| 摘要 |
<p>A compressor unit intended for delivering a pressurised gaseous medium at a varying outlet flow volume to a consumer with varying load demands and comprises one or more rotors (K; 10, 11) forming one or more compressor stages and arranged to operate continuously at high speed thereby delivering a certain outlet flow volume, a drive motor (M; 19), a drive line assembly (N; 17, 18) mechanically coupling the compressor rotor or rotors (K; 10, 11) to the drive motor (M; 19), and a waste flow circuit connected to the outlet end of the compressor stages and incorporating at least one power recovery turbine (TR; 22, 23) mechanically coupled to the drive line assembly (N; 17, 18), and one or more valves (V; 25, 34, 35) controlling the waste flow through the waste flow circuit in response to the actual load demand, wherein the power recovery turbine or turbines (TR; 22, 23) are arranged to deliver power back to the drive line or drive lines (N; 17, 18) at consumer load demands smaller than the certain outlet flow volume delivered by the compressor rotor or rotors (K; 10, 11).</p> |
