Hydrogen regulating system based on solid hydrogen storage

Abstract

The utility model relates to the technical field of hydrogen storage, in particular to a hydrogen adjusting system based on solid hydrogen storage, which comprises a solid hydrogen storage tank, a high-temperature heating medium storage tank, a low-temperature heating medium storage tank, a first circulation pipeline, a first valve, a second circulation pipeline, a first adjusting valve, a third circulation pipeline and a second valve, the high-temperature heat medium storage tank communicates with a heat exchange cavity of the solid hydrogen storage tank through a first circulation pipeline, and the first valve is arranged on the first circulation pipeline. The low-temperature heat medium storage tank communicates with the heat exchange cavity of the solid hydrogen storage tank through a second circulation pipeline, and the first adjusting valve is arranged on the second circulation pipeline. The low-temperature heat medium storage tank communicates with the high-temperature heat medium storage tank through a third circulation pipeline, and the second valve is arranged on the third circulation pipeline. According to the efficient hydrogen storage system, supply and demand balance of hydrogen production and hydrogen use is achieved, through the dynamic hydrogen adjusting effect of the solid hydrogen storage system, the defects that green energy hydrogen production is unstable and discontinuous can be overcome, and the continuous and stable production working condition of the hydrogen use end is met.

Description

TECHNICAL FIELD

[0001] The application relates to the hydrogen storage field, in particular to a hydrogen regulating system based on solid-state hydrogen storage. BACKGROUND

[0002] At present, hydrogen energy is widely regarded as one of the important technical paths for realizing the carbon neutralization target in the world as a clean and efficient energy carrier. Hydrogen is produced by electrolyzing water through renewable energy (such as wind energy and solar energy), and the process does not produce carbon emissions. However, the power generation of renewable energy such as solar energy and wind energy is greatly affected by weather, day and night, and seasonal changes, and is highly volatile, which leads to unstable hydrogen production of electrolytic water. The downstream industries such as refining, chemical industry, and steel industry have the characteristics of continuity and stability of hydrogen demand, which requires the supply side to provide continuous and stable hydrogen supply, that is, it requires an efficient hydrogen storage technology to realize the balance between hydrogen production and hydrogen demand. Conventional hydrogen storage methods include high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage and other methods, but the high-pressure gaseous hydrogen storage has low efficiency, the low-temperature liquid hydrogen storage has high energy consumption and large initial investment, and the economic efficiency is poor, so there is an urgent need to develop a hydrogen system that can eliminate the instability and discontinuity of green energy hydrogen production itself and meet the continuous and stable production conditions of the hydrogen end. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a hydrogen regulating system based on solid-state hydrogen storage, which solves the technical problem of the urgent need to develop a hydrogen system that can eliminate the instability and discontinuity of green energy hydrogen production itself and meet the continuous and stable production conditions of the hydrogen end in the prior art.

[0004] The application provides a hydrogen regulating system based on solid-state hydrogen storage, which comprises a solid-state hydrogen storage tank, a high-temperature heat medium storage tank, a low-temperature heat medium storage tank, a first flow pipeline, a first valve, a second flow pipeline, a first regulating valve, a third flow pipeline and a second valve; wherein the high-temperature heat medium storage tank is connected with the heat exchange cavity of the solid-state hydrogen storage tank through the first flow pipeline, and the first valve is arranged in the first flow pipeline;

[0005] The low-temperature heat medium storage tank is connected with the heat exchange cavity of the solid-state hydrogen storage tank through the second flow pipeline, and the first regulating valve is arranged in the second flow pipeline; the low-temperature heat medium storage tank is connected with the high-temperature heat medium storage tank through the third flow pipeline, and the second valve is arranged in the third flow pipeline.

[0006] In the above technical solution, further, the hydrogen regulating system based on solid-state hydrogen storage further comprises a hydrogen inlet pipeline and a hydrogen outlet pipeline; wherein the hydrogen inlet pipeline is connected with the inlet end of the hydrogen storage cavity of the hydrogen storage tank; and the hydrogen outlet pipeline is connected with the outlet end of the hydrogen storage cavity of the hydrogen storage tank.

