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US 2013/0092106 A1Published application
Anti-clogging steam generator tube bundle
AssigneeWestinghouse Electric Corp.
InventorsRobert M. Wepfer, James R. Schwall, Christopher A. Weindorf, John R. Balavage
Life of this patent
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Abstract
A tube and shell steam generator having an anti-clogging heat exchange tube bundle wherein the tube support plates within the tube bundle are designed with varying degrees of porosity thereby regulating local secondary side fluid conditions (velocity, quality, superheat, void fraction, etc.) in a manner to reduce the potential for clogging of the tube support plate lobes that are more prone to clogging.
Claims14
A tube and shell steam generator comprising:
- an elongated shell having an axis extending along the elongated dimension;
- a tube sheet within the shell supported substantially transverse to the axis;
- a plurality of heat exchange tubes extending axially from the tube sheet within the shell, with the plurality of heat exchange tubes forming a tube bundle;
- and
- a plurality of tandemly spaced tube support plates respectively positioned substantially transverse to the axis and extending substantially over a width of the tube bundle, with at least some of the plurality of heat exchange tubes passing through holes axially extending through the tube support plates, wherein the tube support plates are designed to pass a fluid through the tube support plates with a flow of the fluid regulated so the flow is larger through some portions of the tube support plates than other portions of the tube support plates.
2 more elements
Dependencies are inferred from the claim text.