Lines of activities >  Integrated design >  Analysis and design of reciprocating compressors piping

Analysis and design of reciprocating compressors piping

Integrated analysis and design of reciprocating compressors piping

Vibrations of gas flow in piping can affect compressors and change their productivity and cause extremely large power overrun. The increased level of pressure pulsation causes mechanical vibration of piping, and is the main reason of operating equipment breakdown. Communications designed only for static load are not reliable enough in-process at presence of periodically acting forces. A gas pulsation in the pipelines of reciprocating compressors puts forward a number of specific requirements to their planning and necessity of implementation of integrated analysis, confirming reliability of the developed structure, the analysis includes:

  • Development of pressure pulsation suppression units (buffer vessels or acoustic filters)
  • Acoustic analysis of piping gas path, which is necessary for determination of proper acoustic frequencies of the piping, and tuning-out for acoustic resonance.
  • Modal analysis of piping, which is necessary for determination of proper mechanical frequencies of piping areas, and tuning-out for mechanical resonance.
  • Static analysis of piping, which is necessary for determination of level of actual stresses and loads on piping elements, and also on building structures of supports.
  • Dynamic analysis of piping, which is necessary for determination of dynamic force from flow pulsations, estimation of working capacity of the supports used, and also estimation of amplitudes level of vibratory displacement of pipeline areas.
  • Harmonic analysis of piping, enabling to get pressure pulsation amplitude values along with generalized stressed-deformed state of the pipeline at all working range of compressor frequencies.
  • Hydraulic analysis of piping, enabling to get pressure losses at gas flow in compressor communication lines.

 

The whole cycle of calculations is conducted by the specialists of LENNIIHIMMASH with the usage of finite-element method, which allows to calculate piping designs of any complexity and gives a full picture of processes ongoing at any section of the piping being designed.