| 摘要 |
The rear radially extending component of a radial flow turbine or compressor rotor is centered on a cylindrical surface spaced from the common shaft, on which the rotor is wedged by a tapered sleeve, by an extension of one component fitting into a recess in the other, but this cylindrical surface is not required to transfer any torque, because that is transferred from the forwardly extending component to the radially extending component by ridges of one fitting into radial grooves of the other near the base of the vanes. Greater thermal expansion of the radially extending component is accommodated by the claw ridge slipping radially in its groove. When the centering surface is provided on a rearward extension of the forwardly extending component instead of on a forward extension of the radially extending component, then an annular recess is provided to form a lip engaging the extension, so that the lip will not be affected by centrifugal forces resulting from the larger external diameter of the radially extending component. |
