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US 11,959,389 B2Granted
Turbine shroud segments with angular locating feature
AssigneePratt & Whitney Canada Corp.
InventorsJocelyn Bisson, Guy Lefebvre
Life of this patent
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Abstract
A turbine shroud segment has a shroud body including a platform having forward and aft hooks extending from a radially outer surface of the platform for engagement with a shroud support structure of a turbine support case. A pin receiving hole is defined in the shroud body. An anti-rotation pin is engaged in the pin receiving hole. The anti-rotation pin projects outwardly from the pin receiving hole for engagement with a corresponding anti-rotation abutment on the shroud support structure.
Claims13
A turbine section comprising:
- a turbine support case extending circumferentially around an axis;
- a circumferential array of turbine blades disposed within the turbine support case for rotation about the axis;
- and
- a circumferentially segmented turbine shroud mounted inside the turbine support case about the circumferential array of turbine blades, the circumferentially segmented turbine shroud including a plurality of shroud segments disposed circumferentially adjacent to one another, each shroud segment having a body including:
- a platform having a radially inner surface facing towards the axis and a radially outer surface facing away from the axis;
- and
- a forward hook and an aft hook of the platform extending radially outwardly from the radially outer surface of the platform for engagement with a shroud support structure of the turbine support case;
- wherein one or more of the plurality of shroud segments have a pin receiving hole defined in the body thereof;
- and
- wherein an anti-rotation pin has a shank portion securely engaged in the pin receiving hole and a head portion loosely received in a localisation slot defined in a distal end of a rail portion of an aft hook of the shroud support structure, the head portion positioned radially between the radially outer surface of the platform and an axially extending rail portion of the aft hook of the platform.
7 more elements
A turbine shroud assembly comprising:
- a turbine support case extending circumferentially around an axis;
- and
- a circumferentially segmented turbine shroud supported by the turbine support case, the circumferentially segmented turbine shroud including a plurality of shroud segments, each shroud segment having:
- a platform;
- a forward hook and an aft hook of the platform projecting radially outwardly from a radially outer surface of the platform, each hook having a radially extending leg portion and an axially extending rail portion;
- a pin receiving hole extending through the radially extending leg portion of the aft hook;
- and
- a pin removably installed in the pin receiving hole, the pin having a shank portion securely engaged in the pin receiving hole and a head portion loosely received in a localisation slot defined in a distal end of a rail portion of an aft hook of a shroud support structure of the turbine support case, the head portion positioned radially between the radially outer surface of the platform and the axially extending rail portion of the aft hook of the platform.
5 more elements
Dependencies are inferred from the claim text.