Multi-element magnesium-based hydrogen storage alloy preparation device

Abstract

The utility model provides a multi-element magnesium-based hydrogen storage alloy preparation device. The preparation device comprises a reaction chamber, the rapid quenching pressure unit is arranged in the reaction chamber and comprises a gas inlet pipeline and a swirling gas pipeline, at least part of the gas inlet pipeline extends out of the reaction chamber, and the swirling gas pipeline is obliquely arranged at an inclination angle of 45 degrees relative to the gas inlet pipeline; the smelting and rapid quenching unit is arranged in the reaction chamber; the smelting and rapid quenching unit comprises a drip-type crucible arranged in the reaction chamber, a reaction product is stored in the drip-type crucible, and the inlet end of the drip-type crucible is communicated with the gas outlet end of the swirling gas pipeline, so that inert gas is conveyed into the drip-type crucible through the obliquely arranged swirling gas pipeline; applying uniform pressure to the reaction product in the molten state in the dripping type crucible, so that the reaction product drips out from the bottom of the dripping type crucible; the problem that in the prior art, the pressure applied to the to-be-reacted material is not uniform due to airflow formed by conveying inert gas into the to-be-reacted material is solved.

Description

Technical Field

[0001] This utility model relates to the field of magnesium-based hydrogen storage alloy preparation technology, and more specifically, to a multi-element magnesium-based hydrogen storage alloy preparation device. Background Technology

[0002] Against the backdrop of the continuous development and application of hydrogen energy storage technology, solid-state hydrogen storage materials have attracted widespread attention due to their high storage density and safety. Magnesium-based hydrogen storage alloys, as an important class of solid-state hydrogen storage materials, have become a research hotspot due to the high theoretical hydrogen storage capacity and abundant resources of magnesium. However, the high hydrogen absorption and desorption temperatures and slow rates encountered by magnesium-based alloys during hydrogen storage limit their widespread application in practice. To address this technical bottleneck, researchers have proposed and attempted various improvement schemes, including but not limited to material nanostructuring, catalyst doping, and alloying.

[0003] In the alloying process for preparing magnesium-based hydrogen storage materials, smelting and rapid quenching are key steps. Smelting is used to mix metallic elements into an alloy, while rapid quenching involves rapidly cooling the alloy after melting to refine the grains and improve the material's hydrogen storage performance. Currently, common smelting and rapid quenching equipment typically includes separate smelting and rapid quenching systems. This separate structure not only results in bulky equipment and complex operation, but also makes the alloy material prone to compositional segregation during the transition between smelting and rapid quenching, affecting its hydrogen storage performance.

[0004] In the preparation of multi-component magnesium-based hydrogen storage alloys, pressure needs to be applied to the reactants. However, in the prior art, when inert gas is introduced into the preparation device, the gas flow formed by the inert gas will apply uneven pressure to the reactants in the preparation device, affecting the microstructure of the alloy and the final hydrogen storage performance. Utility Model Content

[0005] The main objective of this invention is to provide a multi-element magnesium-based hydrogen storage alloy preparation device to solve the problem in the prior art where the airflow formed by conveying inert gas to the material to be reacted leads to uneven pressure applied to the material.

[0006] To achieve the above objectives, according to one aspect of the present invention, a multi-element magnesium-based hydrogen storage alloy preparation apparatus is provided, comprising:

[0007] Reaction chamber;

[0008] A rapid quenching pressure unit is located in the reaction chamber. The rapid quenching pressure unit includes an air inlet pipe and a cyclone pipe. At least a portion of the air inlet pipe extends to the outside of the reaction chamber. The cyclone pipe is inclined at a 45-degree angle relative to the air inlet pipe.

[0009] A rapid quenching unit for melting is located within a reaction chamber. The rapid quenching unit includes a drip-type crucible located within the reaction chamber. The drip-type crucible stores reaction products. The inlet end of the drip-type crucible is connected to the outlet end of a cyclone pipe to deliver inert gas into the drip-type crucible through the inclined cyclone pipe. This applies uniform pressure to the molten reaction products within the drip-type crucible, causing the reaction products to drip out from the bottom of the drip-type crucible.

