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Prevention and control system for pipelines in permafrost regions

A technology for permafrost areas and pipelines, which is applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc. temperature, the effect of avoiding pipe deformation

Active Publication Date: 2021-05-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The permafrost thaw settlement monitoring system provided by the prior art can only predict the permafrost thaw settlement, but cannot prevent the permafrost thaw settlement, and cannot prevent the pipeline from deforming when the permafrost thaw settlement occurs

Method used

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  • Prevention and control system for pipelines in permafrost regions
  • Prevention and control system for pipelines in permafrost regions

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Embodiment Construction

[0044] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] An embodiment of the present invention provides a prevention and control system for pipelines in permafrost regions, such as figure 1 As shown, the control system includes two control devices, among which, such as figure 2 As shown, the prevention and control device includes a ventilation support pipe 1 and a fixing piece 2, wherein the ventilation support pipe 1 is made of a heat-conducting material; Both sides of the pipe X; the middle part of the ventilation support pipe 1 is sunken downward and passes through the soil below the pipe X.

[0046] The working principle of the prevention and control system for pipelines in permafrost regions provided by the embodiments of the present invention is described below:

[0047] When applied, such a...

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Abstract

The present invention provides a prevention and control system for pipelines in permafrost regions. The prevention and control system includes at least one prevention and control device, wherein each of the prevention and control devices includes a ventilation support pipe and a fixing piece, wherein the ventilation support pipe is made of heat-conducting material Made; the two ends of the ventilation support pipe communicate with the opening, and the two ends are respectively fixed above the ground by the fixing parts and are respectively located on both sides of the pipe; the middle part of the ventilation support pipe is sunken downward and passes through the the soil beneath the pipeline. The prevention and control system of the pipeline in the frozen soil area provided by the invention can reduce the temperature of the frozen soil around the pipeline, and can prevent the pipeline from sinking when the frozen soil thaws and settles.

Description

technical field [0001] The invention relates to the technical field of oil and gas transportation, in particular to a prevention and control system for pipelines in permafrost regions. Background technique [0002] Frozen soil is soil with negative temperature or zero temperature and containing ice. According to the length of the frozen state of the soil, frozen soil can generally be divided into short-term frozen soil (a few hours to half a month), seasonal frozen soil (half a month to several months) and permafrost (more than two years). Due to the difference in density between water and ice, the volume of permafrost expands when it freezes, and shrinks when it thaws, showing the characteristics of "frost heaving and thawing settlement". Permafrost is widely distributed in the three northeastern provinces of my country, Inner Mongolia, Qinghai, and Tibet. When building oil and gas pipelines in these provinces, it is inevitable to lay gas and oil pipelines in the seasonall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/02F17D5/00
CPCF17D1/02F17D5/00
Inventor 施宁蔡永军马云宾李亮亮白路遥刘冰曹燕赵帅安顺陈胜陈恺祺
Owner PETROCHINA CO LTD