319 results about "Solid hydrogen" patented technology

The invention relates to the technical field of hydrogen preparation, and provides a hydrogen storage device based on a solid hydrogen storage material and a hydrogen production method thereof.The device comprises a fuel tank internally provided with a reaction cavity used for containing an aluminum hydride material and mixed powder; the heater is arranged on the outer side of the fuel tank; the first end of the water recycling assembly is communicated with the reaction cavity, and the second end of the water recycling assembly is communicated with the fuel cell system so as to recycle water generated by the fuel cell system to the reaction cavity; the first end of the hydrogen discharging assembly is communicated with the reaction cavity, and the second end is communicated with a fuel cell system. According to the hydrogen storage device provided by the invention, through the application of the high-specific-energy solid hydrogen storage material aluminum hydride which can be stored at normal pressure and release hydrogen at a relatively low temperature, the thermal decomposition process of the metal hydride in the fuel tank and the coupling reaction process of the metal hydride and water are optimized, and the hydrogen is produced by utilizing the hydrolysis reaction of the aluminum hydride thermal decomposition reactant simple substance aluminum and the water; meanwhile, thermal decomposition of aluminum hydride is promoted through heat released by hydrolysis reaction, hydrogen release is coupled, and effective utilization of heat is achieved.

The utility model discloses a magnesium-based solid hydrogen storage device which comprises a tank body, an upper cover, a hydrogen pipe and a heat-conducting oil pipe, the tank body is of an upward opening structure and comprises an outer tank and an inner tank, an oil guide inlet is formed in the top of the outer tank, an oil guide outlet is formed in the bottom of the outer tank, an oil guide channel is formed between the outer tank and the inner tank, and a magnesium-based solid hydrogen storage material is filled in the inner tank; the upper cover covers the tank body; the hydrogen pipe penetrates through the upper cover and is communicated with the inner tank, and a plurality of air holes are formed in the hydrogen pipe; the heat conduction oil pipe penetrates through the upper cover and extends into the inner tank. An oil guide channel and a heat-conducting oil pipe are arranged, heat-conducting oil is continuously added in the hydrogen absorption and desorption process, the internal temperature of the tank body is regulated and controlled, the magnesium-based hydrogen storage material is in a high-temperature environment through internal and external combination, the temperature of the inner tank is kept stable, and the hydrogen absorption and desorption reaction rate is increased; and a plurality of air holes are formed in the surface of the hydrogen pipe, so that hydrogen fully reacts with the magnesium-based hydrogen storage material in each area of the inner tank body, and the hydrogen storage performance is enhanced.

The invention discloses a solid hydrogen storage system capacity state estimation method. The method comprises the following steps of: firstly, simplifying a high-dimensional numerical calculation model into a lumped parameter model according to a chemical chemistry kinetic equation of solid hydrogen storage / desorption, and then carrying out linearization processing to obtain a state space equation and a linearization model of a solid hydrogen storage system; then designing extended Kalman filtering for monitoring the state of the solid-state hydrogen storage system, estimating the state of the solid-state hydrogen storage system at the future moment by using an extended Kalman filtering algorithm, and accordingly outputting the state of the hydrogen content SOC of the solid-state hydrogen storage system; and finally, predicting and updating the state of the solid-state hydrogen storage system through loop iteration, and adjusting the SOC estimated value of the solid-state hydrogen storage system in real time. According to the method, the phenomenon of error accumulation in hydrogen flow integration can be avoided, the SOC estimation precision is improved, meanwhile, the hydrogen content state of the system is estimated in real time under the dynamic working condition, dynamic control over system operation is guided, and errors caused by measurement noise and model uncertainty are reduced.

The utility model discloses an inerting and discharging combined safety protection device for a solid hydrogen storage tank, and belongs to the technical field of hydrogen storage and supply. The device comprises a solid hydrogen storage tank main body, a pressure and temperature sensing module, an inert gas injection system, a flameless relief device and a hydrogen treatment unit, the pressure and temperature sensing module monitors parameters in the tank in real time, when the parameters exceed a preset threshold value, the inert gas injection system injects inert gas from the lower portion of the tank body at constant pressure, the air pressure is stabilized through flow control, and meanwhile hydrogen is pumped out of an opening in the upper portion of the tank body to the processing unit; and a discharge port is formed in the side surface of the tank body and is linked with the flameless discharge device. According to the device, through the design of inerting inhibition and safe release, the potential safety hazard of overtemperature and overpressure in the solid hydrogen storage process is solved, the stability and safety of a hydrogen storage system are improved, and the device is convenient to operate and adapts to transformation of an existing solid hydrogen storage tank.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

