Vacuum vessel

Abstract

The present invention provides a vacuum container, which includes an inner shell, an outer shell, and an anti-radiation layer made of an anti-radiation material disposed between the outer shell and the inner shell. A spacer layer formed by winding spacer bars is further provided between the outer shell and the inner shell; the spacer bars include wire meshes and adsorption materials. The wire meshes are sleeve-shaped structures woven by filamentary members, and the adsorption materials are filled in the wire meshes. The spacer bars of the present invention have an adsorption function. During use, they only need to be wound inside the vacuum container, and there is no need to separately arrange adsorption materials additionally, which improves the performance level of the vacuum container.

Description

Technical Field

[0001] The present invention relates to the field of cryogenic vacuum technology, and particularly to a vacuum container. Background Art

[0002] Vacuum containers such as vacuum dewars are widely used in the storage and transportation of cryogenic liquids, effectively reducing the consumption of cryogenic liquids. Existing cryogenic dewars generally adopt a composite vacuum insulation form, in which an anti-radiation material such as aluminized film with a low blackbody radiation coefficient is wound on the inner layer of the double-layer dewar container, and the interlayer space is evacuated. Thereby effectively reducing the heat transfer between the inner and outer layers of the dewar container.

[0003] Existing dewar containers generally have vacuum adsorbents inside to adsorb the gases released by the adsorbent material under vacuum and the gases left over during the evacuation process. However, in order to facilitate the placement of the vacuum adsorbent, the structure of the dewar container needs to be set, making its structure complex. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a spacer for a vacuum container to solve the problem of the complexity of placing the adsorbent material in the prior art.

[0005] To achieve the above object and other related objects, the present invention provides a vacuum container, which includes an inner shell, an outer shell, and an anti-radiation layer made of an anti-radiation material disposed between the outer shell and the inner shell. An interlayer formed by winding spacers is further provided between the outer shell and the inner shell; the spacer includes a wire mesh and an adsorbent material, the wire mesh is a sleeve-like structure woven by filamentary members, and the adsorbent material is filled in the wire mesh.

[0006] Preferably, the interlayer is located in the anti-radiation layer.

[0007] Preferably, the interlayer is located between the inner shell and the anti-radiation layer.

[0008] Preferably, the spacer is wound in a spiral shape.

[0009] Preferably, the spacer is wound in an equidistant spiral shape.

[0010] Preferably, the filamentary member is a material with low thermal conductivity and low outgassing rate.

[0011] Preferably, the filamentary member is a glass fiber filament.

[0012] Preferably, the adsorbent material is in granular form.

[0013] Preferably, the adsorbent material is a molecular sieve.

[0014] Preferably, the spacer is in a long strip shape.

[0015] As described above, the spacer for a vacuum container of the present invention has the following beneficial effects: its spacer layer is a spacer strip with an adsorption material, so the spacer strip has an adsorption function, and there is no need to separately set an adsorption material, which improves the performance level of the vacuum container. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the vacuum container of the present invention.

[0017] Figure 2 Shown is a cross-sectional view of the spacer for the vacuum container of the present invention.

[0018] DESCRIPTION OF REFERENCE NUMERALS

[0019] 1 Outer shell

[0020] 2 Inner shell

[0021] 3 Anti-radiation layer

[0022] 4 Spacer

[0023] 41 Wire mesh

[0024] 42 Adsorption material

[0025] 100 Vacuum interlayer area

[0026] 200 Storage cavity DETAILED DESCRIPTION OF THE INVENTION

[0027] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0028] Please refer to Figure 1 and Figure 2 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the ratio relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0029] Such as Figure 1 and Figure 2As shown in the figure, the present invention provides a vacuum container, which comprises an inner shell 2, an outer shell 1, and an anti-radiation layer 3 made of anti-radiation material disposed between the outer shell 2 and the inner shell 1. A spacer layer wound by spacer bars 4 is further provided between the outer shell 1 and the inner shell 2. A vacuum interlayer area 100 is formed between the inner shell and the outer shell, and a storage cavity 200 for storing substances is formed inside the inner shell; the spacer bar 4 comprises a wire mesh 41 and an adsorption material 42. The wire mesh 41 is a sleeve-like structure woven by filamentary members, and the adsorption material 42 is filled in the wire mesh. The spacer layer in the present invention is the spacer bar 4 with the adsorption material 42, so the spacer bar 4 has an adsorption function, and there is no need to separately arrange an adsorption material additionally, which improves the performance level of the vacuum container.

[0030] In this embodiment, the spacer layer is located in the anti-radiation layer 3, or between the inner shell 2 and the anti-radiation layer 3, and can be directly wound around the inner shell 2. The spacer layer can also be arranged both in the anti-radiation layer 3 and between the inner shell 2 and the anti-radiation layer 3.

[0031] In this embodiment, the spacer bar 4 is wound in a spiral shape, and it partially supports the anti-radiation layer on the radial cross-section of the vacuum container, saving the consumption of the spacer bar 4. In this embodiment, the spacer bar is wound in an equidistant spiral shape, and its winding intercept can be 1 cm - 10 m.

[0032] In this embodiment, the filamentary member is a material with low thermal conductivity and low outgassing rate, such as glass fiber filaments and asbestos. The low thermal conductivity in this embodiment generally refers to less than 1 (W·m -1 .K -1 ), and the low outgassing rate is generally less than 1×10 -2 (Pa·L·s -1 .cm -2 ). As long as these values are satisfied, the above-mentioned wire mesh can be manufactured.

[0033] For the convenience of filling, the adsorption material 42 is in a granular shape in this embodiment. The adsorption material 42 is a molecular sieve. A molecular sieve is a silicon-aluminate compound with a cubic lattice. The molecular sieve has a uniform microporous structure, and the pore diameters of its cavities are uniform. These cavities can adsorb molecules smaller than its diameter into the interior of the cavity, and have a preferential adsorption ability for polar molecules and unsaturated molecules. Therefore, molecules with different polarities, saturation degrees, molecular sizes, and boiling points can be separated, that is, it has the function of "screening" molecules, so it is called a molecular sieve.

[0034] For the convenience of use, the spacer bar 4 is in a long strip shape in this embodiment, and the above-mentioned spacer layer is formed by spiral winding.

[0035] In summary, the vacuum container of the present invention uses spacer bars with adsorption functions, eliminating the need for separately setting adsorption materials, and improving the performance level of the vacuum container. Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A vacuum container, characterized in that, It includes an inner shell, an outer shell, and an anti-radiation layer made of anti-radiation material disposed between the outer shell and the inner shell. A spacer layer wound by spacer bars is further provided between the outer shell and the inner shell; the spacer bars include wire meshes and adsorption materials. The wire meshes are sleeve-like structures woven by filamentary members, and the adsorption materials are filled in the wire meshes; Spacer layers are provided both in the anti-radiation layer and between the inner shell and the anti-radiation layer; The spacer bars are strip-shaped and wound in an equidistant spiral shape; the filamentary members are materials with low thermal conductivity and low outgassing rate.

2. The vacuum container according to claim 1, characterized in that: The filamentary members are glass fiber filaments.

3. The vacuum container according to claim 1, characterized in that: The adsorption materials are granular.

4. The vacuum container according to claim 1, wherein: The adsorption materials are molecular sieves.

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