Flow control device for heat exchanger tube

Details Flow control device for heat exchanger tube Flow control device for heat exchanger tube

1986-12-23

1988-04-05

Davis, Jr., Albert W.

Heat exchange

With protector or protective agent

165174, 122406B, F28B 100

Patent

active

047352639

ABSTRACT:
The flow control device for a steam circulating heat exchanger tube (2) comprises an insert (4), secured in the tube by expansion in a zone (9) near the end of the exchanger tube or of the tube sheet (1) orifice provided in lieu of said tube, and an orifice plate (7) made from an erosion-corrosion resistant metal and secured inside the insert upstream from the bulged zone (9) created by expansion, from the standpoint of fluid flow, said insert extending for a considerable length downstream from the orifice plate. The insert includes an upstream tubular member (5) made from a metal having a low yield strength but a high elastic elongation ratio and a downstream tubular member (6) made from a metal resistant to erosion-corrosion and at least as long as ten times its inside diameter, ending in a bevel (12) tapering outwardly at an angle of less than 15.degree..

REFERENCES:
patent: 2143477 (1939-01-01), Dillon et al.
patent: 3568764 (1971-03-01), Neuman et al.
patent: 3707186 (1972-12-01), Zorrilla et al.
patent: 3977068 (1976-08-01), Krips
patent: 3983903 (1976-10-01), Kuehn, Jr.
patent: 4160560 (1978-08-01), Lauro
patent: 4191246 (1980-03-01), Cassel
patent: 4670689 (1986-08-01), Mochida et al.

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