Gas-liquid mixed transportation pressurizing draw-off pump for oil and gas field
By designing a gravel trap filter and a motor-driven screw conveyor system, the problem of gravel wear in oil wells of gas-liquid mixed-transport pumps in oil and gas fields was solved, achieving effective gravel settling and filtration, ensuring pump safety and lifespan, and simplifying the production process.
Patent Information
- Application Number
- CN202511883480.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-02-10
AI Technical Summary
When a gas-liquid pump used in an oil and gas field encounters an oil well with a large amount of gravel, the gravel is sucked into the pump along with the produced fluid, causing wear and corrosion of components such as the impeller and pump casing, which affects normal production.
A system comprising a gas-liquid mixing pump, a gravel collection filter, and pipelines was designed. The gravel collection filter includes a collection box, a rotating shaft, a filter screen, and a motor. Gravel is intercepted by the filter screen and scraper structure, and the gravel is discharged by a screw conveyor driven by the motor.
Effective sedimentation and filtration of gravel ensures the safety and lifespan of gas-liquid pumps, simplifies the production process, reduces initial investment and operating costs, and improves oil recovery.
Smart Images
Figure CN121497638A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of gas-liquid mixed transport pump technology, specifically a gas-liquid mixed transport booster pump for oil and gas fields. Background Technology
[0002] The gas-liquid mixture booster pump for oil and gas fields is a key piece of equipment specifically designed to solve the problem of transporting produced fluids from low-pressure, high-gas-content oil and gas wells. Its core lies in the innovative impeller and pump casing design, which can effectively handle gas-liquid mixtures with a gas content of up to 50% or even higher, overcome the gas binding phenomenon caused by gas, and significantly improve the pumping and pressurization capacity. Compared with traditional methods, it can directly pump the gas-liquid mixture from the wellhead or seabed to the gathering and transportation pipeline or surface processing facilities without the need for a special gas-liquid separation device, greatly simplifying the production process, reducing initial investment and operating costs, and improving crude oil recovery rate. It is an important efficiency-enhancing and energy-saving equipment in modern oil and gas field development.
[0003] While gas-liquid pumps used in oil and gas fields can effectively handle oil-gas mixtures with high gas content during well operations, they face serious challenges when the well contains a large amount of gravel (i.e., fine rock particles). These gravels may be sucked into the pump along with the produced fluid. Due to the strong impact and abrasiveness of the high-speed flowing gas-liquid mixture inside the pump chamber, the fine but hard gravel particles will repeatedly impact and scrape the surfaces of key components such as the impeller and pump casing, causing severe wear and corrosion. This leads to a rapid decline in pump efficiency and may even result in impeller damage, bearing wear, and seal failure, seriously affecting the normal production of the oil well. Therefore, improvements are needed to address these issues. Summary of the Invention
[0004] To achieve the above objectives, the present invention provides the following technical solution: a gas-liquid mixed-transport booster pump for oil and gas fields, comprising a gas-liquid mixed-transport pump, a gravel trap filter, and a pipeline. The gravel trap filter is connected to the inlet of the gas-liquid mixed-transport pump, and the pipeline is connected to the inlet of the gravel trap filter. The gravel trap filter includes a trap box, the upper part of one end of which is connected to the inlet of the gas-liquid mixed-transport pump, and the upper part of the other end of which is connected to the pipeline. A rotating shaft is rotatably mounted inside the trap box, and three circular filter screens are equidistantly installed on one side of the rotating shaft surface. A gearbox is installed at the other end of the trap box. The gearbox is connected between the rotating shaft and the first motor. A concave arc collection trough is opened inside the lower part of the collection box. Three connecting slots are opened between the top of the concave arc collection trough and the bottom of the collection box. A sealing partition plate is installed on the upper part of the concave arc collection trough. The rotating shaft is connected to the sealing partition plate through a transmission. A spiral conveying shaft located at the lower part of the concave arc collection trough is rotatably installed at one end of the concave arc collection trough. A second motor connected to one end of the spiral conveying shaft is installed at the other end of the collection box. A discharge pipe connected to the concave arc collection trough is installed at the lower part of one end of the collection box. An electric control valve is installed at one end of the discharge pipe.
