发明名称 |
METHOD OF FIXING HEAT EXCHANGE TUBES IN TUBE PLATES |
摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to metal forming and may be used in fixing tubes in tube plates of heat exchangers. Tube shaped tip is fitted into tube hole of tube plate. Annular ledge is made on tip outer surface. Annular recess is made on tip inner surface in symmetry with annular ledge axis. Recess length is smaller than that of annular kedge cylindrical surface generatrix. Tube hole is provided with rectangular annular groove and central rib. In fitting tip in place, its annular ledge is arranged opposite the annular groove. Tube is locked and tip is fixed in tube opening. Thereafter, deforming force is applied to tip inner surface. Flexural strain is applied to annular ledge when it reaches said central rib. ^ EFFECT: jointing tube to tube plate, higher operating properties. ^ 6 dwg |
申请公布号 |
RU2437736(C1) |
申请公布日期 |
2011.12.27 |
申请号 |
RU20100119099 |
申请日期 |
2010.05.11 |
申请人 |
KOZIJ SERGEJ IVANOVICH;KOZIJ SOF'JA SERGEEVNA |
发明人 |
KOZIJ SOF'JA SERGEEVNA;KOZIJ SERGEJ IVANOVICH |
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 |
|