Gas-liquid separation device and system

Abstract

The application relates to a gas-liquid separation device and system, and the disclosed gas-liquid separation device comprises a device shell (10), a first filter screen structure (20) and a second filter screen structure (30), wherein the device shell (10) is provided with an inner shell space (110) and an exhaust hole (120) in communication with the inner shell space (110), the first filter screen structure (20) and the second filter screen structure (30) are arranged in the inner shell space (110), the second filter screen structure (30) is located between the first filter screen structure (20) and the exhaust hole (120), and the filter screen hole size of the first filter screen structure (20) is larger than that of the second filter screen structure (30). The above scheme can solve the problem of poor separation effect of the gas-liquid separation device in the related art.

Description

Technical Field

[0001] This invention relates to the field of gas-liquid separation technology in the high-end equipment manufacturing industry, and particularly to a gas-liquid separation device and system. Background Technology

[0002] In chemical, petroleum refining, pharmaceutical, and food processing industries, processes such as evaporation, distillation, flash evaporation, and reaction separation inevitably generate gas-liquid mixtures. Therefore, gas-liquid separation processes have emerged. The task of gas-liquid separation is to separate the liquid from the gas-liquid mixture, thereby ensuring the purity of the gas in subsequent processes, preventing liquid from causing noise damage to equipment, and ultimately guaranteeing production safety and product quality. Gas-liquid separation is achieved using gas-liquid separation devices.

[0003] However, traditional gas-liquid separators rely on gravity settling or centrifugal force for initial separation. These traditional separators suffer from poor separation efficiency, failing to meet the high energy and separation efficiency requirements of modern industry. In particular, when handling small droplets or high-velocity gas-liquid mixtures, severe liquid entrainment often occurs, leading to incomplete gas-liquid separation. Summary of the Invention

[0004] This invention provides a gas-liquid separation device and system to solve the problem of poor separation effect in related gas-liquid separation devices.

[0005] In a first aspect, embodiments of the present invention disclose a gas-liquid separation device. The disclosed gas-liquid separation device includes a device shell, a first filter structure, and a second filter structure. The device shell is provided with an inner space and an exhaust port communicating with the inner space. The first filter structure and the second filter structure are both disposed in the inner space. The second filter structure is located between the first filter structure and the exhaust port. The filter pore size of the first filter structure is larger than the filter pore size of the second filter structure.

[0006] Optionally, in the above-mentioned gas-liquid separation device, the gas-liquid separation device further includes a support component disposed in the inner space of the shell, the first filter structure is a cover-shaped structure and is disposed between the second filter structure and the support component; the first filter structure has an inner space and a cover opening communicating with the inner space, the edge region of the first filter structure surrounding the cover opening is supported on the support component, the support component covers the cover opening, the support component has a plurality of drain holes and a gas-liquid mixture inlet hole communicating with the cover opening, the plurality of drain holes are spaced apart along the edge region and are covered by the edge region.

[0007] Optionally, in the above-mentioned gas-liquid separation device, the first filter structure includes a cylindrical filter body and a cover. The bottom port of the cylindrical filter body is the cover opening. The cover is located at the top port of the cylindrical filter body and covers the top port. The filter mesh holes of the cylindrical filter body communicate with the space inside the cover and the space outside the first filter structure. The gas-liquid mixture inlet faces the cover.

[0008] Optionally, in the above-mentioned gas-liquid separation device, the gas-liquid separation device further includes a mixture input pipe, the first end of the mixture input pipe is connected to the gas-liquid mixture input hole, the mixture input pipe is a curved pipe, and the second end of the mixture input pipe passes through the side wall of the device housing and extends outside the device housing.

[0009] Optionally, in the above-mentioned gas-liquid separation device, the cylindrical filter body includes a first filter screen, an outer baffle, and an inner baffle, all of which are cylindrical in structure. The outer baffle is sleeved outside the inner baffle. The first filter screen is positioned between the inner baffle and the outer baffle. The inner baffle has an inlet, and the outer baffle has an outlet. The filter screen holes of the first filter screen communicate with the inlet and the outlet. The end of the first filter screen facing the support member covers the plurality of drain holes.

[0010] Optionally, in the above-mentioned gas-liquid separation device, the supporting component and the second filter structure divide the internal space into a liquid collection space, a receiving space, and an exhaust space distributed sequentially from bottom to top; the first filter structure is located in the receiving space, the plurality of drain holes are connected to the liquid collection space, the supporting component is also provided with a plurality of return air holes, the plurality of return air holes are distributed at intervals around the first filter structure and are offset from the outlet of the first filter structure, and the exhaust space is connected to the exhaust holes.

[0011] Optionally, in the above-mentioned gas-liquid separation device, the gas-liquid separation device further includes a gas baffle disposed in the liquid collection space, the gas baffle dividing the liquid collection space into a first subspace and a second subspace, the first subspace being located above the second subspace, and the gas baffle having a liquid passage hole connecting the first subspace and the second subspace.

[0012] Optionally, in the above-mentioned gas-liquid separation device, there are multiple liquid passage holes, and the multiple liquid passage holes are staggered with the multiple drain holes.

[0013] Optionally, in the above-described gas-liquid separation device, the projections of the plurality of drain holes onto the gas baffle are located in the area surrounded by the plurality of liquid passage holes.

[0014] Optionally, in the above-mentioned gas-liquid separation device, a liquid level observation window is provided on the side wall of the second subspace.

[0015] Optionally, in the above-mentioned gas-liquid separation device, a drain pipe is provided at the bottom of the side wall of the second subspace, and the drain pipe is lower than the bottom wall of the second subspace.

[0016] Optionally, in the above-mentioned gas-liquid separation device, the second filter structure includes a central region and a peripheral region, the peripheral region being arranged around the central region, and the peripheral region being provided with an air passage structure.

