发明授权
- 专利标题: Upper tie plate for boiling water nuclear reactor
- 专利标题(中): 沸水核反应堆上层板
-
申请号: US399107申请日: 1989-08-28
-
公开(公告)号: US5002724A公开(公告)日: 1991-03-26
- 发明人: Robert B. Elkins , Bruce Matzner , Michael V. Curulla
- 申请人: Robert B. Elkins , Bruce Matzner , Michael V. Curulla
- 申请人地址: CA San Jose
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: CA San Jose
- 主分类号: G21C3/33
- IPC分类号: G21C3/33 ; G21C3/324
摘要:
An improved upper tie plate is disclosed in a fuel bundle for a boiling water nuclear reactor. The tie plate resides in a fuel bundle including an upper tie plate, a lower tie plate, a matrix of sealed fuel rods supported therebetween, and a surrounding channel. Both the lower tie plate and the improved upper tie plate have two functions; they support the fuel rods in vertical upstanding relation between the tie plates and interior of the channel and permit the passage of moderating coolant through the channel from the bottom of the channel to the top of the channel. This moderating coolant enters through the lower tie plate in the liquid form, passes into the matrix of upstanding fuel rods where steam is generated and exits outwardly through the improved upper tie plate as a water steam mixture at the top of the fuel bundle. The improvement includes the support of the channel directly from the fuel bundle lifting bail for transmission of load directly to the bail instead of a cantilevered support through the tie plate. This direct support enables cutting away a portion of the matrix overlying the fuel rods for reduction of pressure drop in the escaping steam/water phase from the fuel bundle. Additionally, this alignment enables raising of the points of tie plate support for longer fuel rod length. Improved fuel bundle performance results.
公开/授权文献
- US5645607A Hip stem provisional having adjustable neck offsets 公开/授权日:1997-07-08
信息查询