Water distributor

Abstract

The invention provides a water distributor. The water distributor comprises an outer working barrel; the fixed water nozzle at least comprises a working section and connecting sections, the connecting sections are arranged at the two ends of the working section respectively, one connecting section is connected with the second end of the outer working barrel, and a through hole is formed in the side wall of the working section; the adjusting cylinder is movably arranged in the outer working cylinder, a movable water nozzle is arranged at one end, close to the fixed water nozzle, of the adjusting cylinder, the adjusting cylinder is provided with a connecting position connected with the electric measuring and adjusting instrument and a separating position separated from the electric measuring and adjusting instrument, and when the adjusting cylinder is located at the connecting position, the electric measuring and adjusting instrument can drive the adjusting cylinder to move in the axial direction. The movable water nozzle moves to a working position for blocking at least part of the through hole; the movable water nozzle is provided with a plurality of working positions, and when the movable water nozzle is located at the working positions, the hole areas of the through holes blocked by the movable water nozzle are different, so that the flow areas of the through holes are different. The water distributor can be applied to profile control of a separate injection well, and the situation that a profile control plugging agent blocks a channel is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection technology, in particular to a water distributor. Background Art

[0002] At present, ordinary water distributors are used in injection wells. After profile adjustment, there are two problems. Problem 1: After profile adjustment, some water wells encounter resistance during measurement and adjustment. When the injection wells are normally injected with water, the measurement and adjustment success rate is 90%. However, after the profile adjustment of the injection wells, the test instruments often encounter resistance and become stuck above the water distributor, making it difficult to lower them, and the measurement and adjustment success rate is only 50.5%. Problem 2: After profile adjustment, the wellbore is severely blocked, resulting in a well repair rate of 34.4%, affecting the development effect. Therefore, the current water distributor cannot achieve profile adjustment of injection wells.

[0003] With respect to the technical problem that the water distributor is unable to achieve profile adjustment of the injection well, no effective solution has been proposed so far. Summary of the invention

[0004] The main purpose of the present invention is to provide a water distributor to solve the technical problem that the water distributor in the prior art cannot achieve profile adjustment of injection wells.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a water distributor is provided, comprising: an outer working cylinder, an upper joint is provided at the first end of the outer working cylinder; a fixed water nozzle, the fixed water nozzle at least comprises a working section and a connecting section, connecting sections are provided at both ends of the working section, one of the connecting sections is connected to the second end of the outer working cylinder, and a through hole is opened on the side wall of the working section; a lower joint, one end of the lower joint is connected to the other connecting section of the fixed water nozzle; an adjusting cylinder, the adjusting cylinder is movably arranged in the outer working cylinder, the adjusting cylinder is located between the upper joint and the lower joint, a mobile water nozzle is provided at one end of the adjusting cylinder close to the fixed water nozzle, the adjusting cylinder has a connecting position connected to an electric measuring and adjusting instrument and a separating position separated from the electric measuring and adjusting instrument, when the adjusting cylinder is in the connecting position, the electric measuring and adjusting instrument can drive the adjusting cylinder to move in the axial direction, so that the mobile water nozzle moves to the working position of blocking at least part of the through hole; wherein the mobile water nozzle has a plurality of working positions, when the mobile water nozzle is in each working position, the hole area of ​​the mobile water nozzle blocking the through hole is set differently, so that the flow area of ​​the through hole is different.

[0006] Furthermore, the working position includes at least one water injection working position and at least one profile adjustment working position. When the movable water nozzle is in the water injection working position, the flow aperture of the through hole is D1. When the movable water nozzle is in the profile adjustment working position, the flow aperture of the through hole is D2, wherein D1<D2.

[0007] Furthermore, 6mm≤D2≤20mm.

[0008] Furthermore, when the movable water nozzle is in the water injection working position, the flow cross-section of the through hole is arranged in a rectangular shape.

[0009] Furthermore, a connection positioning groove is provided on the adjusting tube, and at least one electric elastic key is provided on the electric measuring and adjusting instrument, and the electric elastic key extends into the connection positioning groove so that the electric measuring and adjusting instrument is connected to the adjusting tube.

