Low-temperature transmission pipeline system

Abstract

The utility model provides a low-temperature transmission pipeline system. The low-temperature transmission pipeline system comprises an outer pipe, an inner pipe, an outer corrugated pipe, an inner corrugated pipe, a heat insulation material and a supporting piece. Wherein the outer pipe is used for sleeving the inner pipe; the outer corrugated pipe is used for being connected with an outer pipe; the inner corrugated pipe is used for being connected with an inner pipe. The outer corrugated pipe is used for sleeving the inner corrugated pipe; the heat insulation material is at least located between the outer corrugated pipe and the inner corrugated pipe and wraps the inner corrugated pipe. The supporting piece is used for being arranged between the outer corrugated pipe and the inner corrugated pipe, and the distance between the end face, facing the outer corrugated pipe, of the supporting piece and the outer corrugated pipe is smaller than the distance between the heat insulation material and the outer corrugated pipe. According to the technical scheme, the low-temperature transmission pipeline system can be finely adjusted on site, movement of site equipment is reduced, and the installation efficiency is improved; meanwhile, the cooling capacity loss of a low-temperature medium in the low-temperature transmission pipeline system in the conveying process is reduced, and the conveying efficiency and the energy utilization rate of the low-temperature transmission pipeline system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-temperature refrigeration, in particular to a low-temperature transmission pipeline system. BACKGROUND

[0002] The horizontal pipeline size of the existing low-temperature transmission pipeline system is fixed, and the inner pipe is a hard pipe. When installing the low-temperature transmission pipeline, if there is a deviation on site, the pipeline can only be inserted into two devices by moving the equipment, and it is difficult to move large equipment and the efficiency is low. When there are multiple low-temperature transmission pipeline systems on the equipment, the equipment position is fixed, the low-temperature transmission pipeline has no displacement compensation and installation deviation capacity, the equipment position on site needs to be accurate to the mm level for installation, and the equipment cannot be rotated after one low-temperature transmission pipeline is installed. It is difficult to control the deviation of the angle direction of other low-temperature transmission pipelines. In addition, the procurement cycle of the corrugated pipe is long, the original low-temperature transmission pipeline can only be produced from one end, and cannot be produced from both ends at the same time and then combined in the middle. CONTENT OF THE UTILITY MODEL

[0003] In view of the above technical problems, the present application provides a low-temperature transmission pipeline system, which utilizes the displacement compensation and installation deviation capacity of the outer corrugated pipe and the inner corrugated pipe to realize the fine adjustment of the low-temperature transmission pipeline system on site, reduce the movement of the equipment on site, and improve the installation efficiency. The outer corrugated pipe and the inner corrugated pipe can be prefabricated independently with the outer pipe and the inner pipe, thereby saving the production cycle.

[0004] The technical scheme adopted by the present application is to provide a low-temperature transmission pipeline system, comprising:

[0005] An outer pipe and an inner pipe, the outer pipe being used for sleeving the inner pipe;

[0006] An outer corrugated pipe, the outer corrugated pipe being used for connecting with the outer pipe;

[0007] An inner corrugated pipe, the inner corrugated pipe being used for connecting with the inner pipe, and the outer corrugated pipe being used for sleeving the inner corrugated pipe;

[0008] An insulating material, the insulating material being used for being located at least between the outer corrugated pipe and the inner corrugated pipe and covering the inner corrugated pipe;

[0009] A support, the support being used for being arranged between the outer corrugated pipe and the inner corrugated pipe, wherein the distance between the end surface of the support facing the outer corrugated pipe and the outer corrugated pipe is less than the distance between the insulating material and the outer corrugated pipe.

[0010] In some embodiments, the insulating material comprises a plurality of insulating units, the insulating units being arranged along the extension direction of the inner corrugated pipe, and the support is clamped between at least two adjacent insulating units.

[0011] In some embodiments, the support is annular, and the support is used to wrap the inner bellows or to wrap the thermal insulation material; or the support comprises a plurality of support units arranged along the circumference of the inner bellows.

