Device for preparing high-pressure hydrogen

Abstract

The invention relates to the technical field of hydrogen preparation, in particular to a high-pressure hydrogen preparation device which comprises a preparation tank, a conducting rod with a positive electrode and a negative electrode is arranged in the preparation tank, a plurality of electrode plates are stacked on the conducting rod, an output pipe extending outwards is arranged at the top of the conducting rod, and a plurality of conical seats are arranged on the electrode plates. A longitudinally-through taper hole is formed in the taper seat, a power pressurization piece is arranged on the upper side of the taper hole and used for high-voltage circulation of electrolyte among the multiple layers of electrode plates, the same elastic connecting seat is arranged between the conducting rod and the electrode plates, and an ultrasonic vibration piece is arranged at the lower end of the conducting rod and used for improving the liquidity of the electrolyte. The stripping rate of bubbles and the electrode is improved, and the multiple conical bases are evenly distributed on the electrode plate. According to the high-pressure hydrogen preparation device, stacking use of multiple layers of electrode plates is facilitated, the fluidity of internal electrolyte is improved, and the gas outlet efficiency of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production, and specifically to a device for producing high-pressure hydrogen. Background Technique

[0002] The production of high-pressure hydrogen mainly involves various methods such as electrolysis of water to produce hydrogen and reforming of fossil fuels to produce hydrogen. These methods need to consider the purity, production efficiency, and cost of hydrogen. In the electrolysis of water to produce hydrogen, the efficiency can be improved by optimizing the design of the electrolytic cell and using highly efficient electrolysis catalysts.

[0003] When producing high-pressure hydrogen, high-quality water is first added to the electrolytic cell. Through the electrolysis reaction that occurs between the anode plate and the cathode plate in the electrolytic cell and the high-quality water when an electric current is applied, and by using the exchange membrane in the electrolytic cell, oxygen can be generated at the anode plate and hydrogen can be generated at the cathode plate. Then, the gas generated at the cathode plate is preliminarily separated and deeply purified, and then pressurized by a compressor, and a high-pressure hydrogen storage end and a high-pressure hydrogen delivery end are set up to complete the production of high-pressure hydrogen.

[0004] Currently, when producing high-pressure hydrogen, the electrode plates used in the production tank are mostly arranged in a stacked manner inside the electrolytic cell of the production tank. However, this stacked structure will affect the fluidity of the electrolyte, resulting in a decrease in the flow rate during the electrolysis of the electrolyte. The bubbles generated by electrolysis will adhere to the electrode plates, and the gas outlet time for producing gas will be prolonged. For the above reasons, it is necessary to design a high-pressure hydrogen production device that can efficiently circulate the electrolytic water source and produce hydrogen with high efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for producing high-pressure hydrogen to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A device for producing high-pressure hydrogen includes a production tank. Conductive rods with positive and negative poles are arranged in the production tank, and a plurality of electrode plates are stacked on the conductive rods. An output pipe extending outward is arranged at the top of the conductive rod. A plurality of conical seats are arranged on the electrode plates. A longitudinally penetrating conical hole is opened in the conical seat. A dynamic pressure-increasing piece is arranged on the upper side of the conical hole for the high-pressure circulation of the electrolyte between multiple electrode plates. An elastic connection seat is arranged between the conductive rod and the electrode plate. An ultrasonic vibration part is arranged at the lower end of the conductive rod to increase the fluidity of the electrolyte and improve the peeling rate of bubbles from the electrode.

[0007] Preferably, the plurality of conical seats are evenly distributed on the electrode plates, and the narrow end of the conical hole is located on the upper side of the electrode plate for the pressurization and collection of bubbles.

[0008] Preferably, the power boosting sheet is made of rubber material. The cross-section of the power boosting sheet is in a concave structure, and a breakthrough hole is formed in the middle of the power boosting sheet for collecting the upward pushing force of bubbles on the electrode plate.

[0009] Preferably, the elastic connecting seat includes a vibration ring penetrating through the electrode plate. An activity cavity is arranged in the middle of the vibration ring, and screw connection seats for elastically connecting a plurality of electrode plates and the conductive rod are arranged at both ends of the vibration ring.

