Hydrogen storage tank with stirring function and hydrogen storage device

Abstract

The invention relates to the technical field of hydrogen storage devices, in particular to a hydrogen storage tank with a stirring function and a hydrogen storage device. The two gas guide pipes are used in the hydrogen storage tank, and overall stirring of hydrogen storage alloy particles is achieved. Through threaded connection between the threaded rod and the fixed partition plate, the hydrogen storage alloy particles in the threaded rod are stirred up and down by the gas guide pipe and the stirring blade, and stirring plates do not need to be mounted on different layers, so that the space can be saved, the design of the hydrogen storage tank is more compact, and the complexity of the internal structure is reduced; meanwhile, maintenance and replacement are easier, the number of stirring plates needing to be maintained is reduced, and the maintenance cost and complexity are reduced. And through cooperative use of a driving bevel gear and a driven bevel gear, a gas guide pipe and a stirring blade rotate and stir while moving up and down along with a threaded rod, so that the stirring effect is further improved, the hydrogen can fully react with the hydrogen storage alloy particles, and the storage amount of the hydrogen is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage devices, and in particular to a hydrogen storage tank and a hydrogen storage device with a stirring function. Background Art

[0002] At present, hydrogen storage methods can be divided into three types according to the storage state: gaseous high-pressure storage method, low-temperature liquid storage method and alloy solid storage method. Gaseous storage requires high-pressure gas cylinders, which are prone to leakage and even cause the risk of violent explosion. Liquid storage requires higher energy to liquefy it. Solid-state storage is safer than the other two methods.

[0003] Solid-state hydrogen storage is achieved by reacting hydrogen with hydrogen storage alloy particles to form relatively mild solid compounds at room temperature and pressure, which is convenient for subsequent storage and transportation. When hydrogen is needed, the solid compound can be heated to release hydrogen stably and continuously. At present, when hydrogen is stored, hydrogen is filled into the hydrogen storage tank from the tank mouth of the hydrogen storage tank, and then the hydrogen flows to the hydrogen storage alloy particles in the hydrogen storage tank under the action of a certain hydrogen pressure, and reacts and adsorbs with them chemically. However, since the hydrogen storage alloy particles in the hydrogen storage tank are directly stacked in the hydrogen storage tank and the gaps between the particles are small, it is often difficult to achieve the purpose of rapid hydrogen filling by relying solely on the hydrogen filling pressure to drive the hydrogen to penetrate from the gaps between the particles to the bottom of the tank. Moreover, as the hydrogen filling pressure decreases gradually downward, the hydrogen loses its power, resulting in poor fluidity, making it difficult for the particles at the bottom to fully contact with the hydrogen, which in turn leads to low hydrogen storage efficiency.

[0004] In order to solve the problem of uneven contact between hydrogen and particles during hydrogen storage, stirring and mixing is usually used to improve the adequacy of mixed contact. The commonly used stirring method at this stage is to install a stirring impeller in the hydrogen storage tank, and increase the contact frequency and contact area between the particles and hydrogen through the stirring and tumbling action of the stirring impeller, so as to improve the hydrogen storage efficiency. However, in actual use, it was found that although a stirring impeller was used, the hydrogen filling pressure was still relied on to push the hydrogen to the particles, that is, only the particles at the top layer could be in more sufficient contact with the hydrogen. Although under the stirring and tumbling action of the impeller, the particles in the hydrogen storage tank can be converted to the top layer in turn. However, the efficiency of this conversion is low, and at the same time, it is often difficult for the impeller to stir up the particles at the bottom of the hydrogen storage tank, so it is difficult for these particles to achieve sufficient contact with hydrogen, which leads to a decrease in the overall hydrogen storage efficiency.

