CN114777009A - Supporting structure for movably connecting inner and outer pillars of vacuum double-layer liquid hydrogen spherical tank - Google Patents

Supporting structure for movably connecting inner and outer pillars of vacuum double-layer liquid hydrogen spherical tank Download PDF

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Publication number
CN114777009A
CN114777009A CN202210371519.5A CN202210371519A CN114777009A CN 114777009 A CN114777009 A CN 114777009A CN 202210371519 A CN202210371519 A CN 202210371519A CN 114777009 A CN114777009 A CN 114777009A
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China
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tank
support
spherical
supporting
liquid hydrogen
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CN202210371519.5A
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CN114777009B (en
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谢福寿
余帅
厉彦忠
马原
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Xian Jiaotong University
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Xian Jiaotong University
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    • 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
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • 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
    • F17C13/08—Mounting arrangements for 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • 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
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2203/014—Suspension 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/0153—Details of mounting arrangements
    • 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
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • 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

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  • 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

A supporting structure for movably connecting inner and outer struts of a large vacuum double-layer liquid hydrogen spherical tank comprises a supporting structure consisting of the inner strut and an outer supporting structure, wherein the spherical inner tank is suspended in the cavity of the outer tank through the support of the inner strut, the inner strut is connected to the outer supporting structure, the outer supporting structure supports the outer tank and the spherical inner tank, and a pull rod is connected between the adjacent outer supporting structures; a plurality of groups of supporting structures are arranged on the spherical inner tank and the spherical outer tank, each group of supporting structures consists of an inner supporting column and an outer supporting structure, the inner supporting column comprises a half-dome cover, an inner upper supporting column, an inner lower supporting column and an upper and lower connecting structure, the half-dome cover is connected to the top of the inner upper supporting column, and the inner upper supporting column is connected with the inner lower supporting column through the upper and lower connecting structure; the inner lower support column adopts a double-sleeve structure, and the inner lower support column inner pipe, the inner lower support column outer pipe and the outer support structure are connected through a connecting shaft; the invention increases the degree of freedom of the supporting structure and improves the heat insulation performance and the resistance to thermal expansion and cold contraction deformation of the large-scale liquid hydrogen spherical tank.

Description

Supporting structure for movably connecting inner pillar and outer pillar of vacuum double-layer liquid hydrogen spherical tank
Technical Field
The invention relates to the technical field of large-scale liquid hydrogen storage, in particular to a supporting structure for movably connecting inner and outer pillars of a vacuum double-layer liquid hydrogen spherical tank.
Background
For China, the development of a large liquid hydrogen vacuum multilayer heat insulation spherical tank is still in an exploration stage, and compared with a conventional liquid single spherical tank, the liquid hydrogen double-layer spherical tank has the remarkable requirement of large temperature difference heat insulation, so that in order to reduce the evaporation rate of liquid hydrogen, the liquid hydrogen spherical tank is generally in a vacuum double-layer spherical tank structure with a heat insulation material, and the connection between the double-layer spherical tank and the ground is one of the most central key technologies.
