CN115899560A - Hydrogen supply system and method based on alloy hydrogen storage - Google Patents

Abstract

The invention discloses a hydrogen supply system and a hydrogen supply method based on alloy hydrogen storage, which comprises the following steps: the hydrogen supply subassembly includes hydrogen collection dress check, reactor body and at least one alloy spare that is used for the cooperation to put hydrogen and store up hydrogen, at least one hydrogen passageway has been seted up to the inside of reactor body, the hydrogen passageway is linked together with the inside of hydrogen collection dress check, the subassembly of heating includes buffer tank and combustor, the buffer tank has the inlet end and gives vent to anger the end, the inlet end and the hydrogen passageway of buffer tank are linked together, be used for replenishing hydrogen in the buffer tank, the combustor is connected in the reactor body, and the inside of combustor is linked together with the end of giving vent to anger of buffer tank, be used for hydrogen to take place the catalytic combustion reaction and supply alloy spare with the produced heat of its reaction, put hydrogen with the activation of cooperation hydrogen collection dress check, refrigeration assembly connects in the combustor, be used for turning into the refrigerating capacity and acting on alloy spare with the heat that the combustor produced, store up hydrogen with the cooling of cooperation buffer tank. The invention can solve the problems of limited use scenes and poor applicability.

Description

Hydrogen supply system and method based on alloy hydrogen storage

Technical Field

The invention relates to the technical field of hydrogen storage, transportation and supply, in particular to a hydrogen supply system based on alloy hydrogen storage.

Background

The alloy has low pressure when storing hydrogen, high hydrogen purity and convenient operation, can greatly improve the safety, reliability and maintenance convenience of hydrogen energy utilization, and is a hydrogen storage mode with the most development prospect.

Because the heat conductivity coefficient of the hydrogen storage alloy is very small, the traditional alloy hydrogen storage tank generally adopts an external immersion type or internal heat exchange finned tube mode for heat exchange, the interval distance of an alloy bed layer is large, so that the heat resistance is very large, the temperature distribution in the tank body is easy to cause non-uniformity, and the hydrogen charging and discharging performance of the alloy hydrogen storage tank is influenced. The hydrogen storage alloy generates endothermic reaction when releasing hydrogen, and generates exothermic reaction when charging hydrogen, which can not provide or remove the required heat in time, and the hydrogen charging and discharging reaction can be gradually slowed down or even stopped. For example, application No.: chinese patent publication No. CN201910060601 discloses a temperature compensation type alloy hydrogen storage and supply system, wherein a hydrogen supply device needs to be equipped with an external circulating water system for heat exchange. For example, application numbers are: chinese patent No. CN202010386531 discloses a heat self-circulation system and method for supplying hydrogen storage hydrogen for marine alloy, wherein a refrigeration unit is required to be started to provide cooling water during hydrogen charging. The hydrogen supply device needs to be externally connected with a high-power electricity, a circulating water system or a refrigerating unit, has a complex structure and high energy consumption, and is limited to be used in occasions which do not meet the requirements of external environments.

Therefore, a hydrogen supply system and a hydrogen supply method based on alloy hydrogen storage are needed to solve the problems of limited use scenarios and poor applicability caused by the need of external heat exchange or refrigeration equipment to realize the operation of the hydrogen supply system in the prior art.

Disclosure of Invention

In view of this, it is necessary to provide a hydrogen supply system and a hydrogen supply method based on alloy hydrogen storage, which solve the technical problems of limited use scenarios and poor applicability caused by the need of external heat exchange or refrigeration equipment to implement the operation of the hydrogen supply system in the prior art.

In order to achieve the above technical object, the present invention provides a hydrogen supply system based on alloy hydrogen storage, including:

the hydrogen supply assembly comprises a hydrogen container grid, a reactor body and at least one alloy piece, wherein at least one hydrogen channel is formed in the reactor body and communicated with the inside of the hydrogen container grid, and the alloy piece is arranged in the hydrogen channel and is used for matching hydrogen discharge and storage;

the heating assembly comprises a buffer tank and a burner, the buffer tank is provided with an air inlet end and an air outlet end, the air inlet end of the buffer tank is communicated with the hydrogen channel and used for supplementing hydrogen into the buffer tank, the burner is connected to the reactor body, the interior of the burner is communicated with the air outlet end of the buffer tank and used for enabling the hydrogen to generate catalytic combustion reaction and supplying heat generated by the reaction to the alloy piece so as to cooperate with the activation and hydrogen discharge of the hydrogen containing grid;

the refrigeration assembly is connected with the combustor and used for converting heat generated by the combustor into refrigeration capacity and acting on the alloy piece so as to cooperate with the buffer tank for cooling and storing hydrogen.

