CN114962983A

CN114962983A - Storage container for storing liquefied gas

Info

Publication number: CN114962983A
Application number: CN202210745950.1A
Authority: CN
Inventors: 魏颖; 陈世福; 冯宪高; 何炜
Original assignee: China Pacific Maritime Technology Shanghai Co ltd
Current assignee: Zhongtai Energy Technology Shanghai Co ltd; Sinopec Engineering Inc
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-08-30
Anticipated expiration: 2042-06-29
Also published as: CN114962983B

Abstract

The invention discloses a storage container for storing liquefied gas. The wall of the storage container comprises at least two sections, and the two adjacent sections are connected through a connecting assembly. The connecting assembly comprises a connecting main body and two first connecting pieces. The connecting body is positioned between the outer layer structures of the two adjacent sections, the two first connecting pieces are respectively abutted against the two adjacent sections, the first connecting pieces extend through the connecting body along the thickness direction, the outer ends of the first connecting pieces are directly or indirectly connected with the outer layer structures, and the inner ends of the first connecting pieces are directly or indirectly connected with the inner layer structures. The connecting component provided by the invention also has the configuration compatible with other structures such as cables and the like, so that the connecting component can form part of the structure of a multifunctional integrated module.

Description

Storage container for storing liquefied gas

Technical Field

The invention relates to the technical field of Liquefied Natural Gas (LNG) cryogenic storage devices, in particular to a storage container for storing liquefied gas.

Background

Liquefied Natural Gas (LNG) has been the first choice of energy for petroleum substitution due to its advantages of being green, environment-friendly and efficient, and has become one of the most rapidly developing energy industries in the world. With the rapid development of economy and the continuous improvement of the requirement on environmental management in China, the application and development of LNG are more and more emphasized by all parties, and particularly under the condition of frequent haze weather, the importance of LNG is more and more prominent, thereby causing the rapid increase of the demand of the society on clean energy. LNG is one of the key directions for the development of clean energy in China in the future.

The LNG receiving station mainly comprises dock unloading, LNG storage, process treatment and export, and the LNG storage tank which has the storage task has the longest construction period, the most advanced technology and the most difficult point in the engineering construction process, and is always managed as a critical path of the whole engineering. And the structural form and the scientific and technological development of the LNG storage tank are also important concerns of people in the same industry at home and abroad.

In order to achieve production, installation and subsequent maintenance and replacement of the storage tank, it is currently the trend in the art to provide the walls of the storage tank as modules, which are fixed together by connecting means. However, the arrangement of the existing connecting device and the arrangement of the wall part matched with the connecting device are simple, various requirements in production cannot be met, other functions can not be compatible while firm connection is provided for each module, and replacement and maintenance are not convenient for a maintainer.

On the other hand, the joint relationship between the various layers of the walls of existing tanks also needs to be optimized. There is a need for optimization to allow easy removal and replacement of specific layers while maintaining wall stability.

Thus, there is a need to provide a storage vessel for storing liquefied gas and a method of assembling the same to at least partially address the above-mentioned problems.

Disclosure of Invention

The object of the invention is to provide a storage vessel for storing liquefied gas, the walls of which are connected by modular segments via connecting assemblies, and a method of assembling the same. According to the invention, the connecting assembly comprises the connecting main body, the first connecting piece and other structures, and can realize stable connection of adjacent sections, and is easy to disassemble and maintain subsequently.

Meanwhile, the connecting component provided by the invention also has the configuration of being compatible with other structures such as cables and the like, so that the connecting component can form a partial structure of a multifunctional integrated module. On the other hand, the various modules of the wall of the storage container according to the invention also have a preferred configuration, which enables simultaneous sealing, insulation of the liquid storage and sufficient support strength of the storage container itself. The invention also provides various preferred arrangements of the thickness, the specific structure, the connection means, etc. of the individual functional layers of the individual modules of the wall of the storage container. The invention further provides an optimal connection mode among different layers, so that the disassembly and the replacement of a specific layer can be conveniently realized on the premise of ensuring the stability of the wall.