[0010] Furthermore, two connection positioning grooves are provided on the circumferential surface of the adjusting tube, and the two connection positioning grooves are symmetrically arranged with respect to the central axis of the adjusting tube.

[0011] Furthermore, the water distributor also includes: a positioning cylinder, which is arranged in the outer working cylinder, the first end of the positioning cylinder is connected to the fixed water nozzle, the adjusting cylinder is movably arranged in the positioning cylinder, and a positioning structure is provided on the positioning cylinder. When the adjusting cylinder is in the connection position, the positioning matching structure of the electric measuring and adjusting instrument is connected to the positioning structure to connect the positioning cylinder to the electric measuring and adjusting instrument.

[0012] Furthermore, the positioning structure is a concave positioning groove opened at the second end of the positioning tube, and the depth direction of the concave positioning groove extends along the axial direction of the positioning tube. The positioning matching structure is a positioning protrusion on the outer wall of the electric measuring and adjusting instrument, and at least part of the positioning protrusion extends into the concave positioning groove to connect the electric measuring and adjusting instrument with the positioning tube.

[0013] Furthermore, there are a plurality of concave positioning grooves, and the plurality of concave positioning grooves are evenly spaced along the circumference of the positioning tube.

[0014] Furthermore, the diameter of the working section is larger than the diameter of the connecting section, wherein one connecting section extends into the outer working cylinder, and the other connecting section extends into the lower joint.

[0015] By applying the technical solution of the present invention, the mobile water nozzle is axially moved to different working positions, so that the flow area of ​​the through hole can be different, and the water distributor can adapt to the size requirements of different flowing materials. For example, when the water distributor is used for profile adjustment, it is adjusted to a state with a larger flow area to allow the plugging agent to flow. When the water distributor is used for water injection, it is adjusted to a state with a smaller flow area to allow water to flow. The water distributor of this embodiment can be used for profile adjustment of injection wells, which can avoid the profile adjustment plugging agent from clogging the channel, improve the water injection effect, and achieve stable production in the oil field. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 An exploded schematic diagram of an embodiment of a water distributor according to the present invention is shown;

[0018] Figure 2 It shows a schematic diagram of the assembly of an embodiment of a water distributor according to the present invention;

[0019] Figure 3 A schematic diagram of a water nozzle of a water distributor according to the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. External working cylinder;

[0022] 2. Fixed water nozzle; 21. Working section; 22. Connecting section; 200. Through hole;

[0023] 3. Lower joint;

[0024] 4. Adjusting cylinder; 400. Connecting positioning groove;

[0025] 5. Move the water spout;

[0026] 6. Positioning cylinder; 600. Concave positioning groove;

[0027] 7. Upper joint. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0032] Combination Figures 1 to 3 As shown, according to a specific embodiment of the present application, a water distributor is provided.

[0033] Specifically, the water distributor includes an outer working cylinder 1, a fixed water nozzle 2, a lower joint 3 and an adjusting cylinder 4. The first end of the outer working cylinder 1 is provided with an upper joint 7; the fixed water nozzle 2 at least includes a working section 21 and a connecting section 22, and the two ends of the working section 21 are respectively provided with connecting sections 22, one of which is connected to the second end of the outer working cylinder 1, and a through hole 200 is opened on the side wall of the working section 21; one end of the lower joint 3 is connected to the other connecting section 22 of the fixed water nozzle 2; the adjusting cylinder 4 is movably arranged in the outer working cylinder 1, and the adjusting cylinder 4 is located between the upper joint 7 and the lower joint 3. A mobile water nozzle 5 is provided at one end of the adjusting cylinder 4 close to the fixed water nozzle 2. The adjusting cylinder 4 has a connection position connected to the electric measuring and adjusting instrument and a separation position separated from the electric measuring and adjusting instrument. When the adjusting cylinder 4 is in the connection position, the electric measuring and adjusting instrument can drive the adjusting cylinder 4 to move in the axial direction, so that the mobile water nozzle 5 moves to the working position for blocking at least part of the through hole 200; wherein, the mobile water nozzle 5 has a plurality of working positions. When the mobile water nozzle 5 is in each working position, the hole area of ​​the mobile water nozzle 5 blocking the through hole 200 is set differently, so that the flow area of ​​the through hole 200 is different.