[0005] Preferably, the cavity inside the collection box is a cylindrical structure, and the pore size of the three circular filter screens decreases sequentially starting from the circular filter screen near the gearbox. The circular filter screen near the gearbox divides the interior of the collection box into a sedimentation chamber. Three scrapers are fixedly installed at the bottom inside the collection box, and the three scrapers are in contact with one side of the three circular filter screens respectively.
[0006] Preferably, the upper part of the concave arc collecting groove is provided with sealing partition slots on both sides, and the lower part of the collecting box is provided with a transmission cavity communicating with one of the sealing partition slots. The sealing partition plate is installed between the two sealing partition slots and the transmission cavity. Two grooves are symmetrically opened on one side of the top of the sealing partition plate, and a toothed plate is fixedly installed inside the two grooves.
[0007] Preferably, an adjusting shaft is rotatably installed inside the transmission cavity, and two gears are fixedly installed on the surface of the adjusting shaft. The two gears are located inside two grooves and mesh with a toothed plate. One end of the adjusting shaft extends movably to the outside of one end of the collection box and is fixedly installed with a gear.
[0008] Preferably, a transmission component is installed at the lower part of one end of the collection box. The transmission component includes two square frames fixedly installed on the collection box. An I-shaped sliding strip is installed between the two square frames. A U-shaped block is fixedly installed at the bottom of the I-shaped sliding strip. An I-shaped sliding strip is movably installed inside the U-shaped block. A toothed plate is fixedly installed at the bottom of the I-shaped sliding strip. The toothed plate is meshed with a gear.
[0009] Preferably, a toothed plate three is fixedly installed on the top of the H-shaped sliding bar two, a drive shaft is rotatably installed through one side of the upper part of the U-shaped block, a gear three that meshes with the toothed plate three is fixedly installed at one end of the drive shaft inside the U-shaped block, a gear four is fixedly installed at one end of the drive shaft outside the U-shaped block, and a toothed plate four that meshes with the gear four is fixedly installed at the lower part of one end of the collection box.
[0010] Preferably, a reciprocating pin is fixedly installed at one end of the top of the I-shaped sliding bar, and a touch switch for adjusting the second motor and the electric control valve is installed at the lower part of one end of the collection box.
[0011] Preferably, a large gear is rotatably mounted on one end of the collection box, and an inverted L-shaped plate is fixedly mounted on one end of the collection box. A circular plate that coincides with the axis of the large gear is rotatably mounted on the lower part of the inner side of the inverted L-shaped plate. A conical gear ring is fixedly mounted on the opposite side of the large gear and the circular plate, and an actuating rod is fixedly mounted on the opposite side of the large gear and the circular plate.
[0012] Preferably, a bevel gear meshing between two conical gear rings is rotatably mounted on the top of the inner side of the inverted L-shaped plate, and one end of the rotating shaft extends movably through to one end of the collection box and is fixedly mounted with a turntable. The circumferential surface of the turntable is fixedly mounted with arc-shaped transmission teeth that match the large gear.
