High-pressure hydrogen buffer tank structure

Abstract

The utility model relates to the technical field of tank bodies, in particular to a high-pressure hydrogen buffer tank body structure which comprises a stainless steel shell, a vacuum storage assembly is installed on the inner side of the stainless steel shell, a partition assembly is fixedly connected to one side of the vacuum storage assembly, and the stainless steel shell comprises a shell body. The inner side of the shell body is fixedly connected with a connecting frame and an electric telescopic rod, the vacuum storage assembly comprises a solid disc, the rear end of the solid disc is fixedly connected with a sealing air bag, the front end of the connecting frame is fixedly connected with a hole center disc, and the inner side of the hole center disc is fixedly connected with a pipe connecting barrel; according to the hydrogen storage device, the problem of hydrogen permeation caused by expansion of the rubber air bag is effectively solved, the hydrogen storage effect and safety are remarkably improved, meanwhile, the stability of equipment is improved, the service life of the equipment is prolonged, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tank body technical field, concretely is a kind of high-pressure hydrogen buffer tank body structure. BACKGROUND

[0002] High-pressure hydrogen buffer tank body is an important pressure vessel for adjusting pressure fluctuation in hydrogen system, stabilizing gas supply, its main function is to relieve system pressure fluctuation by absorbing and releasing hydrogen, ensure the safety and stability of hydrogen in storage, transportation and use process;

[0003] When high-pressure hydrogen enters the buffer tank, the airflow speed is high, which can cause strong impact and friction on the inner wall of the tank body, and the friction between the body and the inner wall of the tank body can generate heat, especially in high-pressure environment, the heat accumulation can cause the temperature of the tank body to rise, and even cause safety problems, the buffer structure can reduce the heat generated by friction, thereby reducing the internal temperature of the tank body and improving the safety of the system;

[0004] In the prior art, in order to relieve the impact between the gas and the inner wall of the high-pressure tank when storing hydrogen, a rubber air bag is usually used for buffering, this design can achieve certain buffering effect, but there are some problems in actual application, when the high-pressure tank is used for storing hydrogen, internal vacuuming is a common pretreatment method, its main purpose is to improve the purity of hydrogen and enhance the safety of storage, however, when using a rubber air bag to store hydrogen, the air bag will expand with the increase of hydrogen storage capacity, since hydrogen molecules are extremely small, the micro-pores on the surface of the air bag may increase during the expansion process, thereby causing the hydrogen permeation speed to increase, and thus reducing the storage effect of hydrogen, therefore, a high-pressure hydrogen buffer tank body structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high-pressure hydrogen buffer tank body structure, to solve the problem that when using rubber air bag to store hydrogen, air bag will expand with the increase of hydrogen storage capacity, since hydrogen molecules are extremely small, the micro-pores on the surface of the air bag may increase during the expansion process, thereby causing the hydrogen permeation speed to increase, and thus reducing the storage effect of hydrogen.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A high-pressure hydrogen buffer tank structure includes a stainless steel outer shell, a vacuum storage assembly installed inside the stainless steel outer shell, a partition assembly fixedly connected to one side of the vacuum storage assembly, the stainless steel outer shell including an outer shell body, a guide rail groove formed inside the outer shell body, a connecting frame and an electric telescopic rod fixedly connected inside the outer shell body, the vacuum storage assembly including a solid disk, a sealing airbag fixedly connected to the rear end of the solid disk, a perforated disk fixedly connected to the front end of the connecting frame, a connecting tube fixedly connected to the inner side of the perforated disk, the partition assembly including a partition plate, a venting channel formed inside the partition plate, the outer side of the partition plate fixedly connected to the inner side of the sealing airbag, and the front end of the electric telescopic rod fixedly connected to the inner side of the outer shell body.

[0008] As a further optimization of this utility model, the partition plate has vibration damping holes on its inner side, vibration damping columns are slidably connected to the inner side of the vibration damping holes, sealing rings are fixedly connected to the outer side of the vibration damping columns, and a spring is fixedly connected to one side of the vibration damping columns. The ventilation channel passes through the inner side of the partition plate from front to back, and there are multiple partition plates.

