A support assembly for a cryogenic multi-fluid delivery device

Abstract

The application discloses a support assembly of a low-temperature multi-fluid conveying device, characterized by comprising a strong sliding support cylinder, a plurality of waist holes are formed in the strong sliding support cylinder to prolong a heat transfer path of a cold screen assembly; one end of the strong sliding support assembly is welded and fixed with an outer pipe of the multi-fluid conveying device, and the other end is fixedly connected with a multi-pipe assembly through a connecting assembly; the strong sliding support cylinder is used for resisting a thrust generated by a connecting bellows, and the connecting assembly is used for reducing solid conduction heat leakage. In the application, the strong fixed support assembly can be used for resisting the thrust generated by the connecting bellows, the waist holes formed in the cylinder body are used for prolonging the heat transfer path of the cold screen assembly, and the thrust generated by the telescopic bellows can abut the strong sliding support assembly and the multi-pipe assembly, so that compared with conventional welding connection, the heat leakage is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-temperature pipeline, more particularly to a support assembly of a low-temperature multi-fluid conveying device. BACKGROUND

[0002] As the most important component of superconducting particle accelerator devices, the cryostat provides liquid helium and mechanical support for superconducting cavities, superconducting magnets, etc., realizes and maintains the temperature and pressure environment required for the normal operation of superconducting elements, and forms a thermal shield and thermal isolation to reduce the overall thermal load of the system. Its performance will directly determine the investment and operating cost of the entire accelerator cryogenic system.

[0003] The coolant in the cold screen on the thermostat is input from the outside through the pipeline, but the existing pipeline has a large diameter and a large number of channels with a push tube, which can obtain good strength through fixed support, but generally high strength will cause large heat leakage. How to reduce heat leakage on the basis of multi-channel pipeline strength has become a technical problem to be solved.

[0004] The patent document with the patent announcement number CN113217718A discloses a new multi-channel low-temperature transmission pipeline, which comprises a cold screen cylinder, a first convex strip, a positioning assembly, and a second convex strip. A plurality of first convex strips and second convex strips are fixed on the cylinder body of the cold screen cylinder and are arranged circumferentially along the central axis of the cold screen cylinder. The length direction of the first convex strip and the second convex strip is parallel to the central axis of the cold screen cylinder. The outer edge line of the first convex strip and the second convex strip extends towards the outside of the cold screen cylinder. Its advantages are that the mechanical strength of the cold screen cylinder is greatly increased in the form of local protrusions, the thickness of the cold screen cylinder is effectively reduced, the lightweight of the cold screen cylinder is realized under the premise of meeting the mechanical strength, the cost of materials is reduced, and the production rate is improved.

[0005] However, it cannot meet the cold shrinkage sliding and simultaneously reduce the heat leakage of the cold screen transmission. SUMMARY

[0006] The technical problem to be solved by the present application is how to provide a support assembly that can meet the strength of a low-temperature multi-fluid conveying device and reduce heat leakage.

[0007] The present application solves the above technical problems by the following technical means: a support assembly of a low-temperature multi-fluid conveying device, characterized in that it comprises a strong sliding support cylinder, a plurality of waist holes are formed in the strong sliding support cylinder to lengthen the heat transfer path of the cold screen assembly, one end of the strong sliding support assembly is welded and fixed with the outer pipe of the multi-fluid conveying device, the other end is fixedly connected with the multi-pipe assembly through a connecting assembly, the strong sliding support cylinder is used to resist the thrust generated by the connecting bellows, and the connecting assembly is used to reduce solid conduction heat leakage.

[0008] The strong fixed support assembly can be used to resist the thrust generated by the connecting corrugated pipe, and the waist hole formed in the cylinder of the strong fixed support assembly can prolong the heat transfer path of the cold shield assembly, and the thrust generated by the telescopic corrugated pipe can abut the strong sliding support assembly and the multi-pipe assembly, thereby reducing the heat leakage compared with the conventional welding connection.

