Thin film layer structure of liquid hydrogen storage cavern
By dividing the film layer structure of the liquid hydrogen reservoir into multiple rectangular modules of different sizes and connecting them through sector-like modules and upper and lower arc-shaped modules, the problem of uneven stress distribution in the film structure is solved, and better low-temperature stress tolerance and cost reduction are achieved.
Patent Information
- Application Number
- CN202421243139.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing liquid hydrogen storage film structure is difficult to evenly distribute stress, resulting in insufficient ability to withstand stress in low-temperature environments, and there are many types of molds and high costs.
A liquid hydrogen storage thin layer structure is designed, and the shell wall, the shell top and the shell bottom are divided into multiple rectangular modules of different sizes, and connected to the whole through a sector-like module and an upper and lower arc-shaped module, so as to achieve uniform distribution of wrinkle units.
It achieves good stress distribution inside the film layer, can better withstand low-temperature stress, and at the same time reduces the number of welds and welding workload, and reduces production costs.
Smart Images
Figure CN222651064U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-temperature storage, in particular to a thin film layer structure of a liquid hydrogen storage tank. Background Art
[0002] Currently, the main form of hydrogen energy application is high-pressure gaseous hydrogen storage. Compared with the high-pressure gaseous hydrogen storage and supply mode, the low-temperature liquid hydrogen storage and supply mode has the advantages of higher hydrogen storage density, low transportation cost, high vaporization purity, low storage and transportation pressure and high safety of use, which can effectively control the overall cost.
[0003] Liquid hydrogen storage tanks are capable of storing liquid hydrogen in large capacity, low pressure and high purity. In the prior art, thin film insulated concrete storage tanks are generally used to store liquid hydrogen. The design of the thin film structure includes the following difficulties: first, how to design the internal structure of the thin film so that the entire liquid hydrogen storage film layer can withstand good stress; second, how to reduce the splicing welds; and third, how to reduce the types of molds with fewer universal modules to reduce costs.
[0004] In the prior art, for example, the paper "Analysis of Key Factors and Optimization of Inner Tank Marking for Ultra-Large LNG Membrane-Type Land Storage Tanks" mentions the division of membrane structure. In this scheme, the bottom is divided into multiple sectors, and the side is divided into multiple small squares based on the bottom. However, this method is not conducive to the structural composition of a single corrugated membrane block, that is, it is not conducive to uniformly distributing the corrugated parts that absorb low-temperature stress to various parts of the membrane structure, and the docking between the various corrugated membrane blocks cannot obtain a good stress distribution.
[0005] In view of this, the utility model provides a liquid hydrogen storage thin film layer structure with good stress distribution. Utility Model Content
[0006] In order to solve the problem that stress cannot be evenly distributed in the existing film structure, the utility model proposes a liquid hydrogen storage film layer structure.
[0007] The utility model is realized by the following technical solutions:
[0008] The utility model proposes a liquid hydrogen storage thin film layer structure comprising a shell top, a shell bottom and a shell wall, wherein:
[0009] The shell wall includes a plurality of side walls, each of which includes two rectangular side modules connected up and down, and the plurality of side walls are alternately connected to form a polygon through arc-shaped side modules to form the shell wall;
[0010] The shell top includes an inner ring, a middle ring and an outer ring, wherein the inner ring is composed of a plurality of inner ring rectangular modules arranged axially around the center, and adjacent inner ring rectangular modules are connected by fan-shaped modules, the middle ring is composed of a plurality of middle ring rectangular modules arranged axially around the center, and adjacent middle ring rectangular modules are connected by fan-shaped modules, the outer ring is composed of a plurality of outer ring rectangular modules arranged axially around the center, and adjacent outer ring rectangular modules are connected by fan-shaped modules, and the inner ring, the middle ring and the outer ring are connected in sequence from the center to the outside and form the shell top;
[0011] The shell bottom includes an inner ring, a middle ring and an outer ring which are identical to the shell top and connected in sequence, and the shell bottom also includes a central module and a central connection module. The central module is connected to the inner side of the inner ring through the central connection module, and forms the shell bottom with the inner ring, the middle ring and the outer ring;
[0012] The top and bottom of the shell wall are connected to the shell top and shell bottom respectively through upper and lower arc modules.
