A downhole water distributor regulating arm and water distributor thereof

Abstract

The application discloses a downhole water distributor adjusting arm and a water distributor thereof, and relates to the technical field of oilfield machinery. The downhole water distributor adjusting arm and the water distributor thereof comprise a cylinder body and a water nozzle arranged on the cylinder body, and comprise the following: an adjusting arm body, which comprises an inner cylinder and an outer cylinder sleeved on the periphery of the inner cylinder, the outer cylinder has axial freedom on the inner cylinder, the lower end of the inner cylinder is at the same height as the adjusting cylinder, and the adjusting arm body is used for adjusting the opening degree of the water nozzle when descending; and an adjusting hole, which is arranged on the cylinder body and deviates from the water nozzle, and the position of the adjusting hole is higher than that of the water nozzle. The downhole water distributor adjusting arm and the water distributor thereof can ensure that the outer cylinder in the adjusting arm body completely blocks the water nozzle when the external pressure of the water distributor is greater than the internal pressure, so that the situation that external liquid containing sand and thick oil and the like easily enters the inside of the water distributor through the water nozzle under the action of pressure is avoided.

Description

Technical Field

[0001] This invention relates to the field of oilfield machinery technology, specifically to a downhole water distributor adjusting arm and its water distributor. Background Technology

[0002] In oilfield development, injecting water into the oil-bearing reservoir through injection wells is an effective method to enhance oil recovery. With the improvement of reservoir development levels, oil recovery can be enhanced through stratified water injection. In the stratified water injection process, a bridge-type concentric water distributor is used to simultaneously achieve high-precision flow measurement and adjustment of the injection volume (referred to as measurement and adjustment) to meet the needs of stratified water distribution.

[0003] To prevent external liquids such as sand-containing liquids and heavy oil from easily entering the water distributor through the radial through-hole and outlet under pressure, thus affecting the measurement and adjustment of the measuring instrument and even causing blockage of the water distributor, patent application number CN201720216326.7 proposes a bridge-type concentric anti-backflow water distributor. This device uses a sealing ball connected to a compression spring inside the radial through-hole to seal the valve seat hole, preventing external liquids from entering the valve seat hole and outlet, thus avoiding affecting the measurement and adjustment accuracy of the measuring instrument and preventing blockage of the water distributor. An outlet hole connected to the valve seat hole is provided on the pressure cap, facilitating the input of water from the outlet into the oil layer. A radial through-hole is provided on the bridge body, and an outlet connected to the radial through-hole is provided on the fixed water nozzle, facilitating the output of water from the water distributor to the oil layer. A movable water nozzle, connected to the inner wall of the guide cylinder via a threaded drive, rotates and moves up and down under the drive of a rotary drive component to change the flow area of ​​the outlet, thereby distributing water to the oil layer with high precision. Therefore, the bridge-type concentric anti-backflow water distributor provided in this embodiment has anti-backflow function, is not prone to clogging, and can be precisely adjusted.

[0004] The above describes the addition of a valve body structure at the water nozzle position. When the external pressure is greater than the water pressure of the distributor, the valve body will close the water nozzle to prevent external liquid from entering the distributor. However, the entire valve structure, such as the spring, pressure cap, and valve seat, will block the water coming out of the water nozzle, resulting in a change in the water output. The smaller the opening of the water nozzle, the more obvious this obstruction will be. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a downhole water distributor regulating arm and its distributor, which solves the problem that the valve's own structure, such as springs, pressure caps, and valve seats, can obstruct the water coming out of the nozzle, causing changes in the water output. The smaller the nozzle opening, the more obvious this obstruction becomes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a downhole water distributor regulating arm, comprising a cylinder and a water nozzle disposed on the cylinder, and further comprising:

[0007] An adjusting arm body, comprising an inner cylinder and an outer cylinder sleeved around the inner cylinder, wherein the outer cylinder has axial freedom on the inner cylinder, and the adjusting arm body is used to adjust the water nozzle opening when it moves downward;

[0008] An adjustment hole is provided on the cylinder body in a region offset from the water nozzle, and the position of the adjustment hole is higher than that of the water nozzle;

[0009] An assembly cavity is provided in the area opposite the regulating hole of the cylinder body. A pressure-bearing component is assembled in the assembly cavity. The pressure-bearing component is used to withstand the external pressure of the water distributor and convert the pressure into the power to drive the outer cylinder to move downward in the inner cylinder. The downward movement of the outer cylinder is used to completely block the water nozzle.

