Hydrogen production device integrating centrifugal separation and buoyancy collection

Abstract

The invention discloses a hydrogen production device integrating centrifugal separation and buoyancy collection, and relates to the technical field of hydrogen energy preparation, the hydrogen production device comprises an integrated separation and collection cabin, the integrated separation and collection cabin comprises a separation cavity and a collection cavity, and a spiral guide plate and a gas collection pipe are mounted in the separation cavity; electrolyte and oxygen in hydrogen can be separated through cooperation of the spiral guide plate and the gas collecting pipe; the collecting cavity is located on the lower side of the separating cavity, a buoyancy gas collecting bag is arranged in the collecting cavity, electrolyte can be collected in the collecting cavity, and the buoyancy gas collecting bag can collect hydrogen after the electrolyte is separated; the buoyancy air collecting bag is connected with a cleaning mechanism; separation and collection functions are integrated through integrated design, external connecting pipelines are greatly reduced, the leakage risk is reduced, the centrifugal separation principle is adopted, the separation efficiency is far higher than that of gravity sedimentation, and hydrogen, oxygen and electrolyte can be rapidly separated.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production technology, specifically a hydrogen production device that integrates centrifugal separation and buoyancy collection. Background Technology

[0002] Utilizing renewable energy sources in islands, border regions, and other areas to produce hydrogen through water electrolysis is an effective way to achieve on-site energy consumption and storage. However, such applications place special demands on hydrogen production equipment: it needs to be compact to fit into limited spaces; it needs to be highly efficient and reliable to reduce maintenance frequency; it needs to have high safety to cope with harsh environments; and it needs to be able to adapt to drastic fluctuations in input power.

[0003] In traditional water electrolysis hydrogen production systems, gas separation, collection, and storage units are often independently set up and connected by complex pipelines. Gas separation relies heavily on simple gravity sedimentation or filtration, which is inefficient and carries the risk of hydrogen-oxygen mixing. The collection unit typically requires additional power equipment (such as compressors) for gas transport, increasing energy consumption and potential points of failure. Furthermore, the separated hydrogen is directly collected in atmospheric or low-pressure storage tanks, making it difficult to smooth out gas production pressure changes caused by fluctuations in renewable energy sources, posing challenges to the stability of the entire system and downstream hydrogen-using equipment.

[0004] Therefore, a hydrogen production device integrating centrifugal separation and buoyancy collection is provided to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrogen production device that integrates centrifugal separation and buoyancy collection to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A hydrogen production device integrating centrifugal separation and buoyancy collection includes an integrated separation and collection chamber. The integrated separation and collection chamber includes a separation chamber and a collection chamber. The separation chamber is equipped with a spiral guide plate and a gas collecting pipe. The cooperation of the spiral guide plate and the gas collecting pipe can separate electrolyte and oxygen in hydrogen. The collection chamber is located below the separation chamber. The collection chamber is equipped with a buoyancy gas collecting bladder. The collection chamber can collect electrolyte, and the buoyancy gas collecting bladder can collect hydrogen after electrolyte separation. The buoyancy gas collecting bladder is connected to a cleaning mechanism. The cleaning mechanism is configured to be driven by the buoyancy movement of the buoyancy gas collecting bladder in the electrolyte to perform cleaning and stirring actions.

[0007] As a further embodiment of the present invention: wherein, a liquid inlet pipe is fixedly and continuously connected to one side of the separation chamber, the spiral guide plate is wound around the gas collecting pipe, a spiral gas guide pipe is installed inside the gas collecting pipe, a hydrogen pipe is fixedly and continuously connected to the upper side of the spiral gas guide pipe, and an oxygen pipe is fixedly and continuously connected to the side of the gas collecting pipe.

[0008] As a further embodiment of the present invention: wherein the tail end of the gas collecting pipe is fixed and connected to a conical pipe, and the conical pipe is connected to the spiral gas guide pipe.

[0009] As a further embodiment of the present invention, a molecular sieve membrane is installed inside the hydrogen tube.

[0010] As a further embodiment of the present invention: an installation plate is installed inside the collection chamber, the buoyancy gas collection bladder is installed on the installation plate, a sealing plate is installed on the upper side of the buoyancy gas collection bladder, a transmission hose is fixedly connected to and runs through the hydrogen pipe, and a drain pipe is installed on one side of the collection chamber.

