Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems
Patent
1982-05-21
1985-09-17
Schwadron, Martin P.
Fluid handling
Self-proportioning or correlating systems
Self-proportioning flow systems
13710131, 222 57, 417349, 417401, 417550, G05D 11035
Patent
active
045414505
ABSTRACT:
There is provided a proportioning system for mixture of the fluid to a liquid-carrying main line in a substantially constant, presettable proportion to the flow rate of the liquid in the main line. The system comprises pump means for drawing a quantity of fluid from a vessel and for injecting the quantity into the main line, pump-drive means impactable by the main-line liquid for driving the pump means, flowmeter means for monitoring the instantaneous flow rate of the main line and converting the flow rate into a flow-rate proportional rotary motion of an output member of a flowmeter means. The system further comprises pilot-valve means for converting rotary motion into trains of substantially square-wave-like liquid pressure pulses of a frequency dependent on the flow-rate proportional rotary motion, and control-valve means, acted upon via the pilot-valve means by the liquid-pressure pulses, for alternatingly passing liquid from the main line to the pump-drive means, and permitting return of the liquid from the pump-drive means to the control-valve means.
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patent: 4108205 (1978-08-01), Hawley
patent: 4276001 (1981-06-01), Holmes
Hepperle Stephen M.
Schaffer Murray
Schwadron Martin P.
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