foil bearing is that bearing capacity is limited, and especially under shutdown process and outer disturbance, its stability is not enough,
And foil surfaces plating process has high demands, foil configuration is more complicated, for static pressure-hybrid bearing, when being continuously increased
During bearing gas supply gas pressure, gas is flowed in restriction can occur congestion at bearing clearance, and occur in bearing clearance sub-
Sonic flow, the supersonic flow even complicated flow field characteristic such as shock wave, in supersonic zone, build-up of pressure loss, reduces bearing
Bearing capacity and stability, that is to say, that deposit and carry not enough and aerodynamic instability under high rotating speed problem at the low rotational speed.
The content of the invention：
It is an object of the invention to provide a kind of fluid structurecoupling formula gas shock-wave adjusts bearing.
Above-mentioned purpose is realized by following technical scheme：
A kind of fluid structurecoupling formula gas shock-wave adjusts bearing, and its composition includes：Bearing shell, offers supply throttle orifice, institute on bearing shell
The supply orifice outlet port position stated has damping cavity, and the described structure for supplying throttle orifice, described damping cavity is in bearing shell
Surface is circumferentially evenly arranged a row or multiple rows of, described damping cavity outlet and rotor intermediate arrangement foil configuration, described
Foil configuration include ripple paillon foil, flat paillon foil, by changing bearing supply gas pressure, orifice structure and damping cavity configuration, can be with
The bearing operating mode of wide arc gap heavy load matches.
Described fluid structurecoupling formula gas shock-wave adjusts bearing, and described supply throttling hole nozzle adopts the Bearing score of scaling type
Your nozzle structure form, the section cavities structure of described damping cavity using indent, described supply throttle orifice directly to
The groove of described ripple paillon foil.
Described fluid structurecoupling formula gas shock-wave adjusts bearing, and described damping cavity outlet is tied with rotor intermediate arrangement paillon foil
Structure, described foil configuration include ripple paillon foil, flat paillon foil, described damping cavity outlet and the flat paillon foil of rotor intermediate arrangement, described
Supply throttle orifice directly to described flat paillon foil.
Beneficial effect：
1. the present invention is applied to the fluid structurecoupling formula gas shock-wave regulation bearing of high-speed overload application, and this bearing takes scaling
The variable cross-section damping cavity configuration of type structure air inlet restriction hole and bearing inner surface, not only can improve the carrying of existing gas bearing
Ability, and the aerodynamic stability of bearing can be improved, further widen the range of application of gas bearing.
Construction featuress of the present invention according to gas bearing and bearing shell axle journal sound part, using lubricant（Gas）With bearing
And rotor（Solid）Fluid structurecoupling flow behavior, by scaling type throttle orifice and bush dampener cavity configuration form, improve gas
Bearing inner flows and the fluid structurecoupling flow behavior between bearing-rotor, improves bearing load carrying capacity and stability, in bearing
Body opens up a row or multi-row throttling air vent, and using scaling type nozzle throttling gas-supplying structure, floating there is provided quiet to rotor
Pressure is carried and damping action.
The present invention adopts scaling type nozzle throttle orifice, when the air-flow of throttle orifice entrance is subsonic speed, throttle orifice runner
The change of interior gas flow rate turns to " subsonic speed-velocity of sound-subsonic speed ", and gas flow rate reaches velocity of sound in throat position, and whole process is occurred without
Also no shock wave Supersonic Flow occurs, when bearing load is larger, bearing supply gas pressure is higher, the air-flow of throttle orifice entrance
Supersonic speed is reached, the change of gas flow rate in throttle orifice runner turns to " supersonic speed-velocity of sound-subsonic speed ", and design point shock-wave spot exists
Throat, after shock wave, gas pressure is improved, and speed is reduced to subsonic speed, is favorably improved carrying on the contrary, so that it is guaranteed that in throttle orifice
Exit position occurs without the Supersonic Flow even complicated mobility status such as shock wave.
The present invention arranges the damping cavity configuration of variable cross-section in the orifice outlet port position of inner surface of bearing bush, when appearance throttling
Gas flowing in hole causes axle not situations such as design point, excessive bearing import supply gas pressure, outlet pressure reduction or fluctuation
Watt-rotor clearance produce shock wave when, damping cavity can adjust the position of shock wave and intensity, it is therefore an objective to control shock wave front back zone
Domain size, by the size for adjusting height intermediate pressure section, autonomous carrying and the stability for adjusting bearing, to adapt to different works
Condition, to improve loading ability of bearing and stability, improves the aerodynamic stability under high pressure high flow condition.
Whole damping cavity configuration of the invention adopts variable cross-section, produces a series of normal shock wave and oblique shock wave group by variable cross-section
Into multishock, can so effectively improve total pressure recovery coefficient, reduce the energy dissipation after shock wave, than under simple normal shock wave
Flow behavior is good.