[0005] This shows that the current hydrogen storage mixing equipment needs to be improved to meet the current requirements of efficient hydrogen storage. Summary of the invention

[0006] In order to avoid and overcome the technical problems existing in the prior art, the present invention provides a hydrogen storage tank and a hydrogen storage device with a stirring function. The hydrogen storage tank of the present invention can fully mix and contact hydrogen with hydrogen storage alloy particles, thereby improving hydrogen storage efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A hydrogen storage tank with a stirring function comprises a fixed partition installed in the hydrogen storage tank, a threaded rod with a hollow shape and an open top end is threadedly connected to the fixed partition, and the threaded rod is coaxially arranged with the hydrogen storage tank; a rotating cylinder with a top end sealed is coaxially rotatably sealed on the tank cover of the hydrogen storage tank, the bottom of the rotating cylinder extends to the top end of the threaded rod, and an axially extending guide groove is provided on the barrel body of the rotating cylinder located in the hydrogen storage tank; the top end of the threaded rod is coaxially inserted into the barrel cavity of the rotating drum, and a positioning pin installed at the top end of the threaded rod is slidably inserted in the guide groove to drive the threaded rod to rotate and move upward; a stirring impeller is rotatably installed on the side wall of the bottom end of the threaded rod, the rotation axis of the stirring impeller and the thread axis intersect each other perpendicularly, and a transmission component that can synchronously convert the thread rotation motion of the threaded rod into the rotation motion of the stirring impeller is installed in the rod cavity of the threaded rod; a cavity is formed inside the stirring impeller, and an air outlet hole that is connected to the cavity is provided on its outer surface, and a gas guide component that can input hydrogen from the outside into the cavity is installed in the rod cavity of the threaded rod.

[0009] As a further solution of the present invention: the transmission assembly includes an elastic telescopic rod with a fixed end fixedly installed at the tank mouth of the hydrogen storage tank, the telescopic end of the elastic telescopic rod is coaxially inserted in the barrel cavity of the rotating cylinder and extends to the stirring impeller in the threaded rod cavity, and a driving bevel gear that gradually expands downward is coaxially fixedly installed on the telescopic end; a driven bevel gear is coaxially fixedly connected to the stirring shaft of the stirring impeller extending into the threaded rod cavity, and the driven bevel gear and the driving bevel gear are rotatably engaged with each other.

[0010] As a further solution of the present invention: the air guide component includes a top cover installed on the top of the rotating cylinder, the top cover includes an upper cover and a lower cover that are buckled together, and the upper cover is fixed on the tank cover; an upper annular groove coaxially arranged with the rotating cylinder is provided on the lower end surface of the upper cover, and a lower annular groove coaxially arranged with the rotating cylinder is provided on the upper end surface of the annular lower cover; the lower cover is coaxially embedded in the upper annular groove, and it can be sealed and rotated in the upper annular groove, and the lower cover is also coaxially sealed and covered on the rotating cylinder; the upper annular groove and the lower annular groove cooperate with each other to form a sealed air guide cavity, and the upper annular groove is also sealed and connected to a closable air inlet pipe for receiving external hydrogen; a gas guide telescopic tube that is connected to the gas guide cavity is fixedly connected on the lower end surface of the lower cover, and the telescopic direction of the gas guide telescopic tube is parallel to the axial direction of the rotating cylinder; the telescopic end of the gas guide telescopic tube extends to the stirring impeller in the tube cavity of the threaded tube, and is connected to the cavity of the stirring impeller.

[0011] As a further solution of the present invention: the stirring impeller includes an air duct rotatably mounted on a threaded rod, the air duct constituting the stirring shaft; the air inlet end of the air duct is located in the rod cavity of the threaded rod, and forms a rotating seal with the telescopic end of the air duct telescopic tube; the air outlet end of the air duct extends to the inner wall of the hydrogen storage tank, and each air outlet hole is opened on the tube body located outside the threaded tube rod cavity, and a plurality of stirring blades are also installed on the tube body.

[0012] As a further solution of the present invention: each stirring blade is in a rectangular shape, and its length direction is parallel to the axial direction of the air duct; each stirring blade is evenly arranged around the circumference of the air duct, and each air outlet between adjacent stirring blades is evenly arranged in sequence along the axial direction of the air duct.

