Method of counterflow through a pump and method of controlling the operation of a pump in a pumping installation

A method of detecting a counterflow in a pump comprises providing with detecting means for detecting variations in the discharge pressure of the pump and signal analyzing means for analyzing oscillation components contained in an output signal from the pressure detecting means, and detecting the pum...

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Bibliographische Detailangaben
Hauptverfasser:	OONO, YASUTERU, YOKOYAMA, ISAO, NAKAGAWA, HIROTO, KITA, EZO, KUWABARA, TAKAO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PRODUCING MECHANICAL POWER PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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