Automatic stacking and alternating device for magnesium-based solid hydrogen storage forming bodies

Abstract

The invention provides an automatic stacking and alternating device for magnesium-based solid hydrogen storage forming bodies. The device is arranged in a closed storage cavity at the lower end of a solid material transfer system, runs in an inert or vacuum atmosphere, and is composed of a butt joint interface and micro-area airlock unit, a secondary buffer blanking unit, a bearing and stacking unit, an automatic rotation mechanism, an anti-vibration and anti-static assembly and an atmosphere circulation purification and monitoring control unit. Through the cooperation of airlock-DBB-bypass purging-circulating purification, the O2 / H2O steady state of a cavity is smaller than or equal to 1 ppm in the filling and transposition process, the disturbance peak value is smaller than or equal to 5 ppm, and recovery is conducted within 30 s; through the mechanical constraint of slow descending, distribution and acceleration limiting, the effective falling height is smaller than or equal to 100 mm, the acceleration peak value of a bearing area is smaller than or equal to 0.5 g, and the risks of formed body pulverization and edge cracking are remarkably reduced. The device is compatible with an upper-end multi-tank rapid butt joint and atmosphere cooperative control system in rhythm, differential pressure and interlocking logic, and a continuous, safe and high-cleanliness magnesium-based solid hydrogen storage and transportation system can be constructed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydrogen energy storage and transportation and device engineering, and particularly relates to a device for automatically stacking and rotating magnesium-based solid-state hydrogen storage formed bodies (sheet-shaped, columnar, block-shaped, etc.) arranged in a closed storage cavity at the lower end of a solid-state material transfer system and a collaborative control method thereof. BACKGROUND

[0002] Magnesium-based solid-state hydrogen storage materials are attracting attention due to their abundant resources and high mass hydrogen storage density. In engineering applications, powder is often pressed into sheet-shaped, columnar, or block-shaped small bodies (hereinafter referred to as "formed bodies"). Such formed bodies are sensitive to both atmosphere and mechanics during loading and storage:

[0003] (1) Atmosphere sensitivity: Formed bodies are highly sensitive to oxygen and water. The repeated opening and closing and switching during transfer and storage can easily introduce external gas, leading to an increase in oxygen / humidity in the cavity, affecting material stability and safety in use.

[0004] (2) Mechanical sensitivity: Formed bodies are prone to pulverization or edge cracking under conditions of vibration, impact, and large drop, leading to abnormal increase in specific surface area, cycle performance degradation, and dust safety hazards.

[0005] (3) Drive and sealing problems: If the stacking and rotating mechanism in the closed storage cavity uses a through-wall dynamic seal transmission, it is difficult to balance airtightness and anti-ignition safety.

[0006] Existing automated warehousing, isolators / glove boxes, and stacking and distribution devices are mostly designed for normal pressure or general clean environments and do not systematically address the above-mentioned coupled conditions: it is difficult to maintain ppm-level low oxygen and low water in the cavity under dynamic opening and closing and position switching conditions; there is a lack of constraints on drop height, impact, and vibration acceleration; and the lack of linkage between the beat, differential pressure, and door valve timing of the upstream multi-tank interface and transfer device makes it difficult to achieve continuous, stable, and high-cleanliness process coordination. Therefore, there is an urgent need for a technical solution that operates in an inert / vacuum atmosphere, has low disturbance loading and controlled stacking and rotation, and is safely linked with the upper system. SUMMARY

[0007] The present application aims to solve the environmental degradation and pulverization risks of magnesium-based solid-state hydrogen storage formed bodies during loading and storage due to atmospheric disturbance and mechanical impact, to solve the drive and sealing problems in the closed cavity, and to achieve ppm-level O2 / H2O in the cavity under continuous opening and closing and rotation conditions, controlled loading and indexing, and coordination with the upper multi-tank interface system in terms of beat, differential pressure, and door valve timing.