[0010] Preferably, the cross-section of the vibration ring is in an "I" shape structure. The activity cavity is located outside the conductive rod, and the vibration ring is made of conductive elastic material.

[0011] Preferably, the ultrasonic vibration part includes a contact pad connected to the conductive rod. An inwardly concave conduction seat is sleeved on the outer side of the lower end of the contact pad, and the same ultrasonic vibrator is arranged at the lower ends of the inwardly concave conduction seat and the contact pad.

[0012] Preferably, a support rod is arranged above the plurality of electrode plates on the conductive rod, and a collecting cover communicating with the output pipe is supported on the top of the support rod.

[0013] Preferably, there are also two groups of electrode plates arranged in the preparation tank. The collecting cover converges upward, and the open end of the collecting cover faces the electrode plate and the exchange membrane.

[0014] Preferably, an anti-overflow seat is arranged in the output pipe. A grid sheet is arranged inside the anti-overflow seat, and one-way sealing sheets are arranged in a relatively staggered manner above the grid sheet for collecting the electrolyte.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the electrode plate with a plurality of conical seats and conical holes is adopted, which can conveniently make the upper and lower sides of the electrode plate penetrate through, increase the fluidity of the electrolyte, expand the contact area between the electrolyte and the electrode plate, and improve the reaction rate; furthermore, by arranging the conical holes on the upper side of the electrode plate, it is convenient to collect the bubbles generated by the reaction on the lower side, increase the output gas pressure, prompt the bubbles generated by the reaction to quickly separate from the electrode plate, and enable the bubbles to flow efficiently between the multi-layer electrode plates, creating favorable conditions for the output of gas during the electrolysis process and improving the gas collection rate; moreover, this kinetic energy can also clean the surface of the electrode plate, increase the cleanliness of the electrode plate, and improve the reaction effect of the preparation device; 2. In the present invention, through the arrangement of the ultrasonic vibrators in the ultrasonic vibration member on the lower side of the conductive rod, the vibration energy can be conducted to the conductive rod and multiple electrode plates, enabling the bubbles in the electrode plates to be quickly separated from the electrode plates. Utilizing the characteristic that the density of the gas is less than that of the electrolyte, the bubbles can surge upward, forming upward kinetic energy. In combination with the use of the elastic connection seat and the power booster sheet, the electrode plates can be pushed to vibrate, shaking the bubbles away from the electrode plates, providing favorable conditions for the re-electrolysis of the electrode plates and avoiding the retention of bubbles. 3. In the present invention, through the arrangement of the collecting hood on multiple electrode plates, the cooperation between the collecting hood and the ultrasonic vibrators can separate the gas in the bubbles from the electrolyte, achieving bubble blocking and defoaming, facilitating the rapid discharge of the gas from the output pipe. Moreover, the electrolyte can flow back into the electrolytic cell for recycling. At the same time, by utilizing the kinetic energy of the separated bubbles and the kinetic energy of the upward surging of the bubbles, the exchange membrane can be slightly vibrated simultaneously, realizing the cleaning of the exchange membrane, extending its service life, and improving the hydrogen production efficiency. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic diagram of the preparation tank in the present invention; Figure 3 is the structural schematic diagram of the conductive rod, multiple electrode plates, and ultrasonic vibration member in the present invention; Figure 4 is the partial structural schematic diagram of the electrode plate and the conductive rod in the present invention; Figure 5 is Figure 4 the enlarged structural diagram of A in Figure 6 is the partial structural cross-sectional view of the electrode plate and the elastic connection seat in the present invention; Figure 7 is the partial structural cross-sectional view of the collecting hood and the anti-overflow seat in the present invention; Figure 8 is the exhaust state diagram of the anti-overflow seat in the present invention; Figure 9 is the partial structural schematic diagram of the elastic connection seat in the present invention.

