Rotary jet flow unblocking tool
By employing a three-stage turbine series connection, dry and wet separation of the bearing cavity, and a multi-angle injection hole design, the problems of unreliable sealing and insufficient torque in existing rotary jet tools have been solved, achieving a highly efficient downhole unblocking effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 中国石油大学(北京)克拉玛依校区
- Filing Date
- 2026-04-14
- Publication Date
- 2026-05-12
AI Technical Summary
The bearing seals of existing rotary jet tools are prone to failure, the dynamic seals have short lifespans, and the torque output is insufficient, resulting in short tool lifespans and an inability to effectively handle high-hardness blockages.
It adopts a three-stage turbine series structure, a dry and wet separation design for the bearing cavity, a rotary sealing assembly, and multi-angle injection holes to achieve the step-by-step conversion and efficient transfer of fluid energy, ensuring sealing reliability and torque output.
It improves the sealing reliability and torque output of the tool, extends its service life, can effectively handle high-hardness blockages, and has a powerful rock-breaking ability and a multi-dimensional jet field.
Smart Images
Figure CN122014132A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of downhole operation equipment technology, and is a rotating jet unblocking tool. Background Technology
[0002] In the later stages of oil and gas field development, wax buildup, scale accumulation, and screen blockage in the wellbore are the main reasons for decreased production. Rotary jetting tools with coiled tubing are currently the mainstream method for unclogging these blockages. Existing rotary jetting tools typically use high-pressure fluid to drive an internal turbine, which in turn rotates the nozzle.
[0003] Chinese patent document CN216429534U discloses a segmented unblocking device for horizontal wells, which includes a tubing string and an injection pipe fitted outside the tubing string. The injection pipe has injection holes that can communicate with the inner cavity of the tubing string. An injection mechanism is provided inside the tubing string. The injection mechanism includes a dual-turbine mechanism, which includes a rotating shaft and a front turbine and a rear turbine mounted on the rotating shaft.
[0004] Chinese patent document CN114837635B discloses a downhole dual-turbine cavitation generator, comprising a tubing, an O-ring, a sleeve, a housing, an upper turbine, a lower turbine, a nozzle guide, and a nozzle cylinder. The upper turbine is located at the upper end of the housing and consists of an inner ring, blades, and an outer ring. The thickness of the upper turbine blades gradually increases from top to bottom, and the blades rotate counter-clockwise. The lower turbine is located at the lower end of the housing and consists of an inner ring, blades, an outer ring, and a threaded hole below the inner ring. The thickness of the lower turbine blades gradually increases from top to bottom, and the blades rotate clockwise. The nozzle guide is located below the lower turbine. The upper part of the flow guide has an external thread, which is connected to the threaded hole below the inner ring of the lower turbine via a thread. The wall surface of the nozzle flow guide has 10-14 rows of tapered through holes I evenly distributed along the circumferential direction, with 4-6 tapered through holes I evenly distributed along the axial direction in each row. The diameter of the tapered through holes I gradually decreases from the inside to the outside. The nozzle cylinder is located below the nozzle flow guide. The upper part of the inner wall of the nozzle cylinder has an internal thread, which is connected to the external thread of the housing via a thread. The wall surface of the nozzle cylinder has 12-16 rows of tapered through holes II evenly distributed along the circumferential direction, with 6-8 tapered through holes II evenly distributed along the axial direction in each row. The diameter of the tapered through holes II gradually decreases from the inside to the outside. The maximum diameter of the tapered through holes II is smaller than the minimum diameter of the tapered through holes I.
[0005] However, existing technologies have the following drawbacks: rapid bearing seal failure. In traditional designs, high-pressure fluid often flows directly through or surrounds the bearing assembly. Solid particles in the fluid (such as fracturing sand and formation rock cuttings) can easily penetrate the bearing cavity, causing the bearing to seize or be damaged, severely affecting the tool's service life. Short dynamic seal life. The high-pressure dynamic seal structure between the rotating and stationary parts is complex. Under high speed and sand-containing fluid scouring, it is prone to end face wear or spring fatigue, leading to leakage. This prevents the hydraulic energy from being effectively transferred to the nozzle, reducing jet efficiency and potentially causing tool failure. Insufficient torque output. Existing single-stage turbine structures have limitations in energy conversion efficiency. When dealing with high-hardness blockages (such as hard scale and cement plugs), the tool often "stops" due to insufficient output torque, making it unable to complete cutting operations. Summary of the Invention
[0006] This invention provides a rotary jet unblocking tool that overcomes the shortcomings of the prior art and can effectively solve the problems of unreliable sealing and insufficient torque in existing unblocking tools.
