High-speed direct-connection double-drive coaxial unit

The utility model provides a coaxial unit which is more efficient, lower in failure rate and more compact in structure. The high-speed direct-connection double-drive coaxial unit comprises a high-speed motor, a compressor, a clutch and an energy recovery turbine. Wherein the high-speed motor and the energy recovery turbine are installed at the two ends of the compressor respectively, the rotatingspeed of the high-speed motor is equal to that of the compressor, and the rotating speed range is 3000 r/min-8000 r/min; the high-speed motor is directly connected with the compressor through a coupler, and the energy recovery turbine is connected with the compressor through a clutch. According to the utility model, an accelerating device in an electric dragging compressor unit is omitted, and theelectric dragging compressor unit is directly connected with the compressor through the high-speed motor, so that the electric energy conversion efficiency and the unit operation reliability are improved, and meanwhile, the e