CN114684506A - Horizontal container for storing cryogenic liquid - Google Patents
Horizontal container for storing cryogenic liquid Download PDFInfo
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- CN114684506A CN114684506A CN202011589931.1A CN202011589931A CN114684506A CN 114684506 A CN114684506 A CN 114684506A CN 202011589931 A CN202011589931 A CN 202011589931A CN 114684506 A CN114684506 A CN 114684506A
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- metal screen
- gas
- cooling pipe
- container
- inner container
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- 239000007788 liquid Substances 0.000 title claims abstract description 128
- 238000001816 cooling Methods 0.000 claims abstract description 94
- 229910052751 metal Inorganic materials 0.000 claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 91
- 239000002826 coolant Substances 0.000 claims abstract description 50
- 238000009413 insulation Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 77
- 239000001307 helium Substances 0.000 description 17
- 229910052734 helium Inorganic materials 0.000 description 17
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000003860 storage Methods 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/028—Wall construction hollow-walled, e.g. double-walled with spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/744—Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a horizontal container for storing low-temperature liquid, which comprises a shell and an inner container, wherein a cold shield is arranged between the inner container and the shell, the cold shield comprises a metal shield, one end of the cold shield is provided with an open barrel-shaped structure, and the cold shield is sleeved outside the inner container; the cold source container is used for storing cooling media and has a disc-shaped structure for closing the accommodating chamber, and the outer edge of the cold source container is connected with the opening end of the metal screen; and the liquid cooling pipe is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium inlet is communicated with the lower part of the cold source container, the cooling medium outlet is communicated with the upper part of the cold source container, and the liquid cooling pipe is in a U-shaped structure from the cooling medium inlet to the cooling medium outlet, extends along the surface of the metal screen and is connected with the surface of the metal screen. The cold source container is connected with the open end of the metal screen, the inner container is wrapped between the metal screen and the cold source container, the cold source container is used for maintaining the low temperature of the near end of the metal screen, and the liquid cooling pipe is used for maintaining the low temperature of the far end of the metal screen, so that the heat is prevented from invading the inner container.
Description
Technical Field
The invention belongs to the technical field of cryogenic liquid storage and transportation equipment, and particularly relates to a horizontal container for storing cryogenic liquid.
Background
In the field of cryogenic technology, cryogenic liquid refers to gases that exist in liquid form at temperatures below-160 ℃, such as liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, liquid methane, LNG, and the like, and they are widely used in industrial production, hospitals, and daily lives. The low-temperature liquid storage container is generally a double-layer structure consisting of an inner container and an outer shell, wherein a vacuum layer is arranged between the inner container and the outer shell, and a heat insulation material is filled between the vacuum layers to ensure the heat insulation effect.
At present, most of the existing cryogenic liquid storage containers are of a high-vacuum multilayer insulation type or a vacuum powder insulation type, but if the cryogenic liquid storage containers are used for storing cryogenic liquid with low boiling point and small vaporization latent heat, such as liquid hydrogen and liquid helium, the cryogenic liquid storage containers are not easy to store, the daily evaporation rate is very high, and the storage time is very short. Therefore, containers for holding such liquids must have excellent thermal insulation properties.
Depending on the application, liquid helium vessels need to achieve two objectives:
(1) the ability to store liquid helium at low pressure for long periods of time with low liquid helium loss to maintain very low temperatures requires a reduction in the amount of liquid helium that evaporates;
(2) liquid helium can be stored in a sealed state for a long time without being discharged, which is required to reduce the intrusion of heat into the inner container.
At present, liquid helium containers are mainly small dewars. The liquid helium dewar technique has two directions:
(1) gas screen technology. The cold shield outside the inner vessel is cooled by the cold helium gas evaporated in the inner vessel of liquid helium so that the amount of heat entering the inner vessel is reduced. The gas screen liquid helium dewar of the company of Cryo Industries in America adopts four cold screens, all welds on the neck pipe, relies on the heat-conduction of cold screen self to maintain the ultra-low temperature, and the first cold screen has the thermal insulation of vacuum multilayer with the winding of fourth cold screen outward appearance. In addition, chinese patent application No. CN200910116175.8 discloses a low-loss liquid helium dewar for double-coil cold vapor refrigeration, which only uses one cold shield, and two coils are led out from the inner container to respectively cool the neck tube and the cold shield, and the outer surfaces of the inner container and the cold shield are wrapped with vacuum multi-layer thermal insulation. However, most of the cryogenic liquid storage containers using such a heat insulating structure are small containers, and the heat insulating effect of large-capacity storage containers using such a heat insulating structure is not significant.
