公开(公告)号：US5277549A

公开(公告)日：1994-01-11

申请号：US851710

申请日：1992-03-16

申请人： Shun Chen ,  Jurek Ferleger

发明人： Shun Chen ,  Jurek Ferleger

IPC分类号： F01D5/14

CPC分类号： F01D5/141

摘要： A high performance steam turbine blade is provided in which the geometry of the blade airfoil is configured to minimize energy loss through the row of blades and control the radial distribution of the degree of reaction. The velocity of the steam over the blade surface is minimized to reduce friction losses, rapid deceleration of the steam velocity as it expands toward the trailing edge is avoided to prevent boundary layer separation and the reaction distribution is adjusted so that a relatively high reaction occurs at the base of the airfoil, thereby reducing secondary flow, and a relatively low reaction occurs at tip of the airfoil, thereby minimizing tip leakage. Specifically, the radial reaction distribution is such that in the hub region at least 20% of the stage pressure drop occurs in the blade row and in the tip region less than 50% of the stage pressure drop occurs in the blade row.

摘要翻译： 提供了一种高性能蒸汽轮机叶片，其中叶片翼型件的几何形状被配置成使通过该叶片行的能量损失最小化并且控制反应程度的径向分布。 蒸汽在叶片表面上的速度被最小化以减少摩擦损失，避免了蒸汽速度向后缘膨胀时的快速减速，以防止边界层分离并且调整反应分布，使得在 翼型的底部，从而减少二次流动，并且在翼型的尖端处发生相对较低的反应，从而使尖端泄漏最小化。 具体地，径向反应分布使得在轮毂区域中，叶片排中发生阶段压降的至少20％，而在叶片区域中，在叶片排中小于台阶压降的50％。

公开(公告)号：US4676723A

公开(公告)日：1987-06-30

申请号：US844496

申请日：1986-03-26

申请人： William E. Kiger ,  Jurek Ferleger

发明人： William E. Kiger ,  Jurek Ferleger

IPC分类号： F01D5/32 ,  F01D5/30

CPC分类号： F01D5/326

摘要： A locking system for attaching a circular array of side entry steam turbine blades to a rotor disc utilizing a circumferential groove in the outer periphery of the disc and a notch in one side of a blade platform to form an opening for receiving a pin which prevents the blade from sliding in the side entry slots in the disc and the next blade installed on the rotor captures a pin in the preceding blade except the last blade assembled in the array or closing blade has a kerf in the platform which registers with the circumferential groove in the disc and a locking key fitting into the kerf and groove to hold the last blade in place and the locking key being captured in the kerf and groove by a strip of metal passing through a slit in the locking key and an opening formed in the platforms.

摘要翻译： 一种锁定系统，用于将侧进气汽轮机叶片的圆形阵列附接到转盘盘上，该盘片利用盘的外周中的周向凹槽和在叶片平台的一侧的凹口，以形成用于接收销的开口， 叶片在盘的侧入口槽中滑动，并且安装在转子上的下一个叶片捕获前一个叶片中的销，除了组装在阵列中的最后一个叶片或封闭叶片在平台中具有与周向凹槽对准的切口 所述盘和锁定键配合到所述切口和凹槽中，以将最后的刀片保持在适当位置，并且所述锁定键通过穿过所述锁定键中的狭缝的金属条被捕获在所述切口和槽中，并且所述平台形成在所述平台中 。

公开(公告)号：US5221181A

公开(公告)日：1993-06-22

申请号：US851711

申请日：1992-03-16

申请人： Jurek Ferleger ,  Shun Chen

发明人： Jurek Ferleger ,  Shun Chen

IPC分类号： F01D5/14

CPC分类号： F01D5/141 ,  F05D2240/301 ,  Y10S415/914

摘要： A steam turbine stationary blade diaphragm consisting of steam turbine blades with inner and outer rings which are integral with the blades to form a diaphragm structure of a particular design that avoids steam separation by selection of the blade parameters so as to cause a substantially continuous velocity increase over the major extent of the suction surface of the blade.

摘要翻译： 一种汽轮机固定叶片，其由具有内环和外环的蒸汽轮机叶片组成，其具有与叶片成一体的形式，以形成特定设计的隔膜结构，通过选择叶片参数来避免蒸汽分离，从而导致基本连续的速度增加 在叶片的吸力表面的主要程度上。

公开(公告)号：US4784571A

公开(公告)日：1988-11-15

申请号：US12778

申请日：1987-02-09

申请人： Jurek Ferleger

发明人： Jurek Ferleger

IPC分类号： F01D5/22

CPC分类号： F01D5/22

摘要： A steam turbine of the type employing a plurality of axial entry, integral shroud blades comprises spring means resident in a slot machined in at least one face of each shroud. The spring means urge against the adjacent shroud and reduce relative motion between adjacent blades.

