METHOD FOR MONITORING TECHNICAL CONDITION OF SHIP'S PISTON COMPRESSOR IN OPERATION Russian patent published in 2023 - IPC G01L5/16 B63J99/00 

FIELD: vessel construction.

SUBSTANCE: system of ship support equipment, in particular to means for measuring vibroacoustic parameters of support equipment, and can be used to assess the technical condition of auxiliary mechanisms, as well as to establish the causes and levels of vibration values of ship piston compressors in operation. The claimed method for monitoring the technical condition of a ship's piston compressor in operation is to receive and process a vibration signal in the vertical, axial, transverse directions, and vibration velocity values from sensors. In this case, sensors are installed on the housing in the places of the crankshaft bearings and legs of the piston compressor and its drive electric motor, mounted on soft supports in the amount of two to six sensors, signals are received in the vertical, axial, transverse directions from all sensors, which are converted into narrow-band spectra of vibration velocity from a sensor installed in the amount of one to two on the housing in the places of the crankshaft bearings. Then they are converted in all indicated directions into narrow-band spectra of vibration velocity and the vibration velocity values are recorded within the limits in which the vibration parameters of the crankshaft bearings of the piston compressor are located, from sensors installed in the amount of two to four, on the feet of the piston compressor and its drive electric motor, they are converted in all indicated directions into narrow-band spectra of vibration velocity and record the vibration velocity values, within which the vibration parameters of the rotation frequency and its harmonics of the piston compressor are located. At the same time, if the recorded value of vibration parameters in any of the specified directions from at least one sensor exceeds the limits of operational vibration levels, then reduce the load on the piston compressor in steps of 10-15% of the existing load until the recorded values of vibration parameters in all specified directions from all sensors will be within the operating vibration levels, while the measurement is carried out after 1-2 minutes and the measurement is repeated after changing the load on the piston compressor, if the load on the piston compressor has been changed.

EFFECT: increase in the reliability of a marine piston compressor in operation in terms of vibration parameters.

1 cl, 4 dwg