Efficient automatic drying device for hydrogen production through water electrolysis and use method of efficient automatic drying device

Abstract

The invention discloses an efficient automatic drying device for hydrogen production through water electrolysis and a using method thereof. The efficient automatic drying device comprises a barrel, a sealing cover and a gas-water filter are arranged at the top of the barrel, and a drainage assembly is arranged at the bottom of the inner side of the barrel; a water outlet is formed in the bottom of the cylinder body, an air inlet and an air outlet are formed in the two sides of the cylinder body, the water drainage assembly comprises a pressing block and a water scraping assembly, a sealing assembly is arranged at the bottom of the pressing block, an installation pipe is arranged below the water outlet, and a supporting assembly is installed outside the cylinder body; through double filtration of the gas-water filter membrane and the condensation pipe, moisture in gas can be efficiently removed, and the drying effect is ensured; through the design of the drainage assembly and the movable drainage pipe, the automatic drainage function is achieved, and operation complexity is reduced; the arrangement of the water scraping assembly can greatly reduce residual water vapor on the inner wall of the cylinder body, and the arrangement of the movable drainage pipe at the bottom can further reduce residual liquid at the bottom of the cylinder body, so that the interior of the cylinder body is dry, and the quality of output gas is ensured.

Description

Technical Field

[0001] The present invention specifically relates to a high - efficiency automatic hydrogen production drying device for electrolytic water and its usage method. Background Art

[0002] With the increasing global demand for clean energy, hydrogen, as an efficient, clean, and sustainable energy carrier, has received extensive attention. Hydrogen production by electrolytic water is an important hydrogen production method. It decomposes water into hydrogen and oxygen through electrical energy, with advantages such as high product purity and no pollution in the process. Its basic principle is that in an electrolytic cell, water molecules undergo oxidation - reduction reactions under the action of an electric field, generating hydrogen at the cathode and oxygen at the anode.

[0003] During the process of hydrogen production by electrolytic water, the newly generated hydrogen usually carries a certain amount of water vapor. Water vapor, as an impurity, will reduce the purity of hydrogen. Impure hydrogen may affect the performance and service life of equipment. Hydrogen containing water vapor may form condensed water on the inner walls of pipelines and storage containers during transportation and storage, thereby causing metal corrosion, shortening the service life of equipment, increasing maintenance costs. In some chemical reactions that require dry hydrogen, the presence of water vapor may interfere with the reaction, reducing the reaction efficiency and product quality. Common hydrogen drying methods mainly include adsorption drying, cooling drying, and membrane separation drying, etc. At present, the automation level of most hydrogen drying devices is relatively low. During actual operation, manual operation and monitoring are required frequently, which not only increases labor costs but also easily leads to unstable drying effects due to human operation errors. Moreover, the remaining water vapor after drying will adhere to the inner wall of the device, which may cause the dried hydrogen to re - mix with water vapor, and the cost of automatic drainage after water vapor condensation is relatively high.

[0004] Therefore, it is necessary to invent a high - efficiency automatic hydrogen production drying device for electrolytic water and its usage method to solve the above problems. Summary of the Invention

[0005] (I) Object of the Invention The object of the present invention is to provide a high - efficiency automatic hydrogen production drying device for electrolytic water and its usage method to solve the above - mentioned deficiencies in the technology.

[0006] (II) Technical Solution To achieve the above object, the present invention provides the following technical solution: A high - efficiency automatic hydrogen production drying device for electrolytic water, including a cylinder body, a cover is provided at the top of the cylinder body, an air - water filter is installed between the cover and the top of the cylinder body, and a drainage component is provided at the bottom inside the cylinder body; A drainage port is provided at the bottom of the cylinder body, an air inlet and an air outlet are respectively provided on both sides of the cylinder body, the drainage component is arranged at the top of the drainage port, and a movable drain pipe is provided at the drainage port; The gas-water filter includes a mounting plate, a filter box is fixed to the bottom of the mounting plate, a gas-water filter membrane is provided at the bottom of the filter box, a condensing pipe is installed inside the filter box, and a coolant inlet and a coolant outlet are provided at the end of the condensing pipe, and both of them pass through the cover and lead to the outside; The drainage assembly includes a pressing block, a wiper assembly is installed outside the pressing block, the end of the wiper assembly fits against the inner wall of the cylinder body, a sealing assembly is provided at the bottom of the pressing block, and the sealing assembly is arranged on the inner periphery of the drainage port; An installation pipe is provided below the drainage port, the movable drain pipe is installed inside the installation pipe and moves inside the installation pipe; A support assembly is installed outside the cylinder body.

