Device and method for measuring gas permeability of sparse material
A material gas and measurement device technology, applied in the direction of measurement devices, permeability/surface area analysis, and material analysis, etc., can solve problems affecting test measurement accuracy, wasting test gas, and air pressure reduction, etc., to ensure stability and continuity , reduce test cost and ensure accuracy
Active Publication Date: 2022-04-22
核工业湖州勘测规划设计研究院股份有限公司
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Problems solved by technology
When the gas steady-state infiltration of sparse porous materials is carried out indoors for permeability measurement, due to the material properties, the air pressure drops rapidly during the infiltration process, which not only affects the accuracy of the test measurement, but also wastes a lot of test gas. The permeation device under the condition of gas permeation is of great significance, and in view of the above problems, this application is proposed
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[0029] Combine below Figure 1-2 The present invention will be described in detail.
[0030] In this embodiment, the inflation valve 8 is opened to supplement the high-pressure gas source 1 with an external gas source; the initial pressures of the secondary gas source 4 and the primary gas source 6 are set to A and B, and 2B
[0031] Open exhaust valve 20 and switch 21, close switch 22, switch 23, close common switch 12, common switch 13, common switch 17, keep high pressure gas source 1, secondary gas source 4, primary gas source 6 by electromagnetic Valve 11, solenoid valve 15 control whether to communicate.
[0032] In the gas permeation test, it is necessary to keep the confining pressure of the sample higher than the gas pore pressure. After the confining pressure is loaded, open the exhaust valve 20, the intake valve 18,...
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The invention relates to the technical field related to rock mechanics and engineering, and discloses a sparse material gas permeability measuring device and method.The sparse material gas permeability measuring device comprises a high-pressure gas source and multi-stage gas sources, and the multi-stage gas sources at least comprise two gas sources, namely the first-stage gas source and the second-stage gas source; the high-pressure gas source is respectively connected with the first-stage gas source and the second-stage gas source, the first-stage gas source is connected with the second-stage gas source, the first-stage gas source is connected with a test instrument, and through the arrangement of multiple stages of gas sources, the problem that the gas pressure is rapidly reduced in the permeation process is avoided; the air pressure of an air source connected with an experimental instrument is always kept within a certain range, so that the accuracy of test measurement is ensured; through arrangement of the gas collection mechanism, the gas compression device and the gas storage device, collection and cyclic utilization of test gas are completed at the same time, the stability and continuity of the test process are guaranteed, and the test cost is reduced.
Description
technical field [0001] The invention relates to the technical fields related to rock mechanics and engineering, in particular to a device and method for measuring gas permeability of sparse materials. Background technique [0002] The permeability properties of porous media play an important role in the process of energy development, utilization, storage and protection. When the gas steady-state infiltration of sparse porous materials is carried out indoors for permeability measurement, due to the material properties, the air pressure drops rapidly during the infiltration process, which not only affects the accuracy of the test measurement, but also wastes a lot of test gas. Permeation devices under gas permeation conditions are of great significance, and this application is proposed in view of the above problems. Contents of the invention [0003] The object of the present invention is to provide a device and method for measuring the gas permeability of sparse materials,...
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Login to View More IPC IPC(8): G01N15/08
CPCG01N15/0826G01N15/0806
Inventor 戴维江朱伟张宽王伟蒋敏郑家根
Owner 核工业湖州勘测规划设计研究院股份有限公司