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    • 12. 发明授权
    • Steam turbine singlet nozzle design for breech loaded assembly
    • 蒸汽轮机单线嘴设计用于后膛加载组件
    • US08684697B2
    • 2014-04-01
    • US12966476
    • 2010-12-13
    • Dominick Joseph WertherSteven Sebastian Burdgick
    • Dominick Joseph WertherSteven Sebastian Burdgick
    • F01D25/28
    • F01D9/042
    • A steam turbine nozzle airfoil with integral inner and outer sidewalls is engaged with an inner ring and an outer ring in a nozzle assembly. Previous designs required large clearances between radial surfaces to permit simultaneous circumferential loading of the inner and outer sidewall into the inner and outer rings. The inventive arrangement provides for breech loading of the inner sidewall into the inner ring which allows near line-to-line radial contact on the hooks between the rings and the integral sidewalls of the Singlet nozzle airfoil. Tighter radial clearance overcome problems with loose assembly such as movement during welding, gaps leading to stress risers and performance issues associated with nozzle throat control.
    • 具有整体内壁和外侧壁的汽轮机喷嘴翼型件与喷嘴组件中的内环和外环接合。 以前的设计需要径向表面之间的大间隙,以允许内侧壁和外侧壁同时周向地加载到内圈和外圈中。 本发明的装置提供了内侧壁进入内环的后膛加载,其允许在环之间的钩和单列喷嘴翼型的整体侧壁之间的近线对线的径向接触。 更紧密的径向间隙克服了松动组装的问题,例如焊接过程中的移动,导致应力梯度的间隙和与喷嘴喉部控制相关的性能问题。
    • 13. 发明申请
    • STEAM TURBINE SINGLET INTERFACE FOR MARGIN STAGE NOZZLES WITH PINNED OR BOLTED INNER RING
    • 蒸汽涡轮机接口,用于带刺或内嵌环的舷梯
    • US20120141260A1
    • 2012-06-07
    • US12958807
    • 2010-12-02
    • Steven Sebastian BurdgickDominick Joseph Werther
    • Steven Sebastian BurdgickDominick Joseph Werther
    • F01D9/02B23P15/04
    • F01D9/042
    • A steam turbine singlet nozzle airfoil with integral outer sidewall is engaged with an inner ring and an outer ring in a nozzle assembly. The interface of the outer sidewall with the outer ring may include a plurality of mechanical hooks on one or both of the upstream face and the outer radial face of the outer sidewall that engage with complimentary structures on the outer ring. The outer interface may further include low energy welds along limited distances of one or both of the upstream or downstream interface of the outer sidewall and the outer ring. An inner radial end of the singlet nozzle airfoil is pinned into position and fastened to the inner ring. Without a need for high heat welds, distortion of the airfoil and the steam flow path and the associated rework is eliminated and stage performance is improved.
    • 具有整体外侧壁的蒸汽轮机单线喷嘴翼型件与喷嘴组件中的内环和外环接合。 外侧壁与外环的界面可以包括在外侧壁的上游面和外径向面中的一个或两个上与外环上的互补结构接合的多个机械钩。 外界面还可以包括沿着外侧壁和外环的上游或下游界面中的一个或两个的有限距离的低能量焊缝。 单列喷嘴翼型的内径向端部被固定到位并紧固到内圈。 不需要高热焊接,消除了翼型件和蒸汽流动路径的变形以及相关的返工,并且提高了工作台性能。
    • 17. 发明授权
    • Film cooling for a closed loop cooled airfoil
    • 闭环冷却翼型薄膜冷却
    • US06506013B1
    • 2003-01-14
    • US09561865
    • 2000-04-28
    • Steven Sebastian BurdgickYufeng Phillip YuGary Michael Itzel
    • Steven Sebastian BurdgickYufeng Phillip YuGary Michael Itzel
    • F01D514
    • F01D5/186F01D5/188F05D2260/201F05D2260/202F05D2260/205F05D2260/2322
    • Turbine stator vane segments have radially inner and outer walls with vanes extending therebetween. The inner and outer walls are compartmentalized and have impingement plates. Steam flowing into the outer wall plenum passes through the impingement plate for impingement cooling of the outer wall upper surface. The spent impingement steam flows into cavities of the vane having inserts for impingement cooling the walls of the vane. The steam passes into the inner wall and through the impingement plate for impingement cooling of the inner wall surface and for return through return cavities having inserts for impingement cooling of the vane surfaces. At least one film cooling hole is defined through a wall of at least one of the cavities for flow communication between an interior of the cavity and an exterior of the vane. The film cooling hole(s) are defined adjacent a potential low LCF life region, so that cooling medium that bleeds out through the film cooling hole(s) reduces a thermal gradient in a vicinity thereof, thereby the increase the LCF life of that region.
    • 涡轮机定子叶片段具有径向的内壁和外壁,叶片在其间延伸。 内壁和外壁分隔开并具有冲击板。 流入外壁集气室的蒸汽通过冲击板,用于外壁上表面的冲击冷却。 废冲击蒸汽流入具有用于冲击冷却叶片壁的插入件的叶片的空腔中。 蒸汽进入内壁并通过冲击板,用于内壁表面的冲击冷却,并通过具有用于叶片表面的冲击冷却的插入件的返回腔返回。 至少一个薄膜冷却孔通过至少一个空腔的壁限定,用于腔的内部和叶片的外部之间的流动连通。 膜冷却孔邻近潜在的低LCF寿命区限定,使得通过膜冷却孔渗出的冷却介质降低其附近的热梯度,从而增加该区域的LCF寿命 。
    • 20. 发明授权
    • Partially turbulated trailing edge cooling passages for gas turbine nozzles
    • 用于燃气轮机喷嘴的部分紊流后缘冷却通道
    • US06190120B1
    • 2001-02-20
    • US09312427
    • 1999-05-14
    • Jonathan Carl ThatcherSteven Sebastian Burdgick
    • Jonathan Carl ThatcherSteven Sebastian Burdgick
    • F01D518
    • F01D5/187F05D2260/2212F05D2260/22141
    • A plurality of passages are spaced one from the other along the length of a trailing edge of a nozzle vane in a gas turbine. The passages lie in communication with a cavity in the vane for flowing cooling air from the cavity through the passages through the tip of the trailing edge into the hot gas path. Each passage is partially turbulated and includes ribs in an aft portion thereof to provide enhanced cooling effects adjacent the tip of the trailing edge. The major portions of the passages are smooth bore. By this arrangement, reduced temperature gradients across the trailing edge metal are provided. Additionally, the inlets to each of the passages have a restriction whereby a reduced magnitude of compressor bleed discharge air is utilized for trailing edge cooling purposes.
    • 沿着燃气轮机中的喷嘴叶片的后缘的长度,多个通道彼此间隔开。 通道与叶片中的空腔连通,用于使来自空腔的冷却空气通过通过后缘的尖端的通道进入热气体通道。 每个通道部分地是混浊的,并且在其后部包括肋,以提供邻近后缘的尖端的增强的冷却效果。 通道的主要部分是光滑的孔。 通过这种布置,提供了跨越后缘金属的降低的温度梯度。 此外,每个通道的入口具有限制,由此减小压缩机排放空气的大小用于后缘冷却目的。