Description of the drawings：
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the schematic diagram of bearing axial arrangement of the present invention.
Accompanying drawing 3 is the schematic diagram of bearing circumferentially deploying structure of the present invention.
Accompanying drawing 4 is the structural representation that fluid structurecoupling formula gas shock-wave of the present invention adjusts sliding bearing.
Accompanying drawing 5 is that fluid structurecoupling formula gas shock-wave of the present invention adjusts foil bearing（There is ripple paillon foil）Structural representation.
Accompanying drawing 6 is that fluid structurecoupling formula gas shock-wave of the present invention adjusts foil bearing（Without ripple paillon foil）Structural representation.
Specific embodiment：
Embodiment 1：
A kind of fluid structurecoupling formula gas shock-wave adjusts bearing, and its composition includes：Bearing shell 1, offers supply throttle orifice 3 on bearing shell,
Described supply orifice outlet port position has damping cavity 4, and described supplies throttle orifice, the structure of described damping cavity in bearing shell
Inner surface is circumferentially evenly arranged a row or multiple rows of, described damping cavity outlet and 2 intermediate arrangement foil configuration 7 of rotor,
Described foil configuration includes ripple paillon foil 6, flat paillon foil 5, by changing bearing supply gas pressure, orifice structure and damping cavity knot
Structure, can be matched with the bearing operating mode of wide arc gap heavy load.
Embodiment 2：
Fluid structurecoupling formula gas shock-wave according to embodiment 1 adjusts bearing, and described supply throttling hole nozzle is using scaling
The Laval nozzle version of type, described damping cavity adopt the section cavities structure of indent, described supply throttle orifice
Directly to the groove to described ripple paillon foil.
Embodiment 3：
Fluid structurecoupling formula gas shock-wave according to embodiment 1 adjusts bearing, cloth in the middle of described damping cavity outlet and rotor
Foil configuration is put, described foil configuration includes ripple paillon foil, flat paillon foil, described damping cavity outlet and the flat paper tinsel of rotor intermediate arrangement
Piece, described supply throttle orifice is directly to described flat paillon foil.
Claims (3)
1. a kind of fluid structurecoupling formula gas shock-wave adjusts bearing, and its composition includes：Bearing shell, is characterized in that：Confession is offered on bearing shell
Moral discharge orifice, described supply orifice outlet port position have damping cavity, and described supplies throttle orifice, the knot of described damping cavity
Structure is circumferentially evenly arranged a row or multiple rows of, described damping cavity outlet and rotor intermediate arrangement paillon foil in inner surface of bearing bush
Structure, described foil configuration include ripple paillon foil, flat paillon foil, by changing bearing supply gas pressure, orifice structure and damping cavity
Structure, can be matched with the bearing operating mode of wide arc gap heavy load.
2. fluid structurecoupling formula gas shock-wave according to claim 1 adjusts bearing, it is characterized in that：Described supply throttle orifice
Laval nozzle version of the nozzle using scaling type, described damping cavity adopt the section cavities structure of indent, described
Supply throttle orifice directly to the groove to described ripple paillon foil.
3. fluid structurecoupling formula gas shock-wave according to claim 1 and 2 adjusts bearing, it is characterized in that：Described damping cavity
Outlet and rotor intermediate arrangement foil configuration, described foil configuration include ripple paillon foil, flat paillon foil, described damping cavity outlet with
The flat paillon foil of rotor intermediate arrangement, described supply throttle orifice is directly to described flat paillon foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034627.2A CN106545576B (en) | 2017-01-18 | 2017-01-18 | Fluid-solid coupling type gas shock wave adjusting bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034627.2A CN106545576B (en) | 2017-01-18 | 2017-01-18 | Fluid-solid coupling type gas shock wave adjusting bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106545576A true CN106545576A (en) | 2017-03-29 |
| CN106545576B CN106545576B (en) | 2020-07-24 |
Family
ID=58398495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710034627.2A Active CN106545576B (en) | 2017-01-18 | 2017-01-18 | Fluid-solid coupling type gas shock wave adjusting bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106545576B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504066A (en) * | 2017-08-14 | 2017-12-22 | 武汉科技大学 | A kind of integral shaft symmetrical jet pressure stabilizing cavity supplied to high pressure disk gas bearing |