[0013] As a further solution of the present invention: the telescopic end of the telescopic air guide tube is connected to a ventilation elbow, the ventilation elbow is bent downward and its air outlet end forms a horizontal section coaxial with the air guide tube, the horizontal section is inserted into the air guide tube, and forms a rotary seal with the air guide tube.

[0014] As a further solution of the present invention: the fixed end of the elastic telescopic rod is fixedly mounted on the lower end surface of the upper cover.

[0015] As a further solution of the present invention: a driven gear is coaxially fixedly connected to the body of the rotating cylinder extending out of the tank cover, a driving gear matched with the driven wheel gear transmission is rotatably installed on the tank cover, and the driving gear can be driven by an external driving motor.

[0016] A hydrogen storage device, which uses the above-mentioned hydrogen storage tank with a stirring function, includes a storage tank container, a hydrogen storage tank for placing multiple hydrogen storage tanks is formed in the storage tank container, and a honeycomb-shaped vibration isolation pad is installed in the hydrogen storage tank; each honeycomb hole opened on the vibration isolation pad constitutes a receiving cavity for accommodating the hydrogen storage tank.

[0017] As a further solution of the present invention: a plurality of guide countersunk holes are opened on the groove wall of the storage tank groove, and a reset spring is fixedly installed at the bottom of each guide countersunk hole, and a top pin that can abut against the outer wall of the hydrogen storage tank is fixedly installed at the other end of the reset spring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By using two air ducts inside the hydrogen storage tank, the overall stirring of the hydrogen storage alloy particles is achieved. Through the threaded connection between the threaded rod and the fixed partition, the air duct and the stirring blades can stir the hydrogen storage alloy particles in the threaded rod up and down. There is no need to install stirring plates on different levels, which can save space, make the design of the hydrogen storage tank more compact, and reduce the complexity of the internal structure; at the same time, it is easier to maintain and replace, reducing the number of stirring plates that need to be maintained, and reducing maintenance costs and complexity. Then, through the coordinated use of the active bevel gear and the driven bevel gear, the air duct and the stirring blades can be stirred while rotating as the threaded rod moves up and down, thereby further improving the stirring effect and allowing hydrogen to fully react with the hydrogen storage alloy particles, thereby increasing the storage capacity of hydrogen and improving the practical value of the device.

[0020] 2. Through the coordinated use of the air delivery pipe, air guide pipe, stirring blade and air outlet, the stirring blade can deliver hydrogen into the hydrogen storage alloy particles during the flipping and stirring process, so that the hydrogen reacts with the hydrogen storage alloy. The air outlet array is opened on the surface between the air guide pipe and each stirring blade, and one end of the air guide pipe and the stirring blade extends to the edge of the hydrogen storage tank, which can ensure that the hydrogen is evenly delivered to the alloy particle pile, avoiding gas accumulation in the tank, thereby optimizing the distribution of hydrogen. Since hydrogen can directly enter the alloy particle layer, this design can significantly increase the absorption rate of hydrogen and shorten the hydrogen charging time.

[0021] 3. Through the coordinated use of vibration isolation pads, storage tank troughs and hydrogen storage tanks, the hexagonal prism-shaped hydrogen storage tanks are formed into a honeycomb shape. The honeycomb structure can more effectively utilize the internal space of the hydrogen storage device. Compared with the traditional cylindrical hydrogen storage tank, the honeycomb structure reduces the gap between the tank bodies, reduces the volume and floor space of the hydrogen storage device, and helps to increase the amount of hydrogen stored per unit volume. The vibration isolation pads are elastically isolated between adjacent hydrogen storage tanks, effectively reducing the collision between adjacent hydrogen storage tanks. Through the use of reset springs, elastic vibration reduction is provided for the hydrogen storage device during use or transportation, reducing the collision between the hydrogen storage tank and the inner wall of the storage tank container, so that the hydrogen storage device has excellent structural stability and pressure bearing capacity. At the same time, through the retractable top pin, the interior of the storage tank trough can also adapt to hydrogen storage tanks of other shapes, improving the flexibility of the use of the storage tank container. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal cross-sectional structure of the hydrogen storage tank in the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the hydrogen storage tank and the threaded rod in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the bevel gear in the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the top cover in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the hydrogen storage device in the present invention.