[0017] Optionally, in the above-mentioned gas-liquid separation device, the second filter structure includes two clamping plates and a second filter. One clamping plate, the second filter, and the other clamping plate are distributed sequentially from bottom to top, and the second filter is clamped between the two clamping plates. Air passage holes are provided on the parts of the two clamping plates located in the peripheral area, and the filter holes of the second filter are respectively connected to the air passage holes on the two clamping plates.

[0018] Optionally, in the above-mentioned gas-liquid separation device, the central region is circular, and the diameter of the central region is less than or equal to 300 mm.

[0019] Secondly, this application provides a gas-liquid separation system, including the gas-liquid separation device as described in any of the preceding claims.

[0020] The technical solutions provided in the embodiments of the present invention have the following advantages compared with the prior art: The gas-liquid separation device disclosed in this invention employs a structural design that combines a first filter structure and a second filter structure for gas-liquid separation. Because both the first and second filter structures are mesh structures, they can more effectively intercept and guide the liquid in the gas-liquid mixture, thereby improving the separation effect. Simultaneously, the filter mesh sizes of the first and second filter structures are different, allowing the first filter structure to perform primary gas-liquid separation, while the second filter structure performs secondary gas-liquid separation. This allows the gas-liquid mixture to pass through during primary separation while simultaneously separating large droplets, improving separation efficiency. Furthermore, the secondary separation process removes even small droplets entrained in the gas-liquid mixture (which is primarily gas). This multi-stage gas-liquid separation method, utilizing the combined first and second filter structures, significantly enhances the gas-liquid separation effect. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a cross-sectional view of a gas-liquid separation device provided in an embodiment of the present invention; Figure 2 for Figure 1 BB-direction sectional view; Figure 3 for Figure 1 CC-direction sectional view; Figure 4 for Figure 1 DD section view; Figure 5 for Figure 1 Partial structural diagram; Figure 6 for Figure 5 Sectional view along axis AA; Figure 7 and Figure 8 These are schematic diagrams of the inner baffle disclosed in the embodiments of the present invention from different perspectives; Figure 9 and Figure 10 These are schematic diagrams showing the interaction between the cover and the outer baffle from different perspectives; Figure 11 This is a cross-sectional view of the first filter screen disclosed in an embodiment of the present invention; Figure 12 This is a three-dimensional structural diagram of the first filter screen disclosed in an embodiment of the present invention. Figure 12 The filter holes of the first filter screen are not shown in the diagram. Figure 13 This is a schematic diagram of the structure of the base disclosed in an embodiment of the present invention; Figure 14 for Figure 13 EE-directed sectional view; Figure 15This is a schematic diagram of the structure of the support component disclosed in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures: 10. Device outer shell; 110. Internal space of the shell; 111. Liquid collection space; 1111. First subspace; 1112. Second subspace; 1113. Liquid level observation window; 1114. Drainage pipe; 112. Containing space; 1121. Mixture temporary storage space; 1122. External space; 113. Exhaust space; 120. Exhaust port; 101-Base; 1011. Groove; 1012. First mounting hole; 1013-Second mounting hole; 102-Cylinder; 103-Top cover. 20. First filter structure; 21. Cylindrical filter body; 211. First filter; 212. Outer baffle; 2121. Outlet; 213. Inner baffle; 2131. Inlet; 22. Cover. 30. Second filter structure; 31-Clamping plate; 32-Second filter; 311-Air vent; 301-Central area; 302-Outer area. 40. Support component; 41. Drain hole; 42. Gas-liquid mixture inlet; 43. Gas return hole. 50. Gas baffle; 51. Liquid passage hole. 60. Mixture inlet pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0028] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0029] Please refer to Figures 1 to 15 This invention discloses a gas-liquid separation device, which is used to separate gas and liquid in a gas-liquid mixture. The gas-liquid separation device may include a device housing 10, a first filter structure 20, and a second filter structure 30.

[0030] The outer casing 10 is a peripheral component of the gas-liquid separation device, providing a mounting base for the first filter structure 20 and the second filter structure 30. In this embodiment, the first filter structure 20 and the second filter structure 30 are installed inside the outer casing 10. The outer casing 10 has an internal space 110 and an exhaust port 120, which communicates with the internal space 110 and is used to discharge the gas after the gas-liquid mixture has been separated. The exhaust port 120 can be connected to a gas collection device or a gas delivery pipeline to collect the separated gas or transport it to a predetermined destination.

[0031] In this embodiment of the invention, both the first filter structure 20 and the second filter structure 30 are disposed within the housing space 110. Specifically, the first filter structure 20 and the second filter structure 30 can be installed in the housing space 110 by means of snap-fit, adhesive, or connector connection. The second filter structure 30 is located between the first filter structure 20 and the exhaust port 120. The size of the filter mesh of the first filter structure 20 is larger than the size of the filter mesh of the second filter structure 30, thereby enabling the first filter structure 20 to perform primary gas-liquid separation of the gas-liquid mixture and enabling the second filter structure 30 to perform secondary gas-liquid separation of the gas-liquid mixture processed by the first filter structure 20.

[0032] It should be explained that after the gas-liquid mixture is processed by the first filter structure 20, the large-sized liquid droplets in the gas-liquid mixture are separated, thereby achieving the separation of most of the liquid. The remaining gas-liquid mixture containing a small number of tiny liquid droplets will continue to flow to the second filter structure 30 and undergo gas-liquid separation processing again by the second filter structure 30.

[0033] In the specific working process, the gas-liquid mixture is conveyed into the device housing 10 and flows sequentially through the first filter structure 20 and the second filter structure 30. The first filter structure 20, as the main separation structure, can separate the liquid, especially large droplets, in the flowing gas-liquid mixture. After being processed by the first filter structure 20, the amount of liquid in the gas-liquid mixture is reduced. Then, when passing through the second filter structure 30, because the size of the filter pores in the second filter structure 30 is smaller than that in the first filter structure 20, the remaining small droplets in the gas-liquid mixture can be separated again, thereby improving the separation effect. During the process of the gas-liquid mixture flowing through the first filter structure 20 and the second filter structure 30, the separation of the liquid is achieved by making full use of inertial collision, interception, and diffusion effects. Finally, the gas after passing through the second filter structure 30 is discharged from the exhaust port 120.

