公开(公告)号：US06471483B2

公开(公告)日：2002-10-29

申请号：US09899557

申请日：2001-07-05

申请人： Richard Allan London

发明人： Richard Allan London

IPC分类号： F01D530

CPC分类号： F01D5/3038 ,  F05D2250/141 ,  F05D2250/71 ,  F05D2260/30

摘要： A turbine disc for carrying turbine blades is rotatable about a central axis and has a circumferentially extending peripheral face divided into two side face strips by a circumferentially extending root slot. For the greater part of its circumferential length opposite sides of the root slot are parallel. But at at least one location arcuate bights of opposite curvature are formed opposite to one another to form a load slot through which a root of a turbine blade can be introduced into the radially innermost part of the root slot. The arcuate bights have the same radius of curvature and may be arcs of the same circle. On each of two opposite sides of the load slot is a respective shadow slot. One shadow slot is formed by oppositely disposed arcuate bights, and the other shadow slot is formed by oppositely disposed arcuate bights. The radius of curvature of each bight of the shadow slot is greater than that of the bights of the load slot and can be at least twice that of the bights of the load slot.

摘要翻译： 用于承载涡轮机叶片的涡轮盘可围绕中心轴线旋转，并且具有通过周向延伸的根槽而分成两个侧面条带的周向延伸的外围面。 由于其大部分圆周长度，根槽的相对侧面是平行的。 但是在至少一个位置处，相对曲率的弓形弯曲形状彼此相对地形成以形成负载槽，涡轮叶片的根部可以通过该负载槽被引入到根槽的径向最内部。 弓形弯曲具有相同的曲率半径，并且可以是相同圆的圆弧。 在负载槽的两个相对侧的每一侧上都是相应的阴影槽。 一个阴影槽由相对设置的弓形弯头形成，另一个阴影槽由相对设置的弓形弯头形成。 阴影槽的每个弯曲的曲率半径大于装载槽的弯头的曲率半径，并且可以至少是装载槽的弯头的两倍。