A kill manifold with a multi-stage filtration structure

Abstract

This invention provides a kill manifold with a multi-stage filtration structure, relating to the field of kill manifold technology. It includes a main pipe, a transfer block, and branch pipes. One end of the main pipe is connected to one end of the transfer block. A branch pipe is installed on the upper surface of the transfer block. A rotating cavity is provided inside the transfer block. An inlet channel and a outlet channel are respectively provided on both sides of the rotating cavity. The main pipe communicates with the rotating cavity through the inlet channel. The upper end of the rotating cavity communicates with the branch pipe through the outlet channel. A filter disc is rotatably installed inside the rotating cavity. A filter channel is provided inside the filter disc. First filter screens are symmetrically arranged at both ends of the filter channel. A mounting hole is provided at the center of the upper surface of the filter disc, communicating with the filter channel. A second filter screen is installed inside the mounting hole. In this invention, when fluid passes through the filter channel, large particles of sand and gravel are first intercepted by the first filter screen, and then small particles of sand and gravel are intercepted by the second filter screen. This solves the problem that a single filter screen cannot handle sand and gravel of different particle sizes simultaneously, thereby reducing the amount of sand and gravel in the fluid and improving the filtration effect.

Description

Technical Field

[0001] This invention relates to the field of kill manifold technology, and in particular to a kill manifold with a multi-stage filtration structure. Background Technology

[0002] In oil and gas extraction operations, the kill manifold, as the core equipment of the well control system, plays a crucial role in pumping kill fluid into the wellbore and restoring the bottom hole pressure balance in emergency situations.

[0003] Chinese Patent CN117703339B discloses a sand-controlling and throttling manifold, comprising: a throttling and throttling manifold body, on which a sand-control component is installed. The sand-control component includes a filter plate and a sedimentation tank. The filter plate is connected to the inner wall of the pipeline of the throttling and throttling manifold body, and the sedimentation tank is connected to the bottom end of the pipeline of the throttling and throttling manifold body, and the sedimentation tank is located on the air inlet side of the filter plate. The sedimentation tank is designed with a conical structure, and the bottom end of the sedimentation tank is connected to a baffle plate arranged vertically and a collection trough. When the collection trough is removed from the sedimentation tank, the baffle plate seals the bottom end of the sedimentation tank. This invention sets a baffle plate and a collection trough at the bottom of the sedimentation tank. The bottom of the sedimentation tank is sealed by an openable and closable baffle plate, and the sand and gravel in the collection trough can be cleaned without stopping the machine. The operation is convenient and reduces fluid leakage. Compared with the form of setting valves, it can effectively bear the filtered sand and gravel, reduce the impact of sand and gravel on the pipeline body, improve the reliability of the structure, and extend the service life.

[0004] The aforementioned well control manifold can filter and block sand and gravel particles in the fluid through a filter plate. However, since the sand and gravel particles in the fluid vary in size, the pore size of a single filter screen is difficult to match the sand and gravel particles. If the pore size is too large, it will not be able to intercept fine sand and gravel. If the pore size is too small, it will aggravate the clogging problem of the filter plate, resulting in poor filtration effect. Summary of the Invention

[0005] This invention provides a kill manifold with a multi-stage filtration structure to solve the technical problem that current kill manifolds filter sand and gravel in fluids using a single filter screen, where the pore size of the single filter screen is difficult to match the sand and gravel particles, resulting in poor filtration effect.

[0006] To solve the above-mentioned technical problems, the present invention discloses a kill manifold with a multi-stage filtration structure, comprising: a main pipe, a transfer block, and branch pipes. One end of the main pipe is connected to one end of the transfer block. A branch pipe is provided on the upper surface of the transfer block. A rotating cavity is provided inside the transfer block. An inlet channel and a outlet channel are respectively provided on both sides of the rotating cavity. The main pipe is connected to the rotating cavity through the inlet channel. The upper end of the rotating cavity is connected to the branch pipe through the outlet channel. A filter disc is rotatably arranged inside the rotating cavity. A filter channel is provided inside the filter disc. First filter screens are symmetrically arranged at both ends of the filter channel. An installation hole is provided at the center of the upper surface of the filter disc. The installation hole is connected to the filter channel. A second filter screen is arranged inside the installation hole.