[0010] Furthermore, the rapid quenching unit for smelting also includes:

[0011] An induction heating component is disposed within a reaction chamber. The induction heating component includes a spiral induction coil, at least a portion of which is disposed outside the drip-type crucible to heat the drip-type crucible.

[0012] Furthermore, the rapid quenching unit for smelting also includes:

[0013] The detection component is connected to the induction heating component. One end of the detection component is located at the inlet end of the drip crucible to detect the real-time temperature of the drip crucible. When the real-time temperature is higher than the set temperature, inert gas is supplied into the drip crucible.

[0014] Furthermore, the rapid quenching unit for smelting also includes:

[0015] The gas plate has one side connected to the outlet end with an inlet pipe. The swirling gas pipe is inclined inside the gas plate. The inlet end of the drip crucible is connected to the swirling gas pipe through the gas plate.

[0016] Furthermore, the rapid quenching unit for smelting also includes:

[0017] The melting and fixing component is located on the inner wall of the reaction chamber. The melting and fixing component is provided with fixing holes. The inlet end of the drip crucible is located in the fixing holes so as to fix the drip crucible through the fixing holes.

[0018] Furthermore, the inner wall of the fixing hole is provided with an internal thread, and the outer wall of the inlet end of the drip crucible is provided with an external thread. The internal thread and the external thread are matched to fix the drip crucible on the melting fixing component.

[0019] Furthermore, the preparation apparatus also includes a gas replacement unit, which comprises:

[0020] The displacement air inlet and displacement air outlet are located on the side wall of the reaction chamber, with the displacement air inlet located below the displacement air outlet.

[0021] The vacuum pumping unit has its pumping end connected to the displacement outlet to evacuate the air in the reaction chamber and remove the air from the reaction chamber.

[0022] Furthermore, the gas replacement unit also includes:

[0023] The argon gas supply component has its outlet connected to the displacement inlet so that argon gas can be introduced into the reaction chamber after the vacuum component has evacuated the air in the reaction chamber.

[0024] Furthermore, the apparatus for preparing multi-element magnesium-based hydrogen storage alloys also includes a collection unit located below the drip crucible. The collection unit includes a container and a cooling plate, with the cooling plate nested inside the container in a matching manner. The cooling plate contains quenching oil to cool the product dripping from the bottom of the drip crucible.

[0025] Furthermore, a feed inlet is also provided on the side of the gas inlet pipe at the top of the reaction chamber;

[0026] The preparation apparatus also includes a feed pipe, one end of which enters the drip crucible from the feed inlet to deliver the reaction raw materials into the drip crucible.

[0027] By applying the technical solution of this utility model, since the gas inlet pipe in the rapid quenching pressure unit is set at an inclination, the inert gas (argon is used in this embodiment) moves in a spiral form in the drip crucible, which can uniformly apply pressure to the molten reaction products, avoiding the situation where only the central part of the alloy melt drips out first, and ensuring the uniform dripping of the alloy melt.

[0028] The use of inert gases, such as argon, provides a stable gaseous protective environment during the preparation process, avoiding the use of flammable and explosive gases and significantly improving the safety of the preparation process.

[0029] This invention employs a melting and push-type rapid quenching process to synthesize multi-element magnesium-based hydrogen storage alloys in one step. This avoids the problems of component segregation and element dissolution during multi-step melting and quenching processes, simplifies the process flow, and improves production efficiency.

[0030] The preparation device has a simple structure, high modularity, is easy to scale up, is suitable for mass production, and has high reliability, which reduces production costs. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0032] Figure 1 A schematic diagram of the structure of the multi-element magnesium-based hydrogen storage alloy preparation device according to an embodiment of this application is shown;

[0033] Figure 2A schematic diagram of a melting and fixing component according to an embodiment of this application is shown;

[0034] Figure 3 A schematic diagram showing the hydrogen absorption and desorption performance of the hydrogen storage material according to an embodiment of this application at 350 degrees Celsius is illustrated.

