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Multiple-point coal ash detection method

A kind of ash detection and multi-point technology, which is applied in the direction of material analysis by measuring secondary emissions, to achieve the effect of avoiding poor representation and high measurement accuracy

Active Publication Date: 2012-11-14
内蒙古呼和浩特市立信电气技术有限责任公司
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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a multi-point coal ash detection method, which uses the automatic uniform ash unloading valve system to continuously and uniformly unload the material within the measurement period, and realizes continuous multi-point measurement within the measurement period, solving the problem of It solves the representative problem of single-point measurement of traditional dual-energy ash analyzer, and effectively improves the representativeness and accuracy of measurement.

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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as Figure 1-Figure 2 , a kind of multi-point type coal ash detection method, described method comprises the following steps:

[0032] Step 1. Collect medium / low energy gamma ray spectral signals and characteristic X-rays;

[0033] Step 2. Process the collected signal;

[0034] Step 3. Calculate and display the ash content of the coal online.

[0035] In the step 1, the medium / low-energy gamma rays are respectively issued by the medium-energy gamma source Cs-137 and the low-energy gamma source Am-241, and the medium-energy gamma source Cs-137 is placed in the source protection body A In the collimation hole A inside, its center is on the central axis of the collimation hole A, and the hole depth of the collimation hole A is 7cm; In the straight hole B, its center is on the central axis of the collimated hole B, and the hole depth of the collim...

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Abstract

The invention provides a multiple-point coal ash detection method which comprises the following steps of collecting a middle / low-energy gamma ray spectrum signal and a characteristic X ray; processing the collected signal; and calculating and displaying ash content of coal online. According to the multiple-point coal ash detection method, a middle / low-energy gamma source Am241 can serve as a low-energy gamma source for emitting a low-energy gamma ray and also serve as an excitation source of the characteristic X ray. An automatic ash discharging valve system can achieve multiple-point continuous measurement of the ash content by evenly and continuously measuring axis in a measurement period, so that the problem of poor representation of single point measurement on material unevenness measurement of the traditional double-energy gamma technology is avoided. The multiple-point coal ash detection method is simple, reliable, high in measurement accuracy and suitable for complex occasions where coal types are changeable.

Description

technical field [0001] The invention relates to a coal ash detection method, in particular to a multi-point coal ash detection method. Background technique [0002] At present, the use of gamma ray technology has been used as a routine technology in various measurement and analysis. It has many advantages that other analytical techniques do not have. For example, using the characteristic of strong penetration, gamma rays have been used for non-destructive testing of metals and ash in coal many years ago. In recent years, gamma-ray related nuclear measurement technology has been widely used, such as its application in cement, coal, ore and other fields. At present, the technology of using dual-energy gamma rays to detect the ash content in coal is very mature, but due to the traditional dual-energy gamma technology, only the ash content on the source detection axis is measured, which is a single-point measurement, and the representativeness is poor. If the material is unifor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/22
Inventor 贾文宝柳威
Owner 内蒙古呼和浩特市立信电气技术有限责任公司
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