Self-cleaning crude oil vacuum degassing filter screen assembly

Abstract

This utility model discloses a self-cleaning crude oil vacuum degassing filter assembly, comprising: a connecting pipe, with connecting flanges at both ends; a filter structure in the middle of the connecting pipe; and a cleaning component for cleaning the filter structure near the filter structure. In this utility model, by using a filter structure in conjunction with the cleaning component, when filtering a mixed gas, the filter plate blocks impurities in the mixed air, achieving a filtering effect. After the filter plate has been used for a period of time, a drive motor drives a drive wheel to rotate the connecting frame, rotating the filter plate into a protective housing. Then, an air blowing hood reverses the airflow, blowing away the impurities blocked by the filter plate. This cycle of operation maintains the filter plate's permeability while the filter assembly is in operation.

Description

Technical Field

[0001] This utility model relates to the field of crude oil degassing technology, and in particular to a self-cleaning crude oil vacuum degassing filter assembly. Background Technology

[0002] Crude oil degassing separates and recycles light hydrocarbons such as methane, ethane, propane, and butane from crude oil, improving economic efficiency. Crude oil vacuum degassing involves placing crude oil in a sealed tank, removing the air, and reducing the pressure inside the tank to near a vacuum, thus separating the gas from the crude oil.

[0003] During the degassing process of crude oil, light hydrocarbons and some crude oil vapor need to be recovered. Before recovering the mixed gas, some impurities absorbed into the gas need to be filtered. The filter screen needs to be cleaned regularly to avoid clogging the gas flow channel. However, cleaning the filter screen requires the equipment to be shut down, which affects production efficiency. Therefore, we propose a self-cleaning crude oil vacuum degassing filter screen assembly to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a self-cleaning crude oil vacuum degassing filter assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The self-cleaning crude oil vacuum degassing filter assembly includes:

[0007] A connecting pipe, wherein both the upper and lower ends of the connecting pipe are provided with connecting flanges;

[0008] A filter screen structure is provided in the middle of the connecting pipe, and a cleaning component for cleaning the filter screen is provided near the filter screen structure in the connecting pipe.

[0009] Preferably, the connecting pipe has a groove in the middle, the filter structure includes a shaft rotatably connected to the side wall of the groove, a connecting frame is fixedly sleeved in the middle of the shaft, multiple mesh plates are detachably connected in the connecting frame, a clearance opening is opened in the side wall of the groove, the connecting frame is provided through the clearance opening, and a sealing gasket is fixedly connected to the inner wall of the connecting pipe near the clearance opening.

[0010] Preferably, the cleaning component includes a protective shell fixedly connected to a connecting pipe, a drive motor fixedly connected to one side of the protective shell, a drive wheel fixedly connected to the output end of the drive motor via a coupling, the drive wheel being rotatably connected to the inner wall of the protective shell, and the drive wheel abutting against the connecting frame, a blow pipe passing through the protective shell, the lower end of the blow pipe located inside the protective shell being connected to a blow hood, a receiving tray placed on the lower inner wall of the protective shell, and an exhaust port provided on one side of the protective shell.

[0011] Preferably, the inner diameter of the middle part of the connecting pipe is larger than the inner diameter of the upper and lower ends of the connecting pipe, and a receiving groove is provided on the inner wall of the connecting pipe near the connecting frame, with the edge of the connecting frame located within the receiving groove.

[0012] Preferably, the connecting frame has threaded holes, and the mesh plate is detachably connected to the connecting frame by bolts.

[0013] Preferably, an exhaust pipe is connected to the exhaust port, and a one-way valve is connected to the exhaust pipe.

[0014] Preferably, both the mesh plate and the air blowing hood are fan-shaped, and the air blowing hood is disposed against the mesh plate.

[0015] Preferably, the side wall of the connecting frame is provided with a surrounding anti-slip groove, and the drive wheel is made of rubber.

[0016] Preferably, a rubber pad is fixedly connected to the inner wall of the receiving groove, and the rubber pad is abutted against the connecting frame.