(2) Liquid nitrogen screen technology. Taking a liquid nitrogen screen liquid helium Dewar of Cryo Industries in America as an example, a liquid nitrogen container with an annular section is used as a cold screen to wrap an inner container of liquid helium, the outer surface of the inner container of liquid helium is wound with vacuum multilayer heat insulation, and the outer surface of the liquid nitrogen container is also wound with vacuum multilayer heat insulation. The structure can reduce heat radiation and ensure heat insulation effect. The low-temperature liquid storage container with the heat insulation structure has better heat insulation performance than that of a gas screen container, is small in cold quantity and short in stabilization time, but is complex and heavy in structure, large in nitrogen consumption and required to be provided with an auxiliary liquid nitrogen cold source.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a horizontal container for storing low-temperature liquid, wherein a cold source container is arranged in a disc-shaped structure and is connected with the open end of a metal screen in a barrel-shaped structure, an inner container for storing the low-temperature liquid is wrapped between the metal screen and the cold source container, the cold source container is used for maintaining the low temperature at the near end of the metal screen, and a cooling pipe extending along the surface of the metal screen is used for maintaining the low temperature at the far end of the metal screen, so that the heat is prevented from invading the inner container.
In order to solve the technical problems, the invention adopts the technical scheme that:
a horizontal container for storing cryogenic liquid comprises a shell and an inner container which is arranged in the shell and used for storing cryogenic liquid, wherein a cold screen is arranged between the inner container and the shell, and the cold screen comprises
One end of the metal screen is provided with an open barrel-shaped structure and is sleeved outside the inner container;
the cold source container is used for storing a cooling medium and has a disc-shaped structure for closing the accommodating chamber, and the outer edge of the cold source container is connected with the opening end of the metal screen;
the liquid cooling pipe is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium inlet is communicated with the lower part of the cold source container, the cooling medium outlet is communicated with the upper part of the cold source container, and the liquid cooling pipe is in a U-shaped structure from the cooling medium inlet to the cooling medium outlet, extends along the surface of the metal screen and is connected with the surface of the metal screen.
Further, the cold shield also comprises a gas cooling pipe,
the gas cooling pipe is provided with a gas inlet and a gas outlet, the gas inlet is communicated with the inner container, and the gas outlet is provided with an exhaust valve;
the gas cooling pipe is of a U-shaped structure from the gas inlet to the gas outlet, extends along the surface of the metal screen and is connected with the surface of the metal screen.
Further, the gas inlet is communicated with the top of the inner container, and the gas outlet is arranged at the bottom of the inner container;
preferably, the gas inlet and the gas outlet are provided at positions close to the cooling medium inlet and the cooling medium outlet, respectively.
Furthermore, a plurality of heat transfer units are arranged on the surface of the metal screen, and the liquid cooling pipe and the gas cooling pipe are embedded in the heat transfer units;
preferably, the liquid cooling pipe and the gas cooling pipe are arranged in parallel on the surface of the metal screen.
Further, the heat transfer unit comprises
A base connected to a surface of the metal screen and having a first recess into which the liquid cooling pipe and the gas cooling pipe can be fitted;
and a pressing sheet which is connected with the base in a buckling manner and is provided with a second concave part which can enable the liquid cooling pipe and the gas cooling pipe to be embedded in.
Further, the liquid cooling pipe is provided with a plurality of first natural compensation structures;
preferably, said liquid cooling tubes are bent into a "pi" like configuration to constitute said first natural compensation configuration.
Furthermore, the gas cooling pipe is provided with a plurality of second natural compensation structures;
preferably, said gas cooling tubes are bent into a "pi" configuration to form said second natural compensation configuration.
