Detection of leakage in polymeric transmission pipelines with using reflected compress wave of transient flow

Document Type : Research Paper

Authors

1 M.Sc. Student of Department of Water Structurs, Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Iran.

2 Professor, of Department of Water Structurs,Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Iran

Abstract

Introduction
 When a sudden pressure surge is induced in a pipe system, discontinuities like leaks, changes of pipe diameter or material, tee-junctions, local head losses or air pockets, introduce changes in the hydraulic transient event propagation. A leak creates a pressure drop; friction increases pressure damping; a dead-end or a closed-valve reflects totally an incident wave; an air bubble creates a pressure drop followed by a pressure increase.
    The detection of these signals allows their identification and location. The information carried in the transient pressure signal can be used to detect, locate and size leaks, and, eventually, to distinguish these from other features existing in the pipeline.
 
Methodology
Physical model
    The purpose of this study was to find the location and size of leakage in polyethylene transfer pipes using transient flow. Therefore, a laboratory model was developed for this purpose at the Hydraulic Lab of the Faculty of Engineering Sciences of Shahid Chamran University of Ahvaz.

Keywords

Main Subjects

References

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Irrigation Sciences and Engineering
Volume 44, Issue 1
June 2021
Pages 61-75

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History

  • Receive Date: 13 September 2017
  • Revise Date: 09 February 2018
  • Accept Date: 14 February 2018
  • Publish Date: 21 March 2021

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