Method of tension expanding tube to plate and apparatus therefor

Details Method of tension expanding tube to plate and apparatus therefor Method of tension expanding tube to plate and apparatus therefor

1987-12-04

1992-07-07

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

29523, 29727, B23P 1526

Patent

active

051271559

ABSTRACT:
A method and apparatus for tension expanding a plate fin heat exchanger. The plate fin heat exchanger has prebelled hairpin tubes with the bells in contact with the upper tube sheet. The hairpin tubes are expanded one hairpin at a time and the upper tube sheet is gripped to receive the forces of expansion which are transmitted from the prebelled tube ends bearing against the tube sheet.

REFERENCES:
patent: 3487523 (1970-01-01), Ames
patent: 3824668 (1974-07-01), Wightman
patent: 4459917 (1984-07-01), Michael et al.
patent: 4584751 (1986-04-01), Gray et al.
patent: 4584765 (1986-04-01), Gray
patent: 4720920 (1988-01-01), Gray
patent: 4734969 (1988-04-01), Currier et al.

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