[0035] The above figures include the following reference numerals:

[0036] 100. Reaction chamber;

[0037] 200. Rapid quenching pressure unit; 201. Inlet pipe; 202. Swirl pipe; 203. First through hole; 204. Second through hole; 205. Third through hole;

[0038] 300. Melting and rapid quenching unit; 301. Drip-type crucible; 302. Induction heating component; 303. Melting and fixing component;

[0039] 400. Gas replacement unit; 401. Replacement inlet; 402. Replacement outlet;

[0040] 500. Collection unit; 501. Container tank;

[0041] 600, feed pipe; 700, air coil. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Against the backdrop of the continuous development and application of hydrogen energy storage technology, solid-state hydrogen storage materials have attracted widespread attention due to their high storage density and safety. Magnesium-based hydrogen storage alloys, as an important class of solid-state hydrogen storage materials, have become a research hotspot due to the high theoretical hydrogen storage capacity and abundant resources of magnesium. However, the high hydrogen absorption and desorption temperatures and slow rates encountered by magnesium-based alloys during hydrogen storage limit their widespread application in practice. To address this technical bottleneck, researchers have proposed and attempted various improvement schemes, including but not limited to material nanostructuring, catalyst doping, and alloying.

[0044] In the alloying process for preparing magnesium-based hydrogen storage materials, smelting and rapid quenching are key steps. Smelting is used to mix metallic elements into an alloy, while rapid quenching involves rapidly cooling the alloy after melting to refine the grains and improve the material's hydrogen storage performance. Currently, common smelting and rapid quenching equipment typically includes separate smelting and rapid quenching systems. This separate structure not only results in bulky equipment and complex operation, but also makes the alloy material prone to compositional segregation during the transition between smelting and rapid quenching, affecting its hydrogen storage performance.

[0045] In the preparation of multi-component magnesium-based hydrogen storage alloys, pressure needs to be applied to the reactants. However, in the prior art, when inert gas is introduced into the preparation device, the gas flow formed by the inert gas will apply uneven pressure to the reactants in the preparation device, affecting the microstructure of the alloy and the final hydrogen storage performance.

[0046] This application first provides a device for preparing a multi-element magnesium-based hydrogen storage alloy, comprising:

[0047] Reaction chamber 100;

[0048] The rapid quenching pressure unit 200 is located in the reaction chamber 100. The rapid quenching pressure unit 200 includes an air inlet pipe 201 and a cyclone pipe 202. At least a portion of the air inlet pipe 201 extends to the outside of the reaction chamber 100. The cyclone pipe 202 is inclined relative to the air inlet pipe 201 at an angle of 45 degrees.

[0049] A rapid quenching unit 300 is disposed within a reaction chamber 100. The rapid quenching unit 300 includes a drip-type crucible 301 disposed within the reaction chamber 100. The drip-type crucible 301 stores reaction products. The inlet end of the drip-type crucible 301 is connected to the outlet end of a cyclone pipe 202, so that inert gas is sequentially supplied to the drip-type crucible 301 through the inlet pipe 201 and the cyclone pipe 202, so that the inert gas moves in a spiral manner on the inner wall of the drip-type crucible 301, so as to apply uniform pressure to the molten reaction products in the drip-type crucible 301, so that the reaction products drip out from the bottom of the drip-type crucible 301.

[0050] Specifically, such as Figures 1 to 3As shown, the multi-element magnesium-based hydrogen storage alloy preparation device provided in this application includes a reaction chamber 100. A rapid quenching pressure unit 200 is provided within the reaction chamber 100. The rapid quenching pressure unit 200 includes an inlet pipe 201. One end of the inlet pipe 201 extends from the top of the reaction chamber 100 into the reaction chamber 100 to deliver inert gas into the reaction chamber 100. In this embodiment, argon is used as the inert gas. The outlet end of the inlet pipe 201 is connected to a cyclone pipe 202. The cyclone pipe 202 is inclined, and the inert gas enters from the inlet pipe 201 into the cyclone pipe 202. 2. Furthermore, since the outlet of the swirling gas pipe 202 is located at the inlet of the dripping crucible 301, when the inert gas comes into contact with the inner wall of the dripping crucible 301 from the swirling gas pipe 202, it will apply uniform pressure to the molten reaction products in the dripping crucible 301 in a spiral manner, so that the molten reaction products can drip out from the bottom of the dripping crucible 301. Because the inert gas moves in a spiral manner in the dripping crucible 301, the molten reaction products in the dripping crucible 301 will descend evenly, instead of only a small portion of the reaction products in the very center dripping out first.

