公开(公告)号：US3900939A

公开(公告)日：1975-08-26

申请号：US41156273

申请日：1973-10-31

Applicant: COMBUSTION ENG

Inventor： GREACEN JOHN STUART

IPC: B21D39/06 ,  B23P11/02 ,  F28F11/02 ,  B22D19/10 ,  B23P7/00

CPC classification number: F28F11/02 ,  B21D39/06 ,  B23P11/025 ,  C08L2201/12 ,  F28F2255/04 ,  Y10T29/49352 ,  Y10T29/49732 ,  Y10T29/49865 ,  Y10T403/48

Abstract: A method for plugging the ends of defective tubes in shell and tube heat exchangers is described. The plug utilized in the method is fabricated from a metallic alloy having a mechanical memory characteristic whereby it can be physically deformed into a reduced diameter for insertion into the tube end and thereafter induced to assume its original diameter to thus secure the plug within the tube.

Abstract translation: 描述了一种用于堵塞管壳式热交换器中的有缺陷管的端部的方法。 在该方法中使用的塞子由具有机械记忆特性的金属合金制成，由此其能够被物理变形成减小的直径以便插入到管端中，并且此后被诱导以呈现其原始直径，从而将插头固定在管内。