[0028] Figure 7 It is a schematic diagram of the assembly structure of the hydrogen storage tank and the storage tank container in the present invention.

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the guide counterbore in the present invention.

[0030] In the figure: 1, storage tank container; 11, storage tank slot; 12, vibration isolation pad; 13, guide countersunk hole; 14, return spring; 15, ejector pin; 2, hydrogen storage tank; 21, tank cover; 22, fixing rod; 3, stirring assembly; 31, rotating cylinder; 311, driven gear; 312, driving gear; 313, guide groove; 32, threaded rod; 321, positioning pin; 320, stirring impeller; 322, air guide pipe; 3221. air outlet; 3222. stirring blade; 33. fixed partition; 34. transmission assembly; 341. driven bevel gear; 342. elastic telescopic rod; 343. driving bevel gear; 4. air guide assembly; 41. top cover; 411. upper cover; 4111. upper annular groove; 4112. air inlet pipe; 412. lower cover; 4121. lower annular groove; 42. air guide telescopic pipe; 43. ventilation elbow. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] refer to Figures 1 to 8 As shown, the preferred embodiments of the present invention are specifically described as follows:

[0033] A honeycomb solid-state hydrogen storage device includes a storage tank container 1, a storage tank tank 11 is provided on the upper surface of the storage tank container 1, and a hydrogen storage tank 2 is movably connected inside the storage tank tank 11. The hydrogen storage tank 2 has a hexagonal prism shape, and a vibration isolation pad 12 adapted thereto is correspondingly arranged in a honeycomb shape, so that when all hydrogen storage tanks 2 are placed in the storage tank tank 11, the storage tank tank 11 presents a honeycomb shape.

[0034] Compared with the prior art, the honeycomb structure can more effectively utilize the internal space of the storage tank container 1. Compared with the traditional cylindrical hydrogen storage tank 2, the honeycomb structure reduces the gap between the tank bodies. At the same time, the vibration isolation pad 12 elastically blocks between adjacent hydrogen storage tanks 2, effectively reducing the collision between adjacent hydrogen storage tanks 2, reducing vibration of the hydrogen storage device during use or transportation, and making it have excellent structural stability and pressure-bearing capacity.

[0035] During use, the hydrogen storage tank 2 will cause temperature changes due to the absorption and release of hydrogen, resulting in the tank body temperature being too high. Therefore, a water-cooled heat pipe is installed inside the vibration isolation pad 12. The water-cooled heat pipe can conduct and dissipate heat, effectively reducing and controlling the temperature of the hydrogen storage tank 2, thereby preventing the hydrogen storage tank 2 from being damaged or affecting its performance due to excessive temperature.

[0036] A guide countersunk hole 13 is provided on the inner wall of the storage tank groove 11, and a reset spring 14 is coaxially fixedly connected to the bottom of the guide countersunk hole 13. A push pin 15 is fixedly connected to one end of the reset spring 14 close to the hydrogen storage tank 2, and the front end of the push pin 15 extends out of the guide countersunk hole 13 when the reset spring 14 is not under force, so as to provide a circumferential clamping force for the hydrogen storage tank 2 subsequently.

[0037] The stirring assembly 3 includes a rotating cylinder 31, which is coaxially inserted into the hydrogen storage tank 2 from the top of the hydrogen storage tank 2 and forms a coaxial rotating seal with the hydrogen storage tank 2 to prevent hydrogen from overflowing from the rotating gap between the tank mouth of the hydrogen storage tank 2 and the rotating cylinder 31, thereby improving the safety of the device.