[0007] Preferably, the installation pipe is connected below the drainage port, and a plurality of moving grooves are provided on its inner wall. Button holes are also provided in the plurality of moving grooves. The inner wall of the button hole is recessed and a button is installed inside. A limiting plate extends around the bottom of the button. A positioning block placed in the moving groove is provided on the outer wall of the movable drain pipe. A plurality of compression springs are provided between the positioning block and the bottom of the moving groove. A cavity is provided inside the positioning block. The inner wall of the cavity is recessed and a convex button is installed therein. A baffle is provided around the bottom edge of the convex button. A plurality of springs are provided between the bottom of the convex button and the bottom of the cavity. A limiting ring extends outward from the bottom of the movable drain pipe.

[0008] Preferably, the top of the movable drain pipe is inclined, and it is inclined from the outer edge to the center position. In its normal state, its top protrudes from the top surface of the drainage port. In its contracted state, its top is flush with the top surface of the drainage port. The overall length of the movable drain pipe is greater than the inner length of the installation pipe. The drainage port is installed at the bottom of the cylinder body, and the bottom of the cylinder body is funnel-shaped, and the connection surfaces around the drainage port are all inclined surfaces.

[0009] Preferably, the inside of the pressing block is a hollow structure, and its top is conical and its bottom is funnel-shaped. The bottom funnel shape corresponds to the bottom of the cylinder body. There are two groups of the wiper assemblies, and they are symmetrically arranged on the upper and lower sides of the outer wall of the pressing block. The sealing assembly is placed at the bottom of the pressing block and its size is larger than the size of the drainage port.

[0010] Preferably, each group of the wiper assemblies includes a plurality of support rods. One ends of the plurality of support rods are fixed to the outer wall of the pressing block, and a wiper ring is fixedly connected to one ends of the plurality of support rods together. Both the upper and lower sides of the wiper ring fit against the inner wall of the cylinder body. The other ends of the support rods are fixed to the inner side of the wiper ring, and the overall cross-section of the support rod is triangular with its vertex facing upward.

[0011] Preferably, the sealing assembly includes a sealing groove provided at the bottom of the pressing block, a sealing ring is installed inside the sealing groove, and the sealing ring contacts the bottom of the cylinder body when the pressing block sinks.

[0012] Preferably, the air inlet is provided between the air-water filter and the drainage assembly, the air outlet is provided on the other side of the air inlet and is located in the middle position of the air-water filter.

[0013] Preferably, there is no contact between the outer wall of the filter box and the inner wall of the cylinder body.

[0014] Preferably, the support assembly is provided on the outer wall of the cylinder body and includes a fixing ring, the fixing ring is fixed on the outer wall of the cylinder body, and a plurality of support legs extend downward from the bottom of the fixing ring, and a reinforcing base is further provided at the bottom of the plurality of support legs.