[0009] As a preferred technical solution, the connecting assembly comprises a left flange, a middle flange, a right flange, and a G10 support plate, the left flange is fixedly connected to one end of the middle flange through the G10 support plate, the other end of the middle flange is fixedly connected to the right flange through the G10 support plate, the middle flange is fixedly connected to the cold shield of the multi-fluid conveying device, and the multi-pipe assembly passes through the connecting assembly and is connected and fastened thereto.

[0010] As a preferred technical solution, the multi-pipe assembly comprises a first main pipe, a second main pipe, a first branch pipe, a second branch pipe, and a third branch pipe, the second main pipe, the first branch pipe, the second branch pipe, and the third branch pipe are all arranged outside the first main pipe in a ring shape, and are all arranged in parallel and with a gap, and the first main pipe and the second main pipe are respectively air inlet and air outlet pipelines.

[0011] As a preferred technical solution, the strong fixed support assembly further comprises a strong fixed support inner sleeve, the right flange is fixedly connected to the strong fixed support inner sleeve which is adapted to the first main pipe, the second main pipe, the first branch pipe, and the second branch pipe, and is welded to the first main pipe, the second main pipe, the first branch pipe, and the second branch pipe, respectively, and the strong sliding support cylinder is fixedly connected to the left flange.

[0012] As a preferred technical solution, the right flange is fixedly connected to a copper hoop at the end, the copper hoop is sleeved outside the third branch pipe, the right flange is welded to the first main pipe, the second main pipe, the first branch pipe, and the second branch pipe through the strong fixed support inner sleeve, and the copper hoop is sleeved outside the third branch pipe, so that the cold quantity on the third branch pipe can be transmitted to the right flange through the copper hoop, the cold quantity transmission is enhanced, and the solid heat leakage of other strong fixed support inner sleeves can be further reduced.

[0013] As a preferred technical solution, one end of the strong fixed support inner sleeve is welded to the left flange, and the other end is fixedly connected to a left end flange, a first main pipe flange is fixedly connected to the outside of the first main pipe, and the left end flange is connected and fastened to the first main pipe flange through a G10 support ring.

[0014] As a preferred technical solution, one end of the middle flange is welded to the cold shield assembly through an extension support ring, and the extension support ring is sleeved outside the right flange.

[0015] The advantages of the present application are as follows:

[0016] (1) In the present application, the strong fixed support assembly can be used to resist the thrust generated by the connecting corrugated pipe, and at the same time, the waist hole is opened on the cylinder to prolong the heat transfer path of the cold screen assembly, and the thrust generated by the telescopic corrugated pipe can abut the strong sliding support assembly and the multi-pipe assembly, which reduces the heat leakage compared with the conventional welding connection.

[0017] (2) In the present application, the right flange is welded and fixed with the first main pipe, the second main pipe, the first branch pipe and the second branch pipe through the strong fixed support inner sleeve, and the copper hoop is sleeved outside the third branch pipe, so that the cold quantity on the third branch pipe can be transmitted to the right flange through the copper hoop to enhance the cold quantity transmission and further reduce the solid heat leakage of the other strong fixed support inner sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0019] Figure 2 The outer pipe structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0020] Figure 3 The C-C local enlarged structure structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided. Figure 2

[0021] Figure 4 The bend pipe section structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0022] Figure 5 The cold screen gas return pipe structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0023] Figure 6 The extension support ring structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0024] Figure 7 The strong fixed support assembly structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0025] Figure 8 The pipe sliding support assembly structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0026] Figure 9 The main pipe inner pipe structure schematic diagram of the support assembly of the low-temperature multi-fluid conveying device provided by the embodiment of the present application is provided.