[0007] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a first mass flow meter and a second mass flow meter; wherein the first mass flow meter is arranged on the hydrogen inlet pipeline; and the second mass flow meter is arranged on the hydrogen outlet pipeline.

[0008] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a third valve and a pressure reducing valve, both of which are arranged on the hydrogen inlet pipeline, and along the extension direction of the hydrogen inlet pipeline, the third valve is arranged closer to the inlet end of the hydrogen inlet pipeline than the pressure reducing valve, and the first mass flow meter is arranged closer to the solid-state hydrogen storage tank than the pressure reducing valve.

[0009] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a pressure sensor arranged on the hydrogen inlet pipeline, and along the extension direction of the hydrogen inlet pipeline, the pressure sensor is located between the first mass flow meter and the solid-state hydrogen storage tank.

[0010] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a second regulating valve arranged on the hydrogen outlet pipeline, and along the extension direction of the hydrogen outlet pipeline, the second regulating valve is arranged closer to the solid-state hydrogen storage tank than the second mass flow meter.

[0011] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a cooler arranged on the hydrogen outlet pipeline, and along the extension direction of the hydrogen outlet pipeline, the cooler is arranged between the second mass flow meter and the second regulating valve.

[0012] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a temperature sensor arranged on the hydrogen outlet pipeline, and along the extension direction of the hydrogen outlet pipeline, the temperature sensor is arranged between the cooler and the second mass flow meter.

[0013] In any of the above technical solutions, further, the hydrogen gas regulating system based on solid-state hydrogen storage further comprises a dust filter arranged on the hydrogen outlet pipeline, and along the extension direction of the hydrogen outlet pipeline, the dust filter is arranged between the cooler and the second mass flow meter.

[0014] In any of the above technical solutions, further, the hydrogen regulating system based on solid-state hydrogen storage further comprises a circulating pump, a connection point is formed between the third flow pipeline and the second flow pipeline, and the circulating pump is arranged on the second flow pipeline between the connection point and the low-temperature heat medium storage tank.

[0015] In any of the above technical solutions, further, the hydrogen regulating system based on solid-state hydrogen storage further comprises a heater, and the heater is arranged in the high-temperature heat medium storage tank to heat the heat exchange fluid inside.

[0016] In any of the above technical solutions, further, the hydrogen regulating system based on solid-state hydrogen storage further comprises a liquid level meter, and the low-temperature heat medium storage tank and the high-temperature heat medium storage tank are both provided with the liquid level meter to detect the liquid level of the heat exchange fluid inside.

[0017] Compared with the prior art, the hydrogen regulating system based on solid-state hydrogen storage has the following beneficial effects:

[0018] The hydrogen regulating system based on solid-state hydrogen storage provided by the application is a high-efficiency hydrogen storage system, which realizes the balance between hydrogen production and hydrogen consumption, and eliminates the instability and discontinuity of green energy hydrogen production through the dynamic hydrogen regulation of the solid-state hydrogen storage system, thereby meeting the continuous and stable production conditions of the hydrogen consumption end. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The structure diagram of the hydrogen regulating system based on solid-state hydrogen storage provided by the embodiments of the application.

[0021] Reference signs:

[0022] 1-high-temperature heat medium storage tank, 2-heater, 3-liquid level meter, 4-first valve, 5-solid-state hydrogen storage tank, 6-first regulating valve, 7-second valve, 8-circulating pump, 9-low-temperature heat medium storage tank, 10-hydrogen inlet pipeline, 11-third valve, 12-pressure reducing valve, 13-first mass flowmeter, 14-pressure sensor, 15-second regulating valve, 16-cooler, 17-temperature sensor, 18-dust filter, 19-second mass flowmeter, 20-hydrogen outlet pipeline, 21-first flow pipeline, 22-second flow pipeline, 23-third flow pipeline. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0024] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application.

[0025] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The following will be described with reference to the drawings Figure 1 A hydrogen conditioning system based on solid-state hydrogen storage is described according to some embodiments of the present application.

