| 摘要 |
In a built-up rotor structure employing a long thru-bolt as in multistage gas compressors and turbines, a support sleeve is fixed on the bolt passing through the assembly of wheels. A second sleeve is fixed within the assembly of wheels and has an interlocking connection with the support sleeve which serves to restrain the thru-bolt from becoming eccentric to the wheel assembly, and to increase the natural frequency of the bolt to avoid operation at resonant conditions. The structure nevertheless accommodates normal radial growth of the individual parts due to centrifugal forces and temperature changes, and axial growth due to temperature changes.
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