[0034] In this embodiment of the invention, the first filter structure 20 and the second filter structure 30 use the same principle to separate the liquid in the gas-liquid mixture. It should be noted that both the first filter structure 20 and the second filter structure 30 are relatively dense mesh structures, with a large number of filter pores distributed throughout, thereby enabling more efficient separation of the liquid from the gas-liquid mixture.

[0035] As can be seen from the above working process, the gas-liquid separation device disclosed in this embodiment of the invention, through structural design, performs gas-liquid separation by setting a first filter structure 20 and a second filter structure 30. Since the first filter structure 20 and the second filter structure 30 are mesh structures, they can more effectively intercept the liquid in the gas-liquid mixture and guide the intercepted liquid away, thereby improving the separation effect of the gas-liquid mixture. At the same time, the filter mesh sizes of the first filter structure 20 and the second filter structure 30 are different, so that after the first filter structure 20 performs primary gas-liquid separation of the gas-liquid mixture, the second filter structure 30 can also perform secondary gas-liquid separation of the gas-liquid mixture. Thus, during the primary gas-liquid separation process, the gas-liquid mixture can pass through while large-sized liquid droplets in the gas-liquid mixture are quickly separated, thereby improving the separation efficiency. Then, during the secondary separation process, the tiny liquid droplets entrained in the gas-liquid mixture (which is mainly gas at this time) are also separated. This method of forming a multi-stage gas-liquid separation by cooperating the first filter structure 20 and the second filter structure 30 can improve the gas-liquid separation effect.

[0036] It should be explained that the primary gas-liquid separation described in the embodiments of the present invention can also be considered as the main gas-liquid separation process that separates most of the liquid in the gas-liquid mixture, while the secondary gas-liquid separation is the process that also separates the tiny liquid droplets entrained in the gas separated after passing through the first filter structure 20.

[0037] In this embodiment of the invention, the first filter structure 20 and the second filter structure 30 can have various structures, and this embodiment does not limit the specific structure and shape of the first filter structure 20 and the second filter structure 30. For example, the first filter structure 20 can be flat, and the first filter structure 20 can be directly connected to the device housing 10 to achieve installation in the housing space 110. The first filter structure 20 can have other shapes, or it can be indirectly connected to the device housing 10 through other intermediate components, thereby achieving installation in the housing space 110.

[0038] This invention discloses a specific structural installation method. Specifically, the gas-liquid separation device disclosed in this invention may further include a support component 40. The support component 40 may be a plate-like structure or other non-plate-like structures. The support component 40 is disposed in the inner space 110 of the shell. Specifically, the support component 40 may be fixedly connected to the inner wall of the outer shell 10 of the device by means of snap-fit, welding, etc., thereby realizing the installation of the support component 40 in the inner space 110 of the shell. In this embodiment, the first filter structure 20 may be a cover-like structure, and the first filter structure 20 may be disposed between the second filter structure 30 and the support component 40. The first filter structure 20 has an inner space and a cover opening. The cover opening communicates with the inner space. The edge region of the first filter structure 20 forming the cover opening is supported on the support component 40, and the support component 40 covers the cover opening, thereby forming a mixture storage space 1021 between the support component 40 and the first filter structure 20. Specifically, the edge area of ​​the first filter structure 20 forming the cover opening can be fixedly connected to the support component 40 by means of connectors, snap-fit, etc. The embodiments of the present invention do not limit the specific fixing method between the first filter structure 20 and the support component 40.

[0039] The support component 40 may be provided with multiple drain holes 41 and mixture inlet holes 42. The multiple drain holes 41 are spaced apart along the edge region and covered by the edge region. The gas-liquid mixture inlet hole 42 communicates with the hood opening, thereby communicating with the mixture temporary storage space 1021. In the specific working process, the gas-liquid mixture can be transported into the mixture temporary storage space 1021 through the mixture inlet hole 42, and then pass through the first filter screen structure 20 to achieve primary gas-liquid separation treatment. The gas-liquid mixture processed by the first filter screen structure 20 then flows out of the first filter screen structure 20 and enters the downstream second filter screen structure 30. The liquid intercepted by the first filter screen structure 20 will flow downward along the filter screen under the action of gravity and then flow into the multiple drain holes 41 covered by the first filter screen structure 20, and finally be discharged through the drain holes 41.

[0040] In essence, as described above, the liquid can be trapped as long as the gas-liquid mixture passes through the first filter structure 20, allowing the remaining gas to pass through the first filter structure 20 and flow away separately, ultimately achieving gas-liquid separation. In this embodiment, the first filter structure 20 is installed in the housing space 110 by adding a support component 40. At the same time, the separated liquid is discharged by opening multiple drainage holes 41 on the support component 40 that are covered by the first filter structure 20 (essentially covered by the edge area of ​​the cover formed by the first filter structure 20). At the same time, the multiple drain holes 41 covered by the first filter structure 20 can prevent the gas-liquid mixture entering the mixture storage space 1021 or the gas-liquid mixture passing through the first filter structure 20 from flowing away in the direction of draining through the drain holes 41. This ensures the separation effect of the gas-liquid mixture entering the mixture storage space 1021, which is about to be separated by the first filter structure 20, or ensures the separation effect of the gas-liquid mixture after flowing through the first filter structure 20, which is about to be separated by the second filter structure 30.

