摘要:
A gas turbine engine (10) is disclosed having a turbine (16), one or more hydrocarbon gas combustors (34), and a compressor (12). The compressor (12) has a rotor assembly with one or more rotor blade rows (18) extending radially outward from an inner wheel disk (54). The compressor (12) also has a stator assembly with one or more stator vane rows (24) extending radially inward from an inner casing (46) and positioned between adjacent rotor blade rows (18). The inner casing (46) extends circumferentially around the rotor assembly and is constructed from at least one low-alpha metal alloy.
摘要:
This disclosure provides systems and methods for reducing stress in vane shroud assemblies 100 by defining a gap between adjacent portions of the airfoil 120 and the shroud 130 whereby stress from the securing force is relieved in a portion of the shroud. The airfoil has a distal end with a contact surface and a tenon 422. The shroud has a contact surface with the airfoil and accommodates the tenon. An attachment device provides the securing force between the airfoil and shroud contact surfaces through the shroud and the gap serves to reduce stress on the shroud.