[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) The gas-liquid mixed transport booster pump used in this oil and gas field has a gravel collection and filtration treatment structure. This gravel collection and filtration treatment structure can settle and filter the pumped gravel, and can also collect and discharge the settled and filtered gravel in a concentrated manner, thereby effectively ensuring the continuity of gravel collection and filtration, as well as the safety and life of the gas-liquid mixed transport pump. In addition, the gravel collection and filtration treatment structure is simple in design, convenient to use, and stable and reliable in adjustment operation. Its performance can meet the usage requirements of the gas-liquid mixed transport pump. (2) When the gas-liquid mixed pump is started to extract oil and gas, the pipeline will draw crude oil with gravel into the inside of the collection box; at this time, the sealing partition plate is located between one of the sealing partition slots and the inside of the transmission cavity, so that the top of the concave arc collection tank is connected to the bottom of the inside of the collection box through three connecting slots; when the crude oil enters the inside of the collection box, the larger and heavier gravel will automatically settle to the bottom of the sedimentation chamber and be collected into the inside of the concave arc collection tank through the connecting slots, and then be intercepted and filtered again by three circular filter interception nets with different filter apertures, and the crude oil discharged by the gas-liquid mixed pump will not contain gravel; at the same time, the first motor is started synchronously when the oil is transported, and the first motor will slowly drive the rotating shaft and the three circular filter interception nets to rotate through the deceleration of the gearbox. During the rotation of the three circular filter interception nets, the three scrapers will scrape the intercepted gravel down, so that the gravel is collected into the inside of the concave arc collection tank through the connecting slots, thus effectively ensuring the continuity of the interception and filtration of the three circular filter interception nets; (3) When the rotating shaft rotates slowly, the rotating shaft will drive the turntable and the arc-shaped transmission teeth to rotate slowly. The slowly rotating arc-shaped transmission teeth will drive the large gear to rotate intermittently. The intermittent rotation of the large gear will drive the conical gear ring on it to rotate. The rotation of the conical gear ring will drive the other conical gear ring to rotate through the bevel gear. The rotation of the other conical gear ring will drive the circular plate to rotate. At this time, the rotation direction of the circular plate is opposite to the rotation direction of the large gear. The circular plate and the large gear rotating in opposite directions will drive the two levers to rotate in circles. When the lever on the large gear contacts the reciprocating pin during its circular rotation, it pushes the I-shaped sliding bar one to move towards the touch switch inside the two square sleeves. The movement of the I-shaped sliding bar one will drive the U-shaped block, the I-shaped sliding bar two, the toothed plate two, the drive shaft and the gear four to move. The movement of the gear four will cause it to roll and rotate on the toothed plate four. The rotation of the gear four will drive the drive shaft and the gear three to rotate. The rotation of the gear three will drive the toothed plate three to move, causing the toothed plate three to drive the I-shaped sliding bar two to move again inside the U-shaped block. As the second sliding bar moves along with the first sliding bar, it will be pushed again inside the U-shaped block, thereby increasing the displacement. The movement of the second sliding bar will drive the second toothed plate to move, causing the second toothed plate to drive the second gear to rotate. The rotation of the second gear will drive the adjusting shaft and the two first gears to rotate. The rotation of the two first gears will drive the two first toothed plates to move horizontally, causing the sealing partition plate to move between the two sealing partition slots, effectively separating and sealing the concave arc collection groove and the three connecting grooves, so that the inside of the collection box can continue to carry out gravel deposition and interception filtration operations. When the arc-shaped transmission teeth drive the large gear once, causing the lever on the large gear to move and separate from the reciprocating pin and stop, the lever on the circular plate will move synchronously and stop on one side of the reciprocating pin and contact the reciprocating pin. At this time, the H-shaped sliding bar stops and contacts the touch switch. Then, the touch switch controls the second motor and the electric control valve to start through the controller. The opening of the electric control valve opens the discharge pipe, and the start of the second motor will drive the screw conveyor shaft to rotate. The rotation of the screw conveyor shaft will transport the gravel collected in the concave arc collection trough into the discharge pipe and discharge it. When the arc-shaped transmission gear rotates again, the actuating rod on the circular plate pushes the reciprocating pin, causing it to return to its original position. First, the I-shaped sliding bar 1 separates from the touch switch, thus stopping the second motor from rotating. At the same time, the electric control valve closes the discharge pipe. Then, the return and reset of the reciprocating pin drives the I-shaped sliding bar 1, the U-shaped block, the I-shaped sliding bar 2, the toothed plate 2, the transmission shaft, and the gear 4 to return to their original positions. Finally, the gear 2 moves horizontally through the adjusting shaft, the two gears 1, and the two toothed plates to move the sealing partition plate from the inside of one sealing partition slot to the inside of the other sealing partition slot. This allows the gravel deposited and cleaned inside the collection box to be concentrated again into the concave arc collection tank through the three connecting slots. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.
