DEVICE FOR INDICATION OF LIMIT PARAMETERS OF VIBRATION Russian patent published in 1995 - IPC

FIELD: vibration diagnostics of rotor machines. SUBSTANCE: device for indication of limit parameters of vibration of rotor machines includes first pickup 1, first signal converter 2, first amplifier-converter 3 and comparison element 4 connected in series, second pickup 5, second signal converter 6 and second amplifier-converter 7 connected in series, first comparator 8, first key 9 and AND gate 10 connected in series, second comparator 11, second key 12 and OR ELSE gate 13 connected in series, OR gate 14, delay element 15 and additionally inserted N measurement circuits 16, where N is number of controlled harmonic components of vibration, detector 17, third comparator 18 and third key 19. High authenticity of check is achieved by separate measurement of individual harmonic components of multicomponent vibration. Excess of maximum permissible value by any of them presents symptom of failure of gas-turbine engine. Self-test provided in device makes it possible to avoid false alarm related to increased vibration of engine if elements of device fail. EFFECT: increased authenticity of test of limit parameters of vibration of gas-turbine engines. 1 dwg