Gas-water separator

Abstract

The invention provides a gas-water separator. The gas-water separator comprises a shell and a cover connected with the shell in a sealed mode. A gas inlet cavity, a gas inlet flow channel, a diffusion flow channel, a separation cavity and a liquid collection cavity which are communicated in sequence are formed in the shell; an annular step-shaped structure is formed between the separation cavity and the liquid collection cavity; the cover body comprises a first circulation joint and a first end plate which are connected with each other, and the first end plate is fixedly connected with the top surface of the shell; the first circulation joint extends into the separation cavity from the assembly opening; a hydrophobic coating is coated on an air outlet flow channel in the first circulation joint, a sealing structure, an air uniformizing groove and a plurality of first inclined flow channels with the same inclination direction are sequentially arranged on the outer side wall of the air outlet flow channel, and the air uniformizing groove is communicated with the diffusion flow channel and the first inclined flow channels respectively; the gas-water separator is compact in structure and high in integration level, the gas-liquid separation efficiency and the separation effect can be improved, and miniaturization design of the gas-water separator can be achieved easily.

Description

Technical Field

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

[0002] Gas-liquid separators are key components in compressed air systems and gas purification equipment. They remove moisture from compressed gas to ensure the normal operation of downstream equipment and extend its service life. With continuous technological innovation, gas-liquid separation technology is developing towards higher efficiency, energy saving, miniaturization, and integration. Highly efficient and reliable gas-liquid separation technology not only improves equipment operating efficiency but also reduces maintenance costs and ensures the overall stability and reliability of the system. Currently, common gas-liquid separators on the market mainly include gravity settling, centrifugal, and filtration types.

[0003] In related technologies, in order to improve the gas-liquid separation efficiency of gas-liquid separators, it is necessary to add complex separation structures inside the gas-liquid separator to cope with different stages of gas-liquid separation. Due to the requirements of different processing stages in the gas-liquid separation process, it is currently difficult to effectively integrate complex separation structures, resulting in a large overall volume and high redundancy of the gas-liquid separator, thereby increasing the overall cost of the gas-liquid separator. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a gas-water separator to solve some or all of the technical problems mentioned in this application.

[0005] This application provides a gas-liquid separator, including a housing and a cover that is sealed to the housing; The housing contains a sequentially connected air inlet chamber, an air inlet channel, a diffusion channel, a separation chamber, and a liquid collection chamber. The air inlet chamber forms an air inlet on the side of the housing, the separation chamber forms an assembly port on the top surface of the housing, and the bottom surface of the housing has a liquid outlet that communicates with the bottom of the liquid collection chamber. Along the height direction of the housing, the outlet end of the diffusion channel is located below the inlet end of the air inlet channel, and the separation chamber is located above the liquid collection chamber. The projected area of ​​the separation chamber is larger than the projected area of ​​the liquid collection chamber, so as to form a ring-shaped stepped structure between the two. The cover includes a first flow section and a first end plate connected together. The first end plate is fixedly connected to the top surface of the housing. The first flow section extends from the assembly port into the separation cavity. An air outlet channel communicating with the separation cavity is provided in the first flow section. The inner sidewall of the air outlet channel is coated with a composite hydrophobic coating. The outer sidewall of the first flow section abuts against the inner sidewall of the separation cavity. Along the height direction of the housing, the outer sidewall of the first flow section is provided with a sealing structure, a gas equalization groove, and a plurality of first oblique flow channels with the same inclination direction. The sealing structure and the gas equalization groove are both surrounding the first flow section. The gas equalization groove is away from the first end plate relative to the sealing structure and is respectively connected to the diffusion channel and the first oblique flow channel. The plurality of oblique flow channels are evenly arranged on the outer sidewall of the first flow section and are connected to the separation cavity.

[0006] As can be seen from the above, this application provides a gas-liquid separator. This gas-liquid separator improves the integration of the gas-liquid separator by integrating the gas equalization groove and the first inclined flow channel into the cover body, and integrating different gas flow channels and chambers into the shell, thereby reducing its overall size and making it more compact. By setting an annular gas equalization groove on the outer wall of the first flow section and connecting it to each first inclined flow channel, the water-containing compressed gas can be buffered and regulated to uniformly introduce the water-containing compressed gas into the first inclined flow channel, thereby enhancing the stability of the subsequently formed rotating airflow and the gas-liquid separation effect. Multiple first inclined flow channels can guide the airflow to generate a strong and stable rotating centrifugal force, enhancing the effect of throwing off liquid droplets, thereby improving the gas-liquid separation efficiency. Coating the inner wall of the outlet airflow channel with a composite hydrophobic coating can prevent liquid droplets from adhering to the inner wall of the outlet airflow channel, reducing the probability of liquid droplet entrainment by the separated gas, thereby facilitating the realization of efficient gas-liquid separation and miniaturized design of the gas-liquid separator. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a three-dimensional structural diagram of the gas-water separator in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the shell in an embodiment of this application; Figure 3 This is a cross-sectional schematic diagram of the shell in an embodiment of this application; Figure 4 This is a side view of the cover in an embodiment of this application; Figure 5 This is a three-dimensional structural diagram of the first type of cover in the embodiments of this application; Figure 6 This is a cross-sectional schematic diagram of a gas-water separator with a first type of cover in an embodiment of this application; Figure 7 This is a three-dimensional structural diagram of the second type of cover in the embodiments of this application; Figure 8 This is a cross-sectional schematic diagram of a gas-water separator with a second type of cover in an embodiment of this application; Figure 9 This refers to the position pipe system of the first and second flow guiding structures within the air outlet channel in the embodiments of this application.

[0009] Explanation of reference numerals in the attached figures: 1. Housing; 11. Inlet chamber; 111. Inlet port; 12. Inlet flow channel; 121. Inspection port; 13. Diffusion channel; 14. Separation chamber; 141. Assembly port; 15. Liquid collection chamber; 151. Liquid outlet; 16. Inclined surface; 17. Drainage pipe; 18. First detection interface; 19. Second detection interface; 2. Cover body; 21. First flow section; 211. Outlet air passage; 222. Sealing structure; 2221. Sealing ring; 2222. Sealing gasket; 223. Air distribution groove; 224. First inclined flow channel; 22. First end plate; 225. Isolation part; 2251. Second inclined flow channel; 23. Second flow section; 231. Transfer flow channel; 232. Water removal structure; 24. Second end plate; 241. Flange face; 251. Connection hole.

