A hydrogen storage system with vortex tube, control method and control device

Abstract

The present invention provides a hydrogen storage system with a vortex tube, a control method and a control device, and relates to the field of hydrogen storage technology. The hydrogen storage system with a vortex tube includes a solid-state hydrogen storage device, a first vortex tube and a second vortex tube, and the solid-state hydrogen storage device is provided with an air pipe and a heat exchange chamber; the cold end air outlet of the first vortex tube is connected to the air pipe through a first valve, and the hot end air outlet of the first vortex tube is connected to the air inlet of the first vortex tube through a heat dissipation fin tube group, and the air inlet of the first vortex tube is also connected to a second valve; the air inlet of the second vortex tube is connected to the air pipe through a third valve, the hot end air outlet of the second vortex tube is connected to the air inlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube is connected to the air outlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube is also connected to a fourth valve. The hydrogen storage system with a vortex tube of the present invention does not need to use water as a medium, thereby eliminating additional energy consumption, achieving a more convenient and energy-saving effect in the operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage, and in particular to a hydrogen storage system with a vortex tube, a control method and a control device. Background Art

[0002] Solid-state hydrogen storage technology utilizes the physical adsorption or chemical reaction of solid-state hydrogen storage materials to store hydrogen. In the process of solid-state hydrogen storage materials absorbing hydrogen, solid-state hydrogen storage materials will release heat, and in the process of solid-state hydrogen storage materials releasing hydrogen, solid-state hydrogen storage materials will absorb heat. Therefore, in actual application, the existing technology generally cools down the solid-state hydrogen storage device by passing cold water into the solid-state hydrogen storage device, and raises the temperature and pressure of the solid-state hydrogen storage device by passing hot water into the solid-state hydrogen storage device (heat exchange with the solid-state hydrogen storage material enables it to have sufficient energy to release hydrogen, and temperature and pressure increase are necessary conditions for releasing hydrogen). It can be seen that whether it is absorbing hydrogen or releasing hydrogen, the process requires the use of water as a medium for heat exchange. At the same time, the need to use cold water and hot water also requires additional energy consumption. The entire operation process is not convenient and energy-saving enough.

[0003] In response to the above problems, a more convenient and energy-saving hydrogen storage method is urgently needed. Summary of the invention

[0004] The object of the present invention is to provide a hydrogen storage system with a vortex tube, a control method and a control device, which do not need to use water as a medium, thereby eliminating additional energy consumption and achieving a more convenient and energy-saving effect in the operation process.

[0005] In a first aspect, the present invention provides a hydrogen storage system with a vortex tube, comprising:

[0006] A solid-state hydrogen storage device, wherein the solid-state hydrogen storage device is provided with an air pipe and a heat exchange cavity, wherein the air pipe is used to supply hydrogen gas to flow so that the solid-state hydrogen storage device absorbs hydrogen gas or releases hydrogen gas; and the heat exchange cavity is used to absorb the heat of hydrogen gas so that the solid-state hydrogen storage device is heated and pressurized;

[0007] A first vortex tube, wherein a cold end air outlet of the first vortex tube is connected to the air pipe through a first valve, and a hot end air outlet of the first vortex tube is connected to an air inlet of the first vortex tube through a heat dissipation fin tube group, and the air inlet of the first vortex tube is also connected to a second valve, and the second valve is used to control the inflow of hydrogen so that the solid-state hydrogen storage device absorbs hydrogen;

[0008] A second vortex tube, the air inlet of the second vortex tube is connected to the air pipe through a third valve, the hot end air outlet of the second vortex tube is connected to the air inlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube is connected to the air outlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube is also connected to a fourth valve, and the fourth valve is used to control the outflow of hydrogen so that the solid-state hydrogen storage device releases hydrogen.

[0009] The hydrogen storage system with vortex tubes provided by the present invention utilizes vortex tubes to generate low-temperature hydrogen and high-temperature hydrogen for heat exchange, thereby meeting the heat exchange requirements of absorbing and releasing hydrogen, but does not require the use of water as a medium, thereby reducing the use of cold water and hot water, and achieving a more convenient and energy-saving operation process.

