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Device for detecting compositions of coal on conveying belt in real time

A real-time detection and conveyor belt technology, applied in the field of automatic detection technology and nuclear detection, can solve the problems of model error increase and inappropriateness, and achieve the effect of improving resource utilization and energy efficiency

Inactive Publication Date: 2009-12-16
江苏广兆科技有限责任公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The problem is that this kind of model has a coal type adaptation range. After the coal type changes, the error of the original model will increase significantly, and it is not suitable for users who need to frequently switch coal types (such as most power plants that burn mixed coal)

Method used

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  • Device for detecting compositions of coal on conveying belt in real time
  • Device for detecting compositions of coal on conveying belt in real time
  • Device for detecting compositions of coal on conveying belt in real time

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Embodiment Construction

[0022] Such as figure 1 As shown, the coal component real-time detection device on the conveyor belt according to the present invention is directly installed on the industrial site, and is not in contact with the coal 2 to be tested on the conveyor belt 1 . The detection sensor includes the upper and lower neutron sources 3a, 3b and the upper and lower gamma ray detectors 4a, 4b that excite the signal, which are installed symmetrically above and below the conveyor belt in a misaligned position to form a high-precision transmission-scattering compound Type detection system, that is: the connection line between the upper neutron source 3a above the conveyor belt and the lower gamma ray detector 4b below the conveyor belt, the upper gamma ray detector 4a above the conveyor belt and the lower neutron source 3a below the conveyor belt The connection lines of source 3b are all perpendicular to the conveyor belt. The upper neutron source 3a above the conveyor belt and the upper gamm...

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Abstract

The invention discloses a device for detecting compositions of coal on a conveying belt in real time, which comprises an upper neutron source and an upper gamma ray detector which are arranged above the conveying belt and a lower neutron source and a lower gamma ray detector which are arranged below the conveying belt, wherein the upper neutron source and the upper gamma ray detector are fixed on an upper lead block seat; the lower neutron source and the lower gamma ray detector are fixed on a lower lead block seat; the outside of the upper lead block seat and the lower lead block seat is provided with a shielding layer; the upper neutron source faces the lower gamma ray detector, and the lower neutron source faces the upper gamma ray detector; and the upper gamma ray detector and the lower gamma ray detector are sequentially connected with a gamma spectrum analyzer, a coal element analysis processor and a coal industrial analysis processor. The device can adapt to the changes of coal types and coal layer thickness and shape on the conveying belt, and maintain stable detection performance index in industrial fields.

Description

technical field [0001] The invention belongs to the fields of automatic detection technology and nuclear detection technology, and in particular relates to a real-time detection device for coal components on a conveyor belt. Background technique [0002] Coal composition rapid detection technologies mainly include X-ray fluorescence coal element analysis technology, laser-induced spectroscopy technology, dual-energy gamma analysis technology and neutron prompt gamma ray analysis technology, etc. The effective element measurement range of X fluorescence coal element analysis technology is from element 11 (Na) to element 92 (U), and it has strict requirements on coal particle size and thickness, so it is more used in laboratory environment. The detection of coal by laser-induced spectroscopy requires sampling and sample preparation, and the optical path is easily polluted, so it cannot directly detect the raw coal on the conveyor belt. Dual-energy gamma analysis technology ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/09G01N23/20G01N23/222G01N22/04G01T1/202
Inventor 张德琳宋兆龙
Owner 江苏广兆科技有限责任公司
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