[0015] In the attached diagram: Figure 1 This is a front view schematic diagram of the gas-liquid mixed transport booster pump for oil and gas fields according to the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of a partial structure; Figure 3 For the present invention Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 For the present invention Figure 3 Schematic diagram of local structure Figure 1 ; Figure 5 For the present invention Figure 3 Schematic diagram of local structure Figure 2 ; Figure 6 For the present invention Figure 2 Schematic diagram of partial side view structure Figure 1 ; Figure 7 For the present invention Figure 2 Schematic diagram of partial side view structure Figure 2 ; Figure 8 This is a top view of the large gear and circular plate of the present invention. Figure 9 This is a schematic diagram of the cross-sectional structure of the collection box of the present invention; Figure 10 For the present invention Figure 2 A schematic diagram of a partial side profile; Figure 11 For the present invention Figure 10 A schematic diagram of a partial structure; In the diagram: 1. Gas-liquid mixed transport pump; 2. Gravel collection filter; 3. Pipeline; 4. Collection box; 5. Rotating shaft; 6. Circular filter screen; 7. Gearbox; 8. First motor; 9. Concave arc collection trough; 10. Connecting trough; 11. Sealing partition plate; 12. Screw conveyor shaft; 13. Second motor; 14. Discharge pipe; 15. Electric control valve; 16. Scraper; 17. Sealing partition slot; 18. Transmission cavity; 19. Groove; 20. Toothed plate one; 21. Adjusting shaft; 22. 23. Gear 2; 24. Square sleeve; 25. I-beam sliding bar 1; 26. U-shaped block; 27. I-beam sliding bar 2; 28. Gear plate 2; 29. Gear plate 3; 30. Drive shaft; 31. Gear 3; 32. Gear 4; 33. Gear plate 4; 34. Reciprocating pin; 35. Touch switch; 36. Large gear; 37. Inverted L-shaped plate; 38. Round plate; 39. Conical gear ring; 40. Actuating lever; 41. Bevel gear; 42. Turntable; 43. Arc-shaped transmission gear. Detailed Implementation
[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0017] Example 1, by Figures 1 to 11 The present invention includes a gas-liquid mixing pump 1, a gravel trap filter 2, and a pipeline 3. The gravel trap filter 2 is connected to the inlet of the gas-liquid mixing pump 1, and the pipeline 3 is connected to the inlet of the gravel trap filter 2.
[0018] The gravel trap filter 2 includes a trap box 4. The upper part of one end of the trap box 4 is connected to the inlet of the gas-liquid mixing pump 1, and the upper part of the other end of the trap box 4 is connected to a pipe 3. A rotating shaft 5 is rotatably mounted inside the trap box 4. Three circular filter screens 6 are equidistantly installed on one side of the surface of the rotating shaft 5. The internal cavity of the trap box 4 has a cylindrical structure. The pore size of the three circular filter screens 6 decreases sequentially from the one closest to the gearbox 7, thus effectively performing graded interception and filtration to prevent gravel accumulation. The circular filter screen 6 near the gearbox 7 divides the interior of the collection box 4 into a sedimentation chamber. The sedimentation chamber allows larger and heavier gravel entering the collection box 4 through the pipe 3 to automatically settle to the bottom of the collection box 4. Three scrapers 16 are fixedly installed at the bottom of the collection box 4. The three scrapers 16 contact one side of the three circular filter screens 6 respectively to scrape and intercept the gravel, thereby effectively ensuring the continuous interception and filtration of the circular filter screens 6. The scraped gravel will be deposited to the bottom of the collection box 4 through the three connecting grooves 10.