[0012] In some embodiments, the minimum inner diameter of the support is 0.3mm-1mm larger than the maximum outer diameter of the inner bellows; and the maximum outer diameter of the support is 0.3mm-1mm smaller than the minimum inner diameter of the outer bellows.

[0013] In some embodiments, the thickness of the thermal insulation material is 10mm-30mm.

[0014] In some embodiments, the distance between the end surface of the support facing the outer bellows and the outer bellows is 10mm-15mm less than the distance between the thermal insulation material and the outer bellows.

[0015] In some embodiments, the length of the inner bellows is 60mm-100mm shorter than the length of the outer bellows.

[0016] In some embodiments, the minimum inner diameter of the outer bellows is larger than the outer diameter of the outer pipe.

[0017] In some embodiments, the low-temperature transmission pipeline system further comprises a sealing plate used to wrap the outer pipe and close the opening between the outer bellows and the outer pipe; the inner diameter of the sealing plate is 0.3mm-1mm larger than the outer diameter of the outer pipe; the outer diameter of the sealing plate is 0.3mm-1mm smaller than the inner diameter of the joint of the outer bellows; and the sealing plate seals the outer pipe and the outer bellows by soldering or sealing glue.

[0018] In some embodiments, the inner bellows and the inner pipe are connected by soldering or sealing glue.

[0019] Distinguished from the prior art, the low-temperature transmission pipeline system provided by the application has the beneficial effects that: the low-temperature transmission pipeline system adopts an outer bellows and an inner bellows, the outer bellows is used to be connected with the outer pipe, and the inner bellows is used to be connected with the inner pipe, because the outer bellows and the inner bellows have the ability to compensate displacement and installation deviation, the low-temperature transmission pipeline system can be fine-tuned on site, the movement of the on-site equipment is reduced, and the installation efficiency is improved; the outer bellows and the inner bellows can be prefabricated independently with the outer pipe and the inner pipe, and the production cycle is saved. By arranging the thermal insulation material at least between the outer bellows and the inner bellows and wrapping the inner bellows, the cold loss of the low-temperature medium in the low-temperature transmission pipeline system during the conveying process can be effectively reduced, and the conveying efficiency and the energy utilization rate of the low-temperature transmission pipeline system are improved; at the same time, the distance between the end face of the support member facing the outer bellows and the outer bellows is less than the distance between the thermal insulation material and the outer bellows, which can prevent the outer bellows from being in contact with the thermal insulation material due to gravity, so that heat is difficult to be transmitted from the inner bellows to the outer bellows through the thermal insulation material, the heat loss of the low-temperature medium in the low-temperature transmission pipeline system is reduced, and the conveying efficiency and the energy utilization rate of the low-temperature transmission pipeline system are improved.

[0020] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the application can be implemented according to the content of the specification, and in order to make the above content and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are intended to further assist in understanding the preferred embodiments, and are not intended to limit the application thereto. Moreover, like reference numerals are intended to denote like parts throughout the various drawings. In the drawings:

[0022] Figure 1 is a structural schematic view of the low-temperature transmission pipeline system of some embodiments of the application;

[0023] Figure 2 is a sectional view of the low-temperature transmission pipeline system of some embodiments of the application;

[0024] Figure 3 is a sectional view of the low-temperature transmission pipeline system of some embodiments of the application;

[0025] Figure 4 is a structural schematic view of the support member in the low-temperature transmission pipeline system of some embodiments of the application;

[0026] Figure 5 is a structural schematic view of the support member in the low-temperature transmission pipeline system of some embodiments of the application;

[0027] Figure 6 is a structural schematic view of a support in a cryogenic transfer line system according to yet other embodiments of the present application.

