Oil and gas separation device

Abstract

The oil-gas separation device comprises an oil-gas barrel, a lining barrel and an oil separation core. The oil-gas barrel comprises a barrel body and a barrel cover. An opening is arranged on the upper end of the barrel body, and the barrel cover is arranged on the upper end of the barrel body to close the opening. The lining barrel is arranged in the oil-gas barrel and comprises a cylinder body, a baffle and a partition plate. The cylinder body is connected with the oil-gas barrel, and the axis of the cylinder body is parallel to the axis of the barrel body. The baffle is connected with the lower end of the cylinder body. The baffle is ring-shaped and has a central hole. In the direction from the outer periphery to the center, the baffle is arranged in a conical surface shape which is inclined downward. The partition plate is connected with the inner wall of the cylinder body and is arranged above the baffle. The part of the cylinder body between the baffle and the partition plate is provided with a plurality of primary holes. The oil separation core is arranged in the oil-gas barrel and partially located in the cylinder body. The oil separation core is arranged on the upper surface of the partition plate.

Description

Technical Field

[0001] This disclosure relates to the field of compressor technology, and more particularly to an oil-gas separation device. Background Technology

[0002] Oil-gas separators are used to separate lubricating oil and compressed gas. Existing oil-gas separators have large barrel weights and diameters, resulting in high manufacturing costs and low oil-gas separation efficiency. During maintenance, because the oil separator core is installed in the liner, the entire barrel cover, valve body, and pipeline assembly on the cover need to be disassembled to replace the oil separator core, causing high labor intensity for service personnel and long maintenance time. Summary of the Invention

[0003] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art and to provide an oil-gas separation device with high oil-gas separation efficiency.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to one aspect of this disclosure, an oil-gas separation device is provided, comprising an oil-gas tank, a liner, and an oil separator core; the oil-gas tank includes a tank body and a tank cover; an opening is provided at the upper end of the tank body, and the tank cover is installed at the upper end of the tank body to close the opening; the liner is disposed inside the oil-gas tank and includes a cylinder, a baffle, and a partition; the cylinder is connected to the oil-gas tank, and its axis is parallel to the axis of the tank body; the baffle is connected to the lower end opening of the cylinder; the baffle is annular and has a central hole, and the baffle is a conical surface arranged downwardly inclined from the outer periphery to the center; the partition is connected to the inner wall of the cylinder and is spaced above the baffle; the oil separator core is disposed inside the oil-gas tank and partially located inside the cylinder, and the oil separator core is installed on the upper surface of the partition.

[0006] According to one embodiment of this disclosure, the ratio of the height of the oil and gas tank to the height of the liner is 1.2 to 4; and / or the ratio of the inner diameter of the tank body to the outer diameter of the liner is 1.1 to 3.

[0007] According to one embodiment of this disclosure, the portion of the cylinder between the baffle and the partition is provided with a plurality of initial dividing holes.

[0008] According to one embodiment of this disclosure, in the portion of the cylinder between the baffle and the partition, the opening ratio of the initial dividing hole is 12% to 25%; and / or, the diameter of the initial dividing hole is 5mm to 15mm.

[0009] According to one embodiment of this disclosure, the plurality of initial dividing holes are arranged in multiple rows with vertical spacing; wherein: the initial dividing holes in adjacent rows are arranged in alignment; or, the initial dividing holes in adjacent rows are arranged in an alternating manner.

[0010] According to one embodiment of this disclosure, the diameter of the central hole of the baffle is 40mm to 250mm; and / or, the angle of inclination of the baffle relative to the horizontal plane is greater than or equal to 10°.

[0011] According to one embodiment of this disclosure, the ratio of the distance between the baffle and the partition to the height of the liner is 0.3 to 0.5; and / or the ratio of the height of the portion of the liner above the partition to the height of the liner is 0.5 to 0.7.

[0012] According to one embodiment of this disclosure, a first flange is provided on the upper outer periphery of the barrel body, and a second flange is provided on the lower outer periphery of the barrel cover; an outwardly extending flange is provided on the upper periphery of the barrel body, the flange being disposed between the first flange and the second flange, and the first flange, the second flange, and the flange being fixedly connected.

[0013] According to one embodiment of this disclosure, the upper surface of the partition is provided with an oil collection trough; the oil-gas separation device further includes an oil return pipe disposed in the oil-gas tank, the lower end of the oil return pipe extends into the oil collection trough and the upper end extends out of the tank cover, the oil collection trough is circular and its corresponding circle diameter is 50mm to 100mm.

[0014] According to one embodiment of the present disclosure, the partition is provided with an assembly hole (232), which is a receiving structure, and the lower end of the oil separator core is disposed in the receiving structure of the assembly hole (232); the receiving structure may be a through hole opened on the partition 230; and / or the receiving structure may be a tubular structure in which the assembly hole (232) extends to the lower or upper part of the partition (230).

[0015] According to one embodiment of this disclosure, the barrel cover is provided with an openable or removable operating cover, the position of which corresponds to the position of the oil separator core.

[0016] According to one embodiment of this disclosure, the oil-gas separation device includes at least two oil separator cores arranged at circumferential intervals; wherein the number of operating covers is the same as the number of oil separator cores and they are arranged in a one-to-one correspondence.

[0017] According to one embodiment of this disclosure, the lower end of the baffle is flush with the highest oil level in the oil and gas tank.

[0018] According to one embodiment of this disclosure, the oil-gas separation device further includes an oil level stabilizing plate; the oil level stabilizing plate is connected to the inner wall of the barrel and is located at a distance below the liner, and the oil level stabilizing plate is provided with through holes; the highest oil level in the oil-gas barrel is located below the oil level stabilizing plate.

[0019] According to one embodiment of this disclosure, the barrel body is provided with an upper oil level sight glass and a lower oil level sight glass arranged at intervals; wherein, the oil level stabilizing plate is located between the upper oil level sight glass and the lower oil level sight glass.