[0007] Preferably, the diameter of the filter pores of the first filter screen is larger than the diameter of the filter pores of the second filter screen.

[0008] Preferably, sealing rings are provided on the outer periphery of the upper and lower ends of the filter disc, and sealing grooves are provided on the inner wall of the rotating cavity, with the sealing rings and the inner wall of the sealing grooves being rotatably connected in a sealing manner.

[0009] Preferably, a plurality of guide rods are provided in the filter channel, the guide rods are arranged along the axial direction of the filter channel, and the two ends of the guide rods are respectively connected to the inner wall of the filter channel through fixing blocks. The first filter screen is provided with a first guide hole adapted to the guide rod, and the first filter screen is slidably connected to the guide rod through the first guide hole. A first spring is sleeved on the guide rod, one end of the first spring is connected to the fixing block, and the other end of the first spring is connected to the first filter screen.

[0010] Preferably, a movable block is provided inside the filter channel, and the outer periphery of the movable block is slidably connected to the inner wall of the filter channel. A second guide hole adapted to the guide rod is provided inside the movable block, and the movable block is slidably connected to the guide rod through the second guide hole. The distance between the left and right ends of the movable block is greater than the diameter of the branch pipe.

[0011] Preferably, sliding holes are symmetrically arranged on the left and right sides of the movable block. A second spring is installed in the sliding hole. One end of the second spring is connected to the inner wall of the sliding hole, and the other end of the second spring is provided with a sliding shaft. The sliding shaft is slidably connected to the inner wall of the sliding hole. The end of the sliding shaft away from the second spring extends to the outside of the sliding hole and is provided with a sealing plate. The outer periphery of the sealing plate is slidably connected to the inner wall of the filter channel. A third guide hole adapted to the guide rod is provided in the sealing plate. The sealing plate is slidably connected to the guide rod through the third guide hole.

[0012] Preferably, a drive motor is installed at the bottom of the transfer block, and a rotating shaft is installed at the output end of the drive motor, with the upper end of the rotating shaft connected to the bottom of the filter disc.

[0013] Preferably, a distance sensor is installed inside the fixed block to detect the distance between the fixed block and the first filter screen, and a controller is installed outside the transfer block, which is electrically connected to the distance sensor and the drive motor respectively.

[0014] Preferably, a drain pipe is installed at the end of the transfer block away from the main pipe, and the drain pipe is connected to the drainage channel.

[0015] Preferably, a sewage baffle is installed at the end of the sewage pipe away from the transfer block, and several connecting holes are provided inside the sewage pipe. A third spring is installed in the connecting hole, one end of the third spring is connected to the inner wall of the connecting hole, and a connecting rod is provided at the other end of the third spring. The end of the connecting rod away from the third spring is connected to the sewage baffle.

[0016] The technical solution of this invention has the following advantages: This invention provides a kill manifold with a multi-stage filtration structure, relating to the field of kill manifold technology. It includes a main pipe, a transfer block, and branch pipes. One end of the main pipe is connected to one end of the transfer block. A branch pipe is disposed on the upper surface of the transfer block. A rotating cavity is disposed within the transfer block. An inlet channel and an outlet channel are respectively disposed on both sides of the rotating cavity. The main pipe communicates with the rotating cavity through the inlet channel. The upper end of the rotating cavity communicates with the branch pipe through the outlet channel. A filter disc is rotatably disposed within the rotating cavity. A filter channel is disposed within the filter disc. First filter screens are symmetrically disposed at both ends of the filter channel. An installation hole is disposed at the center of the upper surface of the filter disc, communicating with the filter channel. A second filter screen is disposed within the installation hole. In this invention, when fluid passes through the filter channel, large particles of sand and gravel are firstly intercepted by the first filter screen, and then small particles of sand and gravel are intercepted by the second filter screen. This solves the problem that a single filter screen cannot adequately handle sand and gravel of different particle sizes, thereby reducing the amount of sand and gravel in the fluid and improving the filtration effect.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the means particularly pointed out in the written description and the accompanying drawings.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the internal structure of a kill manifold with a multi-stage filtration structure according to the present invention;

[0021] Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 For the present invention Figure 1 Enlarged view of the structure at point B in the middle;

[0023] Figure 4 This is a schematic diagram of the overall structure of a kill manifold with a multi-stage filtration structure according to the present invention;

[0024] Figure 5 This is a top view of a kill manifold with a multi-stage filtration structure according to the present invention;

[0025] Figure 6 This is a schematic diagram of a kill manifold with a multi-stage filtration structure entering the working state according to the present invention;

[0026] Figure 7 This is a schematic diagram of a cleaning mechanism for a well kill manifold with a multi-stage filtration structure according to the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point C.

