350-700bar Mobile Hydrogen Refueling Station for EU Market

350-700bar Mobile Hydrogen Refueling Station for EU Market

• The hydraulic-driven compressor for hydrogen refueling stations produced by Qingdao Compress Energy Technology Co., Ltd. uses an electric motor to drive a hydraulic oil pump, which in turn drives the piston to reciprocate and compress hydrogen gas.
• The compressor cylinder features a unique design with a three-stage compression configuration, offering low single-stage compression ratio, low discharge temperature, and high compression efficiency.
• The cylinder employs a specially structured isolation method that completely prevents contact between oil and hydrogen gas. The unit is cooled using water cooling with an external chiller.
• Designed as a skid-mounted system, the compressor offers high automation, simple operation, safe and reliable performance, and convenient maintenance.

Key features

• The compression cylinder is composed of a multi-stage structure, with high integration and small floor space.
• The wear parts of the liquid-driven compressor are the sealing ring, which have a small number, low failure rate and high reliability.
• The compressor adopts a three-stage compression form, with a low single-stage compression ratio, high compression efficiency, low maximum operating temperature, and high compressor safety.
• The hydraulic compressor does not require unloading and can be started at any time: Due to the hydraulic drive of the compressor cylinder, there is no need to unload and exhaust during startup, and it can be started at any time, adapting to frequent start-stop conditions. It can be started in a cold state, saving energy, improving the working efficiency of the compressor, and will not affect the lifespan of the wear parts due to frequent start-stop.
• The oil and gas cylinders of the compressor are separated, and the piston of the cylinder is driven by the hydraulic system. The compression process does not pollute the compressed medium. Both the gas chamber seal and the oil chamber seal adopt multi-stage sealing, and a special form of oil-gas isolation cavity is used, completely eliminating the contact between oil and gas. The structure of the oil-gas isolation cavity ensures that even if the sealing ring is damaged, hydrogen gas will not come into contact with oil, ensuring the purity of the outgoing gas. Since the compressor does not have components such as crankshafts and connecting rods, there is no need for a lubrication system.
• The operating linear speed of the liquid-driven compressor is low, and the reversing frequency is low. Compared with other types of reciprocating machines, the reciprocating frequency and piston linear speed of the liquid-driven compressor are extremely low, so the sealing and valve service life are long.
• The piston of the compressor cylinder is driven by the hydraulic system, with small vibration and low noise: The motor drives the high-pressure oil pump, which then acts on the compressor cylinder body. The motor load is stable, and the working condition is stable, prolonging the working life of the compressor cylinder and the motor.
• The compressor is safe and reliable. The electrical components inside the skid are designed with explosion-proof features, and a reliable static electricity grounding system is set up. In terms of overpressure protection, the unit is equipped with three-stage outlet pressure protection to prevent overpressure situations.
• A gas detector is set up inside the skid, and it is linked with the compressor ESD system, automatically stopping in emergency situations and cutting off the gas source.
• The compressor uses multi-stage compression, reducing the single-stage compression ratio and the exhaust temperature.
• The compressor control system uses PLC control, and the control panel can display or query the working conditions of the compressor and has fault alarm and automatic diagnosis functions. The control part is integrated in the compressor skid, with an explosion-proof rating of Ex dIICT4.
• The full water-cooled structure has a higher heat exchange efficiency, lower exhaust temperature, and lower system operating temperature.

Contact us

• Interested? Please contact Qingdao Compress Energy Technology Co., Ltd by filling in the RFQ or Inquiry form.