Liquid lithium divertor device

Abstract

The application belongs to the technical field of magnetic confinement nuclear fusion devices, and discloses a liquid lithium divertor device. The liquid lithium divertor device comprises a liquid film generator, the liquid film generator comprises a liquid lithium input area and a liquid lithium conveying area; a divertor target plate and a heating bottom plate are detachably connected to the liquid lithium conveying area; the inlet of the liquid lithium input area is in communication with a conveying pipeline, a plurality of first sub-flow channels are arranged in a dendritic structure in the liquid lithium input area; the inlet of the liquid lithium conveying area is in communication with the outlet of the first sub-flow channel through a vertical flow channel, the outlet of the liquid lithium conveying area is in contact with the top of the divertor target plate, and the flow direction of the liquid lithium in the liquid lithium conveying area is parallel to the flow direction of the liquid lithium in the divertor target plate. The liquid lithium divertor device can continuously convey liquid lithium to the target plate and make the flow uniform, can improve the spreading of the liquid lithium when flowing along the target plate, obtain a larger spreading area, prevent spattering of the liquid lithium, and conveniently replace the target plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic confinement nuclear fusion devices, and particularly relates to a liquid lithium divertor device. BACKGROUND

[0002] The divertor is a component of a toroidal fusion device such as a tokamak device, and is used to divert the charged particles in the outer shell layer of the discharge into a separate chamber, where the charged particles bombard the baffle and become neutral particles that are extracted. By providing the divertor, the high-energy particles in the outer shell layer can be prevented from bombarding the main discharge chamber wall, thereby avoiding the release of secondary particles from the chamber wall that can cool the discharge.

[0003] In the tokamak high-temperature plasma vacuum chamber, the plasma-facing component is referred to as the first wall component, which receives high-energy particle bombardment from the plasma, while the limiter / divertor limits the interaction between the plasma and the material to the limiter area, avoids damage to other first wall materials from high-energy particles from the plasma, reduces impurity backflow, and alleviates impurity pollution to the plasma. The existing tokamak device mainly selects solid materials such as carbon, beryllium, and tungsten as the divertor material, but as the tokamak device develops, the high heat load impact, plasma and neutron irradiation on the divertor become stronger and stronger, which gradually approaches the bearing limit of the existing solid material, and the service life and the structural change of the crystal under neutron irradiation and transmutation reaction are also a problem that has plagued solid-state divertors.

[0004] To solve the above technical problems, the liquid metal lithium divertor has become one of the research hotspots at home and abroad. The liquid metal lithium divertor not only has a longer service life and higher heat load transport capacity than traditional solid material walls, but also has good self-renewal ability and strong resistance to neutron irradiation damage. At the same time, lithium, as a low-neutron-number first wall material with strong chemical activity, has good compatibility with the plasma, can effectively control impurity particles, reduce particle recirculation, and improve plasma confinement performance. Moreover, under plasma bombardment, a poloidal asymmetric lithium radiation mantle is formed on the surface of the flowing lithium wall, shielding the heat flow from the plasma, effectively alleviating the corrosion and damage of the plasma heat flow to the surface of the divertor target plate. It not only has obvious engineering application value, but also is one of the possible controlled nuclear fusion first wall schemes.

[0005] However, the existing liquid metal lithium divertor in the prior art currently has the following problems: Figure 1 The lithium surface coverage diagram of the liquid lithium divertor device in the EAST device shown in FIG. 1, Figure 1The middle circle is an uncovered area, and it can be seen that the spreading coverage of liquid lithium on the divertor target plate is only about 50%, and the area not covered by liquid lithium is prone to direct erosion and damage by high-temperature plasma, thereby causing the overall destruction of the liquid divertor component.

