Method for deploying shroud segments of different thickness in a turbine engine

摘要

The disclosed method allocates segments (56) among various positions (1...36) in a turbomachinery case when the segments (56) to be allocated differ in radial dimension or thickness (t) and when the requirement for segment thickness varies around the circumference of the case. Segment thicknesses are preliminarily assigned to positions on the case without regard for whether or not the thickness of each assigned segment satisfies the thickness requirement of its assigned position. Each thickness is then compared to the requirement of its assigned position and thicknesses that fail to satisfy the minimum thickness requirement of their assigned positions are consigned to a pool of noncompliant thickness values, thereby vacating zero or more positions. Members of the pool are then systematically evaluated for suitability in the vacated positions. Ideally, the evaluation considers the seals in order of diminishing thickness and progresses in descending order through the thickness requirements. The method quickly identifies an optimum distribution of segments among the various positions in the case. <IMAGE>