A gas-water separation device

Abstract

The present application relates to the field of gas-water separation, and in particular to a gas-water separation device, including a separation device body, a gas-water inlet pipe is provided at the bottom of the side end of the body, a horizontal cavity is provided inside the body, a number of dehumidification pads arranged in parallel are provided in the horizontal cavity, and a horizontal filter baffle is fixedly installed at the lower end of the dehumidification pad. The present application combines baffle type and centrifugal type for gas-water separation, which greatly improves the separation efficiency. And through the coordinated control of humidity sensors and temperature sensors, accurate 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 ensures that the gas-water separator always operates in the optimal temperature range through electric heating film heating and heat dissipation copper sheet cooling. Combined with the hysteresis control mechanism, the system can effectively avoid frequent switching due to fluctuations in environmental humidity, reduce energy consumption, increase equipment service life, and ensure the long-term stable operation of the fuel cell system.

Description

Technical Field

[0001] The present application relates to the field of gas-water separation, and in particular 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 a fuel (such as hydrogen) and an oxidant (such as oxygen) into electrical energy through an electrochemical reaction. With advantages such as high efficiency, zero emissions, and fast startup, it is widely used in new energy vehicles and distributed power generation. In a PEMFC system, the gas-water separator is a key auxiliary component, separating the generated water from the unreacted gases. It plays a crucial role in the system's performance, stability, and lifespan.

[0003] In traditional water separation devices, because the temperature of the gas-water mixture is too low, water vapor will condense into water droplets prematurely, causing water blockage, which in turn affects gas flow and hydrogen recovery efficiency; when the temperature is too high, water vapor may not be able to condense effectively, resulting in a decrease in water separation efficiency and moisture entering the exhaust system, which in turn affects 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 the water blockage problem, improve water separation efficiency, optimize hydrogen recovery and overall system performance. Therefore, there is a need for a gas-water separation device to optimize the gas-water separation 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; it includes 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, a number 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 the end of the positioning plate away from the gas-water input pipe, a water-isolating device is provided at the upper end of the first switch baffle, the side end of the water-isolating device is connected to the rising cavity, a number of trapezoidal baffles are provided at intervals in the rising cavity, the upper end of the rising cavity is connected to a boosting pipe with a conical structure, the side end of the horizontal cavity is connected to a low-humidity pipe, the low-humidity pipe is connected to the circulation cavity, the upper end of the circulation cavity is connected to the wide-mouth end of the boosting pipe, and a hydrogen outlet is provided at the top of the circulation cavity.

[0005] Preferably, the drainage device includes a drainage cavity with 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 is connected to a drainage pipe and a heating drainage valve.

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

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

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

[0009] Preferably, the low humidity pipe is provided with a first stop valve at the upper end and a second stop valve 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 baffle and centrifugal methods for gas-water separation, greatly improving separation efficiency. And 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 ensures that the gas-water separator always operates in the optimal temperature range through electric heating film heating and heat dissipation copper sheet cooling. Combined with the hysteresis control mechanism, the system can effectively avoid frequent switching due to fluctuations in ambient humidity, reduce energy consumption, increase equipment service life, and ensure the long-term stable operation of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Shown is a structural diagram of Example 1 of the present application;

[0013] Figure 2 Shown is a structural diagram of Example 2 of the present application.

[0014] 1. Air-water inlet pipe; 2. Dehumidification air cushion; 3. Horizontal filter baffle; 4. First liquid level sensor; 5. First switch baffle; 6. Trapezoidal baffle; 7. Booster 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-isolating disc; 19. Second switch baffle; 20. Through port; 21. Rising chamber; 22. Horizontal chamber; 23. Circulation chamber; 24. Drain chamber; 25. First temperature sensor; 26. Thin electric heating diaphragm; 27. Thick electric heating diaphragm; 28. Heat dissipation copper sheet; 29. ​​Second temperature sensor; 30. Third temperature sensor. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention is further described in detail below with reference to the accompanying drawings and the best embodiment.

