FIELD: machine building.
SUBSTANCE: invention relates to machine building, specifically to compressor equipment, and can be used for injection of gas under high pressure. Compressor unit comprising at least two multi-stage compressors, low pressure zone and high pressure zone which are connected via a gas line. Pressure zone has at least one piston-driven compressor and low pressure zone has at least one low pressure compressor with piston displacer. Multistage compressor drive is designed as a hydraulic cylinder connected by a common piston to piston-driven compressors of low-pressure zone and high pressure zone. Gas input of high pressure compressor is connected to output of low pressure compressor, output is connected to input of gas cavity of next compression stage. Control of synchronous reciprocating pistons of hydraulic drive is carried out by means of limit switches connected to controller.
EFFECT: broader functionality, simplified design and improved operational reliability.
2 cl, 3 dwg
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