Hydraulics performance of tilting-disk check valves. [High temperature liquid sodium service for LMFBR primary circuits]
The hydraulic performance characteristics of large-diameter tilting-disk check valves for high-temperature liquid sodium service are examined. In particular, design parameters for pressure drops during normal operation, for maximum permissible reverse flow during valve closure, and for maximum fluid hammer surges are considered. Equations and coefficients are provided for evaluation of pressure losses as a function of disk angle and line Reynolds number. A method of calculating fluid torques on a moving disk requiring only one experimental coefficient is also provided. Friction between moving parts of the valve is described with reference to the maximum permissible reverse flow specification. A technique for estimating fluid hammer pressure surges as a function of the initial contact angle of the disk with an energy-absorbing dashpot is described. All the design techniques developed are general and can be applied to most check valve designs. Test results for a 16-in. (406-mm) FFTF check valve are provided and are compared favorably with theoretical predictions of dashpot pressures and fluid hammer surges.
- Research Organization:
- Foster Wheeler Energy Corp., Livingston, NJ
- OSTI ID:
- 7196081
- Journal Information:
- J. Hydraul. Div., Am. Soc. Civ. Eng.; (United States), Journal Name: J. Hydraul. Div., Am. Soc. Civ. Eng.; (United States) Vol. 102:HY1; ISSN JYCEA
- Country of Publication:
- United States
- Language:
- English
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