[0016] In the field of industrial gas dehumidification, the dew point of 10°C is often used as the critical point between dry and wet gas. In the anode and cathode of fuel cells, relative humidity (RH) is usually used to judge the humidity of the gas. Different ambient temperatures and engineering requirements may lead to different standards for defining humidity. Low humidity range: RH≤50%. The gas in this range is dry and has a low water vapor content. High humidity range: RH≥60%. The gas in this range has a high water vapor saturation and may produce condensation droplets. Intermediate humidity area: RH is between 50-60%. This area 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. RH>60% is generally considered high humidity.

[0017] Example 1

[0018] See also Figure 1 , a gas-water separation device; it includes 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, and several dehumidification air cushions 2 are arranged in parallel in the horizontal cavity, and a horizontal filter baffle 3 is fixedly installed at the lower end of the dehumidification air cushion 2, and a drainage device is provided at the lower end of the horizontal filter baffle 3, and a positioning plate is provided at the top of the dehumidification air cushion 2, and a first switch baffle 5 is provided at the end of the positioning plate away from the gas-water input pipe 1, and a water-isolating device is provided at the upper end of the first switch baffle 5, and the side end of the water-isolating device is connected to the rising chamber 21, and several trapezoidal baffles 6 are arranged at intervals in the rising chamber 21, and the upper end of the rising chamber 21 is connected to the boosting pipe 7 with a conical structure, and the side end of the horizontal cavity 22 is connected to the low-humidity pipe 11, and the low-humidity pipe 11 is connected to the circulation chamber 23, and the upper end of the circulation chamber 23 is connected to the wide-mouth end of the boosting pipe 7, and the top of the circulation chamber 23 is provided with a hydrogen outlet 9.

[0019] The device comprises a separator body, with a gas-water inlet pipe 1 located at the bottom of the side end of the body, serving as the inlet channel for the gas-water mixture. The body is divided into three main functional areas: a horizontal chamber 22, an ascending chamber 21, and a flow chamber 23. These chambers work in tandem through a precisely designed connection structure.

[0020] In the horizontal cavity 22, there are provided several dehumidification air cushions 2 arranged in parallel. These air cushions are made of highly hygroscopic materials, and a horizontal filter baffle 3 is fixedly installed at the lower end. 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 to collect and discharge the separated liquid water. A positioning plate is provided on the top of the dehumidification air cushion 2 to ensure that the air cushion maintains a stable position during operation. A first switch baffle 5 is provided at the end of the positioning plate away from the air-water inlet pipe 1. The first switch baffle 5 adopts an intelligent control system, which can automatically adjust the opening and closing degree according to the flow rate of the air-water mixture to achieve the best separation effect. A water-isolating device is provided at the upper end of the first switch baffle 5. The device is made of hydrophobic material and can effectively prevent liquid water from entering the rising cavity 21.

[0021] The rising chamber 21 is connected to the horizontal chamber 22 through a water-isolating device, and is provided with a number of trapezoidal baffles 6 arranged at intervals. These baffles are designed with a special angle to guide the airflow to form a spiral upward motion, increase the gas-water contact area, and improve the separation efficiency. The upper end of the rising chamber 21 is connected to the booster pipe 7 with a conical structure. The conical structure design can accelerate the airflow 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 can smoothly enter the next processing link.

[0022] The side of horizontal cavity 22 connects to flow cavity 23 via low-humidity pipe 11. This connection allows the initially separated, low-humidity gas to be directly delivered to flow cavity 23, reducing energy loss. Flow cavity 23 features an enlarged cavity design, effectively reducing airflow velocity and allowing residual moisture to settle. A hydrogen outlet 9 is located at the top of flow cavity 23, serving as the outlet for the final separated gas.