[0007] The technical solution of this invention is achieved through the following measures: A rotating jet unblocking tool includes a connecting cylinder, a guide shell, a sealing tube, a drive shaft, turbines, a rotating sealing assembly, and a rotating housing. A guide shell is fixedly installed on the inner side of the upper part of the connecting cylinder. The guide shell is funnel-shaped, wider at the top and narrower at the bottom. Several guide holes with internal and external communication are distributed circumferentially at intervals on the outer side of the guide shell. The lower center of the guide shell is fixedly installed together with the upper end of the sealing tube. A drive shaft is rotatably installed inside the sealing tube. Several turbines are fixedly installed at intervals on the outer side of the upper end of the drive shaft, corresponding to the position above the guide shell. A connecting plate is fixedly installed at the lower end of the drive shaft corresponding to the position below the sealing tube. A rotary sealing assembly is provided between the upper end of the connecting plate and the lower end of the connecting cylinder. A rotating housing is fixedly installed on the outside of the connecting plate. A spray chamber is provided on the inside of the rotating housing. Several flow holes for the spray chamber are distributed at intervals along the circumference at the upper end of the connecting plate. Several first spray holes, several second spray holes and one third spray hole are distributed at intervals on the lower outer side of the rotating housing. A first nozzle is fixedly installed in each first spray hole, a second nozzle is installed in each second spray hole, and a third nozzle is installed in the third spray hole.
[0008] The following are further optimizations and / or improvements to the above-mentioned technical solution: Three turbines can be fixedly installed at intervals on the upper outer side of the aforementioned drive shaft. Each turbine includes several blades that are fixedly installed at intervals along the circumference on the outer side of the drive shaft.
[0009] The middle part of the aforementioned sealing tube can protrude outward to form a bearing cavity, and several bearings fitted onto the outside of the transmission shaft are arranged at intervals on the inner side of the bearing cavity.
[0010] The aforementioned rotary sealing assembly may include a stationary ring, a thrust ring, a rotating ring, a sealing ring, a clamping ring, and an elastic reset element. A connecting inner ring platform is fixedly installed on the inner side of the lower end of the connecting cylinder. A stationary ring is fixedly installed on the inner side of the connecting inner ring platform. A thrust ring is fitted on the inner side of the lower end of the stationary ring. A rotating ring is provided at the lower end of the thrust ring. The lower end of the rotating ring is fixedly installed together with the upper end of the connecting disc. A clamping step surface is provided on the inner side of the rotating ring. An installation ring groove is provided at the lower end of the thrust ring. A sealing ring and a clamping ring are arranged sequentially from top to bottom in the installation ring groove. An elastic reset element is provided between the clamping ring and the clamping step surface.
[0011] The aforementioned elastic reset component may include several compression springs. Several upward-opening limiting grooves are distributed circumferentially on the pressing step surface. Each limiting groove is equipped with a compression spring whose upper end is fixedly connected to the lower side of the pressing ring. A sealing ring is fitted in the mounting ring groove corresponding to the outer position of the pressing ring. The lower end of the sealing ring is fixedly installed together with the upper end of the moving ring.
[0012] The lower end of the aforementioned rotating housing can protrude outward to form a spherical crown-shaped guide portion. The second and third injection holes are spaced apart on the lower outer side of the guide portion. Corresponding to the position above the guide portion, the lower outer side of the rotating housing has two radially penetrating first injection holes spaced apart along the circumference.
[0013] This invention features a reasonable and compact structure. In use, the upper end of the connecting cylinder is connected to a string of pipes, through which high-pressure fluid is introduced. After impacting the turbine, the high-pressure fluid is forced through the guide holes on the guide shell and enters the annular flow channel formed between the inner wall of the connecting cylinder and the outer wall of the sealing pipe. The fluid flows within the annular flow channel, bypasses the sealing pipe, and then, constrained by the rotating sealing assembly, converges into the injection chamber of the rotating housing. Finally, it is ejected from the first, second, and third nozzles. This structure effectively solves the problems of existing drive shafts easily jamming due to fluid ingress, short seal life, and insufficient rock-breaking torque. It has the advantages of reliable sealing, high output torque, and long service life. Attached Figure Description
[0014] Appendix Figure 1 These are schematic diagrams of the main structure of embodiments one to six of the present invention.