Furthermore, a mounting hole is formed in the closed end of the metal screen, and a first connecting part for connecting the inner container and the shell is arranged in the mounting hole;
the cold source container is provided with a central mounting hole to form an annular structure, and a second connecting part for connecting the inner container and the shell is arranged in the central mounting hole;
the first connecting part and the second connecting part are matched to clamp the inner container in the shell.
Further, one of the first connecting part and the second connecting part is used for fixedly connecting the inner container with the outer shell;
the other one of the first connecting part and the second connecting part is used for enabling the inner container to be in sliding connection or flexible connection with the outer shell;
preferably, the other of the first connection portion and the second connection portion includes:
the first connecting piece is connected with the inner container;
a second connector connected with the housing;
the first connecting piece is connected with the second connecting piece in a relatively sliding mode.
Further, an inner heat insulation structure and an outer heat insulation structure are respectively arranged between the inner container and the cold shield and between the outer shell and the cold shield.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. The invention sets the cold source container into a disc-shaped structure and is connected with the open end of the metal screen of the barrel-shaped structure, the inner container for storing the low-temperature liquid is wrapped between the metal screen and the cold source container, the cold source container is used for maintaining the low temperature of one end (near end) of the metal screen close to the cold source container, and the cooling pipe extending along the surface of the metal screen is used for maintaining the low temperature of one end (far end) of the metal screen far away from the cold source container, so that the metal screen can prevent heat from invading the inner container.
2. The low-heat-leakage low-temperature liquid horizontal container provided by the invention has the liquid screen and gas screen structures, can meet the requirements of fixed use and mobile transportation of the horizontal container, and has low static daily evaporation rate of low-temperature liquid and long maintenance time. Compared with a conventional low-temperature liquid Dewar, the cold shield structure is more suitable for long-time closed storage of low-temperature liquid, occupies less space, is high in space utilization rate, and can load more low-temperature liquid under the same overall dimension.
3. According to the invention, the liquid cooling pipe and the gas cooling pipe are provided with the fixed heat transfer points at intervals, so that the cooling effect of the liquid cooling pipe and the gas cooling pipe on the metal screen is enhanced, and the fixed heat transfer points can restrict the movement of the cooling pipe relative to the metal screen.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a horizontal vessel for storing cryogenic liquids according to the present invention;
FIG. 2 is a schematic view of a cold source container according to the present invention;
FIG. 3 is a schematic view of a metal screen of the present invention;
FIG. 4 is another angular schematic view of the structure of FIG. 3;
FIG. 5 is a schematic view of a liquid cooling tube;
FIG. 6 is a schematic view of a gas-cooled tube;
FIG. 7 is a schematic view of a heat transfer unit in an embodiment of the invention;
FIG. 8 is a top view of a cold source container in an embodiment of the present invention;
FIG. 9 is a sectional view taken along line A-A of FIG. 8;
FIG. 10 is a top view of a cold source container according to another embodiment of the present invention;
FIG. 11 is a sectional view taken along line B-B of FIG. 10;
FIG. 12 is a schematic view of a heat transfer unit in accordance with another embodiment of the present invention;
in the figure: 100. a housing; 200. an inner container; 300. cooling the screen; 400. an internal insulating structure; 500. an outer insulating structure; 600. a heat transfer unit; 700. a first connection portion; 800. a second connecting portion;
301. a metal screen; 3011. a barrel; 3012. sealing the end; 3013. mounting holes; 302. a cold source container; 3024. a central mounting hole; 303. a liquid cooling tube; 3031. a cooling medium outlet; 3032. a cooling medium inlet; 3033. a first natural compensation structure; 304. a gas cooling tube; 3041. a gas inlet; 3042. a gas outlet; 3043. a second natural compensation structure; 305. an exhaust valve;
601. a base; 602. tabletting; 603. and (4) riveting.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 12, the present invention provides a horizontal vessel for storing a cryogenic liquid, which has a double-layered shell structure including an outer shell 100 and an inner container 200. The inner container 200 defines a space for containing liquid helium, liquid hydrogen, or other cryogenic liquid. A cold shield 300 is disposed between the inner container 200 and the outer case 100 to block heat from entering the inner container 200. An inner heat insulation structure 400 and an outer heat insulation structure 500 are respectively arranged between the inner container 200 and the cold shield 300 and between the cold shield 300 and the outer shell 100. The inner and outer insulating structures 400 and 500 are generally vacuum multi-layer structures.