According to one aspect of the present invention, there is provided a storage vessel for storing liquefied gas, the wall of the storage vessel comprising, in its direction of extension, at least two sections, each section comprising an inner layer structure and an outer layer structure superposed in the thickness direction of the wall, adjacent two of the at least two sections being connected between them at a connection region by a connection assembly, characterized in that the connection assembly comprises:

a connecting body positioned between the outer skin structures of two adjacent segments;

two first connecting pieces, two first connecting pieces abut against respectively two adjacent sections, first connecting piece is followed the thickness direction extends and runs through the connector body, and the outer end of first connecting piece directly or indirectly with outer layer structure links to each other, the inner of first connecting piece directly or indirectly with inner layer structure links to each other.

In one embodiment, the connecting assembly further comprises at least one fixing member located inside the connecting body, and the inner end of each first connecting member is fixedly connected to the inner layer structure via the at least one fixing member.

In one embodiment, the at least one fixture includes:

a first fixing member positioned between the outer structures of the two adjacent sections, an inner end of each first connecting member being locked to the first fixing member;

a second securing member secured between the respective inner layer structures of two adjacent segments;

and, the connecting assembly further includes a second connecting member configured to connect the first fixing member and the second fixing member.

In one embodiment, the first connecting member is a bolt, and the connecting assembly further includes a pre-buried plate positioned outside the outer structure, a nut member is fixedly arranged on an inner side surface of the pre-buried plate, and an outer end of the first connecting member is locked by the nut member.

In one embodiment, the second connecting member is a stud, the first fixing member and the second fixing member are both provided with a central through hole extending along the axial direction of the stud, and the second connecting member penetrates through the central through holes of the first fixing member and the second fixing member and is locked by a nut member on the inner side of the second fixing member.

In an embodiment, the connection assembly further includes a filler positioned inside the second fixing member, the filler is provided with a nut receiving portion opened toward an outside, a main body of the filler is an insulating structure, and a wall of the filler facing the main shielding layer is a supporting structure.

In one embodiment, the connecting body has an outer contour constituting a cylinder, the connecting body being positioned with its axis perpendicular to the wall, and the at least two first through holes on the connecting body being arranged radially symmetrically with respect to the axis; or

The connecting body has an outer contour forming a cuboid.

In one embodiment, the connecting body has a wiring groove opened to the outside, and the wiring groove penetrates the connecting body in a direction perpendicular to the connecting direction when viewed from an extension plane of the wall of the storage container.

In one embodiment, the dimension of the cabling channel is 1/2-4/5 of the dimension of the connecting body in the axial direction of the connecting body; in another radial direction perpendicular to the radial direction, the dimension of the cabling channel is 1/5-1/3 of the dimension of the connecting body.

In one embodiment, the inner and outer structures each comprise an outer support wall, an inner support wall and an insulating layer between the outer support wall and the inner support wall, the outer support walls of the sections protruding beyond the inner support wall and the insulating layer in the connecting direction of the two adjacent sections, wherein the outer support walls of the inner and outer structures each extend into the connecting region to at least partially overlap the connecting assembly, the outer end of the first connecting member is directly or indirectly connected to the outer support wall of the outer structure, and the inner end of the first connecting member is connected to the outer support wall of the inner structure via the first and second fixing members.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. Like reference numerals in the drawings refer to like parts. It will be appreciated by those skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention, without in any way limiting the scope of the invention, and that the various components in the drawings are not to scale.

FIG. 1 is a schematic cross-sectional view of a wall of a storage vessel according to a preferred embodiment of the present invention;

FIG. 2A is a perspective view of the connecting body of FIG. 1;

figure 2B is a perspective view of the connecting body shown in figure 2A;

FIG. 3A is a perspective view of the first attachment member of FIG. 1;

FIG. 3B is a perspective view of the second mount of FIG. 1;

FIG. 4 is a perspective view of the filling member of FIG. 1;

FIG. 5 is a perspective view of the card slot junction between the two-layer structure of FIG. 1;

FIG. 6A is a perspective view of the anchor assembly of FIG. 1 in an exploded condition;

fig. 6B is a cross-sectional view of the anchor assembly of fig. 1 in an exploded state.