[0038] A fixed partition 33 is provided below the rotating cylinder 31 in the hydrogen storage tank 2. The fixed partition 33 is fixedly connected to the inner wall of the hydrogen storage tank 2, and the fixed partition 33 divides the hydrogen storage tank 2 into two parts, the upper part is used to install some operating structures, and the lower part is used to store hydrogen storage alloy particles. A threaded hole coaxially arranged with the rotating cylinder 31 is provided on the fixed partition 33, and a threaded rod 32 is threadedly connected in the threaded hole, and the bottom of the threaded rod 32 extends to the bottom of the hydrogen storage tank 2. The top of the threaded rod 32 is coaxially inserted into the barrel cavity of the rotating cylinder 31, and it forms a clearance fit with the barrel cavity of the rotating cylinder 31.

[0039] A guide groove 313 is provided on the wall of the rotating cylinder 31, and the guide groove 313 is arranged on the rotating cylinder 31 along the axial diffraction of the rotating cylinder 31. At the same time, a positioning pin 321 is fixedly installed on the side of the top of the threaded rod 32, and the axial direction of the positioning pin 321 coincides with the radial direction of the threaded rod 32 at its position. The positioning pin 321 is inserted into the guide groove 313, so that when the rotating cylinder 31 rotates, the power is transmitted to the threaded rod 32 under the force conduction of the positioning pin 321, and at the same time, under the action of the threaded hole, the threaded rod 32 is made to rotate coaxially with the rotating cylinder 31, and the threaded rod 32 moves axially in the hydrogen storage tank 2.

[0040] A driven gear 311 is coaxially fixed to the body of the rotating cylinder 31 located outside the hydrogen storage tank 2, and a driving gear 312 is installed beside the rotating cylinder 31. The driving gear 312 is rotatably installed on the tank cover 21 of the hydrogen storage tank 2, and the driving gear 312 is in transmission cooperation with the driven gear 311. When the rotating cylinder 31 needs to rotate, a driving motor is externally connected to the driving gear 312, and the driving motor drives the driving gear 312 to rotate, and the driving gear 312 transmits power to the driven gear 311, thereby driving the rotating cylinder 31 to rotate.

[0041] A top cover 41 is coaxially sealed on the top of the rotating cylinder 31. The top cover 41 is divided into a lower cover 412 and an upper cover 411, and the upper cover 411 is fixedly mounted on the tank cover 21 through a fixing rod 22. The upper cover 411 is cylindrical and coaxially fixedly mounted on the top of the hydrogen storage tank 2. At the same time, an upper annular groove 4111 is coaxially opened on the lower end surface of the upper cover 411. The lower cover 412 is annular, and a lower annular groove 4121 is coaxially opened on the upper annular surface of the lower cover 412. The lower cover 412 can be coaxially embedded in the upper annular groove 4111, and the upper annular groove 4111 and the lower annular groove 4121 are matched with each other to form a sealed air guide cavity, provided that the lower cover 412 and the upper cover 411 are mounted together through a rotary seal, and at the same time, the lower cover 412 is sealed and fixedly covered on the top of the rotating cylinder 31.

[0042] A gas guide assembly 4 is also installed under the lower cover 412, specifically: a gas guide telescopic tube 42 is installed on the lower annular surface of the lower cover 412, which is sealed and connected to the lower annular groove 4121. The gas guide telescopic tube 42 extends axially along the rotating cylinder 31, passes through the cylinder cavity of the rotating cylinder 31, and is inserted into the hollow threaded rod 32, and the top end of the threaded rod 32 is open and the bottom end is sealed. There are two gas guide telescopic tubes 42, which are symmetrically arranged in the rod cavity of the threaded rod 32 with the axis of the threaded rod 32 as the symmetry axis. The gas source on the upper cover 411 that provides hydrogen gas from the outside is connected to each other, and the axially telescopic gas guide telescopic tube 42 can transport hydrogen gas to the bottom of the threaded rod 32 when the threaded rod 32 moves axially.

