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Liquid lithium injection device applied to fusion device and provided with sealing structure

A technology of sealing structure and injection device, applied in the field of fusion reactors, can solve the problems of pollution, damage, blockage of pipes, etc.

Active Publication Date: 2018-07-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the tokamak device, a lot of research work on the first wall of liquid lithium has been carried out, and fruitful results have been achieved, but there are also certain difficulties
The reasons are as follows: 1. Lithium is a metal with strong chemical activity, and it is very easy to react with O in the air. 2 , N 2 , CO, H 2 O.CO 2 and other impurity gases react to cause pollution
2. Since the evaporation and sputtering of lithium during the experiment will cause self-consumption loss, it needs to be replenished in time; however, the overflow of excessively injected high-temperature liquid lithium will cause corrosion or damage to components
3. The lithium injection pipeline is long and thin, and it is difficult to fix the heating wire externally. The two are not tightly bonded, and the heating efficiency is low, which will cause low local temperature and even block the pipeline; in addition, the external heating wire may burn the surrounding area. diagnostic components
At present, it is difficult to find a component in the market that has high heating efficiency, good vacuum sealing performance, and can control the on-off of liquid lithium injection in the fusion device

Method used

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  • Liquid lithium injection device applied to fusion device and provided with sealing structure
  • Liquid lithium injection device applied to fusion device and provided with sealing structure
  • Liquid lithium injection device applied to fusion device and provided with sealing structure

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Embodiment Construction

[0016] Such as figure 1 As shown, a liquid lithium injection device with a sealed structure for a fusion device includes a molten lithium tank 1, a lithium storage tank 2 and two sets of molecular pump units 3, and the lithium storage tank 2 is located in a vacuum box 4, a heating device 5 is installed on the outside of the lithium melting tank 1, a lithium injection pipeline 6 is provided under the lithium melting tank 1, and a thermocouple 7 is respectively provided on the outside of the lithium melting tank 1 and the lithium injection pipeline 6, The bottom of the lithium injection pipeline 6 is located above the lithium storage tank 2 in the vacuum box 4, and the two sets of molecular pump units 3 are connected to the melting lithium tank 1 and the vacuum box 4 respectively, and the lithium melting tank 1 There is a feeding port 8 and an argon gas inlet 9 on the top, the argon gas inlet 9 is connected with an argon gas filling pipeline 10, an angle valve 11 is installed on...

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Abstract

The invention discloses a liquid lithium injection device which is applied to a fusion device and is provided with a sealing structure. The device comprises a heating structure of a heat source builtin a lithium injection pipe, a vacuum sealing structure of the heat source, and the wedge sealing structure design of liquid lithium. Through the heat source built in the lithium injection pipe, the temperature and fluidity of the liquid lithium can be effectively controlled. The vacuum sealing structure of the heat source can maintain the vacuum environment of a liquid lithium injection system. The liquid lithium does not react with O2, N2, H2O and CO2 in the air. A top bellows is moved to control the wedge sealing structure of the liquid lithium, and on and off of liquid lithium injection inthe fusion device are controlled. According to the invention, the device can easily, economically and effectively realize supplement and renewal of a liquid lithium first wall material in the fusiondevice, and provides a good technical basis for the successful application of the liquid lithium first wall in a fusion reactor in the future.

Description

technical field [0001] The invention relates to the technical field of fusion reactors, in particular to a liquid lithium injection device with a sealing structure for fusion devices. Background technique [0002] Magnetic confinement controlled nuclear fusion is one of the important ways to solve human energy and environmental problems. With the continuous upgrade of the fusion device, the interaction between the plasma and the wall material facing the plasma (the first wall) gradually becomes stronger, which causes the damage and corrosion of the wall material to intensify, which seriously affects the operation safety of the fusion device. Lithium metal has attracted extensive attention due to its excellent physical and chemical properties, and has been selected as a candidate material facing the first wall of the plasma. Studies have shown that the first wall of liquid lithium has good compatibility with plasma and can improve plasma performance. In addition, liquid lith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21B1/13
CPCG21B1/13Y02E30/10
Inventor 黄明左桂忠胡建生孟献才孙震徐伟钱玉忠
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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