[0008] To achieve the above technical purposes and effects, the present application provides the following technical solutions:

[0009] An automatic stacking and rotation device for magnesium-based solid-state hydrogen storage shaped bodies, the device is arranged in a closed storage cavity at the lower end of a solid-state material transfer system and operates in an inert or vacuum atmosphere, the device comprises:

[0010] a docking interface and micro-zone gas lock unit, the docking interface is matched with a mechanical locking mechanism through a quick connector, double valve isolation and bypass purging units are arranged on both sides of the docking interface, a gas lock hatch is arranged between the docking interface and the closed storage cavity, and annular micro-porous nozzles are arranged in the door frame annular gap of the gas lock hatch to form an inert gas curtain;

[0011] a secondary buffer and blanking unit arranged below the filling port of the docking interface, which sequentially includes a variable-angle slow descent baffle and a low-speed distribution disc;

[0012] a bearing and stacking unit, including a honeycomb or tray structure bearing magazine;

[0013] an automatic rotation mechanism and a non-penetrating drive assembly, the automatic rotation mechanism adopts a chain type circulating rotary structure or an indexing turntable structure, and all non-penetrating drive assemblies are arranged outside the closed storage cavity and transmit torque through a permanent magnet coupling structure;

[0014] a vibration and static electricity prevention assembly, including elastic vibration isolation members and damping guide shoes arranged between the bearing magazine and the carrier, and the motion control of the device adopts an S-curve or a five-segment trapezoidal velocity trajectory and limits jerk;

[0015] an atmosphere circulation and purification unit, including a reflux channel, a regenerable purification box and a circulating fan arranged in the closed storage cavity, the regenerable purification box is provided with a combination of oxygen absorbers and molecular sieve driers;

[0016] a monitoring and control unit, including pressure sensors, temperature sensors, hydrogen concentration sensors, water and oxygen sensors, differential pressure / door position sensors, position detection sensors and weighing modules;

[0017] a safety interlocking and cooperative linkage unit, configured with atmosphere threshold interlocking, position and door position interlocking, differential pressure interlocking and abnormal interlocking, and can be linked with the upper end multi-tank rapid docking and atmosphere cooperative control system in beat, differential pressure and door valve timing, and only allows opening the door and blanking operation on a single bearing station.

[0018] Further, the docking interface and micro-zone gas lock unit perform at least three rounds of "vacuum-purging" operations on the docking interface micro-zone before and after docking or disengaging, the terminal vacuum degree of each round of "vacuum-purging" operation is ≤1×10 - 2 Pa, and the access condition for opening the gas lock hatch is O2 / H2O≤1ppm in the interface micro-zone and stable differential pressure inside and outside the closed storage cavity.

[0019] Further, in the secondary buffer blanking unit, the variable-angle slow-drop baffle cooperates with the low-speed distribution disc to limit the effective falling height of the magnesium-based solid-state hydrogen storage shaped body to not more than 100 mm.

[0020] Further, in the bearing and stacking unit, the cell hole diameter is 1.05-1.25 times the outer diameter of the magnesium-based solid-state hydrogen storage shaped body, and the row distance of the bearing magazine is not less than 1.2 times the thickness of the magnesium-based solid-state hydrogen storage shaped body; the bearing surface of the bearing magazine is provided with a low-friction lining of PTFE, PI or PFA material, the inner surface roughness Ra of the lining is not more than 0.4 μm, and the orifice chamfer of the bearing magazine is R0.5-1.0 mm.

[0021] Further, in the automatic rotation mechanism and non-penetration type driving assembly, the isolation wall thickness of the permanent magnet coupling structure is 5-10 mm, and the torque output range is 20-80 N·m; the index positioning of the automatic rotation mechanism adopts a combination structure of positioning cone pin and hard limit block, and positioning verification is performed through an encoder or a Hall sensor.

[0022] Further, the anti-vibration and anti-static assembly limits jerk by motion control, so that the acceleration peak value of the bearing area is not more than 0.5g; the anti-vibration and anti-static assembly further includes an equipotential grounding structure and a conductive lining layer, so that the surface resistance of the device is maintained at 10 6 ~10 9 Ω.

