Gas-liquid separator and hydrogen production system

Abstract

The application discloses a gas-liquid separator and a hydrogen production system, and belongs to the technical field of hydrogen production. The gas-liquid separator comprises a shell and a partition plate arranged in the shell, the shell forms a first chamber and a second chamber on the two sides of the partition plate, the first chamber is provided with a gas outlet, a liquid return port and a pipe penetrating hole, a first channel communicating the first chamber and the second chamber is arranged above the partition plate, a second channel communicating the first chamber and the second chamber is arranged below the partition plate, and an inlet pipe extends into the shell from the pipe penetrating hole and communicates with the second chamber after penetrating through the partition plate. In the technical scheme of the application, the inlet pipe and the partition plate form the bidirectional travel of fluid in the shell, which is helpful to increase the time of gas phase liquid removal and liquid phase gas separation, thereby improving the gas-liquid separation efficiency.

Description

Technical Field

[0001] This application belongs to the field of hydrogen production technology, and in particular relates to a gas-liquid separator and a hydrogen production system. Background Technology

[0002] In the process of hydrogen production through water electrolysis, gas separation equipment is a key component of the hydrogen production unit, used to separate pure hydrogen from the mixed gas produced by the electrolyzer. In related technologies, the gas-liquid mixture typically enters from one side of the separator and exits from the other, resulting in a single-pass flow within the separator. The limited residence time of the gas and liquid makes it difficult to balance the separator and separation efficiency. In addition, some separators use submerged feeding, leading to intense gas-liquid mixing at the separator inlet, which affects the gas-liquid separation efficiency, indicating room for improvement. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes a gas-liquid separator and a hydrogen production system that can improve gas-liquid separation efficiency.

[0004] In a first aspect, this application provides a gas-liquid separator, comprising: The housing and a partition disposed within the housing, wherein the housing forms a first chamber and a second chamber on both sides of the partition, the first chamber having an air outlet, a liquid return outlet and a pipe through-hole, a first channel connecting the first chamber and the second chamber is provided above the partition, and a second channel connecting the first chamber and the second chamber is provided below the partition; An inlet pipe extends into the housing through the pipe opening and communicates with the second chamber after passing through the partition.

[0005] In the above technical solution, the bidirectional flow of fluid within the shell is formed by the inlet pipe and the baffle, which helps to increase the time for gas phase deliquescence and liquid phase gas separation, thereby improving the gas-liquid separation efficiency.

[0006] According to one embodiment of this application, the pipe opening is located at the first end of the housing, and the vertical distance from the partition to the first end of the housing is greater than the vertical distance from the partition to the second end of the housing. According to one embodiment of this application, the gas-liquid separator further includes a flow guiding structure, which is installed in the first channel and located on the side of the partition facing the gas outlet.

[0007] According to one embodiment of this application, the flow guiding structure includes a mounting plate and a plurality of arc-shaped plates, the mounting plate being connected to the partition, the arc-shaped plates being mounted on the mounting plate, and the center of curvature of the arc-shaped plates being located on the side close to the first channel.

[0008] According to one embodiment of this application, the plurality of arc-shaped plates include multiple groups spaced apart along a direction away from the first channel, and the distance between the arc-shaped plates in the same group gradually decreases along the direction away from the first channel.

[0009] According to one embodiment of this application, the vertical distance from the air outlet to the pipe opening is less than the vertical distance from the air outlet to the partition, and the vertical distance from the liquid return port to the pipe opening is less than the vertical distance from the liquid return port to the partition.

[0010] According to one embodiment of this application, the outlet of the inlet pipe is located vertically between the first channel and the second channel.

[0011] According to one embodiment of this application, the first channel is a through hole.

[0012] According to one embodiment of this application, the partition has a notch at its edge to form the second channel.

[0013] According to one embodiment of this application, the first channel is a through hole, and the edge of the partition is provided with a notch to form the second channel.

[0014] According to one embodiment of this application, the inlet pipe includes an inlet section, a speed-reducing section, and a flow-stabilizing section connected in sequence, wherein the flow cross-sectional area of ​​the speed-reducing section gradually increases from the end connected to the inlet section to the end connected to the flow-stabilizing section.

[0015] According to one embodiment of this application, the distance between the inlet pipe and the bottom wall of the housing is higher than the liquid level in the first chamber.

[0016] Secondly, this application provides a hydrogen production system, including a gas-liquid separator as described in any one of the above-mentioned methods.

