Oil-gas separator

Abstract

An oil-gas separator. The oil-gas separator comprises: a housing, having a separation cavity, the housing being provided with a gas outlet, an oil outlet and a fluid inlet which are in communication with the separation cavity, the gas outlet being located at the top of the housing, the oil outlet being located at the bottom of the housing, and the fluid inlet being located on a side wall of the housing and close to the middle or upper portion of the housing; a flow blocking member, provided at the bottom of the separation cavity, the flow blocking member being used for blocking the rotation of oil accumulated at the bottom of the separation cavity; and a partition plate, provided in the separation cavity and close to the middle portion of the separation cavity in the vertical direction, the partition plate spreading in the transverse direction so as to partition the separation cavity into a swirl space located above the partition plate and a steady-flow space located between the partition plate and the flow blocking member. A first gap is formed between the outer periphery of the partition plate and the inner wall of the separation cavity, so as to communicate the swirl space with the steady-flow space.

Description

oil-gas separator

[0001] This application claims priority to Chinese Utility Model Patent Application No. 202422584057.2, filed on October 24, 2024, entitled "Oil-Gas Separator", the entire contents of which are incorporated herein by reference. Technical Field

[0002] The exemplary embodiments of this application generally relate to the field of oil and gas separation technology, and particularly to an oil and gas separator. Background Technology

[0003] Cyclone oil-gas separators utilize the centrifugal force of rotating airflow to separate oil and gas. In traditional oil-gas separators, the rotating airflow disturbs the oil accumulated at the bottom and easily forms foam inside the cylinder, thus affecting the oil-gas separation effect and subsequent oil recycling. Summary of the Invention

[0004] The purpose of this application is to provide an oil-gas separator that solves or at least partially solves the aforementioned problems and / or other potential problems existing in conventional oil-gas separators.

[0005] This application provides an oil-gas separator. The oil-gas separator includes: a housing having a separation chamber; the housing having an outlet, an oil outlet, and a fluid inlet communicating with the separation chamber; the outlet being located at the top of the housing, the oil outlet at the bottom of the housing, and the fluid inlet located on the side wall of the housing and near the middle or upper part of the housing; a flow-blocking component disposed at the bottom of the separation chamber, the flow-blocking component being used to prevent the oil accumulated at the bottom of the separation chamber from rotating; and a partition plate disposed in the separation chamber and near the vertical center of the separation chamber; the partition plate is laid laterally to divide the separation chamber into a swirling space above the partition plate and a stabilizing space between the partition plate and the flow-blocking component; a first gap exists between the outer periphery of the partition plate and the inner wall of the separation chamber to connect the swirling space and the stabilizing space.

[0006] In some embodiments, the flow-blocking component includes: at least one baffle disposed at the bottom of the separation chamber, the at least one baffle extending vertically to block the rotation of oil accumulated at the bottom of the separation chamber; and a support extending vertically, the bottom end of the support being connected to the at least one baffle, and the top end of the support being connected to the partition plate to support the partition plate.

[0007] In some embodiments, the support portion includes a first support plate and a second support plate, wherein one side edge of the first support plate and one side edge of the second support plate are connected to form the support portion with an L-shaped cross-section.

[0008] In some embodiments, the at least one baffle includes: a first baffle extending from the other side edge of the first support plate toward the inner wall of the separation cavity; and a second baffle extending from the other side edge of the second support plate toward the inner wall of the separation cavity in a direction different from that of the first baffle.

[0009] In some embodiments, the first baffle and the first support plate are located on the same plane, and the second baffle and the first baffle extend along the inner wall of the separation cavity in opposite directions.

[0010] In some embodiments, the flow-blocking component has a Z-shaped cross-section at the first baffle and the second baffle.

[0011] In some embodiments, the at least one baffle includes: a first baffle extending from one side edge of the support toward the inner wall of the separation cavity; and a second baffle extending from the other side edge of the support toward the inner wall of the separation cavity in a direction different from that of the first baffle.

[0012] In some embodiments, the flow-blocking component is formed by integral bending.

[0013] In some embodiments, the flow-blocking component is welded to the partition plate and / or the bottom of the housing.

[0014] In some embodiments, the bottom end of the flow-blocking component is provided with a guide hole so that oil can flow from one side of the flow-blocking component to the other side of the flow-blocking component through the guide hole.

[0015] In some embodiments, the side wall of the housing is provided with an oil filling port communicating with the separation chamber, and the oil filling port is located below the partition plate.

