Shroud ring for use in a gas turbine engine

For a gas turbine engine of the type having a stator structure outward of a flow path for working medium gases, rotor structure inward of the flow path for working medium gases and an array of stator vanes extending inwardly across the flow path from the outward stator structure into proximity with the inward rotor structure, an improved shroud ring and vane assembly for supporting the inward ends of the vanes and a seal member radially outwardly of the rotor structure, wherein the improvement comprises:

• a first ring formed of a plurality of segments extending circumferentially, each segment spaced from an adjacent segment leaving a gap therebetween and each segment adapted to engage at least two stator vanes at the inward end of the stator vane to support the stator vanes in guided cantilever fashion, each segment being adapted by a hole at each vane to receive
• a second ring inwardly of the first ring, the second ring being formed of a plurality of segments, each segment slidably engaging in the circumferential direction a corresponding segment of the first ring and each segment having an inner wall extending inwardly of the corresponding segment of the first ring to cover at least one of said holes in the corresponding segment which adapt said corresponding segment of the first ring to receive the stator vanes for blocking the leakage of working medium gases between the vanes and the first ring;
• wherein the sliding engagement between the first ring and the second ring adapts the stator structure to position the second ring radially about the rotor structure in response to inward and outward movement of the stator structure.