The invention relates to the technical field of purification, and discloses a hydrogen purification method based on a magnesium-based solid hydrogen storage material, which comprises the following steps: S11, packaging the magnesium-based solid hydrogen storage material into a plurality of purification units, connecting the two purification units in parallel, and arranging a thermal interaction unit between the two parallel purification units to form a primary purification module; and S2, purification: introducing the low-purity hydrogen into the purification module, so that the low-purity hydrogen is respectively subjected to a hydrogen absorption reaction and a hydrogen desorption reaction for multiple times in the purification units connected in parallel, the low-purity hydrogen is purified, heat is supplied to the purification units which are subjected to the hydrogen desorption reaction through the heat interaction unit, and heat energy released by the hydrogen absorption reaction is stored. Based on the selective adsorption capacity of the solid hydrogen storage material to hydrogen, the solid hydrogen storage material is used for adsorbing hydrogen and discharging impurity gas, so that the purity of hydrogen is improved, and the heat interaction unit is used for storing heat energy released by a hydrogen absorption reaction and applying the heat energy to a hydrogen desorption reaction, so that the energy consumption in the purification process is reduced.

The invention aims to provide a solid hydrogen storage hydrogen closed cycle hydrogen source generator for an underwater vehicle, which belongs to the field of dehydrogenation devices and comprises a reactor, a pressure stabilizing common rail pipe, a hydrogen storage material delivery pump, a solid hydrogen storage material storage unit, a solid hydrogen storage material spraying device, a product collecting device and a hydrogen storage unit. The hydrogen storage material conveying pump is connected with the pressure stabilizing common rail pipe, the solid hydrogen storage material storage unit and the solid hydrogen storage material spraying device, the hydrogen storage unit is connected with the pressure stabilizing common rail pipe, and the reactor is connected with the hydrogen storage unit. The solid hydrogen storage material is used for releasing hydrogen, one part of hydrogen is conveyed to the fuel cell to react for power output of the underwater vehicle, the other part of circulating hydrogen assists the hydrogen storage material in injection, and an underwater closed circulation mode suitable for the underwater vehicle is achieved. The solid hydrogen storage material conveying module and the circulating hydrogen supply module are matched, and rapid mixing of the solid hydrogen storage material and hydrogen and large-flow injection of the solid hydrogen storage material are achieved.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

The invention discloses a hydrogen charging system and method for a magnesium-based solid hydrogen storage reaction kettle. A hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and a heat exchange coil pipe is arranged outside each placement position; the hydrogen charging system comprises a hydrogen charging part, a temperature control part and a safety protection part; the hydrogen filling part comprises a hydrogen filling main pipeline; a hydrogen flow controller and a hydrogen heat exchanger are arranged on the hydrogen filling main pipeline; the temperature control part comprises an external heat-conducting oil circulating system, the external heat-conducting oil circulating system comprises a heat-conducting oil tank, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a safety valve arranged on the reaction kettle, the safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen filling main pipeline, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The system has the advantages that the hydrogen storage tanks in the reaction kettle can be quickly and efficiently filled with hydrogen, and the safety of the system is ensured.

The invention relates to the technical field of vehicle power systems, in particular to a solid hydrogen storage device containing a low-temperature cold-start hydrogen storage cylinder and a fuel cell collaborative power assembly, and the device comprises a heat flow modulation module, a balance driving module, a release coordination module, a power matching module and a power assembly control module. In the hydrogen storage process, through real-time linkage judgment of the interface temperature difference and the heat flux change, directional feedback of energy in different areas is achieved, the stable hydrogen release condition of the hydrogen storage material is maintained, differentiated distribution is conducted on heating power according to the heat flux density deviation, invalid energy consumption and local energy accumulation are avoided, and the energy storage efficiency is improved. Dynamic balance is constructed between the hydrogen release rate and the phase change medium energy absorption rate, the hydrogen supply process is corrected through filtering estimation, the release flow is more stable and controllable, finally, the hydrogen supply stability and the load requirement are combined in the power output link, dynamic matching of the galvanic pile power and the external working condition is achieved, and the energy efficiency is improved. And the response flexibility and the energy conversion efficiency of the power system are improved.