[0010] 301. Columnar structure; 302. First flow guiding structure; 303. Second flow guiding structure. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0012] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0013] In this article, it is important to understand that any number of elements in the accompanying figures is for illustrative purposes and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0014] To ensure that gas-liquid separators can meet the functional requirements of related equipment, their functionality has gradually expanded from basic water removal to higher requirements such as high efficiency, energy saving, miniaturization, and multi-functional integration. In practical applications, efficient and reliable gas-liquid separation technology can not only improve the operating efficiency of related equipment but also reduce maintenance costs, thus possessing significant application value and far-reaching impact in modern industrial production.

[0015] Among them, gas-liquid separators can employ separation technologies such as gravity settling, centrifugation, and filtration to achieve gas-liquid separation. Specifically, gravity settling extends the gas flow path, allowing water to settle naturally under gravity; centrifugation uses the centrifugal force generated by high-speed rotation to throw liquid droplets entrained in the gas against the container wall to achieve gas-liquid separation; filtration relies on high-precision filter elements to intercept and condense water, thereby achieving effective separation between gas and water. More specifically, to further improve the separation effect between gas and water, some gas-liquid separation schemes adopt multi-stage composite structures and integrate multiple separation mechanisms to overcome problems such as low efficiency and poor effect in the gas-liquid separation process.

[0016] However, despite the advantages of different gas-liquid separation technologies applied in various industrial scenarios, numerous problems still exist in practical applications. On the one hand, to improve separation efficiency, gas-liquid separators employ complex internal separation structures to address the separation needs of gas at different stages. However, due to the varying requirements for flow channels, flow rates, and separation methods at each stage, achieving a high degree of integration of the separation structure is difficult, resulting in a large overall size and redundant structure, thus increasing manufacturing and assembly costs. Furthermore, some gas-liquid separators lack a reasonable layout for gas flow direction in their initial design, leading to problems such as large installation space requirements, high installation center, complex drainage structures, and inconvenient control in the gas delivery and / or separation channels. This also causes problems such as reduced separation efficiency, limited liquid storage capacity, and insufficient sealing performance, making it difficult to meet the actual operational requirements of the equipment.

[0017] In view of this, this application provides a gas-liquid separator, combined with Figures 1-9 The content shown provides a detailed description of the gas-liquid separator.

[0018] A gas-liquid separator includes a housing 1 and a cover 2 sealed to the housing 1. The housing 1 contains an air inlet chamber 11, an air inlet channel 12, a diffuser channel 13, a separation chamber 14, and a liquid collection chamber 15 arranged sequentially. The air inlet chamber 11 forms an air inlet 111 on the side of the housing 1, the separation chamber 14 forms an assembly port 141 on the top surface of the housing 1, and the bottom surface of the housing 1 has an outlet 151 communicating with the bottom of the liquid collection chamber 15. Along the height direction of the housing 1, the outlet end of the diffuser channel 13 is located below the inlet end of the air inlet channel 12, and the separation chamber 14 is located above the liquid collection chamber 15. The projected area of ​​the separation chamber 14 is larger than the projected area of ​​the liquid collection chamber 15, forming an annular stepped structure between them. The cover 2 includes a first flow joint 21 and a first end plate 22 connected together. The first end plate 22 is connected to the top of the housing 1. The first flow section 21 extends from the assembly port 141 into the separation chamber 14. An outlet air passage 211 communicating with the separation chamber 14 is provided in the first flow section 21. The inner sidewall of the outlet air passage 211 is coated with a composite hydrophobic coating. The outer sidewall of the first flow section 21 abuts against the inner sidewall of the separation chamber 14. Along the height direction of the housing 1, the outer sidewall of the first flow section 21 is provided with a sealing structure 222, a gas equalization groove 223, and multiple first inclined flow channels 224 with the same inclination direction. The sealing structure 222 and the gas equalization groove 223 are both around the first flow section 21. The gas equalization groove 223 is away from the first end plate 22 relative to the sealing structure 222 and is connected to the diffusion flow channel 13 and the first inclined flow channel 224 respectively. Multiple inclined flow channels are evenly arranged on the outer sidewall of the first flow section 21 and are connected to the separation chamber 14.

[0019] The gas-liquid separator provided in this application includes a housing 1 and a cover 2 sealed to the housing 1. The cover 2 integrates a separation structure for gas-liquid separation of water-containing compressed gas. Figures 1-3 , Figure 6 and Figure 8 As shown, the housing 1 is provided with an air inlet chamber 11, an air inlet channel 12, a diffusion channel 13, a separation chamber 14, and a liquid collection chamber 15 connected in sequence. Specifically, the air inlet chamber 11 can form an air inlet 111 on the outer wall of the housing 1 and serve as the inlet for water-containing compressed gas. The air supply device delivers compressed gas into the air inlet chamber 11 through the air inlet 111. The gas can be delivered to the separation chamber 14 in sequence through the interconnected air inlet channel 12 and diffusion channel 13. The diffusion channel 13 can diffuse the gas through its diffusion effect, so that the water-containing compressed gas entering the separation chamber 14 is evenly distributed, creating conditions for efficient gas-liquid separation. The separation chamber 14 can provide a space for the separation structure. After passing through the separation structure in the separation chamber 14, the water-containing compressed air can achieve gas-liquid separation and form a gas part and a liquid part. Along the height direction of the shell 1, the separation chamber 14 is located above the liquid collection chamber 15. Therefore, the gas portion with lower density after separation can be transported to the gas storage tank connected to the gas-water separator for storage and use through the gas outlet channel 211 and the transfer channel 231 provided in the cover body 2. The liquid portion with lower density can flow into the liquid collection chamber 15 below for collection along the inner side wall and the surface of the stepped structure of the separation chamber 14. The bottom surface of the shell 1 is provided with a liquid outlet 151 that communicates with the bottom of the liquid collection chamber 15. The liquid outlet 151 can be connected to the liquid storage tank used to collect liquid, so that the liquid collected in the liquid collection chamber 15 can be discharged in time, thereby realizing the gas-liquid separation of water-containing compressed gas.