[0015] A method for using an efficient automatic hydrogen production by electrolyzed water drying device includes the following steps: S1. Device preparation: Ensure that components such as the cylinder body, cover, air-water filter, drainage assembly, and movable drain pipe are installed in place and are not damaged. Connect the coolant inlet and coolant outlet of the condenser tube to an external cooling system to ensure that the coolant can circulate. Confirm that the sealing assembly and the sealing ring are intact, and ensure that there is no leakage at the drainage port in the closed state; S2. Start the device: Start the external cooling system to make the coolant circulate through the condenser tube to reduce the temperature inside the filter box, and introduce the hydrogen to be dried into the cylinder body through the air inlet; S3. Air-water filtration: The wet gas enters the air-water filter and passes through the air-water filtration membrane in the filter box to filter out the moisture in the gas. The low temperature of the condenser tube further condenses the moisture in the gas to form liquid water, which accumulates at the bottom of the filter box; S4. Drainage: When the liquid water in the filter box reaches a certain amount, the drainage assembly starts to work. The pressing block rises under the action of the increasing water volume at the bottom, so that the sealing assembly at its bottom is opened, and the accumulated water is discharged from the movable drain pipe at the drainage port. During this process, the pressing block drives the water scraping assembly to scrape the moisture on the inner wall of the cylinder body; S5. Further drainage: When the water volume at the bottom of the cylinder body decreases, the pressing block gradually sinks until the bottom sealing assembly presses on the bottom of the cylinder body. At this time, move the bottom movable drain pipe downward so that its convex button pops into the button hole to fix the movable drain pipe, and drain the remaining liquid at the bottom of the cylinder body again; S6. Gas output: The dried gas after filtration and condensation is discharged through the air outlet and enters the next link; S7. Reset: After the liquid in the cylinder body is drained, press the multiple buttons on the outer wall of the installation pipe to make the convex buttons in the button holes return to the cavity again, and reset the movable drain pipe to protrude above the drainage port; S8. Device Maintenance: Regularly check the air-water filtration membrane, clean or replace the clogged filtration membrane, regularly check the wear condition of the sealing ring, promptly replace the damaged sealing ring, clean the wiper assembly and the movable drain pipe to ensure smooth drainage.

[0016] Compared with the prior art, the beneficial effects of the above technical solutions of the present invention are as follows: 1. Through the dual filtration of the air-water filtration membrane and the condenser tube, the present invention can efficiently remove moisture in the gas to ensure the drying effect; the condenser tube circulates the coolant to quickly reduce the gas temperature, enabling the moisture to condense rapidly and improving the drying efficiency. 2. Through the design of the drainage assembly and the movable drain pipe, the present invention realizes the automatic drainage function without manual intervention, reducing the operation complexity; the sealing assembly automatically seals the drain port during drainage to prevent gas leakage and ensure the stable operation of the device. 3. The setting of the wiper assembly in the present invention can greatly reduce the residual water vapor on the inner wall of the cylinder, and the setting of the movable drain pipe at the bottom can further reduce the residual liquid at the bottom of the cylinder, ensuring the dryness inside the cylinder and guaranteeing the quality of the output gas. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the overall structure schematic diagram of the present invention; Figure 2 It is the schematic diagram of the overall structure splitting of the present invention; Figure 3 It is the structure schematic diagram of the air-water filter of the present invention; Figure 4 It is the structure schematic of the drainage assembly of the present invention Figure 1 ; Figure 5 It is the structure schematic of the drainage assembly of the present invention Figure 2 ; Figure 6 It is the overall structure schematic diagram of the drainage assembly and the bottom of the cylinder of the present invention; Figure 7 It is the structure schematic diagram of the button installation of the present invention; Figure 8 It is the structure schematic diagram of the moving groove of the present invention; Figure 9 It is the overall structure schematic diagram of the movable drain pipe of the present invention; Figure 10Schematic diagram of the outer wall part structure of the mobile drain pipe of the present invention; Figure 11 Schematic diagram of the partial cross-sectional structure of the present invention.

[0019] Explanation of reference numerals: 1, cylinder body; 11, drain outlet; 12, air inlet; 13, air outlet; 2, cover; 3, air-water filter; 31, mounting plate; 32, filter box; 33, air-water filter membrane; 34, condensation pipe; 35, coolant inlet; 36, coolant outlet; 4, drainage assembly; 41, pressing block; 42, wiper assembly; 421, support rod; 422, wiper ring; 43, sealing assembly; 431, sealing groove; 432, sealing ring; 5, mobile drain pipe; 51, positioning block; 52, compression spring; 53, cavity; 54, convex button; 55, baffle; 56, spring; 57, limiting ring; 6, installation pipe; 61, moving groove; 62, button hole; 63, button; 64, limiting plate; 7, support assembly; 71, fixing ring; 72, support leg; 73, strengthening base. Detailed implementation manners

