Gas-water separation device

Abstract

The invention relates to the field of gas-water separation, in particular to a gas-water separation device which comprises a separation device body, a gas-water input pipe is arranged at the bottom of the side end of the body, a horizontal cavity is formed in the body, a plurality of dehumidification air cushions arranged side by side are arranged in the horizontal cavity, and horizontal filtering baffles are fixedly installed at the lower ends of the dehumidification air cushions. The gas-water separator combines a baffle type and a centrifugal type for gas-water separation, so that the separation efficiency is greatly improved. And through cooperative control of the humidity sensor and the temperature sensor, accurate gas-water separation management is realized. The humidity control part ensures that gas enters a proper separation area by switching baffle plate paths, and the temperature control part heats through an electrothermal film and cools through a heat dissipation copper sheet, so that the gas-water separator always operates in an optimal temperature interval. In combination with a lag control mechanism, the system can effectively avoid frequent switching caused by environmental humidity fluctuation, reduce energy consumption, prolong the service life of equipment, and ensure long-term stable operation of the fuel cell system.

Description

Technical Field

[0001] This application relates to the field of gas-water separation, and particularly to a gas-water separation device. Background Art

[0002] A proton exchange membrane fuel cell (PEMFC) is a device that directly converts the chemical energy of fuels (such as hydrogen) and oxidants (such as oxygen) into electrical energy through electrochemical reactions. It has the advantages of high efficiency, zero emissions, and fast startup, and is widely used in new energy vehicles, distributed power generation and other fields. In a PEMFC system, a gas-water separator is a key auxiliary component, and its function is to separate the water generated by the reaction and the unreacted gas, which plays a crucial role in the performance, stability, and lifespan of the system.

[0003] In traditional water separation devices, due to the too low temperature of the gas-water mixture, water vapor will prematurely condense into water droplets, resulting in water blockage, which in turn affects gas fluidity and hydrogen recovery efficiency; while when the temperature is too high, water vapor may not be effectively condensed, causing a decrease in water separation efficiency and wet gas to enter the exhaust system, thereby affecting the stability of the fuel cell system and the purity of hydrogen. Therefore, precisely controlling the temperature of the gas-water separator can effectively avoid water blockage problems, improve water separation efficiency, and optimize hydrogen recovery and overall system performance. Therefore, there is a need to involve a gas-water separation device to optimize the gas-water separation working efficiency and stability of proton exchange membrane fuel cells. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a gas-water separation device; including a separation device body, a gas-water input pipe is provided at the bottom of the side end of the body, a horizontal cavity is provided inside the body, and a plurality of dehumidification air cushions arranged in parallel are provided in the horizontal cavity. A horizontal filter baffle is fixedly installed at the lower end of the dehumidification air cushion, a drainage device is provided at the lower end of the horizontal filter baffle, a positioning plate is provided at the top of the dehumidification air cushion, a first switch baffle is provided at one end of the positioning plate away from the gas-water input pipe, a water separation device is provided at the upper end of the first switch baffle, the side end of the water separation device communicates with an ascending cavity, and a plurality of trapezoidal baffles arranged at intervals are provided in the ascending cavity. The upper end of the ascending cavity communicates with a booster pipe having a conical structure. The side end of the horizontal cavity communicates with a low-humidity pipe, the low-humidity pipe communicates with a circulation cavity, the upper end of the circulation cavity communicates with the wide-mouth end of the booster pipe, and a hydrogen outlet is provided at the top of the circulation cavity.

[0005] Preferably, the drainage device includes a drainage cavity having a conical structure provided at the lower end of the horizontal filter baffle, a first liquid level sensor is provided in the drainage cavity, and the bottom of the drainage cavity communicates with a drain pipe and a heating drain valve.

[0006] Preferably, the water separation device includes a fixing rod fixed to the lower end of the trapezoidal baffle at the bottommost part. A number of water separation discs are arranged on the fixing rod. A second switch baffle is installed at the side end of the water separation disc, and a through port is provided at the upper end of the second switch baffle.

[0007] Preferably, the trapezoidal baffles are symmetrically arranged opposite to each other so that an S-shaped passage is formed in the rising chamber.

