Horizontal liquid helium container

Abstract

The invention provides a horizontal liquid helium container. The horizontal liquid helium container comprises an outer container, a suspension supporting structure, an inner container, a cold shield and a reinforcing ring, a vacuum cold insulation layer is formed between the outer container and the inner container; the cold shield is arranged between the outer container and the inner container; the outer container is connected with the cold shield through the suspension supporting structure, and the inner container is connected with the cold shield through the suspension supporting structure; the outer wall of the inner container is wrapped with a winding type heat insulation layer; and a plurality of groups of reinforcing rings are arranged on the outer wall of the outer container at intervals. The vacuum cold insulation layer is arranged, the cold shield is arranged in the vacuum cold insulation layer, the inner container, the cold shield and the outer container are connected through the suspension supporting structure, and the winding type heat insulation layer is arranged outside the inner container, so that the cold leakage phenomenon is reduced. By arranging multiple groups of reinforcing rings on the outer container at intervals, the structural strength and stability of the outer container are enhanced, and the phenomena of fatigue and failure of equipment can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas storage and transportation, and in particular to a horizontal liquid helium container. Background Art

[0002] Helium is a colorless and odorless gas. Due to its special physical and chemical properties, it can be widely used in aerospace, military weapons, low-temperature superconductors and semiconductor research and development, and is one of the indispensable raw materials in the field of high precision. If helium is directly stored and transported in containers under normal conditions, there is a problem of small single storage and transportation volume. Therefore, it should be processed to convert it into a liquid with higher density. However, due to its extremely small interatomic interaction and mass, the liquefaction conditions are relatively harsh. Only at extremely low temperatures can helium be converted from gas to liquid. Therefore, liquid helium is also an extremely important low-temperature source. Currently, the known sources of helium are air and natural gas, but the helium content in air is only about 5 parts per million. In comparison, the helium content in natural gas can reach 7%. Although only natural gas mined near uranium mines has the characteristics of helium-rich, even natural gas judged to be poor in helium has a helium content several times that of air. Therefore, the main source of helium used in industry is purification from natural gas. Therefore, as the most important means of liquid helium storage and transportation, how to improve the existing liquid helium storage tanks is an urgent problem to be solved.

[0003] Liquid helium storage tanks are used to store ultra-low temperature liquids, and have extremely high requirements for thermal insulation performance. Currently, most of them use high-vacuum multi-layer shielding insulation to improve heat retention. High-vacuum multi-layer shielding technology refers to the use of vacuum to reduce convection and heat conduction in the equipment while setting up multi-layer shielding to reduce thermal radiation. Studies have shown that among thermal convection, thermal conduction and thermal radiation, thermal radiation is the main form of heat loss in liquid helium storage tanks. Therefore, in order to reduce the heat loss of the tank, the most critical method is to optimize its structure and various parameters. How to minimize its thermal radiation while ensuring the storage capacity of the liquid helium storage tank is a major problem in the current design of liquid helium storage tanks. Summary of the invention

[0004] In order to enrich the product categories of liquid helium storage tanks, increase the selection space of liquid helium storage methods, and improve the thermal insulation effect of liquid helium storage tanks, an embodiment of the present invention provides a horizontal liquid helium container.

[0005] The present invention proposes a horizontal liquid helium container, comprising: an outer container, a suspension support structure, an inner container, a cold shield and a reinforcement ring;

[0006] A vacuum cold-insulation layer is formed between the outer container and the inner container;

[0007] The cold shield is arranged between the outer container and the inner container;

[0008] The outer container and the cold shield are connected respectively, as are the inner container and the cold shield, via the suspension support structure;

[0009] The outer wall of the inner container is wrapped with a winding insulation layer;

[0010] A plurality of groups of reinforcement rings are arranged at intervals on the outer wall of the outer container.

[0011] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, flange covers are provided at both ends of the inner container, and the flange covers are connected to the cold shield.

[0012] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, reinforcing support structures are provided inside the two ends of the inner container, and the reinforcing support structures are fixedly connected to the flange cover.

[0013] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, the suspension support structure includes a suspension rod and suspension ears arranged at both ends of the suspension rod;

[0014] A plurality of groups of the suspension support structures are arranged between the inner container and the cold shield, wherein a suspension ear at one end of the suspension support structure is connected to the flange cover, and a suspension ear at the other end is connected to the cold shield.

[0015] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, four groups of the suspension support structures are symmetrically arranged between the inner container and the cold shield.

