CN114684506B - Horizontal container for storing low-temperature liquid - Google Patents
Horizontal container for storing low-temperature liquid Download PDFInfo
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- CN114684506B CN114684506B CN202011589931.1A CN202011589931A CN114684506B CN 114684506 B CN114684506 B CN 114684506B CN 202011589931 A CN202011589931 A CN 202011589931A CN 114684506 B CN114684506 B CN 114684506B
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- metal screen
- gas
- cooling pipe
- container
- liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 127
- 238000001816 cooling Methods 0.000 claims abstract description 96
- 229910052751 metal Inorganic materials 0.000 claims abstract description 92
- 239000002184 metal Substances 0.000 claims abstract description 92
- 239000002826 coolant Substances 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000012546 transfer Methods 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 79
- 239000001307 helium Substances 0.000 description 18
- 229910052734 helium Inorganic materials 0.000 description 18
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000003860 storage Methods 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 230000000694 effects 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
- 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
- 238000002309 gasification Methods 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
- 238000000034 method Methods 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
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 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
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 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
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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 screen is arranged between the inner container and the shell, the cold screen comprises a metal screen, one end of the cold screen is provided with a barrel-shaped structure with an opening, and the cold screen is sleeved outside the inner container; the cold source container is used for storing a cooling medium and is provided with a disc-shaped structure for sealing the accommodating cavity, 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 of 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 opening end of the metal screen, the liner 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 heat is prevented from invading the liner.
Description
Technical Field
The invention belongs to the technical field of storage and transportation equipment of low-temperature liquid, and particularly relates to a horizontal container for storing the low-temperature liquid.
Background
In the field of cryogenic technology, cryogenic liquids refer to gases below-160 ℃ that exist in liquid form, such as liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, liquid methane, LNG, and the like, which are widely used in industrial production, hospitals, and daily life. The low-temperature liquid storage container is generally of 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 heat insulation materials are filled between the vacuum layers to ensure the heat insulation effect.
At present, the existing low-temperature liquid storage container mostly adopts a high-vacuum multi-layer heat insulation or vacuum powder heat insulation type, but if the container is used for storing low-temperature liquid with low boiling point and small vaporization latent heat, such as liquid hydrogen and liquid helium, the container is not easy to store, the daily evaporation rate of the container is very high, and the storage time is very short. Containers for holding such liquids must therefore have excellent thermal insulation properties.
Depending on the application, the liquid helium vessel needs to achieve two goals:
(1) The ability to store liquid helium at low pressure for long periods of time with low liquid helium loss to maintain extremely low temperatures requires reduced evaporation of liquid helium;
(2) The liquid helium can be stored in a closed state for a long time without being discharged, which is required to reduce invasion of heat into the inner container.
Currently, liquid helium vessels are mainly small dewar-type. The liquid helium Dewar technique has two directions:
(1) Gas barrier technology. The cold shield of the enclosure outside the inner vessel is cooled by the cold helium gas evaporated in the liquid helium inner vessel so that the amount of heat entering the inner vessel is reduced. The liquid helium Dewar of the gas shield of Cryo Industries company in the United states adopts four cold shields which are welded on a neck pipe, the ultralow temperature is maintained by the heat conduction of the cold shields, and the vacuum multilayer heat insulation is wound on the surfaces of the first cold shield and the fourth cold shield. In addition, chinese patent application number CN200910116175.8 discloses a low-loss liquid helium dewar cooled by double-coil cold vapor, which adopts only one cold screen, and simultaneously leads out two coils from the inner container, cooling neck tube and cold screen respectively, and vacuum multilayer insulation is wound on the surfaces of the liquid helium inner container and cold screen. However, the low-temperature liquid storage container using the heat insulating structure is mostly a small container, and the heat insulating effect of the heat insulating structure is not obvious when the heat insulating structure is used for the storage container with large capacity.
(2) Liquid nitrogen screen technology. Liquid nitrogen screen liquid helium Du Wawei of Cryo Industries company in the United states is used as a cold screen, a liquid nitrogen container with an annular section is used as a cold screen, a liquid helium inner container is wrapped, vacuum multilayer insulation is wound on the outer surface of the liquid helium inner container, and vacuum multilayer insulation is also wound on the outer surface of the liquid nitrogen container. This 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, small cooling capacity and short stabilization time, but has complex and heavy structure, larger nitrogen consumption and needs an auxiliary liquid nitrogen cold source.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing 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 opening end of a metal screen of a barrel-shaped structure, a liner 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 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 of the far end of the metal screen, so that heat is prevented from invading the liner.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
A horizontal container for storing low-temperature liquid comprises a shell and a liner arranged in the shell and used for storing the low-temperature liquid, wherein a cold screen is arranged between the liner and the shell and comprises
One end of the metal screen is provided with an open barrel-shaped structure and sleeved outside the inner container;
the cold source container is used for storing a cooling medium and is provided with a disc-shaped structure for sealing and accommodating the cavity, 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 screen 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 in 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.
