Water injection supercharging device

Abstract

The utility model discloses a water injection pressurizing device, which relates to the technical field of oilfield water injection development and comprises a filter box, a first carrying disc and a second carrying disc are respectively fixed inside two ends of the filter box, and a filter cartridge is rotatably connected between the first carrying disc and the second carrying disc. A hollow sleeve is fixed on the inner side between the first carrying disc and the second carrying disc and located on the inner side of the filter cylinder, a first closed scraper is slidably connected to the inner side of the first carrying disc, a third closed scraper is slidably connected to the inner side of the second carrying disc, and a second closed scraper is arranged at the end, away from the third closed scraper, of the first closed scraper; a carrying base is fixed to the end, away from the first closed scraper, of the third closed scraper, and a driving assembly is arranged between the carrying base and the hollow sleeve. According to the water injection pressurizing device provided by the utility model, through the integral structural matching design, impurities on the inner side of the filter cartridge can be cleaned in a non-stop state in the water injection operation, and the filter cartridge does not need to be replaced, so that the water injection operation does not need to be interrupted.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field water injection development, in particular to a water injection pressure boosting device. Background Art

[0002] During the long-term exploitation of an oil field, as the energy of the oil layer itself is continuously consumed, the oil layer pressure continues to drop, resulting in a significant reduction in oil field production. In order to ensure the stability of the oil layer pressure so that the oil field can be efficiently exploited, water must be injected into the oil field through a water injection booster device to achieve efficient and stable recovery of the oil field.

[0003] For example, the Chinese utility model patent (CN219431813U) discloses an oilfield water injection and boosting device, which states: "A water pump placement plate is provided on the bottom side of the water storage cylinder for placing the water pump; the water pump includes at least a first boosting pump and a second boosting pump; two drainage pipes connected to the liquid inlet of the boosting pump are provided on the side of the water storage cylinder close to the water pump placement plate, and the liquid outlets of the boosting pumps are respectively connected to the water injection pipe, and a clamping mechanism for limiting and fixing the boosting pump is provided on the upper surface of the water pump placement plate, and the clamping mechanism includes a stop block integrated with the water pump placement plate, and connecting blocks fixed to the water pump placement plate are symmetrically provided on both sides of the stop block."

[0004] The above-mentioned device is equipped with two booster pumps as backup for each other, and can realize the removal and maintenance of the first booster pump or the second booster pump without stopping the operation state, so that the device can perform water injection operations without stopping during daily maintenance. However, impurities continue to accumulate in the filter screen during the water injection process, and the filter screen needs to be replaced regularly. Although the above-mentioned device is convenient for replacing the filter screen, it still needs to stop and interrupt the water injection operation during the replacement. For this reason, the present application proposes a water injection booster device. Utility Model Content

[0005] Based on this, it is necessary to provide a water injection booster device to address the above technical problems. Through the overall structural coordination design, the device can clean the impurities accumulated inside the filter cartridge without stopping the machine during the water injection operation, so that there is no need to replace the filter cartridge and thus no need to interrupt the water injection operation.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A water injection booster device, which is used in oil field water injection development;

[0008] The filter bag comprises a filter box, wherein the first and second carrying plates are respectively fixed inside the two ends of the filter box, and the filter cartridge is rotatably connected between the first and second carrying plates, and a hollow sleeve is fixed on the inner side between the first and second carrying plates and located inside the filter cartridge. The filter box is provided with a water inlet pipe at the upper end near one end of the first carrying plate, and the lower end of the water inlet pipe passes through the first carrying plate and extends to the inner side of the filter cartridge, and the first carrying plate is slidably connected to the first closed scraper inside, and the second closed scraper is slidably connected to the inner side of the second carrying plate, and a second closed scraper is provided at the end of the first closed scraper away from the third closed scraper, and connecting rods are symmetrically fixed between the first and second closed scrapers and between the first and third closed scrapers, and a carrying seat is fixed on the end of the third closed scraper away from the first closed scraper, and a drive assembly is provided between the carrying seat and the hollow sleeve.

[0009] As a preferred embodiment of the water injection and boosting device provided by the utility model, the driving assembly includes a screw, and the mounting seat is close to one end of the third closed scraper and is located on the inner side of the third closed scraper and is fixed with a screw, and the end of the screw away from the mounting seat passes through the hollow sleeve and is slidingly connected to the hollow sleeve, and a screw barrel is rotatably connected to the inner side of the hollow sleeve and located on the outer side of the screw, and the inner side of the screw barrel is threadedly connected to the screw, and a third spur gear is fixed to the outer side of the screw barrel, and a third motor is fixed to the inner side of the hollow sleeve and located on the outer side of the third spur gear, and a fourth spur gear is fixed to the output end of the third motor, and the fourth spur gear is meshed with the third spur gear.

