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Lines of activities >  Analysis and Design of Reciprocating Compressor Piping

Analysis and Design of Reciprocating Compressor Piping

“Analysis and Design of Reciprocating Compressor Piping” is one of the major business lines included in the “Integrated Design” section.

Application engineering section specialists of the installation department carry out a number of works, including:

  • vibration-based diagnostics of reciprocating units and their utilities;
  • complicated mathematical calculations using advanced computer systems;
  • detailed documentation development;

As is known, gas flow fluctuations in piping, influencing the compressor, can change its capacity and cause extremely high power overconsumption. Even if supports are located properly along a piping line, increased pressure pulsation level causes piping mechanical vibration, which is one of the reasons for breaking down of operating equipment.
For safe operation and economic efficiency of reciprocating compressors, it is critical to prevent and eliminate pressure fluctuations over the whole length of a gas line.

Utilities calculated only for static load are not sufficiently reliable in operation with constant intermittent forces. Gas pulsation in the reciprocating compressor piping puts forward a number of specific requirements to compressor design, and requires carrying out comprehensive analysis confirming reliability of the structure developed, which includes the following stages:

  • Development of pressure fluctuation suppression units (buffer tanks or acoustic filters);
  • Acoustic analysis of gas line piping, required for determination of piping natural acoustic frequencies and turning-out for acoustic resonance;
  • Modal analysis of the piping, required for determination of piping natural mechanical frequencies and turning-out for mechanical resonance;
  • Static analysis of the piping, required for determination of a level of actual stresses and loads on piping elements, as well as on supports of building structures;
  • Dynamic analysis of the piping , required for determination of dynamic force from flow pulsation, assessment of operability of the supports used, as well as assessment of vibration displacement amplitude level of pipeline sections;
  • Harmonic analysis of the piping, which enables to obtain pressure pulsation amplitude value in combination with generalized stressed-deformed state of the piping in the entire operating range of compressor frequencies.
  • Hydraulic analysis of the piping, which enables to obtain pressure losses value with gas flow along compressor utilities.