[0017] In the figure: 1. Preparation tank; 2. Conductive rod; 3. Electrode plate; 4. Conical seat; 5. Tapered hole; 6. Support rod; 7. Collecting hood; 8. Power booster sheet; 9. Output pipe; 10. Anti-overflow seat; 11. Mesh sheet; 12. One-way sealing sheet; 13. Ultrasonic vibration member; 14. Ultrasonic vibrator; 15. Concave conduction seat; 16. Contact pad; 17. Exchange membrane; 18. Breakthrough hole; 19. Elastic connection seat; 20. Rotary connection seat; 21. Vibration ring; 22. Activity cavity. Detailed Embodiments

[0018] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0019] See also Figures 1-9 , the present invention provides a technical solution: A device for preparing high-pressure hydrogen. Currently, a preparation tank 1 is used as a reaction container for preparing hydrogen. The preparation tank 1 is provided with an electrolytic cell for storing electrolytes, an electrode structure and an exchange membrane 17. Two conductive rods 2 are provided in the preparation tank 1, and the two conductive rods 2 are respectively connected to the positive and negative poles of a power source. Then, a plurality of electrode plates 3 are stacked on the conductive rods 2. An output pipe 9 is used as a discharge end of the reaction gas at the top of the conductive rods 2. The end of the output pipe extends outward and is transported to a pressurized storage device to complete the preparation of high-pressure hydrogen. In order to improve the problem of poor electrolyte fluidity caused by the stacking of the multi-layer electrode plates 3, a plurality of conical seats 4 may be arranged on the electrode plates 3, and then conical holes 5 penetrating the upper and lower parts of the electrode plates 3 may be longitudinally opened on the conical seats 4 to realize the electrolyte fluidity on the upper and lower sides of the electrode plates 3, and the pressurization treatment is performed through the structural characteristics of the conical seats 4, so that the electrolyte between the multi-layer electrode plates 3 can be circulated at high pressure, and the electrolytic gas can be discharged quickly from bottom to top; then, a power boosting sheet 8 is arranged on the upper side of the conical hole 5, and the power boosting sheet 8 can be used to seal the conical hole 5 with a certain pressure, and the gas electrolyzed on the lower side is first collected and blocked, and when the collected gas pressure is greater than the deformation pressure of the power boosting sheet 8, the gas can open the power boosting sheet 8 and the high pressure is released from the power boosting sheet 8; The released pressure of the gas can also push the electrode plate 3 upward, and through the same elastic connecting seat 19 arranged between the conductive rod 2 and the electrode plate 3, the electrode plate 3 can use the release force of multiple power booster plates 8 to vibrate, and quickly separate the bubbles adhering to the electrode plate 3; finally, an ultrasonic vibrator 13 is arranged at the lower end of the conductive rod 2, and the ultrasonic vibrator 13 can apply the existing ultrasonic cleaning energy application, which is convenient for the preparation device to use the ultrasonic vibrator 13 to conduct energy to the conductive rod 2, so that it slightly vibrates the conductive rod 2 and multiple electrode plates 3, quickly separates the bubbles from the electrode plate 3, and the gas is quickly collected and discharged upward, saving gas collection time, realizing the cleaning of impurities and bubbles on the electrode plate 3, and improving the peeling rate of the bubbles and the electrode plate 3.

[0020] Among them, it is worth mentioning that Figure 4 and 5As shown, multiple conical seats 4 are evenly distributed on the electrode plate 3, which increases the efficiency of gas discharge and collection and facilitates the upwelling of bubbles at different positions. Then, the conical seat 4 has a frustum-shaped structure, and the narrow end of the conical hole 5 is set on the upper side of the electrode plate 3. The opening range of the narrow aperture of the conical hole 5 is 5-10 mm, and the opening range of the wide aperture of the conical hole 5 is 10-20 mm. According to the diameter range of bubbles generated during the existing hydrogen production process, which is 1-5 mm, the aperture of the conical hole 5 can be set within the range of 5-10 mm, which is convenient for the electrode plate 3 to uniformly collect the gas collected below. At the same time, by utilizing the characteristic of the increased output pressure of the small gas outlet, the output gas is pressurized, the discharge rate of the output bubbles is increased, and kinetic energy is provided for the vibration of the electrode plate 3.

