Drilling fracturing liquid supply switching device

Abstract

The utility model discloses a drilling fracturing liquid supply switching device which comprises an installation pipe and a pump body, the right end of the installation pipe is fixedly connected with the inlet end of the pump body, a discharging pipe is fixedly installed below the installation pipe, a fixing pipe is fixedly installed at the left end of the installation pipe, a water tank is fixedly installed on the fixing pipe, and a water outlet pipe is fixedly installed on the water tank. A mounting rod is fixedly mounted in the fixing pipe, a telescopic rod is slidably mounted in the mounting rod, a piston rod is slidably mounted in the telescopic rod, a fixing frame is fixedly mounted in the fixing pipe, and the fixing frame is slidably sleeved with a sliding plug; the arranged water tank is matched with the telescopic rod, the piston rod, the sliding plug and the like in the fixed pipe to flush residual impurities in the mounting pipe, residual fracturing fluid used in the previous stage in the mounting pipe is cleaned, and flushing water is discharged through the discharging pipe; and adverse effects on fracturing fluid supply caused by mixing of different fracturing fluids are avoided.

Description

Technical Field

[0001] This utility model relates to the field of fracturing fluid supply switching technology, specifically a drilling fracturing fluid supply switching device. Background Technology

[0002] In the exploration and extraction of resources such as oil and natural gas, well fracturing is a commonly used technical method. Well fracturing involves injecting high-pressure liquids or gases to create fractures in the rock, thereby increasing the permeability and production capacity of oil and gas. A well fracturing fluid supply switching device is a key piece of equipment used in oil and gas field fracturing operations, which is used to quickly switch between different fluid supply sources to ensure the continuity and efficiency of fracturing operations.

[0003] In existing fracturing fluid supply switching devices, different fracturing fluids all enter the subsequent supply through the same pipeline, inevitably leading to mixing between different fracturing fluids, which affects the supply effect. Furthermore, in existing technologies, fracturing fluid flows in the pipeline for a long time, and residual sand adheres to the inner wall of the pipeline, which is not easy to clean and affects the flow rate of the pipeline. To address these issues, we propose a drilling fracturing fluid supply switching device. Utility Model Content

[0004] The purpose of this invention is to provide a drilling fracturing fluid supply switching device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drilling fracturing fluid supply switching device, comprising an installation pipe and a pump body, wherein the right end of the installation pipe is fixedly connected to the inlet end of the pump body, a fluid outlet pipe is fixedly installed at the outlet end of the pump body, multiple sets of branch pipes are fixedly installed above the installation pipe, multiple sets of connecting pipes corresponding to the branch pipes are provided above the installation pipe, a rotary valve is provided between the branch pipes and the connecting pipes, a discharge pipe is fixedly installed below the installation pipe, a fixed pipe is fixedly installed at the left end of the installation pipe, a water tank is fixedly installed on the fixed pipe, an installation rod is fixedly installed inside the fixed pipe, a telescopic rod is slidably installed inside the installation rod, a piston rod is slidably installed inside the telescopic rod, a fixed frame is fixedly installed inside the fixed pipe, and a sliding plug is slidably sleeved on the fixed frame.

[0006] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed springs are fixedly sleeved on the fixing frame, and the two ends of the springs are fixedly connected to the sliding plug and the fixing frame respectively. A retaining ring is fixedly installed inside the fixing tube, and the sliding plug is movably engaged with the retaining ring. The water tank is located between the piston rod and the sliding plug.

[0007] As a further preferred embodiment of this technical solution, a screw is rotatably installed inside the mounting rod, and a screw tube is rotatably installed inside the telescopic rod. The right end of the screw passes through the telescopic rod and is threadedly connected to the telescopic rod, and the right end of the screw tube passes through the piston rod and is threadedly connected to the piston rod.

[0008] As a further preferred embodiment of this technical solution, the screw is provided with two sets of symmetrically distributed keyways, and the spiral tube is provided with two sets of symmetrically distributed key blocks. The key blocks are arranged correspondingly to the keyways, and the spiral tube is slidably sleeved with the screw through the key blocks.

[0009] As a further preferred embodiment of this technical solution, an installation ring is rotatably installed inside the installation tube, a scraper is fixedly installed on the installation ring, the scraper is fitted against the inner wall of the installation tube, a first toothed ring is sleeved on the installation ring, and a first gear is rotatably installed inside the installation tube, the first gear meshing with the first toothed ring.