[0008] Preferably, a hydrogen regulating valve is provided at the top of the circulation chamber.

[0009] Preferably, a first stop valve is provided at the upper end of the low humidity pipe, and a second stop valve is provided at the lower end.

[0010] Preferably, a second liquid level sensor is provided at the bottom side end of the rising chamber.

[0011] The beneficial effects of the present application are as follows: The present application combines the baffle type and the centrifugal type for gas-water separation, greatly improving the separation efficiency. And through the coordinated control of the humidity sensor and the temperature sensor, precise gas-water separation management is realized. The humidity control part ensures that the gas enters the appropriate separation area by switching the baffle path, while the temperature control part heats through the electric heating film and cools through the heat dissipation copper sheet, so that the gas-water separator always operates in the optimal temperature range. Combining the hysteresis control mechanism, the system can effectively avoid frequent switching caused by environmental humidity fluctuations, reduce energy consumption, increase the service life of the equipment, and ensure the long-term stable operation of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure shows the structural schematic diagram of Embodiment 1 of the present application; Figure 2 The figure shows the structural schematic diagram of Embodiment 2 of the present application.

[0013] 1. Gas-water input pipe; 2. Dehumidification air cushion; 3. Horizontal filter baffle; 4. First liquid level sensor; 5. First switch baffle; 6. Trapezoidal baffle; 7. Boost pipe; 8. Hydrogen regulating valve; 9. Hydrogen outlet; 10. Second liquid level sensor; 11. Low humidity pipe; 12. First stop valve; 13. Second stop valve; 14. Humidity sensor; 15. Drain pipe; 16. Heating drain valve; 17. Fixing rod; 18. Water separation disc; 19. Second switch baffle; 20. Through port; 21. Rising chamber; 22. Horizontal chamber; 23. Circulation chamber; 24. Drainage chamber; 25. First temperature sensor; 26. Thin electric heating film; 27. Thick electric heating film; 28. Heat dissipation copper sheet; 29. Second temperature sensor; 30. Third temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To enable those skilled in the art of this technical field to better understand the technical solution of this application, the following further detailed description of the present invention is provided in conjunction with the accompanying drawings and the best embodiments.

[0015] In the field of industrial gas dehumidification, the dew point of 10°C is often used as the critical point between dry and moist gases. In the anode and cathode of fuel cells, the relative humidity (RH) is usually used to evaluate the gas humidity. Different environmental temperatures and engineering requirements may lead to different humidity definition standards. Low humidity range: RH ≤ 50%, in this range the gas is dry and the water vapor content is low. High humidity range: RH ≥ 60%, in this range the gas has a high water vapor saturation and may produce condensate droplets. Intermediate humidity region: RH is between 50 - 60%, this region can be used as a "dead zone" or "hysteresis zone" to prevent frequent switching of valves. In the fields of environmental engineering and air conditioning, RH = 40 - 60% is considered a comfortable range, but for industrial production such as fuel cells, this range needs to be further narrowed, and usually RH > 60% is considered high humidity.

[0016] Example 1

[0017] See Figure 1 , a gas - water separation device; comprising a separation device body, a gas - water input pipe 1 is provided at the bottom of the side end of the body, a horizontal cavity 22 is provided inside the body, a number of dehumidification air cushions 2 arranged in parallel are provided in the horizontal cavity 22, a horizontal filter baffle 3 is fixedly installed at the lower end of the dehumidification air cushion 2, a drainage device is provided at the lower end of the horizontal filter baffle 3, a positioning plate is provided at the top of the dehumidification air cushion 2, a first switch baffle 5 is provided at one end of the positioning plate away from the gas - water input pipe 1, a water - isolating device is provided at the upper end of the first switch baffle 5, the side end of the water - isolating device communicates with the rising cavity 21, a number of trapezoidal baffles 6 arranged at intervals are provided in the rising cavity 21, the upper end of the rising cavity 21 communicates with a booster pipe 7 of a conical structure, the side end of the horizontal cavity 22 communicates with a low - humidity pipe 11, the low - humidity pipe 11 communicates with a circulation cavity 23, the upper end of the circulation cavity 23 communicates with the wide - mouth end of the booster pipe 7, and a hydrogen outlet 9 is provided at the top of the circulation cavity 23.