[0023] Further, in the atmosphere circulation and purification unit and monitoring control unit, the atmosphere circulation air volume is configured at 3-5 times per minute based on the volume of the sealed storage cavity; the atmosphere circulation and purification unit and monitoring control unit can make the O2 / H2O in the sealed storage cavity stable at not more than 1 ppm, and when the device is opened or closed or the index is disturbed, the O2 / H2O peak value is not more than 5 ppm and can be restored to the steady state within 30 s.

[0024] Further, the safety interlocking and cooperative linkage unit can automatically execute stop, valve closing and door closing operations when any interlocking parameter exceeds the limit, and start inert gas flooding and safety guiding and draining devices; the safety interlocking and cooperative linkage unit can also record the whole process of key events such as replacement, door opening, blanking, indexing and abnormality, and realize batch tracing.

[0025] Further, the variable-angle slow-drop baffle adopts a wear-resistant low-friction lining layer, and the inclination angle of the variable-angle slow-drop baffle and the rotating speed of the low-speed distribution disc are closed-loop adjusted through a weighing module and mass flow feedback.

[0026] Further, the atmosphere circulation purification unit and the monitoring control unit avoid direct impact of the filling port, and the oxygen absorber in the renewable purification box is made of metal or alloy material.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] 1. Atmosphere disturbance is controllable. Through the combination of airlock, DBB replacement, inert gas curtain and circulation purification, the O2 / H2O in the cavity is stable at not more than 1 ppm, the disturbance peak is not more than 5 ppm and is restored within 30s under multiple opening and closing and rotation conditions, which improves the material environmental stability and use safety.

[0029] 2. Mechanical damage is inhibited. The secondary buffer feeding and the limited acceleration / limited jerk motion planning are coordinated, so that the effective falling height is not more than 100mm, and the acceleration peak of the bearing area is not more than 0.5g, which significantly reduces the risk of powdering and edge cracking of the formed body.

[0030] 3. Closed and intrinsically safe. Non-penetrating magnetic coupling drive cancels the rotary dynamic seal, which takes into account the air tightness and ignition safety.

[0031] 4. Continuous and coordinated operation. The linkage of the multi-tank interface system at the upper end in the beat, differential pressure and gate valve timing realizes continuous filling, stable rotation and low disturbance docking.

[0032] 5. Traceable and scalable. Based on the online monitoring and recording of quality-atmosphere-mechanics, batch traceability data is formed to support process optimization and large-scale application. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed in the specific implementation manner. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] The present drawing is a functional and connection relationship diagram, which is illustrative but not restrictive; the shape, relative proportion and arrangement of the components can be engineering adjusted without departing from the scope of the claims

[0035] Figure 1 The present drawing is a functional and connection relationship diagram, which is illustrative but not restrictive; the shape, relative proportion and arrangement of the components can be engineering adjusted without departing from the scope of the claims

[0036] Figure 2 The present drawing is a functional and connection relationship diagram, which is illustrative but not restrictive; the shape, relative proportion and arrangement of the components can be engineering adjusted without departing from the scope of the claims

[0037] Figure 3 The present drawing is a functional and connection relationship diagram, which is illustrative but not restrictive; the shape, relative proportion and arrangement of the components can be engineering adjusted without departing from the scope of the claims

[0038] Figure 4 Structure diagram of automatic rotation mechanism and non-penetrating drive assembly in the application

[0039] Figure 5 Structure diagram of atmosphere circulation purification and monitoring control unit in the application

[0040] The components in the drawings and their numbers are as follows:

[0041] 1, docking interface and micro-zone airlock unit, 1-1, quick connector, 1-2, mechanical locking mechanism, 1-3, airlock hatch, 1-4, annular micro-hole nozzle, 2, double-valve isolation and bypass purge unit, 2-1, main valve, 2-2, secondary valve, 2-3, bypass purge valve; 2-4, displacement interface; 3, two-stage buffer blanking unit; 3-1, variable-angle slow descent baffle, 3-2, low-speed distribution disc; 4, bearing and stacking unit; 5, automatic rotation mechanism; 5-1, circulating chain / index turntable body; 5-2, positioning taper pin; 5-3, hard stop block; 6, non-penetrating drive assembly; 6-1, external motor; 6-2, magnetic coupling sleeve; 6-3, inner driven part; 7, anti-vibration and anti-static assembly; 7-1, elastic vibration isolation pad; 7-2, damping guide shoe; 7-3, grounding copper strip / conductive lining; 8, atmosphere circulation purification unit; 8-1, circulating fan; 8-2, purification box; 8-3, backflow channel; 9, monitoring and control unit; 9-1, pressure sensor; 9-2, temperature sensor; 9-3, hydrogen concentration sensor; 9-4, water and oxygen sensor; 9-5, differential pressure / gate position sensor; 9-6, position encoder / Hall sensor; 9-7, weighing module; 9-8, controller; 10, safety interlocking and cooperative linkage unit; 11, inert flooding and safety guide device; 12, sealed storage cavity, 13, filling port. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0043] The application provides an automatic stacking and rotation device for magnesium-based solid-state hydrogen storage formed bodies, which is arranged in a sealed storage cavity (12) and operates in an inert or vacuum atmosphere, and comprises:

[0044] 1. Docking interface and micro-zone airlock unit 1: The docking end uses a quick connector 1-1 with mechanical locking, and both sides of the interface are provided with double valve isolation (DBB) and bypass purge branch 2; At least three rounds of "vacuum-purging" are performed on the micro-zone of the docking interface before and after docking / undocking. The airlock door 1-3 is arranged between the interface and the storage cavity, and the door frame annular gap is provided with an annular micro-porous nozzle 1-4 to form an inert gas curtain, which is used to reduce the transient involvement during opening and closing.

[0045] 2. Secondary buffer and feeding unit 3: A variable angle buffer baffle 3-1 and a low speed distribution disc 3-2 are arranged in sequence below the filling port 13; The adjustable inclination angle of the buffer baffle 3-1 is 10°-45°, and the rotating speed of the distribution disc 3-2 is not greater than 30 rpm, which limits the effective falling height to not greater than 100 mm through tangential sliding and uniform distribution.

[0046] 3. Bearing and stacking unit 4: The bearing magazine adopts a honeycomb / tray composite structure, the honeycomb aperture is 1.05-1.25 times the outer diameter of the shaped body, and the row distance is not less than 1.2 times the thickness of the shaped body; The bearing surface is provided with a PTFE, PI or PFA low-friction lining, the inner surface roughness Ra is not greater than 0.4 μm, and the orifice chamfer R is 0.5-1.0 mm.

[0047] 4. Automatic rotation mechanism 5 and non-penetrating drive assembly 6: The automatic stacking rotation mechanism 5 adopts a chain type circulating rotary structure or an indexing turntable structure 6-1; All drive components 5 are arranged outside the cavity, and the torque is transmitted through permanent magnet coupling through the wall, the isolation wall thickness is 5-10 mm, the output is 20-80 N·m, and the through-wall dynamic seal is avoided. Index positioning uses positioning cone pin 5-2 and hard stop block 5-3, and is verified by encoder or Hall sensor 9-6.

[0048] 5. Anti-vibration and anti-static assembly 7: Elastic vibration isolation 7-1 and damping guide shoe 7-2 are arranged between the magazine and the carrier; S-curve or five-section trapezoidal velocity trajectory is adopted for motion control and limited jerk, so that the acceleration peak value of the bearing area is not greater than 0.5g; The equipotential grounding and conductive lining 7-3 are arranged to maintain the surface resistance at 10 6 ~10 9 Ω.

