Liquid-liquid separation device for hydrogen production through alkaline electrolysis of water
By designing the float pressure relief assembly and support plate structure, the sealing problem of the alkaline water electrolysis hydrogen production gas-liquid separation device was solved, realizing automatic adjustment of the sealing method, improving safety and reliability, and reducing energy consumption.
Patent Information
- Application Number
- CN202511940155.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-22
- Publication Date
- 2026-02-10
AI Technical Summary
Existing alkaline water electrolysis hydrogen production gas-liquid separation devices cannot adaptively seal the gas phase outlet, resulting in reduced overall device safety.
The device employs a float-type pressure relief assembly and a support plate structure. By sliding the float up and down, the sealing method of the gas phase outlet is automatically adjusted. Combined with a wire mesh demister and an airbag system, gas-liquid separation and the collection and discharge of alkaline mist are achieved, ensuring the safety and stability of the device.
It enables automatic and intelligent adjustment of the float position and sealing method, improving the operational safety and reliability of the device, reducing the corrosion of equipment by alkaline mist, simplifying the process and reducing energy consumption.
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Figure CN121496494A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of separation technology, in particular to a hydrogen gas-liquid separation device for alkaline electrolysis of water. BACKGROUND
[0002] Alkaline electrolysis of water to produce hydrogen technology has become one of the mainstream technologies in the field of industrial hydrogen production due to its high maturity, stable operation and other advantages, and is widely used in new energy storage, chemical raw material preparation and other scenes. In the traditional alkaline electrolysis of water to produce hydrogen system, high concentration of alkali solution is used as electrolyte, and the electrolyte needs to completely fill the electrolytic cell to ensure full electrode wetting and ion conduction efficiency. A "liquid seal" is formed by the static pressure of the liquid column to effectively block the hydrogen and oxygen gases on both sides, avoid the formation of explosive mixtures, and assist in bubble aggregation and rupture to complete the preliminary separation of gas and liquid.
[0003] The existing hydrogen gas-liquid separation device for alkaline electrolysis of water, the gas-liquid mixture produced by the electrolytic cell first enters the gas-liquid separator, and the mixture is introduced through the inlet pipe and hits the flow divider. At the same time, the gas separated from the alkali solution continuously floats upward due to its smaller density, and finally gathers in the top space of the separator and is discharged from the gas phase outlet above the device. However, since the gas phase outlet cannot be self-adaptively sealed, the liquid level fluctuation of the gas-liquid separator will cause the liquid seal height of the gas phase outlet to change, which cannot maintain stable sealing, and may also reduce the overall safety of the device. SUMMARY
[0004] In view of the deficiencies of the prior art, the present application provides a hydrogen gas-liquid separation device for alkaline electrolysis of water, which solves the problem of reduced overall safety of the device due to the inability to self-adaptively seal the gas phase outlet of the existing hydrogen gas-liquid separation device for alkaline electrolysis of water.
[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: a hydrogen gas-liquid separation device for alkaline electrolysis of water, comprising a protective shell, a gas phase outlet fixedly connected inside the protective shell, a flange ring fixedly connected outside the gas phase outlet, a sleeve fixedly connected to the bottom end of the gas phase outlet, the sleeve being fixedly connected inside the protective shell, a support plate fixedly connected inside the gas phase outlet, a pressure relief assembly provided inside the support plate, the pressure relief assembly being slidably connected outside the gas phase outlet, the pressure relief assembly comprising a floating ball, the floating ball being slidably connected to the inside of the support plate, the floating ball being slidably connected to the inside of the gas phase outlet, an elastic member fixedly connected to the inner top wall of the floating ball, and a sliding plate fixedly connected to the bottom end of the elastic member.
[0006] Through the above scheme: the protective shell is a protection and mounting frame of the overall structure, which provides physical protection for the internal components, avoids collision and foreign matter invasion, and strengthens sealing performance to prevent gas phase leakage; the gas phase outlet is used for transmitting gas, and the externally fixed flange ring is used for docking with external pipelines or equipment, and sealing connection is realized through bolts to ensure the sealing performance of gas transmission and the stability between pipelines.
