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A full-bag grain radioactive detection device

A detection device and radioactive technology, which is applied in the field of radioactive detection, can solve the problems of high price and achieve the effects of short processing time, improved time, and reduced labor intensity

Active Publication Date: 2021-06-15
NAT INST FOR RADIOLOGICAL PROTECTION & NUCLEAR SAFETY CHINESE CENT FOR DISEASE CONTROL & PREVENTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also instruments that use multiple sodium iodide scintillator first detectors to gather together to realize the radioactive detection of bulk foods, but the prices are relatively expensive

Method used

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  • A full-bag grain radioactive detection device
  • A full-bag grain radioactive detection device
  • A full-bag grain radioactive detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the present invention provides a whole-bag grain radiation detection device, which at least includes a conveying mechanism 1 , a first detection mechanism 2 and a data analysis mechanism 3 . The first detection mechanism 2 is arranged on the top of the conveying mechanism 1, and then when the conveying mechanism 1 transmits the bagged grain 8 from the first end of the first detection mechanism 2 to its second end, the first detection mechanism 2 can check the bag The loaded grains are scanned to obtain radioactivity data such as the energy range of gamma-ray radionuclides or the total amount of radiation in all energy segments emitted by reflective nuclides. The data analysis unit 3 can process the data collected by the first detection unit 2 to form, for example, a gamma energy spectrum. For example, the data analysis mechanism 3 may include multiple analyzers to form an energy spectrum. The energy peak corresponding to the spectrum peak ca...

Embodiment 2

[0045] This embodiment is a further improvement on Embodiment 1, and repeated content will not be repeated here.

[0046] preferred, such as image 3 As shown, the whole bag type grain radioactive detection device also includes a second detection mechanism 7. The second detection mechanism 7 is arranged upstream of the first detection mechanism 2, and is used for measuring the total amount of radiation energy released by at least two bags of grains. Specifically, the second detection mechanism 7 includes at least a second detector 7a and a box 7b. The box body 7b is arranged on the main body 1a and thereby defines an accommodating chamber 7c capable of accommodating at least two bags of grains. After the bagged grain is placed on the belt 1c, the bagged grain first enters the accommodating cavity 7c through the transmission of the belt. It can be understood that, by enlarging the volume of the box body 7b, the accommodating cavity 7c can simultaneously accommodate more than...

Embodiment 3

[0053] This embodiment is a further improvement on the foregoing embodiments, and repeated content will not be repeated here.

[0054] Preferably, the whole-bag grain radioactivity detection device is configured to also complete the radioactivity detection of bagged grains in the following manner:

[0055] S1: When the accommodating cavity 7c can accommodate n bags of second bagged grains 8b and the conveying mechanism 1 is provided with N bags of first bagged grains 8a, the second bags of grains 8b are spaced at n intervals according to the first bagged grains 8a -The way of 1 bag of grain is associated with the first bag of grain 8a.

[0056] Specifically, each bag of grain can be provided with an electronic tag 9, the first detector 2a is provided with a first identifier 10, and the second detector 7a is provided with a second identifier 11. Furthermore, when the bagged grain enters the box body 7b, the second identifier 11 can scan its electronic tag 9 and determine the s...

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Abstract

The invention relates to a whole-bag type grain radioactivity detection device, which at least includes a second detection mechanism located upstream of the first detection mechanism and having an accommodating chamber capable of accommodating at least two bags of grain. The full-bag type grain radioactivity detection device is configured To perform radioactivity detection in the following manner: when the conveying mechanism rotates such that a first bag of grain enters the holding chamber and a second bag of grain in the holding chamber exits the holding chamber, determine the holding chamber The change trend of the total amount of radiant energy; when the total amount of radiant energy shows an increasing trend, the conveying mechanism is configured to rotate at the first rotation speed, so that the first detection mechanism can continue to Data collection is performed on the first bag of grains entering the storage chamber in a manner of setting a time, and the data analysis mechanism performs radioactivity detection on the first bag of grains in a manner of performing a first operation.

Description

technical field [0001] The invention belongs to the technical field of radioactivity detection, and in particular relates to a whole-bag grain radioactivity detection device. Background technique [0002] Food safety involves all aspects, among which the pollution of radioactive substances is an important issue of food safety. The mining area of ​​nuclear raw materials, especially in the nuclear catastrophic accident area and its surrounding areas, due to large-scale water and soil nuclear pollution, and even seawater nuclear pollution Pollution often causes decades-long nuclear pollution of agricultural products, aquatic products and seafood. Therefore, it is necessary to have 100% fast and accurate radioactive detection equipment for these foods. A variety of radioactivity detectors for food have been sold in the domestic and foreign markets, and they mostly use small-sized sodium iodide (thallium) (NaI(Tl)) scintillator as the first detector, and use special sampling cups...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07C5/346
CPCB07C5/346
Inventor 拓飞李则书周强张京杨宝路李文红
Owner NAT INST FOR RADIOLOGICAL PROTECTION & NUCLEAR SAFETY CHINESE CENT FOR DISEASE CONTROL & PREVENTION
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