What are the causes of turbine vibration
Answers were Sorted based on User's Feedback
Answer / devanesan
1.Misalignment.
2.Loseness in Bearing mountings.
3.Rotor rubbing with stationary parts like sealing fins or
oil guard.
4.water partical entering into the turbine(due to improper
warming up of turbine and pipelines.
5.back pressure increasing due to steam flow path volume
reduction(silica deposition in fix blade.)
6. unbalence of rotor.
7. obstractions in the free expanding parts of turbine and
its associated pipe lines.
etc.....
Is This Answer Correct ? | 42 Yes | 2 No |
Answer / vijaya bhaskar reddy
Vibrations in the turbine occure due to the some
misalignments in the mounting stage.
natural frequency should be higher than the external
excitation erequency to avoid the dangerous phenomenon resonance
Is This Answer Correct ? | 21 Yes | 3 No |
yeah right..every rotor howmch ever care taken cannot be
properly placed or properly balanced..it could be minimised
by adjusting the mounting and mass distribution at a given
configuration dynamically by operating it at its maximum
speed..at its natural frequency it still vibrates high..
so the main causes of turbine vibration are
unbalancing,fluid flow instabilities & mounting problems..
fluid flow problems effect greatly the axial vibrations..
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / t. chandra shekhar
Centering of bearing
Misaligned
Shaft to center axis
Un balance of rotor
Not maintained interference in between bearing and housing
Not maintained in holding down bolts
Is This Answer Correct ? | 5 Yes | 0 No |
Answer / shardul raghuvanshi
According to me the main cause of turbine vibration as
follow-
1)due to lube oil system not working proper.
2)due to disalingment of turbine rotor.
3)changing in the nature of lube oil.
4)due to some water particle on the turbine blade.
5
Is This Answer Correct ? | 8 Yes | 4 No |
Answer / gyanaranjan rout
1. If there is any problem duing the the erectioning and commisioning.
2. Over heating of stator and rotor component.
3. Breakge of Turbine blade inside the turbine.
4. Clearence between fix blade and moving blade become less.
5. Neglating in maintenance of turbine.
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / anil shukla
1.misalignment .2.coupling bolts loose.3.not fallow proper heating & barring process. 4.bearing clearance less/more 5.foreign material enter in journal bearing.6.back presser develop in turbine.7.oil pressure not maintained as per require.8.load increasing slowly.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / karthick
the rotor of the turbine will be made up of some material
and that material will have its own natural frequency if
the rotor of the turbine exceeds the
natural frequency then the turbine will be subjected to
vibratiion it may cause damage to turbibe
rotor
Is This Answer Correct ? | 11 Yes | 12 No |
Answer / ashish kumar
1)inertia of the rotor blade
2)due to unusual supply of steam
Is This Answer Correct ? | 3 Yes | 8 No |
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