CN101709747A - Foil dynamical pressure radial air journal bearing with backward wave foil support - Google Patents

Foil dynamical pressure radial air journal bearing with backward wave foil support Download PDF

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Publication number
CN101709747A
CN101709747A CN200910218997A CN200910218997A CN101709747A CN 101709747 A CN101709747 A CN 101709747A CN 200910218997 A CN200910218997 A CN 200910218997A CN 200910218997 A CN200910218997 A CN 200910218997A CN 101709747 A CN101709747 A CN 101709747A
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CN
China
Prior art keywords
paper tinsel
foil
negative pressure
bearing
pressure wave
Prior art date
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.)
Pending
Application number
CN200910218997A
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Chinese (zh)
Inventor
侯予
张侨禹
赵祥雄
赵红利
陈双涛
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Xian Jiaotong University
Henan Agricultural University
Original Assignee
Xian Jiaotong University
Henan Agricultural University
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.)
Filing date
Publication date
Application filed by Xian Jiaotong University, Henan Agricultural University filed Critical Xian Jiaotong University
Priority to CN200910218997A priority Critical patent/CN101709747A/en
Publication of CN101709747A publication Critical patent/CN101709747A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/02Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/024Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00Assembling bearings
    • F16C43/02Assembling sliding-contact bearings

Abstract

The invention provides a foil dynamical pressure radial air journal bearing with a backward wave foil support, which consists of a backward wave foil, a flat foil, a bearing seat, and a positioning piece. In the air journal bearing, the backward wave foil elastic element, of which one end is fixed and the other end is free, and the flat foil are used as a structure which bears load and is deformed, and when the structure bears the load, the backward wave foil and the flat foil are deformed and slip so as to adapt to the change of the radial load. The novel wave foil dynamical pressure radial air journal bearing has the advantages that: the advantages of the flat foil type foil are fully utilized, and the rigidity distribution on the surface of the bearing is uniform; the deformation and slipping of the elastic wave arc of the backward wave foil are fully utilized to adjust the rigidity and dampness of the bearing, so that the rigidity property of the bearing is improved, and the application range of the load is big; the unstable whirling motion of the shaft can be better inhibited, and the stability and the application field of the radial dynamical pressure air journal bearing are enhanced; the structure is simple, the processing and assembly are easy and convenient, and the convenient exchange with the traditional radial dynamical pressure air journal bearing is realized.

