A hydrogen station hydrogen storage pressure self-adaptive adjusting device

Abstract

The utility model relates to hydrogen storage device technical field discloses a kind of hydrogen station hydrogen storage pressure self-adapting regulating device, the utility model solves the problem of some hydrogen storage devices in existing when wind volume instantaneously increases or reduces, pressure change influences service life, large area storage hydrogen storage device is easy to knock.Provide a kind of hydrogen station hydrogen storage pressure self-adapting regulating device, including protective shell, the inside of protective shell is connected with inner bag layer, the lower portion of inner bag layer is connected with gas outlet, the lower portion of gas outlet is connected with regulating valve, the lower portion of regulating valve is connected with pressure relief tank, the outside of pressure relief tank is connected with bottom plate, the upper portion of bottom plate is connected with protection plate, the upper portion of bottom plate is provided with support mechanism, the inside of protective shell is also connected with mounting plate, the upper portion of mounting plate is connected with differential pressure sensor, pressure can be self-adaptingly regulated, prolong the service life of hydrogen storage equipment, protective shell is supported by support mechanism, guarantee its stable when using.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen storage device technology, specifically a hydrogen station hydrogen storage pressure adaptive adjustment device. Background Technology

[0002] As the global energy structure shifts towards green and low-carbon development, the utilization of renewable energy sources such as wind and solar power is continuously expanding. These green energy sources can provide direct current for the water electrolysis process through rectification, converting water into hydrogen and oxygen. Against the backdrop of the rapid development of the hydrogen energy industry, hydrogen stations, as key infrastructure for hydrogen energy applications, face the core issue of ensuring the safety, efficiency, and adaptability of hydrogen storage pressure control, which has become one of the key constraints on the large-scale promotion of hydrogen energy.

[0003] For example, the large-scale high-pressure hydrogen storage and supply device disclosed in publication number "CN220669148U" can effectively meet the stable hydrogen supply needs of downstream hydrogen-consuming units in the context of the current large-scale application of green electricity electrolysis for hydrogen production from wind power, photovoltaic power, etc., through reasonable design of the hydrogen supply and storage structure, and has obvious environmental and economic benefits. However, the device still has the following problems:

[0004] Most existing hydrogen storage devices are single-layer devices, with a small number having a double layer of protective outer shell and inner liner to prevent pressure damage. However, when the air volume increases or decreases suddenly, the internal pressure of the hydrogen storage device changes significantly, which can still lead to damage. Furthermore, it is difficult to place large hydrogen storage devices properly, as they may be subject to bumps and knocks. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogen storage pressure adaptive adjustment device for hydrogen stations. By using this device, the problems of pressure changes affecting the service life of some existing hydrogen storage devices when the air volume increases or decreases instantaneously, and the easy impact on large-area hydrogen storage devices, can be solved.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen storage pressure adaptive adjustment device for a hydrogen station, comprising a protective shell, an inner liner connected inside the protective shell, a gas outlet connected below the inner liner, a regulating valve connected below the gas outlet, a pressure relief tank connected below the regulating valve, a base plate connected outside the pressure relief tank, a protective plate connected above the base plate, a support mechanism provided above the base plate, an installation plate connected inside the protective shell, and a differential pressure sensor connected above the installation plate.

[0007] Preferably, the support mechanism includes a central support, a magnetorheological tube, a mounting plate, a top support, and a shock-absorbing damper. The central support is located above the base plate and is fixed by the base plate to facilitate subsequent protection, shock absorption, and buffering work.

[0008] Preferably, magnetic flux tubes are evenly and equidistantly distributed above the central support. The magnetic flux tubes are filled with magnetic flux fluid, and a power cord is provided below the magnetic flux fluid. The power cord switch is connected to a PLC controller. The magnetic flux tubes are evenly and equidistantly distributed below the mounting plate. The PLC controller is connected to the magnetic flux tubes to ensure the change of magnetic force of the magnetic flux tubes and to perform preliminary shock absorption and buffering work.

[0009] Preferably, the mounting plate and the protective shell are installed as a single unit. There are two mounting plates in total, and multiple shock-absorbing dampers are provided below the upper mounting plate. The shock-absorbing dampers are installed as a single unit with the top bracket. The shock-absorbing dampers are used for secondary shock absorption and buffering to achieve a double protection structure and prevent the protective shell from being bumped or knocked.

[0010] Preferably, the protective plates are symmetrically distributed above the base plate, the center of the base plate coincides with the center of the pressure relief tank, and a sealing rubber ring is provided at the connection between the pressure relief tank and the regulating valve. The regulating valve allows the pressure to be released towards the inner wall of the pressure relief tank, avoiding a sudden increase in pressure that could damage the inner liner.

[0011] Preferably, a rubber sealing ring is also provided at the connection between the regulating valve and the air outlet. The air outlet and the protective shell are integrally cast. An air inlet of the same shape is provided on the top of the protective shell. The opening and closing of the regulating valve is controlled by a PLC controller. The regulating valve opens and closes automatically through the PLC controller, without the need for manual operation by the operator, and the response is timely.