摘要翻译： 一种采用多个轴向入口的整体式护罩叶片的蒸汽涡轮机包括驻留在加工在每个护罩的至少一个面上的槽中的弹簧装置。 弹簧意味着抵靠相邻的护罩并减小相邻叶片之间的相对运动。

公开(公告)号：US5238366A

公开(公告)日：1993-08-24

申请号：US909532

申请日：1992-07-06

申请人： Jurek Ferleger

发明人： Jurek Ferleger

IPC分类号： F01D5/06 ,  F01D5/12 ,  F01D21/00 ,  F01D25/00 ,  G01B5/20 ,  G01B21/32

CPC分类号： G01B5/205 ,  F01D21/003 ,  G01B21/32

摘要： A method and apparatus are provided for determining the amount and type of permanent deformation experienced by a turbomachine blade. According to the invention, small holes are drilled in at least three blades of the blade row. One hole is drilled in the inlet face of the blade shroud and another hole is drilled in the inlet face of the blade root. In addition, third and fourth holes are drilled in the exit face of the shroud and a sixth hole is drilled in the exit face of the root. Measurements are taken between the shroud holes on the middle blade and the root holes on the outer blades in the row on both the inlet and exit faces. The measurements are use to form triangles indicating the blade geometry. By comparing the changes in these triangles after substantial operating time, both the type and amount of permanent deformation can be determined.

摘要翻译： 提供了一种用于确定涡轮机叶片经历的永久变形的量和类型的方法和装置。 根据本发明，在叶片排的至少三个叶片中钻出小孔。 在叶片护罩的入口面上钻一个孔，在叶根的入口面钻出另一个孔。 此外，在护罩的出口面上钻出第三和第四孔，并且在根部的出口面钻出第六孔。 在中间叶片上的护罩孔和入口和出口面之间的行中的外部叶片上的根孔之间进行测量。 测量用于形成指示叶片几何形状的三角形。 通过比较实际操作时间后这些三角形的变化，可以确定永久变形的类型和数量。

公开(公告)号：US5203676A

公开(公告)日：1993-04-20

申请号：US846103

申请日：1992-03-05

申请人： Jurek Ferleger ,  Shun Chen

发明人： Jurek Ferleger ,  Shun Chen

IPC分类号： F01D5/14 ,  F01D5/16 ,  F01D5/28

CPC分类号： F01D5/16 ,  F01D5/141 ,  F05D2240/301 ,  F05D2250/292 ,  Y10S416/50

摘要： A tapered twisted rotating blade for the fourth rotating blade row of a BB71 and BB471 turbine has a shroud segment integrally formed on the tip of the airfoil portion such that the shroud is dimensionalized according to materials used so that the tuned frequencies remain the same regardless of materials used, based on changes in Young's modulus due to use of different materials. The blade also has a pitch to chord ratio that increases linearly with length of the blade.

摘要翻译： 用于BB71和BB471涡轮机的第四旋转叶片排的锥形扭转旋转叶片具有整体形成在翼型部分的尖端上的护罩段，使得护罩根据所使用的材料进行尺寸化，使得调谐频率保持相同，而不管 使用的材料，基于使用不同材料的杨氏模量的变化。 叶片还具有与叶片的长度线性增加的节距和弦比。

公开(公告)号：US5354178A

公开(公告)日：1994-10-11

申请号：US164372

申请日：1993-12-09

申请人： Jurek Ferleger ,  Daniel R. Cornell

发明人： Jurek Ferleger ,  Daniel R. Cornell

IPC分类号： F01D5/14

CPC分类号： F01D5/141 ,  F05D2250/713 ,  Y02T50/671 ,  Y02T50/673

摘要： A steam turbine blade is provided in which the geometry of the blade airfoil is configured to reduce the weight of the blade while maintaining adequate thermodynamic performance. The blade has a high camber angle to increase its stiffness and an airfoil portion having pressure and suction surfaces. The curvature of the portion of the pressure surface between the base and 75% blade height has a point of inflection in an area adjacent the leading edge so that the curvature switches sign. The curvature upstream of the point of inflection is concave, while the curvature downstream of the point of inflection is convex.