[0010] Further, the first vortex tube and the second vortex tube each include a tube body, a cold end outlet and a hot end outlet, the tube body is provided with a vortex chamber, one side of the circumference of the vortex chamber is provided with an air inlet, and the vortex chamber is used to guide the hydrogen flowing in from the air inlet to form a vortex;

[0011] The cold end air outlet piece is arranged at one end of the tube body close to the vortex chamber, and the cold end air outlet piece is provided with a cold end air outlet connected to the vortex chamber. The hot end air outlet piece is arranged at one end of the tube body away from the vortex chamber, and the hot end air outlet piece is provided with a hot end air outlet connected to the vortex chamber.

[0012] By utilizing the energy transfer between the positive vortex and the directional vortex and the friction between the vortex and the inner wall of the tube, two streams of low-temperature hydrogen and high-temperature hydrogen with different temperatures are generated.

[0013] Furthermore, a spiral groove is provided on the inner peripheral surface of the vortex chamber, and the starting end of the groove is close to the cold end outlet and connected to the air inlet; the groove is used to guide the hydrogen flowing in from the air inlet to form a vortex.

[0014] The spiral grooves are provided to guide the flow of hydrogen, forcing it to flow in a spiral path, forming a free vortex of rotating flow.

[0015] Furthermore, the cold end air outlet piece is plugged into the tube body and sealedly connected to the tube body.

[0016] It is beneficial for the user to take out the cold end air outlet part separately for replacement or repair, and at the same time allows the user to replace only the damaged one while retaining the intact one, thereby achieving the effect of cost saving.

[0017] Furthermore, a sealing ring is provided between the cold end gas outlet piece and the tube body so that the cold end gas outlet piece and the tube body are sealed and connected.

[0018] Furthermore, the hot end air outlet piece is plugged into the tube body and is sealed with the tube body.

[0019] Furthermore, a sealing ring is provided between the hot end gas outlet piece and the tube body so that the hot end gas outlet piece and the tube body are sealed and connected.

[0020] In a second aspect, the present invention provides a control method for the above-mentioned hydrogen storage system with a vortex tube, wherein when the solid-state hydrogen storage device absorbs hydrogen, the following steps are performed:

[0021] A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and is input into the solid-state hydrogen storage device through the gas pipe;

[0022] When the solid-state hydrogen storage device releases hydrogen, the following steps are performed:

[0023] B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen, which is input into the heat exchange cavity to increase the temperature and pressure of the solid-state hydrogen storage device.

[0024] In the process of absorbing hydrogen, the solid-state hydrogen storage device releases heat and exchanges heat with the low-temperature hydrogen to achieve temperature neutralization, thereby achieving the purpose of cooling and reducing the pressure of the solid-state hydrogen storage device; in the process of releasing hydrogen, the solid-state hydrogen storage device absorbs the heat of the high-temperature hydrogen to achieve the purpose of heating and increasing the pressure of the solid-state hydrogen storage device.

[0025] Furthermore, the pressure of hydrogen flowing into the first vortex tube through the air inlet of the first vortex tube is greater than or equal to 0.2 MPa; the pressure of hydrogen flowing into the second vortex tube through the air inlet of the second vortex tube is greater than or equal to 0.2 MPa.

[0026] Ensure that the airflow obtains sufficient kinetic energy to form a free vortex, thereby generating two streams of low-temperature hydrogen and high-temperature hydrogen, thereby ensuring the normal operation of the hydrogen storage system with vortex tubes.

[0027] In a third aspect, the present invention provides a control device for the above-mentioned hydrogen storage system with vortex tube, comprising:

[0028] The first control module is used to perform the following steps when the solid-state hydrogen storage device absorbs hydrogen:

[0029] A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and is input into the solid-state hydrogen storage device through the gas pipe;

[0030] The second control module is used to perform the following steps when the solid-state hydrogen storage device releases hydrogen:

[0031] B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen, which is input into the heat exchange cavity to increase the temperature and pressure of the solid-state hydrogen storage device.

[0032] The control device provided by the present invention adopts a vortex tube to cool down and reduce the pressure of the solid-state hydrogen storage device when absorbing hydrogen, and to heat up and increase the pressure of the solid-state hydrogen storage device when releasing hydrogen. There is no need to use water as a medium, thereby eliminating additional energy consumption, making the operation process more convenient and energy-saving.

