Gas turbine with axially mutually displaceable guide parts
AssigneeSiemens Aktiengesellschaft
InventorsChristian Scholz, Peter Tiemann
Life of this patent
Estimating the term…
Abstract
A gas turbine with axially mutually displaceable guide parts that compensates for differing amounts of thermal expansion, comprising guide parts which can be displaced with respect to one another in the axial direction and enclose a funnel-like gas duct from outside. In order to optimize a rotor blade tip gap, the invention proposes to displace at least one of the funnel-like guide parts under control by means of a motor. As a result of the axial displacement, because of the funnel-like shape of the guide parts, the width of the rotor blade tip gap is changed.
Claims14
A gas turbine comprising:
- a casing having a gas duct disposed therethrough;
- at least one group of stator blades disposed within said casing;
- at least one group of rotor blades coupled to a rotor movably disposed within said casing;
- at least one guide part disposed within said casing, said at least one guide part being axially displaceable with respect to said casing;
- at least one ring mounted on said at least one guide part, said at least one ring forming an outer jacket of said gas duct and being selectably spaced apart from said at least one group of rotor blades, said least one ring being constructed and arranged to move with respect to said at least one group of rotor blades in response to axial motion of said least one guide part;
- and
- a motor constructed and arranged to selectively move said at least one guide part axially with respect to said casing.
The gas turbine as claimed in claim I1, wherein said axial guide blocks are attached to said casing.
Dependencies are inferred from the claim text.