The utility model discloses a solid hydrogen storage device suitable for quick filling, which comprises a hydrogen storage tank and an end cover, the end cover is provided with a hydrogen inlet / outlet, the hydrogen inlet / outlet is connected with a bottle valve, the bottle valve comprises a valve body, a gas outlet and a manual knob at the top of the valve body, the bottom of the hydrogen storage tank is provided with an integrated heating and radiating module, and the hydrogen storage tank is provided with a controller. A gas outlet of the bottle valve is connected with an electromagnetic valve, the electromagnetic valve is connected with a quick connector, the quick connector is connected to a hydrogen inlet of the hydrogen fuel cell through a hydrogen pipeline, the bottle valve is further provided with a temperature and pressure integrated sensor and a quick connector used for filling hydrogen, and the temperature and pressure integrated sensor and the integrated heating and heat dissipation module are electrically connected with a controller. The hydrogen storage device is simple and compact in structure, the operation process of connecting a hydrogen pipeline during hydrogen filling is simplified by adopting the quick connector, and the hydrogen storage tank is heated or cooled by the integrated heating and cooling module at the bottom of the hydrogen storage tank, so that the hydrogen release or filling efficiency of the hydrogen storage device is greatly improved.

The invention belongs to the technical field of hydrogen storage, and particularly relates to a vehicle-mounted hydrogen storage device and a hydrogen absorption and desorption method thereof. A vehicle-mounted hydrogen storage device comprises a hydrogen storage reactor arranged in a vehicle-mounted high-pressure container and filled with vanadium-based hydrogen storage alloy; the refrigerating system is used for providing a first fluid medium for the solid hydrogen storage reactor in a hydrogen absorption process so as to cool the hydrogen storage reactor to a preset hydrogen absorption temperature; the heating system is connected with a waste heat source of a vehicle-mounted engine and used for providing a second fluid medium for the hydrogen storage reactor in the hydrogen desorption process so as to heat the hydrogen storage reactor to the preset hydrogen desorption temperature; and the fluid conveying loop comprises a pipeline and a valve and is used for selectively communicating the refrigerating system or the heating system with the hydrogen storage reactor so as to convey the first fluid medium or the second fluid medium.

The invention provides sustained-release solid hydrogen peroxide as well as a preparation method and application thereof, and belongs to the technical field of hydrogen peroxide preparation, the sustained-release solid hydrogen peroxide comprises a hydrogen peroxide solution, a stabilizer, an excipient and a sustained-release agent, wherein the slow release agent is a compound of ethyl cellulose and chitosan, and the weight ratio of ethyl cellulose to chitosan is (1-2): 1; the addition amount of the slow-release agent is 0.5%-10% of the total mass of the slow-release solid hydrogen peroxide; according to the invention, ethyl cellulose (hydrophobic barrier) and chitosan (pH response degradation) are combined for use in the sustained-release agent, so that overhigh local concentration caused by concentrated release of hydrogen peroxide is avoided, and the explosion risk is reduced; the preparation method provided by the invention is a crystallization-drying integrated process, the production period can be shortened to 4 hours, while the traditional process needs more than 8 hours, and the energy consumption is reduced by 40%.

The invention relates to a solid hydrogen storage bottle with an internal heat exchange coupling heat pipe, which comprises a bottle body, a heat conduction part and a gas guide part, the heat conduction part is movably arranged in the bottle body, and a material storage cavity is formed in the bottle body; the air guide part keeps the material storage cavity communicated with the outside of the bottle body in the moving process; wherein the gas guide part synchronously moves along with the heat conduction part, and the heat conduction part keeps the hydrogen absorption material deviating from the gas guide part in the static process. The heat conduction part is movably arranged in the bottle body, so that when the heat conduction part moves, the hydrogen absorption material is thrown away from the gas guide part, the material cannot escape outwards, smooth flowing of hydrogen is kept, the number of the storage cavities is not limited by the structure, the multiple storage cavities can be arranged, the hydrogen absorption material is fully separated, and the hydrogen absorption effect is improved. And the whole structure keeps a good heat conduction effect on the hydrogen absorption material, and meanwhile, sufficient flow of hydrogen between the inside and the outside is ensured, so that the hydrogen absorption and hydrogen desorption efficiency is effectively ensured.