[0028] Legend:

[0029] Outer pipe 100, inner pipe 200, outer bellows 300, inner bellows 400, thermal insulation 500, support 600, support unit 601, opening 700, closure plate 800. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] The terms "first", "second", "third" in the present application are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0032] The ranges disclosed herein are intended to be "open" ranges, i.e., the upper and lower limits of the range are not included. The ranges are also intended to include any and all sub-ranges of the range, i.e., all combinations of any two of the range limits, unless otherwise indicated. For example, a range of "1 to 10" is intended to include any number from 1 to 10, including the integers 1 and 10. Unless otherwise indicated, the use of "or" in the disclosure herein is the inclusive, and not the exclusive use. That is, "A or B" means "A, B, or both A and B". The use of "and" in the disclosure herein is the inclusive, and not the exclusive use. That is, "A and B" means "both A and B". In addition, the articles "a" and "an" as used in the context herein are to be construed to mean "one or more". Should the application not include the "open" ranges, the ranges would be "closed" ranges, i.e., the upper and lower limits of the range are included. For example, if the minimum of a range is listed as 1 and the maximum of the range is listed as 10, the following ranges are all contemplated: 1-10, 1-2, 2-10, 3-4, and 3-5. Unless otherwise indicated, the use of "a" or "an" in the disclosure herein is the singular, and not the plural use. That is, "a" or "an" means "one". In addition, when a parameter is stated to be an integer, it is equivalent to stating that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0033] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a multitude of embodiments that are in substantial compliance with the principles of the application.

[0034] In the description of the embodiments of the application, the term "and / or" is merely used to describe associated objects, and can represent the following three meanings: A and / or B can represent the following three cases: A alone, A and B, and B alone. In addition, the character " / " in the present application generally represents that the associated objects are in an "or" relationship.

[0035] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0036] Reference Figure 1 and Figure 2The embodiment of the present application provides a low-temperature transmission pipeline system, comprising: an outer pipe 100, an inner pipe 200, an outer bellows 300, an inner bellows 400, thermal insulation material 500 and a support 600; wherein the outer pipe 100 is used for sleeving the inner pipe 200; the outer bellows 300 is used for being connected with the outer pipe 100; the inner bellows 400 is used for being connected with the inner pipe 200; the outer bellows 300 is used for sleeving the inner bellows 400; the thermal insulation material 500 is used for being located at least between the outer bellows 300 and the inner bellows 400 and covering the inner bellows 400; and the support 600 is used for being arranged between the outer bellows 300 and the inner bellows 400, and the distance between the end surface of the support 600 towards the outer bellows 300 and the outer bellows 300 is less than the distance between the thermal insulation material 500 and the outer bellows 300.

[0037] In the technical scheme of the embodiment of the present application, the outer bellows 300 is used for being connected with the outer pipe 100, and the inner bellows 400 is used for being connected with the inner pipe 200, because the outer bellows 300 and the inner bellows 400 have the ability to compensate displacement and installation deviation, so that the low-temperature transmission pipeline system can be fine-tuned on site, the movement of the on-site equipment is reduced, and the installation efficiency is improved; the outer bellows 300 and the inner bellows 400 can be prefabricated independently with the outer pipe 100 and the inner pipe 200, thereby saving the production cycle. By arranging the thermal insulation material 500 to be located at least between the outer bellows 300 and the inner bellows 400 and covering the inner bellows 400, the cold loss of the low-temperature medium in the low-temperature transmission pipeline system during the conveying process can be effectively reduced, and the conveying efficiency and energy utilization rate of the low-temperature transmission pipeline system are improved; at the same time, the distance between the end surface of the support 600 towards the outer bellows 300 and the outer bellows 300 is less than the distance between the thermal insulation material 500 and the outer bellows 300, which can prevent the outer bellows 300 from being in contact with the thermal insulation material 500 due to gravity, so that it is difficult for heat to be transmitted from the inner bellows 400 to the outer bellows 300 through the thermal insulation material 500, the heat loss of the low-temperature medium in the low-temperature transmission pipeline system is reduced, and the conveying efficiency and energy utilization rate of the low-temperature transmission pipeline system are improved.

[0038] In some embodiments, the thermal insulation material 500 comprises a plurality of thermal insulation units, the thermal insulation units are arranged along the extension direction of the inner bellows 400, and the support 600 is clamped between at least two adjacent thermal insulation units.

