CN213707740U - Hydrogen supply system - Google Patents
Hydrogen supply system Download PDFInfo
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- CN213707740U CN213707740U CN202022637884.5U CN202022637884U CN213707740U CN 213707740 U CN213707740 U CN 213707740U CN 202022637884 U CN202022637884 U CN 202022637884U CN 213707740 U CN213707740 U CN 213707740U
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Abstract
The application relates to magnesium-based hydrogen storage material stores hydrogen technical field, especially relates to a hydrogen supply system, includes: the hydrogen storage device comprises a first storage device, a second storage device, an electric heating device, a heat exchange device and a hydrogen releasing device; the first storage device, the electric heating device, the second storage device and the heat exchange device are communicated in sequence to form a first communication loop; the hydrogen releasing device is internally provided with a flow passage and a hydrogen storage object which are separated from each other, the flow passage of the heat exchange device and the flow passage of the hydrogen releasing device are communicated with each other to form a second communication loop, and the hydrogen storage object can be heated by a heat exchange medium flowing through the flow passage and then releases hydrogen. The application provides a hydrogen supply system utilizes the principle of fused salt energy storage to store the low price valley electricity energy at night in the fused salt, releases the heating hydrogen storage thing and releases hydrogen daytime to supply with and wait to fill hydrogen equipment, can show the running cost that reduces magnesium alloy hydrogen storage hydrogen supply system.
Description
Technical Field
The application relates to the technical field of hydrogen storage and discharge of magnesium-based hydrogen storage materials, in particular to a hydrogen supply system.
Background
At present, hydrogen energy is a clean and pollution-free new energy source. However, hydrogen has low volume density and low liquefaction temperature in normal state, and is difficult to store and transport, and these factors limit the popularization and application of hydrogen energy. The magnesium-based hydrogen storage material is a solid hydrogen storage material with great development prospect, has high hydrogen storage capacity, wide sources, no toxicity, no harm, low cost and good safety, and is suitable for large-scale storage and transportation of hydrogen.
The principle of magnesium alloy hydrogen storage is as follows: under the conditions of certain temperature and hydrogen pressure, the magnesium alloy material can perform reversible hydrogen absorption-dehydrogenation reaction with hydrogen, thereby realizing the storage and release of the hydrogen. However, this reaction has a certain thermal effect, and magnesium alloys emit heat when absorbing hydrogen, and need to absorb heat when releasing hydrogen. Therefore, in hydrogen sites such as hydrogen stations using magnesium-based solid-state hydrogen storage as a hydrogen source, backup power systems, plants requiring hydrogen gas, etc., it is necessary to provide sufficient heat to allow the magnesium alloy hydrogen storage material to release hydrogen gas. The most convenient heat source is that the electric heater is adopted to heat the organic heat conduction oil, then the high-temperature heat conduction oil exchanges heat with the magnesium alloy hydrogen storage material to release hydrogen, and the electricity cost for releasing the hydrogen is higher because the hydrogen is needed in the daytime and the peak electricity price is higher in the daytime.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a hydrogen supply system, solved to a certain extent exist among the prior art because the hydrogen demand is many daytime, and the peak electricity price is higher daytime, consequently releases the higher technical problem of charges of electricity cost of hydrogen.
The present application provides a hydrogen supply system comprising: the hydrogen storage device comprises a first storage device, a second storage device, an electric heating device, a heat exchange device and a hydrogen releasing device;
the first storage device, the electric heating device, the second storage device and the heat exchange device form a first communication loop, and a second communication loop is formed between the heat exchange device and the hydrogen releasing device;
the hydrogen releasing device is internally provided with a circulation channel and a hydrogen storage object which are separated from each other, and the hydrogen storage object can be heated by a heat exchange medium flowing through the circulation channel and then releases hydrogen.
In the above technical solution, further, the first storage device includes a first tank and a first heat-insulating layer, and the first heat-insulating layer is wrapped outside the first tank.
In any of the above technical solutions, further, the second storage device includes a second tank and a second insulating layer, and the second insulating layer is wrapped outside the second tank.
In any of the above technical solutions, further, the pipelines through which the first storage device, the electric heating device, the second storage device, the heat exchanging device, and the first storage device are communicated with each other are all formed by heat-insulating pipes.