[0010] Furthermore, an annular groove is provided on the upper periphery of the inner cylinder, and a spring is sleeved around the annular groove;

[0011] The upper end of the outer cylinder has an inner shoulder, which is located at the upper end of the spring. This allows the outer cylinder to return to its lower end at the same height as the inner cylinder after it loses the driving force of the pressure-bearing component. This means that after the external pressure of the water distributor is lower than the internal pressure, the outer cylinder can return to its lower end at the same height as the inner cylinder and continue distributing water.

[0012] Furthermore, the inner wall of the inner shoulder is provided with a slider, and the outer circumferential surface of the inner cylinder opposite to the annular groove is provided with an inclined groove adapted to the slider. The pressure-bearing component is used to drive the outer cylinder to rotate, so that the outer cylinder rotates and moves downward under the control of the inclined groove and the slider.

[0013] Furthermore, the pressure-bearing component includes:

[0014] A wedge-shaped post, which can slide along the axial direction of the adjusting hole;

[0015] A movable arm, one end of which is adapted to a wedge-shaped post. When the wedge-shaped post is subjected to external pressure, it moves axially along the adjustment hole and pushes the movable arm.

[0016] The teeth are located on the outer surface of the outer cylinder in the area opposite to the assembly cavity, and the assembly cavity is provided with a movable tooth plate adapted to the teeth.

[0017] A spring is installed between the end of the moving tooth plate away from the moving arm and the inner wall of the assembly cavity;

[0018] The displacement generated when the moving arm is pushed is amplified by the double-moving structure to drive the moving toothed plate to move.

[0019] Furthermore, the double-movement structure includes:

[0020] The gear is rotatably assembled on the side of the moving arm away from the wedge-shaped column, and one side of the gear meshes with the side of the moving tooth plate away from the teeth.

[0021] A fixed gear plate is fixed inside the assembly cavity and meshes with the other side of the gear.

[0022] Furthermore, a diaphragm is fixed at one end of the regulating hole away from the center of the water distributor;

[0023] The adjustment hole is provided with an inner convex ring at one end. The inner convex ring is used to limit the diaphragm rupture caused by excessive water pressure in the assembly cavity and adjustment hole.

[0024] Furthermore, it also includes a drive threaded cylinder and an adjusting cylinder. The adjusting cylinder is integrally formed on the upper end of the inner cylinder, and a threaded groove is provided on the upper end of the adjusting cylinder. The rotation of the drive threaded cylinder is used to drive the adjusting cylinder to move vertically, so that the adjusting arm moves up and down to control the opening of the water nozzle.

[0025] The inner wall of the cylinder has guide protrusions on both sides of the area opposite to the adjusting cylinder, and the adjusting cylinder has guide grooves on both sides that are adapted to the guide protrusions.

[0026] Furthermore, the upper end of the drive threaded cylinder is provided with an integral rotating cylinder, and a support ring is rotatably installed on the periphery of the rotating cylinder through a bearing. The support ring is fixed to the inner wall of the cylinder through spokes, and an adapter head is fixed at the upper end of the rotating cylinder.

[0027] Furthermore, the assembly cavity is connected to the inner cavity of the cylinder, allowing water to enter the assembly cavity and creating a state where the water pressure inside the assembly cavity is equal to the water pressure inside the cylinder.

[0028] On the other hand, the present invention also provides a downhole water distributor, including the downhole water distributor adjustment arm described above, and an upper connector is provided at the upper end of the cylinder, and an upper connector thread is provided at the upper end of the upper connector.

[0029] The lower end of the cylinder is provided with a lower connector, and the lower end of the lower connector is provided with a lower connecting thread.