[0015] Appendix Figure 2 These are schematic diagrams of the main cross-sectional structure of embodiments one to six of the present invention.
[0016] Appendix Figure 3 This is a top view of the connecting disk in Embodiments 1 to 6 of the present invention.
[0017] Appendix Figure 4 This is a schematic diagram of the three-dimensional structure of the blades and guide shells in embodiments two to six of the present invention. Figure 1 .
[0018] Appendix Figure 5 This is a schematic diagram of the three-dimensional structure of the blades and guide shells in embodiments two to six of the present invention. Figure 2 .
[0019] Appendix Figure 6 This is a front view structural diagram of the rotary sealing assembly in embodiments four to six of the present invention.
[0020] Appendix Figure 7 These are bottom-view structural diagrams of embodiments one through six of the present invention.
[0021] The codes in the attached diagram are as follows: 1 is the connecting cylinder, 2 is the guide shell, 3 is the drive shaft, 4 is the rotating shell, 5 is the guide hole, 6 is the sealing tube, 7 is the connecting plate, 8 is the injection chamber, 9 is the flow hole, 10 is the first nozzle, 11 is the second nozzle, 12 is the third nozzle, 13 is the blade, 14 is the bearing, 15 is the bearing cavity, 16 is the stationary ring, 17 is the thrust ring, 18 is the moving ring, 19 is the sealing ring, 20 is the clamping ring, 21 is the connecting inner ring platform, 22 is the mounting ring groove, 23 is the clamping step surface, 24 is the compression spring, 25 is the limiting groove, 26 is the sealing ring, and 27 is the guide part. Detailed Implementation
[0022] 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.
[0023] 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 the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.
[0024] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1 , 2As shown in Figure 3, the rotating jet unblocking tool includes a connecting cylinder 1, a guide shell 2, a sealing tube 6, a drive shaft 3, turbines, a rotating sealing assembly, and a rotating housing 4. The guide shell 2 is fixedly installed on the inner side of the upper part of the connecting cylinder 1. The guide shell 2 is funnel-shaped, wider at the top and narrower at the bottom. Several internally and externally communicating guide holes 5 are distributed circumferentially along the outer side of the guide shell 2. The lower center of the guide shell 2 is fixedly installed together with the upper end of the sealing tube 6. The drive shaft 3 is rotatably installed inside the sealing tube 6. Several turbines are fixedly installed vertically on the outer side of the upper end of the drive shaft 3, corresponding to the position above the guide shell 2. Turbines are fixedly installed vertically on the lower side of the sealing tube 6. A connecting plate 7 is fixedly installed at the lower end of the drive shaft 3. A rotary sealing assembly is provided between the upper end of the connecting plate 7 and the lower end of the connecting cylinder 1. A rotating housing 4 is fixedly installed on the outer side of the connecting plate 7. A spray chamber 8 is provided on the inner side of the rotating housing 4. Several flow holes 9 are distributed around the upper end of the connecting plate 7 along the circumference and are connected to the spray chamber 8. Several first spray holes, several second spray holes and one third spray hole are distributed around the lower outer side of the rotating housing 4. A first nozzle 10 is fixedly installed in each first spray hole, a second nozzle 11 is installed in each second spray hole, and a third nozzle 12 is installed in the third spray hole.
[0025] According to the requirements, the guide shell 2 is threadedly connected to the connecting cylinder 1. The guide shell 2 can also be a flared structure with a flared mouth. There are four guide holes 5 that are connected inside and outside distributed circumferentially on the outer side of the guide shell 2. The central axis of the guide hole 5 is parallel to the central axis of the drive shaft 3. The projection of the guide hole 5 on the horizontal plane is circular. The rotating shell 4 is a cylindrical structure with an open top and a closed bottom. There are several grooves with upward openings evenly distributed circumferentially on the outer side of the rotating shell 4. The drive shaft 3 connects several turbines together to form a multi-stage turbine series structure.
