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1. 发明授权

US4834614A Segmental vane apparatus and method 失效
标题翻译：分段叶片装置及方法
公开(公告)号：US4834614A
公开(公告)日：1989-05-30
申请号：US268139
申请日：1988-11-07
申请人： Joseph Davids , George J. Silvestri, Jr.
发明人： Joseph Davids , George J. Silvestri, Jr.
IPC分类号： B23K33/00 , B23P15/00 , F01D9/04
CPC分类号： F01D9/044 , B23K33/00 , B23P15/006
摘要： A segmented turbine vane nozzle assembly for a steam turbine has an inner ring and a plurality of vanes with each vane having a base end and a profile tip and a profile tip trailing edge extension portion and each vane base end being attached to the inner ring and extending radially therefrom. An annular outer ring has a plurality of arcuate grooves of predetermined depth therein. The outer ring is mounted concentrically with the inner ring. Each vane profile tip trailing edge extension portion extends into one outer ring arcuate groove. Each of the vane profile tips leading edge portion is attached to the outer ring so that a vane assembly is formed without welding the profile tip trailing edge of the vanes. This reduces flow leakage and the formation of erosion caused by the formation and release of large droplets. A method of making a segmented turbine vane nozzle assembly is also disclosed.
摘要翻译：一种用于蒸汽涡轮机的分段涡轮叶片喷嘴组件具有内环和多个叶片，每个叶片具有基端和轮廓末端和轮廓末端后缘延伸部分，每个叶片基端附接到内环，从其径向延伸。环形外圈在其中具有预定深度的多个弓形凹槽。外圈与内圈同心安装。每个叶片轮廓尖端后缘延伸部分延伸到一个外环弓形凹槽中。每个叶片轮廓尖端前缘部分附接到外环，使得叶片组件形成而不焊接叶片的轮廓末端后缘。这样可以减少流量泄漏和由大液滴的形成和释放引起的侵蚀的形成。还公开了一种制造分段涡轮叶片喷嘴组件的方法。

2. 发明授权

US5112187A Erosion control through reduction of moisture transport by secondary flow 失效
标题翻译：通过二次流减少水分运输进行侵蚀控制
公开(公告)号：US5112187A
公开(公告)日：1992-05-12
申请号：US747406
申请日：1991-08-19
申请人： Joseph Davids , George J. Silvestri, Jr.
发明人： Joseph Davids , George J. Silvestri, Jr.
IPC分类号： F01D5/14 , F01D25/32
CPC分类号： F01D5/145 , F01D25/32 , Y10S415/914
摘要： A steam turbine including a plurality of rows of rotating blades interspersed with a plurality of rows of stationary blades incorporates a water barrier extending substantially across a suction side of each blade of at least one of the rows of stationary blades. Each of the water barriers is positioned relatively near a radially outer end of a respective blade and approximately parallel to an end wall of the steam turbine. Moisture which accumulates on the radially outer end of the stationary blades is trapped between the end of the blade and the water barrier. Any water which attempts to flow over the top of the barrier is picked up by the steam flow and broken into small droplets while being rapidly accelerated. Water held behind the barrier and which flows off the trailing edge of the stationary blade only impacts a limited extent of the following rotating blade row. Water collection schemes may be utilized to collect the moisture trapped above the barrier and transfer the moisture through the turbine end wall to appropriate feedwater reheaters.
摘要翻译：包括散布有多排固定叶片的多排旋转叶片的蒸汽轮机包括基本上横跨至少一行固定叶片的每个叶片的吸力侧延伸的防水壁。每个防水挡板相对靠近相应叶片的径向外端并且大致平行于蒸汽涡轮机的端壁定位。积聚在固定叶片的径向外端上的水分被捕获在叶片的端部和水屏障之间。试图流过障碍物顶部的任何水被蒸汽流吸收并迅速加速而分解成小液滴。保持在挡板之后并且从固定叶片的后缘流出的水只会影响以下旋转叶片排的有限程度。可采用集水方案来收集阻挡层上方的水分，并将水分通过涡轮机端壁转移到适当的给水再热器。

3. 发明授权

US4958985A Performance low pressure end blading 失效
标题翻译：性能低压端板
公开(公告)号：US4958985A
公开(公告)日：1990-09-25
申请号：US317495
申请日：1989-03-01
申请人： Joseph Davids , George J. Silvestri, Jr.
发明人： Joseph Davids , George J. Silvestri, Jr.
IPC分类号： F01D9/02 , F01D5/14
CPC分类号： F01D5/142 , F05D2200/261 , Y10S415/914
摘要： A method for optimizing thermodynamic performance of a steam turbine by matching a last stage blade flow area to condenser pressure by adjusting blade angular orientation to set gaging to an optimum value. The method is also used to correct incidence by setting blade angular orientation upstream of the last blade row.
摘要翻译：一种用于通过调整叶片角度方向来将最后一级叶片流动面积与冷凝器压力相匹配来优化蒸汽轮机的热力学性能的方法，以将计量设置为最佳值。该方法还用于通过将刀片角度方向设置在最后一个刀片行的上游来校正入射。

4. 发明授权

US4557113A Single low pressure turbine with zoned condenser 失效
标题翻译：单低压汽轮机，带分区冷凝器
公开(公告)号：US4557113A
公开(公告)日：1985-12-10
申请号：US621323
申请日：1984-06-15
申请人： George J. Silvestri, Jr. , Joseph Davids
发明人： George J. Silvestri, Jr. , Joseph Davids
IPC分类号： F01K9/00 , F01D1/04 , F01D25/30 , F01K11/02 , F28B1/00 , F28B7/00
CPC分类号： F01K11/02
摘要： A low pressure double flow stream turbine is connected to a condenser and partition plates are disposed within the condenser and turbine to flow to two separate chambers and cooling water flows in series through tubes in the separate chambers producing different back pressures, the last row of rotating blades which discharge into the lower pressure chamber are longer than the last row of blades which discharge into the higher pressure chamber resulting in an improvement in the heat rate of the turbine.
摘要翻译：低压双流流涡轮机连接到冷凝器，隔板设置在冷凝器和涡轮机内，以分流到两个独立的室，并且冷却水通过分离室中的管串联连通，产生不同的背压，最后一排旋转排放到较低压力室中的叶片比排入高压室的最后一排叶片长，导致涡轮机的热量提高。

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