Composite multi-channel multi-medium pipeline for fusion device

Abstract

The invention relates to the technical field of fusion devices, and discloses a composite multi-channel multi-medium pipeline for a fusion device.The composite multi-channel multi-medium pipeline comprises a heat shielding part, a vacuum pipeline, a liquid helium conveying assembly and a first gas helium conveying assembly, and the interior of the heat shielding part is hollow to form a first containing space; the vacuum pipeline sleeves the periphery of the heat shielding part, the vacuum pipeline and the heat shielding part are arranged at an interval, a second accommodating space is formed between the heat shielding part and the vacuum pipeline, and the heat shielding part is used for shielding heat transfer between the first accommodating space and the second accommodating space; the liquid helium conveying assembly is used for conveying liquid helium and arranged in the first containing space to be fixedly connected with the heat shielding piece. The first gaseous helium conveying assembly is used for conveying first gaseous helium and arranged in the second containing space to be fixedly connected with the heat shielding piece and the vacuum pipeline. The composite multi-channel multi-medium pipeline for the fusion device is not only suitable for transmission of different media, but also capable of avoiding heat transfer between the different media.

Description

Technical Field

[0001] The present invention relates to the technical field of fusion devices, and in particular to a composite multi-channel multi-medium pipeline for a fusion device. Background Art

[0002] The fusion device contains dozens of subsystems such as the vacuum system and the cryogenic system. The cryogenic system of the fusion device transports various cryogenic liquids or gases to various cryogenic equipment for the fusion reactor to meet its cryogenic requirements. At the same time, it can control the flow of various cryogenic liquids. The collection of multiple delivery pipelines is called a multi-channel delivery pipeline.

[0003] However, the multi-channel delivery pipeline in the prior art can only deliver a single medium and is not suitable for delivering different media required by multiple cryopumps in a fusion device. Summary of the Invention

[0004] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a composite multi-channel, multi-media pipeline for a fusion device. This composite multi-channel, multi-media pipeline for a fusion device is suitable for transporting different media and can prevent heat transfer between different media, thus resolving the technical problem of prior art multi-channel pipelines that can only transport a single medium.

[0005] According to an embodiment of the present invention, a composite multi-channel multi-media pipeline for a fusion device includes: a heat shield, the interior of the heat shield being hollow to form a first accommodation space; a vacuum pipe, the vacuum pipe being sleeved on the outer periphery of the heat shield and spaced apart from the heat shield, a second accommodation space being formed between the heat shield and the vacuum pipe, the heat shield being used to shield heat transfer between the first accommodation space and the second accommodation space; a liquid helium delivery assembly, the liquid helium delivery assembly being used to transport liquid helium, the liquid helium delivery assembly being arranged in the first accommodation space and fixedly connected to the heat shield; and a first gas helium delivery assembly, the first gas helium delivery assembly being used to transport first gas helium, the first gas helium delivery assembly being arranged in the second accommodation space and fixedly connected to the heat shield and the vacuum pipe, respectively.

[0006] According to the composite multi-channel multi-media pipeline for a fusion device according to an embodiment of the present invention, by providing a liquid helium delivery component and a first gas helium delivery component, the composite multi-channel multi-media pipeline of the present application is suitable for the transmission of different media; by providing a heat shielding component, a heat shielding layer is established between the first gas helium delivery component and the liquid helium delivery component, thereby avoiding, to a certain extent, the direct heat load of the first gas helium delivery component on the liquid helium delivery component, so that the composite multi-channel multi-media pipeline of the present application is not only used for the transmission of different media, thereby improving the transmission efficiency, but also avoiding heat transfer between different media, thereby ensuring the transmission quality.

[0007] In some embodiments, the thermal shielding member includes a heat conductive member, a protective member and an absorption member. The protective member is arranged on the periphery of the heat conductive member, and the protective member is used to protect the heat conductive member. The absorption member is arranged on the periphery of the protective member and is located on the side of the heat shielding member facing the first accommodating space, and the absorption member is used to absorb heat transferred to the heat shielding member.

[0008] In some embodiments, the heat conducting member is a copper member, a nickel layer is provided on the periphery of the copper member to form the protective member, and a black paint is provided on the outer surface of the protective member facing the first accommodating space to form the absorbent member.

[0009] In some embodiments, the liquid helium delivery assembly includes a first support member and a liquid helium pipeline, the first support member is fixedly connected to the heat shielding member, the liquid helium pipeline is provided in the first support member, and the liquid helium pipeline is suitable for being filled with liquid helium.

[0010] In some embodiments, the liquid helium delivery assembly further includes a thermal insulation member, which is sleeved on the outer circumference of the liquid helium pipeline.

[0011] In some embodiments, at least a portion of an outer peripheral wall of the first support member is recessed in a direction away from the heat shield member.

[0012] In some embodiments, at least a portion of the liquid helium line forms a flexible tube.

[0013] In some embodiments, the first helium gas delivery assembly includes a second support member and a first helium gas pipeline, the second support member extends along the circumference of the vacuum pipeline, the second support member is fixedly connected to the heat shield and the vacuum pipeline, respectively, the first helium gas pipeline is provided in the second support member, and the first helium gas pipeline is suitable for being filled with the first helium gas.

[0014] In some embodiments, the first support member and / or the second support member is a polytetrafluoroethylene member; and / or the first support member and / or the second support member is provided with a through hole, and the through hole passes through the first support member and / or the second support member along the axial direction of the vacuum pipe.

[0015] In some embodiments, the through holes include a plurality of through holes, at least some of which are spaced around the periphery of the liquid helium pipeline and / or the first gas helium pipeline; at least some of the through holes provided on the first support member are located between the connection between the first support member and the thermal shielding member and the liquid helium pipeline.