[0039] In the technical scheme of the embodiment of the present application, the thermal insulation units are arranged along the extension direction of the inner bellows 400, which can effectively isolate the heat exchange between the low-temperature medium in the low-temperature transmission pipeline system and the external environment and reduce the heat loss. The support 600 is clamped between at least two adjacent thermal insulation units, so that the support 600 can be fixedly installed between the outer bellows 300 and the inner bellows 400 through the extrusion of the adjacent thermal insulation units.

[0040] In some embodiments, referring to Figure 4 and Figure 5 The support 600 is annular, and is used for sleeving the inner bellows 400 or the heat insulation material 500.

[0041] In some embodiments, referring to Figure 6 The support 600 includes a plurality of support units 601 arranged along the circumference of the inner bellows 400.

[0042] In the technical scheme of the embodiments, the support 600 is used, so that the outer bellows 300 is prevented from contacting the heat insulation material 500 due to gravity, heat is difficult to be transferred from the inner bellows 400 to the outer bellows 300 through the heat insulation material 500, heat loss of the cryogenic medium in the cryogenic pipeline system is reduced, and the conveying efficiency and energy utilization rate of the cryogenic pipeline system are improved.

[0043] In some embodiments, the minimum inner diameter of the support 600 is greater than the maximum outer diameter of the inner bellows 400 by 0.3mm-1mm; and the maximum outer diameter of the support 600 is smaller than the minimum inner diameter of the outer bellows 300 by 0.3mm-1mm.

[0044] In the technical scheme of the embodiments, the difference between the minimum inner diameter of the support 600 and the maximum outer diameter of the inner bellows 400 and the difference between the maximum outer diameter of the support 600 and the minimum inner diameter of the outer bellows 300 are in the above range, so that the support 600 can slide to a specified position between the inner bellows 400 and the outer bellows 300, support the outer bellows, prevent the outer bellows 300 from contacting the heat insulation material 500 due to gravity, and reduce heat loss of the cryogenic medium in the cryogenic pipeline system. The minimum inner diameter of the support 600 can be greater than the maximum outer diameter of the inner bellows 400 by 0.3mm, 0.31mm, 0.35mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc., or a range formed by any two of the above values, for example, 0.3mm-0.5mm, 0.4mm-0.9mm, 0.8mm-1mm, etc. The maximum outer diameter of the support 600 can be smaller than the minimum inner diameter of the outer bellows 300 by 0.3mm, 0.31mm, 0.35mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc., or a range formed by any two of the above values, for example, 0.3mm-0.5mm, 0.4mm-0.9mm, 0.8mm-1mm, etc.

[0045] In some embodiments, the thickness of the heat insulation material 500 is 10mm-30mm.

[0046] In the technical solution of the embodiment of the application, the thickness of the thermal insulation material 500 is in the above range, which can effectively reduce the cold loss of the low-temperature medium in the low-temperature transmission pipeline system during the conveying process and improve the conveying efficiency and energy utilization rate of the low-temperature transmission pipeline system. The thickness of the thermal insulation material 500 can be 10 mm, 11 mm, 12 mm, 13 mm, 15 mm, 18 mm, 20 mm, 25 mm, 30 mm, etc., or a range formed by any two of the above values, for example, 10 mm to 15 mm, 13 mm to 25 mm, 20 mm to 30 mm, etc.

[0047] In some embodiments, the difference between the distance between the end surface of the support 600 facing the outer bellows 300 and the outer bellows 300 and the distance between the thermal insulation material 500 and the outer bellows 300 is 10 mm to 15 mm.

[0048] In the technical solution of the embodiment of the application, the difference between the distance between the end surface of the support 600 facing the outer bellows 300 and the outer bellows 300 and the distance between the thermal insulation material 500 and the outer bellows 300 is in the above range, which can prevent the outer bellows 300 from being in contact with the thermal insulation material 500 due to gravity and reduce the heat loss of the low-temperature medium in the low-temperature transmission pipeline system. The difference between the distance between the end surface of the support 600 facing the outer bellows 300 and the outer bellows 300 and the distance between the thermal insulation material 500 and the outer bellows 300 can be 10 mm, 10.1 mm, 10.5 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, etc., or a range formed by any two of the above values, for example, 10 mm to 12 mm, 11 mm to 14 mm, 13 mm to 15 mm, etc.

