Honeycomb-type wear ring increases rotodynamic pump stability

06/17/2002
Based on a presentation to the 19th International Pump Users Symposium, Houston, Feb. 25-28, 2002.A hydrocarbon condensate pump in Oil & Natural Gas Corp. Ltd.'s Uran, India, processing plant was experiencing considerable rotodynamic instability. During many pump modifications from December 1995 to May 1999, a honeycomb-type wear ring proved to increase pump rotodynamic stability better than plain or serrated wear rings.The pump experienced the failures while handling second-stage condensate in a crude stabilizing unit. The 10-stage horizontal barrel-type pump had to handle hydrocarbon condensate, which always contains 8-9 mole % of vapor in the suction line.Every pump that handles hy...
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