[0016] In some embodiments, the second support member includes a first part and a second part connected to each other, and in the circumferential direction of the vacuum pipe, the extension length of the first part is greater than the extension length of the second part. The first helium pipeline is arranged in the second part, the first part is connected to the thermal shield, and the second part is spaced apart from the thermal shield.

[0017] In some embodiments, the first portion is provided with a plurality of groups of through-hole components, and the plurality of groups of through-hole components are arranged at intervals along the radial direction of the vacuum pipe, and each group of the through-hole components includes a plurality of through-holes, and the plurality of through-holes are arranged at intervals along the circumference of the vacuum pipe; in two adjacent groups of the through-hole components, in the radial direction of the vacuum pipe, the through-holes of one group of the through-hole components are opposite to the gap between two adjacent through-holes of the other group of the through-hole components; the second portion is provided with a plurality of through-holes, and at least some of the through-holes are located between the connection between the first portion and the second portion and the first helium pipeline.

[0018] In some embodiments, the composite multi-channel multimedia pipeline for the fusion device also includes a second helium gas pipeline, which is used to transport a second helium gas. The temperature of the second helium gas is lower than that of the first helium gas. The second helium gas pipeline is arranged on the thermal shield.

[0019] In some embodiments, at least a portion of the heat shield is bent to form a fixing groove, and the second helium pipeline is disposed in the fixing groove.

[0020] In some embodiments, the vacuum pipe, the liquid helium pipeline, the first gas helium pipeline and / or the second gas helium pipeline are stainless steel pipes; and / or the liquid helium pipeline, the first gas helium pipeline and the second gas helium pipeline are arranged in the same direction.

[0021] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 Schematic diagram of a composite multi-channel multimedia pipeline according to some embodiments of the present invention.

[0023] Figure 2 This is a front view of a composite multi-channel multimedia pipeline according to some embodiments of the present invention.

[0024] Figure 3 Schematic diagram of a heat shield according to some embodiments of the present invention.

[0025] Figure 4 Schematic diagram of a first support member according to some embodiments of the present invention.

[0026] Figure 5 Schematic diagram of a second support member according to some embodiments of the present invention.

[0027] Figure 6 Schematic diagram of a three-way structure composed of a composite multi-channel multi-media pipeline in some embodiments of the present invention.

[0028] Reference numerals: 1000. Composite multi-channel multi-media pipeline; 100, heat shield; 110, first accommodation space; 120, fixing groove; 200, vacuum pipe; 210, second accommodation space; 300. Liquid helium delivery assembly; 310, first support member; 311, first through hole; 320, liquid helium pipeline; 400. First helium delivery assembly; 410, second support member; 411, Part I; 412, second portion; 413, second through hole; 420, first helium gas pipeline; 500, second helium gas pipeline; 4111. Through-hole assembly; 4112. Through-hole. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] The following describes a composite multi-channel multimedia pipeline 1000 for a fusion device according to an embodiment of the present invention with reference to the accompanying drawings.

[0032] like Figure 1 As shown, a composite multi-channel multimedia pipeline 1000 for a fusion device according to an embodiment of the present invention includes: a heat shield 100 , a vacuum pipe 200 , a liquid helium delivery assembly 300 and a first gas helium delivery assembly 400 .

[0033] Among them, combined Figure 1 、 Figure 2 and Figure 3 As shown, the interior of the heat shield 100 is hollow to form a first accommodation space 110. The first accommodation space 110 facilitates the installation of other components within the composite multi-channel multimedia pipeline 1000, reduces the difficulty of installing other components within the composite multi-channel multimedia pipeline 1000, and allows at least one component to be installed within the heat shield 100.

[0034] Combine Figure 1 and Figure 2 As shown, the vacuum duct 200 is sleeved around the outer periphery of the heat shield 100 and spaced apart from the heat shield 100. A second accommodation space 210 is formed between the heat shield 100 and the vacuum duct 200. The heat shield 100 is used to shield heat transfer between the first accommodation space 110 and the second accommodation space 210. By sleeved around the outer periphery of the heat shield 100 and spaced apart from the heat shield 100, the vacuum duct 200 not only contains and supports internal components (such as the first helium delivery assembly 400 and the heat shield 100), but also provides vacuum insulation, thereby preventing external heat from invading the interior of the vacuum duct 200 to a certain extent, maintaining a low-temperature operating environment within the vacuum duct 200 and ensuring the operating performance of the composite multi-channel, multi-media pipeline 1000.

[0035] In a specific example, the vacuum pipe 200 can contain and support the thermal shield 100, the first helium gas delivery assembly 400, and the liquid helium delivery assembly 300. The vacuum pipe 200 also acts as a vacuum thermal insulator, thereby preventing external heat from invading the interior of the vacuum pipe 200 to a certain extent, thereby maintaining a low-temperature environment inside the vacuum pipe 200 and ensuring the normal operation of the thermal shield 100, the first helium gas delivery assembly 400, and the liquid helium delivery assembly 300.

[0036] At the same time, by utilizing the heat shield 100 to shield the heat transfer between the first storage space 110 and the second storage space 210, the heat transferred from the second storage space 210 to the first storage space 110 can be shielded to a certain extent, thereby avoiding the heat load of the second storage space 210 on the first storage space 110, so that the first storage space 110 maintains a low-temperature environment to facilitate the transmission of the low-temperature medium.

[0037] Combine Figure 1 and Figure 2 As shown, the liquid helium delivery assembly 300 is used to deliver liquid helium. The liquid helium delivery assembly 300 is disposed in the first accommodation space 110 and is fixedly connected to the heat shield 100. By fixing the liquid helium delivery assembly 300 to the heat shield 100, the heat shield 100 can stably support the liquid helium delivery assembly 300, thereby ensuring the stability of the liquid helium delivery assembly 300.

