公开(公告)号：US4032398A

公开(公告)日：1977-06-28

申请号：US682591

申请日：1976-05-03

Applicant: Andrew Cross ,  Anthony Randle Lunt ,  Joseph Brian Doherty

Inventor： Andrew Cross ,  Anthony Randle Lunt ,  Joseph Brian Doherty

IPC: G21C15/06 ,  G21C3/322 ,  G21C15/02 ,  G21C3/00

CPC classification number: G21C3/322 ,  Y02E30/38

Abstract: A fuel sub-assembly has an adjustable coolant flow gag. The gag comprises two relatively rotatable co-axial tubes having baffles defining longitudinal flow paths. The flow paths house flow restrictions of different size and there is a valve member movable by one of the tubes for selecting one of the passages for coolant flow.