[0020] Furthermore, since the shell 1 and the cover 2 are connected by a sealed connection, the separation structure of the gas-water separator can be integrated into the cover 2. This simplifies the structure of the shell 1, reduces the complexity and manufacturing difficulty of the internal cavities, and helps control production costs. Figure 2 and Figure 3 As shown, the separation cavity 14 can form an assembly port 141 on the top surface of the housing 1. During the assembly process of the housing 1 and the cover 2, the separation structure on the cover 2 can be directly installed into the separation cavity 14 through the assembly port 141. This not only simplifies the assembly process between the housing 1 and the cover 2 and reduces the assembly difficulty, but also facilitates the maintenance and replacement of the separation structure in the later stage.

[0021] For example, such as Figure 1 and Figure 2As shown, the area on the outer wall of the housing 1 where the air inlet 111 is located is provided with a mounting surface. The mounting surface may have multiple connection holes 251 around the air inlet 111, such as threaded connection holes 251. The connection holes 251 can be used to achieve a firm connection between the air inlet chamber 11 and the air supply equipment, which facilitates disassembly and installation between the two and ensures the stability and sealing of the entire gas-liquid separation system.

[0022] Furthermore, such as Figure 3 As shown, for the inlet channel 12 and the diffuser channel 13, the inlet channel 12 can extend along the height direction of the housing 1 inside the housing 1 and is simultaneously located beside the separation chamber 14 and the liquid collection chamber 15. This design enables effective utilization of the internal space of the housing 1 and helps control the overall volume of the housing 1. In addition, the inlet channel 12 and the diffuser channel 13 are interconnected, and along the height direction of the housing 1, the outlet end of the diffuser channel 13 is located below the inlet end of the inlet channel 12. This allows the water-containing compressed gas in the inlet chamber 11 to enter the separation chamber 14 from bottom to top, ensuring that the water-containing compressed gas fully fills the entire inlet channel 12 and the diffuser channel 13, guaranteeing gas delivery efficiency and subsequent gas-liquid separation efficiency, and improving the overall efficiency of the gas-liquid separator.

[0023] Furthermore, such as Figure 3 , Figure 6 and Figure 8 As shown, the separation chamber 14 is located above the liquid collection chamber 15, and the orthographic projection area of ​​the separation chamber 14 along the height direction of the shell 1 is larger than the orthographic projection area of ​​the liquid collection chamber 15, so that an annular stepped structure is formed between the two in the connecting area. Specifically, the formation of the stepped structure can increase the area of ​​the condensation region between the separated liquid portion and the inner wall of the separation chamber 14, and shorten the distance of the liquid portion falling, so that the separated liquid portion can quickly condense and converge into a water flow on the outer wall of the separation chamber 14 and the surface of the stepped structure, ensuring that the water flow can smoothly flow into the liquid collection chamber 15, and improving the collection efficiency of the separated liquid portion.

[0024] like Figure 1 , Figure 4 as well as Figure 8As shown, the cover 2, which is sealed to the housing 1, may include a first end plate 22. A first flow section 21 is fixedly connected to one side of the first end plate 22, providing a stable mounting position for the first flow section 21. During assembly, the first end plate 22 and the top surface of the housing 1 can be fixedly connected by fasteners, allowing the first flow section 21 to be smoothly inserted into the separation chamber 14 inside the housing 1 through the assembly port 141. In this way, the first end plate 22 can effectively seal the top surface of the housing 1 and the assembly port 141, and also ensure that the first flow section 21 forms a reliable separation structure inside the separation chamber 14, guaranteeing the sealing and functionality of the gas-water separator.

[0025] For example, the first end plate 22 can be a flange plate, and both the first end plate 22 and the top surface of the housing 1 are provided with connection holes 251. In this way, fasteners such as bolts and connection holes 251 can be used to achieve a quick connection between the housing 1 and the cover 2, which not only facilitates the assembly and disassembly of the two and improves the assembly efficiency of the gas-water separator, but also facilitates subsequent maintenance and repair. In addition, by using the first end plate 22 to enclose the top surface of the housing 1, the connection area between the housing 1 and the cover 2 can be controlled, which helps to enhance the sealing performance of the gas-water separator and ensure the stability and reliability of the equipment operation.

[0026] Furthermore, regarding the first flow segment 21 of the cover 2, as... Figures 4-8 As shown, the first flow section 21 extends from the assembly port 141 into the separation chamber 14, and the first flow section 21 is provided with an outlet gas channel 211 that communicates with the separation chamber 14. In this way, the gas portion that is separated in the separation chamber 14 can enter the outlet gas channel 211 from bottom to top for gas transport. In addition, the inner wall of the outlet gas channel 211 is uniformly coated with a composite hydrophobic coating, which can reduce the degree of adhesion on the inner wall of the outlet gas channel 211, reduce moisture residue, ensure the dryness of the separated gas, and improve the gas-liquid separation effect.

[0027] Furthermore, such as Figures 4-8As shown, the outer wall of the first flow section 21 abuts against the inner wall of the separation chamber 14. Along the height direction of the housing 1, the outer wall of the first flow section 21 is sequentially provided with a sealing structure 222, an air distribution groove 223, and multiple first inclined flow channels 224 with the same inclination direction. The sealing structure 222 surrounds the first flow section 21, which can increase and ensure the sealing between the first flow section 21 and the separation chamber 14, and between the first end cap and the top surface of the housing 1. The air distribution groove 223 is located on the side of the sealing structure 222 away from the first end plate 22, which can ensure the air distribution groove... The airtightness of 223 allows the water-containing compressed gas to flow in a directional manner. The gas equalization groove 223 can be set in an annular shape and opened along the circumference of the first flow joint 21. The gas equalization groove 223 is connected to the diffusion channel 13 and the first inclined channel 224 respectively. In this way, after the water-containing compressed gas enters the gas equalization groove 223 through the diffusion channel 13, the gas equalization groove 223 can make the water-containing compressed gas inside it evenly distributed, and can regulate and buffer the water-containing compressed gas, thereby ensuring that the water-containing compressed gas can fully enter each of the first inclined channels 224.

[0028] Furthermore, multiple first inclined flow channels 224 are evenly arranged on the outer wall of the first flow joint 21 and connected to the separation chamber 14. Therefore, the multiple first inclined flow channels 224 can serve as the separation structure of the gas-liquid separator. After the water-containing compressed gas flows out through the first inclined flow channels 224, it forms a high-speed rotating vortex airflow under high pressure. The centrifugal force generated by the vortex airflow is used to achieve gas-liquid separation. The denser liquid portion can be thrown towards the inner wall of the separation chamber 14 and the surface of the stepped structure, and then condense and flow into the liquid collection chamber 15 along the inner wall of the separation chamber 14 and the surface of the stepped structure. The less dense gas portion tends to converge towards the central axis of rotation of the vortex airflow and concentrate in the central region of the separation chamber 14, so that the gas portion can be discharged upward through the outlet airflow channel 211, thereby completing the gas-liquid separation process of the water-containing compressed gas.

