Steam generating apparatus having a feedwater header

Details Steam generating apparatus having a feedwater header Steam generating apparatus having a feedwater header

1986-07-02

1987-03-10

Favors, Edward G.

Liquid heaters and vaporizers

Indirectly heated

Separate fluid

122 34, 122412, 122438, F22B 102

Patent

active

046483543

ABSTRACT:
A steam generator has a pressure vessel containing a stack of exchange tubes and a feedwater header of ring shape connected to a feed water intake pipe passing through the wall of the vessel. A horitzontal section of the pipe contains at least one deflector comprising an axial hub and several helical blades connecting the hub to the wall of the pipe. The blades have a length which represents at least half a winding pitch if the deflector is to counteract thermal stratification only, at least 1.5 winding pitch if for avoiding pressure surges.

REFERENCES:
patent: 1940070 (1933-12-01), Barry et al.
patent: 4404929 (1983-09-01), Brand et al.
patent: 4462340 (1984-07-01), Mayer et al.
patent: 4577593 (1986-03-01), Teigen
patent: 4579088 (1986-04-01), Kim, Jr. et al.

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