[0010] As a further preferred embodiment of this technical solution, a scraper block is slidably sleeved on the scraper rod, and a lead screw is rotatably installed inside the scraper rod, the lead screw passing through the scraper block and being threadedly connected to the scraper block.

[0011] As a further preferred embodiment of this technical solution, a rotating ring is rotatably installed inside the discharge pipe, and a second toothed ring is sleeved on the rotating ring. Multiple sets of annularly distributed closed plates are rotatably installed inside the discharge pipe. The multiple sets of closed plates are rotatably connected to the discharge pipe through an installation shaft. A second gear is sleeved on the installation shaft, and the multiple sets of second gears are meshed with the second toothed ring.

[0012] This utility model provides a drilling fracturing fluid supply switching device, which has the following beneficial effects:

[0013] This invention connects the installation pipe to different fracturing fluid supply tanks via a connecting pipe. The pump and rotary valve work together to allow different fracturing fluids to enter the installation pipe according to actual supply needs. A water tank, along with a fixed telescopic rod, piston rod, and sliding plug, flushes out residual impurities in the installation pipe and removes residual fracturing fluid from the previous stage. The flushing water is then discharged through a discharge pipe, preventing the mixing of different fracturing fluids from negatively impacting the fracturing fluid supply.

[0014] This invention uses a scraper and scraper blocks to clean residual sand adhering to the inner wall of the installation pipe, reducing the long-term adhesion of sand in the fracturing fluid to the installation pipe during the fluid supply process and minimizing its negative impact on the flow of fluid. After the scraper cleans the sand and other solid impurities adhering to the inner wall of the installation pipe, the cleaning water entering from the water tank and fixed pipe flushes the cleaned impurities out through the discharge pipe. Furthermore, the sliding of the scraper blocks during the use of the scraper can clean impurities from the surface of the scraper. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the fixing tube of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram of A in the middle;

[0018] Figure 4 This is a schematic diagram of the scraper rod of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the discharge pipe of this utility model.

[0020] In the diagram: 1. Mounting pipe; 2. Pump body; 3. Discharge pipe; 4. Branch pipe; 5. Connecting pipe; 6. Rotary valve; 7. Discharge pipe; 8. Fixed pipe; 9. Water tank; 10. Mounting rod; 11. Telescopic rod; 12. Piston rod; 13. Screw; 14. Keyway; 15. Threaded tube; 16. Key block; 17. Fixing frame; 18. Spring; 19. Sliding plug; 20. Snap ring; 21. Mounting ring; 22. Scraper; 23. Scraper block; 24. Lead screw; 25. First gear ring; 26. First gear; 27. Rotary ring; 28. Second gear ring; 29. ​​Closing plate; 30. Mounting shaft; 31. Second gear. Detailed Implementation

[0021] 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.

[0022] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3As shown in this embodiment, a drilling fracturing fluid supply switching device includes an installation pipe 1 and a pump body 2. The right end of the installation pipe 1 is fixedly connected to the inlet end of the pump body 2, and a fluid outlet pipe 3 is fixedly installed at the outlet end of the pump body 2. Multiple sets of branch pipes 4 are fixedly installed above the installation pipe 1, and multiple sets of connecting pipes 5 corresponding to the branch pipes 4 are provided above the installation pipe 1. A rotary valve 6 is provided between the branch pipes 4 and the connecting pipes 5. A discharge pipe 7 is fixedly installed below the installation pipe 1. The installation pipe 1 is connected to different fracturing fluid supply tanks through the provided connecting pipes 5, and different fracturing fluids enter the installation pipe 1 according to the actual fluid supply requirements through the cooperation between the pump body 2 and the rotary valve 6. A fixed pipe 8 is fixedly installed at the left end of the installation pipe 1, and a water tank 9 is fixedly installed on the fixed pipe 8. An installation rod 10 is fixedly installed inside the fixed pipe 8, and a telescopic rod 11 is slidably installed inside the installation rod 10. A piston rod 12 is slidably installed inside the telescopic rod 11. A fixing frame 17 is fixedly installed inside the fixing tube 8. A sliding plug 19 is slidably sleeved on the fixing frame 17. Two sets of symmetrically distributed springs 18 are fixedly sleeved on the fixing frame 17. The two ends of the springs 18 are fixedly connected to the sliding plug 19 and the fixing frame 17, respectively. A retaining ring 20 is fixedly installed inside the fixing tube 8. The sliding plug 19 is movably engaged with the retaining ring 20. The water tank 9 is located between the piston rod 12 and the sliding plug 19. A screw rod 13 is rotatably installed inside the mounting rod 10. A screw tube 15 is rotatably installed inside the telescopic rod 11. The right end of the screw rod 13 passes through the telescopic rod 11 and is threadedly connected to the telescopic rod 11. The right end of the screw tube 15 passes through the piston rod 12 and is threadedly connected to the piston rod 12. Two sets of symmetrically distributed keys are provided on the screw rod 13. The spiral tube 15 is provided with two sets of symmetrically distributed key blocks 16, which are correspondingly arranged with the keyway 14. The spiral tube 15 is slidably connected to the screw 13 through the key blocks 16. When the fracturing fluid switching gap is adjusted, the three sets of rotary valves 6 are closed, and the motor in the mounting rod 10 is started to drive the screw 13 to rotate. Under the limiting action of the mounting rod 10, the telescopic rod 11 slides. Under the limiting action of the key blocks 16 and the keyway 14, the spiral tube 15, which slides with the telescopic rod 11, also rotates synchronously with the screw 13. Therefore, under the limiting action of the telescopic rod 11, the piston rod 12 slides in the fixed tube 8, pushing the cleaning water from the water tank 9 into the fixed tube 8 to the right end of the fixed tube 8, squeezing the sliding plug 19. After the sliding plug 19 moves away from the retaining ring 20, the cleaning water enters the mounting tube 1 to flush and clean the fracturing fluid remaining in the mounting tube 1.