The cold shield 300 comprises a metal shield 301, a cold source container 302 and a liquid cooling pipe 303.
The metal screen 301 is a barrel-shaped structure with an opening at one end, as shown in fig. 3 and 4, and includes a barrel 3011 and a head 3012, and the metal screen 301 is sleeved outside the inner container 200. The material of the metal screen 301 is preferably copper, aluminum and alloys thereof. To facilitate evacuation of the container, the metal screen 301 may be vented.
The cold source container 302 is used for storing a cooling medium, such as liquid nitrogen or other cooling medium suitable as a cold source. The cold source container 302 is a disc-shaped structure having a closed accommodating chamber, as shown in fig. 2, 8-11, an outer edge of the cold source container 302 is connected to an open end of the metal screen 301, and the inner container 200 is enclosed therein. Preferably by welding.
The liquid cooling pipe 303 has a cooling medium inlet 3032 and a cooling medium outlet 3031. The cooling medium inlet 3032 is communicated with the lower part of the cold source container 302, the cooling medium outlet 3031 is communicated with the upper part of the cold source container 302, and the liquid cooling pipe 303 is integrally in a U-shaped structure from the cooling medium inlet 3032 to the cooling medium outlet 3031, extends along the surface of the metal screen 301 and is connected with the surface of the metal screen 301. As shown in fig. 5, the liquid cooling pipe 303 is composed of two straight line segments and an arc segment, the two straight line segments are respectively located at the top and the bottom of the cylinder 3011 of the metal screen 301, and the arc segment is located on the surface of the end socket 3012 of the metal screen 301.
In detail, the cooling medium flows into the liquid cooling pipe 303 through the cooling medium inlet 3032 under the action of gravity, when the cooling medium flows in the liquid cooling pipe 303 arranged along the periphery of the longitudinal section of the metal shield 301, the cooling medium is gasified to transmit the cold energy of the cooling medium to the metal shield 301, and finally, the cooling medium gas formed by gasifying the cooling medium is sent back to the gas phase space at the upper part of the cold source container 302 through the cooling medium outlet 3031. When the cooling medium level in the cold source container 302 is low, the cooling medium must be replenished in time.
In the above-mentioned scheme, set up cold source container 302 into disc structure and be connected with the open end of the metal screen 301 of tubbiness structure, the inner bag 200 that will store cryogenic liquid wraps up between metal screen 301 and cold source container 302, utilize cold source container 302 to maintain the low temperature that metal screen 301 is close to the one end (the near-end) of cold source container 302, utilize the cooling tube that extends the setting along metal screen 301 surface to maintain the low temperature that metal screen 301 keeps away from the one end (the distal end) of cold source container 302, thereby make metal screen 301 can hinder heat invasion inner bag 200, above-mentioned scheme not only makes horizontal container's weight greatly reduced, can also guarantee the storage effect to cryogenic liquid, realize lower evaporation rate, can realize cryogenic liquid's long-time airtight storage again.
In a further aspect, as shown in fig. 1, the cold shield 300 further includes a gas cooling pipe 304, and the gas cooling pipe 304 has a gas inlet 3041 and a gas outlet 3042. The gas inlet 3041 is communicated with the liner 200, and the gas outlet 3042 is provided with an exhaust valve 305; the gas cooling pipes 304 are in a U-shaped structure from the gas inlet 3041 to the gas outlet 3042, and extend along the surface of the metal screen 301 and are connected to the surface of the metal screen 301. As shown in fig. 6, the gas cooling pipe 304 is composed of two straight segments and an arc segment, the two straight segments are respectively located at the top and the bottom of the cylinder 3011 of the metal screen 301, and the arc segment is located on the surface of the end socket 3012 of the metal screen 301.
Preferably, the gas inlet 3041 is communicated with the top of the inner container 200, and the gas outlet 3042 is arranged at the bottom of the inner container 200; the gas inlet 3041 and the gas outlet 3042 are provided at positions close to the cooling medium outlet 3031 and the cooling medium inlet 3032, respectively.
