Natural gas leakage detection method and detection device

• Main Authors: XU YAHUI, LI YILIN, ZHANG XINHUA
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a natural gas leakage detection method and device, and the method comprises the following steps: (1), a sampling module sends a to-be-detected gas into a gas absorption cell, a laser emits specific infrared laser with a first wavelength and a second wavelength, and the infrared laser can be absorbed by methane and ethane in the to-be-detected gas, the infrared laser receiving module detects infrared laser absorbed by the gas to be detected, converts the infrared laser into a detection electric signal and sends the detection electric signal to the data processing module, if natural gas leakage can be judged and an alarm condition is met, the alarm module is started, and if natural gas leakage cannot be judged, the step (2) is executed; the sampling module sends to-be-detected gas into the methane and ethane analysis column and then respectively sends the methane and ethane analysis column into the gas absorption cell to sequentially obtain independent electric signals corresponding to