[0049] 6. Atmosphere circulation and purification unit 8 and monitoring and control unit 9: The backflow channel 8-3 and the regenerable purification box 8-2 (oxygen absorber and molecular sieve desiccant combination) are arranged in the cavity, and the circulating air volume is configured at 3-5 times per minute according to the cavity volume; The sensors such as pressure 9-1, temperature 9-2, hydrogen concentration 9-3, water and oxygen 9-4, differential pressure / gate position 9-5, position encoder / Hall 9-6 and weighing 9-7 are configured to form a closed loop control, so that the O2 / H2O in the cavity is stably not greater than 1 ppm, and the opening and closing or indexing disturbance peak value is not greater than 5 ppm and is recovered within 30s.

[0050] 7. Safety Interlocks and Collaborative Linkage 10: Four-level interlocks are set for atmosphere threshold, position and door position, differential pressure and abnormalities (hydrogen / temperature / pressure); when any parameter exceeds the limit, the machine will automatically shut down, close the valve and door, and start the inert gas flooding and safety discharge device 11. It is linked with the upstream multi-tank rapid docking and atmosphere collaborative control system in terms of cycle time, differential pressure and valve timing, and only allows door opening and material unloading operations to be performed on a single carrying station.

[0051] The invention will now be further described with reference to the accompanying drawings.

[0052] I. System Overview and Connections

[0053] like Figure 1 As shown, the device is located in a sealed storage chamber at the lower end of the solid material transfer system and operates under an inert or vacuum atmosphere. The material and airflow paths are as follows: docking interface and micro-area airlock unit 1 → dual-valve isolation and bypass purging unit 2 → secondary buffer discharge unit 3 → carrying and stacking unit 4 → automatic rotation mechanism 5 (externally driven by a non-penetrating drive component 6). The chamber is circumferentially equipped with anti-vibration and anti-static components 7 and an atmosphere circulation and purification unit 8; the monitoring and control unit 9 is electrically connected to each execution / detection element and forms a safety linkage with the inert flooding and safety guide device 11.

[0054] II. Interface and Micro-zone Airlock

[0055] The docking end uses a quick-connect fitting 1-1 and a mechanical locking 1-2 to form a detachable, airtight connection. A main valve 2-1 and a secondary valve 2-2 are arranged on both sides of the interface to form a dual-valve isolation (DBB). The intervalve cavity is connected to a vacuum pump and an inert gas source via a bypass purge valve 2-3 and a replacement interface 2-4, performing a cyclic "vacuuming-inert gas replacement" process on the interface micro-area. An airlock door 1-3 is located between the interface and the storage chamber 12. An annular micro-orifice nozzle 1-4 is installed in the door frame annular gap, forming an inert gas curtain when opened / closed to reduce the entrainment of external gas. The replacement process preferably consists of at least three cycles, with the vacuum level at the end of each cycle ≤ 1×10⁻⁶. -2 Pa; Before opening the airlock, the entry conditions are that O2 / H2O ≤ 1ppm and the differential pressure inside and outside the cavity is stable.

[0056] III. Secondary and secondary buffer material feeding

[0057] The variable-angle slow-descent baffle 3-1 uses a wear-resistant, low-friction lining, and its tilt angle is electrically adjustable from 10° to 45°. The low-speed distribution disc 3-2 operates at a speed not exceeding 30 rpm, and its surface is textured to disperse tangential momentum. The phase and speed of both are regulated by the weighing module 9-8 and the mass flow feedback closed loop, causing the formed body to slide tangentially and be evenly distributed to the bearing position, limiting the effective drop height to no more than 100 mm, and suppressing cone stacking, rollover, and impact concentration.

[0058] IV. Loading and Stacking

[0059] The bearing magazine adopts a honeycomb / tray composite structure: the honeycomb aperture is 1.05-1.25 times the outer diameter of the shaped body, and the row distance is not less than 1.2 times the thickness of the shaped body; the bearing surface is covered with a PTFE, PI or PFA low-friction lining, the inner surface roughness Ra is not greater than 0.4 μm; the orifice chamfer is R0.5-1.0 mm, and a micro-step is provided to suppress rolling and edge scratches. An elastic vibration isolation pad 7-1 is provided between the magazine and the carrier, a damping guide shoe 7-2 is used for lateral guidance, and equal potential grounding is achieved through a grounding copper strip / conductive lining 7-3.