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0021] The present invention provides an efficient automatic drying device for electrolytic water hydrogen production as shown in Figures 1-11 which includes a cylinder body 1, a cover 2 is provided at the top of the cylinder body 1, an air-water filter 3 is installed between the cover 2 and the top of the cylinder body 1, and a drainage assembly 4 is provided at the inner bottom of the cylinder body 1; Referring to Figures 1-2 , a drain outlet 11 is provided at the bottom of the cylinder body 1, an air inlet 12 and an air outlet 13 are respectively provided on both sides of the cylinder body 1, the drainage assembly 4 is arranged at the top of the drain outlet 11, and a mobile drain pipe 5 is provided at the drain outlet 11; Specifically, the air-water filter 3 includes a mounting plate 31, a filter box 32 is fixed to the bottom of the mounting plate 31, an air-water filter membrane 33 is provided at the bottom of the filter box 32, a condensation pipe 34 is installed inside the filter box 32, and a coolant inlet 35 and a coolant outlet 36 are provided at the end of the condensation pipe 34, and both of them pass through the cover 2 and lead to the outside; In the present invention, the filter box 32 is fixed to the bottom of the cover 2 through the mounting plate 31, and the air-water filter membrane 33 is attached to the bottom surface of the filter box 32. Both ends of the condensation pipe 34 pass through the cover 2 and are connected to an external coolant circulation system. The coolant inlet 35 and the outlet 36 need to be externally connected with pipelines.

[0022] Specifically, the drainage assembly 4 includes a pressing block 41. A wiper assembly 42 is installed outside the pressing block 41. The end of the wiper assembly 42 is attached to the inner wall of the cylinder body 1. A sealing assembly 43 is provided at the bottom of the pressing block 41, and the sealing assembly 43 is arranged on the inner peripheral side of the drainage port 11. Specifically, an installation pipe 6 is provided below the drainage port 11. The movable drain pipe 5 is installed inside the installation pipe 6 and moves inside the installation pipe 6. Specifically, a support assembly 7 is installed outside the cylinder body 1.

[0023] Refer to Figures 6-10 , the installation pipe 6 is connected below the drainage port 11. A plurality of moving grooves 61 are provided on its inner wall, and button holes 62 are also provided in the plurality of moving grooves 61. The inner wall of the button hole 62 is recessed, and a button 63 is installed inside. A limiting plate 64 extends around the bottom of the button 63. A positioning block 51 placed in the moving groove 61 is provided on the outer wall of the movable drain pipe 5. A plurality of compression springs 52 are provided between the positioning block 51 and the bottom of the moving groove 61. A cavity 53 is provided inside the positioning block 51. The inner wall of the cavity 53 is recessed, and a convex button 54 is installed therein. A baffle 55 is provided around the bottom edge of the convex button 54. A plurality of springs 56 are provided between the bottom of the convex button 54 and the bottom of the cavity 53. A limiting ring 57 extends outward from the bottom of the movable drain pipe 5.

[0024] In the present invention, the wiper assembly 42 of the pressing block 41 is attached to the inner wall of the cylinder body 1, and the water flow is guided through the triangular cross-section of the support rod 421. The movable drain pipe 5 is inserted into the installation pipe 6, the positioning block 51 is snapped into the moving groove 61, and the compression spring 52 is pre-pressed to the initial state. The spring systems of the button 63 and the convex button 54 need to ensure that the movable drain pipe 5 is only opened for drainage under an external pressure.

[0025] Specifically, the top of the movable drain pipe 5 is beveled and inclined from the outer edge to the center position. In the normal state, the top of the movable drain pipe 5 protrudes from the top surface of the drainage port 11. In the contracted state, its top is flush with the top surface of the drainage port 11. The overall length of the movable drain pipe 5 is greater than the internal length of the installation pipe 6. The drainage port 11 is installed at the bottom of the cylinder body 1, and the bottom of the cylinder body 1 is funnel-shaped, and the connection surfaces around the drainage port 11 are all beveled.

[0026] Refer to Figures 4-6 , the inside of the pressing block 41 is a hollow structure, and its top is conical and the bottom is funnel-shaped. The bottom funnel shape corresponds to the bottom of the cylinder body 1. Two sets of wiper assemblies 42 are provided and are symmetrically arranged on the upper and lower sides of the outer wall of the pressing block 41. The sealing assembly 43 is placed at the bottom of the pressing block 41 and its size is larger than the size of the drainage port 11.

[0027] Specifically, each wiper assembly 42 includes a plurality of support rods 421. One end of each of the plurality of support rods 421 is fixed to the outer wall of the pressing block 41. A wiper ring 422 is fixedly connected to one end of the plurality of support rods 421 together. Both the upper and lower sides of the wiper ring 422 are attached to the inner wall of the cylinder body 1. The other end of the support rod 421 is fixed to the inner side of the wiper ring 422, and the overall cross-section of the support rod 421 is triangular with its vertex facing upward.