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| GB955803A (en) * | 1959-06-26 | 1964-04-22 | Escher Wyss Ag | Improvements in or relating to aerostatic bearings |
| JPH0147649B2 (en) * | 1982-11-17 | 1989-10-16 | Aisin Seiki | |
| SU1712692A2 (en) * | 1990-03-30 | 1992-02-15 | Московский авиационный технологический институт им.К.Э.Циолковского | Hydrostatic bearing |
| US20080310779A1 (en) * | 2007-06-18 | 2008-12-18 | Agrawal Giridhari L | Restrained, reverse multi-pad bearing assembly |
| WO2009124582A1 (en) * | 2008-04-07 | 2009-10-15 | Abb Research Ltd | Gas-insulated high voltage switch |
| JP2009287654A (en) * | 2008-05-28 | 2009-12-10 | Shimadzu Corp | Dynamic-pressure gas foil bearing |
| CN101749322A (en) * | 2008-12-05 | 2010-06-23 | 通用电气公司 | Self-adapting mixed gas radial journal bearing using integral silk net damper |
| CN103438091A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Aero dynamic bearing with metal rubber and elastic chaff composite support structure |
| CN103453017A (en) * | 2013-05-08 | 2013-12-18 | 哈尔滨耦合动力工程技术中心有限公司 | Dynamic and static pressure air floating bearing with zooming structure molded line |
| CN103591127A (en) * | 2013-10-24 | 2014-02-19 | 西安交通大学 | Dynamic pressure transverse bearing with variable dip angle slotting chaff |
| CN104632871A (en) * | 2015-03-17 | 2015-05-20 | 湖南大学 | Minitype foil aerodynamic pressure bearing |
| CN105498270A (en) * | 2016-01-15 | 2016-04-20 | 南京北大工道创新有限公司 | Supersonic-speed high-pressure throttling condensing device |
| CN205388095U (en) * | 2016-03-04 | 2016-07-20 | 至玥腾风科技投资有限公司 | Electromagnetism makes active dynamic pressure gas bearing of ability |
| WO2016114418A1 (en) * | 2015-01-13 | 2016-07-21 | 주식회사 부강테크 | Air foil bearing having sensing device using piezoelectric element |
-
2017
- 2017-01-18 CN CN201710034627.2A patent/CN106545576B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB955803A (en) * | 1959-06-26 | 1964-04-22 | Escher Wyss Ag | Improvements in or relating to aerostatic bearings |
| JPH0147649B2 (en) * | 1982-11-17 | 1989-10-16 | Aisin Seiki | |
| SU1712692A2 (en) * | 1990-03-30 | 1992-02-15 | Московский авиационный технологический институт им.К.Э.Циолковского | Hydrostatic bearing |
| US20080310779A1 (en) * | 2007-06-18 | 2008-12-18 | Agrawal Giridhari L | Restrained, reverse multi-pad bearing assembly |
| WO2009124582A1 (en) * | 2008-04-07 | 2009-10-15 | Abb Research Ltd | Gas-insulated high voltage switch |
| JP2009287654A (en) * | 2008-05-28 | 2009-12-10 | Shimadzu Corp | Dynamic-pressure gas foil bearing |
| CN101749322A (en) * | 2008-12-05 | 2010-06-23 | 通用电气公司 | Self-adapting mixed gas radial journal bearing using integral silk net damper |
| CN103453017A (en) * | 2013-05-08 | 2013-12-18 | 哈尔滨耦合动力工程技术中心有限公司 | Dynamic and static pressure air floating bearing with zooming structure molded line |
| CN103438091A (en) * | 2013-08-02 | 2013-12-11 | 湖南大学 | Aero dynamic bearing with metal rubber and elastic chaff composite support structure |
| CN103591127A (en) * | 2013-10-24 | 2014-02-19 | 西安交通大学 | Dynamic pressure transverse bearing with variable dip angle slotting chaff |
| WO2016114418A1 (en) * | 2015-01-13 | 2016-07-21 | 주식회사 부강테크 | Air foil bearing having sensing device using piezoelectric element |
| CN104632871A (en) * | 2015-03-17 | 2015-05-20 | 湖南大学 | Minitype foil aerodynamic pressure bearing |
| CN105498270A (en) * | 2016-01-15 | 2016-04-20 | 南京北大工道创新有限公司 | Supersonic-speed high-pressure throttling condensing device |
| CN205388095U (en) * | 2016-03-04 | 2016-07-20 | 至玥腾风科技投资有限公司 | Electromagnetism makes active dynamic pressure gas bearing of ability |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504066A (en) * | 2017-08-14 | 2017-12-22 | 武汉科技大学 | A kind of integral shaft symmetrical jet pressure stabilizing cavity supplied to high pressure disk gas bearing |
| CN107504066B (en) * | 2017-08-14 | 2019-05-17 | 武汉科技大学 | A kind of integral shaft symmetrical jet pressure stabilizing cavity supplied to high pressure disk gas bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106545576B (en) | 2020-07-24 |
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Address after: 150000 No. 92, West Da Zhi street, Nangang District, Harbin, Heilongjiang. Patentee after: HARBIN INSTITUTE OF TECHNOLOGY Patentee after: Nanjing Coupling Power Engineering Technology Co.,Ltd. Address before: 150001 No. 92 West straight street, Nangang District, Heilongjiang, Harbin Patentee before: HARBIN INSTITUTE OF TECHNOLOGY Patentee before: Harbin Coupled Power Engineering Technology Centre Co.,Ltd. |