发明名称 |
METHOD FOR SECURING TUBES TO TUBE PLATES |
摘要 |
plastic metal working, namely, fastening tubes in tube plates of heat exchangers. SUBSTANCE: method comprises steps of forming shaped tip in the form of annular protrusion on outer surface of tube placed in detachable die having annular groove; fixing tube against its possible motion by applying to tube end axial compression effort; placing tube in tube plate opening having annular groove in such a way that annular protrusion of tube is arranged opposite relative to annular groove of opening; securing tube to tube plate at applying compression effort to its inner surface; preliminarily forming annular recess, for example, with triangular cross section on front surface of tube plate equidistantly relative to contour of opening; making shaped tip with additional outer bulge near tube end face; at mounting tube in opening of tube plate placing said bulge portion over front surface of tube plate; after fastening tube, expanding bulge portion and without unloading it applying compression effort to tube end. EFFECT: enhanced operational characteristics of tube-to-tube plate joints.
|
申请公布号 |
RU2190492(C1) |
申请公布日期 |
2002.10.10 |
申请号 |
RU20010100978 |
申请日期 |
2001.01.09 |
申请人 |
SAMARSKIJ GOSUDARSTVENNYJ AEHROKOSMICHESKIJ UNIVER;OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "REMONTNO-MEKHANICHESKIJ ZAVOD" |
发明人 |
BATRAEV G.A.;KOZIJ S.I.;KOZIJ S.S. |
分类号 |
B21D39/06;B21D53/08;F28F9/16 |
主分类号 |
B21D39/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|