Oil-gas separator

Abstract

The utility model relates to an oil-gas separator. Comprising a separator body, a separation protective cover and a buffer part. The separator main body is provided with a containing cavity and an oil outlet communicated with the containing cavity; the separation protective cover is provided with a movable cavity, and an inlet and an outlet which are communicated with the movable cavity, and the inlet is communicated with the oil outlet; the buffer piece is located in the movable cavity and movably connected to the separation protective cover. The separator body of the oil-gas separator is provided with the containing cavity and the oil outlet. The buffer piece is located in the movable cavity and movably connected to the separation protective cover. When high-speed oil gas enters the movable cavity and impacts the buffering piece, the buffering piece can play a buffering role, the flow speed and pressure of the oil gas are reduced, and therefore a large number of oil drops are prevented from being sputtered out of the oil-gas separator along with gas at random, and oil contamination accumulation is reduced.

Description

Technical Field

[0001] This application relates to the field of diesel engine oil-gas separator technology, and in particular to an oil-gas separator. Background Technology

[0002] When the diesel engine is running at high speed, the pressure of the oil-gas mixture in the crankcase increases, and the oil-gas separator cannot effectively separate the oil and gas. A large number of oil droplets are randomly splashed out of the oil-gas separator along with the gas, forming oil sludge accumulation.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] Therefore, it is necessary to provide an oil-gas separator to address the problem of a large number of oil droplets being randomly splashed out of the oil-gas separator along with the gas, forming oil sludge accumulation.

[0005] An oil-gas separator, comprising:

[0006] The separator body has a receiving cavity and an oil outlet communicating with the receiving cavity;

[0007] A separation protective cover is provided, the separation protective cover having a movable cavity and an inlet and an outlet communicating with the movable cavity, the inlet being connected to the oil outlet;

[0008] A buffer element is located within the movable cavity and is movably connected to the separation protective cover.

[0009] In one embodiment, the buffer is provided with a groove, the opening of which faces the inlet.

[0010] In one embodiment, the groove wall surface is an arc surface.

[0011] In one embodiment, the buffer is slidably fitted to the wall of the movable cavity, and the buffer at least partially covers the outlet.

[0012] In one embodiment, the oil-gas separator further includes an elastic element located within the movable cavity, the elastic element being connected between the buffer element and the cavity wall of the movable cavity.

[0013] In one embodiment, the inlet and the outlet are located on the same side of the buffer, and the elastic element is located on the opposite side of the buffer away from the inlet.

[0014] In one embodiment, the separation protective cover includes a connected sleeve, a movable part, and a discharge part, which together form the movable cavity. The sleeve has the inlet, the separation protective cover is located in the movable part and is movably connected to the movable part, the discharge part protrudes from the outside of the movable part, and the discharge part has the outlet.

[0015] In one embodiment, the inner diameter of the outlet gradually decreases from one end near the movable part to the end away from the movable part along the direction of liquid flow.

[0016] In one embodiment, the inner wall of the outlet has a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are opposite to each other and spaced apart, the first inclined surface faces the inlet and the second inclined surface faces away from the inlet.

[0017] In one embodiment, the length of the first inclined plane is greater than the length of the second inclined plane along the direction of liquid flow.

[0018] The aforementioned oil-gas separator has a receiving cavity and an oil outlet. The receiving cavity serves as a space for preliminary oil-gas separation. When the mixed oil and gas in the crankcase enters the receiving cavity of the separator body, the flow rate of the oil and gas decreases due to the increased space. Based on the different densities of oil droplets and gas in the oil and gas, some oil droplets will first settle to the bottom of the receiving cavity under gravity, achieving preliminary oil-liquid separation. The pre-separated oil and gas then enter subsequent components through the oil outlet. The separation protective cover has a movable cavity and an inlet and outlet connected to it, with the inlet connected to the oil outlet. This is equivalent to setting up a dedicated separation area in the oil-gas flow path. When oil and gas enter the movable cavity of the separation protective cover from the oil outlet of the separator body, the separation protective cover can confine the separation process within a specific space, preventing the oil and gas from spreading randomly, which is beneficial to improving the separation effect. A buffer component is located inside the movable cavity and is movably connected to the separation protective cover. When high-speed oil and gas enter the movable cavity and impact the buffer component, the buffer component can act as a buffer, reducing the flow rate and pressure of the oil and gas. On the one hand, the movable connection of the buffer allows it to shift or sway according to the impact force of the oil and gas. This dynamic buffering process can more effectively consume the kinetic energy of the oil and gas, making it easier for oil droplets in the oil and gas to separate from the gas due to loss of kinetic energy. On the other hand, the buffer can also change the flow direction of the oil and gas, making the oil and gas form a complex flow field in the movable cavity, increasing the chance of separation between oil droplets and gas, thereby avoiding a large number of oil droplets being randomly splashed out of the oil-gas separator with the gas, and reducing oil accumulation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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 the disclosed drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of an oil-gas separator provided in an embodiment of this application.