[0006] In order to improve the spreading of liquid lithium on the divertor target plate, the existing liquid metal lithium divertor is provided with multiple liquid outlet holes to generate a lithium film flow in a manner of vertically supplying liquid outward from the divertor target plate. Figure 2 As shown in the figure, the multiple liquid outlet holes are arranged horizontally and uniformly at the top, and each small hole has a size of 0.8mm*0.8mm. The liquid flows out from the liquid outlet hole in a direction perpendicular to the target plate from bottom to top, and then flows downward by gravity to generate a film flow. Although this setting can improve the spreading of liquid lithium on the divertor target plate to some extent, it still has the following defects: 1) the distribution of liquid in the pipeline is uneven, resulting in different liquid flow rates of each liquid outlet hole, which still causes uneven liquid distribution in the film flow area; 2) the liquid flows out vertically from the target plate and flows downward only by gravity, but due to the large surface tension of lithium, the contact angle is large, that is, the wettability with the solid wall is poor, and the liquid is also difficult to spread spontaneously around when the gravity and surface tension are balanced, which makes the liquid lithium more inclined to gather into a strand flow on the target plate rather than spreading into a liquid film flow, resulting in poor spreading on the target plate; 3) the divertor target plate area and the film flow generator area are designed in one body, which is difficult to replace, resulting in large experimental engineering quantity and material consumption. SUMMARY

[0007] In order to solve the technical problems of insufficient spreading area of lithium film flow on the divertor target plate, uneven distribution of lithium film flow and difficulty in replacement in the prior art, the purpose of the present application is to provide a liquid lithium divertor device.

[0008] The liquid lithium divertor device of the present application is realized by the following technical scheme:

[0009] The present application provides a liquid lithium divertor device, which comprises a liquid film generator, a divertor target plate, a heating bottom plate and a conveying pipeline.

[0010] The liquid film generator of the present application comprises a liquid lithium input area and a liquid lithium conveying area.

[0011] The divertor target plate and the heating bottom plate are sequentially detachably connected to the liquid lithium conveying area by bolts to form a sandwich structure, so that the target plate can be replaced in the later stage, thereby effectively reducing the experimental engineering quantity and material consumption.

[0012] The inlet of the liquid lithium input area is communicated with the outlet of the delivery pipeline, so that the liquid lithium input through the delivery pipeline can enter the liquid lithium input area through the inlet of the liquid lithium input area and be temporarily stored in the liquid lithium input area.

[0013] The first flow channel is arranged in the liquid lithium input area, and the first flow channel comprises a plurality of first sub-flow channels.

[0014] In the present application, the inlet of the liquid lithium delivery area is communicated with the outlet of the first sub-flow channel through a vertical flow channel, the outlet of the liquid lithium delivery area is in contact with the top of the filter target plate, and the flow direction of the liquid lithium in the liquid lithium delivery area is parallel to the flow direction of the liquid lithium in the filter target plate, so that the liquid lithium in the traditional filter is supplied outward from the vertical direction of the target plate to the parallel direction of the flow direction of the liquid lithium in the filter target plate, so that the flow of the liquid lithium in the liquid lithium delivery area is more balanced, and the spatter caused by excessive flow is prevented, so that the distribution of the liquid lithium flowing out of the liquid lithium delivery area is more uniform, and the liquid lithium flowing out of the liquid lithium delivery area can be driven by the cooperation of its own gravity and the pressure generated by the flow, so that the film flow is spread more uniformly on the filter target plate, thereby improving the spreading coverage of the liquid lithium on the filter target plate.

[0015] In some preferred embodiments of the present application, a second flow channel is arranged in the liquid lithium delivery area, and the second flow channel comprises a plurality of second sub-flow channels, and the number of the second sub-flow channels is half of the number of the first sub-flow channels.

[0016] In some preferred embodiments of the present application, the number of the first sub-flow channels is 20, i.e. the number of the second sub-flow channels is 10, such an arrangement combination not only disperses the flow, but also ensures that the flow area of the sudden expansion section changes slowly, prevents the flow difference in each flow channel from being too large, and achieves the effect of uniformly dispersing the flow.

[0017] In some preferred embodiments of the present application, a flow guide area is further arranged between the outlet of the liquid lithium conveying area and the top of the filter target plate; and the width of the flow guide area is the same as the width of the filter target plate. The flow guide area is formed by a plurality of flow guide grooves, and the plurality of flow guide grooves are arranged in parallel and at equal intervals in the width direction of the liquid lithium conveying area. The flow direction of the liquid lithium in each flow guide groove is parallel to the flow direction of the liquid lithium in the filter target plate, so as to increase the spreading property of the liquid lithium when flowing along the filter target plate, and enable the liquid lithium to spread and cover a larger area when flowing.

