| 摘要 |
PROBLEM TO BE SOLVED: To predict pump failures and lifetime.SOLUTION: The method for testing the pump includes determining a Mechanical Power Index (MPI) for a pump (104, 202) by operating the pump (104, 202) at operating speed for a minimum operating interval. When the pump (104, 202) is stopped under normal operation by an application (100), the pump speed is continuously monitored. The time when the pump speed decreases to an initial speed close to the operating speed is read as an initial time. When the pump speed decreases to a final pump speed close to the critical speed, the end time is read and the elapsed time is determined asΔt=(end time)-(initial time). The MPI is calculated by subtracting the final pump speed from the initial pump speed and being divided byΔt. |
