SYSTEM AND METHOD OF DETERMINING TOP-DEAD-CENTER (TDC) OF RECIPROCATING COMPRESSOR

摘要

Various embodiments include approaches for determining a top-dead-center (TDC) of a reciprocating compressor. In some cases, an apparatus includes: a pressure transducer configured to measure pressure fluctuations inside a compressor cylinder and convert the pressure fluctuations into an asynchronous waveform; and at least one computing device operably connected with the pressure transducer, the at least one computing device configured to: extract a data set representing piston angles over a single revolution of a piston within the compressor cylinder from the asynchronous waveform; remove data representing invalid piston angles from the data set to form a refined data set; determine an average piston angle for the single revolution from the refined data set; and adjust the refined data set to identify a top-dead-center (TDC) position of the piston within the compressor cylinder.

主权项

1. An apparatus comprising:
a pressure transducer configured to measure a pressure inside a compressor cylinder and convert the measured pressure into an asynchronous waveform; and at least one computing device operably connected with the pressure transducer, the at least one computing device configured to:
extract a revolution data set representing piston angles over a single revolution of a piston within the compressor cylinder from the asynchronous waveform;evaluate a property corresponding to the measured pressure at each piston angle of the revolution data set;determine whether each piston angle of the revolution data set is an invalid piston angle that does not correspond to a top-dead-center (TDC) position of the piston within the compressor cylinder based at least in part on a comparison of the evaluated property from the respective piston angle to a respective threshold;remove data representing invalid piston angles from the revolution data set to form a refined data set;determine an average piston angle for the single revolution from the refined data set;identify the average piston angle representing a data value of the refined data set as the TDC position of the piston within the compressor cylinder; andadjust the refined data set to order the data value of the TDC position of the piston within the compressor cylinder to be a first data value in the refined data set.