[0029] Referring to Figure 1 As shown in the drawings, the embodiments of the present application provide a hydrogen conditioning system based on solid-state hydrogen storage, comprising: a solid-state hydrogen storage tank 5, a high-temperature heat medium storage tank 1, a low-temperature heat medium storage tank 9, a first flow pipeline 21, a first valve 4, a second flow pipeline 22, a first conditioning valve 6, a third flow pipeline 23 and a second valve 7; wherein the high-temperature heat medium storage tank 1 is connected in communication with the heat exchange cavity of the solid-state hydrogen storage tank 5 through the first flow pipeline 21, and the first valve 4 is arranged in the first flow pipeline 21;

[0030] The low-temperature heat medium storage tank 9 is connected with the heat exchange cavity of the solid-state hydrogen storage tank 5 through a second flow pipe 22, and the first regulating valve 6 is arranged on the second flow pipe 22; the low-temperature heat medium storage tank 9 is connected with the high-temperature heat medium storage tank 1 through a third flow pipe 23, and the second valve 7 is arranged on the third flow pipe 23.

[0031] According to the above-described structure, the working process of the hydrogen regulating system based on the solid-state hydrogen storage provided by the application is as follows:

[0032] When hydrogen is filled, hydrogen gas from, for example, water electrolysis of renewable energy is introduced into the solid-state hydrogen storage tank 5 to react with the hydrogen storage alloy in the hydrogen storage cavity of the solid-state hydrogen storage tank 5 to generate a metal hydride; when hydrogen is discharged, the metal hydride in the hydrogen storage cavity of the solid-state hydrogen storage tank 5 releases hydrogen gas, and the hydrogen filling and discharging control of the solid-state hydrogen storage system is carried out at the same temperature, that is, the solid-state hydrogen storage material is always kept at a constant temperature, and the hydrogen filling or discharging state is automatically switched by the change of hydrogen pressure. For example, taking a magnesium-based hydrogen storage alloy as an example, the working temperature is controlled at a certain constant temperature between 300-360℃, when the hydrogen production amount is relatively high, the hydrogen production flow is greater than the hydrogen discharging flow, the hydrogen filling end pressure rises and is higher than the equilibrium pressure of the magnesium alloy material at this temperature, and the solid-state hydrogen storage system shows a hydrogen filling state; conversely, when the hydrogen production amount is relatively low, the hydrogen production flow is less than the hydrogen discharging flow, the hydrogen filling end pressure decreases, and when the hydrogen pressure is lower than the equilibrium pressure of the magnesium alloy material at this working temperature, the solid-state hydrogen storage system shows a hydrogen discharging state; the working temperature of the low-temperature hydrogen storage alloy is controlled as follows: the working temperature range of rare earth, titanium, zirconium and vanadium hydrogen storage alloys is 15-50℃.

[0033] The hydrogen demand of the hydrogen end is basically constant, when the hydrogen production amount is greater than the hydrogen demand, the pressure in the solid-state hydrogen storage system rises, the hydrogen storage material is in a hydrogen filling state, the heat conducting medium of the low-temperature heat medium storage tank 9 enters the high-temperature heat medium storage tank 1 after passing through the solid-state hydrogen storage tank 5, and at the same time, the heat of the hydrogen filling reaction is taken away, so that the hydrogen storage alloy is always maintained at a constant working temperature. When the hydrogen production amount is less than the hydrogen demand, the heat conducting medium of the high-temperature heat medium storage tank 1 enters the low-temperature heat medium storage tank 9 after passing through the solid-state hydrogen storage tank 5, and provides reaction heat for the hydrogen discharging of the solid-state hydrogen storage alloy, so that the hydrogen storage alloy is always maintained at a constant working temperature.

[0034] It can be seen that, through the dynamic hydrogen regulation of the solid-state hydrogen storage system, the instability and discontinuity of green energy hydrogen production can be eliminated, and the continuous and stable production conditions of the hydrogen end can be met, that is, the application provides an efficient hydrogen storage system to realize the supply and demand balance of hydrogen production and hydrogen consumption.

