Internal tube sheet sealing apparatus assembly for tubular heat exchangers
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United States of America Patent
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-
Jun 14, 1988
Issued Date -
N/A
app pub date -
Apr 18, 1986
filing date -
Dec 12, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Internal tube sheet sealing apparatus assembly for tubular heat exchangers which operate with pressures of, e.g., greater than 1000 psi on both sides of the tube sheet and wherein the tube sheet itself is usually subject to a lower differential pressure, comprising tube sheet loading means including a plurality of shear means assemblies and bolts the can load the tube sheet joint independently of each other, said tube sheet loading means enabling (1) the tightness of the tube sheet joint and tube joints to be inspected during differential pressure hydrotesting of the shell side without the channel cover assembly mounted in place and (2) 'in-service' re-loading of the tube sheet joint without removing the channel cover assembly.
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