[0041] It should be explained that the edge region of the first filter structure 20 surrounding the hood also has filter holes of the first filter structure 20. The liquid trapped by the first filter structure 20 will eventually flow through the filter holes inside the first filter structure 20 to the edge region, and then through the filter holes in the edge region to the drain hole 41, and finally be discharged through the drain hole 41. In other words, although the edge region of the first filter structure 20 surrounding the hood covers the multiple drain holes 41, it will not only not hinder the liquid separated by the first filter structure 20 from being discharged through the drain holes 41, but will also further improve the gas-liquid separation effect of the first filter structure 20 and the second filter structure 30 on the gas-liquid mixture, preventing excessive gas from flowing away with the liquid through the drain holes 41, and helping to better ensure that the gas-liquid mixture passing through the first filter structure 20 flows towards the exhaust hole 120.

[0042] As described above, the plurality of drainage holes 41 are spaced apart along the edge region of the first filter structure 20. Specifically, the plurality of drainage holes 41 may be unevenly spaced. To improve the uniformity of drainage, in one embodiment, the plurality of drainage holes 41 may be evenly spaced.

[0043] In this embodiment of the invention, the structure of the first filter structure 20 can be varied, and this embodiment does not limit the specific structure of the first filter structure 20. For example, the first filter structure 20 can be a single filter element in the shape of a cover. This embodiment of the invention discloses a specific first filter structure 20, which may include a cylindrical filter body 21 and a cover 22. The bottom port of the cylindrical filter body 21 is the cover opening described above. The cylindrical filter body 21 is the component of the first filter structure 20 that performs its gas-liquid separation function. The filter holes of the first filter structure 20 are provided on the cylindrical filter body 21. That is to say, the filter holes of the cylindrical filter body 21 are essentially the filter holes of the first filter structure 20. The filter holes of the cylindrical filter body 21 connect the inner space of the cover (or the mixture temporary storage space) and the outer space 1022 of the first filter structure 20. The mixture temporary storage space 1021 and the outer space 1022 are located on the inner and outer sides of the first filter structure 20, respectively.

[0044] The cover 22 is located at the top port of the cylindrical filter body 21 and covers the top port. Specifically, the cover 22 can be installed at the top port of the cylindrical filter body 21 by means of adhesive, snap-fit, etc. The gas-liquid mixture inlet 42 faces the cover 22, that is, the gas-liquid mixture inlet 42 is arranged opposite to the cover 22.

[0045] This structure allows the gas-liquid mixture, input through the gas-liquid mixture inlet 42 into the mixture storage space 1021, to flow towards the cover 22. The cover 22 slows the flow, and the mixture then flows outwards towards the cylindrical filter body 21, ultimately passing through the filter screen of the cylindrical filter body 21 to achieve primary gas-liquid separation. During this process, the gas-liquid mixture input into the mixture storage space 1021 is slowed down, preventing it from passing through the cylindrical filter body 21 too quickly. This allows the cylindrical filter body 21 to effectively intercept the liquid in the gas-liquid mixture, ultimately improving the gas-liquid separation effect. Simultaneously, the cover 22 reduces the velocity of subsequent gas-liquid mixtures entering the cylindrical filter body 21, thus mitigating the impact on the cylindrical filter body 21 and preventing damage from high-pressure gas-liquid mixtures.

[0046] To facilitate the delivery of the gas-liquid mixture to the gas-liquid mixture inlet 42, the gas-liquid separation device disclosed in this embodiment may further include a mixture inlet pipe 60. The first end of the mixture inlet pipe 60 is connected to the gas-liquid mixture inlet 42. The mixture inlet pipe 60 is a curved pipe, and the second end of the mixture inlet pipe 60 extends beyond the device housing 10 through the side wall of the housing 10. Specifically, the second end of the mixture inlet pipe 60 can be connected to the source of the gas-liquid mixture. This structure allows the gas-liquid mixture to be introduced from outside the device housing 10 to the gas-liquid mixture inlet 42 via the mixture inlet pipe 60. Exemplarily, the second end of the mixture inlet pipe 60 extends horizontally, and the supporting member 40 can be a supporting plate that extends horizontally, meaning the surface of the supporting plate is perpendicular to the vertical direction. The central axis of the gas-liquid mixture inlet 42 extends vertically.

[0047] In this embodiment of the invention, the structure of the cylindrical filter body 21 can be varied. For example, the cylindrical filter body 21 may only include the first filter screen 211 described later, with the cap 22 covering the port of the first filter screen 211 facing away from the support member 40. During actual operation, as the functional main body of the first filter screen structure 20, the cylindrical filter body 21 is easily deformed by the impact of the gas-liquid mixture. Therefore, in one embodiment, the cylindrical filter body 21 may include the first filter screen 211, an outer baffle 212, and an inner baffle 213. The first filter screen 211, the outer baffle 212, and the inner baffle 213 are all cylindrical structures.

[0048] The cover 22 can mate with the port of the outer baffle 212 furthest from the supporting member 40 to cover the corresponding port of the outer baffle 212. For example, the cover 22 and the outer baffle 212 can be connected by means of bonding, welding, etc. To reduce assembly, the cover 22 and the outer baffle 212 can be an integral structure. The embodiments of this application do not limit the specific connection method between the cover 22 and the outer baffle 212.

[0049] Specifically, the outer baffle 212 can be fitted over the inner baffle 213, and the first filter screen 211 can be positioned between the inner baffle 213 and the outer baffle 212, thereby being protected by the inner baffle 213 and the outer baffle 212 and preventing deformation due to easy exposure. The inner baffle 213 has an inlet 2131, and the outer baffle 212 has an outlet 2121. The filter holes of the first filter screen 211 are essentially the filter holes of the cylindrical filter body 21, and also the filter holes of the first filter structure 20. The filter holes of the first filter screen 211 connect the inlet 2131 and the outlet 2121. The end of the first filter screen 211 facing the support member 40 is covered with multiple drainage holes 41, so that the filter holes of the first filter screen 211 distributed at its end facing the support member 40 are connected to the multiple drainage holes 41.

