Organic hydrogen storage liquid storage tank

Abstract

The invention discloses an organic hydrogen storage liquid storage tank which comprises a tank body shell, a vacuum layer is arranged in the tank body shell, an inner tank is arranged on the inner side of the vacuum layer, and the inner tank is composed of an outer layer and an inner layer wrapped by the outer layer. The supporting ring has the advantages that the supporting ring is located in the vacuum layer between the tank body shell and the inner tank, the structure of the supporting ring is improved, the supporting ring is divided into two layers, namely the upper layer connected with the tank body shell and the lower layer connected with the inner tank, the upper layer is of a honeycomb structure, and the supporting ring structure is provided with a plurality of hexagonal holes in an array from the surface; the supporting ring looks like a honeycomb structure, the self weight of the supporting ring structure is reduced, and meanwhile higher strength and rigidity are achieved. Due to the fact that the shape of the hexagonal honeycomb structure enables force distribution to be more uniform, the hydrogen liquid storage tank has better stress distribution capacity, the inner tank is effectively protected, and therefore on the premise that heat insulation and vacuum between the tank body outer shell and the inner tank are guaranteed, the hydrogen liquid storage tank has higher shock resistance.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen liquid storage tanks, and in particular to an organic hydrogen liquid storage tank. Background Art

[0002] Liquid hydrogen storage tanks are containers used to store liquid hydrogen and serve as a bridge from hydrogen production to utilization.

[0003] The first type is a normal pressure low-temperature storage tank, which is mostly in the shape of a vertical cylindrical dome tank. This type of storage tank also includes an inner tank and an outer tank, and can store a large volume of low-temperature medium.

[0004] The second type is a pressurized cryogenic storage tank (with an internal pressure of 0.1-0.6MPa), wherein the pressurized cryogenic storage tank includes an inner tank and an outer tank, which are generally vertical or horizontal, cylindrical or spherical in shape, and the interlayer between the inner tank and the outer tank is evacuated to achieve thermal insulation. This liquid hydrogen storage method has been relatively maturely applied in the aerospace and civil fields in Europe and the United States. However, this type of pressurized cryogenic storage tank is limited by the strength of the material and the vacuum degree between the interlayer is difficult and expensive to obtain and maintain. At the same time, since the interlayer between the inner tank and the outer tank is evacuated, the tank body strength is insufficient, so the impact resistance of this type of pressurized cryogenic storage tank is poor. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides an organic hydrogen liquid storage tank, which has the advantages of having stronger impact resistance while ensuring insulation and vacuum between the tank shell and the inner tank, thereby solving the problems existing in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: an organic hydrogen storage liquid storage tank, comprising a tank shell, a vacuum layer is arranged inside the tank shell, the inner side of the vacuum layer is an inner tank, and the inner tank is composed of an outer layer and an inner layer wrapped inside the outer layer;

[0009] A plurality of support rings are fixedly connected between the inner tank and the tank shell, and the support rings are located in the vacuum layer;

[0010] The support ring is divided into two layers, namely an upper layer connected to the outer shell of the tank body and a lower layer connected to the inner tank, wherein the upper layer is a honeycomb structure;

[0011] Both ends of the tank shell are wrapped with protective domes;

[0012] The end of the tank shell is fixedly connected with a joint, and the joint is connected to the inner tank;

[0013] The outer surface of the tank shell is fixedly connected with a plurality of positioning rings, the outer surface of the positioning ring is provided with a V-groove, and a plurality of gaskets are fixedly connected in the V-groove;

[0014] The outer surface of the gasket is fixedly connected with a positioning tool, and the surface of the positioning tool is a curved surface.

[0015] Adopting the above technical solution: This device is a small or medium-sized horizontal storage tank specially used for storing liquid hydrogen, and is a pressurized storage tank.

[0016] Preferably, the tank shell is made of stainless steel, and the tank shell is welded to the positioning ring.

[0017] Adopting the above technical solution: the storage tank is composed of aluminum inner liner, inner layer, outer layer, support ring, vacuum layer and tank shell from inside to outside. The vacuum layer is used to ensure strong thermal insulation between the tank shell and the inner tank. The outer layer and support ring of carbon fiber material are both made of insulating materials to ensure strong thermal insulation between the tank shell and the inner tank.

[0018] Preferably, the outer layer is a carbon fiber layer, and the outer layer is wound on the outer surface of the inner layer.

[0019] Preferably, the inner layer is an aluminum layer, the support ring is made of polystyrene, and the support ring is bonded to the outer layer.