[0028] In the diagram: 1. Main pipe; 2. Transfer block; 3. Branch pipe; 4. Filter disc; 5. Filter channel; 6. First filter screen; 7. Second filter screen; 8. Sealing ring; 9. Sealing groove; 10. Guide rod; 11. Fixing block; 12. First spring; 13. Moving block; 14. Sliding hole; 15. Second spring; 16. Sliding shaft; 17. Sealing plate; 18. Drive motor; 19. Rotating shaft; 20. Sewage pipe; 21. Sewage baffle; 22. Connecting hole; 23. Third spring; 24. Connecting rod; 25. First rotating shaft; 26. Mounting plate; 27. Second rotating shaft; 28. Cleaning plate; 29. ​​Cleaning bristles; 30. Drive cylinder; 31. Fourth spring; 32. Fixing plate; 33. Connecting column; 34. Spiral groove; 35. Sliding column; 36. Fixing ring; 37. Gear ring; 38. Gear. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] Example 1:

[0032] This invention provides a kill manifold with a multi-stage filtration structure, such as... Figures 1-8As shown, it includes: a main pipe 1, a transfer block 2, and a branch pipe 3. One end of the main pipe 1 is connected to one end of the transfer block 2. The branch pipe 3 is provided on the upper surface of the transfer block 2. A rotating cavity is provided inside the transfer block 2. An inlet channel and an outlet channel are provided on both sides of the rotating cavity. The main pipe 1 is connected to the rotating cavity through the inlet channel. The upper end of the rotating cavity is connected to the branch pipe 3 through the outlet channel. A filter plate 4 is rotatably installed inside the rotating cavity. A filter channel 5 is provided inside the filter plate 4. First filter screens 6 are symmetrically arranged at both ends of the filter channel 5. An installation hole is provided at the center of the upper surface of the filter plate 4. The installation hole is connected to the filter channel 5. A second filter screen 7 is installed inside the installation hole.

[0033] The diameter of the filter pores in the first filter screen 6 is larger than that in the second filter screen 7.

[0034] The working principle and beneficial effects of the above technical solution are as follows: Fluid can flow from the main pipe 1 to the transfer block 2. After the fluid flows in from the main pipe 1, it flows into the filter channel 5 through the inlet channel, and then flows into the outlet channel after being filtered by the first filter screen 6. After being filtered by the second filter screen 7, it flows into the branch pipe 3 from the outlet channel, thus completing the fluid transportation. Since the filter hole diameter of the first filter screen 6 is larger than that of the second filter screen 7, when the fluid passes through the first filter screen 6, the first filter screen 6 can intercept large particles of sand and gravel in the fluid, and then the second filter screen 7 intercepts small particles of sand and gravel in the fluid. On the one hand, it can intercept fine sand and gravel, and on the other hand, it can avoid the rapid clogging of the first filter screen 6, thereby extending the service life of the first filter screen 6. It solves the problem that a single filter screen cannot handle sand and gravel of different particle sizes, reduces the amount of sand and gravel in the fluid, and improves the filtration effect. The filter disc 4 is rotatably set in the rotating cavity of the transfer block 2. The filter disc 4 can be driven to rotate in the rotating cavity through the drive mechanism, thereby reducing the local accumulation of sand and gravel on the surface of the first filter screen 6 and further extending the service life of the first filter screen 6.

[0035] Example 2:

[0036] Based on the above embodiment 1, as follows Figure 3 As shown, sealing rings 8 are respectively provided on the outer periphery of the upper and lower ends of the filter disc 4, and sealing grooves 9 are provided on the inner wall of the rotating cavity. The sealing rings 8 and the inner wall of the sealing grooves 9 are connected in a sealing rotation.

