Polymer liquid electrodynamic adjustment bridge type concentric ring groove flow cone type injection distributor

Abstract

The application relates to the technical field of layered injection, and is a polymer liquid electric dynamic adjustment bridge type concentric ring groove flow cone type injection device, which comprises an upper joint, an outer protective pipe, a mounting base, a lower joint, a throttling core and a driving connection assembly, the outer protective pipe is fixedly installed at the lower end of the outer side of the upper joint, the mounting base is fixedly installed at the inner side of the lower end of the outer protective pipe, and the lower joint is fixedly installed at the inner side of the lower end of the mounting base; the inner side of the mounting base is provided with a mounting ring table, and the mounting ring table is provided with an up-down through adjustment hole. The application has the advantages of reasonable and compact structure, convenient use, multiple continuously arranged transition circular tables and adjustment circular tables, multiple pressure reduction grooves, better injection adjustment, the outer diameter of the upper end of the adjustment circular table gradually decreases from top to bottom, the adjustment circular table can be matched with a tapered hole section, the cross-sectional area of a tapered body part and the tapered hole section is changed, the injection amount is adjusted, and the application has the characteristics of stability, controllability and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of layered dispensing technology, and is a polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-type dispenser. Background Technology

[0002] The oil displacement mechanism of polymers involves adding high molecular weight polymers to the injected water to increase the viscosity of the injection system, thereby controlling the flow rate and profile, reducing cross-flow in high-permeability layers and zones, and ultimately increasing the water-driven swept volume and improving the final recovery rate.

[0003] Long-term practice has proven that polymer flooding is a significant measure for increasing crude oil production, playing a crucial role in maintaining stable oilfield production over the long term. Polymer injection, as an effective method for stabilizing and increasing production, is being vigorously promoted and applied in various oilfields across my country. Currently, most domestic oilfields employ a general injection approach, with polymers primarily advancing along high-permeability layers, resulting in lower oil displacement efficiency in medium- and low-permeability layers and uneven oil displacement. In heterogeneous multi-layered sandstone oilfields, where formation permeability varies significantly, the inter-layer contradictions are even more pronounced during polymer injection, leading to polymer waste and poor oil displacement effects. Only through segmented injection technology can this contradiction be fundamentally improved and resolved.

[0004] Chinese patent document CN 210422585U discloses a downhole steam dispenser, characterized by comprising a dispenser body, an adjusting valve stem, a spring, and a limiting head. A connecting hole and a dispenser hole are drilled below the upper internal thread of the dispenser body. The upper part of the dispenser hole is conical. A straightening hole is drilled between the bottom of the dispenser hole and the lower part of the dispenser body. The lower part of the connecting hole is open. A steam outlet hole is opened on the side wall of the dispenser body, and the steam outlet hole is connected to the dispenser hole. The spring is fitted onto the middle section of the adjusting valve stem. The lower section of the adjusting valve stem is inserted into the straightening hole, so that the upper section of the adjusting valve stem is in a vertical state. The lower end of the spring rests on the bottom surface of the dispenser hole, and the upper end of the spring abuts against the middle shoulder of the adjusting valve stem. The spring is located below the steam outlet hole. The lower part of the adjusting valve stem is connected to the limiting head, which pre-tightens the spring and positions the head of the adjusting valve stem above the dispenser hole. The lower part of the dispenser body has external threads.

