Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1976-11-26
1979-08-21
Levy, Stuart S.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137510, 138 45, 138 46, G05D 1600, F15D 102, F17D 120
Patent
active
041649540
ABSTRACT:
A mechanism for smoothing out the flow from the output of a positive displacement pump consists of one or more flexible wall structures consisting of a Belleville spring and a cover plate held over the hole in the Belleville spring by a stepped washer secured to the cover plate set into one or more openings in a fluid container. Means is provided to hold the flexible wall structures in the openings with the convex side extending inwardly into the opening. An elastomeric diaphragm is disposed over the flexible wall structures in sealing relationship with the openings in the body of the fluid container. The flexible wall structures deflect outwardly responsive to fluid pressure within the container, and fluctuations in pressure within the container cause variations in the deflection of the flexible wall structures thereby providing a variable volume within the fluid container. To utilize deflection of the flexible wall structures to control pressure in the container adjustable control valve parts are mounted through the flexible wall structures and a lost motion mechanism which will permit the flexible walls to deflect outwardly to a working pressure position, but will, if deflected still further, open the control valve and permit fluid to return to the intake side of the pump. The control valve may be set up to function as a relief valve, or alternatively, as an unloader valve to permit pressure within the pulsation reducer to drop below normal working pressure. A further reduction in pressure will cause the control valve to close and pressure in the pulsation reducer will increase to working pressure.
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patent: 3892258 (1975-07-01), Hendrick
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