[0013] Furthermore, each of the fan-shaped modules is of equal size.
[0014] Furthermore, a plurality of pleat units are distributed on the side rectangular module, the inner ring rectangular module, the middle ring rectangular module, the outer ring rectangular module, the central module, the upper and lower arc modules and the fan-shaped module, and the pleat units are square.
[0015] Furthermore, the size of the outer ring rectangular module is 5n*5n, where n is the side length of the square fold unit.
[0016] Furthermore, the size of the middle ring rectangular module is 3n*5n.
[0017] Furthermore, the size of the inner ring rectangular module is 1n*5n.
[0018] Furthermore, the size of the side rectangular module is 14n*7n.
[0019] Furthermore, the size of the central module is 4n*4n.
[0020] Beneficial effects of the utility model:
[0021] (1) The liquid hydrogen storage thin film layer structure proposed in the utility model divides the shell wall, shell top and shell bottom of the liquid hydrogen storage thin film layer into a plurality of rectangular modules of different sizes, and connects them into a whole through fan-shaped modules and upper and lower arc modules. The pleated units can be better evenly distributed on each module, so that the entire thin film layer can achieve good stress distribution inside and can better withstand low-temperature stress.
[0022] (2) The liquid hydrogen storage thin film layer structure proposed in the utility model divides the shell wall, shell top and shell bottom of the liquid hydrogen storage thin film layer into a plurality of rectangular modules of different sizes. The rectangular modules of different sizes can be manufactured using a single mold, and the mold has strong versatility and lower cost.
[0023] (3) The thin film layer structure of the liquid hydrogen storage tank proposed in the utility model divides the thin film layer of the liquid hydrogen storage tank into rectangular modules of different sizes and connects them through fan-shaped modules and upper and lower arc modules. The number of welds and welding workload in the entire liquid hydrogen storage tank are reduced, and the construction is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The overall structural diagram of the thin film layer structure of the liquid hydrogen storage tank provided by the utility model;
[0025] Figure 2 A shell top structure diagram of a thin film layer structure of a liquid hydrogen storage tank provided by the utility model;
[0026] Figure 3 Shell bottom structure diagram of the thin film layer structure of the liquid hydrogen storage tank provided by the utility model
[0027] In the figure: side rectangular module 1, upper and lower arc modules 2, side arc modules 3, inner ring rectangular module 4, middle ring rectangular module 5, outer ring rectangular module 6, center module 7, fan-shaped module 8, center connection module 9, pleat unit 10;
[0028] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0029] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.
[0030] Please refer to Figure 1-Figure 3 The utility model proposes a liquid hydrogen storage thin film layer structure including a shell top, a shell bottom and a shell wall, wherein:
[0031] The shell wall includes a plurality of side walls, each of which includes two rectangular side modules 1 connected up and down, and the plurality of side walls are alternately connected to form a polygon through arc-shaped side modules 3 to form the shell wall;
[0032] The shell top includes an inner ring, a middle ring and an outer ring. The inner ring is composed of a plurality of inner ring rectangular modules 4 arranged axially around the center, and the adjacent inner ring rectangular modules 4 are connected by a fan-shaped module 8. The middle ring is composed of a plurality of middle ring rectangular modules 5 arranged axially around the center, and the adjacent middle ring rectangular modules 5 are connected by a fan-shaped module 8. The outer ring is composed of a plurality of outer ring rectangular modules 6 arranged axially around the center, and the adjacent outer ring rectangular modules 6 are connected by a fan-shaped module 8. The inner ring, the middle ring and the outer ring are connected in sequence from the center to the outside to form the shell top.
[0033] The shell bottom includes an inner ring, a middle ring and an outer ring which are identical to the shell top and connected in sequence. The shell bottom also includes a central module 7 and a central connection module 9. The central module 7 is connected to the inner side of the inner ring through the central connection module 9 and forms the shell bottom with the inner ring, the middle ring and the outer ring.
[0034] The top and bottom of the shell wall are connected to the shell top and shell bottom respectively through the upper and lower arc modules 2.
