1. Introduction
The main engine of the liquid-driven hydrogen compressor drives the piston to reciprocate through the motor to compress hydrogen. The compressor cylinder is uniquely designed, using a three-stage double-acting compression form and a single-stage double-acting compression cylinder in series to form a four-stage compression. The single-stage compression ratio is low, the exhaust temperature is low, and the compression efficiency is high. The cylinder adopts a special structural isolation method to eliminate oil-hydrogen contact. The unit is cooled by water, and the chiller is external.
2. Compressor unit use conditions
(1) Compression medium: standard high-purity hydrogen.
(2) Replacement, purge, instrument air nitrogen pressure: 0.6~0.8MPa.
(3) Voltage: 415V±5%, 50HZ.
(4) Basic requirements: The size of the skid platform is ≥6900X2700 (unit: mm), the platform surface unevenness is ≤±5mm and the levelness is ≤±5°.
(5) Maintenance space is reserved on both sides of the compressor door, with a width of not less than 2.5.
3. Main features and advantages of the compressor
(1) The compression cylinder adopts a multi-stage structure to form a three-stage compression, connected in series with a set of single-stage compression cylinders. It has high integration and small footprint.
(2) The wearing parts of the hydraulic piston compressor are sealing rings. The number of wearing parts is small, the failure rate is low, and the reliability is high.
(3) The compressor adopts a four-stage compression form.
(4) The hydraulic compressor does not need to be unloaded and can be started at any time. The life of wearing parts will not be affected by frequent start and stop.
(5) The oil and gas cylinders of the compressor are separated, and the compression process will not contaminate the compressed medium. The oil and gas isolation chamber structure ensures that even if the sealing ring is damaged, hydrogen will not come into contact with the oil, ensuring the purity of the outlet gas. Since the compressor does not have components such as crankshafts and connecting rods, there is no need for a matching lubrication system.
(6) The hydraulic piston compressor has a low operating linear speed and a low switching frequency. Compared with other types of reciprocating machines, hydraulic piston compressors have extremely low reciprocating frequencies and piston linear speeds, so the service life of seals and air valves is long.
(7) The cylinder piston of the compressor is driven by a hydraulic system, with low vibration and noise: the motor drives the high-pressure oil pump to act on the compression cylinder, the motor load is stable, the working condition is stable, and the working life of the compression cylinder and the motor is extended.
(8) The compressor is safe and reliable. The electrical components in the skid are explosion-proof and a reliable electrostatic grounding system is set. In terms of overpressure protection, the unit is equipped with a three-level outlet pressure protection to prevent overpressure. A gas detector is set in the skid and linked with the compressor ESD system. In an emergency, it automatically cuts off the power and cuts off the gas source. The compressor control system adopts PLC full-automatic control. The control panel can display or query the working status of the compressor and has fault alarm and automatic diagnosis functions. The operation of the compressor is fully automatically controlled without manual operation. The control part is integrated into the compressor skid, and the explosion-proof level is Ex dIICT4.
(9) The full water-cooled structure has higher heat exchange efficiency, low exhaust temperature, and low system operating temperature.
Bluesky hydrogenation machine controller function introduction