This paper presents rough metallic surface contact analysis focusing on the sealing mechanism in metallic interfaces of subsea shut down ball valves. The work is divided in two parts: initially, the actual rough metallic sealing surface of a ball valve is measured and evaluated by using an atomic force microscope (AFM). The surface is modeled using the finite element method in order to estimate the load to cause the plastic deformation needed for proper sealing. Then a case study is carried out to compare the effectiveness of combined sealing (rubber and metal) and metal-to-metal sealing. Based on the experimental measurements and numerical results, some manufacturing procedures for increasing the reliability of a metal-to-metal sealing in shut-down ball valves are presented.
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ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
May 31–June 5, 2009
Honolulu, Hawaii, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4346-8
PROCEEDINGS PAPER
Sealing Analysis of Metallic Interfaces Applied to Shutdown Ball Valves
M. O. Branda˜o,
M. O. Branda˜o
FMC Technologies, Rio de Janeiro, Brazil
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T. A. Netto
T. A. Netto
Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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M. O. Branda˜o
FMC Technologies, Rio de Janeiro, Brazil
T. A. Netto
Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
Paper No:
OMAE2009-79151, pp. 25-34; 10 pages
Published Online:
February 16, 2010
Citation
Branda˜o, MO, & Netto, TA. "Sealing Analysis of Metallic Interfaces Applied to Shutdown Ball Valves." Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation. Honolulu, Hawaii, USA. May 31–June 5, 2009. pp. 25-34. ASME. https://doi.org/10.1115/OMAE2009-79151
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