发明名称 DEMOUNTABLE FUEL ASSEMBLY FOR A NUCLEAR REACTOR COOLLED BY LIGHT WATER
摘要 The guide tube (4) is fixed inside the adapter plate (10) of the demountable end block by a locking sleeve (20). The locking sleeve (20) comprises a part (24) ensuring expansion of the tube (4) and a ferrule (25) for fixing in the adapter plate (10). The fixing ferrule (25) consists of cylindrical segments separated by slits arranged in the direction of the generatrices of the ferrule (25). The cylindrical segments have deformations (29) inside cavities (22) radially directed relative to the through-hole (11) of the adapter plate (10), for ensuring fixing of the sleeve (20). The cylindrical segments of the ferrule (25) can be folded inwards so as to disengage the deformations (29) from the cavities (22), before extraction of the sleeve (20), in order to carry out demounting of the connection of the guide tube (4) and the adapter plate (10).
申请公布号 ZA8906363(B) 申请公布日期 1991.04.24
申请号 ZA19890006363 申请日期 1989.08.21
申请人 FRAMATOME;COGEMA 发明人 BERNARD PETIT
分类号 G21C3/33;G21C3/326;G21C3/334 主分类号 G21C3/33
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