[0049] In some embodiments, the length of the inner bellows 400 is shorter than the length of the outer bellows 300 by 60 mm to 100 mm.

[0050] In the technical solution of the embodiment of the application, the difference between the length of the inner bellows 400 and the length of the outer bellows 300 is in the above range, which provides sufficient space for the connection between the inner bellows 400 and the inner pipe 200. The length of the inner bellows 400 can be shorter than the length of the outer bellows 300 by 60 mm, 61 mm, 62 mm, 63 mm, 64 mm, 65 mm, 70 mm, 75 mm, 80 mm, 90 mm, 100 mm, etc., or a range formed by any two of the above values, for example, 60 mm to 70 mm, 65 mm to 90 mm, 80 mm to 100 mm, etc.

[0051] In some embodiments, the minimum inner diameter of the outer bellows 300 is greater than the outer diameter of the outer pipe 100.

[0052] In the technical scheme of the embodiment of the present application, the outer bellows 300 and the outer pipe 100 are used, so that the outer bellows 300 can slide on the outer pipe 100, the outer bellows 300 can be sleeved on the outer pipe 100 before the inner bellows 400 and the inner pipe 200 are connected, and the outer bellows 300 is slid to the corresponding position after the inner bellows 400 and the inner pipe 200 are connected, so that the outer bellows 300 is sleeved on the inner bellows 400.

[0053] In some embodiments, with reference to Figure 2 and Figure 3 , the low-temperature transmission pipeline system further comprises a sealing plate 800, the sealing plate 800 is used for sleeving the outer pipe 100 and closing the opening 700 between the outer bellows 300 and the outer pipe 100; the sealing plate 800 seals the outer pipe 100 and the outer bellows 300 by soldering or sealing glue.

[0054] In the technical scheme of the embodiment of the present application, the opening 700 between the outer bellows 300 and the outer pipe 100 is closed by the sealing plate 800, so that impurities, gas, heat and the like cannot enter the low-temperature transmission pipeline system through the opening 700, and the low-temperature transmission pipeline system can work stably.

[0055] In some embodiments, the inner diameter of the sealing plate 800 is 0.3mm-1mm larger than the outer diameter of the outer pipe 100; the outer diameter of the sealing plate 800 is 0.3mm-1mm smaller than the inner diameter of the joint of the outer bellows 300.

[0056] In the technical solution of the embodiment of the application, the difference between the inner diameter of the sealing plate 800 and the outer diameter of the outer pipe 100 and the difference between the outer diameter of the sealing plate 800 and the inner diameter of the joint of the outer corrugated pipe 300 are in the above range, so that the sealing plate 800 can slide on the outer pipe 100, the sealing plate 800 can be sleeved on the outer pipe 100 before the inner corrugated pipe 400 and the inner pipe 200 are connected, and after the inner corrugated pipe 400 and the inner pipe 200 are connected, the sealing plate 800 is inserted into the opening 700 between the outer corrugated pipe 300 and the outer pipe 100 to seal the opening 700 between the outer corrugated pipe 300 and the outer pipe 100. The inner diameter of the sealing plate 800 can be greater than the outer diameter of the outer pipe 100 by 0.3 mm, 0.31 mm, 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc., or can be a range composed of any two of the above values, for example, 0.3 mm to 0.5 mm, 0.4 mm to 0.9 mm, 0.8 mm to 1 mm, etc. The outer diameter of the sealing plate 800 can be smaller than the inner diameter of the joint of the outer corrugated pipe 300 by 0.3 mm, 0.31 mm, 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc., or can be a range composed of any two of the above values, for example, 0.3 mm to 0.5 mm, 0.4 mm to 0.9 mm, 0.8 mm to 1 mm, etc.

[0057] In some embodiments, the inner corrugated pipe 400 and the inner pipe 200 are connected by solder or sealant.

[0058] In the technical solution of the embodiment of the application, the inner corrugated pipe 400 and the inner pipe 200 are connected by solder or sealant, which effectively prevents leakage of the medium inside the low-temperature transmission pipeline system and improves the sealing performance and safety of the low-temperature transmission pipeline system.