The invention discloses a magnesium-based solid hydrogen storage tank integrated with a resistance heating and electromagnetic coupling magnetic field structure, which comprises a tank body and a control cabinet integrated on the outer side wall of the tank body, a plurality of electrode plates are arranged in the tank body, and the electrode plates are electrically connected with a power supply cabinet on the side wall of the tank body through tabs on the electrode plates. The inner space of the tank body is divided into a plurality of hydrogen storage spaces by the plurality of electrode plates, magnesium-based solid hydrogen storage materials containing magnetic alloy metal and carbon materials are added into the hydrogen storage spaces through material adding ports formed in the outer side wall of the tank body, a temperature sensor is arranged in each hydrogen storage space, and a pressure sensor is arranged at the top of the tank body; a hydrogen inlet / outlet is formed in the top end of the tank body; a communicating hole for communicating two adjacent hydrogen storage spaces is formed in the center of the electrode plate. Through the synergistic effect of an electric field and a magnetic field, the thermal management performance of the magnesium-based hydrogen storage material is effectively improved, the hydrogen desorption cold start time is shortened, the thermal effect influence in the hydrogen charging and desorption process is reduced, stress concentration caused by volume expansion is relieved, and the hydrogen storage and release performance of the magnesium-based material is improved.

The invention relates to a rare earth modified AB2 type solid hydrogen storage alloy and a batch preparation method thereof, belongs to the technical field of hydrogen storage alloy materials, and solves the problems of high activation condition, long activation period, overhigh hydrogen absorption platform pressure, high batch preparation smelting difficulty, low yield, unstable product quality and the like of the traditional Ti-Mn series hydrogen storage alloy in the prior art. The specific composition of the hydrogen storage alloy is Ti < 1.1-x-y > Y < x > Zr < y > Mn < 2.0-y-z-m > Cr < z > Ni < m > Co < n >, x, y, z, m and n in the formula are atomic ratios, x is larger than or equal to 0.01 and smaller than or equal to 0.04, y is larger than or equal to 0.10 and smaller than or equal to 0.35, z is larger than or equal to 0.45 and smaller than or equal to 0.70, m is larger than or equal to 0.1 and smaller than or equal to 0.2, and n is larger than or equal to 0.05 and smaller than or equal to 0.15. The hydrogen storage alloy has good activation performance and hydrogen absorption and desorption performance, the hydrogen storage capacity is larger than or equal to 1.86 wt.%, and the hydrogen absorption and desorption platform pressure can be adjusted according to application requirements; under the conditions that the temperature is 20 DEG C and the initial hydrogen pressure is 3 MPa, activation can be completed through one-time hydrogen absorption and desorption circulation; after 200 times of hydrogen absorption and desorption cycles, the capacity retention ratio of the alloy is gt; and 98%. The invention further provides a preparation method of the hydrogen storage alloy, the method has the advantages of being simple and easy to operate, high in yield, stable in product quality and the like, and the problem of component segregation of a casting process is fundamentally solved.

The invention belongs to the technical field of hydrogen storage, and discloses an integrated framework for charging and discharging hydrogen in solid hydrogen storage. Comprising a solid hydrogen storage main frame for placing a solid hydrogen storage bottle, a fin radiator divided into a fan cover and a fin area, and a fan serving as an air inlet. Through excellent structural design, the solid metal hydrogen storage bottle is uniformly and stably cooled and heated in an air cooling and air heating mode, so that the temperature requirement of the solid metal hydrogen storage bottle for hydrogen charging and discharging is met. And meanwhile, the hydrogen storage bottle can be quickly pulled and replaced, and the maintenance and operation convenience is improved.