[0020] According to one embodiment of this disclosure, in the height direction, the oil level stabilizing plate is arranged adjacent to the upper oil level sight relative to the lower oil level sight.

[0021] According to one embodiment of this disclosure, the distance between the oil level stabilizing plate and the baffle is 50mm to 500mm; and / or, the ratio of the distance between the oil level stabilizing plate and the bottom of the oil and gas tank to the height of the oil and gas tank is 0.25 to 0.5.

[0022] According to one embodiment of this disclosure, the oil level stabilizing plate includes a conical portion and an annular portion; the conical portion is arranged in an upwardly inclined conical shape in the direction from the outer periphery to the center; the inner periphery of the annular portion is connected to the outer periphery of the conical portion, and the outer periphery of the annular portion is connected to the inner wall of the barrel; the through hole is provided in the annular portion.

[0023] According to one embodiment of this disclosure, the ratio of the diameter of the conical portion to the diameter of the oil level stabilizing plate is 0.5 to 0.9; and / or, the inclination angle of the conical portion relative to the horizontal plane is 10° to 45°; and / or, on the annular portion, the opening ratio of the through hole is 15% to 30%; and / or, the diameter of the through hole is 10 mm to 30 mm.

[0024] According to one embodiment of this disclosure, the oil-gas separator includes an inlet pipe connected to the oil-gas tank, wherein the axis of the inlet pipe extends tangentially along the oil-gas tank at the location where the oil-gas tank is connected to the inlet pipe; wherein the inlet pipe connects to the portion of the tank body corresponding to the liner; or, the oil-gas separator further includes an oil level stabilizing plate, the oil level stabilizing plate being connected to the inner wall of the tank body and spaced below the liner, the oil level stabilizing plate being provided with through holes; wherein the inlet pipe connects to the area of ​​the tank body between the liner and the oil level stabilizing plate.

[0025] As can be seen from the above technical solution, the advantages and positive effects of the oil-gas separation device proposed in this disclosure are as follows:

[0026] The oil-gas separation device disclosed herein includes an oil-gas tank, a liner, and an oil separator core. The oil-gas tank includes a tank body and a tank cover; the tank cover is installed on the upper part of the tank body. The liner is disposed inside the oil-gas tank and includes a cylinder, a baffle, and a partition. The cylinder is connected to the oil-gas tank. The baffle is connected to the lower end of the cylinder. The baffle is annular and has a central hole, and the baffle is a conical surface arranged at a downward inclination. The partition is connected to the inner wall of the cylinder and is spaced above the baffle. The oil separator core is installed on the upper surface of the partition. Through the above design, utilizing the inclined arrangement of the baffle, this disclosure facilitates the flow of separated oil to the bottom of the oil-gas tank, and also reduces the amount of oil at the bottom of the oil-gas tank being flushed upwards by the compressed airflow, thereby stabilizing the oil level and improving the oil-gas separation efficiency. Furthermore, it allows for a reduction in the diameter and weight of the oil-gas tank. Furthermore, this disclosure utilizes the baffle plate of the liner to install the oil separator core, integrating the installation of the oil separator core and the oil-gas separation function into a single liner. This helps reduce the number of parts in the oil-gas separation device and lowers the manufacturing difficulty and cost of the oil-gas separation device.

[0027] In one embodiment of this disclosure, the portion of the cylinder between the baffle and the partition is provided with a plurality of initial separation holes. Accordingly, this disclosure provides a large space for the arrangement of the initial separation holes, which facilitates the entry of compressed gas into the inner side of the liner through the initial separation holes during the cyclone separation process, while blocking the lubricating oil on the outer side of the liner, thereby improving the oil-gas separation efficiency. Attached Figure Description

[0028] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0029] Figure 1 This is a perspective view of an oil-gas separation device according to an exemplary embodiment;

[0030] Figure 2 yes Figure 1 A side view of the oil-gas separation unit is shown.

[0031] Figure 3 It is along Figure 2 A cross-sectional view of line AA in the diagram;

[0032] Figure 4 yes Figure 3 A three-dimensional view of the cross-sectional structure is shown;

[0033] Figure 5 yes Figure 1 A top view of the oil-gas separation unit shown;

[0034] Figure 6 yes Figure 1 A top view showing a portion of the structure of the oil-gas separation unit;

[0035] Figure 7 and Figure 8 They are Figure 3 The liner shown is a three-dimensional view from two different perspectives;

[0036] Figure 9 yes Figure 7 The top view of the liner barrel is shown;

[0037] Figure 10 It is along Figure 9 A cross-sectional view of line BB in the diagram;

[0038] Figure 11 yes Figure 10 A three-dimensional view of the cross-sectional structure is shown.

[0039] The annotations in the attached figures are explained as follows:

[0040] 100. Oil and gas tank; 211. Flanged edge; α. Inclination angle;

[0041] 110. Barrel body; 220. Baffle; β. Inclined angle;

[0042] 111. First flange; 2201. Center hole; d1. Inner diameter;

[0043] 112. Upper oil immersion lens; 230. Septum; d2. Outer diameter;

[0044] 113. Lower oil immersion lens; 231. Oil collection groove; d3. Diameter;

[0045] 120. Bucket lid; 232. Assembly hole; h1. Height;

[0046] 121. Second flange; 300. Oil return pipe; h2. Height;

[0047] 122. Operating cover; 400. Oil level stabilizer plate; h3. Distance;

[0048] 130. Intake pipe; 401. Through hole; h4. Height;

[0049] 200. Liner; 410. Conical section; h5. Distance;

[0050] 201. Initial dividing hole; 420. Annular section; h6. Distance.

[0051] 210. Cylinder body; Detailed Implementation

[0052] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are illustrative in nature and not intended to limit this disclosure.

[0053] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0054] See Figure 1 The illustration shows a perspective view of the oil-gas separation device proposed in this disclosure. In this exemplary embodiment, the oil-gas separation device proposed in this disclosure is described using a micro air screw compressor as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to apply the relevant designs of this disclosure to other types of air compressors or other refrigerant compressors, and these changes are still within the scope of the principles of the oil-gas separation device proposed in this disclosure.