[0026] In use, the upper end of the connecting cylinder 1 is connected to the pipe string, and high-pressure fluid is introduced into the pipe string. After impacting the turbine, the high-pressure fluid is forced through the guide hole 5 on the guide shell 2 and enters the annular flow channel formed between the inner wall of the connecting cylinder 1 and the outer wall of the sealing pipe 6. The fluid flows in the annular flow channel, bypasses the sealing pipe 6, and then, under the constraint of the rotating sealing assembly, flows into the injection chamber 8 of the rotating housing 4, and is then ejected from the first nozzle 10, the second nozzle 11, and the third nozzle 12. This structure effectively solves the problems of the existing drive shaft 3 being prone to jamming due to liquid ingress, short sealing life, and insufficient rock-breaking torque, and has the advantages of reliable sealing, large output torque, and long service life.
[0027] The above-mentioned rotating jet unblocking tool can be further optimized and / or improved according to actual needs: Example 2: As an optimization of the above examples, as shown in the appendix. Figure 2 , 4 As shown in Figure 5, three turbines are fixedly installed at intervals on the upper outer side of the drive shaft 3. Each turbine includes several blades 13 that are fixedly installed at intervals along the circumference on the outer side of the drive shaft 3.
[0028] Three turbines are fixedly mounted on the outside of the drive shaft 3, forming a three-stage turbine series structure. During operation, the fluid sequentially impacts the blades 13 of the three turbines, converting the fluid kinetic energy into rotational torque on the drive shaft 3 step by step, thereby driving the rotating housing 4 and the nozzle to rotate. The fluid sequentially impacts the three sets of blades 13, thus converting the fluid kinetic energy into rotational torque on the drive shaft 3 step by step. Compared to a single-stage turbine, this structure significantly improves the tool's load-driving capability at low displacements, resulting in a substantial increase in output torque.
[0029] After the high-pressure fluid enters the connecting cylinder 1, it impacts the three turbines in sequence. This invention employs a three-stage blade series structure 13. Its core advantage lies in the step-by-step extraction of fluid kinetic energy. Based on the angular momentum theorem of fluid machinery, the theoretical torque generated by the fluid on a single-stage turbine is... (i=1, 2, 3) can be represented as: In the above formula, Fluid density, kg / m³ 3 Q represents the flow rate through the turbine, m 3 / s; Let be the circumferential velocity component of the fluid at the turbine inlet, in m / s; Let be the circumferential velocity component of the fluid at the turbine outlet, in m / s; Where is the turbine inlet radius, in meters; Where is the turbine outlet radius, in meters; For hydraulic efficiency.
[0030] In this invention, due to the adoption of a three-stage turbine series design, after the fluid performs work through the first-stage turbine, it is rectified by the blades 13, retaining some residual kinetic energy before entering the next-stage turbine. Therefore, the total torque output by the drive shaft 3... Satisfies the superposition relationship: Compared to traditional single-level tools (only ), under the same displacement Q and fluid medium Although the fluid energy decreases stepwise with increasing number of stages (i.e., ... However, the total output torque It still achieves 2.0-2.5 times the efficiency of a single-stage structure, thus enabling this tool to drive the rotating housing 4 to rotate the nozzle and remove scale from the pipe wall even at low discharge rates.
[0031] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 2 , 4 As shown in Figure 5, the middle part of the sealing tube 6 protrudes outward to form a bearing cavity 15. Several bearings 14, which are mounted on the outside of the transmission shaft 3, are arranged at intervals on the inner side of the bearing cavity 15.
[0032] Based on the requirements, bearing 14 utilizes existing known technologies, such as deep groove ball bearings and thrust ball bearings. During use, the bearing cavity 15 is filled with high-temperature resistant grease, achieving physical isolation between the inside and outside of the bearing cavity 15, improving sealing reliability. The bearing 14 reduces friction between the drive shaft 3 and the sealing tube 6. An annular flow channel is formed between the sealing tube 6 and the connecting cylinder 1, achieving dry and wet separation of the bearing 14. This ensures the flow area while achieving physical isolation between the high-pressure fluid and the bearing 14 assembly. A three-stage turbine series connection enhances the rock-breaking torque, and the rotary sealing assembly ensures efficient output of the high-pressure jet.
[0033] After flowing through the turbine assembly, the fluid is blocked by the sealing pipe 6. To ensure that the fluid can smoothly pass through the guide hole 5 into the annular flow channel, the design follows the fluid continuity equation: In the above formula, The cross-sectional area of the annular flow channel is m. 2 n represents the number of guide holes 5 (n=4 in this embodiment); The flow area of a single guide hole 5 is m. 2 ; The velocity of the fluid within a single guide hole 5 is in m / s.
