Influence of electric potentials from natural gas consumers’ equipmemt to the insulation of gas-mains flange connections

Authors

  • Dmitriy I. Zaliznyy Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus
  • Yuriy A. Rudchenko Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus
  • Mikhail N. Novikov Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus
  • Denis R. Moroz Project Scientific Research Republican Enterprise «NII BELGIPROTOPGAZ»; pereulok Domashevskiy, 11A, Minsk, 220036, Belarus

DOI:

https://doi.org/10.33408/2519-237X.2017.1-1.5

Keywords:

gas-main, flange connection, insulation, overvoltage, electrical breakdown

Abstract

Purpose. This investigation is aimed to realize how the electric breakdown of gas-main flange connections can occur.

Methods. Imitation modeling method is described in this paper.

Findings. An equivalent electrical scheme of gas-mains is developed in the paper. The electrical scheme consists of the active, inductive and capacitive resistances. Using the imitation modeling it is shown that highest voltage on the gas-mains flange connections can occur when electrical kindling is switched on and operation rules of electrical installations are broken. The overvoltage can bring to the flange connection insulation breakdown and to provoke the gas ignition.

Application field of research. The obtained results can be used in the design of gas-main pipelines protection.

Conclusions. The gas pipes and gas equipment on the consumer side are to be grounded and should not touch the electrical cables to avoid the electrical breakdown of the flange connection insulation.

Author Biographies

Dmitriy I. Zaliznyy, Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus

Associate Professor; PhD in Technical Sciences, Associate Professor

Yuriy A. Rudchenko, Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus

Deputy Dean; PhD in Technical Sciences, Associate Professor

Mikhail N. Novikov, Sukhoi State Technical University of Gomel; prospekt Oktyabrya, 48, Gomel, 246746, Belarus

Dean; PhD in Technical Sciences, Associate Professor

Denis R. Moroz, Project Scientific Research Republican Enterprise «NII BELGIPROTOPGAZ»; pereulok Domashevskiy, 11A, Minsk, 220036, Belarus

Director; PhD in Technical Sciences, Associate Professor

References

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Published

2017-02-17

How to Cite

Zaliznyy Д., Rudchenko Ю., Novikov М. and Moroz Д. (2017) “Influence of electric potentials from natural gas consumers’ equipmemt to the insulation of gas-mains flange connections”, Journal of Civil Protection, 1(1), pp. 5–12. doi: 10.33408/2519-237X.2017.1-1.5.