[0018] In some preferred embodiments of the present application, the width of each flow guide groove is 2mm±0.2mm, and the height is 0.5mm±0.05mm; and the interval between adjacent two flow guide grooves is 1mm±0.1mm. It should be noted that the size of the flow guide groove is the optimal cross-sectional size and distribution in a certain flow range obtained by COMSOL simulation and experimental data in the research process of the present application. The arrangement of the flow guide groove not only makes the flow area consistent with the cross-sectional area of the lithium inlet pipe without flow congestion, but also the dense arrangement and flat outlet can further improve the uniformity of the liquid distribution in the membrane flow area, thereby further improving the uniformity of the membrane flow formed by the liquid lithium on the filter target plate.

[0019] In some preferred embodiments of the present application, angle adjusting plates are detachably connected to both sides of the liquid film generator through bolts, and the angle adjusting plates are used to adjust the inclination angle of the liquid film generator. Since the filter target plate and the heating bottom plate are detachably installed on the liquid film generator through bolts, the bolts are in a tightened state in the use state, and then the inclination angle of the liquid film generator is adjusted, so as to adjust the inclination angle of the overall structure of the liquid lithium filter device.

[0020] In some preferred embodiments of the present application, a first heating wire mounting groove is formed in the back of the heating bottom plate, and the first heating wire mounting groove is distributed in a serpentine shape, so as to increase the heating area of the filter target plate and improve the heating efficiency.

[0021] In some preferred embodiments of the present application, second heating wire mounting grooves are formed in the liquid lithium input area and the liquid lithium conveying area, and the second heating wire mounting grooves are used to mount heating wires, so as to prevent the liquid lithium from solidifying before being input into the filter target plate.

[0022] In some preferred embodiments of the present application, the second heating wire mounting groove is detachably connected with a heating cover plate through bolts, so as to fix the installed heating wire in position through the heating cover plate and improve the heating efficiency of the heating wire.

[0023] In some preferred embodiments of the present application, the liquid lithium deflector device further comprises a liquid lithium collecting groove, which is in the shape of a truncated cylinder and is arranged below the deflector target plate to collect the liquid lithium flowing from the target plate.

[0024] In some preferred embodiments of the present application, the outlet of the liquid lithium collecting groove is in communication with the inlet of the conveying pipeline, so that the liquid lithium can continue to be input into the liquid lithium input area through the conveying pipeline when the liquid lithium in the liquid lithium input area is less.

[0025] In some preferred embodiments of the present application, the bottom of the liquid lithium collecting groove is provided with a third heating wire mounting groove for mounting a heating wire to prevent the liquid lithium in the liquid lithium collecting groove from solidifying.

[0026] In some preferred embodiments of the present application, the top of the liquid lithium input area is further provided with a cover plate to prevent the liquid lithium from splashing out during the flowing process.

[0027] In some preferred embodiments of the present application, the materials of the liquid film generator, the deflector target plate, the heating bottom plate and the conveying pipeline are stainless steel, which is corrosion-resistant to avoid the pollution of the liquid lithium caused by the corrosion of the components.

[0028] In some preferred embodiments of the present application, the inner diameter of the conveying pipeline is 8mm±0.5mm. The conveying pipeline with the above-mentioned size can not only keep the flow rate of the liquid lithium within the flow metering range at the target flow rate to ensure the measurement of the flow meter, but also can effectively prevent the flow from being blocked after the conveying pipeline is connected with the deflector flow guide area outlet due to the similar cross-sectional area of the conveying pipeline and the deflector flow guide area outlet. In addition, if the inner diameter of the conveying pipeline is too large, the pipeline with a larger inner diameter needs a larger heating power, i.e. a more dense arrangement of heating wires, which has the risk of burning the heating wires. Therefore, the use of the above-mentioned size of the conveying pipeline can also effectively avoid the burning of the heating wires.

[0029] In some preferred embodiments of the present application, the length and width of the heating bottom plate are the same as the length and width of the deflector target plate.