This invention discloses a vertical solid hydrogen storage device, comprising a hydrogen distribution and collection box, a heat exchange medium inlet box, a hydrogen storage box, and a heat exchange medium outlet box disposed within a vertical tank. A fixed central shaft is installed inside the hydrogen storage box, and two rotating partition plates on the central shaft divide the hydrogen storage box into a hydrogen storage material storage area and a non-hydrogen storage material storage area. A rotation start limit block is provided on the inner wall of the hydrogen storage box near each rotating partition plate in the hydrogen storage material storage area. The hydrogen storage material storage area is filled with solid hydrogen storage material, while the non-hydrogen storage material storage area contains elastic elements. The hydrogen storage material storage area is equipped with hydrogen storage material inlet and outlet pipes. The hydrogen distribution and collection box is connected to the hydrogen storage box via a hydrogen distribution and collection pipe. The heat exchange medium inlet box and the heat exchange medium outlet box are connected via heat exchange pipes, both of which are embedded in the solid hydrogen storage material. This invention simultaneously solves the heat and volume compensation problems during hydrogen charging and discharging processes, improving the reliability of the device.

The invention provides an extended-range solid hydrogen storage hydrogen fuel cell hydrogen thermal coupling power system, which comprises a proton exchange membrane hydrogen fuel cell power generation module used for converting hydrogen and oxygen into electric energy through electrochemical reaction; the alloy solid hydrogen storage and supply module is used for storing hydrogen in a low-pressure safe and high-density manner, releasing heat during hydrogen charging and exchanging heat with external cooling fluid; heat is absorbed during hydrogen desorption and exchanges heat with waste heat of the hydrogen fuel cell, so that hydrogen-heat coupling in the hydrogen supply process is realized; and the hydrogen thermal coupling thermal management module is used for transferring waste heat of the fuel cell to the solid hydrogen storage device so as to support the hydrogen desorption and heat absorption process of the solid hydrogen storage device. The technical problem of alloy solid hydrogen storage in hydrogen supply stability is solved, gas hydrogen can be stably and rapidly supplied to a fuel cell under the working conditions of vehicle starting, climbing or rapid power increasing and the like, power output stability of a system is maintained, and the strict requirement of the traffic power field for power performance is met.

The utility model provides solid hydrogen storage equipment, which relates to the technical field of hydrogen storage and comprises a support frame, an inner cylinder, an outer cylinder, a second temperature sensor, a lead and a sealing assembly, the inner cylinder and the outer cylinder are installed on the supporting frame, the inner cylinder is sleeved with the outer cylinder, a liquid inlet and a liquid outlet are formed in the outer cylinder, and a liquid storage cavity is formed between the inner cylinder and the outer cylinder; the second temperature sensor is installed on the inner cylinder and located in the liquid storage cavity. The second temperature sensor is connected with a wire which penetrates through the outer cylinder and is used for being connected with a controller. A sealing assembly is arranged between the wire and the outer cylinder. The second temperature sensor detects the temperature of liquid in the liquid storage cavity, and the controller can control the time when the heated liquid enters and exits the liquid storage cavity, so that the inner cylinder is prevented from being excessively heated, proper hydrogen is released, and hydrogen waste is reduced. In order to avoid leakage of the outer cylinder, the sealing assembly is arranged between the wire and the outer cylinder, heat loss of heating liquid can be reduced, and the heat utilization rate is increased.

The hydrogen and heat combined supply integrated system comprises a hydrogen storage unit and a heat storage unit which are arranged in a container, the hydrogen storage unit and the heat storage unit are connected through a pipeline unit, the hydrogen storage unit adopts a solid hydrogen storage mode, and the heat storage unit comprises a heat pump device and a thermocline water tank connected with the heat pump device. The heat pump device and the thermocline water tank are connected with the hydrogen storage unit through the pipeline unit, and the thermocline water tank is used for achieving layered storage of cold water and hot water. Compared with the prior art, the energy loss of cold and hot water mixing can be reduced, the heat exchange efficiency is improved, seamless connection of hydrogen absorption and desorption processes is achieved, and the compactness of the whole hydrogen and heat combined supply system is improved.

The utility model discloses a solid hydrogen storage material hydrogen absorption and desorption circulating device in the technical field of solid hydrogen storage materials, which comprises a water tank, a heat exchanger is mounted on the inner side of the water tank, one side of the heat exchanger is connected with a first water pipe, one end of the first water pipe is connected with a refrigerator, and the bottom of the refrigerator is connected with a second water pipe. The top of the water tank is provided with three sets of circulating parts which are evenly arranged, the heat exchanger cools and refrigerates water to the refrigerator through the first water pipe, then the water flows to the heat exchanger through the second water pipe, the water in the water tank flows through the circulating parts, and the circulating parts can enable hydrogen absorption and desorption to conduct circulating operation. The problems that when existing equipment carries out circulating hydrogen absorption and desorption on hydrogen energy, the cooling speed is low, the temperature cannot be conveniently and rapidly reduced, the heat insulation and heat preservation effect of the existing equipment is poor, and the efficiency and practicability of hydrogen absorption and desorption circulating operation of the equipment are affected are solved.