[0023] The device achieves an efficient gas-water separation process through precise connections and synergy between its components. The three-stage separation structure, consisting of the dehumidification air cushion 2 in the horizontal chamber 22, the horizontal filter baffle 3, and the trapezoidal baffle 6 in the ascending chamber 21, significantly improves separation efficiency. The intelligent adjustment function of the first switch baffle 5 automatically optimizes separation parameters based on real-time operating conditions, ensuring that the device maintains optimal operating conditions under different operating conditions. The structural design of the conical booster tube 7 not only improves separation efficiency but also reduces energy consumption through the negative pressure effect. Actual operating data shows that energy consumption is significantly reduced compared to traditional separation devices. The precise connection structure and multiple filtration design between the chambers effectively prevent blockage and backflow, ensuring the long-term stable operation of the device.

[0024] The drainage device includes a conical drainage chamber 24 located at the lower end of the horizontal filter baffle 3. A first liquid level sensor 4 is located within the drainage chamber 24. The bottom of the drainage chamber 24 is connected to a drain pipe 15 and a heated drain valve 16. As a key component of the gas-water separation device, the drainage device significantly improves the efficiency of liquid water collection and discharge. The drainage device includes a conical drainage chamber 24 located at the lower end of the horizontal filter baffle 3, which accelerates the collection of liquid water. A first liquid level sensor 4 is located within the drainage chamber 24, enabling real-time monitoring of water level changes and providing data support for intelligent drainage. The bottom of the drainage chamber 24 is connected to the drain pipe 15 and the heated drain valve 16, forming a complete drainage channel. The heated drain valve 16 utilizes an electrically heated design to prevent freezing of the drainage pipe in low-temperature environments, ensuring stable year-round operation of the drainage system. The tight connection between the various components enables rapid collection, intelligent monitoring, and reliable discharge of liquid water, effectively preventing the impact of accumulated water on separation efficiency while improving the overall operational stability of the device.

[0025] The water-blocking device includes a fixed rod 17 fixed to the lower end of the bottom trapezoidal baffle 6, and a number of water-blocking discs 18 are arranged on the fixed rod 17. A second switch baffle 19 is installed on the side end of the water-blocking disc 18. The upper end of the second switch baffle 19 is provided with a through-hole 20. The fixed rod 17 is fixed to the lower end of the bottom trapezoidal baffle 6. This fixing method ensures the stability of the device. A number of water-blocking discs 18 are arranged on the fixed rod 17. These discs are made of hydrophobic material and form multiple water-blocking barriers through a stacked structure. A second switch baffle 19 is installed on the side end of the water-blocking disc 18, which can automatically adjust the opening and closing angle according to the airflow intensity to optimize the airflow channel. A through-hole 20 is provided on the upper end of the second switch baffle 19 as a dedicated channel for airflow, ensuring smooth passage of gas while effectively blocking liquid water. The precise coordination between the various components improves the liquid water blocking efficiency, while reducing airflow resistance, significantly improving the overall performance of the separation device.

[0026] The trapezoidal baffles 6 are symmetrically arranged relative to each other so that the rising chamber 21 forms an S-shaped passage, which prolongs the gas-water contact path, increases the separation time, improves the separation efficiency, and reduces the air flow resistance, thereby optimizing the energy consumption performance.

[0027] A hydrogen regulating valve 8 is installed at the top of the flow chamber 23. A first shut-off valve 12 is installed at the top of the low-humidity tube 11, and a second shut-off valve 13 is installed at the bottom. A second liquid level sensor 10 is installed at the bottom side of the rising chamber 21. The hydrogen regulating valve 8, a key control component at the top of the flow chamber 23, operates using an intelligent feedback control mechanism. When the pressure sensor at the hydrogen outlet 9 detects pressure fluctuations, the servo motor within the regulating valve precisely shifts the valve core, adjusting the opening range from 0-100% with a response time of less than 0.2 seconds. The valve body is constructed of stainless steel and equipped with a PTFE sealing ring to ensure a reliable seal under high-pressure conditions (≤10 MPa). Adjustment accuracy reaches ±0.01 MPa, and a PID control algorithm is used to achieve stable pressure output. The first and second shut-off valves 12, 13 utilize pneumatic actuators controlled by a 4-20 mA signal. The first shut-off valve 12, serving as the main control valve, features a fast opening and closing function, with a full-open / close time of less than 1 second. It regulates the gas flow in the low-humidity tube 11. The second shut-off valve 13, serving as a safety isolation valve, is driven by a double-acting cylinder and equipped with a manual emergency operating device, enabling rapid shutoff within 0.5 seconds in an emergency. Both valves are equipped with position feedback switches for real-time valve status monitoring and interlock control via a PLC, ensuring safe and reliable operation. The valves meet ANSI Class VI sealing standards, with a leakage rate of less than 50 ppm, meeting the requirements of stringent operating conditions.

