阅读说明：本技术 一种具有中子慢化和中子屏蔽及冷却功能的真空室 (Vacuum chamber with neutron moderation, neutron shielding and cooling functions ) 是由 阚存东 张黎源 赵凯 于 2020-05-19 设计创作，主要内容包括：本发明公开了一种具有中子慢化和中子屏蔽及冷却功能的真空室,所述真空室的器壁采用内外壁夹层焊接结构,包括：真空室内壁和真空室外壁,所述真空室内壁与真空室外壁焊接为一体,所述真空室内壁与真空室外壁之间形成一个夹层,焊接前在夹层内放置用于吸收中子的金属陶瓷复合中子吸收材料,真空室外壁的左下方设有中子慢化冷却剂进口,所述真空室外壁的右上方设有中子慢化冷却剂出口,在真空室内壁与真空室外壁之间的夹层内充满液态的中子慢化冷却剂。真空室形状可为任意形状,比如常见的方形或筒型真空室,通过上述设计保证真空室在热态下具有中子慢化和中子屏蔽以及冷却功能,保证真空室在内部中子辐射及热态下长期稳定地工作。(The invention discloses a vacuum chamber with neutron moderation, neutron shielding and cooling functions, wherein the wall of the vacuum chamber adopts an inner wall and outer wall interlayer welding structure, and the vacuum chamber comprises: vacuum chamber inner wall and vacuum chamber outer wall, vacuum chamber inner wall and vacuum chamber outer wall welding are as an organic whole, form an intermediate layer between vacuum chamber inner wall and the vacuum chamber outer wall, place the cermet composite neutron absorbing material who is used for absorbing the neutron in the intermediate layer before the welding, the left side below of vacuum chamber outer wall is equipped with neutron moderation coolant import, the upper right side of vacuum chamber outer wall is equipped with neutron moderation coolant export, is filled with liquid neutron moderation coolant in the intermediate layer between vacuum chamber inner wall and the vacuum chamber outer wall. The shape of the vacuum chamber can be any shape, such as a common square or cylindrical vacuum chamber, and the design ensures that the vacuum chamber has neutron moderation, neutron shielding and cooling functions in a thermal state, and ensures that the vacuum chamber stably works in internal neutron radiation and the thermal state for a long time.)

1. A vacuum chamber with neutron moderation, neutron shielding and cooling functions, wherein the wall of the vacuum chamber adopts an inner wall and outer wall interlayer welding structure, and the vacuum chamber comprises: vacuum chamber inner wall (1) and vacuum chamber outer wall (2), vacuum chamber inner wall (1) and vacuum chamber outer wall (2) welding are as an organic whole, form an intermediate layer between vacuum chamber inner wall (1) and vacuum chamber outer wall (2), place cermet composite neutron absorbing material (4) that are used for absorbing the neutron in the intermediate layer before the welding, the left side below of vacuum chamber outer wall (2) is equipped with neutron moderation coolant import, the upper right side of vacuum chamber outer wall (2) is equipped with neutron moderation coolant export, is filled with liquid neutron moderation coolant (3) in the intermediate layer between vacuum chamber inner wall (1) and vacuum chamber outer wall (2).

2. The vacuum chamber with neutron moderating and neutron shielding and cooling functions as claimed in claim 1, wherein the inner wall (1) and the outer wall (2) of the vacuum chamber are made of 0Cr18Ni9 stainless steel plate.

3. The vacuum chamber with neutron moderating and neutron shielding and cooling functions according to claim 1, wherein said neutron moderating coolant (3) is used to slow down the moving speed of neutrons and cool the wall of the vacuum chamber, and the neutron moderating coolant (3) is discharged from the neutron moderating coolant outlet by a water pump, circulated outside the vacuum chamber, and cooled by a refrigerator.

4. The vacuum chamber with neutron moderating and neutron shielding and cooling functions as claimed in claim 1, wherein the thickness of the inner wall (1) of the vacuum chamber, the thickness of the outer wall (2) of the vacuum chamber, the thickness of the interlayer, and the filling amount of the cermet neutron absorbing material (4) are determined according to the neutron radiation intensity.

5. The vacuum chamber with neutron moderation and neutron shielding and cooling functions of claim 1, wherein the vacuum chamber is sealed by a metal seal or an ethylene propylene diene monomer rubber ring seal, and the metal is oxygen-free copper or pure aluminum.

Technical Field

The invention belongs to the field of nuclear material separation, and particularly relates to a vacuum chamber with neutron moderation, neutron shielding and cooling functions.

