Neutral beam injection liquid-cooled drift pipe and controlled fusion equipment

Abstract

The present invention discloses a neutral beam injection liquid-cooled drift pipe and a controlled fusion device, belonging to the field of plasma technology and controlled nuclear fusion power generation technology. The neutral beam injection liquid-cooled drift pipe of the present invention includes a drift pipe assembly and a liquid cooling circuit assembly; the drift pipe assembly includes an inner shielding layer and an outer shielding layer, and the inner shielding layer is arranged on the inner side of the outer shielding layer; the liquid cooling circuit assembly includes a liquid supply pipe, a liquid cooling pipe and a liquid return pipe, the liquid supply pipe and the liquid return pipe are located outside one end of the drift pipe assembly, the liquid cooling pipe is arranged between the inner shielding layer and the outer shielding layer and contacts the inner shielding layer and the outer shielding layer, the input end of the liquid cooling pipe is connected to the output end of the liquid supply pipe, and the output end of the liquid cooling pipe is connected to the input end of the liquid return pipe. The present invention can better withstand the impact of high-energy neutral particles, has good shielding effect, is simple to make, has low cost, and has low risk of liquid cooling medium leakage.

Description

Technical Field

[0001] The invention relates to the field of plasma technology and controlled nuclear fusion power generation technology, and in particular to a neutral beam injection liquid-cooled drift pipeline and a controlled fusion device. Background Art

[0002] As a clean energy solution, controlled nuclear fusion mainly includes two technical paths: magnetic confinement and inertial confinement. Among the technical paths of magnetic confinement controlled nuclear fusion, the Tokamak device is considered to be a technical path with a greater possibility of achieving controlled nuclear fusion power generation.

[0003] Neutral beam injection (NBI) is an important component of the high-power auxiliary heating and current drive system of the tokamak host. The pipeline connecting NBI and the tokamak host is usually called a drift pipe. When the high-energy neutral particle beam in NBI passes through the drift pipe, due to the beam divergence, a part of the high-energy neutral particles will bombard the drift pipe. The drift pipe needs to withstand the impact of the high-energy neutral particle beam and the heat it carries. Therefore, the drift pipe needs a certain strength and good heat transfer to avoid the impact of high-energy neutral particles and the thermal expansion of the heat carried to damage the drift pipe. Since the current tokamak experimental devices at home and abroad are too small, the drift pipe is usually short, and the probability of being impacted by high-energy neutral particle beams is low, so the structure is simple. Since the scale of the tokamak device that can achieve controllable nuclear fusion power generation in the future will be much larger than the existing tokamak experimental device, the beam divergence of high-energy neutral particles will be further enlarged, so the drift pipe will be bombarded by more high-energy neutral particles, and the existing NBI design scheme cannot meet the requirements.

[0004] At present, the neutral beam injection drift pipeline has a small size and a simple structure. It is mainly processed by copper plates. Liquid cooling channels are drilled in the copper plates, and stamping dies are made to press the drilled copper plates into the shape of drift channels. The liquid cooling channels in the copper plates are connected to the liquid cooling copper tubes through joints to form a liquid cooling circuit. This production method has many steps and requires high mold production costs. The liquid cooling copper tubes are exposed to the inside of the drift pipeline and are at risk of being penetrated by high-energy neutral particles. There is a high risk of coolant leakage and it is not suitable for the production of longer drift pipelines. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a neutral beam injection liquid-cooled drift pipe that can better withstand the impact of high-energy neutral particles, has good shielding effect, is simple to manufacture, has low cost, and has low risk of liquid cooling medium leakage.

[0006] A neutral beam injection liquid-cooled drift pipe according to an embodiment of the present invention includes:

[0007] A drift pipe assembly, the drift pipe assembly comprising an inner shielding layer and an outer shielding layer, the inner shielding layer being arranged on the inner side of the outer shielding layer;

[0008] A liquid cooling circuit assembly, the liquid cooling circuit assembly comprising a liquid supply pipe, a liquid cooling pipe and a liquid return pipe, the liquid supply pipe and the liquid return pipe are located outside one end of the drift pipe assembly, the liquid cooling pipe is arranged between the inner shielding layer and the outer shielding layer and contacts the inner shielding layer and the outer shielding layer, the input end of the liquid cooling pipe is connected to the output end of the liquid supply pipe, and the output end of the liquid cooling pipe is connected to the input end of the liquid return pipe.

[0009] The working process of the neutral beam injection into the liquid-cooled drift pipe of the embodiment of the present invention is: start the liquid cooling loop assembly, so that the liquid cooling medium flows through the liquid supply pipe, the liquid cooling pipe and the return liquid pipe in sequence, forming a liquid cooling medium working cycle, so that the high-energy neutral particle beam passes through the drift pipe assembly, and the liquid cooling medium in the liquid cooling loop assembly takes away the heat transferred when the high-energy neutral particles collide with the neutral injection liquid-cooled drift pipe of the embodiment of the present invention.