For a large-scale liquid hydrogen spherical tank, a support structure not only needs to have high stability, but also needs to have good heat insulation performance, and the specific support structure form is rarely reported. The support structure is set to be composed of an inner support and an outer support, wherein the inner support plays a role in supporting the inner tank, and the outer support plays a role in supporting the outer tank. Through theoretical calculation and analysis, the heat leakage quantity of the external through the inner support is often more than 30% of the total heat leakage quantity of the liquid hydrogen storage tank body, so that how to effectively reduce the heat leakage quantity of the supporting structure is one of the key problems to be solved urgently in the development process of the vacuum double-layer liquid hydrogen spherical tank.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a support structure for movably connecting an inner pillar and an outer pillar of a vacuum double-layer liquid hydrogen spherical tank, which increases the freedom degree of the support structure and improves the external load resistance; the heat leaked into the spherical tank from the supporting structure is obviously reduced, so that the heat insulation performance of the large-scale liquid hydrogen spherical tank is greatly improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a supporting structure for movably connecting inner and outer struts of a large-scale vacuum double-layer liquid hydrogen spherical tank comprises a supporting structure consisting of inner struts 3 and outer supporting structures 4, wherein the spherical inner tank 1 is supported and suspended in a cavity of an outer tank 2 through the inner struts 3, the inner struts 3 are connected to the outer supporting structures 4, the outer supporting structures 4 support the outer tank 2 and the spherical inner tank 1, and pull rods 5 are connected between the adjacent outer supporting structures 4; heat insulation materials are filled between the interlayers of the inner tank 1 and the outer tank 2, and the interlayers are vacuumized to carry out heat insulation;
be provided with a plurality of groups bearing structure on globular inner tank 1, outer jar 2, every group bearing structure comprises an inner support post 3 and an outer bearing structure 4, and inner support post 3 includes half dome lid 31, interior upper support post 32, interior lower prop 33 and upper and lower connection structure, and upper support post 32 top including half dome lid 31 is connected, and interior upper support post 32 and interior lower prop 33 are connected through upper and lower connection structure.
The outer supporting structure 4 comprises an outer support column 42 and an outer wall supporting plate 41, the outer wall supporting plate 41 matched with the outer wall contour of the outer tank 2 is arranged at the top of the outer support column 42, and the top of the outer support column 42 is fixedly connected to the outer wall of the outer tank 2 through the outer wall supporting plate 41.
The inner lower support 33 adopts a double-sleeve structure and sequentially comprises an inner lower support inner pipe 332 and an inner lower support outer pipe 331 from inside to outside, the lower part of the inner upper support 32 is connected with the inner lower support outer pipe 331 through an upper and lower connecting structure, a heat insulating material 7 is arranged between the upper and lower connecting structure for heat insulation, and the inner upper support 32 is connected with the inner lower support outer pipe 331 through a flange 8; the inner lower support inner pipe 332 and the inner lower support outer pipe 331 are provided with circular through holes at the upper part and the lower part respectively, the outer support 42 is also provided with an upper through hole at the same height, the inner lower support inner pipe 332 is connected with the outer support 42 through an upper connecting shaft 9 traversing the upper through hole, and the inner lower support outer pipe 331 is connected with the inner lower support inner pipe 332 through a lower connecting shaft 10 traversing the lower through hole.
The inner lower support 33 is not limited to a double-casing structure, and more casing combinations can be adopted according to specific actual working conditions.
Two pull rods 5 are arranged between two adjacent outer supporting structures 4 in a staggered and crossed mode, the two pull rods 5 are not at crossed positions, two ends of each pull rod 5 are connected with the lug plates 52, and the lug plates 52 are connected with the outer columns 42.
The outer support 42 is connected with the spherical tank base 12, and the spherical tank base 12 is fixed with the hardened ground.
The outer support 42, the outer wall supporting plate 41, the pull rod 5, the lug plate 52 and the outer tank 2 adopt low alloy steel with high strength; the inner upper supporting column 32 is made of the same material as the spherical inner tank 1 and is made of austenitic stainless steel; the inner lower support 33, the upper connecting shaft 9 and the lower connecting shaft 10 have high strength, and the inner lower support inner tube 332 and the inner lower support outer tube 331 are made of high-strength low alloy steel; the heat insulating material 7 in the upper and lower connecting structure is made of a composite material with low heat conductivity coefficient.
The upper part of the inner upper support column 32 and the spherical inner tank 1 adopt an equator tangent direct connection mode, and adopt direct connection, supporting plate connection and straight cylinder type connection.
The multiple groups of supporting structures are rotationally and symmetrically distributed relative to the vertical central axis of the spherical inner tank 1.
The horizontal plane passing through the bottom of the half dome cover 31 of the inner pillar 3 and the horizontal plane passing through the center of the spherical inner tank 1 are all on the same horizontal plane.
