246 results about "Solid hydrogen" patented technology

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 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 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 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.

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 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.

The present invention provides a method for condensing a hydrogen gas stream (10), particularly a hydrogen BOG (boil-off gas) stream, comprising at least the steps of: (a) providing a hydrogen gas stream (10), particularly a hydrogen BOG stream; (b) providing a storage tank (2) containing liquid hydrogen and solid hydrogen (H2) in coexistence (3); (c) maintaining the coexistence of the liquid hydrogen and solid hydrogen in the storage tank (2) using a heat exchanger (4); (d) supplying the hydrogen gas stream (10) provided in step (a) to the storage tank (2); and (e) condensing the hydrogen gas (10) supplied to the storage tank (2) in step (d).

The invention relates to the technical field of solid hydrogen storage, in particular to a composite solid hydrogen storage tank capable of absorbing and desorbing hydrogen simultaneously. Comprising an external tank body and an internal tank body, an external hydrogen inlet is formed in one side of the bottom of the external tank body, an external hydrogen outlet is formed in one side of the top of the external tank body, and an external heating pipe is welded to the outer side of the external tank body and connected with an external heat source inlet and an external heat source outlet; an internal hydrogen inlet is formed in the bottom of the internal tank body, an internal hydrogen outlet is formed in the top of the internal tank body, an internal heating pipe is arranged on the internal tank body, the internal heating pipe is connected with an internal heat source inlet and an internal heat source outlet, external hydrogen storage alloy is arranged between the external tank body and the internal tank body, and internal hydrogen storage alloy is arranged in the internal tank body. The heat of the external hydrogen storage alloy and the heat of the internal hydrogen storage alloy can be conducted mutually, redundant heat in the hydrogen absorption process is fully utilized, the energy consumption of the whole system is reduced, and the hydrogen absorption and desorption functions of one hydrogen storage tank can be achieved through the principles of hydrogen absorption and heat release and hydrogen desorption and heat absorption.

The invention discloses a hexagonal scandium hydrogen compound and a preparation method thereof, and the preparation method comprises the following steps: taking a borane ammine complex as a solid hydrogen source, tabletting the borane ammine complex and elemental scandium through a mold, and stacking according to'hydrogen source-scandium-hydrogen source '; loading the assembly into a CVD diamond single crystal tube with holes, and carrying out secondary wrapping with NaCl to form a sealed reaction unit; carrying out segmented pressurization / depressurization in a cubic press, electrifying and segmented heating under the condition of 800-1200 DEG C, and carrying out pressure maintaining and cooling to complete synthesis; according to the method, local high hydrogen partial pressure is established under the action of moderate high pressure and double-layer sealing, external introduction of high-pressure hydrogen is avoided, and the equipment complexity and the safety risk are reduced; the product prepared by the invention is hexagonal-phase ScH3, can stably exist at normal temperature and normal pressure, and is different from cubic-phase ScH3 which can only be synthesized under an extreme high-pressure condition and cannot be kept stable after pressure relief, XRD and structure refinement are consistent with the standard, and the process can be repeated and amplified.

The invention discloses a mobile solid hydrogen storage system using an anti-deformation bidirectional anti-vibration damping device. Wherein the water tank first panel and the water tank second panel are respectively sealed and fixed with a flange at one end of the water tank side wall through a sealing ring and a bolt; the second ends of the hydrogen storage tank bodies stacked in the radial direction are fixed to the second panel of the water tank; the first end of each hydrogen storage tank body is fixed with the hydrogen storage tank connecting base, and the first end of each buffer spring is fixed with the hydrogen storage tank connecting base through a spring welding column; the second ends of the buffer springs are connected with the first panel of the water tank in two staggered connection modes. In the transportation process of the solid hydrogen storage system, when vibration is caused by heat exchange hydrogen charging and discharging, the two connection modes can generate different pulling forces and pushing forces on the box body, the vibration in the transportation and operation process and box body deformation caused by water pressure change can be effectively reduced, and the leakage probability of the circulating water heat exchange system is greatly reduced.

The invention relates to an RE-Mg-Ni-based hydrogen storage alloy containing double rare earth elements and a preparation method of the RE-Mg-Ni-based hydrogen storage alloy, belongs to the technical field of solid hydrogen storage alloy materials, and solves at least one of the problems that an existing Mg-based hydrogen storage alloy hydride is high in hydrogen desorption activation energy, slow in hydrogen absorption and desorption dynamics and low in hydrogen storage capacity. The chemical formula of the hydrogen storage alloy is Mg96-xLa4-yYyNix, x is greater than or equal to 2 and less than or equal to 6, and y is greater than or equal to 1 and less than or equal to 3; the grain size of the hydrogen storage alloy is 0.81-1.69 [mu] m, and the volume fraction of a precipitated phase is 20-40%. The elements La, Ni and Y are adopted to replace the element Mg, the grain size is refined, the crystal defect of alloy particles is improved, the phase structure is improved, the hydrogen desorption enthalpy change and the hydrogen absorption and desorption temperature are reduced, and the hydrogen absorption and desorption rate is increased; the alloy ingot is subjected to rapid quenching and recrystallization annealing treatment, so that the alloy grain structure is further refined, precipitation and uniform distribution of a phase state are promoted, more channels and nucleation sites are provided for hydrogen atoms to enter the alloy, the hydrogen absorption and desorption rate is increased, and the alloy hydride activation energy is further reduced.

