Storage tank for storing and transporting fluid

Abstract

The utility model discloses a storage tank used for storing and transporting fluid, the storage tank comprises a wall and an internal containing space defined by the wall, the wall comprises a first layer assembly and a second layer assembly which are arranged in a stacked mode, the first layer assembly is located on the inner side of the second layer assembly, the first layer assembly comprises a first shielding layer and a first heat insulation module located on the outer side of the first shielding layer, the second layer assembly comprises a second shielding layer directly connected with the first heat insulation module and a second heat insulation module located on the outer side of the second shielding layer, and the first shielding layer and the second shielding layer are both made of metal corrugated plates. And crisscrossed corrugations are arranged on the metal corrugated plate. According to the storage tank, an invar plate is not adopted, the overall production cost is reduced, the problem that goods supply is difficult is solved, the two layers of corrugated metal plates both have good tensile strength, pressure caused by contents and airflow to the wall can be compensated, and the storage tank can keep good performance for a long time.

Description

Technical Field

[0001] The utility model relates to the field of storage equipment, and specifically to a storage tank for storing and transporting fluids. The utility model particularly relates to a marine or land-based storage tank for containing liquefied natural gas. Background Art

[0002] Existing storage containers for gas, liquid or liquefied gas all need to have good sealing and heat preservation properties. In order to achieve these requirements, existing storage containers usually include a multi-layer wall structure. During the storage process, the multi-layer wall structure not only has to bear the pressure from the contents of the storage container, but also the pressure of the airflow between the multi-layer walls. If the local pressure of the wall is too large, it may deform or even rupture, reducing the storage reliability and safety.

[0003] In particular, the demand for storage and transportation of liquefied natural gas (LNG) in the storage and transportation industry has increased year by year. This is because LNG has always been the preferred energy source to replace oil with its green, environmentally friendly and efficient advantages, and has become one of the fastest-growing energy industries in the world. With the rapid development of my country's economy and the continuous improvement of environmental governance requirements, the application and development of LNG has received more and more attention from all parties. The importance of LNG has become increasingly prominent, which has led to a rapid increase in society's demand for clean energy. One of the key directions for China's clean energy development in the future is LNG.

[0004] The main components of an LNG receiving station are dock unloading, LNG storage, process processing and external transmission. Among them, the LNG storage tanks that undertake the storage task have the longest construction period, the most advanced technology, and the most difficulties in the construction process. They have always been managed as the key path of the entire project. In addition, the structural form and technological innovation of LNG storage tanks are also the focus of attention of domestic and international peers in the industry.

[0005] During the storage and transportation of LNG, the tank will be subjected to the pressure from the liquefied natural gas and the pressure of the interlayer airflow. If the local pressure on the wall is too large, it may deform or even rupture, reducing the reliability and safety of storage. In addition, the LNG tanks currently on the market use Invar steel as the secondary shielding layer, which is expensive, used in small quantities, and has poor supply. The insulation layer of the LNG tank is difficult to fix. The common solution is to embed fixings from the outer tank concrete or fix it by gluing, which has the problem of complex construction and many processes.

[0006] Therefore, it is necessary to provide a tank for storing and transporting fluid to at least partially solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a storage tank for storing and transporting fluids, in particular, a land-based or ship-based storage tank for storing and transporting liquefied natural gas. The wall of the storage tank of the utility model has a two-layer structure, and the inner side of each layer is a corrugated metal plate instead of an Invar plate, which reduces the overall production cost and solves the problem of supply difficulties. In addition, the two layers of corrugated metal plates have good tensile strength and can compensate for the pressure on the wall caused by the contents and airflow, so that the storage tank can maintain good performance for a long time, especially good sealing. Furthermore, the utility model fixes the insulation module of the first layer assembly by prefabricating the anchor block on the inner surface of the insulation module of the second layer assembly, eliminating the conventional method of pre-embedded plates on the concrete tank wall, thereby reducing the construction difficulty, improving efficiency, and reducing costs.