[0038] At the same time, the liquid helium delivery assembly 300 is disposed in the first accommodation space 110. Since the heat shield 100 is used to shield the heat transfer between the first accommodation space 110 and the second accommodation space 210, the direct heat load of the second accommodation space 210 on the liquid helium delivery assembly 300 is further avoided to a certain extent, thereby ensuring the stable delivery of the low-temperature medium in the liquid helium delivery assembly 300.

[0039] Combine Figure 1 and Figure 2 As shown, the first helium gas delivery assembly 400 is used to deliver the first helium gas. The first helium gas delivery assembly 400 is disposed within the second accommodation space 210 and is fixedly connected to the heat shield 100 and the vacuum pipe 200. By disposing the first helium gas delivery assembly 400 within the second accommodation space 210, the liquid helium delivery assembly 300 and the first helium gas delivery assembly 400 can be disposed on opposite sides of the heat shield 100. This allows the heat shield 100 to shield heat transfer between the first helium gas delivery assembly 400 and the liquid helium delivery assembly 300, thereby preventing the first helium gas delivery assembly 400 from exerting a heat load on the liquid helium delivery assembly 300.

[0040] At the same time, by fixedly connecting the first helium delivery assembly 400 to the heat shield 100 and the vacuum pipe 200 respectively, the vacuum pipe 200 and the heat shield 100 can also be used to cooperate to support the first helium delivery assembly 400, thereby ensuring the stability of the first helium delivery assembly 400 and thus ensuring the working performance of the first helium delivery assembly 400.

[0041] It should be noted that the first helium gas delivery assembly 400 is used to deliver helium gas, and the liquid helium delivery assembly 300 is used to deliver liquid helium. Under standard atmospheric pressure, the temperature of helium gas is higher than that of liquid helium. Therefore, under the same pressure conditions, the temperature of helium gas is necessarily higher than that of liquid helium. Therefore, the temperature of the medium in the first helium gas delivery assembly 400 is higher than the temperature of the medium in the liquid helium delivery assembly 300. The heat load of the helium gas in the first helium gas delivery assembly 400 affects the temperature of the liquid helium in the liquid helium delivery assembly 300, making it impossible for the liquid helium to maintain a low temperature.

[0042] To solve the above problems, the present application provides a heat shield 100 to shield the heat transfer between the first accommodating space 110 and the second accommodating space 210, thereby shielding the heat transfer between the first gas helium delivery assembly 400 and the liquid helium delivery assembly 300. This, in turn, avoids the direct heat load of the first gas helium delivery assembly 400 on the liquid helium delivery assembly 300 to a certain extent, reduces the heat transferred from the first gas helium delivery assembly 400 to the liquid helium delivery assembly 300, and thus enables the composite multi-channel multi-media pipeline 1000 to be used for the transmission of different media, thereby improving the delivery efficiency and working performance of the composite multi-channel multi-media pipeline 1000.

[0043] As can be seen from the above structure, the composite multi-channel multi-media pipeline 1000 for a fusion device according to an embodiment of the present application is provided with a liquid helium delivery assembly 300 and a first gas helium delivery assembly 400, so that the composite multi-channel multi-media pipeline 1000 has multiple channels, which is convenient for transporting multiple media and ensures the performance of the composite multi-channel multi-media pipeline 1000 in transporting the medium.

[0044] At the same time, by providing the heat shield 100 to shield the heat transfer between the first accommodating space 110 and the second accommodating space 210, and by arranging the liquid helium delivery assembly 300 in the first accommodating space 110 and the first gas helium delivery assembly 400 in the second accommodating space 210, the heat shield 100 can be used to shield the heat transfer between the liquid helium delivery assembly 300 and the first gas helium delivery assembly 400, thereby meeting the transmission of the low-temperature medium in the liquid helium delivery assembly 300 required by the low-temperature pump in the fusion device.

[0045] It can be understood that compared with the existing technology, the composite multi-channel multi-media pipeline 1000 for a fusion device of the present application can not only transmit multiple media, but also avoid heat transfer between multiple media to a certain extent, thereby improving the transportation efficiency and working performance of the composite multi-channel multi-media pipeline 1000.

[0046] In the description of the present invention, features defined as “first” and “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0047] In some embodiments, the thermal shield 100 includes a heat conductor, a protective element, and an absorber. The protective element is disposed on the periphery of the thermal shield and is used to protect the thermal conductor. The absorber is disposed on the periphery of the protective element and is located on the side of the thermal shield 100 facing the first accommodating space 110. The absorber is used to absorb heat transferred to the thermal shield 100. The heat conductor enables heat transfer, thereby making the temperature of the thermal shield 100 more uniform. The protective element prevents corrosion and damage to the heat conductor, extending the service life of the thermal shield 100 and ensuring the thermal shielding performance of the thermal shield 100. The absorber absorbs heat transferred to the thermal shield 100, preventing heat transfer through the thermal shield 100, thereby shielding heat transfer between the liquid helium delivery assembly 300 and the first gas helium delivery assembly 400.

[0048] In some embodiments, the heat conductor is made of copper, with a nickel layer applied to its outer periphery to form a protective layer. The outer surface of the protective layer facing the first receiving space 110 is painted black to form an absorbent layer. In other words, the heat conductor is made of copper, and due to its high thermal conductivity, it can better transfer heat, thereby making the temperature of the heat shield 100 more uniform, thereby ensuring the heat shielding effect of the heat shield 100.

[0049] At the same time, by providing a nickel layer on the outer periphery of the copper part to form a protective part, the nickel can be used to protect the heat conducting part to a certain extent to prevent the heat conducting part from rusting.

[0050] Furthermore, since some heat still remains after being shielded by the heat shield 100 and is transferred toward the first accommodation space 110 through the heat conductive member, an absorber is formed by providing black paint on the outer surface of the protective member facing the first accommodation space 110. The absorber can be used to absorb the heat transferred to the heat shield 100, thereby reducing the impact of the heat load on the liquid helium delivery assembly 300.

