Magnesium-based solid hydrogen storage tank and system

Abstract

The invention discloses a magnesium-based solid hydrogen storage tank and system.The tank comprises a tank body and a heating and heat transfer assembly located in the tank body, the tank body is provided with a hydrogen inlet, a hydrogen outlet and a material filling opening, and the heating and heat transfer assembly comprises a plurality of heating sleeves, a plurality of heating rods, a plurality of heat transfer foam metal plates and a plurality of heat transfer fins; the multiple heating sleeves are vertically fixed in the tank body, and every two adjacent heating sleeves are connected through a heat transfer foam metal plate; the plurality of heating rods are respectively inserted into the plurality of heating sleeves; and the plurality of heat transfer fins are respectively fixed on the outer sides of the plurality of heating sleeves. The hydrogen storage efficiency, safety and reliability can be improved, the requirements for high capacity and monitoring of the hydrogen absorption and desorption rate are met, and the large-scale preparation cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of magnesium-based solid-state hydrogen storage, and more specifically to a magnesium-based solid-state hydrogen storage tank and system. Background Art

[0002] As a clean and efficient secondary energy source, hydrogen energy has become the mainstream direction of new energy development due to its advantages such as clean and low-carbon, highly efficient and renewable, and zero emissions. However, there are bottlenecks in the preparation, storage, transportation, and application of hydrogen energy, and the utilization rate urgently needs to be improved.

[0003] Currently, the main hydrogen storage methods are high-pressure gaseous hydrogen storage, liquid hydrogen storage, and solid-state hydrogen storage. Among them, high-pressure gaseous hydrogen storage technology is mature, but the hydrogen storage density is low and the safety hazards are large. With the increase in the requirement for hydrogen storage density, the risk is further exacerbated as the pressure increases; although liquid hydrogen storage has a high density, it has problems such as high liquefaction energy consumption and high vaporization safety risks; magnesium-based solid-state hydrogen storage has become a hot topic in hydrogen energy research due to its high density, safety, and efficiency.

[0004] However, there are still many problems with magnesium-based solid-state hydrogen storage: 1) During the hydrogen absorption and desorption process of magnesium-based hydrogen storage materials, heat changes and volume expansion and contraction occur, and the resulting stress impacts the internal structure of the tank. The internal structure is easily squeezed and deformed, affecting the hydrogen flow, heat transfer efficiency, and shortening the service life of the hydrogen storage tank; 2) The working temperature of magnesium-based hydrogen storage materials exceeds 300 °C, and the heat management during the hydrogen charging and discharging process is complex. Moreover, the magnesium-based hydride has poor thermal conductivity, and the heat cannot be completely transferred to the hydrogen storage material, restricting its application; 3) During the hydrogen absorption and desorption process of traditional solid-state hydrogen storage tanks, there are problems such as being unable to monitor the relationship between the hydrogen absorption and desorption temperature and rate of the material and being difficult to judge the end point of hydrogen absorption and desorption.

[0005] Therefore, providing an efficient and reliable magnesium-based solid-state hydrogen storage tank and system is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a magnesium-based solid-state hydrogen storage tank and system to improve the hydrogen storage efficiency, safety, and reliability, meet the requirements of high capacity and monitoring of the hydrogen absorption and desorption rate, and reduce the large-scale preparation cost.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A magnesium-based solid-state hydrogen storage tank body, comprising a tank body and a heating and heat transfer assembly located inside the tank body. The tank body has a hydrogen inlet and outlet and a material filling port. The heating and heat transfer assembly includes a plurality of heating sleeves, a plurality of heating rods, a plurality of heat transfer foam metal plates, and a plurality of heat transfer fins. The plurality of heating sleeves are all vertically fixed inside the tank body, and two adjacent heating sleeves are connected by the heat transfer foam metal plates; the plurality of heating rods are respectively inserted into the plurality of heating sleeves; the plurality of heat transfer fins are respectively fixed on the outer sides of the plurality of heating sleeves.