[0010] The neutral beam injection liquid-cooled drift pipe according to the embodiment of the present invention has the following advantages: on the one hand, since the drift pipe assembly adopts a double-layer shielding structure composed of an inner shielding layer and an outer shielding layer, the structural strength is high. When the length of the drift pipe assembly increases relative to the length of the existing single-structure drift pipe, it can withstand the impact of high-energy neutral particles. At the same time, by providing a liquid cooling circuit assembly, the heat transferred when the high-energy neutral particles collide with the neutral injection liquid-cooled drift pipe of the embodiment of the present invention is taken away by using the liquid cooling medium flowing through the liquid cooling pipe located in the double-layer shielding structure, so that the drift pipe assembly can be effectively cooled, thereby effectively avoiding the impact of high-energy neutral particles and the heat carried by the heat expansion to damage the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention, thereby meeting the length requirements of the drift pipe for the future scale-up of the controlled nuclear fusion power generation device; on the other hand, since the drift pipe assembly adopts an inner shielding structure composed of an inner shielding layer and an outer shielding layer, the drift pipe assembly can be effectively cooled. The double-layer shielding structure is composed of an inner shielding layer and an outer shielding layer, and a liquid cooling pipe is arranged in the double-layer shielding structure. The radiation of high-energy neutral particles can be well shielded through the configuration of the inner shielding layer, the liquid cooling medium in the liquid cooling pipe and the outer shielding layer, and the shielding effect is good; on the other hand, since the liquid cooling pipe is located between the inner shielding layer and the outer shielding layer and is not exposed to the inner channel of the inner shielding layer, when high-energy neutral particles pass through the drift pipe assembly, it is beneficial to avoid the high-energy neutral particles directly impacting the liquid cooling pipe and damaging the liquid cooling pipe, thereby reducing the risk of leakage of the liquid cooling medium; in addition, the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention adopts an inner shielding layer, an outer shielding layer and a liquid cooling circuit assembly, and the liquid supply pipe and the return pipe of the liquid cooling circuit assembly are arranged outside one end of the drift pipe assembly, so that the liquid cooling pipe is clamped between the inner shielding layer and the outer shielding layer. Compared with the single drift pipe in the prior art, the processing and manufacturing is simple and the cost is low.

[0011] In some embodiments, the inner shielding layer includes a plurality of inner shielding side modules, which are sequentially spliced ​​together to form the inner shielding layer; the outer shielding layer includes a plurality of outer shielding side modules, which are sequentially spliced ​​together to form the outer shielding layer; the plurality of inner shielding side modules and the plurality of outer shielding side modules overlap one by one in the radial direction of the drift pipe assembly.

[0012] In some embodiments, the inner shielding layer also includes a plurality of first connecting plug-ins, which are inserted one-to-one between the adjacent inner shielding side modules; the outer shielding layer also includes a plurality of second connecting plug-ins, which are inserted one-to-one between the adjacent outer shielding side modules.

[0013] In some embodiments, the liquid cooling pipe is provided between each set of corresponding overlapping inner shielding side modules and outer shielding side modules.

[0014] In some embodiments, in each group of corresponding overlapping inner shielding side modules and outer shielding side modules, the inner shielding side module includes a plurality of independent inner shielding sub-modules, and the plurality of inner shielding sub-modules are arranged in sequence along the axial direction of the drift pipe assembly; the outer shielding side module includes a plurality of independent outer shielding sub-modules, and the plurality of outer shielding sub-modules are arranged in sequence along the axial direction of the drift pipe assembly, and the plurality of inner shielding sub-modules and the plurality of outer shielding sub-modules overlap one by one in the radial direction of the drift pipe assembly; the axial ends of each two adjacent groups of correspondingly overlapping inner shielding sub-modules and outer shielding sub-modules in the circumferential direction of the drift pipe assembly are aligned respectively.

[0015] In some embodiments, the liquid cooling pipes are correspondingly arranged between each group of corresponding overlapping inner shielding sub-modules and the outer shielding sub-modules, and the input and output ends of all the liquid cooling pipes between each group of corresponding overlapping inner shielding side modules and the outer shielding side modules are located at one end of the drift pipe assembly.

[0016] In some embodiments, a first mounting groove for installing the liquid cooling pipe is provided on a surface of the inner shielding side module facing the outer shielding side module, and a second mounting groove for installing the liquid cooling pipe is provided on a surface of the outer shielding side module facing the inner shielding side module, and the second mounting groove and the first mounting groove are opposite to each other.

