Pressure actuated baffle seal

Heat exchange – Casing or tank enclosed conduit assembly – With distinct flow director in casing

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Details

165162, 165172, F28D 700

Patent

active

048341738

ABSTRACT:
A perforated plastic baffle for a shell-and-tube heat exchanger includes pressure actuated tube seals. Heat exchanger tubes run lengthwise through a cylindrical shell, and baffles traverse the tubes. The pressure actuated seals line each baffle perforation through which the tubes extend. Each seal includes a flexible annular lip that surrounds the tube and extends upstream from the baffle. Fluid flowing through the shell and being redirected by the baffles provides a pressure differential that forces the seals' lips tightly against and around the tubes. In the absence of the fluid pressure differential, the sealing force is greatly reduced which enables the tubes to be easily inserted through the baffle perforations during assembly of the heat exchanger.

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patent: 4749031 (1988-06-01), Fukumoto

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