[0016] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, a plurality of groups of suspension support structures are arranged between the outer container and the cold shield, and a suspension lug at one end of the suspension support structure is connected to the outer container, and a suspension lug at the other end is connected to the cold shield.

[0017] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, two groups of the suspension support structures are symmetrically arranged on the left and right sides of the inner container;

[0018] Two groups of the suspension support structures are symmetrically arranged on the upper part of the inner container.

[0019] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, a plurality of groups of pre-cooling pipes are provided on the cold screen.

[0020] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, the cross-sectional shape of the pre-cooling pipe is Ω-shaped, circular or square.

[0021] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, the pre-cooling pipe is fixedly connected to the cold shield by welding or branch pipe clamps.

[0022] In one or some optional embodiments, in the above-mentioned horizontal liquid helium container, the flow medium of the pre-cooling pipe is liquid nitrogen.

[0023] In one or some optional embodiments, the above-mentioned horizontal liquid helium container further includes: a container support;

[0024] A plurality of groups of container supports are arranged at intervals at the bottom of the outer container.

[0025] Based on the above technical solution, the beneficial effects of the present invention compared with the prior art are as follows:

[0026] The horizontal liquid helium container provided in the embodiment of the present invention is provided with a vacuum cold insulation layer, and a cold shield is provided in the vacuum cold insulation layer. The thermal conductivity of the vacuum cold insulation layer is lower, so the thermal insulation performance can be effectively improved. On the premise of ensuring the storage capacity of the liquid helium storage tank, the cold leakage caused by thermal radiation and convection is effectively reduced; and the inner container, the cold shield and the outer container are connected by a hanging support structure, which can reduce the contact between the layers, effectively reduce the internal low temperature from being conducted to the outside through the solid, and reduce the cold leakage caused by the conduction of cold; and by providing a winding insulation layer outside the inner container, the heat radiation conducted from the inside is isolated and reflected, thereby greatly reducing the cold leakage of the inner container itself and reducing the cold leakage phenomenon.

[0027] The horizontal liquid helium container provided in the embodiment of the present invention has a high reinforcement strength by arranging multiple groups of reinforcement rings at intervals on the outer container, thereby enhancing the structural strength and stability of the outer container, effectively preventing fatigue and failure of the equipment, increasing the safety and reliability of the equipment during operation, reducing the resource loss caused by leakage of the liquid helium storage tank, optimizing the overall structure of the equipment, and improving the working efficiency of the equipment.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a horizontal liquid helium container provided by an embodiment of the present invention;

[0031] Figure 2It is a partial structural schematic diagram of a flange cover and a reinforced support structure of a horizontal liquid helium container provided by an embodiment of the present invention;

[0032] Figure 3 1 is a schematic structural diagram of a cold shield of a horizontal liquid helium container provided in an embodiment of the present invention;

[0033] Figure 4 It is a structural schematic diagram of a cold shield and a pre-cooling pipe of a horizontal liquid helium container provided by an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the inner container and cold shield connection structure of the horizontal liquid helium container provided by the embodiment of the present invention Figure 1 ;

[0035] Figure 6 It is a schematic diagram of the arrangement of the inner container and the cold shield suspension support structure of the horizontal liquid helium container provided by an embodiment of the present invention;

[0036] Figure 7 It is a schematic diagram of the outer container and cold shield connection structure of a horizontal liquid helium container provided by an embodiment of the present invention;

[0037] Figure 8 It is a schematic diagram of the arrangement of the outer container and the cold shield suspension support structure of the horizontal liquid helium container provided by an embodiment of the present invention;

[0038] Fig. 9 It is a front view of the suspension support structure of the horizontal liquid helium container provided by an embodiment of the present invention;

[0039] Fig.10 It is a left view of the suspension support structure of the horizontal liquid helium container provided by an embodiment of the present invention.

[0040] In the figure:

[0041] 1 is an outer container, 2 is a suspension support structure, 3 is an inner container, 4 is a cold screen, 5 is a reinforcement ring, 6 is a container support, 7 is a pre-cooling pipe, 8 is a suspension ear, 9 is a suspension rod, 10 is a flange cover, and 11 is a reinforcement support structure. DETAILED DESCRIPTION

[0042] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "far", "near", "front", "back" and the like indicate positions or positional relationships based on the positions 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The inventors have found that the existing liquid helium storage tanks still have certain limitations in reducing the thermal radiation of liquid helium, and it is difficult to truly solve the problem of liquid helium cooling leakage. Some liquid helium storage tanks even have certain safety hazards, such as:

[0046] An existing spherical ultra-low temperature storage tank device includes an inner tank, an outer tank, a cold insulation layer and an airtight layer. The inner tank of the device can be made of 304, 316 or nickel-based alloy steel, which can withstand the environment inside the ultra-low temperature tank, and the internal cold insulation layer is designed with a stacking type. The upper layer is made of expanded perlite, and the lower layer is made of foam glass bricks or polyurethane insulation materials, which can achieve the two functions of heat dissipation and pressure bearing. Since its outer tank adopts a reinforced concrete structure, the device has a strong external load resistance, so while breaking through the volume limit of the storage tank, it can also meet the overall safety and reliability requirements. However, since the device is not equipped with a true vacuum cold insulation layer, the layers can conduct cold through direct contact, so the problem of cold leakage is not solved; on the other hand, although the spherical inner tank has a high structural strength, there is still a high probability of fatigue and failure in a deep cold environment, resulting in the loss of contents and secondary public safety accidents.

[0047] An existing liquid helium storage device for temperature zone protection includes a liquid helium storage tank, a liquid nitrogen insulation sleeve, a liquid nitrogen outer cylinder, a liquid nitrogen inner cylinder, an aluminum cylinder, a liquid nitrogen inlet pipe, a vacuum shell, and an end cover. The device is provided with a liquid nitrogen insulation sleeve on the outside of the liquid helium storage tank, and is provided with a circle of aluminum cylinders. Therefore, after the device has been running for a certain period of time, even if a certain amount of liquid nitrogen is lost, the aluminum cylinder with excellent insulation performance can maintain a lower temperature to a certain extent, and the vacuum shell of the device is not in direct contact with the liquid nitrogen insulation sleeve, which prevents the accelerated volatilization of liquid nitrogen, thereby effectively reducing the loss of liquid helium. However, due to the high filling degree of its internal structure, although an insulation structure is provided, the internal low temperature will still be transmitted to the outside through the solid to cause cold leakage; on the other hand, since the internal tank body has not been reinforced and is only covered with a circle of aluminum cylinders, if failure occurs, the liquid helium in the liquid helium storage tank will be rapidly vaporized, endangering the safety of surrounding facilities and causing a large amount of resource waste.

[0048] Based on this, an embodiment of the present invention provides a horizontal liquid helium container, which is described in detail below through specific embodiments.

[0049] The embodiment of the present invention provides a horizontal liquid helium container, comprising: an outer container 1, a suspension support structure 2, an inner container 3, a cold shield 4 and a reinforcement ring 5;

[0050] A vacuum layer is formed between the outer container 1 and the inner container 3;

[0051] The cold shield 4 is arranged between the outer container 1 and the inner container 3;

[0052] The outer container 1 and the cold shield 4 as well as the inner container 3 and the cold shield 4 are connected respectively via the suspension support structure 2;

[0053] The outer wall of the inner container 3 is wrapped with a winding insulation layer;

[0054] A plurality of groups of reinforcement rings 5 ​​are arranged at intervals on the outer wall of the outer container 1 .

[0055] In the embodiment of the present invention, referring to Figure 1 As shown, the outer container 1 is composed of a cylindrical body and two elliptical heads. Multiple groups of reinforcement rings 5 ​​are arranged at intervals on the outer wall of the cylindrical body. In the embodiment of the present invention, the number of the multiple groups of reinforcement rings 5 ​​can be set according to actual conditions, for example, it can be obtained through a container external pressure stability test. In the embodiment of the present invention, the material type of the reinforcement ring 5 can be angle steel or H-shaped steel. Of course, it can also be other materials with reinforcement functions in the prior art. Those skilled in the art can choose according to actual needs, and no specific limitation is made here.

[0056] In a specific embodiment, referring to Figure 1As shown, the horizontal liquid helium container further includes: a container support 6; a plurality of groups of the container supports 6 are arranged at intervals at the bottom of the outer container 1. Specifically, the plurality of groups of container supports 6 are arranged at intervals at the bottom of the cylindrical barrel, wherein the container supports 6 at the left and right ends can be arranged at a certain distance from the elliptical head of the outer container 1. In the embodiment of the present invention, the number, installation position and type of the container supports 6 can be determined according to actual needs, for example, by calculating the strength and stability of the container, and the stability of the outer container 1 is enhanced by the plurality of reinforcement rings 5.

[0057] In the embodiment of the present invention, a vacuum cold insulation layer is formed by evacuating the gap between the outer container 1 and the inner container 3. This realizes true vacuum cold insulation, and it is difficult for the layers to directly contact and conduct cold energy. Under the premise of ensuring the storage capacity of the liquid helium storage tank, the cold leakage caused by thermal radiation and convection is effectively reduced.

