| 摘要 |
<p>1,039,076. Turbines. LINDE A.G. March 30, 1965 [April 15, 1964], No. 13355/65. Heading FIT. In a nozzle ring for a single or multi-stage, axial or radial-flow expansion turbine having means for varying the admission arc, the flow rate through the ring per unit of circumferential length thereof is non-uniform. A nozzle ring for a centripetal radial-flow turbine is divided into two sectors. Sector 2, Fig. 1 (not shown), extends over 30 per cent of the circumference and provides about double the throughput of sector 1 per unit length of circumference. The regulating means is associated with the nozzles 5 of the sector 2, so that flow through only a relatively small arc is controlled and the consequential ventilation losses are low. In sector 1 there are twenty-eight nozzles the blades 4 of which are set at an angle of 15 degrees. In sector 2 there are nine nozzles the blades 6 of which are set at an angle of 27 degrees. Special nozzles 7, 8 which take into account the change in blade angle are provided at the transitional points of the sectors The blades in sector 2 may be of greater axial length than those in sector 1.</p> |
