Bridge type eccentric water distributor capable of being accurately measured and adjusted and reliable in operation

Abstract

The utility model discloses a bridge type eccentric water distributor with accurate measurement and regulation and reliable operation, which comprises a positioning sleeve and a water distributor main body, the positioning sleeve is fixedly connected with the water distributor main body, the positioning sleeve is provided with a positioning notch, and the inner wall of the water distributor main body is provided with a shunt ring; an adjustable water distribution assembly is arranged in the flow dividing ring and provided with a rotary regulation and control water nozzle. The upper end of the flow dividing ring is rotationally connected with a transmission pipe, and the transmission pipe is provided with an adjusting notch. The transmission pipe is connected with the adjustable water distribution assembly through an acceleration transmission mechanism. The utility model has the advantages of simple structure, few transmission structures, high reliability, easiness in processing and low production cost; the acceleration transmission mechanism is adopted to adjust the opening degree of the water nozzle of the water distributor, the sudden stop torque value of the measuring and adjusting instrument can be increased, the instrument can be stopped in time when the water amount is adjusted and controlled in place, rapid and accurate measuring and adjusting are achieved, and the measuring and adjusting success rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oil injection and production, in particular to a bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation. Background Art

[0002] After experiencing rapid fluid extraction through intensive production and injection, large-scale mature oil fields both domestically and internationally are gradually entering a later stage of development with high water content. Deep reservoir depth and severe interlayer heterogeneity are key development priorities, making stable production increasingly challenging year by year. Waterflooding, as the primary low-cost development method, remains dominant, and precision water injection is a key development direction for further enhancing the recovery rate of waterflooded reservoirs. Furthermore, the number of highly deviated wells is increasing year by year. Existing waterflooding technologies, both concentric and eccentric, have their limitations, making them difficult to meet field development and production needs.

[0003] Intelligent dispensing, which is dominated by information technology and mechatronics, can automatically adjust the water nozzle opening without the need for regular testing and adjustment later. However, the development cost is high and it is still in the trial stage in some blocks.

[0004] Conventional water drive development, with its integrated concentric injection, measurement and adjustment process, has a dominant position in Shengli Oilfield and other fields due to its advantages such as simple measurement and adjustment and high technical reliability. However, the following problems exist during the production process: in the later stages of development, the injection well structure and other factors have affected the measurement and adjustment torque load, making it impossible for existing measurement and adjustment instruments to perform normal measurement and adjustment; the non-collective flow measurement used has large metering errors, making it difficult to meet the requirements of fine water injection.

[0005] The bridge eccentric injection process uses a bridge channel and an adjustable plug. It requires an eccentric measuring and adjusting instrument adjusting arm to adjust the plug cam and control the opening of the water distributor nozzle. The flow metering adopts a collecting flow method with high measurement accuracy, but it is difficult to meet the needs of deep buried oil reservoirs and highly heterogeneous oil reservoirs. In view of the above technical characteristics and on-site production needs, an efficient and highly reliable injection process is urgently needed.

[0006] Announcement No.: CN103982164B, discloses a concentrically adjustable eccentric valve water distributor, including a positioning sleeve, a large gear, a small gear, an adjustable eccentric valve, a ceramic valve core, a ceramic valve sleeve, etc. After well completion, the adjusting arm of the measuring and adjusting instrument drives the large gear, which drives the small gear and the ceramic valve core at the tail of the small gear shaft. The rotational motion of the measuring and adjusting instrument is converted into axial motion of the ceramic valve core. The axial displacement of the ceramic valve core and the ceramic valve sleeve controls the water nozzle opening to achieve water distribution adjustment.

[0007] This existing technology has been improved and optimized to address the problems of large leakage after closing and large measurement and adjustment torque in the bridge-type concentric injection process. However, its transmission structure is complex, the transmission mechanism is precise, and there are many moving parts. In the later stage, it is affected by scaling and impurities in the injected water, which makes it easy to get stuck and fail.

[0008] Announcement No.: CN106150451B discloses a continuous water distributor, including a rotating sleeve, a valve stem, a ceramic outer sleeve, a ceramic inner sleeve, etc. The measuring and adjusting instrument drives the rotating sleeve to cause the ceramic inner sleeve and the ceramic outer sleeve to move relative to each other, and controls the flow adjustment of the water nozzle of the water distributor, overcoming the problem of heavy workload in the existing concentric injection and eccentric injection processes, which require lowering the measuring and adjusting instrument to open the water nozzle after sealing the layered packer.