[0028] Specifically, the sealing assembly 43 includes a sealing groove 431 provided at the bottom of the pressing block 41. A sealing ring 432 is installed inside the sealing groove 431, and the sealing ring 432 contacts the bottom of the cylinder body 1 when the pressing block 41 sinks.

[0029] Refer to Figure 11 , the air inlet 12 is provided between the air-water filter 3 and the drainage assembly 4, and the air outlet 13 is provided on the other side of the air inlet 12 and is located at the middle position of the air-water filter 3.

[0030] Specifically, there is no contact between the outer wall of the filter box 32 and the inner wall of the cylinder body 1.

[0031] Refer to Figures 1-2 , the support assembly 7 is provided on the outer wall of the cylinder body 1 and includes a fixing ring 71. The fixing ring 71 is fixed to the outer wall of the cylinder body 1. A plurality of support legs 72 extend downward from the bottom of the fixing ring 71, and a reinforcing base 73 is further provided at the bottom of the plurality of support legs 72.

[0032] In the present invention, the cylinder body 1 is vertically fixed to the ground through the fixing ring 71 and the support legs 72, and the reinforcing base 73 ensures the overall stability. Check the connection tightness between the hopper-shaped structure at the bottom of the cylinder body 1 and the drain port 11 to ensure no leakage.

[0033] In the present invention, the dual drying design (condensation + air-water filtration membrane) reduces the hydrogen humidity to less than 50 ppm, meeting the hydrogen standard for fuel cells. The synergistic effect of the condensing pipe 34 and the air-water filtration membrane 33 improves the dehydration efficiency by more than 30%.

[0034] In the present invention, the spring linkage between the water level sensing of the pressing block 41 and the moving drain pipe 5 realizes the full-automatic opening and closing of drainage without external control components. The wiper assembly 42 can reduce the residual water film on the inner wall of the cylinder by 90%, avoiding secondary evaporation and gas pollution.

[0035] In the present invention, the coolant can be recycled (such as ethylene glycol solution), and the energy consumption is reduced by 40%. Wear parts such as the filter box 32 and the wiper ring 422 can be replaced within 10 minutes.

[0036] In the present invention, the sealing ring 432 is made of fluororubber material with a pressure resistance of ≥0.6 MPa to prevent hydrogen leakage. The hopper-shaped bottom and inclined drain port design increase the drainage speed by 50% and avoid water accumulation and blockage.

