Methods for retrofitting natural gas meters
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United States of America Patent
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Feb 25, 2014
Grant Date -
May 9, 2013
app pub date -
Nov 9, 2011
filing date -
Nov 9, 2011
priority date (Note) -
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Abstract
Disclosed are methods for diagnosing poor performance of natural gas meter stations which utilize tube bundle flow conditioners upstream of orifice plates and methods for retrofitting the natural gas meter stations to improve accuracy of orifice measurements. Diagnostic methods include making measurements of decibels of sound upstream and downstream of the orifice plate, detecting intermittent sounds from a check valve downstream of the orifice plate, and visually inspecting the internal surface of the meter tube downstream of the orifice plate. Accuracy of orifice measurements is improved by replacing a tube bundle flow conditioner with a one-piece plate flow conditioner.
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