[0009] The prior art has a complex structure, is difficult to process, and is costly, and is easily blocked and fails due to the influence of water impurities in the later stage.

[0010] Announcement number: CN202673262U discloses a multifunctional, adjustable downhole water distributor with anti-backspitting function. The distributor body is cylindrical and includes a lower joint, a distributor body, a connecting sleeve, and an upper joint. A central tube runs from the middle of the distributor body through the connecting sleeve to the upper joint. Four to six water outlets are provided on the distributor body between the upper and middle portions of the distributor body and the central tube. A rotating core is provided from the lower portion of the central tube to the upper and middle portions of the lower joint. A steel ball is positioned on the lower end of the rotating core. A small compression spring pad with a steel ball groove is located below the steel ball. A small compression spring is provided between the small compression spring pad and a reducing step in the middle of the lower joint. A fixed faucet valve disc with a water hole is located between the outer periphery of the upper end of the rotating core and the inner periphery of the middle portion of the distributor body. The rotating core can be automatically adjusted to adjust the water injection volume by lowering a downhole regulator. Backspitting prevention is achieved by blocking the water holes of the fixed faucet valve disc with a shielding surface on the rotating core.

[0011] When the water spout opening is adjusted in the prior art, the position of the water spout may deviate from the preset position due to a long emergency stop time of the measuring and adjusting instrument.

[0012] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from those of the present utility model. Regarding the more technical features, technical problems to be solved and the beneficial effects of the present utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0013] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation.

[0014] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0015] A bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation includes a positioning sleeve and a water distributor body. The positioning sleeve is fixedly connected to the water distributor body, the positioning sleeve is provided with a positioning notch, and a diverter ring is provided on the inner wall of the water distributor body; an adjustable water distribution component is provided in the diverter ring, and the adjustable water distribution component is provided with a rotating control water nozzle; the upper end of the diverter ring is rotatably connected to a transmission pipe, and the transmission pipe is provided with an adjustment notch; the transmission pipe and the adjustable water distribution component are connected through an acceleration transmission mechanism.

[0016] Furthermore, the acceleration transmission mechanism includes a large gear and a small gear;

[0017] Specifically, the diverter ring is provided with a central hole, the upper end surface of the diverter ring is provided with an axial eccentric hole, the lower end of the eccentric hole is closed, and a pinion shaft and a rotary control water nozzle are provided in the eccentric hole from top to bottom. The rotary control water nozzle includes a rotating water nozzle and a fixed water nozzle. The water distributor body is provided with a liquid outlet hole connected to the eccentric hole, and the liquid outlet hole is located below the fixed water nozzle.

[0018] Specifically, a pinion is provided on the outer wall of the pinion shaft, the lower end of the pinion shaft is fixedly connected to the rotating water nozzle, the fixed water nozzle is fixedly connected to the inner wall of the eccentric hole, and the lower end surface of the rotating water nozzle contacts and seals with the upper end surface of the fixed water nozzle;

[0019] Specifically, the transmission pipe is a gear sleeve, a large gear is provided on the outer wall of the gear sleeve, a flow countersunk hole is provided at the upper end of the center hole, the flow countersunk hole and the eccentric hole have overlapping parts, the lower end of the flow countersunk hole is located between the rotating water nozzle and the small gear, and the lower end of the gear sleeve is inserted into the flow countersunk hole; the large gear is engaged with the small gear.

[0020] Furthermore, the positioning sleeve is provided with a connecting ring, the connecting ring of the positioning sleeve is connected to the inner wall of the upper joint, and the inner wall of the lower end of the upper joint is connected to the outer wall of the upper end of the water distributor body.

[0021] Furthermore, the upper end of the gear sleeve is plug-connected with the lower end of the positioning sleeve, and a downward reducing step is provided on the outer wall of the gear sleeve above the large gear, and the reducing step contacts and positions the upper end surface of the diverter ring.

[0022] Furthermore, the rotating water spout is a circular disc-shaped structure, and is provided with an elongated arc hole. The fixed water spout is a circular disc-shaped structure, and is provided with a fan-shaped water hole and a fan-shaped baffle.