Reference numerals:

100 wall of a storage container

11 first section

12 second section

13 connection region of the first and second sections

14 inner layer structure

141 first inner supporting wall

142 first insulating layer

143 first outer support wall

15 outer layer structure

151 second inner support wall

151a card slot

152 second insulating layer

153 second outer support wall

16 gaps

17 adhesive tape

18 primary shield layer

181 plate

182 shield layer corrugation

19 sub-shielding layer

191. 192-degree shield layer unit

1911a, 1912a bent segment of sub-shield layer unit

20 connecting assembly

21 connecting body

212 Wiring groove

213 first via hole

22 first fixing member

221 second through hole

222 central through hole of first fixing member

23 second fixing member

231 center through hole of second fixing piece

241 first connecting piece

242. 252 nut member

251 second connecting member

212 Cable

26 filling member

261 receiving hole of filling piece

262 plywood layer of filler

27 Embedded plate

30 connection position of first inner support wall and main shielding layer

31 anchor assembly

311 Anchor body

312 anchor lock

32 Anchor receiver

321 anchor receiving slot

322 elongate portion of the anchor receiving slot

323 anchor receiver interior

324 bottom surface of top wall of anchor receiver

40 attachment of inner and outer layer structures

41 card strip

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. What has been described herein is merely a preferred embodiment in accordance with the present invention and other ways of practicing the invention will occur to those skilled in the art and are within the scope of the invention.

The invention provides a storage vessel for storing liquefied gas, the wall of which is divided into at least two sections in its direction of extension, fig. 1-6B showing the structure at the connection area of two adjacent sections.

It should be noted that the directional terms and positional terms used herein are merely exemplary and are not intended to be limiting, and can be understood by referring to the positions, orientations, etc. of the respective components shown in fig. 1 to 6B. Descriptions of positions with respect to components should be understood as relative positions rather than absolute positions, and descriptions of directions of extension of components should be understood as relative directions rather than absolute directions. For example, in the present invention, "inside", "inwardly" may be understood as the side of the wall of the storage vessel containing the liquefied gas and the direction towards the side containing the liquefied gas, which is shown for example by D1+ shown in fig. 1; "outboard", "outwardly" is the side of the wall facing the environment and in a direction toward the environment, such as shown by D1-in FIG. 1; the "D1 direction" refers to the D1 direction of the wall, defined for example by the directions shown by D1+, D1-. The directions D1 (including D1+, D1-), D2, D3 shown in fig. 1-6B are three directions that are orthogonal in space.

It should also be noted that fig. 1-6B of the present invention are merely schematic drawings, and fig. 1-6B are not necessarily drawn to scale, nor are there corresponding dimensional relationships between the drawings, e.g., the ratio of the length to the diameter of the connecting body in fig. 1 is not necessarily exactly equal to the ratio of the length to the diameter of the connecting body in fig. 2A.

Referring to fig. 1, the wall 100 of the storage container of the present invention comprises a two-layer structure, an outer layer structure 15 and an inner layer structure 14, stacked in the direction of D1 of the wall (i.e., in the direction of D1+, D1-extension). Also, the wall 100 comprises at least two sections along its extension. That is, each segment includes an inner layer structure 14 and an outer layer structure 15. Two adjacent sections of the at least two sections are connected by a connecting assembly. Fig. 1 schematically shows adjacent first and

second segments

11, 12 and a connecting assembly 20 connected therebetween.

In some embodiments, the outer layer structure 15 and the inner layer structure 14 each include an inner support wall, an outer support wall, and an insulation layer. The specific configuration, dimensions of the outer layer structure 15 and the inner layer structure 14 may be the same or similar, but preferably also with some differences. For convenience of description, the wall layers of the inner layer structure 14 are respectively referred to as a first inner support wall 141, a first outer support wall 143, and a first insulation layer 142, and the wall layers of the outer layer structure 15 are respectively referred to as a second inner support wall 151, a second outer support wall 153, and a second insulation layer 152. It should be noted that the descriptions of "first" and "second" are used for distinguishing and do not imply or imply any order.

The wall 100 further comprises a main shield 18 arranged inside the inner layer structure 14, the main shield 18 extending across the first section 11, the second section 12 and the connection area 13 in a connection direction along the first section 11, the second section 12, i.e. in the direction D2. The main shield 18 may, for example, include a shield corrugation 182 at the connection region 13 (e.g., at a location inboard of the connection assembly 20) and include a flat plate 181 directly facing the first inner support wall 141. The main shield 18 may be formed by splicing the shield corrugations 182 and the flat plate 181, and the spliced main shield 18 has an integral form spanning the first section 11, the second section 12 and the connecting region 13 as shown in fig. 1. Connecting the primary barrier 18 as an integral member can improve the liquid-tight, gas-tight effect of the storage container, avoiding seepage. Meanwhile, the shielding layer corrugations 182 are arranged in the integrated member, so that the tension of the main shielding layer 18 can be increased, and the main shielding layer 18 is allowed to slightly stretch or contract under different use temperatures and use pressures, and the sealing effect of the main shielding layer 18 cannot be influenced by the slight deformation; and providing the portions of the main shield layer 18 facing the respective first inner support walls 141 as flat plates can facilitate the connection mounting of the main shield layer 18 and the first inner support walls 141.