In detail, although the cold shield 300 for maintaining the low temperature of the inner container 200 and the multi-layer heat insulating structure for preventing the heat from entering are provided outside the inner container 200, heat leakage of the inner container 200 is inevitable, and thus, the low temperature gas generated by the vaporization of the low temperature liquid in the inner container 200 due to the heat leakage is collected at the top of the inner container 200. The low-temperature gas with lower temperature at the top of the liner 200 is introduced into the gas cooling pipe 304 through the gas inlet 3041, and winds a circle along the periphery of the longitudinal section of the metal screen 301, so that the cold energy of the low-temperature gas is transferred to the metal screen 301, and the heated gas is discharged. The discharge of the warmed gas may be controlled or regulated by a vent valve 305.
In the above scheme, when the horizontal container is fixed and equipped with a low-temperature liquid recovery and liquefaction system, the exhaust valve 305 may be opened, the low temperature of the metal screen 301 is maintained by the naturally evaporated low-temperature gas, a low evaporation rate is achieved, and the gas is exhausted into the liquefaction system after being heated. When the horizontal container needs to be moved or a low-temperature liquid recovery and liquefaction system is not equipped, the exhaust valve 305 is closed at the moment, and the low temperature of the metal screen 301 is maintained by virtue of the gasification of the cooling medium, so that the pressure rise speed of the inner container 200 is slowed down.
The horizontal container for storing cryogenic liquid provided by the invention is provided with only one layer of metal screen 301, so that the liquid screen technology and the gas screen technology can be applied, and the high heat insulation performance is realized at low cost.
In other words, the gas shield structure and the liquid shield structure provided by the invention share one thin plate (the metal shield 301), and only one gas cooling pipe 304 surrounding the metal shield 301 is added, so that the gas shield structure and the liquid shield structure do not occupy additional space. When the gas is allowed to be discharged, the low-temperature gas can not only reduce the temperature of the metal screen 301 to reduce the evaporation rate of the low-temperature liquid by about half, but also reduce the temperature of the cooling gas to enable the cooling gas to play a role in cold storage.
Moreover, the low-heat-leakage low-temperature liquid horizontal container provided by the invention has the liquid screen and gas screen structures, can meet the requirements of fixed use and mobile transportation of the horizontal container, and has low static daily evaporation rate of low-temperature liquid and long maintenance time. Compared with a conventional low-temperature liquid Dewar, the cold shield 300 is more suitable for long-time closed storage of low-temperature liquid, occupies less space, is high in space utilization rate, and can be used for loading more low-temperature liquid under the same overall dimension.
In some embodiments of the present invention, the surface of the metal screen 301 is provided with a plurality of heat transfer units 600, and the liquid cooling pipes 303 and the gas cooling pipes 304 are embedded in the heat transfer units 600; preferably, the liquid cooling pipe 303 and the gas cooling pipe 304 are arranged in parallel on the surface of the metal screen 301.
In detail, in order to enhance the cooling effect of the liquid cooling pipe 303 and the gas cooling pipe 304 on the metal screen 301, a fixed heat transfer point is arranged at intervals between the liquid cooling pipe 303 and the gas cooling pipe 304, and the fixed heat transfer point can restrict the movement of the cooling pipe relative to the metal screen 301.
In a further aspect, the heat transfer unit 600 includes a base 601 and a preform 602. The base 601 is connected to the surface of the metal screen 301, and has a first recess into which the liquid cooling pipe 303 and the gas cooling pipe 304 can be fitted. The pressing piece 602 is coupled to the base 601 by being engaged therewith, and has a second recess into which the liquid cooling pipe 303 and the gas cooling pipe 304 can be fitted.
In detail, the liquid cooling pipe 303 and the gas cooling pipe 304 are arranged side by side, and the structure of the heat transfer unit 600 is as shown in fig. 7. The liquid cooling pipe 303 and the gas cooling pipe 304 are sandwiched by a pressing sheet 602 and a base 601, the pressing sheet 602 is connected with the base 601 through a rivet 603 or a screw, and the base 601 and the metal screen 301 are made of the same material and are connected through welding.