[0021] In order to reduce the residence time of bubbles on the electrode plate 3, the kinetic energy of the upwelling of bubbles can be utilized, and a dynamic pressure-increasing sheet 8 is used in the conical hole 5 to vibrate the electrode plate 3, as Figure 5 shown. In some embodiments, the dynamic pressure-increasing sheet 8 can be made of rubber material, and the cross-section of the dynamic pressure-increasing sheet 8 is set into an inwardly concave structure. Then, a breakthrough hole 18 is opened in the middle of the dynamic pressure-increasing sheet 8, and the aperture of the breakthrough hole 18 is smaller than the diameter of the bubbles to block the bubbles below. Among them, when the upward pressure received by the lower side of the dynamic pressure-increasing sheet 8 is greater than the deformation pressure of the breakthrough hole 18, the breakthrough hole 18 will be pushed upward to expand. When the upward pressure of the bubbles converging below the conical seat 4 is greater than the deformation pressure of the breakthrough hole 18 during the electrolytic hydrogen production work, the breakthrough hole 18 can be pushed open, rushed to the upper side of the electrode plate 3, and the electrode plate 3 is pushed.

[0022] Next, the utilization of the kinetic energy of the upwelling of bubbles, as Figure 4 and 6 shown. In some embodiments, the electrode plate 3 can be elastically connected to the conductive rod 2 through an elastic connection seat 19. A vibration ring 21 is arranged between the electrode plate 3 and the conductive rod 2. Then, a hollow structure activity cavity 22 is arranged in the middle of the vibration ring 21. Rotary connection seats 20 are arranged at both ends of the vibration ring 21, and the rotary connection seats 20 are threadedly connected to the conductive rod 2 to limit the upper and lower sides of the vibration ring 21, making the elastic connection between the multiple electrode plates 3 and the conductive rod 2 more stable, and at the same time improving the convenience of the connection between the elastic connection seat 19 and the conductive rod 2.

[0023] Furthermore, in order to increase the connection elasticity between the electrode plate 3 and the conductive rod 2, as Figure 6 shown, the cross-section of the vibration ring 21 can be set into an "I"-shaped structure, and the activity cavity 22 is arranged on the outside of the conductive rod 2. The vibration ring 21 can be made of conductive elastic material, which is convenient for the conductive rod to conduct the power supply current, and the periphery of the conductive rod is elastically processed, which is convenient for the flexible vibration of the multi-layer electrode plates 3.

[0024] In order to achieve rapid discharge of bubbles on the electrode plate 3 and save bubble transfer time, the ultrasonic vibrator 13 can be used to ultrasonically vibrate the multiple electrode plates 3. The slight vibration of the multi-layer electrode plates 3 can be enhanced by power transmission, such as Figure 3 and 9 As shown, in some embodiments, the ultrasonic vibrator 13 can use a contact pad 16, and the contact pad 16 uses an insulating material. The contact pad 16 is connected to the conductive rod 2, and then a concave conductive seat 15 is sleeved on the lower end of the contact pad 16. The concave conductive seat 15 is located on the outside of the contact pad 16, and then the same ultrasonic vibrator 14 is set at the lower end of the contact pad 16. By applying the existing ultrasonic energy application, the ultrasonic vibrator 14 can be used to ultrasonically vibrate the structure in the preparation tank 1 to quickly separate the bubbles from the electrode plate 3, which is beneficial for the electrode plate 3 to continue the electrolysis reaction and provide favorable conditions for the upwelling of bubbles.

[0025] Furthermore, in some embodiments, a support rod 6 can be arranged on the conductive rod 2 on the upper side of the plurality of electrode plates 3, and then a collecting cover 7 is supported on the top of the support rod 6, and the collecting cover 7 is connected through the output pipe 9. When the upwelling bubbles rush to the collecting cover 7, the upwelling kinetic energy of the bubbles collides with the collecting cover 7 to break the bubbles, and then the gas can be quickly separated from the electrolyte, facilitating the rapid transfer of the gas.