[0007] Preferably, the outer sliding connection of the sliding plate is connected to the inside of the floating ball, and the inside of the floating ball is fixedly connected with the gas guide pipe.
[0008] Preferably, the inside of the gas phase outlet is fixedly connected with the fixing frame, the inside of the fixing frame is fixedly connected with the wire mesh demister, and the inside of the fixing frame is provided with an auxiliary assembly.
[0009] Preferably, the auxiliary assembly comprises a fixed plate, the outside of the fixed plate is fixedly connected to the inside of the fixing frame, the inner bottom wall of the fixed plate is provided with an air bag, the top end of the air bag is fixedly connected with a lifting block, the bottom end of the air bag is fixedly connected with a lifting plate, the top end of the lifting block is rotatably connected with a rotating plate, and the top end of the rotating plate is rotatably connected to the inside of the fixing frame.
[0010] Preferably, the outside of the lifting plate is slidingly connected to the inside of the fixing frame, and the outside of the lifting block is slidingly connected to the inside of the fixed plate and the fixing frame.
[0011] Preferably, the bottom end of the protective shell is fixedly connected with a supporting leg, and the inside of the sleeve is fixedly connected with a baffle.
[0012] Preferably, one end of the sleeve is fixedly connected with a liquid mixture inlet, and the inside of the sleeve is fixedly connected with a liquid phase outlet.
[0013] Preferably, the outside of the liquid phase outlet is fixedly connected to the inside of the protective shell, and the outside of the liquid phase outlet is fixedly connected to the inside of the flange ring.
[0014] Preferably, the inside of the protective shell is fixedly connected with a blowdown pipeline, one end of the blowdown pipeline is fixedly connected to the inside of the gas phase outlet and the fixing frame, and the other end of the blowdown pipeline is fixedly connected with a blowdown port.
[0015] Preferably, the inside of the blowdown port is fixedly connected with a valve, the outside of the blowdown port and the valve is fixedly connected to the inside of the protective shell, and the bottom end of the blowdown port is fixedly connected to the inside of the flange ring.
[0016] Working principle: the mixed liquid enters the inside of the equipment through the liquid mixture inlet, the gas is separated from the liquid through the baffle, and the separated substances are discharged through the gas phase outlet and the liquid phase outlet. At the same time, the gas phase outlet can block the alkali mist, and the alkali mist can be transmitted to the valve inside through the blowdown pipe to be discharged.
[0017] The application provides a hydrogen production liquid separation device for alkaline electrolytic water.
[0018] 1、The gas phase outlet supports the fixing of the support plate, and assists the up-down sliding of the floating ball. When the floating ball contacts the gas, it will slide upwards, so that the gas is discharged. When the floating ball is on the upper support plate, the gas will drive the sliding plate to slide upwards synchronously to press the elastic member, and the gas is discharged through the gas guide pipe, so that the position and sealing mode of the floating ball can be automatically and intelligently adjusted, the overall safety of the device is further improved, and the operation safety and reliability of the device under various working conditions are greatly improved.
[0019] 2、The lifting plate can prevent the alkali mist from flowing out from the inside of the fixed frame. When the gas bag is extruded by the lifting plate, the lifting block and the rotating plate will slide upwards, and the rotating plate will rotate in the fixed frame. Therefore, the alkali mist in the gas can be blocked by the wire mesh demister, so that the alkali mist can be collected and discharged, the hydrogen purification equipment, gas storage facilities and pipelines are prevented from being corroded by the alkali, and the service life of the overall system is prolonged.
[0020] 3、The liquid mixture inlet and the sleeve can prevent the mixed liquid from leaking, and the mixed liquid can be preliminarily separated under the action of the baffle, and the separated liquid is discharged through the liquid phase outlet, so that the mixed liquid can be preliminarily separated, the circulation flow of the alkali in the system is significantly reduced, the process is simplified, and the energy consumption is reduced. DETAILED DESCRIPTION
[0021] Figure 1 It is a structure perspective view of the application;
[0022] Figure 2 It is a partial structure schematic view of the protective shell of the application;
[0023] Figure 3 It is Figure 2 the enlarged schematic view of A in the middle;
[0024] Figure 4 It is a partial structure schematic view of the sliding plate of the application;
[0025] Figure 5 It is a partial structure schematic view of the wire mesh demister of the application;
[0026] Figure 6This is a schematic diagram of a partial structure of the airbag of the present invention;
[0027] Figure 7 This is a partial structural diagram of the liquid mixture inlet of the present invention;
[0028] Figure 8 This is a partial structural diagram of the sewage outlet of the present invention.
