scholarly journals A Leak Localization Method of Pipeline by Means of Fluid Transient Model. 2nd Report. Experimental Verification.

1992 ◽  
Vol 58 (551) ◽  
pp. 2158-2164
Author(s):  
Tatsuhiko KIUCHI ◽  
Hisao SATO ◽  
Makoto INABA
Keyword(s):  
Experimental Verification ◽  
Transient Model ◽  
Localization Method ◽  
Fluid Transient ◽  
Leak Localization

Acoustic leak localization method based on signal segmentation and statistical analysis

2021 ◽  
Author(s):  
Georgios-Panagiotis Kousiopoulos ◽  
Nikolaos Karagiorgos ◽  
Dimitrios Kampelopoulos ◽  
Vasileios Konstantakos ◽  
Spyridon Nikolaidis
Keyword(s):  
Statistical Analysis ◽  
Localization Method ◽  
Signal Segmentation ◽  
Leak Localization

An Operation Support System of Large City Gas Networks Based on Fluid Transient Model

1995 ◽  
Vol 117 (4) ◽  
pp. 324-328 ◽  
Author(s):  
T. Kiuchi ◽  
H. Izumi ◽  
T. Huke
Keyword(s):  
Real Time ◽  
Support System ◽  
Large City ◽  
Leak Detection ◽  
Training Simulator ◽  
Transient Model ◽  
Actual Performance ◽  
Fluid Transient ◽  
Operation Support System ◽  
City Gas

This paper describes the essential features and experience of applying a fluid transient model to the operation support system of large city gas pipeline networks. The system, operating in the second largest city, Osaka, in Japan since 1992, includes the functions of a real-time leak detection and localization, a fast predictive computation of the pressure and flow distributions in networks, and an interactive training simulator using a transient model connected with SCADA training system. To achieve fast forecasting calculation in real-time manner, the combined method of a fully implicit transient calculation for high pressure transmission networks and a steady-state calculation for middle pressure distribution networks is developed. The actual performance of real-time leak detection and the accuracy of the forecasting model are discussed.

A dead reckoning localization method for in-pipe detector of water supply pipeline: An application to leak localization

Measurement ◽  
2021 ◽  
Vol 171 ◽  
pp. 108835
Author(s):  
Wenming Wang ◽  
Dashan Yang ◽  
Jifeng Zhang ◽  
Liyun Lao ◽  
Yuanfang Yin ◽  
...  
Keyword(s):  
Water Supply ◽  
Dead Reckoning ◽  
Localization Method ◽  
Leak Localization ◽  
Water Supply Pipeline

A Leak Localization Method of Pipeline by Means of Fluid Transient Model

1993 ◽  
Vol 115 (3) ◽  
pp. 162-167 ◽  
Author(s):  
T. Kiuchi
Keyword(s):  
Flow Rate ◽  
Transient Condition ◽  
Accurate Estimation ◽  
Pipeline System ◽  
Transient Model ◽  
Pressure Profiles ◽  
Fluid Transient ◽  
Abrupt Changes ◽  
Conventional Methods ◽  
Rate Profile

This paper describes a method for estimating the position of a detected leak by applying a fluid transient model to a real-time pipeline system. The method takes into account flow rate and pressure profiles along a pipeline in a transient condition based on an assumption of quasi-steady-state flow. The result of case studies using a hypothetical gas pipeline system shows that, even in a transient condition, the method gives a more accurate estimation of a leak position than conventional methods which do not consider flow rate or pressure profiles along a pipeline. The method is also applicable to a pipeline having consumer stations which cause abrupt changes of flow rate profile along the pipeline. Furthermore, the influence of instrument accuracy on the result of the method is examined. The result also shows the advantage of the method compared to the conventional methods.

A Small Leak Localization Method for Oil Pipelines Based on Information Fusion

2018 ◽  
Vol 18 (15) ◽  
pp. 6115-6122 ◽  
Author(s):  
Xianming Lang ◽  
Ping Li ◽  
Jiangtao Cao ◽  
Yan Li ◽  
Hong Ren
Keyword(s):  
Information Fusion ◽  
Localization Method ◽  
Small Leak ◽  
Oil Pipelines ◽  
Leak Localization

Air Leak Localization Method Based on Infrared Thermography Using Local Gray-Entropy Difference Algorithm

2012 ◽  
Vol 233 ◽  
pp. 200-203
Author(s):  
He Hong Qin ◽  
Tao Wang ◽  
Wei Fan
Keyword(s):  
Infrared Thermography ◽  
Infrared Images ◽  
Thermal Camera ◽  
Air Leak ◽  
Localization Method ◽  
Entropy Information ◽  
Leak Localization ◽  
The Difference

A novel air leak diagnosis and localization method for vessels is proposed. The tempreture field around the leak changes during air inflation and deflation.The changing phenomenon is acquired by thermal camera and the best detecting time is confirmed by temperature curves.Then a local gray-entropy difference algorithm is used to identify the leak area from infrared images captured during inflation and deflation. The gray information of local gray-entropy enhances the difference between leak area and non-leak area largely meanwhile the entropy information of local gray-entropy improves robustness performance.Experiments verify that the leak localization method is effective and sensitive.

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