The inner layer structure 14 and the outer layer structure 15 may also have some preferred arrangements. For example, for the inner layer structure 14, the first inner supporting wall 141 and the first outer supporting wall 143 may be made of, for example, an insulated plywood and mainly play a supporting role, and the thicknesses of the first inner supporting wall 141 and the first outer supporting wall 143 may also be substantially equal, and the thicknesses thereof may be slightly larger than the thickness of the main shielding layer 18 but smaller than the thickness of the first insulating layer 142. The first insulating layer 142 may be made of an insulating PUF, for example.

For the outer structure 15, the second inner support wall 151 and the second outer support wall 153 may be made of, for example, insulated plywood and mainly serve as a support, and the thicknesses of the second inner support wall 151 and the second outer support wall 153 may also be substantially equal, and may be smaller than the thickness of the second insulation layer 152. The second insulating layer 152 may be made of an insulating PUF, for example.

Preferably, the wall 100 may further comprise a secondary shielding layer 19 located between the inner and outer layer structures 14, 15, the secondary shielding layer 19 may be made of invar and may have a thickness significantly smaller than the thickness of the primary shielding layer 18. The secondary shield 19 may also be formed by splicing a plurality of secondary shield elements, and fig. 1 shows the connection locations 40 of adjacent shield elements, the specific connection manner of which will be discussed later.

With continued reference to fig. 1, in the present embodiment, the overall thickness of the outer layer structure 15 is greater than the overall thickness of the inner layer structure 14; the thicknesses of the first inner support wall 141, the first outer support wall 143, the second inner support wall 151, and the second outer support wall 153 for supporting may be substantially equal; the thickness of the second insulating layer 152 is significantly greater than the thickness of the first insulating layer 142; the thickness of the primary shield layer 18 is significantly greater than the thickness of the secondary shield layer 19; the thicknesses of the first insulating layer 142 and the second insulating layer 152 are significantly greater than those of the other layer structures.

In some embodiments, the different wall layers of the outer layer structure 15 and the inner layer structure 14 may have different lengths of extension. Portions of the wall layers of the outer layer structure 15 and the inner layer structure 14 extend into the attachment region 13 to at least partially overlap the attachment assemblies 20 to secure the attachment assemblies 20 together in the direction D1. By "overlap" it is meant that when the portion of the wall layer and attachment assembly 20 are projected into the plane of projection in the direction D1, the projection of the portion of the wall layer and attachment assembly 20 at least partially coincide.

For example, the first outer support wall 143 of the inner layer 14 of the first section 11 extends towards the second section 12, and the first outer support wall 143 of the inner layer 14 of the second section 12 extends towards the first section 11, so that the first outer support wall 143 of the inner layer 14 of the first and

second sections

11, 12 extends into the connection area 13 and partially overlaps the connection assembly 20. The second outer support wall 153 of the outer structure 15 of the first section 11 extends towards the second section 12 and the second outer support wall 153 of the outer structure 15 of the second section 12 extends towards the first section 11, so that the second outer support wall 153 of the outer structure 15 of the first and

second sections

11, 12 extends into the connection area 13 and partially overlaps the connection assembly 20. Preferably, the main body structure of the connecting assembly 20 (e.g., the connecting body 21, which will be described in detail later) is positioned between the first and second

outer support walls

143, 153 in the direction D1, and the first and second

outer support walls

143, 153 are directly or indirectly connected to the outer support wall.

It should be noted that, in the present invention, two components are "directly connected" to each other, which means that the two components are directly connected together without a connecting member or other medium; "indirectly connected" as opposed to "directly connected" means that the two components can be connected together by a connecting member, that other connecting media can also be present between the two components, and that the two components do not even have to be in direct contact.

The invention also provides specific and preferred configurations for the connection assembly. The connecting assembly 20 includes, for example, a connecting body 21, a first fixing member 22, a second fixing member 23, a first connecting member 241, a second connecting member 251, and a filling member 26.

