Steam turbine having a brush seal assembly

摘要

A steam turbine (10) having a shaft (12) and a first (e.g., highpressure) turbine section (16). A first embodiment also includes a first bearing (20) longitudinally spaced apart from the first turbine section and further includes a first brush-seal assembly (22), 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.