[0029] For example, on the outer wall of the first flow section 21, an inclined tooth-like or blade-like structure is formed between two adjacent first inclined flow channels 224. The side of the tooth-like or blade-like structure away from the outlet flow channel 211 abuts tightly against the inner wall of the separation chamber 14, which can enhance the assembly stability of the first flow section 21 within the separation chamber 14. At the same time, the inclined tooth-like or blade-like structure can make adjacent first inclined flow channels 224 independent of each other, giving each first inclined flow channel 224 a spiral guiding characteristic, which is beneficial to improving the separation effect and efficiency of the gas-liquid separator for water-containing compressed gas, thereby achieving more efficient gas-liquid separation.

[0030] For example, along the height direction of the housing 1, the length of the first inclined flow channel 224 can be controlled within the range of 40 mm to 45 mm. This ensures that the water-containing compressed gas forms a vortex airflow with sufficient centrifugal force under high pressure through the first inclined flow channel 224, effectively achieving the separation between gas and water. It also avoids the first inclined flow channel 224 being too long, which would increase the space occupied by the first flow joint 21, thus balancing the separation performance and structural compactness of the gas-water separator.

[0031] In some embodiments, the stepped structure has an inclined surface 16 that is inclined toward the first flow section 21, and there is a gap between the inclined surface 16 and the outlet end of the first inclined flow channel 224; the connection area between the inclined surface 16 and the inner wall of the separation chamber 14, and the connection area between the inclined surface 16 and the inner wall of the liquid collection chamber 15 are arc transitions.

[0032] To improve the condensation rate of the liquid portion after separation of water-containing compressed gas and achieve efficient water collection, such as Figure 3 , Figure 6 and Figure 8 As shown, an inclined surface 16 inclined towards the first flow section 21 can be provided on the surface of the stepped structure. Specifically, the inclined surface 16 can be arranged opposite to the outlet end of the first inclined flow channel 224, and there is an appropriate distance between them, such as 10mm-20mm. In this way, during the centrifugal dehydration of water-containing compressed gas using vortex airflow, the added inclined surface 16 not only expands the condensation area in the separation chamber 14, but also effectively shortens the falling distance of the liquid part after it is thrown out, so that the liquid part can quickly condense on the outer wall of the separation chamber 14 and the surface of the stepped structure, and converge into a water flow into the liquid collection chamber 15, thereby improving the liquid collection efficiency.

[0033] Furthermore, by aligning the inclined surface 16 toward the first flow section 21, the condensed liquid droplets on the surface of the inclined surface 16 can slide down into the liquid collection chamber 15 under the action of gravity, preventing accumulation on the surface of the inclined surface 16.

[0034] For example, the inclined surface 16 is used to guide the separated liquid from the separation chamber 14 to the collection chamber 15. Its surface may be coated with a hydrophobic coating or polished to reduce liquid residue and improve cleanliness and drainage performance.

[0035] Furthermore, the liquid droplets formed on the inclined surface 16 after centrifugation have adhesive force. The connection area between the inclined surface 16 and the inner wall of the separation chamber 14, as well as the connection area between the inclined surface 16 and the inner wall of the collection chamber 15, are both set as arc transitions to form arc transition areas. This can reduce the obstruction effect of the connection area on the liquid droplets, so that the liquid droplets can flow smoothly into the collection chamber 15 for collection.

[0036] It should be noted that the curvature of the connection area between the inclined surface 16 and the inner wall of the separation chamber 14, as well as the curvature of the connection area between the inclined surface 16 and the inner wall of the liquid collection chamber 15, can be adjusted according to actual needs, and will not be elaborated here.

[0037] In some embodiments, the air intake channel 12 extends along the height direction of the housing 1 and forms an inspection port 121 on the top surface of the housing 1; the outlet end of the diffusion channel 13 is elongated, and along the length direction of the outlet end of the diffusion channel 13, the length of the outlet end of the diffusion channel 13 is greater than or equal to the diameter of the uniform air groove 223, wherein the length direction of the outlet end of the diffusion channel 13 is perpendicular to the height direction of the housing 1.

[0038] In the gas-liquid separator, the inlet channel 12 and the diffuser channel 13 are used to transport compressed gas containing water. However, long-term use of the gas-liquid separator may cause blockage or damage to the inner wall of the inlet channel 12, thus requiring regular cleaning and maintenance. To ensure the unobstructed flow of air, such as... Figure 2 , Figure 3 , Figure 6 and Figure 8 As shown, the air inlet channel 12 extends along the height direction of the housing 1, and an inspection port 121 is opened on the top surface of the housing 1; therefore, when the gas-water separator is operating normally, the inspection port 121 can be sealed and covered by the first end plate 22 of the cover body 2; while during maintenance, cleaning tools can be inserted into the air inlet channel 12 for maintenance to ensure the smoothness and efficiency of the water-containing compressed gas during the transportation process.

[0039] Furthermore, the outlet end of the diffusion channel 13 can be elongated, and the outlet end of the diffusion channel 13 can extend radially along the gas equalization groove 223. Along the length direction of the outlet end of the diffusion channel 13, by making the length of the outlet end of the diffusion channel 13 greater than or equal to the diameter of the gas equalization groove 223, it is ensured that the water-containing compressed gas has good diffusion performance at the outlet, so that it can quickly and uniformly fill the gas equalization groove 223, and timely replenish the water-containing compressed gas to the multiple first inclined channels 224, thereby ensuring the continuity and efficiency of the gas-liquid separation process.

[0040] Preferably, the length of the outlet end of the diffusion channel 13 can be set to be equal to the diameter of the gas equalization groove 223, so as to achieve the best balance between structural compactness and gas distribution uniformity.

[0041] In addition to being elongated, the diffuser channel 13 can also be rectangular or elliptical, which will not be elaborated here.

[0042] In some embodiments, the sealing structure 222 includes a sealing ring 2221 and a sealing gasket 2222; an annular sealing groove is formed on the outer side wall of the first flow section 21 along its circumference, the sealing groove is close to the first end plate 22 relative to the gas equalization groove 223, the sealing ring 2221 is provided in the sealing groove, and the sealing ring 2221 is compressed between the sealing groove and the inner side wall of the separation chamber 14; the sealing gasket 2222 is compressed between the top surface of the housing 1 and the first end plate 22 to seal the housing 1 and the first end plate 22.