[0023] Furthermore, the gear sleeve is provided with a downward sealing step between the diameter-changing step and the large gear, and a positioning plate is provided at the upper end of the eccentric hole;

[0024] Specifically, a tapered hole is provided on the lower end surface of the positioning plate, and the upper end of the pinion shaft is positioned in the tapered hole;

[0025] Specifically, the positioning plate fills the eccentric hole so that the upper side wall of the sealing step forms a circular surface contact with the central hole, and a fourth sealing ring is provided between the upper side wall of the sealing step and the central hole.

[0026] Furthermore, the water distributor body is provided with a lower bridge-type through hole, and the connecting ring is provided with an upper bridge-type through hole.

[0027] Furthermore, the water distributor body is composed of a small diameter section, a medium diameter section, and a large diameter section from top to bottom; a first transition step is formed between the small diameter section and the medium diameter section, and a second transition step is formed between the medium diameter section and the large diameter section;

[0028] Specifically, the outer wall of the upper end of the small diameter section is connected to the inner wall of the lower end of the upper joint, a diverter ring is provided on the inner wall of the medium diameter section, and the lower end of the large diameter section is connected to the lower joint.

[0029] Furthermore, it also includes a water-blocking jacket, which is sleeved on the upper joint and the outer wall of the water distributor body;

[0030] Specifically, the outer wall of the upper end of the upper joint is connected to the adjustment ring, and the adjustment ring is used to limit the maximum upward movement distance of the water retaining jacket;

[0031] Specifically, an inner ring platform is provided on the inner wall of the upper end of the water retaining jacket, and the inner ring platform is sleeved with the outer wall of the upper joint. A stress ring is provided on the inner wall of the water retaining jacket, and the stress ring is sleeved with the outer wall of the middle diameter section.

[0032] Specifically, a lower washer, a spring, and an upper washer are provided in the space between the lower end face of the inner ring platform, the lower end face of the upper joint, the upper end face of the force ring, and the first transition step. The spring is provided between the lower washer and the upper washer. The upper end face of the upper washer contacts the lower end face of the upper joint. The lower end face of the lower washer contacts the first transition platform in the initial state. When the water retaining jacket moves upward, the lower end face of the lower washer contacts the upper end face of the force ring. The second transition step limits the position of the lower end face of the water retaining jacket.

[0033] Furthermore, when the lower end surface of the water retaining jacket contacts the second transition step, the upper end surface of the force ring is flush with the first transition step. Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The utility model has a simple structure, fewer transmission structures, high reliability, easy processing and low production cost.

[0035] 2. The utility model adopts an acceleration transmission mechanism and uses a transmission method in which a large gear drives a small gear to adjust the opening of the water distributor nozzle, which can increase the emergency stop torque value of the measuring and adjusting instrument, so that the water volume can be stopped in time when the water volume is controlled in place, thereby achieving fast and accurate measurement and adjustment, and improving the success rate of measurement and adjustment.

[0036] 3. The utility model realizes automatic closing of the water retaining jacket by means of a spring, so that formation water cannot enter the water distributor and realizes formation anti-spitting.

[0037] 4. The utility model uses an eccentric multi-channel structure. In terms of flow measurement, the flow of the current layer is directly measured. Compared with other metering methods that decrease or increase layer by layer, the metering accuracy of the utility model is improved and the interference between layers is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a structural diagram of a bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation.

[0039] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0040] Figure 3 This is a schematic structural diagram of a fixed water nozzle in the utility model;

[0041] Figure 4 It is a structural diagram of the rotary water nozzle in the utility model.

[0042] In the figure: 1- positioning sleeve, 1.1- positioning notch, 1.2- connecting ring, 2- adjusting ring, 3- upper joint, 4- water retaining jacket, 4.1- force ring, 5- gear sleeve, 5.1- adjusting notch; 5.2- reducing step, 5.3- large gear, 6- water distributor body, 6.1- small diameter section, 6.2- medium diameter section, 6.3- large diameter section, 7- lower joint, 8- pinion shaft, 9- rotating water nozzle, 10- fixed water nozzle, 11- spring, 12.1- lower gasket, 12.2- upper gasket, 13- positioning plate, 14- cover plate, 15- first sealing ring, 16- second sealing ring, 17- third sealing ring, 18- fourth sealing ring, 19- stabilizing sleeve, 20- lower bridge through hole, 21- center hole, 22- eccentric hole, 23- flow sink hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Example 1:

[0045] See also Figures 1 to 4The utility model provides a bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation, including a positioning sleeve 1, the outer wall of the lower end of the positioning sleeve 1 is connected to the inner wall of the upper joint 3, the positioning sleeve 1 is provided with a positioning notch 1.1, and at least two positioning notches 1.1 are provided and are evenly distributed along the circumference of the positioning sleeve 1, and the positioning notches 1.1 are used for the positioning claws of the measuring and adjusting instrument; specifically, the positioning sleeve 1 is provided with a connecting ring 1.2, the outer wall of the connecting ring 1.2 is provided with an external thread, and the lower end of the inner wall of the upper joint 3 is provided with a threaded section, the connecting ring 1.2 of the positioning sleeve 1 is threadedly connected to the inner wall of the upper joint 3, more specifically, the inner wall of the upper joint 3 is provided with a downward limiting step, the threaded section is located between the limiting step and the lower end face of the upper joint 3, and the connecting ring 1.2 contacts the limiting step to achieve positioning.

[0046] The inner wall of the upper end of the upper joint 3 is provided with an oil pipe thread, and the inner wall of the lower end of the upper joint 3 is threadedly connected to the outer wall of the upper end of the water distributor body 6; the upper joint 3 and the water distributor body 6 are sealed by a first sealing ring 15.

[0047] A diverter ring is provided on the inner wall of the water distributor body 6, and an adjustable water distribution component is provided in the diverter ring. A transmission pipe is rotatably provided on the upper end of the diverter ring, and the upper end of the transmission pipe is rotatably connected to the positioning sleeve 1. The transmission pipe can control the opening of the adjustable water distribution component. The lower end of the water distributor body 6 is connected to the lower joint 7, and the water distributor body 6 and the lower joint 7 are sealed by a third sealing ring 17; specifically, an internal thread is provided at the lower end of the water distributor body 6, and the water distributor body 6 is connected to the upper end of the lower joint 7 by an external thread. The lower end of the water distributor body 6 and the upper end of the lower joint 7 are positioned by a shoulder, and a third sealing ring 17 is provided at the threaded connection.

[0048] Specifically, a center hole 21 is provided in the center of the diverter ring, and an axial eccentric hole 22 is provided on the upper end face of the diverter ring. The lower end of the eccentric hole 22 is closed, and a pinion shaft 8, a rotating water nozzle 9, and a fixed water nozzle 10 are sequentially provided in the eccentric hole 22 from top to bottom. The inner wall of the eccentric hole 22 is provided with a liquid outlet connected to the outside of the water distributor body 6 below the fixed water nozzle 10. A pinion is provided on the outer wall of the pinion shaft 8. The lower end of the pinion shaft 8 is fixedly connected to the rotating water nozzle 9, and the fixed water nozzle 10 is fixedly connected to the inner wall of the eccentric hole 22. The lower end face of the rotating water nozzle 9 contacts and seals with the upper end face of the fixed water nozzle 10; the transmission pipe is a gear sleeve 5, and a large gear 5.3 is provided on the outer wall of the gear sleeve 5. The upper end of the gear sleeve 5 is plug-connected with the lower end of the positioning sleeve 1 and can rotate. A downward reducing step 5.2 is provided on the outer wall of the wheel sleeve 5 above the large gear 5.3. A flow countersunk hole 23 is provided on the upper end of the center hole 21 of the diverter ring. The flow countersunk hole 23 overlaps with the eccentric hole 22. The lower end of the flow countersunk hole 23 is located between the rotating water nozzle 9 and the pinion. The lower end of the gear sleeve 5 is inserted into the flow countersunk hole 23, and positioning is achieved through the reducing step 5.2. The large gear 5.3 is engaged with the pinion; when the gear sleeve 5 rotates, the large gear 5.3 on the outer wall of the gear sleeve 5 drives the pinion shaft 8 to rotate, and the pinion shaft 8 drives the tail rotating water nozzle 9 to adjust the overlap of the grooves of the rotating water nozzle 9 and the fixed water nozzle 10, so as to realize the water injection amount adjustment of this layer and the injection amount adjustment function. The liquid enters the eccentric hole 22 from the flow countersunk hole 23 and reaches the liquid outlet through the rotating water nozzle 9 and the fixed water nozzle 10.

[0049] Preferably, the number of teeth on the large gear 5.3 is smaller than that on the small gear. The large gear 5.3 is an incomplete gear, and the teeth on the large gear 5.3 are evenly distributed, so that there is sufficient redundancy during the measurement and adjustment emergency stop process, ensuring accurate measurement and adjustment. More preferably, the gear ratio between the large gear 5.3 and the small gear is 1:2-1:5.

