Coal permeability testing device and use method thereof
A testing device, permeability technology, applied in the direction of measuring device, permeability/surface area analysis, using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc. It can solve the problem of inability to measure ultrasonic parameters at the same time, the error between permeability and true value, and single measurement Coal permeability and other issues, to achieve the effect of accurate and reliable test results, easy operation and simple structure
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[0055] A coal permeability testing device, such as Figure 1-3 As shown, it includes an axial pressure pump 1 , a gas cylinder 2 , a gas booster pump 3 , a holder 5 , a confining pressure pump 11 and a bracket 14 . The clamper 5 is arranged in the bracket 14, and the clamper 5 includes a cylinder body 54 with upper and lower openings. The upper end and the lower end of the cylinder body 54 are respectively slid through and equipped with core plugs 51, and the core plugs 51 are respectively provided with vent holes along the axial direction. The side wall of the cylinder 54 is provided with a confining pressure port 55 communicating with the inner cavity of the cylinder 54 , and the confining pressure port 55 is connected to the confining pressure pump 11 through a pipeline.
[0056] The bracket 14 above the holder 5 is provided with an axial pressure chamber, and the lower end of the axial pressure chamber is provided with a telescopic rod, and the lower end of the telescopic ...
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