Void diagnostics in liquid-filled pressure sensing lines

Kang Lin; Keith Holbert

doi:10.1016/j.pnucene.2009.12.002

Void diagnostics in liquid-filled pressure sensing lines

Kang Lin, Keith Holbert

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Air or gas entrapped in liquid-filled sensing lines can result in false pressure readings, sluggish response, and extraneous noise due to acoustic resonances. This work models the impact on the pressure system transfer function of voids inside sensing lines based on an equivalent pi circuit along with a lumped parameter void representation. Field test data from a fossil power plant are used to validate the simulation results. Two void indicators derived from resonant peak frequencies are also introduced to perform sensing line diagnostics.

Original language	English (US)
Pages (from-to)	503-511
Number of pages	9
Journal	Progress in Nuclear Energy
Volume	52
Issue number	5
DOIs	https://doi.org/10.1016/j.pnucene.2009.12.002
State	Published - Jul 1 2010

Keywords

Noise analysis
Power spectral density
Pressure sensing lines
Sensing line equivalent pi model
Transfer functions

ASJC Scopus subject areas

Nuclear Energy and Engineering
Safety, Risk, Reliability and Quality
Energy Engineering and Power Technology
Waste Management and Disposal

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10.1016/j.pnucene.2009.12.002

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AB - Air or gas entrapped in liquid-filled sensing lines can result in false pressure readings, sluggish response, and extraneous noise due to acoustic resonances. This work models the impact on the pressure system transfer function of voids inside sensing lines based on an equivalent pi circuit along with a lumped parameter void representation. Field test data from a fossil power plant are used to validate the simulation results. Two void indicators derived from resonant peak frequencies are also introduced to perform sensing line diagnostics.

KW - Noise analysis

KW - Power spectral density

KW - Pressure sensing lines

KW - Sensing line equivalent pi model

KW - Transfer functions

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Void diagnostics in liquid-filled pressure sensing lines

Abstract

Keywords

ASJC Scopus subject areas

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