Further, 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 into 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 includes
A base connected to the 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 the pressing piece is connected with the base in a buckling way and is provided with a second concave part which can enable the liquid cooling pipe and the gas cooling pipe to be embedded.
Further, the liquid cooling pipe is provided with a plurality of first natural compensation structures;
preferably, the liquid cooling tube is bent into a "pi" like structure constituting the first natural compensating structure.
Further, the gas cooling pipe is provided with a plurality of second natural compensation structures;
Preferably, the gas cooling pipe is bent into a "pi" shaped structure to form the second natural compensation structure.
Further, 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 outer 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 outer shell is arranged in the central mounting hole;
The first connecting part is matched with the second connecting part to clamp the liner in the shell.
Further, one of the first connecting portion and the second connecting portion is to fixedly connect the liner and the outer shell;
the other of the first connecting part and the second connecting part is used for enabling the inner container to be connected with the shell in a sliding mode or a flexible mode;
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 to the housing;
the first connecting piece and the second connecting piece are in relative sliding connection.
Further, an inner heat insulation structure and an outer heat insulation structure are respectively arranged between the inner container and the cold screen and between the outer shell and the cold screen.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
1. The cold source container is arranged into a disc-shaped structure and is connected with the opening end of the metal screen of the barrel-shaped structure, the liner for storing 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 (the near end) of the metal screen, which is 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 (the far end) of the metal screen, which is far away from the cold source container, so that the metal screen can prevent heat from invading into the liner.
2. The low-heat-leakage low-temperature liquid horizontal container provided by the invention has the structures of the liquid screen and the gas screen, can meet the requirements of fixed use and mobile transportation of the horizontal container, and has low static daily evaporation rate and long maintenance time. Compared with the conventional low-temperature liquid Dewar, the cold screen structure is more suitable for long-time airtight storage of low-temperature liquid, occupies less space, has high space utilization rate, and can load more low-temperature liquid under the same external dimension.
3. According to the invention, the fixed heat transfer points are arranged at intervals of the liquid cooling pipe and the gas cooling pipe, 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 also restrict the movement of the cooling pipe relative to the metal screen.
The following describes the 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 and 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. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic view of a horizontal vessel for storing cryogenic liquid of the present invention;
FIG. 2 is a schematic view of a cold source container of 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 cooling tube;
FIG. 7 is a schematic diagram of a heat transfer unit in one embodiment of the invention;
FIG. 8 is a top view of a cold source vessel in accordance with one embodiment of the invention;
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;
FIG. 10 is a top view of a cold source vessel in accordance with another embodiment of the invention;
FIG. 11 is a cross-sectional view taken along B-B in FIG. 10;
FIG. 12 is a schematic view of a heat transfer unit in accordance with another embodiment of the invention;
In the figure: 100. a housing; 200. an inner container; 300. a cold screen; 400. an inner insulation structure; 500. an outer insulation structure; 600. a heat transfer unit; 700. a first connection portion; 800. a second connecting portion;
301. A metal screen; 3011. a cylinder; 3012. a seal head; 3013. a mounting hole; 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 (5) a rivet.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the positional or positional relationship shown in the drawings, merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 12, the present invention provides a horizontal container for storing a cryogenic liquid, which has a double-layered shell structure including an outer shell 100 and an inner container 200. The liner 200 defines a space for containing liquid helium, liquid hydrogen, or other cryogenic liquids. A cold screen 300 is disposed between the inner container 200 and the outer case 100, for preventing heat from entering the inner container 200. An inner heat insulation structure 400 and an outer heat insulation structure 500 are respectively provided between the inner container 200 and the cold shield 300 and between the cold shield 300 and the outer case 100. The inner and outer insulation structures 400 and 500 are generally vacuum multi-layered structures.
The cold screen 300 includes a metal screen 301, a cold source container 302, and a liquid cooling tube 303.
