Total-moisture coal sampling system applied to transportation tool and working method of sampling system
A transportation tool and sampling system technology, applied in the field of full-moisture coal sample sampling system, can solve the problems of large moisture loss in coal samples, long collection process time, and affecting the accuracy of coal samples, so as to achieve convenient operation, accurate samples, and accurate assurance sexual effect
Active Publication Date: 2014-12-03
STATE GRID CORP OF CHINA +1
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[0003] However, GB475-2008 "Methods of Manually Collecting Commercial Coal Samples" does not clearly stipulate how to take the full moisture sample separately. At present, the method of taking the sample from the common sample is adopted, that is, during the sample preparation process, the coal sample After crushing to a certain particle size, it is obtained by mechanical or manual extraction
Since the common coal sample can only be prepared after the entire batch of coal is collected, the collection process takes a long time, and the moisture loss of the coal sample is relatively large, especially for the coal sample with a large moisture content, which directly affects the coal sample. detection accuracy
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[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0044] 1 Sampling system:
[0045] A full-moisture coal sample sampling system applied to transportation vehicles, comprising: a sampling unit, a dividing unit, a data storage unit, a testing unit and a sealing unit; wherein:
[0046] The dividing unit is used to divide the number of sampling units according to the size of the coal loaded by the transport vehicle; and calculate and determine the number of sub-samples according to the size of the coal batch, the number of sampling units and the number of carriages, and connect to the data storage unit;
[0047] The data storage unit is used to store and call the current transport batch, coal load, coal batch size, number of carriages, carriage number and relevant sampling standards;
[0048] The inspection unit invokes the sampling standard provisions stored in the data storage unit, determines the qual...
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The invention discloses a total-moisture coal sampling method applied to a transportation tool. The method comprises the following steps: (1) planning the number of sampling units, namely classifying the sampling units according to the coal loading amount of the transportation tool; (2) classifying subsamples, namely determining the number of the subsamples according to the quantity of coal per batch, the number of the sampling units and the number of compartments; (3) determining the mass of a total sample and the mass of each subsample according to provisions of articles 5.2.4.1 and 5.2.4.2 in the Commercial Coal Sample Artificial Sampling Method GB475-2008; (4) collecting the coal samples, namely collecting the coal samples from parts which are beside general analysis coal sampling points, are close to the coal sample collection points as much as possible but not intersected and have non-disturbed states; and (5) storing the coal samples. According to the method, total-moisture coal samples can be quickly and accurately collected, the moisture loss can be greatly reduced, the representativeness of collected coal samples can be guaranteed, and the accuracy of a checking result is guaranteed.
Description
technical field [0001] The invention relates to a full-moisture coal sample sampling system applied to transportation tools and a working method thereof. Background technique [0002] According to the provisions of the national standard GB475-2008 "Manually Collecting Commercial Coal Samples" and GB474-2008 "Preparation Methods for Coal Samples", the samples used for the determination of total moisture can be taken separately or from a shared sample; when necessary In some cases (such as very wet coal), moisture samples can be taken separately. [0003] However, GB475-2008 "Methods of Manually Collecting Commercial Coal Samples" does not clearly stipulate how to take the full moisture sample separately. At present, the method of sampling from the common sample is adopted for the sample collection, that is, during the sample preparation process, the coal sample After crushing to a certain particle size, it is extracted mechanically or manually. Since the common coal sample ...
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Inventor 冷述博刘颖琳王东路
Owner STATE GRID CORP OF CHINA