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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
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。
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公开(公告)号：US08714915B2
公开(公告)日：2014-05-06
申请号：US12952730
申请日：2010-11-23
IPC分类号： F03B11/08
CPC分类号： F01D25/00 , F05D2260/607
摘要： An exemplary axial flow steam turbine is disclosed which includes a motor, a turbine casing and at least first and second turbine stages, with the second turbine stage being located adjacent to and downstream from the first turbine stage. A radially outer static diaphragm ring of the second turbine stage includes an annular axial extension extending in an upstream axial direction and carrying a circumferential tip sealing device which cooperates with shrouds of a circumferential row of moving blades of the first turbine stage. An upstream end of the annular axial extension is axially spaced from a radially outer static diaphragm ring of the first turbine stage such that a circumferential passage is defined between the upstream end of the annular axial extension and the radially outer static diaphragm ring of the first turbine stage. Solid particles are diverted from steam flow by a circumferential passage during operation.
摘要翻译： 公开了一种示例性的轴流蒸汽涡轮机，其包括电动机，涡轮机壳体和至少第一和第二涡轮机级，其中第二涡轮级位于第一涡轮级的邻近和下游。 第二涡轮级的径向外部静态隔膜环包括在上游轴向方向上延伸的环形轴向延伸部，并且承载圆周末端密封装置，该周向末端密封装置与第一涡轮平台的周向行动叶片的护罩配合。 环形轴向延伸的上游端与第一涡轮级的径向外部静态隔膜环轴向间隔开，使得圆周通道限定在环形轴向延伸的上游端与第一涡轮的径向外部静态隔膜环之间 阶段。 在运行期间，固体颗粒通过圆周通道从蒸汽流中转移。
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公开(公告)号：US20110123313A1
公开(公告)日：2011-05-26
申请号：US12952730
申请日：2010-11-23
IPC分类号： F04D29/70
CPC分类号： F01D25/00 , F05D2260/607
摘要： An exemplary axial flow steam turbine is disclosed which includes a motor, a turbine casing and at least first and second turbine stages, with the second turbine stage being located adjacent to and downstream from the first turbine stage. A radially outer static diaphragm ring of the second turbine stage includes an annular axial extension extending in an upstream axial direction and carrying a circumferential tip sealing device which cooperates with shrouds of a circumferential row of moving blades of the first turbine stage. An upstream end of the annular axial extension is axially spaced from a radially outer static diaphragm ring of the first turbine stage such that a circumferential passage is defined between the upstream end of the annular axial extension and the radially outer static diaphragm ring of the first turbine stage. Solid particles are diverted from steam flow by a circumferential passage during operation.
摘要翻译： 公开了一种示例性的轴流蒸汽涡轮机，其包括电动机，涡轮机壳体和至少第一和第二涡轮机级，其中第二涡轮级位于第一涡轮级的邻近和下游。 第二涡轮级的径向外部静态隔膜环包括在上游轴向方向上延伸的环形轴向延伸部，并且承载圆周末端密封装置，该周向末端密封装置与第一涡轮平台的周向行动叶片的护罩配合。 环形轴向延伸的上游端与第一涡轮级的径向外部静态隔膜环轴向间隔开，使得圆周通道限定在环形轴向延伸的上游端与第一涡轮的径向外部静态隔膜环之间 阶段。 在运行期间，固体颗粒通过圆周通道从蒸汽流中转移。
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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。
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