Test device and method for simulating natural gas leakage in soil

A test device, natural gas technology, applied in the direction of measuring the increase and decrease rate of fluid, using liquid/vacuum degree for liquid tightness measurement, etc., can solve the problem of inability to calibrate the combustible gas probe online, not fully conforming to the actual application background, and not being able to Simulate the size and direction of leak hole pressure gradient

Active Publication Date: 2014-04-09
TSINGHUA UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

The above two articles first used indoor full-scale experimental devices, which did not fully conform to the actual application background; second, the two articles did not use gas buffer cylinders, which could not simulate the size and direction of the real pres

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  • Test device and method for simulating natural gas leakage in soil
  • Test device and method for simulating natural gas leakage in soil
  • Test device and method for simulating natural gas leakage in soil

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Embodiment Construction

[0014] Such as figure 1 and image 3 Shown is a basic embodiment of the invention. A test device for simulating natural gas leakage in soil such as figure 1Shown includes compressed gas cylinder 1, pressure reducing valve 2, gas flow meter 3, PC computer 4, pressure-resistant hose a5-1, pressure-resistant hose b5-2, pressure-resistant hose c5-3, hard pipe a6 -1, hard pipe b6-2, combustible gas probe a8-1, combustible gas probe b8-2, combustible gas probe c8-3, combustible gas probe d8-4, combustible gas probe e8-5, combustible gas probe f8- 6. Combustible gas probe g8-7, combustible gas probe h24, gas buffer cylinder 7, multi-channel combustible gas probe controller 9, waterproof shielded cable a10, rigid hose 11, serial communication line 12, compressed gas 13, leak hole 14 , gas pressure sensor 15, air compressor 16, greenhouse 17, soil pit 18, waterproof shielded cable b22, plug 23 and waterproof solenoid valve 25. Among them, the compressed gas cylinder 1 is tightly co...

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Abstract

The invention provides a test device and method for simulating natural gas leakage in soil. The test device comprises a compressed gas steel cylinder, a pressure reducing valve, a gas flow meter, a PC computer, a pressure-tolerant hose, a rigid pipe, a gas buffer cylinder, a combustible gas probe, a multichannel combustible gas probe controller, a waterproof shield cable, a rigid hose and the like. The gas buffer cylinder and the combustible gas probe are embedded in outdoor soil. Through the rigid hose, zero calibration can be carried out on the combustible gas probe buried in the ground. The test method comprises the steps that the pressure reducing valve of the compressed gas steel cylinder of natural gas is opened; the gas buffer cylinder is filled with the natural gas successively through the gas flow meter, the pressure-tolerant hose and the rigid pipe; the combustible gas probe buried in the ground is used to collect the concentration of the gas leaking out from the gas buffer cylinder; the diffusion law of the natural gas in soil after natural gas pipe leakage is researched; and a technical support is provided for the prevention and the disposition of a natural gas pipe leakage accident.

Description

technical field [0001] The invention relates to a test device and method for simulating the leakage of natural gas in soil, and relates to the technical fields of measurement of combustible gas, gas diffusion in porous media, gas pipeline system and the like. Background technique [0002] As of 2005, the length of various pipelines built in the world has exceeded 2.5 million kilometers, and its total length has exceeded the total mileage of world railways. Most of the natural gas in the world, and more than 85% of crude oil transportation is realized through pipeline transportation. . As of early 2013, the total length of oil and gas pipelines in China has exceeded 100,000 kilometers. However, like all engineering equipment, accidents can happen to pipelines. With the continuous development of the pipeline transportation industry, the increase of the number of pipelines, the increase of the age of the pipeline, and the inevitable corrosion, wear, defect and other natural o...

Claims

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Application Information

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IPC IPC(8): G01M3/28
Inventor 董晓强李俊明晏玉婷张赫然陆路王吉肖航
Owner TSINGHUA UNIV
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