[0018] The device includes a separation device body, and a gas - water input pipe 1 is provided at the bottom of the side end of the body, serving as the inlet channel for the gas - water mixture. The interior of the body is divided into three main functional areas: a horizontal cavity 22, a rising cavity 21, and a circulation cavity 23, and each chamber works in coordination through a precisely designed connection structure.

[0019] Inside the horizontal chamber 22, several dehumidification air cushions 2 arranged in parallel are provided. These air cushions are made of highly hygroscopic materials, and a horizontal filter baffle 3 is fixedly installed at their lower ends. The horizontal filter baffle 3 adopts a multi-layer filtering structure, which can effectively intercept solid particles. At the same time, a drainage device is provided at its lower end for collecting and discharging the separated liquid water. A positioning plate is provided at the top of the dehumidification air cushion 2 to ensure that the air cushion maintains a stable position during operation. At one end of the positioning plate away from the gas-water inlet pipe 1, a first switch baffle 5 is provided. The first switch baffle 5 adopts an intelligent control system and can automatically adjust the opening and closing degree according to the flow rate of the gas-water mixture to achieve the best separation effect. A water-blocking device is provided at the upper end of the first switch baffle 5. This device is made of a hydrophobic material and can effectively prevent liquid water from entering the rising chamber 21.

[0020] The rising chamber 21 is connected to the horizontal chamber 22 through a water-blocking device, and several trapezoidal baffles 6 arranged at intervals are provided inside it. These baffles are designed with special angles, which can guide the air flow to form a spiral upward movement, increase the gas-water contact area, and improve the separation efficiency. The upper end of the rising chamber 21 is connected to a booster pipe 7 with a conical structure. This conical structure design can accelerate the air flow movement, form a negative pressure area, and promote gas-water separation. The wide end of the booster pipe 7 is connected to the circulation chamber 23 to ensure that the separated gas smoothly enters the next processing link.

[0021] The side end of the horizontal chamber 22 is connected to the circulation chamber 23 through a low-humidity pipe 11. This connection structure design can directly transport the preliminarily separated low-humidity gas to the circulation chamber 23, reducing energy loss. The circulation chamber 23 adopts an enlarged cavity design, which can effectively reduce the air flow velocity and allow the remaining moisture to fully settle. An outlet for hydrogen 9 is provided at the top of the circulation chamber 23 as the outlet for the finally separated gas.

[0022] Through the precise connection and coordinated action among the components, this device realizes an efficient gas-water separation process. Through the three-stage separation structure of the dehumidification air cushion 2, the horizontal filter baffle 3 in the horizontal chamber 22, and the trapezoidal baffle 6 in the rising chamber 21, the separation efficiency is significantly improved; the intelligent adjustment function of the first switch baffle 5 can automatically optimize the separation parameters according to the real-time working conditions to ensure that the device can maintain the best operating state under different working conditions; the structural design of the conical booster pipe 7 not only improves the separation efficiency but also reduces the energy consumption through the negative pressure effect. The actual operation data shows that compared with the traditional separation device, the energy consumption is greatly reduced; the precise connection structure and multiple filtering design among the chambers effectively prevent blockage and backflow phenomena, ensuring the long-term stable operation of the device.

[0023] The drainage device includes a drainage cavity 24 with a conical structure provided at the lower end of the horizontal filter baffle 3. A first liquid level sensor 4 is provided in the drainage cavity 24. The bottom of the drainage cavity 24 is connected to a drain pipe 15 and a heating drain valve 16. As a key component of the gas-water separation device, the drainage device significantly improves the collection and discharge efficiency of liquid water. The drainage device includes a drainage cavity 24 provided at the lower end of the horizontal filter baffle 3. The drainage cavity 24 is designed with a conical structure, which can accelerate the collection process of liquid water. A first liquid level sensor 4 is provided in the drainage cavity 24, which can monitor the water level change in real time and provide data support for intelligent drainage. The bottom of the drainage cavity 24 is connected to a drain pipe 15 and a heating drain valve 16 to form a complete drainage channel. The heating drain valve 16 is designed with electric heating, which can prevent the freezing of the drainage pipe in a low-temperature environment and ensure the stable operation of the drainage system throughout the year. The close connection between components realizes the rapid collection, intelligent monitoring and reliable discharge of liquid water, effectively avoiding the influence of water accumulation on the separation efficiency and improving the overall operation stability of the device at the same time.

