Flow measurement method and device

A flow measurement device and flow measurement technology, applied in mass flow measurement devices, measurement devices, volume measurement instruments/methods, etc., can solve problems such as inability to accurately measure caving coal production

Inactive Publication Date: 2010-08-11
BEIJING POLYTECHNIC COLLEGE
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Problems solved by technology

[0006] The embodiment of the present invention provides a flow measurement method and device to solve the problem that the output of c

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] China is a big coal producing country and also a big coal consuming country. Taking China's energy consumption structure in 2006 as an example, coal fuel accounted for 68.7%, while the reserves of coal resources were only 188.6 billion tons. According to the current mining situation, the existing coal resources can only be mined for 100 ye...

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Abstract

The invention provides a flow measurement method and a flow measurement device. The method comprises the following steps: measuring a plurality of instantaneous distances between a measurement module and the upper surface of a material on a scraper conveyor by the measurement module; acquiring a plurality of instantaneous stack heights of the material according to the instantaneous distances and the distance between the measurement module and the surface of the scraper conveyor; on the section width of the scraper conveyor, carrying out numerical integration on the instantaneous stack heights of the material so as to calculate an instantaneous stack sectional area of the material; and carrying out numerical integration on the product of the instantaneous stack sectional area of the material and the transmission speed of the scraper conveyor in time so as to calculate the volume flow of the material within the time of integration. The flow measurement method and the flow measurement device of the invention provide a new measurement method for assessing the output of raw coal on the top coal caving mining face in a coal mine, realize the accurate measurement of the output of the raw coal; can improve the enthusiasm of the on-job workers for producing coals, and improve the recovery rate of the coal field and the economic benefit of the coal mine.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of coal, and in particular to a flow measurement method and device. Background technique [0002] The protection and rational utilization of coal resources is a strategic choice for energy security and sustainable economic and social development. Among them, improving the coal recovery rate is an effective way to prolong the supply time of self-produced coal under the existing coal resources. At present, most coal mines adopt high-yield and high-efficiency mines, and the fully mechanized mining face usually adopts top-coal caving technology to mine coal to improve the production efficiency of coal mines. [0003] In the fully mechanized top-coal caving process, three scraper conveyors need to be laid on the coal mining face, namely: the scraper conveyor laid in front of the hydraulic support and below the shearer, commonly known as "front slide", laid behind the hydraulic support ...

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Application Information

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IPC IPC(8): G01F22/00G01F1/86
Inventor 陈建民冯海明王文清任安祥吴文金田柏林牛小铁李萍孙静陈耕张春芝樊利军
Owner BEIJING POLYTECHNIC COLLEGE
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