Of course, the heat transfer unit 600 may also have a simplified structure, a fastening structure such as a pressing sheet 602, a rivet 603, or a screw is omitted, the liquid cooling pipe 303 or the gas cooling pipe 304 is directly embedded in the base 601, the contact surface between the cooling pipe and the base 601 maintains good heat conduction, and the base 601 and the metal screen 301 are connected by welding. The cross-section of the heat transfer unit 600 is shown in fig. 12.
In a further scheme, as shown in fig. 5, the liquid cooling pipe 303 is provided with a plurality of first natural compensating structures 3033; preferably, said liquid cooling tubes 303 are bent into a "pi" like configuration constituting said first natural compensating configuration 3033.
In a further aspect, as shown in fig. 6, the gas cooling pipe 304 is provided with a plurality of second natural compensating structures 3043; preferably, said gas cooling tubes 304 are bent into a "pi" shaped configuration to form said second natural compensating configuration 3043.
In the scheme, the flexibility of the natural bent shape of the pipeline is utilized to compensate the thermal expansion of the pipeline and the displacement of the end point.
In some embodiments of the present invention, the inner container 200 is connected to the outer case 100 by the first connection part 700 and the second connection part 800. The cold source container 302 has a central mounting hole 3024 to form a ring structure, and a first connection part 700 for connecting the inner container 200 and the outer container 100 is installed in the central mounting hole 3024. A mounting hole 3013 is formed in the closed end of the metal screen 301, and a second connecting portion 800 for connecting the inner container 200 and the outer shell 100 is installed in the mounting hole 3013. The first connecting portion 700 and the second connecting portion 800 cooperate to clamp the inner container 200 in the outer shell 100.
In detail, as shown in fig. 4, a mounting hole 3013 is formed in the end cover 3012 of the metal screen 301, and the second connecting portion 800 is mounted in the mounting hole 3013 and supports the inner container 200.
As shown in fig. 2, 8 and 10, the central mounting hole 3024 is formed in the middle of the cold source container 302 having the disk-shaped structure, so that the cold source container 302 having the annular structure is formed, and the first connection part 700 is mounted in the central mounting hole 3024 of the cold source container 302 having the annular structure and also supports the inner container 200.
The first connecting portion 700 and the second connecting portion 800 cooperate to clamp and support the inner container 200 in the outer shell 100.
It should be noted that the first connection portion 700 and the second connection portion 800 are preferably heat insulating materials to prevent heat transfer to the inner container 200.
In addition, the first connection part 700 and the second connection part 800 also support the cold source container 302 and the metal screen 301.
In the above scheme, the first connecting portion 700 and the second connecting portion 800 are used for supporting the liner 200, so that the stability of the liner 200 of the horizontal container in the transportation process can be improved.
The main function of the cold source container 302 in the above scheme is to store the cooling medium, the working pressure is very low, the shape is not strictly required, and the circular ring with the oval cross section is the preferred scheme. In order to reduce the processing difficulty, the circular ring with the section being a runway (see fig. 9) or a rectangular section (see fig. 11) can be adopted, and other shapes which are easy to process and manufacture can be adopted.
In a further aspect, one of the first connection portion 700 and the second connection portion 800 is used to fixedly connect the inner container 200 to the outer shell 100; the other of the first connecting portion 700 and the second connecting portion 800 is used to slidably or flexibly connect the inner container 200 to the outer case 100.
In detail, one of the connection portions between the inner container 200 and the outer container 100 is configured to be a sliding connection or a flexible connection, so that the connection portion can cope with expansion and contraction due to temperature change.
In a preferred embodiment, the other of the first connection part 700 and the second connection part 800 includes a first connection member and a second connection member. The first connecting piece is connected with the inner container 200; a second connector is connected to the housing 100; the first connecting piece and the second connecting piece are in relative sliding connection.
In the present invention, the simplest arrangement of the liquid cooling pipe 303 leading out the cooling medium from the bottom of the cold source container 302 is to wind a circle along the outer circumference of the longitudinal section of the metal screen 301, and transmit the cold energy of the cooling medium to the metal screen 301, and return to the top of the cold source container 302. In order to increase the amount of heat exchange between the liquid cooling tubes 303 and the metal screen 301, the number of windings of the liquid cooling tubes 303 on the metal screen 301 may also be increased, increasing the number of heat transfer units 600.
