Experimental Validation of Leak and Water-Ingression Detection in Low-Pressure Gas Pipeline Using Pressure and Flow Measurements

Reddy, Ramasubba; Narasimman, S.; Wang, Libo; Ukil, Abhisek

doi:10.1109/jsen.2017.2745577

Cited by 15 publications

(4 citation statements)

References 14 publications

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“…Therefore, we searched the literature to find out the minimum pressure that is required to detect leaked gasses. It was found that two groups, i.e., Ravula et al [35] and Huang et al [36], successfully detect gasses at that range. These data convince us of the possible use of our 3C-SiC diaphragms for detecting poisonous gasses.…”

Section: Suitability Of Elastic Diaphragm As Acoustic Sensormentioning

confidence: 99%

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

et al. 2021

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In this study, 550 nm thick cubic silicon carbide square diaphragms were back etched from Si substrate. Then, indentation was carried out to samples with varying dimensions, indentation locations, and loads. The influence of three parameters is documented by analyzing load-displacement curves. It was found that diaphragms with bigger area, indented at the edge, and low load demonstrated almost elastic behaviour. Furthermore, two samples burst and one of them displayed pop-in behaviour, which we determine is due to plastic deformation. Based on optimum dimension and load, we calculate maximum pressure for elastic diaphragms. This pressure is sufficient for cubic silicon carbide diaphragms to be used as acoustic sensors to detect poisonous gasses.

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Section: Suitability Of Elastic Diaphragm As Acoustic Sensormentioning

confidence: 99%

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

et al. 2021

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“…If there is leakage, the pressure in the cavity will drop after a certain time of reaction. The detection method has the advantages of simple operation, low cost, and fast detection, but limited by the accuracy of pressure sensor; it can only be applied to the field with low accuracy requirements [8,9].…”

Section: Introductionmentioning

confidence: 99%

Analysis on Influence Factors of Differential Pressure Detection of Gas Leakage

et al. 2022

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Pneumatic technology takes compressed gas as the power source, but the leakage of gas in the pipeline due to poor sealing or pipeline rupture affects the accuracy of pneumatic control, the flow of gas transmission, and even the emission of harmful gas. The air tightness of differential pressure method has broad significance in the study of tight leakage because of its simple operation, short detection time, and high precision. Bubbling method, acoustic emission detection method, and direct pressure detection method have the characteristics of difficult operation, environmental sensitivity and low detection accuracy. They are not suitable for effective and high-precision detection of leakage in harsh environment. The air tightness detection method of differential pressure method has the advantages of simple operation, short detection time, and high accuracy. It has extensive significance in the research of air tightness leakage. At present, the focus of differential pressure method is to keep the same charging state of the master tank and the tested tank. However, when the shape of the tested tank is irregular or difficult to copy, the influence of different master tank on differential pressure method leakage detection needs to be considered. In this study, a gas leakage flow calculation model is established. The influence of the inherent parameters of the master tank on the calculation of the pressure difference, temperature difference, and leakage between the two cavities is analyzed in the simulation. Finally, the master tank is set as a quasi-isothermal cavity, and the tested tank is set as 3 L and 5 L air tanks for leakage test. The maximum error of experiment of 3 L tank reaches 39 mL/min at the later stage of measurement, with a detection deviation of 14.4%. The maximum error of experiment of 5 L tank is 412.4 mL/min, with a deviation rate of 28.3%. This method can detect leakage with high precision in harsh environment.

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“…In underground low-pressure gas distribution pipes, groundwater entered the pipeline through cracks. It was known as the problem of water entry and occurred especially in the rainy season when the water level was high [6].…”

Section: Introductionmentioning

confidence: 99%

Gas Pressure Measurement Device and Medical Vacuum Design

Tunggal

Sanjaya

Widodo

et al. 2020

jrc

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Two methods are used in a digital pressure meter available in the market, namely positive pressure, and negative pressure. The positive one is used to measure the air pressure on a sphygmomanometer and medical gas pressure at an outlet in the treatment room so that operators can easily check medical gas pressure for the safety of the patient, or they can routinely check to find out how much pressure of the medical gas. Based on the background, the research aimed to design a digital pressure meter equipped with a medical gas measurement mode so that the device can be used to calibrate the sphygmomanometer, suction pump, and measure the medical gas pressure available at the medical gas outlet in each treatment room.

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Experimental Validation of Leak and Water-Ingression Detection in Low-Pressure Gas Pipeline Using Pressure and Flow Measurements

Cited by 15 publications

References 14 publications

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

The Fabrication and Indentation of Cubic Silicon Carbide Diaphragm for Acoustic Sensing

Analysis on Influence Factors of Differential Pressure Detection of Gas Leakage

Gas Pressure Measurement Device and Medical Vacuum Design

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