Effect of rubber washers on leak location for assembled pressurized liquid pipeline based on negative pressure wave method

Chen, Qiang; Shen, Guodong; Jiang, Juncheng; Diao, Xu; Wang, Zhirong; Ni, Lei; Dou, Zhan

doi:10.1016/j.psep.2018.07.023

Cited by 67 publications

(20 citation statements)

References 30 publications

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“…Similarly, precise determination of the leak location using time difference in pressure wave detection at the two ends of pipeline is another critical challenge of this method. In order to alleviate this shortcoming, several efforts have been devoted to improving the leak detection and localisation mechanisms using NPW [23,136,137]. Identification of the signal that indicates a leak and normal pipeline operation using structure pattern recognition was proposed by [138].…”

Section: Interior/computational Methodsmentioning

confidence: 99%

“…Several pipeline leak detection methods have been proposed during the last decades using different working principles and approaches. Existing leakage detection methods are: acoustic emission [13,14,15], fibre optic sensor [16,17,18], ground penetration radar [19,20], negative pressure wave [21,22,23], pressure point analysis [24,25,26], dynamic modelling [27,28], vapour sampling, infrared thermography, digital signal processing and mass-volume balance [29,30,31,32,33]. These methods have been classified using various frameworks.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Pipeline Monitoring and Oil Leakage Detection Technologies: Principles and Approaches

Adegboye

Fung

Karnik

2019

Sensors

291

144

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Pipelines are widely used for the transportation of hydrocarbon fluids over millions of miles all over the world. The structures of the pipelines are designed to withstand several environmental loading conditions to ensure safe and reliable distribution from point of production to the shore or distribution depot. However, leaks in pipeline networks are one of the major causes of innumerable losses in pipeline operators and nature. Incidents of pipeline failure can result in serious ecological disasters, human casualties and financial loss. In order to avoid such menace and maintain safe and reliable pipeline infrastructure, substantial research efforts have been devoted to implementing pipeline leak detection and localisation using different approaches. This paper discusses pipeline leakage detection technologies and summarises the state-of-the-art achievements. Different leakage detection and localisation in pipeline systems are reviewed and their strengths and weaknesses are highlighted. Comparative performance analysis is performed to provide a guide in determining which leak detection method is appropriate for particular operating settings. In addition, research gaps and open issues for development of reliable pipeline leakage detection systems are discussed.

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Section: Interior/computational Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Pipeline Monitoring and Oil Leakage Detection Technologies: Principles and Approaches

Adegboye

Fung

Karnik

2019

Sensors

291

144

View full text Add to dashboard Cite

show abstract

“…Wavelet transform has an adjustable resolution in the time domain and frequency domain, which can effectively obtain the detailed information of the signal. This method has the ability to extract the position of signal mutation [21]. However, the process of wavelet analysis is not adaptive and the results may be unstable.…”

Section: Introductionmentioning

confidence: 99%

Application of VMD in Pipeline Leak Detection Based on Negative Pressure Wave

2021

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Leakage problems are common in the water supply pipeline system, which will threaten the health of residents and cause economic losses. Negative pressure wave (NPW) technology calculates the time difference through the inflection point to locate the leak. However, due to the nonlinear and nonstationary characteristics of the pressure signal, it is difficult to obtain an accurate inflection point of the NPW by the traditional method. Therefore, the advantages of applying variational mode decomposition (VMD) in NPW technology are explored. Firstly, the correlation coefficient and permutation entropy (PE) are used for effective intrinsic mode function (IMF) component selection and parameter optimization. Thus, an adaptive denoising method based on VMD (AD-VMD) is presented. Then, to effectively separate the detail features of the NPW, a novel inflection point extraction method based on VMD (IPE-VMD) is proposed. Simulation and experimental results show that AD-VMD can effectively suppress noise interference and conserve the mutation characteristic of the leakage. IPE-VMD can obtain a distinct maximum peak at the inflection point and has good robustness to noise interference. This method can calculate the time difference precisely and stably. In addition, the accuracy of the leak location is verified. The average relative positioning error is 5.13%.

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“…Further, influences of the diameter and pressure of the pipe, hydrogen sulfide content and wind speed on diffusion were also investigated within the actual terrain. Chen et al [17] put forward one numerical approach for calculating the pressure wave propagation velocity within the liquid piping. This improved method enhanced the accuracy in predicting the leakage location of the assembled pressure liquid piping.…”

Section: Introductionmentioning

confidence: 99%

Simulation and analysis of buried pipe heat transfer performance under leakage state

et al. 2021

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Buried pipe leakage can lead to poor heat transfer performance and even system failure. Leakage analysis of buried tube greatly affects the operation condition diagnosis for the heat exchange in buried tube. In this study, the simulation software was applied in analyzing heat transfer process and efficiency of the buried pipes under different leakage conditions. Moreover, changes in outlet temperature, water pressure and flow rate were simulated at different positions and diverse sizes of the leakage port. According to our results, the size of leakage port greatly affected the parameter variation of the outlet port when the system started and stopped, thus affecting the cooling effect. In addition, position of the leakage port also had obvious influence on the physical state of the outlet water.

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Effect of rubber washers on leak location for assembled pressurized liquid pipeline based on negative pressure wave method

Cited by 67 publications

References 30 publications

Recent Advances in Pipeline Monitoring and Oil Leakage Detection Technologies: Principles and Approaches

Recent Advances in Pipeline Monitoring and Oil Leakage Detection Technologies: Principles and Approaches

Application of VMD in Pipeline Leak Detection Based on Negative Pressure Wave

Simulation and analysis of buried pipe heat transfer performance under leakage state

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