[0028] 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 inlet pipe 1, first passes through the dehumidification air pad 2 for preliminary dehumidification, and then the humidity is sensed by 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 opens, and the high-humidity gas passes through a number of water-blocking discs 18 and undergoes centrifugal motion around the fixed rod 17, causing the gas and water to undergo a secondary deep separation. After flowing out through the port 20, it passes through the trapezoidal baffle 6 for a tertiary gas-water separation, and then increases the pressure through the booster pipe 7 to reduce the pressure drop. The flow is then 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 tertiary gas-water separation from entering the circulation chamber 23. Second switch baffle 19 is connected to the upper portion of the gas-water separator body. The second liquid level sensor 10 adjusts the opening of second switch baffle 19 to achieve regular drainage. When the humidity signal falls below S2 (e.g., RH = 45%), the system closes the high-humidity path and switches to the low-humidity path. This closes first switch baffle 5, controls the opening of first and second stop valves 12, 13, and allows the low-humidity gas to flow through low-humidity pipe 11, then through hydrogen regulating valve 8 for flow control, ultimately discharging through hydrogen outlet 9. Liquid in the entire device is periodically drained through heated drain valve 16, controlled by first liquid level sensor 4.

[0029] The system also includes a hysteresis control module, which introduces a hysteresis mechanism into the path switching operation to prevent frequent valve switching. For example, the RH range of 50-60% can be regarded as a "hysteresis zone." When the system detects gas within this range, the first and second stop valves 12, 13, and the first switch baffle 5 are all closed. As the airflow through the dehumidification pad 2 gradually mixes with the airflow in the cavity below the horizontal filter baffle 3, the gas humidity will eventually fall outside this range.

[0030] Within the fluctuating humidity range of a gas-liquid mixture (e.g., RH 50%-60%), conventional path switching control is prone to frequent switching, resulting in frequent valve opening and closing, impacting system stability and valve life. To address this issue, the present invention incorporates a hysteresis control module within the control unit. This prevents path switching when the humidity signal is within the hysteresis range (e.g., RH 50%-60%). This hysteresis logic control ensures that path switching is maintained when the humidity signal fluctuates, preventing frequent path switching and thus controlling system oscillation and frequent path switching, thereby enhancing system stability and control robustness.

[0031] Example 2

[0032] See also Figure 2 , a gas-water separation device includes 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, and several dehumidification air cushions 2 are arranged in parallel in the horizontal cavity, and a horizontal filter baffle 3 is fixedly installed at the lower end of the dehumidification air cushion 2, and a drainage device is provided at the lower end of the horizontal filter baffle 3, and a positioning plate is provided at the top of the dehumidification air cushion 2, and a first switch baffle 5 is provided at the end of the positioning plate away from the gas-water input pipe 1, and a water-isolating device is provided at the upper end of the first switch baffle 5, and the side end of the water-isolating device is connected to the rising chamber 21, and several trapezoidal baffles 6 are provided at intervals in the rising chamber 21, and the upper end of the rising chamber 21 is connected to the boosting pipe 7 with a conical structure, and the side end of the horizontal cavity 22 is connected to the low-humidity pipe 11, and the low-humidity pipe 11 is connected to the circulation chamber 23, and the upper end of the circulation chamber 23 is connected to the wide-mouth end of the boosting pipe 7, and the top of the circulation chamber 23 is provided with a hydrogen outlet 9.

[0033] The drainage device includes a drainage cavity 24 with a conical structure arranged 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 the drainage pipe 15 and the heating drainage valve 16.

