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1. 发明申请

US20040253100A1 Axial flow steam turbines 有权
标题翻译：轴流蒸汽轮机
公开(公告)号：US20040253100A1
公开(公告)日：2004-12-16
申请号：US10846891
申请日：2004-05-13
申请人： ALSTOM Technology Ltd
发明人： David Paul Blatchford , Richard Martin Bridge , Philip David Hemsley , Alan Hesketh , Adrian Lord
IPC分类号： F01D009/00
CPC分类号： F01D11/001 , F01D25/26
摘要： A drum-type rotor carries an annular row of moving blades having root portions held within a slot in the periphery of the rotor. A turbine casing surrounds the rotor and carries a static blade assembly with an annular row of static blades which, together with the annular row of moving blades, constitutes an impulse turbine stage. The static blade assembly has a radially inner static ring confronting a periphery of the rotor with a seal acting therebetween. The static blade assembly has an outer static ring which has a substantially greater thermal inertia and stiffness then the inner static ring and is capable of sufficient radial sliding relative to the casing so as to accommodate relative thermal expansion and contraction of the outer static ring and the turbine casing.
摘要翻译：滚筒式转子承载有一定数量的活动叶片，该叶片的根部保持在转子周边的槽内。涡轮机壳体围绕转子并且携带具有环形静止叶片的静态叶片组件，其与环形行动叶片一起构成脉冲涡轮机台。静态叶片组件具有面对转子周边的径向内部静止环，其间作用有密封件。静态叶片组件具有外部静态环，该外部静态环具有比内部静态环大得多的热惯性和刚度，并且能够相对于壳体具有足够的径向滑动，以适应外部静态环的相对热膨胀和收缩涡轮机外壳。

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