CNG Daughter Station

A: Traditional mechanical units rely on crankshafts, connecting rods, and crossheads that experience mechanical wear and higher vibration under fluctuating trailer pressures. The hydraulic-driven system uses a closed-loop hydraulic fluid column to directly drive the piston, delivering smoother stroke reversals, lower noise output (<75 dB), fewer moving wear parts, and higher tolerance to wet or varying inlet gas conditions.

A: The integrated unloading system and low-stage suction design allow the compressor to draw down tube trailers to a residual pressure of 0.5 MPa to 1.0 MPa, maximizing gas utilization and minimizing stranded residual fuel in empty trailers.

A: The automated PLC system continuously monitors high/low suction pressures, discharge temperature limits, hydraulic oil levels, vibration anomalies, and flame/gas concentrations. Upon detecting any out-of-spec parameter, the system instantly triggers emergency shut-down (ESD) solenoid valves and cuts power to the motor.

A: Each shipment includes complete Manufacturer Data Reports (MDR) containing material mill test certificates (MTC), ASME/PED pressure vessel compliance documentation, non-destructive testing (NDT) reports, electrical explosion-proof certificates, and factory acceptance test (FAT) performance curves.