[0060] V. Automatic rotation mechanism and non-penetrating drive

[0061] The automatic rotation mechanism 5 can adopt a circulating chain or index table structure 5-1; all drive components are located outside the cavity, an external motor 6-1 drives the inner driven part 6-3 through a permanent magnet coupling sleeve 6-2, the isolation wall thickness is 5-10 mm, which can provide an output torque of 20-80 N·m, and avoids penetrating dynamic sealing. Index positioning uses positioning cone pins 5-2 and hard limit blocks 5-3, and is checked by position encoders / Hall 9-6 double redundancy to prevent half-step mispositioning and accumulated error.

[0062] VI. Anti-vibration and anti-static

[0063] Motion control uses S-curve or five-segment trapezoidal velocity trajectory and limits jerk, so that the acceleration peak of the bearing area is ≤0.5g (g is 9.81 m / s2). An elastic vibration isolation pad 7-1 and a damping guide shoe 7-2 are arranged between the magazine and the carrier to suppress structural vibration transmission; the whole system is connected to the same potential, and the conductive lining and the grounding copper strip 7-3 are penetrated, so that the surface resistance is maintained in the range of 10 6 ~10 9 Ω.

[0064] VII. Atmosphere circulation purification

[0065] The atmosphere circulation purification unit 8 is composed of a circulating fan 8-1, a purification box 8-2 and a return channel 8-3; the purification medium uses a combination of metal / alloy oxygen absorber and molecular sieve desiccant. The circulating air volume is configured at 3-5 times per minute based on the cavity volume, and the air flow organization avoids direct impact on the filling port. The control target is: under the disturbance of opening and closing or indexing, the peak value of O2 / H2O in the cavity is not greater than 5 ppm, and it is restored to a stable state of not greater than 1 ppm within 30s.

[0066] VIII. Monitoring and control and safety interlocking

[0067] The monitoring and control unit 9 is configured with pressure 9-1, temperature 9-2, hydrogen concentration 9-3, water and oxygen 9-4, differential pressure / gate position 9-5, position encoder / Hall 9-6 and weighing 9-7 sensors, and a controller 9-8 implements four-level interlocking:

[0068] (1) Atmosphere threshold interlock: O2 / H2O meets the standard to open the door and move;

[0069] (2) Position and door position interlock: not in place or not locked to prevent material falling and indexing;

[0070] (3) Differential pressure interlock: differential pressure anomaly prohibits opening the door;

[0071] (4) Abnormal interlock: any one of hydrogen / temperature / pressure exceeds the limit to immediately stop, close the valve and door, and start inert flooding and safety guide 11.

[0072] Key events (replacement, door opening, material falling, indexing, abnormality) are recorded throughout the process to achieve batch traceability.

[0073] Nine, operation method and timing (example)

[0074] (1) Docking and replacement: after mechanical locking is completed, ≥3 rounds of "vacuum-purge" are performed on the docking interface micro area, with O2 / H2O≤1 ppm and stable differential pressure as the opening airlock criterion; when the airlock is opened, the annular gas curtain is started.

[0075] (2) Filling and buffering: open the secondary buffer material falling unit; the angle of the buffer baffle and the rotation speed of the distribution disc are adjusted by weighing / mass flow closed loop; the effective falling height is controlled to be ≤100 mm; the load position is closed after reaching the set mass or material level, and the data is recorded.

[0076] (3) Indexing and rotation: the automatic rotation mechanism indexes according to S-curve / limited acceleration; IMU / encoder real-time correction ensures that the load area is ≤0.5 g; the full load position is displaced to the storage area, and the empty position is indexed to the filling port.

