Method and guide for removing an inner casing from a turbomachine

摘要

The method for removing an inner casing from a machine such as a turbine or compressor includes providing supports between the outer casing and the inner casing of the machine, removing a top part of the outer casing, then removing a top part of the inner casing, then connecting a ring sector to a bottom part of the inner casing to replace the removed top part of the inner casing, then rotating the reciprocally connected ring sector and bottom part of the inner casing around the longitudinal axis to make the bottom part of the inner casing accessible, then removing the bottom part of the inner casing, guiding the reciprocally connected ring sector and bottom part of the inner casing during rotation, to prevent movement along the longitudinal axis.

主权项

1. A method for removing an inner casing from a machine having an outer casing, the inner casing within the outer casing, and a rotor within the inner casing, the rotor having a longitudinal axis, the method comprising:
providing supports between the outer casing and the inner casing; removing a top part of the outer casing; then removing a top part of the inner casing; then connecting a ring sector to a bottom part of the inner casing to replace the removed top part of the inner casing; then rotating the reciprocally connected ring sector and bottom part of the inner casing around the longitudinal axis to make the bottom part of the inner casing accessible; then removing the bottom part of the inner casing; guiding the reciprocally connected ring sector and bottom part of the inner casing during rotation, to prevent movement along the longitudinal axis, wherein guiding includes providing a guide cooperating with the ring sector and/or inner casing bottom part and adjusting a configuration of the guide along the longitudinal axis.