Guide vane ring of a turbine of a gas turbine engine

摘要

PCT No. PCT/DE91/00458 Sec. 371 Date Jan. 30, 1992 Sec. 102(e) Date Jan. 30, 1992 PCT Filed May 28, 1991 PCT Pub. No. WO91/19078 PCT Pub. Date Dec. 12, 1991.A guide vane ring having guide vanes is provided on two rings which are arranged coaxially and radially at a distance from one another. These two rings are held on assigned housing sections which are subjected to thermally different expansions. One ring is rigidly connected with the guide vanes, and the other ring is connected with the free ends of the guide vanes by the compressive force of a tensioning element. In addition, the other ring is divided into several piston-ring-type elements which axially follow one another and which are each slotted approximately axially and form a cylindrical sliding surface for the whole free ends of the vanes. The tensioning element is arranged on the one group of assigned housing sections while forming a radial compressive force distributed uniformly on the elements.