[0055] like Figure 1 As shown, in one embodiment of this disclosure, the oil-gas separation device includes an oil-gas tank 100, a liner 200, and an oil separator core (not shown in the accompanying drawings). See also... Figures 2 to 11 , Figure 2 The image shows a representative side view of an oil-gas separation unit; Figure 3 The middle section represents the direction along Figure 2 A cross-sectional view of line AA in the diagram; Figure 4 China representatively shows Figure 3 A three-dimensional view of the cross-sectional structure is shown; Figure 5 The image shows a top view of a typical oil-gas separation unit; Figure 6 The image shows a top view of a portion of the structure of the oil-gas separator, with specific details such as the barrel cover 120 omitted. Figure 7 and Figure 8 The images show representative perspective views of the liner 200 from two different viewpoints. Figure 9The top view of the liner 200 is shown in the image. Figure 10 The middle section represents the direction along Figure 9 A cross-sectional view of line BB in the diagram; Figure 11 China representatively shows Figure 10 The figure shows a perspective view of the cross-sectional structure. The structure, connection method, and functional relationship of the main components of the oil-gas separation device proposed in this disclosure will be described in detail below with reference to the above figures.

[0056] like Figures 1 to 4 As shown, in one embodiment of this disclosure, the oil and gas tank 100 includes a tank body 110 and a tank cover 120. An opening is provided at the upper end of the tank body 110, and the tank cover 120 is installed at the upper end of the tank body 110 to close the opening at the upper end of the tank body 110. A liner 200 is disposed inside the oil and gas tank 100, and the liner 200 includes a cylinder 210, a baffle 220, and a partition 230. The cylinder 210 is connected to the oil and gas tank 100, and the axis of the cylinder 210 is parallel to the axis of the tank body 110. The baffle 220 is connected to the lower end opening of the cylinder 210. The baffle 220 is annular and has a central hole 2201. The baffle 220 is a conical surface arranged downwards in the direction from the outer periphery to the center. In other words, the baffle 220 is conical, and the middle part of the baffle 220 protrudes downwards. A baffle 230 connects to the inner wall of the cylinder 210 and is spaced above the baffle 220. The portion of the cylinder 210 between the baffle 220 and the baffle 230 has multiple initial separation holes 201. An oil separator core is disposed within the oil-gas tank 100 and partially within the cylinder 210, and is mounted on the upper surface of the baffle 230. Through this design, utilizing the inclined arrangement of the baffle 220, the present invention facilitates the flow of separated oil to the bottom of the oil-gas tank 100, and also prevents the oil at the bottom of the oil-gas tank 100 from being swept upwards by the compressed airflow, thereby stabilizing the oil level, improving oil-gas separation efficiency, reducing the diameter of the oil-gas tank 100, and lightening its weight. In addition, this disclosure utilizes the partition plate 230 of the liner 200 to install the oil separator core, integrating the installation of the oil separator core and the oil-gas separation function into a single liner 200, which helps to reduce the number of parts in the oil-gas separation device and reduce the manufacturing difficulty and cost of the oil-gas separation device.

[0057] like Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, in one embodiment of this disclosure, the portion of the cylinder 210 between the baffle 220 and the partition 230 may be provided with a plurality of initial separation holes 201. Through the above design, this disclosure utilizes the portion of the liner 200 between the baffle 220 and the partition 230 to provide initial separation holes 201, leaving ample space for the arrangement of the initial separation holes 201. This facilitates the entry of compressed gas into the inner side of the liner through the initial separation holes 201 during the cyclone separation process, while blocking lubricating oil on the outer side of the liner, thereby improving the oil-gas separation efficiency.

[0058] like Figure 3 As shown, in one embodiment of this disclosure, based on the design requirement that the lower end of the cylinder 210 avoids the highest oil level, the ratio of the height h1 of the oil-gas separator 100 to the height h2 of the liner 200 can be 1.2 to 4, for example, 1.5, 1.6, 1.8, 2, 2.1, 2.5, 2.7, 2.9, 3, 3.1, 3.5, 3.7, 3.9, 4, etc., to improve oil-gas separation efficiency. In other embodiments of this disclosure, to adapt to different oil level design requirements, the ratio of the height h1 of the oil-gas separator 100 to the height h2 of the liner 200 can also be less than 1.5 or greater than 3, for example, 1.4, 3.1, etc., and is not limited to this embodiment.

[0059] like Figure 3 As shown, in one embodiment of this disclosure, based on the design requirements of the oil-gas separation space, the ratio of the inner diameter d1 of the barrel 110 to the outer diameter d2 of the liner 200 can be 1.1 to 3, for example, 1.1, 1.2, 1.5, 1.7, 1.9, 2, 2.1, 2.2, 2.5, 2.7, 2.9, 3, etc., to improve the oil-gas separation efficiency. In other words, the inner wall of the barrel 110 and the outer wall of the liner 200 are spaced apart and have gaps. Taking the axis of the oil and gas barrel 100 and the axis of the liner 200 as coincident, that is, taking the gap as uniform in width in the circumferential direction as an example, the ratio of the gap width to the outer diameter d2 of the liner 200 (or the ratio to the inner diameter d1 of the barrel 110) can be calculated. For example, if the gap width is half of the difference between the inner diameter d1 of the barrel 110 and the outer diameter d2 of the liner 200, then the ratio of the gap width to the outer diameter d2 of the liner 200 can be 0.1 to 1, such as 0.1, 0.2, 0.4, 0.5, 0.8, 1, etc.

[0060] Furthermore, the ratio of the inner diameter d1 of the barrel body 110 to the outer diameter d2 of the liner barrel 200 can be specifically 1.12 to 1.5, such as 1.12, 1.15, 1.18, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, etc.