[0008] According to one aspect of the utility model, a storage tank for storing and transporting fluid is provided, the storage tank comprising a wall and an internal containing space defined by the wall, the wall comprising a first layer component and a second layer component arranged in a stacked manner, the first layer component being located on the inner side of the second layer component, wherein the first layer component comprises a first shielding layer and a first insulation module being located on the outer side of the first shielding layer, the second layer component comprises a second shielding layer directly connected to the first insulation module and a second insulation module being located on the outer side of the second shielding layer, wherein the first shielding layer directly contacts the contents of the storage tank, the first shielding layer and the second shielding layer are both made of a corrugated metal plate, the corrugated metal plate being provided with corrugations that cross each other horizontally and vertically, and each of the corrugations penetrates the corrugated metal plate along the extension direction of the corrugated metal plate.

[0009] In one embodiment, the first insulation module and the second insulation module each include: an insulation body layer, an inner plywood layer located on an inner surface of the insulation body layer, and an outer plywood layer located on an outer surface of the insulation body layer.

[0010] In one embodiment, the outer plywood layer of the first layer assembly is provided with gap grooves adapted to the corrugations of the metal corrugated plate of the second layer assembly.

[0011] In one embodiment, a plurality of first anchor blocks are disposed on the inner surface of the inner plywood layer of the first thermal insulation module, and the first shielding layer is welded to the plurality of first anchor blocks, so that the first shielding layer and the first thermal insulation module are fixed together.

[0012] In one embodiment, a plurality of second anchor blocks are prefabricated on the inner surface of the inner plywood layer of the second insulation module, the second shielding layer is fixed to the second insulation module via the second anchor blocks, and the first insulation module is also fixed together with the second insulation module via the second anchor blocks.

[0013] In one embodiment, the second shielding layer is welded to the second anchoring block.

[0014] In one embodiment, a stud is welded on the inner surface of the second anchor block, and the stud extends through the outer plywood layer of the first insulation module and enters the insulation body layer of the first insulation module. The inner end of the stud is provided with a nut that abuts against the inner side of the outer plywood layer of the first insulation module, so that the first insulation module is fixed to the second insulation module through the cooperation of the stud and the nut.

[0015] In one embodiment, the second anchor block is flush with the inner surface of the inner plywood layer of the second insulation module.

[0016] In one embodiment, for each of the first insulation module and the second insulation module, the insulation body layer, the inner plywood layer, and the outer plywood layer are pre-installed together in a glue lamination manner.

[0017] In one embodiment, a cement outer wall coated with a moisture-proof isolation membrane is disposed on the outer side of the second layer assembly, and resin mastic is filled between the cement outer wall and the second layer assembly.

[0018] In one embodiment, the walls of the tank are free of Invar plates.

[0019] In one embodiment, the storage tank is a storage tank for storing liquefied natural gas, and the storage tank is a land-based storage tank or a ship storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0021] Figure 1 It is an exploded schematic diagram of a section of a wall of a storage container according to a preferred embodiment of the utility model;

[0022] Figure 2 This is a schematic exploded view of another perspective of the wall of the storage container of this embodiment, wherein Figure 2 The area of ​​the section cut from Figure 1 The area of ​​the section cut out;

[0023] Figure 3 The cross section defined by the D3 direction and the D1 direction is Figure 2A cross-sectional view of the section shown in FIG.

[0024] Reference numerals:

[0025] 21First layer components

[0026] 211 first shielding layer

[0027] 2111 Longitudinal corrugation of the first shielding layer

[0028] 2112 Transverse corrugation of the first shielding layer

[0029] 212 first insulation module

[0030] 2121 Inner plywood layer of the first insulation module

[0031] 2122Insulation main layer of the first insulation module

[0032] 2123 Outer plywood layer of the first insulation module

[0033] 2123a Clearance slot

[0034] 31 Second layer components

[0035] 311 second shielding layer

[0036] 312 Second insulation module

[0037] 3121 Inner plywood layer of the second insulation module

[0038] 3122 Insulation main layer of the second insulation module

[0039] 3123External plywood layer of the second insulation module

[0040] 41 resin cement

[0041] 51 cement outer wall

[0042] 61 Second anchor block

[0043] 71 first anchor block

[0044] 62 studs

[0045] 63 Nut DETAILED DESCRIPTION

[0046] Now, with reference to the accompanying drawings, the specific embodiments of the present invention are described in detail. What is described here is only the preferred embodiment of the present invention. Those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and the other ways also fall within the scope of the present invention.

