Purification device for gathering and transportation of natural gas in oil field

Abstract

The utility model provides a purification device for gathering and transportation of oil field natural gas, which comprises a tank body, a gas inlet end and a gas outlet end, a plurality of filter cartridges are equidistantly arranged in an inner cavity of the tank body, a blanking mechanism is arranged in the middle of a filter cavity of the plurality of filter cartridges, and the filter cavity is used for filling activated carbon particles. The discharging mechanism is arranged in the middle of the filtering cavity in the filtering cylinder, active discharging of activated carbon particles filled in the filtering cavity is achieved, smooth discharging is guaranteed, and accumulation, blockage and residues of activated carbon are avoided, so that the discharging effect is improved, a pushing screw rod is driven to rotate through driving of a servo motor, and the discharging efficiency is improved. Through rotation of a material pushing screw rod, material pushing screw blades actively discharge activated carbon particles in a filtering cavity, and in the rotating process of the material pushing screw rod, filtering plates on the two sides of the filtering cavity are continuously impacted through a vibration assembly, so that the filtering plates vibrate, and the activated carbon particles adhering to the filtering plates are vibrated to fall off; therefore, the blanking effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield natural gas gathering and transportation, in particular to a purification device for oilfield natural gas gathering and transportation. Background Art

[0002] Oil and gas gathering and transportation is the process of gathering oil, associated natural gas, and other products produced from dispersed oil wells, treating and processing them, and then transporting qualified oil and natural gas to refineries and natural gas users, respectively. This process primarily includes oil and gas separation, oil and gas metering, crude oil dehydration, natural gas purification, crude oil stabilization, and light hydrocarbon recovery. Natural gas purification processes include amine filtration, activated carbon filtration, and mechanical filtration.

[0003] The prior art discloses a purification device for oilfield natural gas gathering and transportation (publication number: CN210458083U), which includes a tank body. The tank body is a horizontal empty tank structure, and the middle parts of the left and right end walls of the tank body are connected to gas pipelines. Filters are evenly installed in the inner cavity of the tank body, and the cavity between adjacent filter screens is filled with activated carbon particles. The top of the right end of the tank body is connected to a vent pipe, and the bottom of the tank body is evenly connected to a discharge pipe. The utility model divides the inner cavity of the tank body into equal parts through evenly arranged filter screens. Each group of areas separated by the filter screens corresponds to a group of feeding ports and discharge pipes, which is convenient for filling activated carbon particles. At the same time, it is convenient to replace each separated area separately, thereby improving the utilization rate of activated carbon particles and helping to reduce resource waste.

[0004] However, the above technical solution and the existing technology still have the following defects: during the use of the device, the container for containing the discarded activated carbon particles is placed under the discharge pipe, and the sealing valve of the discharge pipe is opened, so that the activated carbon particles in the filter cavity are automatically discharged into the container. However, since the activated carbon particles achieve adsorption and filtration effects in the filter cavity for a long time, the activated carbon particles will absorb moisture in the natural gas, which may cause adhesion between the activated carbon particles and between the activated carbon particles and the filter cavity, resulting in easy blockage of the discharge pipe during the automatic unloading process, affecting the unloading effect of the activated carbon particles. Utility Model Content

[0005] The purpose of the utility model is to provide a purification device for oilfield natural gas gathering and transportation to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A purification device for oilfield natural gas gathering and transportation, comprising a tank body, an air inlet end and an air outlet end, wherein the air inlet end and the air outlet end are respectively arranged at both ends of the tank body, and an air inlet valve is provided on the air inlet end and the air outlet end. A plurality of filter cartridges are equidistantly arranged in the inner cavity of the tank body, and a feeding mechanism is provided at the center of the filter cavity of the plurality of filter cartridges. The filter cavity is used for filling activated carbon particles, and the feeding mechanism is used for automatically feeding the activated carbon particles inside the filter cavity to ensure the effect of feeding the activated carbon particles. Filter plates are fixedly installed on both sides of the filter cavity, and the pore size of the filter plates is smaller than the diameter of the activated carbon particles.

[0008] Preferably, the upper and lower parts of the filter cartridge are respectively provided with a feed port and a discharge port, the feed port is connected to the inner cavity of the upper shell provided on the upper part of the tank body, and a feed pipe is provided on one side of the upper shell, the feed pipe is used for feeding activated carbon particles, and a feed valve and a cover plate are provided on the feed pipe.