[0011] As a further embodiment of the present invention: the cleaning mechanism is located outside the buoyancy air collection bladder, the cleaning mechanism includes a scraper ring, the scraper ring is fixedly connected to the sealing plate, the scraper ring is in contact with the inner wall of the collection chamber, an agitator blade is rotatably connected to the outer side of the mounting plate, a spiral sleeve is rotatably connected to the inner wall of the collection chamber through a mounting block, a spiral rod is spirally connected inside the spiral sleeve, the spiral rod is rotatably connected to the scraper ring, and a toothed ring is fixedly connected to the upper side of the agitator blade through a bracket, the toothed ring meshing with the outer wall of the spiral sleeve.

[0012] As a further embodiment of the present invention: a hydrogen storage tank is provided on one side of the integrated separation and collection chamber, the hydrogen storage tank includes an explosion-proof tank, a contraction airbag is installed inside the explosion-proof tank, a hydrogen inlet pipe and a hydrogen outlet pipe are respectively installed on both sides of the contraction airbag, the hydrogen inlet pipe passes through the integrated separation and collection chamber and is fixedly connected to the buoyancy airbag by a flexible hose.

[0013] As a further embodiment of the present invention: a spring plate is installed on the inner top wall of the explosion-proof container, and the spring plate is in contact with the shrinkage airbag.

[0014] As a further embodiment of the present invention: the collecting chamber is filled with electrolyte, and the liquid level at least submerges the lower part of the buoyancy collecting bladder, so as to form a water seal barrier between the buoyancy collecting bladder and the separation chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The integrated design combines separation and collection functions, greatly reducing external connection pipelines and lowering the risk of leakage. It adopts the centrifugal separation principle, and the separation efficiency is much higher than that of gravity sedimentation, which can quickly separate hydrogen, oxygen and electrolyte. 2. The water seal design of the collection chamber physically isolates the channel for hydrogen and oxygen mixing, providing an inherent safety barrier. It utilizes the buoyancy of hydrogen itself to achieve collection and drive cleaning without the need for additional power, saving energy and improving reliability in unattended environments. 3. The buoyancy gas collection bladder can serve as a primary gas buffer unit, while the hydrogen storage tank, composed of a flexible gas storage liner and elastic elements, can effectively smooth the fluctuating gas pressure from the electrolyzer, enabling the system to adapt to the input fluctuations of renewable energy and output hydrogen with stable pressure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the hydrogen storage tank in this invention; Figure 3 This is a schematic diagram of the internal structure of the integrated separation and collection chamber in this invention; Figure 4 This is a schematic diagram of the internal structure of the separation cavity in this invention; Figure 5 This is a schematic diagram of the internal structure of the collection cavity in this invention; Figure 6 This is a schematic diagram of one embodiment of the present invention.

[0017] The correspondence between the labels and component names in the attached figures is as follows: 1. Integrated separation and collection chamber; 2. Separation chamber; 201. Liquid inlet pipe; 202. Spiral guide plate; 203. Gas collection pipe; 204. Conical pipe; 205. Spiral gas guide pipe; 206. Oxygen pipe; 207. Hydrogen pipe; 208. Transfer hose; 3. Collection chamber; 301. Mounting plate; 302. Buoyancy gas collection bladder; 303. Sealing plate; 304. Scraper ring; 305. Spiral rod; 306. Mounting block; 307. Spiral sleeve; 308. Toothed ring; 309. Liquid outlet pipe; 310. Stirring blades; 4. Molecular sieve membrane; 5. Hydrogen storage tank; 501. Explosion-proof tank; 502. Contraction gas bladder; 503. Spring plate; 504. Hydrogen outlet pipe; 505. Hydrogen inlet pipe. Detailed Implementation

[0018] Please see Figures 1-6A hydrogen production device integrating centrifugal separation and buoyancy collection includes an integrated separation and collection chamber 1, which comprises a separation chamber 2 and a collection chamber 3. The separation chamber 2 is equipped with a spiral guide plate 202 and a gas collecting pipe 203, which work together to separate electrolyte and oxygen from hydrogen. The collection chamber 3 is located below the separation chamber 2 and contains a buoyancy gas collecting bladder 302. The collection chamber 3 collects electrolyte, and the buoyancy gas collecting bladder 302 collects hydrogen after electrolyte separation. The buoyancy gas collecting bladder 302 is connected to a cleaning mechanism, which is configured to be driven by the buoyancy of the buoyancy gas collecting bladder 302 in the electrolyte to perform cleaning and stirring actions. In this embodiment, the electrolyte (mixed gas-liquid mixture) is from an electrolyzer and filled with hydrogen and oxygen bubbles. Pumped into the upper separation chamber 2, the spiral guide plate 202 guides the fluid to rotate at high speed. Under the action of strong centrifugal force, the densest electrolyte is thrown to the outermost chamber wall, the slightly less dense oxygen is in the middle, and the lightest hydrogen gathers in the central area. The hydrogen-rich gas enters the central gas collecting pipe 203. The separated electrolyte is introduced into the lower collection chamber 3, which is pre-filled with a certain height of electrolyte. After the hydrogen enters the buoyancy gas collecting bladder 302, it will gather at the top of the bladder due to its extremely light density. As the amount of hydrogen increases, the buoyancy of the buoyancy gas collecting bladder 302 increases, and the entire bladder floats upward and expands its overall volume, similar to a retractable folding corrugated pipe. When the buoyancy gas collecting bladder 302 floats or sinks, it will clean the integrated separation and collection chamber 1 and agitate the electrolyte at the bottom through the mechanical connection structure to prevent dirt from accumulating.