With reference to fig. 1, 2A and 2B, the connecting body 21 is positioned at the connecting region 13 of the respective outer structure 15 of the first segment 11 and of the second segment 12, the connecting body 21 possibly having an outer contour constituting a substantially cylindrical body and the axis of which is perpendicular to the plane of extension of the wall 100 when the connecting body 21 is correctly mounted, that is to say the axis of the connecting body 21 extends in the directions D1+, D1-. The connecting body 21 has two first through holes 213 for receiving the first connecting members 241, and preferably has a wiring groove 212. The cabling channel 212 may extend through the connecting body 21 in the radial direction R1 of the connecting body 21 and the outer side of the cabling channel 212 is open, that is to say the cabling channel 212 is open on three sides, i.e. on the outer side and on both sides in the first radial direction R1, to allow cables (see fig. 1) or other structures to pass therethrough. It is understood that the radial direction R1 shown in fig. 2B may be parallel to the D3 direction, and the radial direction R2 may be parallel to the D2 direction. In other embodiments, not shown, the connecting body 21 may have an outer contour that constitutes a rectangular parallelepiped, or other shape.

Each first through hole 213 in the connecting body 21 extends through the connecting body 21 in a direction parallel to the axis X of the connecting body 21, and two first through holes 213 are symmetrically arranged about the axis X and are respectively close to the adjacent first and

second sections

11 and 12. In the present embodiment, the two first connecting pieces 241 are symmetrically arranged with respect to the radial direction R1.

Preferably, the first connecting member 241 for penetrating the first through hole 213 in this embodiment may be a bolt assembly, and the first through hole 213 may be a hole with a smooth inner supporting wall or a threaded hole.

It is also preferred that the routing channel 212 on connecting body 21 have a particular dimension, for example the dimension of the routing channel 212 in the direction along axis X is 1/2-4/5 of the dimension of connecting body 21; in the radial direction R2, the dimension of the cabling channel 212 is 1/5-1/3 of the dimension of the connecting body 21. Experiments show that the wiring channel 212 with the above dimensions can meet the requirements for accommodating cables or other equipment, and the overall rigidity of the connecting body 21 is not affected, so that the connecting member assembly can be compatible with other equipment near or on some storage containers while accomplishing the firm connection of adjacent sections.

It is understood that in actual production, the arrangement of the cabling channel 212 can be changed or eliminated according to the use requirement. In other words, in some embodiments, the connecting body may be provided without a routing channel or with routing channels of other shapes, sizes.

The inner end of the first connecting member 241 protrudes from the connecting body 21 and is locked to the first fixing member 22. referring to fig. 3A, the first fixing member 22 may be provided with a second through hole 221 for receiving the inner end of the first connecting member 241. The outer end of the first connecting element 241 also protrudes beyond the connecting body 21 and is directly or indirectly locked to the respective second outer supporting wall 153 of the first and

second segments

11, 12. As previously described, in the direction D1, the second outer support wall 153 and the connecting assembly 20 partially overlap to enable the outer end of the first connecting member 241 to engage the first outer support wall 153 of the outer structure 15. In other embodiments, not shown, the first connecting member may be a plurality of connecting members, and the plurality of connecting members are divided into two groups and respectively abut against the first section and the second section.

In assembly, the outer structure 15 may be secured to a substrate, such as a concrete or steel substrate (not shown), by a low temperature resistant adhesive strip 17. When assembling, can place outer structure 15 on the basic unit earlier, later press outer structure along D1-direction, low temperature resistant adhesive tape 17 is compressed tightly, and space 16 that low temperature resistant adhesive tape 17 was located disappears to make outer structure 15 paste on the basic unit. Preferably, the embedment plate 27 may be fixedly installed at an outer side of the base layer, and a nut member 242 is fixed to the embedment plate 27, the nut member 242 being adapted to receive an outer end of the locking first connector 241.

The connection body 21 and the first fixing member 22 in this embodiment are connected to the portion of the connection assembly 20 at the inner structure 14 via the second connection member 251. Specifically, referring to fig. 1 and 3A, the center of the first fixing member 22 may have a central through-hole 222 partially receiving the second connecting member 251; referring to fig. 1 and 3B, the center of the second fixing member 23 may also have a central through-hole 231 partially receiving the second connecting member 251. As previously mentioned, in the direction D1 of the wall, the first outer support wall 143 also has a portion overlapping the connection assembly 20, the outer support walls of the inner layer 14 of the first and

second segments

11, 12 together defining a through hole for only the second connection 251 to extend through.