[0017] In the above technical solution, the effective coordination of hydrogen production unit, purification unit and drying equipment can effectively remove impurities from hydrogen, improve its purity and quality, and provide a strong guarantee for the stable operation of hydrogen production system.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of the gas-liquid separator provided in the embodiments of this application; Figure 2This is a second schematic diagram of the gas-liquid separator provided in the embodiments of this application; Figure 3 This is one of the structural schematic diagrams of the flow guiding structure provided in the embodiments of this application.

[0020] Figure label: Gas-liquid separator 1; Shell 10, cylinder 110, end cap 120; Partition 20, first channel 210, second channel 220; First chamber 30, tube opening 310, air outlet 320, liquid return port 330; Second chamber 40; Inlet pipe 50, inlet 501, outlet 502, inlet section 510, velocity reduction section 520, flow stabilization section 530; Flow guiding structure 60, mounting plate 610, arc plate 620; 70. Wire mesh fog eliminator. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes a gas-liquid separator and a hydrogen production system that can improve gas-liquid separation efficiency.

[0023] The following is for reference. Figures 1-3 A gas-liquid separator 1 according to an embodiment of this application is described.

[0024] like Figure 1 and Figure 2 As shown, the gas-liquid separator 1 includes: a housing 10, a partition 20 disposed within the housing 10, and an inlet pipe 50. The housing 10 forms a first chamber 30 and a second chamber 40 on both sides of the partition 20. The first chamber 30 has an air outlet 320, a liquid return outlet 330, and a pipe through-hole 310. A first channel 210 connecting the first chamber 30 and the second chamber 40 is provided above the partition 20, and a second channel 220 connecting the first chamber 30 and the second chamber 40 is provided below the partition 20. The inlet pipe 50 extends into the housing 10 from the pipe through-hole 310 and connects to the second chamber 40 after passing through the partition 20.

[0025] In this embodiment, the housing 10 of the gas-liquid separator 1 includes, but is not limited to, a horizontal cylindrical shape. The horizontal gas-liquid separator 1 has a larger gas-liquid separation interface when processing large flow rates of gas.

[0026] The shell 10 includes a cylindrical body 110 and end caps 120. The two ends of the cylindrical body 110 are welded together with elliptical or hemispherical end caps 120 to give the shell 10 sufficient strength and pressure-bearing capacity.

[0027] The housing 10 has multiple interfaces, including at least a pipe inlet 310, an air outlet 320, and a liquid return outlet 330. The gas-liquid mixture enters the gas-liquid separator 1 from the inlet 501 of the inlet pipe 50. After separation, the gas flows out from the air outlet 320 and the liquid flows out from the liquid return outlet 330.

[0028] Furthermore, the interfaces on the housing 10 may also include drain ports and instrument interfaces, for example, the drain port is located at the bottom and is used to discharge solid impurities inside the housing 10, and the instrument interface is used to connect to pressure gauges, level gauges or safety valves.

[0029] It should be noted that a certain pressure is maintained inside the shell 10 so that the separated gas and liquid can flow out smoothly.

[0030] The partition 20 of the gas-liquid separator 1 is disposed inside the housing 10, dividing the internal space of the housing 10 into a first chamber 30 and a second chamber 40. The first chamber 30 and the second chamber 40 are interconnected through a channel on the partition 20, and the vertical distance from the partition 20 to the first end of the housing 10 is greater than the vertical distance from the partition 20 to the second end of the housing 10.

[0031] The first chamber 30 is located on the side of the partition 20 facing the first end of the housing 10, and the second chamber 40 is located on the side of the partition 20 facing the second end of the housing 10, that is, the volume of the first chamber 30 is greater than the volume of the second chamber 40.

[0032] In addition, the inlet pipe 50 extends from the first end of the housing 10 and communicates with the second chamber 40 after passing through the partition 20. The gas-liquid mixture enters the inlet pipe 50 of the gas-liquid separator 1 from the inlet 501, flows smoothly in the inlet pipe 50 and enters the second chamber 40. The gas in the second chamber 40 enters the first chamber 30 through the first channel 210 and flows toward the gas outlet 320 located at the top of the first chamber 30. The liquid in the second chamber 40 enters the first chamber 30 through the second channel 220 and flows toward the liquid return port 330 located at the bottom of the first chamber 30.

[0033] It is understandable that both the gas phase and the liquid phase flow through the inlet pipe 50 and turn back after entering the second chamber 40, that is, they complete a bidirectional stroke in the gas-liquid separator 1, which has a longer flow path. This can increase the time that the gas phase and the liquid phase spend in the gas-liquid separator 1, thereby improving the gas-liquid separation efficiency.