[0009] By adopting the above technical solutions, the beneficial effects of the present invention are:

[0010] It can not only improve the heat transfer efficiency of the tank body during the hydrogen absorption and desorption process, but also reduce the influence of the expansion stress of the hydrogen storage material on the service life of the tank body.

[0011] Furthermore, molten salt is filled in the gap between the heating rod and the heating sleeve.

[0012] Furthermore, the magnesium-based solid-state hydrogen storage tank body further includes a thermocouple, and the thermocouple is vertically inserted at the central position inside the tank body.

[0013] Furthermore, the plurality of heating sleeves are arranged in a triangular pattern.

[0014] Furthermore, the tank body is made of stainless steel; the heat transfer fins and the heat transfer foam metal plates are both made of high thermal conductivity copper material.

[0015] A magnesium-based solid-state hydrogen storage system, comprising a gas valve, a flow meter, a vacuum pump, a control cabinet, and a magnesium-based solid-state hydrogen storage tank body as described above. The gas valve, the flow meter, and the hydrogen inlet and outlet are sequentially connected and communicated through pipelines; the vacuum pump is connected and communicated with the tank body; the control cabinet is electrically connected to the heating rod, the thermocouple, the gas valve, the flow meter, and the vacuum pump respectively.

[0016] It can be seen that the present invention provides a magnesium-based solid-state hydrogen storage tank body and system. Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) Improve hydrogen storage efficiency: The efficient heat conduction structure (heat transfer fins, heat transfer foam metal plates) can quickly and evenly transfer heat, significantly improving the hydrogen absorption and desorption reaction rate of the magnesium-based solid-state hydrogen storage material, thereby effectively improving the efficiency of the entire hydrogen absorption and desorption process;

[0018] 2) Increase service life: The heat transfer foam metal plate can effectively relieve the influence of the stress generated by the hydrogen absorption and desorption of the magnesium-based solid-state hydrogen storage material on the internal structure of the tank body;

[0019] 3) Ensure performance, safety and stability: The precise temperature monitoring and control systems cooperate with each other to timely adjust the temperature of the heating rod, keeping the hydrogen storage material always within the appropriate reaction temperature range, ensuring the stability and consistency of the hydrogen storage performance. The control cabinet can control the vacuum pump, flowmeter and gas valves to timely replace the inert gas inside the tank and perform vacuum treatment, guaranteeing the safety of the tank;

[0020] 4) Improve system reliability: The precise regulation of the hydrogen pressure by the gas valve, the effective control of the hydrogen flow by the flowmeter, and the intelligent management of the control cabinet enable the entire hydrogen storage system to operate under stable conditions, reducing the impact of factors such as pressure and flow fluctuations on the hydrogen storage effect, extending the service life of the system, and improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0022] Figure 1 The drawings are the structural schematic diagrams of a magnesium-based solid hydrogen storage tank provided by the present invention;

[0023] Figure 2 The drawings are the structural schematic diagrams of the heating and heat transfer components provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Such as Figure 1-2As shown in the figure, an embodiment of the present invention discloses a magnesium-based solid-state hydrogen storage tank body, which includes a tank body 1 and a heating and heat transfer component 2 located inside the tank body 1. The tank body 1 has a hydrogen inlet and outlet 11 and a material filling port 12, both of which are hermetically treated. The heating and heat transfer component 2 includes a plurality of heating sleeves 21, a plurality of heating rods, a plurality of heat transfer foam metal plates 22 and a plurality of heat transfer fins 23. The plurality of heating sleeves 21 are all vertically fixed inside the tank body 1, and adjacent two heating sleeves 21 are connected by the heat transfer foam metal plates 22. In this embodiment, the plurality of heating sleeves 21 are arranged in a triangular pattern; the plurality of heating rods are respectively inserted into the plurality of heating sleeves 21; the plurality of heat transfer fins 23 are respectively fixed on the outer sides of the plurality of heating sleeves 21. The present invention can not only improve the heat transfer efficiency of the tank body during the hydrogen absorption and release process, but also reduce the influence of the expansion stress of the hydrogen storage material on the service life of the tank body.