[0024] The water separation device includes a fixed rod 17 fixed at the lower end of the bottommost trapezoidal baffle 6. A number of water separation discs 18 are arranged on the fixed rod 17. A second switch baffle 19 is installed at the side end of the water separation disc 18. A through port 20 is provided at the upper end of the second switch baffle 19. The fixed rod 17 fixed at the lower end of the bottommost trapezoidal baffle 6 ensures the stability of the device. A number of water separation discs 18 are arranged on the fixed rod 17. These discs are made of hydrophobic materials and form multiple water-blocking barriers through a stacked structure. A second switch baffle 19 is installed at the side end of the water separation disc 18, which can automatically adjust the opening and closing angle according to the air flow intensity to optimize the air flow channel. A through port 20 is provided at the upper end of the second switch baffle 19, which serves as a dedicated channel for air flow, ensuring the smooth passage of gas and effectively blocking liquid water at the same time. The precise cooperation between components improves the liquid water blocking efficiency and reduces the air flow resistance, significantly enhancing the overall performance of the separation device.

[0025] The trapezoidal baffles 6 are symmetrically arranged opposite to each other, so that the rising cavity 21 forms an S-shaped passage, extending the gas-water contact path, increasing the separation time, improving the separation efficiency, reducing the air flow resistance at the same time and optimizing the energy consumption performance.

[0026] A hydrogen regulating valve 8 is provided at the top of the circulation chamber 23; a first stop valve 12 is provided at the upper end of the low humidity tube 11, and a second stop valve 13 is provided at the lower end; a second liquid level sensor 10 is provided at the bottom side end of the rising chamber 21. The hydrogen regulating valve 8 is a key control component at the top of the circulation chamber 23, and its working process adopts an intelligent feedback control mechanism. When the pressure sensor of the hydrogen outlet 9 detects pressure fluctuations, the servo motor built into the regulating valve drives the valve core to move accurately, and the adjustment opening range is 0-100%, and the response time is less than 0.2 seconds. The valve body is made of stainless steel and equipped with a PTFE sealing ring to ensure reliable sealing under high pressure (≤10MPa) conditions. The adjustment accuracy can reach ±0.01MPa, and the stable output of pressure is achieved through the PID control algorithm; the first stop valve 12 and the second stop valve 13 use pneumatic actuators and are controlled by 4-20mA signals. The first stop valve 12 is used as the main control valve, equipped with a fast opening and closing function, and the full opening / full closing time is less than 1 second, which is used to adjust the gas flow of the low humidity tube 11. The second stop valve 13 is a safety isolation valve, driven by a double-acting cylinder and equipped with a manual emergency operation device, which can be quickly cut off within 0.5 seconds in an emergency. Both valves are equipped with position feedback switches to monitor the valve status in real time, and interlock control is achieved through PLC to ensure safe and reliable operation. The valve sealing level meets the ANSI Class VI standard, and the leakage rate is less than 50ppm, meeting the requirements of harsh working conditions.

[0027] The operation process includes: the gas-water mixture discharged from the anode of the battery stack enters the gas-water separator through the gas-water input pipe 1, first passes through the dehumidification air pad 2 for preliminary dehumidification, and then senses the humidity through the humidity sensor 14. When the humidity signal exceeds the set threshold value S1 (for example, RH=65%), the first switch baffle 5 with adjustable opening is opened, and the high-humidity gas passes through a number of water-blocking discs 18 and moves centrifugally around the fixed rod 17, so that the gas and water are separated for a second time, and then flows out through the port 20 and passes through the trapezoidal baffle 6 for a third gas-water separation, and then the pressure is increased by the booster pipe 7 to reduce the pressure drop, and then the flow is regulated by the hydrogen regulating valve 8, and finally the hydrogen is discharged from the hydrogen outlet 9. At this time, the first stop valve 12 and the second stop valve 13 are both closed to prevent the liquid separated from the three times of gas and water from entering the flow chamber 23. The second switch baffle 19 is connected to the upper part of the gas-water separator body, and the second liquid level sensor 10 is used to adjust the opening of the second switch baffle 19 to achieve regular drainage; when the humidity signal is lower than S2 (for example, RH=45%), the system closes the high humidity path and switches to the low humidity path, that is, closes the first switch baffle 5, controls the first stop valve 12 and the second stop valve 13 to open, and the low humidity gas passes through the low humidity pipe 11, and then controls the flow rate through the hydrogen regulating valve 8, and finally discharges from the hydrogen outlet 9. The liquid of the entire device is regularly drained by the first liquid level sensor 4 to control the heating drain valve 16.

