An oil and gas separation sheet and an oil and gas separator

Abstract

The utility model discloses an oil and gas separation piece and oil and gas separator, oil and gas separation piece includes the disc of metal material, is provided with at least two staggered arrangement's gap formation structure on the disc, oil and gas separation disc piece has the inner surface and the outer surface of relative arrangement, gap formation structure forms the convex structure at the inner surface, and gap formation structure forms the groove structure at the outer surface, wherein, staggered arrangement shows: position exists deviation on the circumference and / or radial, when adjacent disc is stacked with the rotation of preset angle, the convex structure of upper layer disc and the outer surface of lower layer disc at least partial contact, and form separation gap between adjacent disc. The disc is stacked, and the technical problem that the disc between easy because disc end face flatness or structure design problem leads to too tight, uneven even disappears, causes the oil and gas separation efficiency low of existing disc has been solved.

Description

Technical Field

[0001] This utility model belongs to the field of automatic oil-gas separation technology, and more specifically, it relates to an oil-gas separation plate and an oil-gas separator. Background Technology

[0002] Oil-gas separators were first used in the early 19th century, but their application in automobile engines didn't begin until the 1960s, and research on oil-gas separation technology in China started even later. During this period, many researchers both domestically and internationally conducted research on separators, evolving from the initial experimental stage to the current research phase combining theory and experimentation. Currently, oil-gas separators come in various structural forms, but design standards and specifications are not standardized. Given the increasingly stringent requirements for separation efficiency, most researchers both domestically and internationally favor two-stage or multi-stage separators.

[0003] The working principle of an active centrifugal oil-gas separator is based on the formation of a rotating vortex within the separator by externally input energy. Particles in the mixed gas flow are separated under centrifugal force. A commonly used type is a conical active centrifugal separator, which has multiple conical discs mounted on its rotating shaft. Small holes are opened on the discs near the rotating shaft, serving as flow channels for the mixed gas. Each disc has a set of arc-shaped blades. When the rotating shaft moves, the mixed gas is thrown out along the annular space between the conical discs under centrifugal force, achieving oil-gas separation.

[0004] However, when existing discs operate in high-temperature environments, the plastic discs soften, and due to issues with the flatness of the disc end faces or structural design, the discs may adhere too tightly, resulting in uneven or even absent gaps, leading to low oil-gas separation efficiency. Furthermore, the manufacturing process for existing metal discs typically involves forming the disc surface first, and then welding separators onto it, which is complex and costly. Utility Model Content

[0005] To address the problem of low oil-gas separation efficiency caused by excessively tight adhesion, uneven or even absent gaps between existing discs during stacking, the purpose of this invention is to provide an oil-gas separation plate. The oil-gas separation plate comprises a metal disc with at least two staggered gap-forming structures. The oil-gas separation disc has opposing inner and outer surfaces. The gap-forming structures form protrusions or grooves on the inner surface and corresponding grooves or protrusions on the outer surface. The staggered arrangement is characterized by a circumferential and / or radial offset. When adjacent discs are stacked at a preset angle, the protrusions of the upper disc at least partially contact the outer surface of the lower disc, or the protrusions of the lower disc at least partially contact the inner surface of the upper disc, forming a separation gap between adjacent discs.

[0006] Compared with existing technologies, the technical effects achieved by this solution are as follows: Because the discs have at least two staggered gap-forming structures, when the discs are stacked at a relative rotational angle, the gap-forming structure of the upper disc will come into contact with the other gap-forming structure of the lower disc. However, since the gap-forming structures are staggered, the protrusions formed on the inner surface of the upper disc and the grooves formed on the outer surface of the lower disc cannot be completely fitted together. This results in at least partial contact between the protrusions of the upper disc and the outer surface of the lower disc, or at least partial contact between the protrusions of the lower disc and the inner surface of the upper disc, forming a uniform separation gap between adjacent discs. The staggered gap-forming structures ensure the uniformity and stability of the disc gaps, improving the oil-gas separation efficiency and reliability of the discs under high-temperature, high-speed engine oil-gas separation conditions.