[0020] Adopting the above technical solution: The core structure of this device is: the support ring is located in the vacuum layer between the outer shell of the tank body and the inner tank, and the support ring structure is improved. The support ring is divided into two layers, namely the upper layer connected to the outer shell of the tank body and the lower layer connected to the inner tank, wherein the upper layer is a honeycomb structure, that is, from the surface, the support ring structure has an array of multiple hexagonal holes, which looks similar to a honeycomb structure, reducing the deadweight of the support ring structure while having higher strength and rigidity. This is because the hexagonal honeycomb structure shape makes the force distribution more uniform, has better stress distribution ability, and effectively protects the inner tank. Therefore, under the premise of ensuring insulation and vacuum between the outer shell of the tank body and the inner tank, this hydrogen liquid storage tank has stronger impact resistance.

[0021] The above technical solution is adopted: the protective dome made of foam material is wrapped at both ends of the tank shell, and the foam material has certain elasticity and toughness, and its impact resistance is high, and it can withstand large impact loads. The foam material has good energy absorption capacity and can effectively absorb impact energy, thereby reducing the possibility of damage to the storage tank.

[0022] The above technical solution is adopted: a new positioning ring structure is designed, a V-groove is opened on the outer surface of the positioning ring, and a number of gaskets are fixedly connected in the V-groove. The gasket is also a new structure designed to fit the V-groove. The surface of the gasket is provided with a protrusion that fits the V-groove of the positioning ring. The back of the gasket is an arc-shaped surface and fits the surface of the positioning tool. The gasket serves as a structure between the positioning tool and the positioning ring. The contact area between the new gasket and the positioning ring is large, which can effectively protect the storage tank and prevent cracks and other defects on the positioning ring and the tank surface.

[0023] Preferably, the support ring is located on the inner side of the corresponding positioning ring.

[0024] Preferably, the thickness of the protective dome is 3-4 cm, the protective dome is bonded to both ends of the tank shell, and the material of the protective dome is foam.

[0025] Preferably, the material of the positioning ring is stainless steel, and at least three positioning rings are installed on the outer surface of the tank shell.

[0026] Preferably, the gasket is made of stainless steel, the gaskets are not connected to each other, the surface of the gasket is provided with a protrusion that matches the V-groove of the positioning ring, and the back of the gasket is an arc surface and fits the surface of the positioning tool.

[0027] Preferably, the gasket is welded to the positioning ring, and the back side of the gasket is welded to the positioning tool.

[0028] (III) Beneficial effects

[0029] Compared with the prior art, the present invention provides an organic hydrogen storage liquid storage tank, which has the following beneficial effects:

[0030] 1. The organic hydrogen liquid storage tank is provided with a support ring, a protective dome, a positioning ring, a V-groove, and a gasket. The support ring is located in the vacuum layer between the outer shell of the tank body and the inner tank. The support ring structure is improved. The support ring is divided into two layers, namely, an upper layer connected to the outer shell of the tank body and a lower layer connected to the inner tank. The upper layer is a honeycomb structure, that is, from the surface, the support ring structure has an array of multiple hexagonal holes, which looks similar to a honeycomb structure. While reducing the deadweight of the support ring structure, it has higher strength and rigidity. This is because the hexagonal honeycomb structure shape makes the force distribution more uniform, has better stress distribution ability, and effectively protects the inner tank. Therefore, under the premise of ensuring insulation and vacuum between the outer shell of the tank body and the inner tank, the hydrogen liquid storage tank has stronger impact resistance.

[0031] 2. The organic hydrogen storage liquid tank has a protective dome made of foam material wrapped at both ends of the tank shell. The foam material has certain elasticity and toughness, and its impact resistance is high, and it can withstand a large impact load. The foam material has good energy absorption capacity and can effectively absorb impact energy, thereby reducing the possibility of damage to the tank.

[0032] A new positioning ring structure is designed, with a V-groove on the outer surface of the positioning ring, and a number of gaskets are fixedly connected in the V-groove. The gasket is also a new structure designed to fit the V-groove. The surface of the gasket is provided with a protrusion that fits the V-groove of the positioning ring. The back of the gasket is an arc-shaped surface and fits the surface of the positioning tool. The gasket serves as a structure between the positioning tool and the positioning ring. The contact area between the new gasket and the positioning ring is large, which can effectively protect the storage tank and prevent defects such as cracks on the positioning ring and the tank surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the internal structure of an organic hydrogen storage liquid storage tank proposed by the present invention

[0034] Figure 2 This is a schematic structural diagram of an organic hydrogen storage liquid storage tank proposed by the present invention from a first perspective;

[0035] Figure 3 A schematic diagram of the structure of an organic hydrogen storage liquid storage tank proposed by the present invention from a second perspective

[0036] Figure 4 This is a schematic structural diagram of an organic hydrogen storage liquid storage tank proposed by the present invention when no gasket is installed;

[0037] Figure 5 It is a schematic diagram of the structure of the surface of the support ring in the present invention.