[0028] The system also includes a hysteresis control module, which introduces a hysteresis mechanism during the path switching operation to prevent frequent switching of the valves. For example, when RH is between 50% and 60%, this area can be used as the "hysteresis zone". When the system detects the gas within this range, the first shut-off valve 12, the second shut-off valve 13, and the first switch baffle 5 are all closed. When the airflow passing through the dehumidification air cushion 2 gradually mixes with the airflow in the cavity below the horizontal filter baffle 3, the gas humidity will eventually be outside this range.

[0029] Within the humidity fluctuation range of the gas-liquid mixture (such as RH 50% - 60%), traditional path switching control is prone to the problem of frequent switching, resulting in frequent opening and closing of the valves, affecting the stability of the system and the service life of the valves. Therefore, in the present invention, a hysteresis control module is set in the control unit. When the humidity signal is within the hysteresis interval (such as RH 50% - 60%), the path is not switched. Through hysteresis logic control, it is ensured that the path is not switched when the humidity signal fluctuates, preventing frequent switching of the path, avoiding oscillation of the control system and frequent switching of the path, and enhancing the stability of the system and the robustness of the control.

[0030] Embodiment 2

[0031] See Figure 2 , a gas-water separation device, including a separation device body. At the bottom of the side end of the body, there is a gas-water input pipe 1. Inside the body, there is a horizontal cavity 22. Inside the horizontal cavity, there are several dehumidification air cushions 2 arranged in parallel. At the lower end of the dehumidification air cushion 2, a horizontal filter baffle 3 is fixedly installed. At the lower end of the horizontal filter baffle 3, there is a drainage device. At the top of the dehumidification air cushion 2, there is a positioning plate. At one end of the positioning plate away from the gas-water input pipe 1, there is a first switch baffle 5. At the upper end of the first switch baffle 5, there is a water separation device. The side end of the water separation device communicates with the rising cavity 21. Inside the rising cavity 21, there are several trapezoidal baffles 6 arranged at intervals. The upper end of the rising cavity 21 communicates with a conical booster pipe 7. The side end of the horizontal cavity 22 communicates with a low-humidity pipe 11. The low-humidity pipe 11 communicates with a circulation cavity 23. The upper end of the circulation cavity 23 communicates with the wide-mouth end of the booster pipe 7. At the top of the circulation cavity 23, there is a hydrogen outlet 9.

[0032] The drainage device includes a drainage cavity 24 with a conical structure arranged at the lower end of the horizontal filter baffle 3. Inside the drainage cavity 24, there is a first liquid level sensor 4. The bottom of the drainage cavity 24 communicates with a drain pipe 15 and a heating drainage valve 16.

[0033] The water separation device includes a fixing rod 17 fixed at the lower end of the bottommost trapezoidal baffle 6. Several water separation discs 18 are arranged in sequence on the fixing rod 17. At the side end of the water separation disc 18, a second switch baffle 19 is installed. At the upper end of the second switch baffle 19, there is a through hole 20.

[0034] The trapezoidal baffles 6 are symmetrically arranged opposite to each other, so that the rising cavity 21 forms an S-shaped passage.

[0035] A hydrogen regulating valve 8 is provided at the top of the circulation chamber 23.

[0036] A first stop valve 12 is provided at the upper end of the low-humidity pipe 11, and a second stop valve 13 is provided at the lower end.

[0037] A second liquid level sensor 10 is provided at the bottom side end of the rising chamber 21.