Furthermore, the refrigeration assembly comprises a thermoacoustic refrigeration member and a cold accumulation member, the interior of the thermoacoustic refrigeration member is communicated with the interior of the burner and used for converting heat generated in the burner into refrigeration capacity, and the cold accumulation member is connected to the thermoacoustic refrigeration member and used for storing the refrigeration capacity converted by the thermoacoustic refrigeration member.

Further, the refrigeration subassembly still includes intake pipe, outlet duct and first valve body, the intake pipe with the inside of cold storage piece is linked together, is used for toward the inside of cold storage piece lets in the air, the both ends of outlet duct respectively with reactor body and cold storage piece are linked together, are used for letting in refrigeration volume the reactor body, in order to cooperate the alloy spare stores up hydrogen, first valve body is located on the outlet duct, and be connected in the outlet duct.

Furthermore, the heating assembly further comprises a heat exchange piece, the heat exchange piece is provided with an air inlet end and an air outlet end, the air inlet end of the heat exchange piece is connected to the thermoacoustic refrigerating piece, and the air outlet end of the heat exchange piece is connected to the reactor body and used for cooling high-temperature tail gas flowing out of the thermoacoustic refrigerating piece and introducing the high-temperature tail gas into the reactor body so as to cooperate with activation and hydrogen discharge of the alloy piece.

Furthermore, a plurality of temperature control channels have still been seted up to the inside of reactor body, and a plurality of temperature control channels are followed the circumference evenly distributed of hydrogen passageway, just temperature control channel with the end of giving vent to anger of piece and outlet duct homogeneous phase intercommunication are used for right the hydrogen passageway heating or refrigeration.

Furthermore, the refrigeration assembly further comprises a temperature sensor, and the temperature sensor is connected with the cold accumulation piece.

Furthermore, a pressure relief opening is formed in the buffer tank, the heating assembly further comprises a pressure sensor, and the pressure sensor is connected to the buffer tank and used for monitoring the internal pressure of the buffer tank.

Further, the alloy piece comprises a plurality of hydrogen storage alloys, and the hydrogen storage alloys are arranged in the hydrogen channel at intervals along the hydrogen channel.

Further, the hydrogen supply assembly further comprises a second valve body, and the second valve body is arranged between the hydrogen container grid and the hydrogen channel and connected to the hydrogen container grid.

The technical scheme of the invention also provides a hydrogen supply method based on alloy hydrogen storage, which is carried out by using the hydrogen supply system based on alloy hydrogen storage, and comprises the following steps:

s1, firstly introducing hydrogen in a buffer tank into a combustor, mixing the hydrogen with air entering the combustor, generating flameless combustion reaction under the action of a catalyst, and introducing high-temperature tail gas after combustion into a thermoacoustic refrigerating piece;

s2, the thermoacoustic refrigerating element converts the high-temperature tail gas into refrigerating capacity to be stored in the cold storage element, the cooled tail gas is introduced into the temperature control channel, and the temperature control channel is used for providing heating capacity to heat the alloy element in the hydrogen channel;

s3, after the proper temperature is reached, opening the second valve body, discharging the hydrogen in the hydrogen packaging grid, enabling the hydrogen to flow through the hydrogen channel, enabling the hydrogen to interact with an alloy piece in the hydrogen channel, completing activation hydrogen discharging of the hydrogen, and enabling the hydrogen to enter the buffer tank along the hydrogen channel to timely supplement the hydrogen for combustion reaction for the buffer tank;

s4, after the upper limit of the storage of the cold storage part is reached, the thermoacoustic refrigerating part stops converting the high-temperature tail gas into refrigerating capacity, the high-temperature tail gas is cooled by the heat exchange part and then is introduced into the temperature control channel, and the heating capacity is provided for heating the alloy part in the hydrogen channel;

and S5, when hydrogen is stored, stopping supplying the gas to the buffer tank, stopping generating the high-temperature tail gas in the combustor, and introducing the air into the reactor body through the gas outlet pipe of the cold storage piece for hydrogen storage and temperature reduction of the alloy piece.