[0034] To prevent excessive local resistance loss within the annular flow channel (which would reduce the jet energy of the terminal nozzle), this application controls the equivalent diameter of the annular flow channel in its structural design to ensure... (The cross-sectional area of the annular flow channel is greater than or equal to the cross-sectional area of the inlet tube), so that the fluid can bypass the bearing cavity 15 with lower flow resistance, achieving physical isolation while ensuring energy transmission efficiency.
[0035] Example 4: As an optimization of the above examples, as shown in the appendix. Figure 2 , 3 As shown in Figure 6, the rotary sealing assembly includes a stationary ring 16, a thrust ring 17, a rotating ring 18, a sealing ring 19, a clamping ring 20, and an elastic reset component. A connecting inner ring platform 21 is fixedly installed on the inner side of the lower end of the connecting cylinder 1. A stationary ring 16 is fixedly installed on the inner side of the connecting inner ring platform 21. A thrust ring 17 is fixedly installed on the lower end of the stationary ring 16. A rotating ring 18 is provided at the lower end of the thrust ring 17. The lower end of the rotating ring 18 is fixedly installed together with the upper end of the connecting disc 7. A clamping step surface 23 is provided on the inner side of the rotating ring 18. An installation ring groove 22 is provided at the lower end of the thrust ring 17. A sealing ring 19 and a clamping ring 20 are arranged sequentially from top to bottom in the installation ring groove 22. An elastic reset component is provided between the clamping ring 20 and the clamping step surface 23.
[0036] During use, the elastic reset element acts on the lower end face of the clamping ring 20. After the clamping ring 20 squeezes the sealing ring 19, the sealing ring 19 expands and seals the gap between the moving ring 18 and the inner wall of the mounting ring groove 22. In this way, the moving ring 18 can also maintain the seal with the thrust ring 17 when it rotates with the connecting plate 7 and the drive shaft 3, thereby improving the sealing performance of the injection chamber 8, ensuring the pressure of the injection chamber 8, and thus increasing the flow rate of the fluid after it flows out of the first nozzle 10, the second nozzle 11 and the third nozzle 12, ensuring the injection effect and the unblocking effect.
[0037] Example 5: As an optimization of the above examples, as shown in the appendix. Figure 2 , 6 As shown, the elastic reset component includes several compression springs 24. Several upward-opening limiting grooves 25 are distributed along the circumference of the pressing step surface 23. Each limiting groove 25 is equipped with a compression spring 24 whose upper end is fixedly connected to the lower side of the pressing ring 20. A sealing ring 26 is fitted in the mounting ring groove 22 corresponding to the outer position of the pressing ring 20. The lower end of the sealing ring 26 is fixedly installed together with the upper end of the moving ring 18.
[0038] As required, the lower end of the sealing ring 26 is integrally set with the moving ring 18. During use, the compression spring 24 acts on the lower end of the clamping ring 20, causing the lower end of the clamping ring 20 to press against the sealing ring 19. After the sealing ring 19 expands, it seals the inner ring wall of the sealing ring 26 and the inner ring wall of the mounting ring groove 22, thereby ensuring that the sealing ring 26 maintains the sealing effect with the thrust ring 17 when it is driven by the drive shaft 3.
[0039] When the fluid reaches the rotating housing 4, the rotary sealing assembly activates. The rotary sealing assembly of this invention possesses an adaptive characteristic of "the higher the pressure, the tighter the seal," and its mechanical principle is as follows: Closing force on the end faces of moving ring 18 and thrust ring 17 It mainly consists of the preload of the compression spring 24 and the hydrostatic pressure, and the specific pressure of the sealing end face. (End face specific pressure) The net remaining closing force per unit area acting on the sealing ring 26 can be expressed as: In the above formula, The initial specific pressure, Pa, generated by the compression spring 24 ensures fit under low or no pressure conditions; Where is the pressure of the downhole high-pressure fluid, Pa; K is the load factor (determined by the ratio of the pressure-bearing area of the dynamic ring 18 to the sealing surface area, K>1 in this design); This is the membrane pressure coefficient (usually taken as 0.5).
[0040] Due to the design, K> Therefore, when the fluid pressure When it rises, The term increases accordingly, leading to a higher specific pressure at the sealing end face. It rises automatically.
