On-line measurement system and method for medium and low concentration tritium

A measurement system and low-concentration technology, applied in radiation measurement, measurement devices, X/γ/cosmic radiation measurement, etc., can solve problems such as poor accuracy, facilitate debugging and maintenance, improve equipment use efficiency, and reduce internal Effects of Exposure Risk

Active Publication Date: 2021-10-01
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an on-line measurement system and method for medium and low concentration tritium, and solve the problem of poor accuracy caused by the existing tritium measurement method for low concentration tritium measurement

Method used

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  • On-line measurement system and method for medium and low concentration tritium

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Experimental program
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Embodiment 1

[0057] Such as figure 1 As shown, the on-line measurement system for medium and low concentrations of tritium includes a low concentration background compensation system, a medium concentration background compensation system, a tritium-containing gas measurement system, and a signal acquisition and data processing module;

[0058] The tritium-containing gas measurement system includes a tritium-containing gas system and a drying device communicated through pipelines, an oxidation chamber and a measurement chamber are sequentially arranged on the pipeline between the tritium-containing gas system and the drying device, and the oxidation chamber is used for combustion Tritium gas produces HTO, and the measurement chamber is used to measure the total activity of beta on the burned tritium gas, and the pipeline between the tritium-containing gas system and the drying device is also provided with a solenoid valve DF03 and a circulation pump;

[0059] The drying device is provided w...

Embodiment 2

[0085] Such asfigure 1 As shown, this embodiment is based on Embodiment 1. A pressure trigger switch is also provided on the pipeline between the argon methane gas storage mechanism and the compensation proportional counter, and the pressure trigger switch is electrically connected to the signal acquisition and data processing module.

[0086] In this embodiment, the pressure trigger switch in the low-concentration background compensation system is set to a trigger pressure of 41kPa. When the input gas of argon methane gas exceeds 41kPa, the switch is turned on. When the pressure is lower than 41kPa, the system shuts down and an alarm is displayed. Ventilation reminder with data acquisition system.

Embodiment 3

[0088] Such as figure 1 As shown, this embodiment is based on Embodiment 1, and further includes a display storage module electrically connected to the signal acquisition and data processing module; the display storage module is used to store and display the data collected by the signal acquisition and data processing module.

[0089] In this embodiment, the signal acquisition and data processing module includes an ARM signal processing module; the ARM microprocessor receives data from pressure, humidity, flow, temperature sensors, proportional counters and measurement chambers, and sends instructions to control according to the set value, And transmit signals to the display storage module through a standard RS232 serial communication interface and Ethernet communication interface.

[0090] The display storage module mentioned therein includes a Windows system, receives the data transmitted by the ARM processor, and stores the data in the database for data analysis at any time...

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Abstract

The invention discloses an online measurement system and method for medium and low concentration tritium. The online measurement system for medium and low concentration tritium includes a low concentration background compensation system, a medium concentration background compensation system, a tritium-containing gas measurement system, and signal acquisition and Data processing module. When the β total activity is lower than 1MBq / m³, activate the low-concentration background compensation system, the argon methane gas in the low-concentration background compensation system enters the drying device through the pipeline for purging, and the HTO is carried by the argon methane gas through the drying device Go, enter the measurement ratio counter to obtain the concentration data; when the total activity of β is higher than 1MBq / m³, the medium concentration background compensation system is activated, and the air enters the drying device through the pipeline of the medium concentration background compensation system, as a purge gas, with Go HTO into the measurement ratio counter to obtain the concentration data. The invention solves the problem of poor accuracy caused by the existing tritium measurement method used in low-concentration tritium measurement, and realizes automatic online monitoring.

Description

technical field [0001] The invention relates to the technical field of nuclear fusion reactor tritium measurement, in particular to an on-line measurement system and method for medium and low concentration tritium. Background technique [0002] In the transient test of the irradiation circuit with He-3 as the medium and the operation of tritium-related processes, it is necessary to measure the concentration of tritium in real time. On the one hand, it can monitor the concentration of tritium in the process environment and pipeline system, and judge Whether there is tritium leakage, on the one hand, it provides monitoring data for the reprocessing of tritium-containing gas. [0003] At present, the tritium measurement method mainly adopts the off-line method, which is measured by adsorption sampling and simple analysis. This method is not real-time and accurate, and its application range is narrow. The other is to use an ionization chamber to calculate the tritium concentrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/167G01T1/178G01T7/00G21C17/00
CPCG01T1/167G01T1/178G01T7/00G21C17/002Y02E30/30
Inventor 张帅孙胜刘晓松冯明全徐灵杰魏甫岳潇傅源杰何潘庆曹娜
Owner NUCLEAR POWER INSTITUTE OF CHINA
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