[0029] The components are as follows: 1. Protective shell; 2. Gas phase outlet; 3. Flange ring; 4. Support plate; 5. Pressure relief assembly; 51. Float; 52. Elastic element; 53. Sliding plate; 54. Gas guide pipe; 6. Fixing frame; 7. Wire mesh demister; 8. Auxiliary components; 81. Fixing plate; 82. Airbag; 83. Lifting block; 84. Lifting plate; 85. Rotating plate; 9. Support leg; 10. Liquid mixture inlet; 11. Sleeve; 12. Baffle; 13. Liquid phase outlet; 14. Drainage pipe; 15. Valve; 16. Drain outlet. Detailed Implementation
[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0031] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides an alkaline water electrolysis hydrogen production gas-liquid separation device, including a protective shell 1. A gas phase outlet 2 is fixedly connected inside the protective shell 1. A flange ring 3 is fixedly connected to the outside of the gas phase outlet 2. A sleeve 11 is fixedly connected to the bottom end of the gas phase outlet 2. The outside of the sleeve 11 is fixedly connected to the inside of the protective shell 1. A support plate 4 is fixedly connected to the inside of the gas phase outlet 2. A pressure relief assembly 5 is disposed inside the support plate 4. The outside of the pressure relief assembly 5 is slidably connected to the inside of the gas phase outlet 2. The pressure relief assembly 5 includes a float 51. The bottom end of the float 51 is slidably connected to the inside of the support plate 4. The outside of the float 51 is slidably connected to the inside of the gas phase outlet 2. An elastic element 52 is fixedly connected to the inner top wall of the float 51. A sliding plate 53 is fixedly connected to the bottom end of the elastic element 52.
[0032] Specifically, the protective shell 1 has a layer that resists corrosion from alkaline media, preventing leakage of alkaline solution or contact with vapor during electrolysis and avoiding corrosion of the protective shell 1. It also has a moisture-proof and rust-proof layer that isolates water vapor from contact with other components, preventing oxidation and rust. Meanwhile, the gas phase outlet 2 is connected to other equipment via flange ring 3 and bolts, preventing gas leakage. Furthermore, the support plates 4 are symmetrically distributed inside the gas phase outlet 2, and the support plates 4 can restrict the up-and-down sliding of the float 51. At the same time, the support plates 4 and the float 51 can completely seal the inside of the gas phase outlet 2. The contact surfaces of the support plates 4, the float 51, and the sliding plate 53 with the air are surface hardened and chemically plated with nickel and phosphorus, which can greatly improve their wear resistance and service life. The sliding plate 53 will slide inside the float 51, and the sliding groove opened inside the float 51 effectively prevents the sliding plate 53 from shifting when sliding up and down. The elastic element 52 is composed of a support spring, and the elastic element 52 can withstand a pressure of 1.4-1.7MPa and compression.
[0033] Please see the appendix Figure 2 -Appendix Figure 4 The sliding plate 53 is slidably connected to the outside of the float 51, and the float 51 is fixedly connected to the inside of the air guide tube 54.
[0034] Specifically, when the gas drives the float 51 to its highest point, the gas will cause the sliding plate 53 to slide upward and compress the elastic element 52. At the same time, the sliding plate 53 will expose the gas guide pipe 54, and the gas can enter the gas phase outlet 2 through the gas guide pipe 54. This can prevent the device pressure from abnormally rising and exceeding the threshold, thus avoiding damage to the internal device. The gas guide pipe 54 can ensure smooth gas flow and assist in the safe venting effect when the device pressure is too high.
[0035] Please see the appendix Figure 4 -Appendix Figure 6 A fixed frame 6 is fixedly connected inside the gas phase outlet 2, a wire mesh demister 7 is fixedly connected inside the fixed frame 6, and an auxiliary component 8 is provided inside the fixed frame 6.
