NOZZLE ADJUSTING MECHANISM

摘要

An adjusting mechanism for the annular inlet (12) of a radial inflow turbine employing a rotatably mounted adjusting ring (32) as one side of the annular inlet with cams and biased slots controlling primary vanes (40) located within the inlet. A clamping ring (22) which is capable of moving axially is located inwardly of the adjusting ring (32). A bearing piston ring (36) is mounted to the clamping ring (22) and supports the adjusting ring (32). The bearing ring (36) also provides some sealing capabilities. A sealing ring (28) between the clamping ring (22) and the housing ring (18) accommodates some small axial movement of the clamping ring (22) and seals against substantial pressure differential between the inlet and outlet of the nozzle itself. Pins (30) extend across the annular inlet (12) to pivotally mount the primary vanes (40).