[0050] Preferably, the lower end of the pinion shaft 8 is a flat structure, which cooperates with the flat groove in the center of the rotating water nozzle 9 to achieve synchronous rotation.

[0051] Another preferred embodiment is that the lower end of the pinion shaft 8 is fixedly connected to the rotating water nozzle 9 by using a locking pin or a screw.

[0052] Preferably, the rotating water spout 9 is a circular disc structure, and the rotating water spout 9 is provided with a long arc hole. The fixed water spout 10 is a circular disc structure, and the fixed water spout 10 is provided with a fan-shaped water hole and a fan-shaped baffle. The water volume is controlled by controlling the overlap between the long arc hole and the fan-shaped water hole.

[0053] Preferably, the fixed faucet 10 and the eccentric hole 22 are positioned by a shoulder and connected by threads.

[0054] Preferably, the gear sleeve 5 is provided with adjustment notches 5.1, at least two of which are evenly distributed around the circumference of the gear sleeve 5, and the adjustment notches 5.1 are used for the adjustment arm of the measuring and adjusting instrument.

[0055] Furthermore, the gear sleeve 5 is provided with a downward sealing step between the reducing step 5.2 and the large gear 5.3, a positioning plate 13 is provided at the upper end of the eccentric hole 22, and a tapered hole is provided on the lower end face of the positioning plate 13. The upper end of the pinion shaft 8 is positioned with the tapered hole, and the positioning plate 13 fills the eccentric hole 22 so that the upper side wall of the sealing step forms a circular surface contact with the center hole 21. A fourth sealing ring 18 is provided between the upper side wall of the sealing step and the center hole 21 for sealing. The positioning plate 13 is fixed by screws, and the positioning plate 13 and the diverter ring are sealed by smooth surface contact.

[0056] The water distributor body 6 is further provided with a lower bridge-type through-hole 20, and the connecting ring 1.2 is provided with an upper bridge-type through-hole. The injected water is injected into the lower layer along the upper bridge-type through-hole and the lower bridge-type through-hole 20, forming a bridge-type channel with the central hole 21. When the measuring and adjusting instrument is lowered into the central hole 21 for testing, it does not affect the normal water injection of other layers; at least two upper bridge-type through-holes and lower bridge-type through-holes 20 are provided.

[0057] The positioning sleeve 1, the gear sleeve 5 and the water distributor body 6 have the same inner diameter and are concentrically installed.

[0058] It should be noted that when the steps are facing downwards, the upper path is the larger one and the lower path is the smaller one, and when the steps are facing upwards, the upper path is the smaller one and the lower path is the larger one.

[0059] Example 2:

[0060] Based on Example 1, the bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation further includes a water-blocking jacket 4 , which is sleeved on the upper joint 3 and the outer wall of the water distributor body 6 .

[0061] The water distributor body 6 is composed of a small diameter section 6.1, a medium diameter section 6.2, and a large diameter section 6.3 from top to bottom. There is a first transition step between the small diameter section 6.1 and the medium diameter section 6.2, and a second transition step between the medium diameter section 6.2 and the large diameter section 6.3. The outer wall of the upper end of the small diameter section 6.1 is threadedly connected to the inner wall of the lower end of the upper joint 3. A diverter ring is provided on the inner wall of the medium diameter section 6.2. The lower end of the large diameter section 6.3 is connected to the lower joint 7.

[0062] The inner wall of the upper end of the water retaining jacket 4 is provided with an inner ring platform, the inner ring platform is fitted with the outer wall of the upper joint 3, the outer wall of the upper end of the upper joint is threadedly connected with the adjusting ring 2, the adjusting ring 2 is used to limit the maximum upward movement distance of the water retaining jacket 4, the inner wall of the water retaining jacket 4 is provided with a force ring 4.1, the force ring 4.1 is fitted with the outer wall of the middle diameter section 6.2, and the space between the lower end face of the inner ring platform, the lower end face of the upper joint 3, the upper end face of the force ring 4.1, and the first transition step is provided. There are a lower washer 12.1, a spring 11, and an upper washer 12.2. The spring 11 is arranged between the lower washer 12.1 and the upper washer 12.2. The upper end face of the upper washer 12.2 contacts the lower end face of the upper joint 3. The lower end face of the lower washer 12.1 contacts the first transition platform in the initial state. When the water retaining jacket 4 moves upward, the lower end face of the lower washer 12.1 contacts the upper end face of the force ring 4.1. The second transition step limits the position of the lower end face of the water retaining jacket 4.