[0017] In some embodiments, the liquid cooling circuit assembly further includes a liquid supply splitter module and a liquid return splitter module, wherein the liquid supply splitter module is connected between the output end of the liquid supply pipe and the input ends of all the liquid cooling pipes, and the liquid return splitter module is connected between the input end of the liquid return pipe and the output ends of all the liquid cooling pipes.

[0018] In some embodiments, the liquid supply splitter module includes a first liquid supply splitter, a liquid supply splitter connecting tube, and a second liquid supply splitter. The number of the first liquid supply splitter is one, and the number of the second liquid supply splitter and the liquid supply splitter connecting tube are multiple and the number is the same. The output end of the liquid supply pipeline is connected to the first liquid supply splitter, and the first liquid supply splitter is connected to the multiple second liquid supply splitters through the multiple liquid supply splitter connecting tubes. The multiple second liquid supply splitters are correspondingly arranged at one end of multiple groups of correspondingly overlapping inner shielding side modules and outer shielding side modules, and each of the second liquid supply splitters is connected to the input end of each of the liquid supply pipelines between the correspondingly overlapping inner shielding side modules and the outer shielding side modules.

[0019] The liquid return splitter module includes a first liquid return splitter, a liquid return splitter connecting pipe and a second liquid return splitter. The number of the first liquid return splitter is one, and there are multiple second liquid return splitters and the liquid return splitter connecting pipes and the number is the same. The input end of the liquid return pipeline is connected to the first liquid return splitter, and the first liquid return splitter is connected to multiple second liquid return splitters through multiple liquid return splitter connecting pipes. Multiple second liquid return splitters are correspondingly arranged at one end of multiple groups of correspondingly overlapping inner shielding side modules and outer shielding side modules, and each second liquid return splitter is connected to the output end of each liquid supply pipeline between the correspondingly overlapping inner shielding side modules and the outer shielding side modules.

[0020] In some embodiments, all pipe connections within the liquid cooling circuit assembly are welded connections.

[0021] In some embodiments, the material of the inner shielding layer is chromium zirconium copper, the material of the outer shielding layer is stainless steel, the material of the liquid cooling pipe is copper, and the liquid cooling medium in the liquid cooling pipe is water.

[0022] The invention also proposes a controllable fusion device.

[0023] The controllable fusion device according to the embodiment of the present invention comprises the neutral beam injection liquid-cooled drift pipe described in the embodiment of the present invention.

[0024] Since the controlled fusion device of the embodiment of the present invention adopts the neutral beam injection liquid-cooled drift conduit of the embodiment of the present invention, the controlled fusion device of the embodiment of the present invention has the same technical effect as the neutral beam injection liquid-cooled drift conduit of the embodiment of the present invention, which will not be repeated here.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 A schematic diagram of the assembly of a neutral beam injection liquid-cooled drift pipe according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0029] Figure 3 A schematic diagram of an inner shield side module, a liquid cooling pipeline and an outer shield side module of a neutral beam injection liquid cooling drift pipeline according to an embodiment of the present invention;

[0030] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0031] Figure 5 for Figure 3 The enlarged schematic diagram at C in the middle;

[0032] Figure 6 A partial explosion diagram of a neutral beam injected into a liquid-cooled drift pipe according to an embodiment of the present invention;

[0033] Figure 7 for Figure 6 The enlarged schematic diagram at D in the middle;

[0034] Figure 8 for Figure 6 The enlarged schematic diagram at E in the middle;

[0035] Fig. 9 A partial structural schematic diagram of a liquid cooling circuit assembly for injecting a neutral beam into a liquid-cooled drift pipe according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Drift pipe assembly 1; inner shielding layer 101; inner shielding side module 1011; first slot 10111; inner shielding submodule 10112; first mounting slot 10113; first connecting plug-in 1012; outer shielding layer 102; outer shielding side module 1021; second slot 10211; outer shielding submodule 10212; second mounting slot 10213; second connecting plug-in 1022; liquid cooling circuit assembly 2; liquid supply pipe 201; liquid cooling pipe 202; return liquid pipe 203; liquid supply splitter module 204; first liquid supply splitter 2041; liquid supply splitter connecting pipe 2042; second liquid supply splitter 2043; return liquid splitter module 205; first return liquid splitter 2051; return liquid splitter connecting pipe 2052; second return liquid splitter 2053. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] Combine the following Figures 1 to 9 The neutral beam injection into the liquid-cooled drift tube according to an embodiment of the present invention is described.

[0040] like Figures 1 to 9As shown, the neutral beam injection liquid-cooled drift pipe according to an embodiment of the present invention includes a drift pipe assembly 1 and a liquid cooling circuit assembly 2.