[0034] In the process of hydrogen production through water electrolysis, gas separation equipment is a key component of the hydrogen production unit, used to separate pure hydrogen from the mixed gas produced by the electrolyzer. In related technologies, the gas-liquid mixture typically enters from one side of the separator and exits from the other, resulting in a single-pass flow within the separator. The limited residence time of the gas and liquid makes it difficult to balance the separator and separation efficiency. In addition, some separators use submerged feeding, leading to intense gas-liquid mixing at the separator inlet, which affects the gas-liquid separation efficiency, indicating room for improvement.

[0035] This application provides a partition 20 inside the housing 10, and the partition 20 is close to the second end of the housing 10. The inlet pipe 50 extends from the first end of the housing 10 and passes through the partition 20, which can realize the dual-pass flow of gas phase and liquid phase inside the gas-liquid separator 1.

[0036] The gas-liquid mixture enters the inlet pipe 50 from the first end of the shell 10 and is turned back on the side of the partition 20 near the second end of the shell 10, completing a bidirectional stroke in the gas-liquid separator 1. This can increase the time for gas phase deliquidation and liquid phase gas separation, thereby improving the gas-liquid separation efficiency.

[0037] Furthermore, compared to a single-pass separator, the size of the gas-liquid separator 1 of this application can be significantly reduced without affecting the gas-liquid separation effect, thereby reducing the space occupation and cost of the equipment.

[0038] According to the gas-liquid separator 1 provided in the embodiments of this application, the inlet pipe 50 and the baffle 20 form a bidirectional flow of fluid within the housing 10, which helps to increase the time for gas phase deliquidation and liquid phase gas separation, thereby improving the gas-liquid separation efficiency.

[0039] In some embodiments, such as Figure 2 As shown, the pipe opening 310 is located at the first end of the housing 10, the vertical distance from the partition 20 to the first end of the housing 10 is L1, and the vertical distance from the partition 20 to the second end of the housing 10 is L2, satisfying: L1≥3L2.

[0040] In this embodiment, the vertical distance from the partition 20 to the first end of the housing 10 and the vertical distance from the partition 20 to the second end of the housing 10 correspond to the volumes of the first chamber 30 and the second chamber 40, respectively. After entering the gas-liquid separator 1, the fluid flows from the first end of the housing 10 to the second chamber 40 on the other side of the partition 20 through the inlet pipe 50, and then turns back from the second chamber 40 into the first chamber 30, and flows to the first end of the housing 10.

[0041] The greater the vertical distance from the partition 20 to the first end of the housing 10, the longer the fluid travels in the gas-liquid separator 1, which helps to extend the residence time of gas and liquid in the gas-liquid separator 1, thereby improving the gas-liquid separation effect.

[0042] In some embodiments, such as Figure 3 As shown, the gas-liquid separator 1 may also include a flow guiding structure 60, which is installed in the first channel 210 and located on the side of the partition 20 facing the gas outlet 320.

[0043] In this embodiment, a first channel 210 connecting the first chamber 30 and the second chamber 40 is provided above the partition 20. The flow guiding structure 60 is connected to the side of the partition 20 facing the air outlet 320, and the flow guiding structure 60 and the first channel 210 are directly opposite each other along the normal direction of the partition 20.

[0044] After passing through the first channel 210, the airflow in the second chamber 40 flows through the guide structure 60. The airflow collides with the guide structure 60, and the flow direction of the gas in the airflow changes. However, the inertia of the liquid droplets in the airflow is much greater than that of the gas, so the liquid droplets cannot turn quickly and directly hit the guide structure 60 and fall down, thereby removing some of the liquid droplets carried in the airflow and improving the gas-liquid separation efficiency.

[0045] In some embodiments, such as Figure 3 As shown, the flow guiding structure 60 may include a mounting plate 610 and a plurality of arc-shaped plates 620. The mounting plate 610 is connected to the partition plate 20, and the arc-shaped plates 620 are mounted on the mounting plate 610. The center of curvature of the arc-shaped plates 620 is located on the side close to the first channel 210.

[0046] In this embodiment, the flow guiding structure 60 may include two mounting plates 610 that are spaced apart vertically, an arc-shaped plate 620 is connected between the two mounting plates 610, and the mounting plates 610 are connected to the side of the partition 20 facing the air outlet 320.

