Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Development of leakage test facility for leak signal characteristic analysis in water pipeline

상수도관로 누수신호의 특성 분석을 위한 누수 실험시설 개발

  • Park, Sanghyuk (Korea Institute of Civil Engineering and Building Technology) ;
  • Kwak, Philljae (Korea Institute of Civil Engineering and Building Technology) ;
  • Lee, Hyundong (Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Changho (Korea Institute of Civil Engineering and Building Technology)
  • Received : 2017.08.16
  • Accepted : 2017.10.19
  • Published : 2017.10.31
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Abstract

A real scale leakage test facility was developed to study the leak signal characteristics of water supply pipelines, and then leak tests were carried out. The facility was designed to overcome the limited experimental circumstances of domestic water supply pipeline experimental facilities. The length of the pipeline, which was installed as a straight line, is 280m. Six pipes were installed on a 70m interval with different pipe material and diameters that are DCIP(D200, D150, D100, D80), PE(D75) and PVC(D75).The intensity of the leakage is adjusted by changing the size of the leak hole and the opening rate of ball valve. Various pressure conditions were simulated using a pressure reducing valve.To minimize external noise sources which, deteriorate the quality of measured leak signal, the facility was built at a quiet area, where traffic and water consumption by customers is relatively rare. In addition, the usage of electric equipment was minimized to block out noise and the facility was operated using manual mode. From the experimental results of measured leakage signal at the facility, it was found that the signal intensity weakened and the signal of high frequency band attenuated as the distance from the water leakage point increased.

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References

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