[0027] Figure 10 ​A schematic diagram of the inner pipe structure of the branch pipe of a support component of a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0028] Figure 11 A schematic diagram of a strong fixed support component structure for a support assembly of a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0029] Figure 12 A schematic diagram of the bent pipe connection structure of a support component of a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0030] Figure 13 A support assembly for a cryogenic multi-fluid transport device provided in an embodiment of the present invention. Figure 12 A magnified schematic diagram of the DD local structure;

[0031] Figure 14 A schematic diagram of the comb groove structure of a support component for a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0032] Figure 15 This is a schematic diagram of the first cold shield cylinder structure of a support component of a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0033] Figure 16 A schematic diagram of the connecting bellows structure of a support component for a cryogenic multi-fluid conveying device provided in an embodiment of the present invention;

[0034] Reference numerals: 17. Comb groove; 171. Cold screen return air pipe mounting groove; 172. Slot; 19. Outer pipe; 20. Cold screen assembly; 2001. First cold screen cylinder; 2002. Second universal ball joint; 2003. Second cold screen cylinder; 2004. Cold screen return air pipe; 21. Pipeline sliding support assembly; 2101. First support plate; 2102. Second support plate; 2103. Third support plate; 2104. First universal ball joint; 2105. Main pipe mounting ring; 2106. Branch pipe mounting ring; 2107. Main pipe inner pipe; 2108. Branch pipe inner pipe; 2109. Support connecting rod; 2110. Fixed support block; 22. Strong fixed support assembly; 2201. Strong fixed support cylinder; 2202. Left flange; 2203. Middle flange; 2204. Right flange; 2205. G10 support plate; 2206. Extended support ring; 2207. Strong fixed support inner sleeve; 2208. G10 support ring; 2209. Left end flange; 2210. First main pipe flange; 2211. Copper hoop; 23. Multi-pipe assembly; 2301. First main pipe; 2302. Second main pipe; 2303. First branch pipe; 2304. Second branch pipe; 2305. Third branch pipe; 24. Connecting bellows; 2401. Guide sleeve; 25. Bend connecting pipe. Detailed Implementation

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only some 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 of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0036] Referring to Figures 1-6 A support assembly of a low-temperature multi-fluid conveying device with a support assembly, comprising a multi-fluid conveying device connecting pipeline, the multi-fluid conveying device comprising a plurality of sequentially connected elbow sections, the central pipes of adjacent elbow sections being welded and fixed through connecting bellows 24, a single elbow section comprising an outer pipe 19, a cold screen assembly 20, a pipeline sliding support assembly 21, a strong fixed support assembly 22, a multi-pipe assembly 23, the multi-pipe assembly 23 comprising a plurality of pipelines, the pipelines being L-shaped, the multi-pipe assembly 23 being provided with the pipeline sliding support assembly 21 and the strong fixed support assembly 22, a single elbow section comprising a vertically fixed first straight pipe section and a second straight pipe section, the first straight pipe section being longer than the second straight pipe section, the first straight pipe section being provided with two pipeline sliding support assemblies 21 and one strong fixed support assembly 22, and the second straight pipe section being provided with one pipeline sliding support assembly 21 and one strong fixed support assembly 22.

[0037] Referring to Figure 5 The pipeline sliding support assembly 21 is provided with a fixed part and a sliding part, the fixed part being fixedly connected with one pipeline, and the sliding part being slidingly matched with the remaining pipelines, the strong fixed support assembly 22 being fixedly connected with the cold screen assembly 20, the cold screen assembly 20 being wrapped outside the multi-pipe assembly 23, the pipeline sliding support assembly 21 being fixed to the inner wall of the cold screen assembly 20 through a plurality of first universal balls 2104, the outer pipe 19 being sleeved outside the cold screen assembly 20, a plurality of second universal balls 2002 being circumferentially arranged on the cold screen assembly 20 and fixed to the inner wall of the outer pipe 19.

[0038] Referring to Figure 6 , Figure 7 The plurality of pipelines comprise a main pipe and branch pipes, wherein the main pipe is an inlet and outlet pipe, and comprises a first main pipe 2301 and a second main pipe 2302, the first main pipe 2301 being larger in diameter than the second main pipe 2302, and the branch pipes comprising a first branch pipe 2303, a second branch pipe 2304 and a third branch pipe 2305, the first branch pipe 2303, the second main pipe 2302, the second branch pipe 2304 and the third branch pipe 2305 being annularly arranged in sequence outside the circumferential side of the first branch pipe 2303.

