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Title: System and method of detecting cavitation in pumps

A system and method for detecting cavitation in pumps for fixed and variable supply frequency applications is disclosed. The system includes a controller having a processor programmed to repeatedly receive real-time operating current data from a motor driving a pump, generate a current frequency spectrum from the current data, and analyze current data within a pair of signature frequency bands of the current frequency spectrum. The processor is further programmed to repeatedly determine fault signatures as a function of the current data within the pair of signature frequency bands, repeatedly determine fault indices based on the fault signatures and a dynamic reference signature, compare the fault indices to a reference index, and identify a cavitation condition in a pump based on a comparison between the reference index and a current fault index.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1397258
Assignee:
Eaton Corporation GFO
Patent Number(s):
9,777,748
Application Number:
12/753,930
Contract Number:
FC36-04GO14000
Resource Relation:
Patent File Date: 2010 Apr 05
Research Org:
Eaton Corporation, Cleveland, OH (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Other works cited in this record:

Method and apparatus of detecting low flow/cavitation in a centrifugal pump
patent, March 2004

Detection of pump cavitation/blockage and seal failure via current signature analysis
patent, June 2004

System and method for proactive motor wellness diagnosis
patent, February 2008

System and method for proactive motor wellness diagnosis based on potential mechanical faults
patent, March 2008

Detection of pump cavitation/blockage and seal failure via current signature analysis
patent, June 2008

Cavitation detection device and method
patent-application, January 2007

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