METHOD OF DETERMINING PARAMETERS OF OSCILLATIONS OF BLADES OF ROTATING WHEEL OF TURBINE MACHINE AND DEVICE THEREFOR Russian patent published in 2016 - IPC G01H11/06 

FIELD: measuring equipment.

SUBSTANCE: invention is intended for contact-free determination of amplitude, frequency and phase of oscillations of blades of turbine units and can be used for determination of defects of turbomachine blades during their operation. Method consists in setting on fixed unit of turbo-machine reverse pulse sensor and exciter-recycled mark, as well as in case of turbo-machine, in plane of rotation of controlled bladed wheel over path of ends fixed contact-free peripheral sensor is installed. Sensor records data signals of peripheral primary transducer interaction with end of blades. On basis of reference literature analytical expression is determined and system of nonlinear equations is solved.

EFFECT: high accuracy and reliability of determining amplitude, frequency and oscillation phase of all blades in rotating wheel of turbine machine.

2 cl, 2 dwg