A monitoring system for oil and gas pipelines in permafrost regions
A technology for oil and gas pipelines and monitoring systems, applied in measurement devices, heat measurement, instruments, etc., can solve the problems of complex formation mechanism of frost heave and thaw subsidence disasters, different characteristics of frozen soil, and no mature monitoring technology. The effect of networking, reducing construction risks and low cost
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[0054] Embodiment. This example is a kind of test system, and in the permafrost region that the thickness of seasonal frozen soil is 2m, and the frozen soil type is ice-rich and saturated ice, the test is carried out, wherein the buried depth of the pipeline is 2m, the diameter of the pipe body is 813mm, the wall thickness 10mm, steel grade X65.
[0055] The overall composition of the oil and gas pipeline monitoring system in permafrost regions is as follows: figure 1 As shown, the principle block diagram is as Figure 5 shown. A temperature sensor group composed of fiber grating temperature sensor a3, fiber grating temperature sensor b4, and fiber grating temperature sensor c5 is installed on the surface of oil and gas pipeline a2 in permafrost region 1 and its surroundings, and a fiber grating water content sensor a6, Fiber Bragg grating water content sensor b7, fiber Bragg grating water content sensor c8, and fiber Bragg grating water content sensor d9 are composed of a w...
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