[0033] As can be seen from the above, the hydrogen storage system with vortex tubes provided by the present invention utilizes vortex tubes to form low-temperature hydrogen and high-temperature hydrogen. In the process of absorbing hydrogen, the low-temperature hydrogen absorbs the heat released by the solid-state hydrogen storage device to achieve cooling and pressure reduction of the solid-state hydrogen storage device. In the process of releasing hydrogen, the high-temperature hydrogen increases the temperature and pressure of the solid-state hydrogen storage device to meet the conditions for releasing hydrogen, thereby eliminating the use of water as a medium, thereby making the operation process more convenient. At the same time, because there is no need to use cold water and hot water, energy consumption is further reduced.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic structural diagram of a hydrogen storage system with a vortex tube provided in an embodiment of the present invention.

[0036] Figure 2 4 is a cross-sectional view of a vortex tube in an embodiment of the present invention.

[0037] Figure 3 A flow chart of a control method provided by an embodiment of the present invention.

[0038] Figure 4 A schematic diagram of the structure of a control device provided in an embodiment of the present invention.

[0039] Description of labels:

[0040] 100, solid-state hydrogen storage device; 110, air pipe; 200, first vortex tube; 210, first valve; 220, heat dissipation fin tube group; 230, second valve; 300, second vortex tube; 310, third valve; 320, fourth valve; 400, tube body; 410, vortex chamber; 420, air inlet; 500, cold end outlet; 600, hot end outlet; 700, first control module; 800, second control module. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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 the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0047] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of a hydrogen storage system with a vortex tube. The hydrogen storage system with a vortex tube includes:

[0049] The solid-state hydrogen storage device 100 is provided with an air pipe 110 and a heat exchange cavity (the heat exchange cavity is located inside the solid-state hydrogen storage device 100 and is not drawn in the drawings). The air pipe 110 is used to supply hydrogen to allow the solid-state hydrogen storage device 100 to absorb or release hydrogen; the heat exchange cavity is used to absorb the heat of hydrogen to increase the temperature and pressure of the solid-state hydrogen storage device 100;

[0050] A first vortex tube 200, a cold end air outlet of the first vortex tube 200 is connected to the air pipe 110 through a first valve 210, and a hot end air outlet of the first vortex tube 200 is connected to an air inlet of the first vortex tube 200 through a heat dissipation fin tube group 220, and the air inlet of the first vortex tube 200 is also connected to a second valve 230, and the second valve 230 is used to control the inflow of hydrogen so that the solid-state hydrogen storage device 100 absorbs hydrogen;

[0051] The second vortex tube 300, the air inlet of the second vortex tube 300 is connected to the air pipe 110 through the third valve 310, the hot end air outlet of the second vortex tube 300 is connected to the air inlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube 300 is connected to the air outlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube 300 is connected to the air outlet of the heat exchange chamber, and the cold end air outlet of the second vortex tube 300 is also connected to the fourth valve 320, and the fourth valve 320 is used to control the outflow of hydrogen so that the solid-state hydrogen storage device 100 releases hydrogen.

[0052] In this embodiment, when hydrogen is actually absorbed, hydrogen at a first temperature (for example, room temperature) flows into the first vortex tube 200 through the second valve 230, and low-temperature hydrogen (lower than the first temperature) and high-temperature hydrogen (higher than the first temperature) are formed under the action of the first vortex tube 200. The low-temperature hydrogen flows from the cold end outlet of the first vortex tube 200 through the gas pipe 110 into the solid hydrogen storage device 100 for storage. Since the solid hydrogen storage device 100 itself releases heat when absorbing hydrogen, the generated heat is heat-exchanged with the low-temperature hydrogen to achieve cooling and pressure reduction of the solid hydrogen storage device 100; and the high-temperature hydrogen flows from the hot end outlet of the first vortex tube 200 into the heat dissipation fin tube group 220, and the heat dissipation is carried out by contacting the heat dissipation fin tube group 220 with the outside air, so that the temperature of the high-temperature hydrogen drops back to the first temperature, and finally passes through the air inlet of the first vortex tube 200 again and is re-input into the first vortex tube 200.

