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US 6,478,534 B2Granted
Turbine casing
AssigneeSiemnes Aktiengesellschaft
InventorsBoris Bangert, Edwin Gobrecht, Norbert Henkel, Uwe Zander
Life of this patent
Estimating the term…
Abstract
A turbine casing has an inner casing and an outer casing which surrounds the inner casing to form an intermediate space. In order to avoid a casing distortion, a forced flow of a medium located within the intermediate space is provided. A method is also described which relates to avoiding a temperature based casing distortion during the shut-down of a turbine.
Claims6
A turbine casing, comprising:
- an inner casing;
- an outer casing surrounding said inner casing and defining an intermediate space therebetween, said outer casing having a first opening and a second opening formed therein;
- and
- a circulating fan system connecting said first opening to said second opening so that a forced flow of a medium located within said intermediate space can be generated, said first opening, said second opening, said intermediate space, and said circulating fan system defining a closed circuit.
1 more element
A method for avoiding a casing distortion of a turbine casing when a turbine is shut down, which comprises the steps of:
- generating a forced flow of a medium in an intermediate space formed between an inner casing and an outer casing surrounding the inner casing, the intermediate space being part of a closed circuit and the forced flow evening out a temperature distribution in the turbine casing.
Dependencies are inferred from the claim text.