[0036] Specifically, the gas phase outlet 2 is used to support and fix the bracket 6, and the bracket 6 has a wire mesh demister 7 inside. The wire mesh demister 7 can block the alkaline mist in the gas, and the alkaline mist can be stored through the auxiliary component 8. At the same time, the bracket 6 has a layer that resists the corrosion of alkaline media and a moisture-proof and rust-proof layer inside, which improves the service life of the bracket 6.
[0037] Please see the appendix Figure 4 -Appendix Figure 6The auxiliary component 8 includes a fixing plate 81, which is externally fixedly connected to the inside of the fixing frame 6. An airbag 82 is provided on the inner bottom wall of the fixing plate 81. A lifting block 83 is fixedly connected to the top of the airbag 82. A lifting plate 84 is fixedly connected to the bottom of the airbag 82. A rotating plate 85 is rotatably connected to the top of the lifting block 83. The top of the rotating plate 85 is rotatably connected to the inside of the fixing frame 6.
[0038] Specifically, the fixing frame 6 is used to support and fix the fixing plate 81 and assist the rotating plate 85 in rotating. The fixing frame 6 has an air vent and a rotating groove inside, which allows the rotating plate 85 to rotate when sliding upward. At the same time, the rotating plate 85 supports the lifting block 83, and the lifting block 83 is connected to the air bag 82. When the air bag 82 is compressed, it drives the lifting block 83 and the rotating plate 85 to slide upward synchronously. The rotating plate 85 will rotate inside the fixing frame 6, allowing gas to enter the wire mesh demister 7 through the rotating plate 85 and the fixing frame 6 for alkaline mist separation. Then, the air bag 82 and the lifting plate 84 are connected by a special rope. The rope has a layer that resists the corrosion of alkaline media and a moisture-proof and rust-proof layer to prevent breakage during long-term use. When there is no gas flow, the alkaline mist can flow into the interior of the fixing frame 6 through the pipe inside the fixing plate 81, thus storing the alkaline mist.
[0039] Please see the appendix Figure 4 -Appendix Figure 6 The lifting plate 84 is externally slidably connected to the inside of the fixed frame 6, and the lifting block 83 is externally slidably connected to the inside of the fixed plate 81 and the fixed frame 6;
[0040] Specifically, when the gas blows the lifting plate 84 upward, the lifting plate 84 will rise vertically and compress the air bag 82, causing the lifting block 83 to slide upward steadily. When the lifting plate 84 rises and deviates, the gas will cause the air bag 82 to compress and cause the lifting block 83 to rise. At the same time, the lifting block 83 is rotatably connected to the rotating plate 85, allowing the rotating plate 85 to rotate. The air vent inside the rotating plate 85 is connected to the air vent inside the fixed frame 6, thereby enabling the gas to flow into the wire mesh demister 7. When there is no gas, the alkaline mist will flow downward under the influence of gravity.
[0041] Please see the appendix Figure 6 -Appendix Figure 8 The bottom of the protective shell 1 is fixedly connected to a support leg 9, and the inside of the sleeve 11 is fixedly connected to a baffle 12;
[0042] Specifically, the protective shell 1 is used to assist in fixing the support leg 9, and the bottom of the support leg 9 has anti-slip texture to prevent the device from being displaced by the operator during use. At the same time, the protective shell 1 is used to fix the support sleeve 11, and the sleeve 11 is used to fix the baffle 12. Under the action of the internal structure of the baffle 12, the mixed liquid can be separated. Meanwhile, the sleeve 11 is used to receive the gas-liquid mixture transmitted by the liquid mixture inlet 10, forming a closed transmission space to prevent the mixed liquid from leaking.
[0043] Please see the appendix Figure 6 -Appendix Figure 8 One end of the sleeve 11 is fixedly connected to a liquid mixture inlet 10, and the inside of the sleeve 11 is fixedly connected to a liquid phase outlet 13;
[0044] Specifically, the sleeve 11 is connected to the liquid mixture inlet 10 and serves to stably receive the mixed liquid. The inside of the sleeve 11 is connected to the liquid phase outlet 13. When the mixed liquid is separated, the separated liquid enters the liquid phase outlet 13 under its own gravity and enters other equipment under the action of the liquid phase outlet 13.
