CN116734158B - Supporting structure and low-temperature container - Google Patents
Supporting structure and low-temperature container Download PDFInfo
- Publication number
- CN116734158B CN116734158B CN202310663749.3A CN202310663749A CN116734158B CN 116734158 B CN116734158 B CN 116734158B CN 202310663749 A CN202310663749 A CN 202310663749A CN 116734158 B CN116734158 B CN 116734158B
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- Prior art keywords
- axial
- radial
- pipe
- tube
- support
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/10—Vessels not under pressure with provision for thermal insulation by liquid-circulating or vapour-circulating jackets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/001—Thermal insulation specially adapted for cryogenic vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0362—Thermal insulations by liquid means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/01—Mounting arrangements
- F17C2205/0123—Mounting arrangements characterised by number of vessels
- F17C2205/0126—One vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/238—Filling of insulants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to the technical field of low-temperature liquefied gas transportation, in particular to a supporting structure and a low-temperature container, wherein the supporting structure comprises a first supporting part; the first support part comprises a first axial member and at least one group of first radial members arranged on the first axial member; the first axial member comprises a first axial inner pipe, a first lantern ring and a first axial outer pipe which are sequentially arranged from inside to outside; the first sleeve ring is sleeved on the outer wall of the first axial inner pipe; the first collar and the first axial outer tube are not in contact; the first radial piece comprises a first radial inner pipe and a first radial outer pipe which are sequentially arranged from inside to outside; the first end of the first radial inner tube passes through the first through hole and is fixedly connected to the first lantern ring, and the first radial inner tube is not contacted with the first through hole; the first end of the first radial outer tube is fixedly connected to the first axial outer tube; the second end of the first radially inner tube is connected to the second end of the first radially outer tube. The support structure has high strength, good stability and low heat leak rate, and can meet the requirement of long-distance transportation.
Description
Technical Field
The invention relates to the technical field of low-temperature liquefied gas transportation, in particular to a supporting structure and a low-temperature container.
Background
The boiling points of liquid helium and liquid hydrogen are extremely low (the boiling point of the liquid helium is-268.9 ℃ and the boiling point of the liquid hydrogen is-253 ℃), the values of the vaporization latent heat of the two mediums are also extremely low, wherein the vaporization latent heat of the liquid hydrogen is 456.35kJ/kg, the vaporization latent heat value of the liquid helium under the boiling point is 19.51kJ/kg, and the vaporization latent heat of the liquid helium is 1/26 of that of LNG (liquefied natural gas); storage and transport containers for liquid helium and liquid hydrogen containers are extremely demanding for cold insulation performance based on the characteristics of the medium.
The failure of the existing liquid helium liquid hydrogen container is shown as unstable or too high heat leakage rate, so that the medium is scattered, and the heat leakage through the supporting structure accounts for more than 60%, so that the long-distance transportation requirement cannot be met.
Accordingly, there is an urgent need to provide a support structure with low heat leak rate to meet long distance transportation requirements.
Disclosure of Invention
In view of one or more technical problems of the prior art, the invention provides a supporting structure and a low-temperature container, wherein the supporting structure has low heat leak rate and can meet the requirement of long-distance transportation.
The present invention provides in a first aspect a support structure for connecting or securing an inner vessel and an outer vessel of a cryogenic container; the support structure comprises a first support structure arranged at the fixed end of the low-temperature container;
the first support structure includes a first support portion;
the first supporting part comprises a first axial component and at least one group of first radial components distributed on the first axial component;
the first axial member comprises a first axial inner pipe, a first lantern ring and a first axial outer pipe which are sequentially arranged from inside to outside; the first sleeve ring is sleeved on the outer wall of the first axial inner pipe; the first collar and the first axial outer tube are not in contact; a first through hole is formed in the pipe wall of the first axial outer pipe;
the first radial piece comprises a first radial inner pipe and a first radial outer pipe which are sequentially arranged from inside to outside; the first end of the first radial inner pipe passes through the first through hole and is fixedly connected to the first lantern ring; the first radial inner tube is not contacted with the first through hole; the first end of the first radial outer tube is fixedly connected to the first axial outer tube; the second end of the first radially inner tube is connected to the second end of the first radially outer tube.
