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Tectonic coal permeability tester

A permeability and tester technology, applied in permeability/surface area analysis, instruments, measuring devices, etc., can solve the problem of inability to obtain experimental samples of tectonic coal, and achieve the effect of convenient and efficient testing, easy sampling and wide range

Inactive Publication Date: 2015-10-07
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the inability of the existing permeability tester to acquire structural coal experimental samples to reflect the real permeability data of structural coal, the present invention provides a structural coal permeability tester

Method used

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Embodiment Construction

[0016] The following is a specific embodiment of the present invention, and the present invention will be further described in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, a structural coal permeability tester, vent holes are respectively opened at both ends of the core placement chamber 4; a flowmeter I2 and an upstream container 16 connected in parallel are connected between the pressure regulating valve 1 and the rock core placement chamber 4; A valve II3 is provided on the pipeline at the end of the flowmeter I2 close to the core storage chamber 4; a valve I17 and a valve III15 are respectively provided on the pipelines at both ends of the upstream container 16; the pressure regulating valve 1 is connected to the gas source; the core storage chamber 4 The other end is respectively connected to the flow meter II7, the vacuum pump 9 and the downstream container 12 through the pipeline; the connection port of the flow meter II7 is provided w...

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Abstract

The invention discloses a tectonic coal permeability tester, which can simultaneously realize steady-state method and non-steady-state method permeability tests on irregular tectonic coal. The tectonic coal permeability tester comprises a core arranging chamber in which a sample is arranged, wherein two ends of the core arranging chamber are respectively provided with vents; two ends of the sample are planes, and space between the periphery of the sample and the inner wall of the core arranging chamber is filled with glass cement; one end of the core arranging chamber is connected with a pressure regulating valve by a pipeline, and the pressure regulating valve is communicated to a gas source; a flowmeter I and an upper stream container which are connected with each other in parallel are connected between the pressure regulating valve and the core arranging chamber; the other end of the core arranging chamber is respectively connected with a flowmeter II, a vacuum pump, and a downstream container through pipelines; a differential pressure gauge is connected between the vents in the two ends of the core arranging chamber. According to the tester, sampling is easy, a sample clamp holder is prevented from pressing and damaging the sample, and the tested permeability is more close to reality; the steady-state and non-steady-state tests can be performed, so the test range is wider, meanwhile the porosity of the sample can be tested, and acquired data are more.

Description

technical field [0001] The invention relates to a tester for structured coal, in particular to a tester for the permeability of structured coal, which can simultaneously realize the permeability test of irregularly structured coal by a steady-state method and an unsteady-state method. Background technique [0002] The existing coal rock test principle is based on Darcy's seepage theory, and the test methods include steady-state method and unsteady-state method. At present, the experimental permeability tester includes three main parts, gas cylinder, core placement chamber (core holder), and gas flow meter. It can test samples of two specifications, namely a cylinder with a diameter of 5 cm and a height of 10 cm and a A cylinder with a diameter of 2.5 cm and a height of 5 cm. The core holder is rigid and non-deformable. In order to achieve a sealing effect, the holder needs to be loaded with a certain pressure. The steady-state method has a fixed requirement for the cross-se...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N7/10
Inventor 屈争辉孙维吉储小送郭卫坤靖建凯
Owner CHINA UNIV OF MINING & TECH
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