An oil exploitation water injection device with anti-blocking structure

Abstract

The utility model discloses a petroleum exploitation water injection device with anti -blocking structure, including water injection pump, the lateral surface of water injection pump is connected with water injection pipe, still include the shell, the upper and lower surface of shell all are connected with water injection pipe, the inside of shell is provided with anti -blocking structure, anti -blocking structure can pass through water flow impact stirring fan and drive the rotation of swivel block to make filter screen vibrate, anti -blocking structure includes stirring fan, the both ends of stirring fan rotatable mounting is in the boss side surface of shell inner wall side surface. The petroleum exploitation water injection device with anti -blocking structure, is provided with anti -blocking structure, water flow impact stirring fan, through stirring fan rotation, can avoid the impurity accumulation on filter screen, through the sliding frame of anti -backflow structure forms the resistance to water flow and the rotation plate intercepts water flow again, avoids the backflow of water flow, and sealing connection structure can make the sealing capsule circle inflation and water injection pipe connection is more close.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, specifically to a water injection device for oil extraction with an anti-clogging structure. Background Technology

[0002] During oilfield development, as reservoir energy declines, well production capacity also decreases. To restore well production, a water injection development model has gradually emerged, which uses water injection to increase reservoir energy. Water is injected into the reservoir through specialized injection wells to maintain or restore reservoir pressure, giving the reservoir a stronger driving force to improve extraction speed and recovery rate.

[0003] During water injection, impurities may be present in the water. These impurities can enter the oil and affect its quality. Filtration is necessary during water injection, which can easily lead to blockages inside the equipment. For example, a water injection device for oil wells with patent number CN202220463927.9 has an anti-backflow mechanism mounted on a support frame. This anti-backflow mechanism includes a sleeve, a piston, an mounting rod, and a connecting rod. The piston is located inside the sleeve, and both the inlet pipe and the injection pipe are connected to the sleeve. A first one-way valve is installed between the injection pipe and the sleeve, and a second one-way valve is installed between the inlet pipe and the sleeve. One end of the mounting rod is connected to the piston, and the other end is connected to the connecting rod via an installation mechanism. The other end of the connecting rod is connected to a drive mechanism. Although this device can prevent backflow, it does not solve the problem of impurities clogging the water flow. Utility Model Content

[0004] The purpose of this invention is to provide a water injection device for oil extraction with an anti-clogging structure, so as to solve the problem mentioned in the background art that impurities can easily cause blockage inside the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water injection device for oil extraction with an anti-clogging structure, including a water injection pump, a water injection pipe connected to the side surface of the water injection pump, and a housing, with water injection pipes connected to both the upper and lower surfaces of the housing. The housing is provided with an anti-clogging structure, which can cause the filter screen to vibrate by the water flow impacting the stirring fan and driving the rotating block to rotate.

[0006] Preferably, the anti-clogging structure includes a stirring fan, with both ends of the stirring fan rotatably mounted on the protruding side surface of the inner wall side surface of the outer shell. Rotating blocks are mounted on the outer surface of the concentric shafts at both ends of the stirring fan. A filter screen is correspondingly arranged below the stirring fan. The filter screen is installed on the lower surface of the protrusion on the inner wall side surface of the outer shell. A stop block is provided on the upper surface of the filter screen, and the stop block penetrates the lower surface of the protrusion on the inner wall side surface of the outer shell. A locking block is provided in the middle of the stop block, and a spring is installed on the lower surface of the locking block. A rotating block is correspondingly arranged above the locking block.

[0007] By adopting the above technical solution, impurities can be prevented from accumulating on the filter screen by rotating the stirring fan with an anti-clogging structure.

[0008] Preferably, the interior of the outer casing is provided with an anti-backflow structure, which can prevent backflow by sliding the sliding frame according to the direction of water flow.

[0009] By adopting the above technical solution, the anti-backflow structure can prevent water from flowing backward and causing low water injection efficiency.

[0010] Preferably, the anti-backflow structure includes a connecting plate, which is installed on the lower surface of the filter screen via a connecting rod. Rotating plates are rotatably connected to both sides of the connecting plate via rotating shafts. A torsion spring is installed on the rotating shaft of the rotating plate. A sliding frame is slidably installed through the lower surface of the outer shell. The side surface of the sliding frame is embedded and slidably installed in a sliding groove, which is installed on the inner wall side surface of the outer shell.

