CN114962984A

CN114962984A - Storage container for storing liquefied gas and method for assembling the same

Info

Publication number: CN114962984A
Application number: CN202210745956.9A
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: CN114962984B

Abstract

The invention discloses a storage container for storing liquefied gas and an assembly method thereof. The wall of the storage container comprises at least two sections, and the two adjacent sections are connected through a connecting assembly. The inner and outer support walls of the inner and outer structures of two adjacent segments each extend into the joining region to at least partially overlap with a joining assembly joining together, in the thickness direction of the wall, the outer support walls of the inner and outer structures of two adjacent segments. The wall of the storage container according to the invention is formed from modular segments connected by connecting elements, the different wall layers of the segments having different run lengths, so that part of the wall layers extends into the connecting region to overlap the connecting elements in order to adapt correspondingly to the connecting elements. 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 and method for assembling the same

Technical Field

The present invention relates to the technical field of Liquefied Natural Gas (LNG) cryogenic storage devices, and more particularly, to a storage container for storing liquefied gas and an assembly method thereof.

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. In the invention, different layers of modular segments have different extension lengths, and part of the layers extend into the connecting area and overlap the connecting assembly to be correspondingly adapted to the connecting assembly. The connecting assembly enables stable connection of adjacent sections and is at the same time easy to disassemble and to subsequently maintain.

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 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 and an outer layer structure stacked in the thickness direction of the wall, adjacent two of the at least two sections being connected at a connection region by a connection assembly, the inner and outer layers each comprising an outer support wall, an inner support wall and an insulating layer between the outer and inner support walls,

characterized in that the outer support walls of the sections project beyond the inner support wall and the insulating layer in the direction of connection of the two adjacent sections, wherein the outer support walls of the inner and outer structures each extend into the connection region to at least partially overlap the connection assembly, and wherein the connection assembly connects together the outer support walls of the inner and outer structures of the two adjacent sections in the thickness direction of the walls,

and the wall further comprises a main shield layer arranged inside the inner layer structure, the main shield layer extending across the two adjacent sections and the connection region in a connection direction along the two adjacent sections.

In one embodiment, the connection assembly comprises a connection body positioned between the insulation layers of the outer skin structures of two adjacent segments.

In one embodiment, two first through holes are opened on the connecting body, each first through hole extends through the connecting body along the thickness direction, and the two first through holes are respectively adjacent to the two adjacent sections,

and the connecting assembly comprises two first connecting pieces, the two first connecting pieces penetrate through the two through holes respectively, the outer ends of the first connecting pieces are directly or indirectly fixedly connected with the outer supporting wall of the outer layer structure, and the inner ends of the first connecting pieces are directly or indirectly fixedly connected with the outer supporting wall of the inner layer structure.

In one embodiment, the connection assembly further comprises at least one fixing member located inside the connection body, the inner end of the first connection member being fixedly connected to the outer support wall of the inner structure via the at least one fixing member.

In one embodiment, the at least one fixture includes:

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

a second fixing member fixed inside the outer support wall of the respective inner layer structure of the adjacent two 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-embedded plate positioned outside the outer support wall of the outer structure, a nut member penetrating the outer support wall of the outer structure is fixedly arranged on an inner side surface of the pre-embedded 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 two first through holes 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 routing channel has a dimension 1/2-4/5 of a dimension of the connecting body in a thickness direction of the wall; in the connecting direction, the dimension of the wiring groove is 1/5-1/3 of the dimension of the connecting body.

In one embodiment, for each of the outer layer structure and the inner layer structure:

the thickness of the insulating layer is larger than that of the inner support wall; and/or

The outer support wall and the inner support wall are made of the same material and have the same thickness as the inner support wall.

In one embodiment, for each of the outer layer structure and the inner layer structure: the inner supporting wall and the outer supporting wall are made of insulating plywood; the insulating layer is made of a PUF.

In one embodiment, the primary shield includes a flat plate detachably attached to the inner support wall of the inner structure by an anchor assembly and a shield corrugation located inside the attachment area.

In one embodiment, the anchor assembly includes an anchor extending outward from the flat plate and an anchor receiving groove provided on the inner support wall toward the anchor opening, the anchor receiving groove and the anchor being shaped so that the anchor can be inserted into the anchor receiving groove and rotated by a predetermined angle in a rotation plane perpendicular to an insertion direction to reach a locking position.

In one embodiment, the anchor comprises an anchor body protruding outwards from the flat plate and an anchor lock projecting radially outwards at an outer end of the anchor body, wherein the anchor body is a cylinder with an axis perpendicular to the wall and the anchor lock is an elongated structure projecting in a radial direction of the anchor body.