[0038] In the figure: 1-tank shell, 2-vacuum layer, 3-inner tank, 301-outer layer, 302-inner layer, 4-support ring, 5-protective dome, 6-joint, 7-positioning ring, 8-V groove, 9-gasket, 10-positioning tool. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-5, an organic hydrogen storage liquid storage tank, comprising a tank shell 1, a vacuum layer 2 is arranged inside the tank shell 1, an inner tank 3 is inside the vacuum layer 2, and the inner tank 3 is composed of an outer layer 301 and an inner layer 302 wrapped inside the outer layer 301;

[0041] A plurality of support rings 4 are fixedly connected between the inner tank 3 and the tank shell 1, and the support rings 4 are located in the vacuum layer 2;

[0042] The support ring 4 is divided into two layers, namely an upper layer connected to the outer shell 1 of the tank body and a lower layer connected to the inner tank 3, wherein the upper layer is a honeycomb structure;

[0043] Both ends of the tank shell 1 are wrapped with a protective dome 5;

[0044] The end of the tank shell 1 is fixedly connected with a joint 6, which is in communication with the inner tank 3;

[0045] A plurality of positioning rings 7 are fixedly connected to the outer surface of the tank shell 1, a V-groove 8 is formed on the outer surface of the positioning ring 7, and a plurality of gaskets 9 are fixedly connected in the V-groove 8;

[0046] The outer surface of the gasket 9 is fixedly connected with a positioning device 10, and the surface of the positioning device 10 is an arc surface.

[0047] Embodiment 1: This device is a small and medium-sized horizontal storage tank specially used for storing liquid hydrogen, and is a pressurized storage tank. The outer shell 1 of the tank body is made of stainless steel, and the outer shell 1 of the tank body is welded to the positioning ring 7. From the inside to the outside, this storage tank is an aluminum liner, i.e., an inner layer 302, an outer layer 301, a support ring 4, a vacuum layer 2, and a tank body outer shell 1. The vacuum layer 2 is used to ensure strong thermal insulation between the tank body outer shell 1 and the inner tank 3. The outer layer 301 and the support ring 4 made of carbon fiber material are both made of insulating materials to ensure strong thermal insulation between the tank body outer shell 1 and the inner tank 3. The outer layer 301 is a carbon fiber layer, and the outer layer 301 is wrapped around the outer surface of the inner layer 302. The inner layer 302 is an aluminum layer, and the material of the support ring 4 is polystyrene, and the support ring 4 and the outer layer 301 are bonded.

[0048] Embodiment 2: The support ring 4 is located in the vacuum layer 2 between the tank body outer shell 1 and the inner tank 3. The structure of the support ring 4 is improved. The support ring 4 is divided into two layers, namely an upper layer connected to the tank body outer shell 1 and a lower layer connected to the inner tank 3. The upper layer is a honeycomb structure, that is, from the surface, the support ring 4 structure has a plurality of hexagonal holes in an array, which looks similar to a honeycomb structure. While reducing the self-weight of the support ring 4 structure, it has higher strength and rigidity. This is because the hexagonal honeycomb structure shape makes the force distribution more uniform, has better stress distribution capabilities, and effectively protects the inner tank 3. Therefore, under the premise of ensuring insulation and vacuum between the tank body outer shell 1 and the inner tank 3, the hydrogen liquid storage tank has stronger impact resistance. The surface structure diagram of the support ring 4, that is, the honeycomb structure diagram is shown as follows Figure 5 shown.

[0049] When in use, S1, the storage tank is composed of an aluminum liner, i.e., an inner layer 302, an outer layer 301, a support ring 4, a vacuum layer 2, and a tank shell 1. The vacuum layer 2 is used to ensure strong thermal insulation between the tank shell 1 and the inner tank 3. The outer layer 301 and the support ring 4 made of carbon fiber are both made of insulating materials to ensure strong thermal insulation between the tank shell 1 and the inner tank 3.

[0050] S2. Wrap the two ends of the tank shell 1 with a protective dome 5 made of foam material, design a new positioning ring 7 structure, and open a V-groove 8 on the outer surface of the positioning ring 7. A number of gaskets 9 are fixedly connected in the V-groove 8. The back of the gasket 9 is an arc-shaped surface and fits the surface of the positioning tool 10. The gasket 9 serves as a structure between the positioning tool 10 and the positioning ring 7. The contact area between the new gasket 9 and the positioning ring 7 is large, which can effectively protect the storage tank.