[0037] The working principle and beneficial effects of the above technical solution are as follows: When the filter disc 4 rotates in the rotating cavity, the cooperation between the sealing ring 8 and the sealing groove 9 can prevent unfiltered fluid from flowing from the gap between the filter disc 4 and the rotating cavity to the liquid outlet channel, thereby improving the sealing performance and ensuring that the fluid must be filtered through the first filter screen 6 and the second filter screen 7 before flowing into the branch pipe 3, thus ensuring the filtration effect. In addition, through the cooperation between the sealing groove 9 and the sealing ring 8, sand and gravel are prevented from entering between the rotating cavity and the filter disc 4, preventing severe wear of the filter disc 4 when it rotates and extending the service life of the filter disc 4.

[0038] Example 3:

[0039] Based on Example 1 or 2, such as Figure 3 As shown, a plurality of guide rods 10 are provided in the filter channel 5. The guide rods 10 are arranged along the axial direction of the filter channel 5. Both ends of the guide rods 10 are connected to the inner wall of the filter channel 5 through fixing blocks 11. The first filter screen 6 is provided with a first guide hole that matches the guide rods 10. The first filter screen 6 is slidably connected to the guide rods 10 through the first guide hole. A first spring 12 is sleeved on the guide rods 10. One end of the first spring 12 is connected to the fixing block 11, and the other end of the first spring 12 is connected to the first filter screen 6.

[0040] The working principle and beneficial effects of the above technical solution are as follows: When the fluid passes through the first filter screen 6, the sand and gravel in the fluid will impact the first filter screen 6, thereby pushing the first filter screen 6 to move away from the fixed block 11 along the guide rod 10. The first spring 12 is compressed. As the fluid flow rate changes, the impact of the fluid and sand and gravel on the first filter screen 6 changes. Under the elastic force of the first spring 12, the first filter screen 6 moves along the guide rod 10, thereby generating a small vibration. Under the vibration, some of the sand and gravel on the first filter screen 6 can be shaken off, thereby reducing the sand and gravel accumulated on the surface of the first filter screen 6. Furthermore, by setting the first spring 12, the elastic force of the first spring 12 can reduce the instantaneous impact force of the fluid on the first filter screen 6, thereby improving the durability of the first filter screen 6.

[0041] Example 4:

[0042] Based on Example 3, such as Figure 1 As shown, a movable block 13 is provided in the filter channel 5. The outer periphery of the movable block 13 is slidably connected to the inner wall of the filter channel 5. A second guide hole adapted to the guide rod 10 is provided in the movable block 13. The movable block 13 is slidably connected to the guide rod 10 through the second guide hole. The distance between the left and right ends of the movable block 13 is greater than the diameter of the branch pipe 3.

[0043] The movable block 13 has symmetrical sliding holes 14 on its left and right sides. A second spring 15 is installed inside the sliding hole 14. One end of the second spring 15 is connected to the inner wall of the sliding hole 14, and the other end of the second spring 15 is provided with a sliding shaft 16. The sliding shaft 16 is slidably connected to the inner wall of the sliding hole 14. The end of the sliding shaft 16 away from the second spring 15 extends to the outside of the sliding hole 14 and is provided with a sealing plate 17. The outer periphery of the sealing plate 17 is slidably connected to the inner wall of the filter channel 5. A third guide hole adapted to the guide rod 10 is provided inside the sealing plate 17. The sealing plate 17 is slidably connected to the guide rod 10 through the third guide hole.

[0044] The working principle and beneficial effects of the above technical solution are as follows: After the fluid passes through the first filter screen 6, the fluid can push the sealing plate 17 to slide away from the main pipe 1 in the filter channel 5. The sealing plate 17 drives the moving block 13 to slide away from the main pipe 1 through the second spring 15. When the sealing plate 17 passes through the second filter screen 7, the liquid outlet channel is connected to the filter channel 5, and the fluid can flow into the branch pipe 3 through the second filter screen 7. Under the impact force of the fluid, the sealing plate 17 close to the main pipe 1 moves towards the moving block 13, and the sliding shaft 16 slides into the sliding hole 14. The second spring 15 is gradually compressed. At this time, the well kill manifold enters the working state. By setting the moving block 13, and the length of the moving block 13 is greater than the diameter of the branch pipe 3, the fluid can be prevented from flowing out from the first filter screen 6 at the end away from the main pipe 1, thereby ensuring that the fluid passes smoothly through the second filter screen 7 and flows into the branch pipe 3.

