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公开(公告)号：US06422807B1
公开(公告)日：2002-07-23
申请号：US09726213
申请日：2000-11-28
申请人： David Leach , Iain Robertson Kellock , Larry Wayne Plemmons , Cedric Chow , Brendan Francis Sexton , Mark Stewart Schroder
发明人： David Leach , Iain Robertson Kellock , Larry Wayne Plemmons , Cedric Chow , Brendan Francis Sexton , Mark Stewart Schroder
IPC分类号： F01D1124
摘要： A method of operating a gas turbine having inner and outer shells, with the inner shell being radially movable relative to rotor bucket tip passage in the inner shell for flowing a thermal medium. A pair of passage portions are formed in each of the aft and forward inner shell sections with axially communicating passageways between the passage portions. A thermal medium, preferably from an off-turbine site, is provided for flow through the second-stage aft inner shell section, along axial passageways along the mid-line of the inner shell to a first passage portion of the forward inner shell section. Cross-over paths flow the thermal medium from the first passage portions to second circumferentially extending passage portions of the forward inner shell section, in turn, in communication with axial passageways extending from the forward section to the aft section. A second pair of passage portions flow the thermal medium to an outlet in the aft section. By controlling the temperature of the thermal medium for flow through the aft and forward sections of the inner shell, the clearance between the shrouds and the tips of the buckets for at least the first and second stages of the turbine is controllably adjusted.
摘要翻译： 一种操作具有内壳和外壳的燃气轮机的方法，其中内壳可相对于内壳中的转子铲斗前端通道径向移动以使热介质流动。 一对通道部分形成在每个前后内壳部分中，在通道部分之间具有轴向连通的通道。 提供优选来自涡轮机外部位置的热介质，用于沿着沿着内壳的中线的轴向通道流到第二级后部内壳部分，以沿着前部内壳部分的第一通道部分流动。 交叉路径将热介质从第一通道部分流动到前内壳部分的第二周向延伸通道部分，然后与从前部延伸到后部的轴向通道连通。 第二对通道部分将热介质流到尾部的出口。 通过控制用于流过内壳的后部和前部的流体的热介质的温度，可控地调节涡轮机的至少第一级和第二级的护罩与铲斗顶端之间的间隙。
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公开(公告)号：US5685158A
公开(公告)日：1997-11-11
申请号：US414699
申请日：1995-03-31
申请人： Dean Thomas Lenahan , Poul D. Pedersen , Larry Wayne Plemmons , Christopher Charles Glynn , Frederick M. Miller , Curtis W. Stover
发明人： Dean Thomas Lenahan , Poul D. Pedersen , Larry Wayne Plemmons , Christopher Charles Glynn , Frederick M. Miller , Curtis W. Stover
CPC分类号： F02C7/185 , F01D5/081 , F04D29/321 , F04D29/584
摘要： In a gas turbine including a compressor having a bore and a rotor comprised of multiple stages extending between a first stage at a forward end of the compressor and a last stage at an aft end of the compressor, each stage including a rotor disk having a peripheral rim and multiple blades secured to the peripheral rim, a combustion system comprising a plurality of combustors utilizing discharge air from the compressor for combustion, and multiple turbine stages driven by combustion gases from the combustion system, the improvement comprising means for supplying cooling air at least to a peripheral rim of the last stage of the compressor.
摘要翻译： 在包括具有孔的压缩机和由压缩机的前端的第一级之间延伸的多级的压缩机和压缩机的后端的最后级的燃气轮机中，每个级包括具有外围的转子盘 边缘和多个叶片固定到外围边缘，燃烧系统包括利用来自压缩机的排出空气燃烧的多个燃烧器，以及由来自燃烧系统的燃烧气体驱动的多个涡轮机级，该改进包括用于至少提供冷却空气的装置 到压缩机的最后阶段的周边边缘。
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公开(公告)号：US06499950B2
公开(公告)日：2002-12-31
申请号：US09852673
申请日：2001-05-11
申请人： Fred Thomas Willett , Gary Michael Itzel , Dimitrios Stathopoulos , Larry Wayne Plemmons , Doyle C. Lewis
发明人： Fred Thomas Willett , Gary Michael Itzel , Dimitrios Stathopoulos , Larry Wayne Plemmons , Doyle C. Lewis
IPC分类号： F01D518
摘要： An open cooling circuit for a gas turbine bucket wherein the bucket has an airfoil portion, and a tip shroud, the cooling circuit including a plurality of radial cooling holes extending through the airfoil portion and communicating with an enlarged internal area within the tip shroud before exiting the tip shroud such that a cooling medium used to cool the airfoil portion is subsequently used to cool the tip shroud.
摘要翻译： 一种用于燃气轮机桶的敞开冷却回路，其中所述铲斗具有翼型部分和尖端护罩，所述冷却回路包括多个径向冷却孔，所述多个径向冷却孔延伸穿过所述翼型部分并且在出口之前与所述末端护罩内的扩大的内部区域连通 尖端护罩使得用于冷却翼型件部分的冷却介质随后用于冷却尖端护罩。
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