The second connecting member 251 may extend through the first fixing member 22 and the second fixing member 23 to fixedly connect the two. The second connecting member 251 may be a stud, an inner end of which may protrude from the second fixing member 23 and engage with a nut member 252, and the nut member 252 may be fixed in the packing 26. The structure of the filling member 26 is shown in fig. 4, for example, and the filling member 26 may include an insulating filling member body made of PUF and a plywood layer 262 positioned inside the filling member body to provide a supporting strength. The inner end of the second connector 252 can enter the filler piece via the receiving hole 261 on the filler piece 26 to engage with the nut member 252.

In other embodiments, not shown, the inner and outer ends of the connecting body may be secured directly to the first portion first wall and the first portion second wall, respectively, without the provision of a first connector. Alternatively, the first fixing member and the second fixing member may be directly fixed together without providing the second connecting member.

The connection assemblies may be adapted for use with walls having other layer structures, for example, in some embodiments, the inner and outer layer structures of the wall do not necessarily strictly include an outer support wall, an inner support wall, and an insulating layer. For walls having various layer structures, the connection assembly is configured to position the connection body between the outer layer structures of two adjacent segments and such that the two first connectors abut the two adjacent segments, respectively, and the first connectors extend through the connection body in the thickness direction, and outer ends of the first connectors are directly or indirectly connected to the outer layer structures and inner ends of the first connectors are directly or indirectly connected to the inner layer structures.

In addition to the arrangement of the connecting elements, the individual layer structures can also have some preferred arrangements.

For example, as described above, the sub-shield layer 19 may be formed by connecting a plurality of sub-shield layer units. In some embodiments, adjacent secondary shield elements may be connected together by the inner support wall being secured to the same outer structure. For example, referring to fig. 5, two adjacent

sub-shield layer units

191 and 192 may be commonly fixed to the same second inner support wall 151 through the card slot 151a and the card bar 41, so that the

sub-shield layer units

191 and 192 are integrally connected. Specifically, the second inner support wall 151 is provided with a slot 151a for partially accommodating the card bar 41, the card bar 41 includes a first portion and a second portion forming a T-shaped structure, the first portion is accommodated in the slot 151a, the second portion extends to be engaged with the first outer support wall 143 of the inner layer structure 14, and the secondary shielding layer unit 191 has a bent section 1911a at the card bar 41 to be attached to the second portion of the card bar 41; secondary shield element 192 has a bent section 1912a at card strip 41 to conform to a second portion of card strip 41. Preferably, the second portion of the clip strip 41 and the bent section of the secondary shielding layer unit attached thereto can be inserted together inwardly into the second inner support wall 151 of the inner layer structure 14. Card slot 151a, card bar 41 is positioned in spaced relation to connection assembly 20.

In this embodiment, the primary barrier 18 extends completely and continuously along the entire wall of the storage vessel to define a closed space configured for containing liquefied gas; the integrally connected secondary shield layer 19 extends completely and continuously in the extending direction of the entire wall to define another closed space between the secondary shield layer 19 and the primary shield layer 18. The enclosed space enclosed by the primary shield 18 itself is independent of the enclosed space defined by the primary and

secondary shields

18, 19 together. The double-insurance sealing mode can improve the air tightness of the storage container, thereby improving the safety performance of the storage container.

More preferably, there may be a gap between the first outer support wall 143 and the secondary shielding layer 19 such that the inner structure 14 and the outer structure 15 are spaced apart, the thickness of which may be slightly less than or equal to the thickness of the secondary shielding layer 19.

In some embodiments, the first inner support wall 141 of the inner layer structure 14 and the flat plate 181 of the primary shield 18 are detachably attached together by an anchor assembly. A detailed schematic view of the connection locations 30 of the first inner support wall 141 and the main shield 18 is shown in fig. 6A and 6B.

Referring to fig. 6A and 6B, the anchor assembly includes an anchor 31 and an anchor receiver 32, wherein the anchor 31 is fixed to a plate 181 of the main shield layer 18 and extends outward from the plate 181, and the anchor receiver 32 is provided on the first inner support wall 141 and has an opening facing the anchor 31 to form an anchor receiving groove 321. The shapes of the anchor receiving groove 321 and the anchor 31 are set so that the anchor 31 can be inserted into the anchor receiving groove 321 in the insertion direction I and rotated by a predetermined angle (e.g., 90 °) in the rotation direction S within the rotation plane defined by the D2 direction, the D3 direction to reach the locked position.