[0034] By applying the technical solution of the present embodiment, the mobile water nozzle 5 is axially moved to different working positions, so that the flow area of ​​the through hole 200 can be different, and the water distributor can adapt to the size requirements of different flowing materials. For example, when the water distributor is used for profile adjustment, it is adjusted to a state with a larger flow area to allow the plugging agent to flow. When the water distributor is used for water injection, it is adjusted to a state with a smaller flow area to allow water to flow. The water distributor of this embodiment can be used for profile adjustment of injection wells, which can avoid clogging of the channel by the profile adjustment plugging agent, improve the water injection effect, and achieve stable production of the oil field.

[0035] In an exemplary embodiment of the present application, the moving water nozzle 5 is made of ceramic material.

[0036] Specifically, the working position includes at least one water injection working position and at least one profile adjustment working position. When the movable water nozzle 5 is in the water injection working position, the flow aperture of the through hole 200 is D1. When the movable water nozzle 5 is in the profile adjustment working position, the flow aperture of the through hole 200 is D2, wherein D1<D2.

[0037] Those skilled in the art should understand that when the mobile water nozzle 5 is in the water injection working position, the mobile water nozzle 5 cooperates with the fixed water nozzle 2 to form a water injection nozzle, and the water distributor is used to realize the water injection function. When the mobile water nozzle 5 is in the profile control working position, the mobile water nozzle 5 cooperates with the fixed water nozzle 2 to form a profile control nozzle, and the water distributor is used to realize the profile control function. Since the particle size of the liquid circulated by the water injection nozzle is smaller than the particle size of the plugging agent circulated by the profile control nozzle, the flow aperture D1 of the water injection nozzle is limited to be smaller than the flow aperture D2 of the profile control nozzle, which is more in line with actual use requirements.

[0038] It should be noted that there can be multiple water injection working positions and profile control working positions, that is, the flow apertures of the water injection nozzles and the profile control nozzles can be multiple to meet more specific water injection needs and profile control needs.

[0039] Preferably, 6mm≤D2≤20mm. According to actual needs, D2 can also be greater than 20mm. The setting of D2 can be adjusted according to the actual profile control needs, as long as it can allow the plugging agent to pass through and does not affect the overall pressure resistance requirement of the water distributor.

[0040] Preferably, when the movable water nozzle 5 is in the water injection working position, the flow cross section of the through hole 200 is set in a rectangular shape. The rectangular setting can make the water pressure at each position on the cross section of the through hole the same during water injection.

[0041] In an exemplary embodiment of the present application, the cross-sectional shape of the through hole 200 is set to be a rectangle, the radial line of the moving water nozzle 5 is parallel to the width direction of the through hole 200, the axial line of the moving water nozzle is parallel to the length direction of the through hole 200, the radial dimension of the moving water nozzle 5 is always greater than the width of the through hole 200, and during the axial movement of the moving water nozzle 5, the moving water nozzle 5 adjusts the flow area of ​​the through hole 200 by adjusting the opening dimension of the through hole 200 in the length direction.

[0042] Optionally, the flow cross-section of the through hole 200 may also be set to a circular, elliptical, triangular or other shape to meet different water injection requirements.

[0043] Furthermore, a connection positioning groove 400 is provided on the adjusting tube 4, and at least one electric elastic key is provided on the electric measuring and adjusting instrument, and the electric elastic key extends into the connection positioning groove 400 so as to connect the electric measuring and adjusting instrument with the adjusting tube 4. By such a configuration, when the electric measuring and adjusting instrument moves to the corresponding position, the electric elastic key is ejected so that the electric elastic key is stuck in the connection positioning groove 400, and the connection between the electric measuring and adjusting instrument and the adjusting tube 4 can be realized. When disassembling, the electric elastic key is retracted to take out the electric measuring and adjusting instrument along the axial direction. The disassembly and assembly of the electric measuring and adjusting instrument and the adjusting tube 4 is more convenient, which effectively improves the user experience of the water distributor.

