Pulsation Analysis
Pulsation analysis is the study and control of acoustic resonances
in gas pipe systems caused by strong harmonic forcing from reciprocating
gas compressors. These acoustic resonances can reduce the efficiency
of compressors and also increase the wear-rate of their valves. When
the frequency of these acoustic resonances coincides with mechanical
resonances in the attached pipework, there can be excessive vibration
and fatigue failure.
Pulsation analysis is used as a design tool, especially for
new process gas compressors purchased to API 618. It is
also used for pulsation dampener design or
where pipe failure has arisen and pipe systems need to be de-tuned. Sometimes
existing compression systems need re-evaluating when gas conditions
change significantly.
Spectrum Fluid Dynamics is a world leader in the provision of pulsation
analysis and dampener design services and uses PIPAC® software. Over
the last 25 years, simulations and site measurements have been
undertaken for all the world’s main compressor manufacturers,
and many of the leading engineering contractors and oil companies
- a total of over 550 studies. Many of these are in other languages reflecting
the worldwide locations of sites studied. Mechanical analysis of
compressors, their pipework, and support structures is carried
out using ANSYS.
Other projects include:
- Engen refinery, Republic of South Africa, for Peter Brotherhood
- Dow Chemical Iberica SA, Spain, for Thomassen
- Troubleshooting at Kharg Chemical Company, Iran for Ralph M Parsons
- Sara SPA Sardinia, for Dresser Rand
- PNEM Eindhoven Holland, for
Neuman and Esser
 Pulsation
Studies (29Kb)
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Engen
Refinery, South Africa |
One of 14 large reciprocating compressors
from Peter Brotherhood, destined for Engen in southern Africa – all
analysed by Spectrum Fluid Dynamics to API 618 using PIPAC® pulsation
analysis.
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