[0021] Explanation of reference numerals in the attached drawings: 100, oil-gas separator; 1, separator body; 11, receiving cavity; 12, oil outlet; 13, oil outlet channel; 2, separation protective cover; 21, movable cavity; 22, inlet; 23, outlet; 24, sleeve part; 25, movable part; 26, outlet part; 261, first inclined surface; 262, second inclined surface; 3, buffer element; 31, groove; 311, first arc surface; 312, second arc surface; 4, elastic element. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] The function of the diesel engine's oil-gas separator is to separate the oil-gas mixture in the crankcase, allowing the gas to be discharged into the atmosphere and the separated oil to return to the oil pan of the diesel engine through certain pipes. As the diesel engine speed increases, the pressure of the injected oil-gas mixture increases, making it difficult for the oil-gas separator to completely separate the mixture. Under the action of greater pressure, the oil-gas mixture is randomly splashed out from the oil-gas separator, and oil droplets in the oil-gas adhere to the locomotive roof, leading to oil sludge accumulation.

[0024] To address the aforementioned problems, this application provides an oil-gas separator 100. Please refer to... Figure 1The oil-gas separator 100 includes a separator body 1, a separation protective cover 2, and a buffer component 3. The separator body 1 has a receiving cavity 11 and an oil outlet 12 communicating with the receiving cavity 11; the separation protective cover 2 has a movable cavity 21 and an inlet 22 and an outlet 23 communicating with the movable cavity 21, with the inlet 22 communicating with the oil outlet 12; the buffer component 3 is located inside the movable cavity 21 and is movably connected to the separation protective cover 2. The separator body 1 of the oil-gas separator 100 has a receiving cavity 11 and an oil outlet 12. The receiving cavity 11 serves as a space for preliminary oil-gas separation. When the mixed oil and gas in the crankcase enters the receiving cavity 11 of the separator body 1, the flow rate of the oil and gas decreases due to the increased space. Based on the different densities of oil droplets and gas in the oil and gas, under the action of gravity, some oil droplets will first settle to the bottom of the receiving cavity 11, achieving preliminary oil-liquid separation. Then, the preliminarily separated oil and gas enter subsequent components through the oil outlet 12. The separation shield 2 is equipped with a movable chamber 21 and an inlet 22 and an outlet 23 connected to the movable chamber 21, with the inlet 22 connected to the oil outlet 12. This is equivalent to setting up a dedicated separation area in the oil and gas flow path. When oil and gas enter the movable chamber 21 of the separation shield 2 from the oil outlet 12 of the separator body 1, the separation shield 2 can confine the separation process within a specific space, preventing the oil and gas from spreading randomly, which is beneficial to improving the separation effect. The buffer 3 is located inside the movable chamber 21 and is movably connected to the separation shield 2. When high-speed oil and gas enter the movable chamber 21 and impact the buffer 3, the buffer 3 can play a buffering role, reducing the flow rate and pressure of the oil and gas. On the one hand, the movable connection of the buffer 3 allows it to move or sway according to the impact force of the oil and gas. This dynamic buffering process can more effectively consume the kinetic energy of the oil and gas, making it easier for oil droplets in the oil and gas to separate from the gas due to loss of kinetic energy. On the other hand, the buffer 3 can also change the flow direction of the oil and gas, so that the oil and gas form a complex flow field in the movable cavity 21, increasing the chance of separation between oil droplets and gas, thereby avoiding a large number of oil droplets from being randomly splashed out of the oil-gas separator 100 with the gas and reducing the accumulation of oil.

[0025] In the embodiments of this application, the height direction is as follows: Figure 1 The Z direction is shown.

[0026] In optional embodiments, the present application does not limit the location of the oil outlet 12 on the separator body 1. For example, the oil outlet 12 may be located on the top or side of the separator body 1 along its height direction.