[0030] In some preferred embodiments of the present application, a plurality of first threaded mounting holes are formed on the liquid lithium delivery area of the liquid lithium deflector device, and a plurality of second threaded mounting holes and third threaded mounting holes are formed on the deflector target plate and the heating base plate respectively, which are matched with the first threaded mounting holes, so that the deflector target plate and the heating base plate are sequentially connected to the liquid lithium delivery area by bolts.

[0031] In some preferred embodiments of the present application, a plurality of fourth threaded mounting holes are formed around the second heating wire mounting groove, and a plurality of fifth threaded mounting holes are formed on the heating cover plate, which are matched with the fourth threaded mounting holes, so that the heating cover plate is connected to the second heating wire mounting groove by bolts.

[0032] In some preferred embodiments of the present application, a plurality of sixth threaded mounting holes are formed on both sides of the liquid film generator, and a plurality of seventh threaded mounting holes are formed on both angle adjusting plates, which are matched with the sixth threaded mounting holes, so that the heating cover plate is connected to both sides of the liquid film generator by bolts.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] The liquid lithium limiter device of the present application comprises a liquid film generator, a limiter target plate, a heating base plate and a conveying pipeline, wherein the liquid film generator comprises a liquid lithium input area and a liquid lithium conveying area, the limiter target plate and the heating base plate are detachably connected to the liquid lithium conveying area in sequence by bolts, so that the target plate can be replaced in later period, thereby effectively reducing the experimental engineering quantity and material consumption, the inlet of the liquid lithium input area is communicated with the outlet of the conveying pipeline, so that the liquid lithium input through the conveying pipeline can enter the liquid lithium input area through the outlet of the conveying pipeline and the inlet of the liquid lithium input area and be temporarily stored in the liquid lithium input area, thereby preparing for the subsequent uniform spreading on the limiter target plate, a plurality of first sub-flow channels are arranged in the liquid lithium input area and are distributed in a dendritic structure to form a first flow channel, thereby improving the liquid lithium to enter the liquid lithium conveying area in a uniform distribution form through the special dendritic structure, the inlet of the liquid lithium conveying area is communicated with the outlets of the plurality of first sub-flow channels through a vertical flow channel, and the outlet of the liquid lithium conveying area is in contact with the top of the limiter target plate, so that the liquid lithium flowing out of the plurality of first sub-flow channels is re-divided by the vertical flow channel and enters the liquid lithium conveying area in a more uniform manner, the flow direction of the liquid lithium in the liquid lithium conveying area is parallel to the flow direction of the liquid lithium in the limiter target plate, so that the liquid lithium flowing out of the liquid lithium conveying area supplies liquid to the limiter target plate in a parallel manner with the flow direction of the liquid lithium in the limiter target plate, thereby making the flow of the liquid lithium in the liquid lithium conveying area more balanced, preventing splashing caused by excessive flow, and making the liquid lithium flowing out of the liquid lithium conveying area more uniformly distributed, and enabling the film flow to spread more uniformly on the limiter target plate under the synergistic driving of the gravity and the pressure generated by the flow, thereby improving the spreading coverage of the liquid lithium on the limiter target plate.

[0035] The liquid lithium limiter device of the present application comprises a liquid film generator, a limiter target plate, a heating base plate and a conveying pipeline, wherein the liquid film generator comprises a liquid lithium input area and a liquid lithium conveying area, the limiter target plate and the heating base plate are detachably connected to the liquid lithium conveying area in sequence by bolts, so that the target plate can be replaced in later period, thereby effectively reducing the experimental engineering quantity and material consumption, the inlet of the liquid lithium input area is communicated with the outlet of the conveying pipeline, so that the liquid lithium input through the conveying pipeline can enter the liquid lithium input area through the outlet of the conveying pipeline and the inlet of the liquid lithium input area and be temporarily stored in the liquid lithium input area, thereby preparing for the subsequent uniform spreading on the limiter target plate, a plurality of first sub-flow channels are arranged in the liquid lithium input area and are distributed in a dendritic structure to form a first flow channel, thereby improving the liquid lithium to enter the liquid lithium conveying area in a uniform distribution form through the special dendritic structure, the inlet of the liquid lithium conveying area is communicated with the outlets of the plurality of first sub-flow channels through a vertical flow channel, and the outlet of the liquid lithium conveying area is in contact with the top of the limiter target plate, so that the liquid lithium flowing out of the plurality of first sub-flow channels is re-divided by the vertical flow channel and enters the liquid lithium conveying area in a more uniform manner, the flow direction of the liquid lithium in the liquid lithium conveying area is parallel to the flow direction of the liquid lithium in the limiter target plate, so that the liquid lithium flowing out of the liquid lithium conveying area supplies liquid to the limiter target plate in a parallel manner with the flow direction of the liquid lithium in the limiter target plate, thereby making the flow of the liquid lithium in the liquid lithium conveying area more balanced, preventing splashing caused by excessive flow, and making the liquid lithium flowing out of the liquid lithium conveying area more uniformly distributed, and enabling the film flow to spread more uniformly on the limiter target plate under the synergistic driving of the gravity and the pressure generated by the flow, thereby improving the spreading coverage of the liquid lithium on the limiter target plate. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A schematic diagram of the lithium surface coverage of the liquid lithium limiter device in the EAST device in the prior art.