[0026] In order to further optimize the technical solution of the present invention, molten salt is filled in the gap between the heating rod and the heating sleeve 21, which can significantly improve the heat conduction efficiency.

[0027] Specifically, a magnesium-based solid-state hydrogen storage tank body further includes a thermocouple, which is vertically inserted at the central position inside the tank body 1 for measuring the temperature of the magnesium-based solid-state hydrogen storage material.

[0028] Specifically, the tank body 1 is made of stainless steel; the heat transfer fins 23 and the heat transfer foam metal plates 22 are both made of high thermal conductivity copper material.

[0029] An embodiment of the present invention also discloses a magnesium-based solid-state hydrogen storage system with high integration, which includes a gas valve, a flow meter, a vacuum pump, a control cabinet and a magnesium-based solid-state hydrogen storage tank body as described above. The gas valve, the flow meter and the hydrogen inlet and outlet 11 are sequentially connected and communicated through pipelines. The open end of the gas valve is connected to a hydrogen source or an argon source for adjusting the hydrogen pressure entering the inside of the tank body 1 or performing an inert gas replacement inside the tank body 1; the vacuum pump is connected and communicated with the tank body 1; the control cabinet is electrically connected to the heating rod, the thermocouple, the gas valve, the flow meter and the vacuum pump respectively. Among them, the gas valve is an electric valve and the flow meter is an electromagnetic flow meter. The control cabinet can control the heating temperature of the heating rod, control the opening and closing of the gas valve, display the temperature of the thermocouple, control the hydrogen flow rate of the flow meter, and control the vacuum pump to evacuate the inside of the tank body 1.

[0030] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0031] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnesium-based solid-state hydrogen storage tank body, comprising a tank body and a heating and heat transfer component located inside the tank body, the tank body having a hydrogen inlet / outlet and a material filling port, characterized in that, The heating and heat transfer assembly includes a plurality of heating sleeves, a plurality of heating rods, a plurality of heat transfer foam metal plates, and a plurality of heat transfer fins. The plurality of heating sleeves are all vertically fixed inside the tank body, and two adjacent heating sleeves are connected by the heat transfer foam metal plates; the plurality of heating rods are respectively inserted into the plurality of heating sleeves; the plurality of heat transfer fins are respectively fixed on the outer sides of the plurality of heating sleeves.

2. The magnesium-based solid-state hydrogen storage tank according to claim 1, characterized in that, The gap between the heating rod and the heating sleeve is filled with molten salt.

3. A magnesium-based solid-state hydrogen storage tank according to claim 1, characterized in that, The magnesium-based solid-state hydrogen storage tank body further includes a thermocouple, which is vertically inserted at the central position inside the tank body.

4. A magnesium-based solid-state hydrogen storage tank according to claim 1, wherein The plurality of heating sleeves are arranged in a triangular pattern.

5. A magnesium-based solid-state hydrogen storage tank according to claim 1, characterized in that, The tank body is made of stainless steel; the heat transfer fins and the heat transfer foam metal plates are both made of high thermal conductivity copper material.

6. A magnesium-based solid-state hydrogen storage system, characterized in that, It includes a gas valve, a flow meter, a vacuum pump, a control cabinet, and a magnesium-based solid-state hydrogen storage tank body according to any one of claims 1-5. The gas valve, the flow meter, and the hydrogen inlet and outlet are sequentially connected and communicated through pipelines; the vacuum pump is connected and communicated with the tank body; the control cabinet is electrically connected to the heating rod, the thermocouple, the gas valve, the flow meter, and the vacuum pump respectively.

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