[0063] Preferably, when the lower end surface of the water retaining jacket 4 contacts the second transition step, the upper end surface of the force ring 4.1 is flush with the first transition step, so that the spring 11 can move the water retaining jacket 4 down into place.

[0064] Preferably, the second transition step is provided with a groove for the water retaining jacket 4 to be inserted, thereby extending the joint surface and reducing the processing precision requirement.

[0065] Preferably, the eccentric hole 22 is a through hole for easy processing, and the lower end of the eccentric hole 22 is threadedly connected to the cover plate 14 for sealing.

[0066] Preferably, the pinion shaft 8 is covered with a stabilizing sleeve 19 at the lower part of the pinion, a stabilizing ring is provided at the upper end of the stabilizing sleeve 19, the stabilizing ring is in contact with the inner wall of the eccentric hole 2, the lower end of the stabilizing sleeve 19 is a long shaft sleeve, the lower end of the long shaft sleeve is in contact with the rotating water nozzle 9, the stabilizing ring is above the lower end face of the flow counterbore 23, the long shaft sleeve does not contact the inner wall of the eccentric hole 22, leaving a flow channel.

[0067] Example 3:

[0068] Based on Example 2, this embodiment provides a method for using a bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation, including the following steps:

[0069] After a bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation is lowered into the stratified water injection pipe column, the positioning claw of the later measuring and adjusting instrument cooperates with the positioning slot 1.1 to achieve axial positioning, and the adjusting arm of the measuring and adjusting instrument cooperates with the adjusting slot 5.2. The adjusting arm of the measuring and adjusting instrument rotates, driving the gear sleeve 5 to rotate, and the small gear shaft 8 meshing with the gear sleeve 5 rotates, and the rotating water nozzle 9 at the tail of the small gear shaft 8 rotates accordingly. When the long arc hole of the rotating water nozzle 9 overlaps with the fan-shaped water hole of the fixed water nozzle 10, the flow channel is connected, and the flow rate under the opening is tested. If the injection volume is met, the measurement and adjustment is completed. Otherwise, the opening of the rotating water nozzle 9 is further adjusted until the predetermined injection volume is reached.

[0070] The liquid flows into the eccentric hole 22 from the overflow sink hole 23, and reaches the liquid outlet through the rotating water nozzle 9 and the fixed water nozzle 10. The high-pressure injected water squeezes the water retaining jacket 4 outside the water distributor body 6, and then compresses the spring 11 inside the water retaining jacket 4 to achieve formation injection in this layer; when the rotating water nozzle 9 is closed, the water retaining jacket 4 is automatically closed under the action of the spring 11, and the formation water cannot enter the water distributor, realizing formation anti-backflow; the maximum opening of the water retaining jacket 4 is controlled by the adjusting ring 2.

[0071] When the adjusting arm rotates, if the measured and adjusted water volume is reached, the output torque of the measuring and adjusting arm decreases. Since the acceleration transmission mechanism increases the required measuring and adjusting torque, the output torque of the measuring and adjusting arm can quickly drop below the rotational torque, achieving an emergency stop and realizing fast and accurate measurement and adjustment.

[0072] It should be noted that the measuring and adjusting instrument is a prior art, and has a positioning claw and an adjusting arm, which is clear to those skilled in the art.

[0073] All components not discussed in detail in this application and the connection methods of the components in this application are well-known technologies in the technical field and can be directly applied without further explanation.

[0074] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0075] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0076] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation, comprising a positioning sleeve and a water distributor body, wherein the positioning sleeve is fixedly connected to the water distributor body and the positioning sleeve is provided with a positioning notch, characterized in that: A diverter ring is provided on the inner wall of the water distributor body; An adjustable water distribution component is provided in the diverter ring, and the adjustable water distribution component is provided with a rotating control water nozzle; the upper end of the diverter ring is rotatably connected to the transmission pipe, and the transmission pipe is provided with an adjustment notch; the transmission pipe is connected to the adjustable water distribution component through an acceleration transmission mechanism.

