A method and device for automatically searching and locating leakage points of chemical transportation pipelines
A technology for searching and locating and leaking points, which is applied in the field of automatic searching and locating leakage points of chemical transportation pipelines, which can solve the problems of increasing the danger of on-site personnel, the inability to increase the distribution density of sensors indefinitely, and time-consuming and labor-intensive problems.
Active Publication Date: 2021-04-27
中国人民解放军陆军防化学院 +1
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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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[0034] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0035] The equipment of the present invention is divided into a sensor search and positioning module and an orbital mobile platform, as attached figure 1 shown. The sensor search and positioning module includes chemical gas concentration sensors, meteorological element sensors and calculation positioning systems. The gas concentration sensor can obtain the concentration of a specific gas in real time, and the meteorological element sensor can obtain meteorological data such as wind direction, wind speed, and temperature in real time. When the concentration exceeds a certain limit, the sensor will activate the alarm function, and use the calculation and positioning system to conduct search and positioning calculations by integrating concentration data, meteorological data, and mobile platform position and time information. The calculation and positioning ...
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The invention discloses a method and equipment for automatically searching and locating leakage points of chemical transportation pipelines. The adjoint method is used to quickly calculate the distribution of gas diffusion influence coefficients and provide quantitative basis for the location of leakage points. Using the distribution information of gas diffusion influence coefficients, the application based on The optimal fitting algorithm of the correlation coefficient is used to locate and calculate the leak point; the sensor monitoring data, meteorological data, and gas diffusion law are combined to improve the efficiency of gas leak point location. Reduce safety risks; the method and equipment comprehensively utilize the difference in information obtained by moving the chemical gas concentration sensor and the meteorological sensor to different positions, apply the physical law of gas diffusion plume distribution, and cleverly use the adjoint method to improve calculation efficiency, which improves overall Leak location accuracy and location speed.
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 automatically searching and locating leakage points of chemical transportation pipelines. 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. [0003] Commonly used leak location methods, such as LDAR method, 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 leaking gas 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...
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IPC IPC(8): G01M3/02G01N33/00G01W1/02
CPCG01M3/02G01N33/0063G01W1/02
Inventor 黄顺祥刘峰杨炜迪关彩虹张爱红桑萌程超
Owner 中国人民解放军陆军防化学院