[0007] It should be noted that, in pursuit of lightweight design, discs are often made very thin. Injection-molded plastic discs are prone to problems such as heat deformation, aging, even melting, and insufficient structural strength, leading to changes or disappearance of the gaps between discs, a sharp drop in separation efficiency, or even the risk of disc breakage. This application uses a metal disc, thus providing excellent high-temperature resistance and structural strength, resulting in higher separation efficiency, longer service life, and better reliability for the oil-gas separator. Furthermore, the raised and grooved structures forming the gap act as reinforcing ribs, further improving the structural strength of the disc while ensuring the uniformity and stability of the disc gaps.

[0008] Furthermore, the disc includes a bottom surface and a plate surface; the bottom surface includes a connecting ring and connecting ribs, the connecting ring has mounting holes, and multiple connecting ribs are spaced apart around the connecting ring, the connecting ring is connected to the plate surface through the connecting ribs; wherein, a hollow area is provided between two adjacent connecting ribs.

[0009] Compared with existing technologies, the technical effects achieved by this solution are as follows: the drive shaft drives the oil-gas separation discs to rotate through the mounting holes, and oil-gas separation is achieved through the centrifugal force of the rotation. The hollowed-out area forms the inlet for the gas-liquid mixture to enter the separation gap formed between the discs.

[0010] Furthermore, the gap-forming structure extends continuously from the disk surface to the connecting rib; wherein the gap-forming structure includes a first partition on the disk surface and a second partition on the connecting rib; wherein the first partition and the second partition are integrally formed.

[0011] Compared with existing technologies, the technical effects achieved by this solution are as follows: the first separator creates a separation gap between the surfaces of two adjacent discs when the discs are stacked; the second separator creates a separation gap between the bottom surfaces of two adjacent discs when the discs are stacked. By making the first and second separators an integrally formed structure, they can be machined onto the discs in a single stamping process during manufacturing, simplifying the production process, reducing manufacturing costs, and ensuring consistent product quality. By setting the gap-forming structure to extend continuously from the disc surface to the connecting rib, rather than bending, the flow can be guided and flow resistance reduced, resulting in smoother fluid flow. This helps improve the efficiency of centrifugal separation and may reduce flow noise.

[0012] Furthermore, the gap-forming structure includes at least two second partitions of different widths, and the second partitions of different widths are provided with hollow areas of different sizes.

[0013] Furthermore, the first partition extends from the outer edge of the disc surface to the connection between the disc surface and the connecting rib; wherein the first partition extends along the generatrix direction of the disc surface.

[0014] Compared with existing technologies, the technical advantages of this solution are as follows: the generatrix is ​​the shortest path between the inner and outer edges of the disk surface. By extending the first separator along the generatrix direction of the disk surface, the most direct and least-resistance flow channel is provided for the oil-gas mixture. The fluid does not need to flow through complex, tortuous paths, greatly reducing flow resistance and energy loss. If the separator were to extend in a curved or non-radial manner, it would force the fluid to change direction, easily generating eddies and turbulence. The straight channel along the generatrix direction avoids unnecessary flow disturbances, ensuring the stability and efficiency of the separation process.

[0015] Understandably, the core principle of centrifugal separation is to use the centrifugal force generated by high-speed rotation to throw out denser droplets. When the first separator forming the separation gap is arranged along the generatrix, the direction of motion of the fluid particles is highly consistent with the direction of the centrifugal force, thereby maximizing the use of centrifugal force, making the oil-gas separation process faster and more thorough, and thus significantly improving the oil-gas separation efficiency.

[0016] Furthermore, the first partition includes a first partition structure and a second partition structure; the first partition structure is a strip-shaped partition extending from the outer edge of the disc surface to the connection between the disc surface and the connecting rib, and the second partition structure includes at least one block-shaped partition disposed along the extending direction of the strip-shaped partition; wherein, for each gap forming structure, the distance between the block-shaped partition and the outer edge of the disc surface is different.

[0017] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting block-shaped separators on the strip-shaped separators, a composite structure of "main reinforcing ribs + secondary reinforcing ribs" can be formed, which greatly enhances the local stiffness and bending and torsional resistance of the long strip-shaped separators, effectively suppresses the harmful vibrations that may be generated during high-speed rotation, and ensures the stability of the separation gap.

[0018] Furthermore, the second partition structure includes two block partitions spaced apart along the extension direction of the strip partition; wherein the shape of the block partitions is rectangular; and the spacing between the two block partitions is different for each gap forming structure.