[0035] In this embodiment, preferably, as Figure 1As shown, the hydrogen regulating system based on solid-state hydrogen storage further comprises a hydrogen inlet pipeline 10 and a hydrogen outlet pipeline 20; the hydrogen inlet pipeline 10 is in communication with the inlet end of the hydrogen storage cavity of the hydrogen storage tank; the hydrogen outlet pipeline 20 is in communication with the outlet end of the hydrogen storage cavity of the hydrogen storage tank.

[0036] According to the above-described structure, when hydrogen is filled, hydrogen gas from water electrolysis of renewable energy, for example, can enter the solid-state hydrogen storage tank 5 through the hydrogen inlet pipeline 10; when hydrogen is discharged, hydrogen gas discharged by the metal hydride can be discharged from the solid-state hydrogen storage tank 5 through the hydrogen outlet pipeline 20 and transported to the use end, etc.

[0037] In this embodiment, preferably, as shown, Figure 1 As shown, the hydrogen regulating system based on solid-state hydrogen storage further comprises a first mass flow meter 13 and a second mass flow meter 19; the first mass flow meter 13 is arranged on the hydrogen inlet pipeline 10; the second mass flow meter 19 is arranged on the hydrogen outlet pipeline 20.

[0038] According to the above-described structure, the hydrogen demand at the hydrogen end is basically constant; when the hydrogen production amount is greater than the hydrogen demand amount, the pressure in the solid-state hydrogen storage system rises, the hydrogen storage material is in a hydrogen filling state, and the hydrogen filling and discharging control system controls the opening degree of the first regulating valve 6 to adjust the flow of the heat conducting medium to a proper value, so that the heat conducting medium of the low-temperature heat medium storage tank 9 enters the high-temperature heat medium storage tank 1 after passing through the solid-state hydrogen storage tank 5, while taking away the hydrogen filling reaction heat, so that the hydrogen storage alloy is always maintained at a constant working temperature.

[0039] When the hydrogen production amount is less than the hydrogen demand amount, the hydrogen filling and discharging control system calculates the difference between the first mass flow meter 13 and the second mass flow meter 19; when the difference is negative, the circulating pump 8 is reversely operated, the opening degree of the first regulating valve 6 is adjusted to adjust the flow of the heat conducting medium to a proper value, so that the heat conducting medium of the high-temperature heat medium storage tank 1 enters the low-temperature heat medium storage tank 9 after passing through the solid-state hydrogen storage tank 5, to provide reaction heat for the hydrogen discharge of the solid-state hydrogen storage alloy, so that the hydrogen storage alloy is always maintained at a constant working temperature.

[0040] In this embodiment, preferably, as shown, Figure 1 As shown, the hydrogen regulating system based on solid-state hydrogen storage further comprises a third valve 11 and a pressure reducing valve 12; the third valve 11 and the pressure reducing valve 12 are both arranged on the hydrogen inlet pipeline 10, and along the extension direction of the hydrogen inlet pipeline 10, the third valve 11 is arranged closer to the inlet end of the hydrogen inlet pipeline 10 than the pressure reducing valve 12, and the first mass flow meter 13 is arranged closer to the solid-state hydrogen storage tank 5 than the pressure reducing valve 12.

[0041] According to the above-described structure, the third valve 11 mainly controls whether the hydrogen enters the hydrogen storage tank or not, and has stronger controllability; the pressure reducing valve 12 is used for pressure regulating of the entering hydrogen, so that the hydrogen meets the hydrogen filling working pressure of the hydrogen storage alloy.

[0042] In this embodiment, preferably, as shown in Figure 1 The hydrogen regulating system based on solid-state hydrogen storage further comprises a pressure sensor 14, which is arranged on the hydrogen inlet pipeline 10 and located between the first mass flow meter 13 and the solid-state hydrogen storage tank 5 along the extension direction of the hydrogen inlet pipeline 10.

[0043] According to the above-described structure, the pressure sensor 14 can record the hydrogen pressure value, ensuring the reliability and safety of the system.

[0044] In this embodiment, preferably, as shown in Figure 1 The hydrogen regulating system based on solid-state hydrogen storage further comprises a second regulating valve 15, which is arranged on the hydrogen outlet pipeline 20 and located closer to the solid-state hydrogen storage tank 5 than the second mass flow meter 19 along the extension direction of the hydrogen outlet pipeline 20.