[0037] Figure 2 A schematic diagram of the structure of the liquid lithium limiter in the prior art.

[0038] Figure 3 A schematic diagram of the structure of the liquid lithium limiter device in Example 1 of the present application.

[0039] Figure 4 A schematic diagram of the three-layer sandwich structure formed by the liquid film generator, the limiter target plate and the heating base plate in Example 1 of the present application.

[0040] Figure 5 A schematic diagram of the structure of Figure 4 .

[0041] Figure 6 A schematic diagram of the cross-sectional structure of Figure 4 .

[0042] Figure 7 A schematic diagram of the structure of the liquid film generator in Example 1 of the present application.

[0043] Figure 8 A schematic diagram of the structure of the flow guide groove in a preferred embodiment of the present application.

[0044] Figure 9 A schematic diagram of the structure of the angle adjusting plate in a preferred embodiment of the present application.

[0045] Figure 10 A schematic diagram of the structure of the liquid lithium limiter device in a preferred embodiment of the present application.

[0046] Figure 11 A schematic diagram of the structure of the liquid lithium limiter device in a preferred embodiment of the present application in an experimental device.

[0047] Figure 12 A schematic diagram of the structure of the liquid lithium limiter device in a preferred embodiment of the present application in an experimental device. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below.

[0049] Example 1

[0050] Referring to Figure 3 , the present embodiment provides a liquid lithium limiter device, which comprises a liquid film generator 1, a limiter target plate 2, a heating base plate 3 and a delivery pipeline 4. The liquid film generator 1 in the present embodiment comprises a liquid lithium input area 11 and a liquid lithium delivery area 12.

[0051] Referring to Figure 4 In the embodiment, the deflector target plate 2 and the heating base plate 3 are sequentially detachably connected to the liquid lithium conveying area 12 by bolts to form a three-layer sandwich structure.

[0052] Referring to Figure 5 , Figure 5 To Figure 4 the schematic diagram of the explosion structure, in order to ensure that the deflector target plate 2 and the heating base plate 3 can be detachably connected to the liquid lithium conveying area 12 by bolts, a plurality of first threaded mounting holes 16 are formed on the liquid lithium conveying area 12, and second threaded mounting holes 21 and third threaded mounting holes 32 matched with the first threaded mounting holes 16 are formed on the deflector target plate 2 and the heating base plate 3, respectively, so that the bolts sequentially pass through the corresponding third threaded mounting holes 32, second threaded mounting holes 21 and first threaded mounting holes 16, and are tightened after the positions are adjusted, so as to realize the detachable connection of the deflector target plate 2 and the heating base plate 3 to the liquid lithium conveying area 12 by bolts, so that the liquid lithium conveying area 12, the deflector target plate 2 and the heating base plate 3 form a three-layer sandwich structure. In the embodiment, the detachable structure can facilitate the replacement of the target plate in the later stage, thereby effectively reducing the experimental engineering quantity and material consumption.

