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A pipeline leakage inspection method

A pipeline and thermal imaging technology, applied in the fields of information, numerical control, surveying and mapping, and mathematics, can solve problems such as low efficiency, time-consuming and labor-intensive, and potential safety hazards for personnel, and achieve the effect of improving accuracy, improving recognition rate, and eliminating external interference

Active Publication Date: 2021-06-25
CHINA NONFERROUS METAL CHANGSHA SURVEY & DESIGN INST CO LTD
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Problems solved by technology

[0002] In order to ensure high-efficiency production and safety requirements, real-time inspection and accident investigation of pipelines for outdoor production and other purposes is a time-consuming and labor-intensive task. At present, manual on-site inspections are mainly used to find and solve problems, which is not only time-consuming and labor-intensive, but also inefficient , for some special areas, such as mountainous areas and other inconvenient areas, it also poses a certain safety hazard to the safety of personnel

Method used

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  • A pipeline leakage inspection method
  • A pipeline leakage inspection method
  • A pipeline leakage inspection method

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Embodiment 1

[0044] Analysis principle of pipeline leakage accident: After the pipeline leaks, the material in the pipe will seep out, pollute the surrounding environment, and cause the color of the surrounding environment to change; the seepage will affect the change of the temperature of the surrounding environment. According to the above two points, the color difference change and the temperature difference change around the pipeline are combined for comparative analysis to obtain the information of the accident location area.

[0045] see figure 1 with figure 2 , a pipeline leakage inspection method, comprising the following steps:

[0046] Step 1: Initialization; determine the pipeline path, obtain the image range and accuracy according to the camera and thermal imager, and carry out initialization information collection along the pipeline path; The object fits the image to a fixed coordinate system; obtains the image information and thermal image information of each position area ...

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Abstract

The invention provides a pipeline leakage inspection method. It includes the following steps: initialization; determining the pipeline path, obtaining image information and thermal image information of each location area of ​​the pipeline in a normal state; acquisition of inspection data; obtaining image information and thermal image information of each location area in real-time state; image information comparison ; thermal image information comparison; image and thermal image weighting; local comparison; exclude external interference, determine the possible location of the leakage accident; manual confirmation. In the present invention, the UAV is equipped with a digital camera, an infrared thermal imager and an external thermometer. The UAV needs to have a real-time positioning function, and the UAV is also equipped with a searchlight, which is convenient for night inspections; digital color photos are obtained by using the UAV inspection. and infrared thermal images; the color difference of the picture is combined with the temperature difference, and weighted processing is carried out to greatly improve the recognition rate; through local comparison, external interference is further eliminated, and the accuracy of leak location confirmation is improved.

Description

technical field [0001] The invention relates to the technical fields of information, numerical control, surveying and mapping, and mathematics, in particular to a pipeline leakage inspection method. Background technique [0002] In order to ensure high-efficiency production and safety requirements, real-time inspection and accident investigation of pipelines for outdoor production and other purposes is a time-consuming and labor-intensive task. At present, manual on-site inspections are mainly used to find and solve problems, which is not only time-consuming and labor-intensive, but also inefficient , For some special areas, such as mountainous areas and other inconvenient areas, it also poses a certain safety hazard to the safety of personnel. In order to detect and deal with pipeline accidents early, avoid or reduce the impact of pipeline accidents on production and damage to the surrounding environment, an efficient automatic inspection system is needed. [0003] With th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G01M3/04F17D5/02G06K9/00G06K9/46G06K9/54
CPCG01J5/00G01M3/002G01M3/04F17D5/02G01J2005/0077G01J5/48G01J5/80G06V20/194G06V20/182G06V10/462G06V10/20
Inventor 杜年春黄毅沈向前廖超谢翔朱洁霞
Owner CHINA NONFERROUS METAL CHANGSHA SURVEY & DESIGN INST CO LTD
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