Method for detecting the flow rate of a centrifugal pump

Method for detecting the flow rate of a centrifugal pump

  • CN 104,603,583 B
  • Filed: 08/01/2013
  • Issued: 01/29/2021
  • Est. Priority Date: 08/07/2012
  • Status: Active Grant
First Claim
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1. A method for detecting the flow of a centrifugal pump, wherein the flow is determined from the rotational speed of the pump, a hydraulic variable of the pump and an electrical or mechanical variable of a drive motor of the pump, characterized in that a variable relating to the flow is determined by means of a mathematical relationship of terms of a formula describing the physical relationship of the pump and the drive motor, one term of the formula containing the rotational speed of the pump and the hydraulic variable of the pump and the other term containing the electrical or mechanical variable of the drive motor of the pump and the rotational speed of the pump, wherein the flow is determined from the flow and a functional relationship with a dependent variable,and wherein the dependent variable is a variable Y, which is determined by the formula:

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