Vibration Analysis - Measuring Vibration Data on Turbo Machinery

Dean Whittle training manager at RMS Reliability Training Institute (www.rms-traini...) shows how to collect vibration data from turbo machinery.
For those new to Vibration Analysis, this educational video by Dean Whittle offers a comprehensive insight into the vibration monitoring and prediction of turbines at a CHP (Combined Heat and Power) plant:
The Turbines:
• The CHP plant features a 25-megawatt steam turbine and a 45-megawatt gas turbine.
• Both turbines are equipped with online vibration protection systems that monitor the shaft movement within a white metal lining.
• The turbines utilise hydrodynamic bearings, also known as sleeve bearings or white metal bearings.
Vibration Monitoring:
• The turbines have X&Y probes that measure the gap between the probe tip and the shaft within the bearing, effectively measuring the movement of the shaft in free space.
• The steam turbine shaft operates at 9,000 rpm.
Machine Protection vs. Prediction:
• Machine protection involves safeguarding the turbine from immediate threats.
• Machine prediction focuses on foreseeing potential issues based on current data.
Measurement Process:
• Dean demonstrates how to take measurements on the casing of the bearing in three axes: horizontally, vertically, and at the non-drive end.
• It's essential to measure the dynamic movement of the shaft itself, which requires accessing the control room and connecting to the X&Y probes.
Gas Turbine Specifics:
• The 45-megawatt gas turbine's power turbine operates at about 10,200 rpm, while the compressor end runs at approximately 3,500 rpm.
• A gearbox reduces the speed to 1,500 rpm, which then drives the generator at the same speed.
Control Room Measurements:
• The gas turbine protection system is designed to shut down the machine in case of sudden, catastrophic changes in machine dynamics.
• Dean connects to the X&Y probes and any relevant casing measurements to monitor the dynamic movement of the shaft in free space.
• A speed reference signal is used as a trigger to understand the motion of the system.
• Dean emphasises the importance of recording process parameters like flow rate, temperature, and load before starting vibration readings.
Conclusion:
• Vibration monitoring provides predictive information about potential issues in the turbine, complementing the existing protection systems.
• The dynamic movement of the shaft, separated by a film of oil and a white metal lining in the bearing, is crucial to understand for effective monitoring and prediction.
#vibrationanalysis
#conditionmonitoring
#turbines #gasindustry

[@rajkanthaero461]

Insightful video.

[@abdelbassetbenayache9346]

thank you so much for the video

[@ramonruizyou1000]

thanks for the video..

[@hosseinvaladi7457]

What is the name of the RMS Training Institute?

[@MarcusViniciusMO]

What flows are measured in these turbines?