[0016] In some embodiments, a baffle is provided in the middle or upper part of the separation chamber, and a second gap is provided between the outer wall of the baffle and the inner wall of the separation chamber to form a flow guiding space with an annular cross-section through the second gap; the outer periphery of the flow guiding space is connected to the fluid inlet, and the bottom end of the flow guiding space is connected to the swirling space. Attached Figure Description

[0017] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0018] Figure 1 shows a perspective view of an oil-gas separator according to some embodiments of this application;

[0019] Figure 2 shows a top view of an oil-gas separator according to some embodiments of this application;

[0020] Figure 3 shows a side view of the oil-gas separator after being cut along line A-0-B in Figure 2;

[0021] Figure 4 shows a perspective view of the oil-gas separator after being cut along line A-0-B in Figure 2;

[0022] Figure 5 shows a perspective view of a partial structure of an oil-gas separator according to some embodiments of this application; and

[0023] Figure 6 shows a perspective view of a partition plate and a flow-blocking component according to some embodiments of this application.

[0024] Explanation of reference numerals in the attached drawings: 10-Shell; 11-Fluid inlet; 12-Drain outlet; 13-Air outlet; 14-Add oil inlet; 15-Separation chamber; 16-Swirl space; 17-Flow stabilization space; 18-Oil outlet; 19-Oil return pipe; 20-Divider plate; 30-Baffle component; 31-Baffle; 32-First baffle; 33-Second baffle; 34-Support part; 35-First support plate; 36-Second support plate; 37-Guide hole; 40-Baffle cylinder; 41-Guide space. Detailed Implementation

[0025] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0027] Traditional cyclone separators typically consist of a shell, which usually has a mixture inlet, an air outlet, and an oil outlet. The oil-gas mixture is introduced into the separation chamber through the mixture inlet, tangentially or approximately tangentially, where it rotates. Under the combined action of centrifugal force and gravity, the oil is separated and remains at the bottom of the separation chamber, while the gas is discharged through the air outlet, thus achieving oil-gas separation. However, in these traditional oil-gas separators, the rotating airflow can disturb the oil accumulated at the bottom and easily form foam within the cylinder, thereby affecting the oil-gas separation efficiency and subsequent oil recycling.

[0028] In view of this, the present application provides an oil-gas separator. As shown in Figures 1 to 6, the oil-gas separator of the present application includes a housing 10, a flow-blocking component 30, and a partition plate 20.

[0029] The housing 10 has a separation chamber 15 inside, and the housing 10 is provided with an air outlet 13, an oil outlet 18, and a fluid inlet 11 communicating with the separation chamber 15. The air outlet 13 is located at the top of the housing 10, the oil outlet 18 is located at the bottom of the housing 10, and the fluid inlet 11 is located on the side wall of the housing 10 and near the middle or upper part of the housing 10. In some examples, the separation chamber 15 may be cylindrical or approximately cylindrical. As an example, the housing 10 may include a cylindrical body, an upper end cap, and a lower end cap. The cylindrical body may include a cylindrical structure with openings at both ends, and the axis of the cylindrical body may extend vertically. The upper end cap may cover the top opening of the cylindrical body, and the lower end cap may cover the bottom opening of the cylindrical body.

[0030] In some examples, the fluid inlet 11 may be located near the top of the cylinder. Exemplarily, the fluid inlet 11 may be configured to allow the oil-gas mixture to flow into the separation chamber 15 in a direction close to the tangential of the cylinder.

[0031] In some examples, the upper end cap can be approximately semi-circular, and the vent 13 can be located at the top center of the upper end cap. The lower end cap can also be approximately semi-circular, and the oil outlet 18 can be located at the bottom of the lower end cap to facilitate oil discharge, as shown in Figure 4. Furthermore, the oil outlet 18 can be connected to a return oil pipe 19, through which oil can be returned for recycling, as shown in Figure 3. It is understood that the above-described housing 10 structure is merely exemplary, and in practical applications, the housing 10 can be constructed in any suitable shape. This application embodiment does not limit this aspect.

[0032] A flow-blocking component 30 is disposed at the bottom of the separation chamber 15. This component prevents the oil accumulated at the bottom of the separation chamber 15 from rotating. Specifically, during the swirling flow of the airflow in the separation chamber 15, the oil accumulated at the bottom of the chamber is easily agitated and rotated by the airflow. The flow-blocking component 30 prevents the oil from rotating, thereby improving oil stability, avoiding or reducing the generation of foam within the oil-gas separator, and thus improving the oil-gas separation effect.