[0044] Preferably, two connection positioning grooves 400 are provided on the circumference of the adjusting cylinder 4, and the two connection positioning grooves 400 are symmetrically arranged about the central axis of the adjusting cylinder 4. The two symmetrically arranged connection positioning grooves 400 can make the connection between the electric measuring and adjusting instrument and the adjusting cylinder 4 more stable, and avoid the problem of work failure caused by the separation of components during subsequent movement.

[0045] Furthermore, the water distributor also includes a positioning cylinder 6, which is arranged in the outer working cylinder 1, and the first end of the positioning cylinder 6 is connected to the fixed water nozzle 2. The adjusting cylinder 4 can be movably arranged in the positioning cylinder 6, and a positioning structure is provided on the positioning cylinder 6. When the adjusting cylinder 4 is in the connection position, the positioning matching structure of the electric measuring and adjusting instrument is connected to the positioning structure, so that the positioning cylinder 6 is connected to the electric measuring and adjusting instrument. By setting the positioning cylinder 6, the positioning connection of the electric measuring and adjusting instrument can be realized, which can save assembly time during the assembly process of the electric measuring and adjusting instrument, accurately locate the position of the electric measuring and adjusting instrument, and improve work efficiency.

[0046] Specifically, the positioning structure is a concave positioning groove 600 opened at the second end of the positioning tube 6, and the depth direction of the concave positioning groove 600 extends along the axial direction of the positioning tube 6. The positioning matching structure is a positioning protrusion on the outer wall of the electric measuring and adjusting instrument, and at least part of the positioning protrusion extends into the concave positioning groove 600 to connect the electric measuring and adjusting instrument with the positioning tube 6.

[0047] It should be understood that the electric tester (not shown in the drawings) is relatively mature in the prior art. The electric tester on the market can be rotated at one end to achieve axial movement, and a claw structure is provided at the other end. The claw structure is used to position and fix the electric tester itself to avoid problems such as shaking or falling off during the use of the instrument. The claw structure is the positioning protrusion in this embodiment. The main clamping structure of the electric tester extends into the concave positioning groove 600, or further passes through the concave positioning groove 600 and extends to the outside of the positioning tube 6, so as to achieve the positioning connection of the electric tester.

[0048] Preferably, there are multiple concave positioning grooves 600, and the multiple concave positioning grooves 600 are evenly spaced along the circumference of the positioning tube 6. The provision of multiple concave positioning grooves 600 can make the positioning and fixing effect of the electric tester better and the connection more stable.

[0049] Furthermore, the diameter of the working section 21 is larger than the diameter of the connecting section 22 , wherein one connecting section 22 extends into the outer working cylinder 1 , and the other connecting section 22 extends into the lower joint 3 .

[0050] In this embodiment, the diameter of the working section 21 is set larger than the diameter of the connecting section 22 so that the connecting section 22 extends into the remaining components. The diameter of the working section 21 can be set to be the same as the diameter of the outer working cylinder 1. The working section 21 is located between the outer working cylinder 1 and the lower joint 3 to ensure the flow of the water nozzle.

[0051] In an exemplary embodiment of the present application, the connecting section 22 is provided with both internal threads and external threads. The connecting section 22 is connected to the positioning cylinder 6 via the internal threads, and the connecting section 22 is connected to the outer working cylinder 1 via the external threads.

[0052] Furthermore, seals are provided between the outer working cylinder 1 and one of the connection sections 22 of the fixed water nozzle 2, and between the lower joint 3 and the other connection section 22 of the fixed water nozzle 2. By providing seals, the sealing of the connection between the components can be improved, which can prevent the entry of external impurities and the leakage of internal circulating substances such as oil, water, etc. from the gaps.