[0053] When the hydrogen is actually released, the hydrogen at the second temperature flows into the second vortex tube 300 through the gas pipe 110, and then low-temperature hydrogen (lower than the second temperature) and high-temperature hydrogen (higher than the second temperature) are formed under the action of the second vortex tube 300. The low-temperature hydrogen flows out from the cold end outlet of the second vortex tube 300 to the outside for use, and the high-temperature hydrogen flows into the heat exchange chamber from the hot end outlet of the second vortex tube 300. Since the solid-state hydrogen storage device 100 absorbs heat when releasing hydrogen, the heat of the high-temperature hydrogen is heat-exchanged with the heat exchange chamber, thereby achieving the heating and pressurization of the solid-state hydrogen storage device 100, ensuring that the solid-state hydrogen storage device 100 can continuously and smoothly release hydrogen. The temperature of the high-temperature hydrogen after heat exchange drops, and finally flows out from the heat exchange chamber through the fourth valve 320 to the outside for use.

[0054] It can be seen that in this embodiment, whether absorbing or releasing hydrogen, the process does not require the use of water as a medium for heat exchange, eliminating the use of cold water and hot water, making the operation process more convenient while lowering energy consumption, achieving a more energy-saving effect.

[0055] It should be noted that after the solid-state hydrogen storage device 100 is heated and pressurized, the temperature of the hydrogen output from the gas pipe 110 is relatively high (the second temperature is higher than the first temperature). After passing through the second vortex tube 300, the hydrogen is cooled at the cold end outlet of the second vortex tube 300. At this time, the cold end outlet of the second vortex tube 300 will output hydrogen at the first temperature; and the temperature of the high-temperature hydrogen will drop to the first temperature after heat exchange in the heat exchange chamber, and finally, hydrogen at the first temperature will also be output through the cold end outlet of the second vortex tube 300.

[0056] In certain embodiments, referring to Figure 2 The first vortex tube 200 and the second vortex tube 300 each include a tube body 400, a cold end outlet 500 and a hot end outlet 600. A vortex chamber 410 is provided in the tube body 400. An air inlet 420 is provided on one side of the circumference of the vortex chamber 410. The vortex chamber 410 is used to guide the hydrogen flowing in from the air inlet 420 to form a vortex.

[0057] The cold end air outlet piece 500 is arranged at one end of the tube body 400 close to the vortex chamber 410, and the cold end air outlet piece 500 is provided with a cold end air outlet connected to the vortex chamber 410. The hot end air outlet piece 600 is arranged at one end of the tube body 400 away from the vortex chamber 410, and the hot end air outlet piece 600 is provided with a hot end air outlet connected to the vortex chamber 410.

[0058] In this embodiment, since the air inlet 420 is arranged on one side of the circumference of the vortex chamber 410, the hydrogen will be injected into the vortex chamber 410 in a tangential direction to form a free vortex (hereinafter referred to as a positive vortex), and the positive vortex rotates at a speed of up to one million revolutions per minute and flows toward the hot end outlet 600, wherein a part of the hydrogen (as the positive vortex of the outer ring) will flow out from the hot end outlet, while the other part of the hydrogen (as the reverse vortex of the inner ring) will be blocked and then form a free vortex in the inner circle of the positive vortex at the same speed. The reverse vortex (hereinafter referred to as reverse vortex) forms a counter-rotating free vortex and flows toward the cold end outlet 500. In this process, the forward vortex and the reverse vortex exchange heat. The reverse vortex as the inner ring loses energy, its kinetic energy decreases, and the temperature decreases. Finally, it forms low-temperature hydrogen and flows out from the cold end outlet. The forward vortex as the outer ring gains energy, and its kinetic energy increases. At the same time, it rubs against the inner wall of the tube body 400, and part of its kinetic energy is converted into heat energy. The temperature rises, and finally it forms high-temperature hydrogen and flows out from the hot end outlet.

[0059] Specifically, when the temperature of the hydrogen flowing in through the air inlet 420 is room temperature, the cold end outlet can output low-temperature hydrogen with a temperature of -10°C-50°C, and the hot end outlet can output high-temperature hydrogen with a temperature of 100°C-130°C.