Compared with the prior art, the invention has the beneficial effects that: place the hydrogen passageway of reactor body in the alloy spare in, the hydrogen passageway is linked together with the inside of hydrogen collection dress check, the hydrogen of buffer tank release takes place catalytic combustion reaction in the combustor and produces high temperature tail gas, high temperature tail gas is at first let in the reactor after the cooling through the refrigeration subassembly originally internally, heat the activation of putting hydrogen with cooperation hydrogen to the alloy spare, the refrigeration subassembly can turn into the refrigerating output with the heating capacity simultaneously, and store it, be used for cooling for the alloy spare when storing hydrogen. Compared with the prior art, need not cool down the heat that the catalytic combustion reaction produced through external equipment, in order to realize the hydrogen of putting of hydrogen, and also do not come to provide the refrigerating output to the alloy piece with external equipment, but utilize hydrogen catalytic combustion as the heat source, the cooperation refrigeration subassembly realizes thermal conversion, store and provide the cold source, the hydrogen supply device need not external heat transfer circulating water system, need not to dispose refrigerating unit, overall structure is compact, the energy consumption is low, energy utilization is rateed highly, and the range of application is extensive, can solve the technical problem that the use scene is restricted and the suitability is poor.

Drawings

FIG. 1 is a schematic structural diagram of a hydrogen supply system based on alloy hydrogen storage according to an embodiment of the present invention;

FIG. 2 is a schematic view of a structure in which a hydrogen occluding alloy is attached to a reactor body according to an embodiment of the present invention.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

Referring to fig. 1 and 2, the present invention provides a hydrogen supply system based on alloy hydrogen storage, including: the hydrogen supply assembly 1, the heating assembly 2 and the refrigerating assembly 3, the hydrogen supply assembly 1 comprises a hydrogen container grid 11, a reactor body 12 and at least one alloy piece 13, at least one hydrogen channel is arranged inside the reactor body 12, the hydrogen channel is communicated with the hydrogen container grid 11, the hydrogen channel is arranged in the alloy piece 13 and used for matching hydrogen discharge and storage, the heating assembly 2 comprises a buffer tank 21 and a burner 22, the buffer tank 21 is provided with an air inlet end and an air outlet end, the air inlet end of the buffer tank 21 is communicated with the hydrogen channel and used for supplementing hydrogen into the buffer tank 21, the burner 22 is connected to the reactor body 12, the air outlet end of the burner 22 is communicated with the air outlet end of the buffer tank 21 and used for catalytic combustion reaction of hydrogen and supplying heat generated by reaction to the alloy piece 13, the hydrogen is discharged by matching with activation of the hydrogen container grid 11, the refrigerating assembly 3 is connected to the burner 22 and used for converting the heat generated by the burner 22 into refrigerating amount and acting on the alloy piece 13 and matching with the temperature reduction of the buffer tank 21.

In this device, place the hydrogen passageway of reactor body 12 in the alloy spare 13 in, the hydrogen passageway is linked together with the inside of hydrogen collection dress check 11, the hydrogen of buffer tank 21 release takes place catalytic combustion reaction in combustor 22 and produces high temperature tail gas, high temperature tail gas is at first let in reactor body 12 after cooling through refrigeration subassembly 3, heat the activation of putting hydrogen with cooperation hydrogen to alloy spare 13, refrigeration subassembly 3 can turn into the refrigerating output with the heating capacity simultaneously, and store it, be used for cooling for alloy spare 13 when storing hydrogen.

It can be understood, compare in prior art, need not cool down the heat that catalytic combustion reaction produced through external equipment, in order to realize the hydrogen of putting of hydrogen, and also do not come to provide the refrigerating output to alloy 13 with external equipment, but utilize hydrogen catalytic combustion as the heat source, cooperation refrigeration subassembly 3 realizes thermal conversion, store and provide the cold source, the hydrogen supply device need not external heat transfer circulating water system, need not to dispose the refrigerating unit, overall structure is compact, the energy consumption is low, energy utilization is rateed highly, the range of application is extensive, can solve the technical problem that the use scene is restricted and the suitability is poor.

Furthermore, the hydrogen container grid 11 in the device is a hydrogen source for providing hydrogen, and the outlet of the hydrogen channel is connected with an external fuel cell system, so as to provide the activated hydrogen for the external fuel cell system.