[0005] Chinese patent document CN 205638403U discloses a downhole applicator for heavy oil steam injection thermal recovery wells, used for installation at the bottom end of the drilling string. Its features include: a tubing coupling, an adjusting rod, a bearing, a spring, a manifold, an injection connecting pipe, a guide tube, and a plug. The manifold has a tapered hole at its upper part, wider at the upper end and narrower at the lower end. The manifold has a central hole at its lower part, and the tapered hole and the central hole are connected by a connecting hole. The side of the manifold has an internal connecting groove. The inner connecting groove communicates with the central hole. A plug is connected to the lower part of the diverter pipe, ensuring that the steam flow in the central hole can only exit through the inner connecting groove. The dispensing connecting pipe has an outer connecting groove. The diverter pipe is inserted into the dispensing connecting pipe, forming a diversion channel between them. The inner connecting groove is aligned with the outer connecting groove. Welding is performed on the inner edge of the outer connecting groove to weld the diverter pipe and the dispensing connecting pipe together. The weld is sealed to prevent fluid in the diversion channel from flowing out of the central hole. The flow exits from the weld seam. A spring is placed inside the tapered hole. A bearing is fitted onto the adjusting rod, which then passes through the spring. The lower thread of the adjusting rod connects to the internal thread of the diverter pipe. The lower end of the spring supports the bottom of the tapered hole, and the upper end of the spring presses against the bearing, causing the bearing to be pressed against the shoulder at the upper end of the adjusting rod. By rotating the adjusting rod, the position of the bearing within the tapered hole can be changed, thus changing the flow area of ​​the tapered hole. The upper part of the connecting pipe has oil pipe threads. The lower part has an oil pipe thread, and the middle part of the injection connecting pipe has a connecting thread. The connecting thread in the middle part of the injection connecting pipe is located above the outer connecting groove. A guide cylinder is connected to the connecting thread in the middle part of the injection connecting pipe. An annular channel is formed between the lower inner wall of the guide cylinder and the outer wall of the injection connecting pipe, so that the fluid flowing out of the outer connecting groove flows downward under the guidance of the annular channel. The upper part of the adjusting rod is machined with a hexahedron, the lower part of the plug is machined with a hexahedron, and the upper part of the injection connecting pipe is connected to an oil pipe coupling.

[0006] The injector is a key piece of equipment in the stratified polymer injection process, directly affecting the performance of polymer flooding. Currently, conventional waterflooding injectors are used in oilfields for polymer solution distribution, and there is no dedicated stratified polymer injection injector. Furthermore, polymer solutions are prone to degradation under shear stress. This shearing action alters the polymer chain structure, changing the polymer's properties and functions. Therefore, the mechanical shearing effect on the polymer during injection is significant. Summary of the Invention

[0007] This invention provides a polymer liquid electrically adjustable bridge-type concentric annular groove conical dispenser, which overcomes the shortcomings of the prior art. It can effectively solve the problem that existing dispensers cannot be used for stratified dispensing; and it can further solve the problem that existing dispensers cause polymer shearing.

[0008] The technical solution of this invention is achieved through the following measures: A polymer liquid electrically adjustable bridge-type concentric annular groove conical dispenser includes an upper connector, an outer protective tube, a mounting base, a lower connector, a throttling core, and a drive connection assembly. An outer protective tube is fixedly installed on the outer side of the lower end of the upper connector, and a mounting base is fixedly installed on the inner side of the lower end of the outer protective tube. A lower connector is fixedly installed on the inner side of the lower end of the mounting base. An mounting ring platform is provided inside the mounting base, and an adjustment hole is provided on the mounting ring platform that extends vertically. An inner distribution hole communicating with the adjustment hole is provided on the outer side of the mounting base. The outer protective tube has an external distribution hole that can communicate with the internal distribution hole; the adjustment hole includes a straight hole section, an enlarged hole section and a conical hole section connected from top to bottom. The position of the enlarged hole section corresponds to the position of the internal distribution hole. The inner diameter of the enlarged hole section is larger than that of the straight hole section. The conical hole section is a frustum-shaped hole that is wider at the top and narrower at the bottom. The adjustment hole has a throttling core with its upper end located above the mounting base. The throttling core includes a straight rod part and a conical part located in the conical hole section that are fixed together from top to bottom; the upper inner side of the outer protective tube has a drive connection assembly that allows the throttling core to move up and down in the adjustment hole.

[0009] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0010] The aforementioned conical portion may include a frustum portion and a core head. The lower end of the straight rod portion is provided with at least two frustum portions from top to bottom. Each frustum portion includes a transition frustum and an adjustment frustum that are fixedly installed together from top to bottom. The transition frustum is a frustum shape that is smaller at the top and larger at the bottom, and the adjustment frustum is a frustum shape that is larger at the top and smaller at the bottom. The outer diameter of the upper end of all the adjustment frustums decreases from top to bottom. The upper end of the transition frustum located at the uppermost position is fixedly installed together with the lower end of the straight rod portion, and the lower end of the adjustment frustum located at the lowermost position is fixedly installed together with the upper end of the core head.

[0011] The lower side of the aforementioned transition frustum can smoothly transition to the upper side of the adjustment frustum.

[0012] The lower end of the aforementioned straight rod section may be provided with five frustum sections from top to bottom.

