초록 ▼

A steam turbine having a shaft and a first (e.g., high-pressure) turbine section. A first embodiment also includes a first bearing longitudinally spaced apart from the first turbine section and further includes a first brush-seal assembly, having bristles, longitudinally positioned between the first

A steam turbine having a shaft and a first (e.g., high-pressure) turbine section. A first embodiment also includes a first bearing longitudinally spaced apart from the first turbine section and further includes a first brush-seal assembly, having bristles, longitudinally positioned between the first turbine section and the first bearing and radially positioned proximate the shaft. The steam turbine is devoid of any backup seal to the bristles. In a second embodiment, a second brush seal assembly is positioned between the first and second (e.g., intermediate-pressure) turbine sections which lack any intervening bearing.

대표청구항 ▼

[ What is claimed is:] [1.] A steam turbine comprising:a) a steam-turbine shaft having a generally longitudinally-extending axis;b) a first turbine section having rotatable steam-turbine blades fixedly attached to, and radially extending from, said shaft, wherein steam enters said first turbine sect

[ What is claimed is:] [1.] A steam turbine comprising:a) a steam-turbine shaft having a generally longitudinally-extending axis;b) a first turbine section having rotatable steam-turbine blades fixedly attached to, and radially extending from, said shaft, wherein steam enters said first turbine section at a first pressure;c) a second turbine section longitudinally spaced apart from said first turbine section without an intervening bearing and having rotatable steam-turbine blades fixedly attached to, and radially extending from, said shaft, wherein steam enters said second turbine section at a second pressure which is different from said first pressure; andd) a second brush-seal assembly longitudinally disposed between said first and second turbine sections and radially disposed proximate said shaft, wherein said second brush seal assembly includes a plurality of bristles, and wherein said steam turbine is devoid of any backup seal to said bristles of said second brush seal assembly.