The present invention provides in a second aspect a cryogenic vessel comprising the support structure of the first aspect.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides a supporting structure comprising an axial member and a radial member, wherein the axial member and the radial member are both of a multi-layer sleeve structure; by structural design of the axial member and the radial member, the heat conduction path is prolonged, so that a heat bridge of the supporting structure is increased, and the heat leakage power of the supporting structure is reduced; and meanwhile, the structural design of the axial part and the radial part is beneficial to improving the strength, the rigidity and the stability of the supporting structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a cryogenic vessel according to the present invention;
fig. 2 is a schematic structural view of a first supporting portion provided by the present invention;
FIG. 3 is a schematic view of a second support portion according to the present invention;
fig. 4 is a schematic structural view of a third supporting portion provided by the present invention;
fig. 5 is a schematic structural view of a second plug provided by the present invention;
fig. 6 is a schematic structural diagram of a third plug provided by the present invention.
Reference numerals:
1-a first support;
11-a first axial member; 111-a first axial inner tube; 112-a first collar; 113-a first axial outer tube;
12-a first radial member; 121-a first radial inner tube; 122-a first radially outer tube; 123-a first plug;
2-a second support;
21-a second axial member; 211-fixing the tube; 212-a second axial inner tube; 213-a second collar; 214-a second axial outer tube;
22-a second radial member; 221-a first inner tube; 222-a second radial inner tube; 223-a second radial outer tube; 224-second plug; 2241-first support; 2242-first reverse fold sleeve support; 2243-first cladding tube closure;
3-a third support;
31-a third axial member; 311-a third axial inner tube; 312-a third collar; 313-a third axial outer tube;
32-a third radial member; 321-a second inner tube; 322-a third radial inner tube; 323-a third radial outer tube; 324-a third plug; 3241-a second support; 3242-second reverse fold sleeve support; 3243-second interlayer pipe plug;
4-fixing the flange bolts;
5-an inner container;
6-a liquid nitrogen container;
7-cooling screen;
8-an outer tank;
9-interlayer pipe plugs.
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 of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
In the description of embodiments of the present invention, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance unless explicitly specified or limited otherwise; the term "plurality of sets" refers to two or more sets unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, 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 can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, it should be understood that the terms "upper", "lower", and the like used in the embodiments of the present invention are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In the context of the present invention, it will be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements; the sliding end and the fixed end of the low-temperature container respectively correspond to the left end and the right end in the drawing.
1-2, the present invention provides in a first aspect a support structure for connecting or securing an inner vessel 5 and an outer vessel 8 of a cryogenic container; the support structure comprises a first support structure arranged at the fixed end of the low-temperature container;
the first support structure comprises a first support 1;
the first support 1 comprises a first axial member 11 and at least one set of first radial members 12 distributed on the first axial member 11;
the first axial member 11 comprises a first axial inner tube 111, a first collar 112 and a first axial outer tube 113 which are sequentially arranged from inside to outside; the first collar 112 is sleeved on the outer wall of the first axial inner tube 111; the first collar 112 and the first axial outer tube 113 are not in contact; a first through hole is arranged on the pipe wall of the first axial outer pipe 113;
the first radial member 12 comprises a first radial inner pipe 121 and a first radial outer pipe 122 which are sequentially arranged from inside to outside; a first end of the first radial inner tube 121 passes through the first through hole and is fixedly connected to the first collar 112, and the first radial inner tube 121 is not contacted with the first through hole; a first end of the first radial outer tube 122 is fixedly connected to the first axial outer tube 113; a second end of the first radially inner tube 121 is connected to a second end of the first radially outer tube 122.
The invention provides a supporting structure comprising an axial member and a radial member, wherein the axial member and the radial member are both of a multi-layer sleeve structure; by structural design of the axial member and the radial member, the heat conduction path is prolonged, so that a heat bridge of the supporting structure is increased, and the heat leakage power of the supporting structure is reduced; meanwhile, the structural design of the axial piece and the radial piece is beneficial to improving the strength, the rigidity and the stability of the supporting structure, can meet the transportation scene with higher structural strength requirements of highways, seagoing and the like, improves the durability of the supporting structure and meets the long-distance transportation requirement.
The axial part and the radial part of the supporting structure are both of a multi-layer sleeve structure, so that the strength and the stability of the supporting structure can be enhanced, and the service life of the supporting structure can be prolonged; in the transportation process of the container for storing and transporting the ultralow-temperature liquefied gas, under the action of gravity, in order to avoid the axial instability phenomenon, stronger support is required in the radial direction, so that the radial part adopts a multi-layer sleeve structure so as to ensure that the support structure has better strength and stability. In addition, under the action of inertia force, the inner container 5 transmits force from the axial direction of the supporting part to the radial direction, so that the axial stress is reduced, and the stability of the structure is further improved.
