Fluid handling – Processes
Patent
1997-12-19
1999-10-19
Lee, Kevin
Fluid handling
Processes
251118, 251127, 138 44, F16K 4708
Patent
active
059671653
ABSTRACT:
A valve body with a diverted flow passage extending between the inlet and the outlet is provided with a closure element that is mounted between the inlet and outlet and movable between first and second lift points for regulating fluid flow through the passage. A baffle disposed in the flow passage intermediate the first and second lift points alters one or more flow characteristics of the fluid to improve the efficiency of fluid flow through the valve. In a right angle body valve, the baffle takes the form of a plate with an aperture positioned concentrically with the inlet passage and the valve closure element. A top plane surface of the baffle plate is positioned below the centerline of the outlet and is perpendicular to the centerline of the inlet. The baffle separates turbulent areas of flow in the passage so that the pressure and flow of fluid exiting the valve are more uniformly distributed over the entire outlet. In modified forms of the invention, the baffle shape, position and aperture are matched with the flow constraining structure to produce optimum flow through the structure. The invention may be employed in any structure where intersecting flow paths meet such that the direction of fluid flow is changed between the structure's inlet and outlet.
REFERENCES:
patent: 2651323 (1953-09-01), D'Auriac
patent: 3481365 (1969-12-01), Keen
patent: 4705065 (1987-11-01), McNeely et al.
patent: 5134855 (1992-08-01), Belcher et al.
A. Lichtarowicz and E. Markland: "Calculation of Potential Flow with Separation in a Right-angled Elbow with Unequal Branches." Dept. of Mechanical Engineering, University of Nottingham. May 1963.
S. Hayashi, T. Matsui, and T. Ito: "Study of Flow and Thrust in Nozzle-Flapper Valves." Journal of Fluids Engineering, Mar. 1975, pp. 39-50.
J. E. Jones: "Potential Flow from a Tapering Nozzle Impinging on a Flat Plate." Journal of Fluids Engineering, vol. 106, Mar. 1984, pp. 54-59.
Bushman Browning
Lee Kevin
Tyco Flow Control, Inc.
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