公开(公告)号：US08262359B2

公开(公告)日：2012-09-11

申请号：US11972774

申请日：2008-01-11

申请人： Bryan Roy Palmer ,  David Littlewood ,  David Paul Blatchford ,  Peter Frank Critchley ,  Adrian Lord

发明人： Bryan Roy Palmer ,  David Littlewood ,  David Paul Blatchford ,  Peter Frank Critchley ,  Adrian Lord

IPC分类号： F01D5/22

CPC分类号： F01D9/041 ,  F01D25/246 ,  Y10T29/49229

摘要： A turbine diaphragm includes an annulus of static blades and an outer diaphragm ring surrounding the annulus of static blades and welded to the outer platforms. Each static blade has an inner platform, an aerofoil, and an outer platform. The inner platforms serve the function of an inner diaphragm ring, thereby reducing material and manufacturing costs. Furthermore, confronting edges of the inner platforms have an interference fit with each other and the aerofoils are in a state of torsional stress between the inner and outer platforms. The latter two features improve the dynamic characteristics of the diaphragm.

摘要翻译： 涡轮隔膜包括静态叶片的环形区域和围绕静态叶片的环状物并且焊接到外部平台的外部隔膜环。 每个静叶片都有一个内平台，一个机翼和一个外平台。 内平台用于内隔膜环的功能，从而降低材料和制造成本。 此外，内平台的相对边缘具有彼此的过盈配合，并且机翼处于内平台和外平台之间的扭转应力状态。 后两个特征提高了隔膜的动态特性。

公开(公告)号：US20080170939A1

公开(公告)日：2008-07-17

申请号：US11972774

申请日：2008-01-11

申请人： Bryan Roy Palmer ,  David Littlewood ,  David Paul Blatchford ,  Peter Frank Critchley ,  Adrian Lord

发明人： Bryan Roy Palmer ,  David Littlewood ,  David Paul Blatchford ,  Peter Frank Critchley ,  Adrian Lord

IPC分类号： F01D1/02 ,  B23P17/00

CPC分类号： F01D9/041 ,  F01D25/246 ,  Y10T29/49229

摘要： A turbine diaphragm includes an annulus of static blades and an outer diaphragm ring surrounding the annulus of static blades and welded to the outer platforms. Each static blade has an inner platform, an aerofoil, and an outer platform. The inner platforms serve the function of an inner diaphragm ring, thereby reducing material and manufacturing costs. Furthermore, confronting edges of the inner platforms have an interference fit with each other and the aerofoils are in a state of torsional stress between the inner and outer platforms. The latter two features improve the dynamic characteristics of the diaphragm.

摘要翻译： 涡轮隔膜包括静态叶片的环形区域和围绕静态叶片的环状物并且焊接到外部平台的外部隔膜环。 每个静叶片都有一个内平台，一个机翼和一个外平台。 内平台用于内隔膜环的功能，从而降低材料和制造成本。 此外，内平台的相对边缘具有彼此的过盈配合，并且机翼处于内平台和外平台之间的扭转应力状态。 后两个特征提高了隔膜的动态特性。