[0033] A partition plate 20 is disposed within the separation chamber 15 and near the vertical center of the separation chamber 15. The partition plate 20 extends laterally to divide the separation chamber 15 into a swirling space 16 located above the partition plate 20 and a stabilizing space 17 located between the partition plate 20 and the flow-blocking member 30. A first gap exists between the outer periphery of the partition plate 20 and the inner wall of the separation chamber 15 to connect the swirling space 16 and the flow-stabilizing space.

[0034] In actual use, the oil-gas mixture flows into the swirling space 16 of the separation chamber 15 through the fluid inlet 11, and rotates and descends in the swirling space 16. Some of the oil collides with the inner wall of the separation chamber 15 as it rotates and falls, adhering to the inner wall and then flowing down to the bottom of the separation chamber 15. After primary separation, the oil-gas mixture collides with the separator plate 20; the gas flows upward, and some oil adheres to the separator plate 20 and drips from it to the bottom of the separation chamber 15. Although a small portion of the oil-gas mixture flows into the stabilizing space 17 through the first gap between the outer periphery of the separator plate 20 and the inner wall of the separation chamber 15, it does not cause severe disturbance to the oil in the stabilizing space 17, thus improving the oil-gas separation effect. In addition, a baffle is installed at the bottom of the separation chamber to prevent the oil accumulated at the bottom of the separation chamber from rotating, which stabilizes the oil height at the bottom of the oil-gas separator and avoids or reduces the generation of foam, thereby improving the oil-gas separation effect.

[0035] In some embodiments, a baffle 40 is provided in the middle or upper part of the separation chamber 15, and a second gap is formed between the outer wall of the baffle 40 and the inner wall of the separation chamber 15 to form a flow guide space 41 with an annular cross-section through the second gap. The outer periphery of the flow guide space 41 communicates with the fluid inlet 11, and the bottom end of the flow guide space 41 communicates with the vortex space 16. In actual operation, the oil-gas mixture flows through the flow guide space 41 via the fluid inlet 11. Guided by the baffle 40, the oil-gas mixture flows around the annular flow guide space 41, causing the oil-gas mixture to form a high-speed rotational motion, thus achieving cyclone separation. Afterwards, it flows into the vortex space 16 through the bottom end of the flow guide space 41. Under the action of inertia, the oil-gas mixture will still maintain a high-speed rotational motion to perform oil-gas separation. The separated gas flows into the vortex space 16 through the bottom of the guide space 41 and is discharged through the outlet 13. The separated oil drips down the inner wall of the partition cylinder 40 or the separation chamber 15 to the bottom of the separation chamber 15. This helps to increase the centrifugal force of the oil-gas mixture, thereby improving the oil-gas separation effect.

[0036] In some examples, the partition 40 may include a cylindrical structure open at both ends. The top end of the partition 40 may be connected to the top of the housing 10, for example, the top end of the partition 40 may be welded to the upper end cap. The bottom end of the cavity of the partition 40 may communicate with the swirling space 16, and the top end of the cavity of the partition 40 may communicate with the outlet 13, so that the gas after oil-gas separation in the swirling space 16 can flow through the cavity of the partition 40 into the outlet 13, and finally be discharged through the outlet 13.

[0037] In some embodiments, the periphery of the housing 10 is provided with an oil filling port 14, which is located below the partition plate 20. Exemplarily, as shown in Figures 3 and 4, the partition plate 20 may be located at the vertical center of the housing 10, and the oil filling port 14 may be located slightly below the vertical center of the housing 10. In this way, oil can be injected into the area below the partition plate 20 through the oil filling port 14, preventing the rotating airflow and oil in the swirling space 16 from intersecting, thereby avoiding interference between the oil replenishment process and the oil-gas separation process, and thus ensuring the separation effect of the oil-gas separator.

[0038] In some embodiments, as shown in Figures 5 and 6, the separator 20 can be circular, with its axis coinciding with the axis of the housing 10 and its diameter smaller than that of the housing 10. This maintains a first gap between the outer periphery of the separator 20 and the inner wall of the separation chamber 15, with the width of the first gap being uniform. This ensures that the oil after coarse separation flows evenly along the inner wall through the annular first gap into the flow stabilization space 17, thereby improving the oil stability in the flow stabilization space 17 and ultimately enhancing the oil-gas separation effect.