[0041] The rotary sealing assembly of the present invention can enhance the sealing effect by utilizing the pressure of the working fluid itself, thereby effectively blocking the end of the annular flow channel and forcing the fluid to flow into the rotary housing 4 in its entirety.
[0042] Example 6: As an optimization of the above examples, as shown in the appendix Figure 1 , 2 As shown in Figures 7 and 8, the lower end of the rotating housing 4 protrudes outward to form a spherical guide portion 27. The second and third injection holes are spaced apart on the lower outer side of the guide portion 27. Corresponding to the position above the guide portion 27, there are two radially penetrating first injection holes spaced apart along the circumference on the lower outer side of the rotating housing 4.
[0043] The third nozzle 12 in the third jet hole is a forward cutting nozzle with a jet angle of 0 degrees. The water jet is used to overcome the hard blockage in front. There are two second jet holes. The two second nozzles 11 in the second jet hole are hole-enlarging nozzles with a jet angle of 60 degrees. They are used to crush large rock fragments and establish backward discharge. There are two first jet holes. The two first nozzles 10 in the first jet hole are radial cleaning nozzles with a jet angle of 90 degrees. They use the centrifugal jet generated by rotation to clean the scale on the pipe wall.
[0044] The high-pressure fluid is ultimately ejected from the first nozzle 10, the second nozzle 11, and the third nozzle 12. The jet velocity at the nozzle exit... (m / s) is derived from Bernoulli's equation: In the above formula, For speed coefficient (usually) ); The pressure difference across the nozzle is expressed in Pa. Fluid density, kg / m³ 3 .
[0045] The impact force of the jet on scale or blockages on the well wall According to the momentum theorem, this can be expressed as: In the above formula, Fluid density, kg / m³ 3 ; The fluid volumetric flow rate, m 3 / s; The jet velocity at the nozzle exit is in m / s. The jet impact angle is [value].
[0046] Compared with the prior art, this application has the following significant advantages: Extremely high reliability (protection of bearing 14): The design of the guide hole 5 and the annular flow channel creates a bypass in terms of fluid dynamics, allowing the high-pressure sand-containing fluid to completely bypass the bearing cavity 15. The bearing cavity 15 achieves fully enclosed dry lubrication (or simple oil lubrication), which completely solves the industry problem of bearing 14 seizing due to water and sand ingress, and greatly extends the tool life.
[0047] Excellent sealing performance: The integrated sealing structure, with the dynamic ring 18 and rotating housing 4 integrated into one design, reduces leakage points. Moreover, it utilizes downhole fluid pressure to achieve self-sealing. The higher the pressure, the tighter the seal, ensuring efficient transfer of hydraulic energy to the nozzle.
[0048] Strong rock-breaking ability: The three-stage turbine structure makes full use of the residual kinetic energy of the fluid, significantly improving the output torque (2.0-2.5 times that of a single stage). Combined with the multi-dimensional jet field of nozzles with three injection angles, it has drilling, hole enlargement and cleaning functions, and can deal with complex hard scale.
[0049] The above technical features constitute various 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 rotating jet unblocking tool, characterized in that... The device includes a connecting cylinder, a guide shell, a sealing tube, a drive shaft, turbines, a rotary sealing assembly, and a rotary housing. A guide shell, funnel-shaped with a wider top and narrower bottom, is fixedly installed on the inner side of the upper part of the connecting cylinder. Several internally and externally communicating guide holes are distributed circumferentially along the outer side of the guide shell. The lower center of the guide shell is fixedly installed together with the upper end of the sealing tube. A drive shaft is rotatably installed inside the sealing tube. Several turbines are fixedly installed vertically along the outer side of the upper end of the drive shaft, corresponding to the position above the guide shell. A connecting plate is fixedly installed at the lower end of the drive shaft, corresponding to the position below the sealing tube. A rotary sealing assembly is provided between the upper end of the connecting plate and the lower end of the connecting cylinder. A rotary housing is fixedly installed on the outer side of the connecting plate. An injection chamber is provided inside the rotary housing. Several flow holes connecting to the injection chamber are distributed circumferentially along the upper end of the connecting plate. Several first injection holes, several second injection holes, and one third injection hole are distributed circumferentially along the outer side of the lower part of the rotary housing. A first nozzle is fixedly installed in each first injection hole, a second nozzle is installed in each second injection hole, and a third nozzle is installed in the third injection hole.
