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Method and system for monitoring a piston rod

  • US 20070151342A1
  • Filed: 01/03/2006
  • Published: 07/05/2007
  • Est. Priority Date: 01/03/2006
  • Status: Active Grant
First Claim
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1. A method for monitoring a condition of a piston rod of a reciprocating compressor, said piston rod having a length defined between a piston end and a crosshead end, said method comprising:

  • positioning a first probe with respect to the piston rod along a x-axis and positioning a second probe with respect to the piston rod along a y-axis coplanar with and substantially perpendicular to the x-axis;

    detecting a current ringing vibration amplitude greater than ten times a maximum of a one-hour average and a noise floor at a ringing frequency; and

    diagnosing a bent rod condition.

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