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Thermal analysis device for existence state of helium in tritium storage material

A thermal analysis device and state technology, which is applied in the field of thermal analysis devices for the state of helium in tritium storage materials, can solve problems such as unsuitable for helium desorption analysis in tritium storage materials, interference with helium measurement, etc., to achieve outstanding substantive features, Guaranteed safety and significantly improved results

Pending Publication Date: 2021-03-12
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Secondly, the phase transition, crystallization and oxidation process of the substance in the thermal analysis process all have a significant impact on the measurement results, so it is not suitable for the desorption analysis of helium in tritium storage materials
In addition, the tritium storage material is accompanied by the desorption of a large amount of tritium during the thermal analysis process, which not only interferes with the measurement of helium, but also involves the radiation protection and emission of radioactive tritium and other issues that need to be resolved

Method used

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  • Thermal analysis device for existence state of helium in tritium storage material
  • Thermal analysis device for existence state of helium in tritium storage material
  • Thermal analysis device for existence state of helium in tritium storage material

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Embodiment

[0032] Place the sample in the heater in the sample chamber, verify that all equipment and tubing are sealed, and verify that all valves are closed. Start mechanical pump I and molecular pump I by opening the second, fifth, and eighth valves to draw vacuum in the sample chamber, start mechanical pump II and molecular pump II and open the ninth, tenth, and eleventh valves to draw vacuum in the quadrupole mass spectrometer, After the readings of vacuum gauges I and II are both less than 5×10-4Pa, close the fifth valve, then open the third and fourth valves, adjust the leak hole of the needle valve to a predetermined size, and turn on the quadrupole mass spectrometer to enter the measurement mode. The heater in the inner bell is activated to linearly heat the sample according to the preset program. During heating, the reactive gas tritium released by the sample is absorbed by the getter bed, while the inert gas helium enters the quadrupole mass spectrometer for continuous measure...

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Abstract

The invention provides a thermal analysis device for the existence state of helium in a tritium storage material. The device comprises a sample chamber, a quadrupole mass spectrometer, a getter bed II, a molecular pump I and a mechanical pump I. Through the reasonable layout design of a vacuum pipeline, desorbed helium atoms are measured by adopting a quadrupole mass spectrometry method; the device overcomes the harsh requirements of the traditional thermal analysis method for directly measuring the analysis precision of the temperature, heat, mass state and the like of the sample, and avoidsinfluence of the phenomena of phase transformation, crystallization, oxidation and the like of the material on helium measurement in the thermal analysis process. Due to the design of the other branchgetter beds, the discharge of tritium to the environment is further reduced, and the technical problems of radiation protection, discharge and the like of tritium are solved.

Description

technical field [0001] The invention relates to the field of detection and analysis of tritium materials, in particular to a thermal analysis device for the state of helium in tritium storage materials. Background technique [0002] Tritium is an important strategic resource, which is generally stored in metals such as uranium, zirconium, cobalt, titanium, and scandium. But tritium has β - Radioactive, it decays continuously to produce helium. Helium is an inert atom, although it is insoluble in metals, it is easily captured by various defects in the material and aggregated into bubbles. With the continuous accumulation of helium, the mechanical properties of tritium storage materials decrease, and aging effects such as swelling, wrinkling, and powder drop occur, thereby losing the tritium storage function. And at the end of aging, the accumulated helium bubbles will burst, causing an "avalanche" release of helium, destroying the vacuum of the tritium storage container, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/12G01N27/62
CPCG01N25/12G01N27/62
Inventor 程贵钧杨本福彭述明龙兴贵王维笃周晓松黄刚陈淼沈春雷
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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