[0027] In an optional embodiment, the separator body 1 is further provided with an oil outlet channel 13, one end of which is provided with an oil outlet 12. The oil outlet channel 13 is at least partially located within the receiving cavity 11, and the other end of the oil outlet channel 13 is connected to the receiving cavity 11. The oil outlet channel 13 is used to guide oil and gas to be discharged to the oil outlet 12.

[0028] In optional embodiments, the locations of the inlet 22 and outlet 23 on the separation shield 2 are not limited. The inlet 22 may be located on the top, bottom, or side surface of the separation shield 2 along its own height direction. The outlet 23 may be located on the top, bottom, or side surface of the separation shield 2 along its own height direction.

[0029] In an optional embodiment, the buffer 3 is movably connected to the separation shield 2, and the buffer 3 can perform linear motion, multi-degree-of-freedom motion, rotational motion, etc., relative to the separation shield 2. When oil and gas are sprayed from the inlet 22 towards the buffer 3, the buffer 3 can initially buffer and disperse them, reducing their speed and momentum, thereby reducing the risk of direct oil spraying. The mobility of the buffer 3 can also be appropriately adjusted according to the pressure and speed of the oil injection to optimize its buffering effect. By placing the buffer 3 inside the separation shield 2, the diesel engine's oil-gas separator 100 can effectively reduce the phenomenon of oil being sprayed out with the gas at high speeds, protect the locomotive roof from oil contamination, keep the locomotive's appearance clean, and improve the locomotive's maintainability.

[0030] Please see Figure 1 In some embodiments, the separation shield 2 includes a connected sleeve portion 24, a movable portion 25, and a discharge portion 26. The sleeve portion 24, the movable portion 25, and the discharge portion 26 together form a movable cavity 21. The sleeve portion 24 has an inlet 22. The separation shield 2 is located in the movable portion 25 and is movably connected to the movable portion 25. The discharge portion 26 protrudes from the outside of the movable portion 25 and has an outlet 23. The sleeve portion 24 is used to fit onto the oil outlet 12 of the separator body 1, guiding the oil and gas exiting from the oil outlet 12 into the movable portion 25. The movable portion 25 is used to allow the buffer 3 to move. The discharge portion 26 protrudes from the outside of the movable portion 25 and is used to discharge the oil and gas outward. The discharge portion 26 increases the path length of the oil and gas within the separation shield 2, which helps to further reduce oil ejection with the gas.

[0031] This application embodiment does not limit the positions of the socket 24 and the guide portion 26 on the movable portion 25. For example, the socket 24 may be provided on the top surface or side surface of the movable portion 25 along its own height direction. The guide portion 26 may be provided on the bottom surface or side surface of the movable portion 25 along its own height direction.

[0032] In an optional embodiment, the inner circumference of the sleeve portion 24 is recessed with an annular groove. The separator cover 2 also includes a fastener disposed within the annular groove for sealing and securing the sleeve portion 24 and the oil outlet 12 of the separator body 1. The annular groove provides installation space for the fastener, allowing the separator cover 2 to be securely fixed to the oil outlet 12 while ensuring a tight seal between the two, preventing oil leakage. The use of the fastener ensures the stable installation of the separator cover 2. Even when the diesel engine is running at high speed, the separator cover 2 will not loosen or fall off due to vibration or injection pressure, ensuring the normal operation of the separator body 1, reducing the risk of oil leakage, and improving the reliability and maintainability of the separator.

[0033] Furthermore, the fastener is a clamp. The clamp is chosen as the fastener to connect the separator cover 2 and the oil outlet 12. The clamp provides uniform circumferential pressure, ensuring tight contact and sealing between the separator cover 2 and the oil outlet 12. Even under high-speed and high-pressure operating conditions of the diesel engine, good sealing is maintained, preventing oil leakage and improving the stability and reliability of the separator.

[0034] Please see Figure 1 In an optional embodiment, the movable part 25 may be in the shape of a cube or a sphere.

[0035] In an optional embodiment, the movable part 25 is cuboid in shape and includes a top wall, a bottom wall, and side walls. The top wall and bottom wall are disposed opposite each other along the height direction of the movable part 25, and the side walls are disposed between the top wall and the bottom wall. The sleeve part 24 is disposed on the side wall of the movable part 25, and the outlet part 26 is disposed on the bottom wall of the movable part 25. Distributing the outlet part 26 on the bottom wall of the movable part 25 facilitates the downward flow of oil, thereby facilitating its exit from the outlet 23 of the outlet part 26.