[0013] The aforementioned drive connection assembly may include a positioning cylinder, a transmission sleeve, an adjusting sleeve, and a connecting assembly. The upper end of the upper connector is provided with a positioning ring platform, the upper end of the outer protective tube is provided with a positioning cylinder, the lower end of the positioning cylinder is fixedly installed with a transmission sleeve, the lower inner part of the transmission sleeve is limited and installed with an adjusting sleeve, and the lower end of the adjusting sleeve is installed together with the upper end of the throttling core through the connecting assembly.

[0014] The aforementioned connecting components may include a clamping nut and a mounting plate. The transmission sleeve at the lower end of the position corresponding to the throttling core has an upper mounting notch with an opening facing downwards on its outer side. The mounting base at the upper end of the position corresponding to the upper mounting notch has a lower mounting notch with an opening facing upwards on its outer side. The upper end of the throttling core is located within the upper mounting notch and the mounting plate is mounted on its upper outer side. The lower clamping nut on the upper side of the mounting plate is fixedly mounted on the outer side of the upper end of the throttling core. The lower outer side of the adjusting sleeve at the position corresponding to the mounting plate has a mounting ring groove, and the outer end of the mounting plate is located within the mounting ring groove.

[0015] The transmission sleeve at the upper end of the mounting notch can be provided with a lower suspension ring platform on the inner side of the middle, and the adjustment sleeve at the upper side of the lower suspension ring platform is provided with an upper suspension ring platform on the outer side of the middle, with the lower side of the upper suspension ring platform sitting on the upper side of the lower suspension ring platform.

[0016] The above may also include O-rings, with at least one O-ring spaced vertically between the upper connector and the outer protective tube, at least one O-ring spaced vertically between the positioning cylinder and the adjusting sleeve, at least one O-ring spaced vertically between the adjusting sleeve and the lower suspension ring, at least one O-ring spaced vertically between the upper part of the mounting base and the outer protective tube, at least one O-ring spaced vertically between the lower part of the mounting base and the outer protective tube, at least one O-ring spaced vertically between the throttling core corresponding to the straight hole section and the mounting base, at least one O-ring spaced vertically between the throttling core corresponding to the tapered hole section and the mounting base, and at least one O-ring spaced vertically between the lower connector and the outer protective tube.

[0017] This invention has a reasonable and compact structure and is easy to use. By setting multiple continuously arranged transition frustums and adjustment frustums, multiple pressure-reducing grooves are formed to achieve better injection adjustment. By making the outer diameter of the upper end of the adjustment frustum decrease from top to bottom, it can meet the matching with the conical orifice section, change the cross-sectional area of ​​the conical part and the conical orifice section, and realize the adjustment of the injection volume. It has the characteristics of stability, controllability and high efficiency. Attached Figure Description

[0018] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments 1 to 8 of the present invention.

[0019] Appendix Figure 2 For the appendix Figure 1 A three-dimensional structural diagram of the throttling core.

[0020] Appendix Figure 3 For the appendix Figure 1 A three-dimensional structural diagram of the transmission sleeve.

[0021] Appendix Figure 4 For the appendix Figure 1 A three-dimensional structural diagram of the adjusting sleeve.

[0022] Appendix Figure 5 For the appendix Figure 1 A three-dimensional structural diagram of the mounting base.

[0023] The codes in the attached diagram are as follows: 1 is the upper connector, 2 is the outer protective tube, 3 is the mounting base, 4 is the lower connector, 5 is the mounting ring platform, 6 is the inner distribution hole, 7 is the outer distribution hole, 8 is the enlarged section, 9 is the straight rod section, 10 is the transition frustum, 11 is the adjusting frustum, 12 is the core head, 13 is the positioning cylinder, 14 is the transmission sleeve, 15 is the adjusting sleeve, 16 is the positioning ring platform, 17 is the clamping nut, 18 is the hanging plate, 19 is the upper mounting notch, 20 is the lower mounting notch, 21 is the mounting ring groove, 22 is the upper suspension ring platform, 23 is the lower suspension ring platform, and 24 is the O-ring seal. Detailed Implementation