[0019] Compared with existing technologies, the technical advantages of this solution are as follows: multiple block-shaped separators provide multiple support points for the contact between the upper and lower discs, better ensuring the uniformity of the gap height across the entire contact surface and preventing the discs from warping due to uneven stress. Rectangles are among the easiest shapes to process, readily achievable with high precision during stamping, which is beneficial for mass production.

[0020] Furthermore, it also includes at least two reinforcing ribs, spaced apart around the periphery of the mounting hole.

[0021] Compared with existing technologies, the technical effects achieved by adopting this technical solution are: improving the structural strength of the periphery of the mounting hole and preventing deformation.

[0022] Furthermore, it also includes: a positioning component, which is set on the side of the connecting ring near the hollowed-out area and extends into the hollowed-out structure.

[0023] Compared with existing technologies, the technical effect achieved by this technical solution is that when discs are stacked in a rotating manner, the insertion direction of the discs can be identified and determined based on the position of the positioning component.

[0024] Furthermore, this utility model provides an oil-gas separator, which is formed by stacking any of the oil-gas separation plates as described above; wherein, the discs are provided with n kinds of staggered gap forming structures, and when the discs are stacked, the upper disc 100 is rotated 360 / n degrees relative to the lower disc before being inserted.

[0025] The technical effects and advantages of this utility model are as follows: 1. Because the discs have at least two staggered gap-forming structures, when the discs are stacked at a relative rotational angle, the gap-forming structure of the upper disc will come into contact with the other gap-forming structure of the lower disc. However, since the gap-forming structures are staggered, the protrusions and grooves between adjacent discs cannot be completely fitted. The protrusions of the upper disc are at least partially in contact with the outer surface of the lower disc, or the protrusions of the lower disc are at least partially in contact with the inner surface of the upper disc, thus forming a uniform separation gap between adjacent discs. In this way, the staggered gap-forming structures ensure the uniformity and stability of the disc gaps, improving the oil-gas separation efficiency and reliability of the discs in the high-temperature, high-speed engine oil-gas separation environment.

[0026] 2. In pursuit of lightweight design, discs are often made very thin. Injection-molded plastic discs are prone to problems such as heat deformation, aging, and even melting, as well as insufficient structural strength. This can lead to changes or disappearance of the gaps between discs, a sharp drop in separation efficiency, or even the risk of disc breakage. This application uses a metal disc, thus providing excellent high-temperature resistance and structural strength, resulting in higher separation efficiency, longer service life, and better reliability for the oil-gas separator. Furthermore, the raised and grooved structures in the gap-forming structure act as reinforcing ribs, further improving the structural strength of the disc while ensuring the uniformity and stability of the disc gaps.

[0027] 3. The generatrix is ​​the shortest path between the inner and outer edges of the disk surface. Setting the first separator along the generatrix direction provides the most direct and least-resistance flow channel for the oil-gas mixture. The fluid does not need to flow through complex, tortuous paths, greatly reducing flow resistance and energy loss. If the separator were to extend in a curved or non-radial manner, it would force the fluid to change direction, easily generating eddies and turbulence. A straight channel along the generatrix direction avoids unnecessary flow disturbances, ensuring the stability and efficiency of the separation process. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of an oil-gas separator provided by this utility model; Figure 2 yes Figure 1 Top view of the oil-gas separator; Figure 3 yes Figure 1 A schematic diagram of the stacking of oil-gas separator plates; Figure 4 This is a three-dimensional structural schematic diagram of another oil-gas separator provided by this utility model; Figure 5 yes Figure 4 Top view of the oil-gas separator; Figure 6 yes Figure 4 A schematic diagram of the stacking of oil-gas separator plates; Figure 7 yes Figure 1 Schematic diagram of the zoning of the oil-gas separator; Figure 8 yes Figure 1 Top view of the oil-gas separator Figure 2 ; Figure 9 yes Figure 8 AA section view; Figure 10 yes Figure 8 Enlarged view of point B in the middle; Figure 11 yes Figure 9 A magnified view of point C in the middle.