[0030] The present invention has the following beneficial effects:

[0031] The downhole water distributor's regulating arm and its distributor ensure that when the external pressure of the water distributor is greater than the internal pressure, the outer cylinder in the regulating arm moves down to completely block the water nozzle. This prevents external liquids such as sand-containing liquids and heavy oil from easily entering the water distributor through the water nozzle under pressure, ensuring the smooth operation of the subsequent measuring and adjusting instrument. It also avoids the situation in the existing technology where the installation of a one-way valve in the water nozzle area affects the water nozzle flow rate.

[0032] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0033] Figure 1 This is an external view of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0035] Figure 3 For the present invention Figure 2 The main view;

[0036] Figure 4 This is a schematic diagram of the internal structure of the cylinder of the present invention;

[0037] Figure 5 This is an assembly drawing of the adjusting arm body and adjusting sleeve structure of the present invention;

[0038] Figure 6 This is a cross-sectional view of the adjusting arm body of the present invention;

[0039] Figure 7 For the present invention Figure 6 First-person perspective exploded view;

[0040] Figure 8 This is a diagram showing the fit between the adjusting arm and the cylinder of the present invention;

[0041] Figure 9 For the present invention Figure 8 Enlarged view of area A;

[0042] Figure 10 This is a top view assembly diagram of the pressure-bearing component of the present invention;

[0043] Figure 11 For the present invention Figure 10 Enlarged view of area B;

[0044] Figure 12 This is an overall view of the inner cylinder and adjusting cylinder of the present invention;

[0045] Figure 13 For the present invention Figure 5 The main view;

[0046] Figure 14 For the present invention Figure 11 Enlarged view of area C;

[0047] Figure 15 This is a schematic diagram of the adjusting sleeve structure of the present invention from a first perspective;

[0048] Figure 16 This is a schematic diagram of the adjusting sleeve structure of the present invention from a second perspective;

[0049] Figure 17 For the present invention Figure 6 A second-person perspective breakdown.

[0050] In the diagram, 11. Upper connecting thread; 12. Upper connector; 13. Cylinder; 131. Guide protrusion; 132. Ceramic liner; 14. Water nozzle; 15. Lower connector; 16. Lower connecting thread; 17. Adjusting hole; 171. Inner convex ring; 18. Diaphragm; 2. Adjusting sleeve structure; 21. Adapter head; 22. Rotating cylinder; 23. Drive threaded cylinder; 24. Spoke; 3. Adjusting arm; 31. Inner cylinder; 311. Ring groove; 32. Adjusting cylinder; 321. Threaded groove; 322. Guide groove; 33. Outer cylinder; 331. Inner shoulder; 34. Spring; 341. Upper spring seat; 342. Lower spring seat; 35. Slider; 36. Inclined groove; 361. Flat groove; 4. Pressure-bearing component; 41. Wedge column; 42. Moving arm; 43. Gear; 44. Fixed gear plate; 45. Moving gear plate; 46. Spring II; 47. Tooth section; 5. Assembly cavity; 6. Spring III. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0053] The following is based on Figures 1-17 This invention describes the downhole water distributor regulating arm and the water distributor thereof provided in an embodiment of the invention.

[0054] Please see Figures 1-3 This invention provides an adjusting arm for a downhole water distributor, including a cylinder 13. Two water nozzles 14 are provided on the cylinder 13 and arranged on both sides of the cylinder 13.

[0055] like Figure 4 and Figure 5 As shown, the downhole water distributor adjustment arm also includes an adjustment sleeve structure 2 and an adjustment arm body 3 located inside the cylinder 13. After the measuring and adjusting instrument is lowered into the well, it controls the movement of the adjustment sleeve structure 2, thereby driving the adjustment arm body 3 to move up and down. The downward movement of the adjustment arm body 3 can block the water nozzle 14 to varying degrees, thereby adjusting the opening of the water nozzle 14.

[0056] Combination Figures 5-7 As shown, the aforementioned adjusting arm 3 includes an inner cylinder 31 and an outer cylinder 33 sleeved around the inner cylinder 31. This design transforms the existing one-piece adjusting arm into a separate, modular design. The lower ends of the inner cylinder 31 and the adjusting cylinder 32 are at the same height. When the adjusting arm 3 moves downwards as a whole, it can block the water nozzle 14 to varying degrees, thereby adjusting the opening of the water nozzle 14. The reason for designing the adjusting arm as a separate unit is that when the external pressure of the water distributor is greater than the internal water pressure, the outer cylinder 33 alone can completely close the water nozzle 14, preventing external liquids such as sand-containing liquids and heavy oil from easily entering the water distributor under pressure. Therefore, the outer cylinder 33 is configured to have axial freedom on the inner cylinder 31, and when the outer cylinder 33 moves downwards alone, it can completely block the water nozzle 14.