In the transportation process, the conduction path of the heat at the fixed end of the low-temperature container is as follows: inner vessel 5→first axial inner tube 111→first collar 112→first radial inner tube 121→first radial outer tube 122→outer vessel 8; the design of the connection mode between the axial part and each pipe of the radial part in the supporting structure prolongs the conduction path of force and heat, improves the stability of the supporting structure, increases the thermal bridge of the supporting structure, and further improves the stability of the low-temperature container so as to meet the long-distance transportation requirement.
In some embodiments of the present invention, the second end of the first radially inner tube 121 and the second end of the first radially outer tube 122 are connected by a first plug 123.
In some embodiments of the invention, the first support 1 comprises the first axial member 11 and a plurality of sets of the first radial members 12 uniformly distributed on the first axial member 11.
In some embodiments of the invention, the first support 1 comprises a first axial member 11 and three sets of first radial members 12 uniformly distributed on the first axial member 11.
The plurality of groups of first radial members 12 are uniformly distributed on the first axial member 11, so that when inertial force is uniformly transmitted to the first radial members 12 from the first axial member 11 along all directions, the stress of a single group of first radial members 12 can be reduced, and the structural strength and stability of the first supporting part 1 can be improved; the support structure obtained when the three sets of first radial elements 12 are uniformly distributed on the first axial element 11 has a higher structural strength and stability.
As shown in fig. 2-3, in some embodiments of the invention, the first support structure further comprises a second support 2; the second support 2 comprises a second axial member 21 and at least one set of second radial members 22 distributed on the second axial member 21;
the second axial member 21 includes a fixed pipe 211, a second axial inner pipe 212, a second collar 213, and a second axial outer pipe 214, which are disposed in this order from the inside to the outside; the second collar 213 fits over the outer wall of the second axially inner tube 212; the second collar 213 and the second axially outer tube 214 are not in contact; a second through hole is arranged on the pipe wall of the second axial outer pipe 214;
the second radial member 22 includes a second radial inner tube 222 and a second radial outer tube 223 that are disposed in order from the inside to the outside; the first end of the second radial inner tube 222 passes through the second through hole and is fixedly connected to the second collar 213, and the second radial inner tube 222 is not in contact with the second through hole; the first end of the second radially outer tube 223 is fixedly connected to the second axially outer tube 214; a second end of the second radially inner tube 222 is connected to a second end of the second radially outer tube 223.
The first axial outer tube 113 is fixedly connected with the second axial inner tube 212; one end of the fixed tube 211 is connected with the first axial inner tube 111, and the other end of the fixed tube 211 is connected with one end of the second axial inner tube 212 away from the second radial member 22; since the first inner axial tube 111 and the first collar 112 and the second inner axial tube 212 and the second collar 213 are relatively slidable against friction, the first inner axial tube 111 and the second inner axial tube 212 need to be connected by the fixing tube 211 to achieve axial fixation of the first support structure.
In some embodiments of the present invention, the second end of the second radially inner tube 222 and the second end of the second radially outer tube 223 are connected by a second bulkhead 224;
during transportation, the conduction path of the fixed end heat of the cryogenic vessel includes two paths: (1) inner vessel 5→first axial inner tube 111→first collar 112→first radial inner tube 121→first radial outer tube 122→first axial outer tube 113→second axial inner tube 212→second collar 213→second radial inner tube 222→second radial outer tube 223→outer vessel 8; (2) inner vessel 5→first axial inner tube 111→fixed tube 211→second axial inner tube 212→second collar 213→second radial inner tube 222→second radial outer tube 223→outer vessel 8; the design of the supporting structure further prolongs two heat conduction paths, increases a heat bridge of the supporting structure, reduces heat leakage of the supporting structure, and further improves the stability of the low-temperature container.
In some specific embodiments, one end of the fixed tube 211 is fixedly connected to one end of the second axial inner tube 212, which is far away from the second radial member 22, and is folded in the opposite direction after extending a preset length in the axial direction, and is fixedly connected to the first axial inner tube 111; the preset length is 1/2-2/3 of the length of the first axial inner tube 111; the preset length of the fixing tube 211 is set to extend the heat conduction path, and is not limited to the above length, and may be adjusted according to circumstances.