[0050] In the specific working process, the gas-liquid mixture entering the first filter structure 20 from the mixture storage space will enter the first filter structure 20 through the inlet 2131 of the inner baffle 213, and then pass through the filter holes of the first filter 211 for primary gas-liquid separation. The gas-liquid mixture after primary gas-liquid separation (there will still be tiny droplets in the airflow, so this part can still be called gas-liquid mixture, but the liquid content of the gas-liquid mixture after passing through the first filter structure 20 will be significantly reduced compared to the liquid content of the gas-liquid mixture in the mixture storage space) will pass through the outer baffle 212 and enter the outer space 1022 of the first filter structure 20.

[0051] In this embodiment, the inlet 2131 and outlet 2121 essentially function as a clearance mechanism, preventing obstruction of the gas-liquid mixture flowing through the first filter structure 20. Specifically, there are multiple inlets 2131 and outlets 2121, which can be distributed in various ways on the inner baffle 213 and outer baffle 212. For example, multiple inlets 2131 can be arranged in rows and columns on the inner baffle 213. Similarly, multiple outlets 2121 can also be arranged in rows and columns on the outer baffle 212.

[0052] To improve primary separation efficiency, multiple inlets 2131 and multiple outlets 2121 can be at least partially staggered, thereby making the flow path of the gas-liquid mixture as tortuous as possible, and thus increasing the interception effect of liquid in the gas-liquid mixture after passing through the first filter structure 20. In this embodiment, the diameter of the inlet 2131 can be larger than the diameter of the outlet 2121, thereby making it easier for the gas-liquid mixture to enter the first filter structure 20.

[0053] In this embodiment of the invention, the support portion 40 and the second filter structure 30 can divide the internal space 110 into a liquid collection space 111, a containment space 112, and an exhaust space 113, distributed sequentially from bottom to top. The liquid collection space 111 is used to collect the liquid separated during the gas-liquid separation process. The plurality of drain holes 41 are connected to the liquid collection space 111. During the specific gas-liquid separation process, the separated liquid can flow continuously downward through the drain holes 41 under its own gravity and eventually enter the liquid collection space 111 for collection. The containment space 112 is used to contain the first filter structure 20, which is located in the containment space 112. The exhaust space 113 is used to temporarily store the gas separated during the gas-liquid separation process. The separated gas eventually flows through the exhaust space 113 and is discharged from the gas-liquid separation device through the exhaust hole 120. In this case, the containment space 112 can essentially include a mixture temporary storage space 1121 and an outer space 1122. This reuse of some components to achieve spatial division of the internal space 110 is beneficial to reducing mutual influence.

[0054] In the specific gas-liquid separation process, the separated liquid flows into the liquid collection space 111 through the drain hole 41. Inevitably, a small amount of gas will follow into the liquid collection space 111, which over time can lead to higher gas pressure and affect the continuous discharge of liquid through the drain hole 41. Therefore, the support portion 40 can further be provided with a return air hole 43, which connects the space outside the first filter structure 20 (i.e., the outer space 1122) in the receiving space 112 with the liquid collection space 111. The return air hole 43 allows gas entering the liquid collection space 111 to flow back into the outer space 1122, and then flow into the exhaust space 113 through the second filter structure 30. The return air hole 43 not only enables real-time gas return within the liquid collection space 111 but also facilitates the normal drainage of liquid through the drain hole 41.

[0055] The number of return air holes 43 can be one or more; the specific number of return air holes 43 is not limited in this embodiment of the invention. To improve the return air effect, in one embodiment, there can be multiple return air holes 43, which can be spaced apart on the support member 40. The specific distribution of the multiple return air holes 43 is not limited in this embodiment of the invention. In one embodiment, the multiple return air holes 43 can be spaced apart around the first filter structure 20 to achieve a more balanced return air. Since the amount of gas entering the liquid collection space 111 is relatively small, the number of return air holes 43 can be small; for example, there can be four return air holes 43.

[0056] As described above, after the gas-liquid mixture passes through the first filter structure 20, most of the liquid is separated. To improve drainage efficiency, the number of drainage holes 41 is relatively large, for example, 30 drainage holes 41. In this paper, the number of drainage holes 41 can be greater than the number of return gas holes 43. Of course, the specific number of drainage holes 41 and return gas holes 43 is not limited in this embodiment of the invention. Similarly, since less gas needs to be returned, the diameter of the return gas holes 43 can be smaller than the diameter of the drainage holes 41.

[0057] In the specific gas return process, the gas return velocity in the liquid collection space 111 is relatively low, while the airflow returning to the outer space 1122 through the return air hole 43 is prone to interfering with the gas-liquid mixture flowing through the first filter structure 20. The gas-liquid mixture flowing out of the first filter structure 20 after preliminary gas-liquid separation has a higher flow velocity. In order to avoid suppressing the return gas, in a further embodiment, the return air hole 43 and the outlet 2121 of the first filter structure 20 are staggered to alleviate the adverse effects of airflow conflict on each other.

[0058] As described above, during the primary gas-liquid separation process, some gas flows into the liquid collection space 111 through the drain hole 41, while liquid gradually accumulates in the liquid collection space 111. Some gas entering the liquid collection space 111 flows towards the liquid surface, impacting it and producing sound, thus generating noise. Therefore, the gas-liquid separation device disclosed in this embodiment may further include a gas baffle 50, which can be a flat plate. Specifically, the gas baffle 50 is fixed to the inner wall of the device housing 10. Specifically, the gas baffle 50 can be connected to the inner wall of the device housing 10 through methods such as bonding or snap-fitting. The gas baffle 50 divides the liquid collection space 111 into a first subspace 1111 and a second subspace 1112, with the first subspace 1111 located above the second subspace 1112. The gas baffle 50 has a liquid passage hole 51 connecting the first subspace 1111 and the second subspace 1112.