[0038] A first temperature sensor 25 is installed at the inner side end of the horizontal chamber 22, a thin electric heating diaphragm 26 is installed on the side wall of the circulation chamber 23, a thick electric heating diaphragm 27 is installed on the trapezoidal baffle 6, and a heat dissipation copper sheet 28 is provided at the top of the rising chamber 21.

[0039] In the low-humidity path, when the humidity sensor 14 detects that the humidity signal is lower than S2, for example, RH = 45%, the low-humidity path is opened. The gas directly enters the low-humidity pipe 11 after passing through the dehumidifying air cushion 2 and does not pass through multiple trapezoidal baffles 6. Therefore, the temperature change of the gas is small. The first temperature sensor 25 is installed at the inlet of this path to monitor the gas temperature change in real time. When the gas temperature is lower than 60°C, the control unit starts the thin electric heating diaphragm 26. The power of the thin electric heating film is large, which is suitable for rapid heating to raise the gas temperature to an appropriate range. When the temperature exceeds 60°C, the thin electric heating diaphragm 26 stops working to keep the gas within a safe range and ensure the stability of gas-liquid separation. Finally, the gas is discharged from the hydrogen outlet 9 after the flow rate is regulated by the hydrogen regulating valve 8.

[0040] In the low-humidity path, the moisture content of the gas is low. The traditional multi-stage separation strategy will cause unnecessary separation operations in the low-humidity path, increasing the operating energy consumption of the system. To solve this problem, the present invention simplifies the separation structure and reduces the separation stage in the low-humidity path, significantly improving the separation efficiency, reducing the energy consumption loss in multi-stage separation, and ensuring the high efficiency and low-cost operation of the separation process.

[0041] In the high-humidity path, when the humidity sensor 14 detects that the humidity exceeds the S1 threshold, for example, RH = 65%, the first switch baffle 5 opens, and high-humidity gas enters the high-humidity path. When the gas passes through the trapezoidal baffle 6 for gas-liquid separation, in order to ensure the temperature control in the wet gas path, a thick electric heating film 27 is set. The thick electric heating film 27 starts to heat the gas flow only when the first switch baffle 5 is in the open state and the first temperature sensor 25 monitors that the gas flow temperature is lower than 60 °C, so as to distinguish from the temperature control of the low-humidity path. In the middle of the high-humidity path, the third temperature sensor 30 monitors the gas flow temperature. When the temperature exceeds 70 °C, the system shuts down the thick electric heating film 27 to prevent the temperature from being too high and affecting the water-vapor separation efficiency. At the same time, the heat dissipation copper sheet 28 at the top starts passive cooling to ensure that the high temperature does not affect the gas-liquid separation process. The second temperature sensor 29 is installed at the top of the high-humidity path to monitor the temperature of the finally discharged gas in real time, ensuring that the temperature of the output gas is always maintained within the optimal range of 60 - 70 °C, thereby ensuring the stability of hydrogen recovery and the high efficiency of system operation. Then the gas is pressurized through the booster pipe to reduce the pressure drop, and finally the flow rate is controlled by the hydrogen regulating valve 8 and flows out from the hydrogen outlet 9.

[0042] In the high-humidity path, the moisture content of the gas-liquid mixture is relatively high, and it is difficult for a single separation device to fully remove the moisture in the gas, resulting in the moisture content of the discharged gas exceeding the standard, which affects the gas purity of the system. Therefore, the present invention realizes the deep separation of the gas-liquid mixture by setting a multi-stage gas-liquid separation device in the high-humidity path, ensuring that the moisture content of the discharged gas reaches the target range required by the system.

[0043] At the same time, in the high-humidity path, if the condensate generated during the gas-liquid separation process cannot be discharged in time, it may cause liquid accumulation in the path, further hindering gas flow and increasing the flow resistance. To solve this problem, the present invention ensures that there is no liquid retention in the path and avoids the occurrence of water blockage phenomenon by setting a multi-point liquid collection and centralized discharge device, ensuring the continuous and stable flow of gas.