[0045] Example 5:

[0046] Based on Example 3 or 4, such as Figure 1 As shown, a drive motor 18 is installed at the bottom of the transfer block 2, and a rotating shaft 19 is installed at the output end of the drive motor 18. The upper end of the rotating shaft 19 is connected to the bottom of the filter disc 4.

[0047] A distance sensor is installed inside the fixed block 11 to detect the distance between the fixed block 11 and the first filter screen 6. A controller is installed outside the transfer block 2, and the controller is electrically connected to the distance sensor and the drive motor 18 respectively.

[0048] The working principle and beneficial effects of the above technical solution are as follows: The drive mechanism includes a drive motor 18, a distance sensor and a controller. When the distance sensor detects that the distance between the fixed block 11 and the first filter screen 6 is greater than the preset distance, it indicates that the first filter screen 6 is severely clogged. At this time, the controller controls the drive motor 18 to start. The drive motor 18 starts and drives the rotating shaft 19 to rotate. The rotating shaft 19 drives the filter disc 4 to rotate 180 degrees in the rotating cavity, so that the first filter screen 6 away from the main pipe 1 and the first filter screen 6 close to the main pipe 1 exchange positions, realizing the automatic replacement of the first filter screen 6, ensuring the filtration effect of the first filter screen 6 on the fluid. The fluid flows into the filter channel 5 through the replaced first filter screen 6, and then pushes the sealing plate 17 to slide away from the main pipe 1. The fluid can flow into the branch pipe 3 through the second filter screen 7.

[0049] Example 6:

[0050] Based on any one of Examples 1-5, such as Figure 1 As shown, a drain pipe 20 is installed at the end of the transfer block 2 away from the main pipe 1, and the drain pipe 20 is connected to the drain channel;

[0051] A sewage discharge baffle 21 is provided at the end of the sewage discharge pipe 20 away from the transfer block 2. Several connecting holes 22 are provided inside the sewage discharge pipe 20. A third spring 23 is provided inside the connecting hole 22. One end of the third spring 23 is connected to the inner wall of the connecting hole 22. A connecting rod 24 is provided at the other end of the third spring 23. The end of the connecting rod 24 away from the third spring 23 is connected to the sewage discharge baffle 21.

[0052] The working principle and beneficial effects of the above technical solution are as follows: After the rotating shaft 19 rotates and drives the filter disc 4 to rotate 180 degrees in the rotating cavity, since the fluid is stored between the clogged first filter screen 6 and the sealing plate 17, after the fluid re-enters the filter channel 5, the fluid pushes the sealing plate 17 to move. The sealing plate 17 drives the moving block 13 to slide in the filter channel 5, thereby pushing the stored fluid to flow into the drain pipe 20. When the sealing plate 17 on the right passes the second filter screen 7, it can scrape off the fine sand and gravel accumulated on the surface of the second filter screen 7, thereby achieving the effect of cleaning the second filter screen 7 and extending the service life of the second filter screen 7. At the same time, the stored fluid can pass through the first filter screen 6 in reverse, and the first filter screen 6 is rinsed by the reverse flow. The rinsed fluid contains... The fluid containing grit pushes the drain baffle 21 away from the drain pipe 20, creating a gap between the drain baffle 21 and the drain pipe 20. The fluid containing grit can then flow out through the gap. Furthermore, under the elastic force of the second spring 15, the sealing plate 17 on the right slides away from the moving block 13, pushing the fluid to flow out quickly. The fluid carrying the scraped-off fine sand particles can flow out through the larger aperture of the first filter screen 6 to the outside of the drain pipe 20, improving the cleaning effect. Through the automatic rotation of the filter disc 4, the first filter screen 6 and the second filter screen 7 can be cleaned, further ensuring the filtration effect of the first filter screen 6 and the second filter screen 7, reducing the impact of grit on the inside of the well kill manifold, and extending the service life of the well kill manifold.

