The study on muffler parameters influence on the pneumatic pressure reducing valve performance

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Abstract

The main noise source in gas distribution systems is the gas pressure reduction in regulators. Nowadays the special mufflers, representing a set of orifices, are widely used for pressure regulator noise reduction. However, the installation of such devices may cause malfunction of the unit. That is why there is a need to study the characteristics of regulator with the muffler in order to select the parameters at which the desired pressure reduction is retained and the noise is reduced.
This paper studies the regulator which represents an equivalent of reduction valve of a similar scheme with the muffler installed in the outlet line. The output impedance increase may lead to loss of stability and control accuracy. The mathematical model of this system was implemented in the Simulink software in order to analyze the muffler impact on pressure relief valve static and dynamic characteristics. The program in Matlab software was also developed for determination of the noise generated by the system. The experimental research using the pneumatic bench was carried out for mathematical model verification.
The dependences between the main system operating parameters and the muffler flow area were obtained as a result of simulation. The muffler influence on the transient processes quality was analyzed. The areas of stability in the regulator and muffler parameter space were calculated. The muffler flow area values, providing the lowest level of the noise generated by the system were determined. The theoretical results have good correlation with experimental data.

About the authors

Alexander Igolkin

Samara National Research University

Email: igolkin97@gmail.com

Doctor of technical science, assistant professor at Department of Power Plants Automatic Systems

Russian Federation

Kirill Afanasev

Samara National Research University

Author for correspondence.
Email: kirill.m.afanasev@gmail.com

PG student, assistant lecturer at Department of Power Plants Automatic Systems

Russian Federation

Evgeny Shakhmatov

Samara National Research University

Email: shakhm@ssau.ru

Doctor of technical science, professor at Department of Power Plants Automatic Systems

Russian Federation

Dmitry Stadnik

Samara National Research University

Email: sdm-63@bk.ru

Assistant lecturer at Department of Power Plants Automatic Systems

Russian Federation

References

  1. Hos, C.J., Champneys, A.R., Paul, K. and McNeely, M. (2014), Dynamic behavior of direct spring loaded pressure relief valves in gas service: Model development, measurements and instability mechanisms, Journal of Loss Prevention in the Process Industries, vol. 31, pp. 70-81.
  2. Igolkin, A., Koh, A., Kryuchkov, A., Safin, A. and Shakhmatov, E. (2012), Pressure reducing valve noise reduction, Proceedings of the 19th International Congress on Sound and Vibration, Vilnius, Lithuania, 8–12 July.
  3. Igolkin, A., Kryuchkov, A., Safin, A. and Soroka, I. (2013), Silencer optimization for the pressure reducing valve, Proceedings of the 20th International Congress on Sound and Vibration, Bangkok, Thailand, 7–11 July.
  4. Badykova, L., Stadnik, D., Afanasev, K., Igolkin, A. and Sverbilov, V., (2014), Study on dynamics of air pressure reducing valve with focus on the noise attenuation problem, Proceedings of 8th Ph.D Symposium on Fluid Power (FPNI2014), Lappeenranta, Finland, 11-13 June.
  5. Weaver, D.B. (1979), Flow Induced Vibrations in valves Operating at Small Openings, Practical experiences with Flow-Induced Vibrations Symposium, Karlsruhe, Berlin.
  6. Makaryants, G., Sverbilov, V., Prokofiev, A., Makaryants, M., and Shakhmatov, E. (2012), The tonal noise reduction of the proportional pilot-operated pneumatic valve, Proceedings of the 19th International Congress on Sound and Vibration, Vilnius, Lithuania, 8–12 July.
  7. Stadnik, D., Sverbilov, V. and Gimadiev, A. (2015), Researches on self-excited oscillations and pressure accuracy in power plant automatic control systems, Proceedings of the 22nd International Congress on Sound and Vibration, Florence, Italy, 12–16 July.
  8. Makaryants, G., Prokofiev, A., Sverbilov, V., Shakhmatov, E., and Makaryants, M. (2011), Self-oscillations of the poppet relief pneumatic valve due to instability of the airflow around an inlet port, Proceedings of the 18th International Congress on Sound and Vibration, Rio de Janeiro, Brazil, 10-14 July.
  9. Beranek, L.L. and Ver, I.L. (2006), Noise and vibration control engineering, John Wiley & Sons, Hoboken, NJ.

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Copyright (c) 2018 Александр Алексеевич Иголкин, Кирилл Михайлович Афанасьев, Евгений Владимирович Шахматов, Дмитрий Михайлович Стадник

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Journal of Dynamics and Vibroacoustics

ISSN 2409-4579 (Online)

Publisher and Founder: Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation.

Extract from the register of registered media

Editor-in-chief:  Academician of the RAS
E. V. Shakhmatov 

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Address for correspondence: 34, Moskovskoye shosse, Samara, 443086, Russian Federation, Samara National Research University (room 324, building 14)

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