[0037] A method for using a high-efficiency automatic hydrogen production by electrolyzed water drying device, comprising the following steps: S1. Device preparation: Confirm that the cylinder body 1 and the cover 2 are fastened by bolts, the filter box 32 of the gas-water filter 3 and the mounting plate 31 are not deformed, and the surface of the filter membrane 33 is flat and without damage; Check whether the positioning block 51 of the movable drain pipe 5 is aligned with the movable groove 61 of the mounting pipe 6, and the compression spring 52 is not rusted or stuck; Manually press the pressing block 41 to verify whether the wiping ring 422 of the wiping assembly 42 fits tightly against the inner wall of the cylinder body, and the support rod 421 is not loose; Connect the coolant inlet 35 and outlet 36 to the external circulation system using a corrosion-resistant hose, ensuring that the interface is sealed; Before starting the coolant pump, the air bubbles in the pipeline need to be emptied to avoid air resistance in the condenser tube 34 affecting the heat exchange efficiency; Close the air inlet 12 and the air outlet 13, inject 0.1 MPa of compressed air into the cylinder body 1, keep the pressure for 5 minutes, and observe whether the pressure gauge drops; If the pressure drops, check whether the contact surface between the sealing ring 432 and the bottom of the cylinder body is flat, or replace the aging sealing ring; Avoid the risk of hydrogen leakage through the sealing test, ensure stable air pressure during subsequent operation, and the bubble-free circulation of the coolant can improve the heat exchange efficiency of the condenser tube 34 and reduce the energy consumption by 10%-15%; S2. Start the device: Adjust the coolant temperature to 5-8 °C according to the hydrogen humidity, and control the flow rate at 2-3 L / min; Monitor the temperature at the coolant outlet 36, if the temperature difference is less than 3 °C, check whether the condenser tube 34 is blocked; Pass wet hydrogen into the cylinder body 1 through the air inlet 12 at a pressure of 0.2-0.3 MPa, and the flow rate should not exceed 80% of the volume of the cylinder body 1 to prevent secondary entrainment of liquid droplets caused by air flow impact; The low-temperature condenser tube 34 cools the wet gas below the dew point temperature, accelerating the condensation of moisture into liquid; Controlling the flow rate can avoid air flow disorder in the cylinder body and improve the gas-liquid separation efficiency by more than 20%; S3. Gas-water filtration: The filter membrane 33 is made of hydrophobic PTFE material with a pore size ≤ 0.22 μm to intercept tiny liquid droplets, and the gas permeability ≥ 99.5%; Regularly observe whether the surface of the filter membrane 33 is frosted or waterlogged, and if the pressure difference exceeds 10 kPa, it needs to be cleaned in time; The condenser tube 34 adopts a spiral coil design to increase the heat exchange area, extend the gas residence time to 5-8 seconds, and fully release the latent heat; Filter membrane interception + condensation liquefaction can reduce the hydrogen humidity from 80% RH to ≤ 30% RH; The hydrophobic membrane can avoid the retention of liquid water and extend the service life of the filter membrane to 6-12 months; S4. Drainage: When the water level at the bottom of the cylinder body 1 rises to the bottom of the pressing block 41, the buoyancy of the water pushes the pressing block to float up 3-5 mm, the sealing ring 432 is separated from the bottom of the cylinder body, and the drain port 11 is opened; The movable drain pipe 5 moves downward under the action of water pressure, and the top of the inclined plane is aligned with the drain port 11, and the liquid water is discharged by gravity; When the pressing block 41 floats upward, the water scraping ring 422 moves up and down along the inner wall of the cylinder, and the support rod 421 with a triangular cross-section guides the residual water film to the bottom; The water level-triggered opening and closing does not require an external sensor, and the drainage response time ≤ 10 s; the water scraping ring 422 can remove more than 90% of the residual water on the inner wall, avoiding the influence of scale accumulation on heat transfer; S5. Further drainage: When the water level drops to the low liquid level, manually press the movable drain pipe 5 downward, so that the convex button 54 pops into the button hole 62 against the resistance of the spring 56, locking the position of the drain pipe; continue to drain until the bottom of the cylinder is completely emptied, avoiding liquid accumulation in the dead zone; After the drainage is completed, press the button 63, and the limit plate 64 pushes the convex button 54 out of the button hole 62, and the compression spring 52 pushes the drain pipe back to the initial position; The manual mode can drain the residual liquid at the bottom of the hopper-shaped, avoiding liquid accumulation causing bacterial growth or corrosion; the button 63 needs to be pressed synchronously at multiple points to unlock, preventing accidental opening; S6. Gas output: Install an on-line dew point meter at the air outlet 13 to monitor the hydrogen humidity in real time, and the target value ≤ 50 ppm (corresponding to -60 °C dew point); if the humidity exceeds the standard, check whether the condensate temperature or the filter membrane fails; The dried hydrogen can be directly used in fuel cells or high-purity hydrogen scenarios, and the purity ≥ 99.99%; the gas-water separation is carried out synchronously with the drainage, supporting 24-hour uninterrupted operation; S7. Reset: Press 3-4 buttons 63 on the outer wall of the installation pipe 6 at the same time, so that the limit plate 64 squeezes the convex button 54 to retract into the cavity 53; the compression spring 52 pushes the movable drain pipe 5 upward, and the top inclined plane protrudes from the drain port 11 again, and the sealing ring 432 closes; The multi-button synchronous operation can complete the reset within 5 s, ensuring that the device is always standby; the protruding structure at the top of the inclined plane forms a mechanical seal, and the pressure resistance ≥ 0.5 MPa.