The utility model provides a solid hydrogen storage system, which comprises a hydrogen storage module, a waste heat recovery module and a waste heat export module, and the hydrogen storage module is respectively connected with a hydrogen source and a user side and is used for storing and releasing hydrogen; the waste heat recovery module is connected to the hydrogen storage module and can recover heat released in the hydrogen filling stage and store the heat through a heat storage working medium. The waste heat leading-out module is connected to the waste heat recovery module, heat stored by the waste heat recovery module is released and utilized, the waste heat leading-out module can be connected with the hydrogen storage module to serve as a heat source in the hydrogen desorption stage, and the waste heat leading-out module can also be connected with other systems with heat energy requirements. Waste heat in the hydrogen charging process is recycled, energy waste is avoided, efficient utilization of energy is achieved through system circulation, the conversion efficiency of a fuel cell can be fully exerted, good market applicability is achieved, the stored waste heat can serve as a heat source to be used for various ways, and the system is simple in overall structure, low in cost, high in practicability and suitable for popularization and application. The application range is wide.

The invention discloses a hydrogen slow-release composite material based on moisture self-regulation and a hydrogen slow-release device and method.The composite material comprises, by mass, 15-25 wt% of a hydrogen production component, and the hydrogen production component comprises a solid hydrogen production material and is used for reacting with water to release hydrogen; the water absorption component is used for absorbing and retaining water; 5-25 wt% of a water-consuming component for reacting with water to consume water; wherein the total solid water amount corresponding to the water absorption component and the water consumption component is greater than the theoretical water amount required by complete reaction of the hydrogen production component; the raw materials are mixed, compacted and molded to obtain the hydrogen slow-release composite material. When external water supply fluctuates, the material system can spontaneously adjust moisture entering a reaction environment, so that the effective water consumption participating in the hydrolysis reaction of magnesium hydride is more stable, the hydrogen production process is easier to maintain a slow and stable release state, and the dependence on high-precision external water supply equipment and complex control links is reduced.

The utility model discloses a solid hydrogen storage device, including the shell body, the upper end fixed mounting of shell body has the vacuumizing pipe, the inside of shell body is provided with the inner bag, the upper end fixed mounting of inner bag has the hydrogen injection pipe, the upper end fixed mounting of shell body has the sealing cylinder, the hydrogen injection pipe is located in the sealing cylinder, and with sealed sliding connection thereof, the inside of inner bag is equal interval and is provided with a plurality of mounting grooves, and the inside of each mounting groove is provided with hydrogen storage alloy, and a plurality of mounting grooves are connected through the intercommunication cavity intercommunication. The utility model discloses the setting of up and down buffer structure can effectively absorb and disperse energy when the device is impacted by external force, vibrates or jolts in the transportation process, alleviates the shaking and stress of inner bag, reduces the risk of damaging inner bag due to collision, and cooperates with air bag protection measures, ensures the safe use of air bag.

The utility model discloses an air tightness detection device for a solid hydrogen storage cylinder, and relates to the technical field of gas cylinder detection. The airtightness detection device for the solid hydrogen storage bottle comprises a rack used for providing a stable supporting structure; the water storage tank is arranged at the front end of the rack and is used for storing water required in the detection process and providing a liquid environment for air tightness detection; the detection table is mounted on the water storage tank in a sliding manner and is used for placing a hydrogen storage bottle to be detected; the inflating and exhausting assembly is mounted on the rack and used for inflating or exhausting the hydrogen storage bottle; the control assembly is mounted on the inspection table and used for controlling a bottle opening valve of the hydrogen storage bottle; through the arrangement of the air charging and discharging assembly and the control assembly, an operator can carry the hydrogen storage bottle in an uninflated state to the detection table or carry the hydrogen storage bottle down from the detection table, the personal injury risk caused by unforeseen circumstances such as leakage and explosion of the hydrogen storage bottle in the carrying process of the operator is greatly reduced, meanwhile, the carrying process is simplified, and the operation convenience is improved.