[0009] As a further optimization of this utility model, the vibration damping column is shaped as two cylinders with different diameters, the outer side of the sealing ring is fitted with the inner side of the vibration damping hole, and the vibration damping column extends out of the outer side of the partition plate.

[0010] As a further optimization of this utility model, the following features are provided: a fixed wheel block is fixedly connected to the end of the damping column away from the spring; a wheel column is fixedly connected to the inner side of the fixed wheel block; and a roller is rotatably connected to the outer side of the wheel column.

[0011] As a further optimization of this utility model, the fixed wheel block is embedded in the inner side of the guide rail groove, the outer side of the roller is in contact with one side of the guide rail groove, a gap is provided between the fixed wheel block and the partition plate, and a groove is provided at the end of the fixed wheel block near the roller.

[0012] As a further optimization of this utility model, the inner side of the outer shell is hollow, and the vacuum storage component and the partition component are both embedded and installed inside the outer shell.

[0013] As a further optimization of this utility model, the rear end of the electric telescopic rod is fixedly connected to the front end of the solid disc, the diameter of the solid disc is the same as the diameter of the partition plate, the solid disc is disposed at the front end of the multiple partition components, and the perforated disc is disposed at the rear end of the multiple partition components.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The utility model discloses a vacuum storage device for hydrogen gas, which comprises a stainless steel shell, a vacuum storage assembly and a partition assembly.

[0016] During operation, the device can flexibly adjust the internal storage space according to the inflation amount of hydrogen gas, thereby avoiding the increase of micro-pores when the storage space changes, and significantly improving the storage effect and safety of hydrogen gas. Meanwhile, the efficient sealing of the hydrogen storage space is realized through the synergistic effect of the sealing air bag made of rubber material and the multiple sealing components, which further enhances the sealing performance of the device and ensures the stability of hydrogen gas during storage and transportation. In addition, during the inflation and deflation of hydrogen gas, the damping effect of the damping column in the damping hole and the supporting effect of the spring on the fixed wheel block provide stable support and damping effect for the movement of the partition plate, which further improves the stability and safety of the equipment, improves the efficiency and safety of hydrogen gas storage, prolongs the service life of the device and reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a cut open structure schematic view of the shell body of the utility model;

[0019] Figure 3 It is an electric telescopic rod structure schematic view of the utility model;

[0020] Figure 4 It is a cut open structure schematic view of the sealing air bag of the utility model;

[0021] Figure 5 It is a hole core disc structure schematic view of the utility model;

[0022] Figure 6 It is a cut open structure schematic view of the partition plate of the utility model;

[0023] Figure 7 It is an A place structure schematic view of the utility model Figure 6 ;

[0024] Figure 8 It is a fixed wheel block structure schematic view of the utility model.

[0025] In the drawing: 1, stainless steel shell; 11, shell body; 12, guide rail groove; 13, connecting frame; 14, electric telescopic rod;

[0026] 2, vacuum storage assembly; 21, solid disc; 22, sealing air bag; 23, hole core disc; 24, connecting pipe cylinder;

[0027] 3, partition assembly; 31, partition plate; 32, air passage; 33, damping hole; 34, spring; 35, damping column; 36, sealing ring; 37, solid wheel block; 38, wheel column; 39, roller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0030] Please refer to Figures 1-8 The present application provides a technical solution:

[0031] A high-pressure hydrogen buffer tank structure, comprising a stainless steel shell 1, a vacuum storage assembly 2 is installed on the inner side of the stainless steel shell 1, a partition assembly 3 is fixedly connected to one side of the vacuum storage assembly 2, the stainless steel shell 1 comprises a shell body 11, a guide rail groove 12 is formed on the inner side of the shell body 11, a connecting frame 13 and an electric telescopic rod 14 are fixedly connected to the inner side of the shell body 11, the vacuum storage assembly 2 comprises a solid disc 21, a sealed air bag 22 is fixedly connected to the rear end of the solid disc 21, a hole core disc 23 is fixedly connected to the front end of the connecting frame 13, a connecting pipe cylinder 24 is fixedly connected to the inner side of the hole core disc 23, the partition assembly 3 comprises a partition plate 31, an air passage 32 is formed on the inner side of the partition plate 31, the partition plate 31 is fixedly connected to the inner side of the sealed air bag 22, and the electric telescopic rod 14 is fixedly connected to the inner side of the shell body 11.