[0057] Reference Figure 1 , Figure 8 As shown, in order to enable the outer cylinder 33 to move downward independently when the external pressure of the water distributor is greater than the internal water pressure, an adjustment hole 17 is provided. The adjustment hole 17 is opened on the cylinder 13 in a region away from the water nozzle 14, preferably in the radial direction of the water distributor, and the position of the adjustment hole 17 is higher than the water nozzle 14. An assembly cavity 5 is provided in the region of the cylinder 13 opposite to the adjustment hole 17. A pressure-bearing component 4 is assembled in the assembly cavity 5. When the internal water pressure of the water distributor is greater than the external water pressure of the water distributor, the pressure-bearing component 4 is in a balanced state. When the external pressure of the water distributor is greater than the internal water pressure of the water distributor, the pressure-bearing component 4 can withstand the external pressure of the water distributor and convert this pressure into the power to drive the outer cylinder 33 to move downward in the inner cylinder 31. Thus, the outer cylinder 33 can completely block the water nozzle 14, preventing external liquids such as sand-containing liquids and heavy oil from easily entering the interior of the water distributor through the water nozzle 14 under pressure.

[0058] Therefore, the downhole water distributor adjustment arm provided by the present invention can ensure that when the external pressure of the water distributor is greater than the internal pressure, the outer cylinder 33 in the adjustment arm body 3 moves down to completely block the water nozzle 14, thus preventing external liquids such as sand-containing liquids and heavy oil from easily entering the water distributor through the water nozzle 14 under pressure. This ensures the smooth operation of the subsequent measuring and adjusting instrument and also avoids the situation in the prior art where the installation of a one-way valve in the water nozzle 14 area affects the flow rate of the water nozzle 14.

[0059] Preferably, the assembly cavity 5 is connected to the inner cavity of the cylinder 13, so that water can enter the assembly cavity 5 and form a state in which the water pressure in the assembly cavity 5 is equal to the water pressure in the cylinder 13.

[0060] like Figure 6 , Figure 7 and Figure 17The inner cylinder 31 is provided with an annular groove 311 on its upper periphery, and the outer cylinder 33 has an inner shoulder 331 at its upper end. It should be noted that when the measuring and adjusting instrument adjusts the opening of the water nozzle 14 by adjusting the adjusting arm 3, it is actually controlling the inner cylinder 31 to move downward. The inner cylinder 31 moves downward and pushes the inner shoulder 331 downward through the top surface of the annular groove 311. Then the outer cylinder 33 can move downward together with the inner cylinder 31, and the opening of the water nozzle 14 is adjusted synchronously.

[0061] Reference Figure 6 , Figure 7 , Figure 12 , Figure 13 and Figure 17 As shown, in order to enable the outer cylinder 33 to move downward relative to the inner cylinder 31, a slider 35 is provided on the inner wall of the inner edge shoulder 331. The outer circumferential surface of the inner cylinder 31 opposite to the annular groove 311 is provided with an inclined groove 36 adapted to the slider 35. When the pressure-bearing component 4 is subjected to external pressure, it can drive the outer cylinder 33 to rotate. When the outer cylinder 33 rotates, the slider 35 rotates together, so the slider 35 will also move downward in the inclined groove 36. That is, the outer cylinder 33 moves downward while rotating. No matter what the opening degree of the outer cylinder 33 and the inner cylinder 31 is relative to the water nozzle 14 in the initial state, the displacement of the outer cylinder 33 when it moves downward alone is equal. This displacement is greater than the axial dimension of the water nozzle 14 in the water distributor, ensuring that no matter what state the opening degree of the outer cylinder 33 and the inner cylinder 31 is relative to the water nozzle 14, the outer cylinder 33 can completely block the water nozzle 14.