[0060] In certain embodiments, referring to Figure 2 The inner peripheral surface of the vortex chamber 410 is provided with a spiral groove, the starting end of the groove is close to the cold end outlet 500 and connected to the air inlet 420; the groove is used to guide the hydrogen flowing in from the air inlet 420 to form a vortex.

[0061] In this embodiment, after the hydrogen is injected into the vortex chamber 410 in a tangential direction, it is forced to flow in a spiral path under the guidance of the groove, and finally forms a rotating free vortex.

[0062] In some embodiments, the cold end air outlet member 500 is fixedly connected to the pipe body 400 by a non-detachable connection method, wherein the non-detachable connection method includes welding, bonding, rivet connection, etc., but is not limited thereto.

[0063] In some embodiments, the cold end air outlet member 500 is fixedly connected to the tube body 400 by a detachable connection method, wherein the detachable connection method includes screw connection, snap connection, magnetic connection, etc., but is not limited thereto.

[0064] In certain preferred embodiments, Figure 2 The cold end air outlet piece 500 is plugged into the tube body 400 and sealed with the tube body 400 .

[0065] The cold end air outlet piece 500 is connected to the tube body 400 in a detachable plug-in manner, which is convenient for the user to take out the cold end air outlet piece 500 separately for replacement or repair. At the same time, when the cold end air outlet piece 500 or the tube body 400 is damaged, the user only needs to replace the damaged one and keep the intact one, thereby achieving the effect of cost saving.

[0066] In some embodiments, a sealing gasket is provided between the cold end outlet piece 500 and the tube body 400 to seal the cold end outlet piece 500 and the tube body 400. The sealing gasket has a simple structure, low manufacturing cost, easy replacement and maintenance, good sealing effect, and is suitable for static sealing and local sealing.

[0067] In some embodiments, a sealing ring is provided between the cold end gas outlet 500 and the tube body 400 to seal the cold end gas outlet 500 and the tube body 400. The sealing ring can withstand a certain pressure and friction, can achieve a better sealing effect, and can withstand high temperature and chemical corrosion.

[0068] In some embodiments, the hot end air outlet member 600 is fixedly connected to the tube body 400 by a non-detachable connection method, wherein the non-detachable connection method includes welding, bonding, rivet connection, etc., but is not limited thereto.

[0069] In some embodiments, the hot end air outlet member 600 is fixedly connected to the tube body 400 by a detachable connection method, wherein the detachable connection method includes screw connection, snap connection, magnetic connection, etc., but is not limited thereto.

[0070] In certain preferred embodiments, Figure 2 The hot end air outlet piece 600 is plugged into the tube body 400 and sealed with the tube body 400 .

[0071] The hot end air outlet piece 600 is connected to the tube body 400 in a detachable plug-in manner, which is convenient for the user to take out the hot end air outlet piece 600 separately for replacement or repair. At the same time, when the hot end air outlet piece 600 or the tube body 400 is damaged, the user only needs to replace the damaged one and keep the intact one, thereby achieving the effect of cost saving.

[0072] In some embodiments, a sealing gasket is provided between the hot end outlet piece 600 and the tube body 400 to seal the hot end outlet piece 600 and the tube body 400. The sealing gasket has a simple structure, low manufacturing cost, easy replacement and maintenance, good sealing effect, and is suitable for static sealing and local sealing.

[0073] In some embodiments, a sealing ring is provided between the hot end gas outlet 600 and the tube body 400 to seal the hot end gas outlet 600 and the tube body 400. The sealing ring can withstand a certain pressure and friction, can achieve a better sealing effect, and can withstand high temperature and chemical corrosion.

[0074] Please refer to Figure 3 , Figure 3 is a flow chart of the control method. The control method is used in the hydrogen storage system with vortex tube in the above embodiment. When the solid hydrogen storage device absorbs hydrogen, the following steps are performed:

[0075] A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and inputs it into the solid hydrogen storage device through the gas pipe;

[0076] When the solid-state hydrogen storage device releases hydrogen, the following steps are performed:

[0077] B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen which is input into the heat exchange chamber to increase the temperature and pressure of the solid hydrogen storage device.