[0010] As a preferred embodiment of the water injection and boosting device provided by the utility model, a guide column is fixed to one end of the carrying seat close to the third closed scraper and located on the inner side of the third closed scraper, and the end of the guide column away from the carrying seat passes through the hollow sleeve and is slidably connected to the hollow sleeve, a first spur gear is fixed to the outer side of the end of the filter cartridge close to the second carrying plate, a second motor is fixed to the inner side of the filter box and located on the outer side of the second carrying plate, a second spur gear is fixed to the output end of the second motor, and the second spur gear is meshed with the first spur gear.

[0011] As a preferred embodiment of the water injection and boosting device provided by the utility model, the first closed scraper, the second closed scraper, and the third closed scraper are all located on the outside of the hollow sleeve, and the outer sides of the first closed scraper, the second closed scraper, and the third closed scraper are all in contact with the inner side of the filter cartridge. A debris blocking inclined plate is fixed at the lower end of the filter box near one end of the water inlet pipe, and a drain outlet is provided inside the filter box and at the lower end of the debris blocking inclined plate.

[0012] As a preferred embodiment of the water injection and boosting device provided by the present invention, legs are symmetrically fixed to the bottom end of one end of the filter box, an L-shaped bracket is fixed to the bottom end of the other end of the filter box, and a supporting frame is fixed to the upper end of the L-shaped bracket away from one end of the filter box, and a spare boosting pump and a main boosting pump are respectively provided at the lower end and the upper end of the supporting frame, and the spare boosting pump and the main boosting pump are both provided with a liquid inlet at the end close to the filter box, and a liquid outlet at the end away from the filter box, a guide pipe is provided between the drain port and the two liquid inlets, a three-way pipe is provided between the two liquid outlets, and a water injection pipe is provided at the end of the three-way pipe away from the supporting frame.

[0013] As a preferred embodiment of the water injection and boosting device provided by the present invention, a first motor is fixed to the upper end of the L-shaped bracket close to one end of the filter box, the output end of the first motor passes through the guide pipe and is fixed with a water blocking plate, the outer side of the water blocking plate is fitted with the inner side of the guide pipe, and the output end of the first motor is rotatably connected to the guide pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The water injection boosting device provided by the utility model, through the overall structural coordination design, enables the device to clean the impurities accumulated inside the filter cartridge without stopping the water injection operation, so that there is no need to replace the filter cartridge and thus there is no need to interrupt the water injection operation. Combined with the structural design of the backup boosting pump and the main boosting pump, the device also does not need to be shut down for daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the water injection and boosting device provided by the utility model;

[0018] Figure 2 This is a structural diagram of the upper end of the L-shaped bracket of the water injection and boosting device provided by the utility model;

[0019] Figure 3 This is a structural diagram of the inner side of the filter box of the water injection and boosting device provided by the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the inner side of the filter cartridge of the water injection and boosting device provided by the utility model;

[0021] Figure 5 This is a structural diagram of the water injection and boosting device provided by the utility model after the first closed scraper, the second closed scraper, and the third closed scraper are moved;

[0022] Figure 6 This is a schematic structural diagram of the inner side of the hollow sleeve of the water injection and boosting device provided by the utility model.

[0023] The markings in the figure are as follows:

[0024] 1. Filter box; 2. Support legs; 3. L-shaped bracket; 4. Carrying frame; 5. Spare booster pump; 6. Main booster pump; 7. Diversion pipe; 8. First motor; 9. Water blocking tray; 10. Tee pipe; 11. Water injection pipe; 12. Debris retaining inclined plate; 13. First carrying plate; 14. Second carrying plate; 15. Filter cartridge; 16. First flat gear; 17. Second motor; 18. Second flat gear; 19. Hollow sleeve; 20. Water inlet pipe; 21. First closed scraper; 22. Second closed scraper; 23. Third closed scraper; 24. Connecting rod; 25. Carrying seat; 26. Guide column; 27. Screw; 28. Screw barrel; 29. ​​Third flat gear; 30. Third motor; 31. Fourth flat gear. DETAILED DESCRIPTION

[0025] As described in the background art, impurities continue to accumulate on the filter during the water filling process and the filter needs to be replaced regularly. Although the above device is convenient for replacing the filter, the water filling operation still needs to be interrupted during the replacement.