[0061] In one embodiment of this disclosure, in the portion of the cylinder 210 between the baffle 220 and the partition 230, the opening ratio of the initial separation orifice 201 can be 12% to 25%, for example, 12%, 15%, 18%, 20%, 22%, 25%, etc., according to the design requirements for oil blocking efficiency and compressed gas pressure maintenance, in order to improve oil-gas separation efficiency and reduce compressed gas pressure loss. The higher the opening ratio of the initial separation orifice 201, the higher the oil blocking efficiency. Therefore, the opening ratio of the initial separation orifice 201 can be reduced to increase the oil content at the compressed gas outlet, and the opening ratio of the initial separation orifice 201 can be increased to reduce the oil content at the compressed gas outlet.

[0062] It should be noted that the initial dividing holes 201 shown in the accompanying drawings are arranged in an array-like distribution. Specifically, the multiple initial dividing holes 201 are arranged in multiple groups, with multiple initial dividing holes 201 in the same group arranged at intervals along the circumference, and multiple groups arranged at intervals along the axial direction. The number and position of the initial dividing holes 201 in the multiple groups are the same, thus forming multiple columns of initial dividing holes 201 arranged at intervals along the axial direction. Each column includes one initial dividing hole 201 from each group. It should be understood that in other embodiments of this disclosure, the initial dividing holes 201 may also be arranged in other forms. For example, the multiple initial dividing holes 201 may still be arranged in multiple groups, but the initial dividing holes 201 in adjacent groups may be staggered circumferentially, and this is not limited to this embodiment.

[0063] In one embodiment of this disclosure, based on the design requirements for oil blocking efficiency and compressed gas pressure maintenance, the aperture of the initial separating orifice 201 can be 5mm to 15mm, for example, 5mm, 6mm, 8mm, 9mm, 11mm, 13mm, 15mm, etc., to improve oil-gas separation efficiency. The smaller the aperture of the initial separating orifice 201, the higher the oil blocking efficiency. Therefore, the aperture of the initial separating orifice 201 can be reduced to decrease the oil content at the compressed gas outlet, and the opening ratio of the initial separating orifice 201 can be increased to improve the oil content at the compressed gas outlet.

[0064] Furthermore, the diameter of the initial dividing hole 201 can be specifically 10mm.

[0065] like Figure 3 , Figure 7 and Figure 8 As shown, in one embodiment of this disclosure, the multiple initial dividing holes 201 provided in the cylinder 210 can be arranged in multiple rows with vertical spacing. Furthermore, adjacent rows of initial dividing holes 201 can be arranged in a one-to-one alignment. In other embodiments of this disclosure, depending on different flow field designs, adjacent rows of initial dividing holes 201 can also be arranged in a staggered manner, and are not limited to this embodiment.

[0066] In one embodiment of this disclosure, based on the design requirements for the oil content at the compressed gas outlet, the diameter of the central hole 2201 of the baffle 220 can be 40mm to 250mm, for example, 40mm, 50mm, 70mm, 90mm, 120mm, 150mm, 180mm, 200mm, 218mm, 220mm, 250mm, etc., to reduce the oil content at the compressed gas outlet. In practical applications, a small amount of compressed gas will enter the liner 200 through the central hole 2201. Therefore, the diameter of the central hole 2201 can be reduced to decrease the oil content at the compressed gas outlet, and the diameter of the central hole 2201 can be increased to increase the oil content at the compressed gas outlet.

[0067] Furthermore, the diameter of the center hole 2201 can be specifically 88mm.

[0068] like Figure 3 As shown, in one embodiment of this disclosure, based on the design requirements for oil blocking and drainage efficiency, the inclination angle α of the baffle 220 relative to the horizontal plane can be greater than or equal to 10°. Furthermore, since the baffle 220 is a cone-shaped structure arranged with a downward inclination, the aforementioned inclination angle α is less than 90°, such as 10°, 15°, 30°, 45°, 60°, 75°, 90°, etc.

[0069] like Figure 3 As shown, in one embodiment of this disclosure, based on the design requirements of oil blocking efficiency and the distribution of initial separation holes 201, the ratio of the distance h3 between the baffle 220 and the partition 230 to the height h2 of the liner 200 can be 0.3 to 0.5, for example, 0.3, 0.35, 0.375, 0.4, 0.45, 0.5, etc.

[0070] like Figure 3 As shown, in one embodiment of this disclosure, the ratio of the height h4 of the portion of the liner 200 above the partition 230 to the height h2 of the liner 200 can be 0.5 to 0.7, for example, 0.5, 0.55, 0.6, 0.625, 0.65, 0.7, etc., to accommodate the installation space of oil separator cores of different sizes, depending on the installation requirements of the oil separator core.

[0071] like Figures 1 to 4 , Figure 7 and Figure 8As shown, in one embodiment of this disclosure, a first flange 111 may be provided on the upper outer periphery of the barrel body 110, and a second flange 121 may be provided on the lower outer periphery of the barrel cover 120. An outwardly extending flange 211 may be provided on the upper periphery of the barrel body 210, and the flange 211 is disposed between the first flange 111 and the second flange 121, with the first flange 111, the second flange 121, and the flange 211 fixedly connected. Through the above design, this disclosure utilizes the first flange 111 and the second flange 121 to achieve the installation of the barrel body 110 and the barrel cover 120, and simultaneously utilizes the flange 211 to achieve the installation of the liner 200 within the oil and gas tank 100, which has advantages such as simple structure, convenient assembly, and reliable connection. In other embodiments of this disclosure, the barrel body 110 and the liner 200 may also be an integral structure, and are not limited to this embodiment.

[0072] like Figure 3 , Figure 4 , Figures 6 to 11 As shown, in one embodiment of this disclosure, an oil collection trough 231 may be provided on the upper surface of the partition 230. The oil-gas separation device proposed in this disclosure also includes a return oil pipe 300 disposed within the oil-gas tank 100, with its lower end extending into the oil collection trough 231 and its upper end extending out of the tank cover 120. Through the above design, this disclosure can utilize the oil collection trough 231 to collect lubricating oil and utilize the return oil pipe 300 to transport the lubricating oil collected in the oil collection trough 231 to the outside of the oil-gas separation device. Accordingly, in addition to the installation of the oil separator core and the oil-gas separation function, this disclosure further integrates the oil collection function on the partition 230, further reducing the number of components in the oil-gas separation device and further reducing the manufacturing difficulty and cost of the oil-gas separation device.