In any of the above technical solutions, further, the first storage device is communicated with the electric heating device through a first pump body;
the second storage device is communicated with the heat exchange device through a second pump body.
In any of the above technical solutions, further, the heat exchange device is formed with a heat storage substance inlet end, a heat storage substance outlet end, a heat exchange substance outlet end, and a heat exchange substance inlet end; wherein the heat storage material inlet end is in communication with the second storage device and the heat storage material outlet end is in communication with the first storage device;
the heat exchange material outlet end is communicated with the inlet end of the flow channel, and the heat exchange material inlet end is communicated with the outlet end of the flow channel.
In any of the above technical solutions, further, a third pump body is disposed on a path where the heat exchange material inlet end of the heat exchange device is communicated with the outlet end of the hydrogen releasing device.
In any of the above technical solutions, further, the hydrogen supply system further includes a carrying tank, and the carrying tank is communicated with the heat exchanging device and is used for carrying heat exchanging substances overflowing after expansion.
In any of the above technical solutions, further, the hydrogen supply system further includes an oil-gas separation device, and the oil-gas separation device is disposed on a path where the bearing groove is communicated with the heat exchange device.
In any of the above technical solutions, further, the heat exchanging device is a heat transfer oil heat exchanger.
In any of the above technical solutions, further, the hydrogen releasing device includes a housing and a plurality of delivery pipes disposed in the housing, the housing is of a double-layer structure, and a magnesium alloy hydrogen storage material is disposed between the double-layer structure.
Compared with the prior art, the beneficial effect of this application is:
the application provides a hydrogen supply system utilizes the principle of fused salt energy storage to store the low price valley electricity energy at night in the fused salt, releases the heating hydrogen storage thing and releases hydrogen daytime to supply with and wait to fill hydrogen equipment, can show the running cost that reduces magnesium alloy hydrogen storage hydrogen supply system.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a hydrogen supply system according to an embodiment of the present application.
Reference numerals:
1-an electric heating device, 2-a first storage device, 3-a second storage device, 4-a first pump body, 5-a second pump body, 6-a heat exchange device, 7-a bearing groove, 8-an oil-gas separation device, 9-a third pump body, 10-a hydrogen releasing device and 11-a hydrogen outlet.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A hydrogen supply system according to some embodiments of the present application is described below with reference to fig. 1.
Referring to fig. 1, an embodiment of the present application provides a hydrogen supply system including: the hydrogen storage device comprises a first storage device 2, a second storage device 3, an electric heating device 1, a heat exchange device 6 and a hydrogen releasing device 10;
the first storage device 2, the electric heating device 1, the second storage device 3 and the heat exchange device 6 are communicated in sequence to form a first communication loop.
The hydrogen releasing device 10 is provided with a flow channel and a hydrogen storage material which are separated from each other, the flow channel of the heat exchanging device 6 and the flow channel of the hydrogen releasing device 10 are communicated with each other to form a second communication loop, and the hydrogen storage material can be heated by a heat exchange medium flowing through the flow channel and then releases hydrogen (regarding the heat exchange medium, heat conduction oil can be selected here, the heat conduction oil will be taken as an example and will be described below).
The heat exchange device 6 is formed with a heat storage substance inlet end, a heat storage substance outlet end, a heat exchange substance outlet end, and a heat exchange substance inlet end, the heat storage substance inlet end is communicated with the second storage device 3, the heat storage substance outlet end is communicated with the first storage device 2, the heat exchange substance outlet end is communicated with the inlet end of the flow channel, and the heat exchange substance inlet end is communicated with the outlet end of the flow channel.
The hydrogen supply system has the working process as follows:
at night, the electricity price of the valley electricity is lower, at the moment, the low-temperature molten salt in the first storage device 2 is conveyed to the electric heating device 1 to be heated to the preset temperature and then conveyed to the second storage device 3, and the electric energy is stored in the high-temperature molten salt in the second storage device 3 in a heat mode.