[0023] like Figure 4 and Figure 5As shown, an installation ring 21 is rotatably installed inside the installation tube 1, and a scraper rod 22 is fixedly installed on the installation ring 21. The scraper rod 22 is fitted against the inner wall of the installation tube 1. A first toothed ring 25 is sleeved on the installation ring 21. A first gear 26 is rotatably installed inside the installation tube 1, and the first gear 26 meshes with the first toothed ring 25. A scraper block 23 is slidably sleeved on the scraper rod 22. A lead screw 24 is rotatably installed inside the scraper rod 22, and the lead screw 24 passes through the scraper block 23 and is threadedly connected to the scraper block 23. A rotating ring 27 is rotatably installed inside the discharge tube 7, and a second toothed ring 28 is sleeved on the rotating ring 27. Multiple sets of annularly distributed closed plates 29 are rotatably installed inside the discharge tube 7. The multiple sets of closed plates 29 are rotatably connected to the discharge tube 7 through an installation shaft 30. A second gear 31 is sleeved on the installation shaft 30. The second gear 31 is meshed with the second gear ring 28. The motor on the synchronous installation pipe 1 starts and drives the first gear 26 to rotate. In conjunction with the first gear ring 25, the installation ring 21 drives the scraper 22 to rotate on the installation pipe 1. The scraper 22 cleans the impurities adhering to the inner wall of the installation pipe 1. The motor in the synchronous scraper 22 drives the lead screw 24 to rotate. Under the limiting action of the scraper 22, the scraper block 23 slides on the scraper 22 to clean the impurities remaining on the scraper 22. The installation pipe 1 is set at a slight inclination. With the flushing of cleaning water, with the pump body 2 and the rotary valve 6 closed, the impurities and water flow into the discharge pipe 7. The motor in the discharge pipe 7 drives the installation shaft 30 to rotate. In conjunction with the second gear 31 and the second gear ring 28, multiple sets of closing plates 29 open synchronously to complete the discharge of impurities and cleaning water, which facilitates the switching of different fracturing fluids.

[0024] This utility model provides a drilling fracturing fluid supply switching device. The specific working principle is as follows: The installation pipe 1 is connected to different fracturing fluid supply tanks via the connecting pipe 5. Through the cooperation between the pump body 2 and the rotary valve 6, different fracturing fluids enter the installation pipe 1 according to the actual fluid supply requirements. During the fracturing fluid switching interval, the three sets of rotary valves 6 are closed. The motor in the installation rod 10 drives the screw 13 to rotate. Under the limiting action of the installation rod 10, the telescopic rod 11 slides. Under the limiting action of the key block 16 and the keyway 14, the screw tube 15, which slides with the telescopic rod 11, also rotates synchronously with the screw 13. Therefore, under the limiting action of the telescopic rod 11, the piston rod 12 slides in the fixed pipe 8, pushing the clean water entering the fixed pipe 8 from the water tank 9 towards the right end of the fixed pipe 8, squeezing the sliding plug 19. After the sliding plug 19 moves away from the retaining ring 20, clean water enters... The installation pipe 1 is flushed and cleaned of residual fracturing fluid. Simultaneously, the motor on the installation pipe 1 starts and drives the first gear 26 to rotate. This, in conjunction with the first toothed ring 25, causes the installation ring 21 to drive the scraper 22 to rotate on the installation pipe 1. The scraper 22 cleans the impurities adhering to the inner wall of the installation pipe 1. Simultaneously, the motor in the scraper 22 drives the lead screw 24 to rotate. Under the limiting action of the scraper 22, the scraper block 23 slides on the scraper 22 to clean the residual impurities on the scraper 22. The installation pipe 1 is set at a slight inclination. With the flushing of cleaning water, and with the pump body 2 and rotary valve 6 both closed, the impurities and water flow into the discharge pipe 7. The motor in the discharge pipe 7 drives the installation shaft 30 to rotate. This, in conjunction with the second gear 31 and the second toothed ring 28, causes multiple sets of closing plates 29 to open simultaneously, completing the discharge of impurities and cleaning water, facilitating the switching of different fracturing fluids.