[0043] To ensure the airtightness of the gas-water separator, a sealing structure 222 can be provided on the first flow section 21, surrounding its outer wall, to seal the connection area between the housing 1 and the cover 2. Figure 4 , Figure 6 and Figure 8 As shown, an annular sealing groove is formed circumferentially on the outer wall of the first flow section 21. The sealing groove is located on the side near the first end plate 22 and is close to the first end plate 22 relative to the air distribution groove 223, and can be non-communicating with it. A sealing ring 2221 is installed in the sealing groove. The sealing groove limits the sealing ring 2221, preventing it from being misaligned or falling off during assembly, thus ensuring the sealing of the connection area. In addition, the sealing ring 2221 is compressed between the sealing groove and the inner wall of the separation chamber 14. The elasticity of the sealing ring 2221 can enhance the sealing effect between the first flow section 21 and the inner wall of the separation chamber 14.

[0044] Furthermore, such as Figure 4 , Figure 6 and Figure 8 As shown, the sealing gasket 2222 in the sealing structure 222 can be arranged around the first flow joint 21 and compressed between the top surface of the housing 1 and the first end plate 22. The compressed sealing gasket 2222 can effectively seal the first end plate 22 and the top surface of the housing 1, ensuring the airtightness between them. At the same time, the sealing gasket 2222 can also block the inspection hole, allowing the water-containing compressed gas to be directionally transmitted in the outlet flow channel 211, preventing leakage.

[0045] It should be noted that the cross-sectional dimensions of the sealing ring 2221 can be selected according to actual sealing requirements. For example, a larger cross-sectional dimension can be used in high-pressure environments to increase sealing strength, while a smaller cross-sectional dimension can be used in low-pressure environments to save material. In addition, the interface shape of the sealing ring 2221 can also be selected as circular or other shapes according to requirements.

[0046] For example, the sealing gasket 2222 can be made of high-temperature and corrosion-resistant materials, such as fluororubber or silicone rubber, to adapt to different working conditions. This not only improves the sealing performance of the gas-water separator but also meets the usage requirements under various operating conditions.

[0047] In some embodiments, the composite hydrophobic coating includes a fluoropolymer matrix and hydrophobically modified nanoparticles; the static water contact angle of the composite hydrophobic coating ranges from 150° to 150°, and the roll-off angle ranges from 0.5° to 10°.

[0048] To prevent liquid droplets from adhering to the inner wall of the outlet gas channel 211 and affecting the dryness of the separated gas portion, a hydrophobic coating can be uniformly applied to the inner wall of the outlet gas channel 211. This reduces the adhesion of liquid droplets to the inner wall of the outlet gas channel 211 and improves the gas-liquid separation effect. The hydrophobic coating may include a composite hydrophobic coating consisting of a fluoropolymer matrix and hydrophobically modified nanoparticles.

[0049] The composite hydrophobic coating is formed by mixing the following components in weight percentages. Specifically, the fluoropolymer matrix may contain fluorinated ethylene propylene copolymer (FEP) or polytetrafluoroethylene (PTFE) emulsion, with a weight percentage of 85%-97%; the hydrophobically modified nanoparticles may contain hydrophobically modified nano-silica (nano-SiO2) particles, with a weight percentage of 1%-10%; and may also include auxiliary agents (such as dispersants or leveling agents), with a weight percentage of 2%-5%. More specifically, the particle size of the hydrophobically modified nano-silica particles is preferably 10nm-50nm, and their surface may be treated with silane coupling agents such as hexamethyldisilazane to enhance their dispersibility and hydrophobic properties in the fluoropolymer matrix.

[0050] After uniformly mixing the components according to the above weight percentages, the mixture can be applied to the inner wall surface of the air outlet channel 211 by spraying or dipping. Subsequently, it is cured at a specific temperature to form a composite coating with a thickness of 10μm-30μm on the inner wall of the air outlet channel 211, i.e., a composite hydrophobic coating. The composite coating forms a micro-nano composite rough structure composed of nano-silica particles, which effectively traps air, creating a stable air cushion between the droplet and the composite coating surface, thereby significantly reducing the contact area and adhesion between the droplet and the solid surface. The static water contact angle of the composite coating surface formed based on the above components and process can reach 150°-160°, and the roll-off angle can reach 0.5°-10°, achieving a superhydrophobic effect for the composite hydrophobic coating.

[0051] For example, the static water contact angle of the composite coating surface is 155° and the roll-off angle is 5°. At this time, the hydrophobicity of the composite coating surface is relatively good, the preparation difficulty of the composite coating is relatively low, and the surface parameter yield is relatively high.

[0052] For example, the performance of the composite hydrophobic coating can be verified through comparative experiments. Specifically, the inner wall surfaces of three identical first flow joints 21 can be treated to form three hydrophobic schemes. In Scheme 1, the inner wall surface of the first flow joint 21 is left untreated, exposing the material (e.g., stainless steel) surface of the first flow joint 21. In Scheme 2, a conventional hydrophobic coating (e.g., PTFE coating) can be applied to the inner wall surface of the first flow joint 21. In Scheme 3, the aforementioned composite hydrophobic coating can be applied to the inner wall surface of the first flow joint 21. The comparative experiments yielded the test results shown in Table 1.

[0053] Table 1

[0054] As shown in Table 1, compared to Schemes 1 and 2, Scheme 3 utilizes a composite hydrophobic coating. The gas-liquid separator with this coating significantly improves gas-liquid separation efficiency without altering the main structure, increasing size, or adding extra pressure loss. In particular, it drastically reduces the residual water content in the separated gas. Therefore, it can be demonstrated that the application of a composite hydrophobic coating effectively prevents the adhesion and secondary entrainment of separated droplets, thereby further ensuring the gas-liquid separation effect without increasing the size of the gas-liquid separator.

[0055] In some embodiments, the inner sidewall of the first flow section 21 is provided with a plurality of isolation portions 225 with the same inclination direction along its circumference, and a second inclined flow channel 2251 is formed between two adjacent isolation portions 225. The inclination direction of the second inclined flow channel 2251 is opposite to the inclination direction of the first inclined flow channel 224.