[0019] like Figure 4 and Figure 6 As shown, a liquid inlet pipe 201 is fixedly and continuously connected to one side of the separation chamber 2. A spiral guide plate 202 is wound around a gas collecting pipe 203. A spiral gas guide pipe 205 is installed inside the gas collecting pipe 203. A hydrogen pipe 207 is fixedly and continuously connected to the upper side of the spiral gas guide pipe 205. An oxygen pipe 206 is fixedly and continuously connected to the side of the gas collecting pipe 203. A conical pipe 204 is fixedly and continuously connected to the tail end of the gas collecting pipe 203. The conical pipe 204 communicates with the spiral gas guide pipe 205. A molecular sieve membrane 4 is installed inside the hydrogen pipe 207. In this embodiment, the mixed fluid... (Hydrogen, oxygen, and electrolyte) After passing through the inlet pipe 201 and the spiral guide plate 202, a strong rotating flow is immediately generated. This rotating flow divides the mixed fluid into two parts. The liquid falls into the collection chamber 3 under gravity, while the oxygen and hydrogen gases enter the gas collecting pipe 203. Inside the gas collecting pipe 203, there is a thinner spiral guide pipe 205. Its spiral structure facilitates the rotation of the oxygen and hydrogen gases. When the oxygen and hydrogen rotate, the hydrogen gas is located at the center of the spiral gas, and the oxygen gas is located on the periphery. The hydrogen gas at the center of the spiral gas rises and is drawn out from the hydrogen pipe 207. Figure 6In this case, 'a' represents hydrogen; the oxygen separated to the outside is led out from the oxygen pipe 206 on the side of the gas collecting pipe 203 and collected by another oxygen collecting tank. Figure 6 (b represents oxygen); a molecular sieve membrane 4 is attached inside the hydrogen pipe 207. This membrane is covered with nanoscale micropores, which are only small enough to allow smaller hydrogen molecules (about 0.29 nanometers in diameter) to pass through quickly, while blocking any potentially larger oxygen molecules (about 0.35 nanometers in diameter) that may remain. In this way, the hydrogen that finally flows out of the hydrogen pipe 207 is hydrogen with extremely high purity.

[0020] Furthermore, the collection chamber 3 is equipped with a liquid level sensor to monitor the electrolyte level in real time. When the liquid level is lower than the set safe height (i.e. the minimum liquid level required for the lower part of the buoyancy gas collection bladder 302 to be completely submerged), the control system will automatically start the liquid replenishment valve to ensure that the water seal barrier remains effective.

[0021] like Figure 3 and Figure 5 As shown, a mounting plate 301 is installed inside the collection chamber 3, and a buoyancy gas collecting bladder 302 is mounted on the mounting plate 301. A sealing plate 303 is installed on the upper side of the buoyancy gas collecting bladder 302. A transmission hose 208 is fixedly connected to and runs through the hydrogen pipe 207. A drain pipe 309 is installed on one side of the collection chamber 3. The collection chamber 3 is filled with electrolyte, and the liquid level at least submerges the lower part of the buoyancy gas collecting bladder 302 to form a water seal barrier between the buoyancy gas collecting bladder 302 and the separation chamber 2. In this embodiment, the buoyancy gas collecting bladder 302 is mounted on the mounting plate 301, and a sealing plate 303 is provided at the top to prevent gas leakage from the top. Hydrogen is transported through a transmission hose 208. 8. The tubing is introduced into the buoyancy gas collection bladder 302. It can be bent without hindering the up-and-down movement of the sealing plate 303 on the buoyancy gas collection bladder 302, i.e., the up-and-down sliding of the sealing plate 303. The electrolyte in the collection chamber 3 is always maintained at a certain level, and this level must at least submerge the buoyancy gas collection bladder 302. In this way, the buoyancy gas collection bladder 302 and the hydrogen inside it are completely "immersed" in the electrolyte. This liquid barrier physically isolates the oxygen that may escape from the buoyancy gas collection bladder 302, ensuring that even if a trace amount of oxygen slips down, it cannot come into contact with the hydrogen in the buoyancy gas collection bladder 302, thus forming intrinsic safety. Excess or replacement electrolyte can be discharged through the drain pipe 309.