[0009] Preferably, the discharge port is communicated with the inner cavity of the lower shell provided at the bottom of the tank body, a discharge pipe is provided at the bottom of the lower shell, and a sealing cover is detachably provided on the discharge pipe.

[0010] Preferably, the unloading mechanism includes a servo motor, a pushing screw rod and a vibration assembly. The servo motor is fixedly installed in the center of the upper shell, and the output end of the servo motor is connected and fixed to the top end of the pushing screw rod through a coupling. The pushing screw rod is arranged in the center of the filter chamber, and the bottom end of the pushing screw rod extends to the inside of the discharge pipe.

[0011] Preferably, the vibration assembly includes a fixed cylinder, a sliding column and a spring. The fixed cylinder is equidistantly arranged on both sides of the pushing screw rod, and the interior of the fixed cylinder is slidingly connected to the sliding column. A spring is fixedly installed between one end of the sliding column and the interior of the fixed cylinder.

[0012] Preferably, the vibration component also includes a hemispherical block, a hemispherical groove and a ball. The hemispherical block is fixedly mounted on the other end of the sliding column, and a hemispherical groove is provided inside the hemispherical block. The hemispherical groove is rollingly connected to the side wall of the ball.

[0013] Preferably, an exhaust pipe is provided at one end of the tank body, an exhaust valve is provided on the exhaust pipe, and the exhaust pipe is connected to the air pump through an external pipeline.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By arranging a feeding mechanism in the center of the filter chamber inside the filter cartridge, the activated carbon particles filled in the filter chamber can be actively fed, ensuring smooth feeding, avoiding blockage and residue of activated carbon, and thus improving the feeding effect. The servo motor is used to drive the pushing screw rod to rotate, and the pushing spiral blades actively feed the activated carbon particles in the filter chamber through the rotation of the pushing screw rod, and drive the vibration components evenly arranged on both sides to rotate during the rotation of the pushing screw rod. During the rotation of the vibration component, the filter plates on both sides of the filter chamber are continuously hit by the compression and resetting of the spring, causing the filter plates to vibrate and shake off the activated carbon particles adhered to the filter plates, avoiding the inconvenience of handling the activated carbon particles adhered to the filter plates, thereby improving the feeding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the blanking mechanism of the present utility model.

[0019] Figure 4 This is a schematic structural diagram of the vibration component of the present utility model.

[0020] Figure 5 This is a schematic diagram of the filter cartridge structure of the present utility model.

[0021] In the figure: 1. Tank body; 2. Air inlet end; 3. Air outlet end; 4. Exhaust pipe; 5. Filter cartridge; 6. Filter chamber; 7. Feed port; 8. Upper shell; 9. Feed pipe; 10. Discharge port; 11. Lower shell; 12. Discharge pipe; 13. Sealing cover; 14. Discharge mechanism; 141. Servo motor; 142. Push screw rod; 143. Vibration assembly; 1431. Fixed cylinder; 1432. Sliding column; 1433. Spring; 1434. Hemispherical block; 1435. Hemispherical groove; 1436. Ball; 15. Filter plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] Example 1:

[0025] A purification device for oilfield natural gas gathering and transportation comprises a tank body 1, an air inlet end 2 and an air outlet end 3, the air inlet end 2 and the air outlet end 3 are respectively arranged at both ends of the tank body 1, an exhaust pipe 4 is provided at one end of the tank body 1, an exhaust valve is provided on the exhaust pipe 4, and the exhaust pipe 4 is connected to the air pump through an external pipeline, and an air inlet valve is provided on the air inlet end 2 and the air outlet end 3, a plurality of filter cartridges 5 are equidistantly arranged in the inner cavity of the tank body 1, a discharge mechanism 14 is provided at the center of the filter cavity 6 of the plurality of filter cartridges 5, the filter cavity 6 is used for filling activated carbon particles, and the discharge mechanism 14 is used for automatically discharge the activated carbon particles inside the filter cavity 6 to ensure the discharge effect of the activated carbon particles, and filter plates 15 are fixedly installed on both sides of the filter cavity 6, and the pore size of the filter plate 15 is smaller than the diameter of the activated carbon particles.