Description

A kind of have the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support
Technical field
The invention belongs to the hydrodynamic gas-lubricated bearing field in the Machine Design, particularly a kind of be applicable to high rate turbine (turbine) machinery be applied to different rotating speeds and bearing capacity scope have the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support.
Background technique
Gas bearing is a kind of fluid film lubricating bearings that adopts gas as lubricant medium, promptly forms air film between axle and bearing, makes moving surface and stationary face avoid taking place directly to contact.The paillon foil formula is dynamical pressure radial gas bearing provided to be radial gas bearing provided a kind of important form, because the superiority of paillon foil formula hydrodynamic gas-lubricated bearing on high rate turbine (turbine) machine applications comes into one's own day by day to its research application in recent years, and developed rapidly.But because it is mainly used in military industry fields such as Aeronautics and Astronautics, armored vehicle, its result of study and design standard are seldom open, and its exploitation input is huge, and complex manufacturing process and processing technology level require high.At present high rate turbine (turbine) mechanical field the most the radial foil hydrodynamic gas-lubricated bearing of extensive use be the ripple paper tinsel hydrodynamic gas-lubricated bearing of the U.S., adopted by various fighter environmental control systems, armored vehicle turbine refrigerator.Yet this bearing structure complexity, required precision height, the performance of bearing and the situation of installation also have much relations; And make difficulty, all need carry out a large amount of work from the selection of the determining of design criterion, physical dimension, material selection and processing and heat treatment process; In addition, because structural limitations, existing bump foil bearing structural rigidity is inhomogeneous, the load adaptation scope is little.Given this, development structure is simple, be fit to domestic industry level, independent intellectual property rights and have even rigidity and the novel foil dynamical pressure gas bearing of excellent damping characteristic and bigger load adaptation scope, just seems very urgent and necessary with the needs that satisfy China's high rate turbine application development.
Summary of the invention
The object of the present invention is to provide a kind of advantage that can give full play to traditional dynamic pressure foil gas bearing, have wideer load adaptation scope, higher run stability again, better yielding support performance and dynamic characteristic has the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support.
For achieving the above object, the technical solution used in the present invention is as follows: comprise the bearing support that is sleeved on the main shaft, between bearing support and main shaft, be provided with negative pressure wave paper tinsel peace paper tinsel certainly outside to inside, one end of said negative pressure wave paper tinsel peace paper tinsel is fixed in the draw-in groove of bearing support, the other end of negative pressure wave paper tinsel peace paper tinsel all is in free state, makes negative pressure wave paper tinsel peace paper tinsel have the space of distortion and slippage.
Negative pressure wave paper tinsel of the present invention is made of many elastic waves, the arc convex top of negative pressure wave paper tinsel along circumferentially distribute and with bearing support inboard paste and, between the ripple of negative pressure wave paper tinsel arch the transition base paste with flat paper tinsel and, the negative pressure wave paper tinsel is that slip direction is opposite with the main axis rotation direction with the extension of the elastic element of flat paper tinsel composition; One end of negative pressure wave paper tinsel peace paper tinsel is fixed in the draw-in groove of bearing support by locating piece.
The present invention has simple in structure, is easy to the advantage of processing, assembling, and can realize exchanging with existing radial dynamic pressure gas bearing easily.Ripple paper tinsel of the present invention arc top and bearing support be inboard paste and, paste with flat paper tinsel elastic wave arch bottom and new structure, embodied the rigidity and the damping characteristic of good rigidity uniformity of flat paper tinsel and negative pressure wave paper tinsel yielding support excellence.When bearing bears radial load, the distortion of flat paper tinsel and slippage can make load transfer to lower floor's negative pressure wave paper tinsel, circumferentially distortion and the more existing foil bearing of slip characteristic all have significantly raising under loading to make it, thereby produce appropriate rigidity and damping and adapt to wideer load range, and the effectively unstable whirling motion of containment axle, improve run stability.
Therefore novel ripple paper tinsel radial dynamic pressure gas bearing of the present invention has good quiet, dynamic performance and stability; And flat paper tinsel played the effect of bearing flexible surface bearing, and it is continuous that pressure in the bearing play and air-film thickness distribute, and also is that face contacts even rotor takes place to rub with bearing surface, greatly reduces the damage of rotor and bearing surface.Can also be by regulating the material and the characteristic parameter of negative pressure wave paper tinsel, circumferentially structural parameter such as the regularity of distribution, density, ripple arch physical dimension change the rigidity and the damping characteristic of bearing.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention;
Fig. 2 is the stressed schematic representation of paillon foil elastic element of the present invention work.
Among Fig. 1 Fig. 2: 1. main shaft; 2. flat paper tinsel; 3. negative pressure wave paper tinsel; 4. bearing support; 5. locating piece.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the present invention includes the bearing support 4 that is sleeved on the main shaft 1, at the negative pressure wave paper tinsel 3 of bearing support 4 disposed inboard, the locating piece 5 of being close to the flat paper tinsel 2 of negative pressure wave paper tinsel 3 and being used for fixing the compliant foil original paper.One end of negative pressure wave paper tinsel 3 and flat paper tinsel 2 utilizes locating piece 5 to be fixed in the draw-in groove, and both the other end freedom (both sizes are consistent) make it have the space of deformation, slippage.Negative pressure wave paper tinsel 3 is made of many elastic waves, the arc convex top of negative pressure wave paper tinsel 3 along circumferentially distribute and with bearing support 4 inboard paste and, between the ripple of negative pressure wave paper tinsel 3 arch the transition base paste with flat paper tinsel 4 and, negative pressure wave paper tinsel 3 is that slip direction is opposite with main shaft 1 sense of rotation with the extension of the elastic element of flat paper tinsel 2 compositions.
Referring to Fig. 2, when bearing of the present invention bears radial load, the distortion of flat paper tinsel 2 and slippage can make load transfer to lower floor's negative pressure wave paper tinsel 3, bearing support 4 inboards are close on negative pressure wave paper tinsel 3 arc convex tops, make negative pressure wave paper tinsel 3 can produce deformation and slippage in a big way, form pressure continuous in the bearing play and air-film thickness and distribute, adapt to large-scale load change to obtain comparatively uniform stiffness variable and structural damping.When turbomachinery turns round, the size in flat paper tinsel 2 and main shaft 1 gap changes along with the variation of suffered load F of bearing and rotational speed omega, cause behind the lubricated air film pressurized in the gap that negative pressure wave paper tinsel 3 produces deformation, the deformation of negative pressure wave paper tinsel 3 causes the relative slippage of generation between negative pressure wave paper tinsel 3, flat paper tinsel 2 and the bearing support 4, produces structural damping, frictional damping and stiffness variable.When axle rotates, rotate the peripheral force that causes by axle, pass to negative pressure wave paper tinsel 3 by lubricated air film from flat paper tinsel 2 with viscosity, because side contacts in negative pressure wave paper tinsel 3 arc convex tops and the bearing support 4, formed certain wrapping angle, negative pressure wave paper tinsel 3 arc convex tops will produce one the circumferential directed force F in edge t, the ripple dome portions of impelling negative pressure wave paper tinsel 3 is with respect to bearing support 4 slippages, and the generation frictional damping, effectively suppresses the whirling motion of axle.

