An Analysis of the Influence of the Linear Hydraulic Drive Regulation Law on the Energy and Dynamic Characteristics of a Single-Stage Compressor Unit

The significant unevenness of the instantaneous power of a piston compressor unit during its operating cycle creates certain problems in the selection and operation of drive engines, which are usually solved by installing a flywheel. In single-stage compressor units with linear drive based on low-speed long-stroke stages, the amplitude change in the gas force during the operating cycle is significantly higher compared to similar compressor units. This leads to such an increase in the amplitude change of the instantaneous power of the drive, that the use of a flywheel becomes impractical. The article discusses the issues of ensuring the required dynamic and energy characteristics of single-stage compressor units with linear hydraulic drive by synthesizing the law of motion of the drive, the piston of which is rigidly connected to the piston of the compressor stage. Design methodology and the results of the computational parametric analysis are presented. The relevance of determining effective laws of motion of the drive as applied to compressor units with linear actuators based on low-speed long-stroke stages is confirmed.

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