[0026] In order to solve this technical problem, the utility model provides a water injection boosting device, which is applied to oil field water injection development;

[0027] The filter box 1 comprises a first mounting plate 13 and a second mounting plate 14 fixed to the inside of both ends of the filter box 1, a filter cartridge 15 is rotatably connected between the first mounting plate 13 and the second mounting plate 14, a hollow sleeve 19 is fixed to the inner side between the first mounting plate 13 and the second mounting plate 14 and located inside the filter cartridge 15, and the upper end of the filter box 1 near one end of the first mounting plate 13 is provided with a water inlet pipe 20, the lower end of the water inlet pipe 20 passes through the first mounting plate 13 and extends to the inner side of the filter cartridge 15, and the inner side of the first mounting plate 13 is slidably connected to the inner side of the filter cartridge 15. There is a first closed scraper 21, and a third closed scraper 23 is slidably connected to the inner side of the second carrying plate 14. A second closed scraper 22 is provided at the end of the first closed scraper 21 away from the third closed scraper 23. Connecting rods 24 are symmetrically fixed between the first closed scraper 21 and the second closed scraper 22, and between the first closed scraper 21 and the third closed scraper 23. A carrying seat 25 is fixed at the end of the third closed scraper 23 away from the first closed scraper 21, and a driving assembly is provided between the carrying seat 25 and the hollow sleeve 19.

[0028] The water injection booster device provided by the present invention, through the overall structural coordination design, enables the device to clean the impurities accumulated inside the filter cartridge 15 without stopping the water injection operation, so that there is no need to replace the filter cartridge 15 and thus there is no need to interrupt the water injection operation.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] Example 1:

[0032] Please refer to Figure 1-6 A water injection and boosting device includes a filter box 1, wherein a first carrying plate 13 and a second carrying plate 14 are fixed inside both ends of the filter box 1, a filter cartridge 15 is rotatably connected between the first carrying plate 13 and the second carrying plate 14, a hollow sleeve 19 is fixed inside the filter cartridge 15 and between the first carrying plate 13 and the second carrying plate 14. In order to facilitate the introduction of water into the filter cartridge 15, an upper end of the filter box 1 near one end of the first carrying plate 13 is provided with a water inlet pipe 20, and the lower end of the water inlet pipe 20 passes through the first carrying plate 13 and extends to the inside of the filter cartridge 15;

[0033] In order to conveniently drive the filter cartridge 15 to rotate and thus accelerate filtration, a first spur gear 16 is fixed to the outside of one end of the filter cartridge 15 close to the second carrying plate 14. A second motor 17 is fixed to the inside of the filter box 1 and located outside the second carrying plate 14. A second spur gear 18 is fixed to the output end of the second motor 17. The second spur gear 18 is meshed and connected with the first spur gear 16.

[0034] When impurities accumulate inside the filter cartridge 15, in order to be able to clean the inside of the filter cartridge 15 without stopping the machine, so that the filter cartridge 15 does not need to be replaced and the water injection operation does not need to be interrupted, a first closed scraper 21 is slidably connected to the inside of the first carrying plate 13, and a third closed scraper 23 is slidably connected to the inside of the second carrying plate 14. A second closed scraper 22 is provided at the end of the first closed scraper 21 away from the third closed scraper 23. Connecting rods 24 are symmetrically fixed between the first closed scraper 21 and the second closed scraper 22 and between the first closed scraper 21 and the third closed scraper 23. A carrying seat 25 is fixed to the end of the third closed scraper 23 away from the first closed scraper 21. A driving assembly is provided between the carrying seat 25 and the hollow sleeve 19.

[0035] Specifically, the driving assembly includes a screw 27. The end of the mounting seat 25 is close to the third closed scraper 23 and is located inside the third closed scraper 23. The end of the screw 27 away from the mounting seat 25 passes through the hollow sleeve 19 and is slidably connected to the hollow sleeve 19. A screw barrel 28 is rotatably connected to the inside of the hollow sleeve 19 and located outside the screw 27. The inner side of the screw barrel 28 is threadedly connected to the screw 27. A third flat gear 29 is fixed to the outside of the screw barrel 28. A third motor 30 is fixed to the inside of the hollow sleeve 19 and located outside the third flat gear 29. A fourth flat gear 31 is fixed to the output end of the third motor 30. The fourth flat gear 31 is meshed and connected to the third flat gear 29.