[0047] The curvature center of the arc plate 620 is located on the side close to the first channel 210. The airflow passing through the first channel 210 is turned by the arc plate 620. For example, the turning angle can be approximately right angle. The airflow enters from the end of the guide structure 60 and exits from both sides of the guide structure 60.

[0048] Understandably, the flow guiding structure 60 helps droplet collision and coalescence and uniform gas distribution, thereby improving gas-liquid separation efficiency.

[0049] In some embodiments, such as Figure 3 As shown, the multiple arc-shaped plates 620 include multiple groups that are spaced apart along the direction away from the first channel 210, and the distance between the arc-shaped plates 620 in the same group gradually decreases along the direction away from the first channel 210.

[0050] In this embodiment, the multiple arc plates 620 can be divided into multiple groups, and the multiple groups of arc plates 620 are spaced apart along the normal direction of the partition 20. Each group includes two arc plates 620, wherein the two arc plates 620 in the group of arc plates 620 farthest from the partition 20 are in contact with each other, and the two arc plates 620 in the other groups of arc plates 620 are spaced apart.

[0051] Furthermore, the distance between the arc plates 620 in the same group gradually decreases in the direction away from the first channel 210, forming a V-shaped structure between the arc plates 620. A portion of the airflow passing through the first channel 210 flows out from the gap between the arc plates 620 in different groups, and the remaining airflow continues to flow in the direction away from the first channel 210.

[0052] In other words, a portion of the airflow flows out from both sides, while the remaining airflow continues to flow away from the first channel 210.

[0053] The airflow flows through multiple sets of arc-shaped plates 620 in sequence and undergoes multiple stage-by-stage diversions. When the airflow flows through the set of arc-shaped plates 620 furthest from the partition 20, two arc-shaped plates 620 in the set of arc-shaped plates 620 furthest from the partition 20 come into contact, and the airflow flows out from both sides.

[0054] Understandably, the distance between the arc plates 620 in the same group gradually decreases in the direction away from the first channel 210, which can split the airflow step by step and help improve the gas-liquid separation efficiency.

[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, the vertical distance from the air outlet 320 to the pipe opening 310 is less than the vertical distance from the air outlet 320 to the baffle 20, and the vertical distance from the return liquid outlet 330 to the pipe opening 310 is less than the vertical distance from the return liquid outlet 330 to the baffle 20.

[0056] In this embodiment, the top of the housing 10 has an air outlet 320 and the bottom of the housing 10 has a liquid return outlet 330. Both the air outlet 320 and the liquid return outlet 330 are connected to the first chamber 30, that is, the air outlet 320 and the liquid return outlet 330 are both located on the side of the partition 20 near the first end of the housing 10.

[0057] The vertical distance from the air outlet 320 to the first end of the housing 10 is less than the vertical distance from the air outlet 320 to the partition 20, the vertical distance from the liquid return port 330 to the first end of the housing 10 is less than the vertical distance from the liquid return port 330 to the partition 20, and the vertical distance from the air outlet 320 to the first end of the housing 10 is less than the vertical distance from the liquid return port 330 to the first end of the housing 10.

[0058] In addition, the gas outlet 320 and the liquid return outlet 330 are close to the first end of the housing 10, the inlet 501 of the inlet pipe 50 is located at the first end of the housing 10, and the outlet 502 of the inlet pipe 50 is close to the second end of the housing 10. The gas phase and the liquid phase travel within the gas-liquid separator 1 for nearly twice the length of the inlet pipe 50.

[0059] It is understandable that the gas outlet 320, liquid return port 330 and pipe penetration 310 are all located on the same side of the gas-liquid separator 1, which helps to simplify the piping arrangement between the gas-liquid separator 1 and other equipment.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the outlet 502 of the inlet pipe 50 is located vertically between the first channel 210 and the second channel 220.

[0061] In this embodiment, a first channel 210 connecting the first chamber 30 and the second chamber 40 is provided above the partition 20, and a second channel 220 connecting the first chamber 30 and the second chamber 40 is provided below the partition 20. The inlet pipe 50 passes through the middle of the partition 20.

[0062] The outlet 502 of the inlet pipe 50 is located below the first channel 210, and the outlet 502 of the inlet pipe 50 is located above the second channel 220. The gas-liquid mixture flows out from the outlet 502 of the inlet pipe 50. The liquid falls to the bottom of the second chamber 40 and enters the first chamber 30 through the second channel 220. The gas rises to the top of the second chamber 40 and enters the first chamber 30 through the first channel 210.