[0045] According to the above-described structure, during hydrogen release, the second regulating valve 15 can adjust the hydrogen released from the solid-state hydrogen storage tank 5 to the required flow rate of the hydrogen-using end, meeting the actual use requirements.

[0046] In this embodiment, preferably, as shown in Figure 1 The hydrogen regulating system based on solid-state hydrogen storage further comprises a cooler 16, which is arranged on the hydrogen outlet pipeline 20 and located between the second mass flow meter 19 and the second regulating valve 15 along the extension direction of the hydrogen outlet pipeline 20.

[0047] According to the above-described structure, if a high-temperature hydrogen storage alloy (such as a magnesium-based hydrogen storage alloy) is used, the cooler 16 is needed to cool the hydrogen to an appropriate temperature, generally below 60°C, of course, not limited thereto.

[0048] In this embodiment, preferably, as shown in Figure 1 The hydrogen regulating system based on solid-state hydrogen storage further comprises a temperature sensor 17, which is arranged on the hydrogen outlet pipeline 20 and located between the cooler 16 and the second mass flow meter 19 along the extension direction of the hydrogen outlet pipeline 20.

[0049] According to the above-described structure, the temperature sensor 17 can monitor the hydrogen release temperature in real time and issue an alarm once the temperature exceeds the set range.

[0050] In this embodiment, preferably, as shown in Figure 1As shown, the hydrogen conditioning system based on solid-state hydrogen storage further comprises a dust filter 18, which is arranged on the hydrogen outlet pipeline 20 and between the cooler 16 and the second mass flow meter 19 along the extension direction of the hydrogen outlet pipeline 20.

[0051] According to the above structure, the dust filter 18 can remove the trace dust possibly existing in the hydrogen, thereby ensuring the purity of the hydrogen.

[0052] In this embodiment, preferably, as shown in the figure, the hydrogen conditioning system based on solid-state hydrogen storage further comprises a circulating pump 8, and a connecting point is formed between the third flow pipeline 23 and the second flow pipeline 22, and the circulating pump 8 is arranged on the second flow pipeline 22 between the connecting point and the low-temperature heat medium storage tank 9. Figure 1

[0053] According to the above structure, the circulating pump 8 is used to provide the power for the flow of the heat exchange liquid. Specifically, when the hydrogen production amount is less than the hydrogen consumption amount, the hydrogen charging and discharging control system calculates the difference between the first mass flow meter 13 and the second mass flow meter 19, and when the difference is negative, the circulating pump 8 is reversely operated, the opening degree of the first regulating valve 6 is adjusted to adjust the flow of the heat conducting medium to a proper value, and the heat conducting medium in the high-temperature heat medium storage tank 1 enters the low-temperature heat medium storage tank 9 after passing through the solid-state hydrogen storage tank 5, thereby providing the reaction heat for the hydrogen discharge of the hydrogen storage alloy and maintaining the hydrogen storage alloy at a constant working temperature.

[0054] In addition, when the liquid level in the high-temperature storage tank is too low, the heat medium in the low-temperature heat medium storage tank 9 enters the high-temperature heat medium storage tank 1 after passing through the circulating pump 8 and the second valve 7, and the heater 2 is turned on at the same time, so that the high-temperature heat medium storage tank 1 is maintained in a proper temperature range.

[0055] In this embodiment, preferably, as shown in the figure, the hydrogen conditioning system based on solid-state hydrogen storage further comprises a heater 2, and the heater 2 is arranged in the high-temperature heat medium storage tank 1 and used to heat the heat exchange fluid, i.e. the heat medium, in the high-temperature heat medium storage tank 1. Figure 1 According to the above structure, the heater 2 in the high-temperature heat medium storage tank 1 is mainly used to heat the heat medium to the working temperature when the equipment is started and to compensate for the heat loss in the system during operation.

