Pulverized coal leakage point tracing method
A leak point, pulverized coal technology, used in measuring devices, instruments, particle size analysis, etc., can solve problems such as low efficiency
Inactive Publication Date: 2019-12-31
HUNAN UNIV
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Problems solved by technology
[0003] However, the current pulverized coal leakage point is searched by personnel, resulting in low efficiency. Therefore, it is necessary to invent a traceability method for pulverized coal leakage point to improve safe and efficient production.
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[0034] On the coal-to-gas production line of a coal gasification company, because the pulverized coal is very fine, it is easy to leak when it is transported in the pipeline. It is necessary to find the leak point quickly and accurately. However, after the pulverized coal leaks, the visibility in the factory building is not good, and it is difficult to find the leak. point, the leakage point can be found quickly and accurately by adopting the method claimed in the invention.
[0035] Step 1: Detect the fan-shaped distribution formed on the ground after the leakage and settlement of pulverized coal particles;
[0036] Step 2: Use a laser particle size analyzer to measure the particle size distribution of the pulverized coal particles on the fan-shaped distribution obtained in step 1, and find three different points A, B, C, connect two adjacent points to get two straight lines AB, BC, respectively make the perpendicular bisectors E and F of these two straight lines and intersec...
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The invention relates to the calculation of pulverized coal leakage source tracing, and specifically relates to a pulverized coal leakage point tracing method. The method comprises the steps of 1, detecting fan-shaped distribution formed on the ground after leakage and settlement of pulverized coal particles; 2, measuring the particle size distribution of the pulverized coal particles on the fan-shaped distribution obtained in the step 1, finding out three different points A, B and C on the same arc formed by the pulverized coal particles with the same particle size, and finding out the circlecenter O of the arc ABC; 3, finding the radius r of a fan-shaped arc formed after leakage of the pulverized coal particles with the same particle size according to the particle size of the pulverizedcoal particles on the arc ABC measured in the step 2; 4, measuring the initial velocity v during pulverized coal leakage, detecting the diameter d and the resistance coefficient xi of pulverized coal, and then calculating the settling final velocity u; 5, calculating the ground clearance H of a pulverized coal particle leakage point according to the initial velocity v, the radius r and the settling final velocity u during pulverized coal leakage; and 6, determining the pulverized coal leakage point by combining the circle center O and the height H.
Description
technical field [0001] The invention relates to the calculation of traceability of the leakage source of coal powder, in particular to a traceability method of the leakage point of coal powder. Background technique [0002] With the development of modern industry, ultrafine dust has been widely used, but the potential danger of dust explosion has also increased accordingly. Dust explosions have always been a constant threat to coal, grain, chemical, metallurgy, textile and other industries, and increasingly frequent dust explosion accidents have caused serious casualties and property losses. Since the coal industry is a frequent field of dust explosion accidents, in-depth research on coal dust explosions has important scientific research value for the prevention and control of such industrial catastrophic accidents, and has important practical significance for protecting people's lives and property safety. At the same time, with the development of powder technology and gran...
Claims
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IPC IPC(8): G01N15/04G01N15/02
CPCG01N15/0205G01N15/04
Inventor 程栋代扬何敏陈毓康聂资欣
Owner HUNAN UNIV