[0062] Preferably, a flat groove 361 is also provided at the upper end of the inclined groove 36 to prevent the outer cylinder 33 from moving downward along the inclined groove 36 on its own while it is not rotating.

[0063] Continue to refer to Figure 6 , Figure 7 , Figure 12 , Figure 13 and Figure 17Because the pressure of external liquids such as sand and heavy oil is not continuous—that is, the external pressure is greater than the water pressure of the water jet from the nozzle 14 for a certain period of time—and when the external pressure is less than the water pressure of the nozzle 14, the outer cylinder 33 needs to return to the same height as the inner cylinder 31 to maintain the opening of the nozzle 14. Therefore, a spring 34 is fitted around the annular groove 311. The upper end of the spring 34 has an upper spring seat 341, and the lower end has a lower spring seat 342. The inner edge shoulder 331 is mounted on the upper surface of the upper spring seat 341, and a thrust bearing (not shown) is provided between the two to reduce the pressure of the outer cylinder 33 and the inner cylinder 31. The wear between the shoulder 331 and the upper spring seat 341 during rotation can apply pressure to the spring 34 when the outer cylinder 33 rotates and moves downward, and the spring 34 is in a compressed state. Conversely, when the outer cylinder 33 loses the driving force of the pressure-bearing component 4, the spring 34 can rebound, and its rebound can push the outer cylinder 33 upward, so that the outer cylinder 33 can return to its lower end and be at the same height as the inner cylinder 31 again. At this time, the inner cylinder 31 and the outer cylinder 33 resume their original water distribution state. In summary, when the external pressure of the water distributor is lower than the internal pressure, the outer cylinder 33 can return to its lower end and be at the same height as the inner cylinder 31 and continue to distribute water.

[0064] Combination Figures 8-10 as well as Figure 14 As shown, in order to ensure that the pressure-bearing component 4 can operate when the external pressure is greater than the water pressure inside the distributor, the pressure-bearing component 4 includes a wedge-shaped column 41, a moving arm 42, a toothed part 47, a spring 46, and a double-movement structure. The wedge-shaped column 41 is located inside the adjustment hole 17. When the wedge-shaped column 41 is inside the adjustment hole 17, its outer end, which is away from the center of the distributor, is subjected to external pressure, while its inner end, which is closer to the center of the distributor, is subjected to the water pressure inside the distributor, thus forming a pressure difference. The position of the wedge-shaped column 41 can be adjusted through this pressure difference. Specifically, the wedge... The wedge-shaped column 41 can slide along the axial direction of the adjusting hole 17. The wedge-shaped column 41 has a T-shaped sliding block. A T-shaped sliding groove adapted to the T-shaped sliding block is provided in the adjusting hole 17. A spring 6 is provided between the T-shaped sliding block and the T-shaped sliding groove. When the external pressure of the water distributor is greater than the internal water pressure, the external pressure will push the wedge-shaped column 41 to move. The movement of the wedge-shaped column 41 can compress the spring 6. One end of the moving arm 42 is adapted to the wedge-shaped column 41, so that when the wedge-shaped column 41 moves, it can push the moving arm 42, causing the moving arm 42 to move.

[0065] Furthermore, the toothed portion 47 is located on the outer surface of the outer cylinder 33 in the area opposite to the assembly cavity 5. The assembly cavity 5 is provided with a movable toothed plate 45 adapted to the toothed portion 47. Thus, when the movable toothed plate 45 is displaced, the toothed portion 47 can push the outer cylinder 33 to rotate around its own center, thereby achieving the purpose of the outer cylinder 33 moving downward while rotating. A double-movement structure is provided between the movable toothed plate 45 and the moving arm 42. This double-movement structure can expand the displacement of the moving arm 42, thereby expanding the moving stroke of the movable toothed plate 45, increasing the rotation angle of the outer cylinder 33, and thus expanding its downward movement.

[0066] Preferably, the axial length of the toothed portion 47 should be greater than the maximum vertical displacement of the outer cylinder 33, so that the toothed portion 47 can always mesh with the moving toothed plate 45.