In other embodiments of the present invention, the inner wall of the first axially outer tube 113 is fixedly connected to the outer wall of the second axially inner tube 212; the outer diameter of the portion of the second axial inner tube 212 that is fitted with the second collar 213 becomes smaller; the inner diameter of the first axial outer tube 113 is the same as the outer diameter of the second axial inner tube 212, and the two tubes are fixedly connected; in order to reduce the space occupied by the support structure, the outer diameter of the portion of the second axially inner tube 212 that is sleeved with the second collar 213 becomes smaller, so that the second support portion 2 having a similar size to the first support portion 1 can be obtained on the basis of ensuring the strength and stability of the support structure, to ensure that the space in the cryogenic container is more fully utilized, and that the volume of the inner container 5 is maximized.
In some embodiments of the invention, the second support 2 comprises a second axial member 21 and a plurality of sets of second radial members 22 evenly distributed over the second axial member 21.
In some particular embodiments of the invention, the second support 2 comprises a second axial member 21 and three sets of second radial members 22 uniformly distributed on the second axial member 21.
The plurality of groups of second radial members 22 are uniformly distributed on the second axial member 21, so that the second radial members 22 in all directions can be ensured when the inertial force is uniformly transmitted from the second axial member 21, and the stress of a single group of second radial members 22 can be reduced, and the structural strength and stability of the second supporting part 2 can be improved; the support structure obtained when the three sets of second radial elements 22 are uniformly distributed on the second axial element 21 has a higher structural strength and stability.
In other embodiments of the present invention, the second radial member 22 further comprises a first inner tube 221 disposed inside the second radial inner tube 222; one end of the first inner tube 221 is fixedly connected to the second collar 213, and the other end of the first inner tube 221 is connected to the second end of the second radial inner tube 222 and the second end of the second radial outer tube 223 through a second plug 224.
In some embodiments of the invention, as shown in fig. 5, the second bulkhead 224 includes a first support 2241, a first reverse-turn sleeve support 2242, and a first mezzanine pipe bulkhead 2243; the first support 2241 serves to further support the first inner pipe 221, the first reverse-folded sleeve support 2242 serves to further support the second radial outer pipe 223, and the connection of the first inner pipe 221, the second radial inner pipe 222, and the second radial outer pipe 223 is achieved through the first interlayer pipe blocking plate 2243; during transportation, axial instability is easy to occur due to the action of gravity, so that the first inner tube 221 is added on the radial part, and the phenomenon of external pressure instability in the axial direction can be effectively prevented; the first inner tube 221 is preferably a G10 tube, but is not limited thereto, and may be adjusted according to circumstances.
As shown in fig. 2 and 4, in some embodiments of the invention, the support structure further comprises a second support structure disposed at the sliding end of the cryogenic container; the second support structure comprises a first support 1.
In some embodiments of the invention, the second support structure further comprises a third support 3; the third support 3 comprises a third axial member 31 and at least one set of third radial members 32 distributed over the third axial member 31;
the third axial member 31 includes a third axial inner tube 311, a third collar 312, and a third axial outer tube 313, which are disposed in this order from the inside to the outside; the third collar 312 is sleeved on the outer wall of the third axial inner pipe 311; the third collar 312 and the third axially outer tube 313 are not in contact; a third through hole is arranged on the pipe wall of the third axial outer pipe 313;
the third radial member 32 includes a third radial inner tube 322 and a third radial outer tube 323 which are disposed in order from the inside to the outside; the first end of the third radial inner tube 322 passes through the third through hole and is fixedly connected to the third collar 312; the third radial inner tube 322 is not in contact with the third through hole; the first end of the third radial outer tube 323 passes through the third through hole and is fixedly connected to the third axial outer tube 313; a second end of the third radially inner tube 322 is connected to a second end of the third radially outer tube 323; the first axially outer tube 113 and the third axially inner tube 311 are connected.
In some embodiments of the present invention, the first axial outer tube 113 and the third axial inner tube 311 are connected by a fixed flange pin 4.
During transportation, the conduction path of the sliding end heat is as follows: inner vessel 5→first axial inner tube 111→first collar 112→first radial inner tube 121→first radial outer tube 122→first axial outer tube 113→third radial inner tube 322→third collar 312→third radial outer tube 323→outer vessel 8; the design of the connection mode between the axial part and each pipe of the radial part in the supporting structure prolongs the heat conduction path, increases the heat bridge of the supporting structure, reduces heat leakage, and further improves the stability of the low-temperature container so as to meet the long-distance transportation requirement.