[0078] In this embodiment, for example, when hydrogen is actually absorbed, room temperature hydrogen (gas source) first enters the first vortex tube through the second valve, and the low temperature hydrogen (lower than room temperature) generated by the first vortex tube enters the solid hydrogen storage device from the cold end outlet of the first vortex tube through the first valve. The solid hydrogen storage device releases heat in the process of absorbing hydrogen to exchange heat with the low temperature hydrogen to achieve temperature neutralization, thereby achieving the purpose of cooling and reducing the pressure of the solid hydrogen storage device; and the generated high temperature hydrogen (higher than room temperature) enters the heat dissipation fin tube group from the hot end outlet of the first vortex tube for cooling and reducing the pressure, and finally becomes room temperature hydrogen and is merged into the gas source and flows into the first vortex tube through the air inlet of the first vortex tube again.

[0079] For another example, when hydrogen is actually released, the solid-state hydrogen storage device releases hydrogen above room temperature and enters the second vortex tube through the third valve. The low-temperature hydrogen (actually cooled to room temperature) generated by the second vortex tube flows out from the cold end outlet of the second vortex tube through the fourth valve to the outside for use; and the high-temperature hydrogen (higher in temperature than the hydrogen released by the solid-state hydrogen storage device) generated enters the heat exchange chamber from the hot end outlet of the second vortex tube. The solid-state hydrogen storage device absorbs the heat of the high-temperature hydrogen in the process of releasing hydrogen, so as to achieve the purpose of heating and pressurizing the solid-state hydrogen storage device. The high-temperature hydrogen exchanges heat with the heat exchange chamber to achieve temperature neutralization, and finally becomes room-temperature hydrogen and is merged into the hydrogen output from the cold end outlet of the second vortex tube and flows out to the outside for use.

[0080] In some embodiments, the pressure of hydrogen flowing into the first vortex tube through the air inlet of the first vortex tube is greater than or equal to 0.2 MPa; the pressure of hydrogen flowing into the second vortex tube through the air inlet of the second vortex tube is greater than or equal to 0.2 MPa. Only when the hydrogen pressure is sufficient can the airflow obtain sufficient kinetic energy to form a free vortex, thereby generating two streams of low-temperature hydrogen and high-temperature hydrogen, thereby ensuring the normal operation of the hydrogen storage system with vortex tubes.

[0081] Please refer to Figure 4 , Figure 4 A control device in some embodiments of the present invention is used in the hydrogen storage system with vortex tube in the above embodiment. The control device is integrated in the back-end control device in the form of a computer program, and includes:

[0082] The first control module 700 is used to perform the following steps when the solid-state hydrogen storage device absorbs hydrogen:

[0083] A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and inputs it into the solid hydrogen storage device through the gas pipe;

[0084] The second control module 800 is used to perform the following steps when the solid-state hydrogen storage device releases hydrogen:

[0085] B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen which is input into the heat exchange chamber to increase the temperature and pressure of the solid hydrogen storage device.

[0086] In some embodiments, the pressure of hydrogen flowing into the first vortex tube through the air inlet of the first vortex tube in the first control module 700 is greater than or equal to 0.2 MPa; the pressure of hydrogen flowing into the second vortex tube through the air inlet of the second vortex tube in the second control module 800 is greater than or equal to 0.2 MPa.