[0067] It should be noted that the reason for setting up a double-movement structure to expand the stroke of the moving arm 42 is that the adjustment hole 17 is opened on the wall of the cylinder 13. Since the wall thickness of the cylinder 13 is limited, the displacement of the adjustment hole 17 is limited. The small displacement is difficult to achieve the amount of downward movement required for the outer cylinder 33. Therefore, a double-movement structure is designed here to expand the stroke of the moving arm 42, thereby expanding the rotation angle of the outer cylinder 33, and thus expanding its downward displacement, ensuring that the outer cylinder 33 can block the water nozzle 14.

[0068] Preferably, a second spring 46 is installed between the end of the movable toothed plate 45 away from the movable arm 42 and the inner wall of the assembly cavity 5, so that when the movable arm 42 loses the pressure of the wedge column 41, the second spring 46 can rebound to reset the movable toothed plate 45, causing the outer cylinder 33 to rotate in the opposite direction and move upward.

[0069] Specifically, such as Figure 11 The aforementioned double-movement structure includes a gear 43 and a fixed tooth plate 44. The gear 43 is rotatably assembled on the side of the moving arm 42 away from the wedge-shaped column 41. One side of the gear 43 meshes with the side of the moving tooth plate 45 away from the tooth 47. The fixed tooth plate 44 is fixed in the assembly cavity 5 and meshes with the other side of the gear 43.

[0070] In this embodiment, when the wedge-shaped column 41 pushes the moving arm 42 to the right, the gear 43 also moves to the right, and the gear 43 can rotate counterclockwise under the action of the fixed gear plate 44. Its counterclockwise rotation can push the moving gear plate 45 to the right, achieving a double displacement.

[0071] like Figure 8 To prevent external liquid from entering the water distributor through the regulating hole 17, a diaphragm 18 is fixed at one end of the regulating hole 17 away from the center of the water distributor. The diaphragm 18 is provided with a certain redundancy. When the external pressure increases, the liquid pressure pushes the diaphragm 18, and the diaphragm 18 can push the wedge column 41.

[0072] Additionally, it should be noted that in order to prevent the diaphragm 18 from bursting due to excessive internal pressure in the water distributor, an inner convex ring 171 is provided at one end of the adjustment hole 17. The pressure applied by the spring 6 to the wedge column 41 can press the wedge column 41 onto the inner convex ring 171. Due to the obstruction of the inner convex ring 171 and the wedge column 41, the water pressure inside the water distributor is isolated from the diaphragm 18, so it will not cause the diaphragm 18 to burst.

[0073] Reference Figure 4 and Figure 5 As shown, the aforementioned adjusting sleeve structure 2 includes a drive threaded cylinder 23, and the aforementioned adjusting arm body 3 includes an adjusting cylinder 32. The adjusting cylinder 32 is integrally formed on the upper end of the inner cylinder 31, and the upper end of the adjusting cylinder 32 is provided with a threaded groove 321. The drive threaded cylinder 23 rotates to drive the adjusting cylinder 32 to move vertically, so that the adjusting arm body 3 moves up and down to control the opening of the water nozzle 14.

[0074] Preferably, the inner wall of the cylinder 13 has guide protrusions 131 on both sides opposite to the adjusting cylinder 32, and the adjusting cylinder 32 has guide grooves 322 on both sides that are adapted to the guide protrusions 131, thereby restricting the adjusting cylinder 32 from rotating when the threaded cylinder 23 is driven to rotate, ensuring that the adjusting cylinder 32 can only move in the vertical direction.

[0075] In addition, such as Figure 13 , Figure 15 and Figure 16 As shown, in order to facilitate the rotation of the threaded cylinder 23 driven by the measuring instrument, an integral rotating cylinder 22 is provided at the upper end of the threaded cylinder 23. A support ring is rotatably installed on the periphery of the rotating cylinder 22 through a bearing. The support ring is fixed to the inner wall of the cylinder body 13 through spokes 24. An adapter head 21 is fixed at the upper end of the rotating cylinder 22. After the measuring instrument and the adapter head 21 are engaged and rotated, the adapter head 21 can drive the rotating cylinder 22 to rotate, so as to achieve the purpose of driving the threaded cylinder 23 to rotate.