[0012] Preferably, the inner liner is a proportionally scaled-down version of the outer shell. Cylindrical air tubes are provided on the upper and lower sides of the inner liner, and the air tubes correspond to the air inlet and air outlet of the outer shell, respectively. The connection is provided with a multi-layer sealing structure. Hydrogen is stored in the inner liner, and the outer shell protects the inner liner in case of accidental breakage, preventing accidental injury to the surrounding area.

[0013] Preferably, the mounting plate is located on the inner side of the bottom inner wall of the protective shell. The mounting plate and the differential pressure sensor are installed in an integrated manner. The differential pressure sensor is connected to the PLC controller. The differential pressure sensor can monitor the pressure change between the inner liner and the protective shell in a timely manner, so as to open the regulating valve to release pressure when the pressure increases or decreases instantaneously.

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

[0015] 1. Adaptive pressure adjustment to extend the service life of hydrogen storage equipment: A differential pressure sensor is installed between the protective shell and the inner liner. When the wind force increases, causing the pressure between the protective shell and the inner liner to increase, the differential pressure sensor detects the pressure change and then the regulating valve opens, allowing the hydrogen inside the inner liner to flow towards the inside of the pressure relief tank, thereby ensuring pressure balance and extending the service life of the inner liner.

[0016] 2. The protective shell is protected and supported by a bracket mechanism to ensure its stability during use: The central bracket and the top bracket work together to achieve dual shock absorption and buffering through magnetic flux damping and damping, ensuring the stability of the protective shell during use. Multiple protective shells will not rotate during use, and any impact will be caused by the base plate and the protective plate bracket, ensuring the stability of the protective shell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall front view of the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the inner liner of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the support mechanism of this utility model.

[0021] In the diagram: 1. Protective outer shell; 2. Support mechanism; 201. Central support; 202. Magnetorheological tube; 203. Mounting plate; 204. Top support; 205. Vibration damping; 3. Protective plate; 4. Base plate; 5. Pressure relief tank; 6. Regulating valve; 7. Air outlet; 8. Inner liner; 9. Mounting plate; 10. Differential pressure sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0024] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4A hydrogen storage pressure adaptive regulation device for a hydrogen station includes a protective outer shell 1 that protects an inner liner 8 from damage. The inner liner 8 is connected inside the protective outer shell 1, facilitating hydrogen storage. An outlet 7 is connected below the inner liner 8, and a regulating valve 6 is connected below the outlet 7. By cooperating with the outlet 7 and the regulating valve 6, when the airflow increases and hydrogen production accelerates, hydrogen gas inside the inner liner 8 flows towards a pressure relief tank 5. The pressure relief tank 5 is connected below the regulating valve 6, enabling adaptive regulation. Pressure relief extends the service life of the inner liner 8. The pressure relief tank 5 is connected to a base plate 4 on the outside, which supports the pressure relief tank 5 and prevents it from being placed directly on the ground. A protective plate 3 is connected above the base plate 4 to protect the sides and prevent bumps. A support mechanism 2 is set above the base plate 4 to provide double shock absorption for the protective shell 1 and prevent bumps. An installation plate 9 is also connected inside the protective shell 1. A differential pressure sensor 10 is connected above the installation plate 9 to monitor the pressure in real time and facilitate pressure relief.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example 1:

[0027] Please see Figure 1 , Figure 2 and Figure 4 The support mechanism 2 includes a central support 201, magnetorheological tubes 202, a mounting plate 203, a top support 204, and a shock-absorbing damper 205. The central support 201 is located above the base plate 4 and is fixed by the base plate 4 to facilitate subsequent protection, shock absorption, and buffering operations. Magnetorheological tubes 202 are evenly and equidistantly distributed above the central support 201. The interior of the magnetorheological tubes 202 is filled with magnetorheological fluid, and a power cord is installed below the magnetorheological fluid. The power cord switch is connected to the PLC controller. The magnetic flux tubes 202 are evenly and equidistantly distributed below the mounting plate 203. A PLC controller is used to connect to the magnetic flux tubes 202 to ensure the change of magnetic force of the magnetic flux tubes 202 and to perform preliminary shock absorption and buffering. The mounting plate 203 is integrated with the protective shell 1. There are two mounting plates 203 in total, and multiple shock-absorbing dampers 205 are set below the upper mounting plate 203. The shock-absorbing dampers 205 are integrated with the top bracket 204. The shock-absorbing dampers 205 are used for secondary shock absorption and buffering to achieve a double protection structure and prevent the protective shell 1 from being bumped.

[0028] Please see Figure 1 , Figure 2 and Figure 3The protective plates 3 are symmetrically distributed above the base plate 4. The center of the base plate 4 coincides with the center of the pressure relief tank 5. A sealing rubber ring is provided at the connection between the pressure relief tank 5 and the regulating valve 6. The pressure is released towards the inner wall of the pressure relief tank 5 through the regulating valve 6 to avoid the pressure from increasing instantly and damaging the inner liner layer 8. A rubber sealing ring is also provided at the connection between the regulating valve 6 and the air outlet 7. The air outlet 7 and the protective shell 1 are integrally cast. An air inlet of the same shape is provided on the top of the protective shell 1. The opening and closing of the regulating valve 6 is controlled by a PLC controller. The PLC controller controls the regulating valve 6 to open and close automatically without manual operation by the staff, and the response is timely.