[0047] The utility model provides a storage tank. As an example, the storage tank may be a land-based storage tank or a ship storage tank for storing liquefied natural gas.

[0048] First of all, it should be noted that the directional terms and position terms mentioned in this utility model are only exemplary descriptions and not restrictive descriptions. Figure 1-Figure 3 The positions and directions of the components shown in the figure should be understood. The description of the position of the components should be understood as relative positions rather than absolute positions, and the description of the extension direction of the components should be understood as relative directions rather than absolute directions. For example, in the present utility model, "inside" and "inward" can be understood as the side of the wall of the storage container that contains the fluid and the direction toward the side that contains the liquefied gas; "outside" and "outward" are the side of the wall that faces the outside world and the direction toward the outside world. The inside and outside directions are Figure 1 and Figure 2 In the figure, D1 is shown. In addition, there are directions D2 and D3 that are perpendicular to the direction D1. The directions D2 and D3 can be understood as the longitudinal direction and the transverse direction, respectively. The three directions D1, D2, and D3 are orthogonal in space.

[0049] First reference Figure 1 The storage tank includes a wall, which defines the internal storage space of the storage tank. The wall includes a first layer assembly 21 and a second layer assembly 31 stacked in the D1 direction, and the first layer assembly 21 is located on the inner side of the second layer assembly 31, that is, the first layer assembly 21 is closer to the contents of the storage tank. The first layer assembly 21 includes a first shielding layer and a first insulation module 212 located outside the first shielding layer. The first shielding layer 211 directly contacts the contents of the storage tank. The first shielding layer 211 is made of a corrugated metal plate, and the corrugated metal plate is provided with corrugations that cross horizontally and vertically, and each corrugation penetrates the corrugated metal plate along the extension direction of the corrugated metal plate. Specifically, the first shielding layer 211 includes a longitudinal corrugation 2111 that penetrates the shielding layer along the longitudinal direction D1 and a transverse corrugation 2112 that penetrates the shielding layer along the transverse direction D2.

[0050] The first insulation module 212 further includes an insulation main body layer 2122, an inner plywood layer 2121 located on the inner surface of the insulation main body layer 2122, and an outer plywood layer 2123 located on the outer surface of the insulation main body layer 2122. The thickness (dimension along the D3 direction) of the insulation main body layer 2122 is greater than the thickness of the inner plywood layer 2121 and the outer plywood layer 2123.

[0051] The second layer assembly 31 includes a second shielding layer 311 directly connected to the first insulation module 212 and a second insulation module 312 located outside the second shielding layer 311. The second shielding layer 311 is also made of a metal corrugated plate, and the metal corrugated plate is provided with corrugations that cross each other in a horizontal and vertical direction, and each corrugation penetrates the metal corrugated plate along the extension direction of the metal corrugated plate. Specifically, the second shielding layer 311 includes a longitudinal corrugation 3111 that penetrates the shielding layer along the longitudinal direction D2 and a transverse corrugation 3112 that penetrates the shielding layer along the transverse direction D2.

[0052] A cement outer wall 51 coated with a moisture-proof isolation film is disposed on the outer side of the second layer component 31 , and resin cement 41 is filled between the cement outer wall 51 and the second layer component 31 .

[0053] Figure 1 Only one section of the wall of the tank is shown in FIG. 1 . It can be understood that several sections are connected and laid flat in an extension plane defined by the directions D1 and D2 , and together constitute a wall extending in the extension plane.