[0041] Specifically, the drift pipe assembly 1 includes an inner shielding layer 101 and an outer shielding layer 102. The inner shielding layer 101 is arranged on the inner side of the outer shielding layer 102, so that the drift pipe assembly 1 forms a double-layer shielding structure, and its structural strength is higher than that of the existing drift pipe with a single structure. The inner channel of the inner shielding layer 101 is used for high-energy neutral particle beams (mainly high-energy neutron beams) to pass through. When the high-energy neutral particle beam passes through the inner channel of the inner shielding layer 101 (that is, through the drift pipe assembly 1), due to the high structural strength of the drift pipe assembly 1 with a double-layer shielding structure, when the length of the drift pipe assembly 1 increases relative to the length of the existing drift pipe with a single structure, it can withstand the impact of the high-energy neutral particle beam, effectively avoiding the impact of high-energy neutral particles from damaging the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention, thereby meeting the length requirements of the drift pipe for the future scale-up of the controlled nuclear fusion power generation device.

[0042] The liquid cooling circuit assembly 2 includes a liquid supply pipe 201, a liquid cooling pipe 202 and a liquid return pipe 203. The liquid supply pipe 201 and the liquid return pipe 203 are located outside one end of the drift pipe assembly 1. The liquid cooling pipe 202 is arranged between the inner shielding layer 101 and the outer shielding layer 102 and contacts the inner shielding layer 101 and the outer shielding layer 102. The input end of the liquid cooling pipe 202 is connected to the output end of the liquid supply pipe 201, and the output end of the liquid cooling pipe 202 is connected to the input end of the liquid return pipe 203. Thus, the liquid cooling medium of the liquid cooling circuit assembly 2 can flow from the liquid supply pipe 201 into the liquid cooling pipe 202 and from the liquid cooling pipe 202 into the liquid return pipe 203, forming a liquid cooling medium working cycle, wherein, since the liquid cooling pipe 202 is in contact with both the inner shielding layer 101 and the outer shielding layer 102, the liquid cooling medium can effectively take away the heat transferred when the high-energy neutral particles collide with the neutral injection liquid cooling drift pipe of the embodiment of the present invention, and avoid the heat carried by the high-energy neutral particles to generate thermal expansion and damage the neutral beam injection liquid cooling drift pipe of the embodiment of the present invention. Since the liquid cooling pipe 202 is located between the inner shielding layer 101 and the outer shielding layer 102, and is not exposed to the inner channel of the inner shielding layer 101, when the high-energy neutral particles pass through the drift pipe assembly 1, it is helpful to avoid the high-energy neutral particles directly impacting the liquid cooling pipe 202 and damaging the liquid cooling pipe 202, thereby reducing the risk of leakage of the liquid cooling medium.

[0043] The working process of the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention is as follows: start the liquid cooling circuit assembly 2, and make the liquid cooling medium flow through the liquid supply pipe 201, the liquid cooling pipe 202 and the liquid return pipe 203 in sequence, forming a liquid cooling medium working cycle. When the high-energy neutral particle beam passes through the drift pipe assembly 1, the heat transferred when the high-energy neutral particles collide with the neutral injection liquid-cooled drift pipe of the embodiment of the present invention is taken away by the liquid cooling medium.

[0044] The neutral beam injection liquid-cooled drift pipe according to the embodiment of the present invention has the following advantages: on the one hand, since the drift pipe assembly 1 adopts a double-layer shielding structure composed of an inner shielding layer 101 and an outer shielding layer 102, the structural strength is high. When the length of the drift pipe assembly 1 increases relative to the length of the existing single-structure drift pipe, it can withstand the impact of high-energy neutral particles. At the same time, by providing a liquid cooling circuit assembly 2, the heat transferred when the high-energy neutral particles collide with the neutral injection liquid-cooled drift pipe of the embodiment of the present invention is taken away by using the liquid cooling medium flowing through the liquid cooling pipe 202 located in the double-layer shielding structure, and the drift pipe assembly 1 can be effectively cooled, thereby effectively avoiding the impact of high-energy neutral particles and the heat carried by the heat expansion to damage the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention, thereby meeting the length requirements of the drift pipe for the future scale-up of the controlled nuclear fusion power generation device; on the other hand, since the drift pipe assembly 1 adopts a double-layer shielding structure composed of an inner shielding layer 101 and an outer shielding layer 102, and in The double-layer shielding structure is provided with a liquid cooling pipe 202. The configuration of the inner shielding layer 101, the liquid cooling medium in the liquid cooling pipe 202 and the outer shielding layer 102 can well shield the radiation of high-energy neutral particles, and the shielding effect is good. On the other hand, since the liquid cooling pipe 202 is located between the inner shielding layer 101 and the outer shielding layer 102 and is not exposed to the inner channel of the inner shielding layer 101, when high-energy neutral particles pass through the drift pipe assembly 1, it is helpful to avoid the high-energy neutral particles directly impacting the liquid cooling pipe 202 and breaking it. The liquid cooling pipe 202 is damaged, thereby reducing the risk of leakage of the liquid cooling medium; in addition, the neutral beam injection liquid-cooled drift pipe of the embodiment of the present invention adopts an inner shielding layer 101, an outer shielding layer 102 and a liquid cooling circuit component 2, and the liquid supply pipe 201 and the return pipe 203 of the liquid cooling circuit component 2 are arranged outside one end of the drift pipe component 1, so that the liquid cooling pipe 202 is clamped between the inner shielding layer 101 and the outer shielding layer 102. Compared with the single drift pipe in the prior art, the processing and manufacturing is simple and the cost is low.