[0026] The upper and lower parts of the filter cartridge 5 are respectively provided with a feed port 7 and a discharge port 10. The feed port 7 is communicated with the inner cavity of the upper shell 8 provided on the upper part of the tank body 1. A feed pipe 9 is provided on one side of the upper shell 8. The feed pipe 9 is used for feeding activated carbon particles, and a feed valve and a cover plate are provided on the feed pipe 9.

[0027] The discharge port 10 is communicated with the inner cavity of the lower shell 11 arranged at the bottom of the tank body 1. A discharge pipe 12 is provided at the bottom of the lower shell 11. A sealing cover 13 is detachably provided on the discharge pipe 12, and the sealing cover 13 is used to seal the discharge pipe 12.

[0028] The unloading mechanism 14 includes a servo motor 141, a pushing screw rod 142 and a vibration assembly 143. The servo motor 141 is fixedly installed in the center of the upper shell 8, and the output end of the servo motor 141 is connected and fixed to the top end of the pushing screw rod 142 through a coupling. The pushing screw rod 142 is arranged in the center of the filter chamber 6, and the bottom end of the pushing screw rod 142 extends to the inside of the discharge pipe 12.

[0029] The vibration assembly 143 includes a fixed cylinder 1431, a sliding column 1432 and a spring 1433. The fixed cylinder 1431 is equidistantly arranged on both sides of the push screw rod 142, and the interior of the fixed cylinder 1431 is slidably connected to the sliding column 1432. A spring 1433 is fixedly installed between one end of the sliding column 1432 and the interior of the fixed cylinder 1431. The vibration assembly 143 also includes a hemispherical block 1434, a hemispherical groove 1435 and a ball 1436. The hemispherical block 1434 is fixedly installed at the other end of the sliding column 1432, and a hemispherical groove 1435 is opened inside the hemispherical block 1434. The hemispherical groove 1435 and the ball 1436 are connected. The side wall rolling connection reduces the resistance when the ball 1436 contacts the filter plate 15. The vibration component 143 is set to achieve the impact on the filter plate 15 to generate vibration. In the initial state, the ball 1436 conflicts with the filter plate 15, and the sliding column 1432 in the fixed cylinder 1431 squeezes and compresses the spring 1433. When the vibration component 143 rotates, the spring 1433 is compressed when the ball 1436 contacts the filter plate 15, thereby achieving contact with the filter plate 15, impacting the filter plate 15, achieving vibration of the filter plate 15, and shaking off the activated carbon particles adhered to the filter plate 15.

[0030] In this embodiment, by arranging a filter cartridge 5 inside the tank body 1, filter plates 15 are arranged on both sides of the filter cavity 6 of the filter cartridge 5, and by filling the filter cavity 6 with activated carbon particles, multi-pass filtration of the natural gas passing through the inner cavity of the tank body 1 is achieved. By arranging a discharge mechanism 14 at the center of the filter cavity 6, the activated carbon particles filled in the filter cavity 6 are actively discharged, ensuring smooth discharge and avoiding accumulation of activated carbon particles in the discharge port 10 or the discharge pipe 12, thereby improving the discharge effect. The servo motor 141 is driven to drive the activated carbon particles. The pushing screw rod 142 rotates, and the pushing spiral blade actively discharges the activated carbon particles in the filter chamber 6 through the rotation of the pushing screw rod 142, and drives the vibration components 143 evenly arranged on both sides to rotate during the rotation of the pushing screw rod 142. During the rotation of the vibration component 143, it will hit the filter plates 15 on both sides of the filter chamber 6, causing the filter plates 15 to vibrate, and shake off the activated carbon particles adhered to the filter plates 15, avoiding the inconvenience of handling the activated carbon particles adhered to the filter plates 15, thereby improving the discharge effect.