[0054] Preferably, the outer plywood layer of the first layer assembly 21 is provided with a gap groove 2123a adapted to the corrugation of the second shielding layer 311 of the second layer assembly 31. The corrugation of the second shielding layer 311 of the second layer assembly 31 can be adaptively accommodated in the gap groove 2123a, so that the first layer assembly 21 and the second layer assembly 31 fit tightly.

[0055] refer to Figure 2 The inner surface of the inner plywood layer 2121 of the first insulation module 212 is provided with a plurality of first anchoring blocks 71, and the first anchoring blocks 71 may be preset on the inner plywood layer 2121 of the first insulation module 212, for example. The first shielding layer 211 is welded to the plurality of first anchoring blocks 71, so that the first shielding layer 211 and the first insulation module 212 are fixed together.

[0056] The inner surface of the inner plywood layer 3121 of the second insulation module 312 is prefabricated with a plurality of second anchor blocks 61, and the second shielding layer 311 is fixed to the second insulation module 312 via the second anchor blocks 61, and the first insulation module 212 is also fixed to the second insulation module 312 via the second anchor blocks 61. In this embodiment, the second shielding layer 311 is welded to the second anchor blocks 61 of the inner plywood layer 3121 of the second insulation module 312, but in other embodiments, the second shielding layer 311 may also be fixed to the second insulation module 312 by bolts or the like.

[0057] refer to Figure 3A stud 62 is welded on the inner surface of the second anchor block 61, and the stud 62 extends through the outer plywood layer 2131 of the first insulation module 212 and enters the insulation main layer 2122 of the first insulation module 212. The inner end of the stud 62 is provided with a nut 63 that abuts against the inner side of the outer plywood layer 3121 of the first insulation module 212, so that the first insulation module 212 is fixed to the second insulation module 312 through the cooperation of the stud 62 and the nut 63.

[0058] It can be seen that in this embodiment, the second anchor block 61 can play two roles at the same time: anchoring and fixing the second shielding layer 311; and fixing the first insulation module 212 of the first layer component 21 and the second insulation module 312 of the second layer component 31 together.

[0059] There are multiple first anchor blocks 71 and multiple second anchor blocks 61. Multiple first anchor blocks 71 are arranged in an array with equal spacing, and multiple second anchor blocks 61 can also be arranged in an array with equal spacing. The spacing between multiple first anchor blocks 71 can be equal to, less than or greater than the spacing between multiple second anchor blocks 61. Preferably, each first anchor block 71 and each second anchor block 61 can be aligned or not aligned in the D3 direction.

[0060] Preferably, continue to refer to Figure 3 , the second anchor block 61 is flush with the inner surface of the inner plywood layer 3121 of the second insulation module 312. This configuration allows the first layer assembly 21 and the second layer assembly 31 to be tightly joined, and there is no gap between the layers in the D3 direction. Preferably, the top surface of the first anchor block 71 can also be flush with the top surface of the inner plywood layer 2121 of the first insulation module 212, so that there is no gap between the first shielding layer 211 and the first insulation module 212.

[0061] In this embodiment, in the first insulation module 212, the insulation main body layer 2122, the inner plywood layer 2121, and the outer plywood layer 2123 are pre-installed together by glue lamination. In the second insulation module 312, the insulation main body layer 3122, the inner plywood layer 3121, and the outer plywood layer 3123 are pre-installed together by glue lamination.

[0062] The wall of the storage tank of the utility model has a two-layer structure, and the inner side of each layer is a corrugated metal plate instead of an invar plate, which reduces the overall production cost and solves the problem of supply difficulties. In addition, the two layers of corrugated metal plates have good tensile strength and can compensate for the pressure caused by the contents and airflow on the wall, so that the storage tank can maintain good performance for a long time, especially good sealing. Furthermore, the utility model fixes the insulation module of the first layer assembly by prefabricating the anchor block on the inner surface of the insulation module of the second layer assembly, eliminating the conventional method of pre-embedded plates on the concrete tank wall, which reduces the construction difficulty, improves efficiency, and reduces costs.

