Corrosion resistant steam generator and method of making same

Details Corrosion resistant steam generator and method of making same Corrosion resistant steam generator and method of making same

1983-12-21

1986-04-01

Yuen, Henry C.

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

122512, 122235A, 165173, F22B 102, F28D 104

Patent

active

045790876

ABSTRACT:
A method for fabricating a steam generator and a steam generator wherein primary coolant tubes are sleeved in and in the vicinity of a tubesheet. A smooth transition region is formed between stock primary coolant tubes and sleeved portions thereof in such a manner that no sites for accelerated corrosion are formed. In addition, an adequate volume of material is provided in the transition region to withstand thermal and mechanical stresses and chemical attack. The sleeved tube is preferably thermally treated for improved corrosion resistance.

REFERENCES:
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patent: 2209974 (1940-08-01), Jacobus
patent: 2349792 (1944-05-01), Rosenblad
patent: 2368391 (1945-01-01), Young
patent: 2678224 (1954-05-01), Kooistra
patent: 2966340 (1960-12-01), Chapman
patent: 3540529 (1970-11-01), Umino
patent: 4060124 (1977-11-01), Tratz et al.
patent: 4071083 (1978-01-01), Droin
patent: 4159741 (1979-07-01), Nonnenmann et al.

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