[0039] Referring to Figure 8 , Figure 9 , Figure 10, the pipeline sliding support assembly 21 comprises a first support plate 2101, a second support plate 2102, a third support plate 2103, a first universal ball 2104, a main pipe mounting ring 2105, a branch pipe mounting ring 2106, a main pipe inner pipe 2107, a branch pipe inner pipe 2108, a support connecting rod 2109, a fixed support block 2110, the first support plate 2101, the second support plate 2102 and the third support plate 2103 are coaxially and linearly distributed, and are annular structures with a through hole in the center adapted to the first main pipe 2301, the first support plate 2101, the second support plate 2102 and the third support plate 2103 are connected and fixed by the support connecting rod 2109, the support connecting rod 2109 passes through the first support plate 2101, the second support plate 2102 and the third support plate 2103 respectively and is connected and fastened with the first support plate 2101, the second support plate 2102 and the third support plate 2103 by bolts, the first support plate 2101 and the third support plate 2103 are respectively fixedly connected with the main pipe mounting ring 2105 adapted to the second main pipe 2302, the second support plate 2102 is provided with an installation groove for installing the second main pipe 2302, and the second support plate 2102 is fixedly connected with the branch pipe mounting ring 2106 for installing three branch pipes, wherein one branch pipe mounting ring 2106 is located on the left side of the installation groove, and the other two branch pipe mounting rings 2106 are located on the right side of the installation groove;

[0040] Referring to Figure 8 The through hole of the first support plate 2101 is fixedly connected with the main pipe inner pipe 2107 by three fixed support blocks 2110, and the three fixed support blocks 2110 are welded with the main pipe inner pipe 2107, so that the whole pipeline sliding support assembly 21 can be prevented from rotating, and the relative coordinate positions of the pipelines are ensured, the main pipe inner pipe 2107 is welded and fixed with the first main pipe 2301, the second main pipe 2302 is in sliding fit with the main pipe mounting ring 2105 and the installation groove, the three branch pipe inner pipes 2108 are fixedly connected with the three branch pipe mounting rings 2106 of the second support plate 2102, the first branch pipe 2303, the second branch pipe 2304 and the third branch pipe 2305 are in sliding fit with the branch pipe inner pipe 2108 respectively, and the second support plate 2102 is in abutment with the first cold screen cylinder 2001 through the four first universal balls 2104.

[0041] It should be noted that the first main pipe 2301 and the second main pipe 2302 are inlet and outlet pipes, the heat leakage of which is particularly critical, and the temperature is the lowest. The heat leakage of the two pipes is considered together, the welding and fixing of the first main pipe 2301 is realized on the first supporting plate 2101 and the third supporting plate 2103 through the main pipe inner pipe 2107, and the second supporting plate 2102 is not in contact with the main pipe inner pipe 2107, that is, no heat leakage is generated. The first supporting plate 2101 and the third supporting plate 2103 realize the sliding support of the second main pipe 2302 through the main pipe mounting ring 2105, without increasing the sleeve. Since there is heat leakage at the connection point of the sliding support of the pipeline, the second main pipe 2302 is not sleeved, so that the heat leakage of the second main pipe 2302 is slightly larger, but the heat leakage of the large-diameter first main pipe 2301 is reduced, and the total heat leakage of the first main pipe 2301 and the second main pipe 2302 is smaller. In this way, the heat leakage of the multi-pipe assembly 23 is reduced. Since the cooling of different pipelines has a sequence and the final temperature is different, the sequence and amount of cold shrink sliding are different. Therefore, the first main pipe 2301 is fixed, and the second main pipe 2302, the first branch pipe 2303, the second branch pipe 2304, and the third branch pipe 2305 are slidingly connected. The third branch pipe 2305 is the cold screen 35k inlet pipeline and the cold screen return pipeline 2004 to form a loop. The first main pipe 2301 is the outlet pipe, and the second main pipe 2302 is the inlet pipe.