[0059] In this embodiment, the second subspace 1112 is essentially the main space for collecting liquid. Liquid flowing into the liquid collection space 111 through the drain hole 41 falls onto the gas baffle 50 and eventually flows into the second subspace 1112 through the liquid through hole 51 on the gas baffle 50 for collection. Simultaneously, a small amount of gas entering the liquid collection space 111 through the drain hole 41 flows towards the gas baffle 50 and is eventually blocked by it. The blocking effect of the gas baffle 50 reduces the impact of gas entering the liquid collection space 111 on the liquid surface, thus reducing noise caused by the impact. Furthermore, the gas baffle 50 is located above the second subspace 1112, thus providing a blocking effect and mitigating liquid carryover during the gas return process.

[0060] The number of liquid passage holes 51 can be one or more, and this embodiment of the invention is not limited. To better facilitate liquid passage, there can be multiple liquid passage holes 51. These multiple liquid passage holes 51 can be distributed at intervals. Furthermore, the multiple liquid passage holes 51 can be evenly distributed on the gas baffle 50.

[0061] As described above, there can be multiple drain holes 41, which can be arranged in a ring around the first filter structure 20. In embodiments where there are multiple liquid passage holes 51, they can also be arranged in a ring. In this embodiment, after the gas enters the liquid collection space 111 through the drain holes 41, it continues to flow towards the gas baffle 50. To improve the blocking effect on the gas, in a further embodiment, the liquid passage holes 51 can be staggered with the drain holes 41. This embodiment does not limit the specific distribution of the liquid passage holes 51 and the drain holes 41. In embodiments where both the multiple drain holes 41 and the multiple liquid passage holes 51 are arranged in a ring, the projection of the multiple drain holes 41 on the gas baffle 50 can be located within the area surrounded by the multiple liquid passage holes 51. This method enables the drain holes 41 to achieve balanced liquid drainage in the direction surrounding the first filter structure 20, while the multiple liquid passage holes 51 can substantially achieve balanced liquid passage in the direction surrounding the multiple drain holes 41.

[0062] In an embodiment where the liquid collection space 111 includes a second subspace 1112, the second subspace 1112 is essentially the space where liquid collects in the liquid collection space 111. To facilitate the monitoring of the liquid level in the second subspace 1112, in one embodiment, a liquid level observation window 1113 may be provided on the side wall of the second subspace 1112, allowing relevant personnel to observe the liquid level.

[0063] In other embodiments, the gas-liquid separation device disclosed in this invention may further include a liquid level detection device, which may be disposed within the second subspace 1112. The liquid level detection device is used to detect the actual liquid level in the second subspace 1112 and feed it back to monitoring equipment or a control terminal. By configuring a liquid level detection device, automated detection can be achieved, which is beneficial for more convenient monitoring of liquid level changes within the second subspace 1112.

[0064] To facilitate the discharge of liquid collected in the liquid collection space 111, a drain pipe 1114 can be provided at the bottom of the side wall of the second subspace 1112. The drain pipe 1114 can be connected to the second subspace 1112, and the liquid collected in the second subspace 1112 can be discharged outside the gas-liquid separator through the drain pipe 1114. Specifically, a drain valve can be installed on the drain pipe 1114 to control the opening and closing of the drain pipe 1114. For ease of control, the drain valve can be an electrically controlled valve.

[0065] During the discharge of liquid collected in the second subspace 1112, thorough liquid discharge helps prevent liquid residue from remaining in the gas-liquid separator during non-operating periods. Therefore, in a further embodiment, the drain pipe 1114 can be lower than the bottom wall of the second subspace 1112. In this structure, because the drain pipe 1114 is positioned lower, the liquid in the bottom wall of the second subspace 1112 is drained away as much as possible through the lower-positioned drain pipe 1114, thereby alleviating the liquid residue problem. Simultaneously, the drain pipe 1114 is located at the bottom of the side wall of the second subspace 1112, thus its lower position avoids the problem of a large ineffective gas phase volume in the internal space 110 due to a higher placement.

[0066] In a further technical solution, the bottom wall of the second subspace 1112 can be an inclined bottom wall. This inclined bottom wall allows the liquid collected in the second subspace 1112 to converge towards the lowest point of the inclined bottom wall during discharge, and then be discharged through the drain pipe 1114. It should be explained that when the bottom wall of the second subspace 1112 is an inclined bottom wall, the drain pipe 1114 being lower than the bottom wall of the second subspace 1112 means that the drain pipe 1114 is lower than the lowest point of the bottom wall of the second subspace 1112. It should be added that the bottom wall of the second subspace 1112 can essentially be considered the bottom wall of the device casing 10.

[0067] In this embodiment of the invention, the structure of the second filter structure 30 can be varied. For example, the second filter structure 30 may only include the second filter 32 described below. The second filter 32 can be directly connected to the inner wall of the device housing 10 and located in the flow path of the gas-liquid mixture between the first filter structure 20 and the exhaust port 120. Considering the overall structural stability and to avoid deformation or installation stability of the second filter 32 under the impact of the gas-liquid mixture, in a specific embodiment, the second filter structure 30 may include the two clamping plates 31 described below and the second filter 32. In this embodiment, the second filter 32 is less prone to deformation under the clamping of the two clamping plates 31, and the installation stability is improved.

[0068] As described above, the second filter structure 30 is located between the first filter structure 20 and the exhaust port 120. The exhaust port 120 is located at the middle of the top of the device housing 10. During operation, the exhaust port 120 is in a low-pressure area. For example, if the exhaust port 120 is connected to a suction device, most of the lighter fluids in the gas-liquid separation device (including the separated gas, gas containing trace amounts of liquid after primary gas-liquid separation, etc.) will flow through the second filter structure 30 to the drain port 120. It should be explained that this refers to the fact that most of the fluid mainly contains gas, and a small amount of gas will inevitably flow into the liquid collection space 111 through the drain port 41. The gas baffle 50, return air port 43, and other structures mentioned above are mainly for the gas escaping into the liquid collection space 111. The gas baffle 50 can prevent this part of the gas entering the liquid collection space 111 from impacting the liquid surface, and the return air port 43 guides this part of the gas entering the liquid collection space 111 to flow back. During this process, the gas entering the liquid collection space 111 gradually accumulates and increases the gas pressure in the liquid collection space 111. Since the exhaust port 120 is a low-pressure area, the gas entering the liquid collection space 111 will flow to the low-pressure area through the return air port 43.