Claims (3)

1. one kind has the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support, comprise the bearing support (4) that is sleeved on the main shaft (1), it is characterized in that: between bearing support (4) and main shaft (1), be provided with the peaceful paper tinsel of negative pressure wave paper tinsel (3) (4) certainly outside to inside, one end of the peaceful paper tinsel of said negative pressure wave paper tinsel (3) (4) is fixed in the draw-in groove of bearing support (4), the other end of the peaceful paper tinsel of negative pressure wave paper tinsel (3) (4) all is in free state, makes the peaceful paper tinsel of negative pressure wave paper tinsel (3) (4) have the space of distortion and slippage.
2. according to claim 1 have the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support, it is characterized in that: said negative pressure wave paper tinsel (3) is made of many elastic waves, the arc convex top of negative pressure wave paper tinsel (3) along circumferentially distribute and with bearing support (4) inboard paste and, between the ripple of negative pressure wave paper tinsel (3) arch the transition base paste with flat paper tinsel (4) and, negative pressure wave paper tinsel (3) is that slip direction is opposite with main shaft (1) sense of rotation with the extension of the elastic element of flat paper tinsel (2) composition.
3. according to claim 1 have the foil dynamical pressure radial gas bearing provided of negative pressure wave foil support, and it is characterized in that: an end of the peaceful paper tinsel of said negative pressure wave paper tinsel (3) (4) is fixed in the draw-in groove of bearing support (4) by locating piece (5).
CN200910218997A 2009-11-17 2009-11-17 Foil dynamical pressure radial air journal bearing with backward wave foil support Pending CN101709747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910218997A CN101709747A (en) 2009-11-17 2009-11-17 Foil dynamical pressure radial air journal bearing with backward wave foil support

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Application Number Priority Date Filing Date Title
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839281A (en) * 2010-05-27 2010-09-22 西安交通大学 Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support
CN102562801A (en) * 2011-12-13 2012-07-11 哈尔滨东安发动机(集团)有限公司 Aerodynamic bearing
CN102797746A (en) * 2012-08-29 2012-11-28 哈尔滨工业大学 Lubricating-oil leafy foil bearing with changeable pitch supported by bump foil
CN102954102A (en) * 2012-11-05 2013-03-06 湖南大学 High damping foil dynamic pressure gas bearing filled with metal particles
CN103438091A (en) * 2013-08-02 2013-12-11 湖南大学 Aero dynamic bearing with metal rubber and elastic chaff composite support structure
CN103649572A (en) * 2011-07-22 2014-03-19 株式会社Ihi Radial foil bearing
CN104135103A (en) * 2014-08-20 2014-11-05 石家庄金士顿轴承科技有限公司 High-speed asynchronous induction motor with hydrodynamic gas-lubricated bearings
CN104603480A (en) * 2012-09-06 2015-05-06 西门子公司 Radial gas foil bearing
CN104632884A (en) * 2015-03-01 2015-05-20 北京航空航天大学 Radial-bearing flexible protecting bearing for magnetic suspension high-speed rotating equipment
CN104847791A (en) * 2015-04-28 2015-08-19 无锡市瑞尔精密机械有限公司 Hydrodynamic gas-lubricated bearing using double concave-convex coil-spring rotating body
CN105736571A (en) * 2016-05-08 2016-07-06 湖南大学 Double-layered fork-shaped radial gas hydrodynamic bearing based on 3D printing technology
CN106451894A (en) * 2016-12-05 2017-02-22 中国工程物理研究院机械制造工艺研究所 High-speed permanent magnet motor using aerodynamic pressure foil bearings for supporting
CN106763151A (en) * 2017-01-05 2017-05-31 湖南大学 A kind of thrust air foil bearing with high bearing capacity
CN108071665A (en) * 2017-12-07 2018-05-25 大连理工大学 spiral groove type radial gas dynamic pressure foil bearing
CN109780051A (en) * 2019-01-22 2019-05-21 西安交通大学 A kind of flexible unit and dynamical pressure radial gas bearing provided
CN110107590A (en) * 2018-08-15 2019-08-09 稳力(广东)科技有限公司 A kind of foil bearing for high speed rotor
CN110242671A (en) * 2019-05-17 2019-09-17 北京科技大学 A kind of cone foil dynamical pressure air bearing
CN110566571A (en) * 2019-08-09 2019-12-13 珠海格力电器股份有限公司 elastic foil gas dynamic pressure bearing
CN110594290A (en) * 2019-08-30 2019-12-20 广州市昊志机电股份有限公司 Flat foil assembly, gas dynamic pressure bearing and high-speed motor
WO2020192874A1 (en) * 2019-03-22 2020-10-01 Bladon Jets Holdings Limited Compliant foil radial bearing
WO2020192880A1 (en) * 2019-03-22 2020-10-01 Bladon Jets Holdings Limited Compliant foil radial bearing

