Split ring for gas turbine casing

Details Split ring for gas turbine casing Split ring for gas turbine casing

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 25/24 (2006.01) F01D 5/14 (2006.01) F01D 9/04 (2006.01)

Patent

CA 2367570

A split ring is disposed on an inner wall of a gas turbine casing. The split ring is composed of a plurality of split segments that are arranged on the inner wall of the casing in circumferential direction. A predetermined clearance is formed between the inner face of a split segment and the rotor blade tips. The split segments are arranged so that a predetermined circumferential clearance is formed between the split segments in order to allow the thermal expansion of the segments. A circumferential end face located upstream side of the segments with respect to the direction of the rotor blade rotation is connected to the inner face by a transition face having a surface foamed as an inclined plane. The inclined plane prevents the swirl flow caused by the rotating rotor blade from impinging the upstream end face and, thereby, suppresses a temperature rise of the split segment at the upstream end face.

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