[0077] (4) Atmosphere maintenance and recovery: circulating fan and purification box continue to run; when disturbance causes O2 / H2O transient surge, it is restored to ≤1 ppm within 30s; if the peak value is >5 ppm or the recovery is overdue, execute stop-close door-inert flooding-guide-reposition process.

[0078] (5) Linkage and coordination: linkage with the upper multi-tank quick docking and atmosphere coordination control system in beat, differential pressure and door valve timing, only allowing a single load station to be in "open door-material falling" state, and the remaining stations to remain isolated.

[0079] Ten, examples

[0080] Example 1 (single station filling verification): In a laboratory device, honeycomb cartridges (pore diameter = 1.10 times the outer diameter of the shaped body, row spacing = 1.3 times the thickness, PFA lining, Ra ≈ 0.3 μm) were used, and the gas lock was opened after three displacements; the slow descent baffle was set at an angle of 25°, the distribution disc was rotated at 15 rpm; the effective drop height was ≤ 80 mm; the O2 / H2O steady state was ≈ 0.5 ppm, the peak value of the opening and closing disturbance was ≤ 3 ppm and recovered within 20 s; the measured peak acceleration in the load zone was ≤ 0.4 g, and no significant pulverization was observed after filling.

[0081] Example 2 (multiple stations with continuous rotation): a circulating chain mechanism with 36 stations; an external motor was used to drive through a magnetic coupling, the isolation wall was 8 mm thick and the output torque was about 45 N·m; index positioning used positioning cone pins and hard limit blocks and was checked by an encoder; the cycle time with the upper system was 8-12 s / time, only a single station was allowed to open; continuous operation for 4 h, O2 / H2O steady state ≤ 0.8 ppm, peak value of disturbance ≤ 4 ppm and recovery within 30 s; peak acceleration in the load zone ≤ 0.45 g, the shaped body remained intact.

[0082] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details and limit the present invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies, characterized in that, The device is arranged in a closed storage cavity (12) at the lower end of a solid material transfer system and operates in an inert or vacuum atmosphere, and the device comprises: The docking interface is matched with a micro-zone air lock unit (1), the docking interface is matched with a mechanical locking mechanism (1-2) through a quick connector (1-1), double valve isolation and bypass purging units (2) are arranged on both sides of the docking interface, an air lock hatch (1-3) is arranged between the docking interface and the closed storage cavity (12), and annular micro-porous nozzles (1-4) are arranged in the door frame annular gap of the air lock hatch (1-3) to form an inert gas curtain; A secondary buffer blanking unit (3) is arranged below the filling port (13) of the docking interface and comprises a variable-angle slow descending baffle (3-1) and a low-speed distribution disc (3-2) in sequence; A bearing and stacking unit (4) comprises a honeycomb or tray type bearing magazine; An automatic rotation mechanism and a non-penetrating drive assembly, the automatic rotation mechanism (5) adopts a chain type circulating rotary structure or an indexing turntable structure (5-1), and all non-penetrating drive assemblies (6) are arranged outside the closed storage cavity (12) and transmit torque through a permanent magnetic coupling structure; A vibration-proof and anti-static assembly (7) comprises elastic vibration isolation members (7-1) and damping guide shoes (7-2) arranged between the bearing magazine and the carrier, and the motion control of the device adopts an S-curve or a five-segment trapezoidal velocity trajectory and limits jerk; An atmosphere circulation and purification unit (8) comprises a reflux channel (8-3), a renewable purification box (8-2) and a circulating fan (8-1) arranged in the closed storage cavity (12), and the renewable purification box (8-2) is provided with a combination of an oxygen absorber and a molecular sieve desiccant; A monitoring and control unit (9) comprises a pressure sensor (9-1), a temperature sensor (9-2), a hydrogen concentration sensor (9-3), a water and oxygen sensor (9-4), a differential pressure / door position sensor (9-5), a position detection sensor (9-6) and a weighing module (9-7); A safety interlocking and cooperative linkage unit (10) is configured to have atmosphere threshold interlocking, position and door position interlocking, differential pressure interlocking and abnormal interlocking, and can be linked with an upper end multi-tank rapid docking and atmosphere cooperative control system in terms of beat, differential pressure and door valve timing, and only allows opening of a door and blanking operation on a single bearing station.

2. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, The docking interface and the micro-area airlock unit (1) perform at least three rounds of "vacuum-purging" operation on the docking interface micro-area before and after docking or decoupling, and the terminal vacuum degree of each round of "vacuum-purging" operation is ≤1×10 -2 Pa, and the access condition for opening the airlock cabin door is that the O2 / H2O of the interface micro-area is ≤1 ppm and the differential pressure between the inside and outside of the sealed storage cavity is stable.

3. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, In the secondary buffer blanking unit (3), the adjustable inclination angle of the variable-angle slow descending baffle (3-1) ranges from 10° to 45°, the rotating speed of the low-speed distribution disc (3-2) is not greater than 30 rpm, and the effective falling height of the magnesium-based solid hydrogen storage body is limited to not greater than 100 mm through the cooperative action of the variable-angle slow descending baffle (3-1) and the low-speed distribution disc (3-2).

4. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, The bearing and stacking unit (4) has a honeycomb aperture that is 1.05-1.25 times the outer diameter of the magnesium-based solid-state hydrogen storage formed body, and the row distance of the bearing magazine is not less than 1.2 times the thickness of the magnesium-based solid-state hydrogen storage formed body; the bearing surface of the bearing magazine is provided with a low-friction lining of PTFE, PI or PFA material, the inner surface roughness Ra of the lining is not greater than 0.4 μm, and the orifice chamfer of the bearing magazine is R0.5-1.0 mm.

5. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, In the automatic rotation mechanism (5) and the non-penetrating driving assembly (6), the isolation wall thickness of the permanent magnet coupling structure is 5-10 mm, and the torque output range is 20-80 N·m; the index positioning of the automatic rotation mechanism (5) adopts a combination structure of a positioning cone pin (5-2) and a hard limit block (5-3), and is positioned and verified by an encoder or a Hall sensor (9-6).

6. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, The anti-vibration and anti-static assembly (7) limits the jerk by motion control, so that the acceleration peak of the bearing area is not greater than 0.5g; the anti-vibration and anti-static assembly (7) further comprises an equipotential grounding structure and a conductive lining layer (7-3), so that the surface resistance of the device is maintained at 10 6 ~10 9 Ω.

7. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, In the atmosphere circulation purification unit (8) and the monitoring control unit (9), the atmosphere circulation air volume is configured at 3-5 times per minute based on the volume of the sealed storage cavity (12); the atmosphere circulation purification unit (8) and the monitoring control unit (9) can make the O2 / H2O in the sealed storage cavity stable at not more than 1 ppm, and when the device is opened or closed or the index is disturbed, the O2 / H2O peak value is not more than 5 ppm and can be restored to the steady state within 30 s.

8. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to claim 1, characterized in that, The safety interlocking and cooperative linkage unit (10) can automatically execute stop, valve closing and door closing operations when any interlocking parameter exceeds the limit, and start inert gas flooding and safety guide and exhaust device (11); the safety interlocking and cooperative linkage unit (10) can also record the whole process of key events such as replacement, door opening, material falling, indexing and abnormality, and realize batch tracing.

9. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to any one of claims 1-8, characterized in that, The variable-angle slow-descending baffle (3-1) adopts a wear-resistant low-friction lining layer, and the inclination angle of the variable-angle slow-descending baffle (3-1) and the rotation speed of the low-speed distribution disc (3-2) are closed-loop adjusted through the weighing module (9-7) and mass flow feedback.

10. The automatic stacking and indexing device for magnesium-based solid hydrogen storage shaped bodies according to any one of claims 1-8, characterized in that, The gas flow organization of the atmosphere circulation purification unit (8) and the monitoring control unit (9) avoids direct impact on the filling port, and the oxygen absorber in the renewable purification box (8-2) is a metal or alloy material.

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