[0051] The reaction chamber 100 includes a reaction chamber body with an opening. The reaction chamber 100 also includes a cover for opening or closing the opening. A first through hole 203 is provided on the cover, through which an air inlet pipe 201 extends. A second through hole 204 is also provided on the cover, through which a feed pipe 600 extends. A third through hole 205 is also provided on the cover, through which a cyclone pipe 202 enters.

[0052] Because the cyclone pipe 202 in the rapid quenching pressure unit 200 is inclined, the inert gas (argon is used in this embodiment) moves in a spiral form in the drip crucible 301, which can uniformly apply pressure to the molten reaction products, avoiding the situation where only the central part of the alloy melt drips out first, and ensuring the uniform dripping of the alloy melt.

[0053] The spiral airflow enables the molten alloy liquid to be cooled and quenched as quickly as it falls into the subsequent collection unit 500.

[0054] The use of inert gases, such as argon, provides a stable gaseous protective environment during the preparation process, avoiding the use of flammable and explosive gases and significantly improving the safety of the preparation process.

[0055] This invention employs a melting and push-type rapid quenching process to synthesize multi-element magnesium-based hydrogen storage alloys in one step. This avoids the problems of component segregation and element dissolution during multi-step melting and quenching processes, simplifies the process flow, and improves production efficiency.

[0056] The preparation device has a simple structure, high modularity, is easy to scale up, is suitable for mass production, and has high reliability, which reduces production costs.

[0057] Furthermore, the melting and quenching unit 300 also includes an induction heating component 302, which is disposed in the reaction chamber 100. The induction heating component 302 includes a spiral induction coil, which is at least partially disposed outside the drip crucible 301 to heat the drip crucible 301.

[0058] Specifically, the melting and quenching unit 300 also includes an induction heating component 302 disposed in the reaction chamber 100 and surrounding the outside of the drip crucible 301. The induction heating component 302 includes a spiral induction coil to heat the material in the drip crucible 301.

[0059] The design of using a spiral induction coil as the induction heating element 302 surrounding the outside of the drip-shaped crucible can bring the following technical effects:

[0060] The spiral induction coil can generate an induced current in the entire drip crucible 301 to achieve uniform heating, thereby ensuring that the material in the drip crucible 301 is heated evenly and avoiding inconsistent melt composition and uneven grain size caused by local overheating or uneven heating.

[0061] By precisely controlling the temperature of the induction coil, accurate temperature control of the melting process can be achieved, which is crucial for preparing magnesium-based hydrogen storage alloys with stable performance. This can optimize the microstructure of the alloy and improve its hydrogen storage performance.

[0062] The induction heating element 302 surrounding the drip crucible 301 can promote the full fusion of alloying elements, ensure the uniformity of alloy composition, and facilitate the formation of alloy materials with excellent hydrogen storage performance.

[0063] The use of spiral induction coils simplifies the design of induction heating components, reduces the complexity of the equipment, and facilitates equipment maintenance and operation.

[0064] Furthermore, the smelting and rapid quenching unit 300 also includes: a gas plate 700, one side of which is connected to the outlet end of the gas inlet pipe 201, a swirling gas pipe 202 is inclinedly disposed inside the gas plate 700, and the inlet end of the drip crucible 301 is connected to the swirling gas pipe 202 through the gas plate 700.

[0065] Specifically, the melting and quenching unit 300 also includes a detection component connected to the induction heating component 302. The detection end of the detection component is located at the inlet end of the drip crucible 301, which is used to detect the temperature of the drip crucible 301 in real time. When the temperature reaches the set temperature, inert gas needs to be delivered into the drip crucible 301 through the swirl pipe 202 above the drip crucible 301 to apply downward pressure so that the molten alloy can drip out of the outlet of the drip crucible 301.

[0066] The smelting and rapid quenching unit 300 also includes a gas plate 700, with multiple swirling gas pipes 202 disposed inside the gas plate 700. The air inlet of the gas plate 700 is connected to the air outlet of the air inlet pipe 201. When the gas enters the gas plate 700 from the air inlet pipe 201, it will be diverted by the four swirling gas pipes 202, so that the airflow output from the swirling gas pipes 202 can move in a spiral form on the inner wall of the drip crucible 301. The inlet end of the drip crucible 301 is threadedly connected to the gas plate 700.