[0017] Preferably, the receiving tray is filled with water-based adhesive liquid.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, by setting a filter structure in conjunction with a cleaning component, uses the filter structure to filter mixed gas. The filter plate blocks impurities in the mixed air, thus achieving a filtering effect. After the filter plate has been used for a period of time, the drive motor drives the drive wheel to rotate the connecting frame, rotating the filter plate into the protective shell. Then, the air blowing hood blows the filter plate in the opposite direction, blowing away the impurities blocked by the filter plate. By repeating this operation, the filter plate can be continuously maintained while the filter component is working, without stopping the equipment in the middle, ensuring the long-term stable operation of the filter component.

[0020] 2. This utility model, by setting a receiving groove, avoids gaps between the inner wall of the connecting frame and the connecting pipe, which would cause unfiltered mixed gas to pass directly through the filter assembly, thus ensuring the effectiveness of the filter assembly. By setting an air blowing hood, the air force can be concentrated to blow away dirt from the screen, ensuring the cleaning effect of the screen and reducing the residue of impurities on the screen. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the self-cleaning crude oil vacuum degassing filter assembly proposed in this utility model.

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the self-cleaning crude oil vacuum degassing filter assembly proposed in this utility model.

[0023] Figure 3 This is a top-section structural diagram of the self-cleaning crude oil vacuum degassing filter assembly proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the connection frame structure of the self-cleaning crude oil vacuum degassing filter assembly proposed in this utility model.

[0025] Figure 5 This is a side sectional view of the connecting frame structure of the self-cleaning crude oil vacuum degassing filter assembly proposed in this utility model.

[0026] In the diagram: 1. Connecting pipe; 2. Connecting flange; 3. Shaft; 4. Connecting frame; 5. Mesh plate; 6. Sealing gasket; 7. Protective shell; 8. Drive motor; 9. Drive wheel; 10. Blowing pipe; 11. Blowing hood; 12. Receiving tray; 13. Exhaust port; 14. Bolt; 15. Exhaust pipe; 16. Anti-slip groove; 17. Rubber pad; 18. Clearance opening. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-5 A self-cleaning crude oil vacuum degassing filter assembly includes a connecting pipe 1, with connecting flanges 2 provided at both the upper and lower ends of the connecting pipe 1.

[0029] In this design, the connecting flange 2 can connect the connecting pipe 1 to the pipeline for conveying the mixed gas, thereby installing the filter assembly in the pipeline through which the mixed gas flows.

[0030] A filter structure is provided in the middle of the connecting pipe 1, and a cleaning component for cleaning the filter is provided near the filter structure in the connecting pipe 1.

[0031] Furthermore, the connecting pipe 1 has a groove in the middle, and the filter structure includes a shaft 3 rotatably connected to the groove. A connecting frame 4 is fixedly sleeved in the middle of the shaft 3. Multiple mesh plates 5 are detachably connected inside the connecting frame 4. A clearance opening 18 is opened on the side wall of the groove. The connecting frame 4 is movably connected through the clearance opening 18. A sealing gasket 6 is fixedly connected to the inner wall of the connecting pipe 1 near the clearance opening 18. The inner diameter of the middle part of the connecting pipe 1 is larger than the inner diameter of the upper and lower ends of the connecting pipe 1. A receiving groove is opened on the inner wall of the connecting pipe 1 near the connecting frame 4. The edge of the connecting frame 4 is located in the receiving groove.

[0032] The groove is recessed towards the center of the connecting pipe 1, and the inner diameter of the middle part of the connecting pipe 1 is relatively large, ensuring that the flow area of ​​the connecting pipe 1 changes little and ensuring the passage of the mixed gas. Sealing gaskets 6 are fixedly connected to the inner walls of both the upper and lower ends of the port 18. The upper sealing gasket 6 abuts against the upper surface of the mesh plate 5, but to prevent the lower sealing gasket 6 from scraping impurities from the mesh plate 5 into the connecting pipe 1, the lower sealing gasket 6 does not abut against the lower surface of the mesh plate 5 (i.e., the lower surface of the mesh plate 5 is higher than the bottom of the connecting frame 4). Therefore, the size of a single sealing gasket 6 is larger than the size of a single mesh plate 5, which ensures... When the connecting frame 4 rotates, the lower sealing gasket 6 can effectively seal the connecting pipe 1 while abutting against the connecting frame 4, preventing the mixed gas from passing through the relief port 18. The receiving groove is set to seal the edge of the connecting frame 4, preventing the mixed gas from passing through the gap between the connecting frame 4 and the inner wall of the connecting pipe 1, thus ensuring the filtration effect of the mixed gas. It should be noted that in this design, since the gas extraction pipe of the crude oil vacuum degassing equipment draws the gas out of the equipment and the gas extraction equipment is located above the crude oil vacuum degassing equipment, the mixed gas passes through the mesh plate 5 from bottom to top in this filter assembly.

