VIBRATION MONITORING IN TURBINES--WITHOUT UNCERTAINTIES

Existing vibration monitoring systems usually rely on sensors mounted externally on bearing cases. These sensors also pick up vibrations from sources other than the fault conditions they are designed to detect. Inertia Switch Ltd. of Camberley, Surrey, has developed a new vibration displacement monotor which is actually imbedded in the bearing casing. Thus it is insensitive to vibrations other than those of the shaft within the bearing. When placed at specific points in a turbine casing, these sensors can detect blade failure. This new system is capable of detecting a peak to peak change in amplitude of .0001 in. It can also be equipped with an automatic alarm and shut-down sequence.

• Corporate Authors:

  Whitehall Technical Press Limited

  Wrotham Place
  Wrotham, Sevenoaks, Kent ME14 1PE,   England 
• Authors:
  • Forbat, J E
• Publication Date: 1971-9

Media Info

• Features: Figures;
• Serial:
  • Marine Engineer and Naval Architect
  • Volume: 94
  • Issue Number: 1146
  • Publisher: Whitehall Technical Press Limited

Subject/Index Terms

• TRT Terms: Blades (Machinery); Deformation; Instrumentation; Machinery; Measurement; Shafts (Machinery); Turbines; Vibration
• Old TRIS Terms: Machinery instrumentation; Machinery vibration; Turbine blade vibration; Vibration measurement
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00019601
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Nov 25 1973 12:00AM