When hydrogen is needed in daytime, high-temperature molten salt in the second storage device 3 is conveyed to the heat exchange device 6 to exchange heat with heat conduction oil, when the temperature of the molten salt is reduced to be lower than the use temperature, the molten salt flows back to the first storage device 2, the heat conduction oil is heated to a preset temperature and then enters the hydrogen release device 10 filled with hydrogen storage materials to heat the hydrogen storage materials to a specified temperature, and then the hydrogen begins to be released, the hydrogen is discharged from a hydrogen outlet 11 of the hydrogen release device 10 (specifically, the heat conduction oil is heated to the preset temperature and then enters a plurality of conveying pipes of the hydrogen release device 10 to circulate, the hydrogen storage materials are heated, the hydrogen is released after the hydrogen storage materials absorb heat), hydrogen filling operation is carried out on equipment to be filled with hydrogen, and the heat conduction. The release speed of the hydrogen can be controlled by adjusting the temperature and the flow rate of the heat transfer oil.
The application provides a hydrogen supply system utilizes the principle of fused salt energy storage to store the low price valley electricity energy at night in the fused salt, releases the heating hydrogen storage thing and releases hydrogen daytime to supply with and wait to fill hydrogen equipment, can show the running cost that reduces magnesium alloy hydrogen storage hydrogen supply system.
Wherein, optionally, the electric heating device 1 is a molten salt electric heater.
In this embodiment, preferably, the first storage device 2 includes a first tank body and a first heat preservation layer, and the first heat preservation layer wraps the outside of the first tank body to play a role in heat preservation, so as to avoid heat loss of the low-temperature molten salt stored in the first tank body, and improve the energy storage effect.
In this embodiment, preferably, the second storage device 3 includes a second tank body and a second insulating layer, and the second insulating layer wraps the outside of the second tank body to play a role in heat preservation, so as to prevent heat loss of the straw-heated molten salt stored in the second tank body and improve the energy storage effect.
In this embodiment, preferably, the pipelines of the first storage device 2, the electric heating device 1, the second storage device 3, the heat exchanging device 6 and the first storage device 2 which are sequentially communicated are all formed by heat-insulating pipes, so that a heat-insulating effect is achieved, heat loss in the process of molten salt circulation is avoided, and an energy storage effect is improved.
In this embodiment, preferably, as shown in fig. 1, the first storage device 2 is communicated with the electric heating device 1 through the first pump body 4, and the first pump body 4 can pump the low-temperature molten salt in the first storage device 2 into the electric heating device 1, so as to accelerate circulation and improve hydrogen production efficiency.
The second storage device 3 is communicated with the heat exchange device 6 through the second pump body 5, and the second pump body 5 can pump the high-temperature molten salt in the second storage device 3 into the heat exchange device 6, so that circulation is accelerated, and hydrogen production efficiency is improved.
In this embodiment, preferably, as shown in fig. 1, a third pump body 9 is provided on a path where the heat exchange substance inlet end of the heat exchange device 6 communicates with the outlet end of the hydrogen releasing device 10.
According to the structure described above, the heat conducting oil enters the hydrogen releasing device 10, heats the hydrogen storage species in the hydrogen releasing device 10, and is pumped back to the heat exchanging device 6 through the third pump body 9, so that the circulation is accelerated, and the hydrogen production efficiency is improved.
In this embodiment, preferably, as shown in fig. 1, the hydrogen supply system further comprises a carrier tank 7, and the carrier tank 7 is communicated with the heat exchange device 6 and is used for carrying the heat exchange material overflowing after expansion.
The hydrogen supply system also comprises an oil-gas separation device 8, and the oil-gas separation device 8 is arranged on a path where the bearing groove 7 is communicated with the heat exchange device 6.
According to the structure, the heat conduction oil in the heat exchange device 6 is heated by the high-temperature molten salt along with certain volume expansion, the heat conduction oil of the expansion part can enter the expansion tank for storage through the liquid heat conduction oil separated by the oil-gas separator, the overflow of the heat conduction oil is avoided, and the heat conduction oil is safer and more reliable.
In summary, the working process of the hydrogen supply system is as follows:
at night, the valley electricity price is lower, at the moment, the first pump body 4 is utilized to pump the low-temperature molten salt in the first storage device 2 into the electric heating device 1 to heat to the preset temperature and then convey the low-temperature molten salt to the second storage device 3, and therefore the electric energy is stored in the high-temperature molten salt in the second storage device 3 in a heat manner.