In one embodiment, the alloy member 13 includes a plurality of hydrogen storage alloys 131, and the plurality of hydrogen storage alloys 131 are disposed in the hydrogen passage at intervals along the hydrogen passage.

It can be understood that, as shown in fig. 2, the alloy part 13 is formed by alternately arranging and combining a first partition plate 132, a first fin 133, a second fin 134 and a second partition plate 135, the first partition plate 132, the first fin 133 and a heat exchange cavity 136 form a heat exchange side, and the heat exchange cavity 136 is located between the first partition plate 132 and the first fin 133; the second separator 135, the second fin 134 and the hydrogen storage alloy 131 constitute an alloy side, and the hydrogen storage alloy 131 is located between the second separator 135 and the second fin 134. Among them, the hydrogen storage alloy 131 includes, but is not limited to, AB (e.g., tiFe) and AB2 (e.g., tiMn 2) based hydrogen storage alloys 131. The alloy side and the heat exchange side are arranged at intervals, one side of the joint shares a partition plate, and the two sides of each alloy side are heat exchange sides.

As an implementation manner, a plurality of temperature control channels are further formed inside the reactor body 12, the temperature control channels are uniformly distributed along the circumferential direction of the hydrogen channel, and the temperature control channels are communicated with the air outlet end of the heat exchange piece 23 and the air outlet pipe 34, so as to heat or refrigerate the hydrogen channel.

It is understood that the temperature control channel is arranged for realizing the transfer of heating and cooling capacity, and is used for heating or cooling the alloy piece 13.

As another embodiment, as shown in fig. 1, the hydrogen supply assembly 1 further includes a second valve body 14, and the second valve body 14 is disposed between the hydrogen container lattice 11 and the hydrogen passage and connected to the hydrogen container lattice 11.

It is understood that the second valve body 14 is provided for effecting hydrogen supply on and off operations of the reactor body 12 by the hydrogen container compartment 11.

As shown in fig. 1, the heating module 2 further includes a heat exchange member 23, and a pressure sensor 24 connected to the buffer tank 21.

The heat exchange member 23 has an inlet end and an outlet end, the inlet end of the heat exchange member 23 is connected to the thermoacoustic refrigerating member 31, and the outlet end is connected to the reactor body 12, and is used for cooling the high-temperature tail gas flowing out of the thermoacoustic refrigerating member 31 and introducing the high-temperature tail gas into the reactor body 12 so as to cooperate with activation and hydrogen release of the alloy member 13.

It can be understood that the heat exchange member 23 is used for continuing to cool the high-temperature tail gas after the refrigerating capacity of the cold accumulation member 32 for dedusting is fully stored, that is, the temperature of the high-temperature tail gas is reduced to 60-90 ℃ after passing through the thermoacoustic refrigerating member 31, and the high-temperature tail gas enters the reactor body 12 through the heat exchange member 23. When the cold accumulation piece 32 does not reach the set temperature, the heat exchange piece 23 does not need to be opened, when the cold accumulation piece 32 reaches the set temperature, that is, when the cold accumulation amount is saturated, the heat exchange piece 23 is opened to cool the high-temperature tail gas, so as to ensure that the temperature of the flue gas entering the reactor body 12 is proper, wherein the heat exchange piece 23 is an air cooling heat exchanger, and the air cooling heat exchanger is a conventional arrangement known by persons skilled in the art.

As an implementation mode, a pressure relief opening is formed in the buffer tank 21, and the pressure sensor 24 is connected to the buffer tank 21 and used for monitoring the internal pressure of the buffer tank 21.

It can be understood that when the hydrogen gas with pressure is replenished into the buffer tank 21, the excess hydrogen gas is discharged from the pressure release port after the pressure reaches the set value.

As shown in fig. 1, the refrigeration assembly 3 includes a thermo-acoustic refrigeration member 31 and a cold storage member 32, the interior of the thermo-acoustic refrigeration member 31 is communicated with the interior of the burner 22 for converting the heat generated in the burner 22 into refrigeration capacity, and the cold storage member 32 is connected to the thermo-acoustic refrigeration member 31 for storing the refrigeration capacity converted by the thermo-acoustic refrigeration member 31.

