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US 7,008,182 B2Granted
Exhaust-gas-turbine casing
AssigneeABB Turbo Systems AG
InventorsAdrian Kopp, Josef Bättig, Marcel Meier
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AssigneeABB Turbo Systems AG
InventorsAdrian Kopp, Josef Bättig, Marcel Meier
Estimating the term…
The exhaust-gas turbine comprises a turbine wheel arranged on a shaft, a bearing casing for the bearing arrangement of the rotatable shaft, a gas-inlet casing supported on the bearing casing and concentrically surrounding the bearing casing in the supporting region, and a centering ring for centering the gas-inlet casing relative to the shaft mounted in the bearing casing. The centering ring and either the bearing casing or the gas-inlet casing comprise grooves and either radially or axially unidirectional centering lugs for engaging in the grooves. Due to the radially or axially unidirectional centering lugs with corresponding grooves, at least one of the connections between the bearing casing and the centering ring and the centering ring and the gas-inlet casing is not positive-locking, as a result of which any desired positioning of the gas-inlet casing relative to the bearing casing is made possible.
A turbine casing, comprising a bearing casing for the bearing arrangement of a rotatable shaft, a gas-inlet casing supported on the bearing casing and concentrically surrounding the bearing casing in the supporting region, and a centering ring for centering the gas-inlet casing relative to the shaft mounted in the bearing casing, the centering ring and either the bearing casing or the gas-inlet casing comprising intermeshing centering means, wherein the centering means comprise grooves and either radially or axially unidirectional centering lugs for engaging in the grooves, and wherein there is a frictional connection between the casing which does not comprise the centering means, that is to say either the gas-inlet casing or the bearing casing, and the centering ring.
Dependencies are inferred from the claim text.