[0035] In this embodiment:
[0036] The central connection module 9 is used to connect the central module 7 and the inner ring;
[0037] The side arc module 3 is used to connect the side walls;
[0038] The fan-shaped module 8 is used to connect the adjacent inner ring rectangular modules 4, the adjacent middle ring rectangular modules 5 and the adjacent outer ring rectangular modules 6;
[0039] The upper and lower arc modules 2 have a certain angle and are used to connect the shell wall and the shell top and shell bottom;
[0040] In a specific implementation, taking the thin film layer structure of a liquid hydrogen storage tank with a hexagonal diameter of more than 10 meters as an example, the fan-shaped module 8 is composed of two groups of fan-shaped blocks with equal adjacent sides formed by two right-angled triangles spliced by bevels, and the adjacent inner ring rectangular modules 4, the adjacent middle ring rectangular modules 5, and the adjacent outer ring rectangular modules 6 are connected by the two long sides of the fan-shaped module 8. The outer sides of the inner ring rectangular modules 4 and the short sides of the inner ring fan-shaped modules 8 are connected to the inner sides of the middle ring rectangular modules 5, and the outer sides of the middle ring rectangular modules 5 and the short sides of the middle ring fan-shaped modules 8 are connected to the inner sides of the outer ring rectangular modules 6 to form a shell top. The structure of the shell top and the shell is the same except for the center part. A part of the shell top needs to be reserved for the subsequent placement of pipeline integration for transporting liquid hydrogen. The central module 7 is connected to the inner ring through four central connection modules 9, and the upper and lower arc modules 2 on both sides of the shell wall are connected to the outer sides of the outer ring rectangular modules 6 and the short sides of the outer ring fan-shaped modules 8. The shell top, shell bottom and shell wall together constitute the thin film layer structure of the liquid hydrogen storage tank.
[0041] In one embodiment, the utility model divides the film layer of the entire liquid hydrogen storage tank into a plurality of rectangular modules of different sizes, and connects them into a hexagonal whole through the upper and lower arc modules 2, the center connection module 9 and the fan-shaped module 8, which can ensure that the liquid hydrogen storage tank can better withstand the low-temperature stress of liquid hydrogen. At the same time, there are fewer splicing welds, and each rectangular module can use the same mold, so that the production cost of the entire liquid hydrogen storage tank is lower and the construction is more convenient.
[0042] In one embodiment, the hexadecagon is a preferred embodiment of the utility model. When in use, the shape of the liquid hydrogen storage film layer can also be selected according to actual conditions, such as a dodecagon, an octagon, etc., and the size and number of each module can be determined according to the shape. The fan-shaped module 8, the center connection module 9, the side arc module 3 and the upper and lower arc modules 2 can be used for connection to achieve the same effect.
[0043] Furthermore, each of the fan-shaped modules 8 is equal in size.
[0044] In a specific implementation, due to the proportions of the outer ring rectangular module 6, the middle ring rectangular module 5 and the inner ring rectangular module 4, the size of each fan-shaped module 8 connecting rectangular modules of different sizes is equal, which is more convenient, faster and less costly during construction and processing.
[0045] Furthermore, a plurality of pleat units 10 are distributed on the side rectangular module 1, the inner ring rectangular module 4, the middle ring rectangular module 5, the outer ring rectangular module 6, the central module 7, the upper and lower arc modules 2 and the fan-shaped module 8, and the pleat units 10 are square.
[0046] In a specific embodiment, the pleat unit 10 is a square as a whole, and has a cross-shaped cross corrugated portion. Taking the hexadecagonal film layer structure as an example, the inner ring rectangular module 4, the middle ring rectangular module 5, the outer ring rectangular module 6, the central module 7 and the side rectangular module 1 are all composed of the pleat unit 10, wherein the pleat unit 10 is a 1×1 square module, the outer ring rectangular module 6 is a module having a plurality of pleat units 10 arranged in a 5×5 manner, the middle ring rectangular module 5 is a module having a plurality of pleat units 10 arranged in a 3×5 manner, and the inner ring rectangular module 4 is a module having a plurality of pleat units 10 arranged in a 1×5 manner, and the central module 7 of the shell bottom is a module having a plurality of pleat units 10 arranged in a 4×4 manner. The side rectangular module 1 is a module composed of multiple pleated units 10 arranged in a 14×7 manner. At the same time, pleated units 10 are evenly distributed on the midline of the fan-shaped module 8 and on the upper and lower arc modules 2. The pleated units 10 are used to absorb the low-temperature stress of liquid hydrogen and prevent the film from being damaged by the liquid hydrogen stress. Since the entire film layer is formed by connecting multiple rectangular modules of different sizes, multiple pleated units 10 can be evenly distributed on rectangular modules of different sizes, and then the upper and lower arc modules 2 are used to connect with the smaller fan-shaped module 8. Multiple pleated units 10 can also be evenly distributed on the upper and lower arc modules 2 and the fan-shaped module 8, so that the pleated units 10 can be evenly distributed inside the entire liquid hydrogen storage film layer.
