FLOW MEASURING METHOD OF PUMP

FLOW MEASURING METHOD OF PUMP

PURPOSE:To reduce errors in flow measurement, by calculating a flow rate with a pressure differential between a pressure takeout hole installed in a casing in the vicinity of an outlet of an impeller and another pressure takeout hole installed in a casing at the upstream side. CONSTITUTION:A first p...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HIRAIWA ICHIRO, YOSHIOKA JUNICHIRO
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Beschreibung
Zusammenfassung:PURPOSE:To reduce errors in flow measurement, by calculating a flow rate with a pressure differential between a pressure takeout hole installed in a casing in the vicinity of an outlet of an impeller and another pressure takeout hole installed in a casing at the upstream side. CONSTITUTION:A first pressure takeout hole 10 is installed in a casing body 1 in the vicinity of an outlet 4a of a pump impeller 4 while a second pressure takeout hole 11 in a position nearer to an inlet 2 of a casing at the upstream side than an inlet 4b of the pump impeller, respectively. And, from a difference between both pressure values, a pump flow rate is calculated. Therefore, errors in flow measurement are more reducible as compared with the conventional method.