[0039] In some embodiments, as shown in Figures 4 to 6, the flow-blocking component 30 may include at least one baffle 31 and a support portion 34. The at least one baffle 31 is disposed at the bottom of the separation chamber 15 and can extend vertically to prevent the oil accumulated at the bottom of the separation chamber 15 from rotating. The support portion 34 extends vertically, with its bottom end connected to the at least one baffle 31 and its top end connected to a first baffle 32 to support the partition plate 20. The at least one baffle 31 effectively prevents the oil accumulated at the bottom of the separation chamber 15 from rotating, preventing swirling of the oil at the bottom and causing the oil level to rise, thus affecting the oil-gas separation effect. Using the flow-blocking component 30 to support the partition plate 20 simplifies the internal structure of the separation chamber 15, thereby reducing production costs.

[0040] In some embodiments, the support portion 34 includes a first support plate 35 and a second support plate 36, with one side edge of the first support plate 35 and one side edge of the second support plate 36 connected to form an L-shaped cross-section support portion 34. The L-shaped cross-section support portion 34 has high structural strength, and can stably support the separator plate 20 by only providing two support plates, reducing production costs while improving the stability and robustness of the oil-gas separator.

[0041] In some examples, the support portion 34 can be formed by bending sheet metal (e.g., steel plate). This helps reduce processing difficulty and production costs. In some examples, the support portion 34 can extend along or approximately along the axis of the housing 10. This helps maintain a balanced force on the partition plate 20, thereby improving its stability. It should be noted that the specific structure of the support portion 34 described above is merely exemplary, and the support portion 34 can be constructed in any shape suitable for supporting the partition plate 20 according to actual needs.

[0042] In some embodiments, as shown in Figures 4 to 6, the at least one baffle 31 may include a first baffle 32 and a second baffle 33. The first baffle 32 extends from one edge of the support portion 34 toward the inner wall of the separation chamber 15. The second baffle 33 extends from the other edge of the support portion 34 toward the inner wall of the separation chamber 15 in a direction different from that of the first baffle 32. The first baffle 32 and the second baffle 33 can effectively prevent the oil at the bottom of the oil-gas separator from rotating.

[0043] In some examples, the support 34 may extend along the axis of the housing 10, so that the first baffle 32 and the second baffle 33 extend from near the axis of the housing 10, approximately along the radial direction of the housing 10, to the inner wall of the separation cavity 15, which is beneficial to improving the flow stabilization effect of the flow-blocking component 30.

[0044] In some examples, one end of the first baffle 32 can be connected to one side edge of the support 34, and one end of the second baffle 33 can be connected to the other side edge of the support 34. The other ends of the first baffle 32 and the second baffle 33 can extend toward the inner wall of the separation chamber 15 in opposite directions. This not only helps to improve the flow stabilization effect of the oil, but also helps to improve the stability of the separator 20.

[0045] In some examples, the bottom surface of the separation cavity 15 can be arc-shaped, and the lower edge of the first baffle 32 and the lower edge of the second baffle 33 can be arc-shaped so that they can fit tightly against the bottom surface of the separation cavity 15, thereby ensuring the flow stabilization effect.

[0046] In some embodiments, the support portion 34 may include a first support plate 35 and a second support plate 36 perpendicular to each other, with one edge of the first support plate 35 connected to the other edge of the second support plate 36. A first baffle 32 extends from the other edge of the first support plate 35 toward the inner wall of the separation cavity 15, and a second baffle 33 extends from the other edge of the second support plate 36 toward the inner wall of the separation cavity 15 in a direction different from that of the first baffle 32. In some examples, the first baffle 32 and the first support plate 35 are located in the same plane, and the second baffle 33 and the first baffle 32 extend toward the inner wall of the separation cavity 15 in opposite directions. The first baffle 32 and the second baffle 33 are staggered, such that the flow-blocking member 30 has a Z-shaped or approximately Z-shaped cross-section at the first baffle 32 and the second baffle 33, which can stably support the partition plate 20.

[0047] In some embodiments, the flow-blocking component 30 can be formed by integral bending. For example, a sheet material (e.g., a steel plate) can be cut into an approximately inverted T shape, and the flow-blocking component 30 shown in Figures 4 to 6 can be formed by bending it twice. This can greatly simplify the processing difficulty of the flow-blocking component 30 and thus reduce production costs.