[0063] It is understandable that the outlet 502 of the inlet pipe 50 is located vertically between the first channel 210 and the second channel 220, using gravity to achieve the initial separation between the gas phase and the liquid phase.

[0064] In some embodiments, such as Figure 2 As shown, a first channel 210 connecting the first chamber 30 and the second chamber 40 is provided above the partition 20, and a second channel 220 connecting the first chamber 30 and the second chamber 40 is provided below the partition 20.

[0065] In this embodiment, the first chamber 30 and the second chamber 40 are connected by a first channel 210 and a second channel 220, wherein the first channel 210 is used for gas to pass through and the second channel 220 is used for liquid to pass through. Liquid in the second chamber 40 enters the first chamber 30 through the second channel 220, and gas in the second chamber 40 enters the first chamber 30 through the first channel 210.

[0066] For example, the first channel 210 and the second channel 220 can be through holes, that is, holes are drilled in the partition 20 to form channels.

[0067] For example, the first channel 210 and the second channel 220 can be notches, and the partition 20 has notches at its edges, forming a channel together with the housing 10.

[0068] The first channel 210 and the second channel 220 both have various structural forms, including but not limited to: Example 1: The first channel 210 is a through hole, and the second channel 220 is a notch.

[0069] Example 2: The first channel 210 is a notch, and the second channel 220 is a through hole.

[0070] Example 3: Both the first channel 210 and the second channel 220 are through holes.

[0071] Example 4: Both the first channel 210 and the second channel 220 are gaps.

[0072] It should be noted that the first channel 210 is a through hole, which facilitates the installation of the flow guiding structure 60 and helps guide the gas flow direction, while the second channel 220 is a notch, which helps the liquid flow.

[0073] In some embodiments, such as Figure 2 As shown, the inlet pipe 50 includes an inlet section 510, a velocity reduction section 520 and a flow stabilization section 530 connected in sequence. The flow cross-sectional area of ​​the velocity reduction section 520 gradually increases from the end connected to the inlet section 510 to the end connected to the flow stabilization section 530.

[0074] In this embodiment, the inlet pipe 50 includes an inlet section 510, a speed-reducing section 520, and a flow-stabilizing section 530 connected in sequence. The flow cross-sectional area of ​​the inlet section 510 and the flow-stabilizing section 530 remains unchanged, while the flow cross-sectional area of ​​the speed-reducing section 520 gradually increases from the end connected to the inlet section 510 to the end connected to the flow-stabilizing section 530.

[0075] When the fluid flows through the deceleration section 520, the flow cross-sectional area gradually increases and the fluid velocity gradually decreases. Finally, it smoothly enters the steady flow section 530. In the relatively long steady flow section 530, the gas phase and liquid phase gradually separate during the steady flow process. After flowing out of the steady flow section 530, the gas phase and liquid phase are completely separated.

[0076] In some embodiments, the distance between the inlet pipe 50 and the bottom wall of the housing 10 is higher than the liquid level in the first chamber 30.

[0077] In this embodiment, the inlet 501 of the gas-liquid separator 1 is connected to the outlet of the electrolytic cell, and the return port 330 of the gas-liquid separator 1 is connected to the inlet of the electrolytic cell. The liquid in the gas-liquid separator 1 will flow back to the electrolytic cell. During the operation of the gas-liquid separator 1, there is a certain liquid level in the first chamber 30.

[0078] The vertical distance between the inlet pipe 50 and the bottom wall of the shell 10 is higher than the liquid level in the first chamber 30, which helps to maintain a stable settling environment, reduce secondary entrainment caused by liquid level fluctuations, and thus improve separation efficiency.

[0079] In some embodiments, such as Figure 2 As shown, the gas-liquid separator 1 may also include a wire mesh mist eliminator 70 installed at the gas outlet 320.

[0080] In this embodiment, the gas obtained after separation in the gas-liquid separator 1 may contain some fine droplets and mist (typically with a diameter of 1-50 micrometers). The wire mesh mist trap 70 can be used to capture these fine droplets and mist before the gas leaves the separator.

[0081] The wire mesh fog eliminator 70 can be a cylindrical or plate-shaped pad with a large number of pores formed by weaving, winding and pressing extremely fine metal or plastic wires. When gas carrying fine droplets passes through the tortuous pores of the wire mesh, droplets larger than the gaps between the wires are directly intercepted. Some droplets directly hit the surface of the wires and adhere to the surface of the wires, while other smaller droplets collide with the wires due to irregular Brownian motion.