[0019] The other end of the collection box 4 is equipped with a gearbox 7 and a first motor 8. The gearbox 7 is connected between the rotating shaft 5 and the first motor 8. A concave arc collection groove 9 is opened inside the lower part of the collection box 4. Three connecting grooves 10 are opened between the top of the concave arc collection groove 9 and the bottom of the collection box 4. A horizontally adjustable sealing partition plate 11 is installed on the upper part of the concave arc collection groove 9. The rotating shaft 5 is connected to the sealing partition plate 11. A spiral conveying shaft 12 located at the lower part of the concave arc collection groove 9 is rotatably installed at one end of the concave arc collection groove 9. A second motor 13 connected to one end of the spiral conveying shaft 12 is installed at the other end of the collection box 4. A discharge pipe 14 connected to the concave arc collection groove 9 is installed at the lower part of one end of the collection box 4. An electric control valve 15 is installed at one end of the discharge pipe 14.
[0020] In Embodiment 2, based on Embodiment 1, sealing and separating slots 17 are provided on both sides of the upper part of the concave arc collecting trough 9. The lower part of the collecting box 4 has a transmission cavity 18 that communicates with one of the sealing and separating slots 17. The sealing and separating plate 11 is installed between the two sealing and separating slots 17 and the transmission cavity 18. The sealing and separating plate 11 and the two sealing and separating slots 17 can effectively separate the collecting box 4 and the concave arc collecting trough 9. Two grooves 19 are symmetrically opened on one side of the top of the sealing and separating plate 11. A toothed plate 20 is fixedly installed inside the two grooves 19.
[0021] An adjusting shaft 21 is rotatably installed inside the transmission cavity 18. Two gears 22 are fixedly installed on the surface of the adjusting shaft 21. The two gears 22 are located inside the two grooves 19 and mesh with the toothed plate 20. One end of the adjusting shaft 21 extends movably to the outside of one end of the collection box 4 and is fixedly installed with a gear 23, thereby effectively adjusting the sealing partition plate 11. Specifically, when the gas-liquid mixed pump 1 is started to extract oil and gas, the pipeline 3 will draw crude oil with gravel into the inside of the collection box 4; at this time, the sealing partition plate 11 is located between one of the sealing partition slots 17 and the inside of the transmission cavity 18, so that the top of the concave arc collection tank 9 is connected to the bottom of the inside of the collection box 4 through three connecting slots 10. When crude oil enters the collection box 4, larger and heavier gravels will automatically settle to the bottom of the sedimentation chamber and be collected in the concave arc collection tank 9 through the connecting channel 10. Then, the gravels in the crude oil will be intercepted and filtered again through the circular filter interception net 6 with three different filter apertures. The crude oil discharged through the gas-liquid mixed transport pump 1 will not contain gravels. Simultaneously, the first motor 8 is started during oil transfer. The first motor 8, through the deceleration of the transmission 7, slowly drives the rotating shaft 5 and the three circular filter screens 6 to rotate. During the rotation, the three circular filter screens 6 scrape the intercepted gravel off through the three scrapers 16, so that the gravel is collected in the concave arc collection tank 9 through the connecting groove 10, thereby effectively ensuring the continuous interception and filtration of the three circular filter screens 6.
[0022] In Example 3, based on Example 2, a transmission component is installed at the lower part of one end of the collection box 4. The transmission component includes two square frames 24 fixedly installed on the collection box 4. An I-beam sliding strip 25 is installed between the two square frames 24. A U-shaped block 26 is fixedly installed at the bottom of the I-beam sliding strip 25. An I-beam sliding strip 27 is movably installed inside the U-shaped block 26. A toothed plate 28 is fixedly installed at the bottom of the I-beam sliding strip 27. The toothed plate 28 meshes with a gear 23. A toothed plate 29 is fixedly installed on the top of the moving bar 27. A drive shaft 30 is rotatably installed through one side of the upper part of the U-shaped block 26. A gear 31 that meshes with the toothed plate 29 is fixedly installed at one end of the drive shaft 30 inside the U-shaped block 26. A gear 4 32 is fixedly installed at the other end of the drive shaft 30 outside the U-shaped block 26. A toothed plate 4 33 that meshes with the gear 4 32 is fixedly installed at the lower part of one end of the collection box 4. This can effectively drive the adjusting shaft 21 and the gear 23 to rotate and adjust.