[0042] Referring to Figure 11 , the strong fixed support assembly 22 not only can resist the thrust generated by the high pressure inside the connecting bellows 24, but also can prolong the heat transfer path, increase the heat transfer distance, and reduce the heat leakage of solid conduction, thereby reducing the heat leakage of the first cold screen cylinder 2001. The strong fixed support assembly 22 includes a strong fixed support cylinder 2201, a left flange 2202, a middle flange 2203, a right flange 2204, a G10 supporting plate 2205, and an extension supporting ring 2206. The left end of the strong fixed support cylinder 2201 is welded and fixed with the outer pipe 19. The strong fixed support cylinder 2201 is a barrel-shaped structure with a center through hole. A plurality of waist holes are formed in the circumferential direction of the strong fixed support cylinder 2201. The heat transfer distance is prolonged through the plurality of waist holes. The connecting assembly includes three linearly distributed flanges and the G10 supporting plate 2205, which are the left flange 2202, the middle flange 2203, and the right flange 2204. One end of the left flange 2202 is fixedly connected with the right end of the strong fixed support cylinder 2201. The left flange 2202, the middle flange 2203, and the right flange 2204 are all welded and fixed through the G10 supporting plate 2205. The left end of the middle flange 2203 is welded and fixed with the second cold screen cylinder 2003. The right end of the middle flange 2203 is welded and fixed with the first cold screen cylinder 2001 through the extension supporting ring 2206. Among them, the middle flange 2203 is made of aluminum, and the left flange 2202 and the right flange 2204 are made of stainless steel.

[0043] It should be noted that the G10 support plate 2205 has poor heat conduction, since the middle flange 2203 is welded and fixed with the cold shield assembly 20, it is basically consistent with the temperature of the cold shield assembly 20, since the right flange 2204 is welded and fixed with the first main pipe 2301, due to the low temperature influence of the inner pipe, the right flange 2204 will be lower than the temperature of the cold shield assembly 20, and the left flange 2202 will be higher than the temperature of the cold shield assembly 20, if the three flanges are combined into one total flange, the temperature difference from the inner pipe to the total flange will be large, and the temperature difference from the room temperature end to the flange will also be large, if the temperature difference is larger, then the heat leakage will be larger, the first cold shield cylinder body 2001 is welded and fixed with the middle flange 2203 through the extension support ring 2206, which can form a package for the right flange 2204, thereby reducing the heat leakage.

[0044] Referring to Figure 12 , Figure 13 , the left end of the strong fixed support inner sleeve 2207 is abuttingly connected with the strong fixed support inner sleeve 2207 through the G10 support ring 2208, the left end of the strong fixed support inner sleeve 2207 is fixedly connected with the left end flange 2209, the first main pipe 2301 is fixedly connected with the first main pipe flange 2210, the first main pipe flange 2210 is fixedly connected with the left end flange 2209 through the G10 support ring 2208, since the G10 support ring 2208 is concentric with the strong fixed support inner sleeve 2207 and the first main pipe 2301, the thrust of the connecting bellows 24 is towards the strong fixed support left end, therefore the first main pipe flange 2210 is extruded and fixed with the left end flange 2209 through the G10 support ring 2208, this contact has poor heat conduction effect than welding, thus reducing the heat leakage.

[0045] Referring to Figure 11 , the first main pipe 2301 is abuttingly connected with the strong fixed support inner sleeve 2207, the second main pipe 2302, the first branch pipe 2303 and the second branch pipe 2304 are respectively abuttingly connected with the right flange 2204 through the strong fixed support inner sleeve 2207, the abuttingly connected structure is the same as described above, and thus will not be described again, the third branch pipe 2305 is welded and fixed with the right flange 2204, the right flange 2204 is fixedly connected with the copper hoop 2211 at the end surface, the copper hoop 2211 is sleeved outside the third branch pipe 2305, the third branch pipe 2305 has a lower inlet temperature, and a little cold energy can be taken from this pipe through the copper hoop 2211 to cool the right flange 2204, which can further reduce the solid heat leakage of the other strong fixed support inner sleeves 2207.