[0024] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0025] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0026] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0027] Example 1: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, and 5, the polymer liquid electrically adjustable bridge-type concentric annular groove conical dispenser includes an upper connector 1, an outer protective tube 2, a mounting base 3, a lower connector 4, a throttling core, and a drive connection assembly. The outer protective tube 2 is fixedly installed on the outer side of the lower end of the upper connector 1, and the mounting base 3 is fixedly installed on the inner side of the lower end of the outer protective tube 2. The lower connector 4 is fixedly installed on the inner side of the lower end of the mounting base 3. An mounting ring platform 5 is provided inside the mounting base 3, and an adjustment hole is provided on the mounting ring platform 5. An inner flow distribution hole 6, which communicates with the adjustment hole, is provided on the outer side of the mounting base 3. The outer protective tube... 2. An external distribution hole 7 is provided on the outer side, which can communicate with the internal distribution hole 6; the adjustment hole includes a straight hole section, an enlarged hole section 8 and a conical hole section connected from top to bottom. The position of the enlarged hole section 8 corresponds to the position of the internal distribution hole 6. The inner diameter of the enlarged hole section 8 is larger than that of the straight hole section. The conical hole section is a frustum-shaped hole that is wider at the top and narrower at the bottom. The adjustment hole is provided with a throttling core with its upper end located above the mounting base 3. The throttling core includes a straight rod part 9 fixed together from top to bottom and a conical part located in the conical hole section; the upper inner side of the outer protective tube 2 is provided with a drive connection assembly that enables the throttling core to move up and down in the adjustment hole. During use, by setting a throttling core that can move up and down in the regulating hole, the conical part of the throttling core is matched with the conical section of the regulating hole, changing the cross-sectional area of ​​the conical part and the conical section. This allows the liquid to flow from the lower end of the conical section to the inner distribution hole 6 and out from the outer distribution hole 7, thereby adjusting the injection volume. It features stratified injection, adjustable stratified liquid volume, and in-well liquid volume measurement, effectively solving the problem that existing injectors cannot be applied to stratified injection.

[0028] The above-mentioned electrically adjustable bridge-type concentric annular groove conical dispenser for polymer liquids can be further optimized and / or improved according to actual needs:

[0029] Example 2: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, and 5, the conical section includes a frustum and a core 12. At least two frustums are sequentially arranged from top to bottom at the lower end of the straight rod 9. Each frustum includes a transition frustum 10 and an adjusting frustum 11, which are fixedly installed together from top to bottom. The transition frustum 10 is shaped like a frustum with a smaller upper diameter and a larger lower diameter, while the adjusting frustum 11 is shaped like a frustum with a larger upper diameter and a smaller lower diameter. The outer diameter of the upper end of all adjusting frustums 11 decreases sequentially from top to bottom. The upper end of the transition frustum 10 at the uppermost position is fixedly installed with the lower end of the straight rod 9, and the lower end of the adjusting frustum 11 at the lowermost position is fixedly installed with the upper end of the core 12. During use, by setting multiple consecutively arranged transition frustums 10 and adjusting frustums 11, multiple pressure-reducing grooves are formed, achieving better dispensing adjustment. By making the outer diameter of the upper end of the adjusting frustum 11 decrease sequentially from top to bottom, it can meet the requirements for matching with the conical bore section, changing the cross-sectional area of ​​the conical section and the conical bore section, and achieving adjustment of the dispensing volume.

[0030] Example 3: As shown in the attached document Figure 1 ,2 As shown in Figures 3, 4, and 5, the mating surface between the lower side of the transition frustum 10 and the upper side of the adjusting frustum 11 is smoothly transitioned. During use, this smooth transition design prevents the mating surface between the lower side of the transition frustum 10 and the upper side of the adjusting frustum 11 from being too sharp, which could cause shearing of the passing long molecular weight polymer, leading to viscosity loss in the long molecular weight polymer liquid. This effectively solves the problem of polymer shearing caused by existing dispensing devices.

[0031] Example 4: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, and 5, the lower end of the straight rod 9 has five frustum sections arranged from top to bottom. During use, this arrangement creates multiple pressure-reducing grooves, enabling better dispensing adjustment.

[0032] Example 5: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, and 5, the drive connection assembly includes a positioning cylinder 13, a transmission sleeve 14, an adjusting sleeve 15, and a connecting assembly. A positioning ring platform 16 is provided on the inner side of the upper end of the upper connector 1, and a positioning cylinder 13 is provided on the inner side of the upper end of the outer protective tube 2. A transmission sleeve 14 is fixedly installed on the outer side of the lower end of the positioning cylinder 13. An adjusting sleeve 15 is limited and installed on the inner side of the lower part of the transmission sleeve 14. The lower end of the adjusting sleeve 15 is connected to the upper end of the throttling core via the connecting assembly. During use, this configuration allows the positioning cylinder 13 and transmission sleeve 14 to rotate electrically, thereby causing the throttling core to move up and down within the adjusting hole, changing the cutoff area of ​​the cone section and the cone hole section, and thus adjusting the injection volume. This effectively solves the problems of existing injectors being unable to perform stratified injection, adjust the stratified fluid volume, and measure the in-well fluid volume.

