公开(公告)号：US06654438B1

公开(公告)日：2003-11-25

申请号：US09916274

申请日：2001-07-30

申请人： Yasuyuki Gotoh ,  Norio Kawashima ,  Akira Koizumi ,  Yoshiharu Kikuchi

发明人： Yasuyuki Gotoh ,  Norio Kawashima ,  Akira Koizumi ,  Yoshiharu Kikuchi

IPC分类号： G21C7113

CPC分类号： G21C7/113 ,  Y02E30/31 ,  Y02E30/39

摘要： A control rod for a BWR according to the present invention comprises a first unit composed of a tie rod, a handle mounted on an axially upper portion of the tie rod and a lower support member or falling speed limiter mounted on a axially lower portion of the tie rod; and a second unit composed of a sheath containing therein reactivity control material, an upper end plate mounted on an axially upper portion of the sheath and a lower end plate mounted on an axially lower portion of the sheath, wherein an upper portion of the upper end plate is fixed to the handle, a lower portion of the lower end plate is fixed to the lower support member or falling speed limiter, whereby the control rod is constructed as a joined body of the first unit and the second unit.

公开(公告)号：US06396893B1

公开(公告)日：2002-05-28

申请号：US09427937

申请日：1999-10-27

申请人： Thomas F. Carter ,  James E. Holden ,  Richard E. Kingston ,  Gary S. Martin ,  John G. Pistolis ,  James F. McLeod ,  Michael J. Sullivan

发明人： Thomas F. Carter ,  James E. Holden ,  Richard E. Kingston ,  Gary S. Martin ,  John G. Pistolis ,  James F. McLeod ,  Michael J. Sullivan

IPC分类号： G21C7113

CPC分类号： G21C7/113 ,  G21Y2002/304 ,  G21Y2002/306 ,  G21Y2004/30 ,  G21Y2004/403 ,  Y02E30/39

摘要： The control rod includes an upper absorber section and a lower velocity limiter comprised of a socket, a vane, a transition piece and a set of fins. To adjust the weight of the control rod, lighter and heavier sets of fins, as well as lighter and heavier transition pieces are provided. By suitable selection of the lighter and heavier sets of fins and the lighter and heavier transition pieces, the weight of the velocity limiter can be selectively adjusted in accordance with the weights of differently designed sections to obtain a predetermined control rod weight. Additionally, the heavier transition piece may have material removed therefrom to decrease its weight to provide an infinite adjustment of weight within a predetermined range of weights for the velocity limiter.

摘要翻译： 控制杆包括上部吸收器部分和由插座，叶片，过渡件和一组翅片组成的下限速器。 为了调整控制杆的重量，提供更轻更重的散热片，以及较轻和较重的过渡件。 通过适当选择较轻和较重的翅片组以及较轻和较重的过渡件，速度限制器的重量可根据不同设计部分的重量进行选择性调节，以获得预定的控制杆重量。 此外，较重的过渡件可以具有从其中移除的材料以减小其重量，以在速度限制器的预定重量范围内提供无限的重量调节。