In some embodiments, anchor 31 may comprise an anchor body 311 protruding outwards from plate 181 and an anchor lock 312 protruding radially outwards at the outer end of anchor body 311, wherein anchor body 311 is a cylinder extending parallel to axis X of connector body 21, the axis of the anchor body itself being X1. The anchor lock 312 is an elongated structure protruding in the radial direction of the anchor body 311. Further, the anchor lock 312 may be multiple, and the multiple anchor locks 312 may be uniformly arranged around the anchor body 311. Alternatively, the anchor locks 312 may be two, and the two anchor locks 312 are symmetrically arranged about the axis X1 of the anchor body 311.

Preferably, the length of the anchor lock 312 (e.g., the dimension in the direction D2 shown in fig. 6B) is 1/3-2/3 of the diameter of the anchor body 311; the thickness of the anchor locks 312 (e.g., the dimension in the D1+, D1-directions shown in fig. 6B) is 1/3-2/3 of the thickness of the anchor body 311, preferably the sum of the thickness of the anchor locks 312 and the thickness of the outer support wall of the anchor receiver 32 is substantially equal to the thickness of the anchor body 311; the width of the anchor lock 312 (e.g., its dimension in the direction D3) is 1/5-1/3 the diameter of the anchor body 311.

Also preferably, referring to fig. 6B, the anchor receiving member 32 is defined as a substantially hollow structure, and the top wall (i.e., the innermost wall) thereof defines an anchor receiving groove 321, i.e., the anchor receiving groove 321 opens toward the inside. The anchor receiving slot 321 includes a circular portion that receives the anchor body 311 and an elongated portion 322 that receives the anchor lock 312. Anchor 31 can be shape-aligned with anchor receiving slot 321 and allow insertion of anchor lock 312 into hollow interior 323 of anchor lock 312, after which anchor receiving member 32 is rotated 90 ° in rotational direction S relative to anchor 31, at which time anchor lock 312 abuts against bottom surface 324 of the top wall of anchor receiving member 32 and is restrained from disengagement with respect to anchor lock 312.

The specific sizing and configuration of the anchor 31 and the anchor receiving slot 321 described above, as a result of repeated experimental work, results in an anchor assembly having the above-described dimensions and configuration with a low self-weight, high operating sensitivity, and sufficient strength to provide stable engagement between the flat plate and the first inner support wall.

In this embodiment, during assembly, the first inner support wall 141 (the first inner support wall 141 being, for example, a square section projected on a plane defined by the directions D2, D3) and the anchor receiver 32 can be manipulated to rotate relative to the plate 181 and the anchor 31, thereby locking the anchor 31 relative to the anchor lock 312. In other embodiments, the anchor assembly may also be configured to enable an operator to manipulate anchor 31 to lock it relative to anchor receiver 32, e.g., the plate 181 may be rotated before it is spliced together with shield corrugations 182 to rotate anchor 31 relative to anchor-receiving slot 32.

The wall of the storage container of the present invention may comprise a plurality of segments arranged in an array, and any pair of adjacent segments may have a connection between the first segment 11 and the second segment 12 as described above. For example, it will be appreciated that there may be a third section on one side of the first section 11 in the direction D3, and that there may also be a configuration between the first section 11 and the third section as at the connection region 13, and that the first section 11 and the third section may be connected by means similar to the connection assembly 20.

The wall of the storage container provided by the invention is formed by connecting modular sections through the connecting assembly, and the connecting assembly can realize stable connection of adjacent sections and is easy to disassemble and maintain subsequently. Meanwhile, the connecting component provided by the invention also has the configuration of being compatible with other structures such as cables and the like, so that the connecting component can form a partial structure of a multifunctional integrated module. On the other hand, the individual modules of the wall of the storage container according to the invention also have a preferred configuration, are capable of achieving sealing, insulation at the same time and have sufficient support strength by themselves. The invention also provides various preferred arrangements of the thickness, the specific structure, the connection means, etc. of the individual functional layers of the individual modules of the wall of the storage container.