[0056] In this embodiment, preferably, as shown in the figure, the hydrogen conditioning system based on solid-state hydrogen storage further comprises a liquid level meter 3, and the low-temperature heat medium storage tank 9 and the high-temperature heat medium storage tank 1 are both provided with the liquid level meter 3 and used to detect the liquid level of the heat exchange fluid, i.e. the heat medium, in the low-temperature heat medium storage tank 9 and the high-temperature heat medium storage tank 1.

[0057] Figure 1

[0058] ​​​According to the above-described structure, the liquid level meter 3 located on the high and low temperature heat medium storage tank 9 can monitor the heat medium liquid level in the tank in real time, and when the liquid level in the high temperature storage tank is too low, the heat medium in the low temperature heat medium storage tank 9 enters the high temperature heat medium storage tank 1, and at the same time the heater 2 is turned on, so that the high temperature heat medium storage tank 1 is maintained within a suitable temperature range.

[0059] In summary, the detailed working process of the hydrogen regulating system based on solid-state hydrogen storage provided in the application is as follows:

[0060] When hydrogen is charged, for example, hydrogen gas obtained by electrolysis of water from renewable energy sources enters the solid-state hydrogen storage tank 5 after passing through the hydrogen inlet and the third valve 11, and is regulated by the pressure reducing valve 12 to the hydrogen charging working pressure of the hydrogen storage alloy, and then reacts with the hydrogen storage alloy in the hydrogen storage cavity to generate metal hydride. The first mass flow meter 13 can measure the hydrogen flow in real time, and the pressure sensor 14 can record the hydrogen pressure value.

[0061] When hydrogen is discharged, the hydrogen discharged from the solid-state hydrogen storage tank 5 is adjusted to the required flow rate at the hydrogen use end after passing through the second regulating valve 15, and the second mass flow meter 19 can measure the hydrogen discharge flow rate in real time. The filter removes the trace amount of dust that may exist in the hydrogen gas. If the high-temperature hydrogen storage alloy (for example, magnesium-based hydrogen storage alloy) is used in the application, a cooler 16 is also needed to cool the hydrogen gas to a suitable temperature, generally below 60℃. The temperature sensor 17 can monitor the hydrogen discharge temperature in real time, and an alarm will be sent once the temperature exceeds the set range.

[0062] The hydrogen charging and discharging control of the solid-state hydrogen storage system is carried out at the same temperature, that is, the solid-state hydrogen storage material is always maintained at a constant temperature, and the hydrogen charging or discharging state is automatically switched by the change of hydrogen pressure. For example, taking magnesium-based hydrogen storage alloy as an example, the working temperature is controlled at a certain constant temperature between 300-360℃. When the hydrogen production amount is high, the hydrogen production flow rate is greater than the hydrogen discharge flow rate, the hydrogen charging pressure rises and is higher than the equilibrium pressure of the magnesium alloy material at this temperature, and the solid-state hydrogen storage system shows the hydrogen charging state. Conversely, when the hydrogen production amount is low, the hydrogen production flow rate is less than the hydrogen discharge flow rate, the hydrogen charging pressure decreases, and when the hydrogen pressure is lower than the equilibrium pressure of the magnesium alloy material at this working temperature, the solid-state hydrogen storage system shows the hydrogen discharge state. The working temperature of the low-temperature hydrogen storage alloy is controlled as follows: the working temperature range of rare earth, titanium, zirconium and vanadium hydrogen storage alloys is 15-50℃.

[0063] The hydrogen demand of hydrogen end is basically constant, when the hydrogen production is greater than the hydrogen demand, the pressure in the solid hydrogen storage system is increased, the hydrogen storage material is in the hydrogen charging state, the charging and discharging control system controls the opening degree of the first regulating valve 6 to adjust the flow of the heat conducting medium to a proper value through the calculation of the difference between the first mass flow meter 13 and the second mass flow meter 19, so that the heat conducting medium in the low temperature heat medium storage tank 9 enters the high temperature heat medium storage tank 1 after passing through the solid hydrogen storage tank 5, and the heat charging reaction heat is taken away, so that the hydrogen storage alloy is always maintained at a constant working temperature.