[0056] To avoid secondary liquid entrainment in the gas fraction after initial separation, the separated gas fraction can be further processed to reduce its residual rotational kinetic energy. Specifically, for example... Figure 7 and Figure 8As shown, by providing multiple isolation sections 225 with the same inclination direction along the circumferential direction on the inner sidewall of the first flow section 21, a second inclined flow channel 2251 can be formed between two adjacent isolation sections 225. Furthermore, by setting the inclination direction of the multiple isolation sections 225 to be opposite to the inclination direction of the first inclined flow channel 224, the inclination direction of the second inclined flow channel 2251 is opposite to that of the first inclined flow channel 224. In addition, since the second inclined flow channel 2251 has a reverse spiral guiding characteristic, when the separated gas portion passes through the second inclined flow channel 2251, the cyclone of the airflow can be weakened or eliminated, causing the airflow to tend to flow straight. This not only reduces the flow resistance of the gas portion and improves the gas output efficiency, but also makes it easier for the tiny droplets entrained in the airflow to condense and settle due to the loss of rotational centrifugal force, thereby further increasing the separation efficiency and separation effect of the water-containing compressed gas.

[0057] For example, the isolation section 225 can be integrally injection molded or machined from corrosion-resistant engineering plastics or metal materials and fixed to the inner wall of the gas flow path by means of inlay or other methods. This design can ensure the stability and durability of the structure, and effectively improve the overall performance and separation effect of the gas-water separator.

[0058] In addition, such as Figure 9 As shown, in order to improve the performance of the second oblique flow channel 2251 in eliminating the swirl direction of the rotating airflow, multiple isolation sections 225 can form a hollow channel in the central region of the outlet airflow channel 211. A column structure 301 is provided in the hollow channel. In this way, the outer wall of the column structure 301 can abut against the side of each isolation section 225 near its central region, thereby ensuring that adjacent second oblique flow channels 2251 are independent of each other and do not interfere with each other, so as to ensure the effect of the second oblique flow channel 2251 in eliminating the swirl direction of the airflow.

[0059] Furthermore, the bottom surface of the column structure 301 is provided with a first guide structure 302. The first guide structure 302 can be an inverted cone with a first guide surface on its surface. Before the gas enters the second inclined flow channel 2251, the first guide structure 302 can distribute and rectify the airflow that is about to enter the second inclined flow channel 2251, so that the airflow can enter each second inclined flow channel 2251 evenly along the first guide surface, so as to fully weaken the rotational kinetic energy of the airflow and improve the elimination effect on the cyclone. At the same time, liquid droplets or water flowing on the surface of the first guide structure 302 can converge along the first guide surface, and drip from the top under the action of gravity and flow into the liquid collection chamber 15, realizing the effective collection of liquid.

[0060] Furthermore, the top of the column structure 301 is provided with a second flow guiding structure 303. This structure can be an upright cone or a frustum, and its surface is provided with a first flow guiding surface. When the gas is discharged through the second inclined flow channel 2251, the second flow guiding structure 303 can further homogenize and guide the airflow, making the gas flow more stable, thereby improving the smoothness of gas delivery and the overall separation efficiency.

[0061] In some embodiments, the cover 2 further includes a second flow section 23 and a second end plate 24 connected to each other. The second flow section 23 is connected to the top surface of the first end plate 22 and is formed of a flexible material. The second flow section 23 is provided with a transition channel 231, which is located above the outlet channel 211 and is interconnected with it. The top surface of the second end plate 24 is provided with a flange surface 241.

[0062] Specifically, to further process the separated gas portion and improve the dryness of the output gas portion, the flow path of the airflow within the cover 2 can be extended. For example... Figure 1 and Figures 4-8 As shown, the cover 2 also includes a second flow section 23 and a second end plate 24 connected to each other. One end of the second flow section 23 is connected to the side of the first end plate 22 away from the first flow section 21. The central axes of the first flow section 21 and the second flow section 23 coincide, so that the outlet flow channel 211 of the first flow section 21 is connected to the conversion flow channel in the second flow section 23. In this way, the gas portion processed by the second oblique flow channel 2251 can be sequentially output to the outside of the gas-water separator through the outlet flow channel 211 and the conversion flow channel.

[0063] To further improve the flexibility of the gas-liquid separator, the second flow section 23 can be made of a flexible material, such as silicone or rubber. The flexible material used in the second flow section 23 can absorb vibration, thereby reducing noise during the gas-liquid separation process. It should be noted that the length of the second flow section 23 can be adjusted according to the actual installation space; for example, a shorter length can be chosen in a narrow space, and a longer length in a spacious space.

[0064] Furthermore, to enhance the compatibility between the gas-liquid separator and other equipment, the second end plate 24 can be a flange plate. The top surface of the second end plate 24 has a flange face 241, and the flange face 241 has a connection hole 251. Using fasteners such as bolts and the connection hole 251 can simplify the connection process between the gas-liquid separator and other equipment, reduce the difficulty of disassembly and assembly, and help improve the overall installation and maintenance efficiency of the equipment.

[0065] In some embodiments, the inner sidewall of the transfer channel 231 is provided with a water removal structure 232 along its circumference, the water removal structure 232 including at least one of a metal wire mesh, a wire mesh demister and a coalescing filter.

[0066] To achieve further processing of the separated gas fraction, such as... Figure 8 As shown, when the housing 1 includes the second flow section 23 and the second end plate 24, a water removal structure 232 can be provided circumferentially on the inner sidewall of the transition channel 231 to remove residual moisture in the gas discharged from the second inclined channel 2251, thereby improving the gas drying degree and separation effect. The water removal structure 232 may include at least one of a metal wire mesh (formed from physically stable stainless steel), a wire mesh demister (formed from polymer fiber material), and a coalescing filter.

[0067] Taking a metal wire mesh as an example, when the metal wire mesh is placed on the inner wall of the transition channel in the second flow section, the metal wire mesh can provide a relatively large specific surface area through its complex and interwoven mesh structure. When the gas portion after being reversed and regulated by the second inclined flow channel 2251 passes through the metal wire mesh, the fine mist-like droplets remaining in the gas portion are intercepted on the surface of the metal wire mesh due to inertial collisions, and gradually agglomerate and converge into larger droplets. Under the action of gravity, they drip down and finally flow into the liquid collection chamber 15 along the inner wall of the first flow section 21 and the second flow section 23, thereby improving the separation performance of water-containing compressed gas.

