公开(公告)号：US3809609A

公开(公告)日：1974-05-07

申请号：US26675672

申请日：1972-06-27

Applicant: COMBUSTION ENG

Inventor： KRAWIEC D ,  BEVILACQUA F

IPC: G21C3/34 ,  G21C3/322 ,  G21C3/356 ,  G21C3/32 ,  G21C15/24

CPC classification number: G21C3/322 ,  G21C3/3563 ,  Y02E30/38

Abstract: A NUCLEAR REACTOR FUEL ASSEMBLY CONTAINING A PLURALITY OF SPACED, PARALLEL FUEL RODS IS PROVIDED WITH FLOW DEFLECTOR VANES THAT OPERATE ON THE LIQUID COOLANT FLOWING ALONG CHANNELS BETWEEN ADJACENT FUEL ELEMENTS TO PROMOTE MIXING OF THE COOLANT AND ALSO TO PRODUCE MORE EFFECTIVE CONTACT OF THE FUEL ROD SURFACES WITH THE LIQUID. THE VINES ARE OF PARTUCULAR CONFIGURATION AND ARE INTEGRALLY FORMED ON TWISTED, THIN METAL RIBBON STRIPS, THE RIBBON STRIPS CAN BE INDIVIDUALLY DISPOSED BETWEEN ADJACENT ROWS OF FUEL ELEMENTS OR INTERCONNECTED TO FORM A GRID-LIKE STRUCTURE THROUGH WHICH THE FUEL ELEMENT EXTEND.

公开(公告)号：US3715275A

公开(公告)日：1973-02-06

申请号：US3715275D

申请日：1970-03-02

Applicant: COMBUSTION ENG

Inventor： KRAWIEC D

IPC: G21C3/356 ,  G21C3/34

CPC classification number: G21C3/3563 ,  Y02E30/40

Abstract: A bimetallic spacer grid arrangement for fuel element support in nuclear reactors. A matrix of spacer elements formed from a first material having characteristic low neutron capture cross section has nested therewithin a matrix of spring elements formed of a second material having better stress relaxation properties than said first material. The spring elements consist of an interconnected series of strips of the second material having integral tab-like projections protruding laterally therefrom at selected points so as to serve as fuel element biasing members.

Abstract translation: 用于核反应堆中燃料元件支撑的双金属间隔栅格布置。 由具有特征的低中子捕获截面的第一材料形成的间隔元件的矩阵嵌套在其中由具有比所述第一材料更好的应力松弛特性的第二材料形成的弹簧元件的矩阵中。 弹簧元件由第二材料的相互连接的一系列条带组成，其具有从选定点处横向突出的整体的片状突起，以便用作燃料元件偏置构件。