[0023] A reciprocating pin 34 is fixedly installed at one end of the top of the I-shaped sliding bar 25. A touch switch 35 for adjusting the second motor 13 and the electric control valve 15 is installed at the lower part of one end of the collection box 4. A large gear 36 is rotatably installed at one end of the collection box 4, and an inverted L-shaped plate 37 is fixedly installed at one end of the collection box 4. A circular plate 38 that coincides with the axis of the large gear 36 is rotatably installed on the lower part of the inner side of the inverted L-shaped plate 37. A conical gear ring 39 is fixedly installed on the opposite sides of the large gear 36 and the circular plate 38. A lever 40 is fixedly installed on the opposite sides of the large gear 36 and the circular plate 38. The length of the two levers 40 is less than the distance between the midpoint of the reciprocating pin 34 and the large gear 36 and the circular plate 38. At the same time, the length of the two levers 40 is greater than the distance between the surface of the reciprocating pin 34 and the large gear 36 and the circular plate 38, so that the reciprocating pin 34 can be effectively moved and adjusted.
[0024] A bevel gear 41, meshing between two conical gear rings 39, is rotatably mounted on the top of the inner side of the inverted L-shaped plate 37. One end of the rotating shaft 5 extends movably through to the outside of one end of the collection box 4 and is fixedly mounted on a turntable 42. An arc-shaped transmission tooth 43 matching the large gear 36 is fixedly mounted on the circumferential surface of the turntable 42.
[0025] Specifically, when the rotating shaft 5 rotates slowly, it drives the turntable 42 and the arc-shaped transmission gear 43 to rotate slowly. The slowly rotating arc-shaped transmission gear 43 intermittently drives the large gear 36 to rotate. The intermittent rotation of the large gear 36 drives the conical gear ring 39 on it to rotate. The rotation of the conical gear ring 39 drives another conical gear ring 39 to rotate through the bevel gear 41. The rotation of the other conical gear ring 39 drives the circular plate 38 to rotate. At this time, the rotation direction of the circular plate 38 is opposite to the rotation direction of the large gear 36. The circular plate 38 and the large gear 36 rotating in opposite directions drive the two levers 40 to rotate in circles. When the lever 40 on the large gear 36 contacts the reciprocating pin 34 during its rotation, it pushes the I-shaped sliding bar 25 to move towards the touch switch 35 inside the two square frames 24. The movement of the I-shaped sliding bar 25 will drive the U-shaped block 26, the I-shaped sliding bar 27, the toothed plate 28, the transmission shaft 30, and the gear 4 32 to move. The movement of the gear 4 32 will cause it to roll and rotate on the toothed plate 4 33. The rotation of the gear 4 32 will drive the transmission shaft 30 and the gear 3 31 to rotate. The rotation of the gear 3 31 will drive the toothed plate 3 29 to move, causing the toothed plate 3 29 to drive the I-shaped sliding bar 27 to move again inside the U-shaped block 26. As the second H-shaped sliding bar 27 moves along with the first H-shaped sliding bar 25, it will be pushed again inside the U-shaped block 26, thereby increasing the displacement. The movement of the second H-shaped sliding bar 27 will drive the second toothed plate 28 to move, so that the second toothed plate 28 will drive the second gear 23 to rotate. The rotation of the second gear 23 will drive the adjusting shaft 21 and the two gears 22 to rotate. The rotation of the two gears 22 will drive the two toothed plates 20 to move the sealing partition plate 11 horizontally, so that the sealing partition plate 11 moves between the two sealing partition slots 17 and effectively separates and seals the concave arc collection groove 9 and the three connecting grooves 10, so that the inside of the collection box 4 can continue to carry out gravel deposition and interception filtration operations. When the arc-shaped transmission tooth 43 drives the large gear 36 once, causing the actuating rod 40 on the large gear 36 to move and separate from the reciprocating pin 34, the actuating rod 40 on the circular plate 38 will move synchronously and stop to one side of the reciprocating pin 34 and contact the reciprocating pin 34. At this time, the I-shaped sliding bar 