[0033] Furthermore, the cleaning component includes a protective shell 7 fixedly connected to the connecting pipe 1. A drive motor 8 is fixedly connected to one side of the protective shell 7. The output end of the drive motor 8 is fixedly connected to a drive wheel 9 via a coupling. The drive wheel 9 is rotatably connected to the inner wall of the protective shell 7, and the drive wheel 9 abuts against the connecting frame 4. A blower pipe 10 is passed through the protective shell 7. The lower end of the blower pipe 10 located inside the protective shell 7 is connected to a blower hood 11. A receiving tray 12 is placed on the lower inner wall of the protective shell 7, and an exhaust port 13 is provided on one side of the protective shell 7. The receiving tray 12 is filled with water-based adhesive liquid. An exhaust pipe 15 is connected to the exhaust port 13, and a one-way valve is connected to the exhaust pipe 15.

[0034] The protective shell 7 seals the groove, creating a near-sealed space between the protective shell 7 and the groove. The drive motor 8 is an explosion-proof motor. In the petrochemical industry, due to the presence of large amounts of flammable and explosive gases and oil-gas mixtures, various equipment requires explosion protection. When the drive motor 8 is running, it drives the drive wheel 9 to rotate. The rotation of the drive wheel 9, through friction, drives the connecting frame 4 to rotate, thereby moving one of the mesh plates 5 below the air blowing hood 11. At this time, the blow pipe 10 blows out high-pressure air. As the high-pressure air passes through the mesh plate 5, it blows away impurities from the mesh openings, thus cleaning the mesh plate 5. Each blow operation cleans only one mesh plate 5. After cleaning one mesh plate 5, the drive motor 8, in conjunction with the drive wheel 9, moves the next mesh plate 5 below the air blowing hood 11, ultimately achieving a cyclical operation to clean the mesh plates 5 in turn. This process does not hinder the filter assembly from filtering the mixed gas. The screen plate 5 is cleaned promptly, and due to the high cleaning frequency, it is difficult for stubborn impurities to adhere to it, thus maintaining its long-term usability and preventing impurities from clogging the gas flow channels. The water-based adhesive is used to adsorb impurities blown down by the blown air, preventing them from being discharged through the exhaust port 13 and polluting the production environment. The water-based adhesive itself has a certain viscosity, which can effectively adsorb the impurities cleaned by the blown air, while its own viscosity ensures that the high-pressure air blown by the blown air will not blow them around. The exhaust port 13 is set to discharge the high-pressure air used for blown air. The one-way valve is set to prevent external dust from entering the protective shell 7 through the exhaust pipe 15 during holidays or shutdowns when there is no production schedule, thus preventing pollution and causing the adhesive to lose its viscosity and harden due to long-term exposure to the air (water-based adhesive will still harden if exposed to the air for a long time, and is used as a consumable for impurity adsorption in this solution, but waste should still be avoided).

[0035] Furthermore, the connecting frame 4 is provided with threaded holes, and the mesh plate 5 is detachably connected to the connecting frame 4 by bolts 14. After long-term use, the mesh plate 5 will also suffer irreversible damage. Using bolts 14 for connection makes it convenient for users to replace the mesh plate 5, and to replace the mesh plate 5 with different mesh sizes under different filtration requirements.

[0036] Furthermore, both the mesh plate 5 and the air blowing hood 11 are fan-shaped. The air blowing hood 11 is set against the mesh plate 5, and its shape is consistent with that of the mesh plate 5. This can improve cleaning efficiency when only one mesh plate 5 is blown clean at a time. The abutment between the air blowing hood 11 and the mesh plate 5 can ensure the blowing effect on the mesh plate 5 and prevent high-pressure air from passing through the gap between the mesh plate 5 and the air blowing hood 11, which would result in insufficient air pressure passing through the mesh.

