Method and device for locating chemical gas leaks using mobile sensors

Abstract

The invention discloses a method and equipment for locating a chemical gas leakage point by using a mobile sensor. The adjoint method is applied to quickly calculate the distribution of the gas diffusion influence coefficient and provide quantitative basis for the location of the leakage point; the distribution information of the gas diffusion influence coefficient is used to apply the correlation based The optimal fitting algorithm of the coefficient is used to locate and calculate the leakage point; the method and equipment comprehensively utilize the information of the chemical gas concentration sensor and the meteorological sensor, apply the physical law of gas diffusion, and cleverly use the adjoint method and the correlation coefficient fitting algorithm Improve the calculation efficiency, improve the location accuracy and speed of the leak point as a whole; combine the sensor monitoring data, meteorological data, and gas diffusion law to improve the location efficiency of the gas leak point; use the positioning algorithm to narrow the search range and reduce the on-site inspection time of personnel. Reduce security risks.

Description

technical field [0001] The invention belongs to the technical field of chemical industry safety, and in particular relates to a method and equipment for locating chemical gas leakage points by using a mobile sensor. Background technique [0002] The location of chemical gas leakage is an important technology for the investigation and prevention of potential safety hazards in the chemical industry. Commonly used leak location methods such as the LDAR method are to use monitoring instruments to inspect chemical storage facilities or transmission pipelines point by point to find leak points. This method is time-consuming and laborious, and it is difficult to implement it frequently for large-scale chemical parks. Another method is to install a gas sensor. When a gas leak in the air is detected, an alarm will be triggered to prompt security personnel to conduct on-site investigation. Due to reasons such as cost and technical process, the distribution density of sensors cannot b...

AI Technical Summary

Problems solved by technology

Due to reasons such as cost and technical process, the distribution density of sensors cannot be increased infinitely, and the leak point and the sensor are often not coincident. It is still time-consuming and laborious to locate the leak according to the alarm information. The risk is also increasing

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