摘要翻译： 提供了一种蒸汽轮机叶片，其中叶片翼型件的几何形状被配置为在保持足够的热力学性能的同时减小叶片的重量。 叶片具有高的外倾角以增加其刚度，并具有具有压力和吸力表面的翼型部分。 在基座和75％叶片高度之间的压力表面的部分的曲率在与前缘相邻的区域中具有拐点，使得曲率开启符号。 弯曲点上游的曲率是凹的，而拐点的下游曲率是凸的。

公开(公告)号：US5211703A

公开(公告)日：1993-05-18

申请号：US603332

申请日：1990-10-24

申请人： Jurek Ferleger ,  David H. Evans

发明人： Jurek Ferleger ,  David H. Evans

IPC分类号： F01D9/02 ,  F01D5/14

CPC分类号： F01D5/141 ,  Y10S416/05

摘要： A stationary blade of a steam turbine having a rotor and an inner cylinder for mounting the stationary blade in a row with plural identical stationary blades, comprising an airfoil having a leading edge, a trailing edge, a pressure-side concave surface and suction-side convex surface extending between the leading and trailing edges. A stagger angle being defined by as an angle of a chord between the leading and trailing edges to a longitudinal axis of the rotor; an outer ring for connecting a proximal end of the airfoil to the inner cylinder; an inner ring connected to a distal end of the airfoil; and a seal assembly carried by the inner ring and sealingly engaging the rotor; wherein the stagger angle ranges from about 42.degree. at the distal end of the airfoil to about 52.degree. at the proximal end.

摘要翻译： 一种蒸汽轮机的固定叶片，具有转子和内筒，用于将固定叶片安装成具有多个相同的固定叶片的行，包括具有前缘，后缘，压力侧凹面和吸力侧的翼型 凸表面在前缘和后缘之间延伸。 交错角由前缘和后缘之间的弦的角度定义为转子的纵向轴线; 用于将翼型件的近端连接到内筒的外圈; 连接到所述翼型件的远端的内圈; 以及由所述内圈承载并密封地接合所述转子的密封组件; 其中交错角在翼型的远端处从大约42°到近端的大约52°。

公开(公告)号：US4781534A

公开(公告)日：1988-11-01

申请号：US020045

申请日：1987-02-27

申请人： Jurek Ferleger

发明人： Jurek Ferleger

IPC分类号： F01D5/30 ,  F01D11/00

CPC分类号： F01D5/3015 ,  F01D11/006

摘要： A steam turbine of the type employing a plurality of axial entry blades has a first annular plate juxtaposed one side of the disc that overlays the grooves in the disc and faces of the platforms of the blades. If desired, a second similar annular plate may be provided on the other side of the disc. The annular plates reduce windage and leakage.

摘要翻译： 采用多个轴向入口叶片的蒸汽涡轮机具有与盘的一侧相叠合的第一环形板，其与盘的平面和平台的面相重叠。 如果需要，可以在盘的另一侧上设置第二类似的环形板。 环形板减少风阻和泄漏。

公开(公告)号：US4765046A

公开(公告)日：1988-08-23

申请号：US53300

申请日：1987-05-22

申请人： Albert J. Partington ,  Michael K. Brown ,  Jurek Ferleger ,  C. Kelly Ange ,  Anthony Hodgson ,  David A. Hornberger ,  Marshall J. Rouse ,  Spencer H. Shepard ,  Phillip H. Bonardi ,  William E. Kiger

发明人： Albert J. Partington ,  Michael K. Brown ,  Jurek Ferleger ,  C. Kelly Ange ,  Anthony Hodgson ,  David A. Hornberger ,  Marshall J. Rouse ,  Spencer H. Shepard ,  Phillip H. Bonardi ,  William E. Kiger

IPC分类号： F01D5/30 ,  B23P15/00 ,  B21K3/04

CPC分类号： B23P15/006 ,  Y10T29/49321

摘要： A method is provided for forming a circular array of rotatable blades from blades having an integral shroud with a leading planar surface and a trailing planar surface, the leading planar surface being generally parallel to an axial radial plane passing through the center of the root of the blade and the trailing surface, if extended, intersecting the axial radial plane passing through the center of the root of the blade to form an angle generally equal in degrees to 360 divided by the number of blades forming the circular array. Strict radial alignment is provided by assembling the complete blade row such that all blade center lines coincide with the groove center lines, with the shroud mating surfaces in complete contact and in tangential compression.

摘要翻译： 提供了一种用于从具有整体护罩的叶片形成可旋转叶片的圆形阵列的方法，所述整体护罩具有前平面表面和后平面表面，所述前平面表面大致平行于穿过所述根部的根部的中心的轴向径向平面 叶片和后表面（如果延伸）与穿过叶片根部的中心的轴向径向平面相交，以形成大致相等于360°的角度除以形成圆形阵列的叶片的数量。 通过组装完整的叶片排提供严格的径向对准，使得所有叶片中心线与凹槽中心线重合，其中护罩配合表面完全接触并切向压缩。