[0032] As a further implementation of the present scheme, the inside of the partition plate 31 is provided with a damping hole 33, the inside of the damping hole 33 is slidably connected with a damping column 35, the outside of the damping column 35 is fixedly connected with a sealing ring 36, one side of the damping column 35 is fixedly connected with a spring 34, the air passage 32 penetrates the inside of the partition plate 31, the number of the partition plate 31 is multiple, the shape of the damping column 35 is two-section cylinder with different diameters, the outside of the sealing ring 36 is in contact with the inside of the damping hole 33, the damping column 35 extends out of the outside of the partition plate 31, through the above setting, the damping hole 33 is arranged in the inside of the partition plate 31 and slidably connected with the damping column 35, and the sealing effect of the sealing ring 36 can provide stable support and damping effect for the partition plate 31 during hydrogen charging and discharging, effectively reducing vibration and wear caused by airflow impact, and improving the stability and service life of the device;

[0033] As a further implementation of the present scheme, the end of the damping column 35 away from the spring 34 is fixedly connected with a fixed wheel block 37, the inside of the fixed wheel block 37 is fixedly connected with a wheel column 38, the outside of the wheel column 38 is rotatably connected with a roller 39, the fixed wheel block 37 is embedded and installed in the inside of the guide rail groove 12, the outside of the roller 39 is in contact with one side of the guide rail groove 12, and a gap is arranged between the fixed wheel block 37 and the partition plate 31. One end of the fixed wheel block 37 close to the roller 39 is provided with a groove, through the above setting, the position of the fixed wheel block 37 can be flexibly adjusted during movement, the friction and wear are reduced, the movement range of the fixed wheel block 37 is effectively limited, the deviation or jamming of the fixed wheel block 37 during operation is prevented, the stability and reliability of the device are further improved, and the efficiency and safety of the equipment during long-term operation are ensured;

[0034] As a further implementation of the present scheme, the inside of the shell body 11 is hollow, the vacuum storage assembly 2 and the partition assembly 3 are embedded and installed in the inside of the shell body 11, the rear end of the electric telescopic rod 14 is fixedly connected with the front end of the solid disc 21, the diameter of the solid disc 21 is the same as that of the partition plate 31, the solid disc 21 is arranged at the front end of the multiple partition assemblies 3, and the hole core disc 23 is arranged at the rear end of the multiple partition assemblies 3, through the above setting, the coordinated movement between the components of the device during operation is more smooth, and through the position setting of the solid disc 21 and the hole core disc 23, the hydrogen storage space can be flexibly adjusted, the adaptability and storage efficiency of the device are improved.

[0035] Work flow: when hydrogen is stored, the solid disc 21 and the partition plate 31 are tightly attached between the gas bags 22, and the partition plate 31 and the hole center disc 23 are tightly attached between the partition plates 31, at this time, the sealed space formed between the solid disc 21 and the partition plate 31 is vacuumized, the connecting tube 24 is connected with the external pipeline, the external pipeline transports hydrogen between the solid disc 21 and the hole center disc 23 through the connecting tube 24, in the process of gradually transporting hydrogen, the electric telescopic rod 14 is started according to the amount of hydrogen transported, the electric telescopic rod 14 drives the solid disc 21 to move forward, at this time, the distance between the solid disc 21 and the hole center disc 23 is away, the plurality of partition plates 31 gradually move forward, the sealing gas bag 22 gradually expands, the sealing gas bag 22 is made of rubber, the number of the sealing gas bag 22 is multiple, through the design of the sealing gas bag 22, the space between the solid disc 21 and the hole center disc 23 is sealed, at the same time, the distance between the solid disc 21 and the plurality of partition plates 31 can be adjusted, so that the space between the solid disc 21 and the partition plate 31 can be changed, when the partition plate 31 moves, the fixed wheel block 37 moves, the fixed wheel block 37 leaves a certain distance with the guide rail groove 12, which leaves a buffer space for the up-down and left-right movement of the partition plate 31, the fixed wheel block 37 slides in the inside of the solid disc 21, which can improve the stability of the partition plate 31 when moving, at the same time, when hydrogen is filled and discharged, the damping column 35 moves in the inside of the damping hole 33, through the sealing of the sealing ring 36, when the damping column 35 moves in the inside of the damping hole 33, it will be affected by a certain damping effect, which plays a role in damping the partition plate 31, the spring 34 plays a role in supporting the fixed wheel block 37, which improves the stability and safety of the equipment in use, through the above principle, when the device is recharged, the internal storage space can be adjusted, at the same time, the change of the storage space can be prevented to increase the micro-pore, which avoids the removal of hydrogen from the storage part, improves the safety and effectiveness of storage.

