Experimental device for nuclide migration study under high temperature condition

A technology of experimental equipment and conditions, applied in the field of nuclide migration research, can solve problems such as can not meet the experimental requirements well, the pH variation range is large, the solution composition is complex, etc. good effect

Inactive Publication Date: 2015-02-11
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some fragile materials, such as granite, etc., when the flange is tightened, a little carelessness will produce uneven force and cause the rock slice to break
The characteristics of high-temperature diffusion experiment are long-term (experiment p

Method used

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  • Experimental device for nuclide migration study under high temperature condition
  • Experimental device for nuclide migration study under high temperature condition
  • Experimental device for nuclide migration study under high temperature condition

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Experimental program
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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 As shown, the present invention includes a diffusion liner and a metal outer frame, the diffusion liner is arranged at the opening of the metal outer frame, and is fastened by the top plate of the metal outer frame to be fixed in the outer frame;

[0014] Such as figure 2 , 3 The shown diffusion liner includes four diffusion interfaces (1), two parts of the diffusion cell body (2 and 5), two O-rings (3), a central diffusion rock slice (4); the two sides of the central diffusion rock slice (4) Add O-shaped gaskets (3) respectively and place them between the two diffusion pool bodies (2 and 5), and press the two parts of the diffusion pool bodies to form two diffusion pools on both sides of the rock slice; when the O-shaped gaskets are compressed, the To buffer the pressure and make the rock slices evenly stressed, it also pl...

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PUM

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Abstract

The invention relates to an experimental device for nuclide migration study under high temperature condition. The device is characterized in that: it comprises a PTFE diffusion liner and a metal outer frame. The diffusion liner is arranged at the opening of the metal outer frame, and is propped tightly by the top plate of the metal outer frame so as to be fixed in the outer frame. O-shaped gaskets are added to both sides of a central diffusion rock piece respectively, then the central diffusion rock piece is placed in the middle of two diffusion cell bodies, and by pressing the two diffusion cell bodies tightly, two diffusion cells are formed on two sides of the rock piece. The compressed O-shaped gaskets can play the role of buffering pressure and stressing the rock piece evenly, and also has a sealing effect. The diffusion liner and interfaces involved in the invention all adopt the PTFE material, thus having good aging resistance and high temperature resistance. Through application, the experimental device provided by the invention is expected to provide a reliable experimental platform for assessing the migration behavior of radionuclide at high temperature, and has good application prospects.

Description

technical field [0001] The invention relates to the field of nuclide migration research, in particular to an experimental device for nuclide migration research under high temperature conditions. Background technique [0002] The main types of nuclide migration research are divided into laboratory research and field research. The laboratory research mainly uses the diffusion cell to simulate the migration behavior of nuclides under the geological disposal conditions of high-level radioactive waste, so as to obtain a series of data such as apparent diffusion coefficient and effective diffusion coefficient. It can be seen that the diffusion cell is the basis of laboratory research, and its performance indicators and design functions will directly affect whether the diffusion experiment can be close to the conditions of geological disposal of high-level radioactive waste, so as to obtain more realistic data. [0003] Diffusion cells used in common diffusion experiments are main...

Claims

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Application Information

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IPC IPC(8): G01N13/00
Inventor 刘春立王春丽刘晓宇王路化
Owner PEKING UNIV
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