[0051] It should be noted that a nickel layer is retained on the outer surface of the protective member facing away from the first accommodating space 110 . The nickel layer can reflect the heat radiation of the first helium delivery assembly 400 to the liquid helium delivery assembly 300 , thereby reducing heat transfer of the first helium delivery assembly 400 .

[0052] In summary, the main body of the heat shield 100 is made of red copper, which makes the temperature of the heat shield 100 itself more uniform. By plating the entire heat shield 100 with bright nickel and spraying black paint on the outer surface of the protective member facing the first accommodating space 110, the heat shield 100 can be effectively prevented from corrosion. At the same time, it can also reflect heat transferred to the outside of the heat shield 100 and absorb heat transferred to the inside of the heat shield 100, thereby improving the thermal shielding performance of the heat shield 100 and reducing the heat load of the first gas helium delivery assembly 400 on the liquid helium delivery assembly 300.

[0053] Of course, in some other embodiments, the main body of the heat shield 100 may also be made of oxygen-free copper, aluminum, or silver to make the temperature distribution of the heat shield 100 more uniform. At the same time, the outer periphery of the main body may be plated with gold or silver to form a protective member, which can effectively prevent the heat shield 100 from corrosion and reflect heat transferred to the outside of the heat shield 100. In addition, a carbon nanotube coating or a silicon carbide (SiC) coating may be provided on the outer surface of the protective member facing the first accommodating space 110 to absorb heat transferred to the inside of the heat shield 100, thereby improving the thermal shielding performance of the heat shield 100 and reducing the heat load of the first gas helium delivery assembly 400 on the liquid helium delivery assembly 300.

[0054] In some embodiments, combined Figure 2 and Figure 4 As shown, the liquid helium delivery assembly 300 includes a first support member 310 and a liquid helium pipeline 320. The first support member 310 is fixedly connected to the heat shield 100. The liquid helium pipeline 320 is disposed within the first support member 310 and is suitable for being filled with liquid helium. By fixing the first support member 310 to the heat shield 100, the heat shield 100 can be used to stably support the first support member 310, reducing the difficulty of installing the first support member 310. This facilitates the first support member 310 to stably support the liquid helium pipeline 320, ensuring the stability of the liquid helium pipeline 320 and facilitating the stable delivery of liquid helium.

[0055] It should be noted that the temperature of liquid helium is 4.2K (about -268.95℃). In the specific example, combined with Figure 1 and Figure 2 As shown, there are two liquid helium pipelines 320, one of which is a liquid supply pipeline and the other is a liquid return pipeline, so as to facilitate the transportation of 4.2K liquid helium.

[0056] In some embodiments, combined Figure 2 and Figure 4 As shown, the first support member 310 is provided with a first through hole 311, and the liquid helium pipeline 320 is connected to the first support member 310 through the first through hole 311. The first through hole 311 can reduce the difficulty of connecting the first support member 310 and the liquid helium pipeline 320, facilitate the assembly of the first support member 310 and the liquid helium pipeline 320, and thus facilitate the installation of the liquid helium pipeline 320 on the first support member 310.

[0057] In some embodiments, the liquid helium delivery assembly 300 further includes a thermal insulator (not shown) disposed around the outer periphery of the liquid helium pipeline 320. The thermal insulator can insulate the liquid helium pipeline 320, thereby reducing heat transfer between the first support member 310 and the liquid helium pipeline 320 to a certain extent, thereby ensuring stable transmission of liquid helium.

[0058] In a specific example, the thermal insulation member is a thermal insulation film, which can thermally insulate the liquid helium pipeline 320 .

[0059] In some embodiments, as Figure 2 As shown, at least a portion of the outer peripheral wall of the first support member 310 is recessed in a direction away from the heat shield 100. This increases the distance between at least a portion of the first support member 310 and the heat shield 100, facilitating gas flow within the vacuum duct 200. Furthermore, it reduces the contact area between the first support member 310 and the heat shield 100, thereby minimizing heat transfer between the first support member 310 and the heat shield 100.

[0060] In some embodiments, as Figure 2 As shown, the outer peripheral walls of the first support member 310 are all recessed in a direction away from the thermal shielding member 100, so that the first support member 310 is in an "I"-shaped structure. The first support member 310 is fixedly connected to the thermal shielding member 100 only at the four corners of the "I" shape, effectively reducing the contact area between the first support member 310 and the thermal shielding member 100.

[0061] In some embodiments, at least a portion of the liquid helium pipeline 320 is formed into a flexible tube (not shown in the figures). This allows at least a portion of the liquid helium pipeline 320 to deform under external force, thereby preventing, to a certain extent, leakage of the liquid helium pipeline 320 caused by contraction and deformation at deep cryogenic temperatures, thereby preventing the outflow of liquid helium and facilitating stable transmission of liquid helium through the liquid helium pipeline 320.

[0062] In some embodiments, the liquid helium pipeline 320 includes a rigid tube and a flexible tube. The flexible tube is welded to the rigid tube so that at least a portion of the liquid helium pipeline 320 forms a flexible tube, which helps prevent the liquid helium pipeline 320 from leaking due to contraction and deformation at deep cryogenic temperatures.

[0063] In some embodiments, combined Figure 2 and Figure 5 As shown, the first helium delivery assembly 400 includes a second support member 410 and a first helium pipeline 420. The second support member 410 extends along the circumference of the vacuum pipe 200 and is fixedly connected to the heat shield 100 and the vacuum pipe 200, respectively. The first helium pipeline 420 is disposed on the second support member 410 and is suitable for being filled with the first helium gas. The fixed connection between the second support member 410, the heat shield 100, and the vacuum pipe 200 facilitates the stable support of the second support member 410 by the heat shield 100 and the vacuum pipe 200, thereby improving the positional stability of the second support member 410.

