Helical lobe compressor for hydrogen water spray cooled

The invention provides a water-spray cooling type hydrogen gas screw compressor, including cylinder body, gas suction end seat, gas exhaust end seat, open screw, secret screw, synchronous gear, sealing component and water spray mechanism. The sealing component includes a labyrinth sealing structure, a band buffer gas sealing structure and a floating ring sealing structure installed in turn at two shaft ends of the two screws. The water spray mechanism is installed on the cylinder body. It can reduce the raised temperature with hydrogen gas compression and controls the gas temperature at about 70 deg.C; the sprayed-in water can form a liquid membrane in the gap between the two screws and on their gas exhaust end surfaces, thus playing the role in sealing, improving the air tightness and inner compression volumetric efficiency of the compressor, and simultaneously strengthening the safety of the compressor. It can be widely applied to the hydrogen gas compressors in petrochemical enterprises.