scholarly journals Numerical analysis of the diffusion effects of combustible gas leak on the leak location

2017 ◽  
Vol 205 ◽  
pp. 3678-3685 ◽  
Author(s):  
Xingquan Li ◽  
Zuotang Wang ◽  
Guansan Tian ◽  
Jian Liu ◽  
Desheng Li
Keyword(s):  
Numerical Analysis ◽  
Combustible Gas ◽  
Leak Location ◽  
Gas Leak ◽  
Diffusion Effects

scholarly journals Gas Leak Location Detection Based on Data Fusion with Time Difference of Arrival and Energy Decay Using an Ultrasonic Sensor Array

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2985 ◽  
Author(s):  
Tao Wang ◽  
Xiaoran Wang ◽  
Mingyu Hong
Keyword(s):  
Data Fusion ◽  
Sensor Array ◽  
Three Dimensional ◽  
Energy Decay ◽  
Ultrasonic Sensor ◽  
Time Difference Of Arrival ◽  
Leak Location ◽  
Gas Leak ◽  
Location Algorithm ◽  
The Individual

Ultrasonic gas leak location technology is based on the detection of ultrasonic waves generated by the ejection of pressured gas from leak holes in sealed containers or pipes. To obtain more accurate leak location information and determine the locations of leak holes in three-dimensional space, this paper proposes an ultrasonic leak location approach based on multi-algorithm data fusion. With the help of a planar ultrasonic sensor array, the eigenvectors of two individual algorithms, i.e., the arrival distance difference, as determined from the time difference of arrival (TDOA) location algorithm, and the ratio of arrival distances from the energy decay (ED) location algorithm, are extracted and fused to calculate the three-dimensional coordinates of leak holes. The fusion is based on an extended Kalman filter, in which the results of the individual algorithms are seen as observation values. The final system state matrix is composed of distances between the measured leak hole and the sensors. Our experiments show that, under the condition in which the pressure in the measured container is 100 kPa, and the leak hole–sensor distance is 800 mm, the maximum error of the calculated results based on the data fusion location algorithm is less than 20 mm, and the combined accuracy is better than those of the individual location algorithms.

A Study on the Development and Accuracy Improvement of an IR Combustible Gas Leak Detector with Explosion Proof

2014 ◽  
Vol 18 (3) ◽  
pp. 1-12 ◽  
Author(s):  
Gyou-Tae Park ◽  
Geun-Jun Lyu ◽  
Young-Do Jo ◽  
Jeong-Rock Kwon ◽  
Sang-Guk Ahn ◽  
...  
Keyword(s):  
Leak Detector ◽  
Accuracy Improvement ◽  
Combustible Gas ◽  
Gas Leak

Using the PIV Techniques in the Expertise of Gas Explosions

Mining Revue ◽  
2021 ◽  
Vol 27 (2) ◽  
pp. 42-48
Author(s):  
Nicolae Ioan Vlasin ◽  
George Artur Găman ◽  
Emilian Ghicioi ◽  
Gheorghe Daniel Floarea ◽  
Adrian Bogdan Șimon-Marinică
Keyword(s):  
Suspended Particles ◽  
Test Stand ◽  
Laser Source ◽  
Cmos Camera ◽  
Fuel Gas ◽  
Combustible Gas ◽  
Physical Experiments ◽  
Gas Leak ◽  
Gas Explosions ◽  
Recording Conditions

Abstract Given the possibilities offered by PIV systems, it was considered appropriate to test them in the study of the formation of explosive atmospheres. In this sense, within the INCD INSEMEX Petroșani laboratories, a test stand was created subject to the conditions of applying PIV techniques. Thus, this stand was built of transparent materials, having the possibility to introduce, in the inner volume, the suspended particles and the combustible gas, being at the same time able to be sectioned by the light plane generated by a laser source and to provide the recording conditions using a CMOS camera. The physical experiments concerned both the situation of a normal atmosphere inside the test stand and the situations of the appearance of a fuel gas leak and an efficient source of initiation of the formed explosive atmosphere.

A Study on HT32F1765 MCU-Based in Smart Home Gas Monitoring

2014 ◽  
Vol 644-650 ◽  
pp. 1298-1302
Author(s):  
Dan Yang Qiao ◽  
Feng Qiang Gao ◽  
Xin Ming Lin ◽  
Zeng Zheng Wang ◽  
Zi Jian Lin
Keyword(s):  
Air Pollution ◽  
Data Exchange ◽  
Indoor Air Pollution ◽  
Gas Sensing ◽  
Rapid Development ◽  
Home Monitoring ◽  
Time Data ◽  
Gas Concentration ◽  
Combustible Gas ◽  
Gas Leak

With the rapid development of today's society, air pollution is becoming one of the hottest topics of humans’ concern. Looking at the daily life, some peoples’ awareness in the dangers of indoor air pollution and household gas safety is not enough, so it may lead to a number of respiratory diseases, or "sub-health" conditions. (Such as influenza, pharyngitis and other diseases) On the other hand, some families, because of a gas leak, has not been timely warning of fires and caused the tragedy. To solve these problems, this work is designed based on low-power microcontroller as the master chip HT32F1765 100LQFP between the various smart sensors and did data exchange with the home environment monitoring system. The HT chip use as the master chip and combined with using Sharp PM2.5 gas sensors, temperature and humidity sensors, gas concentration sensor as gas sensing devices. We use all these sensors as information collection module, to collect the data information of air quality, temperature, humidity and combustible gas concentration in different rooms and different locations. The real-time data acquisition and sensor would be displayed on the touch screen. In addition, the creation of data monitoring hardware devices, as well as match the mobile phone in APP. Our users can log on the APP remotely to view home monitoring information, or to receive alarm information.. Thus, adults can safely work outside, avoiding unnecessary worry.

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