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101839281B (en) * 2010-05-27 2012-07-11 西安交通大学 Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support
CN101839281A (en) * 2010-05-27 2010-09-22 西安交通大学 Foil dynamical pressure radial gas bearing provided with sectionally-combined composite support
CN103649572B (en) * 2011-07-22 2016-01-13 株式会社Ihi Radial bearing foil
CN103649572A (en) * 2011-07-22 2014-03-19 株式会社Ihi Radial foil bearing
CN102562801A (en) * 2011-12-13 2012-07-11 哈尔滨东安发动机(集团)有限公司 Aerodynamic bearing
CN102562801B (en) * 2011-12-13 2017-02-08 哈尔滨东安发动机(集团)有限公司 Aerodynamic bearing
CN102797746A (en) * 2012-08-29 2012-11-28 哈尔滨工业大学 Lubricating-oil leafy foil bearing with changeable pitch supported by bump foil
CN104603480B (en) * 2012-09-06 2017-03-22 西门子公司 Radial gas foil bearing
CN104603480A (en) * 2012-09-06 2015-05-06 西门子公司 Radial gas foil bearing
CN102954102A (en) * 2012-11-05 2013-03-06 湖南大学 High damping foil dynamic pressure gas bearing filled with metal particles
CN102954102B (en) * 2012-11-05 2015-04-08 湖南大学 High damping foil dynamic pressure gas bearing filled with metal particles
CN103438091B (en) * 2013-08-02 2015-12-02 湖南大学 There is the air hydrodynamic bearing of metal-rubber and compliant foil composite support structure
CN103438091A (en) * 2013-08-02 2013-12-11 湖南大学 Aero dynamic bearing with metal rubber and elastic chaff composite support structure
CN104135103A (en) * 2014-08-20 2014-11-05 石家庄金士顿轴承科技有限公司 High-speed asynchronous induction motor with hydrodynamic gas-lubricated bearings
CN104632884A (en) * 2015-03-01 2015-05-20 北京航空航天大学 Radial-bearing flexible protecting bearing for magnetic suspension high-speed rotating equipment
CN104847791A (en) * 2015-04-28 2015-08-19 无锡市瑞尔精密机械有限公司 Hydrodynamic gas-lubricated bearing using double concave-convex coil-spring rotating body
CN105736571B (en) * 2016-05-08 2018-10-02 湖南大学 The double-deck fork-shaped radial gas hydrodynamic bearing based on 3D printing technique
CN105736571A (en) * 2016-05-08 2016-07-06 湖南大学 Double-layered fork-shaped radial gas hydrodynamic bearing based on 3D printing technology
CN106451894A (en) * 2016-12-05 2017-02-22 中国工程物理研究院机械制造工艺研究所 High-speed permanent magnet motor using aerodynamic pressure foil bearings for supporting
CN106763151A (en) * 2017-01-05 2017-05-31 湖南大学 A kind of thrust air foil bearing with high bearing capacity
CN108071665A (en) * 2017-12-07 2018-05-25 大连理工大学 spiral groove type radial gas dynamic pressure foil bearing
CN110107590A (en) * 2018-08-15 2019-08-09 稳力(广东)科技有限公司 A kind of foil bearing for high speed rotor
CN109780051A (en) * 2019-01-22 2019-05-21 西安交通大学 A kind of flexible unit and dynamical pressure radial gas bearing provided
WO2020192874A1 (en) * 2019-03-22 2020-10-01 Bladon Jets Holdings Limited Compliant foil radial bearing
WO2020192880A1 (en) * 2019-03-22 2020-10-01 Bladon Jets Holdings Limited Compliant foil radial bearing
CN110242671A (en) * 2019-05-17 2019-09-17 北京科技大学 A kind of cone foil dynamical pressure air bearing
CN110566571A (en) * 2019-08-09 2019-12-13 珠海格力电器股份有限公司 elastic foil gas dynamic pressure bearing
CN110594290A (en) * 2019-08-30 2019-12-20 广州市昊志机电股份有限公司 Flat foil assembly, gas dynamic pressure bearing and high-speed motor

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