[0058] In the embodiment of the present invention, a cold shield 4 is provided in the vacuum cold insulation layer between the outer container 1 and the inner container 3 to cool down the temperature zone at a specific position. Figure 3 As shown, the overall shape of the cold shield 4 is cylindrical or rectangular, and can be assembled by block assembly, riveting or overall welding.

[0059] In one embodiment, referring to Figure 1 and Figure 2 As shown, flange covers 10 are provided at both ends of the inner container 3 , and the flange covers 10 are connected to the cold shield 4 .

[0060] Specifically, reinforcing support structures 11 may be provided inside the two ends of the inner container 3 , and the reinforcing support structures 11 are fixedly connected to the flange cover 10 .

[0061] In the embodiment of the present invention, referring to Figure 1 and Figure 2 As shown, the inner container 3 is composed of a cylindrical body and two elliptical or butterfly-shaped heads. The heads on the left and right sides of the inner container 3 are respectively provided with flange covers 10, which will be connected to the cold screen 4. The inner sides of the heads on the left and right sides of the inner container are correspondingly provided with reinforcing support structures 11. The reinforcing support structure 11 is fixedly connected to the flange cover 10 to play a role in structural support and reinforcement of the flange cover 10.

[0062] In the embodiment of the present invention, the inner container 3 is the part that directly contacts with the liquid helium. When it is filled with liquid, it will deform as the internal temperature drops sharply. Therefore, its material can be stainless steel with good low-temperature performance, and the surface can be smoothed to reduce its thermal radiation rate.

[0063] In this embodiment, since the outer container 1 is in the outermost layer, its material can be carbon steel with relatively high strength, and an anti-corrosion paint can be sprayed on the outer surface of the outer container 1, thereby improving the anti-corrosion performance of the outer container 1 and extending the service life of the outer container 1.

[0064] In one embodiment, referring to Fig. 9 and Fig.10 As shown, the suspension support structure 2 includes a suspension rod 9 and suspension ears 8 arranged at both ends of the suspension rod 9;

[0065] Combination Figure 5 and Figure 6 As shown, a plurality of groups of the suspension support structures 2 are arranged between the inner container 3 and the cold shield 4 , and a suspension ear 8 at one end of the suspension support structure 2 is connected to the flange cover 10 , and a suspension ear 8 at the other end is connected to the cold shield 4 .

[0066] In a specific embodiment, referring to Figure 5 and Figure 6 As shown, four groups of the suspension support structures 2 are symmetrically arranged between the inner container 3 and the cold shield 4 .

[0067] Combination Figure 7 and Figure 8 As shown, a plurality of groups of suspension support structures 2 are arranged between the outer container 1 and the cold shield 4 , and a suspension ear 8 at one end of the suspension support structure 2 is connected to the outer container 1 , and a suspension ear 8 at the other end is connected to the cold shield 4 .

[0068] In a specific embodiment, referring to Figure 7 and Figure 8 As shown, two groups of the suspension support structures 2 are symmetrically arranged on the left and right sides of the inner container 3; two groups of the suspension support structures 2 are symmetrically arranged on the upper part of the inner container 3. The cold shield 4 is connected to the outer container 1 through the suspension support structure 2, and four groups of suspension support structures are symmetrically arranged on the left and right ends, and no suspension support structure is arranged in the lower half area of ​​the outer container 1.

[0069] In the embodiment of the present invention, the material of the suspension ear 8 and the suspension rod 9 of the suspension support structure 2 can be selected according to actual needs, for example, it can be 16MnDR or S316L. The size and thickness of the suspension ear 8 and the suspension rod 9 can also be determined according to strength calculation and stress calculation. For example, the thickness of the suspension ear 8 and the suspension rod 9 can be 10 mm.

[0070] In one embodiment, referring to Figure 3 and Figure 4 As shown, a plurality of groups of pre-cooling pipes 7 are provided on the cold shield 4 .

[0071] In a specific embodiment, the cross-sectional shape of the pre-cooling pipe 7 is Ω-shaped, circular or square.

[0072] In a specific embodiment, the pre-cooling pipe 7 is fixedly connected to the cold shield 4 by welding or pipe clamping.

[0073] In a specific embodiment, the flow medium of the pre-cooling pipe 7 is liquid nitrogen.

