公开(公告)号：US4142581A

公开(公告)日：1979-03-06

申请号：US782743

申请日：1977-03-30

申请人： Yuji Yoshitomi ,  Zensuke Tamura ,  Hideaki Kamohara ,  Keiji Omura ,  Yoshimasa Murakami ,  Tadasi Takata ,  Teruo Nuwa

发明人： Yuji Yoshitomi ,  Zensuke Tamura ,  Hideaki Kamohara ,  Keiji Omura ,  Yoshimasa Murakami ,  Tadasi Takata ,  Teruo Nuwa

IPC分类号： F16L41/08 ,  B21D39/06 ,  B21D39/20 ,  F28F9/16 ,  F16L41/00

CPC分类号： B21D39/06 ,  F28F9/16 ,  Y10S165/494 ,  Y10T29/49375 ,  Y10T29/4994

摘要： A tube-hole structure for an expanded tube-to-tube-sheet joint which is formed by axially moving a rod within each tube member in each tube hole of the tube sheet by external drive means, thereby imparting an elastic mass placed inside the tube with a sufficient compressive load to expand the tube uniformly in the radial direction to provide a rigid joint between the tube and tube hole, characterized in that each tube hole has at least one circumferential groove with an axial dimension or length of 1.5/.beta. to 3.0/.beta. (.beta. being ##EQU1## WHERE R is the mean radius of the tube member to be expanded, t is the wall thickness of the tube, and .nu. is the Poisson's ratio).

摘要翻译： 一种用于膨胀的管到管板接头的管孔结构，其通过外部驱动装置在管板的每个管孔中轴向移动每个管构件内的杆而形成，从而赋予放置在管内的弹性体 具有足够的压缩载荷以在径向方向上均匀地膨胀管，以在管和管孔之间提供刚性接头，其特征在于，每个管孔具有至少一个具有1.5 /β至3.0的轴向尺寸或长度的周向槽 /β（β为 R为待膨胀的管构件的平均半径，t为管的壁厚，nu为泊松比）。