[0045] In some embodiments, Figures 1 to 8As shown, the inner shielding layer 101 includes a plurality of inner shielding side modules 1011, which are sequentially spliced ​​to form the inner shielding layer 101; the outer shielding layer 102 includes a plurality of outer shielding side modules 1021, which are sequentially spliced ​​to form the outer shielding layer 102; the plurality of inner shielding side modules 1011 and the plurality of outer shielding side modules 1021 are overlapped one by one in the radial direction of the drifting pipe assembly 1. Therefore, the drifting pipe assembly 1 is simple to manufacture and easy to install.

[0046] For example, Figure 1 , Figure 2 and Figure 6 It is shown that there are four inner shielding side modules 1011 and four outer shielding side modules 1021, and the four inner shielding side modules 1011 are sequentially spliced ​​in an annular direction to form a rectangular inner shielding layer 101, and the four outer shielding side modules 1021 are sequentially spliced ​​in an annular direction to form a rectangular outer shielding layer 102, and the four inner shielding side modules 1011 and the four outer shielding side modules 1021 overlap one by one in the radial direction of the drift pipe assembly 1, such as the upper inner shielding side module 1011 and the upper outer shielding side module 1021 are opposite to each other, the lower inner shielding side module 1011 and the lower outer shielding side module 1021 are opposite to each other, the left inner shielding side module 1011 and the left outer shielding side module 1021 are opposite to each other, and the right inner shielding side module 1011 and the right outer shielding side module 1021 are opposite to each other. Therefore, the drift pipe assembly 1 is simple to manufacture and easy to install.

[0047] It should be noted that the number of inner shielding side modules 1011 and outer shielding side modules 1021 is not limited to four, and can also be two, three, five or other numbers, which can be selected according to actual needs; the inner shielding side modules 1011 and the outer shielding side modules 1021 can be flat, arc-shaped or other shapes, which can also be selected according to actual needs; the cross-sectional shape of the inner shielding layer 101 and the outer shielding layer 102 can be a polygon, such as a triangle, a quadrilateral, a pentagon, a hexagon or a circle, an ellipse or the like, which can be selected according to actual needs.

[0048] In some embodiments, Figure 1 to Figure 2 , Figures 6 to 8 As shown, the inner shielding layer 101 also includes a plurality of first connecting plug-ins 1012, and the plurality of first connecting plug-ins 1012 are correspondingly inserted between two adjacent inner shielding side modules 1011, that is, two adjacent inner shielding side modules 1011 are connected via at least one first connecting plug-in 1012; by setting the first connecting plug-in 1012, the plurality of inner shielding side modules 1011 can be conveniently and quickly spliced ​​into the inner shielding layer 101.

[0049] The outer shielding layer 102 also includes a plurality of second connecting plug-ins 1022, which are inserted one by one between two adjacent outer shielding side modules 1021, that is, two adjacent outer shielding side modules 1021 are connected by at least one second connecting plug-in 1021; by setting the second connecting plug-in 1022, the plurality of outer shielding side modules 1021 can be conveniently and quickly spliced ​​into the outer shielding layer 102.

[0050] For example, Figures 1 to 8 As shown, each of the adjacent inner shield side modules 1011 has a first butt joint surface, which can be a chamfered inclined surface. Each of the adjacent inner shield side modules 1011 has a first slot 10111 extending axially along the drift pipe assembly 1 (see FIG. Figure 5 ), the first connecting plug-in 1012 is adaptively inserted into the first slot 10111 of the first docking surface on the two adjacent inner shielding side modules 1011, thereby, the first connecting plug-in 1012 plays a role of guiding installation, and the installation is convenient. The two adjacent outer shielding side modules 1021 each have a second docking surface, which can be a chamfered inclined surface. The second docking surface of the two adjacent inner shielding side modules 1011 is respectively provided with a second slot 10211 extending along the axial direction of the drift pipe assembly 1, and the second connecting plug-in 1022 is adaptively inserted into the second slot 10211 of the second docking surface on the two adjacent inner shielding side modules 1011, thereby, the second connecting plug-in 1022 plays a role of guiding installation, and the installation is convenient.