[0036] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-pressure hydrogen buffer tank structure, comprising a stainless steel outer shell (1), characterized in that: A vacuum storage assembly (2) is installed inside the stainless steel shell (1), and a partition assembly (3) is fixedly connected to one side of the vacuum storage assembly (2). The stainless steel shell (1) includes a shell body (11), a guide rail groove (12) is provided on the inner side of the shell body (11), and a connecting frame (13) and an electric telescopic rod (14) are fixedly connected to the inner side of the shell body (11). The vacuum storage assembly (2) includes a solid disk (21), a sealing airbag (22) is fixedly connected to the rear end of the solid disk (21), a perforated disk (23) is fixedly connected to the front end of the connecting frame (13), and a connecting tube (24) is fixedly connected to the inner side of the perforated disk (23). The partition assembly (3) includes a partition plate (31), and a ventilation channel (32) is provided on the inner side of the partition plate (31). The outer side of the partition plate (31) is fixedly connected to the inner side of the sealing airbag (22), and the front end of the electric telescopic rod (14) is fixedly connected to the inner side of the outer shell body (11).

2. The high-pressure hydrogen buffer tank structure according to claim 1, characterized in that: The partition plate (31) has a vibration damping hole (33) on its inner side. A vibration damping column (35) is slidably connected to the inner side of the vibration damping hole (33). A sealing ring (36) is fixedly connected to the outer side of the vibration damping column (35). A spring (34) is fixedly connected to one side of the vibration damping column (35). The ventilation channel (32) passes through the inner side of the partition plate (31) from front to back. There are multiple partition plates (31).

3. The high-pressure hydrogen buffer tank structure according to claim 2, characterized in that: The vibration damping column (35) is shaped as two cylinders with different diameters. The outer side of the sealing ring (36) fits against the inner side of the vibration damping hole (33). The vibration damping column (35) extends out of the outer side of the partition plate (31).

4. The high-pressure hydrogen buffer tank structure according to claim 2, characterized in that: The end of the damping column (35) away from the spring (34) is fixedly connected to a fixed wheel block (37), the inner side of the fixed wheel block (37) is fixedly connected to a wheel column (38), and the outer side of the wheel column (38) is rotatably connected to a roller (39).

5. The high-pressure hydrogen buffer tank structure according to claim 4, characterized in that: The fixed wheel block (37) is embedded in the inner side of the guide rail groove (12), the outer side of the roller (39) is in contact with one side of the guide rail groove (12), a gap is provided between the fixed wheel block (37) and the partition plate (31), and a groove is provided at one end of the fixed wheel block (37) near the roller (39).

6. The high-pressure hydrogen buffer tank structure according to claim 1, characterized in that: The inner side of the outer shell body (11) is hollow, and the vacuum storage component (2) and the partition component (3) are both embedded in the inner side of the outer shell body (11).

7. The high-pressure hydrogen buffer tank structure according to claim 1, characterized in that: The rear end of the electric telescopic rod (14) is fixedly connected to the front end of the solid disc (21). The diameter of the solid disc (21) is the same as the diameter of the partition plate (31). The solid disc (21) is located at the front end of the multiple partition components (3), and the perforated disc (23) is located at the rear end of the multiple partition components (3).

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