25 stops moving and contacts the touch switch 35. Then, the touch switch 35 controls the second motor 13 and the electric control valve 15 to start through the controller. The opening of the electric control valve 15 opens the discharge pipe 14, and the start of the second motor 13 will drive the screw conveyor shaft 12 to rotate. The rotation of the screw conveyor shaft 12 will transport the gravel collected in the concave arc collection trough 9 to the discharge pipe 14 for discharge. When the arc-shaped transmission gear 43 rotates again, the actuating rod 40 on the circular plate 38 will push the reciprocating pin 34 to return to its original position. First, the I-shaped sliding bar 25 will separate from the touch switch 35, thereby stopping the second motor 13 from rotating. At the same time, the electric control valve 15 will close the discharge pipe 14. Then, the return and reset of the reciprocating pin 34 will drive the I-shaped sliding bar 25, U-shaped block 26, I-shaped sliding bar 27, toothed plate 28, transmission shaft 30 and gear 4 32 to return to their original positions. Finally, the gear 23 will move the sealing partition plate 11 horizontally through the adjusting shaft 21, two gears 22 and two toothed plates 20, so that the sealing partition plate 11 moves from the inside of one of the sealing partition slots 17 to the inside of another sealing partition slot 17, so that the gravel deposited and cleaned inside the collection box 4 will be concentrated into the concave arc collection tank 9 through the three connecting grooves 10. By intermittently reciprocating the sliding bar 25, the sealing partition plate 11 can effectively perform separation and release operations, thereby effectively ensuring that the collection box 4 can continuously collect gravel and effectively discharge gravel.
[0026] This gas-liquid mixed-transport booster pump for oil and gas fields features a gravel trapping and filtration structure. This structure can settle and filter the pumped gravel, and simultaneously collect and discharge the settled and filtered gravel. This effectively ensures the continuity of gravel trapping and filtration, as well as the safety and lifespan of the gas-liquid mixed-transport pump. Furthermore, the gravel trapping and filtration structure is simple in design, convenient to use, and stable and reliable in adjustment. Its performance meets the requirements of the gas-liquid mixed-transport pump.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A gas-liquid mixed-transport booster pump for oil and gas fields, comprising a gas-liquid mixed-transport pump (1), a gravel trap filter (2), and a pipeline (3), characterized in that: The gravel trap filter (2) is connected to the inlet of the gas-liquid mixing pump (1), and the pipe (3) is connected to the inlet of the gravel trap filter (2). The gravel trap filter (2) includes a trap box (4). The upper part of one end of the trap box (4) is connected to the inlet of the gas-liquid mixing pump (1), and the upper part of the other end of the trap box (4) is connected to the pipe (3). A rotating shaft (5) is rotatably installed inside the trap box (4). Three circular filter screens (6) are installed at equal intervals on one side of the surface of the rotating shaft (5). A gearbox (7) and a first motor (8) are installed at the other end of the trap box (4). The gearbox (7) is connected between the rotating shaft (5) and the first motor (8). A concave arc collection groove (9) is opened in the lower part of the trap box (4). The top of the concave arc collection groove (9) is... Three connecting slots (10) are provided between the bottom of the collection box (4) and the bottom of the collection box (4). A sealing partition plate (11) is installed on the upper part of the concave arc collection trough (9). The rotating shaft (5) is connected to the sealing partition plate (11) through transmission. A spiral conveying shaft (12) located at the lower part of the concave arc collection trough (9) is rotatably installed at one end of the concave arc collection trough (9). A second motor (13) connected to one end of the spiral conveying shaft (12) is installed at the other end of the collection box (4). A discharge pipe (14) connected to the concave arc collection trough (9) is installed at the lower part of one end of the collection box (4). An electric control valve (15) is installed at one end of the discharge pipe (14).
