Summary on Turbines

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This post was last edited by Remember those who helped you when you have water to drink_FIUI on 2020-1-6 at 23:01: 1. 3D animation of turbine installation – the structure is clearly visible: https://mp.wei*n.qq.com/s/g9JnInB3dHEcGgUrgIX03A 2. How to distinguish between X and Y vibrations of a turbine? In the measurement of turbine rotor vibration, the X and Y directions do not refer to horizontal and vertical vibrations; both X and Y are at 45 degrees to the vertical direction. It is defined as follows: when observing the direction of rotation of the aircraft from the nose, clockwise movement means the left side corresponds to the X-axis (the second quadrant in the Cartesian coordinate system), while the right side corresponds to the Y-axis (the first quadrant in the Cartesian coordinate system) ； If the unit rotates counterclockwise, the definitions of X and Y are opposite to those mentioned above. https://bbs.hcbbs.com/forum.php?mod=image&aid=2175071&size=300x300&key=272902a54ea00738&nocache=yes&type=fixnone Question: What is the reason for high vibration in only one bearing of a turbine? Answer: Since the vibrations of the other bearings are normal, possibilities such as imbalance, misalignment, or rubbing can be ruled out. The issue lies in the stiffness of the bearing with high vibration; this may be due to insufficient lubricating oil, or insufficient tension or looseness in the bearing, bearing housing, frame, and foundation.