The invention relates to the technical field of solid hydrogen storage, in particular to a method and system for judging the hardening degree of a pulverized solid hydrogen storage alloy material. The method comprises the following steps of: observing a morphology picture of the lower part of the device in a cyclic hydrogen charging and discharging experiment reaction process, simultaneously detecting strain at a connecting line of centers of two integral flanges in a symmetrical first shooting unit, and finding that when a newly added microcrack appears, a corresponding strain sudden increase point 1; when the newly added microcracks are further thickened, a strain sudden increase point 2 is formed; when the cracks are completely closed after the primary circulating hydrogen charging and discharging experiment, the particles are further hardened, and at the moment, the corresponding strain sudden increase point 3 is obtained; therefore, an obvious corresponding relation between fracture evolution and strain growth can be found, and the strain accumulation condition of the reaction bed can be accurately evaluated by monitoring fracture change.

The present invention belongs to the field of solid-state hydrogen storage technology, and in particular, relates to a solid-state hydrogen storage tank. The solid-state hydrogen storage tank described in the technology includes a tank body, a hydrogen outlet is provided on the top of the tank body, the interior of the tank body includes a storage area for storing hydrogen storage materials, and the storage area is filled with hydrogen storage materials; the lower half of the tank body is a funnel structure, and the lower end of the funnel structure is a hydrogen inlet; a blocking portion is provided at the hydrogen outlet end of the hydrogen inlet to prevent the hydrogen storage material in the storage area from flowing out. The present invention can move the hydrogen storage material during the hydrogen inlet process, without considering whether the hydrogen storage material is magnetic or not, and is not restricted by the magnetic field environment.

The application discloses a horizontal solid hydrogen storage device, which comprises a horizontal tank body and a conical hydrogen storage cylinder, the hydrogen storage cylinder is closed and fixed on the cylinder wall of the horizontal tank body through a distribution plate and a collecting plate, the distribution plate and the collecting plate divide the horizontal tank body into a heat exchange medium inlet box, a hydrogen charging and discharging cavity and a heat exchange medium outlet box, the heat exchange medium inlet box and the heat exchange medium outlet box are communicated through a heat exchange pipe, the hydrogen storage cylinder is filled with solid hydrogen storage material, the heat exchange pipe is embedded in the solid hydrogen storage material, the horizontal tank body is provided with a hydrogen inlet and a hydrogen outlet, the distribution plate and the collecting plate between the outermost heat exchange pipe in the hydrogen storage cylinder and the inner wall of the hydrogen storage cylinder are provided with expansion rings, the distribution plate and the collecting plate in the hydrogen charging and discharging cavity are also provided with expansion rings, the hydrogen storage cylinder is provided with a hydrogen storage material inlet pipe and a hydrogen storage material outlet pipe, the hydrogen storage cylinder is provided with a hydrogen hole and more than two shrink rings on the cylinder wall, and the application simultaneously solves the heat and volume compensation problems in the hydrogen charging and discharging process and improves the reliability of the device.

The invention provides a resistance self-heating type solid hydrogen storage reactor, which belongs to the technical field of hydrogen energy storage and comprises a solid hydrogen storage component, a heat management component and an electric heating component. The porous solid hydrogen storage material is a magnesium-based composite material doped with coal ash and slag, has a porous structure and intrinsic conductivity, and realizes rapid and uniform spontaneous heating through a Joule effect; the heat exchange plates and the hydrogen storage materials are alternately distributed, a circulating pump drives a heat exchange medium and a phase change material storage tank to form closed-loop heat management, and heat recovery in the hydrogen storage stage and heat supply in the hydrogen desorption stage are achieved; the electric heating unit supplements Joule heat through an external power supply, and the operation state is controlled in real time in combination with the temperature regulation and control module. The problems of thermal response lag, uneven temperature and high energy consumption of traditional solid hydrogen storage are solved, the hydrogen storage / desorption rate, the cycle stability and the energy utilization efficiency are remarkably improved, and the method is suitable for large-scale long-period hydrogen storage of renewable energy sources.

This invention discloses a solid hydrogen storage device, comprising a heat exchange medium inlet box, a hydrogen distribution and collection box, a hydrogen storage box, and a heat exchange medium outlet box, all housed within a vertical tank. A fixed central shaft is installed inside the hydrogen storage box, with two rotating partitions on the shaft dividing the storage box into a hydrogen storage material storage area and a non-hydrogen storage material storage area. Within the hydrogen storage material storage area, a rotation start-point limiting block is provided on the inner wall of the storage box near each rotating partition. 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 has hydrogen storage material inlet and outlet pipes. The hydrogen distribution and collection box is connected to the storage box via a hydrogen channel hole. The heat exchange medium inlet box and the heat exchange medium outlet box are connected by heat exchange pipes embedded in the solid hydrogen storage material. This invention simultaneously solves the heat and volume compensation problems during hydrogen charging and discharging, improving the reliability of the device.