The invention has the beneficial effects that:
under the precondition of ensuring the structural strength, stability and simplicity of implementation and operation of the spherical tank, the inner support column is designed into a half-dome cover, an inner upper support column, an inner lower support column and an upper and lower connecting structure four-part assembly, the inner lower support column is innovatively designed into a double-sleeve structure from a traditional single-tube structure, and a supporting point is designed on the outer support column; through the combined action of the inner lower support double-sleeve structure and the upper and lower support heat insulation connecting structure, the heat conduction path of the supporting structure is greatly prolonged, the heat conduction resistance of the supporting structure is increased, and the heat conduction quantity entering the inner tank through the supporting structure is obviously reduced, so that the overall heat insulation performance of the liquid hydrogen spherical tank is improved; meanwhile, the supporting points of the inner support column are arranged on the outer support column and are connected with each other through a shaft, so that the degree of freedom of the inner tank is increased, and the overall external load resistance of the liquid hydrogen spherical tank and the deformation offset capacity caused by expansion with heat and contraction with cold are improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial schematic view of an outer post and a pull rod according to the present invention.
Fig. 3 is a partial schematic view of the inner and outer support structures of the present invention.
Fig. 4 is an enlarged view of a portion a in fig. 3.
Fig. 5 is an enlarged view of fig. 3 at B.
Fig. 6 is an enlarged view of fig. 3 at C.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Referring to fig. 1 and 2, the support structure for movably connecting the inner and outer struts of the large-scale vacuum double-layer liquid hydrogen spherical tank comprises a support structure consisting of an inner strut 3 and an outer support structure 4, wherein the spherical inner tank 1 is supported and suspended in the cavity of the outer tank 2 through the inner strut 3, and heat insulation materials are filled between the spherical inner tank 1 and the outer tank 2 and are pumped into a vacuum state to play a heat insulation role; the heat insulation material adopts multilayer heat insulation materials or pearlifes; the inner support 3 is connected on an outer support structure 4, the outer support structure 4 supports the outer tank 2 and the spherical inner tank 1, and a pull rod 5 is connected between adjacent outer support structures 4;
a plurality of groups of supporting structures are arranged on the spherical inner tank 1 and the spherical outer tank 2, each group of supporting structures is composed of an inner support column 3 and an outer supporting structure 4, referring to fig. 3, fig. 4 and fig. 5, the inner support column 3 comprises a half-dome cover 31, an inner upper support column 32, an inner lower support column 33 and an upper-lower connecting structure, the half-dome cover 31 is connected to the top of the inner upper support column 32, and the inner upper support column 32 and the inner lower support column 33 are connected through the upper-lower connecting structure.
Referring to fig. 4, the outer supporting structure 4 includes an outer pillar 42 and an outer wall supporting plate 41, the outer pillar 42 plays a role of supporting the outer tank 2 and the spherical inner tank 1, the outer wall supporting plate 41 matched with the outer wall profile of the outer tank 2 is arranged at the top of the outer pillar 42, the top of the outer pillar 42 is fixedly connected to the outer wall of the outer tank 2 through the outer wall supporting plate 41, and the outer wall supporting plate 41 is fixed with the outer tank 2 and the outer pillar 42 through welding.
As shown in fig. 3, 4, 5 and 6, the inner lower prop 33 adopts a double-sleeve structure, and comprises an inner lower prop inner tube 332 and an inner lower prop outer tube 331 from inside to outside in sequence, the lower part of the inner upper prop 32 is connected with the inner lower prop outer tube 331 through an upper and lower connecting structure, a heat insulating material 7 is arranged between the upper and lower connecting structure for heat insulation, and the inner upper prop 32 is connected with the inner lower prop outer tube 331 through a flange 8 and a first bolt 6; the inner lower support inner pipe 332 and the inner lower support outer pipe 331 are provided with circular through holes at the upper part and the lower part respectively, the outer support 42 is also provided with an upper through hole at the same height, the inner lower support inner pipe 332 is connected with the outer support 42 through an upper connecting shaft 9 traversing the upper through hole, and the inner lower support outer pipe 331 is connected with the inner lower support inner pipe 332 through a lower connecting shaft 10 traversing the lower through hole.