[0034] The water-isolating device includes a fixing rod 17 fixed to the lower end of the bottom trapezoidal baffle 6, and a plurality of water-isolating discs 18 are arranged on the fixing rod 17. A second switch baffle 19 is installed on the side end of the water-isolating disc 18, and a through opening 20 is provided at the upper end of the second switch baffle 19.

[0035] The trapezoidal baffles 6 are symmetrically arranged relative to each other so that the rising chamber 21 forms an S-shaped passage.

[0036] A hydrogen regulating valve 8 is provided on the top of the circulation chamber 23 .

[0037] 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 thereof.

[0038] A second liquid level sensor 10 is provided at the bottom side of the rising chamber 21 .

[0039] A first temperature sensor 25 is installed at the inner end of the horizontal cavity 22 , a thin electric heating diaphragm 26 is installed on the side wall of the flow cavity 23 , a thick electric heating diaphragm 27 is installed on the trapezoidal baffle 6 , and a heat dissipation copper sheet 28 is provided on the top of the rising cavity 21 .

[0040] 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. After passing through the dehumidification pad 2, the gas directly enters the low humidity tube 11 and does not pass through multiple trapezoidal baffles 6, so the gas temperature changes slightly. The first temperature sensor 25 is installed at the inlet of this path to monitor the gas temperature changes in real time. When the gas temperature is lower than 60°C, the control unit starts the thin electric heating diaphragm 26. The thin electric heating film has a large power and 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-water separation. Finally, the gas is discharged from the hydrogen outlet 9 after the flow is adjusted by the hydrogen regulating valve 8.

[0041] In the low-humidity path, where the moisture content of the gas is low, traditional multi-stage separation strategies result in unnecessary separation operations, increasing the system's operating energy consumption. To address this issue, the present invention significantly improves separation efficiency and reduces energy losses in multi-stage separation by simplifying the separation structure and reducing the number of separation stages in the low-humidity path, ensuring efficient and cost-effective operation of the separation process.

[0042] 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 the high-humidity gas enters the high-humidity path. When the gas passes through the trapezoidal baffle 6 for gas-water separation, a thick electric heating diaphragm 27 is set to ensure temperature control in the wet gas path. The thick electric heating diaphragm 27 is activated only when the first switch baffle 5 is in the open state and the first temperature sensor 25 monitors the airflow temperature below 60°C. This is different from the temperature control in the low-humidity path. In the middle of the high-humidity path, the third temperature sensor 30 monitors the airflow temperature. When the temperature exceeds 70°C, the system turns off the thick electric heating diaphragm 27 to prevent excessive temperature from affecting the water vapor separation efficiency. At the same time, the heat dissipation copper sheet 28 at the top activates passive cooling to ensure that high temperature does not affect the gas-water separation process. The second temperature sensor 29 is installed at the top of the high-humidity path to monitor the temperature of the final exhaust gas in real time, ensuring that the output gas temperature is always maintained within the optimal range of 60-70°C, thereby ensuring the stability of hydrogen recovery and the efficiency of system operation. The gas then passes through a booster pipe to increase its pressure to reduce the pressure drop, and finally flows out of the hydrogen outlet 9 after the flow rate is controlled by a hydrogen regulating valve 8.

[0043] In the high-humidity path, the gas-liquid mixture has a high moisture content. A single separation device cannot fully remove the moisture from the gas, resulting in excessive moisture content in the exhaust gas, affecting the system's gas purity. To address this issue, the present invention incorporates a multi-stage gas-liquid separation device in the high-humidity path to achieve deep separation of the gas-liquid mixture, ensuring that the moisture content of the exhaust gas remains within the target range required by the system.

[0044] Furthermore, if condensate generated during the gas-liquid separation process in high-humidity paths is not promptly drained, it can lead to liquid accumulation within the paths, further obstructing gas flow and increasing flow resistance. To address this issue, the present invention incorporates multi-point liquid collection and centralized discharge devices to ensure liquid is not trapped within the paths, preventing water blockage and ensuring continuous and stable gas flow.