Background

In the field of nuclear material separation, vacuum chambers require good vacuum sealing properties, and also require moderation and shielding of neutron radiation within the vacuum chamber, and cooling of the walls of the vacuum chamber. And the conventional vacuum chamber does not have the function at present. It is therefore necessary to design a vacuum chamber with neutron moderation and neutron shielding and cooling functions.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a vacuum chamber with the functions of neutron moderation, neutron shielding and cooling, which has reasonable structural design and strong practicability, and can be used for moderating and shielding neutron radiation in the vacuum chamber, cooling the wall of the vacuum chamber, realizing high vacuum sealing and stably working for a long time.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

a vacuum chamber with neutron moderation and neutron shielding and cooling functions, wherein the wall of the vacuum chamber adopts an inner wall and outer wall interlayer welding structure, and the vacuum chamber comprises: vacuum chamber inner wall 1 and real empty room outer wall 2, real empty room inner wall 1 welds as an organic wholely with real empty room outer wall 2, form an intermediate layer between vacuum chamber inner wall 1 and the real empty room outer wall 2, place the cermet composite neutron absorbing material 4 who is used for absorbing the neutron in the intermediate layer before the welding, the left side below of real empty room outer wall 2 is equipped with neutron moderation coolant import, the upper right side of real empty room outer wall 2 is equipped with neutron moderation coolant export, is full of liquid neutron moderation coolant 3 in the intermediate layer between real empty room inner wall 1 and real empty room outer wall 2.

Preferably, the shape of the vacuum chamber may be any shape, such as a general square or cylinder type vacuum chamber.

Preferably, the inner wall 1 and the outer wall 2 of the vacuum chamber are both made of 0Cr18Ni9 stainless steel plate,

preferably, the neutron moderating coolant 3 is used for slowing down the neutron movement speed and cooling the wall of the vacuum chamber, and the neutron moderating coolant 3 flows out of the neutron moderating coolant outlet through a water pump, circulates outside the vacuum chamber and is cooled down through a refrigerator.

Preferably, the thickness of the inner wall 1 of the vacuum chamber, the thickness of the outer wall 2 of the vacuum chamber, the thickness of the interlayer and the filling amount of the metal ceramic composite neutron absorption material 4 are determined according to the neutron radiation intensity.

As a preferred scheme, the vacuum chamber is sealed by adopting metal seal or ethylene propylene diene monomer rubber ring seal, and the metal is oxygen-free copper or pure aluminum.

Has the advantages that: compared with the conventional vacuum chamber, the vacuum chamber with the neutron moderating, neutron shielding and cooling functions provided by the invention has the following advantages:

the vacuum chamber with the functions of neutron moderation, neutron shielding and cooling solves the problems that the conventional vacuum chamber cannot shield neutron radiation and the vacuum chamber cannot be cooled at present, can be applied to an environment with neutron radiation, and meets the functional requirements of neutron moderation, neutron shielding, wall cooling of the vacuum chamber and high vacuum sealing of the thermal vacuum chamber.

The vacuum chamber with the neutron moderating, neutron shielding and cooling functions provided by the invention has the advantages of simple structure and good processing manufacturability.

Drawings

The invention has the following drawings:

FIG. 1 is an outline view of a vacuum chamber with neutron moderation and neutron shielding and cooling functions according to the present invention.

FIG. 2 is a cross-sectional view of a vacuum chamber with neutron moderation and neutron shielding and cooling functions in accordance with the present invention.

In the figure: 1-inner wall of vacuum chamber; 2-outer wall of vacuum chamber; 3-neutron moderating coolant; 4-cermet composite neutron absorbing material.

Detailed Description

The present invention is described in further detail below with reference to FIGS. 1-2.

As shown in fig. 2, a vacuum chamber with neutron moderating, neutron shielding and cooling functions, the wall of the vacuum chamber adopting an inner and outer wall sandwich welding structure, comprises: vacuum chamber inner wall 1 and real empty room outer wall 2, form an intermediate layer between real empty room inner wall 1 and the real empty room outer wall 2, real empty room inner wall 1 welds as an organic wholely with real empty room outer wall 2, places the cermet composite neutron absorbing material 4 who is used for absorbing the neutron in the intermediate layer before the welding, the left side below of real empty room outer wall 2 is equipped with neutron moderation coolant import, the upper right side of real empty room outer wall 2 is equipped with neutron moderation coolant export, is filled with liquid neutron moderation coolant 3 in the intermediate layer between real empty room inner wall 1 and real empty room outer wall 2.

Preferably, the flange sealing mode of the vacuum chamber is the same as that of a conventional vacuum chamber, and the sealing can be realized by adopting metal sealing (oxygen-free copper or aluminum) or ethylene propylene diene monomer rubber ring sealing.

Preferably, the shape of the vacuum chamber may be any shape, such as a general square or cylinder type vacuum chamber.

Preferably, the inner wall 1 and the outer wall 2 of the vacuum chamber are both made of 0Cr18Ni9 stainless steel plate,

preferably, the neutron moderating coolant 3 is used for slowing down the neutron movement speed and cooling the wall of the vacuum chamber, and the neutron moderating coolant 3 flows out of the neutron moderating coolant outlet through a water pump, circulates outside the vacuum chamber and is cooled down through a refrigerator.

Preferably, the thickness of the inner wall 1 of the vacuum chamber, the thickness of the outer wall 2 of the vacuum chamber, the thickness of the interlayer and the filling amount of the metal ceramic composite neutron absorption material 4 are determined according to the neutron radiation intensity.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Those not described in detail in this specification are within the skill of the art.