In one embodiment, the wall further comprises a secondary shielding layer between the inner and outer structures, the secondary shielding layer extending across the first and second sections and the connection region in a direction of connection of the first and second sections.

In one embodiment, the secondary shield layer is formed by connecting a plurality of secondary shield layer units, and the adjacent secondary shield layer units are connected together by fixing to the inner support wall of the same outer structure,

and the primary barrier extends completely and continuously along the entire wall of the storage vessel to define an enclosed space configured for containing liquefied gas; the secondary shielding layer integrally connected extends completely and continuously along the extending direction of the whole wall so as to define another closed space independent of the closed space between the secondary shielding layer and the main shielding layer.

In one embodiment, the inner support wall of the outer structure defines a slot therein for partially receiving a clip strip, the clip strip includes a first portion and a second portion forming a T-shaped structure, the first portion is received in the slot, the second portion extends to engage the outer support wall of the inner structure, and adjacent shield units each have a bend at the clip strip for engaging and welding with the second portion of the clip strip.

In one embodiment, there is a space between the secondary shielding layer and the inner layer structure.

In one embodiment, the wall comprises a plurality of segments arranged in an array.

According to another aspect of the invention, there is provided a method of assembling a wall of a storage container according to any one of the above aspects, the method comprising the steps of:

a pre-order mounting step, the pre-order mounting step comprising securing a portion of the connection assembly to the base layer;

an outer structure mounting step, the outer structure setting step comprising:

securing the modular outer layer structure of the first and second sections to the base layer;

installing a connecting body of the connecting assembly between the outer structures of the first section and the second section, and fixedly connecting the connecting body and the part of the connecting assembly;

an inner layer structure mounting step including:

placing the modular understructure of the first section inside the understructure of the first section and placing the modular understructure of the second section inside the understructure of the second section;

installing another portion of the connection assembly between the outer structures of the first and second segments and directly or indirectly connecting the other portion to the connection body; and

a main shielding layer mounting step including providing a main shielding layer on the inner side of the inner layer structure of the first section and the second section.

In one embodiment, the preamble installation step comprises: fixing the embedded plate on the concrete base layer; mounting a nut component on the top of the embedded plate;

and the outer structure mounting step includes:

penetrating a bolt through the connecting body such that an outer end of the bolt is locked by the nut member; and

and arranging a first fixing piece on the inner side of the connecting main body, and locking the inner end of the bolt to the first fixing piece.

In one embodiment, the inner layer structure mounting step comprises:

mounting a second fixing member inside an outer support wall of the inner structure;

connecting the second fixing piece and the first fixing piece together through a stud;

and a nut is arranged on the inner side of the second fixing piece and used for locking the inner end of the stud.

In one embodiment, the method further comprises a secondary shield installation step between the outer structure installation step and the inner structure installation step, the secondary shield installation step comprising: and fixing the secondary shielding layer units on the outer side of the inner support wall of the outer structure so that the adjacent secondary shielding layer units are connected into an integrated secondary shielding layer, wherein the integrated secondary shielding layer spans the first section, the second section and the connecting area in the connecting direction of the first section and the second section.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the 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 persons skilled in the art that the drawings are intended to illustrate preferred embodiments of the invention without any limiting effect on the scope of the invention, and that the various components in the drawings are not drawn 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 sets forth a perspective view of the connecting body of 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 condition;

fig. 7 is a schematic flow diagram of a method of assembling the walls of a storage container according to the invention.

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 flat 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 piece

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. The invention also provides a method of assembling the walls of the storage container, the general steps of which are shown in figure 7.

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. The description about the position of the components should be understood as a relative position rather than an absolute position, and the description about the extending direction of the components should be understood as a relative direction rather than an absolute direction. For example, in the present invention, "inner side", "inwardly" may be understood as the side of the wall of the storage vessel that contains liquefied gas and the direction toward the side that contains liquefied gas, such as shown 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 layer 18 arranged inside the inner layer structure 14, the main shield layer 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. the direction D2. The main shield 18 may, for example, include shield corrugations 182 at the connection regions 13 (e.g., at locations inboard of the connection assemblies 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 component, so that the tension of the main shielding layer 18 can be improved, 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 supporting wall 151 and the second outer supporting wall 153 may be made of, for example, insulated plywood and mainly serve as a support, and the thicknesses of the second inner supporting wall 151 and the second outer supporting wall 153 may be substantially equal to each other, and may be smaller than the thickness of the second insulating 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 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, which serve as supports, 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 shielding layer 18 is significantly greater than the thickness of the secondary shielding 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 connector assembly 20 are projected into the plane of projection in the direction D1, the projection of the portion of the wall layer and connector 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 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. In these embodiments, the connecting body may be provided with a wiring groove that opens outward, and the wiring groove may penetrate the connecting body in a direction perpendicular to the connecting direction when viewed from the extension plane of the wall of the storage container.

