Throttle element, used in boiling water reactor, comprises fixing flange directed radially outward, and securing sleeve acting as interlocking connection between throttle element and undercut on inner wall of support

摘要

Throttle element inserted as an insert having a throttle bore into a outlet support (3) of a control rod guiding tube (2) comprises a fixing flange (10) directed radially outward and clamped between the front side (5) of the support and the foot part (12) of a fuel element (13), and a securing sleeve acting as an interlocking connection between the throttle element and an undercut on the inner wall of the support. Preferred Features: The securing sleeve has a plastically deformable wall region which radially extends on at least one point and is inserted into a recess in the inner wall of the throttle element.