[0029] In the picture: 100. Disc; 10. Bottom surface; 11. Mounting hole; 12. Connecting ring; 13. Reinforcing rib; 14. Connecting rib; 15. Hollowed-out area; 16. Positioning component; 17. Guide surface; 20. Disc surface; 30. Gap forming structure; 31. First separator; 32. Second separator. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0031] See Figure 1 This is a three-dimensional structural schematic diagram of an oil-gas separator provided by this utility model. Combined with... Figures 1 to 11The oil-gas separator includes a metal disc 100. The disc 100 has at least two types of staggered gap-forming structures 30. Specifically, the oil-gas separator disc 100 includes an inner surface and an outer surface that are oppositely arranged. The gap-forming structure 30 forms a protrusion or a groove on the inner surface, and a corresponding groove or protrusion on the outer surface. For example, the gap-forming structure 30 forms a groove on the upper surface of the disc 100, and a corresponding protrusion on the lower surface of the disc 100. Alternatively, the gap-forming structure 30 may form a groove on the lower surface of the disc 100, and a corresponding protrusion on the upper surface of the disc 100; this is not a limitation.

[0032] When the discs 100 are stacked, the protruding structure of the upper disc 100 is at least partially in contact with the grooved structure of the lower disc 100, forming a separation gap between adjacent discs 100. This staggered arrangement ensures that when multiple discs 100 are stacked axially, the protruding structure of the upper disc 100 does not fall completely into the grooved structure of the lower disc 100, but rather contacts and supports the sidewall of the grooved structure or the flat area of ​​the outer surface of the lower disc 100, thereby forming a stable and uniform axial gap between adjacent discs 100. This axial separation gap is the key channel for the oil-gas mixture to pass through and undergo centrifugal separation. For example, the thickness of the disc 100 is 0.5 mm, and the size of the separation gap is 0.7 mm.

[0033] Furthermore, the disc 100 is provided with n staggered gap forming structures 30. When the discs 100 are stacked, the upper disc 100 is rotated relative to the lower disc 100 by a preset angle before being inserted; where the preset angle is 360 / n degrees. For example, during assembly and stacking, the first disc 100 is inserted at any angle; when installing the second disc 100, it is rotated 360 / n degrees around the central axis before being stacked with the first disc 100; when installing the third disc 100, it is again rotated 360 / n degrees relative to the second disc 100 before being stacked; when installing the fourth disc 100, it is again rotated 360 / n degrees relative to the third disc 100 before being stacked. At this time, the insertion angle of the (n+1)th disc 100 is the same as the insertion angle of the first disc 100. And so on.

[0034] Since the gap forming structure 30 is misaligned on the disc 100, when the discs 100 are stacked in a rotating manner, due to the offset in the circumferential and / or radial directions, or the dimensional deviation, the protrusion structure of the upper disc 100 and the groove structure of the lower disc 100 cannot be completely fitted together. Thus, stable support is achieved through the contact method of "protrusion to protrusion" or "wide face to narrow face", thereby forming a highly uniform separation gap between adjacent discs 100.

[0035] In one specific embodiment, the disc 100 is provided with three staggered gap forming structures 30. During assembly and stacking, the first disc 100 is inserted at any angle; when installing the second disc 100, it is rotated 120 degrees around the central axis before being stacked with the first disc 100; when installing the third disc 100, it is rotated 120 degrees relative to the second disc 100 before being stacked; when installing the fourth disc 100, it is rotated 120 degrees relative to the third disc 100 before being stacked. At this time, the insertion angle of the fourth disc 100 is the same as that of the first disc 100. And so on.

[0036] For example, the disc 100 includes a bottom surface 10 and a plate surface 20. A connecting ring 12 is located at the center of the bottom surface 10, and a hexagonal mounting hole 11 is formed in the center of the connecting ring 12. The mounting hole 11 cooperates with the drive shaft to achieve circumferential fixation and power transmission. The drive shaft drives the oil-gas separation disc 100 to rotate through the mounting hole 11, and oil-gas separation is achieved through the centrifugal force of rotation. Specifically, the plate surface 20 has a frustum-shaped structure.

[0037] The connecting ring 12 is connected to the disk surface 20 via multiple connecting ribs 14. The multiple connecting ribs 14 are spaced apart, and a hollow area 15 is provided between two adjacent connecting ribs 14. This hollow area 15 forms an inlet for the oil-gas mixture to enter the separation gap formed between the disks 100. Preferably, the hollow area 15 is partially formed on the disk surface 20.