It can be understood that the arrangement of the thermo-acoustic refrigerating element 31 and the cold storage element 32 is used for cooling the high-temperature tail gas and storing the refrigerating capacity, and the thermo-acoustic refrigerating element 31 is composed of a thermo-acoustic engine and a thermo-acoustic refrigerator, and converts the heat energy of the high-temperature tail gas into sound energy through the action of thermo-acoustic and acoustic refrigeration, and then consumes the sound energy to obtain the refrigerating capacity at the cold end. The refrigerating capacity is transferred to the cold storage member 32 for storage through the refrigerating machine circulating between the thermoacoustic refrigerating member 31 and the cold storage member 32. The cold accumulation member 32 is filled with copper alloy or stainless steel wire mesh as a cold accumulation medium.

Further, the thermo-acoustic cooling member 31 and the cold storage member 32 in the present device are conventional arrangements well known to those skilled in the art, and will not be described herein.

As shown in fig. 1, the refrigeration assembly 3 further includes an air inlet pipe 33, an air outlet pipe 34, a first valve body 35, and a temperature sensor 36 connected to the cold storage member 32.

Wherein, the inlet pipe 33 is communicated with the inside of the cold accumulation member 32 for introducing air into the inside of the cold accumulation member 32, two ends of the outlet pipe 34 are respectively communicated with the reactor body 12 and the cold accumulation member 32 for introducing refrigerating capacity into the reactor body 12 to cooperate with the alloy member 13 to store hydrogen, and the first valve body 35 is arranged on the outlet pipe 34 and connected to the outlet pipe 34.

It can be understood that the gas inlet pipe 33, the gas outlet pipe 34 and the first valve body 35 are used for storing hydrogen and reducing the temperature of the hydrogen in order to realize that the refrigerating capacity in the cold accumulation piece 32 is introduced into the alloy piece 13.

In one embodiment, the temperature sensor 36 is connected to the cold storage member 32.

It is understood that a temperature sensor 36 is provided above the cold storage member 32 to detect the temperature in the cold storage member 32.

Further, in the device, the concentration of hydrogen entering the combustor 22 is controlled to be 10%, the temperature of high-temperature tail gas is 450 ℃, the temperature is reduced to 60 ℃ after passing through the thermoacoustic refrigerating element 31, the temperature in the cold storage element 32 is monitored to be continuously reduced, the thermoacoustic refrigerating element 31 is closed after the temperature is reduced to 10 ℃, the heat exchange element 23 is opened, the temperature of flue gas entering the reactor body 12 is 60-90 ℃, the reactor body 12 releases hydrogen, and the pressure of the hydrogen is 0.3MPa. When the hydrogen pressure is reduced to be below 0.2MPa, the second valve body 14 and the first valve body 35 are opened, the hydrogen container grid 11 is decompressed to be 4.5MPa, and meanwhile, cold air passing through the cold storage piece 32 is introduced into the reactor body 12, and the hydrogen charging process is started. The temperature of the cold accumulation member 32 rises to 15 ℃, the second valve body 14 and the first valve body 35 are closed, and the hydrogen charging is completed, wherein the first valve body 35 and the second valve body 14 are both solenoid valves, and the conventional arrangement known to those skilled in the art is adopted here, and is not described in an excessive way.

Referring to fig. 1 and 2, the present invention provides a hydrogen supply method based on alloy hydrogen storage, which is performed by using the hydrogen supply system based on alloy hydrogen storage as described above, and includes the steps of:

s1, firstly introducing hydrogen in a buffer tank 21 into a combustor 22, mixing the hydrogen with air entering the combustor 22, generating flameless combustion reaction under the action of a catalyst, and introducing high-temperature tail gas after combustion into a thermoacoustic refrigerating element 31;

s2, the thermoacoustic refrigerating part 31 converts the high-temperature tail gas into refrigerating capacity to be stored in the cold storage part 32, the cooled tail gas is introduced into the temperature control channel, and the temperature control channel is used for providing heating capacity to heat the alloy part 13 in the hydrogen channel;

s3, after the proper temperature is reached, opening the second valve body 14, releasing the hydrogen in the hydrogen container grid 11, enabling the hydrogen to flow through the hydrogen channel and interact with the alloy piece 13 in the hydrogen channel to complete the activation and hydrogen release of the hydrogen, and enabling the hydrogen to enter the buffer tank 21 along the hydrogen channel to timely supplement the hydrogen for the combustion reaction for the buffer tank 21;

s4, after the upper storage limit of the cold storage part 32 is reached, the thermoacoustic refrigerating part 31 stops converting the high-temperature tail gas into refrigerating capacity, the high-temperature tail gas is cooled by the heat exchange part 23 and then is introduced into the temperature control channel, and the heating capacity is also provided for heating the alloy part 13 in the hydrogen channel;

and S5, when hydrogen is stored, the buffer tank 21 stops supplying air, high-temperature tail gas is stopped being generated in the combustor 22, and the air is introduced into the reactor body 12 through the air outlet pipe 34 of the cold accumulation piece 32 and is used for storing hydrogen and cooling the alloy piece 13.