In some embodiments of the invention, the third support 3 comprises a third axial member 31 and a plurality of sets of third radial members 32 uniformly distributed over the third axial member 31.
In some embodiments of the invention, the third support 3 comprises a third axial member 31 and three sets of third radial members 32 evenly distributed over the third axial member 31.
The multiple groups of third radial members 32, for example, three groups of third radial members 32 may be uniformly distributed on the third axial member 31, so that when inertial force is transmitted from the third axial member 31 to the third radial member 32, the force is uniformly transmitted to the third radial member 32 along each direction, thus reducing the stress of a single group of third radial members 32 and improving the structural strength and stability of the third supporting portion 3; the support structure obtained when the three sets of third radial elements 32 are uniformly distributed on the third axial element 31 has a higher structural strength and stability.
In some embodiments of the present invention, the third radial member 32 further comprises a second inner tube 321 disposed inside the third radial inner tube 322; one end of the second inner tube 321 is fixedly connected to the third collar 312, and the other end is connected to the second end of the third radial inner tube 322 and the second end of the third radial outer tube 323 through a third plug 324; the second inner tube 321 is preferably a G10 tube, but is not limited thereto, and may be adjusted according to circumstances.
In some embodiments of the invention, as shown in fig. 6, the third stopper 324 includes a second support 3241, a second reverse-turn sleeve support 3242, and a second interlayer tube stopper plate 3243; the second support 3241 serves to further support the second inner tube 321, and the second folded sleeve support 3242 serves to further support the third radial outer tube 323, and connection of the second inner tube 321, the third radial inner tube 322, and the third radial outer tube 323 is achieved through the second interlayer tube stopper plate 3243.
The plurality of groups of third radial members 32 are uniformly distributed on the third axial member 31, so that when inertial force is uniformly transmitted to each radial member from the axial member, the stress of a single group of radial members can be reduced, and the structural strength and stability of the third supporting part 3 can be further improved; the support structure obtained when the three sets of third radial elements 32 are uniformly distributed on the third axial element 31 has higher structural strength and stability; meanwhile, in order to avoid axial instability under the action of gravity in the transportation process, the second inner tube 321 is added on the radial part, so that the phenomenon of external pressure instability in the axial direction can be effectively prevented.
The present invention provides in a second aspect a cryogenic container for storing and transporting cryogenic liquefied gas, the cryogenic container comprising the support structure of the first aspect.
In some embodiments of the invention, the cryogenic vessel comprises a cold screen assembly disposed between inner vessel 5 and outer vessel 8; the cold screen assembly is connected to the inner vessel 5 and the outer vessel 8 by a support structure.
In some specific embodiments of the present invention, the main body of the shell is made of carbon steel, and the right end enclosure of the shell is made of carbon steel or stainless steel; in order to maximize the container of the liquid nitrogen container 6, the assembly is convenient, and the shell seal head adopts a nonstandard dish seal head.
In some embodiments of the invention, the cold shield assembly comprises a cold shield 7 and a liquid nitrogen container 6 connected; the liquid nitrogen container 6 is of a ring structure;
the liquid nitrogen container 6 is connected with the inner container 5 and the outer tank 8 through a first supporting structure; the cold screen 7 is connected to the inner container 5 and the outer tank 8 by a second support structure.
In one embodiment of the invention, as shown in fig. 1, the cryogenic vessel comprises an outer vessel 8, an inner vessel 5, and a cold screen assembly and support structure disposed between the inner vessel 5 and the outer vessel 8; the cold screen assembly is connected with the inner container 5 and the outer tank 8 through a supporting structure; the cold shield assembly comprises a liquid nitrogen container 6 and a cold shield 7 which are connected; the liquid nitrogen container 6 is arranged between the inner container 5 and the outer tank 8 at the fixed end; the liquid nitrogen container 6 is of an annular structure; the support structure includes a first support structure disposed at the fixed end of the container and a second support structure disposed at the sliding end.
The first support structure comprises a first support part 1 which is positioned between the inner container 5 and the liquid nitrogen container 6 and is connected with the inner container 5, and a second support part 2 which is positioned between the liquid nitrogen container 6 and the outer tank 8 and is connected with the outer tank 8; the first support part 1 is fixedly connected with the inner container 5 through a first axial inner tube 111, and the second support part 2 is connected with the outer tank 8 through a second axial outer tube 214 and a sandwich tube plug 9.