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. The two first connections 241 are arranged symmetrically with respect to the radial direction R1.

Preferably, the first connector 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 support 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 cancelled 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 assembly, the outer structure 15 may be secured by a low temperature resistant adhesive strip 17 to a substrate (not shown), such as a concrete substrate or a steel substrate. 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 in concrete basic unit. Preferably, the embedment plate 27 may be fixedly installed at an outer side of the concrete 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 each other through the second connection member 251 and the portion of the connection member 20 located at the inner layer structure 14. 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.

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 secondary shield layer 19 may be formed by connecting a plurality of secondary shield layer units. In some embodiments, adjacent secondary shield units 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 anchor receiving groove 321 and the anchor 31 are shaped 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 plural, and the plural 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.

In a further aspect of the invention there is provided a method of assembling the walls of a storage container, the general steps of which are illustrated in figure 7 and described below in conjunction with figures 1 and 7. The method of assembling the wall of the storage container roughly includes, in order, a preamble mounting step S1, an outer-layer structure mounting step S2, a secondary shield mounting step S3, an inner-layer structure mounting step S4, and a primary shield mounting step S5.

The preceding installation step S1 includes fixing a portion of the coupling assembly 20 to the substrate, for example, a embedment plate 27 may be provided on the substrate, and the nut member 242 of the coupling assembly 20 is fixed to the embedment plate 27.

The outer structure mounting step S2 includes a wall layer mounting step S21 and a mounting step S22 of a corresponding part of the connection assembly. Specifically, the wall layer mounting step S21 includes: the modular outer structure 15 of the first and second segments 11, 12 is fixed to the substrate, wherein the outer structure 15 is, for example, a modular combination of a prefabricated second outer support wall 153, a second insulation layer 152 and a second inner support wall 151. The mounting step S22 of the corresponding part of the connection assembly may include: the connecting body 21 of the connecting assembly 20 is mounted between the outer structures 15 of the first and second sections 11, 12 and the connecting body 21 and a part of the connecting assembly are fixedly connected. The mounting step S22 of the corresponding part of the connection assembly may specifically comprise: a bolt (i.e., the first connector 241) is inserted through the connecting body 21 such that the outer end of the bolt is locked by the nut member 242; and a first fixing member 22 is provided at the inner side of the connecting body 21, and the inner end of the bolt is locked to the first fixing member 22.

The secondary shield layer mounting step S3 includes: the sub-shield layer units are fixed to the outside of the second inner support wall 151 of the outer structure 15 such that adjacent sub-shield layer units are connected to the integrated sub-shield layer 19, the integrated sub-shield layer 19 spanning the first section 11, the second section 12 and the connection region 13 in the connection direction D2 of the first section 11 and the second section 12. It will be appreciated that in some embodiments, the step of providing the secondary shield layer 19 may be omitted.

The internal structure mounting step S4 includes a wall layer mounting step S41 and a mounting step S42 of a corresponding part of the connection assembly. Wherein the wall layer mounting step S41 includes: the modular inner structure 14 of the first section 11 is placed inside the outer structure 15 of the first section 11 and the modular inner structure 14 of the second section 12 is placed inside the outer structure 15 of the second section 12. The mounting step S42 of the corresponding structure of the connection assembly includes: another part of the connecting assembly 20 is mounted between the outer structures 15 of the first and second sections 11, 12 and is connected directly or indirectly to the connecting body 21. The mounting step S42 of the corresponding part of the connection assembly may specifically comprise: mounting the second fixing member 23 inside the first outer support wall 143 of the inner layer structure 14; connecting the second fixing member 23 and the first fixing member 22 by a stud (i.e., the second connecting member 251); a nut member 252 is provided on the inner side of the second fixture 23 for locking the inner end of the stud. This step may also include the step of installing the filler 26.

The main shield mounting step S5 includes providing main shield units inside the inner layer structure 14 of the first and second sections 11, 12, and connecting the respective main shield units together to form an integrated main shield 18 spanning the first and second sections 11, 12 and the connection region 13 in the D2 direction.