[0064] At the same time, by extending the second support member 410 along the circumference of the vacuum pipe 200 , stress concentration on the first helium pipeline 420 can also be alleviated.

[0065] In addition, the first helium gas pipeline 420 is disposed on the second support member 410 so as to utilize the second support member 410 to support the first helium gas pipeline 420 , thereby reducing the difficulty of installing the first helium gas pipeline 420 and improving the position stability of the first helium gas pipeline 420 , thereby facilitating the stable transmission of the first helium gas.

[0066] In a specific example, combined with Figure 2 and Figure 5 As shown, the second support member 410 is annular in structure as a whole. The ring fits the inner wall of the vacuum pipe 200 , which can not only fix and support the internal pipeline of the vacuum pipe 200 well, but also relieve the stress concentration of the internal pipeline of the vacuum pipe 200 .

[0067] It should be noted that the temperature of the first helium gas is 300K (about 26.85°C). Figure 1 and Figure 2 As shown, there are two first helium gas pipelines 420, one of which is a first gas supply pipeline and the other is a first gas return pipeline, so as to facilitate the transportation of 300K helium gas.

[0068] In some embodiments, combined Figure 2 and Figure 5 As shown, the second support member 410 is provided with a second through hole 413, and the first helium gas pipeline 420 is connected to the second support member 410 through the second through hole 413. The second through hole 413 can reduce the difficulty of connecting the second support member 410 and the first helium gas pipeline 420, realize the use of the second support member 410 to support the first helium gas pipeline 420, and improve the positional stability of the first helium gas pipeline 420.

[0069] In some embodiments, the first support member 310 and / or the second support member 410 are polytetrafluoroethylene members. This means that the first support member 310 is polytetrafluoroethylene, or the second support member 410 is polytetrafluoroethylene, or both the first support member 310 and the second support member 410 are polytetrafluoroethylene members.

[0070] Among them, due to the low thermal conductivity of polytetrafluoroethylene, the first support member 310 and / or the second support member 410 can, to a certain extent, hinder the heat transfer between the first gas helium delivery assembly 400 and the liquid helium delivery assembly 300, thereby reducing the impact of the heat load on the liquid helium pipeline 320; at the same time, the degassing rate of polytetrafluoroethylene is relatively low, which to a certain extent prevents the first support member 310 and / or the second support member 410 from releasing gas. Since the vacuum environment needs to be maintained inside the vacuum pipe 200, the vacuum pumping time inside the vacuum pipe 200 can be reduced.

[0071] In some embodiments, combined Figure 4 and Figure 5 As shown, the first support member 310 and / or the second support member 410 are provided with a through hole 4112, and the through hole 4112 penetrates the first support member 310 and / or the second support member 410 along the axial direction of the vacuum duct 200. Here, it means that the first support member 310 is provided with a through hole 4112, and the through hole 4112 penetrates the first support member 310 along the axial direction of the vacuum duct 200, or the second support member 410 is provided with a through hole 4112, and the through hole 4112 penetrates the second support member 410 along the axial direction of the vacuum duct 200, or both the first support member 310 and the second support member 410 are provided with a through hole 4112, and the through hole 4112 of the first support member 310 penetrates the first support member 310 along the axial direction of the vacuum duct 200, and the through hole 4112 of the second support member 410 penetrates the second support member 410 along the axial direction of the vacuum duct 200.

[0072] It should be noted that, on the one hand, the through hole 4112 can block the heat transfer on the first support member 310 and / or the second support member 410, effectively reducing the heat transfer efficiency of the first support member 310 and the second support member 410, thereby blocking the heat transfer between the first gas helium delivery assembly 400 and the liquid helium delivery assembly 300; on the other hand, the through hole 4112 can ensure that the gas in the vacuum pipe 200 can flow smoothly, thereby reducing the vacuuming time.

[0073] In some embodiments, combined Figure 2 、 Figure 4 and Figure 5 As shown, the through holes 4112 include a plurality of through holes 4112, at least some of which are spaced apart around the periphery of the liquid helium pipeline 320 and / or the first gas helium pipeline 420. It can be understood that when the first support member 310 is provided with through holes 4112, at least some of the through holes 4112 are spaced apart around the periphery of the liquid helium pipeline 320; and when the second support member 410 is provided with through holes 4112, at least some of the through holes 4112 are spaced apart around the periphery of the first gas helium pipeline 420. The through holes 4112 on the first support member 310 can, to a certain extent, hinder heat transfer between the first support member 310 and the liquid helium pipeline 320, and the through holes 4112 on the second support member 410 can, to a certain extent, hinder heat transfer between the second support member 410 and the first gas helium pipeline 420, thereby achieving the purpose of blocking heat transfer between the first gas helium delivery assembly 400 and the liquid helium delivery assembly 300, and reducing the impact of heat load on the liquid helium pipeline 320.

[0074] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0075] In some embodiments, combined Figure 2 and Figure 4 As shown, at least some of the through holes 4112 provided on the first support member 310 are located between the connection between the first support member 310 and the heat shield 100 and the liquid helium pipeline 320. This can reduce heat transfer between the heat shield 100 and the liquid helium pipeline 320, thereby reducing the impact of heat load on the liquid helium pipeline 320.

[0076] In some embodiments, combined Figure 2 and Figure 5 As shown, the second support member 410 includes a first portion 411 and a second portion 412 that are interconnected. The first portion 411 extends longer than the second portion 412 in the circumferential direction of the vacuum duct 200. The first helium gas pipeline 420 is disposed in the second portion 412. The first portion 411 is connected to the heat shield 100, while the second portion 412 is spaced apart from the heat shield 100. By configuring the second support member 410 to include the interconnected first portion 411 and the second portion 412, surface-to-surface contact is achieved between the first portion 411 and the second portion 412. Compared to a design where the first portion 411 and the second portion 412 are integrally formed, the interconnected first portion 411 and the second portion 412 increase the thermal resistance between the first portion 411 and the second portion 412, reducing heat transfer from the first helium gas pipeline 420 to the entire second support member 410. This reduces the high-temperature region within the vacuum duct 200 and helps reduce the heat load imposed on the liquid helium delivery assembly 300 by the first helium gas delivery assembly 400.

