Permafrost region oil-gas pipeline ambient temperature monitoring system

A technology for oil and gas pipelines and ambient temperature, which is used in thermometers, thermometer parts, thermometers with physical/chemical changes, etc. Complex mechanism and other problems, to achieve the effect of easy automatic real-time online monitoring, easy networking, and low cost

Active Publication Date: 2013-11-06
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] Although domestic and foreign pipeline operators have taken active measures to deal with frost heaving and thawing disasters in permafrost regions, the formation mechanism of frost heaving and thawing disasters

Method used

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  • Permafrost region oil-gas pipeline ambient temperature monitoring system
  • Permafrost region oil-gas pipeline ambient temperature monitoring system
  • Permafrost region oil-gas pipeline ambient temperature monitoring system

Examples

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Example Embodiment

[0039] Example. This example is a test system, and the test was carried out in a frozen soil area with a seasonal frozen soil thickness of 2m and a frozen soil type rich in ice and ice. The buried depth of the pipeline is 2m, the pipe diameter is 813mm, and the wall thickness It is 10mm, steel grade X65.

[0040] The overall composition of the oil and gas pipeline monitoring system in the frozen soil area is as follows figure 1 As shown, the functional block diagram is as image 3 Shown. Install a temperature sensor group composed of fiber grating temperature sensors 3, 4, 5 on the surface of the oil and gas pipeline 2 in the frozen soil area 1, and all the sensors are fused in series, and then led to the monitoring station through the optical cable 12, the optical cable 12 and the optical switch 13 The optical switch 13 is connected to the fiber grating demodulator 14, and the fiber grating demodulator 14 is connected to the lower computer 15. The data preprocessed by the lower ...

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Abstract

The invention provides a permafrost region oil-gas pipeline ambient temperature monitoring system based on a fiber Bragg grating sensing technology. A fiber Bragg grating temperature sensor set is arranged on the surface and the periphery of an oil-gas pipeline (2) in a permafrost region. All fiber Bragg grating temperature sensors are connected in series in a welding mode and are guided into a monitoring station through an optical cable (12) which is connected with an optical switch (13). The optical switch (13) is connected with a fiber Bragg grating demodulation instrument (14) which is connected with a lower computer (15). Data preprocessed by the lower computer are transmitted to a low orbit satellite (17) through a satellite communication module (16). The low orbit satellite (17) sends the data to a satellite communication module (18) in a forwarding mode. The satellite communication module (18) transmits the received data to an upper computer (19) for analyzing and processing. The permafrost region oil-gas pipeline ambient temperature monitoring system is high in accuracy and stability and low in cost.

Description

technical field [0001] The invention is a temperature monitoring system around oil and gas pipelines in permafrost regions based on fiber grating sensing technology, and relates to the technical fields of length measurement, temperature measurement, other types of measurement, general control systems and pipeline systems. Background technique [0002] Frozen soil is a special kind of soil, the temperature is negative temperature or zero temperature, and the soil containing ice is called permafrost. 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). my country's permafrost is very developed. The permafrost area is about 2.11 million square kilometers, accounting for 23% of my country's total land area and ranking third in the world. The area of ​​permafrost is about 5.14 million square...

Claims

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Application Information

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IPC IPC(8): G01K1/02G01K11/32G01K1/024G01K11/3206
Inventor 马云宾宋宁许斌石蕾张一玲邱红辉孙异吴琼
Owner PIPECHINA SOUTH CHINA CO
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