[0053] Referring to Figure 3 and Figure 6 In the embodiment, the inlet of the liquid lithium input area 11 is communicated with the outlet of the conveying pipeline 4, so that after the liquid lithium is input through the conveying pipeline 4, it can enter the liquid lithium input area 11 through the outlet of the conveying pipeline 4 and the inlet of the liquid lithium input area 11 and be temporarily stored in the liquid lithium input area 11, so as to prepare for the subsequent uniform spreading on the deflector target plate 2. The top of the liquid lithium input area 11 is also provided with a cover plate 8 to prevent the liquid lithium from splashing out during flowing.

[0054] Referring to Figure 6 and Figure 7 In the embodiment, a first flow channel is arranged in the liquid lithium input area 11, and the first flow channel includes 20 first sub-flow channels 111, which are distributed in a dendritic structure, so that after the liquid lithium enters the liquid lithium input area 11, it is divided into 20 flow channels by the 20 first sub-flow channels 111, thereby improving the uniform distribution of the liquid lithium into the liquid lithium conveying area through the special dendritic structure and improving the uniform distribution of the liquid lithium.

[0055] Referring to Figure 6 and Figure 7In the embodiment, the liquid lithium delivery area 12 is communicated with the 20 first sub-channels 111 through the vertical flow channel 13, and the outlet of the liquid lithium delivery area 12 is in contact with the top of the filter target plate 2, so that the liquid lithium flowing out of the first sub-channels 111 is re-distributed by the vertical flow channel 13 and then enters the liquid lithium delivery area 12 in a more uniform manner. Moreover, the flow direction of the liquid lithium in the liquid lithium delivery area 12 is parallel to the flow direction of the liquid lithium in the filter target plate 2, so that the flow of the liquid lithium in the liquid lithium delivery area 12 is more balanced, the splashing caused by excessive flow is prevented, the liquid lithium flowing out of the liquid lithium delivery area 12 is more uniformly distributed, and the film flow is more uniformly spread on the filter target plate 2, thereby improving the spreading coverage of the liquid lithium on the filter target plate 2.

[0056] Please refer to Figure 7 In a preferred embodiment of the present application, the liquid lithium delivery area 12 is provided with a second flow channel, and the second flow channel includes a plurality of second sub-channels 121. The number of the second sub-channels 121 is half of the number of the first sub-channels 111, i.e. the number of the second sub-channels 121 is 10. Moreover, the flow direction of the liquid lithium in the 10 second sub-channels 121 is parallel to the flow direction of the liquid lithium in the filter target plate, and the inlet of each second sub-channel 121 is vertically arranged with the outlet of the first sub-channel 111, so that the liquid lithium flowing out of the 20 first sub-channels 111 is re-distributed by the vertically arranged vertical flow channel 13 and then flows into the 10 second sub-channels 121 in a more uniform manner. Since each second sub-channel 121 is parallel to the flow direction of the liquid lithium in the filter target plate, the uniformity of the liquid flow flowing out of each second sub-channel is improved, so that the liquid lithium flowing out can be driven by the synergy of the gravity and the pressure generated by the flow, so that the film flow is more uniformly spread on the filter target plate, thereby improving the spreading coverage of the liquid lithium on the filter target plate 2.

[0057] Please refer to Figure 7 and Figure 8In a preferred embodiment of the present application, a flow guide area is further arranged between the outlet of the liquid lithium delivery area 12 and the top of the filter target plate 2. The flow guide area is formed by a plurality of flow guide grooves 5, and the plurality of flow guide grooves 5 are arranged in parallel and at equal intervals in the width direction of the liquid lithium delivery area 12. The width of the flow guide area is the same as the width of the filter target plate 2. The flow direction of the liquid lithium in each flow guide groove 5 is parallel to the flow direction of the liquid lithium in the filter target plate 2, so as to increase the spreading property of the liquid lithium flowing along the filter target plate 2, and enable the liquid lithium to spread and cover a larger area when flowing.

[0058] Please refer to Figure 8 In a preferred embodiment of the present application, the width of each flow guide groove 5 is 2 mm, and the height is 0.5 mm. The interval between adjacent two flow guide grooves 5 is 1 mm, so as to further improve the uniformity of the liquid distribution in the film flow area, and further improve the uniformity of the film flow of the liquid lithium on the filter target plate 2.