[0031] Working principle: First, open the feed valve and cover on the feed pipe 9, fill the activated carbon particles into the filter cavity 6 in the filter cartridge 5, close the feed valve and cover, and the natural gas enters the inner cavity of the tank body 1 from the air inlet end 2 of the tank body 1, and is filtered and purified by multiple activated carbon particles. After being filtered by the activated carbon particles, the natural gas is discharged from the air outlet end 3 at the other end of the tank body 1. The more impurities are adsorbed by the activated carbon particles near the air inlet end 2, when the activated carbon near the air inlet end 2 needs to be replaced, the air inlet valves on the air inlet end 2 and the air outlet end 3 are opened, and then the exhaust pipe 4 is used to absorb the remaining natural gas in the tank body 1 through the air pump connected to the external pipeline. After the absorption is completed, the container used to hold the discarded activated carbon particles is placed at the discharge end. Below the tube 12, open the sealing cover 13 on the discharge pipe 12, and then drive the servo motor 141 to drive the pushing screw rod 142 and the vibration component 143 to rotate in the filter chamber 6, so as to realize active discharge of the activated carbon particles in the filter chamber 6. The rotating vibration component 143 will perform intermittent collisions with the filter plates 15 on both sides to realize the vibration of the filter plates 15, and shake off the activated carbon particles adhered thereto, thereby ensuring the smoothness of the discharge and improving the discharge effect. After the activated carbon particles are discharged into the container, the activated carbon particles of the core are loaded into the filter chamber 6 to achieve the filtering effect. The utility model is convenient for individually replacing each separated area during use, thereby improving the utilization rate of the activated carbon particles and helping to reduce the waste of resources.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification device for oilfield natural gas gathering and transportation, comprising a tank body (1), an air inlet end (2) and an air outlet end (3), characterized in that: The air inlet end (2) and the air outlet end (3) are respectively arranged at two ends of the tank body (1), and an air inlet valve is provided on the air inlet end (2) and the air outlet end (3). A plurality of filter cartridges (5) are equidistantly arranged in the inner cavity of the tank body (1), and a feeding mechanism (14) is provided in the center of the filter cavity (6) of the plurality of filter cartridges (5). The filter cavity (6) is used for filling activated carbon particles. The feeding mechanism (14) is used for automatically feeding the activated carbon particles inside the filter cavity (6) to ensure the effect of feeding the activated carbon particles. Filter plates (15) are fixedly installed on both sides of the filter cavity (6), and the pore size of the filter plate (15) is smaller than the diameter of the activated carbon particles.

2. The oilfield natural gas gathering and transportation purification device according to claim 1, characterized in that: The filter cartridge (5) is provided with a feed port (7) and a discharge port (10) at the upper and lower parts thereof, respectively. The feed port (7) is communicated with an inner cavity of an upper shell (8) provided at the upper part of the tank body (1). A feed pipe (9) is provided on one side of the upper shell (8). The feed pipe (9) is used for feeding activated carbon particles, and a feed valve and a cover plate are provided on the feed pipe (9).

3. The purification device for oilfield natural gas gathering and transportation according to claim 2, characterized in that: The discharge port (10) is communicated with an inner cavity of a lower shell (11) provided at the bottom of the tank body (1); a discharge pipe (12) is provided at the bottom of the lower shell (11); and a sealing cover (13) is detachably provided on the discharge pipe (12).

4. The oilfield natural gas gathering and transportation purification device according to claim 1, characterized in that: The unloading mechanism (14) includes a servo motor (141), a pushing screw rod (142) and a vibration assembly (143). The servo motor (141) is fixedly installed at the center of the upper shell (8), and the output end of the servo motor (141) is connected and fixed to the top end of the pushing screw rod (142) through a coupling. The pushing screw rod (142) is arranged at the center of the filter chamber (6), and the bottom end of the pushing screw rod (142) extends to the inside of the discharge pipe (12).

5. The oilfield natural gas gathering and transportation purification device according to claim 4, characterized in that: The vibration component (143) includes a fixed cylinder (1431), a sliding column (1432) and a spring (1433). The fixed cylinder (1431) is equidistantly arranged on both sides of the push screw rod (142), and the interior of the fixed cylinder (1431) is slidably connected to the sliding column (1432). The spring (1433) is fixedly installed between one end of the sliding column (1432) and the interior of the fixed cylinder (1431).

6. The oilfield natural gas gathering and transportation purification device according to claim 5, characterized in that: The vibration assembly (143) further includes a hemispherical block (1434), a hemispherical groove (1435) and a ball (1436). The hemispherical block (1434) is fixedly mounted on the other end of the sliding column (1432), and a hemispherical groove (1435) is provided inside the hemispherical block (1434). The hemispherical groove (1435) is in rolling connection with the side wall of the ball (1436).

7. The purification device for oilfield natural gas gathering and transportation according to claim 1, characterized in that: An exhaust pipe (4) is provided at one end of the tank body (1), an exhaust valve is provided on the exhaust pipe (4), and the exhaust pipe (4) is connected to an air pump via an external pipeline.

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