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http://dx.doi.org/10.15683/kosdi.2020.3.31.144

A Fundamental Study on Leak Detection System for Water Supply Valve Using Smart Bolt  

Park, Chul (Daum Engineering Co., Ltd)
Kim, Young-seok (Daum Engineering Co., Ltd)
Jung, Hae-Wook (Woori Engineering Co., Ltd)
Choi, Sang-sik (Daum Engineering Co., Ltd)
Lee, Yong-Beom (Woori Engineering Co., Ltd)
Publication Information
Journal of the Society of Disaster Information / v.16, no.1, 2020 , pp. 144-154 More about this Journal
Abstract
Purpose: This paper is a fundamental study on the applicability of the smart bolt developed for monitoring system to detect the leakage of water supply valve. Method: A leak detection experiments were conducted using the smart bolt having embedded strain sensors and accelerometer. The smart bolt used in study meets the allowable criteria of torque and tensile stress for water supply system, and it can be applied to a joint of the water supply valve by behaving well within the allowable limits. Result: As a result of the simulated leak tests, a leak signal at the valve leak point was detected in a band of 60Hz, and the main pipe leaking point was observed to produce a leak signal having much higher frequency than that of the valve leak point. This seems to result in a total coupled vibration under unconfined conditions of the pipes. Conclusion: The smart bolts appeared applicable to detecting a leaking signal from the water supply valve.
Keywords
Water Supply Valve; Leak Detection; Strain Sensors; Accelerometer; FFT Analysis; Smart Bolt;
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