[0047] Furthermore, the size of the outer ring rectangular module 6 is 5n*5n, where n is the side length of the square pleat unit 10, the size of the middle ring rectangular module 5 is 3n*5n, the size of the inner ring rectangular module 4 is 1n*5n, the size of the side rectangular module 1 is 14n*7n, and the size of the center module 7 is 4n*4n.
[0048] In a specific embodiment, taking the hexadecagon of the present invention as an example, the size of the pleat unit 10 is 320×320, the size of the inner ring rectangular module 4 is 320×1600, the size of the middle ring rectangular module 5 is 960×1600, the size of the outer ring rectangular module 6 is 1600×1600, the size of the side rectangular module 1 is 4480×2240, and the size of the center module 7 is 1280×1280.
[0049] In one embodiment, the size of the pleated unit 10 can also be selected according to actual conditions, such as 300×300, or 280×280. The size of the pleated unit 10 can be selected according to the actual required size of the liquid hydrogen storage tank to achieve the same effect.
[0050] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.
Claims
1. A liquid hydrogen storage thin film layer structure, characterized in that: It includes the shell top, shell bottom and shell wall, among which: The shell wall includes a plurality of side walls, each of which includes two rectangular side modules connected up and down, and the plurality of side walls are alternately connected to form a polygon through arc-shaped side modules to form the shell wall; The shell top includes an inner ring, a middle ring and an outer ring, wherein the inner ring is composed of a plurality of inner ring rectangular modules arranged axially around the center, and adjacent inner ring rectangular modules are connected by fan-shaped modules, the middle ring is composed of a plurality of middle ring rectangular modules arranged axially around the center, and adjacent middle ring rectangular modules are connected by fan-shaped modules, the outer ring is composed of a plurality of outer ring rectangular modules arranged axially around the center, and adjacent outer ring rectangular modules are connected by fan-shaped modules, and the inner ring, the middle ring and the outer ring are connected in sequence from the center to the outside and form the shell top; The shell bottom includes an inner ring, a middle ring and an outer ring which are identical to the shell top and connected in sequence, and the shell bottom also includes a central module and a central connection module. The central module is connected to the inner side of the inner ring through the central connection module, and forms the shell bottom with the inner ring, the middle ring and the outer ring; The top and bottom of the shell wall are connected to the shell top and shell bottom respectively through upper and lower arc modules.
2. The liquid hydrogen storage thin film layer structure according to claim 1, characterized in that: Each of the fan-shaped modules is equal in size.
3. The liquid hydrogen storage thin film layer structure according to claim 1, characterized in that: A plurality of fold units are distributed on the side rectangular module, the inner ring rectangular module, the middle ring rectangular module, the outer ring rectangular module, the central module, the upper and lower arc modules and the fan-shaped module, and the fold units are square.
4. The liquid hydrogen storage thin film layer structure according to claim 3, characterized in that: The size of the outer ring rectangular module is 5n*5n, where n is the side length of the square fold unit.
5. The liquid hydrogen storage thin film layer structure according to claim 4, characterized in that: The size of the middle ring rectangular module is 3n*5n.
6. The liquid hydrogen storage thin film layer structure according to claim 5, characterized in that: The size of the inner ring rectangular module is 1n*5n.
7. The liquid hydrogen storage thin film layer structure according to claim 6, characterized in that: The size of the side rectangular module is 14n*7n.
8. The liquid hydrogen storage thin film layer structure according to claim 7, characterized in that: The size of the central module is 4n*4n.