Current-Modulated Cavity Ring-Down Spectroscopy for Mobile Monitoring of Natural Gas Leaks

Mo, Zeqiang; Yu, Jian; Wang, Jinduo; He, Jun; Yang, Lei

doi:10.1109/jlt.2020.3003006

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…Yan et al [7] designed a laser gas leakage monitoring system based on TDLAS and applied it to the gas stations of West-East Pipeline. Mo et al [8] introduced a typical natural gas leakage site inspection process, in which detected the CH4 mainly and took C2H6 as the secondary marker gas, by using a vehicle platform device based on an improved current-modulated cavity ring down spectroscopy (CRDS). In this paper, a sensitive experimental device based on cavity ring down spectroscopy (CRDS) has been developed to measure natural gas leakage in the ambient atmosphere, while a wavelength scanning baseline correction method is proposed for measurement in multicomponent ambient atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Wang

et al. 2023

AOPC 2022: Optical Spectroscopy and Imaging

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Chinese government advocates a low-carbon development and strives to achieve carbon peak and carbon neutralization. It is an important issue to safely allocate and use of natural gas, which is a relatively clean basic energy and owns a huge consumption demand. In this paper, a sensitive experimental device based on CRDS has been developed to measure natural gas leakage in the ambient atmosphere, while a wavelength scanning baseline correction method is proposed for measurement in multicomponent ambient atmosphere. The minimum Allan deviation of the CRDS device with the laser for CH4 detection reaches 9 × 10 -11 cm -1 , corresponding to the NEA of 6.4 × 10 -10 cm -1 Hz -1/2 . The minimum value of Allan deviation becomes 1.1 × 10 -10 cm -1 after replacing the laser for C2H6 detection. The measurement sensitivity of the device for methane and ethane is 0.24 ppbv and 2.44 ppbv respectively. The device is calibrated with 1 ppmv CH4/C2H6 standard gases, and the measurement precision is 4.1/18.6 ppbv respectively. In addition, the concentrations of CH4, H2O and CO2 in the ambient air are measured by the wavelength scanning method, and this method and results can be used to determine the baseline of field measurement in the future.

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Section: Introductionmentioning

confidence: 99%

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Wang

et al. 2023

AOPC 2022: Optical Spectroscopy and Imaging

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“…5 With the requirement of energy safety and environmental protection, traditional manual detection methods can no longer meet the daily inspection requirement of NG pipeline leakage. People began to look for mobile platform-based solutions, including installing sensors on mobile platforms, such as vehicles, 6 aircraft, 7 unmanned aerial vehicles (UAVs), 8 etc., and then combining the measured concentration values with local wind speed information to locate and characterize leakage from open area sources. Mobile measurement of NG leakage inspection based on the vehicle is an economic, practical, and easy-to-accept solution, especially for urban leakage detection.…”

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confidence: 99%

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage

Zheng

et al. 2022

ACS Sens.

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A vehicle-deployed parts-per-billion in volume (ppbv)-level off-axis integrated cavity output spectroscopic (OA-ICOS) CH 4 /C 2 H 6 sensor system was experimentally presented for mobile inspection of natural gas leakage in urban areas. For the time-division-multiplexing-based dual-gas sensor system, an antivibration 35-cm-long optical cavity with an effective path length of ∼2510 m was fabricated with a high-stability temperature and pressure control design. An Allan deviation analysis yielded a minimum detection limit of 0.2 ppbv for CH 4 detection and 10 ppbv for C 2 H 6 detection for a 1 s averaging time. A natural gas leakage source location algorithm was proposed using an improved hybrid Nelder−Mead simplex search method and a particle swarm optimization (NM-PSO) algorithm. For field industrial application, the accuracy of the sensor system and leakage source location algorithm was confirmed through a CH 4 /C 2 H 6 cylinder leakage experiment on the campus. Furthermore, through natural gas pipeline network inspection measurements in urban areas, three types of leakage sources, including natural gas, biogas, and possible leakage source were respectively located and confirmed using the global positioning system and wind speed and direction measurement system, verifying the reliability and potential application of the vehicle-deployed inspection system for future natural gas pipeline leakage monitoring.

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“…The system was demonstrated for high-sensitivity measurements of water vapor isotope with a NEA of 3.7 × 10 −9 cm −1 Hz −1/2 . Mo et al182 reported a mobile vehicle-mounted prototype CRDS system for the field testing of urban natural gas leak inspection in Beijing. The system was designed to measure CH 4 and C 2 H 6 with minimum detection limits of 0.8 and 10 ppb, respectively.…”

mentioning

confidence: 99%

Cavity Ring-Down Spectroscopy: Recent Technological Advancements, Techniques, and Applications

2020

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Current-Modulated Cavity Ring-Down Spectroscopy for Mobile Monitoring of Natural Gas Leaks

Cited by 7 publications

References 42 publications

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage

Cavity Ring-Down Spectroscopy: Recent Technological Advancements, Techniques, and Applications

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Current-Modulated Cavity Ring-Down Spectroscopy for Mobile Monitoring of Natural Gas Leaks

Cited by 7 publications

References 42 publications

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Study on natural gas leakage detection CRDS device and its baseline correction in ambient atmosphere

Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH4/C2H6 Sensor System for Mobile Inspection of Natural Gas Leakage

Cavity Ring-Down Spectroscopy: Recent Technological Advancements, Techniques, and Applications

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Vehicle-Deployed Off-Axis Integrated Cavity Output Spectroscopic CH₄/C₂H₆ Sensor System for Mobile Inspection of Natural Gas Leakage