[0073] like Figure 6 As shown, based on the design of the partition 230 with an oil collection groove 231, in one embodiment of this disclosure, the oil collection groove 231 can be set at the center of the partition 230, thereby optimizing the oil collection effect of the oil collection groove 231 and facilitating the arrangement of multiple oil separator cores (i.e., assembly holes 232).

[0074] like Figure 6 As shown, based on the design of the oil collection groove 231 provided on the partition 230, in one embodiment of this disclosure, according to the design requirements of different sizes of the cylinder 210, the oil collection groove 231 can be circular, and the corresponding circular diameter d3 of the oil collection groove 231 can be 50mm to 100mm, such as 50mm, 55mm, 60mm, 75mm, 80mm, 90mm, 95mm, 100mm, etc.

[0075] like Figure 4 , Figures 6 to 11As shown, in one embodiment of this disclosure, the partition 230 may be provided with an assembly hole 232, which is a receiving structure. The receiving structure may be a through hole opened on the partition 230 or the assembly hole 232 may have a tubular structure extending below the partition 230 (e.g., a hole-and-tube structure shown in the figures). The lower end of the oil separator core is disposed within the receiving structure of the assembly hole 232. Through the above design, this disclosure utilizes the receiving structure of the assembly hole 232 to install the lower end of the oil separator core, thereby extending the length of the axial installation mating area between the oil separator core and the partition 230 and optimizing the installation effect of the oil separator core on the partition 230. In other embodiments of this disclosure, the receiving structure of the assembly hole 232 may also extend to a tubular structure above the partition 230 (e.g., a hole-and-tube structure), and is not limited to this embodiment.

[0076] like Figure 1 , Figure 4 and Figure 5 As shown, in one embodiment of this disclosure, the barrel cover 120 may be provided with an openable / closable or detachable operating cover 122, the position of which corresponds to the position of the oil separator core. Specifically, the barrel cover 120 is provided with an operating hole corresponding to the position of the oil separator core, and the operating cover 122 can be detachably installed at the operating hole of the barrel cover 120 by means of bolts, rivets, or other connecting parts. With the above design, when it is necessary to install or remove the oil separator core for replacement, the operator can simply remove the operating cover 122 to expose the operating hole without having to remove the entire barrel cover 120, which can reduce the maintenance time of the oil separator core and reduce the labor intensity of the operator.

[0077] like Figure 1 , Figure 5 and Figure 9 As shown, based on the design of the barrel lid 120 with an operating cover 122, in one embodiment of this disclosure, the oil-gas separation device proposed in this disclosure may include three oil separator cores arranged circumferentially at intervals. The number of operating covers 122 is the same as the number of oil separator cores and they are arranged in a one-to-one correspondence. Furthermore, when the partition plate 230 is provided with an assembly groove, the number of assembly grooves can also be the same as the number of oil separator cores and they are arranged in a one-to-one correspondence. It should be noted that the oil separator cores are not shown in the accompanying drawings, but can be understood based on the number and position of the operating covers 122, assembly grooves, and other related structures. Through the above design, this disclosure can optimize the functional effect of the oil separator cores. In addition, when it is necessary to install or remove any oil separator core, only the corresponding operating cover 122 can be removed, thereby further reducing the maintenance time of the oil separator cores. In other embodiments of this disclosure, the oil-gas separation device may also include one, two, four, or more oil separator cores, and is not limited to this embodiment.

[0078] like Figure 1 , Figure 5 and Figure 9As shown, in one embodiment of this disclosure, when the oil-gas separation device includes two or more oil separator cores, these oil separator cores can be arranged evenly at circumferential intervals. Through the above design, this disclosure can achieve a similar workload for each oil separator core, further optimizing the functional effect of the oil separator core.

[0079] like Figure 3 and Figure 4 As shown, in one embodiment of this disclosure, the oil-gas separation device may further include an oil level stabilizing plate 400. The oil level stabilizing plate 400 is connected to the inner wall of the tank body 110, and is spaced below the liner 200. The oil level stabilizing plate 400 is provided with through holes 401. The highest oil level in the oil-gas tank 100 is located below the oil level stabilizing plate 400. The "highest oil level" refers to the highest position of the oil surface in the oil-gas tank 100 during normal operation of the oil-gas separation device. Through the above design, this disclosure utilizes the through holes 401 to allow the separated oil to flow downwards to the bottom of the oil-gas tank 100, preventing the oil level stabilizing plate 400 from affecting the downward flow of the separated oil. Furthermore, this disclosure utilizes the oil level stabilizing plate 400 to prevent the oil at the bottom of the tank from being swept upwards by the compressed airflow, thereby stabilizing the oil level at the bottom of the tank and further improving the oil-gas separation efficiency. In some other embodiments of this disclosure, when the oil level stabilizing plate 400 is not provided in the oil-gas tank 100, the lower end of the baffle 220 can be flush with the highest oil level in the oil-gas tank 100. Accordingly, the baffle 220 can effectively prevent liquid level disturbance, improve oil-gas separation efficiency, and reduce the oil content at the compressed gas outlet.

[0080] like Figure 3 As shown, based on the design of the oil-gas separator including the oil level stabilizing plate 400, in one embodiment of this disclosure, the tank body 110 may be provided with an upper oil level sight glass 112 and a lower oil level sight glass 113 arranged vertically at intervals. The upper oil level sight glass 112 is located near the highest oil level in the oil-gas tank 100, allowing observation of changes in the highest oil level. The lower oil level sight glass 113 is located above the lowest oil level, and cannot be used to observe the lowest oil level. That is, under normal operating conditions of the compressor, the highest, normally operating oil level in the oil-gas tank 100 is located between the upper oil level sight glass 112 and the lower oil level sight glass 113. Therefore, the user can observe the oil level in the oil-gas tank 100 through the upper oil level sight glass 112 and the lower oil level sight glass 113. Based on this, the oil level stabilizing plate 400 can be located between the upper oil level sight glass 112 and the lower oil level sight glass 113.