[0026] Among them, Figure 2 As shown, the existing preparation filling also includes an exchange membrane 17 located between two groups of electrode plates 3 in the preparation tank 1. Through the energization of the electrolyte in the preparation tank 1, the exchange membrane 17 is an auxiliary structure for hydrogen preparation. When the exchange membrane 17 is used for a long time, its performance will decrease. In order to facilitate the long-term use of the preparation tank 1, the collection cover 7 can be folded upward, and the open end of the collection cover 7 is arranged relative to the electrode plate 3 and the exchange membrane 17 to facilitate the unified collection of the lower side gas. The breaking kinetic energy of the bubble exhaust can also be used to vibrate and clean the exchange membrane 17 to extend the service life of the exchange membrane 17.

[0027] Secondly, in order to prevent the spillage of electrolytes, such as Figure 7 and 8 As shown, in some embodiments, an anti-overflow seat 10 may be provided in the output pipe 9, a mesh sheet 11 may be provided inside the anti-overflow seat 10 to separate the electrolyte from the bubbles, and two one-way sealing sheets 12 may be provided on the upper side of the mesh sheet 11, and the two one-way sealing sheets 12 may be staggered relative to each other and cover the upper side of the mesh sheet 11. When the air pressure below the collecting cover 7 is relatively high, the two one-way sealing sheets 12 may be flushed out and expanded upward, so as to facilitate the transfer of the gas, collect the electrolyte that overflows the bubbles, and increase the gas discharge rate.

[0028] Working principle of the present invention: Step 1: When the hydrogen production device is working, an appropriate amount of electrolyte is loaded into the preparation tank 1. Then, the positive and negative electrodes of the power supply are respectively connected to the two conductive rods 2 of the preparation tank 1. After the electrolyte is electrified, an electrolysis reaction occurs, generating hydrogen and oxygen. During the generation of hydrogen and oxygen, they are formed on the surface of each electrode plate 3. By energizing the ultrasonic vibrator 14 to work, the electrolyte can be used as a medium to ultrasonically vibrate the structure in the preparation tank 1, and this vibration force can also be transmitted to the conductive rod 2 and multiple electrode plates 3 through the concave conduction seat 15 and the contact pad 16, improving the vibration intensity of the electrode plate 3 and increasing the separation efficiency of the bubbles from the electrode plate 3. Step 2: Due to the fact that the density of the separated bubbles is less than that of the electrolyte, they can surge upward. The bubbles collected by the lower electrode plate 3 surge upward to the upper electrode plate 3. By using the multiple conical seats 4 and conical holes 5 provided on the electrode plate 3, the bubbles can be collected and processed. When the pressure of the collected bubbles is greater than the deformation pressure of the breakthrough hole 18, the gas can rush out from the breakthrough hole 18 and rush upward to the previous electrode plate 3 with greater pressure. And the pressure rushing out of the breakthrough hole 18 will drive the power booster sheet 8 and the electrode plate 3 to have an upward force. With the use of the elastic connection seat 19 between each electrode plate 3 and the conductive rod 2, it can push the vibration ring 21 to deform the activity cavity 22. The electrode plate 3 is movably arranged on the conductive rod 2, and the gas rushing out pressure can drive the electrolytic plate to vibrate, separating the electrode plate 3 from the bubbles on its surface, avoiding bubble retention, and providing favorable conditions for the re-electrolysis reaction on the electrode plate 3. Step 3: Similarly, by allowing the lower bubbles to pass through the electrode plate 3, the gas is pressurized layer by layer and converges to the upper side of the preparation tank 1. Then, by using the converging cover 7 on the upper side of the conductive rod 2, the bubbles can be broken by the converging cover 7 to achieve the separation of the electrolyte and the gas. Then, by using the kinetic energy of the separated bubbles and the kinetic energy of the upward surging of the bubbles, the exchange membrane 17 can be slightly vibrated at the same time. With the vibration cleaning of the ultrasonic vibrator 14, the exchange membrane 17 can be cleaned, extending its service life. Step 4: The separated gas passes through the anti-overflow seat 10 and leads to the output pipe 9. By using the grid sheet 11 in the anti-overflow seat 10, the overflow of the electrolyte is prevented. The gas uses the upward conveying force to push open the two one-way sealing sheets 12, thus realizing the gas discharge. When the gas in the output pipe 9 has a backflow, it can be changed to "the backflow gas can press down the two one-way sealing sheets 12, making the one-way sealing sheets 12 fit with the grid sheet 11, thereby closing the output pipe 9 and sealing the gas in the preparation tank 1, increasing the safety of using the preparation tank 1.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present invention. The present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for producing high-pressure hydrogen, comprising a preparation tank (1), wherein a conductive rod (2) with positive and negative electrodes is arranged in the preparation tank (1), and a plurality of electrode plates (3) are stacked on the conductive rod (2), and an output pipe (9) extending outward is arranged on the top of the conductive rod (2), characterized in that: The electrode plate (3) is provided with a plurality of conical seats (4), the conical seats (4) are provided with longitudinally penetrating conical holes (5), and a power boosting sheet (8) is provided on the upper side of the conical holes (5) for high-pressure circulation of electrolytes between the multi-layer electrode plates (3); A common elastic connection seat (19) is provided between the conductive rod (2) and the electrode plate (3), and an ultrasonic vibrator (13) is provided at the lower end of the conductive rod (2) for increasing the fluidity of the electrolyte and improving the peeling rate between the bubbles and the electrode plate (3).