[0029] Please see Figure 1 , Figure 2 and Figure 3 The inner liner 8 is a proportionally scaled-down version of the outer shell 1. Cylindrical air pipes are provided on the upper and lower sides of the inner liner 8, and the air pipes correspond to the air inlet and air outlet 7 of the outer shell 1, respectively. The connection is provided with a multi-layer sealing structure. Hydrogen is stored through the inner liner 8. In case of accidental rupture, the outer shell 1 will protect it and prevent accidental injury to the surrounding area.

[0030] Please see Figure 1 , Figure 2 and Figure 3 The mounting plate 9 is located on the inner side of the bottom inner wall of the protective shell 1. The mounting plate 9 and the differential pressure sensor 10 are installed as an integral unit. The differential pressure sensor 10 is connected to the PLC controller. The differential pressure sensor 10 can monitor the pressure change between the inner liner layer 8 and the protective shell 1 in a timely manner, so that the regulating valve 6 can be opened in time to release pressure when the pressure increases or decreases instantaneously.

[0031] Working principle: First, during use, hydrogen is produced by wind power and then enters the inner liner 8 through pipelines for hydrogen storage. The outer shell 1 forms a buffer chamber between the inner liner 8 and the outer shell. When the amount of hydrogen produced by wind power increases or the amount of hydrogen added increases instantaneously, the pressure inside the inner liner 8 increases. The differential pressure sensor 10 detects the pressure change and quickly feeds the signal back to the PLC controller, causing the PLC controller to respond quickly and operate the regulating valve 6 to open. This allows the overpressured hydrogen inside the inner liner 8 to rush into the pressure relief tank 5, preventing the pressure from exceeding the limit. Furthermore, by setting a threshold, the regulating valve 6 can open to different lengths depending on the threshold, ensuring stable pressure relief and preventing the inner liner 8 from being damaged by a sudden decrease in pressure. When the pressure change decreases, the PLC controller closes the regulating valve 6 and stops the pressure relief operation.

[0032] As mentioned above, during normal use, the shock absorber 205 performs initial shock absorption and buffering work, and the central support 201 and the top support 204 are prevented from being bumped during use or transportation. When the pressure increases, the PLC controller powers on the magnetorheological tube 202, which increases the viscosity of the magnetorheological fluid inside it and switches to a strong shock absorption mode to avoid the shock absorption effect deteriorating due to instantaneous pressure increase. After the overpressure hydrogen is depressurized, the power switch below the magnetorheological tube 202 closes to prevent energy waste.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen storage pressure adaptive regulation device for a hydrogen station, comprising a protective outer shell, characterized in that: The protective shell has an inner liner connected inside, an air outlet is connected below the inner liner, a regulating valve is connected below the air outlet, a pressure relief tank is connected below the regulating valve, a base plate is connected to the outside of the pressure relief tank, a protective plate is connected above the base plate, a support mechanism is provided above the base plate, and a mounting plate is also connected inside the protective shell, with a differential pressure sensor connected above the mounting plate.

2. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 1, characterized in that: The support mechanism includes a central support, a magnetorheological tube, a mounting plate, a top support, and a shock-absorbing damper, with the central support located above the base plate.

3. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 2, characterized in that: The central support has magnetic flux tubes evenly and equidistantly distributed above it. The magnetic flux tubes are filled with magnetic flux fluid, and a power cord is provided below the magnetic flux fluid. The power cord switch is connected to the PLC controller. The magnetic flux tubes are evenly and equidistantly distributed below the mounting plate.

4. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 3, characterized in that: The mounting plate and the protective shell are installed as a single unit. There are two mounting plates in total, and multiple shock-absorbing dampers are provided below the upper mounting plate. The shock-absorbing dampers are installed as a single unit with the top bracket.

5. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 1, characterized in that: The protective plates are symmetrically distributed above the base plate, and the center of the base plate coincides with the center of the pressure relief tank. A sealing rubber ring is provided at the connection between the pressure relief tank and the regulating valve.

6. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 5, characterized in that: A rubber sealing ring is also provided at the connection between the regulating valve and the air outlet. The air outlet and the protective shell are integrally cast. An air inlet of the same shape is provided on the top of the protective shell. The opening and closing of the regulating valve is controlled by a PLC controller.

7. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 1, characterized in that: The inner liner is a proportionally scaled-down version of the outer shell. Cylindrical air tubes are provided on the upper and lower sides of the inner liner, and the air tubes correspond to the air inlet and air outlet of the outer shell, respectively. The connection is provided with a multi-layer sealing structure.

8. The adaptive regulation device for hydrogen storage pressure at a hydrogen station according to claim 7, characterized in that: The mounting plate is located on the inner side of the bottom inner wall of the protective housing. The mounting plate and the differential pressure sensor are installed as an integral unit. The differential pressure sensor is connected to the PLC controller.

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