Cylindrical member locating unit, e.g. for nuclear reactor control rod drive, comprises inner sleeve that surrounds member protruding from pressure vessel, and outer sleeve

摘要

A unit for locating a circular cylindrical member (7) in a tube (1) comprises an inner sleeve (13) and an outer sleeve (15). The inner sleeve surrounds the member over the protruding region and can be attached to it. The outer sleeve surrounds the inner sleeve and locates on the end of the tube. A unit for locating a circular cylindrical member (7) in a tube (1), where the member protrudes from the tube, e.g. for the assembly of a safety unit for a control rod drive that protrudes from a reactor pressure vessel, comprises an inner sleeve (13) and an outer sleeve (15). The inner sleeve surrounds the member over the protruding region and can be attached to it. The outer sleeve surrounds the inner sleeve and locates on the end of the tube.