[0025] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling fracturing fluid supply switching device, characterized in that: The system includes an installation pipe (1) and a pump body (2). The right end of the installation pipe (1) is fixedly connected to the inlet end of the pump body (2). A liquid outlet pipe (3) is fixedly installed at the outlet end of the pump body (2). Multiple sets of branch pipes (4) are fixedly installed above the installation pipe (1). Multiple sets of connecting pipes (5) corresponding to the branch pipes (4) are provided above the installation pipe (1). A rotary valve (6) is provided between the branch pipes (4) and the connecting pipes (5). A discharge pipe (7) is fixedly installed below the installation pipe (1). A fixed pipe (8) is fixedly installed at the left end of the installation pipe (1). A water tank (9) is fixedly installed on the fixed pipe (8). An installation rod (10) is fixedly installed inside the fixed pipe (8). A telescopic rod (11) is slidably installed inside the installation rod (10). A piston rod (12) is slidably installed inside the telescopic rod (11). A fixed frame (17) is fixedly installed inside the fixed pipe (8). A sliding plug (19) is slidably sleeved on the fixed frame (17).

2. The drilling fracturing fluid supply switching device according to claim 1, characterized in that: Two sets of symmetrically distributed springs (18) are fixedly sleeved on the fixed frame (17). The two ends of the springs (18) are fixedly connected to the sliding plug (19) and the fixed frame (17) respectively. A retaining ring (20) is fixedly installed inside the fixed tube (8). The sliding plug (19) is movably engaged with the retaining ring (20). The water tank (9) is located between the piston rod (12) and the sliding plug (19).

3. The drilling fracturing fluid supply switching device according to claim 1, characterized in that: A screw (13) is rotatably installed inside the mounting rod (10), and a screw tube (15) is rotatably installed inside the telescopic rod (11). The right end of the screw (13) passes through the telescopic rod (11) and is threadedly connected to the telescopic rod (11). The right end of the screw tube (15) passes through the piston rod (12) and is threadedly connected to the piston rod (12).

4. The drilling fracturing fluid supply switching device according to claim 3, characterized in that: The screw (13) has two sets of symmetrically distributed keyways (14), and the spiral tube (15) has two sets of symmetrically distributed key blocks (16). The key blocks (16) are correspondingly arranged with the keyways (14), and the spiral tube (15) is slidably connected to the screw (13) through the key blocks (16).

5. A drilling fracturing fluid supply switching device according to claim 1, characterized in that: An installation ring (21) is rotatably installed inside the installation tube (1). A scraper (22) is fixedly installed on the installation ring (21). The scraper (22) is fitted against the inner wall of the installation tube (1). A first toothed ring (25) is sleeved on the installation ring (21). A first gear (26) is rotatably installed inside the installation tube (1). The first gear (26) meshes with the first toothed ring (25).

6. The drilling fracturing fluid supply switching device according to claim 5, characterized in that: A scraper block (23) is slidably sleeved on the scraper rod (22), and a lead screw (24) is rotatably installed inside the scraper rod (22). The lead screw (24) passes through the scraper block (23) and is threadedly connected to the scraper block (23).

7. The drilling fracturing fluid supply switching device according to claim 1, characterized in that: A rotating ring (27) is rotatably installed inside the discharge pipe (7). A second toothed ring (28) is sleeved on the rotating ring (27). Multiple sets of annularly distributed closed plates (29) are rotatably installed inside the discharge pipe (7). The multiple sets of closed plates (29) are rotatably connected to the discharge pipe (7) through a mounting shaft (30). A second gear (31) is sleeved on the mounting shaft (30). The multiple sets of second gears (31) are meshed with the second toothed ring (28).

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