[0063] The above description of various embodiments of the present invention is provided to a person of ordinary skill in the relevant art for the purpose of description. It is not intended to exclude or limit the present invention to a single disclosed embodiment. As above, a person of ordinary skill in the field of the above teachings will understand the various substitutions and variations of the present invention. Therefore, although some alternative embodiments are specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. The present invention is intended to include all substitutions, modifications and variations of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention described above.

Claims

1. A storage tank for storing and transporting fluids, the storage tank comprising a wall and an internal accommodation space defined by the wall, the wall comprising a first layer component (21) and a second layer component (31) arranged in a stacked manner, the first layer component (21) being located on the inner side of the second layer component (31), wherein: The first layer component (21) includes a first shielding layer (211) and a first insulation module (212) located outside the first shielding layer, and the second layer component (31) includes a second shielding layer (311) directly connected to the first insulation module (212) and a second insulation module (312) located outside the second shielding layer (311), wherein the first shielding layer (211) directly contacts the contents of the storage tank, and the first shielding layer (211) and the second shielding layer (311) are both made of a corrugated metal plate, and the corrugated metal plate is provided with corrugations that cross each other horizontally and vertically, and each of the corrugations penetrates the corrugated metal plate along the extension direction of the corrugated metal plate.

2. The storage tank according to claim 1, characterized in that: The first insulation module (212) and the second insulation module (312) each include: an insulation main body layer (2122, 3122), an inner plywood layer (2121, 3121) located on the inner surface of the insulation main body layer, and an outer plywood layer (2123, 3123) located on the outer surface of the insulation main body layer.

3. The storage tank according to claim 2, characterized in that: The outer plywood layer (2123) of the first layer component (21) is provided with gap grooves (2123a) adapted to the corrugations of the metal corrugated plate of the second layer component (31).

4. The storage tank according to claim 2, characterized in that: The inner surface of the inner plywood layer (2121) of the first thermal insulation module (212) is provided with a plurality of first anchoring blocks (71), and the first shielding layer (211) is welded to the plurality of first anchoring blocks (71), so that the first shielding layer (211) and the first thermal insulation module (212) are fixed together.

5. The storage tank according to claim 2, characterized in that: A plurality of second anchor blocks (61) are prefabricated on the inner surface of the inner plywood layer of the second thermal insulation module (312); the second shielding layer (311) is fixed to the second thermal insulation module (312) via the second anchor blocks (61); and the first thermal insulation module (212) is also fixed together with the second thermal insulation module (312) via the second anchor blocks (61).

6. The storage tank according to claim 5, characterized in that: The second shielding layer (311) is welded to the second anchoring block (61).

7. The storage tank according to claim 5, characterized in that: A stud (62) is welded on the inner surface of the second anchor block (61), and the stud (62) extends through the outer plywood layer of the first insulation module (212) and enters the insulation body layer of the first insulation module (212). The inner end of the stud (62) is provided with a nut (63) that abuts against the inner side of the outer plywood layer of the first insulation module (212), so that the first insulation module (212) is fixed to the second insulation module (312) through the cooperation of the stud (62) and the nut (63).

8. The storage tank according to claim 5, characterized in that: The second anchor block (61) and the inner surface of the inner plywood layer of the second insulation module (312) are flush.

9. The storage tank according to claim 2, characterized in that: For each of the first insulation module (212) and the second insulation module (312), the insulation body layer (2122, 3122), the inner plywood layer (2121, 3121), and the outer plywood layer (2123, 3123) are pre-installed together in a glue lamination manner.

10. The storage tank according to any one of claims 1 to 9, characterized in that: A cement outer wall (51) coated with a moisture-proof isolation film is provided on the outer side of the second layer component (31), and resin cement (41) is filled between the cement outer wall (51) and the second layer component (31).

11. The storage tank according to any one of claims 1 to 9, characterized in that: The walls of the tank do not have Invar plates.

12. The storage tank according to any one of claims 1 to 9, characterized in that: The storage tank is a storage tank for storing liquefied natural gas, and the storage tank is a land-based storage tank or a ship-based storage tank.

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