A pipeline AC interference protection drainage system
A technology of AC interference and flow system, applied in the direction of connecting contact materials, etc., can solve the problems of air resistance effect, limited drainage performance, etc., and achieve good drainage effect and small grounding resistance.
Active Publication Date: 2019-10-11
PETROCHINA CO LTD
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Problems solved by technology
[0005] In order to solve the problem that the drainage performance of the pipeline AC interference protection drainage system is limited in the surface high soil resistivity area, and the deep soil is affected by the air resistance effect, the embodiment of the present invention provides a pipeline AC interference protection drainage system
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Embodiment
[0025] An embodiment of the present invention provides a pipeline AC interference protection drainage system, such as figure 1 As shown, the drainage system includes: a drainer 1 and a draining bed 2, the drainer 1 and the draining bed 2 are arranged at intervals, and the draining bed 2 is electrically connected to the pipeline 3 through the drainer 1 .
[0026] In this embodiment, the distance between the drainage ground bed 2 and the pipeline 3 is greater than 5 m, and the drainage ground bed 2 and the pipeline 3 are respectively located on both sides of the drainer 1 .
[0027] Specifically, the outer contour of the drainage bed 2 may be cylindrical, and the diameter of the drainage bed 2 may be 250mm-350mm, preferably, the diameter of the drainage bed 2 is 300mm.
[0028] In this embodiment, the drainage ground bed 2 includes a well body 21, a prepackaged anode assembly 22, a casing 23 and backfill soil 24 in the well, the prepackage anode assembly 22 is arranged in the we...
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The invention discloses a pipeline AC interference protection drainage system, which belongs to the technical field of petroleum pipelines. The drainage system comprises a drainage device and a drainage bed, wherein the drainage bed is electrically connected with the pipeline through the drainage device; the drainage bed comprises a well body, a pre-packed anode assembly, a casing and backfilled soil in the well; the pre-packed anode assembly is arranged in the well body; the pre-packed anode assembly comprises an outer protective pipe, a conductive filler, an underground cable, a preset protection pipe and multiple anodes; the preset protection pipe is arranged in the outer protective pipe; the top end of the preset protection pipe is communicated with the bottom end of the casing; the top end of the casing extends out of the well body; the underground cable is arranged in the preset protection pipe; a drainage gap is arranged between the underground cable and the preset protection pipe; the top end of the underground cable passes through the casing and is electrically connected with the grounding electrode end of the drainage device; each anode is electrically connected with theunderground cable; and the pipeline end of the drainage device is used for being electrically connected with the pipeline. Generation of gas lock effects is avoided.
Description
technical field [0001] The invention belongs to the technical field of petroleum pipelines, in particular to a pipeline AC interference protection drainage system. Background technique [0002] With the construction of public infrastructure, the number of AC power supply facilities such as electrical systems and high-voltage transmission systems on the surface continues to increase. The AC current generated by these facilities will cause serious AC interference to buried oil and gas pipelines, resulting in AC corrosion. [0003] In order to avoid AC interference, pipeline AC interference protection drainage systems are usually installed on oil and gas pipelines. Common pipeline AC interference protection drainage systems usually include drainers and drainage beds. The drainage beds are divided into shallow buried and deep wells. In two ways, the drainage bed is electrically connected to the oil and gas pipeline through the drainer, so that the AC induction current generated...
Claims
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IPC IPC(8): H01R4/66
Inventor 沈光霁王维斌金哲郭莘胡亚博张宏伟
Owner PETROCHINA CO LTD