[0022] like Figure 5As shown, the cleaning mechanism is located outside the buoyancy collection bladder 302. The cleaning mechanism includes a scraper ring 304, which is fixedly connected to the sealing plate 303. The scraper ring 304 fits against the inner wall of the collection chamber 3. An agitator blade 310 is rotatably connected to the outer side of the mounting plate 301. A spiral sleeve 307 is rotatably connected to the inner wall of the collection chamber 3 via a mounting block 306. A spiral rod 305 is spirally connected inside the spiral sleeve 307. The spiral rod 305 is rotatably connected to the scraper ring 304. The mounting block 306 has through holes that are directly opposite the spiral sleeve 307. The lower end of the spiral rod 305 extends downward through the through hole of the mounting block 306 and has a limiting sealing plate at its end. A toothed ring 308 is fixedly connected to the upper side of the agitator blade 310 via a bracket. 8 engages with the outer wall of the spiral sleeve 307; In this embodiment, when the buoyancy collection bladder 302 rises due to the increase of gas, it will drive the top sealing plate 303 to rise. The scraper ring 304 is connected to a spiral rod 305. When the spiral rod 305 rises, it will drive the spiral sleeve 307 that it engages with to rotate. The gear on the outer side of the spiral sleeve 307 engages with a toothed ring 308. The rotation of the toothed ring 308 will eventually drive the stirring blade 310 connected to it to rotate, thereby stirring the electrolyte at the bottom. At the same time, the up and down movement of the scraper ring 304 itself will directly scrape the vertical inner wall of the collection chamber 3. As long as the sealing plate 303 at the top of the airbag floats up and down, cleaning and stirring will be carried out automatically without the need for an additional motor or control, which is extremely energy-saving and reliable.

[0023] Specifically, the upward and downward movement of the screw rod 305 are both limited. When the screw rod 305 moves upward, the limiting plate prevents it from detaching from the screw sleeve 307. When the screw rod 305 moves downward, the tail end of the screw rod 305 does not come into contact with the stirring blade 310, thus avoiding motion interference.

[0024] Furthermore, a return spring is fixedly connected between the mounting block 306 and the scraper ring 304. When the gas inside the buoyancy collection bladder 302 gradually decreases, the return spring pulls the scraper ring 304 down, causing the buoyancy collection bladder 302 to contract. This prevents the scraper ring 304 from failing to move down due to its own weight, thus failing to scrape the inner wall of the collection chamber 3.

[0025] like Figure 2As shown, a hydrogen storage tank 5 is provided on one side of the integrated separation and collection chamber 1. The hydrogen storage tank 5 includes an explosion-proof tank 501. A contraction airbag 502 is installed inside the explosion-proof tank 501. A hydrogen inlet pipe 505 and a hydrogen outlet pipe 504 are respectively installed on both sides of the contraction airbag 502. The hydrogen inlet pipe 505 passes through the integrated separation and collection chamber 1 and is fixed to the buoyancy airbag 302 and is connected by a flexible hose. A spring plate 503 is installed on the inner top wall of the explosion-proof tank 501, and the spring plate 503 is in contact with the contraction airbag 502. In this embodiment, the inside of the hydrogen storage tank 5 is not an empty steel tank, but is equipped with a contraction airbag. 502 (Flexible Inner Liner): Hydrogen gas enters this gasbag through the hydrogen inlet pipe 505, causing it to expand. A pre-tensioned spring plate 503 is installed on the outside of the gasbag and at the top of the inside of the explosion-proof tank 501. When the gasbag inflates, it compresses the spring plate 503; when gas is used, the spring plate 503 rebounds, squeezing the gasbag and stabilizing its discharge. This spring-gasbag system acts like a giant buffer, automatically absorbing and balancing pressure fluctuations from the front end, providing downstream equipment with pressure-stable hydrogen. The outer explosion-proof tank 501 provides physical protection and ultimate explosion-proof safety redundancy.

