阅读说明：本技术 液态偏滤器和改善液态偏滤器表面膜流铺展特性的方法 (Liquid divertor and method for improving spreading characteristics of surface membrane flow of liquid divertor ) 是由 倪明玖 阳倦成 刘佰奇 于 2020-07-20 设计创作，主要内容包括：本发明提供液态偏滤器和改善液态偏滤器表面膜流铺展特性的方法,涉及磁约束核聚变装置技术领域,具体地,在该液态偏滤器的固体壁面上覆盖有金属丝网；该改善液态偏滤器表面膜流铺展特性的方法则包括在液态偏滤器的固体壁面上安装覆盖液态偏滤器的固体壁面的金属丝网。本发明缓解了现有技术中存在的液态锂所形成的膜流无法较好地在液态偏滤器的固体壁面形成均匀、稳定的大面积铺展的技术问题。(The invention provides a liquid divertor and a method for improving the spreading characteristic of a surface membrane flow of the liquid divertor, which relate to the technical field of a magnetic confinement nuclear fusion device, in particular to a method for improving the spreading characteristic of the surface membrane flow of the liquid divertor, wherein a metal wire mesh is covered on the solid wall surface of the liquid divertor; the method for improving the membrane flow spreading characteristic on the surface of the liquid divertor comprises the step of installing a metal wire mesh covering the solid wall surface of the liquid divertor on the solid wall surface of the liquid divertor. The invention solves the technical problem that the membrane flow formed by the liquid lithium in the prior art cannot be well spread on the solid wall surface of the liquid divertor uniformly and stably in a large area.)

1. A liquid divertor, characterized by: and a metal wire mesh (1) is covered on the solid wall surface (2) of the liquid divertor.

2. A liquid divertor of claim 1, wherein: the metal wire mesh (1) is made of stainless steel, molybdenum or tungsten.

3. A liquid divertor of claim 1, wherein: the wire mesh (1) comprises a plurality of transverse wires (11) and a plurality of longitudinal wires (12);

the transverse metal wires (11) are parallel to each other pairwise and are spaced from each other; the plurality of longitudinal metal wires (12) are mutually parallel and spaced in pairs, and the plurality of transverse metal wires (11) and the plurality of longitudinal metal wires (12) are mutually connected to form a net shape.

4. A liquid divertor of claim 3, wherein: the meshes (10) of the wire mesh (1) are formed in a square shape.

5. A liquid divertor of claim 4, wherein: with the cross-sectional circle diameter of the transverse wires (11) being R1, the cross-sectional circle diameter of the longitudinal wires (12) being R2, and the side length of the meshes of the wire net (1) being D, then: D-2R 1-2R 2.

6. A liquid divertor of claim 5, wherein: d is more than 0mm and less than or equal to 10 mm; and 0mm < R1 ═ R2 ≤ 5 mm.

7. A liquid divertor of claim 1, wherein: the wire mesh (1) is connected to the solid wall surface (2) of the liquid divertor by screws.

8. A liquid divertor of claim 1, wherein: the metal wire mesh (1) is connected to the solid wall surface (2) of the liquid divertor in a spot welding mode.

9. A liquid divertor of claim 1, wherein: the metal wire net (1) is a mat-type net.

10. A method for improving the spreading characteristics of a membrane flow on the surface of a liquid divertor, characterized by: comprises installing a wire mesh (1) on the solid wall of a liquid divertor covering the solid wall (2) of the liquid divertor.

Technical Field

The invention relates to the technical field of magnetic confinement nuclear fusion devices, in particular to a liquid divertor and a method for improving the spreading characteristic of a membrane flow on the surface of the liquid divertor.

Background

Magnetic confinement nuclear fusion is an important way to realize nuclear fusion energy and peaceful utilization, however, the realization of the magnetic confinement nuclear fusion device needs to solve a series of scientific and technical problems, and scientists all over the world are making efforts, wherein the part facing the first wall of plasma is one of important parts which need to be realized urgently. The temperature of plasma at the center of the magnetic confinement fusion reactor is extremely high, and reaches hundreds of millions of degrees, on one hand, the high-temperature plasma needs to be confined by adopting a strong magnetic field, and simultaneously, a liquid divertor part is also needed to realize the functions of energy transfer and discharge of plasma impurities, and the liquid divertor with liquid lithium film flow coverage is one of the better schemes; however, due to the large surface tension of lithium, the poor wettability with the solid wall, the strong magnetic field of the environment and the large temperature gradient, the membrane flow formed by the liquid lithium cannot be well spread on the solid wall surface of the liquid divertor uniformly and stably in a large area, and the area on the solid wall surface of the liquid divertor not covered by the lithium membrane flow is directly ablated by the high-temperature plasma, so that the whole damage of the liquid divertor component is caused.