[0043] Two sets of stirring impellers 320 are installed in the bottom rod cavity of the threaded rod 32. The stirring impeller 320 includes an air guide tube 322 that penetrates the rod wall of the threaded rod 32 and is rotatably installed on the threaded rod 32. The rotation axis of the air guide tube 322 coincides with the radial direction of the threaded rod 32 at its position, and the tube cavity of the air guide tube 322 constitutes an air guide cavity. The air guide tube 322 and the air guide telescopic tube 42 are connected to each other through the ventilation elbow 43. The ventilation tube and the air guide telescopic tube 42 are fixedly connected to each other, and the air inlet end of the air guide tube 322 is rotationally sealed with each other. At the same time, the air guide tube 322 and the threaded tube are also rotationally sealed to avoid hydrogen leakage.

[0044] Four stirring blades 3222 are installed on the tube body of the air guide tube 322 located outside the threaded rod 32, and each stirring blade 3222 is evenly arranged in sequence around the circumference of the air guide tube 322. Each stirring blade 3222 is a rectangular parallelepiped, and its length direction is parallel to the axial direction of the air guide tube 322.

[0045] An air outlet hole 3221 is provided on the tube body of the air guide tube 322 located outside the threaded rod 32, and the end of the air guide tube 322 on this side is a closed end, and the air outlet holes 3221 are evenly distributed on the tube body of the air guide tube 322, so that the air guide tube 322 can spray hydrogen around it.

[0046] A driven bevel gear 341 is coaxially fixed to the air guide tube 322 located in the rod cavity of the threaded rod 32, and a driving bevel gear 343 is coaxially fixed to the bottom end of the elastic telescopic rod 342 coaxially installed on the lower end surface of the upper cover 411, and the driving bevel gear 343 is transmission-connected to the driven bevel gears 341 on both sides thereof. The driving bevel gear 343, the driven bevel gear 341 and the elastic telescopic rod 342 constitute a transmission assembly 34 for driving the stirring impeller 320 to rotate.

[0047] The elastic telescopic rod 342 and the air guide telescopic tube 42 used in the present invention can move synchronously up and down with the threaded rod 32. When the elastic telescopic rod 342 is extended and retracted along the axial direction of the threaded rod 32, it will not rotate, thereby ensuring that the active bevel gear 343 does not rotate, thereby transmitting the rotation of the threaded rod 32 to the driven bevel gear 341 to drive the air guide tube 322 to rotate. When the air guide telescopic tube 42 is extended and retracted along the axial direction of the threaded rod 32, the various telescopic joints do not rotate with each other, and it is also a rotary dynamic seal to avoid air leakage when the length is shortened.

[0048] The present invention can ensure that hydrogen is evenly delivered to the alloy particle pile, avoid gas accumulation in the tank, and thus optimize the distribution of hydrogen. Since hydrogen can directly enter the alloy particle layer, this design can significantly increase the absorption speed of hydrogen and shorten the hydrogen charging time.

[0049] Working principle of the present invention:

[0050] In the initial state, the air guide pipe 322 is located at the bottom end of the hydrogen storage tank 2 , and the positioning pin 321 is located at the bottom of the guide groove 313 .

[0051] An external hydrogen storage device is used to communicate with the air inlet pipe 4112 equipped with a switch valve to fill the air guide cavity with hydrogen. The hydrogen flows along the air guide telescopic pipe 42, the ventilation elbow 43 and the air guide pipe 322, and enters the bottom of the hydrogen storage tank 2 from the air outlet 3221 to react with the hydrogen storage alloy particles at the bottom of the tank. After a period of hydrogen filling, an external drive motor is used to drive the driving gear 312 to rotate, and the driving gear 312 transmits power to the driven gear 311, and the driven gear 311 drives the rotating cylinder 31 to rotate. At this time, the rotating cylinder 31 transmits power to the threaded rod 32, and the threaded rod 32 moves upward along the axial direction under the cooperation of the positioning pin 321 and the fixed partition 33. As the threaded rod 32 rotates and rises synchronously with the rotating cylinder 31, the active bevel gear 343, under the pull of the retraction force of the elastic telescopic rod 342, meshes with the driven bevel gears 341 on both sides of its bottom to drive the stirring blades 3222 on the air guide tube 322 to rotate, stirring the hydrogen storage alloy particles to improve the mixing uniformity of hydrogen and the hydrogen storage alloy particles.