2. The device for producing high-pressure hydrogen as claimed in claim 1, characterized in that: A plurality of the conical seats (4) are evenly distributed on the electrode plate (3); the narrow end of the conical hole (5) is located on the upper side of the electrode plate (3) and is used for pressurizing and collecting bubbles.

3. The device for producing high-pressure hydrogen as claimed in claim 1, characterized in that: The power boosting sheet (8) is made of rubber material, the cross section of the power boosting sheet (8) is a concave structure, and a breakthrough hole (18) is provided in the middle of the power boosting sheet (8) for collecting bubbles to push against the electrode plate (3).

4. The device for producing high-pressure hydrogen as claimed in claim 1, characterized in that: The elastic connection seat (19) comprises a vibration ring (21) penetrating the electrode plate (3), a movable cavity (22) being provided in the middle of the vibration ring (21), and screw-on seats (20) being threadedly connected to the conductive rod (2) being provided at both ends of the vibration ring (21), for elastically connecting a plurality of electrode plates (3) to the conductive rod (2).

5. The device for producing high-pressure hydrogen as claimed in claim 4, characterized in that: The cross section of the vibration ring (21) is an "I"-shaped structure, the active cavity (22) is located outside the conductive rod (2), and the vibration ring (21) is made of conductive elastic material.

6. The device for producing high-pressure hydrogen as claimed in claim 1, characterized in that: The ultrasonic vibrator (13) comprises a contact pad (16) connected to the conductive rod (2), the lower end of the contact pad (16) is sleeved with an inner concave conductive seat (15) on the outer side, and the lower ends of the inner concave conductive seat (15) and the contact pad (16) are provided with the same ultrasonic vibrator (14).

7. The device for producing high-pressure hydrogen as claimed in claim 1, characterized in that: A support rod (6) is provided on the upper side of the plurality of electrode plates (3) on the conductive rod (2), and the top of the support rod (6) supports a collecting cover (7) that penetrates the output pipe (9).

8. The device for producing high-pressure hydrogen according to claim 7, further comprising an exchange membrane (17) disposed between two sets of electrode plates (3) in the preparation tank (1), characterized in that: The collecting cover (7) is retracted upwards, and the open end of the collecting cover (7) is opposite to the electrode plate (3) and the exchange membrane (17).

9. The device for producing high-pressure hydrogen as claimed in claim 8, characterized in that: An anti-overflow seat (10) is arranged in the output pipe (9), a grid sheet (11) is arranged inside the anti-overflow seat (10), and relatively staggered one-way sealing sheets (12) are arranged on the upper side of the grid sheet (11) for collecting electrolyte.

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