Heat exchanger whose hot end has a device for protecting the tub

Details Heat exchanger whose hot end has a device for protecting the tub Heat exchanger whose hot end has a device for protecting the tub

1982-01-27

1983-12-06

Richter, Sheldon J.

Heat exchange

With protector or protective agent

122 32, 165158, 165160, 165161, F28D 700, F28F 922, F28F 1306, F22B 106

Patent

active

044187483

ABSTRACT:
A heat exchanger comprising an outer casing closed at its hot and cool ends by two tube plates, a cluster of tubes which is connected to the tube plates to discharge into inlet and outlet collectors of a fluid flowing inside the tubes, and inlet and outlet tubings of a liquid flowing in the casing and around the tubes, wherein the exchanger comprises at its hot end a device for protecting the tube plate, such device comprising two plates united by a casing to define a first zone filled with such liquid in the static state forming a thermal screen, such plates being substantially parallel with the tube plate and a first one of such plates being disposed adjacent the tube plate, the protective device also comprising passages extending through such zone from one plate to another, and means for setting up a negative pressure between such first plate and the tube plates, to ensure that such liquid flows towards the tube plate inside such passages.
Special application to heat exchangers for steam generators with liquid sodium primary fluid.

REFERENCES:
patent: 3245464 (1966-04-01), Ammon et al.
patent: 3545536 (1970-12-01), Peters et al.
patent: 3630274 (1971-12-01), Lievense
patent: 3768554 (1973-10-01), Stahl
patent: 3811498 (1974-05-01), Ferraro et al.

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