Natural gas pipelines, as a key infrastructure for energy delivery, methane (CH₄) and ethane (C₂H₆) in municipal pipelines are the focus of monitoring. Laser gas sensing technology provides comprehensive support for safe pipeline operation and quality control by accurately detecting pipeline gas concentration and composition and distinguishing between methane and ethane leak sources and concentrations in real time. This technology provides an important guarantee for efficient natural gas transport and safe management of urban gas pipeline networks.

1. Inspection Equipment: Drones or inspection vehicles equipped with laser sensors can dynamically monitor gas leaks along a wide range of pipelines and differentiate between sources and concentrations of methane and ethane.

2. Fixed-Point Monitoring Equipment: Fixed laser detection devices are installed at key pipeline nodes (e.g., valves, joints) to continuously monitor changes in gas concentration and quickly respond to abnormal situations.

3. Composition and Concentration Analysis: Online analysis equipment can detect the ratio of methane and ethane in the transported gas in real time to ensure the quality of transport while meeting the operational needs of the city gas network.

Traditional Methods: Infrared imaging and acoustic wave detection have limited ability to differentiate between gas types and are slow to respond.

Advantages of Laser Sensing:

• Accurate Species Differentiation: Real-time separation of methane and ethane composition and concentration

• High Sensitivity and Fast Response: Ppm-level gas concentration detection, suitable for early leakage monitoring

• Combination of Dynamic and Fixed Point: Realize full process monitoring, seamless coverage from large-scale inspection to node real-time monitoring