发明名称 |
MACHINERY FOR THE HERMETIC CONNECTING OF A TUBE TO A TUBE BOTTOM BY MEANS OF A PRESSURIZED LIQUID |
摘要 |
An apparatus for expanding tube ends in a tube sheet of a heat exchanger tube bundle comprises a mandrel which can be inserted into the tube end and an expansion pressure generator connected to said mandrel. A source of filling liquid is also connected to the mandrel to the expansion pressure generator which has a port for the filling liquid selectively blocked by the plunger of the expansion pressure generator so that problems with check valves for the filling can be obviated. |
申请公布号 |
YU33182(A) |
申请公布日期 |
1985.03.20 |
申请号 |
YU19820000331 |
申请日期 |
1982.02.16 |
申请人 |
BUSSE WILFRIED |
发明人 |
BUSSE W. |
分类号 |
B21D39/06;B21D39/20;B21D53/06;(IPC1-7):B21D39/06 |
主分类号 |
B21D39/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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