Liquid heaters and vaporizers – Tube sheets
Patent
1998-10-09
1999-11-02
Walberg, Teresa
Liquid heaters and vaporizers
Tube sheets
122 32, F22B 1716
Patent
active
059750308
ABSTRACT:
A low-pressure feedwater preheater or heater in power station plants, heated with bleed steam and having a two-pass tube bundle of the tube sheet type of construction, has a carrier design for the tube bundle having side plates (9) running parallel to the tube bundle and one or more supporting plates (8) disposed perpendicularly to the tube bundle. In the center of the bundle between the cold and the hot leg, a partition (11) extends along the entire length of the bundle leg. Arranged on either side of the partition (11) are suction tubes (12) through which non-condensable gases are drawn off in the zones of lowest pressure. According to the invention, the supporting plates (8) are each made of a single piece and are thus continuous, and the partition (11) consists of individual sheet-metal parts which are connected to the supporting plates (8). In one embodiment, the sheet-metal parts of the partition (11) and the supporting plate (8) are connected to one another by indentations (16) on each side of the sheet-metal part (11) which faces the supporting plate (8) and by a corresponding opening (17) in the supporting plate (8).
REFERENCES:
patent: 2995341 (1961-08-01), Danesi
patent: 3630276 (1971-12-01), Paine et al.
patent: 3683866 (1972-08-01), Zmola
patent: 4170263 (1979-10-01), Laber et al.
patent: 4357908 (1982-11-01), Yazidjian
patent: 5042433 (1991-08-01), Monnier
Wernig Herbert
Youssef Mustafa
Asea Brown Boveri AG
Walberg Teresa
Wilson Gregory A.
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