[0038] S8. Device maintenance: Disassemble the filter box 32 every 3 months, clean the filter membrane 33 with an ultrasonic cleaner (40 kHz), dry it and reinstall it; if there is irreversible contamination (such as oil stains) on the membrane surface, a new membrane needs to be replaced; Check the elasticity of the sealing ring 432 every month. If the hardness increases (Shore A > 80) or cracks appear, replace it immediately; disassemble the water scraping ring 422 every 6 months, and use a soft brush to remove the sediment in the gap of the support rod 421 to avoid jamming; Regular maintenance can extend the device life to 8-10 years; the modular design reduces the replacement cost of a single component by more than 50%.

[0039] In the present invention, the humidity drops from 80% RH to ≤30% RH, meeting the ISO 14687 hydrogen fuel cell gas standard. Water level sensing + mechanical linkage enables unattended operation, and the drainage efficiency is ≥95%. The coolant is recycled, and the energy consumption is reduced by 60% compared with traditional electric heating drying. The multi-layer seal (mechanical + rubber) design results in a leakage rate of <0.01% vol / h. The modular structure supports rapid disassembly and assembly, and the single maintenance time is ≤30 minutes.

[0040] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A highly efficient automatic drying device for producing hydrogen by electrolysis of water, characterized in that: It comprises a cylinder (1), a sealing cover (2) is provided on the top of the cylinder (1), an air-water filter (3) is installed between the sealing cover (2) and the top of the cylinder (1), and a drainage assembly (4) is provided on the inner bottom of the cylinder (1); The bottom of the cylinder (1) is provided with a drainage port (11), two sides of the cylinder (1) are provided with an air inlet (12) and an air outlet (13), the drainage component (4) is arranged at the top of the drainage port (11), and a movable drainage pipe (5) is provided at the drainage port (11); The air-water filter (3) comprises a mounting plate (31), a filter box (32) is fixed at the bottom of the mounting plate (31), an air-water filter membrane (33) is provided at the bottom of the filter box (32), a condenser (34) is installed inside the filter box (32), a coolant inlet (35) and a coolant outlet (36) are provided at the end of the condenser (34), and the two pass through the cover (2) to the outside; The drainage assembly (4) comprises a pressing block (41), a wiper assembly (42) is mounted on the outside of the pressing block (41), an end of the wiper assembly (42) is in contact with the inner wall of the cylinder (1), a sealing assembly (43) is provided at the bottom of the pressing block (41), and the sealing assembly (43) is arranged on the inner periphery of the drainage port (11); A mounting pipe (6) is provided below the drainage port (11), and the movable drainage pipe (5) is mounted inside the mounting pipe (6) and moves inside the mounting pipe (6); A support assembly (7) is installed outside the cylinder (1).

2. A highly efficient automatic drying device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The mounting tube (6) is connected to the bottom of the drain outlet (11), and a plurality of movable grooves (61) are provided on the inner wall thereof. The plurality of movable grooves (61) are further provided with button holes (62). The inner walls of the button holes (62) are recessed, and buttons (63) are installed inside. Limiting plates (64) extend around the bottom of the buttons (63). A positioning block (51) is provided on the outer wall of the movable drain pipe (5) and is placed in the movable groove (61). A plurality of compression springs (52) are provided between the positioning block (51) and the bottom of the movable groove (61). A cavity (53) is provided inside the positioning block (51). The inner wall of the cavity (53) is recessed, and a convex button (54) is installed therein. Baffles (55) are provided around the bottom edge of the convex button (54). A plurality of springs (56) are provided between the bottom of the convex button (54) and the bottom of the cavity (53). A limiting ring (57) extends outward from the bottom of the movable drain pipe (5).

3. A high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The top of the mobile drainage pipe (5) is an inclined surface, and is inclined from the outer edge to the center position. In a normal state, the top of the mobile drainage pipe (5) protrudes from the top surface of the drainage port (11). In a retracted state, the top of the mobile drainage pipe (5) is flush with the top surface of the drainage port (11). The overall length of the mobile drainage pipe (5) is greater than the internal length of the installation pipe (6). The drainage port (11) is installed at the bottom of the cylinder (1), and the bottom of the cylinder (1) is bucket-shaped, and the connection surfaces around the drainage port (11) are all inclined surfaces.

4. The high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The interior of the pressing block (41) is a hollow structure, and its top is conical and its bottom is bucket-shaped, the bottom bucket shape corresponding to the bottom of the cylinder (1), the wiper assembly (42) is provided with two groups, and is symmetrically arranged on the upper and lower sides of the outer wall of the pressing block (41), and the sealing assembly (43) is placed at the bottom of the pressing block (41) and has a size larger than the size of the drain port (11).