Similarly, the simplest arrangement of the gas cooling pipe 304 after leading out the low-temperature gas from the top of the inner container 200 is to wind a circle along the outer circumference of the longitudinal section of the metal screen 301, transmit the cold energy of the low-temperature gas to the metal screen 301, and finally lead out the low-temperature gas to the outside of the outer shell 100. In order to increase the amount of heat exchange between the gas-cooling tubes 304 and the metal screen 301, the number of turns of the gas-cooling tubes 304 wound on the metal screen 301 may also be increased, increasing the number of heat transfer units 600.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a horizontal container for storing cryogenic liquids, includes the shell and install in be used for storing cryogenic liquids's in the shell inner bag, the inner bag with be provided with cold screen, its characterized in that between the shell: the cold shield comprises
One end of the metal screen is provided with an open barrel-shaped structure and is sleeved outside the inner container;
the cold source container is used for storing a cooling medium and has a disc-shaped structure for closing the accommodating chamber, and the outer edge of the cold source container is connected with the opening end of the metal screen;
the liquid cooling pipe is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium inlet is communicated with the lower part of the cold source container, the cooling medium outlet is communicated with the upper part of the cold source container, and the liquid cooling pipe is in a U-shaped structure from the cooling medium inlet to the cooling medium outlet, extends along the surface of the metal screen and is connected with the surface of the metal screen.
2. A horizontal vessel for storing cryogenic liquids according to claim 1, wherein: the cold shield further comprises a gas cooling tube,
the gas cooling pipe is provided with a gas inlet and a gas outlet, the gas inlet is communicated with the inner container, and the gas outlet is provided with an exhaust valve;
the gas cooling pipe is of a U-shaped structure from the gas inlet to the gas outlet, extends along the surface of the metal screen and is connected with the surface of the metal screen.
3. A horizontal vessel for storing cryogenic liquids according to claim 2, wherein:
the gas inlet is communicated with the top of the inner container, and the gas outlet is arranged at the bottom of the inner container;
preferably, the gas inlet and the gas outlet are provided at positions close to the cooling medium inlet and the cooling medium outlet, respectively.
4. A horizontal vessel for storing cryogenic liquids according to claim 2 or 3, wherein:
the surface of the metal screen is provided with a plurality of heat transfer units, and the liquid cooling pipe and the gas cooling pipe are embedded in the heat transfer units;
preferably, the liquid cooling pipe and the gas cooling pipe are arranged in parallel on the surface of the metal screen.
5. The horizontal vessel for storing a cryogenic liquid according to claim 4, wherein:
the heat transfer unit comprises
A base connected to a surface of the metal screen and having a first recess into which the liquid cooling pipe and the gas cooling pipe can be fitted;
and a pressing sheet which is connected with the base in a buckling manner and is provided with a second concave part which can enable the liquid cooling pipe and the gas cooling pipe to be embedded in.
6. A horizontal vessel for storing cryogenic liquids according to any one of claims 1 to 5, wherein:
the liquid cooling pipe is provided with a plurality of first natural compensation structures;
preferably, said liquid cooling tubes are bent into a "pi" like configuration to constitute said first natural compensation configuration.
7. A horizontal vessel for storing cryogenic liquids according to any one of claims 2 to 6, wherein:
the gas cooling pipe is provided with a plurality of second natural compensation structures;
preferably, said gas cooling tube is bent into a "pi" shaped configuration to form said second natural compensating configuration.
8. A horizontal vessel for storing cryogenic liquid according to any one of claims 1 to 7, wherein:
a mounting hole is formed in the closed end of the metal screen, and a first connecting part for connecting the inner container and the shell is arranged in the mounting hole;
the cold source container is provided with a central mounting hole to form an annular structure, and a second connecting part for connecting the inner container and the shell is arranged in the central mounting hole;
the first connecting part and the second connecting part are matched to clamp the inner container in the shell.
9. A horizontal vessel for storing cryogenic liquids according to claim 8, wherein:
one of the first connecting part and the second connecting part is used for fixedly connecting the inner container with the outer shell;
the other one of the first connecting part and the second connecting part is used for enabling the inner container to be in sliding connection or flexible connection with the outer shell;
preferably, the other of the first connection portion and the second connection portion includes:
the first connecting piece is connected with the inner container;
a second connector connected with the housing;
the first connecting piece is connected with the second connecting piece in a relatively sliding mode.