[0051] In some embodiments, a liquid cooling pipe 202 is provided between each set of corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021. Thus, on the one hand, the liquid cooling medium in the liquid cooling pipe 202 can better take away the heat transferred to the drift pipe assembly 1 by the high-energy neutral particles, and on the other hand, it is convenient to manufacture the neutral beam injection liquid-cooled drift pipe.

[0052] In some embodiments, Figures 1 to 9As shown, in each group of corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021, the inner shielding side module 1011 includes a plurality of independent inner shielding submodules 10112, which are arranged in sequence along the axial direction of the drift pipeline assembly 1, and the outer shielding side module 1021 includes a plurality of independent outer shielding submodules 10212, which are arranged in sequence along the axial direction of the drift pipeline assembly 1, and the plurality of inner shielding submodules 10112 and the plurality of outer shielding submodules 10212 are overlapped one by one in the radial direction of the drift pipeline assembly 1; the axial ends of the two adjacent groups of corresponding overlapping inner shielding submodules 10112 and outer shielding submodules 10212 in the annular direction of the drift pipeline assembly 1 are aligned respectively. Thus, it is conducive to the installation of the neutral beam injection liquid-cooled drift pipeline in a narrow space.

[0053] In some embodiments, a liquid cooling pipe 202 is correspondingly arranged between each set of corresponding overlapping inner shielding submodules 10112 and outer shielding submodules 10212, and the input end and the output end of all liquid cooling pipes 202 between each set of corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021 are located at one end of the drift pipe assembly 1. This facilitates the installation of the neutral beam injection liquid-cooled drift pipe in a narrow space.

[0054] In some embodiments, Figure 3 As shown, a first mounting groove 10113 for mounting the liquid cooling pipe 202 is provided on one side of the inner shielding side module 1011 facing the outer shielding side module 1021, and a second mounting groove 10213 for mounting the liquid cooling pipe 202 is provided on one side of the outer shielding side module 1021 facing the inner shielding side module 1011, and the second mounting groove 10213 and the first mounting groove 10113 are directly opposite to each other. Thus, on the one hand, it is convenient to mount and fix the liquid cooling pipe 202, and on the other hand, the contact area between the liquid cooling pipe 202 and the inner shielding side module 1011 and the outer shielding side module 1021 is increased, thereby further improving the cooling effect of the drift pipe assembly 1.

[0055] In some embodiments, Figure 1 to Figure 2 , Figure 6 and Fig. 9As shown, the liquid cooling circuit assembly 2 further includes a liquid supply splitter module 204 and a liquid return splitter module 205. The liquid supply splitter module 204 is connected between the output end of the liquid supply pipe 201 and the input ends of all the liquid cooling pipes 202, and the liquid return splitter module 205 is connected between the input end of the liquid return pipe 203 and the output ends of all the liquid cooling pipes 202. By providing the liquid supply splitter module 204, it is convenient to simultaneously deliver liquid cooling medium to the liquid cooling pipes 202 distributed on each side of the drift pipe assembly 1 through a liquid supply pipe 201, and by providing the liquid return splitter module 205, it is convenient to simultaneously return the liquid cooling medium in the liquid cooling pipes 202 distributed on each side of the drift pipe assembly 1 to a liquid return pipe 203, thereby facilitating the improvement of the cooling effect of the drift pipe assembly 1.

[0056] In some embodiments, the liquid supply splitter module 204 includes a first liquid supply splitter 2041, a liquid supply splitter connecting tube 2042 and a second liquid supply splitter 2043. The number of the first liquid supply splitter 2041 is one, and there are multiple second liquid supply splitters 2043 and the liquid supply splitter connecting tube 2042 and the number is the same. The output end of the liquid supply pipeline 201 is connected to the first liquid supply splitter 2041, and the first liquid supply splitter 2041 is connected to the multiple second liquid supply splitters 2043 through multiple liquid supply splitter connecting tubes 2042. The multiple second liquid supply splitters 2043 are correspondingly arranged at one end of multiple groups of corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021, and each second liquid supply splitter 2043 is connected to the input end of each liquid supply pipeline 201 between the corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021.