[0077] At the same time, since the first helium gas pipeline 420 is provided in the second portion 412, by setting the extension length of the first portion 411 to be greater than the extension length of the second portion 412, while allowing the second support member 410 to extend along the circumference of the vacuum pipe 200, the heat transferred by the first helium gas pipeline 420 can also be confined to a smaller area, thereby reducing the heat radiation of the first helium gas pipeline 420 to the liquid helium delivery assembly 300.

[0078] In addition, by connecting the first portion 411 to the heat shield 100 and spacing the second portion 412 from the heat shield 100, while achieving a fixed connection between the second support member 410 and the heat shield 100, it is also possible to prevent heat from the second portion 412 from being directly transferred to the heat shield 100, thereby helping to reduce the heat load of the first gas helium delivery assembly 400 on the liquid helium delivery assembly 300.

[0079] In some embodiments, combined Figure 2 and Figure 5As shown, a convex portion is provided at one end of the first part 411 facing the second part 412, and a concave portion is provided at one end of the second part 412 facing the first part 411. The convex portion is connected in the concave portion to achieve a mating connection between the first part 411 and the second part 412, and to increase the connection strength between the first part 411 and the second part 412.

[0080] In some embodiments, combined Figure 2 and Figure 5 As shown, the first portion 411 is provided with multiple groups of through-hole components 4111, which are spaced apart along the radial direction of the vacuum pipe 200. Each group of through-hole components 4111 includes multiple through-holes 4112, which are spaced apart along the circumference of the vacuum pipe 200. This allows a large number of through-holes 4112 to be provided on the first portion 411, thereby reducing the efficiency of heat transfer in the first portion 411 and facilitating heat transfer between the first gas helium delivery assembly 400 and the liquid helium delivery assembly 300.

[0081] In some embodiments, combined Figure 2 and Figure 5 As shown, in two adjacent groups of penetration components 4111, in the radial direction of the vacuum duct 200, the through-holes 4112 of one group of penetration components 4111 directly face the gap between two adjacent through-holes 4112 of the other group of penetration components 4111. This results in the through-holes 4112 of adjacent penetration components 4111 being staggered. This prevents continuous heat transfer along the first portion 411 in the radial direction of the vacuum duct 200, thereby reducing the heat transfer efficiency of the first portion 411 and, consequently, the heat transfer efficiency between the first portion 411 and the thermal shield 100.

[0082] In some embodiments, combined Figure 2 and Figure 5 As shown, the second portion 412 is provided with a plurality of through-holes 4112, at least some of which are located between the connection between the first portion 411 and the second portion 412 and the first helium gas pipeline 420. This can reduce heat transfer between the first helium gas pipeline 420 and the first portion 411, thereby confining the heat transferred by the first helium gas pipeline 420 to a smaller area, thereby reducing the impact of the first helium gas pipeline 420 on the liquid helium pipeline 320.

[0083] In some embodiments, combined Figure 1 and Figure 2As shown, the composite multi-channel multimedia pipeline 1000 for a fusion device further includes a second helium gas pipeline 500, which is used to transport a second helium gas having a lower temperature than the first helium gas. The second helium gas pipeline 500 is provided on the thermal shield 100. The provision of the second helium gas pipeline 500 allows the composite multi-channel multimedia pipeline 1000 of the present application to transport helium gas at different temperatures, thereby improving the operating performance of the composite multi-channel multimedia pipeline 1000.

[0084] At the same time, by arranging the second helium gas pipeline 500 on the heat shield 100, on the one hand, the heat shield 100 can be used to stably support the second helium gas pipeline 500, thereby reducing the difficulty of installing the second helium gas pipeline 500, improving the stability of the second helium gas pipeline 500, and ensuring the performance of the second helium gas pipeline 500; on the other hand, since the temperature of the second helium gas is lower than that of the first helium gas, when the second helium gas pipeline 500 is arranged on the heat shield 100, the second helium gas pipeline 500 can be directly used as a cold source to cool the heat shield 100, thereby reducing the temperature of the heat shield 100, ensuring the thermal shielding performance of the heat shield 100, reducing the impact of the heat load of the first helium gas delivery assembly 400 on the liquid helium pipeline 320, and ensuring the low-temperature transportation of liquid helium. At the same time, no additional cooling pipeline is required, simplifying the structure of the composite multi-channel multi-media pipeline 1000.

[0085] It should be noted that the temperature of the second helium gas is 80K (about -193.15℃). Figure 1 and Figure 2 As shown, there are two second helium gas pipelines 500 , one of which is a second gas supply pipeline and the other is a second gas return pipeline, so as to facilitate the transportation of 80K helium gas.

[0086] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, at least a portion of the heat shield 100 is bent to form a fixing groove 120, and the second helium gas pipeline 500 is disposed in the fixing groove 120. The fixing groove 120 can reduce the difficulty of connecting the second helium gas pipeline 500 and the heat shield 100, and can also increase the contact area between the second helium gas pipeline 500 and the heat shield 100, thereby ensuring that the heat shield 100 firmly supports the second helium gas pipeline 500.

[0087] In some embodiments, the second helium gas pipeline 500 is inserted into and welded to the fixing groove 120 , which can enhance the connection strength between the second helium gas pipeline 500 and the fixing groove 120 and ensure the stability of the second helium gas pipeline 500 .