[0045] Please see the appendix Figure 6 -Appendix Figure 8 The external fixed connection of the liquid phase outlet 13 is to the inside of the protective housing 1, and the external fixed connection of the liquid phase outlet 13 is to the inside of the flange ring 3;
[0046] Specifically, the protective housing 1 is used to support and fix the liquid phase outlet 13, and the liquid phase outlet 13 can be connected to other equipment through the flange ring 3, and the liquid phase outlet 13 is protected from damage under the protection of the protective housing 1.
[0047] Please see the appendix Figure 6 -Appendix Figure 8 The protective shell 1 has a drain pipe 14 fixedly connected inside. One end of the drain pipe 14 is fixedly connected to the gas phase outlet 2 and the inside of the fixed frame 6, and the other end of the drain pipe 14 is fixedly connected to a drain port 16.
[0048] Specifically, the protective shell 1 is used to support and fix the sewage pipe 14, and one end of the sewage pipe 14 passes through the gas phase outlet 2 and is connected to the fixing frame 6. At the same time, the other end of the sewage pipe 14 is connected to the sewage outlet 16. The sewage pipe 14 can concentrate and transport the alkaline mist intercepted by the wire mesh demister 7 to avoid the alkaline mist from accumulating inside the device. The sewage outlet 16 can discharge the alkaline mist from inside the equipment.
[0049] Please see the appendix Figure 6 -Appendix Figure 8A valve 15 is fixedly connected inside the drain outlet 16. The drain outlet 16 and the valve 15 are fixedly connected to the outside of the protective housing 1. The bottom end of the drain outlet 16 is fixedly connected to the inside of the flange ring 3.
[0050] Specifically, the drain outlet 16 is used to support and fix the valve 15, and the valve 15 can control whether the alkaline mist inside the drain outlet 16 is discharged. At the same time, the protective shell 1 is used to support and fix the valve 15 and protect the valve 15 from contact with external corrosive gases, thereby improving the service life of the valve 15.
[0051] Workflow: First, the mixed liquid is conveyed into the sleeve 11 through the liquid mixture inlet 10. Under the action of the baffle 12, the mixed liquid can be initially separated and discharged from the liquid phase outlet 13 by the gravity of the liquid itself. At the same time, the gas will flow upward and be discharged from the gas phase outlet 2. This can achieve the effect of initial separation of the mixed liquid, significantly reduce the circulation flow of alkali in the system, simplify the process and reduce energy consumption.
[0052] Simultaneously, the gas causes the float 51 to slide from the inside of the gas phase outlet 2, and the gas continues to flow upward from the outside of the float 51. The support plate 4 is used to limit the vertical sliding range of the float 51. When the discharged gas is too large, the float 51 will press against the inside of the upper support plate 4, and the float 51 can completely block the gas phase outlet 2. When the gas pressure exceeds the preset safety threshold, the gas will squeeze the sliding plate 53 to slide upward and drive the elastic element 52 to compress, and completely expose the gas guide tube 54 inside the float 51, allowing the gas to flow back into the gas phase outlet 2 through the gas guide tube 54. When there is no gas, the float 51 will descend by its own weight and stick tightly to the inside of the lower support plate 4, completely blocking the gas phase outlet 2 and preventing the gas from re-entering the sleeve 11. This achieves the effect of automatically and intelligently adjusting the position and sealing method of the float 51, further improving the overall safety of the device and greatly improving the operational safety and reliability of the device under various working conditions.
