Steady state and dynamic characteristics for guide bearings of a hydro-electric unit

Experiments are conducted using a 10-MW Kaplan hydropower machine which is outfitted with an extensive array of sensors to determine oil film thickness, pad load and oil temperature in all three guide bearings as well as motion of the shaft in relation to both the bearing housings and the concrete foundation. Test results for all journal bearings are compared to a commercial rotor dynamics model and results for the central journal bearing are compared to a multi-physics model to provide insight into the machine's steady state and dynamic characteristics and their variations during normal operation.

[1]  Fulei Chu,et al.  Influence of pre-load coefficient of TPJBs on shaft lateral vibration , 2002 .

[2]  Raj K. Pandey,et al.  An Investigation into the Validity of the Temperature Profile Approximations across the Film Thickness in THD Analysis of Infinitely Wide Slider Bearing , 2006 .

[3]  O. De Santiago,et al.  Identification of Journal Bearing Force Coefficients under High Dynamic Loading Centered Static Operation , 2005 .

[4]  Alessandro Rebora,et al.  Steadily loaded journal bearings : Quasi-3D mass-energy-conserving analysis , 2009 .

[5]  M. Nässelqvist.  Simulation and characterization of rotordynamic properties for hydropower units , 2009 .

[6]  Maurice F. White,et al.  Rotordynamic analysis of a vertical pump with tilting-pad journal bearings , 1997 .

[7]  Michel Cervantes,et al.  Porjus U9A full-scale hydropower research facility , 2008 .

[8]  M. Fillon,et al.  Numerical Study of the Sensitivity of Tilting-Pad Journal Bearing Performance Characteristics to Manufacturing Tolerances: Dynamic Analysis , 2008 .

[9]  Jan-Olov Aidanpää,et al.  Determination of Journal Bearing Stiffness and Damping at Hydropower Generators Using Strain Gauges , 2005 .

[10]  Paul E. Allaire,et al.  Identification methods and test results for tilting pad and fixed geometry journal bearing dynamic coefficients – A review , 2009 .

[11]  Amit Chauhan,et al.  Thermohydrodynamic analysis of elliptical journal bearing with different grade oils , 2010 .

[12]  Sergei Glavatskih,et al.  Synthetic Lubricants in Hydrodynamic Journal Bearings: Experimental Results , 2011 .

[13]  MICHEL FILLON,et al.  Numerical Study of the Sensitivity of Tilting Pad Journal Bearing Performance Characteristics to Manufacturing Tolerances: Steady-State Analysis , 2007 .

[14]  S. Glavatskih.  A method of temperature monitoring in fluid film bearings , 2004 .

[15]  Rakesh Sehgal,et al.  A study of thermal effects in an offset‐halves journal bearing profile using different grade oils , 2011 .