[0059] In summary, the skilled in the art can easily understand that the application has the following advantages: in the scheme of the application, the outer bellows 300 and the inner bellows 400 have the ability to compensate displacement and installation deviation, so that the low-temperature transmission pipeline system can be fine-tuned on site, the movement of on-site equipment is reduced, and the installation efficiency is improved; the outer bellows 300 and the inner bellows 400 can be prefabricated independently with the outer pipe 100 and the inner pipe 200, saving the production cycle. By setting the thermal insulation material 500 at least between the outer bellows 300 and the inner bellows 400 and covering the inner bellows 400, the cold loss of the low-temperature medium in the low-temperature transmission pipeline system during transportation can be effectively reduced, and the transportation efficiency and energy utilization rate of the low-temperature transmission pipeline system can be improved; at the same time, the distance between the end face of the support 600 towards the outer bellows 300 and the outer bellows 300 is less than the distance between the thermal insulation material 500 and the outer bellows 300, which can prevent the outer bellows 300 from being in contact with the thermal insulation material 500 due to gravity, so that heat is difficult to be transferred from the inner bellows 400 to the outer bellows 300 through the thermal insulation material 500, the heat loss of the low-temperature medium in the low-temperature transmission pipeline system is reduced, and the transportation efficiency and energy utilization rate of the low-temperature transmission pipeline system are improved.

[0060] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A cryogenic transfer line system characterized by, The application relates to a heat insulation pipe, comprising: an outer pipe and an inner pipe, the outer pipe being used for sleeving the inner pipe; an outer bellows, which is used for connecting with the outer pipe; an inner bellows, which is used for connecting with the inner pipe, and the outer bellows is used for sleeving the inner bellows; heat insulation material, which is used for being located at least between the outer bellows and the inner bellows and covering the inner bellows; and a support, which is used for being arranged between the outer bellows and the inner bellows, wherein the distance between the end surface of the support towards the outer bellows and the outer bellows is smaller than the distance between the heat insulation material and the outer bellows. The heat insulation material comprises a plurality of heat insulation units, which are arranged along the extension direction of the inner bellows, and the support is used for being clamped between at least two heat insulation units arranged adjacently.

2. The cryogenic transfer line system of claim 1, wherein, The support is annular, and is used for sleeving the inner bellows or the heat insulation material; or 3. The cryogenic transfer line system of claim 1 or 2, wherein, The support comprises a plurality of support units, which are arranged along the circumference of the inner bellows. The minimum inner diameter of the support is larger than the maximum outer diameter of the inner bellows by 0.3-1 mm, and the maximum outer diameter of the support is smaller than the minimum inner diameter of the outer bellows by 0.3-1 mm.

4. The cryogenic transfer line system of claim 1, wherein, The thickness of the heat insulation material is 10-30 mm.

5. The cryogenic transfer line system of claim 1, wherein, The difference between the distance between the end surface of the support towards the outer bellows and the outer bellows and the distance between the heat insulation material and the outer bellows is 10-15 mm.

6. The cryogenic transfer line system of claim 1, wherein, The length of the inner bellows is shorter than the length of the outer bellows by 60-100 mm.

7. The cryogenic transfer line system of claim 1, wherein, The minimum inner diameter of the outer bellows is larger than the outer diameter of the outer pipe.

8. The cryogenic transfer line system of claim 1, wherein, The application further comprises a sealing plate, which is used for sleeving the outer pipe and closing the opening between the outer bellows and the outer pipe; the inner diameter of the sealing plate is larger than the outer diameter of the outer pipe by 0.3-1 mm; the outer diameter of the sealing plate is smaller than the joint inner diameter of the outer bellows by 0.3-1 mm; and the sealing plate seals the outer pipe and the outer bellows by soldering or sealing glue.

9. The cryogenic transfer line system of claim 8, wherein, The inner bellows and the inner pipe are connected by soldering or sealing glue.

10. The cryogenic transfer line system of claim 1, wherein, ​

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