In the specific working process of the invention, hydrogen in the buffer tank 21 is firstly introduced into the combustor 22, is mixed with air entering the combustor 22, and generates flameless combustion reaction under the action of a catalyst, and high-temperature tail gas after combustion is introduced into the thermoacoustic refrigerating element 31; then the thermoacoustic refrigerating part 31 converts the high-temperature tail gas into refrigerating capacity to be stored in the cold storage part 32, and introduces the cooled tail gas into the temperature control channel, and the temperature control channel is used for providing heating capacity to heat the alloy part 13 in the hydrogen channel; after reaching the proper temperature, the second valve body 14 is opened, the hydrogen in the hydrogen container grid 11 is discharged and flows through the hydrogen channel, and the hydrogen and the alloy part 13 in the hydrogen channel jointly act to complete the activation and hydrogen discharge of the hydrogen, and simultaneously the hydrogen enters the buffer tank 21 along the hydrogen channel to timely supplement the hydrogen for the combustion reaction for the buffer tank 21; then, after the upper storage limit of the cold storage member 32 is reached, the thermoacoustic refrigerating member 31 stops converting the high-temperature tail gas into refrigerating capacity, the high-temperature tail gas is cooled by the heat exchange member 23 and then is introduced into the temperature control channel, and the heating capacity is also provided for heating the alloy member 13 in the hydrogen channel; when the pressure of the hydrogen is reduced to be below 0.2MPa and hydrogen is stored in the buffer tank 21, the buffer tank 21 stops supplying the hydrogen, the combustor 22 stops generating high-temperature tail gas, and the air is introduced into the reactor body 12 through the air outlet pipe 34 of the cold accumulation piece 32 and is used for storing the hydrogen and reducing the temperature of the alloy piece 13.

Furthermore, the device adopts the microchannel alloy hydrogen storage reactor body 12 based on the plate-fin structure, and utilizes the microchannel structure to form a plurality of small-scale reaction chambers and the secondary heat transfer surface effect of the plate-fin reactor, thereby effectively reducing the thermal resistance of the hydrogen storage alloy 131 bed layer, increasing the heat exchange area, improving the heat transfer coefficient of the hydrogen storage reactor and improving the hydrogen charging and discharging performance. Meanwhile, hydrogen catalytic combustion is used as a heat source, a cold source is provided by matching with the thermoacoustic refrigerating part 31 and the cold accumulation part 32, the hydrogen supply device does not need to be externally connected with a heat exchange circulating water system, a refrigerating unit does not need to be configured, and the hydrogen supply device is compact in overall structure, low in energy consumption, high in energy utilization rate and wide in application range.

Through above-mentioned structure, can be used for solving among the prior art because of needing outside heat transfer or refrigeration plant to realize the operation of hydrogen supply system to lead to the limited and poor problem of suitability of use scene.

While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (10)

1. A hydrogen supply system based on alloy hydrogen storage, comprising:

the hydrogen supply assembly comprises a hydrogen container grid, a reactor body and at least one alloy piece, wherein at least one hydrogen channel is formed in the reactor body and communicated with the inside of the hydrogen container grid, and the alloy piece is arranged in the hydrogen channel and is used for matching hydrogen discharge and storage;

the heating assembly comprises a buffer tank and a burner, the buffer tank is provided with an air inlet end and an air outlet end, the air inlet end of the buffer tank is communicated with the hydrogen channel and used for supplementing hydrogen into the buffer tank, the burner is connected to the reactor body, the inside of the burner is communicated with the air outlet end of the buffer tank and used for enabling the hydrogen to generate catalytic combustion reaction and supplying heat generated by the reaction to the alloy part so as to cooperate with the activation and hydrogen discharge of the hydrogen container;

the refrigeration assembly is connected with the combustor and used for converting heat generated by the combustor into refrigeration capacity and acting on the alloy piece so as to cooperate with the buffer tank for cooling and storing hydrogen.

