METHOD OF AND DEVICE FOR MEASURING PARAMETERS OF MOVEMENT OF TURBOMACHINEROTOR BLADE AND FACES Russian patent published in 2004 - IPC

FIELD: mechanical engineering; turbomachines.

SUBSTANCE: invention can be used for noncontact control of parameters of movement of rotor blade end faces in process of testing and operation of turbomachine. According to proposed method, one differential eddy-current differential transducer with two single-turn coils is installed on stator. Secondary windings of matching transformers of both coils are connected in series and are placed as leg of bridge measuring circuit of one measuring channel. Linear velocity, period of rotation of rotor, axial displacement of rotor, angle of turning of blade airfoil portion relative to initial setting and clearance between end face of blade and face of transducer are found by amplitude and time parameters of output signal and its derivative.

EFFECT: increased information content in process of measurement, reduced volume of preparatory operations.

7 cl, 5 dwg