[0033] Example 6: As shown in the appendix Figure 1 , 2 As shown in Figures 3, 4, and 5, the connecting assembly includes a clamping nut 17 and a mounting plate 18. The transmission sleeve 14, corresponding to the position of the throttling core, has a downward-facing upper mounting notch 19 on its lower outer side. The mounting base 3, corresponding to the position of the upper mounting notch 19, has an upward-facing lower mounting notch 20 on its upper outer side. The upper end of the throttling core is located within the upper mounting notch 19, and the mounting plate 18 is mounted on its upper outer side for limiting its movement. A clamping nut 17 is fixedly mounted on the upper outer side of the lower clamping mounting plate 18. The adjusting sleeve 15, corresponding to the position of the mounting plate 18, has a mounting ring groove 21 on its lower outer side, and the outer end of the mounting plate 18 is located within the mounting ring groove 21. During use, this configuration facilitates the up-and-down movement of the throttling core, changing the cross-sectional area of ​​the cone section and the cone hole section, thereby adjusting the injection volume.

[0034] Example 7: As attached Figure 1 , 2As shown in Figures 3, 4, and 5, a lower suspension ring platform 23 is provided on the inner side of the middle portion of the transmission sleeve 14 corresponding to the upper end position of the mounting notch 19. An upper suspension ring platform 22 is provided on the outer side of the middle portion of the adjusting sleeve 15 corresponding to the upper position of the lower suspension ring platform 23. The lower side of the upper suspension ring platform 22 sits on the upper side of the lower suspension ring platform 23. During use, this arrangement prevents the adjusting sleeve 15 from rotating with the transmission sleeve 14 and does not affect the up-and-down movement of the throttling core pulled by the adjusting sleeve 15.

[0035] Example 8: As attached Figure 1 , 2 As shown in Figures 3, 4, and 5, the system also includes O-ring seals 24. At least one O-ring seal 24 is provided vertically between the upper connector 1 and the outer protective tube 2; at least one O-ring seal 24 is provided vertically between the positioning cylinder 13 and the adjusting sleeve 15; at least one O-ring seal 24 is provided vertically between the adjusting sleeve 15 and the lower suspension ring platform; at least one O-ring seal 24 is provided vertically between the upper part of the mounting base 3 and the outer protective tube 2; at least one O-ring seal 24 is provided vertically between the lower part of the mounting base 3 and the outer protective tube 2; at least one O-ring seal 24 is provided vertically between the throttling core corresponding to the straight hole section and the mounting base 3; at least one O-ring seal 24 is provided vertically between the throttling core corresponding to the tapered hole section and the mounting base 3; and at least one O-ring seal 24 is provided vertically between the lower connector 4 and the outer protective tube 2. During use, the O-ring seals 24 ensure the sealing between the components.

[0036] Example 9: From September to October 2020, our company completed viscosity loss rate testing of the present invention in wells T71322 and T71907. The average viscosity loss rate with an injection pressure differential of 2 MPa was 4.154%, and the average viscosity loss rate with an injection pressure differential of 3 MPa was 10.924%. The present invention has the characteristics of strong business demand, large market scale, and strong innovation, advancement and practicality. In the next 3-5 years, it is expected that 350 binary composite flooding injection wells will be put into production in the Kexia, Badaowan and 530 well areas of the Seventh District, and the J1b4+5 reservoir of the Eighth District. Generally, the injection will begin in stages 2 years after chemical injection. It is expected that 100 wells will be promoted and applied within 3-5 years, with an economic benefit of 10 million yuan.