When hydrogen is needed in daytime, the second pump body 5 is utilized to pump the high-temperature molten salt in the second storage device 3 to the heat exchange device 6 for heat exchange with the heat conduction oil, when the temperature of the molten salt is reduced to be lower than the use temperature, the molten salt flows back to the first storage device 2, the heat conduction oil is heated to the preset temperature and then enters the hydrogen release device 10 filled with the hydrogen storage object to heat the hydrogen storage object to the specified temperature and start to discharge hydrogen, the hydrogen is discharged from the hydrogen outlet 11 of the hydrogen release device 10 (specifically, the heat conduction oil is heated to the preset temperature and then enters the multiple conveying pipes of the hydrogen release device 10 for circulation, and the hydrogen storage object is heated), hydrogen charging operation is carried out on equipment to be charged with hydrogen, and meanwhile, the heat conduction oil after heat exchange is pumped back to the heat exchange device 6. The release speed of the hydrogen can be controlled by adjusting the temperature and the flow rate of the heat transfer oil.
Therefore, the hydrogen supply system stores the low-price valley electricity energy at night in the molten salt by utilizing the principle of molten salt energy storage, releases the heating hydrogen storage object and releases hydrogen in the daytime so as to supply the hydrogen to the equipment to be charged, and can obviously reduce the operation cost of the magnesium alloy hydrogen storage and supply system.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A hydrogen supply system, comprising: the hydrogen storage device comprises a first storage device, a second storage device, an electric heating device, a heat exchange device and a hydrogen releasing device;
the first storage device, the electric heating device, the second storage device and the heat exchange device are communicated in sequence to form a first communication loop;
the hydrogen releasing device is internally provided with a flow passage and a hydrogen storage object which are separated from each other, the heat exchange device and the flow passage of the hydrogen releasing device are communicated with each other to form a second communication loop, and the hydrogen storage object can be heated by a heat exchange medium flowing through the flow passage and then releases hydrogen.
2. The hydrogen supply system of claim 1, wherein the first storage device comprises a first tank and a first thermal insulation layer, the first thermal insulation layer being wrapped around an exterior of the first tank.
3. The hydrogen supply system of claim 1, wherein the second storage device comprises a second tank and a second layer of insulation, the second layer of insulation wrapping around an exterior of the second tank.
4. The hydrogen supply system according to claim 1, wherein the pipelines through which the first storage device, the electric heating device, the second storage device, the heat exchanging device, and the first storage device communicate with each other are formed by heat-insulating pipes.
5. The hydrogen supply system according to claim 1, wherein the first storage device is in communication with the electric heating device via a first pump body;
the second storage device is communicated with the heat exchange device through a second pump body.
6. The hydrogen supply system according to claim 1, wherein the heat exchange device is formed with a heat storage substance inlet port, a heat storage substance outlet port, a heat exchange substance outlet port, and a heat exchange substance inlet port; wherein the heat storage material inlet end is in communication with the second storage device and the heat storage material outlet end is in communication with the first storage device;
the heat exchange material outlet end is communicated with the inlet end of the flow channel, and the heat exchange material inlet end is communicated with the outlet end of the flow channel.
7. The hydrogen supply system according to claim 6, wherein a third pump body is provided on a path where the heat exchange material inlet end of the heat exchange device communicates with the outlet end of the hydrogen releasing device.
8. The hydrogen supply system of claim 1 further comprising a carrier tank in communication with the heat exchange device for carrying heat exchange material that overflows after expansion.
9. The hydrogen supply system of claim 8, further comprising an oil-gas separation device disposed on a path of the carrying tank communicating with the heat exchanging device.
10. The hydrogen supply system according to any one of claims 1 to 9, wherein the heat exchanging device is a heat transfer oil heat exchanger; and/or
The hydrogen releasing device comprises a shell and a plurality of conveying pipes arranged in the shell, the shell is of a double-layer structure, magnesium alloy hydrogen storage materials are arranged between the double-layer structure, and the conveying pipes are formed with circulation channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022637884.5U CN213707740U (en) | 2020-11-16 | 2020-11-16 | Hydrogen supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022637884.5U CN213707740U (en) | 2020-11-16 | 2020-11-16 | Hydrogen supply system |
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| CN213707740U true CN213707740U (en) | 2021-07-16 |
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| CN202022637884.5U Active CN213707740U (en) | 2020-11-16 | 2020-11-16 | Hydrogen supply system |
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