[0053] In an exemplary embodiment of the present application, the sealing member is a sealing ring, and two sealing rings are disposed on each connecting section 22 .

[0054] According to another specific embodiment of the present application, a preferred embodiment of a water distributor is also provided to achieve profile control of injection wells, avoid clogging of channels by profile control plugging agents, improve water injection effects, and achieve stable production in oil fields.

[0055] Specifically, the water distributor is composed of six parts, namely, an upper joint 7, a lower joint 3, an outer working cylinder 1, a positioning cylinder 6, an adjusting cylinder 4, a water nozzle, and a sealing member. Among them, the water nozzle includes a fixed water nozzle 2 and a movable water nozzle 5. The movable water nozzle 5 is connected to the adjusting cylinder 4. The switching between the profile adjustment state and the water injection state of the water nozzle is realized by the relative movement of the fixed water nozzle 2 and the movable water nozzle 5. For the convenience of explanation, the combined state structure of the fixed water nozzle 2 and the movable water nozzle 5 in the profile adjustment state is named as the profile adjustment water nozzle, and the combined state structure of the fixed water nozzle 2 and the movable water nozzle 5 in the water injection state is named as the water injection water nozzle. The profile adjustment water nozzle can be in a shape that allows 6-20mm particles to pass through, and the water injection water nozzle is rectangular. A plurality of concave positioning grooves 600 are provided on the positioning cylinder 6, and the concave positioning grooves 600 can realize the connection between the positioning cylinder 6 and the electric measuring and adjusting instrument, thereby realizing the positioning function of the electric measuring and adjusting instrument. Two electric elastic keys are provided on the outer wall of the electric measuring and adjusting instrument. During assembly, the electric elastic keys cooperate with the connecting positioning grooves 400 on the side walls of the adjusting cylinder 4 to connect the electric measuring and adjusting instrument with the adjusting cylinder 4. The two rotate together to realize the movement of the adjusting cylinder 4 along the axial direction, thereby realizing the position adjustment function of the mobile water nozzle 5.

[0056] Specifically, the structure of the nozzle is designed based on the indoor profile control particle expansion test and the performance of nozzles of different shapes. The volume of materials allowed to pass through the profile control nozzle and the water injection nozzle is different, such as Figure 3 As shown, the water injection hole of the water injection nozzle and the profile control hole of the profile control nozzle have different apertures. The shape of the profile control hole is not restricted, and the size can allow the plugging agent to pass through without affecting the overall pressure resistance requirement of the water distributor.

[0057] This embodiment can solve the following two technical problems: ① According to the measuring and adjusting mechanism of the electric measuring and adjusting instrument, the positioning cylinder 6 and the adjusting cylinder 4 of the water distributor realize the dispensing function of the water distributor. The positioning function can be realized by the four concave positioning grooves 600 on the upper part of the positioning cylinder 6, and the adjusting function can be realized by connecting the two electric elastic keys on the side of the electric measuring and adjusting instrument with the adjusting cylinder 4 to implement synchronous movement, thereby realizing the movement of the adjusting cylinder 4 along the axis; ② According to the indoor profile adjustment particle expansion test and the performance of different shapes of water nozzles, the water nozzle of the water distributor is designed to enable the water distributor to have the profile adjustment function.