[0057] The liquid return splitter module 205 includes a first liquid return splitter 2051, a liquid return splitter connecting pipe 2052 and a second liquid return splitter 2053. The number of the first liquid return splitter 2051 is one, and there are multiple second liquid return splitters 2053 and the liquid return splitter connecting pipe 2052, and the number is the same. The input end of the liquid return pipeline 203 is connected to the first liquid return splitter 2051, and the first liquid return splitter 2051 is connected to multiple second liquid return splitters 2053 through multiple liquid return splitter connecting pipes 2052. The multiple second liquid return splitters 2053 are correspondingly arranged at one end of multiple groups of correspondingly overlapping inner shielding side modules 1011 and outer shielding side modules 1021, and each second liquid return splitter 2053 is connected to the output end of each liquid supply pipeline 201 between the correspondingly overlapping inner shielding side modules 1011 and outer shielding side modules 1021.

[0058] When the liquid cooling circuit assembly 2 is working, the liquid cooling medium flows through the liquid supply pipe 201, the first liquid supply splitter 2041, the liquid supply splitter connecting pipe 2042, the second liquid supply splitter 2043, the liquid cooling pipe 202, the second liquid return splitter 2053, the liquid return splitter connecting pipe 2052, the first liquid return splitter 2051 and the liquid return pipe 203 in sequence, thereby completing a refrigeration cycle.

[0059] In a specific example, in the drift pipe assembly 1, there are four inner shielding side modules 1011 and four outer shielding side modules 1021, the number of inner shielding submodules 10112 of each inner shielding side module 1011 is six, the number of outer shielding submodules 10212 of each outer shielding side module 1021 is six, the number of liquid supply pipes 201 and liquid return pipes 203 is one each, and there are six liquid cooling pipes 201 between each group of corresponding overlapping inner shielding side modules 1011 and outer shielding side modules 1021. 02, the six liquid cooling pipes 202 correspond to the six groups of corresponding overlapping inner shielding sub-modules 10112 and outer shielding sub-modules 1021 in the corresponding overlapping inner shielding side modules 1011 and the outer shielding side modules 1021; the first liquid supply splitter 2041 and the first liquid return splitter 2051 are both one-to-four splitters, the second liquid supply splitter 2043 and the second liquid return splitter 2053 are both one-to-six splitters, and there are four liquid supply splitter connecting pipes 2042 and four liquid return splitter connecting pipes 2052.

[0060] In some embodiments, all pipe connections in the liquid cooling circuit assembly 2 are welded connections, and there are no pipe joints in the liquid cooling circuit assembly 2, which can effectively prevent leakage of the liquid cooling medium in the liquid cooling circuit assembly 2.

[0061] In some embodiments, the material of the inner shielding layer 101 is chromium zirconium copper, the material of the outer shielding layer 102 is 316L stainless steel, the material of the liquid cooling pipe 202 is copper, and the liquid cooling medium in the liquid cooling pipe 202 is water. Therefore, the neutral beam injection liquid cooling drift pipe of this embodiment not only has high structural strength and good heat transfer, but also can better shield the radiation of high-energy neutral particles through the combination of copper, water and steel.

[0062] The invention also proposes a controllable fusion device.

[0063] The controllable fusion device according to the embodiment of the present invention comprises the neutral beam injection liquid-cooled drift pipe according to the embodiment of the present invention.

[0064] Since the controlled fusion device of the embodiment of the present invention adopts the neutral beam injection liquid-cooled drift conduit of the embodiment of the present invention, the controlled fusion device of the embodiment of the present invention has the same technical effect as the neutral beam injection liquid-cooled drift conduit of the embodiment of the present invention, which will not be repeated here.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A neutral beam injection liquid-cooled drift pipe, characterized in that: include: A drift pipe assembly, the drift pipe assembly comprising an inner shielding layer and an outer shielding layer, the inner shielding layer being arranged on the inner side of the outer shielding layer; A liquid cooling circuit assembly, the liquid cooling circuit assembly comprising a liquid supply pipe, a liquid cooling pipe and a liquid return pipe, the liquid supply pipe and the liquid return pipe are located outside one end of the drift pipe assembly, the liquid cooling pipe is arranged between the inner shielding layer and the outer shielding layer and contacts the inner shielding layer and the outer shielding layer, the input end of the liquid cooling pipe is connected to the output end of the liquid supply pipe, and the output end of the liquid cooling pipe is connected to the input end of the liquid return pipe; The liquid cooling circuit assembly also includes a liquid supply splitter module and a liquid return splitter module. The liquid supply splitter module is connected between the output end of the liquid supply pipeline and the input ends of all the liquid cooling pipelines, and the liquid return splitter module is connected between the input end of the liquid return pipeline and the output ends of all the liquid cooling pipelines.