As shown in fig. 2 and 4, two pull rods 5 are arranged between two adjacent outer support structures 4 in a staggered and crossed manner, the two pull rods 5 do not have crossed positions, two ends of each pull rod 5 are connected with lug plates 52 through second bolts 51, and the lug plates 52 are connected with the outer columns 42 in a welding manner.
Referring to fig. 6, the outer leg 42 is connected to the spherical tank base 12 by welding or bolting, and the spherical tank base 12 is fixed to the hardened ground by the third bolt 11.
The outer post 42, the outer wall supporting plate 41, the pull rod 5, the second bolt 51, the lug plate 52 and the outer tank 2 are made of low alloy steel with high strength; the inner upper supporting column 32 is made of the same material as the spherical inner tank 1, requires low temperature resistance and is made of austenitic stainless steel; the inner lower support 33, the upper connecting shaft 9 and the lower connecting shaft 10 mainly play a supporting role and require high strength, and the inner lower support inner tube 332 and the inner lower support outer tube 331 are made of low alloy steel with high strength; the heat insulating material 7 in the upper and lower connecting structure is made of composite material with low heat conductivity coefficient, such as glass fiber reinforced plastic.
As shown in fig. 1 and 4, the upper portion of the inner upper pillar 32 and the spherical inner tank 1 are directly connected by adopting an equator tangent mode, and are connected by adopting a direct connection mode, a supporting plate connection mode and a straight cylinder connection mode, the stress conditions of the direct connection mode and the straight cylinder connection mode are better, and the connection modes are all completed by adopting welding.
Multiunit bearing structure is rotational symmetry for globular inner tank 1's vertical central axis and distributes, and the quantity that bearing structure set up is more, and globular inner tank 1 can be more stable, and the ability of resisting extreme climate condition is stronger more, nevertheless can lead to leaking into globular inner tank 1's heat from the external world and increase, and the calculation shows that select for use many spinal branchs post can satisfy globular inner tank 1's stability requirement.
As shown in fig. 1 and 2, the horizontal plane passing through the bottom of the half dome 31 of the inner column 3 and the horizontal plane passing through the center of the spherical inner tank 1 are all on the same horizontal plane.
Firstly, on the premise of ensuring the structural strength, the stability and the simplicity of implementation and operation, the inner lower support 33 is designed into a double-sleeve structure, the structure greatly prolongs the heat conduction path of the support structure, increases the heat conduction resistance of the support structure, and obviously reduces the heat conduction quantity entering the spherical inner tank 1 through the support structure; meanwhile, the inner support 3 is positioned in a multilayer heat-insulating high-vacuum environment, the convection heat transfer and the radiation heat transfer of the support structure are effectively reduced, and therefore the overall heat-insulating performance of the liquid hydrogen spherical tank is improved.
The foregoing embodiments are merely illustrative of the principles and features of this invention, and the invention is not limited to the above embodiments, but rather, various changes and modifications can be made without departing from the spirit and scope of the invention, and all changes and modifications that can be directly derived or suggested to one skilled in the art from the disclosure of this invention are to be considered as within the scope of the invention.

Claims (10)

1. The utility model provides a bearing structure of inside and outside pillar swing joint of double-deck liquid hydrogen spherical tank in large-scale vacuum, includes the bearing structure who comprises inner support post (3) and outer bearing structure (4), its characterized in that: the spherical inner tank (1) is supported and suspended in the cavity of the outer tank (2) through the inner support column (3), the inner support column (3) is connected to the outer support structure (4), the outer support structure (4) supports the outer tank (2) and the spherical inner tank (1), and heat insulation materials are filled between interlayers of the inner tank (1) and the outer tank (2) and vacuumized for heat insulation; a pull rod (5) is connected between the adjacent outer supporting structures (4);
be provided with a plurality of groups bearing structure on globular inner tank (1), outer jar (2), every group bearing structure comprises an inner support post (3) and an outer bearing structure (4), and inner support post (3) are including half dome lid (31), interior upper prop (32), interior lower prop (33) and upper and lower connection structure, and half dome lid (31) are connected at interior upper prop (32) top, and interior upper prop (32) and interior lower prop (33) are through upper and lower connection structure connection.