The first support 1 comprises a first axial member 11 and three groups of first radial members 12 uniformly distributed on the first axial member 11; the first axial member 11 includes a first axial inner tube 111, a first collar 112, and a first axial outer tube 113 that are disposed in this order from the inside to the outside; the first collar 112 is sleeved on the outer wall of the first axial inner tube 111; the first collar 112 and the first axial outer tube 113 are not in contact; a first through hole is arranged on the pipe wall of the first axial outer pipe 113; the first radial member 12 includes a first radial inner tube 121 and a first radial outer tube 122, which are disposed in order from inside to outside; the first end of the first radial inner tube 121 passes through the first through hole and is fixedly connected to the first collar 112, and the first radial inner tube 121 is not contacted with the first through hole; a first end of the first radially outer tube 122 is fixedly connected to the first axially outer tube 113; the second end of the first radially inner tube 121 and the second end of the first radially outer tube 122 are connected by a first plug 123;
the second support 2 comprises a second axial member 21 and three sets of second radial members 22 uniformly distributed on the second axial member 21; the second axial member 21 includes a fixed pipe 211, a second axial inner pipe 212, a second collar 213, and a second axial outer pipe 214, which are disposed in this order from the inside to the outside; the second collar 213 fits over the outer wall of the second axially inner tube 212; the second collar 213 and the second axially outer tube 214 are not in contact; a second through hole is arranged on the pipe wall of the second axial outer pipe 214; the second radial member 22 includes a first inner tube 221, a second inner radial tube 222, and a second outer radial tube 223, which are disposed in order from the inside to the outside; the first end of the second radial inner tube 222 passes through the second through hole and is fixedly connected to the second collar 213, and the second radial inner tube 222 and the second through hole are not in contact; the first end of the second radially outer tube 223 is fixedly connected to the second axially outer tube 214; the second end of the second radial inner tube 222 and the second end of the second radial outer tube 223 are connected by a second plug 224 forming a first support structure; the second bulkhead 224 includes a first support 2241, a first reverse-turn sleeve support 2242, and a first interlayer tube bulkhead 2243; the first support 2241 serves to further support the first inner pipe 221, and the first reverse-folded sleeve support 2242 serves to further support the second radial outer pipe 223, and the connection of the first inner pipe 221, the second radial inner pipe 222, and the second radial outer pipe 223 is achieved through the first interlayer pipe blocking plate 2243.
The first axial outer tube 113 and the second axial inner tube 212 both penetrate through the inner ring of the liquid nitrogen container 6, the inner diameter of the first axial outer tube 113 is the same as the outer diameter of the second axial inner tube 212, the first axial outer tube 113 and the second axial inner tube 212 are fixedly connected together, and the double-layer sleeve structure can play a role in fixing and supporting the liquid nitrogen container 6; the outer diameter of the portion of the second axial inner tube 212 which is sleeved with the second collar 213 becomes smaller, so that the sizes of the first support part 1 and the second support part 2 are similar on the basis of ensuring the strength and the stability of the support structure, thereby reducing the space occupied by the support structure and maximizing the volume of the inner container 5; one end of the fixed tube 211 is fixedly connected to one end of the second axial inner tube 212, which is far away from the second radial member 22, is folded in the opposite direction after extending a preset length in the axial direction, and is fixedly connected to the first axial inner tube 111; the preset length is 2/3 of the length of the first axial inner tube 111; therefore, the liquid nitrogen container 6 can be fixed, the occupied space of the supporting structure can be reduced, and the volume of the inner container 5 is maximized.