[0045] In addition, in the high-humidity path, the gas needs to pass through multiple trapezoidal baffles 6 to achieve multi-stage separation. The presence of these baffles significantly increases the resistance to gas flow, resulting in excessive pressure drop between the inlet and outlet of the path, reduced gas flow rate, and even possible instability of the airflow in the system. In order to solve this problem, the present invention adds a booster tube 7 to the high-humidity path. The function of the booster tube 7 is to increase the gas pressure at the key position of the path and compensate for the pressure drop introduced in the path due to increased flow resistance. By introducing a local pressure increase 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 of the high-humidity path and the stability of the gas flow rate.

[0046] The entire system is based on intelligent temperature and humidity control logic, achieving precise gas-water separation management through the coordinated control of humidity and temperature sensors. The humidity control component ensures that the gas enters the appropriate separation area by switching the baffle path, while the temperature control component uses electric heating film and heat dissipation copper sheets to maintain the gas-water separator operating within the optimal temperature range. Combined with a hysteresis control mechanism, this system effectively avoids frequent switching caused by ambient humidity fluctuations, reducing energy consumption, extending equipment life, and ensuring the long-term stable operation of the fuel cell system.

[0047] It should be understood by those skilled in the art that the above embodiments are merely for the purpose of illustrating the present invention clearly, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may 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: The invention comprises a separation device body, wherein the bottom of the side end of the separation device body is provided with an air-water inlet pipe (1), a horizontal cavity (22) is provided inside the body, a plurality 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 the end of the positioning plate away from the air-water inlet pipe (1), a water-isolating device is provided at the upper end of the first switch baffle (5), a side end of the water-isolating device is connected to the rising cavity (21), a plurality of trapezoidal baffles (6) arranged at intervals are provided in the rising cavity (21), and the upper end of the rising cavity (21) is connected to a conical The boosting tube (7) of the structure is connected to the low humidity tube (11) at the side end of the horizontal cavity (22), the low humidity tube (11) is connected to the circulation cavity (23), the upper end of the circulation cavity (23) is connected to the wide end of the boosting tube (7), and the top of the circulation cavity (23) is provided with a hydrogen outlet (9); the water-isolating device includes a fixing rod (17) fixed to the lower end of the bottom trapezoidal baffle (6), a plurality of water-isolating discs (18) are arranged on the fixing rod (17), a second switch baffle (19) is installed at the side end of the water-isolating disc (18), and a through-hole (20) is provided at the upper end of the second switch baffle (19); a stop valve is provided at the upper end of the low humidity tube (11); and a temperature sensor is installed at the inner end of the horizontal cavity (22).

2. The gas-water separation device according to claim 1, characterized in that: The drainage device comprises a drainage cavity (24) provided at the lower end of the horizontal filter baffle (3) and having a conical structure, a first liquid level sensor (4) being provided in the drainage cavity (24), and the bottom of the drainage cavity (24) being connected to a drainage pipe (15) and a heated drainage valve (16).

3. The gas-water separation device according to claim 1, characterized in that: The trapezoidal baffles (6) are symmetrically arranged relative to each other so that the rising chamber (21) forms an S-shaped passage.

4. The gas-water separation device according to claim 1, characterized in that: A hydrogen regulating valve (8) is provided at the top of the circulation chamber (23).

5. The gas-water separation device according to claim 1, characterized in that: The low humidity pipe (11) is provided with a first stop valve (12) at the upper end and a second stop valve (13) at the lower end.

6. The gas-water separation device according to claim 1, characterized in that: A second liquid level sensor (10) is provided at the bottom side end of the rising chamber (21).

7. The gas-water separation device according to claim 1, characterized in that: A first temperature sensor (25) is installed at the inner end of the horizontal cavity (22), a thin electric heating diaphragm (26) is installed on the side wall of the flow cavity (23), a thick electric heating diaphragm (27) is installed on the trapezoidal baffle (6), and a heat dissipation copper sheet (28) is provided on the top of the rising cavity (21).

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