초록 ▼

A seal assembly and a rotary machine, such as a steam turbine, containing the seal assembly. A casing circumferentially surrounds a rotor and includes a circumferential channel open to the rotor. Seal segments are circumferentially arrayed in the channel and are movable between radially inward and o

A seal assembly and a rotary machine, such as a steam turbine, containing the seal assembly. A casing circumferentially surrounds a rotor and includes a circumferential channel open to the rotor. Seal segments are circumferentially arrayed in the channel and are movable between radially inward and outward positions. Circumferentially adjacent seal segments have circumferentially opposing surface grooves. A resilient and imperforate member is engaged in the grooves of circumferentially-adjacent seal segments circumferentially urging apart such segments and providing sealing between such segments.

대표청구항 ▼

[ What is claimed is:] [1.] A seal assembly for a rotary machine, said rotary machine including a rotor and a casing, said rotor having a generally longitudinally-extending axis, said casing generally coaxially aligned with said axis, said casing circumferentially surrounding and radially spaced apa

[ What is claimed is:] [1.] A seal assembly for a rotary machine, said rotary machine including a rotor and a casing, said rotor having a generally longitudinally-extending axis, said casing generally coaxially aligned with said axis, said casing circumferentially surrounding and radially spaced apart from said rotor, said casing including an inner circumferential channel generally coaxially aligned with and open to said rotor, and said seal assembly comprising:a) a plurality of seal segments disposable in a circumferential array in said channel; and, when so disposed, said plurality of seal segments movable between a radially inward position proximate said rotor and a radially outward position, and wherein circumferentially-adjacent seal segments have circumferentially-opposing and generally matching surface grooves, andb) a resilient and imperforate member engageable in said grooves of said circumferentially-adjacent seal segments and, when so engaged, said member circumferentially urging apart said circumferentially-adjacent seal segments,wherein, when so disposed, said seal segments have a radial extent, and wherein said grooves of said circumferentially-adjacent seal segments extend a radial distance equal to at least three-quarters of said radial extent of said seal segments.