2. According to claim 1, a bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation is characterized in that: The acceleration transmission mechanism includes a large gear and a small gear; The diverter ring is provided with a central hole, and the upper end surface of the diverter ring is provided with an axial eccentric hole, the lower end of the eccentric hole is closed, and a pinion shaft and a rotary control water nozzle are provided in the eccentric hole from top to bottom. The rotary control water nozzle includes a rotating water nozzle and a fixed water nozzle. The water distributor body is provided with a liquid outlet hole connected to the eccentric hole, and the liquid outlet hole is located below the fixed water nozzle; A pinion is provided on the outer wall of the pinion shaft, the lower end of the pinion shaft is fixedly connected to the rotating water nozzle, the fixed water nozzle is fixedly connected to the inner wall of the eccentric hole, and the lower end surface of the rotating water nozzle contacts and seals with the upper end surface of the fixed water nozzle; The transmission tube is a gear sleeve, a large gear is provided on the outer wall of the gear sleeve, a flow countersunk hole is provided on the upper end of the center hole, the flow countersunk hole and the eccentric hole have overlapping parts, the lower end of the flow countersunk hole is located between the rotating water nozzle and the small gear, and the lower end of the gear sleeve is inserted into the flow countersunk hole; the large gear is engaged with the small gear.

3. The bridge-type eccentric water distributor with precise measurement and adjustment and reliable operation according to claim 2 is characterized in that: The positioning sleeve is provided with a connecting ring, the connecting ring of the positioning sleeve is connected to the inner wall of the upper joint, and the inner wall of the lower end of the upper joint is connected to the outer wall of the upper end of the water distributor body.

4. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 3 is characterized in that: The upper end of the gear sleeve is plug-connected with the lower end of the positioning sleeve. A downward reducing step is provided on the outer wall of the gear sleeve above the large gear. The reducing step contacts and positions the upper end surface of the diverter ring.

5. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 2 is characterized in that: The rotating water spout is a circular disc-shaped structure, and is provided with an elongated arc hole. The fixed water spout is a circular disc-shaped structure, and is provided with a fan-shaped water hole and a fan-shaped baffle.

6. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 4 is characterized in that: The gear sleeve is provided with a downward sealing step between the diameter-changing step and the large gear, and a positioning plate is provided at the upper end of the eccentric hole; A tapered hole is provided on the lower end surface of the positioning plate, and the upper end of the pinion shaft is positioned in the tapered hole; The positioning plate fills the eccentric hole so that the upper side wall of the sealing step forms a circular surface contact with the central hole, and a fourth sealing ring is arranged between the upper side wall of the sealing step and the central hole.

7. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 3 is characterized in that: The water distributor body is provided with a lower bridge-type through hole, and the connecting ring is provided with an upper bridge-type through hole.

8. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 3 is characterized in that: The water distributor body is composed of a small diameter section, a medium diameter section, and a large diameter section from top to bottom; a first transition step is formed between the small diameter section and the medium diameter section, and a second transition step is formed between the medium diameter section and the large diameter section; The outer wall of the upper end of the small diameter section is connected to the inner wall of the lower end of the upper joint, a diverter ring is provided on the inner wall of the medium diameter section, and the lower end of the large diameter section is connected to the lower joint.

9. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 8 is characterized in that: It also includes a water-blocking jacket, which is sleeved on the upper joint and the outer wall of the water distributor body; The outer wall of the upper end of the upper joint is connected to the adjustment ring, and the adjustment ring is used to limit the maximum upward movement distance of the water retaining jacket; An inner ring platform is provided on the inner wall of the upper end of the water retaining jacket, and the inner ring platform is sleeved with the outer wall of the upper joint; a stress ring is provided on the inner wall of the water retaining jacket, and the stress ring is sleeved with the outer wall of the middle diameter section; The space between the lower end face of the inner ring platform, the lower end face of the upper joint, the upper end face of the force ring and the first transition step is provided with a lower washer, a spring and an upper washer. The spring is provided between the lower washer and the upper washer. The upper end face of the upper washer contacts the lower end face of the upper joint. The lower end face of the lower washer contacts the first transition platform in the initial state. When the water retaining jacket moves upward, the lower end face of the lower washer contacts the upper end face of the force ring. The second transition step limits the position of the lower end face of the water retaining jacket.

10. The bridge-type eccentric water distributor with accurate measurement and adjustment and reliable operation according to claim 9 is characterized in that: When the lower end surface of the water retaining jacket contacts the second transition step, the upper end surface of the force ring is flush with the first transition step.

Images