[0059] In a preferred embodiment of the present application, the liquid lithium filter device further comprises two angle adjusting plates 6, which are detachably connected to the two sides of the liquid film generator 1, so as to adjust the inclination angle of the liquid film generator 1 through the angle adjusting plates 6. In order to realize the detachable connection of the angle adjusting plates 6 to the two sides of the liquid film generator 1, please refer to Figure 5 and Figure 9 In the present embodiment, a sixth threaded mounting hole 17 is arranged on each of the two sides of the liquid film generator 1, and a seventh threaded mounting hole 61 matched with the sixth threaded mounting hole 17 is arranged on each of the two angle adjusting plates 6. In order to realize the detachable connection of the angle adjusting plates 6 to the two sides of the liquid film generator 1 through bolts, the bolts are sequentially passed through the corresponding seventh threaded mounting hole 61 and the sixth threaded mounting hole 17, and then tightened after the position is adjusted. The structure after being tightened is shown in Figure 9 , and the overall structure diagram after being connected with the delivery pipeline 4 is shown in Figure 10 The present application realizes the adjustment of the inclination angle of the liquid film generator 1 through the angle adjusting plates 6. Since the filter target plate 2 and the heating bottom plate 3 are detachably installed on the liquid film generator 1 through bolts, the bolts are in a tightened state in the use state. Therefore, the adjustment of the inclination angle of the liquid film generator 1 can realize the adjustment of the inclination angle of the overall structure of the liquid lithium filter device.

[0060] Please refer to Figures 3-6In a preferred embodiment of the present application, the length and width of the heating base plate 3 are the same as those of the filter target plate 2, and the back of the heating base plate 3 is provided with a first heating wire mounting groove 31 in a serpentine shape to increase the heating area of the filter target plate 2 and improve the heating efficiency.

[0061] Please refer to Figures 4-6 In a preferred embodiment of the present application, the liquid lithium input area 11 and the liquid lithium conveying area 12 are both provided with a second heating wire mounting groove 14 for mounting a heating wire to prevent the liquid lithium from solidifying before being input into the filter target plate 2. In this embodiment, the second heating wire mounting groove 14 is provided with a plurality of fourth threaded mounting holes around it, and the heating cover plate 15 is provided with a fifth threaded mounting hole 151 matching the fourth threaded mounting holes. The fifth threaded mounting hole 151 and the fourth threaded mounting hole are sequentially penetrated by a bolt, and the bolt is tightened after being properly positioned to detachably connect the heating cover plate 15 to the second heating wire mounting groove 14 by the bolt, thereby fixing the position of the mounted heating wire by the heating cover plate 15 and improving the heating efficiency of the heating wire.

[0062] In a preferred embodiment of the present application, the liquid lithium filter device is used in the experimental device 9, and further comprises a liquid lithium collecting tank 7 in the shape of an oblique truncated cylinder and arranged below the filter target plate 2 to collect the liquid lithium flowing from the target plate. The outlet of the liquid lithium collecting tank 7 is communicated with the inlet of the conveying pipeline 4, so that the liquid lithium can be continuously input into the liquid lithium input area 11 through the conveying pipeline 4 when the liquid lithium in the liquid lithium input area 11 is insufficient. The structure diagram of the liquid lithium filter device in the experimental device 9 is shown in Figure 11 and Figure 12 .

[0063] In a preferred embodiment of the present application, the bottom of the liquid lithium collecting tank 7 is provided with a third heating wire mounting groove for mounting a heating wire to prevent the liquid lithium in the liquid lithium collecting tank 7 from solidifying.

[0064] In a preferred embodiment of the present application, the material of the liquid film generator 1, the filter target plate 2, the heating base plate 3 and the conveying pipeline 4 is stainless steel, which is corrosion resistant to avoid the pollution of the liquid lithium caused by the corrosion of the components.

[0065] Please refer to Figures 10-12In a preferred embodiment of the present application, the inner diameter of the delivery pipe 4 is 8 mm. The delivery pipe 4 with the inner diameter of 8 mm can ensure that the flow rate of the liquid lithium in the pipe is within the flow measurement range at the target flow rate, and the arrangement density of the heating wires outside the pipe is maintained below the safe density to prevent the heating wires from burning out. In addition, the cross-sectional area of the pipe is approximately equal to the cross-sectional area of the outlet of the flow guide area of the filter, and the combination thereof can prevent flow jamming.