[0036] Please see Figure 1 In some embodiments, the inner diameter of the outlet portion 26 gradually decreases from one end near the movable portion 25 to the end away from the movable portion 25 along the liquid flow direction. The gradual decrease in the inner diameter of the outlet portion 26 allows it to guide the liquid flow and facilitates oil discharge.

[0037] Please see Figure 1In some embodiments, the inner wall of the outlet portion 26 has a first inclined surface 261 and a second inclined surface 262. The first inclined surface 261 and the second inclined surface 262 are arranged opposite to each other and spaced apart. The first inclined surface 261 faces the inlet 22, and the second inclined surface 262 faces away from the inlet 22. The outlet portion 26 has the first inclined surface 261 and the second inclined surface 262, which can provide a longer guide path for the oil. The first inclined surface 261 and the second inclined surface 262 are arranged opposite to each other, and the first inclined surface 261 faces the inlet 22, so that the first inclined surface 261 and the second inclined surface 262 can directly guide the oil, which facilitates the control of the oil flow path and reduces direct injection.

[0038] In this embodiment of the application, the liquid flow direction is as follows: Figure 1 Direction A is shown.

[0039] In some embodiments, the length of the first inclined plane 261 is greater than the length of the second inclined plane 262 along the liquid flow direction. The longer first inclined plane 261 provides a longer guiding path for the oil, helping to control the oil's flow trajectory and reducing the possibility of direct injection. Simultaneously, the longer first inclined plane 261 also provides a larger surface area, which is beneficial for further dispersing and buffering the high-speed injected oil, thereby optimizing its discharge process.

[0040] In some embodiments, the buffer 3 is provided with a groove 31, the opening of which faces the inlet 22. Providing a groove 31 on the buffer 3 increases the contact area between the buffer 3 and the oil, which helps to disperse and buffer the high-speed sprayed oil, reducing its spray.

[0041] In optional embodiments, the groove 31 can be shaped as a cube, sphere, or ellipsoid, etc. In other words, the groove wall surface of the groove 31 can be a plane, an arc surface, or an irregular curved surface, etc.

[0042] In some embodiments, the groove wall of the groove 31 is curved. This effectively disperses the impact force of the oil sprayed from the inlet 22, guides the oil flow, reduces oil rebound or splashing, and the curved surface can change the flow direction and speed of the oil, increasing the residence time of the oil in the movable cavity 21 of the separation shield 2 and improving the buffering efficiency.

[0043] In an optional embodiment, the arc surface includes a first arc surface 311 and a second arc surface 312 connected to each other. The first arc surface 311 faces the inlet 22 and the second arc surface 312 faces the outlet 23. The first arc surface 311 is used to buffer the oil sprayed from the inlet 22, and the second arc surface 312 is used to guide the oil to the outlet 23 for discharge, thereby reducing oil splashing.

[0044] Furthermore, along the height direction of the separator shield 2, the bottom end of the first arc surface 311 is flush with the bottom end of the inlet 22, which can better guide the oil onto the first arc surface 311. Along the height direction of the separator body 1, the top end of the first arc surface 311 is higher than the top end of the inlet 22, so that even under high-pressure oil injection, most of the oil will be intercepted by the first arc surface 311, reducing the possibility of direct spraying.

[0045] The buffer 3 includes a first arc surface 311 and a second arc surface 312. The second arc surface 312 is used to further disperse and guide the oil flow after initial buffering by the first arc surface 311, ensuring that the oil flows more evenly to the outlet 23 instead of directly impacting the inner wall of the separator shroud 2, thereby reducing direct oil spraying and splashing. The second arc surface 312 faces the outlet 23, meaning that the oil dispersed from the first arc surface 311 will be further guided towards the outlet 23 when it encounters the second arc surface 312. The second arc surface 312 can smoothly change the flow path of the oil, reducing its impact force and ensuring that the oil can be smoothly discharged through the outlet 23 without leaving a large amount of residue inside the separator shroud 2, reducing ineffective oil loss. The double arc design of the first arc surface 311 and the second arc surface 312 constitutes a continuous buffering and guiding system, allowing the oil sprayed from the inlet 22 to be more effectively discharged through the outlet 23 after two dispersions and redirections, while reducing the injection speed and pressure.

