EXTRACTING METHOD OF FASTENING COMPONENT, PROCESSING METHOD OF FASTENING COMPONENT, ROTARY MACHINE AND JIG

摘要

To improve the maintenance workability even when the centrifugal impeller or a sleeve is strongly fastened to the rotation axis.SOLUTION: When disassembling a rotary machine having a rotation axis and a fastening component fastened to the rotation axis, by applying the hydraulic pressure on the gap between the rotation axis and the fastening component, and the fastening component is pulled out from the rotation axis, the fastening component is extracted. In this case, a jig to be installed on the rotary machine, having the rotation axis and the fastening component fastened to the rotation axis, and the fastening component is provided with a hole for communicating the surface where the rotation axis and the fastening component are in contact with the other surface, in which a hydraulic jig or the like that is installed in close contact with the rotation axis and the fastening component and applies hydraulic pressure to the gap between the rotation axis and the fastening component through the hole is used.SELECTED DRAWING: Figure 2