2. The rotating jet unblocking tool according to claim 1, characterized in that... Three turbines are fixedly installed at intervals on the upper outer side of the drive shaft. Each turbine consists of several blades that are fixedly installed at intervals along the circumference on the outer side of the drive shaft.
3. The rotating jet unblocking tool according to claim 1 or 2, characterized in that... The middle part of the sealing tube protrudes outward to form a bearing cavity, and several bearings are arranged at intervals on the inner side of the bearing cavity and fitted onto the outside of the drive shaft.
4. The rotating jet unblocking tool according to claim 1 or 2, characterized in that... The rotary sealing assembly includes a stationary ring, a thrust ring, a rotating ring, a sealing ring, a clamping ring, and an elastic reset element. A connecting inner ring platform is fixedly installed on the inner side of the lower end of the connecting cylinder. A stationary ring is fixedly installed on the inner side of the connecting inner ring platform. A thrust ring is fitted on the inner side of the lower end of the stationary ring. A rotating ring is provided at the lower end of the thrust ring. The lower end of the rotating ring is fixedly installed together with the upper end of the connecting disc. A clamping step surface is provided on the inner side of the rotating ring. An installation ring groove is provided at the lower end of the thrust ring. A sealing ring and a clamping ring are arranged sequentially from top to bottom in the installation ring groove. An elastic reset element is provided between the clamping ring and the clamping step surface.
5. The rotating jet unblocking tool according to claim 3, characterized in that... The rotary sealing assembly includes a stationary ring, a thrust ring, a rotating ring, a sealing ring, a clamping ring, and an elastic reset element. A connecting inner ring platform is fixedly installed on the inner side of the lower end of the connecting cylinder. A stationary ring is fixedly installed on the inner side of the connecting inner ring platform. A thrust ring is fitted on the inner side of the lower end of the stationary ring. A rotating ring is provided at the lower end of the thrust ring. The lower end of the rotating ring is fixedly installed together with the upper end of the connecting disc. A clamping step surface is provided on the inner side of the rotating ring. An installation ring groove is provided at the lower end of the thrust ring. A sealing ring and a clamping ring are arranged sequentially from top to bottom in the installation ring groove. An elastic reset element is provided between the clamping ring and the clamping step surface.
6. The rotating jet unblocking tool according to claim 4, characterized in that... The elastic reset component includes several compression springs. Several upward-opening limiting grooves are distributed circumferentially on the pressing step surface. Each limiting groove is equipped with a compression spring whose upper end is fixedly connected to the lower side of the pressing ring. A sealing ring is fitted in the mounting ring groove corresponding to the outer position of the pressing ring. The lower end of the sealing ring is fixedly installed together with the upper end of the moving ring.
7. The rotating jet unblocking tool according to claim 1, characterized in that... The elastic reset component includes several compression springs. Several upward-opening limiting grooves are distributed circumferentially on the pressing step surface. Each limiting groove is equipped with a compression spring whose upper end is fixedly connected to the lower side of the pressing ring. A sealing ring is fitted in the mounting ring groove corresponding to the outer position of the pressing ring. The lower end of the sealing ring is fixedly installed together with the upper end of the moving ring.
8. The rotary jet unblocking tool according to claim 1, 2, 5, 6, or 7, characterized in that... The lower end of the rotating housing protrudes outward to form a spherical crown-shaped guide portion. The second and third injection holes are spaced apart on the lower outer side of the guide portion. Corresponding to the position above the guide portion, the lower outer side of the rotating housing has two radially penetrating first injection holes spaced apart along the circumference.
9. The rotating jet unblocking tool according to claim 3, characterized in that... The lower end of the rotating housing protrudes outward to form a spherical crown-shaped guide portion. The second and third injection holes are spaced apart on the lower outer side of the guide portion. Corresponding to the position above the guide portion, the lower outer side of the rotating housing has two radially penetrating first injection holes spaced apart along the circumference.
10. The rotating jet unblocking tool according to claim 4, characterized in that... The lower end of the rotating housing protrudes outward to form a spherical crown-shaped guide portion. The second and third injection holes are spaced apart on the lower outer side of the guide portion. Corresponding to the position above the guide portion, the lower outer side of the rotating housing has two radially penetrating first injection holes spaced apart along the circumference.