[0058] In an exemplary application of this embodiment, the water distributor was used in 18 wells. Except for the failure of H1224 well due to sand production, the other wells achieved the profile adjustment of the sub-injection wells after one trip of tubing into the well, and the success rate of measurement and adjustment increased from 50.5% to 90.1%. After the water distributor of this embodiment was used, only 1 well out of 18 wells needed repair, and the other 17 wells were successful. According to the calculation of 34.4% of the repair, this item saved 184,000 yuan. At the same time, after the water distributor of this embodiment was used, one trip of tubing into the well achieved the profile adjustment of the sub-injection wells, saving construction time, high construction efficiency, and promoting the progress of water injection technology.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0061] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water distributor, characterized in that: include: An outer working cylinder (1), wherein a first end of the outer working cylinder (1) is provided with an upper joint (7); A fixed water nozzle (2), the fixed water nozzle (2) comprising at least a working section (21) and a connecting section (22), the connecting sections (22) being respectively arranged at both ends of the working section (21), one of the connecting sections (22) being connected to the second end of the outer working cylinder (1), and a through hole (200) being provided on a side wall of the working section (21); A lower joint (3), one end of which is connected to the other connecting section (22) of the fixed faucet (2); An adjusting cylinder (4), wherein the adjusting cylinder (4) is movably arranged in the outer working cylinder (1), the adjusting cylinder (4) is located between the upper joint (7) and the lower joint (3), a movable water nozzle (5) is arranged at one end of the adjusting cylinder (4) close to the fixed water nozzle (2), the adjusting cylinder (4) having a connection position connected to an electric measuring and adjusting instrument and a separation position separated from the electric measuring and adjusting instrument, and when the adjusting cylinder (4) is in the connection position, the electric measuring and adjusting instrument can drive the adjusting cylinder (4) to move in the axial direction, so that the movable water nozzle (5) moves to a working position for blocking at least a part of the through hole (200); The movable water nozzle (5) has a plurality of working positions. When the movable water nozzle (5) is in each of the working positions, the hole area of ​​the through hole (200) blocked by the movable water nozzle (5) is set differently, so that the flow area of ​​the through hole (200) is different.

2. The water distributor according to claim 1, characterized in that: The working positions include at least one water injection working position and at least one profile control working position. When the movable water nozzle (5) is in the water injection working position, the flow aperture of the through hole (200) is D1. When the movable water nozzle (5) is in the profile control working position, the flow aperture of the through hole (200) is D2, wherein D1<D2.

3. The water distributor according to claim 2, characterized in that: 6mm≤D2≤20mm.

4. The water distributor according to claim 2, characterized in that: When the movable water nozzle (5) is in the water injection working position, the flow cross section of the through hole (200) is arranged in a rectangular shape.

5. The water distributor according to claim 1, characterized in that: The adjusting cylinder (4) is provided with a connection positioning groove (400), and the electric measuring and adjusting instrument is provided with at least one electric elastic key, which extends into the connection positioning groove (400) so as to connect the electric measuring and adjusting instrument with the adjusting cylinder (4).

6. The water distributor according to claim 5, characterized in that: Two connection positioning grooves (400) are provided on the circumferential surface of the adjustment cylinder (4), and the two connection positioning grooves (400) are symmetrically arranged with respect to the central axis of the adjustment cylinder (4).

7. The water distributor according to claim 1, characterized in that: The water distributor also includes: A positioning cylinder (6), wherein the positioning cylinder (6) is arranged in the outer working cylinder (1), the first end of the positioning cylinder (6) is connected to the fixed water nozzle (2), the adjusting cylinder (4) is movably arranged in the positioning cylinder (6), and a positioning structure is provided on the positioning cylinder (6). When the adjusting cylinder (4) is in the connecting position, the positioning matching structure of the electric measuring and adjusting instrument is connected to the positioning structure, so that the positioning cylinder (6) is connected to the electric measuring and adjusting instrument.

8. The water distributor according to claim 7, characterized in that: The positioning structure is a concave positioning groove (600) provided at the second end of the positioning tube (6), the depth direction of the concave positioning groove (600) extending along the axial direction of the positioning tube (6), and the positioning matching structure is a positioning protrusion on the outer wall of the electric measuring and adjusting instrument, at least part of the positioning protrusion extends into the concave positioning groove (600) to connect the electric measuring and adjusting instrument with the positioning tube (6).

9. The water distributor according to claim 8, characterized in that: There are a plurality of concave positioning grooves (600), and the plurality of concave positioning grooves (600) are evenly spaced along the circumference of the positioning cylinder (6).

10. The water distributor according to claim 1, characterized in that: The diameter of the working section (21) is larger than the diameter of the connecting section (22), wherein one of the connecting sections (22) extends into the outer working cylinder (1), and the other connecting section (22) extends into the lower joint (3).

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