计量学报2025，Vol.46Issue(12)：1720-1728,9.DOI:10.3969/j.issn.1000-1158.2025.12.03
一种基于无人机和TDLAS便携式甲烷检测仪的天然气生产场站CH4浓度检测方法
A Method for Detecting CH4 Concentration in Natural Gas Production Station Based on UAV and TDLAS Portable Methane Detector
摘要
Abstract
A portable methane(CH4)detector based on tunable diode laser absorption spectroscopy(TDLAS)technology was developed and mounted on DJI M300 RTK unmanned aerial vehicle(UAV)to carry out stereoscopic monitoring of CH4 concentration at altitude(0～300 m)and on the ground of natural gas production stations in Sichuan Province.The results showed that the CH4 concentration reached the maximum value(2.75±0.19)μmol/mol in the altitude range of 0～100 m,and the leakage of near-earth equipment was the main reason for the increase of CH4 concentration.In the altitude range of 100～300 m,the concentration of CH4 decreased with the increase of altitude.At that time,the atmospheric instability at high altitude and high wind speed promoted the diffusion of CH4.The concentration distribution of CH4 at 30 m and 60 m height was(2.48±0.11)μmol/mol and(2.76±0.34)μmol/mol,respectively.According to the mass balance method,the CH4 emission at 30 m and 60 m is about 0.012 kg/s(±42%,1σ)and 0.034 kg/s(±47%,1σ),respectively.The main reason for the emission calculation error is the uncertainty of wind speed and monitoring data.In the process of ground mobile monitoring,the concentration of CH4 ranges from 3-394.48 μmol/mol,where the connection of the natural gas treatment device is prone to leakage,such as valves,flanges,etc.When there is an open flame at the torch port,CH4 leakage can be detected at the torch port.关键词
碳核算/甲烷排放/无人机/可调谐半导体激光吸收光谱/天然气生产场站/空间分布Key words
carbon accounting/methane emissions/UAV/TDLAS/natural gas production station/spatial distribution分类
通用工业技术引用本文复制引用
汪智文,徐浩楠,胡骏宇,庞小兵,商倩倩,叶潞洁,王韬懿,金磊,王丽玮..一种基于无人机和TDLAS便携式甲烷检测仪的天然气生产场站CH4浓度检测方法[J].计量学报,2025,46(12):1720-1728,9.基金项目
国家自然基金委重大科研仪器研制项目(42327806) （42327806）
浙江省"领雁"研发攻关计划(2022C03073) （2022C03073）
江苏省环境工程技术有限公司研发项目(JSEP-GJ2022-0014-RE-ZL) （JSEP-GJ2022-0014-RE-ZL）