[0052] When the threaded rod 32 reaches the highest point, the threaded rod 32 is rotated and lowered by driving the motor in reverse. At this time, the active bevel gear 343 is always in transmission meshing with the two driven bevel gears 341. Under the downward pressure of the driven bevel gear 341, the elastic telescopic rod 342 is stretched, and the upward retraction force of the elastic telescopic rod 342 tightens the active bevel gear 343 upward to improve the meshing transmission tightness of the two active bevel gears 343 and the two driven bevel gears 341. Under the cooperation of the active bevel gear 343 and the two driven bevel gears 341, the hydrogen storage alloy particles are stirred again by the synchronous revolution and rotation. During the repeated lifting and lowering process of the threaded rod 32, hydrogen continuously flows out of the air outlet 3221. When the threaded rod 32 revolves, the stirring blade 3222 can rotate again, so that the hydrogen storage alloy particles and hydrogen are fully mixed, and the uniformity of the mixing is improved at the same time.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydrogen storage tank with a stirring function, characterized in that: The invention comprises a fixed partition (33) installed in a hydrogen storage tank (2), a threaded rod (32) having a hollow interior and an open top end being threadedly connected to the fixed partition (33), and the threaded rod (32) being coaxially arranged with the hydrogen storage tank (2); a rotating cylinder (31) having a sealed top end being coaxially rotatably sealed and installed on a tank cover (21) of the hydrogen storage tank (2), the bottom of the rotating cylinder (31) extending to the top end of the threaded rod (32), and an axially extending guide groove (313) being provided on the body of the rotating cylinder (31) located in the hydrogen storage tank (2); the top end of the threaded rod (32) being coaxially inserted into the cylinder cavity of the rotating drum, and a positioning pin (321) installed at the top end of the threaded rod (32) slidingly moves the rotating cylinder (31) to the top end of the rotating cylinder (31); Inserted in the guide groove (313), the threaded rod (32) is driven to rotate and move upward; a stirring impeller (320) is rotatably mounted on the side wall of the bottom end of the threaded rod (32), the rotation axis of the stirring impeller (320) and the thread axis intersect each other perpendicularly, and a transmission component (34) is installed in the rod cavity of the threaded rod (32) and can synchronously convert the thread rotation movement of the threaded rod (32) into the rotation movement of the stirring impeller (320); a cavity is formed inside the stirring impeller (320), and an air outlet (3221) connected to the cavity is opened on the outer surface of the stirring impeller (32), and a gas guide component (4) is installed in the rod cavity of the threaded rod (32) and can input hydrogen from the outside into the cavity.

2. A hydrogen storage tank with stirring function according to claim 1, characterized in that: The transmission assembly (34) comprises an elastic telescopic rod (342) whose fixed end is fixedly mounted at the tank mouth of the hydrogen storage tank (2); the telescopic end of the elastic telescopic rod (342) is coaxially inserted into the cylinder cavity of the rotating cylinder (31) and extends to the stirring impeller (320) in the rod cavity of the threaded rod (32); and a driving bevel gear (343) which gradually expands downward is coaxially fixedly mounted on the telescopic end; a driven bevel gear (341) is coaxially fixedly mounted on the stirring shaft of the stirring impeller (320) extending into the rod cavity of the threaded rod (32); and the driven bevel gear (341) and the driving bevel gear (343) are rotatably meshed with each other.