[0068] Furthermore, when the second end plate 24 is connected to other equipment via bolts or other fasteners, liquid entrained in the discharged gas may cause corrosion damage to the end face of the second end plate 24. By providing a water removal structure 232 within the second flow section 23, repeated water removal treatment can be performed before the gas is output, further reducing the moisture content in the gas. In addition, by placing the water removal structure 232 on the inner wall of the second flow section 23, the arrangement area of ​​the water removal structure 232 can be controlled while ensuring its water removal performance, reducing water removal costs and shortening the size of the second flow section 23. This also helps prevent corrosion damage to the second end plate 24 during long-term use, extending the service life of the equipment.

[0069] In some embodiments, the outlet end of the liquid collecting chamber 15 is connected to a liquid reservoir through a drain pipe 17, and a shut-off switch is provided on the drain pipe 17 to control the on / off state of the drain pipe 17.

[0070] For example, to achieve timely discharge of the liquid collected in the collection chamber 15, such as Figure 1 , Figure 6 and Figure 8 As shown, the outlet end of the liquid collection chamber 15 can be connected to a liquid storage tank through the drain pipe 17, so that the liquid flows into the liquid storage tank through the outlet end and the drain pipe 17 for auxiliary collection. This not only allows for centralized management of the collected liquid, but also appropriately reduces the volume of the liquid collection chamber 15, which is beneficial for miniaturizing the gas-liquid separator.

[0071] It should be noted that the diameter of the drain pipe 17 can be flexibly selected according to the application scenario of the equipment and the discharge flow rate requirements of the liquid part; for example, a larger diameter can be selected in industrial scenarios to meet the high flow rate discharge requirements, while a smaller diameter can be selected in portable equipment to save space; in addition, the pipe material can be corrosion-resistant stainless steel or engineering plastics to adapt to the requirements of different working environments.

[0072] Furthermore, the drain pipe 17 is equipped with a shut-off switch for controlling its on / off state; when it is necessary to drain the liquid collection chamber 15, the shut-off switch is opened and the liquid part enters the liquid storage tank through the drain pipe 17; when it is not necessary to drain, the shut-off switch is closed to maintain the airtightness of the gas-liquid separator and ensure the normal separation performance of the gas-liquid separator.

[0073] For example, the shut-off switch can employ a timed solenoid valve or an automatic drainage float structure. When a timed solenoid valve is used, the liquid in the collection chamber 15 can be automatically discharged according to a preset time cycle. When an automatic drainage structure is used, the drainage float in the automatic drainage structure needs to be placed inside the collection chamber 15. Automatic control is achieved through changes in liquid level. The drainage float can be made of stainless steel or a polymer buoyancy material and is linked to the drainage valve through a lever mechanism in the automatic drainage structure. If the liquid level in the collection chamber 15 rises to a preset height, the drainage float rises under buoyancy, causing the lever mechanism to open the drainage valve and discharge the accumulated liquid. If the liquid level drops, the drainage float falls back down, causing the lever mechanism to reset and close the drainage valve to prevent gas leakage. Therefore, by combining the above-mentioned shut-off switch, unattended automated drainage can be achieved, improving the convenience and reliability of equipment operation.

[0074] In some embodiments, the sidewalls of the housing 1 are respectively provided with a first detection interface 18 and a second detection interface 19. The first detection interface 18 is connected to the air inlet chamber 11, and the second detection interface 19 is connected to the liquid collection chamber 15.

[0075] To improve the functionality of the gas-liquid separator and enable the detection of its internal gas and liquid components, such as... Figures 1 to 3 , Figure 6 and Figure 8 As shown, the first detection interface 18 and the second detection interface 19 opened on the side wall of the housing 1 can be used to install auxiliary accessories. Among them, the first detection interface 18 is connected to the air intake chamber 11, and integrated accessories can be installed through the first detection interface 18 to detect the gas condition in the air intake chamber 11, such as installing safety valves or instruments to monitor the pressure or other parameters of the water-containing compressed gas in the air intake chamber 11.

[0076] Similarly, the second detection interface 19 is connected to the liquid collection chamber 15. Accessories for monitoring the liquid level in the liquid collection chamber 15, such as a liquid level detection device or an alarm device, can be installed through the second detection interface 19 to promptly monitor the liquid accumulation in the liquid collection chamber 15 and take appropriate measures. By adding the first detection interface 18 and the second detection interface 19 to the housing 1, not only is the functionality and integration of the gas-liquid separator enhanced, but accurate detection of the internal chamber status is also achieved, allowing for real-time understanding of the actual working condition of the gas-liquid separator and ensuring its stable operation.

[0077] In conjunction with the above embodiments, the gas-liquid separator provided in this application has at least one of the following beneficial effects; specifically, it is reflected in the following aspects: Firstly, the water-containing compressed gas enters the inlet chamber 11 from the inlet 111 at the bottom of the gas-liquid separator, passes through the inlet channel 12 and the diffuser channel 13 in sequence, and enters the annular gas equalization groove 223 located on the outer wall of the first flow section 21. The water-containing compressed gas is evenly distributed into multiple first inclined channels 224 in the gas equalization groove 223 to form a rotating airflow in the first inclined channels 224, thereby achieving effective separation of gas and liquid. The separated gas portion is released from the outlet end at the top of the shell 1 through the outlet channel 211 inside the first flow section 21, while the liquid portion flows into the liquid collection chamber 15 and is discharged through the liquid outlet 151 at its bottom. In this way, the gas equalization groove 223 and the first inclined channels 224 can be integrated into the cover 2, and different gas channels and chambers can be integrated into the shell 1. This not only ensures the gas-liquid separation efficiency, but also improves the integration of the gas-liquid separator and reduces its overall size, thus facilitating miniaturization design.

[0078] Secondly, by setting an annular gas equalization groove 223 on the outer wall of the first flow section 21 and connecting the gas equalization groove 223 to each first inclined flow channel 224, the water-containing compressed gas from the diffusion channel 13 can be buffered and regulated, ensuring that the gas is uniformly guided into the first inclined flow channel 224, thereby enhancing the stability of the subsequently formed rotating airflow and the gas-liquid separation effect.

[0079] Third, multiple first inclined flow channels 224 are evenly distributed along the circumference of the outer wall of the first flow section 21 and are inclined in the same direction, which can guide the airflow to generate a strong and stable centrifugal force, enhance the effect of throwing out droplets, and thus improve the gas-liquid separation efficiency.

