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Method and equipment for actively searching and positioning chemical gas leakage point

A technology for searching and positioning and chemical gases, which is applied in meteorology, scientific instruments, climate sustainability, etc., can solve the problems that the distribution density of sensors cannot be increased infinitely, the danger of on-site personnel increases, time-consuming and labor-intensive, etc., and achieve the improvement of automation Horizontal and precise positioning capabilities, reduced investigation time, and the effect of reducing safety risks

Inactive Publication Date: 2020-04-17
北京众蓝科技有限公司
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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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  • Method and equipment for actively searching and positioning chemical gas leakage point
  • Method and equipment for actively searching and positioning chemical gas leakage point
  • Method and equipment for actively searching and positioning chemical gas leakage point

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Embodiment Construction

[0043] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0044] A method for actively searching and locating chemical gas leakage points according to the present invention, the principle of the search and locating algorithm is as follows:

[0045] The chemical gas comes out from the leak point and diffuses in the air, forming a plume-like concentration distribution around the leak point, such as attached figure 2 shown. Its main features are as follows:

[0046] 1. The concentration near the leakage point is high, and the surrounding concentration gradually decreases;

[0047] 2. The concentration drops in different directions at different speeds. The downwind direction drops slowly, and a concentration axis is formed in the downwind direction; the sidewind direction drops faster; the upwind direction drops the fastest.

[0048] Using the above rules, design the following search algorithm.

[0049] Step 1. ...

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Abstract

The invention discloses a method and equipment for actively searching and positioning a chemical gas leakage point. The diffusion effect of chemical gas is considered; the searching direction is determined according to the concentration distribution rule of smoke plume formed by chemical gas leakage, the mobile platform is driven to carry the sensor to approach a leakage source, a gas leakage point is positioned, the calculation efficiency is improved by applying a gradient searching algorithm, and the leakage point troubleshooting automation level and the accurate positioning capacity are improved on the whole. The method can be used for processing the positioning search under the condition of more than one leakage point in a complex factory environment. Through a positioning algorithm and active search, the search range is reduced, the personnel on-site troubleshooting time is reduced, and the safety risk is reduced. When the space of a plant area is large or a physical isolation belt exists in the plant area, a single device is difficult to traverse the whole plant area, and in order to improve the positioning efficiency, more than two sets of device partitions can be used for monitoring and positioning.

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 actively searching and locating chemical gas leakage points. 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 density of sensors cannot be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02G01N33/00G01W1/02
CPCG01M3/02G01N33/0067G01W1/02Y02A90/10
Inventor 刘峰程超桑萌李军贾智彬
Owner 北京众蓝科技有限公司
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