The second support structure comprises a first support part 1 which is positioned between the inner container 5 and the cold screen 7 and is connected with the inner container 5, and a third support part 3 which is positioned between the cold screen 7 and the outer tank 8 and is fixedly connected with the outer tank 8;
the third support 3 comprises a third axial member 31 and three groups of third radial members 32 uniformly distributed on the third axial member 31; the third axial member 31 includes a third axial inner tube 311, a third collar 312, and a third axial outer tube 313, which are disposed in this order from the inside to the outside; the third collar 312 is sleeved on the outer wall of the third axial inner pipe 311; the third collar 312 and the third axially outer tube 313 are not in contact; a third through hole is arranged on the pipe wall of the third axial outer pipe 313;
the third radial member 32 includes a second inner tube 321, a third radial inner tube 322, and a third radial outer tube 323, which are sequentially disposed from inside to outside; the first end of the third radial inner tube 322 passes through the third through hole and is fixedly connected to the third collar 312, and the third radial inner tube 322 is not in contact with the third through hole; the first end of the third radial outer tube 323 is fixedly connected to the third axial outer tube 313; the second end of the third radial inner tube 322 and the second end of the third radial outer tube 323 are connected by a third plug 324, forming a third support 3; wherein the third plug 324 includes a second support 3241, a second reverse-turn sleeve support 3242, and a second interlayer tube plug plate 3243; the second support member 3241 serves to further support the second inner tube 321, the second folded sleeve support member 3242 serves to further support the third radial outer tube 323, and connection of the second inner tube 321, the third radial inner tube 322, and the third radial outer tube 323 is achieved through the second interlayer tube stopper plate 3243; the first axial outer pipe 113 is connected with the third axial inner pipe 311 through a fixed flange bolt 4 arranged at the left end socket of the cold screen 7, the first axial inner pipe 111 at the sliding end is connected with the left end socket of the inner container 5, and the third axial outer pipe 313 is connected with the left end socket of the outer tank 8; in this way, it is ensured that the second support structure is fixed inside the outer tank 8, simultaneously functioning as a fixed cold screen 7.
In addition, in the second supporting structure of the sliding end, the first collar 112 and the first axial inner tube 111 can relatively slide under the condition of overcoming friction force, and the first collar 112 and the first axial outer tube 113 are not in contact, so that limit constraint is not added between the second supporting structure and the left end socket of the inner container 5, the problem of releasing the cold shrinkage displacement between the inner tank 8 and the outer tank 8 under the cold medium filling working condition can be solved, and excessive temperature difference stress caused by over constraint is avoided.
According to the invention, the supporting structures are arranged at the fixed end and the sliding end, so that the strength and the stability of the supporting structure are enhanced, meanwhile, the heat conduction path of heat is prolonged through the design of the supporting structure, the heat bridge of the supporting structure is increased, the heat leakage power of the supporting structure is reduced, the heat invasion is reduced, the reliability of the container is further improved, and the long-distance transportation requirement can be met.
It is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of additional identical elements in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A support structure, characterized by an inner vessel (5) and an outer vessel (8) for connecting or securing a cryogenic container; the support structure comprises a first support structure arranged at the fixed end of the low-temperature container;
the first support structure comprises a first support part (1) and a second support part (2);
the first support (1) comprises a first axial member (11) and at least one set of first radial members (12) distributed on the first axial member (11);
the first axial member (11) comprises a first axial inner pipe (111), a first collar (112) and a first axial outer pipe (113) which are sequentially arranged from inside to outside; the first lantern ring (112) is sleeved on the outer wall of the first axial inner tube (111); the first collar (112) and the first axial outer tube (113) are not in contact; a first through hole is formed in the pipe wall of the first axial outer pipe (113);
the first radial member (12) comprises a first radial inner pipe (121) and a first radial outer pipe (122) which are sequentially arranged from inside to outside; the first end of the first radial inner pipe (121) passes through the first through hole and is fixedly connected to the first lantern ring (112), and the first radial inner pipe (121) is not contacted with the first through hole; a first end of the first radial outer tube (122) is fixedly connected to the first axial outer tube (113); a second end of the first radially inner tube (121) is connected to a second end of the first radially outer tube (122);
the second support (2) comprises a second axial member (21) and at least one set of second radial members (22) distributed on the second axial member (21);
the second axial member (21) comprises a fixed pipe (211), a second axial inner pipe (212), a second collar (213) and a second axial outer pipe (214) which are sequentially arranged from inside to outside; the second lantern ring (213) is sleeved on the outer wall of the second axial inner pipe (212); -said second collar (213) and said second axially outer tube (214) are not in contact; a second through hole is formed in the pipe wall of the second axial outer pipe (214);
the second radial member (22) comprises a second radial inner pipe (222) and a second radial outer pipe (223) which are sequentially arranged from inside to outside; the first end of the second radial inner tube (222) passes through the second through hole and is fixedly connected to the second lantern ring (213), and the second radial inner tube (222) is not contacted with the second through hole; a first end of the second radially outer tube (223) is fixedly connected to the second axially outer tube (214); a second end of the second radially inner tube (222) is connected to a second end of the second radially outer tube (223);
the first axial outer tube (113) is fixedly connected with the second axial inner tube (212); one end of the fixed pipe (211) is connected with the first axial inner pipe (111), and the other end of the fixed pipe (211) is connected with one end of the second axial inner pipe (212) far away from the second radial piece (22).