[0046] Referring to Figure 5 , Figure 14 , Figure 15The cold screen assembly 20 comprises a first cold screen cylinder 2001, a second universal ball 2002, a second cold screen cylinder 2003, and a cold screen return air pipeline 2004. The first cold screen cylinder 2001 and the second cold screen cylinder 2003 are both provided with comb tooth grooves 17. The comb tooth grooves 17 can not only reduce stress deformation in the welding process, but also compensate for the cold contraction of the cold screen assembly 20 at low temperature. The comb tooth groove 17 comprises a cold screen return air pipeline mounting groove 171 and a strip hole 172. The cold screen return air pipeline mounting groove 171 is suitable in size for the cold screen return air pipeline 2004. A plurality of comb tooth grooves 17 are connected to form a long and narrow notch to cooperate with the mounting of the cold screen return air pipeline 2004. The cold screen return air pipeline 2004 is welded and fixed in the notch. The first cold screen cylinder 2001 and the second cold screen cylinder 2003 are circumferentially fixedly connected with four second universal balls 2002, and abut against the inner wall of the outer pipe 19 through the second universal balls 2002. The first cold screen cylinder 2001 is welded and fixed with the right end of the strong fixed support cylinder 2201. The second cold screen cylinder 2003 is welded and fixed with the middle flange 2203.

[0047] Referring to Figure 12 、 Figure 16 Both ends of the connecting corrugated pipe 24 are fixedly connected with guide sleeves 2401. The two guide sleeves 2401 are welded and fixed with the two first branch pipes 2303 connected thereto, respectively. The outer pipe 19 is made of stainless steel. The connecting corrugated pipe 24 is externally sleeved with a connecting section cold screen. The connecting section cold screen is externally sleeved with an elbow connecting pipe 25. The elbow connecting pipe 25 is a stainless steel pipe. The elbow connecting pipe 25 is welded and fixed with the outer pipe 19. The connecting section cold screen is fixedly connected with the first cold screen cylinder 2001.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A support assembly for a cryogenic multi-fluid conveying device, characterized in that, The system includes a strong fixed support assembly, which comprises a strong fixed support cylinder with multiple waist holes to extend the heat transfer path of the cold shield assembly. One end of the strong fixed support assembly is welded and fixed to the outer pipe of the multi-fluid conveying device, and the other end is press-fitted to the multi-pipe assembly through a connecting assembly. The strong fixed support cylinder is used to resist the thrust generated by the connecting bellows, and the connecting assembly is used to reduce solid conduction heat leakage. The connecting assembly includes a left flange, a middle flange, a right flange, and a G10 support plate. The left flange is fixedly connected to one end of the middle flange through the G10 support plate, and the other end of the middle flange is fixedly connected to the right flange through the G10 support plate. The middle flange is fixedly connected to the cold shield of the multi-fluid conveying device, and the multi-pipe assembly passes through the right flange. One end of the middle flange is welded and fixed to the cold shield assembly through an extended support ring, which is placed on the outside of the right flange.

2. The support assembly of a cryogenic multi-fluid conveying device according to claim 1, characterized in that, The multi-pipe assembly includes a first main pipe, a second main pipe, a first branch pipe, a second branch pipe, and a third branch pipe. The second main pipe, the first branch pipe, the second branch pipe, and the third branch pipe are all arranged around the outside of the first main pipe, and they are all arranged in parallel with gaps. The first main pipe and the second main pipe are the air inlet and air outlet pipes, respectively.

3. The support assembly of a cryogenic multi-fluid conveying device according to claim 2, characterized in that, The strong fixed support assembly also includes a strong fixed support inner sleeve. The right flange is fixedly connected to a strong fixed support inner sleeve that is adapted to the first main pipe, the second main pipe, the first branch pipe, and the second branch pipe, and respectively presses against the first main pipe, the second main pipe, the first branch pipe, and the second branch pipe. The strong fixed support cylinder is fixedly connected to the left flange.

4. The support assembly of a cryogenic multi-fluid conveying device according to claim 2, characterized in that, A copper hoop is fixedly connected to the end of the right flange, and the copper hoop is sleeved on the outside of the third branch pipe.

5. The support assembly of a cryogenic multi-fluid conveying device according to claim 3, characterized in that, One end of the strong fixed support inner sleeve is welded and fixed to the left flange, and the other end is fixedly connected to the left end flange. The first main pipe is fixedly connected to the outside of the first main pipe flange. The left end flange is connected and fastened to the first main pipe flange through a G10 support ring.

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