公开(公告)号：US20170009589A1

公开(公告)日：2017-01-12

申请号：US14936926

申请日：2015-11-10

申请人： Siemens Energy, Inc.

发明人： Mohit Gupta ,  Jonathan A. Mount ,  Scott Michael Widrig ,  Ravishankar P. Angal

IPC分类号： F01D5/14 ,  F01D5/18

CPC分类号： F01D5/147 ,  F01D5/18 ,  F05D2230/21 ,  F05D2240/304 ,  F05D2260/941 ,  F05D2270/114

摘要： Airfoil outer wall thickness of a gas turbine engine blade is increased in the zone that is proximate the trailing edge and blade hub by forty to sixty percent (40-60%) greater than comparable greatest wall thickness anywhere else along the trailing edge from outboard that zone all the way to the blade tip. The increased thickness zone includes a transition zone that bridges the respective airfoil outer wall thicknesses proximate the hub and tip of the blade. Some embodiments also incorporate pedestals with compound curve fillets in the increased wall thickness zone. The increased thickness zone reduces blade cracking propensity and enhances service life.

摘要翻译： 燃气涡轮发动机叶片的翼型外壁厚度在靠近后缘和叶片轮毂的区域中增加40-60％（40-60％），大于沿着从外侧的后缘的其他任何其他可比较的最大壁厚， 一直到刀片尖端。 增加的厚度区域包括过渡区域，其跨过叶片的毂和尖端附接相应的翼型件外壁厚度。 一些实施例还将具有复合曲线圆角的基座并入增加的壁厚区域。 增加的厚度区域可减少刀片开裂倾向并增加使用寿命。

公开(公告)号：US20150330235A1

公开(公告)日：2015-11-19

申请号：US14699269

申请日：2015-04-29

申请人： Siemens Energy, Inc.

发明人： Charalambos Polyzopoulos ,  Mohit Gupta ,  Robert Hudson ,  Erica Holden ,  David Myers

IPC分类号： F01D5/32

CPC分类号： F01D5/323 ,  F01D5/3007 ,  F05D2250/183 ,  F05D2250/184 ,  F05D2250/25

摘要： An adjustable blade root spring device for turbine blade fixation in turbomachinery. The device is designed to be placed in a space in a rotor disk cavity adjacent to a tip of a blade root, where the device applies a radial outward force on the turbine blade to fix the blade position in the rotor disk. The device includes a wave spring with integral end blocks which is compressed by a bolt and a coil spring. When the wave spring is compressed in length, it increases in height and makes contact with the rotor disk and the turbine blade. The force of the wave spring on the turbine blade can be adjusted via the bolt, and the coil spring provides an increased compliance range. The body of the device has an oblong cross-sectional shape, thereby preventing rotation of the device in the space between the blade and the disk.

摘要翻译： 用于涡轮机械中的涡轮叶片固定的可调叶片根弹簧装置。 设备被设计成放置在与叶片根部的尖端相邻的转子盘腔中的空间中，其中该装置在涡轮叶片上施加径向向外的力以将叶片位置固定在转子盘中。 该装置包括具有整体端块的波形弹簧，其通过螺栓和螺旋弹簧压缩。 当波形弹簧长度被压缩时，其高度增加并与转子盘和涡轮叶片接触。 涡轮叶片上的波形弹簧的力可以通过螺栓调节，并且螺旋弹簧提供增加的顺应性范围。 装置的主体具有长方形横截面形状，从而防止装置在叶片和盘之间的空间中旋转。

公开(公告)号：US09909431B2

公开(公告)日：2018-03-06

申请号：US14699269

申请日：2015-04-29

申请人： Siemens Energy, Inc.

发明人： Charalambos Polyzopoulos ,  Mohit Gupta ,  Robert Hudson ,  Erica Holden ,  David Myers

IPC分类号： F01D5/32 ,  F01D5/30

CPC分类号： F01D5/323 ,  F01D5/3007 ,  F05D2250/183 ,  F05D2250/184 ,  F05D2250/25

摘要： An adjustable blade root spring device for turbine blade fixation in turbomachinery. The device is designed to be placed in a space in a rotor disk cavity adjacent to a tip of a blade root, where the device applies a radial outward force on the turbine blade to fix the blade position in the rotor disk. The device includes a wave spring with integral end blocks which is compressed by a bolt and a coil spring. When the wave spring is compressed in length, it increases in height and makes contact with the rotor disk and the turbine blade. The force of the wave spring on the turbine blade can be adjusted via the bolt, and the coil spring provides an increased compliance range. The body of the device has an oblong cross-sectional shape, thereby preventing rotation of the device in the space between the blade and the disk.