[0069] To prevent the gas-liquid mixture flowing out of the first filter structure 20 from passing through the second filter structure 30 too quickly and affecting the gas-liquid separation effect of the second filter structure 30, in one embodiment, the second filter structure 30 may include a central region 301 and a peripheral region 302. The peripheral region 302 may be arranged around the central region 301. That is, the peripheral region 302 is essentially an annular region. The peripheral region 302 is provided with an air passage structure, so that the gas-liquid mixture flowing out of the first filter structure 20 can pass through the second filter structure 30. Specifically, the central region 301 can be opposite to the exhaust port 120, and the outer region 302 can be staggered with the exhaust port 120. The central region 301 is a non-pass-through structure, that is, after the gas-liquid mixture flows to the central region 301, it cannot pass through the central region 301 and passes through the second filter structure 30, thereby avoiding the direct adsorption of the gas-liquid mixture by the low-pressure area. At the same time, the outer region 302, which allows the gas-liquid mixture to pass through, is staggered with the exhaust port 120, which also avoids the direct adsorption of the gas-liquid mixture by the low-pressure area. Therefore, this structure can prevent the gas-liquid mixture from passing through the second filter structure 30 too quickly when it reaches the second filter structure 30, so that the gas-liquid mixture can be fully processed by the second filter structure 30, avoiding the droplet entrainment phenomenon caused by the gas-liquid mixture passing through the second filter structure 30 too quickly.

[0070] In the specific working process, the gas-liquid mixture flowing out from the first filter structure 20 reaches the second filter structure 30. Specifically, the gas-liquid mixture reaching the central region 301 is blocked and slowed down, then spreads to the periphery. Finally, when it spreads to the outer region 302, it passes through the air passage structure of the outer region 302, and then undergoes secondary gas-liquid separation treatment through the second filter structure 30. The gas-liquid mixture reaching the outer region 302 directly passes through the air passage structure of the outer region 302, and then undergoes secondary gas-liquid separation treatment through the second filter structure 30.

[0071] There are multiple ways to realize the second filter structure 30 that includes a central region 301 and a peripheral region 302. For example, in an embodiment where the second filter structure 30 only includes a second filter 32, the peripheral region 302 of the second filter 32 can be sealed with glue to form a non-air-permeable structure, while the filter holes of the second filter 32 located in the central region 301 are air-permeable structures.

[0072] This invention discloses a specific second filter structure 30, which may include two clamping plates 31 and a second filter 32. One clamping plate 31, the second filter 32, and the other clamping plate 31 are arranged sequentially from bottom to top (approaching the exhaust port 120), with the second filter 32 sandwiched between the two clamping plates 31. Multiple holes 311 are formed on the outer region 302 of both clamping plates 31, and the filter holes of the second filter 32 communicate with the air passage holes 311 on the two clamping plates 31. In this embodiment, the air passage holes 311 of the two clamping plates 31 and the filter holes on the second filter 32 constitute the air passage structure of the outer region 302. The filter holes of the second filter 32 are fine mesh, capable of performing secondary gas-liquid separation treatment on the gas-liquid mixture flowing through the outer region 302. In this embodiment, the two clamping plates 31 not only achieve the installation of the second filter screen 32 by clamping, but also provide a certain degree of protection for the second filter screen 32, making the second filter screen 32 less prone to impact deformation.

[0073] The central region 301 can be circular, polygonal, elliptical, etc. Correspondingly, the outer region 302 surrounding the central region 301 can be circular, polygonal, elliptical, etc. This embodiment of the invention does not limit the specific shapes of the central region 301 and the outer region 302. Similarly, this embodiment of the invention does not limit the specific dimensions of the central region 301 and the outer region 302. For example, the central region 301 can be circular, and its diameter can be less than or equal to 300 mm.

[0074] As described above, the exhaust port 120 is connected to the exhaust space 113. Specifically, the exhaust port 120 can be located on the top wall of the exhaust space 113. It should be explained that the top wall of the exhaust space 113 can actually be the top wall of the device housing 10. The top wall of the exhaust space 113 is opposite to the bottom wall of the second subspace 1112 mentioned above, and the top wall of the exhaust space 113 is located above the bottom wall of the second subspace 1112. After secondary gas-liquid separation treatment by the second filter structure 30, the lighter gas rises and enters the exhaust space 113, and is finally discharged from the exhaust port 120.

[0075] To facilitate exhaust, in one embodiment, the top wall of the exhaust space 113 can be a dome, that is, the top wall of the exhaust space 113 is an arc-shaped surface. This structure is relatively smooth, allowing the gas entering the exhaust space 113 to flow towards the exhaust port 120 under the guidance of the arc-shaped surface, ultimately improving exhaust efficiency. Specifically, the exhaust port 120 is located at the highest point of the dome.

[0076] The device housing 10 in this embodiment may include a base 101, a cylindrical body 102, and a top cover 103. The bottom end of the cylindrical body 102 can be sealed to the base 101, and the top cover 103 can be sealed to the top end of the cylindrical body 102. The base 101, the cylindrical body 102, and the top cover 103 form an internal space 110. The top cover 103 may form the dome described above.

[0077] In a more specific structural design, the base 101 may have a groove 1011, the bottom of which can be considered the bottom wall of the internal space 110 described above. An exhaust port 120 is located on the top cover 103. The groove 1011 widens the internal space 110. A first mounting hole 1012 is provided on the base 101, and a drain pipe 11114 can be installed in this hole. The first mounting hole 1012 is lower than the bottom wall of the groove 1011, which facilitates the drain pipe 1114 being lower than the bottom wall of the groove 1011, thus ensuring thorough subsequent liquid drainage.