[0067] The detection component monitors the temperature of the drip crucible 301 in real time, and then delivers inert gas into the drip crucible 301 after the temperature reaches the set temperature, thus realizing the intelligent and automated gas delivery process.

[0068] The introduction of the gas plate 700, through the four swirling gas pipes 202, diverts the inert gas, ensuring the uniform distribution of the gas in the drip crucible 301, further optimizing the uniformity of pressure application, which is beneficial to the uniform preparation of alloy materials.

[0069] The gas moves in a spiral shape in the four swirling pipes 202, which can provide a uniform downward pressure, so that the molten alloy drips evenly through the dripping hole of the drip crucible 301 into the quenching oil below to complete the rapid quenching process and achieve the effect of refining the grains.

[0070] The combined use of the detection component and the induction heating component 302, along with the precise management of airflow by the air plate 700, makes the control of key parameters (such as pressure, temperature, and gas flow rate) during the preparation process more precise, which is conducive to obtaining alloy materials with consistent performance.

[0071] The integrated design of the detection component, induction heating component 302, and air plate 700 improves the integration and automation level of the equipment, simplifies the operation process, reduces the possibility of human error, and enhances the safety and stability of production.

[0072] Furthermore, the melting and quenching unit 300 also includes a melting fixing component 303, which is disposed on the inner wall surface of the reaction chamber 100. The melting fixing component 303 is provided with a fixing hole, and the inlet end of the drip crucible 301 is disposed in the fixing hole so as to fix the drip crucible 301 through the fixing hole.

[0073] Furthermore, the inner wall of the fixing hole is provided with an internal thread, and the outer wall of the inlet end of the drip crucible 301 is provided with an external thread. The internal thread and the external thread are matched to fix the drip crucible 301 on the melting fixing component 303.

[0074] Specifically, the melting and quenching unit 300 also includes a melting fixing component 303, which is located on the inner wall of the reaction chamber 100. A fixing hole is provided on the melting fixing component 303, and at least part of the inlet end of the drip crucible 301 is located in the fixing hole. An internal thread is provided on the inner wall surface of the fixing hole, and an external thread is provided on the outer wall surface of the inlet end of the drip crucible 301. The internal thread and the external thread are used in conjunction to fix the drip crucible 301 on the melting fixing component 303.

[0075] The fixing hole on the melting fixing component 303 is threaded to the inlet end of the drip crucible 301, which ensures the stable positioning of the drip crucible 301 during heating and rapid quenching, avoids crucible displacement caused by equipment vibration or improper operation, and ensures the smooth progress of the process.

[0076] The threaded connection design makes the installation and disassembly of the drip crucible 301 very quick, facilitating equipment maintenance and cleaning, and improving production efficiency.

[0077] The internal thread on the inner wall of the fixing hole fits tightly with the external thread on the outer wall of the drip crucible 301, which improves the sealing performance of the device, prevents the intrusion of external air or moisture, ensures the melting and rapid quenching process under inert gas protection, and is beneficial to the preparation quality of alloy materials.

[0078] The design of the fixing hole ensures the precise alignment of the inlet end of the drip crucible 301 with the swirling gas pipe 202, ensuring that the gas flow can accurately enter the crucible and achieve the goal of gas spiral motion and uniform pressure application to the molten reaction products.

[0079] The threaded connection not only provides good sealing performance, but also enhances the structural strength between the drip crucible 301 and the melting stationary component 303, improving the durability and reliability of the equipment and reducing maintenance costs.

[0080] Furthermore, the preparation apparatus also includes a gas replacement unit 400, which comprises:

[0081] The displacement air inlet 401 and displacement air outlet 402 are provided on the side wall of the reaction chamber 100, with the displacement air inlet 401 located below the displacement air outlet 402.

[0082] The vacuuming component has its pumping end connected to the displacement outlet 402 to perform vacuuming treatment on the air in the reaction chamber 100, so as to remove the air in the reaction chamber 100.

[0083] The argon gas supply component has its outlet connected to the displacement inlet 401 so that argon gas can be introduced into the reaction chamber 100 after the vacuum component has evacuated the air in the reaction chamber 100.