[0074] In the embodiment of the present invention, the number and laying orientation of the pre-cooling pipes 7 laid on the cold screen 4 can be determined according to actual conditions, for example, by calculating the cold screen temperature distribution and determining it according to the calculation result of the cold screen temperature distribution.

[0075] The horizontal liquid helium container provided in the embodiment of the present invention is provided with a vacuum cold insulation layer, and a cold shield is provided in the vacuum cold insulation layer. The thermal conductivity of the vacuum cold insulation layer is lower, so the thermal insulation performance can be effectively improved. On the premise of ensuring the storage capacity of the liquid helium storage tank, the cold leakage caused by thermal radiation and convection is effectively reduced; and the inner container, the cold shield and the outer container are connected by a hanging support structure, which can reduce the contact between the layers, effectively reduce the internal low temperature from being conducted to the outside through the solid, and reduce the cold leakage caused by the conduction of cold; and by providing a winding insulation layer outside the inner container, the heat radiation conducted from the inside is isolated and reflected, thereby greatly reducing the cold leakage of the inner container itself and reducing the cold leakage phenomenon.

[0076] The horizontal liquid helium container provided in the embodiment of the present invention has a high reinforcement strength by arranging multiple groups of reinforcement rings at intervals on the outer container, thereby enhancing the structural strength and stability of the outer container, effectively preventing fatigue and failure of the equipment, increasing the safety and reliability of the equipment during operation, reducing the resource loss caused by leakage of the liquid helium storage tank, optimizing the overall structure of the equipment, and improving the working efficiency of the equipment.

[0077] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0078] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

Claims

1. A horizontal liquid helium container, characterized in that: include: An outer container (1), a suspension support structure (2), an inner container (3), a cold shield (4) and a reinforcement ring (5); A vacuum cold-insulation layer is formed between the outer container (1) and the inner container (3); The cold shield (4) is arranged between the outer container (1) and the inner container (3); The outer container (1) and the cold shield (4) as well as the inner container (3) and the cold shield (4) are respectively connected via the suspension support structure (2); The outer wall of the inner container (3) is wrapped with a winding insulation layer; A plurality of groups of reinforcement rings (5) are arranged at intervals on the outer wall of the outer container (1).

2. The horizontal liquid helium container according to claim 1, characterized in that: Flange covers (10) are provided at both ends of the inner container (3), and the flange covers (10) are connected to the cold shield (4).

3. The horizontal liquid helium container according to claim 2, characterized in that: A reinforcing support structure (11) is provided inside the two ends of the inner container (3), and the reinforcing support structure (11) is fixedly connected to the flange cover (10).

4. The horizontal liquid helium container according to claim 2, characterized in that: The suspension support structure (2) comprises a suspension rod (9) and suspension ears (8) arranged at two ends of the suspension rod (9); A plurality of groups of the suspension support structures (2) are arranged between the inner container (3) and the cold shield (4); a suspension ear (8) at one end of the suspension support structure (2) is connected to the flange cover (10), and a suspension ear (8) at the other end is connected to the cold shield (4).

5. The horizontal liquid helium container according to claim 4, characterized in that: Four groups of the suspension support structures (2) are symmetrically arranged between the inner container (3) and the cold shield (4).

6. The horizontal liquid helium container according to claim 5, characterized in that: A plurality of groups of suspension support structures (2) are arranged between the outer container (1) and the cold shield (4); a suspension lug (8) at one end of the suspension support structure (2) is connected to the outer container (1), and a suspension lug (8) at the other end is connected to the cold shield (4).

7. The horizontal liquid helium container according to claim 6, characterized in that: Two groups of the suspension support structures (2) are symmetrically arranged on the left and right sides of the inner container (3); Two groups of suspension support structures (2) are symmetrically arranged on the upper part of the inner container (3).

8. The horizontal liquid helium container according to any one of claims 1 to 7, characterized in that: A plurality of groups of pre-cooling pipes (7) are arranged on the cold screen (4).

9. The horizontal liquid helium container according to claim 8, characterized in that: The cross-sectional shape of the precooling pipe (7) is Ω-shaped, circular or square.

10. The horizontal liquid helium container according to claim 8, characterized in that: The pre-cooling pipe (7) is fixedly connected to the cold screen (4) by welding or pipe clamping.

11. The horizontal liquid helium container according to claim 8, characterized in that: The flow medium of the precooling pipe (7) is liquid nitrogen.

12. The horizontal liquid helium container according to any one of claims 1 to 7, characterized in that: Also includes: Container support (6); A plurality of groups of container supports (6) are arranged at intervals at the bottom of the outer container (1).

Images