[0046] In some embodiments, the buffer 3 is slidably fitted onto the wall of the movable chamber 21, and the buffer 3 at least partially covers the outlet 23. When the buffer 3 can partially block the outlet 23, the movement of the buffer 3 can adjust the degree of blocking of the outlet 23 according to different injection pressures, thereby controlling the oil flow rate through the outlet 23. During high-pressure injection, the buffer 3 moves a larger distance, providing more buffer space for high-speed oil, blocking a smaller portion of the outlet 23, providing a larger flow path for the oil, avoiding local blockages that could affect the normal oil discharge process, and ensuring the efficient operation of the separator under different operating conditions.

[0047] In an alternative embodiment, the portion of the buffer 3 having a first arc surface 311 at least partially covers the outlet 23.

[0048] Please see Figure 1In some embodiments, the oil-gas separator 100 further includes an elastic element 4 located within the movable chamber 21, connected between the buffer element 3 and the chamber wall of the movable chamber 21. The elastic element 4 provides elasticity to the buffer element 3 near the inlet 22. This design ensures that even under high-pressure oil injection, the buffer element 3 maintains its positional stability, preventing it from deviating from its position due to excessive pressure, thus maintaining its function of buffering and dispersing oil. When oil is ejected at high speed from the inlet 22 and impacts the buffer element 3, the buffer element 3 will temporarily retract under force, but will then quickly return to its original position under the action of the elastic element 4. This dynamic response mechanism effectively disperses the impact force of the oil, reduces its speed, and thus improves buffering efficiency.

[0049] Please see Figure 1 In some embodiments, the inlet 22 and outlet 23 are located on the same side of the buffer 3, and the elastic member 4 is located on the opposite side of the buffer 3 away from the inlet 22. The inlet 22 and outlet 23 are designed to be on the same side of the buffer 3. After the oil is sprayed from the inlet 22, when the spray pressure and velocity are low, it can flow directly to the outlet 23 and be discharged through it. When the spray pressure and velocity are high, causing oil stains on the locomotive's exterior, the oil must first pass through the buffer area of ​​the buffer 3 before reaching the outlet 23. This arrangement maximizes the buffering effect of the buffer 3 on the sprayed oil, reduces direct oil spraying, lowers oil consumption, and reduces oil accumulation on the locomotive roof, maintaining the cleanliness of the locomotive's exterior.

[0050] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0054] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An oil-gas separator, characterized in that, include: The separator body has a receiving cavity and an oil outlet communicating with the receiving cavity; A separation protective cover is provided, the separation protective cover having a movable cavity and an inlet and an outlet communicating with the movable cavity, the inlet being connected to the oil outlet; A buffer element is located within the movable cavity and is movably connected to the separation protective cover.

2. The oil-gas separator according to claim 1, characterized in that, The buffer is provided with a groove, the opening of which faces the inlet.

3. The oil-gas separator according to claim 2, characterized in that, The groove wall is an arc surface.

4. The oil-gas separator according to claim 2, characterized in that, The buffer is slidably fitted onto the wall of the movable cavity, and the buffer at least partially covers the outlet.

5. The oil-gas separator according to claim 1, characterized in that, The oil-gas separator also includes an elastic element located within the movable cavity, which is connected between the buffer element and the cavity wall of the movable cavity.

6. The oil-gas separator according to claim 5, characterized in that, The inlet and the outlet are located on the same side of the buffer, and the elastic element is located on the other side of the buffer opposite to the inlet.

7. The oil-gas separator according to claim 1, characterized in that, The separation protective cover includes a connected sleeve, a movable part, and a discharge part. The sleeve, the movable part, and the discharge part together form the movable cavity. The sleeve has the inlet. The separation protective cover is located in the movable part and is movably connected to the movable part. The discharge part protrudes from the outside of the movable part and has the outlet.

8. The oil-gas separator according to claim 7, characterized in that, The inner diameter of the outlet gradually decreases from the end closest to the movable part to the end furthest from the movable part along the direction of liquid flow.

9. The oil-gas separator according to claim 8, characterized in that, The inner wall of the outlet has a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface are opposite to each other and spaced apart, the first inclined surface faces the inlet and the second inclined surface faces away from the inlet.

10. The oil-gas separator according to claim 9, characterized in that, Along the direction of liquid flow, the length of the first inclined plane is greater than the length of the second inclined plane.

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