公开(公告)号：US06827350B2

公开(公告)日：2004-12-07

申请号：US10283293

申请日：2002-10-30

申请人： Stephen Randolph Walcott ,  David Leach ,  Hamid Reza Sarshar

发明人： Stephen Randolph Walcott ,  David Leach ,  Hamid Reza Sarshar

IPC分类号： F16J1544

CPC分类号： F16J15/444 ,  F01D11/02 ,  F05D2240/56 ,  F16J15/3288

摘要： A steam gland includes a steam inlet scroll and an extraction scroll axially spaced from one another defining high and low pressure regions. A seal body is disposed between the regions and includes a pair of brush seals axially spaced from one another. Intermediate the brush seals is a honeycomb seal. The hybrid brush seal/honeycomb seal combination minimizes steam leakage between the high and low pressure regions and eliminates the possibility of heat induced damage to the rotor while optimizing seal leakage performance.

摘要翻译： 蒸汽压盖包括蒸汽入口涡卷和彼此轴向间隔开定义高压和低压区域的抽出涡旋。 密封体设置在这些区域之间，并且包括彼此轴向间隔开的一对刷子密封件。 中间的刷密封是蜂窝密封。 混合刷密封/蜂窝密封组合可最大限度地减少高压区域和低压区域之间的蒸汽泄漏，并消除热损伤转子的可能性，同时优化密封泄漏性能。