[0038] In one specific embodiment, the gap forming structure 30 extends continuously from the disk surface 20 to the connecting rib 14. This gap forming structure 30 serves two purposes: firstly, it creates a separation gap between adjacent disks 100; secondly, it acts as a reinforcing rib to improve the structural strength of the disk surface 20 and the connecting rib 14, preventing deformation of the connecting rib 14 and the disk surface 20 during high-speed rotation at high temperatures, which could lead to uneven or even absent separation gaps between the disks 100, affecting separation efficiency. The disks 100 are made of metal, preferably aluminum.

[0039] It should be noted that oil-gas separators are often located near exhaust pipes and turbochargers, operating under high temperatures for extended periods. This makes the plastic discs 100 susceptible to thermal deformation, aging, and even melting. This can lead to changes or disappearance of the gaps between the discs 100, a sharp decline in separation efficiency, and even the failure of the entire separator. Furthermore, in pursuit of lightweight design, the discs 100 are often made very thin. The plastic material has poor creep resistance and impact resistance, and may break under high-speed rotation due to insufficient structural strength. Therefore, the plastic discs 100 exhibit significant disadvantages, including insufficient high-temperature resistance and poor structural strength.

[0040] This application sets the disc 100 to be made of aluminum, which can achieve a perfect combination of lightweight, high strength and excellent high temperature resistance, so that the oil-gas separator has higher separation efficiency, longer service life and better reliability.

[0041] Furthermore, the gap forming structure 30 includes a first separator 31 located on the disk surface 20 and a second separator 32 located on the connecting rib 14. The first separator 31 is capable of forming a separation gap between the disk surfaces 20 of two adjacent disks 100 when the disks 100 are stacked; the second separator 32 is capable of forming a separation gap between two adjacent disks 100 when the disks 100 are stacked.

[0042] Furthermore, a reinforcing rib 13 is provided on the side of the connecting ring 12 near the mounting hole 11, and the reinforcing rib 13 is distributed around the mounting hole 11; the reinforcing rib 13 forms a protruding structure on the upper end surface of the disc 100, and a groove structure on the lower end surface of the reinforcing rib 13. In a specific embodiment, the mounting hole 11 is hexagonal in shape, and three evenly distributed reinforcing ribs 13 are provided on the side of the connecting ring 12 near the mounting hole 11. For example, the reinforcing rib 13 includes an integrally formed long side and a short side bent and connected to both ends of the long side, with a gap between the short sides of two adjacent reinforcing ribs 13. For example, the ends of the reinforcing rib 13 and the bent connection between the short and long sides are rounded to avoid stress concentration.

[0043] When the discs 100 are stacked in a manner that rotates 120 degrees sequentially, the three reinforcing ribs 13 of two adjacent discs 100 are aligned.

[0044] Furthermore, a positioning element 16 is also provided on the bottom surface 10. When the discs 100 are stacked in a rotating manner, the insertion direction of the discs 100 can be identified and determined according to the position of the positioning element 16.

[0045] For example, the positioning element 16 is a protrusion located on the side of the connecting ring 12 near the hollowed-out area 15. When the discs 100 are stacked in a manner that rotates 120 degrees sequentially, a 120-degree angle is formed between the positioning elements 16 of two adjacent discs 100. For example, the ends of the positioning elements 16 and the connection between the positioning elements 16 and the connecting ring 12 are rounded to avoid stress concentration.

[0046] For example, the gap forming structure 30 is a partition strip extending from the disk surface 20 to the connecting rib 14. A guide surface 17 is also provided between the end of the gap forming structure 30 and the outer edge of the disk surface 20.

[0047] In one specific embodiment, the dividing strip has two rectangular dividers along its length. Depending on the different spacing D between the two rectangular dividers, three different gap-forming structures 30 are formed. In this embodiment, the disk surface 20 is divided into three identical 120-degree sector areas, i.e., three dividing zones. The spacings D1, D2, and D3 between the rectangular dividers on the dividing strip are all different.

[0048] For example, there are twelve evenly distributed dividers on disc 100, with four dividers in each of the three divided zones. In zone one, the four dividers have a spacing of D1 between the two rectangular dividers; in zone two, the four dividers have a spacing of D2 between the two rectangular dividers; and in zone three, the four dividers have a spacing of D3 between the two rectangular dividers. Where D1 > D2 > D3.