Disclosure of Invention

The invention aims to provide a liquid divertor and a method for improving the spreading characteristic of a membrane flow on the surface of the liquid divertor, so as to solve the technical problem that the membrane flow formed by liquid lithium in the prior art cannot be well spread uniformly and stably on the solid wall surface of the liquid divertor in a large area.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, embodiments of the present invention provide a liquid divertor having a solid wall covered with a wire mesh.

In alternative embodiments, the wire mesh is made of stainless steel or molybdenum or tungsten.

In an alternative embodiment, the wire mesh comprises a plurality of transverse wires and a plurality of longitudinal wires;

the plurality of transverse metal wires are parallel to each other pairwise and are spaced from each other; the plurality of longitudinal metal wires are mutually parallel and spaced in pairs, and the plurality of transverse metal wires and the plurality of longitudinal metal wires are mutually connected to form a net shape.

In a further alternative embodiment, the meshes of the wire mesh are formed in a square shape.

In a further alternative embodiment, with the cross-sectional circle diameter of the transverse wires being R1, with the cross-sectional circle diameter of the longitudinal wires being R2, and with the side length of the meshes of the wire net being D, then: D-2R 1-2R 2.

In still further alternative embodiments, 0mm < D ≦ 10 mm; and 0mm < R1 ═ R2 ≤ 5 mm.

In an alternative embodiment, the wire mesh is attached to the solid wall surface of the liquid divertor by screws.

In an alternative embodiment, the wire mesh is spot welded to the solid wall of the liquid divertor.

In an alternative embodiment, the wire mesh is a mat-type mesh.

In a second aspect, embodiments of the present invention provide a method for improving the membrane flow spreading characteristics across the surface of a liquid divertor, comprising mounting a wire mesh over the solid wall of the liquid divertor.

The embodiment of the invention can realize the following beneficial effects:

in a first aspect, embodiments of the present invention provide a liquid divertor having a wire mesh covering a solid wall surface of the liquid divertor.

In the embodiment of the invention, the effect of fully covering the spreading surface with the liquid lithium in advance is achieved by enabling the flowing liquid lithium to form a stable liquid lithium layer in the metal wire mesh, and as the solid wall surface of the liquid divertor is pre-wetted by the liquid lithium, the liquid lithium flowing out continuously afterwards can achieve the effect of fully spreading when the lithium flows on the pre-wetted surface; meanwhile, due to the particularity of the metal wire mesh structure, all meshes of the metal wire mesh are communicated, so that the effect of updating lithium inside all meshes of the metal wire mesh in real time in the flowing process of the lithium film can be realized, and the deposition of impurities on the solid wall surface is reduced. This example enables 100% coverage of the liquid lithium film on the solid wall of the liquid divertor.

In conclusion, the embodiment at least alleviates the technical problem that the membrane flow formed by the liquid lithium in the prior art cannot be well spread on the solid wall surface of the liquid divertor uniformly and stably in a large area, so that the liquid divertor initially has the expected functions, and the application of the liquid divertor in the actual magnetic confinement fusion reactor is well paved.

In a second aspect, embodiments of the present invention provide a method for improving the membrane flow spreading characteristics on the surface of a liquid divertor, comprising mounting a wire mesh covering the solid wall of the liquid divertor on the solid wall of the liquid divertor; the effect can be obtained by referring to the liquid divertor provided by the first aspect of the embodiment of the present invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a top view of a liquid divertor of the present invention with a wire mesh covering the solid wall;

fig. 2 is a side view of a liquid divertor provided by an embodiment of the present invention in a state where a solid wall surface is covered with a wire mesh.

Icon: 1-wire mesh; 10-mesh; 11-transverse wire; 12-longitudinal wire; 2-solid wall.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "longitudinal", "transverse", "inner", "outer", and the like refer to orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that are conventionally used to place products of the present invention, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "transverse", "longitudinal", and the like do not imply a requirement that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "transverse" merely means that the direction is more horizontal than "longitudinal" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.