The foregoing description of various embodiments of the invention is provided for the purpose of description to one of ordinary skill in the relevant art. It is not intended that the invention be limited to a single disclosed embodiment. As above, many alternatives and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the above teachings. Thus, while some alternative embodiments have been described in detail, other embodiments will be apparent to, or relatively easy to develop by, those of ordinary skill in the art. The present invention is intended to embrace all such alternatives, modifications and variances of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention as described above.

Claims

1. A storage vessel for storing liquefied gas, the wall (100) of which comprises, in its direction of extension, at least two sections, each comprising an inner layer structure (14) and an outer layer structure (15) superposed in the thickness direction of the wall, adjacent two sections (11, 12) of which are connected between them at a connection region (13) by a connection assembly (20), characterized in that the connection assembly comprises:

-a connecting body positioned between the outer layer structures (15) of two adjacent segments (11, 12);

at least two first connectors abutting against the two adjacent sections (11, 12) respectively, the first connectors extending through the connecting body (21) in the thickness direction (D1), and the outer ends of the first connectors being connected directly or indirectly to the outer layer structure and the inner ends of the first connectors being connected directly or indirectly to the inner layer structure.

2. A storage container according to claim 1, wherein the connecting assembly (20) further comprises at least one fixing member (22, 23) located inside the connecting body, the inner end of each first connecting member (241) being fixedly connected to the inner layer structure via the at least one fixing member.

3. The storage container of claim 2, wherein the at least one securing member comprises:

-a first fixing element (22) positioned between the outer structures (15) of the two adjacent sections (11, 12), the inner end of each first connecting element (241) being locked to the first fixing element (22);

a second fastening element (23) which is fastened between the respective inner layer structures (14) of two adjacent segments (11, 12);

and, the connecting assembly further includes a second connecting member (251) configured to connect the first fixing member (22) and the second fixing member (23).

4. A storage vessel according to any one of claims 1-3, c h a r a c t e r i z e d in that the first connector (241) is a bolt and that the coupling assembly (20) further comprises a embedment plate (27) positioned on the outside of the outer structure, the embedment plate having a nut member (242) secured to its inner side and the outer end of the first connector being locked by the nut member.

5. A storage container as claimed in claim 3, wherein the second connecting member (251) is a stud, and the first and second fixing members (22, 23) are each provided with a central through hole (222, 231) extending in the direction of the axis (X) of the stud, and the second connecting member (251) extends through the central through holes of the first and second fixing members and is fastened by a nut member (252) on the inner side of the second fixing member.

6. The storage container according to claim 5, wherein the connection assembly (20) further comprises a filler (26) positioned inside the second fixing member (23), the filler having a nut receiving portion opened to an outside, and a main body of the filler being an insulating structure, and a wall (262) of the filler facing the main shield being a supporting structure.

7. Storage container according to any one of claims 1 to 3,

the connecting body has an outer contour forming a cylinder, is positioned with its axis perpendicular to the wall (100), and is provided with at least two first through holes (213) for receiving the at least two first connectors, which are arranged radially symmetrically with respect to the axis; or

The connecting body has an outer contour forming a cuboid.

8. The storage container according to claim 7, wherein the connecting body (21) has a wiring groove (212) opened to the outside, and the wiring groove penetrates the connecting body in a direction perpendicular to the connecting direction (D2) when viewed from the extension plane of the wall of the storage container.

9. Storage container according to claim 8, wherein the dimension of the cabling channel in the axial (X) direction of the connecting body is 1/2-4/5 of the dimension of the connecting body; in another radial direction (R2) perpendicular to the radial direction (R1), the routing groove has a dimension of 1/5-1/3 of a dimension of the connecting body.

10. Storage container according to claim 5, characterized in that the inner layer structure (14) and the outer layer structure (15) each comprise an outer support wall (143, 153), an inner support wall (141, 151) and an insulation layer (142, 152) between the outer support wall and the inner support wall, in the connecting direction (D2) of the two adjacent sections (11, 12), the outer supporting walls of the sections protrude beyond the inner supporting walls and the insulating layer, wherein the outer support walls (143, 153) of the inner and outer layer structures (14, 15) each extend into the connection region (13) to at least partially overlap the connection assembly (20), the outer end of the first connecting piece is directly or indirectly connected with the outer supporting wall of the outer layer structure, the inner end of the first connecting piece is connected with the outer supporting wall of the inner layer structure through the first fixing piece, the second fixing piece and the outer supporting wall.