[0064] When the hydrogen production is less than the hydrogen demand, the charging and discharging control system controls the opening degree of the first regulating valve 6 to adjust the flow of the heat conducting medium to a proper value through the calculation of the difference between the first mass flow meter 13 and the second mass flow meter 19, when the difference is negative, the circulating pump 8 is reversely operated, so that the heat conducting medium in the high temperature heat medium storage tank 1 enters the low temperature heat medium storage tank 9 after passing through the solid hydrogen storage tank 5, and the heat charging reaction heat is taken away, so that the hydrogen storage alloy is always maintained at a constant working temperature.

[0065] The heater 2 in the high temperature heat medium storage tank 1 is mainly used for heating the heat medium to the working temperature during the start of the equipment, and compensating the heat loss during the operation of the system. The liquid level meter 3 located on the high and low temperature heat medium storage tanks 9 can monitor the heat medium liquid level in the tank in real time. When the liquid level in the high temperature storage tank is too low, the heat medium in the low temperature heat medium storage tank 9 enters the high temperature heat medium storage tank 1 after passing through the circulating pump 8 and the second valve 7, and the heater 2 is turned on, so that the high temperature heat medium storage tank 1 is maintained in a suitable temperature range.

[0066] It can be seen that the application provides an efficient hydrogen storage system to realize the supply and demand balance of hydrogen production and hydrogen demand, and through the dynamic hydrogen adjustment of the solid hydrogen storage system, the instability and discontinuity of green energy hydrogen production can be eliminated, and the continuous and stable production conditions of the hydrogen demand end can be met.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A hydrogen conditioning system based on solid state hydrogen storage, characterized in that, The hydrogen storage system comprises a solid-state hydrogen storage tank, a high-temperature heat medium storage tank, a low-temperature heat medium storage tank, a first flow pipeline, a first valve, a second flow pipeline, a first regulating valve, a third flow pipeline and a second valve. The low-temperature heat medium storage tank is connected with the heat exchange cavity of the solid-state hydrogen storage tank through the second flow pipeline, and the first regulating valve is arranged on the second flow pipeline. The hydrogen storage system further comprises a hydrogen inlet pipeline and a hydrogen outlet pipeline.

2. The solid-state hydrogen storage based hydrogen conditioning system of claim 1, wherein, The hydrogen storage system further comprises a first mass flow meter and a second mass flow meter.

3. The solid-state hydrogen storage based hydrogen conditioning system of claim 2, wherein, The hydrogen storage system further comprises a third valve and a pressure reducing valve.

4. The solid-state hydrogen storage based hydrogen conditioning system of claim 3, wherein, The hydrogen storage system further comprises a pressure sensor.

5. The solid-state hydrogen storage based hydrogen conditioning system of claim 4, wherein, The hydrogen storage system further comprises a second regulating valve.

6. The solid-state hydrogen storage based hydrogen conditioning system of claim 3, wherein, The hydrogen storage system further comprises a cooler.

7. The solid-state hydrogen storage based hydrogen conditioning system of claim 6, wherein, The hydrogen storage system further comprises a temperature sensor.

8. The solid-state hydrogen storage based hydrogen conditioning system of claim 7, wherein, The hydrogen storage system further comprises a dust filter.

9. The solid-state hydrogen storage based hydrogen conditioning system of claim 7, wherein, ​ 10. The solid-state hydrogen storage based hydrogen conditioning system of any one of claims 1 to 9, wherein, The hydrogen conditioning system based on solid-state hydrogen storage further comprises a circulating pump, a connecting point is formed between the third flow pipeline and the second flow pipeline, and the circulating pump is arranged on the second flow pipeline between the connecting point and the low-temperature heat medium storage tank; and / or The hydrogen conditioning system based on solid-state hydrogen storage further comprises a heater, and the heater is arranged in the high-temperature heat medium storage tank and used for heating the heat exchange fluid inside the high-temperature heat medium storage tank; and / or The hydrogen conditioning system based on solid-state hydrogen storage further comprises a liquid level meter, and the low-temperature heat medium storage tank and the high-temperature heat medium storage tank are both provided with the liquid level meter and used for detecting the liquid level of the heat exchange fluid inside the low-temperature heat medium storage tank and the high-temperature heat medium storage tank.

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