The metal screen 301 has a barrel-shaped structure with an opening at one end, and as shown in fig. 3 and 4, the metal screen 301 comprises a barrel 3011 and a seal head 3012, and the metal screen 301 is sleeved outside the liner 200. The material of the metal screen 301 is preferably copper, aluminum, or an alloy 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 has a disc-shaped structure with a closed accommodating chamber, as shown in fig. 2 and 8-11, the outer edge of the cold source container 302 is connected with the open end of the metal screen 301, so as to wrap the liner 200 inside. 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 tube 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 tube 303 is composed of two straight line segments and an arc segment, the two straight line segments are respectively positioned at the top and the bottom of the cylinder 3011 of the metal screen 301, and the arc segment is positioned on the surface of the seal head 3012 of the metal screen 301.
In detail, the cooling medium flows into the liquid cooling pipe 303 through the cooling medium inlet 3032 by gravity, and when flowing in the liquid cooling pipe 303 provided along the outer circumference of the longitudinal section of the metal screen 301, the cooling medium gasifies to transfer the cooling energy of the cooling medium to the metal screen 301, and finally the cooling medium gas formed by the gasification of the cooling medium is returned 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 needs to be timely replenished.
In the above-mentioned scheme, set up cold source container 302 as disk structure and be connected with the open end of barrel-shaped structure's metal screen 301, wrap up the inner bag 200 that stores low temperature liquid between metal screen 301 and cold source container 302, utilize cold source container 302 to maintain the low temperature of the one end (proximal end) that metal screen 301 is close to cold source container 302, utilize the cooling tube that extends along metal screen 301 surface to set up to maintain the low temperature of one end (distal end) that metal screen 301 kept away from cold source container 302, thereby make metal screen 301 can hinder heat to invade inner bag 200, the above-mentioned scheme not only makes the weight of horizontal container greatly reduced, can guarantee the effect of storing low temperature liquid, realize lower evaporation rate, can realize the long-time airtight storage of low temperature liquid again.
In a further aspect, as shown in fig. 1, the cold screen 300 further includes a gas cooling pipe 304, the gas cooling pipe 304 having a gas inlet 3041 and a gas outlet 3042. The gas inlet 3041 communicates with the liner 200, and the gas outlet 3042 is provided with a gas outlet valve 305; the gas cooling pipe 304 is in a "U" shape from the gas inlet 3041 to the gas outlet 3042, and extends along the surface of the metal screen 301 and is connected to the surface of the metal screen 301. As shown in fig. 6, the gas cooling pipe 304 is composed of two straight line sections and an arc section, the two straight line sections are respectively positioned at the top and the bottom of the cylinder 3011 of the metal screen 301, and the arc section is positioned on the surface of the seal head 3012 of the metal screen 301.
Preferably, the gas inlet 3041 communicates with the top of the liner 200, and the gas outlet 3042 is disposed at the bottom of the liner 200; the gas inlet 3041 and the gas outlet 3042 are provided near 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 liner 200 and the multi-layered heat insulation structure for preventing heat intrusion are provided outside the liner 200, the leakage of heat from the liner 200 is inevitably occurred, and thus, the low temperature liquid in the liner 200 is concentrated at the top of the liner 200 due to the gas having a low temperature formed by the vaporization of the leakage heat. The low temperature gas having a low temperature at the top of the liner 200 is introduced into the gas cooling pipe 304 through the gas inlet 3041, and is circulated around the outer circumference of the longitudinal section of the metal screen 301, the cold of the low temperature gas is transferred to the metal screen 301, and the warmed 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 is equipped with a low-temperature liquid recovery and liquefaction system, the exhaust valve 305 can be opened, the low temperature of the metal screen 301 is maintained by the low-temperature gas which is naturally evaporated, the low evaporation rate is realized, and the gas is discharged into the liquefaction system after being heated. When the horizontal container needs to be moved or is not equipped with a low-temperature liquid recovery and liquefaction system, the exhaust valve 305 is closed, and the low temperature of the metal screen 301 is maintained by means of gasification of the cooling medium, so that the pressure rising speed of the liner 200 is slowed down.
The horizontal container for storing low-temperature liquid provided by the invention can use the liquid screen technology or the gas screen technology only by arranging one layer of metal screen 301, and realizes higher heat insulation performance at lower cost.
In other words, the gas shield structure and the liquid shield structure of the present invention share a thin plate (metal shield 301), but only a gas cooling tube 304 surrounding the metal shield 301 is added, so that no additional space is occupied. When the gas is allowed to be discharged, the low-temperature gas can not only lower the temperature of the metal screen 301 to lower the evaporation rate of the low-temperature liquid by about half, but also lower the temperature of the cooling gas to make the cooling gas act as a cold storage.