3. A hydrogen storage tank with stirring function according to claim 2, characterized in that: The air guide assembly (4) comprises a top cover (41) mounted on the top of the rotating cylinder (31), the top cover (41) comprising an upper cover (411) and a lower cover (412) which are buckled together, and the upper cover (411) is fixed on the tank cover (21); an upper annular groove (4111) coaxially arranged with the rotating cylinder (31) is formed on the lower end surface of the upper cover (411), and a lower annular groove (4121) coaxially arranged with the rotating cylinder (31) is formed on the upper end surface of the annular lower cover (412); the lower cover (412) is coaxially embedded in the upper annular groove (4111), and can be sealed and rotated in the upper annular groove (4111), and the lower cover (412) is also coaxially embedded in the upper annular groove (4111). 2) a coaxial sealing cover is also assembled on the rotating cylinder (31); the upper annular groove (4111) and the lower annular groove (4121) cooperate with each other to form a sealed air guide cavity, and the upper annular groove (4111) is also sealedly connected to a closable air inlet pipe (4112) for receiving external hydrogen; a gas guide telescopic tube (42) communicating with the gas guide cavity is fixedly connected to the lower end surface of the lower cover (412), and the telescopic direction of the gas guide telescopic tube (42) is parallel to the axial direction of the rotating cylinder (31); the telescopic end of the gas guide telescopic tube (42) extends in the tube cavity of the threaded tube to the stirring impeller (320), and is communicated with the cavity of the stirring impeller (320).

4. A hydrogen storage tank with stirring function according to any one of claims 1 to 3, characterized in that: The stirring impeller (320) comprises an air guide tube (322) rotatably mounted on a threaded rod (32), the air guide tube (322) constituting the stirring shaft; an air inlet end of the air guide tube (322) is located in a rod cavity of the threaded rod (32) and forms a rotating seal with the telescopic end of the air guide telescopic tube (42); an air outlet end of the air guide tube (322) extends to the inner wall surface of the hydrogen storage tank (2), and each air outlet hole (3221) is provided on a tube body located outside the threaded tube rod cavity, and a plurality of stirring blades (3222) are also mounted on the tube body.

5. A hydrogen storage tank with stirring function according to claim 4, characterized in that: Each stirring blade (3222) is in the shape of a rectangular parallelepiped, and its length direction is parallel to the axial direction of the air guide tube (322); each stirring blade (3222) is evenly arranged around the circumference of the air guide tube (322), and each air outlet hole (3221) between adjacent stirring blades (3222) is evenly arranged in sequence along the axial direction of the air guide tube (322).

6. A hydrogen storage tank and hydrogen storage device with stirring function according to claim 5, characterized in that: The telescopic end of the air guide telescopic tube (42) is connected to a ventilation bend tube (43). The ventilation bend tube (43) is bent downward and its air outlet end forms a horizontal section coaxial with the air guide tube (322). The horizontal section is inserted into the air guide tube (322) and forms a rotary seal with the air guide tube (322).

7. A hydrogen storage tank and hydrogen storage device with stirring function according to claim 6, characterized in that: The fixed end of the elastic telescopic rod (342) is fixedly mounted on the lower end surface of the upper cover (411).

8. A hydrogen storage tank and hydrogen storage device with stirring function according to claim 7, characterized in that: A driven gear (311) is coaxially fixedly connected to the body of the rotating cylinder (31) extending out of the tank cover (21), and a driving gear (312) matched with the driven gear is rotatably mounted on the tank cover (21), and the driving gear (312) can be driven by an external driving motor.

9. A hydrogen storage device, which uses the hydrogen storage tank with stirring function as claimed in claim 8, characterized in that: The invention comprises a storage tank container (1), wherein a storage tank tank (11) for accommodating a plurality of hydrogen storage tanks (2) is formed in the storage tank container (1), and a honeycomb-shaped vibration isolation pad (12) is installed in the storage tank tank (11); each honeycomb hole formed on the vibration isolation pad (12) constitutes a receiving cavity for accommodating the hydrogen storage tank (2).

10. A hydrogen storage device according to claim 9, characterized in that: A plurality of guide countersunk holes (13) are provided on the wall of the storage tank tank (11), and a return spring (14) is fixedly installed at the bottom of each guide countersunk hole (13), and a push pin (15) that can abut against the outer wall of the hydrogen storage tank (2) is fixedly installed at the other end of the return spring (14).

Images