Abstract: This invention relates to shell and tube heat exchangers and similar equipment and is particularly concerned with an improved arrangement for sealing the longitudinal edges of the pass baffle with the inner wall of the shell in such a manner as to prevent fluid leaks through that juncture which have the effect of bypassing the heat exchanger. The invention also relates to an improved tube bundle design wherein an aligned notch or indentation is provided in each of the tube bundle cross baffles adjacent the longitudinal edges of the pass baffle to yield a measure of protection for the edge of the pass baffle when the bundle is removed from the shell for maintenance purposes and to an optimized tube bundle configuration which may be readily reversed or rotated to extend its service life.

Abstract: A tubesheet for supporting closely spaced heat exchange tubes includes a plurality of sleeves or similar tubular members, through which the heat exchange tubes pass, disposed within a frame such that the longitudinal axes of all the tubular members are parallel. Preferably, each tubular member is welded or otherwise attached to the tubular member adjoining it. The frame is comprised of flanges that are normally welded or otherwise attached to the tubular members that adjoin them. The resultant tubesheet is stronger than conventional tubesheets having the same length of bridge wall separating the tube openings and therefore may be used to obtain a smaller than normal spacing between the tubes.

Abstract: In a shell and tube heat exchanger including a floating tube sheet to which a floating head is connected during assembly of the exchanger, the floating head is supported in the required position adjacent the tube sheet during the assembly operation by means of a supporting member extending outwardly from the face of the tube sheet.

Abstract: Gaskets used in flanged assemblies containing gasket recesses are held in place during the makeup of such assemblies by means of metallic springs which are attached to the wall of the recess adjacent the edge of the gasket and, when the gasket is properly positioned, bear against the edge with sufficient force to hold the gasket in place.

Abstract: The tubes adjacent the shell inlet in a shell-and-tube heat exchanger or similar device are protected against erosion by the incoming shell-side fluid by tube shields which are fixed at one end to a tube sheet or baffle and slidably supported at the other end by a transverse bar or similar supporting member attached to an adjacent tube sheet or baffle. In exchangers having staggered tubes, the exposed tubes in the second row may be protected by tube shields which depend from the tube shields protecting tubes in the first row or from their supporting members and which extend adjacent the exposed tubes in the second row.

Abstract: A shell and tube heat exchanger includes a tube bundle having a stationary tube sheet near one end thereof; a second tube sheet near the other end thereof; a plurality of tubes extending between the stationary tube sheet and the second tube sheet; a plurality of segmented transverse baffles located between the stationary tube sheet and the second tube sheet, the cut of each transverse baffle being located about 180.degree. from those on the adjacent transverse baffles; a double segmented auxiliary baffle located near at least one end of the tube bundle, the cut of the double segmented baffle extending substantially parallel to the cut on the adjacent transverse baffle and the auxiliary and transverse baffles being located at substantially equal intervals; and a longitudinal baffle member extending from the cut of the transverse baffles adjacent the auxiliary baffles to the corresponding cut on the auxiliary baffles.