[0036] In order to further improve the stability of the carrying seat 25 when it moves, a guide post 26 is fixed to one end of the carrying seat 25 close to the third closed scraper 23 and located inside the third closed scraper 23. The end of the guide post 26 away from the carrying seat 25 passes through the hollow sleeve 19 and is slidably connected to the hollow sleeve 19. The first closed scraper 21, the second closed scraper 22, and the third closed scraper 23 are all located outside the hollow sleeve 19. The outer sides of the first closed scraper 21, the second closed scraper 22, and the third closed scraper 23 are all in contact with the inner side of the filter cartridge 15.

[0037] Example 2:

[0038] The water injection and boosting device provided in Example 1 is further optimized. Specifically, Figure 1-5 As shown, in order to ensure that the device does not need to be shut down during routine maintenance, a support leg 2 is symmetrically fixed to the bottom end of one end of the filter box 1, and an L-shaped bracket 3 is fixed to the bottom end of the other end of the filter box 1. A carrier frame 4 is fixed to the upper end of the L-shaped bracket 3 away from the end of the filter box 1. A spare booster pump 5 and a main booster pump 6 are respectively provided at the lower end and the upper end of the carrier frame 4. The spare booster pump 5 and the main booster pump 6 are both provided with a liquid inlet at the end close to the filter box 1, and a liquid outlet is provided at the end away from the filter box 1.

[0039] When the impurities in the filter cartridge 15 move back and forth through the first closed scraper 21, the second closed scraper 22 and the third closed scraper 23 and are discharged to both ends of the filter box 1 respectively, in order to protect the standby booster pump 5 and the main booster pump 6 and prevent impurities from accumulating on the upper ends of the standby booster pump 5 and the main booster pump 6, a debris retaining inclined plate 12 is fixed to the lower end of the filter box 1 near one end of the water inlet pipe 20, and a drain port is opened inside the filter box 1 and at the lower end of the debris retaining inclined plate 12;

[0040] In order to facilitate the drainage of filtered water in the filter box 1 to the standby booster pump 5 or the main booster pump 6, a diversion pipe 7 is provided between the drain port and the two liquid inlets. When the water is pressurized by the standby booster pump 5 or the main booster pump 6, a tee pipe 10 is provided between the two liquid outlets to facilitate the discharge and water injection operation. The end of the tee pipe 10 away from the carrier frame 4 is provided with a water injection pipe 11;

[0041] In daily water injection operations, the main booster pump 6 is mainly used for boosting. In order to prevent the water discharged from the drain outlet into the guide pipe 7 from being diverted to the standby booster pump 5 through the guide pipe 7, a first motor 8 is fixed to the upper end of the L-shaped bracket 3 near one end of the filter box 1. The output end of the first motor 8 passes through the guide pipe 7 and is fixed with a water blocking disc 9. The outer side of the water blocking disc 9 is in contact with the inner side of the guide pipe 7, and the output end of the first motor 8 is rotatably connected to the guide pipe 7. When the main booster pump 6 fails and needs maintenance, the first motor 8 is started to control the water blocking disc 9 to rotate, thereby facilitating the removal of the blocking of the guide pipe 7 by the water blocking disc 9, thereby facilitating the diversion of the water in the guide pipe 7 to the standby booster pump 5.

[0042] The above electrical components are all electrically connected to a main controller and a power supply, wherein the main controller can be a conventional known device such as a computer for control, and the existing disclosed power connection technology will not be repeated here;

[0043] The use process of the water injection booster device provided by the present invention is as follows: During normal water injection operation, when it is necessary to clean the impurities accumulated in the filter cartridge 15, the third motor 30 is started to drive the fourth flat gear 31 to rotate, and the screw barrel 28 is driven to rotate through the engagement of the fourth flat gear 31 with the third flat gear 29, and then the threaded connection between the screw barrel 28 and the screw rod 27 is used to drive the carrier 25 to move in the direction away from the filter box 1 through the guidance of the guide column 26, so that the first closed scraper 21, the second closed scraper 22 and the third closed scraper 23 move synchronously, as shown in FIG. Figure 5 As shown, when the second closed scraper 22 moves to the inside of the first carrying plate 13 and the first closed scraper 21 moves to the inside of the second carrying plate 14, the output end of the third motor 30 is automatically controlled to rotate in the opposite direction, thereby driving the carrying seat 25 to reset, so that the first closed scraper 21, the second closed scraper 22 and the third closed scraper 23 are reset synchronously, completing the scraping and cleaning of impurities inside the filter cartridge 15. Only a small amount of water is lost during the short-term movement of the first closed scraper 21, the second closed scraper 22 and the third closed scraper 23, so that the filter cartridge 15 can be cleaned without stopping the machine, and there is no need to interrupt the water injection operation.