[0053] Next, the gas will drive the lifting plate 84 to slide upward. At the same time, the gas and the lifting plate 84 will compress the air bag 82, and the air bag 82 will drive the lifting block 83 and the rotating plate 85 to slide upward. The fixed frame 6 has a rotating groove inside, which can assist the rotating plate 85 to slide upward and rotate. When the rotating plate 85 rotates to the predetermined position, the gas can enter the fixed frame 6 through the ventilation flange ring 3 inside the rotating plate 85. Then, the gas will pass through the wire mesh demister 7 to block the alkaline mist. When there is no gas, the alkaline mist will flow downward by gravity and flow into the fixed plate 81 at the angle of the top edge of the rotating plate 85. It will then flow into the fixed frame 6 through the channel opened inside the fixed plate 81 and into the drain outlet 16 under the transmission of the drain pipe 14. The discharge of alkaline mist can be controlled by the valve 15, thereby achieving the effect of preliminary separation of the mixed liquid, significantly reducing the circulation flow of alkaline liquid in the system, simplifying the process and reducing energy consumption.
[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An alkaline water electrolysis hydrogen production gas-liquid separation device, comprising a protective outer shell (1), characterized in that: A gas phase outlet (2) is fixedly connected inside the protective shell (1). A flange ring (3) is fixedly connected to the outside of the gas phase outlet (2). A sleeve (11) is fixedly connected to the bottom end of the gas phase outlet (2). The outside of the sleeve (11) is fixedly connected to the inside of the protective shell (1). A support plate (4) is fixedly connected to the inside of the gas phase outlet (2). A pressure relief assembly (5) is provided inside the support plate (4). The outside of the pressure relief assembly (5) is slidably connected to the inside of the gas phase outlet (2). The pressure relief assembly (5) includes a float (51). The bottom end of the float (51) is slidably connected to the inside of the support plate (4). The outside of the float (51) is slidably connected to the inside of the gas phase outlet (2). An elastic element (52) is fixedly connected to the inner top wall of the float (51). A sliding plate (53) is fixedly connected to the bottom end of the elastic element (52).
2. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 1, characterized in that: The sliding plate (53) is slidably connected to the outside of the float (51), and the float (51) is fixedly connected to the inside of the air guide tube (54).
3. The alkaline electrolysis water hydrogen production gas-liquid separation device according to claim 1, characterized in that: A fixed frame (6) is fixedly connected inside the gas phase outlet (2), a wire mesh demister (7) is fixedly connected inside the fixed frame (6), and an auxiliary component (8) is provided inside the fixed frame (6).
4. The alkaline electrolysis water hydrogen production gas-liquid separation device according to claim 3, characterized in that: The auxiliary component (8) includes a fixing plate (81), which is externally fixedly connected to the inside of the fixing frame (6). An airbag (82) is provided on the inner bottom wall of the fixing plate (81). A lifting block (83) is fixedly connected to the top of the airbag (82). A lifting plate (84) is fixedly connected to the bottom of the airbag (82). A rotating plate (85) is rotatably connected to the top of the lifting block (83). The top of the rotating plate (85) is rotatably connected to the inside of the fixing frame (6).
5. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 4, characterized in that: The lifting plate (84) is externally slidably connected to the inside of the fixing frame (6), and the lifting block (83) is externally slidably connected to the inside of the fixing plate (81) and the fixing frame (6).
6. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 1, characterized in that: The bottom end of the protective shell (1) is fixedly connected to a support leg (9), and the inside of the sleeve (11) is fixedly connected to a baffle (12).
7. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 6, characterized in that: One end of the sleeve (11) is fixedly connected to a liquid mixture inlet (10), and the inside of the sleeve (11) is fixedly connected to a liquid phase outlet (13).
8. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 7, characterized in that: The liquid phase outlet (13) is externally fixedly connected to the inside of the protective housing (1), and the liquid phase outlet (13) is externally fixedly connected to the inside of the flange ring (3).
9. The alkaline water electrolysis hydrogen production gas-liquid separation device according to claim 1, characterized in that: The protective shell (1) is fixedly connected to a sewage pipe (14). One end of the sewage pipe (14) is fixedly connected to the inside of the gas phase outlet (2) and the fixed frame (6). The other end of the sewage pipe (14) is fixedly connected to a sewage outlet (16).
10. The alkaline electrolysis water hydrogen production gas-liquid separation device according to claim 9, characterized in that: A valve (15) is fixedly connected inside the drain outlet (16). The drain outlet (16) and the valve (15) are fixedly connected to the outside of the protective shell (1). The bottom end of the drain outlet (16) is fixedly connected to the inside of the flange ring (3).