[0011] Using the above technical solution, the rotating plate of the anti-backflow structure can rotate to intercept the flow when the water flows upward.

[0012] Preferably, all surfaces of the sliding frame except the top surface are set to be open.

[0013] The above technical solution facilitates the downward flow of water.

[0014] Preferably, both the upper and lower surfaces of the outer casing are connected to a sealing connection structure, which can cause the sealing ring to expand when the screw is rotated.

[0015] The above technical solution is adopted to prevent water leakage.

[0016] Preferably, the sealing connection structure includes a button, which is rotatably connected to the front surface of the locking ring, and the other end of the button slides through the air tube. The air tube is connected to the sealing ring, which is made of an expandable sealing material, and a screw is installed through the outer end of the locking ring.

[0017] By adopting the above technical solution, the sealing ring can expand when the screw is rotated.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the oil well equipped with an anti-clogging structure uses a water injection device. 1. The oil extraction water injection device is equipped with an anti-clogging structure. When water is injected, the water contains impurities, which can easily cause blockage on the filter screen. Therefore, when water is injected, the water flow impacts the agitator fan, and the rotation of the agitator fan can prevent the accumulation of impurities on the filter screen. 2. Furthermore, while the agitator fan is rotating, the rotating block installed on the concentric shaft of the agitator fan also rotates simultaneously, indirectly engaging with the locking block, which strikes and vibrates the locking block. Under the action of the spring on the lower surface, the locking block retracts downward, causing the filter screen to vibrate continuously under the action of the locking block, so that impurities on the filter screen will not accumulate. 3. It is also equipped with an anti-backflow structure. When water flows back, the water will flow upward and push the sliding frame upward. The sliding frame partially blocks the water flow and at the same time lifts the rotating plates on both sides of the connecting plate upward, blocking the water flow again and preventing the water from flowing upward and forming a backflow.

[0019] 4. Furthermore, the torsion spring installed on the rotating shaft of the rotating plate can prevent the rotating plate from rotating upwards, and can also be pushed away by the water flow when the water flow is downwards, while it can intercept the flow when the water flow is upwards, and can also play a role in guiding the flow.

[0020] 5. Furthermore, a sealing connection structure is provided to seal the connection with the water injection pipe, preventing water from flowing out. After the water injection pipe is inserted into the locking ring, turning the screw allows the gas from the air pipe to flow into the sealing ring, causing the sealing ring to expand and connect more tightly with the water injection pipe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front surface structure of this utility model; Figure 2 This is a schematic diagram of the front cross-section structure of this utility model; Figure 3 This is a top view cross-sectional diagram of the trachea structure of this utility model; Figure 4 This is a top view cross-sectional structural diagram of the connecting plate of this utility model; Figure 5 This is a schematic diagram of the side cross-sectional structure of this utility model; Figure 6 This is a top view cross-sectional structural diagram of the stirring fan of this utility model.

[0022] In the diagram: 1. Water pump; 2. Water pipe; 3. Outer casing; 4. Agitator; 5. Rotating block; 6. Locking block; 7. Stop block; 8. Filter screen; 9. Connecting plate; 10. Rotating plate; 11. Torsion spring; 12. Sliding frame; 13. Slide groove; 14. Button; 15. Air pipe; 16. Sealing ring; 17. Locking ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a water injection device for oil extraction with an anti-clogging structure, including a water injection pump 1, a water injection pipe 2, a shell 3, a stirring fan 4, a rotating block 5, a locking block 6, a stop block 7, a filter screen 8, a connecting plate 9, a rotating plate 10, a torsion spring 11, a sliding frame 12, a sliding groove 13, a screw 14, an air pipe 15, a sealing ring 16, and a locking ring 17. Example 1