[0076] Reference Figure 2 and Figure 4 As shown, a ceramic liner 132 is provided on the inner wall of the cylinder 13 in the area corresponding to the vertical stroke of the outer cylinder 33. When the adjusting arm 3 moves up and down, the outer cylinder 33 contacts the ceramic liner 132. The inner surface of the ceramic liner 132 is smooth, which greatly reduces the friction when the outer cylinder 33 moves up and down.

[0077] On the other hand, the present invention also provides a downhole water distributor, including the downhole water distributor adjustment arm mentioned above. Specifically, the upper end of the cylinder 13 is provided with an upper connector 12, the upper end of the upper connector 12 is provided with an upper connecting thread 11, the lower end of the cylinder 13 is provided with a lower connector 15, and the lower end of the lower connector 15 is provided with a lower connecting thread 16.

[0078] When in use (working), water enters the cylinder 13 from top to bottom and is discharged from the spout 14.

[0079] When controlling the opening of the water nozzle 14, by inserting the head of the measuring instrument into the adapter head 21 and rotating it after it is engaged with the adapter head 21, the adapter head 21 can drive the rotating cylinder 22 to rotate, thereby driving the threaded cylinder 23 to rotate. When driving the threaded cylinder 23 to rotate, the entire adjusting arm 3 can be moved up or down to achieve the required opening of the water nozzle 14.

[0080] When the external pressure of the water distributor is greater than the internal pressure, the external pressure will push the wedge column 41 to move. The movement of the wedge column 41 can compress the spring 6. One end of the moving arm 42 is adapted to the wedge column 41, so that when the wedge column 41 moves, it can push the moving arm 42, causing the moving arm 42 to move. When the wedge column 41 pushes the moving arm 42 to the right, the gear 43 also moves to the right. The gear 43 can rotate counterclockwise under the action of the fixed tooth plate 44. Its counterclockwise rotation can push the moving tooth plate 45 to the right, achieving a double displacement. When the moving tooth plate 45 moves to the right, it can push the external pressure through the teeth 47. When the outer cylinder 33 rotates, the slider 35 also rotates, causing the slider 35 to move downwards within the inclined groove 36 and compress the spring 34. In other words, the outer cylinder 33 moves downwards while rotating. Regardless of the initial opening degree of the outer cylinder 33 and the inner cylinder 31 relative to the water nozzle 14, the displacement of the outer cylinder 33 when moving downwards alone is equal. This displacement is greater than the axial dimension of the water nozzle 14 in the water distributor, ensuring that no matter the opening degree of the outer cylinder 33 and the inner cylinder 31 relative to the water nozzle 14, the outer cylinder 33 can completely seal the water nozzle 14, preventing external liquid from entering the water distributor through the water nozzle 14.

[0081] Conversely, when the external pressure disappears, springs 36, 46, and 34 all reset, causing the outer cylinder 33 to return to the same height as the inner cylinder 31.

[0082] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0083] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A downhole water distributor regulating arm comprising a cylinder (13) and a water nozzle (14) opened on the cylinder (13), characterized in that, Also include: Adjusting arm body (3), the adjusting arm body (3) includes inner cylinder (31) and the outer cylinder (33) of the sleeve set in the periphery of inner cylinder (31), the outer cylinder (33) has axial freedom degree on inner cylinder (31), adjusting arm body (3) is used for adjusting the opening of water nozzle (14) when going down; Adjusting hole (17), the adjusting hole (17) is opened in the area deviating from water nozzle (14) on cylinder body (13), and the position of adjusting hole (17) is higher than water nozzle (14); The area opposite adjusting hole (17) of cylinder body (13) is provided with assembly cavity (5), the pressure receiving assembly (4) is assembled in assembly cavity (5), the pressure receiving assembly (4) is used for bearing the pressure outside distributor, and the pressure is converted into the power of driving outer cylinder (33) to move down in inner cylinder (31), outer cylinder (33) is used for completely plugging water nozzle (14) when moving down; The pressure receiving assembly (4) includes: Wedge-shaped column (41), the wedge-shaped column (41) can slide along the axis of adjusting hole (17); Moving arm (42), one end of moving arm (42) is adapted with wedge-shaped column (41), wedge-shaped column (41) moves along the axis of adjusting hole (17) when being subjected to external pressure, and moving arm (42) is pushed; Tooth part (47), the tooth part (47) is arranged in the area opposite assembly cavity (5) on the outer surface of outer cylinder (33), and the movable tooth plate (45) is arranged in assembly cavity (5) and is adapted with tooth part (47); Spring two (46) is installed between the end of movable tooth plate (45) away from moving arm (42) and the inner wall of assembly cavity (5); The displacement generated when the moving arm (42) is pushed is expanded by double movement structure to drive movable tooth plate (45) to move; The end away from the center of distributor in adjusting hole (17) is fixed with diaphragm (18).

