METHOD OF MONITORING RUBBING BETWEEN A ROTARY PARTY AND A STATIONARY PART IN A ROTATING TURBOMACHINE, MONITORING ARRANGEMENT AND TURBOMACHINE

• Main Authors: PEPE Antonello, GARBIN Riccardo, NURZAD Dario, SEPE Marzia
• Format: Patent
• Language: English
• Published: 16.02.2017
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PHYSICS; STEAM ENGINES; TESTING; WEAPONS

The arrangement for monitoring rubbing between a rotary part and a stationary part in a rotating turbomachine comprises at least one mechanical oscillations detector for measuring mechanical oscillations at at least one point of the turbomachine, at least one particles detector for measuring debris passing in at least one section of a flow path of the turbomachine, and an electronic monitoring unit electrically or electromagnetically connected to the oscillations detector and the particles detector, and arranged to acquire and process signals generated by the oscillations detector and the particles detector. The electronic monitoring unit uses the oscillations measurement primarily for estimating presence of rubbing and the debris measurement primarily for estimating severity of rubbing.