10. A horizontal vessel for storing cryogenic liquid according to any one of claims 1 to 9, wherein:
an inner heat insulation structure and an outer heat insulation structure are respectively arranged between the inner container and the cold shield and between the outer shell and the cold shield.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011589931.1A CN114684506B (en) | 2020-12-29 | 2020-12-29 | Horizontal container for storing low-temperature liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011589931.1A CN114684506B (en) | 2020-12-29 | 2020-12-29 | Horizontal container for storing low-temperature liquid |
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| CN114684506B CN114684506B (en) | 2024-05-28 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4140073A (en) * | 1977-07-12 | 1979-02-20 | Frigitemp Corporation | Thermal barrier system for liquefied gas tank |
| JPH06163251A (en) * | 1992-11-25 | 1994-06-10 | Sumitomo Electric Ind Ltd | Cryogenic vessel |
| CN101498538A (en) * | 2009-02-09 | 2009-08-05 | 中国科学技术大学 | Double-coil pipe cold steam refrigerating low-loss liquid helium Dewar |
| CN102563340A (en) * | 2011-01-17 | 2012-07-11 | 丁雨福 | Horizontal low-temperature heat-insulating gas cylinder |
| CN106015921A (en) * | 2016-07-07 | 2016-10-12 | 张家港富瑞氢能装备有限公司 | Vertical container used for storing low-temperature liquid |
| CN106641697A (en) * | 2016-12-09 | 2017-05-10 | 中国科学院理化技术研究所 | Low-temperature liquid storage container with slit inner fin type heat exchanger and cold screen |
| CN110056762A (en) * | 2019-05-17 | 2019-07-26 | 中国科学院理化技术研究所 | A kind of cryogenic liquid tank |
| US20200064029A1 (en) * | 2018-08-22 | 2020-02-27 | Hanon Systems | Device for storing refrigerant of a refrigerant circuit system and method for operating the device |
| CN111566402A (en) * | 2017-12-08 | 2020-08-21 | 林德有限责任公司 | Transport container with coolable thermal shield |
| CN212178517U (en) * | 2020-04-21 | 2020-12-18 | 重庆贝纳吉超低温应用技术研究院有限公司 | Liquid helium container |
-
2020
- 2020-12-29 CN CN202011589931.1A patent/CN114684506B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4140073A (en) * | 1977-07-12 | 1979-02-20 | Frigitemp Corporation | Thermal barrier system for liquefied gas tank |
| JPH06163251A (en) * | 1992-11-25 | 1994-06-10 | Sumitomo Electric Ind Ltd | Cryogenic vessel |
| CN101498538A (en) * | 2009-02-09 | 2009-08-05 | 中国科学技术大学 | Double-coil pipe cold steam refrigerating low-loss liquid helium Dewar |
| CN102563340A (en) * | 2011-01-17 | 2012-07-11 | 丁雨福 | Horizontal low-temperature heat-insulating gas cylinder |
| CN106015921A (en) * | 2016-07-07 | 2016-10-12 | 张家港富瑞氢能装备有限公司 | Vertical container used for storing low-temperature liquid |
| CN106641697A (en) * | 2016-12-09 | 2017-05-10 | 中国科学院理化技术研究所 | Low-temperature liquid storage container with slit inner fin type heat exchanger and cold screen |
| CN111566402A (en) * | 2017-12-08 | 2020-08-21 | 林德有限责任公司 | Transport container with coolable thermal shield |
| US20200064029A1 (en) * | 2018-08-22 | 2020-02-27 | Hanon Systems | Device for storing refrigerant of a refrigerant circuit system and method for operating the device |
| CN110056762A (en) * | 2019-05-17 | 2019-07-26 | 中国科学院理化技术研究所 | A kind of cryogenic liquid tank |
| CN212178517U (en) * | 2020-04-21 | 2020-12-18 | 重庆贝纳吉超低温应用技术研究院有限公司 | Liquid helium container |
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| CN114684506B (en) | 2024-05-28 |
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