2. The support structure for movably connecting the inner pillar and the outer pillar of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 1, characterized in that: the outer supporting structure (4) comprises an outer support column (42) and an outer wall supporting plate (41), the outer wall supporting plate (41) matched with the outer wall profile of the outer tank (2) is arranged at the top of the outer support column (42), and the top of the outer support column (42) is fixedly connected to the outer wall of the outer tank (2) through the outer wall supporting plate (41).
3. The support structure for movably connecting the inner pillar and the outer pillar of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 2, characterized in that: the inner lower strut (33) adopts a double-sleeve structure and sequentially comprises an inner lower strut inner tube (332) and an inner lower strut outer tube (331) from inside to outside, the lower part of the inner upper strut (32) is connected with the inner lower strut outer tube (331) through an upper and lower connecting structure, a heat insulating material (7) is arranged between the upper and lower connecting structure for heat insulation, and the inner upper strut (32) is connected with the inner lower strut outer tube (331) through a flange (8); the inner lower support inner pipe (332) and the inner lower support outer pipe (331) are provided with circular through holes at the upper part and the lower part respectively, the outer support (42) is also provided with an upper through hole at the same height, the inner lower support inner pipe (332) is connected with the outer support (42) through an upper connecting shaft (9) traversing the upper through hole, and the inner lower support outer pipe (331) is connected with the inner lower support inner pipe (332) through a lower connecting shaft (10) traversing the lower through hole.
4. The support structure for movably connecting the inner pillar and the outer pillar of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 3, characterized in that: the inner lower support (33) is not limited to two sleeves, the inner upper support (32) is not limited to a single sleeve, and the number of sleeves depends on specific working conditions.
5. The supporting structure for movably connecting the inner pillar and the outer pillar of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 2, characterized in that: two pull rods (5) are arranged between two adjacent outer supporting structures (4) in a staggered and crossed mode, the two pull rods (5) are not intersected, two ends of each pull rod (5) are connected with the lug plates (52), and the lug plates (52) are connected with the outer columns (42).
6. The supporting structure for movably connecting the inner pillar and the outer pillar of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 2, characterized in that: the outer support (42) is connected with the spherical tank base (12), and the spherical tank base (12) is fixed with the hardened ground.
7. The support structure for the movable connection of the inner and outer pillars of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 2, 3 or 5, wherein: the outer support (42), the outer wall supporting plate (41), the pull rod (5), the lug plate (52) and the outer tank (2) are made of low alloy steel with high strength; the inner upper strut (32) is made of the same material as the spherical inner tank (1) and is made of austenitic stainless steel; the inner lower support (33), the upper connecting shaft (9) and the lower connecting shaft (10) have high strength, and the inner lower support inner tube (332) and the inner lower support outer tube (331) are made of low alloy steel with high strength; the heat insulating material (7) in the upper and lower connecting structures is made of composite material with low heat conductivity coefficient.
8. The supporting structure for the movable connection of the inner and outer pillars of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 1, characterized in that: the upper part of the inner upper support column (32) is directly connected with the spherical inner tank (1) in an equator tangent mode by adopting direct connection, supporting plate connection or straight cylinder connection.
9. The supporting structure for the movable connection of the inner and outer pillars of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 1, characterized in that: the multiple groups of supporting structures are rotationally and symmetrically distributed relative to the vertical central axis of the spherical inner tank (1).
10. The supporting structure for the movable connection of the inner and outer pillars of the large-scale vacuum double-layer liquid hydrogen spherical tank according to claim 1, characterized in that: the horizontal plane passing through the bottom of the half dome cover (31) of the inner pillar (3) and the horizontal plane passing through the center of the spherical inner tank (1) are on the same horizontal plane.
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