[0084] The apparatus for preparing multi-element magnesium-based hydrogen storage alloys also includes a collection unit 500, which is located below the drip crucible 301. The collection unit 500 includes a container 501 and a cooling plate. The cooling plate is nested inside the container 501 in a way that fits the container 501. The cooling plate contains quenching oil to cool the product dripping from the bottom of the drip crucible 301.

[0085] Specifically, the preparation apparatus further includes a gas replacement unit 400, which includes a replacement inlet 401 and a replacement outlet 402 disposed on the side wall of the reaction chamber 100. The replacement inlet 401 is located below the replacement outlet 402. The preparation apparatus also includes a vacuum pumping component, the pumping end of which is connected to the replacement outlet 402. This component can extract the air in the reaction chamber 100 through the replacement outlet 402, and supply the air to the reaction chamber through the replacement inlet 401 by the argon gas supply component. Argon gas is supplied into chamber 100. This process needs to be repeated more than three times to ensure that there is no air in the reaction chamber 100. A collection unit 500 is provided below the drip crucible 301. The collection unit 500 includes a container 501 and a cooling plate nested inside the container 501. The cooling plate contains quenching oil. The temperature of the quenching oil can be controlled by the cooling plate, thereby cooling the product dripping from the bottom of the drip crucible 301. The shape of the cooling plate is adapted to the container 501.

[0086] The design of the displacement inlet 401 located below the displacement outlet 402 utilizes the gas density difference, allowing argon gas to enter the reaction chamber 100 from the bottom while air is extracted from the top, thus achieving efficient gas displacement. The use of a vacuum pump further purifies the environment within the reaction chamber 100, ensuring that the entire preparation process is carried out under inert gas protection, preventing oxidation of the alloy material during melting and rapid quenching.

[0087] By precisely controlling the gas replacement unit 400, the specific atmospheric conditions required within the reaction chamber 100 can be maintained. This is crucial for the preparation of alloy materials, ensuring stability during the preparation process and improving the performance of the alloy materials.

[0088] Using argon as a protective gas greatly improves operational safety compared to other gases such as hydrogen or oxygen, because argon is non-flammable and non-explosive, reducing the risk of accidents.

[0089] The collection unit 500, located below the drip-type crucible 301, includes a container 501, a cooling water pipe, and quenching oil, enabling rapid and uniform cooling of the alloy melt. The rational layout of the displacement inlet 401 and displacement outlet 402, along with the use of vacuum components, reduces the energy consumption required for gas displacement.

[0090] Furthermore, the preparation apparatus also includes: a feed inlet is provided on the top of the reaction chamber 100 on one side of the air inlet pipe 201;

[0091] The preparation apparatus also includes a feed pipe 600, one end of which enters from the feed port into the drip crucible 301 to deliver the reaction raw materials into the drip crucible 301.

[0092] Specifically, the preparation apparatus also includes a feed inlet located at the top of the reaction chamber 100 on one side of the gas inlet pipe 201, and the discharge end of the feed inlet is connected to the drip crucible 301.

[0093] The feed inlet is directly connected to the drip crucible 301, which simplifies the raw material addition process, avoids the pollution and loss that may occur during the raw material transfer process in the traditional feeding method, and improves the accuracy and efficiency of raw material addition.

[0094] The top-feed design facilitates precise control of the amount of raw materials added, especially when adding small amounts of additives. It ensures that the additives are accurately added to the crucible, avoiding uneven distribution of raw materials due to improper feeding position, which could affect the alloy properties.

[0095] The feed inlet is located at the top of the reaction chamber 100 and connected to the drip crucible 301. Operators do not need to directly contact the high-temperature melt when adding raw materials, which reduces operational risks and improves safety in the production process.

[0096] The direct connection between the top feed inlet and the drip-type crucible 301, combined with the function of the induction heating component 302, enables the newly added raw materials to mix rapidly with the existing melt, improving the uniformity of the raw material mixing and facilitating the preparation of alloy materials with consistent properties. For example... Figure 3 As shown in the figure, the horizontal axis represents hydrogen storage capacity and the vertical axis represents pressure. This figure shows that when the hydrogen storage material is tested at a temperature of 350°C, the maximum hydrogen storage capacity can reach 6.7 wt%.