[0088] In a specific example, the low-temperature system application end of the fusion device has multiple core cryogenic pumps. During the entire operation of the cryogenic pump, 300K gas helium is required for the cryogenic pump regeneration process, and 80K gas helium and 4.2K liquid helium are required for the cooling process of the cryogenic pump. Among them, 80K helium is used to cool the radiation-proof cold screen and baffle inside the cryogenic pump, and 4.2K liquid helium is used to cool the adsorption plate inside the cryogenic pump. Based on this, the present application sets up a composite multi-channel multi-media pipeline 1000 that can simultaneously transport 300K gas helium, 80K gas helium and 4.2K liquid helium to meet the low-temperature requirements of the low-temperature system application end of the fusion device.

[0089] In some embodiments, the vacuum pipe 200, the liquid helium pipe 320, the first helium gas pipe 420, and / or the second helium gas pipe 500 are stainless steel pipes. When the vacuum pipe 200 is a stainless steel pipe, it provides a certain structural strength to facilitate accommodating and supporting components within the composite multi-channel, multimedia pipeline 1000 (e.g., the first helium gas pipe 420 and the first support member 310), while also providing vacuum insulation. When the liquid helium pipe 320 is a stainless steel pipe, it provides a certain structural strength to facilitate the stable transmission of liquid helium. When the first helium gas pipe 420 is a stainless steel pipe, it provides a certain structural strength to facilitate the stable transmission of the first helium gas. When the second helium gas pipe 500 is a stainless steel pipe, it provides a certain structural strength to facilitate the stable transmission of the second helium gas.

[0090] In a specific example, the vacuum pipe 200 , the liquid helium pipeline 320 , the first helium gas pipeline 420 , and the second helium gas pipeline 500 are all made of 304 stainless steel.

[0091] In some embodiments, combined Figure 1 、 Figure 2 and Figure 6 As shown, the liquid helium pipeline 320, the first helium gas pipeline 420 and the second helium gas pipeline 500 are arranged in the same direction. This arrangement can avoid interference between the liquid helium pipeline 320, the first helium gas pipeline 420 and the second helium gas pipeline 500 and pipelines in other directions.

[0092] In a specific example, combined with Figure 1 、 Figure 2 and Figure 6 As shown, the liquid helium pipeline 320, the first helium gas pipeline 420, and the second helium gas pipeline 500 are arranged at a 45° angle from the upper left to the lower right during installation, so as to avoid interference between the liquid helium pipeline 320, the first helium gas pipeline 420, and the second helium gas pipeline 500 and the pipelines in the horizontal and vertical directions, thereby reducing the difficulty of assembling the composite multi-channel multi-media pipeline 1000.

[0093] It should be noted that, for the sake of convenience in description and a more intuitive understanding of the positional state of the composite multi-channel multi-media pipeline 1000, the liquid helium pipeline 320, the first helium gas pipeline 420, and the second helium gas pipeline 500 are described as being arranged at an angle of 45 degrees from the upper left to the lower right when installed. The “upper left” and “lower right” are only used for reference. Figure 2 The up, down, left, and right positions in the figure are consistent, and this orientation expression has nothing to do with the actual installation position of the composite multi-channel multi-media pipeline 1000.

[0094] In some examples, a composite multi-channel multi-media pipeline 1000 for a fusion device has a total of seven parallel pipelines, including a vacuum pipeline 200, two liquid helium pipelines 320, two first gas helium pipelines 420, and two second gas helium pipelines 500. The vacuum pipeline 200 is located at the outermost layer, and the vacuum pipeline 200 can accommodate and support the remaining six pipelines.

[0095] During the specific assembly process of the composite multi-channel multi-media pipeline 1000, the two liquid helium pipelines 320 can be firstly wrapped with a heat insulating member and then installed in the first through hole 311 on the first support member 310 to form the liquid helium delivery assembly 300. Subsequently, the liquid helium delivery assembly 300 is installed in the heat shield 100, and the second helium pipeline 500 is inserted into the fixing groove 120 of the heat shield 100. The heat shield 100 that has been installed is welded to the second helium pipeline 500. Finally, the first helium pipeline 420 is inserted into the second through hole 311 on the second support member 410. The first helium delivery assembly 400 is formed in the hole 413. Finally, the heat shield 100, the liquid helium delivery assembly 300, and the first helium delivery assembly 400 are inserted into the outermost vacuum pipe 200. The second support member 410 is fixedly connected to the vacuum pipe 200. The internal liquid helium pipeline 320, the first helium pipeline 420, and the second helium pipeline 500 are adjusted so that the first helium pipeline 420, the second helium pipeline 500, and the liquid helium pipeline 320 are installed and arranged in sequence from the upper left to the lower right at a 45° angle, completing the assembly of the composite multi-channel multi-media pipeline 1000.

[0096] It should be noted that if Figure 6 As shown, the composite multi-channel multi-media pipeline 1000 of the present application can also be formed into a three-way structure to facilitate the transmission of media.

[0097] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0098] Figure 5 The figure shows that three through holes 4112 are provided on a single second part 412 for illustrative purposes, but after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to the technical solution of two, four or more through holes 4112, which also falls within the scope of protection of the present invention.

[0099] Other components of the composite multi-channel multimedia pipeline 1000 for a fusion device according to an embodiment of the present invention, such as the specific structure of the vacuum pipe 200 , are well known to those skilled in the art and will not be described in detail here.

[0100] Throughout this specification, reference to terms such as "embodiment" or "example" indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0101] While 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A composite multi-channel multi-media pipeline for a fusion device, characterized in that: include: A heat shielding member (100), wherein the heat shielding member (100) is hollow inside to form a first accommodation space (110); a vacuum pipe (200), the vacuum pipe (200) being sleeved on the outer periphery of the heat shielding member (100) and spaced apart from the heat shielding member (100), a second accommodation space (210) being formed between the heat shielding member (100) and the vacuum pipe (200), the heat shielding member (100) being used to shield heat transfer between the first accommodation space (110) and the second accommodation space (210); a liquid helium delivery assembly (300), the liquid helium delivery assembly (300) being used for delivering liquid helium, the liquid helium delivery assembly (300) being arranged in the first accommodating space (110) and fixedly connected to the heat shielding component (100); A first helium gas delivery component (400) is used to deliver first helium gas, and the first helium gas delivery component (400) is arranged in the second accommodating space (210) and is fixedly connected to the heat shielding component (100) and the vacuum pipe (200), respectively.

