Method for measuring material level by applying curve simulation and nuclear radiation principle

A radiation quantity and curve fitting technology, which is applied in the field of measuring material level using curve simulation and nuclear radiation principle, which can solve the problems of high risk to human health, inaccurate measurement, and easy wear and damage of mechanical measuring tools.

Active Publication Date: 2021-09-10
洛森自动化科技(上海)有限公司
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Problems solved by technology

[0004] (1) When using method 1 for level measurement, the radiation source is more dangerous to human health; and when the radiation source is used improperly, it will pollute the environment
[0005] (2) When using method 2 for level measurement, it is easy to measure inaccurately when ultrasonic waves encounter dust and irreg...

Method used

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  • Method for measuring material level by applying curve simulation and nuclear radiation principle
  • Method for measuring material level by applying curve simulation and nuclear radiation principle

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Embodiment 1

[0078] (1) The present invention applies the principle of the Compton effect under the temperature condition of 25°C, and the volume v of the reference material is measured multiple times to be 1m respectively 3 、2m 3 、3m 3 The radiation dose of fly ash I m1 , I m2 , I m3 , as shown in Table 1:

[0079]

[0080] Table I

[0081] The amount of radiation to be measured I m1 , I m2 , I m3 And the corresponding volume is substituted into the radiation amount I m Relational formula I with reference material volume v m =a 0 v 2 +a 1 v+a 2 ;Calculate and obtain the curve fitting parameter a 0 =0.5, a 1 =97.7, a 2 =1.2, therefore, I m =0.5v 2 +97.7v+1.2;

[0082] (2) material to be measured in the present invention is the radiation value of fly ash after coal combustion in different places in the country, therefore, the conversion coefficient K of the material to be measured changes little substantially, and K=1, so V=v;

[0083] (3) The relationship between the...

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Abstract

The invention provides a method for measuring a material level by applying curve simulation and a nuclear radiation principle, and relates to the field of material level measurement of materials in a container. The method comprises the steps of S1, obtaining a relation between the radiation quantity Im of a reference material and the volume v of the reference material; S2, obtaining the relation between the volume V of the measured material and the volume v of the reference material; S3, obtaining the relation between the volume V of the measured material in the container and the height h of the material; S4, obtaining the relation between the radiation quantity difference value [delta] It of the reference material and the temperature difference value [delta] t of the reference material; S5, obtaining the relation between the final radiation quantity I and the radiation quantity Im and the relation between the final radiation quantity I and the radiation quantity difference [delta] It, and conducting environment radiation correction on the final radiation quantity I; and S6, obtaining the relation between the final radiation quantity I and the height h of the measured material on the basis of the temperature difference [delta] t of different reference materials in the steps S1 to S5. According to the invention, the defects of radiation hazard, inaccurate measurement and the like existing in the conventional method for measuring the material level of the material in the container are overcome.

Description

technical field [0001] The invention relates to the field of level measurement of materials in containers, in particular to a method for measuring level by applying the principle of curve simulation and nuclear radiation. Background technique [0002] In chemical industry, metallurgy, coal, electric power and other industries, it is generally necessary to measure the level of materials in containers. Existing level measurement methods mainly include three types: 1. Level measurement by radioactive radiation sources and sensors, that is, by using radiation sources with radioactive isotopes as signal sources, and signal acquisition by sensors, and calculating according to the signal acquisition time Material level; 2. Measure the material level through ultrasonic waves, that is, use an ultrasonic generator as a signal source, and use an ultrasonic receiver for signal acquisition, and calculate the material level according to the signal acquisition time; 3. Measure material lev...

Claims

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Application Information

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IPC IPC(8): G01F23/22G01F17/00
CPCG01F23/22G01F17/00Y02E30/30
Inventor 李闯陈旗
Owner 洛森自动化科技(上海)有限公司
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