Chapter
Apr 26, 2012
Air/Vacuum Valve Breakage Caused by Pressure Surges — Analysis and Solution
Authors: Guohua Li, Ph.D. [email protected], Christopher C. Baggett [email protected], and Roberto A. Rosario [email protected]Author Affiliations
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
An improperly designed air/vacuum valve could generate excessive pressure surges in the valve caused by the instant valve closure and the rapid expulsion of air. This study characterized dynamics of the air valve and other air valves. Simulation results in a case study showed that large pressure spikes could be generated in the air valve. An air accumulator could reduce the surge pressures. Theoretical analysis demonstrated the feasibility of an air-throttling orifice and the mechanism of an anti-slam device in reducing pressure spike values. The study also illustrated that the excessive pressure surges generated in the valve tend to be damped out in the pipe main and the valve connections tend to experience higher pressure surges for potential breakages.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Case studies
- Continuum mechanics
- Damping
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Feasibility studies
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydraulic engineering
- Hydraulic pressure
- Hydraulic properties
- Hydraulic transients
- Hydrologic engineering
- Infrastructure
- Methodology (by type)
- Pipeline hydraulics
- Pipeline management
- Pipeline systems
- Pipes
- Pressure pipes
- Research methods (by type)
- Solid mechanics
- Structural dynamics
- Valves
- Water and water resources
Authors
Affiliations
Jones Edmunds & Associates, Inc., 730 NE Waldo Road, Gainesville, Florida 32641. E-mail: [email protected]
P.E.
Jones Edmunds & Associates, Inc., 730 NE Waldo Road, Gainesville, Florida 32641. E-mail: [email protected]
Jones Edmunds & Associates, Inc., 730 NE Waldo Road, Gainesville, Florida 32641. E-mail: [email protected]
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