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Hydrogen-containing natural gas pipeline leakage monitoring and positioning method and system

A natural gas pipeline and positioning method technology, which is applied in the field of gas pipeline leakage monitoring, can solve the problems of low detection sensitivity and false alarms of small leaks, and achieve the effects of self-inspection of system failure problems, good system performance, and accurate positioning accuracy

Pending Publication Date: 2021-07-13
CNOOC GAS & POWER GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, natural gas pipeline leakage monitoring uses a variety of technical means such as infrasonic waves and optical fibers. However, these monitoring methods are indirect detection methods such as sound, light, and heat. Interference from external signals is likely to cause false alarms. lower

Method used

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  • Hydrogen-containing natural gas pipeline leakage monitoring and positioning method and system

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Embodiment 1

[0024] This example discloses a hydrogen-containing natural gas pipeline leak monitoring positioning method, such as figure 1 As shown, including the steps of laying at least two detection tubes along the hydrogen-containing gas pipeline 1, in this embodiment, two detection tubes are provided for explanation. The two detection tubes are named the first detection tube 2 and the second detection tube 3, and the axes of the two detection tubes are parallel to the axis of the hydrogen-containing natural gas pipeline 1, and the first detection tube 2 is laid in the hydrogen-containing natural gas pipeline 1. At the middle of the upper intermediate position, the second detection tube 3 is laid in the left intermediate position of the hydrogen-containing natural gas pipeline 1. It should be noted that the above-described detection pipe laying position is only the preferred position in the present embodiment, and the detection tube can also be laid in other locations as long as the leak d...

Embodiment 2

[0032] Based on the same inventive concept figure 1 As shown, the present embodiment discloses a hydrogen-containing gas pipeline 1 leak monitoring positioning system for achieving the hydrogen-containing natural gas pipeline 1 leak monitoring positioning method, including:

[0033] At least two detection tubes, carrier gas modules, first monitoring station, second monitoring station, and data analysis station, at least two detection tubes are arranged in a direction parallel to the axis of hydrogen-containing natural gas pipeline 1 for detecting The concentration of the leakage gas leaking out in the hydrogen gas pipeline 1;

[0034] The carrier gas module is used to pass the carrier gas to the detection tube, and the leakage gas is allowed to enter the monitoring station through the carrier gas;

[0035] The first monitoring station and the second monitoring station are used to monitor the concentration of leakage gas from the first monitoring tube and the second monitoring tube...

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Abstract

The invention relates to a hydrogen-containing natural gas pipeline leakage monitoring and positioning method and system. The method comprises the following steps that at least two detection pipes are laid along a pipeline, and a leaked gas is entered to the detection pipes when the pipeline leaks; after a preset time interval, carrier gas is introduced into one of the detection pipes, leaked gas in the detection pipes enters a first monitoring station along with the carrier gas, the first monitoring station judges whether the concentration of the leaked gas exceeds a threshold value range or not, and a data analysis station calculates the leakage position in the pipeline; then, the carrier gas is introduced into the other detection pipe, the concentration of leaked gas in the carrier gas is judged through a second monitoring station, and the leakage position in the pipeline is calculated through the data analysis station; and the final leakage gas concentration and leakage position are obtained according to the leakage gas concentration and leakage position obtained for the first time and the second time. According to the hydrogen-containing natural gas pipeline leakage monitoring and positioning method, the problems in the prior art can be solved, and the requirements of high leakage monitoring sensitivity, high positioning accuracy, low missing report rate and low false alarm rate of the hydrogen-containing natural gas pipeline can be met.

Description

Technical field [0001] The present invention relates to a hydrogen-containing natural gas pipeline leak monitoring positioning method and system, which belongs to the field of gas pipeline leak monitoring. Background technique [0002] Hydrogen is an important direction of energy low carbon cleaning development. Hydrogen transport is a key link of a hydrogen energy industry chain. Hydrogen is directly incorporated into existing natural gas pipelines, forming hydrogen-containing natural gas delivery, this way to achieve large-scale transport of hydrogen in the current stage Best way, currently some of the hydrogen-containing natural gas pipelines at home and abroad. However, since hydrogen has a low density, proliferation, flammable and explosive characteristics, and the presence of hydrogen has increased the risk of hydrogen-containing natural gas pipelines. Once leaks, huge casualties will cause huge casualties and Economic losses. Hydrogen-containing gas pipeline technology is ...

Claims

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Application Information

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IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 张瑜王秀林侯建国付子航侯海龙姚辉超穆祥宇隋依言王睿
Owner CNOOC GAS & POWER GRP
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