Torque controlled pump protection with mechanical loss compensation
First Claim
1. A method for controlling the operation of a centrifugal pump, centrifugal blower, centrifugal mixer or centrifugal compressor characterized in that the method includes the steps of:
- adjusting either the operation of the pump, or issuing 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; and
compensating the corrected torque value based on a mechanical power offset correction.
2 Assignments
0 Petitions
Accused Products
Abstract
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 either alone or in combination with a further step of compensating the corrected torque value based on a mechanical power offset correction. The corrected torque value may include a Best Efficiency Point (BEP) torque value and may also be compensated for based on at least the current operating speed of the pump. The pump has a controller for performing the steps of the method. The controller can compensate the corrected torque value based on the square of the speed change of the pump. The comparison may include a ratio of the actual torque value to the corrected torque value.
94 Citations
62 Claims
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1. A method for controlling the operation of a centrifugal pump, centrifugal blower, centrifugal mixer or centrifugal compressor characterized in that the method includes the steps of:
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adjusting either the operation of the pump, or issuing 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; and compensating the corrected torque value based on a mechanical power offset correction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A centrifugal pump, centrifugal blower, centrifugal mixer or centrifugal compressor pump having a controller for controlling the operation of the pump characterized in that
the controller either adjusts 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; - and compensates the corrected torque value based on a mechanical power offset correction.
- View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A controller for controlling the operation of a centrifugal pump, centrifugal blower, centrifugal mixer or centrifugal compressor, characterized in that
the controller either adjusts 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; - and compensates the corrected torque value based on a mechanical power offset correction.
- View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A centrifugal pump, centrifugal blower, centrifugal mixer or centrifugal compressor having a controller for controlling the operation of the pump characterized in that
the controller either adjusts 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, where the corrected torque value is based on the current pump speed.
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57. A device having a controller for controlling the operation of the device characterized in that
the controller either adjusts 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; - and
compensating the corrected torque value based on a mechanical power offset correction. - View Dependent Claims (58, 59, 60, 61, 62)
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Specification