[0048] In some embodiments, the bottom end of the flow-blocking component 30 is provided with a guide hole 37, which extends laterally through the flow-blocking component 30, allowing oil to flow from one side of the flow-blocking component 30 to the other side via the guide hole 37. Exemplarily, as shown in Figures 4 and 5, the bottom surface of the separation chamber 15 can be approximately semi-circular, and a drain port 12 and an oil outlet 18 can be respectively provided on the bottom surface of the separation chamber 15. The drain port 12 can be located in the middle of the bottom surface of the separation chamber 15 (e.g., at the lowest point of the bottom surface of the separation chamber 15), and the drain port 12 can be located on one side of the flow-blocking component 30. The oil outlet 18 can be located on the bottom surface of the separation chamber 15 and on the other side of the flow-blocking component 30. The bottom end of the second support plate 36 can have a semi-circular notch, which, together with the bottom surface of the separation chamber 15, defines the guide hole 37. Oil located on one side of the flow-blocking component 30 can flow through the guide hole 37 to the side where the oil outlet 18 is located, and then be discharged through the oil outlet 18. Alternatively, oil located on the other side of the flow-blocking component 30 can flow through the guide hole 37 to the side where the drain outlet 12 is located, and then be discharged through the drain outlet 12.

[0049] In some embodiments, the flow-blocking component 30 can be welded to the partition plate 20 and the bottom of the housing 10. For example, the top end of the support portion 34 can be welded to the partition plate 20, and the bottom of the first baffle 32 and the bottom of the second baffle 33 can be welded to the bottom surface of the separation chamber 15. Of course, the flow-blocking component 30 can also be connected to the partition plate 20 and the bottom of the housing 10 via a connector. This application does not specifically limit its application in this regard.

[0050] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An oil-gas separator, comprising: The housing has a separation chamber. The housing is provided with an air outlet, an oil outlet and a fluid inlet communicating with the separation chamber. The air outlet is located at the top of the housing, the oil outlet is located at the bottom of the housing, and the fluid inlet is located on the side wall of the housing and near the middle or upper part of the housing. A flow-blocking component is disposed at the bottom of the separation chamber, and the flow-blocking component is used to prevent the oil accumulated at the bottom of the separation chamber from rotating; as well as A partition plate is disposed in the separation cavity and near the middle of the separation cavity in the vertical direction; the partition plate is laid out in the transverse direction to divide the separation cavity into a swirling space located above the partition plate and a stabilizing space located between the partition plate and the flow-blocking component; a first gap is formed between the outer periphery of the partition plate and the inner wall of the separation cavity to connect the swirling space and the stabilizing space.

2. The oil-gas separator according to claim 1, wherein, The flow-blocking component includes: At least one baffle is disposed at the bottom of the separation chamber, the at least one baffle being laid vertically to prevent the oil accumulated at the bottom of the separation chamber from rotating; and A support portion extends vertically, the bottom end of the support portion is connected to the at least one baffle, and the top end of the support portion is connected to the partition plate to support the partition plate.

3. The oil-gas separator according to claim 2, wherein, The support portion includes a first support plate and a second support plate, with one side edge of the first support plate and one side edge of the second support plate connected to form the support portion with an L-shaped cross-section.

4. The oil-gas separator according to claim 3, wherein, The at least one baffle includes: A first baffle extends from the other edge of the first support plate toward the inner wall of the separation cavity; and The second baffle extends from the other edge of the second support plate along a direction different from that of the first baffle toward the inner wall of the separation cavity.

5. The oil-gas separator according to claim 4, wherein, The first baffle and the first support plate are located on the same plane, and the second baffle and the first baffle extend along the inner wall of the separation cavity in opposite directions.

6. The oil-gas separator according to claim 4, wherein, The flow-blocking component has a Z-shaped cross-section at the first baffle and the second baffle.

7. The oil-gas separator according to claim 2, wherein, The at least one baffle includes: A first baffle extends from one edge of the support portion toward the inner wall of the separation cavity; and The second baffle extends from the other edge of the support portion along a direction different from that of the first baffle toward the inner wall of the separation cavity.

8. The oil-gas separator according to any one of claims 2 to 7, wherein, The flow-blocking component is formed by integral bending.

9. The oil-gas separator according to claim 8, wherein, The flow-blocking component is welded to the partition plate and / or the bottom of the housing.

10. The oil-gas separator according to claim 1, wherein, The bottom end of the flow-blocking component is provided with a guide hole so that the oil can flow from one side of the flow-blocking component to the other side of the flow-blocking component through the guide hole.

11. The oil-gas separator according to claim 1, wherein, The side wall of the housing is provided with an oil filling port that communicates with the separation chamber, and the oil filling port is located below the partition plate.

12. The oil-gas separator according to claim 1, wherein, The separation chamber is provided with a baffle in the middle or upper part, and there is a second gap between the outer wall of the baffle and the inner wall of the separation chamber, so as to form a flow guiding space with an annular cross-section through the second gap; the outer periphery of the flow guiding space is connected to the fluid inlet, and the bottom end of the flow guiding space is connected to the vortex space.

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