[0037] Furthermore, the side wall of the connecting frame 4 is provided with a surrounding anti-slip groove 16, and the drive wheel 9 is made of rubber. The anti-slip groove 16 and the rubber drive wheel 9 are provided to ensure the cooperation between the drive wheel 9 and the connecting frame 4, and to prevent the drive wheel 9 from slipping between the drive wheel 9 and the connecting frame 4, which would cause the air blowing cover 11 to not be aligned with the mesh plate 5 and affect the cleaning effect.

[0038] Furthermore, a rubber pad 17 is fixedly connected to the inner wall of the receiving groove. The rubber pad 17 is movable and abuts against the connecting frame 4. The rubber pad 17 is provided on the inner walls of both the upper and lower ends of the receiving groove and abuts against the upper and lower surfaces of the edge area of ​​the connecting frame 4, so that the mixed gas cannot enter the receiving groove. This ensures that the mixed gas needs to pass through the mesh plate 5 before it can pass through the connecting pipe 1, thus ensuring the filtration effect of this filter assembly on the mixed gas.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning crude oil vacuum degassing filter assembly, characterized in that, include: Connecting pipe (1), with connecting flanges (2) provided at both the upper and lower ends of the connecting pipe (1); A filter structure is provided in the middle of the connecting pipe (1), and a cleaning component for cleaning the filter is provided near the filter structure in the connecting pipe (1). The connecting pipe (1) has a groove in the middle. The filter structure includes a shaft (3) rotatably connected to the side wall of the groove. A connecting frame (4) is fixedly sleeved in the middle of the shaft (3). Multiple mesh plates (5) are detachably connected inside the connecting frame (4). A clearance opening (18) is opened on the side wall of the groove. The connecting frame (4) passes through the clearance opening (18). A sealing gasket (6) is fixedly connected to the inner wall of the connecting pipe (1) near the clearance opening (18). The cleaning assembly includes a protective shell (7) fixedly connected to the connecting pipe (1), a drive motor (8) fixedly connected to one side of the protective shell (7), a drive wheel (9) fixedly connected to the output end of the drive motor (8) through a coupling, the drive wheel (9) being rotatably connected to the inner wall of the protective shell (7), and the drive wheel (9) abutting against the connecting frame (4), a blow pipe (10) passing through the protective shell (7), the lower end of the blow pipe (10) located inside the protective shell (7) being connected to an air blowing hood (11), a receiving tray (12) being placed on the lower inner wall of the protective shell (7), and an exhaust port (13) being provided on one side of the protective shell (7). Both the mesh plate (5) and the air blowing hood (11) are fan-shaped, and the air blowing hood (11) is set against the mesh plate (5).

2. The self-cleaning crude oil vacuum degassing filter assembly according to claim 1, characterized in that, The inner diameter of the middle part of the connecting pipe (1) is larger than the inner diameter of the upper and lower ends of the connecting pipe (1). The connecting pipe (1) has a receiving groove on the inner wall near the connecting frame (4), and the edge of the connecting frame (4) is located in the receiving groove.

3. The self-cleaning crude oil vacuum degassing filter assembly according to claim 2, characterized in that, The connecting frame (4) has threaded holes, and the mesh plate (5) is detachably connected to the connecting frame (4) by bolts (14).

4. The self-cleaning crude oil vacuum degassing filter assembly according to claim 3, characterized in that, The exhaust port (13) is connected to an exhaust pipe (15), and the exhaust pipe (15) is connected to a one-way valve.

5. The self-cleaning crude oil vacuum degassing filter assembly according to claim 3, characterized in that, The side wall of the connecting frame (4) is provided with a surrounding anti-slip groove (16), and the drive wheel (9) is made of rubber.

6. The self-cleaning crude oil vacuum degassing filter assembly according to claim 4, characterized in that, A rubber pad (17) is fixedly connected to the inner wall of the receiving groove, and the rubber pad (17) is abutted against the connecting frame (4).

7. The self-cleaning crude oil vacuum degassing filter assembly according to claim 3, characterized in that, The receiving tray (12) is filled with water-based adhesive liquid.

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