[0053] Example 7:

[0054] Based on any one of Examples 4-6, such as Figure 1 , Figure 7 , Figure 8As shown, a cleaning mechanism is provided on the first filter screen 6. The cleaning mechanism includes a first rotating shaft 25, which is rotatably connected to the center of the first filter screen 6. The end of the first rotating shaft 25 away from the sealing plate 17 extends to the outside of the first filter screen 6 and is fixedly mounted on a mounting plate 26. The mounting plate 26 is perpendicular to the first rotating shaft 25. A second rotating shaft 27 is rotatably mounted inside the mounting plate 26 and is parallel to the first rotating shaft 25. A cleaning plate 28 is provided at the end of the second rotating shaft 27 near the first filter screen 6. Several cleaning bristles 29 are provided on the side of the cleaning plate 28 near the first filter screen 6, with one end of each cleaning bristle 29 contacting the surface of the first filter screen 6. The first rotating shaft 25 is provided at the end near the sealing plate 17. The drive cylinder 30 has one end sealed and slidably connected to the outer wall of the first rotating shaft 25. A fourth spring 31 is provided at the end of the first rotating shaft 25 near the sealing plate 17. The end of the fourth spring 31 away from the first rotating shaft 25 is rotatably connected to the inner wall of the drive cylinder 30 near the sealing plate 17. The drive cylinder 30 is slidably positioned at the center of the fixed plate 32. The fixed plate 32 is elongated and parallel to the first filter screen 6. Both ends of the fixed plate 32 are fixedly connected to the side wall of the first filter screen 6 through connecting posts 33. A spiral groove 34 is provided on the inner wall of the drive cylinder 30. A sliding post 35 is slidably arranged in the spiral groove 34. One end of the sliding post 35 is fixedly connected to the outer wall of the first rotating shaft 25.

[0055] The working principle and beneficial effects of the above technical solution are as follows: When the sealing plate 17 moves towards the first filter screen 6, the sealing plate 17 first contacts the drive cylinder 30 and drives the drive cylinder 30 to slide towards the first filter screen 6 within the fixed plate 32. The drive cylinder 30 cannot rotate. Therefore, during the sliding process, the drive cylinder 30 drives the sliding column 35 to move through the spiral groove 34 on the inner wall. The fourth spring 31 is gradually compressed, and the sliding column 35 slides along the spiral groove 34, thereby driving the first rotating shaft 25 to rotate at the center of the first filter screen 6. The rotation of the first rotating shaft 25 drives the mounting plate 26 to rotate. The rotation of the mounting plate 26 drives the second rotating shaft 27 to move. The second rotating shaft 27 drives the cleaning plate 28 to move along the second rotating shaft. Rotating around the center of the first filter screen 6, the cleaning bristles 29 move along the surface of the first filter screen 6, thereby scraping away the sand and gravel accumulated on the surface of the first filter screen 6, achieving automatic cleaning of the first filter screen 6, improving the filtration effect of the first filter screen 6, and extending the service life of the first filter screen 6. When the sealing plate 17 moves away from the first filter screen 6, the sealing plate 17 gradually separates from the drive cylinder 30. Under the elastic force of the fourth spring 31, the drive cylinder 30 slides away from the first filter screen 6, and through the cooperation of the spiral groove 34 and the sliding column 35, drives the first rotating shaft 25 to rotate in the opposite direction, so that the cleaning bristles 29 clean the surface of the first filter screen 6 again, further improving the cleaning effect of the first filter screen 6.

[0056] Example 8:

[0057] Based on Example 7, such as Figure 7 , Figure 8As shown, a fixing ring 36 is fixedly installed on the side of the first filter screen 6 away from the sealing plate 17. The center line of the fixing ring 36 is on the same straight line as the center line of the first filter screen 6. A toothed ring 37 is fixedly installed on the inner wall of the fixing ring 36. The toothed ring 37 has teeth on its inner side. A gear 38 is installed at the end of the second rotating shaft 27 away from the first filter screen 6. The outer ring of the gear 38 meshes with the inner side of the toothed ring 37.

[0058] The working principle and beneficial effects of the above technical solution are as follows: When the first rotating shaft 25 drives the mounting plate 26 to rotate, the mounting plate 26 drives the second rotating shaft 27 to rotate around the first rotating shaft 25. Since the gear 38 meshes with the inner side of the gear ring 37, the gear 38 moves along the gear ring 37 and drives the second rotating shaft 27 to rotate at the same time as the first rotating shaft 25 rotates. The rotation of the second rotating shaft 27 drives the cleaning plate 28 to rotate, so that the cleaning bristles 29 rotate on the surface of the first filter screen 6, which facilitates the removal of the intercepted sand and gravel from multiple angles, making the cleaning more thorough and improving the cleaning effect on the first filter screen 6.

