CASING FOR TURBINE ENGINE HAVING A COOLING UNIT

摘要

A turbine inner shell for a turbine engine includes one or more mounting grooves, each of which receives a fluid conduit. A temperature controlling fluid is circulated through fluid conduit to selectively heat or cool surrounding portions of the turbine inner shell, to thereby control the thermal growth of those portions of the turbine inner shell. This makes it possible to selectively control a clearance between the tips of rotating turbine blades and the surrounding shrouds of the turbine.

主权项

1. An inner shell for the turbine section of a turbine engine, comprising:
a plurality of arcuate casing portions that are configured to be attached to one another to form a generally cylindrical inner shell, wherein each arcuate casing portion includes:
at least one shroud hook portion that extends along an interior side of the arcuate casing portion in a circumferential direction, andat least one mounting groove that extends along the arcuate casing portion in the circumferential direction, wherein each at least one mounting groove is located adjacent to one of the at least one shroud hook portions; and at least one conduit having at least one internal passageway for a temperature controlling fluid, each conduit being mounted within one of the at least one mounting grooves, wherein the at least one conduit is configured to be inserted into a mounting groove.