In addition, the low-heat-leakage low-temperature liquid horizontal container provided by the invention has the structures of the liquid screen and the gas screen, can meet the requirements of fixed use and mobile transportation of the horizontal container, and has low static daily evaporation rate and long maintenance time. Compared with the conventional low-temperature liquid Dewar, the cold screen 300 is more suitable for long-time airtight storage of low-temperature liquid, occupies less space, has high space utilization rate and can load more low-temperature liquid under the same external 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 tube 303 and the gas cooling tube 304 are embedded in the heat transfer units 600; preferably, the liquid cooling pipe 303 and the gas cooling pipe 304 are disposed parallel to each other on the surface of the metal screen 301.
In detail, in order to enhance the cooling effect of the liquid cooling tube 303 and the gas cooling tube 304 on the metal screen 301, a fixed heat transfer point is provided at intervals between the liquid cooling tube 303 and the gas cooling tube 304, and the fixed heat transfer point can also restrict the movement of the cooling tube relative to the metal screen 301.
In a further aspect, the heat transfer unit 600 includes a base 601 and a press 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 snap-coupled to the base 601, and has a second recess into which the liquid cooling pipe 303 and the gas cooling pipe 304 can be fitted.
In detail, taking an example in which the liquid cooling pipe 303 and the gas cooling pipe 304 are arranged side by side, the structure of the heat transfer unit 600 is shown in fig. 7. The liquid cooling tube 303 and the gas cooling tube 304 are sandwiched by the pressing piece 602 and the base 601, the pressing piece 602 and the base 601 are connected by rivets 603 or screws, and the base 601 and the metal screen 301 are made of the same material and are connected by welding.
Of course, the heat transfer unit 600 may also have a simplified structure, omitting fastening structures such as the pressing piece 602 and the rivet 603 or the screw, and the liquid cooling tube 303 or the gas cooling tube 304 is directly embedded in the base 601, and the contact surface between the cooling tube 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 aspect, as shown in fig. 5, the liquid cooling tube 303 is provided with a plurality of first natural compensating structures 3033; preferably, the liquid cooling tube 303 is bent into a "pi" shape structure to form the first natural compensating structure 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, the gas cooling pipe 304 is bent into a "pi" shape to form the second natural compensating structure 3043.
In the scheme, the flexibility of the natural bending 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 liner 200 is connected with the outer case 100 through the first connection part 700 and the second connection part 800. The cold source container 302 has a central mounting hole 3024 forming an annular structure, and a first connection portion 700 for connecting the liner 200 and the case 100 is installed in the central mounting hole 3024. The metal screen 301 has a mounting hole 3013 at a closed end, and a second connection portion 800 for connecting the liner 200 and the casing 100 is installed in the mounting hole 3013. The first connecting portion 700 cooperates with the second connecting portion 800 to clamp the liner 200 in the outer case 100.
In detail, as shown in fig. 4, the seal head 3012 of the metal screen 301 is provided with a mounting hole 3013, and the second connection portion 800 is mounted in the mounting hole 3013 and plays a supporting role for the liner 200.
As shown in fig. 2, 8 and 10, the central mounting hole 3024 is provided in the middle of the cold source container 302 with a disc structure, so that the cold source container 302 with an annular structure is formed, and the first connection portion 700 is mounted in the central mounting hole 3024 of the cold source container 302 with an annular structure and also plays a role in supporting the liner 200.
The first connection part 700 and the second connection part 800 cooperate to clamp and support the liner 200 in the outer case 100.
It should be noted that the first connection portion 700 and the second connection portion 800 are preferably made of a heat insulating material, so as to avoid heat transfer to the liner 200.
The first and second connection parts 700 and 800 also support the heat sink container 302 and the metal screen 301.
In the above-mentioned scheme, the liner 200 is supported by the first connection portion 700 and the second connection portion 800, so that the stability of the liner 200 during transportation of the horizontal container can be improved.
The main function of the cold source container 302 in the above-mentioned scheme is to store the cooling medium, the working pressure is very low, the shape is not strictly required, and a circular ring shape with an elliptical cross section is the preferred scheme. In order to reduce the processing difficulty, the device can also be a ring shape with a runway cross section (see fig. 9) or a ring shape with a rectangular cross section (see fig. 11), and other shapes which are easy to process and manufacture.
In a further aspect, one of the first connection part 700 and the second connection part 800 is to fixedly connect the liner 200 with the outer case 100; the other of the first connection part 700 and the second connection part 800 is to slidably or flexibly connect the liner 200 to the outer case 100.