[0059] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A blowout manifold having a multi-stage filtration structure, characterized by, The utility model relates to a filter device, including: The main pipe (1) one end is connected with the transfer block (2) one end, and the transfer block (2) upper surface sets up the branch pipe (3), and the transfer block (2) is provided with rotating cavity, and rotating cavity both sides are provided with liquid inlet channel and liquid outlet channel respectively, and the main pipe (1) is communicated with rotating cavity through liquid inlet channel, and rotating cavity upper end is communicated with branch pipe (3) through liquid outlet channel, and rotating cavity is provided with filter disc (4) and rotates, and filter disc (4) is provided with filter channel (5) in, and filter channel (5) both ends are provided with first filter screen (6) symmetry, and filter disc (4) upper surface center sets up mounting hole, and mounting hole is communicated with filter channel (5), and mounting hole is provided with second filter screen (7) in, Filter channel (5) is provided with a plurality of guide rods (10), and guide rod (10) is provided with the axial setting along filter channel (5), and guide rod (10) both ends are connected with filter channel (5) inner wall through fixed block (11) respectively, and first filter screen (6) is provided with the first guide hole that is adapted to guide rod (10) in, and first filter screen (6) is slidably connected with guide rod (10) through first guide hole, and first spring (12) is set on guide rod (10), and first spring (12) one end is connected with fixed block (11), and first spring (12) other end is connected with first filter screen (6), Filter channel (5) is provided with moving block (13), and moving block (13) outer periphery is slidably connected with filter channel (5) inner wall left and right, and moving block (13) is provided with the second guide hole that is adapted to guide rod (10) in, and moving block (13) is slidably connected with guide rod (10) through second guide hole, and the distance of moving block (13) left and right two ends is greater than the diameter of branch pipe (3); Moving block (13) left and right sides are provided with sliding hole (14) symmetry, and second spring (15) is set in sliding hole (14), and second spring (15) one end is connected with sliding hole (14) inner wall, and second spring (15) other end sets up sliding shaft (16), and sliding shaft (16) is slidably connected with sliding hole (14) inner wall left and right, and sliding shaft (16) end away from second spring (15) extends to sliding hole (14) outside and sets up sealing plate (17), and sealing plate (17) outer periphery is slidably connected with filter channel (5) inner wall left and right, and sealing plate (17) is provided with the third guide hole that is adapted to guide rod (10) in, and sealing plate (17) is slidably connected with guide rod (10) through third guide hole.

2. The blowout manifold with multi-stage filtering structure according to claim 1, characterized in that, The filter hole diameter of first filter screen (6) is greater than the filter hole diameter of second filter screen (7).

3. The blowout manifold with multi-stage filtering structure according to claim 1, characterized in that, Filter disc (4) upper and lower two ends outer periphery sets up sealing ring (8) respectively, and rotating cavity inner wall sets up sealing groove (9), and sealing ring (8) and sealing groove (9) inner wall sealing rotation connection.

4. The well control manifold having a multi-stage filtration structure according to claim 1, wherein, Transfer block (2) bottom sets up drive motor (18), and drive motor (18) output end sets up rotating shaft (19), and rotating shaft (19) upper end is connected with filter disc (4) bottom.

5. The blowout manifold with multi-stage filtration structure according to claim 4, characterized in that, The distance sensor is arranged in the fixed block (11) and is used for detecting the distance between the fixed block (11) and the first filter screen (6).

6. The blowout manifold with multi-stage filtration structure according to claim 1, characterized in that, The transfer block (2) is provided with a blowdown pipe (20) away from the main pipe (1), and the blowdown pipe (20) is communicated with the liquid discharge channel.

7. The blowout manifold with multi-stage filtration structure according to claim 6, characterized in that, The blowdown pipe (20) is provided with a blowdown baffle (21) away from the transfer block (2), a plurality of connecting holes (22) are arranged in the blowdown pipe (20), a third spring (23) is arranged in the connecting hole (22), one end of the third spring (23) is connected with the inner wall of the connecting hole (22), the other end of the third spring (23) is provided with a connecting rod (24), and the connecting rod (24) away from the third spring (23) is connected with the blowdown baffle (21).

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