2. The composite multi-channel multi-media pipeline for a fusion device according to claim 1, characterized in that: The heat shield (100) comprises a heat conducting member, a protective member and an absorbing member, wherein the protective member is arranged on the periphery of the heat conducting member and is used to protect the heat conducting member, and the absorbing member is arranged on the periphery of the protective member and is located on a side of the heat shield (100) facing the first accommodating space (110), and is used to absorb heat transferred to the heat shield (100).

3. The composite multi-channel multi-media pipeline for a fusion device according to claim 2, characterized in that: The heat conducting member is a copper member, the outer periphery of the copper member is provided with a nickel layer to form the protective member, and the outer surface of the protective member facing the first accommodating space (110) is provided with black paint to form the absorption member.

4. The composite multi-channel multi-media pipeline for a fusion device according to claim 1, characterized in that: The liquid helium delivery assembly (300) comprises a first support member (310) and a liquid helium pipeline (320), wherein the first support member (310) is fixedly connected to the heat shield member (100), and the liquid helium pipeline (320) is provided on the first support member (310), and the liquid helium pipeline (320) is suitable for being filled with liquid helium.

5. The composite multi-channel multi-media pipeline for a fusion device according to claim 4, characterized in that: The liquid helium delivery assembly (300) further comprises a heat insulating member, which is sleeved on the outer circumference of the liquid helium pipeline (320).

6. The composite multi-channel multi-media pipeline for a fusion device according to claim 4, characterized in that: At least part of the outer peripheral wall of the first support member (310) is recessed in a direction away from the heat shielding member (100).

7. The composite multi-channel multi-media pipeline for a fusion device according to claim 4, characterized in that: At least a portion of the liquid helium line (320) forms a flexible tube.

8. The composite multi-channel multi-media pipeline for a fusion device according to claim 4, characterized in that: The first helium gas delivery assembly (400) comprises a second support member (410) and a first helium gas pipeline (420), wherein the second support member (410) extends along the circumference of the vacuum pipeline (200), and the second support member (410) is fixedly connected to the heat shielding member (100) and the vacuum pipeline (200), respectively; the first helium gas pipeline (420) is provided on the second support member (410), and the first helium gas pipeline (420) is suitable for being filled with the first helium gas.

9. The composite multi-channel multi-media pipeline for a fusion device according to claim 8, characterized in that: The first support member (310) and / or the second support member (410) is a polytetrafluoroethylene member; And / or, the first support member (310) and / or the second support member (410) is provided with a through hole (4112), and the through hole (4112) penetrates the first support member (310) and / or the second support member (410) along the axial direction of the vacuum pipe (200).

10. The composite multi-channel multi-media pipeline for a fusion device according to claim 9, characterized in that: The through holes (4112) include a plurality of through holes, and at least some of the through holes (4112) are arranged at intervals around the periphery of the liquid helium pipeline (320) and / or the first gas helium pipeline (420); At least part of the through-holes (4112) provided on the first support member (310) is located between the connection between the first support member (310) and the heat shielding member (100) and the liquid helium pipeline (320).

11. The composite multi-channel multimedia pipeline for a fusion device according to claim 8, characterized in that: The second support member (410) includes a first portion (411) and a second portion (412) connected to each other. In the circumferential direction of the vacuum pipe (200), the extension length of the first portion (411) is greater than the extension length of the second portion (412). The first helium pipeline (420) is provided in the second portion (412). The first portion (411) is connected to the heat shielding member (100), and the second portion (412) is spaced apart from the heat shielding member (100).

12. The composite multi-channel multimedia pipeline for a fusion device according to claim 11, characterized in that: The first portion (411) is provided with a plurality of groups of penetration components (4111), the plurality of groups of penetration components (4111) are arranged at intervals along the radial direction of the vacuum pipe (200), each group of the penetration components (4111) comprises a plurality of penetration holes (4112), and the plurality of penetration holes (4112) are arranged at intervals along the circumference of the vacuum pipe (200); In two adjacent groups of the through-hole components (4111), in the radial direction of the vacuum pipe (200), the through-holes (4112) of one group of the through-hole components (4111) face the gap between two adjacent through-holes (4112) of the other group of the through-hole components (4111); The second part (412) is provided with a plurality of through holes (4112), and at least some of the through holes (4112) are located between the connection between the first part (411) and the second part (412) and the first helium pipeline (420).

13. The composite multi-channel multi-media pipeline for a fusion device according to claim 8, characterized in that: It also includes a second helium gas pipeline (500), the second helium gas pipeline (500) is used to transport second helium gas, the temperature of the second helium gas is lower than the temperature of the first helium gas, and the second helium gas pipeline (500) is provided on the heat shield (100).

14. The composite multi-channel multimedia pipeline for a fusion device according to claim 13, characterized in that: At least a portion of the heat shield (100) is bent to form a fixing groove (120), and the second helium pipeline (500) is arranged in the fixing groove (120).

15. The composite multi-channel multimedia pipeline for a fusion device according to claim 13, characterized in that: The vacuum pipe (200), the liquid helium pipeline (320), the first helium gas pipeline (420) and / or the second helium gas pipeline (500) are stainless steel pipes; And / or, the liquid helium pipeline (320), the first gas helium pipeline (420), and the second gas helium pipeline (500) are arranged in the same direction.

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