[0044] In addition, in the high-humidity path, the gas needs to pass through multiple trapezoidal baffles 6 for multi-stage separation. The presence of these baffles significantly increases the flow resistance of the gas, resulting in too large a pressure drop between the inlet and outlet of the path, a decrease in the gas flow rate, and even possible instability of the gas flow in the system. To solve this problem, the present invention adds a booster pipe 7 in the high-humidity path. The function of the booster pipe 7 is to boost the gas pressure at the key positions of the path to compensate for the pressure drop introduced due to the increase in flow resistance. By introducing a local pressure boosting mechanism in the high-humidity path, the pressure gradient in the path is balanced, ensuring the smooth flow of gas in the path, reducing the pressure drop difference between the inlet and outlet, optimizing the flow performance of the path, and improving the separation efficiency and the stability of the gas flow rate of the high-humidity path.

[0045] The entire system is based on an intelligent temperature and humidity control logic. Through the coordinated control of humidity sensors and temperature sensors, precise gas-water separation management is achieved. The humidity control part ensures that the gas enters the appropriate separation area by switching the baffle path, while the temperature control part heats through the electrothermal film and cools through the heat dissipation copper sheet, enabling the gas-water separator to always operate within the optimal temperature range. Combining with the hysteresis control mechanism, this system can effectively avoid frequent switching caused by environmental humidity fluctuations, reduce energy consumption, extend the service life of the equipment, and ensure the long-term stable operation of the fuel cell system.

[0046] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present invention, rather than limiting the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A gas-water separation device, characterized in that, It includes a separation device body. At the bottom of the side end of the body, there is a gas-water input pipe (1). Inside the body, there is a horizontal cavity (22). Inside the horizontal cavity (22), there are several dehumidification air cushions (2) arranged in parallel. At the lower end of the dehumidification air cushion (2), a horizontal filter baffle (3) is fixedly installed. At the lower end of the horizontal filter baffle (3), there is a drainage device. At the top of the dehumidification air cushion (2), there is a positioning plate. At one end of the positioning plate away from the gas-water input pipe (1), there is a first switch baffle (5). At the upper end of the first switch baffle (5), there is a water separation device. The side end of the water separation device communicates with an ascending cavity (21). Inside the ascending cavity (21), there are several trapezoidal baffles (6) arranged at intervals. The upper end of the ascending cavity (21) communicates with a booster pipe (7) with a conical structure. The side end of the horizontal cavity (22) communicates with a low-humidity pipe (11). The low-humidity pipe (11) communicates with a circulation cavity (23). The upper end of the circulation cavity (23) communicates with the wide-mouth end of the booster pipe (7). At the top of the circulation cavity (23), there is a hydrogen outlet (9).

2. The gas-water separation device according to claim 1, characterized in that, The drainage device includes a drainage cavity (24) with a conical structure arranged at the lower end of the horizontal filter baffle (3). Inside the drainage cavity (24), there is a first liquid level sensor (4). The bottom of the drainage cavity (24) communicates with a drain pipe (15) and a heating drain valve (16).

3. The gas-water separation device according to claim 1, characterized in that, The water separation device includes a fixed rod (17) fixed at the lower end of the bottommost trapezoidal baffle (6). A number of water separation discs (18) are arranged in sequence on the fixed rod (17). At the side end of the water separation disc (18), a second switch baffle (19) is installed. At the upper end of the second switch baffle (19), there is a through hole (20).

4. The gas-water separation device according to claim 1, characterized in that The trapezoidal baffles (6) are symmetrically and oppositely arranged so that the ascending cavity (21) forms an S-shaped passage.

5. The gas-water separation device according to claim 1, characterized in that, At the top of the circulation cavity (23), there is a hydrogen regulating valve (8).

6. The gas-water separation device according to claim 1, wherein At the upper end of the low-humidity pipe (11), there is a first stop valve (12), and at the lower end, there is a second stop valve (13).

7. The gas-water separation device according to claim 1, characterized in that, At the bottom side end of the ascending cavity (21), there is a second liquid level sensor (10).

8. The gas-water separation device according to claim 1, characterized in that, Inside the side end of the horizontal cavity (22), there is a first temperature sensor (25). On the side wall of the circulation cavity (23), there is a thin electric heating film (26). On the trapezoidal baffle (6), there is a thick electric heating film (27). At the top of the ascending cavity (21), there is a heat dissipation copper sheet (28).

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