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 illustration 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 are specifically described, other embodiments will be apparent to, or relatively easily developed 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. Storage vessel for storing liquefied gas, the wall (100) of which comprises in its direction of extension at least two sections, each section comprising an inner structure (14) and an outer structure (15) superposed in the thickness direction of the wall, adjacent two sections (11, 12) of which are connected by a connection assembly (20) at a connection region (13), the inner structure (14) and the outer structure (15) each comprising an outer support wall (143, 153), an inner support wall (141, 151) and an insulating layer (142, 152) between the outer and inner support walls, characterized in that the outer support walls of the sections protrude beyond the inner support walls and the insulating layer in the connection direction (D2) of the adjacent two sections (11, 12), wherein the inner structure (14), Outer support walls (143, 153) of an outer structure (15) each extend into the connection region (13) to at least partially overlap the connection assembly (20), and the connection assembly (20) connects together the respective outer support walls (143) of the inner structure, the outer support walls (153) of the outer structure of the two adjacent segments (11, 12) in a thickness direction (D1) of the walls, and the walls further comprise a main shield layer (18) disposed inside the inner structure, the main shield layer extending across the two adjacent segments (11, 12) and the connection region (13) in a connection direction (D2) along the two adjacent segments.

2. Storage container according to claim 1, characterized in that the connection assembly (20) comprises a connection body (21), the connection body (21) being positioned between the insulation layers (152) of the outer structures (15) of two adjacent segments (11, 12).

3. Storage container according to claim 2, wherein the connecting body (21) is provided with two first through holes (213), each extending through the connecting body (21) in the thickness direction (D1), and abutting against the two adjacent segments (11, 12),

and the connecting assembly comprises two first connecting pieces (241), the two first connecting pieces respectively penetrate through the two through holes (213), the outer ends of the first connecting pieces are directly or indirectly fixedly connected with the outer supporting wall (153) of the outer layer structure, and the inner ends of the first connecting pieces (241) are directly or indirectly fixedly connected with the outer supporting wall (143) of the inner layer structure.

4. A storage container according to claim 3, wherein the connecting assembly (20) further comprises at least one fixing (22, 23) located inside the connecting body, the inner end of the first connecting member (241) being fixedly connected to the outer support wall (143) of the inner layer structure via the at least one fixing.

5. The storage container of claim 4, wherein the at least one securing member comprises:

-a first fixing element (22) positioned between the inner supporting walls (151) of the outer structure (15) of the two adjacent sections (11, 12), the inner end of each first connecting element (241) being locked on the first fixing element (22);

a second fixing element (23) fixed inside the outer supporting wall (143) of the respective inner layer structure (14) of the 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).

6. Storage vessel according to any of claims 3-5, wherein the first connecting member (241) is a bolt and the coupling assembly (20) further comprises a embedment plate (27) positioned outside the outer support wall (153) of the outer structure, the embedment plate having a nut member (242) fastened to its inner side surface extending through the outer support wall (153) of the outer structure, the outer end of the first connecting member being locked by the nut member.

7. Storage container according to claim 5, wherein the second connecting member (251) is a stud, wherein the first fixing member (22) and the second fixing member (23) are provided with a central through hole (222, 231) extending in the direction of the axis (X) of the stud, and wherein the second connecting member (251) extends through the central through hole of the first fixing member and the second fixing member and is locked by a nut member (252) at the inner side of the second fixing member.

8. Storage container according to claim 7, characterized in that the connection assembly (20) further comprises a filler (26) positioned inside the second fixing part (23), the filler being provided with a nut receiving portion open towards the outside, and the body of the filler being an insulating structure, the wall (262) of the filler facing the main shield being a supporting structure.

9. Storage container according to any one of claims 2-5, 7-8, characterized in that the connecting body has an outer contour constituting a cylinder, the connecting body being positioned with its axis perpendicular to the wall (100), and in that the two first through holes are arranged radially symmetrically with respect to the axis; or the connecting body has an outer contour forming a cuboid.

10. The storage container according to claim 9, 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.

11. Storage container according to claim 10, characterized in that the dimension of the cabling channel in the thickness direction (D1) of the wall is 1/2-4/5 of the dimension of the connecting body; in the connecting direction (D2), the dimension of the cabling channel is 1/5-1/3 of the dimension of the connecting body.

12. The storage container of any one of claims 2-5, 7-8, wherein for each of the outer layer structure and the inner layer structure: the thickness of the insulating layer is larger than that of the inner support wall; and/or the outer support wall and the inner support wall are made of the same material and have the same thickness as the inner support wall.