2. A downhole water distributor conditioning arm according to claim 1, characterized in that: The outer periphery of the upper part of the inner cylinder (31) is provided with a ring groove (311), and the ring groove (311) is provided with a spring (34); The upper end of the outer cylinder (33) has an inner shoulder (331), and the inner shoulder (331) is located at the upper end of the spring (34), so that the outer cylinder (33) can be reset to the position where the lower end is level with the inner cylinder (31) after losing the driving force of the pressure receiving assembly (4), which indicates that the outer cylinder (33) can be reset to the position where the lower end is level with the inner cylinder (31) after the external pressure of the distributor is lower than the internal pressure, and the water distribution can continue.

3. A downhole water distributor regulator arm according to claim 2, characterised in that: The inner wall of the inner shoulder (331) is provided with a sliding block (35), and the outer circumferential surface of the inner cylinder (31) opposite the ring groove (311) is provided with a inclined groove (36) matched with the sliding block (35), and the pressure receiving assembly (4) is used to drive the outer cylinder (33) to rotate, so that the outer cylinder (33) rotates and moves downward under the control of the inclined groove (36) and the sliding block (35).

4. A downhole water distributor regulator arm according to claim 3, wherein, The double movement structure includes: Gear (43), the gear (43) is rotatably assembled on the side of the moving arm (42) away from the wedge-shaped column (41), and one side of the gear (43) is engaged with the side of the movable tooth plate (45) away from the tooth part (47); Fixed tooth plate (44), the fixed tooth plate (44) is fixed in the assembly cavity (5) and is engaged with the other side of the gear (43).

5. A downhole water distributor regulator arm according to claim 4, wherein, The adjusting hole (17) is provided with an inner convex ring (171) at one end, which is used to limit the diaphragm (18) from being burst due to excessive water pressure in the adjusting hole (17) and the assembly cavity (5).

6. A downhole water distributor regulator arm according to claim 5, wherein: The drive threaded cylinder (23) is further provided with an adjusting cylinder (32), which is integrally formed at the upper end of the inner cylinder (31) and is provided with a threaded groove (321) at the upper end of the adjusting cylinder (32), and the drive threaded cylinder (23) is rotated to drive the adjusting cylinder (32) to move vertically, so that the adjusting arm body (3) moves up and down to control the opening of the water nozzle (14). The inner wall of the cylinder body (13) is provided with a guide protrusion (131) at the opposite side of the adjusting cylinder (32), and the adjusting cylinder (32) is provided with a guide groove (322) at the opposite side, which is matched with the guide protrusion (131).

7. A downhole water distributor regulator arm according to claim 6, characterised in that: The upper end of the drive threaded cylinder (23) is provided with an integral rotating cylinder (22), the outer periphery of the rotating cylinder (22) is rotatably installed with a support ring through a bearing, the support ring is fixed on the inner wall of the cylinder body (13) through a spoke (24), and the upper end of the rotating cylinder (22) is fixedly provided with an adapter head (21).

8. A downhole water distributor conditioning arm according to claim 1, wherein: The assembly cavity (5) is communicated with the inner cavity of the cylinder body (13), so that water can enter the assembly cavity (5) to form a state that the water pressure in the assembly cavity (5) is equal to the water pressure in the cylinder body (13).

9. A downhole water distributor comprising the downhole water distributor regulating arm of any one of claims 1-8, characterized in that: The upper end of the cylinder body (13) is provided with an upper connecting head (12), and the upper end of the upper connecting head (12) is provided with an upper connecting thread (11). The lower end of the cylinder body (13) is provided with a lower connecting head (15), and the lower end of the lower connecting head (15) is provided with a lower connecting thread (16).

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