[0080] Fourth, coating the inner wall of the outlet gas channel 211 with a composite hydrophobic coating can prevent droplets from adhering to the inner wall of the outlet gas channel, reduce the probability of gas entrainment of droplets after separation, and further improve the gas-liquid separation efficiency of the gas-liquid separator without changing the main structure of the gas-liquid separator, without increasing the external size and without increasing additional pressure loss, so that the gas-liquid separator can achieve efficient separation and compact design.

[0081] Fifth, by setting a liquid outlet 151 at the bottom of the housing 1, it is easy to connect to drainage equipment such as drainage pipes, thereby improving the liquid storage capacity of the gas-liquid separator. At the same time, timely discharge of liquid can appropriately reduce the size of the liquid collection chamber 15, which helps to realize the miniaturization design of the gas-liquid separator without affecting its ability to process water-containing compressed gas.

[0082] Sixth, when gas-liquid separators are applied to gas-liquid separation systems, they can enable the gas-liquid separation systems to have efficient, compact, and reliable gas-liquid separation capabilities, thereby improving the overall performance and operating efficiency of the system.

[0083] It should be noted that although this application describes the process of compressed gas containing water in detail, the gas-water separator is also applicable to the separation of other compressed gases containing liquids, and the basic separation principle is the same, so it will not be described again here.

[0084] Based on the same inventive concept, this application also provides a gas-liquid separation system; specifically, the gas-liquid separation system includes the gas-water separator as described in any of the embodiments above, and therefore possesses all the advantages and beneficial effects of the gas-water separator. Exemplarily, the gas-liquid separation system including the gas-water separator can be one of an air compressor, refrigeration equipment, steam system, wastewater treatment device, or industrial gas processing equipment, capable of separating liquid water or condensate entrained in the gas, which will not be elaborated further here.

[0085] It should be noted that some embodiments of this application have been described above. Other embodiments are within the scope of the appended claims.

[0086] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0087] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0088] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0089] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0090] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A water-air separator, characterized in that, The shell and the cover body are in sealed connection; The shell is provided with an air inlet cavity, an air inlet channel, a diffusion channel, a separation cavity and a liquid collecting cavity in sequence; the air inlet cavity forms an air inlet on the side of the shell; the separation cavity forms an assembly opening on the top surface of the shell; the bottom surface of the shell is provided with a liquid outlet opening in communication with the bottom of the liquid collecting cavity; along the height direction of the shell, the outlet end of the diffusion channel is located below the inlet end of the air inlet channel; the separation cavity is located above the liquid collecting cavity; the projection area of the separation cavity is larger than that of the liquid collecting cavity, so as to form a ring-shaped stepped structure therebetween; The cover body comprises a first flow passage section and a first end plate connected with each other; the first end plate is fixedly connected with the top surface of the shell; the first flow passage section extends into the separation cavity from the assembly opening; the first flow passage section is provided with an air outlet channel in communication with the separation cavity; the inner side wall of the air outlet channel is coated with a composite hydrophobic coating; the outer side wall of the first flow passage section abuts against the inner side wall of the separation cavity; along the height direction of the shell, the outer side wall of the first flow passage section is provided with a sealing structure, a uniform air groove and a plurality of first inclined flow channels with the same inclined direction in sequence; the sealing structure and the uniform air groove surround the first flow passage section; the uniform air groove is away from the first end plate and is in communication with the diffusion channel and the first inclined flow channels respectively; the plurality of first inclined flow channels are uniformly arranged on the outer side wall of the first flow passage section and are in communication with the separation cavity.

2. The gas-water separator of claim 1, wherein, The stepped structure is provided with an inclined surface inclined towards the first flow passage section; there is a spacing between the inclined surface and the outlet end of the first inclined flow channel; The connection areas between the inclined surface and the inner side wall of the separation cavity and between the inclined surface and the inner side wall of the liquid collecting cavity are circularly arc-shaped.

3. The gas-water separator of claim 1, wherein, The air inlet channel extends along the height direction of the shell and forms an inspection opening on the top surface of the shell; The outlet end of the diffusion channel is in a strip shape; along the length direction of the outlet end of the diffusion channel, the length of the outlet end of the diffusion channel is greater than or equal to the diameter of the uniform air groove; the length direction of the outlet end of the diffusion channel is perpendicular to the height direction of the shell.

4. The gas-water separator of claim 1, wherein, The sealing structure comprises a sealing ring and a sealing gasket; The outer side wall of the first flow passage section is provided with a ring-shaped sealing groove along the circumferential direction thereof; the sealing groove is close to the first end plate relative to the uniform air groove; the sealing ring is arranged in the sealing groove; the sealing ring is arranged in compression between the sealing groove and the inner side wall of the separation cavity; The sealing gasket is arranged in compression between the top surface of the shell and the first end plate, so as to seal the shell and the first end plate.

5. The gas-water separator of claim 1, wherein, The composite hydrophobic coating comprises a fluoropolymer matrix and hydrophobically modified nanoparticles; The static water contact angle of the composite hydrophobic coating ranges from 150° to 160°; the rolling angle ranges from 0.5° to 10°.

6. The gas-water separator of claim 1, wherein, The inner side wall of the first flow-through node is provided with a plurality of isolation portions with the same inclination direction along the circumference thereof, and a second inclined flow channel is formed between two adjacent isolation portions, and the inclination direction of the second inclined flow channel is opposite to that of the first inclined flow channel.

7. The gas-water separator of claim 1, wherein, The cover further comprises a second flow-through node and a second end plate connected to each other, the second flow-through node is connected to the top surface of the first end plate, and the second flow-through node is formed of a flexible material. An adapter flow channel is arranged in the second flow-through node, and the adapter flow channel is located above the air outlet flow channel and communicates with the air outlet flow channel. The top surface of the second end plate is provided with a flange surface.

8. The gas-water separator of claim 7, wherein, The inner side wall of the adapter flow channel is provided with a water removal structure along the circumference thereof, and the water removal structure comprises at least one of a metal wire mesh, a wire mesh demister and a coalescence filter.

9. The gas-water separator of claim 1, wherein, The outlet end of the liquid collecting cavity is connected to a liquid reservoir through a liquid discharge pipeline, and a stop switch is arranged on the liquid discharge pipeline to control the on-off state of the liquid discharge pipeline.

10. The gas-water separator of claim 1, wherein, The side wall of the shell is respectively provided with a first detection interface and a second detection interface, the first detection interface communicates with the air inlet cavity, and the second detection interface communicates with the liquid collecting cavity.

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