2. The alloy-based hydrogen storage supply system according to claim 1, wherein the refrigeration assembly comprises a thermo-acoustic refrigeration member and a cold storage member, an interior of the thermo-acoustic refrigeration member is communicated with an interior of the burner for converting heat generated in the burner into refrigeration capacity, and the cold storage member is connected to the thermo-acoustic refrigeration member for storing the refrigeration capacity converted by the thermo-acoustic refrigeration member.

3. The alloy-based hydrogen storage supply system according to claim 2, wherein the refrigeration assembly further comprises an air inlet pipe, an air outlet pipe and a first valve body, the air inlet pipe is communicated with the interior of the cold storage member and used for introducing air into the interior of the cold storage member, two ends of the air outlet pipe are respectively communicated with the reactor body and the cold storage member and used for introducing refrigeration into the reactor body so as to match the alloy member for storing hydrogen, and the first valve body is arranged on the air outlet pipe and connected to the air outlet pipe.

4. The alloy-based hydrogen storage supply system according to claim 3, wherein the heating assembly further comprises a heat exchange member, the heat exchange member has an inlet end and an outlet end, the inlet end of the heat exchange member is connected to the thermoacoustic cooling member, and the outlet end of the heat exchange member is connected to the reactor body, for cooling the high-temperature tail gas flowing out of the thermoacoustic cooling member and introducing the cooled high-temperature tail gas into the reactor body to cooperate with the activation and hydrogen release of the alloy member.

5. The alloy hydrogen storage-based hydrogen supply system according to claim 4, wherein the reactor body is further internally provided with a plurality of temperature control channels, the temperature control channels are uniformly distributed along the circumferential direction of the hydrogen channel, and the temperature control channels are communicated with the gas outlet end and the gas outlet pipe of the heat exchange piece and used for heating or refrigerating the hydrogen channel.

6. A hydrogen supply system for alloy-based hydrogen storage according to claim 2, wherein said refrigeration assembly further comprises a temperature sensor connected to said cold storage member.

7. The alloy-based hydrogen storage hydrogen supply system according to claim 1, wherein the buffer tank is provided with a pressure relief port, and the heating assembly further comprises a pressure sensor connected to the buffer tank for monitoring the pressure inside the buffer tank.

8. A hydrogen supply system for alloy-based hydrogen storage according to claim 1, wherein said alloy member includes a plurality of hydrogen storage alloys interposed in said hydrogen gas passage at spaced intervals along said hydrogen gas passage.

9. The alloy-based hydrogen storage supply system according to claim 1, wherein the hydrogen supply assembly further comprises a second valve body disposed between the hydrogen containing compartment and the hydrogen passage and connected to the hydrogen containing compartment.

10. A hydrogen supply method based on alloy hydrogen storage, which is carried out by using the hydrogen supply system based on alloy hydrogen storage according to any one of claims 1 to 9, comprising the steps of:

s1, firstly introducing hydrogen in a buffer tank into a combustor, mixing the hydrogen with air entering the combustor, generating flameless combustion reaction under the action of a catalyst, and introducing high-temperature tail gas after combustion into a thermoacoustic refrigerating piece;

s2, the thermoacoustic refrigerating piece converts the high-temperature tail gas into refrigerating capacity to be stored in the cold storage piece, the cooled tail gas is introduced into the temperature control channel, and the temperature control channel is used for providing heating capacity to heat the alloy piece in the hydrogen channel;

s3, after the proper temperature is reached, opening the second valve body, discharging the hydrogen in the hydrogen packaging grid, enabling the hydrogen to flow through the hydrogen channel, enabling the hydrogen to interact with an alloy piece in the hydrogen channel, completing activation hydrogen discharging of the hydrogen, and enabling the hydrogen to enter the buffer tank along the hydrogen channel to timely supplement the hydrogen for combustion reaction for the buffer tank;

s4, after the upper limit of the storage of the cold storage part is reached, the thermoacoustic refrigerating part stops converting the high-temperature tail gas into refrigerating capacity, the high-temperature tail gas is cooled by the heat exchange part and then is introduced into the temperature control channel, and the heating capacity is provided for heating the alloy part in the hydrogen channel;

and S5, when hydrogen is stored, stopping supplying the gas to the buffer tank, stopping generating the high-temperature tail gas in the combustor, and introducing the air into the reactor body through the gas outlet pipe of the cold storage piece for hydrogen storage and temperature reduction of the alloy piece.

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