[0049] In one specific embodiment, twelve dividing strips are evenly distributed on the disc 100, dividing the disc into four sections. Each section contains a first dividing strip, a second dividing strip, and a third dividing strip of different widths. The width of the first dividing strip is W1, the width of the second dividing strip is W2, and the width of the third dividing strip is W3, where W1 < W2 < W3. Furthermore, the dividing strips extend continuously from the outer edge of the disc surface 20 to the connecting rib 14. For example, the twelve dividing strips are arranged sequentially on the disc 100 in the order of first width, second width, third width, first width, ...

[0050] For example, the width W1 of the first partition strip is 3.2mm; the width W2 of the second partition strip is 3.3mm; and the width W3 of the third partition strip is 3.5mm. The width of the connecting rib where the first partition strip is located is 5.2mm; the width of the connecting rib where the second partition strip is located is 5.2mm; and the width of the connecting rib where the third partition strip is located is 5.5mm.

[0051] Furthermore, the hollowed-out area 15 between two adjacent connecting ribs 14 also has three sizes, so that when the discs 100 are stacked, the hollowed-out area 15 is also staggered in the circumferential and / or radial directions, thereby further improving the oil-gas separation effect.

[0052] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to 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 utility model.

[0053] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An oil-gas separator, characterized in that, The oil-gas separator includes a metal disc with at least two staggered gap-forming structures. The oil-gas separator disc has an inner surface and an outer surface that are oppositely arranged. The gap-forming structures form a protrusion or groove on the inner surface and a corresponding groove or protrusion on the outer surface. The staggered arrangement is characterized by a position offset in the circumferential and / or radial directions. When adjacent discs are stacked at a preset angle, the protrusion of the upper disc is at least partially in contact with the outer surface of the lower disc or the protrusion of the lower disc is at least partially in contact with the inner surface of the upper disc, and a separation gap is formed between adjacent discs.

2. The oil-gas separator according to claim 1, characterized in that, The disc includes a bottom surface and a plate surface; the bottom surface includes a connecting ring and connecting ribs, the connecting ring has mounting holes, and multiple connecting ribs are spaced apart around the connecting ring, the connecting ring is connected to the plate surface through the connecting ribs; wherein, a hollow area is provided between two adjacent connecting ribs.

3. The oil-gas separator according to claim 2, characterized in that, The gap forming structure extends continuously from the disk surface to the connecting rib; wherein the gap forming structure includes a first partition on the disk surface and a second partition on the connecting rib; wherein the first partition and the second partition are integrally formed.

4. The oil-gas separator according to claim 3, characterized in that, The gap-forming structure includes: at least two second partitions of different widths, and a hollow area of ​​different size is provided between the second partitions of different widths.

5. The oil-gas separator according to claim 3, characterized in that, The first separator extends from the outer edge of the disc to the junction of the disc and the connecting rib; wherein the first separator extends along the generatrix of the disc.

6. The oil-gas separator according to claim 3, characterized in that, The first partition includes a first partition structure and a second partition structure; the first partition structure is a strip-shaped partition extending from the outer edge of the disc surface to the connection between the disc surface and the connecting rib, and the second partition structure includes at least one block-shaped partition disposed along the extending direction of the strip-shaped partition; wherein, for each gap forming structure, the distance between the block-shaped partition and the outer edge of the disc surface is different.

7. The oil-gas separator according to claim 6, characterized in that, The second partition structure includes two block partitions spaced apart along the extension direction of the strip partition; wherein the shape of the block partitions is rectangular; and the spacing between the two block partitions is different for each type of gap forming structure.

8. The oil-gas separator according to claim 2, characterized in that, Also includes: At least two reinforcing ribs are spaced apart around the mounting hole.

9. The oil-gas separator according to claim 2, characterized in that, Also includes: The positioning component is located on the side of the connecting ring near the hollowed-out area and extends into the hollowed-out structure.

10. An oil-gas separator, characterized in that, The oil-gas separator is formed by stacking oil-gas separation plates as described in any one of claims 1-9; wherein, the discs are provided with n kinds of staggered gap forming structures, and when the discs are stacked, the upper disc is rotated 360 / n degrees relative to the lower disc before being inserted.

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