In detail, by providing one of the connection portions between the liner 200 and the casing 100 in the form of a sliding connection or a flexible connection, the connection portion can cope with the problem of thermal 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, which leads the cooling medium from the bottom of the cold source container 302, is to make one turn around the outer circumference of the longitudinal section of the metal screen 301, and transfer the cooling energy of the cooling medium to the metal screen 301, and back to the top of the cold source container 302. In order to increase the amount of heat exchange between the liquid cooling pipe 303 and the metal screen 301, the number of windings of the liquid cooling pipe 303 on the metal screen 301 may also be increased, increasing the number of heat transfer units 600.
Also, the simplest arrangement of the gas cooling tube 304, which guides the low temperature gas from the top of the inner container 200, is to turn around the outer circumference of the longitudinal section of the metal screen 301, transfer the cold of the low temperature gas to the metal screen 301, and finally guide the cold to the outside of the outer case 100. In order to increase the amount of heat exchange between the gas cooling pipe 304 and the metal screen 301, the number of windings of the gas cooling pipe 304 on the metal screen 301 may also be increased, increasing the number of heat transfer units 600.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (13)
1. The utility model provides a horizontal container for storing low temperature liquid, includes the shell, and install in be used for storing the inner bag of low temperature liquid in the shell, the inner bag with be provided with cold screen between the shell, its characterized in that: the cold screen comprises
One end of the metal screen is provided with an open barrel-shaped structure and sleeved outside the inner container;
the cold source container is used for storing a cooling medium and is provided with a disc-shaped structure for sealing and accommodating the cavity, 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;
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 in 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.
2. A horizontal vessel for storing cryogenic liquids according to claim 1, characterized in that:
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;
the gas inlet and the gas outlet are provided at positions close to the cooling medium inlet and the cooling medium outlet, respectively.
3. A horizontal vessel for storing cryogenic liquids according to claim 1 or 2, characterized in that:
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 into the heat transfer units.
4. A horizontal vessel for storing cryogenic liquids according to claim 3, characterized in that:
the liquid cooling pipe and the gas cooling pipe are arranged on the surface of the metal screen in parallel.
5. A horizontal vessel for storing cryogenic liquids according to claim 3, characterized in that:
The heat transfer unit comprises
A base connected to the 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 piece which is connected with the base in a buckling way and is provided with a second concave part which can enable the liquid cooling pipe and the gas cooling pipe to be embedded.
6. A horizontal vessel for storing cryogenic liquids according to claim 1 or 2, characterized in that:
the liquid cooling tube is provided with a plurality of first natural compensating structures.
7. A horizontal vessel for storing cryogenic liquids according to claim 6, characterized in that:
The liquid cooling pipe is bent into an 'II' -shaped structure to form the first natural compensation structure.
8. A horizontal vessel for storing cryogenic liquids according to claim 1 or 2, characterized in that:
The gas cooling pipe is provided with a plurality of second natural compensation structures.
9. A horizontal vessel for storing cryogenic liquids according to claim 8, characterized in that:
The gas cooling pipe is bent into an II-shaped structure to form the second natural compensation structure.
10. A horizontal vessel for storing cryogenic liquids according to claim 1 or 2, characterized in that:
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 outer 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 outer shell is arranged in the central mounting hole;
The first connecting part is matched with the second connecting part to clamp the liner in the shell.
11. A horizontal vessel for storing cryogenic liquids according to claim 10, characterized in that:
one of the first connecting part and the second connecting part is used for fixedly connecting the liner with the shell;
The other of the first connecting part and the second connecting part is used for enabling the inner container to be connected with the shell in a sliding mode or a flexible mode.
12. A horizontal vessel for storing cryogenic liquids according to claim 11, characterized in that:
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 to the housing;
the first connecting piece and the second connecting piece are in relative sliding connection.
13. A horizontal vessel for storing cryogenic liquids according to claim 1 or 2, characterized in that:
an inner heat insulation structure and an outer heat insulation structure are respectively arranged between the inner container and the cold screen and between the outer shell and the cold screen.
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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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| CN114684506A CN114684506A (en) | 2022-07-01 |
| CN114684506B true CN114684506B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (9)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018120467B4 (en) * | 2018-08-22 | 2022-01-20 | Hanon Systems | Devices for storing refrigerants in a refrigerant circuit and methods for operating the devices |
-
2020
- 2020-12-29 CN CN202011589931.1A patent/CN114684506B/en active Active
Patent Citations (9)
| 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 |
| 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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|---|---|
| CN114684506A (en) | 2022-07-01 |
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