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Device and method for preparing coal samples with different moisture content

A preparation device and coal sample technology, which is applied in the field of coal sample preparation devices with different moisture content, can solve the problems of difficult control of water content, large error, complicated preparation process, etc., and achieve the effect of meeting the precision requirements of sample preparation and improving the efficiency of sample preparation

Active Publication Date: 2018-08-17
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] At present, coal samples with different moisture content are mainly prepared by soaking, etc. The preparation process is more complicated, and it is not easy to control the water content, resulting in large errors.

Method used

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  • Device and method for preparing coal samples with different moisture content

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Experimental program
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specific Embodiment

[0036] like figure 1 As shown, the present invention first puts the coal sample in the coal sample tank, uses a vacuum pump to evacuate the coal sample tank, and sets the temperature of the induction cooker through the control system, so that the induction cooker heats the water tank, and the distilled water in the water tank evaporates When entering the coal sample tank, the quality of the coal sample changes in the coal sample tank through a series of processes under vacuum conditions, so the water content of the coal sample can be calculated by comparing the quality changes before and after passing through the coal sample. The control system will stop the experiment when required, and the preparation of the water-containing coal sample is completed.

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Abstract

The invention discloses a device and a method for preparing coal samples with different water contents. The device comprises a thermostat, wherein a water tank and a coal sample tank which are connected through a pipeline are arranged in the thermostat; an electromagnetic oven is arranged on the lower part of the water tank; the water inlet of the water tank is connected with a water adding device; a balance is arranged on the lower part of the coal sample tank; the coal sample tank is connected with a vacuum pump through a pipeline; the thermostat, the electromagnetic oven, the balance and the vacuum pump are connected with a control system through data lines respectively. The device is capable of directly testing the water contents of the coal samples, humidifying the coal samples through the test data set by a computer, and controlling the various components through the control system when the coal samples achieve the requirements of the test data, and thus preparing the needed coal samples; in the way, the technical problem of control of an experiment on the different needs of the water contents is solved, the sample preparation efficiency can be increased, and the sample preparation accuracy requirements can be met.

Description

technical field [0001] The invention relates to a coal sample preparation technology, in particular to a preparation device and method for coal samples with different moisture content. Background technique [0002] The research on the mechanical properties and seepage characteristics of coal is of great significance to the progress of coal mine safety technology. When performing experiments on the mechanical properties and seepage of coal samples in the laboratory, the moisture content of the coal samples will change during the preparation process, which will have a certain impact on the experimental results. Therefore, when doing experiments, it is necessary to add moisture to the coal sample to make it close to the on-site state. [0003] At present, coal samples with different moisture content are mainly prepared by soaking, etc. The preparation process is complicated, and it is not easy to control the water content, resulting in large errors. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 李祥春杨春丽聂百胜陈昔辉
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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