[0087] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0088] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] Furthermore, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0090] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0091] Descriptions with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" are intended to mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0092] The above description is only an embodiment of the present invention and is not intended to limit the protection scope of the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogen storage system with a vortex tube, characterized in that: include: A solid-state hydrogen storage device (100), the solid-state hydrogen storage device (100) being provided with an air pipe (110) and a heat exchange cavity, the air pipe (110) being used to supply hydrogen gas to flow so that the solid-state hydrogen storage device (100) absorbs hydrogen gas or releases hydrogen gas; the heat exchange cavity being used to absorb the heat of hydrogen gas so that the solid-state hydrogen storage device (100) is heated and pressurized; A first vortex tube (200), wherein a cold end air outlet of the first vortex tube (200) is connected to the air pipe (110) via a first valve (210), and a hot end air outlet of the first vortex tube (200) is connected to an air inlet of the first vortex tube (200) via a heat dissipation fin tube group (220), and the air inlet of the first vortex tube (200) is further connected to a second valve (230), and the second valve (230) is used to control the inflow of hydrogen so that the solid-state hydrogen storage device (100) absorbs hydrogen; a second vortex tube (300), wherein an air inlet of the second vortex tube (300) is connected to the air pipe (110) via a third valve (310), a hot end air outlet of the second vortex tube (300) is connected to an air inlet of the heat exchange chamber, and a cold end air outlet of the second vortex tube (300) is connected to an air outlet of the heat exchange chamber, and a fourth valve (320) is further connected to the cold end air outlet of the second vortex tube (300), and the fourth valve (320) is used to control the outflow of hydrogen so that the solid-state hydrogen storage device (100) releases hydrogen; The first vortex tube (200) and the second vortex tube (300) both comprise a tube body (400), a cold end gas outlet piece (500) and a hot end gas outlet piece (600); a vortex chamber (410) is arranged in the tube body (400); an air inlet (420) is arranged on one side of the circumference of the vortex chamber (410); the vortex chamber (410) is used to guide hydrogen gas flowing in from the air inlet (420) to form a vortex; The cold end gas outlet component (500) is arranged at one end of the tube body (400) close to the vortex chamber (410), and the cold end gas outlet component (500) is provided with a cold end gas outlet connected to the vortex chamber (410); the hot end gas outlet component (600) is arranged at one end of the tube body (400) away from the vortex chamber (410), and the hot end gas outlet component (600) is provided with a hot end gas outlet connected to the vortex chamber (410); The inner peripheral surface of the vortex chamber (410) is provided with a spiral groove, the starting end of the groove is close to the cold end outlet piece (500) and connected to the air inlet (420); the groove is used to guide the hydrogen flowing in from the air inlet (420) to form a vortex.

2. The hydrogen storage system with vortex tube according to claim 1, characterized in that: The cold end air outlet piece (500) is plugged into the tube body (400) and is sealedly connected to the tube body (400).

3. The hydrogen storage system with vortex tube according to claim 2, characterized in that: A sealing ring is provided between the cold end gas outlet piece (500) and the tube body (400) so as to seal the cold end gas outlet piece (500) and the tube body (400).

4. The hydrogen storage system with vortex tube according to claim 1, characterized in that: The hot end air outlet piece (600) is plugged into the tube body (400) and is sealedly connected to the tube body (400).

5. The hydrogen storage system with vortex tube according to claim 4, characterized in that: A sealing ring is provided between the hot end gas outlet piece (600) and the tube body (400) so as to seal the hot end gas outlet piece (600) and the tube body (400).

6. A control method for a hydrogen storage system with a vortex tube according to any one of claims 1 to 5, characterized in that: When the solid-state hydrogen storage device absorbs hydrogen, the following steps are performed: A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and is input into the solid-state hydrogen storage device through the gas pipe; When the solid-state hydrogen storage device releases hydrogen, the following steps are performed: B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen, which is input into the heat exchange cavity to increase the temperature and pressure of the solid-state hydrogen storage device.

7. The control method according to claim 6, characterized in that: The pressure of hydrogen flowing into the first vortex tube through the air inlet of the first vortex tube is greater than or equal to 0.2 MPa; the pressure of hydrogen flowing into the second vortex tube through the air inlet of the second vortex tube is greater than or equal to 0.2 MPa.

8. A control device for a hydrogen storage system with a vortex tube as claimed in any one of claims 1 to 5, characterized in that: include: The first control module is used to perform the following steps when the solid-state hydrogen storage device absorbs hydrogen: A1. Keep the third valve and the fourth valve closed, and control the first valve and the second valve to be open, so that the first vortex tube forms low-temperature hydrogen and is input into the solid-state hydrogen storage device through the gas pipe; The second control module is used to perform the following steps when the solid-state hydrogen storage device releases hydrogen: B1. Keep the first valve and the second valve closed, and control the third valve and the fourth valve to be open, so that the hydrogen is output to the second vortex tube through the gas pipe to form high-temperature hydrogen, which is input into the heat exchange cavity to increase the temperature and pressure of the solid-state hydrogen storage device.

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