Automatic sampling device of tritium in water

A sampling device and water sample technology, applied in the direction of sampling devices, etc., can solve the problems of undisclosed tritium sampling device structure and parameter requirements, inaccurate measurement results, large human influence factors, etc., to achieve sampling efficiency, strong collection ability, Avoid the effect of mist entrainment

Active Publication Date: 2017-02-15
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ordinary environmental samples, although the content of radioactive substances is relatively small, the impurities introduced by mist entrainment will cause great interference to the liquid scintillation measurement of tritium, resulting in inaccurate measurement results
In addition, the distillation method generally has a long return line, the distillation efficiency is low, and multiple distillations are required due to too many interfering substances, resulting in a long time-consuming. Most of the distillation devices are made of quartz glass

Method used

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  • Automatic sampling device of tritium in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An automatic sampling device for tritium in water, the device includes a mechanical part and a control part; wherein the mechanical part includes an evaporation unit, a condensation unit and a collection unit; the control part includes a control box, a control panel, control software, a solenoid valve, a flow meter and a thermometer , All kinds of electrical switches are activated by relays, and one pole of the relay and solenoid valve is connected to the super five module of the control box, and the other pole is common. The automatic operation of the whole process of sampling, distillation and condensation can be realized through software. The control panel displays important information such as pressure, flow rate and temperature in real time. The whole process is completed automatically and is easy to use.

[0029] The evaporating unit includes an evaporating container 2 and a heating device 6 located at two sides below the evaporating container, the heating device...

Embodiment 2

[0040] The difference from Example 1 is that the heating device heats the temperature of the water sample in the evaporation container to 85° C.; the nitrogen inlet is located 3 cm above the liquid level to be sampled, and the nitrogen flow rate is 3 L / min.

Embodiment 3

[0042] The difference from Example 1 is that the heating device heats the temperature of the water sample in the evaporation vessel to 95° C.; the nitrogen flow rate is 10 L / min.

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Abstract

The invention belongs to the technical field of sample sampling, and discloses an automatic sampling device of tritium in water. The automatic sampling device comprises a mechanical part and a control part; the mechanical part comprise an evaporation unit, a condensing unit, and a collecting unit; the control part comprises a control cabinet, a control panel, a control software, a magnetic valve, a flowmeter, and a thermometer; and the automatic sampling device is used for realizing automatic operation of sample injection, distillation, condensation, and collection of samplings. The automatic sampling device is high in sampling speed and collecting speed of tritium in water, and is capable of avoiding entrainment effectively, and realizing automatic sampling.

Description

technical field [0001] The invention belongs to the technical field of sample sampling, in particular to an automatic sampling device for tritium in water. Background technique [0002] During the discharge of wastewater from nuclear facilities, it is necessary to control the content of tritium in real time, so a large number of sampling and analysis tasks need to be completed quickly. The traditional tritium analysis sample preparation generally adopts the distillation method. During the distillation process, the solution will boil, so that some very small droplets and mist will be entrained with the steam into the collection solution. For ordinary environmental samples, although the content of radioactive substances is relatively small, the impurities introduced by mist entrainment will cause great interference to the liquid scintillation measurement of tritium, resulting in inaccurate measurement results. In addition, the distillation method generally has a long return l...

Claims

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Application Information

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IPC IPC(8): G01N1/10
Inventor 丁有钱梁小虎孙宏清毛国淑杨素亮黄昆张生栋
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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