2. The gas-liquid mixed transport booster pump for oil and gas fields according to claim 1, characterized in that: The cavity inside the collection box (4) is cylindrical. The three circular filter screens (6) have progressively smaller pore sizes, starting from the one closest to the gearbox (7). The circular filter screens (6) closest to the gearbox (7) divide the inside of the collection box (4) into sedimentation chambers. Three scrapers (16) are fixedly installed at the bottom inside the collection box (4). The three scrapers (16) are in contact with one side of the three circular filter screens (6).
3. The gas-liquid mixed transport booster pump for oil and gas fields according to claim 1, characterized in that: The upper part of the concave arc collecting groove (9) is provided with sealing partition slots (17) on both sides. The lower part of the collecting box (4) is provided with a transmission cavity (18) that communicates with one of the sealing partition slots (17). The sealing partition plate (11) is installed between the two sealing partition slots (17) and the transmission cavity (18). Two grooves (19) are symmetrically opened on one side of the top of the sealing partition plate (11). A toothed plate (20) is fixedly installed inside the two grooves (19).
4. The gas-liquid mixed transport booster pump for oil and gas fields according to claim 3, characterized in that: An adjusting shaft (21) is rotatably installed inside the transmission cavity (18). Two gears (22) are fixedly installed on the surface of the adjusting shaft (21). The two gears (22) are located inside the two grooves (19) respectively and mesh with the toothed plate (20). One end of the adjusting shaft (21) extends movably to the outside of one end of the collection box (4) and is fixedly installed with a gear (23).
5. A gas-liquid mixed-transport booster pump for oil and gas fields according to claim 4, characterized in that: A transmission component is installed at the lower part of one end of the collection box (4). The transmission component includes two square frames (24) fixedly installed on the collection box (4). An I-shaped sliding strip (25) is installed between the two square frames (24). A U-shaped block (26) is fixedly installed at the bottom of the I-shaped sliding strip (25). An I-shaped sliding strip (27) is movably installed inside the U-shaped block (26). A toothed plate (28) is fixedly installed at the bottom of the I-shaped sliding strip (27). The toothed plate (28) meshes with a gear (23).
6. The gas-liquid mixed transport booster pump for oil and gas fields according to claim 5, characterized in that: The top of the I-shaped sliding bar 2 (27) is fixedly installed with a toothed plate 3 (29). A drive shaft (30) is rotatably installed through one side of the upper part of the U-shaped block (26). A gear 3 (31) that meshes with the toothed plate 3 (29) is fixedly installed at one end of the drive shaft (30) inside the U-shaped block (26). A gear 4 (32) is fixedly installed at one end of the drive shaft (30) outside the U-shaped block (26). A toothed plate 4 (33) that meshes with the gear 4 (32) is fixedly installed at the lower part of one end of the collection box (4).
7. A gas-liquid mixed-transport booster pump for oil and gas fields according to claim 5, characterized in that: A reciprocating pin (34) is fixedly installed at one end of the top of the I-shaped sliding bar (25), and a touch switch (35) for adjusting the second motor (13) and the electric control valve (15) is installed at the lower part of one end of the collection box (4).
8. A gas-liquid mixed-transport booster pump for oil and gas fields according to claim 7, characterized in that: A large gear (36) is rotatably mounted on one end of the collection box (4), and an inverted L-shaped plate (37) is fixedly mounted on one end of the collection box (4). A circular plate (38) that coincides with the axis of the large gear (36) is rotatably mounted on the lower part of the inner side of the inverted L-shaped plate (37). A conical gear ring (39) is fixedly mounted on the opposite side of the large gear (36) and the circular plate (38), and a lever (40) is fixedly mounted on the opposite side of the large gear (36) and the circular plate (38).
9. A gas-liquid mixed-transport booster pump for oil and gas fields according to claim 8, characterized in that: The top of the inner side of the inverted L-shaped plate (37) is rotatably mounted with a bevel gear (41) meshing between two conical gear rings (39). One end of the rotating shaft (5) extends movably through to the outside of one end of the collection box (4) and is fixedly mounted with a turntable (42). The circumferential surface of the turntable (42) is fixedly mounted with an arc-shaped transmission tooth (43) that matches the large gear (36).