A method for simulating the entire leaking process and calculating the liquid leakage volume of a damaged pressurized pipeline

He, Guoxi; Liang, Yongtu; Li, Yansong; Wu, Meng‐Yu; Sun, Liying; Xie, Cheng; Li, Feng

doi:10.1016/j.jhazmat.2017.02.039

Cited by 68 publications

(23 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bailey et al [11] discovered 3 regions at the leakage-soil interface, namely, the fluidized area out of the leakage, in which the particles moved to the terminal water head at a high speed; the moving bed area, in which the tightly bound particles slowly moved to the starting point of the jet; and the static bed area. He et al [12] established a calculation model regarding leakage flow rate and leakage volume. In addition, the steady-state oil leakage model was adopted for determining the main factors that affected the leakage coefficient of orifice plate and for calculating the flow rate.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Pipelines are critical infrastructure to a country's economy for oil transportation. However, owing pipeline aging, corrosion and destruction of the third parties, pipeline leak accidents often occur [1][2][3][4][5]. For the transport of certain hazardous substances (such as natural gas and hydrogen), pipeline leaks frequently result in serious safety accidents [6,7].…”

Section: Introductionmentioning

confidence: 99%

Pipeline Leak Detection and Location Based on Model-Free Isolation of Abnormal Acoustic Signals

et al. 2019

View full text Add to dashboard Cite

Pipeline leaks will lead to energy waste, environmental pollution and a threat to human safety. This paper proposes a pipeline leak detection and location method based on the model-free isolation of abnormal (leak and operation) signals. An acoustic signal is first decomposed into “sub-signals” according to its zero-crossing points. Then, based on the definition of signal-to-noise ratio (SNR), the function between the SNR of sub-signal and the number of abnormal sub-signals is established, following which the position of each abnormal sub-signal in the acoustic signal is obtained by tracing its index. Based on this and the cross-correlation analysis, the operation sub-signals can be filtered, which is helpful for the precise leak location. The experimental results demonstrate the computational efficiency and lower false/missing alarm rate of the proposed method that provides an innovative solution for pipeline leak detection.

show abstract

“…Kim [13] deduced the frequency domain response function based on the impedance method and analyzed the influences of parameters such as leakage, friction coefficient, wave velocity, pipe length, and valve closing time. He and Ayadi [14,15] constructed a mathematical model of the pipeline transient flow, and the influence of the unbalanced friction was considered. Particularly in real pipe systems, the technique used to generate pressure waves plays a crucial role.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Transient Characteristics of Water Pipeline Leakage with Different Bending Angles

QiaoLing

Yang

et al. 2019

Water

View full text Add to dashboard Cite

Rapid global development has resulted in the widespread use of water pipelines in industrial and agricultural production and life. During water transportation and deployment, water pipes with different angles need to be positioned according to different geographical and topographical problems. Flowmaster simulation software was used to simulate the leakage process of pipelines with different angles. The transient characteristics of fluids in the pipeline were studied in detail. The influences of parameters, such as the bending coefficient R/D (R is the turning radius of pipe, D is the inner diameter of pipe), leakage position, and leakage aperture on the transient flow law of pipelines with and without leakage, were analyzed. The results show that the periodic decay of the upstream flow and pressure curve at the valve with and without leakage has an insignificant relationship with the bending coefficient R/D; however, the amplitude of the sudden position change is positively correlated with the magnitude of R/D. The leakage aperture is positively correlated with the leakage flow and negatively correlated with the pressure value at the leak location node. The farther the leak position is from the valve, the greater the amplitude of the valve end pressure and the upstream flow curve, and symmetric fluctuations occur.

show abstract

A method for simulating the entire leaking process and calculating the liquid leakage volume of a damaged pressurized pipeline

Cited by 68 publications

References 32 publications

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

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

Pipeline Leak Detection and Location Based on Model-Free Isolation of Abnormal Acoustic Signals

Simulation of the Transient Characteristics of Water Pipeline Leakage with Different Bending Angles

Contact Info

Product

Resources

About