[0025] The oil extraction system employs a water injection device with an anti-clogging structure. This structure utilizes the rotation of the agitator fan 4 in conjunction with the vibration of the filter screen 8 to prevent clogging. Specifically: The side surface of the water pump 1 is connected to the water injection pipe 2, and it also includes a housing 3. The upper and lower surfaces of the housing 3 are both connected to the water injection pipe 2. The inside of the housing 3 is provided with an anti-clogging structure. The anti-clogging structure can drive the rotating block 5 to rotate by the water flow impacting the stirring fan 4, causing the filter screen 8 to vibrate. The anti-clogging structure includes the stirring fan 4. Both ends of the stirring fan 4 are rotatably installed on the protrusion side surface of the inner wall side surface of the housing 3. The outer surface of the concentric shaft at both ends of the stirring fan 4 is equipped with the rotating block 5. The filter screen 8 is correspondingly provided below the stirring fan 4. The filter screen 8 is installed on the lower surface of the protrusion on the inner wall side surface of the housing 3. The upper surface of the filter screen 8 is provided with a stop block 7, and the stop block 7 penetrates the lower surface of the protrusion on the inner wall side surface of the housing 3. The middle of the stop block 7 is provided with a locking block 6, and the lower surface of the locking block 6 is equipped with a spring. The upper part of the locking block 6 is correspondingly provided with the rotating block 5. like Figure 1 As shown, after the water pump 1 is turned on, water flows into the interior of the outer casing 3 through the water injection pipe 2, as... Figure 6 As shown, when impurities in the water pass through the agitator 4 installed on the protruding side surface of the inner wall of the outer casing 3, the water flow impacts the blades of the agitator 4, causing the agitator 4 to rotate. A filter screen 8 is installed below the agitator 4. After the filter screen 8 intercepts the impurities, residues remain on its upper surface, easily causing blockages. Therefore, when the agitator 4 rotates, the impurities on the filter screen 8 float and disperse, preventing them from accumulating and clogging under the impact of the water flow. Simultaneously, as... Figure 5As shown, the rotating block 5 installed on the outer surface of the concentric shaft of the stirring fan 4 is driven to rotate, and the rotating block 5 is indirectly engaged with the locking block 6. When the rotating block 5 rotates, it collides with the locking block 6, causing the locking block 6 to drive the filter screen 8 to vibrate under the action of the stop block 7. After the rotating block 5 collides with the locking block 6, it continues to rotate. The locking block 6 will retract downward under the impact, and then move upward under the action of the spring. This process is repeated, causing the filter screen 8 to vibrate and preventing the accumulation of impurities. Example 2

[0026] Based on Example 1, when the initial flow returns, the sliding frame 12 is impacted upwards by the water flow, causing the rotating plate 10 to move upwards, thus intercepting the flow. Specifically: The interior of the outer casing 3 is equipped with an anti-backflow structure. The anti-backflow structure can prevent backflow by sliding the sliding frame 12 according to the direction of water flow. The anti-backflow structure includes a connecting plate 9, which is installed on the lower surface of the filter screen 8 via a connecting rod. The two sides of the connecting plate 9 are rotatably connected to a rotating plate 10 via a rotating shaft. A torsion spring 11 is installed on the rotating shaft of the rotating plate 10. The sliding frame 12 is slidably installed through the lower surface of the outer casing 3. The side surface of the sliding frame 12 is embedded and slidably installed in a sliding groove 13. The sliding groove 13 is installed on the inner wall side surface of the outer casing 3. All surfaces of the sliding frame 12 except the upper surface are set to an open state. like Figure 1 As shown, when the water flows through the filter screen 8, it pushes the rotating plate 10, which is connected to the connecting plate 9 on the lower surface of the filter screen 8 by a rotating shaft, causing the rotating plate 10 to rotate downwards and tilt. Then, the water flows into the interior of the sliding frame 12 through the opening on the side wall of the sliding frame 12, and finally flows downwards through the opening on the lower surface of the sliding frame 12. When backflow occurs, the water will flow upwards from the water injection pipe 2 connected to the lower surface of the outer shell 3. The water will push the sliding frame 12 to slide upwards in the slide groove 13. At the same time, the upward movement of the sliding frame 12 will also push the rotating plate 10 upwards. Under the action of the torsion spring 11, the rotating plate 10 will rise and form a parallel state with the connecting plate 9, thus blocking the upward flow of water. Furthermore, a protrusion is provided on the inner wall side surface of the outer shell 3 to prevent the rotating plate 10 from continuing to flip upwards. At the same time, the close contact between the protrusion and the rotating plate 10 can further improve the sealing performance and prevent upward backflow. Example 3