[0081] like Figure 3As shown, in one embodiment of this disclosure, in the height direction, the oil level stabilizing plate 400 is arranged adjacent to the upper oil level sight glass 112 compared to the lower oil level sight glass 113. In other words, in the height direction, the distance between the oil level stabilizing plate 400 and the upper oil level sight glass 112 is less than the distance between it and the lower oil level sight glass 113, thereby further ensuring that the oil level stabilizing plate 400 provides an effective function of preventing liquid level disturbance, which can reduce the oil content at the compressed gas outlet.

[0082] like Figure 3 As shown, based on the design of the oil-gas separation device including the oil level stabilizing plate 400, in one embodiment of this disclosure, according to the design requirements of the highest oil level range during normal operation of the compressor, the distance h5 between the oil level stabilizing plate 400 and the baffle 220 can be 50mm to 500mm, such as 50mm, 60mm, 75mm, 90mm, 100mm, 120mm, 150mm, 180mm, 200mm, 250mm, 300mm, 350mm, 400mm, 420mm, 450mm, 480mm, 500mm, etc., to reduce the disturbance of the oil level and the oil content at the compressed gas outlet.

[0083] like Figure 3 As shown, based on the design of the oil-gas separation device including the oil level stabilizing plate 400, in one embodiment of this disclosure, according to the design requirements of the highest oil level range during normal operation of the compressor, the ratio of the distance h6 between the oil level stabilizing plate 400 and the bottom of the oil-gas tank 100 to the height h1 of the oil-gas tank 100 (which can be specifically calculated from the bottom of the tank body 110) can be 0.25 to 0.5, for example, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc., to reduce the disturbance of the oil level and the oil content at the outlet of the compressed gas.

[0084] like Figure 3 and Figure 4 As shown, based on the design of the oil-gas separation device including an oil level stabilizing plate 400, in one embodiment of this disclosure, the oil level stabilizing plate 400 may include a conical portion 410 and an annular portion 420. The conical portion 410 has an upwardly inclined conical surface shape in the direction from the outer periphery to the center. The inner periphery of the annular portion 420 is connected to the outer periphery of the conical portion 410, and the outer periphery of the annular portion 420 is connected to the inner wall of the barrel body 110. A through hole 401 is provided in the annular portion 420. With the above design, after the oil falls from above onto the oil level stabilizing plate 400, it can flow through the conical portion 410 to the annular portion 420, avoiding the accumulation of oil in the middle area of ​​the oil level stabilizing plate 400, so that the oil can quickly and fully flow to the annular portion 420 and continue to flow downward to the bottom of the barrel through the through hole 401.

[0085] Based on the design of the oil level stabilizing plate 400 including the conical portion 410, in one embodiment of this disclosure, the ratio of the diameter of the conical portion 410 (which can be understood as the diameter of the orthographic projection of the conical portion 410 on the horizontal plane) to the diameter of the oil level stabilizing plate 400 can be 0.5 to 0.9, for example, 0.5, 0.6, 0.7, 0.85, 0.9, etc.

[0086] Furthermore, based on the design requirements of the oil draining structure, the ratio of the diameter of the conical part 410 to the diameter of the oil level stabilizing plate 400 can be specifically 0.75 to 0.8, such as 0.75, 0.76, 0.77, 0.78, 0.8, etc., to improve the oil draining efficiency of the oil level stabilizing plate 400.

[0087] like Figure 3 As shown, based on the design requirements for oil discharge efficiency, and considering the design of the oil level stabilizing plate 400 including the conical portion 410, in one embodiment of this disclosure, the inclination angle β of the conical portion 410 relative to the horizontal plane can be 10° to 45°, for example, 10°, 15°, 20°, 25°, 30°, 35°, 45°, etc., to improve the oil discharge efficiency of the oil level stabilizing plate 400.

[0088] Based on the design of the oil level stabilizing plate 400 including an annular portion 420 and a through hole 401 disposed in the annular portion 420, in one embodiment of this disclosure, according to the design requirements of oil drainage efficiency, the opening ratio of the through hole 401 on the annular portion 420 can be 15% to 30%, such as 15%, 16%, 25%, 27%, 30%, etc., to improve the oil drainage efficiency of the oil level stabilizing plate 400.

[0089] Furthermore, on the annular portion 420, the opening ratio of the through hole 401 can be specifically 18% to 24%, such as 18%, 19%, 20%, 22%, 24%, etc.

[0090] Based on the design of the oil-gas separation device including an oil level stabilizing plate 400 and the oil level stabilizing plate 400 having a through hole 401, in one embodiment of this disclosure, the diameter of the through hole 401 can be 10mm to 30mm, such as 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, etc., according to the design requirements of oil discharge efficiency for different models, so as to adapt to the oil discharge requirements of different models.

[0091] Based on the design of the oil-gas separation device including the oil level stabilizing plate 400, in one embodiment of this disclosure, the oil level stabilizing plate 400 and the inner wall of the barrel 110 can be welded together, or the oil level stabilizing plate 400 and the barrel 110 can also be an integral structure.

[0092] like Figure 1 , Figure 5 and Figure 6As shown, in one embodiment of this disclosure, the oil-gas separation device includes an inlet pipe 130 connected to an oil-gas tank 100. At the location where the inlet pipe 130 connects to the oil-gas tank 100, the axis of the inlet pipe 130 extends approximately tangentially along the oil-gas tank 100, and the angle between the axis of the inlet pipe 130 and the tangent of the oil-gas tank 100 is -10° to 10°. Based on this, the inlet pipe 130 can connect to the portion of the tank body 110 corresponding to the liner 200. That is, axially, the connection point between the inlet pipe 130 and the tank body 110 is located between the upper end of the liner 200 (e.g., flange 211) and the baffle 220. Further, axially, the connection point between the inlet pipe 130 and the tank body 110 can specifically be located above the partition 230.

