Hydraulic expansion pre-straining of heat exchanger tubing

Details Hydraulic expansion pre-straining of heat exchanger tubing Hydraulic expansion pre-straining of heat exchanger tubing

B - Operations, Transporting

23

P

B23P 15/26 (2006.01) B21D 31/04 (2006.01) B21D 53/08 (2006.01) B23P 11/02 (2006.01) F22B 1/02 (2006.01) F22B 37/10 (2006.01) F22B 37/20 (2006.01) F28F 1/00 (2006.01)

Patent

CA 2288367

A method of hydraulically prestraining the tubes of a once-through steam generator by welding the tubes to their respective tubesheets poor to the application of hydraulic expansion to produce tensile stresses which shorten the tubes an equal and predetermined amount to increase the margin to buckling and increase the natural frequency of the tubes reducing flow induced vibration.

PREFILTRAGE D'EXPANSION HYDRAULIQUE DE TUBES D'ECHANGEUR DE CHALEUR

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