Torque controlled pump protection with mechanical

专利名称：Torque controlled pump protection with

mechanical loss compensation

发明人：Anthony E. Stavale,Nicolas W. Ganzon,Daniel

J. Kernan

申请号：US10846946申请日：20040513

公开号：US20050252205A1公开日：20051117

专利附图：

摘要：A method and apparatus are provided for controlling the operation of a pump,such as a centrifugal pump, featuring steps of either adjusting the operation of the pump,

or issues a warning to a user of the pump of an undesirable operating condition, or both,based on a comparison of an actual torque value and a corrected torque value eitheralone or in combination with a further step of compensating the corrected torque valuebased on a mechanical power offset correction. The corrected torque value may include aBest Efficiency Point (BEP) torque value and may also be compensated for based on atleast the current operating speed of the pump. The pump has a controller forperforming the steps of the method. The controller can compensate the correctedtorque value based on the square of the speed change of the pump. The comparison mayinclude a ratio of the actual torque value to the corrected torque value, and the ratio ofthe actual torque value to the corrected torque value may also be compared to ratioscorresponding to either a dry run condition, a minimum flow condition, a runoutcondition, or some combination thereof.

申请人：Anthony E. Stavale,Nicolas W. Ganzon,Daniel J. Kernan

地址：Victor NY US,Seneca Falls NY US,Liverpool NY US

国籍：US,US,US

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