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Online measurement apparatus and measurement method of uranium content of uranium-containing liquid

A measuring device and technology for uranium content, which are applied in the field of online measuring devices for uranium content in uranium-containing liquid, can solve the problems of cumbersome process, inability to realize real-time monitoring, long time, etc. Responsive effect

Inactive Publication Date: 2017-04-19
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an on-line measurement device for uranium content in uranium-containing liquids to realize the separation and purification of nuclear fuel; real-time and on-line measurement of uranium-containing liquids in the fields of chemical industry, spent fuel reprocessing, etc., to solve the problems caused by existing measurement methods The process is cumbersome, the time is long, and the problems of real-time monitoring cannot be realized

Method used

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  • Online measurement apparatus and measurement method of uranium content of uranium-containing liquid

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Embodiment 1

[0043] Such as figure 1 As shown, an on-line measurement device for uranium content in uranium-containing liquids includes a bypass pipeline 6 communicated with a process pipeline 7, the bypass pipeline 6 is provided with an α detector 3, and the α detector 3 is connected to a counter 4 , one end of the bypass pipeline 6 communicates with the process pipeline 7, and the other end communicates with the waste liquid tank (not shown in the figure), and the bypass pipeline 6 is provided with a solenoid valve 5 at the front end of the α detector 3; the α The end of the detector 3 in contact with the uranium-containing liquid is provided with a ZnS(Ag) coating 2 , and a Mylar film 1 is wrapped outside the ZnS(Ag) coating 2 .

Embodiment 2

[0045] Such as figure 1 As shown, this embodiment is based on Embodiment 1, the bypass pipeline 6 and the process pipeline 7 form a loop; the bypass pipeline 6 is provided with solenoid valves 5 at both ends of the α detector 3 .

Embodiment 3

[0047] Such as figure 1 As shown, the present embodiment is based on embodiment 1 or embodiment 2, and the bypass pipe 6 is provided with a detection area, the alpha detector 3 is arranged on the detection area, and the inner diameter of the detection area is larger than that of the pipes at both ends. inner diameter.

[0048] A measuring method of an online measuring device, comprising the following steps:

[0049] 1), the number of α-rays and uranium-containing liquid 238 Establishment of U content relationship:

[0050] a1), respectively inject different 238 Uranium-containing liquids with U concentrations of 10mg / L, 100 mg / L, 500 mg / L, 1000 mg / L, 2000 mg / L, 4000 mg / L, 8000 mg / L and 10000 mg / L are in the bypass pipeline (6) are respectively detected by α detector 3 238 The α ray that U sends out, and counts the quantity of α ray by counter 4, measures the quantity of α ray under each concentration;

[0051] b1), with 238 U concentration is the abscissa, and the corresp...

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Abstract

The invention discloses an online measurement apparatus and measurement method of the uranium content of a uranium-containing liquid. The online measurement apparatus comprises a bypass pipeline arranged on a technologic pipeline, the bypass pipeline is provided with an alpha detector, and the alpha detector is connected with a counter. The technologic pipeline is provided with the bypass pipeline, the bypass pipeline is introduced to the monitored uranium-containing liquid in the technologic pipeline the quantity of alpha rays emitted by <238>U is measured by the alpha detector on the bypass pipeline and the uranium content is obtained through the quantity of the alpha rays, so large-area and unsafe change of the technology running technologic pipeline is prevented, and online measurement is realized, thereby solving the problems of tedious process, long time and unable realization of real time monitoring, caused by present measurement modes.

Description

technical field [0001] The invention relates to the technical field of nuclear detection / nuclear analysis, in particular to an online measuring device and a measuring method for uranium content in uranium-containing liquid. Background technique [0002] Criticality safety is the first element of any nuclear activity and the lifeline of nuclear engineering construction. During the development of fuel elements, nuclear criticality safety control is mainly based on geometric control and concentration control. Usually, fuel plates / rods and fuel assembly processes are based on the Geometric control is carried out based on the calculated dimensions of containers, equipment, benches, etc. Most of the fuel chemical conversion is controlled by the concentration of uranium-containing pipes and liquid content in containers. The traditional method uses process monitoring point sampling-laboratory analysis to feed back the monitoring situation. The process is cumbersome, takes a long tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00
CPCG01N23/00
Inventor 赵峰廖志海张少鹏王占明乔洪波安身平龙绍军
Owner NUCLEAR POWER INSTITUTE OF CHINA
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