[0097] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0098] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0099] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0100] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0101] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0102] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preparing a multi-element magnesium-based hydrogen storage alloy, characterized in that, include: Reaction chamber (100); A rapid quenching pressure unit (200) is disposed in the reaction chamber (100). The rapid quenching pressure unit (200) includes an air inlet pipe (201) and a cyclone pipe (202). At least a portion of the air inlet pipe (201) extends to the outside of the reaction chamber (100). The cyclone pipe (202) is inclined relative to the air inlet pipe (201) at an angle of 45 degrees. A rapid quenching unit (300) is provided in the reaction chamber (100); the rapid quenching unit (300) includes a drip crucible (301) provided in the reaction chamber (100), the drip crucible (301) stores reaction products, the inlet end of the drip crucible (301) is connected to the outlet end of the cyclone pipe (202) so as to deliver inert gas into the drip crucible (301) through the inclined cyclone pipe (202) to apply uniform pressure to the reaction products in the molten state in the drip crucible (301) so that the reaction products drip out from the bottom of the drip crucible (301).

2. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 1, characterized in that, The rapid quenching unit (300) also includes: An induction heating component (302) is disposed inside the reaction chamber (100). The induction heating component (302) includes a spiral induction coil, at least a portion of which is disposed outside the drip crucible (301) to heat the drip crucible (301).

3. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 2, characterized in that, The rapid quenching unit (300) also includes: A detection component is connected to the induction heating component (302). One end of the detection component is located at the inlet end of the drip crucible (301) to detect the real-time temperature of the drip crucible (301) and to supply the inert gas into the drip crucible (301) when the real-time temperature is greater than the set temperature.

4. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 1, characterized in that, The rapid quenching unit (300) also includes: A gas plate (700) is provided, one side of which is connected to the outlet end of the air inlet pipe (201). The swirling pipe (202) is inclinedly disposed inside the gas plate (700). The inlet end of the drip crucible (301) is connected to the swirling pipe (202) through the gas plate (700).

5. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 1, characterized in that, The rapid quenching unit (300) also includes: A melting and fixing component (303) is provided on the inner wall surface of the reaction chamber (100). The melting and fixing component (303) is provided with a fixing hole. The inlet end of the drip crucible (301) is provided in the fixing hole so as to fix the drip crucible (301) through the fixing hole.

6. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 5, characterized in that, The inner wall of the fixing hole is provided with an internal thread, and the outer wall of the inlet end of the drip crucible (301) is provided with an external thread. The internal thread is adapted to the external thread to fix the drip crucible (301) on the melting fixing component (303).

7. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 1, characterized in that, The preparation apparatus further includes a gas replacement unit (400), the gas replacement unit (400) comprising: The displacement air inlet (401) and displacement air outlet (402) are provided on the side wall of the reaction chamber (100), with the displacement air inlet (401) located below the displacement air outlet (402); A vacuum pumping component, wherein the pumping end of the vacuum pumping component is connected to the displacement outlet (402) to perform vacuum treatment on the air in the reaction chamber (100) to discharge the air in the reaction chamber (100).

8. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 7, characterized in that, The gas replacement unit (400) further includes: An argon gas supply component, the outlet of which is connected to the displacement inlet (401), is used to supply argon gas into the reaction chamber (100) after the vacuuming component has evacuated the air in the reaction chamber (100).

9. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 2, characterized in that, The apparatus for preparing the multi-element magnesium-based hydrogen storage alloy also includes a collection unit (500), which is located below the drip crucible (301). The collection unit (500) includes a container (501) and a cooling plate. The cooling plate is nested inside the container (501) in a way that is compatible with the container (501). The cooling plate contains quenching oil to cool the product dripping from the bottom of the drip crucible (301).

10. The apparatus for preparing multi-element magnesium-based hydrogen storage alloys according to claim 1, characterized in that, The top of the reaction chamber (100) is also provided with a feed inlet on one side of the air inlet pipe (201); The preparation apparatus further includes a feed pipe (600), one end of which enters from the feed port into the drip crucible (301) to deliver the reaction raw materials into the drip crucible (301).

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