Karafan Journal

Karafan Journal

An applied study aimed at reducing gas leakage from the low-pressure section of natural gas regulators using numerical simulation

Document Type : Original Article

Authors
seyed sharafoddin hosseini 1
Mehdi Miansari 2
seyed kazem ebrahimnia 3
Mehdi Eisapour 4
1 Department of Mechanical Engineering, National University of Skill (NUS), Tehran, Iran
2 Department of Mechanical Engineering, Skill national University (NUS), Tehran, Iran
3 Mechanical Engineer, Amin Gas Pooya Co. Babol. Iran
4 Mechanical Engineer, Mazandaran Gas Company, Sari, Iran
10.48301/kssa.2025.477636.2990
Abstract
Natural gas, as a national asset and a vital energy source, requires preservation and prevention of waste. One of the main points of gas leakage is the low-pressure section of city gas regulators, where the accumulation of suspended particles in the diaphragm and malfunctioning lead to energy waste and economic damage. This study, in collaboration with the Gas Company of Mazandaran province, aims to reduce gas leakage through numerical simulation, design, and construction of optimized regulator prototypes. In this research, the effect of using flow-directing obstacles on reducing particle accumulation and improving flow distribution in the low-pressure section has been examined. Simulation results showed that the curved barrier model with an inlet-facing curvature could optimize the fluid flow path and reduce gas leakage by up to 25%. Furthermore, experimental results demonstrated that this model effectively prevents particle accumulation in the diaphragm seat and ensures stable regulator performance. By providing an innovative solution, this research fills a scientific gap in reducing gas leakage caused by suspended particles and makes a significant contribution to energy consumption optimization.
Keywords
Gas regulator
gas leakage
gas consumption optimization
numerical simulation
diaphragm
Subjects
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Karafan Journal
Volume 22, Issue 3
Technical and Engineering
Autumn 2025
Pages 65-86

  • Receive Date 10 September 2024
  • Revise Date 18 January 2025
  • Accept Date 22 April 2025