[0051] In summary, the organic hydrogen liquid storage tank is arranged by the coordination of the support ring 4, the protective dome 5, the positioning ring 7, the V groove 8, and the gasket 9. The support ring 4 is located in the vacuum layer 2 between the tank shell 1 and the inner tank 3. The structure of the support ring 4 is improved. The support ring 4 is divided into two layers, namely the upper layer connected to the tank shell 1 and the lower layer connected to the inner tank 3. The upper layer is a honeycomb structure, that is, from the surface, the support ring 4 structure has a plurality of hexagonal holes in an array, which looks similar to a honeycomb structure. While reducing the deadweight of the support ring 4 structure, it has higher strength and rigidity. This is because the hexagonal honeycomb structure shape makes the force distribution more uniform, has better stress distribution ability, and effectively protects the inner tank 3. Therefore, under the premise of ensuring insulation and vacuum between the tank shell 1 and the inner tank 3, the hydrogen liquid storage tank has stronger impact resistance.

[0052] By wrapping the protective dome 5 of foam material at both ends of the tank shell 1, the foam material has certain elasticity and toughness, and its impact resistance is high, and it can withstand a large impact load. The foam material has good energy absorption capacity and can effectively absorb impact energy, thereby reducing the possibility of damage to the storage tank.

[0053] A new positioning ring 7 structure is designed, and a V-groove 8 is opened on the outer surface of the positioning ring 7. A number of gaskets 9 are fixedly connected in the V-groove 8. The gasket 9 is also a new structure designed to fit the V-groove 8. The surface of the gasket 9 is provided with a protrusion that fits the V-groove 8 of the positioning ring 7. The back of the gasket 9 is an arc-shaped surface and fits the surface of the positioning tool 10. The gasket 9 serves as a structure between the positioning tool 10 and the positioning ring 7. The contact area between the new gasket 9 and the positioning ring 7 is large, which can effectively protect the storage tank and prevent defects such as cracks on the positioning ring 7 and the surface of the tank.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An organic hydrogen storage liquid storage tank, characterized in that: The invention comprises a tank shell (1), wherein a vacuum layer (2) is arranged inside the tank shell (1), an inner tank (3) is located inside the vacuum layer (2), and the inner tank (3) is composed of an outer layer (301) and an inner layer (302) wrapped inside the outer layer (301); A plurality of support rings (4) are fixedly connected between the inner tank (3) and the tank outer shell (1), and the support rings (4) are located in the vacuum layer (2); The support ring (4) is divided into two layers, namely an upper layer connected to the outer shell of the tank (1) and a lower layer connected to the inner tank (3), wherein the upper layer is a honeycomb structure; Both ends of the tank shell (1) are wrapped with protective domes (5); A joint (6) is fixedly connected to the end of the tank shell (1), and the joint (6) is in communication with the inner tank (3); A plurality of positioning rings (7) are fixedly connected to the outer surface of the tank shell (1); a V-groove (8) is formed on the outer surface of the positioning ring (7); and a plurality of gaskets (9) are fixedly connected in the V-groove (8); A positioning tool (10) is fixedly connected to the outer surface of the gasket (9), and the surface of the positioning tool (10) is a curved surface.

2. An organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The tank shell (1) is made of stainless steel, and the tank shell (1) is welded to the positioning ring (7).

3. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The outer layer (301) is a carbon fiber layer, and the outer layer (301) is wound on the outer surface of the inner layer (302).

4. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The inner layer (302) is an aluminum layer, the support ring (4) is made of polystyrene, and the support ring (4) and the outer layer (301) are bonded together.

5. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The support ring (4) is located on the inner side of the corresponding positioning ring (7).

6. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The thickness of the protective dome (5) is 3-4 centimeters. The protective dome (5) is bonded to both ends of the tank shell (1). The material of the protective dome (5) is foam.

7. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The material of the positioning ring (7) is stainless steel, and at least three positioning rings (7) are installed on the outer surface of the tank shell (1).

8. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The gasket (9) is made of stainless steel. The gaskets (9) are not connected to each other. The surface of the gasket (9) is provided with a protrusion that matches the V-groove (8) of the positioning ring (7). The back of the gasket (9) is an arc-shaped surface that fits the surface of the positioning tool (10).

9. The organic hydrogen storage liquid storage tank according to claim 1, characterized in that: The gasket (9) is welded to the positioning ring (7), and the back side of the gasket (9) is welded to the positioning tool (10).

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