2. The support structure according to claim 1, characterized in that the first support (1) comprises the first axial member (11) and a plurality of groups of the first radial members (12) uniformly distributed on the first axial member (11).
3. The support structure according to claim 1, characterized in that the second support (2) comprises the second axial member (21) and a plurality of sets of the second radial members (22) uniformly distributed on the second axial member (21).
4. The support structure of claim 1, further comprising a second support structure disposed at a sliding end of the cryogenic vessel; the second support structure comprises a first support (1).
5. The support structure according to claim 4, characterized in that the second support structure further comprises a third support (3); the third support (3) comprises a third axial member (31) and at least one set of third radial members (32) distributed on the third axial member (31);
the third axial member (31) comprises a third axial inner pipe (311), a third lantern ring (312) and a third axial outer pipe (313) which are sequentially arranged from inside to outside; the third lantern ring (312) is sleeved on the outer wall of the third axial inner pipe (311); -the third collar (312) and the third axial outer tube (313) are not in contact; a third through hole is formed in the pipe wall of the third axial outer pipe (313);
the third radial member (32) comprises a third radial inner pipe (322) and a third radial outer pipe (323) which are sequentially arranged from inside to outside; the first end of the third radial inner tube (322) passes through the third through hole and is fixedly connected to the third lantern ring (312), and the third radial inner tube (322) is not contacted with the third through hole; the first end of the third radial outer tube (323) is fixedly connected to the third axial outer tube (313); a second end of the third radial inner tube (322) is connected to a second end of the third radial outer tube (323);
the first axial outer tube (113) and the third axial inner tube (311) are fixedly connected.
6. The support structure according to claim 5, characterized in that said third support (3) comprises said third axial member (31) and a plurality of groups of said third radial members (32) uniformly distributed on said third axial member (31).
7. A cryogenic vessel for storing and transporting cryogenic liquefied gas, the cryogenic vessel comprising the support structure of any one of claims 1-6.
8. Cryogenic container according to claim 7, characterized in that it further comprises a cold screen assembly arranged between the inner container (5) and the outer tank (8); the cold screen assembly is connected with the inner container (5) and the outer tank (8) through the supporting structure.
9. Cryogenic container according to claim 8, characterized in that the cold screen assembly comprises a cold screen (7) and a liquid nitrogen container (6) connected; the liquid nitrogen container (6) is arranged at one side of the fixed end of the low-temperature container; the liquid nitrogen container (6) is of a ring structure.
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| CN102997034A (en) * | 2011-09-09 | 2013-03-27 | 南通中集罐式储运设备制造有限公司 | Low-temperature storage-transport container |
| CN105526494A (en) * | 2015-12-01 | 2016-04-27 | 中国石油大学(北京) | Axial support device of liquefied natural gas horizontal tank |
| CN211010765U (en) * | 2019-11-20 | 2020-07-14 | 大连理工大学 | Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular |
| CN218441795U (en) * | 2022-09-28 | 2023-02-03 | 南通中集能源装备有限公司 | Low temperature container and supporting structure thereof |
| KR102513987B1 (en) * | 2022-05-06 | 2023-03-27 | 에스탱크엔지니어링(주) | Storage tank for liquefied hydrogen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6847426B2 (en) * | 2019-01-21 | 2021-03-24 | 本田技研工業株式会社 | Core structure and its manufacturing method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997034A (en) * | 2011-09-09 | 2013-03-27 | 南通中集罐式储运设备制造有限公司 | Low-temperature storage-transport container |
| CN105526494A (en) * | 2015-12-01 | 2016-04-27 | 中国石油大学(北京) | Axial support device of liquefied natural gas horizontal tank |
| CN211010765U (en) * | 2019-11-20 | 2020-07-14 | 大连理工大学 | Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular |
| KR102513987B1 (en) * | 2022-05-06 | 2023-03-27 | 에스탱크엔지니어링(주) | Storage tank for liquefied hydrogen |
| CN218441795U (en) * | 2022-09-28 | 2023-02-03 | 南通中集能源装备有限公司 | Low temperature container and supporting structure thereof |
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