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Diameter - push the United floating ring hydrodynamic bearing structure and Experimental Study

Author: LiRuiZhen
Tutor: ZuoShaoQi
School: Zhengzhou University
Course: Mechanical Engineering
Keywords: Diameter - push the floating ring Hybrid Bearing Restrictor Independent Oil Supply The intima pressure test
CLC: TH133.36
Type: Master's thesis
Year: 2009
Downloads: 53
Quote: 0
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Abstract


Floating -ring hybrid bearings reduce friction power consumption and improve stability characteristics are more and more attention in the field of high-speed rotating machinery . However , the dynamic pressure , static and dynamic pressure floating ring bearing inner and outer membranes unified oil supply structure , on the one hand, difficult to start floating ring , on the other hand , it is difficult to actively control by adjusting the supply pressure bearing - rotor system stability ; this oil , there is a problem in the radial - thrust floating ring Hybrid Bearing the more thrust film within the film restrictor bad choice calculation of boundary conditions and compatibility conditions is extremely difficult to decide . In order to overcome the disadvantage of this oil , an inner and outer membranes ( shunt ) independent oil radial - thrust Floating ring Hybrid Bearing structure , and gives the specific design parameters , processing methods , process route. While addressing the problem of the oil supply system for small and medium - sized deep hole machining and high-speed shaft end oil within the film , pressure sealing . On the basis of design, manufacture, test bearings and test bench , using cubic Excitation measured the floating ring bearing static and dynamic characteristics , detailed analysis of the proposed measures to eliminate the error cause factors and characteristics of the experimental error . Processing of the test data and comparison with the theoretical results , several important conclusions . The bearing structure on the one hand to ensure a smooth start of the floating ring , to avoid the series in the form of pure dynamic pressure floating ring bearing at work due to changes in external conditions , floating ring may be attached to the journal or bearing on the problems ; more importantly, oil pressure by adjusting the brightest active control of the dynamic characteristics of the inside and outside the film , so that once the bearing - rotor system oil whirl or oil whip , you can directly reduce the supply pressure to curb oil whirl or oil whip . This article also more comprehensive analysis of the radial - thrust Floating ring Hybrid Bearing static , dynamic characteristics test system test device , the fuel supply system and loading system design and installation problems and solutions of . On this basis , the use of the inner film features a separate oil supply , the initial pressure measurement at high speed , the inner film structure .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing > Hydrostatic bearing
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