Digital pipeline weld joint positioning device and positioning method

Abstract

The invention discloses a digital pipeline weld joint positioning device which comprises a shell, wherein a GPS positioning device is arranged inside the shell; a power supply and an on-off switch are connected with the GPS positioning device. A digital pipeline weld joint positioning method is adopted for positioning weld joints among sections of a pipeline. In weld joint positioning, the digital pipeline weld joint positioning device is placed at a weld joint to be positioned, the GPS positioning device is powered on, and then the position data of the weld joint can be recorded. As the GPS positioning device is adopted for weld joint positioning, accurate and efficient positioning can be achieved, GPS data of the weld joint can be obtained, digital weld joint position data can be obtained after related software processing, and a digital pipeline information bank can be formed with various types of information of the detected pipeline correspondingly.

Description

technical field [0001] The invention relates to a digital positioning device and a positioning method for pipeline welds, and belongs to the technical field of pipeline non-destructive testing. Background technique [0002] There are a large number of buried pipelines in modern industry, such as oil and gas transmission, municipal sewage, municipal water supply, long-distance water supply and other pipelines. In order to ensure the safety of pipelines, these pipelines are not only tested before use, but also tested after being put into use. Regular inspection and maintenance are required, especially oil and gas pipelines or other flammable and explosive pipelines, and there are a large number of process pipelines in the factory. The welds of these pipelines also need to undergo the above-mentioned inspections. For road inspection, the position of the weld seam must be clear and accurate, otherwise it will lead to missed inspection of the weld seam and cannot obtain reliable ...

AI Technical Summary

Problems solved by technology

[0002] There are a large number of buried pipelines in modern industry, such as oil and gas transmission, municipal sewage, municipal water supply, long-distance water supply and other pipelines. In order to ensure the safety of pipelines, these pipelines are not only tested before use, but also tested after being put into use. Regular inspection and maintenance are required, especially oil and gas pipelines or other flammable and explosive pipelines, and there are a large number of process pipelines in the factory. The welds of these pipelines also need to undergo the above-mentioned inspections. For road inspection, the position of the weld seam must be clear and accurate, otherwise it will lead to missed inspection of the weld seam and cannot obtain reliable test results, and cannot guarantee the safe use of the pipeline. This kind of missed inspection may sometimes lead to fatal accidents. Sex is related to the safety of people's life and property

In the current construction of buried pipelines, it is first necessary to weld a certain length of short section steel pipes into a long section. Welding is carried out between the long sections, and the welds between the long sections are detected by external shooting, so the welds on the pipeline include the welds on the long sections that have been tested by the pipeline inspection instrument, and the welds between the long sections Welding seams, these welding seams need to be inspected by external photography in the subsequent use. At present, the way to locate these welding seams is that the construction personnel number each welding joint and draw the pipeline diagram manually. However, manual drawing cannot achieve high Accuracy, especially for the above-mentioned long joints detected by the pipeline crawler, since the welding, testing, anti-corrosion, and heat preservation of each long joint are usually completed on the ground, the position on the ground is recorded when manually recording the position of the weld , after each long section is lowered into the trench or installed in other locations, it is necessary to manually correct the position of each weld according to the displacement data of the pipeline. Seam correspondence misalignment

In addition, manual recording of the weld position cannot avoid some mistakes, resulting in inaccurate drawings, and the corresponding weld position cannot be found when problems occur later.

For buried pipelines, the inaccurate labeling of weld positions often leads to excessive excavation area when maintenance and inspection are required in the later stage, which not only requires large manpower and material resources, but also affects the handling of emergency affairs in some cases The impact of excavation on urban traffic is also great, which has increasingly caused dissatisfaction among the people, so the accurate marking of the weld position will have a great impact on some later work, and the above-mentioned manual positioning method of the weld position cannot Matching the interface of modern digital processing equipment, data processing is time-consuming and laborious, and the response is slow when problems occur. It cannot adapt to the current development needs of pipeline digitalization and information management. Therefore, we urgently need a convenient, efficient and accurate welding joint position positioning and Device and method for automatic generation of single-line diagram of welding joint

Images