Claims

1. A water injection and boosting device, characterized in that: The invention comprises a filter box (1), wherein a first mounting plate (13) and a second mounting plate (14) are fixed inside the two ends of the filter box (1), a filter cartridge (15) is rotatably connected between the first mounting plate (13) and the second mounting plate (14), a hollow sleeve (19) is fixed inside the filter cartridge (15) and between the first mounting plate (13) and the second mounting plate (14), and a water inlet pipe (20) is provided at the upper end of the filter box (1) near one end of the first mounting plate (13), the lower end of the water inlet pipe (20) passes through the first mounting plate (13) and extends to the inside of the filter cartridge (15), and the first mounting plate (13) slides inside the filter cartridge (15). A first closed scraper (21) is connected, a third closed scraper (23) is slidably connected to the inner side of the second carrying plate (14), a second closed scraper (22) is provided at one end of the first closed scraper (21) away from the third closed scraper (23), connecting rods (24) are symmetrically fixed between the first closed scraper (21) and the second closed scraper (22), and between the first closed scraper (21) and the third closed scraper (23), a carrying seat (25) is fixed at one end of the third closed scraper (23) away from the first closed scraper (21), and a driving assembly is provided between the carrying seat (25) and the hollow sleeve (19).

2. The water injection and boosting device according to claim 1, characterized in that: The driving assembly comprises a screw (27), an end of the mounting seat (25) close to the third closed scraper (23) and located inside the third closed scraper (23) is fixed with the screw (27), an end of the screw (27) away from the mounting seat (25) passes through the hollow sleeve (19) and is slidably connected to the hollow sleeve (19), a screw barrel (28) is rotatably connected inside the hollow sleeve (19) and located outside the screw (27), the inner side of the screw barrel (28) is threadedly connected to the screw (27), a third flat gear (29) is fixed outside the screw barrel (28), a third motor (30) is fixed inside the hollow sleeve (19) and located outside the third flat gear (29), an output end of the third motor (30) is fixed with a fourth flat gear (31), and the fourth flat gear (31) is meshed and connected with the third flat gear (29).

3. The water injection and boosting device according to claim 2, characterized in that: A guide column (26) is fixed to one end of the mounting seat (25) close to the third closed scraper (23) and located inside the third closed scraper (23); an end of the guide column (26) away from the mounting seat (25) passes through the hollow sleeve (19) and is slidably connected to the hollow sleeve (19); a first spur gear (16) is fixed to the outside of one end of the filter cartridge (15) close to the second mounting plate (14); a second motor (17) is fixed to the inside of the filter box (1) and located outside the second mounting plate (14); a second spur gear (18) is fixed to the output end of the second motor (17); and the second spur gear (18) is meshedly connected to the first spur gear (16).

4. The water injection and boosting device according to claim 1, characterized in that: The first closed scraper (21), the second closed scraper (22), and the third closed scraper (23) are all located outside the hollow sleeve (19); the outer sides of the first closed scraper (21), the second closed scraper (22), and the third closed scraper (23) are all in contact with the inner side of the filter cartridge (15); a debris blocking inclined plate (12) is fixed to the lower end of the filter box (1) near one end of the water inlet pipe (20); and a drainage outlet is provided inside the filter box (1) and at the lower end of the debris blocking inclined plate (12).

5. The water injection and boosting device according to claim 4, characterized in that: The bottom end of one end of the filter box (1) is symmetrically fixed with a support leg (2), the bottom end of the other end of the filter box (1) is fixed with an L-shaped bracket (3), the upper end of the L-shaped bracket (3) away from the end of the filter box (1) is fixed with a carrier (4), the lower end and the upper end of the carrier (4) are respectively provided with a spare boosting pump (5) and a main boosting pump (6), the spare boosting pump (5) and the main boosting pump (6) are both provided with a liquid inlet at the end close to the filter box (1), and the spare boosting pump (5) and the main boosting pump (6) are both provided with a liquid outlet at the end away from the filter box (1), a guide pipe (7) is provided between the drain port and the two liquid inlets, a three-way pipe (10) is provided between the two liquid outlets, and a water injection pipe (11) is provided at the end of the three-way pipe (10) away from the carrier (4).

6. The water injection and pressure boosting device according to claim 5, characterized in that: A first motor (8) is fixed to the upper end of the L-shaped bracket (3) close to one end of the filter box (1); the output end of the first motor (8) passes through the flow guide pipe (7) and is fixed to a water blocking disc (9); the outer side of the water blocking disc (9) is in contact with the inner side of the flow guide pipe (7); and the output end of the first motor (8) is rotatably connected to the flow guide pipe (7).

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