[0066] The filter can continuously deliver the liquid lithium to the target plate and make the flow rate uniform, can improve the spreading of the liquid lithium when flowing along the target plate, obtain a larger spreading area, and prevent spatter of the liquid lithium, and can conveniently replace the target plate.

[0067] Obviously, the above-mentioned embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A liquid lithium divertor apparatus, characterized by, The liquid film generator (1), the filter target plate (2), the heating base plate (3) and the conveying pipeline (4); The liquid film generator (1) comprises a liquid lithium input area (11) and a liquid lithium conveying area (12); The filter target plate (2) and the heating base plate (3) are sequentially detachably connected to the liquid lithium conveying area (12) by bolts, forming a sandwich structure. The inlet of the liquid lithium input area (11) is communicated with the outlet of the conveying pipeline (4), so that the liquid lithium can enter and temporarily store into the liquid lithium input area (11) through the conveying pipeline (4). The liquid lithium input area (11) is provided with a first flow channel, and the first flow channel comprises a plurality of first sub-flow channels (111), and the plurality of first sub-flow channels (111) are distributed in a dendritic structure. The inlet of the liquid lithium conveying area (12) is communicated with the outlet of the plurality of first sub-flow channels (111) through a vertical flow channel (13), the outlet of the liquid lithium conveying area (12) is in contact with the top of the filter target plate (2), and the flow direction of the liquid lithium in the liquid lithium conveying area (12) is parallel with the flow direction of the liquid lithium in the filter target plate (2), so that the liquid lithium in the liquid lithium input area (11) is uniformly distributed after being treated by the liquid lithium conveying area (12), and then is uniformly spread on the filter target plate (2). The liquid lithium conveying area (12) is provided with a second flow channel, and the second flow channel comprises a plurality of second sub-flow channels (121), and the number of the second sub-flow channels (121) is half of the number of the first sub-flow channels (111). The flow direction of the liquid lithium in each second sub-flow channel (121) is parallel with the flow direction of the liquid lithium in the filter target plate, and the inlet of each second sub-flow channel (121) is vertically arranged with the outlet of the first sub-flow channel (111). The outlet of the liquid lithium conveying area (12) and the top of the filter target plate (2) are further provided with a flow guide area, and the width of the flow guide area is the same as the width of the filter target plate (2). The flow guide area is formed by a plurality of flow guide grooves (5), and the plurality of flow guide grooves (5) are arranged in parallel and at equal intervals in the width direction of the liquid lithium conveying area (12). The flow direction of the liquid lithium in each flow guide groove (5) is parallel with the flow direction of the liquid lithium in the filter target plate (2), so as to increase the spreading property of the liquid lithium flowing along the filter target plate (2).

2. The liquid lithium divertor apparatus of claim 1, wherein, The width of each flow guide groove (5) is 2mm±0.2mm, and the height is 0.5mm±0.05mm. The interval between adjacent two flow guide grooves (5) is 1mm±0.1mm.

3. The liquid lithium divertor apparatus of claim 1, wherein, Angle adjusting plates (6) are detachably connected to both sides of the liquid film generator (1), and the angle adjusting plates (6) are used for adjusting the inclination angle of the liquid film generator (1).

4. The liquid lithium divertor apparatus of claim 1, wherein, The back of the heating base plate (3) is provided with a first heating wire mounting groove (31), and the first heating wire mounting groove (31) is distributed in a serpentine shape, so as to increase the heating area of the filter target plate (2).

5. The liquid lithium divertor apparatus of claim 1, wherein, Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2). Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2).

6. The liquid lithium divertor apparatus of claim 1, wherein, Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2). Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2).

7. The liquid lithium divertor apparatus of claim 1, wherein, Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2).

8. The liquid lithium divertor apparatus of claim 1, wherein, Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2). Second heating wire installation grooves (14) are arranged on the liquid lithium input area (11) and the liquid lithium delivery area (12), and the second heating wire installation grooves (14) are used for installing heating wires to prevent the liquid lithium from solidifying before being input to the filter target plate (2).

Images