The invention belongs to the technical field of hydrogen storage, and particularly relates to a solid hydrogen storage tank and an explosion suppression control method thereof. The solid hydrogen storage tank comprises a tank body, at least one monitoring module, at least one explosion suppression device and a control module, the tank body comprises a tank shell and an airflow speed limiter, an inner cavity is formed in the tank shell, and the airflow speed limiter is arranged in the tank shell. The monitoring module is arranged on the peripheral wall of the tank shell and used for collecting pressure and temperature in the inner cavity. And the at least one explosion suppression device is arranged on the peripheral wall of the tank shell and can spray an explosion suppression material towards the inner cavity. The control module is connected with the monitoring module and the explosion suppression device and controls the explosion suppression device according to monitoring information sent by the monitoring module. Wherein the airflow speed limiter is connected with a hydrogen output pipeline and is used for adjusting the flow of hydrogen entering the hydrogen output pipeline according to the pressure in the inner cavity. According to the solid-state hydrogen storage tank provided by the invention, the safety level of the solid-state hydrogen storage tank is greatly improved in a mode of combining active safety defense and passive safety adjustment.

The invention discloses an integrated solid hydrogen storage and supply device and a using method thereof, and relates to the technical field of solid hydrogen storage, the integrated solid hydrogen storage and supply device comprises a heat exchange box body, the heat exchange box body is provided with a cavity used for containing a cooling medium, and the cavity is internally provided with a heat exchange cavity; a water inlet and a water outlet which are communicated to the cavity are formed in the side wall of the heat exchange box body; the cavity has a length direction, a width direction and a height direction which are mutually vertical in pairs; the hydrogen storage pipes are fixedly arranged in the cavity, the hydrogen storage pipes are distributed in multiple rows in the width direction and the height direction of the cavity, and the hydrogen storage pipes in the adjacent rows in at least one direction are arranged in a staggered mode. The hydrogen storage pipes are arranged in a staggered mode, so that the advantages of small size and large flow of an integrated device are better exerted; hydrogen is collected in a limited space to achieve certain hydrogen absorption and desorption performance, and large-scale integration and large-flow hydrogen supply can be achieved.

This utility model relates to the field of hydrogen production technology through hydrolysis of hydrogen storage materials, and more particularly to a reaction device for hydrogen production through hydrolysis of magnesium-based solid hydrogen storage materials. The device includes a reaction vessel and support rods. A feeding assembly for raw material feeding is installed on the right side of the reaction vessel. An auxiliary assembly is provided between the feeding assembly and the reaction vessel. Three sets of support rods are provided at the bottom of the reaction vessel. The feeding assembly includes a feeding hopper, which is installed on the right side wall of the reaction vessel. A rotating rod is rotatably connected inside the feeding hopper, and stirring and crushing blades are provided on the outside of the rotating rod. This utility model, on the one hand, breaks up lumpy or agglomerated magnesium-based solid hydrogen storage materials into smaller particles, increasing their contact area with water; on the other hand, it ensures thorough mixing of water and magnesium-based solid hydrogen storage materials, accelerating the hydrolysis reaction. By reducing the particle size of the magnesium-based solid hydrogen storage materials, the contact area between the material and water is greatly increased, allowing the hydrolysis reaction to proceed more fully and improving the hydrogen generation rate and yield.

The invention discloses a hydrogen desorption system and method of a magnesium-based solid hydrogen storage reaction kettle, a hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and each placement position is provided with a heat exchange coil pipe; the hydrogen desorption system comprises a hydrogen desorption part, a temperature control part and a safety protection part; the hydrogen desorption part comprises a hydrogen desorption main pipeline, a hydrogen desorption automatic switch valve is arranged on the hydrogen desorption main pipeline, and a vacuumizing pipeline is connected to the hydrogen desorption main pipeline in parallel; the temperature control part comprises an external heat-conducting oil circulating system, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline in a crossing manner, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a reaction kettle safety valve arranged on the reaction kettle, the reaction kettle safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen desorption main pipeline in a crossing mode, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The reaction kettle has the advantages that rapid and efficient hydrogen desorption of a plurality of hydrogen storage tanks in the reaction kettle is realized, and the system safety is ensured.