13. The storage container of claim 12, wherein for each of the outer layer structure and the inner layer structure: the inner support walls (141, 151) and the outer support walls are made of insulated plywood; the insulating layer (142, 152) is made of a PUF.

14. Storage container according to any of claims 2-5, 7-8, characterized in that the main shielding comprises a plate (181) detachably attached to the inner support wall (141) of the inner layer structure by means of an anchor assembly and shielding corrugations (182), the shielding corrugations (182) being located inside the connection area.

15. The storage container according to claim 14, wherein the anchor assembly includes an anchor (31) extending from the flat plate (181) to an outside and an anchor receiving groove (321) provided on the inner support wall (141) to be opened toward the anchor, the anchor receiving groove (321) and the anchor (31) being shaped so that the anchor can be inserted into the anchor receiving groove and rotated by a predetermined angle in a rotation plane perpendicular to an insertion direction to reach a locked position.

16. Storage container according to claim 15, wherein the anchor (31) comprises an anchor body (311) protruding outwards from the plate and an anchor lock (312) protruding radially outwards at the outer end of the anchor body, wherein the anchor body (311) is a cylinder with an axis perpendicular to the wall and the anchor lock (312) is an elongated structure protruding in a radial direction of the anchor body.

17. Storage container according to any one of claims 2-5, 7-8, characterized in that the wall (100) further comprises a secondary shielding layer (19) between the inner and outer layer structures, which secondary shielding layer (19) extends across the first section (11), the second section (12) and the connection region (13) in a connection direction (D2) of the first section (11), the second section (12).

18. Storage container according to claim 17, wherein the secondary shielding layer (19) is formed by a plurality of secondary shielding layer units connected together and adjacent secondary shielding layer units (191, 192) are connected together by the inner support wall (151) fixed to the same outer structure, and,

the primary barrier extends completely and continuously along the entire wall of the storage vessel to define an enclosed space configured for containing liquefied gas; the secondary shielding layer integrally connected extends completely and continuously along the extending direction of the whole wall so as to define another closed space independent of the closed space between the secondary shielding layer and the main shielding layer.

19. A storage container according to claim 18, wherein the inner support wall (151) of the outer structure defines a slot (151 a) for partially receiving a card strip (41), the card strip (41) including a first portion and a second portion forming a T-shaped structure, the first portion being received in the slot (151 a), the second portion extending to engage the outer support wall (143) of the inner structure, and wherein adjacent shield layer elements (191, 192) each have a bent section (1911 a, 1912 a) at the card strip for engaging and welding with the second portion of the card strip.

20. Storage container according to claim 17, characterized in that a space is present between the secondary shielding layer (19) and the inner layer structure (14).

21. The storage container of claim 1, wherein the wall comprises a plurality of segments arranged in an array.

22. A method of assembling the walls of a storage container according to any of claims 1-21, comprising the steps of:

a preamble mounting step (S1) including fixing a portion of the coupling assembly to the base layer;

an outer structure mounting step (S2), the outer structure setting step including:

securing the modular outer layer structure of the first and second segments to the base layer (S21);

installing a connecting body of the connecting assembly between the outer structures of the first and second sections and fixedly connecting the connecting body and the portion of the connecting assembly (S22);

an inner layer structure mounting step (S4) including:

placing the modular inner structure of the first section inside the outer structure of the first section and the modular inner structure of the second section inside the outer structure of the second section (S41);

installing another portion of the connection assembly between the outer structures of the first and second segments and connecting the another portion and the connection body directly or indirectly (S42); and

a main shield mounting step (S5) including providing a main shield inside the inner layer structure of the first and second sections.

23. The method according to claim 22, wherein said preamble mounting step (S1) comprises: fixing the embedded plate on the concrete base layer; mounting a nut component on the top of the embedded plate;

and the outer-layer structure mounting step (S2) includes:

penetrating a bolt through the connection body such that an outer end of the bolt is locked by the nut member; and

24. The method of claim 23, wherein the inner layer structure mounting step (S4) comprises:

25. The method of any one of claims 21-24, further comprising a secondary shield installation step (S3) between the outer structure installation step and the inner structure installation step, the secondary shield installation step comprising: and fixing the secondary shielding layer units on the outer side of the inner support wall of the outer structure so that the adjacent secondary shielding layer units are connected into an integrated secondary shielding layer, wherein the integrated secondary shielding layer spans the first section, the second section and the connecting area in the connecting direction of the first section and the second section.