[0093] Unlike the embodiment shown in the accompanying drawings, where the connection between the air inlet pipe 130 and the barrel body 110 is located above the baffle 220, in another embodiment of this disclosure, when the oil-gas separator further includes an oil level stabilizing plate 400, the connection between the air inlet pipe 130 and the barrel body 110 can be located in the area of ​​the barrel body 110 between the liner 200 (e.g., baffle 220) and the oil level stabilizing plate 400.

[0094] Based on the detailed description of several exemplary embodiments of the oil-gas separation device proposed in this disclosure above, the applicant has further selected and combined the aforementioned main parameters, thereby forming multiple specific embodiments. The applicant has conducted simulation verification on these specific embodiments to obtain the efficacy parameters characterizing the oil-gas separation efficiency (e.g., outlet oil content) of each specific embodiment. Details are as follows:

[0095] Reference Comparison

[0096] Referring to an existing oil-gas separator, the oil-gas tank does not have the liner and oil level stabilizing plate of this disclosure, and its outlet oil content is 7.12% to 7.98%. Specific Implementation Example 1

[0098] The initial separation hole 201 has a diameter of 20mm; in the portion of the cylinder 210 between the baffle 220 and the partition 230, the opening ratio of the initial separation hole 201 is 24%. The diameter of the central hole 2201 is 218mm. The highest oil level is flush with the lower end of the baffle 220. No oil level stabilizing plate 400 is installed inside the oil-gas tank 100. The connection between the air inlet pipe 130 and the tank body 110 is located between the upper end of the liner 200 and the baffle 220. This specific embodiment, verified through simulation, shows an outlet oil content of 6.7%–7.69%, with both the lower and upper limits of the range decreasing compared to the reference comparison, thus achieving a certain degree of improvement in oil-gas separation efficiency. Specific Implementation Example 2

[0100] Compared to Specific Embodiment 1, Specific Embodiment 2 includes an oil level stabilizing plate 400 inside the oil-gas tank 100. The highest oil level is located below the oil level stabilizing plate 400. The connection between the air inlet pipe 130 and the tank body 110 is located between the upper end of the liner 200 and the baffle 220. Simulation verification of this embodiment shows that its outlet oil content is 4.51%–4.72%, with both the lower and upper limits significantly lower than the reference comparison, achieving a significant improvement in oil-gas separation efficiency.

[0101] It should be noted that the oil-gas separation devices shown in the accompanying drawings and described in this specification are merely a few examples among many oil-gas separation devices capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the oil-gas separation devices shown in the accompanying drawings or described in this specification.

[0102] In summary, the oil-gas separation device proposed in this disclosure includes an oil-gas tank 100, a liner 200, and an oil separator core; the oil-gas tank 100 includes a tank body 110 and a tank cover 120; the tank cover 120 is installed on the upper end of the tank body 110; the liner 200 is disposed inside the oil-gas tank 100 and includes a cylinder 210, a baffle 220, and a partition 230; the cylinder 210 is connected to the oil-gas tank 100; the baffle 220 is connected to the lower end of the cylinder 210; the baffle 220 is annular and has a central hole 2201, and the baffle 220 is a conical surface arranged downwardly; the partition 230 is connected to the inner wall of the cylinder 210 and is spaced above the baffle 220; the oil separator core is installed on the upper surface of the partition 230. Through the above design, utilizing the inclined arrangement of the baffle 220, this disclosure facilitates the flow of the separated oil to the bottom of the oil-gas tank, and also prevents the oil at the bottom of the oil-gas tank 100 from being swept upwards by the compressed airflow, thereby stabilizing the oil level and improving the oil-gas separation efficiency. Furthermore, it reduces the diameter and weight of the oil-gas tank 100. In addition, this disclosure utilizes the partition 230 of the liner 200 to install the oil separator core, integrating the installation of the oil separator core and the oil-gas separation function into a single liner 200. This reduces the number of components in the oil-gas separation device, lowering the manufacturing difficulty and cost.

[0103] The exemplary embodiments of the oil-gas separation apparatus proposed in this disclosure have been described and / or illustrated in detail above. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms "a," "an," and "the above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising," "including," and "having" are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc. Furthermore, the terms "first" and "second," etc., in the claims and description are used only as illustrative marks and are not intended to limit the numerical scope of the object.

[0104] Although the oil-gas separation apparatus proposed in this disclosure has been described according to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. An oil-gas separation device, characterized in that, include: An oil and gas tank (100) includes a tank body (110) and a tank cover (120); the upper end of the tank body (110) is provided with an opening, and the tank cover (120) is installed on the upper end of the tank body (110) to close the opening; A liner (200), disposed within the oil and gas tank (100), and comprising: A cylinder (210) is connected to the oil and gas tank (100), and its axis is parallel to the axis of the barrel body (110); A baffle (220) is connected to the lower end opening of the cylinder (210); the baffle (220) is annular and has a central hole (2201); the baffle (220) is a conical surface arranged downwards in the direction from the outer periphery to the center; and A partition (230) is connected to the inner wall of the cylinder (210) and spaced above the baffle (220); and An oil separator core is disposed inside the oil and gas tank (100) and partially located inside the cylinder (210). The oil separator core is installed on the upper surface of the partition (230).

2. The oil-gas separation device according to claim 1, characterized in that: The ratio of the height (h1) of the oil and gas tank (100) to the height (h2) of the liner (200) is 1.2 to 4; and / or The ratio of the inner diameter (d1) of the barrel body (110) to the outer diameter (d2) of the liner barrel (200) is 1.1 to 3.

