FIELD: machine building.
SUBSTANCE: turbine stage of turbomachine includes wheel with blades, which is rotated inside sealing ring (22) retained on housing (24), and heat protection ring plate installed between housing (24) and ring (22). Heat protection ring plate consists of several butted bent plates (56), which are fixed by means of bushings (70) on housing (24). Bent plates (56) include mounting holes for fastening bushings (70). Each bent plate includes a central hole in the middle, and a hole on each of its ends for erection of fastening bushings. Central hole in the middle of each bent plate has the size corresponding to transverse size of fastening bushing. Holes on edges of each plate have the size that is larger than transverse size of bushing (70).
EFFECT: method allows simple, effective and economic retardation of thermal characteristic of turbine housing, reduction of radial gap between heads of moving blades and sealing ring.
15 cl, 10 dwg
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