[0082] This application also provides a hydrogen production system, including a gas-liquid separator 1.

[0083] In this embodiment, the hydrogen production system includes at least a hydrogen production device, a purification device, and a drying device. The hydrogen production device includes an electrolyzer and a gas-liquid separator 1. The inlet 501 of the gas-liquid separator 1 is usually connected to the outlet of the electrolyzer.

[0084] An electrolytic cell typically includes a cathode, an anode, and an electrolyte. The electrolyte is usually an alkaline solution (such as sodium hydroxide, potassium hydroxide, etc.) or pure water. When an electric current passes through the electrolytic cell, water molecules gain electrons at the cathode and are reduced to hydrogen gas, while they lose electrons at the anode and are oxidized to oxygen gas.

[0085] The main function of the gas-liquid separator 1 is to separate the hydrogen and oxygen generated during the electrolysis process from the electrolyte. In the electrolytic cell, hydrogen and oxygen usually exist in the electrolyte in the form of bubbles. The gas-liquid separator 1 uses the buoyancy or other physical properties of these gases to separate them from the solution. The separated gas can be further purified in a purification device to remove oxygen and most of the water from the crude hydrogen. The liquid is returned to the electrolytic cell through a circulation loop.

[0086] The hydrogen production system provided in the embodiments of this application, through the effective cooperation of the hydrogen production device, purification device and drying equipment, can effectively remove impurities from hydrogen, improve its purity and quality, and provide a strong guarantee for the stable operation of the hydrogen production system.

[0087] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0088] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0089] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0090] In the description of this application, "multiple" means two or more.

[0091] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0092] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas-liquid separator, characterized in that, include: The housing (10) and the partition (20) disposed within the housing (10) form a first chamber (30) and a second chamber (40) on both sides of the partition (20). The first chamber (30) has an air outlet (320), a liquid return outlet (330) and a pipe through-hole (310). A first channel (210) connecting the first chamber (30) and the second chamber (40) is provided above the partition (20), and a second channel (220) connecting the first chamber (30) and the second chamber (40) is provided below the partition (20). An inlet pipe (50) extends into the housing (10) from the pipe opening (310) and communicates with the second chamber (40) after passing through the partition (20).

2. The gas-liquid separator according to claim 1, characterized in that, The tube opening (310) is located at the first end of the housing (10), and the vertical distance from the partition (20) to the first end of the housing (10) is greater than the vertical distance from the partition (20) to the second end of the housing (10).

3. The gas-liquid separator according to claim 1, characterized in that, The gas-liquid separator further includes a flow guiding structure (60), which is installed in the first channel (210) and located on the side of the partition (20) facing the gas outlet (320).

4. The gas-liquid separator according to claim 3, characterized in that, The flow guiding structure (60) includes a mounting plate (610) and a plurality of arc plates (620). The mounting plate (610) is connected to the partition (20), and the arc plates (620) are mounted on the mounting plate (610). The center of curvature of the arc plates (620) is located on the side close to the first channel (210).

5. The gas-liquid separator according to claim 4, characterized in that, The plurality of arc plates (620) include multiple groups spaced apart along a direction away from the first channel (210), and the distance between the arc plates (620) in the same group gradually decreases along a direction away from the first channel (210).

6. The gas-liquid separator according to claim 1, characterized in that, The vertical distance from the air outlet (320) to the pipe opening (310) is less than the vertical distance from the air outlet (320) to the partition (20), and the vertical distance from the liquid return port (330) to the pipe opening (310) is less than the vertical distance from the liquid return port (330) to the partition (20); or, The outlet (502) of the inlet pipe (50) is located vertically between the first channel (210) and the second channel (220).

7. The gas-liquid separator according to claim 1, characterized in that, The first channel (210) is a through hole; and / or, The partition (20) has a notch at its edge to form the second channel (220).

8. The gas-liquid separator according to any one of claims 1-7, characterized in that, The inlet pipe (50) includes an inlet section (510), a speed-reducing section (520) and a flow-stabilizing section (530) connected in sequence. The flow cross-sectional area of ​​the speed-reducing section (520) gradually increases from the end connected to the inlet section (510) to the end connected to the flow-stabilizing section (530).

9. The gas-liquid separator according to any one of claims 1-7, characterized in that, The distance between the inlet pipe (50) and the bottom wall of the shell (10) is higher than the liquid level in the first chamber (30).

10. A hydrogen production system, characterized in that, Includes the gas-liquid separator as described in any one of claims 1-9.

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