[0078] The base 101 has an annular flange located outside the inner space 110 of the housing. Multiple second mounting holes 1013 are spaced apart circumferentially on the annular flange, allowing the base 101 to be mounted on the mounting base of the gas-liquid separator. For example, the base 101 is connected to the mounting base via a connector (e.g., an anchor, a threaded connector) that mates with the second mounting holes 1013, ultimately enabling the gas-liquid separator to be mounted on the mounting base.

[0079] This application provides a gas-liquid separation system, including the gas-liquid separation device as described in any of the foregoing embodiments.

[0080] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0081] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0082] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A gas-liquid separation device, characterized in that, The device includes a housing (10), a first filter structure (20), and a second filter structure (30). The housing (10) has an inner space (110) and an exhaust port (120) communicating with the inner space (110). The first filter structure (20) and the second filter structure (30) are both located in the inner space (110). The second filter structure (30) is located between the first filter structure (20) and the exhaust port (120). The filter hole size of the first filter structure (20) is larger than that of the second filter structure (30).

2. The gas-liquid separation device according to claim 1, characterized in that, The gas-liquid separation device further includes a support member (40) disposed in the inner space (110) of the shell. The first filter structure (20) is a cover-shaped structure and is disposed between the second filter structure (30) and the support member (40). The first filter structure (20) has an inner space and a cover opening communicating with the inner space. The edge area of ​​the first filter structure (20) surrounding the cover opening is supported on the support member (40). The support member (40) covers the cover opening. The support member (40) has a plurality of drain holes (41) and a gas-liquid mixture inlet hole (42) communicating with the cover opening. The plurality of drain holes (41) are distributed at intervals along the edge area and are covered by the edge area.

3. The gas-liquid separation device according to claim 2, characterized in that, The first filter structure (20) includes a cylindrical filter body (21) and a cover (22). The bottom port of the cylindrical filter body (21) is the cover opening. The cover (22) is located at the top port of the cylindrical filter body (21) and covers the top port. The filter mesh of the cylindrical filter body (21) connects the inner space of the cover and the outer space (1122) of the first filter structure (20). The gas-liquid mixture inlet (42) faces the cover (22).

4. The gas-liquid separation device according to claim 3, characterized in that, The gas-liquid separation device also includes a mixture input pipe (60), the first end of which is connected to the gas-liquid mixture input hole (42). The mixture input pipe (60) is a curved pipe, and the second end of the mixture input pipe (60) passes through the side wall of the device housing (10) and extends outside the device housing (10).

5. The gas-liquid separation device according to claim 3, characterized in that, The cylindrical filter body (21) includes a first filter screen (211), an outer baffle (212), and an inner baffle (213), all of which are cylindrical in structure. The outer baffle (212) is sleeved outside the inner baffle (213). The first filter screen (211) is positioned between the inner baffle (213) and the outer baffle (212). The inner baffle (213) has an inlet (2131), and the outer baffle (212) has an outlet (2121). The filter holes of the first filter screen (211) connect the inlet (2131) and the outlet (2121). The end of the first filter screen (211) facing the support member (40) covers the plurality of drainage holes (41).

6. The gas-liquid separation device according to claim 2, characterized in that, The support component (40) and the second filter structure (30) divide the internal space (110) into a liquid collection space (111), a receiving space (112), and an exhaust space (113) distributed sequentially from bottom to top; the first filter structure (20) is located in the receiving space (112), the plurality of drain holes (41) are connected to the liquid collection space (111), the support component (40) is also provided with a plurality of return air holes (43), the plurality of return air holes (43) are distributed at intervals around the first filter structure (20) and are staggered from the outlet (2121) of the first filter structure (20), and the exhaust space (113) is connected to the exhaust hole (120).

7. The gas-liquid separation device according to claim 6, characterized in that, The gas-liquid separation device further includes a gas baffle (50) disposed in the liquid collection space (111). The gas baffle (50) divides the liquid collection space (111) into a first subspace (1111) and a second subspace (1112). The first subspace (1111) is located above the second subspace (1112). The gas baffle (50) is provided with a liquid passage hole (51) connecting the first subspace (1111) and the second subspace (1112).

8. The gas-liquid separation device according to claim 7, characterized in that, There are multiple liquid passage holes (51), and the multiple liquid passage holes (51) are staggered with the multiple drain holes (41).

9. The gas-liquid separation device according to claim 8, characterized in that, The projections of the plurality of drain holes (41) onto the gas baffle (50) lie in the area surrounded by the plurality of liquid passage holes (51).

10. The gas-liquid separation device according to claim 7, characterized in that, The second subspace (1112) has a liquid level observation window (1113) on its side wall.

11. The gas-liquid separation device according to claim 7, characterized in that, A drain pipe (1114) is provided at the bottom of the side wall of the second subspace (1112), and the drain pipe (1114) is lower than the bottom wall of the second subspace (1112).

12. The gas-liquid separation device according to claim 1, characterized in that, The second filter structure (30) includes a central region (301) and a peripheral region (302), the peripheral region (302) being arranged around the central region (301), and the peripheral region (302) being provided with an air passage structure.

13. The gas-liquid separation device according to claim 12, characterized in that, The second filter structure (30) includes two clamping plates (31) and a second filter (32). One clamping plate (31), the second filter (32) and the other clamping plate (31) are distributed from bottom to top, and the second filter (32) is clamped between the two clamping plates (31). Air holes (311) are provided on the two clamping plates (31) at the part located in the peripheral area (302). The filter holes of the second filter (32) are respectively connected to the air holes (311) on the two clamping plates (31).

14. A gas-liquid separation system, characterized in that, Includes the gas-liquid separation device as described in any one of claims 1-13.

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