[0026] Working principle: When the device of this invention is working, the wet hydrogen-oxygen mixture generated by electrolysis is tangentially pumped into the separation chamber 2 through the inlet pipe 201. After centrifugal separation, the hydrogen is purified and introduced into the underwater buoyancy gas collection bladder 302 for temporary storage. The buoyancy gas collection bladder floats up, driving the cleaning mechanism to work. When the buoyancy gas collection bladder 302 floats or sinks, it cleans the integrated separation collection chamber 1 through the mechanical connection structure and stirs the electrolyte at the bottom to prevent dirt deposition. When the hydrogen storage reaches a certain level, it can be transported to the pressure adaptive hydrogen storage tank 5 for buffer storage. When gas is needed, the spring plate 503 rebounds, squeezing the gas bladder and stabilizing the gas discharge. This spring-gas bladder system is like a huge buffer, automatically absorbing and balancing pressure fluctuations from the front end, providing downstream equipment with pressure-stable hydrogen. The outer explosion-proof tank 501 provides physical protection and final explosion-proof safety redundancy. The entire process is integrated into one, which is safe, efficient, energy-saving, and has good fluctuation adaptability.

Claims

1. A hydrogen production device integrating centrifugal separation and buoyancy collection, characterized in that, The system includes an integrated separation and collection chamber (1), which includes a separation chamber (2) and a collection chamber (3). The separation chamber (2) is equipped with a spiral guide plate (202) and a gas collecting pipe (203). The cooperation of the spiral guide plate (202) and the gas collecting pipe (203) can separate the electrolyte and oxygen in the hydrogen. The collection chamber (3) is located below the separation chamber (2). The collection chamber (3) is equipped with a buoyancy gas collecting bladder (302). The collection chamber (3) can collect the electrolyte. The buoyancy gas collecting bladder (302) can collect the hydrogen after the electrolyte is separated. The buoyancy gas collecting bladder (302) is connected to a cleaning mechanism. The cleaning mechanism is configured to be driven by the buoyancy of the buoyancy gas collecting bladder (302) in the electrolyte to perform cleaning and stirring actions.

2. The hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 1, characterized in that, One side of the separation chamber (2) is fixed and connected to a liquid inlet pipe (201). The spiral guide plate (202) is wound around the gas collecting pipe (203). A spiral gas guide pipe (205) is installed inside the gas collecting pipe (203). A hydrogen pipe (207) is fixed and connected to the upper side of the spiral gas guide pipe (205). An oxygen pipe (206) is fixed and connected to the side of the gas collecting pipe (203).

3. The hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 2, characterized in that, The tail end of the gas collecting pipe (203) is fixed and connected to a conical pipe (204), which is connected to the spiral air guide pipe (205).

4. The hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 3, characterized in that, The hydrogen pipe (207) is equipped with a molecular sieve membrane (4).

5. A hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 4, characterized in that, An installation plate (301) is installed inside the collection chamber (3). The buoyancy gas collection bag (302) is installed on the installation plate (301). A sealing plate (303) is installed on the upper side of the buoyancy gas collection bag (302). A transmission hose (208) is fixed and connected to the hydrogen pipe (207). A drain pipe (309) is installed on one side of the collection chamber (3).

6. A hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 5, characterized in that, The cleaning mechanism is located outside the buoyancy air collection bag (302). The cleaning mechanism includes a scraper ring (304), which is fixedly connected to the sealing plate (303). The scraper ring (304) is in contact with the inner wall of the collection chamber (3). An agitator blade (310) is rotatably connected to the outer side of the mounting plate (301). A spiral sleeve (307) is rotatably connected to the inner wall of the collection chamber (3) through a mounting block (306). A spiral rod (305) is spirally connected inside the spiral sleeve (307). The spiral rod (305) is fixedly connected to the scraper ring (304). A toothed ring (308) is fixedly connected to the upper side of the agitator blade (310) through a bracket. The toothed ring (308) meshes with the outer wall of the spiral sleeve (307).

7. A hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 6, characterized in that, A hydrogen storage tank (5) is provided on one side of the integrated separation and collection chamber (1). The hydrogen storage tank (5) includes an explosion-proof tank (501). A shrinkable airbag (502) is installed inside the explosion-proof tank (501). A hydrogen inlet pipe (505) and a hydrogen outlet pipe (504) are respectively installed on both sides of the shrinkable airbag (502). The hydrogen inlet pipe (505) passes through the integrated separation and collection chamber (1) and is fixed to the buoyancy airbag (302) and connected by a flexible hose.

8. A hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 7, characterized in that, The explosion-proof container (501) has a spring plate (503) installed on its inner top wall, and the spring plate (503) is in contact with the shrinkage airbag (502).

9. A hydrogen production device integrating centrifugal separation and buoyancy collection according to claim 1, characterized in that, The collecting chamber (3) is filled with electrolyte, and the liquid level is at least submerged in the lower part of the buoyancy collecting bladder (302) to form a water seal barrier between the buoyancy collecting bladder (302) and the separation chamber (2).

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