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Analysis of Contact Pressure Distribution on a Pass Partition Gasket in Conjunction With a Double-Tapered Seal in a High Pressure Heat Exchanger Closure

[+] Author Affiliations
Christopher Gardner, Rajeev Madazhy, Erik Howard

Taper-Lok Corporation, Houston, TX

Paper No. PVP2010-26157, pp. 297-303; 7 pages
doi:10.1115/PVP2010-26157
From:
  • ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
  • ASME 2010 Pressure Vessels and Piping Conference: Volume 7
  • Bellevue, Washington, USA, July 18–22, 2010
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4926-2 | eISBN: 978-0-7918-3878-5
  • Copyright © 2010 by ASME

abstract

This paper describes the use of a partition gasket in addition to a self-energized, double-tapered, metal seal in a high pressure heat exchanger. For over 30 years a single gasket was used to seal the heat exchanger partitions against the closure. Although designed to standard code, it often resulted in leaks. Over the past five years, the double-tapered seal has been used extensively to replace welded diaphragms in high pressure heat exchangers in refineries with great success. In this design a tapered-seal is introduced in conjunction with a pass partition gasket for multiple pass heat exchanger, to address problems associated with leaks. Finite Element Analysis (FEA) was performed on the assembly at bolt-up and during internal pressure operation, and contact pressure distribution was analyzed. A 12″ scaled model of the actual heat exchanger closure assembly was designed and hydrostatic pressure tested to ensure relative pressures were held. Actual working-plant applications will be discussed as well.

Copyright © 2010 by ASME

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