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Compressor Valve Health Monitor

  • US 20170030349A1
  • Filed: 07/28/2015
  • Published: 02/02/2017
  • Est. Priority Date: 07/28/2015
  • Status: Active Grant
First Claim
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1. A valve monitor for use with a rotating machine having a plurality of valves and a rotating element, the valve monitor comprising:

  • a plurality of valve sensors detecting at least vibration, each valve sensor uniquely associated with one of the valves, each valve sensor measuring vibrations at the associated valve and generating a vibration signal;

    a tachometer associated with the rotating element of the rotating machine to measure rotation of the rotating element; and

    a signal processing module in communication with each valve sensor and the tachometer, the signal processing module including a frequency filter operable to remove low frequency components below a selected frequency from the vibration signal to produce a filtered vibration signal, the signal processing module operable to;

    correlate the vibration signal with an angular position corresponding to the rotation of the rotating element;

    apply a stress wave analysis to digital data representing the filtered vibration signal from a selected valve to produce analyzed data corresponding to flow turbulence at the selected valve; and

    generate a circular waveform representing the flow turbulence at the selected valve based on the analyzed data.

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