2. The neutral beam injection liquid-cooled drift pipe according to claim 1, characterized in that: The inner shielding layer includes a plurality of inner shielding side modules, which are sequentially spliced ​​together to form the inner shielding layer; the outer shielding layer includes a plurality of outer shielding side modules, which are sequentially spliced ​​together to form the outer shielding layer; the plurality of inner shielding side modules and the plurality of outer shielding side modules overlap one by one in the radial direction of the drift pipe assembly.

3. The neutral beam injection liquid-cooled drift pipe according to claim 2, characterized in that: The inner shielding layer also includes a plurality of first connecting plug-ins, which are inserted one by one between the adjacent inner shielding side modules; the outer shielding layer also includes a plurality of second connecting plug-ins, which are inserted one by one between the adjacent outer shielding side modules.

4. The neutral beam injection liquid-cooled drift pipe according to claim 2, characterized in that: The liquid cooling pipe is provided between each set of corresponding overlapping inner shielding side modules and outer shielding side modules.

5. The neutral beam injection liquid-cooled drift pipe according to claim 4, characterized in that: In each group of corresponding overlapping inner shielding side modules and outer shielding side modules, the inner shielding side module includes a plurality of independent inner shielding sub-modules, which are arranged in sequence along the axial direction of the drift pipe assembly; the outer shielding side module includes a plurality of independent outer shielding sub-modules, which are arranged in sequence along the axial direction of the drift pipe assembly, and the plurality of inner shielding sub-modules and the plurality of outer shielding sub-modules overlap one by one in the radial direction of the drift pipe assembly; the axial ends of each two adjacent groups of correspondingly overlapping inner shielding sub-modules and outer shielding sub-modules in the circumferential direction of the drift pipe assembly are aligned respectively.

6. The neutral beam injection liquid-cooled drift pipe according to claim 5, characterized in that: The liquid cooling pipes are correspondingly arranged between each group of corresponding overlapping inner shielding sub-modules and outer shielding sub-modules, and the input and output ends of all liquid cooling pipes between each group of corresponding overlapping inner shielding side modules and outer shielding side modules are located at one end of the drift pipe assembly.

7. The neutral beam injection liquid-cooled drift pipe according to any one of claims 2 to 6, characterized in that: A first mounting groove for installing the liquid cooling pipe is provided on a surface of the inner shielding side module facing the outer shielding side module, and a second mounting groove for installing the liquid cooling pipe is provided on a surface of the outer shielding side module facing the inner shielding side module, and the second mounting groove and the first mounting groove are opposite to each other.

8. The neutral beam injection liquid-cooled drift pipe according to claim 2, characterized in that: The liquid supply splitter module comprises a first liquid supply splitter, a liquid supply splitter connecting tube and a second liquid supply splitter, the number of the first liquid supply splitter is one, the number of the second liquid supply splitter and the liquid supply splitter connecting tube are multiple and the number is the same, the output end of the liquid supply pipeline is connected to the first liquid supply splitter, the first liquid supply splitter is connected to the multiple second liquid supply splitters through the multiple liquid supply splitter connecting tubes, the multiple second liquid supply splitters are correspondingly arranged at one end of multiple groups of correspondingly overlapping inner shielding side modules and outer shielding side modules, and each of the second liquid supply splitters is connected to the input end of each of the liquid supply pipelines between the correspondingly overlapping inner shielding side modules and the outer shielding side modules; The liquid return splitter module includes a first liquid return splitter, a liquid return splitter connecting pipe and a second liquid return splitter. The number of the first liquid return splitter is one, and there are multiple second liquid return splitters and the liquid return splitter connecting pipes and the number is the same. The input end of the liquid return pipeline is connected to the first liquid return splitter, and the first liquid return splitter is connected to multiple second liquid return splitters through multiple liquid return splitter connecting pipes. Multiple second liquid return splitters are correspondingly arranged at one end of multiple groups of correspondingly overlapping inner shielding side modules and outer shielding side modules, and each second liquid return splitter is connected to the output end of each liquid supply pipeline between the correspondingly overlapping inner shielding side modules and the outer shielding side modules.

9. The neutral beam injection liquid-cooled drift pipe according to any one of claims 1 to 6, characterized in that: All pipe connections in the liquid cooling circuit assembly are welded connections.

10. The neutral beam injection liquid-cooled drift pipe according to any one of claims 1 to 6, characterized in that: The material of the inner shielding layer is chromium-zirconium copper, the material of the outer shielding layer is stainless steel, the material of the liquid cooling pipe is copper, and the liquid cooling medium in the liquid cooling pipe is water.

11. A controlled fusion device, characterized in that: The invention comprises the neutral beam injection liquid-cooled drift pipe as described in any one of claims 1 to 10.

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