[0027] Based on embodiments 1 and 2, a sealing connection structure is provided, which enables the sealing ring 16 to be tightly connected to the water injection pipe 2 while being fixed, specifically: Both the upper and lower surfaces of the outer shell 3 are connected to a sealing connection structure. The sealing connection structure can expand the sealing ring 16 while rotating the screw 14. The sealing connection structure includes the screw 14, which is rotatably connected to the front surface of the locking ring 17. The other end of the screw 14 slides through the air tube 15. The air tube 15 is connected to the sealing ring 16. The sealing ring 16 is made of an expandable sealing material. A screw is installed through the outer end of the locking ring 17. When connecting the water inlet pipe 2 to the outer casing 3, first rotate the screw that passes through the outer end of the locking ring 17 to clamp the water inlet pipe 2. Figure 3 As shown, then rotate the two screws 14 to make them slide in the air tube 15, compressing the airflow in the air tube 15 and causing the airflow to enter the sealing ring 16. The sealing ring 16 expands and clamps the water injection tube 2 more tightly, which can prevent water leakage.

[0028] Working principle: When using the oil extraction water injection device with anti-clogging structure, the anti-clogging structure can prevent the accumulation of impurities by rotating the stirring fan 4 and vibrating the filter screen 8. At the same time, the rotating plate 10 of the anti-backflow structure can intercept the backflow of water. The sealed connection structure can prevent water leakage, which increases the overall practicality.

[0029] 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 water injection device for oil extraction with an anti-clogging structure, comprising a water injection pump (1), wherein a water injection pipe (2) is connected to the side surface of the water injection pump (1), characterized in that: It also includes a housing (3), on the upper and lower surfaces of which are connected water injection pipes (2). The housing (3) has an anti-clogging structure inside, which can drive the rotating block (5) to rotate by water flow impacting the stirring fan (4), causing the filter screen (8) to vibrate.

2. The water injection device for oil exploitation with anti-blocking structure according to claim 1, characterized in that: The anti-clogging structure includes a stirring fan (4), with both ends of the stirring fan (4) rotatably mounted on the protrusion side surface of the inner wall side surface of the outer shell (3). A rotating block (5) is mounted on the outer surface of the concentric shaft at both ends of the stirring fan (4). A filter screen (8) is correspondingly provided below the stirring fan (4). The filter screen (8) is installed on the lower surface of the protrusion on the inner wall side surface of the outer shell (3). A stop block (7) is provided on the upper surface of the filter screen (8), and the stop block (7) penetrates the lower surface of the protrusion on the inner wall side surface of the outer shell (3). A locking block (6) is provided in the middle of the stop block (7), and a spring is installed on the lower surface of the locking block (6). A rotating block (5) is correspondingly provided above the locking block (6).

3. The water injection device for oil exploitation with anti-blocking structure according to claim 1, characterized in that: The outer shell (3) is provided with an anti-backflow structure, which can make the sliding frame (12) slide to block backflow by the direction of water flow.

4. The water injection device for oil exploitation with anti-blocking structure according to claim 3, characterized in that: The anti-backflow structure includes a connecting plate (9), which is installed on the lower surface of the filter screen (8) via a connecting rod. Rotating plates (10) are rotatably connected to both sides of the connecting plate (9) via rotating shafts. A torsion spring (11) is installed on the rotating shaft of the rotating plate (10). A sliding frame (12) is slidably installed through the lower surface of the outer shell (3). The side surface of the sliding frame (12) is embedded and slidably installed in a sliding groove (13). The sliding groove (13) is installed on the inner wall side surface of the outer shell (3).

5. The water injection device for oil exploitation with anti-blocking structure according to claim 4, characterized in that: The sliding frame (12) has all surfaces except the top surface set to open.

6. The water injection device for oil exploitation with anti-blocking structure according to claim 1, characterized in that: The upper and lower surfaces of the outer shell (3) are connected to a sealing connection structure, which can expand the sealing ring (16) while rotating the screw (14).

7. The water injection device for oil exploitation with anti-blocking structure according to claim 6, characterized in that: The sealing connection structure includes a screw (14), which is rotatably connected to the front surface of the locking ring (17), and the other end of the screw (14) slides through the air tube (15). The air tube (15) is connected to the sealing ring (16), which is made of an expandable sealing material. A screw is installed through the outer end of the locking ring (17).

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