[0037] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-shaped dispenser, characterized in that... The system includes an upper connector, an outer protective tube, a mounting base, a lower connector, a throttling core, and a drive connection assembly. The outer protective tube is fixedly installed on the outer side of the lower end of the upper connector, and the mounting base is fixedly installed on the inner side of the lower end of the outer protective tube. The lower connector is fixedly installed on the inner side of the lower end of the mounting base. The mounting base has a mounting ring platform inside, with a vertically penetrating adjustment hole on the mounting ring platform. The mounting base has an inner distribution hole on the outer side that communicates with the adjustment hole, and the outer protective tube has an outer distribution hole on the outer side that communicates with the inner distribution hole. The adjustment hole includes... The system comprises, from top to bottom, a straight hole section, an enlarged hole section, and a tapered hole section connected sequentially. The position of the enlarged hole section corresponds to the position of the inner distribution hole, and the inner diameter of the enlarged hole section is larger than that of the straight hole section. The tapered hole section is a frustum-shaped hole, wider at the top and narrower at the bottom. A throttling core with its upper end positioned above the mounting base is installed inside the adjusting hole. The throttling core includes a straight rod portion fixed together from top to bottom and a tapered portion located within the tapered hole section. A drive connection assembly is provided on the inner side of the upper part of the outer protective tube, enabling the throttling core to move up and down within the adjusting hole. The drive connection assembly includes a positioning cylinder, The system comprises a transmission sleeve, an adjusting sleeve, and a connecting assembly. The upper connector has a positioning ring on its inner side at the upper end, and a positioning cylinder on its inner side at the upper end of the outer protective tube. A transmission sleeve is fixedly installed on the outer side of the lower end of the positioning cylinder. An adjusting sleeve is limited and installed on the inner side of the lower part of the transmission sleeve. The lower end of the adjusting sleeve is installed together with the upper end of the throttling core via the connecting assembly. The connecting assembly includes a clamping nut and a hanging plate. A downward-opening upper mounting notch is provided on the outer side of the lower end of the transmission sleeve corresponding to the throttling core position. A downward-opening lower mounting notch is provided on the outer side of the upper end of the mounting base corresponding to the upper mounting notch position. The upper end of the throttling core is located within the upper mounting notch, and a hanging plate is limited and installed on its outer side. A clamping nut on the upper side of the lower clamping hanging plate is fixedly installed on the outer side of the upper end of the throttling core. A mounting ring groove is provided on the outer side of the lower part of the adjusting sleeve corresponding to the hanging plate position, and the outer end of the hanging plate is located within the mounting ring groove. A lower suspension ring is provided on the inner side of the middle part of the transmission sleeve corresponding to the upper end of the upper mounting notch position. An upper suspension ring is provided on the outer side of the middle part of the adjusting sleeve corresponding to the upper side of the lower suspension ring, and the lower side of the upper suspension ring sits on the upper side of the lower suspension ring.

2. The polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-type dispenser according to claim 1, characterized in that... The conical part includes a frustum section and a core head. The lower end of the straight rod part has at least two frustum sections from top to bottom. Each frustum section includes a transition frustum and an adjustment frustum that are fixedly installed together from top to bottom. The transition frustum is a frustum shape that is smaller at the top and larger at the bottom, and the adjustment frustum is a frustum shape that is larger at the top and smaller at the bottom. The outer diameter of the upper end of all the adjustment frustums decreases from top to bottom. The upper end of the transition frustum located at the uppermost position is fixedly installed together with the lower end of the straight rod part, and the lower end of the adjustment frustum located at the lowermost position is fixedly installed together with the upper end of the core head.

3. The polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-type dispenser according to claim 2, characterized in that... The mating surface between the lower side of the transition frustum and the upper side of the adjustment frustum is smoothly transitioned.

4. The polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-type dispenser according to claim 2 or 3, characterized in that... The lower end of the straight rod has five frustum sections arranged from top to bottom.

5. The polymer liquid electrically adjustable bridge-type concentric annular groove flow cone-type dispenser according to claim 1, characterized in that... It also includes O-rings, with at least one O-ring spaced vertically between the upper connector and the outer protective tube, at least one O-ring spaced vertically between the positioning cylinder and the adjusting sleeve, at least one O-ring spaced vertically between the adjusting sleeve and the lower suspension ring, at least one O-ring spaced vertically between the upper part of the mounting base and the outer protective tube, at least one O-ring spaced vertically between the lower part of the mounting base and the outer protective tube, at least one O-ring spaced vertically between the throttling core corresponding to the straight hole section and the mounting base, at least one O-ring spaced vertically between the throttling core corresponding to the tapered hole section and the mounting base, and at least one O-ring spaced vertically between the lower connector and the outer protective tube.

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