What is a hydrogen compressor?

What is a hydrogen compressor?

Hydrogen compressor is a pressurization equipment specially designed for hydrogen medium. Its core function is to pressurize low-pressure hydrogen to high pressure, and realize hydrogen transportation, filling, energy storage and chemical reaction gas supply. It belongs to the core equipment of hydrogen energy industry chain.

Core special requirements include:

Explosion-proof machine: the explosion-proof motor and explosion-proof control cabinet of the whole machine meet the highest explosion-proof grade of Ex d IIC T4 hydrogen, and prevent electric spark from detonating hydrogen mixture.

Super leak-proof seal: hydrogen molecules are extremely small and easy to penetrate the gap. It adopts metal hard seal, multi-layer packing and diaphragm isolation structure, and is equipped with hydrogen leakage detection and alarm.

Oil-free/low-oil structure: hydrogen is easy to spontaneously ignite when it meets the high temperature of lubricating oil, and the high-purity scene must have oil-free structure; It is forbidden for ordinary lubricating oil to contact with hydrogen.

Anti-hydrogen embrittlement material: hydrogen will penetrate into steel under high pressure, resulting in cracking. The valve body, cylinder body and pipeline are all made of stainless steel/alloy steel specially used for anti-hydrogen embrittlement.

Safety interlock system: overpressure shutdown, overtemperature protection, hydrogen leakage alarm, nitrogen replacement purging interface, pipeline air can be replaced before starting to avoid mixed explosion of hydrogen and oxygen.

Generally speaking, hydrogen compressor is an explosion-proof special equipment specially used to pressurize hydrogen, which can store, transport or fill low-pressure hydrogen under pressure; Because hydrogen is flammable, explosive, easy to leak and corrode steel, it is completely different from ordinary air compressors in structure, including diaphragm, piston and screw, and is widely used in hydrogen-related scenes such as hydrogen refueling stations, hydrogen plants, chemicals and semiconductors.