Nozzle adjusting mechanism
AssigneeAtlas Copco Rotoflow, Inc.
InventorsRobin M. Dakin, Behrooz Ershaghi
Life of this patent
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Abstract
An adjusting mechanism for the annular inlet of a radial inflow turbine employing a rotatably mounted adjusting ring as one side of the annular inlet with cams and biased slots controlling primary vanes located within the inlet. A clamping ring which is capable of moving axially is located inwardly of the adjusting ring. A bearing piston ring is mounted to the clamping ring and supports the adjusting ring. The bearing ring also provides some sealing capabilities. A sealing ring between the clamping ring and the housing accommodates some small axial movement of the clamping ring and seals against substantial pressure differential between the inlet and outlet of the nozzle itself. Pins extend across the annular inlet to pivotally mount the primary vanes.
Claims22
A nozzle adjustment mechanism for a radial inflow turbine having a housing, an annular inlet in the housing and primary vanes in the inlet pivotally mounted relative to the housing, comprising
- an adjusting ring on a first side of the primary vanes and rotatably mounted in the housing;
- a clamping ring on the first side of the primary vanes and axially slidably mounted in the housing;
- a sealing piston ring between the clamping ring and the housing.
A nozzle adjustment mechanism for a radial inflow turbine having a housing, an annular inlet in the housing and primary vanes in the inlet pivotally mounted relative to the housing, comprising
- an adjusting ring on a first side of the primary vanes and rotatably mounted in the housing;
- a clamping ring on the first side of the primary vanes and axially slidably mounted in the housing;
- a sealing piston ring between the clamping ring and the housing;
- a bearing piston ring supporting the adjusting ring, the bearing piston ring extending between the adjusting ring and the clamping ring.
A radial inflow turbine comprising
- a housing;
- an annular inlet in the housing;
- primary vanes in the inlet pivotally mounted relative to the housing;
- a nozzle adjustment mechanism including an adjusting ring on a first side of the primary vanes and rotatably mounted in the housing;
- a clamping ring on the first side of the primary vanes and axially slidably mounted in the housing;
- and
- a sealing piston ring between the clamping ring and the housing.
Dependencies are inferred from the claim text.