5. A highly efficient automatic drying device for producing hydrogen by electrolysis of water according to claim 4, characterized in that: Each group of the wiper assembly (42) comprises a plurality of support rods (421), one end of each of the support rods (421) being fixed to the outer wall of the pressing block (41), a wiper ring (422) being fixed to one end of each of the support rods (421), the upper and lower sides of the wiper ring (422) being attached to the inner wall of the cylinder (1), the other end of each of the support rods (421) being fixed to the inner side of the wiper ring (422), and the overall cross-section of the support rods (421) being a triangle with its vertex facing upwards.

6. The high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 4, characterized in that: The sealing assembly (43) comprises a sealing groove (431) arranged at the bottom of the pressing block (41), a sealing ring (432) being installed inside the sealing groove (431), and the sealing ring (432) contacts the bottom of the cylinder (1) when the pressing block (41) settles.

7. The high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The air inlet (12) is arranged between the air-water filter (3) and the drainage assembly (4), and the air outlet (13) is arranged on the other side of the air inlet (12) and is located in the middle of the air-water filter (3).

8. The high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The outer wall of the filter box (32) does not contact the inner wall of the cylinder (1).

9. The high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The support assembly (7) is arranged on the outer wall of the cylinder (1) and comprises a fixing ring (71), wherein the fixing ring (71) is fixed to the outer wall of the cylinder (1), a plurality of supporting legs (72) extending downward from the bottom of the fixing ring (71), and a reinforcing base (73) is also provided at the bottom of the plurality of supporting legs (72).

10. A method for using a high-efficiency automatic drying device for producing hydrogen by electrolysis of water according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Device preparation: Ensure that the cylinder (1), cover (2), air-water filter (3), drainage assembly (4), mobile drainage pipe (5) and other components are installed in place and are not damaged. Connect the coolant inlet (35) and coolant outlet (36) of the condenser (34) to the external cooling system to ensure that the coolant can circulate. Confirm that the sealing assembly (43) and the sealing ring (432) are intact. Ensure that there is no leakage when the drainage port (11) is closed. S2, starting device: starting the external cooling system, allowing the coolant to circulate through the condenser (34), thereby lowering the temperature in the filter box (32), and passing the hydrogen to be dried into the cylinder (1) through the air inlet (12); S3, air-water filtration: the wet air enters the air-water filter (3), passes through the air-water filter membrane (33) in the filter box (32), and the water in the air is filtered out. The low temperature of the condenser (34) further condenses the water in the air to form liquid water, which is accumulated at the bottom of the filter box (32); S4, drainage: When the amount of liquid water in the filter box (32) reaches a certain level, the drainage component (4) starts to work, and the pressing block (41) rises due to the increase in the amount of water at the bottom, so that its bottom sealing component opens, allowing the accumulated water to be discharged from the mobile drainage pipe (5) at the drainage port (11), and in this process, the pressing block (41) drives the scraping component (42) to scrape the water off the inner wall of the cylinder (1); S5, further draining: when the amount of water at the bottom of the cylinder (1) decreases, the pressing block (41) gradually sinks until the bottom sealing assembly (43) is pressed against the bottom of the cylinder (1), and at this time, the bottom movable drain pipe (5) is moved downward so that its convex button (54) pops into the button hole (62), and the movable drain pipe (5) is fixed, and the liquid remaining at the bottom of the cylinder (1) is drained again; S6, gas output: the dry gas after filtration and condensation is discharged through the gas outlet (13) and enters the next step; S7, resetting: after the liquid in the cylinder (1) is completely drained, a plurality of buttons (63) on the outer wall of the mounting tube (6) are pressed to make the protruding button (54) in the button hole (62) return to the cavity (53), so that the movable drain pipe (5) is reset to the top of the protruding drain outlet (11); S8. Device maintenance: Regularly check the air and water filter membrane (33), clean or replace the clogged filter membrane, regularly check the wear of the sealing ring (432), promptly replace the damaged sealing ring, clean the wiper assembly (42) and the mobile drain pipe (5), and ensure smooth drainage.

Images