发明名称 |
Control rod for nuclear reactor |
摘要 |
A control rod for a nuclear reactor has a structure which is capable of suppressing expansion of a reduced-diameter portion of a neutron absorber in a radial direction under shocks applied upon every stepwise driving of a control rod cluster and which can ensure integrity of a cladding tube over an extended period. The control rod includes a cladding tube closed hermetically at both ends thereof by a top end plug and a bottom end plug, respectively, a neutron absorber loaded into the cladding tube and includes a reduced-diameter portion having a smaller diameter than the other portion, the reduced-diameter portion being disposed at the bottom end plug side of the control rod, and a hold-down spring for pressing the neutron absorber downwardly against the bottom end plug. A sleeve is disposed within an annular space defined between an outer peripheral surface of the reduced-diameter portion and an inner peripheral surface of the cladding tube.
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申请公布号 |
US6636580(B2) |
申请公布日期 |
2003.10.21 |
申请号 |
US20010804091 |
申请日期 |
2001.03.12 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
MURAKAMI KAZUO;SUZUKI SHIGEMITSU;YOSHIGAI KYOHICHI |
分类号 |
G21C7/117;G21C7/10;(IPC1-7):G21C7/00 |
主分类号 |
G21C7/117 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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