3. The oil-gas separation device according to claim 1, characterized in that, The portion of the cylinder (210) between the baffle (220) and the partition (230) is provided with a plurality of initial dividing holes (201).

4. The oil-gas separation device according to claim 3, characterized in that: In the portion of the cylinder (210) between the baffle (220) and the partition (230), the opening ratio of the initial dividing hole (201) is 12% to 25%; and / or The diameter of the initial dividing hole (201) is 5mm to 15mm.

5. The oil-gas separation device according to claim 3, characterized in that, The multiple initial dividing holes (201) are arranged in multiple rows with vertical spacing; wherein: The initial dividing holes (201) in adjacent rows are arranged in a one-to-one alignment; or The initial dividing holes (201) in adjacent rows are arranged in an alternating pattern.

6. The oil-gas separation device according to claim 1, characterized in that: The diameter of the central hole (2201) of the baffle (220) is 40mm to 250mm; and / or The angle (α) of the baffle (220) relative to the horizontal plane is greater than or equal to 10°.

7. The oil-gas separation device according to claim 1, characterized in that: The ratio of the distance (h3) between the baffle (220) and the partition (230) to the height (h2) of the liner (200) is 0.3 to 0.5; and / or The ratio of the height (h4) of the portion of the liner (200) above the partition (230) to the height (h2) of the liner (200) is 0.5 to 0.

7.

8. The oil-gas separation device according to claim 1, characterized in that: A first flange (111) is provided on the upper outer periphery of the barrel body (110), and a second flange (121) is provided on the lower outer periphery of the barrel cover (120); an outwardly extending flange (211) is provided on the upper periphery of the cylinder body (210), and the flange (211) is provided between the first flange (111) and the second flange (121), and the first flange (111), the second flange (121) and the flange (211) are fixedly connected.

9. The oil-gas separation device according to claim 1, characterized in that, The upper surface of the partition (230) is provided with an oil collection trough (231); the oil-gas separation device also includes an oil return pipe (300) disposed in the oil-gas tank (100), the lower end of the oil return pipe (300) extends into the oil collection trough (231), and the upper end extends out of the tank cover (120). The oil collection trough (231) is circular, and its corresponding circle diameter (d3) is 50mm to 100mm.

10. The oil-gas separation device according to claim 1, characterized in that, The partition (230) is provided with an assembly hole (232), which is a receiving structure, and the lower end of the oil separator core is disposed in the receiving structure of the assembly hole (232); The accommodating structure may be a through hole opened in the partition (230); and / or The accommodating structure may be a tubular structure in which the mounting hole (232) extends below or above the partition (230).

11. The oil-gas separation device according to claim 1, characterized in that, The barrel cover (120) is provided with an openable or detachable operating cover (122), the position of which corresponds to the position of the oil separator core.

12. The oil-gas separation device according to claim 11, characterized in that, The oil-gas separation device includes at least two oil separator cores arranged at intervals along the circumference; wherein the number of operating covers (122) is the same as the number of oil separator cores and they are arranged in a one-to-one correspondence.

13. The oil-gas separation device according to claim 1, characterized in that, The lower end of the baffle (220) is level with the highest oil level in the oil and gas tank (100).

14. The oil-gas separation device according to claim 1, characterized in that, The oil-gas separation device also includes: An oil level stabilizing plate (400) is connected to the inner wall of the barrel body (110) and is located at intervals below the liner barrel (200). The oil level stabilizing plate (400) is provided with a through hole (401). The highest oil level in the oil and gas barrel (100) is located below the oil level stabilizing plate (400).

15. The oil-gas separation device according to claim 14, characterized in that, The barrel body (110) is provided with an upper oil level sight glass (112) and a lower oil level sight glass (113) arranged at intervals; wherein, the oil level stabilizing plate (400) is located between the upper oil level sight glass (112) and the lower oil level sight glass (113).

16. The oil-gas separation device according to claim 15, characterized in that, In the vertical direction, the oil level stabilizing plate (400) is arranged adjacent to the upper oil level sight (112) relative to the lower oil level sight (113).

17. The oil-gas separation device according to claim 14, characterized in that: The distance (h5) between the oil level stabilizing plate (400) and the baffle (220) is 50mm to 500mm; and / or The ratio of the distance (h6) between the bottom of the oil level stabilizing plate (400) and the bottom of the oil and gas tank (100) to the height (h1) of the oil and gas tank (100) is 0.25 to 0.

5.

18. The oil-gas separation device according to claim 14, characterized in that, The oil level stabilizing plate (400) includes: The conical portion (410) has an upwardly inclined conical surface arranged in the direction from the outer periphery to the center; and The annular portion (420) has its inner circumference connected to the outer circumference of the conical portion (410), and the outer circumference of the annular portion (420) is connected to the inner wall of the barrel body (110); the through hole (401) is provided in the annular portion (420).

19. The oil-gas separation device according to claim 18, characterized in that: The ratio of the diameter of the conical portion (410) to the diameter of the oil level stabilizing plate (400) is 0.5 to 0.9; and / or The angle (β) of the tapered portion (410) relative to the horizontal plane is 10° to 45°; and / or On the annular portion (420), the opening ratio of the through hole (401) is 15% to 30%; and / or The diameter of the through hole (401) is 10mm to 30mm.

20. The oil-gas separation device according to claim 1, characterized in that, The oil-gas separation device includes an inlet pipe (130) connected to the oil-gas tank (100). At the location where the oil-gas tank (100) is connected to the inlet pipe (130), the axis of the inlet pipe (130) extends tangentially along the oil-gas tank (100); wherein: The air inlet pipe (130) connects to the portion of the barrel body (110) corresponding to the liner barrel (200); or The oil-gas separation device further includes an oil level stabilizing plate (400), which is connected to the inner wall of the barrel body (110) and located at intervals below the liner (200). The oil level stabilizing plate (400) is provided with a through hole (401). The air inlet pipe (130) connects to the area of ​​the barrel body (110) between the liner (200) and the oil level stabilizing plate (400).

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