Method for ascertaining leaks of a displacement pump
AssigneeBrinkmann Pumpen K.H. Brinkmann GmbH & Co. KG
InventorMarkus Helpertz
Life of this patent
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Abstract
A method of detecting leakage in a pump (10) that has at least one displacement body (12) for displacing a medium to be pumped into a pressure line (20), the method including the steps of: a) closing-off the pressure line (20), b) operating the pump (10) with a known speed of the displacement body (12), c) measuring the pressure (P) in the pressure line (20), d) repeating the steps b) and c) with different speeds, and e) recording the dependency of the measured pressure from the speed, wherein the speed of the displacement body (12) is program-controlled to increase, starting from a minimum speed, gradually to a maximum speed, the maximum speed being calculated on the basis of the measured pressure rise.
Claims7
A method of detecting leakage in a pump that has at least one displacement body for displacing a medium to be pumped into a pressure line, the method comprising the steps of:
- a) closing-off the pressure line,
- b) operating the pump with a known speed of the displacement body,
- c) measuring the pressure in the pressure line,
- d) repeating the steps b) and c) with different speeds,
- e) recording the dependency of the measured pressure from the speed for the different speeds,
- f) determining a maximum speed of the at least one displacement body, before failure of the pump occurs, from the recorded dependencies of the measured pressure from the speed for the different speeds, prior to reaching said maximum speed, and
- g) program-controlling a speed of the displacement body to increase, starting from a minimum speed, gradually to a speed less than the maximum speed to prevent failure of the pump.
Dependencies are inferred from the claim text.