The Babcock & Wilcox Company

Thomas Paul Hoosic

Edward F Radke

Edward W Kreider

A buckstay system for a membraned-tube wall of a steam generator having a first wall section which meets a second wall section at an angle to form a corner. At least one buckstay extends across at least part of each wall section. A pair of tie bars are welded to each other at the corner, an end connection corner tie is welded at the corner to the pair of tie bars, and a pair of end connection buckstay brackets are welded to each end of the buckstays. A pair of pinned end connection links, an end connection corner tie and the end connection buckstay bracket transmit forces from one buckstay to the other wall's tiebar. Bending forces which tend to bend each wall section are transmitted to each respective buckstay which resists such forces. Each buckstay is provided with at least one new anchor assembly having upper and lower support plates welded to the outside surface of the tubes and engaged with each buckstay, two pads welded to and spaced from each other on top of each support plate, and a U-shaped plate welded on top of each pad to form an aperture. A first extended standoff nearest the corner is welded directly to one tie bar and its upper and lower ends are received within apertures formed by the U-shaped plates. A second extended standoff welded to a bumper plate and also to the tie bar moves in the space between the pads. A third extended standoff's upper and lower ends are received within apertures formed by the other U-shaped plates and is engaged to its associated buckstay.

Boiler buckstay system

An arrangement for protecting the wall of a vapor generator from stresses due to thermal expansion of duct end sections and plenums associated therewith, and including support plate means which abut the plenum ends and transmit the stresses to rigid support members to be balanced by similar stresses from the opposite end of the plenum.

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Clinton, OH, United States of America

Thomas Paul Hoosic