Underground high-power generator

Abstract

The invention relates to the technical field of generators, in particular to an underground high-power generator which comprises an upper connector, the outer surface of the upper connector is fixedly sleeved with a guide wheel, the rear end of the guide wheel is fixedly connected with an impeller, and the rear end of the upper connector is rotationally connected with a turbine supporting seat assembly. The rear end of the turbine supporting seat assembly is fixedly connected with a lower connector, the rear end of the lower connector is fixedly connected with a butt-joint pressure-bearing cylinder, the rear end of the butt-joint pressure-bearing cylinder is fixedly connected with a driving pressure-bearing cylinder, a power supply assembly is fixedly arranged on the inner side of the butt-joint pressure-bearing cylinder, and the outer surface of the driving pressure-bearing cylinder is sleeved with a stirring mechanism. According to the power generation device, kinetic energy in the drilling process can be recycled and converted into direct current needed by underground equipment, and the problem that in the drilling process, large friction is generated between slurry blocks on the inner wall and the surface, and then a power source assembly is overheated can be effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and in particular to a high-power downhole generator. Background Art

[0002] With the rapid development of the technology of wireless logging-while-drilling (LWD) tools, their functions have been increasingly enhanced, and the sensors and control actuators used have also been continuously increasing. In practical applications, it is usually necessary to provide power support for downhole electronic measurement assemblies and the steering control modules in rotary steerable systems. One of the traditional power supply methods is to use high-temperature-resistant lithium batteries. However, this method has many limitations, such as poor high-temperature resistance, low output power, short service life, and potential safety hazards such as explosion caused by improper operation. Another common power supply method is to use a mud generator, in which the turbine is driven by the downhole circulating mud to drive the generator rotor to rotate and generate electricity. In theory, this power supply method can achieve an infinite working time. However, the power of the mud generators produced in China is generally about 60 watts at present; moreover, the downhole space is narrow, and the high-temperature and high-pressure environment is harsh. The pure imported generators from abroad are expensive, with high maintenance costs, long maintenance cycles, and high costs for replacement parts. In addition, during the process of drilling in, there is a large frictional force between the inner wall of the well and the pressure-bearing cylinder on the outer surface of the lithium battery, resulting in heat generation problems, which further affect the normal operation. Summary of the Invention

[0003] The purpose of the present invention is to solve the disadvantages existing in the background art, and to propose a high-power downhole generator.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a high-power downhole generator, including an upper joint, a guide wheel is fixedly sleeved on the outer surface of the upper joint, an impeller is fixedly connected to the rear end of the guide wheel, a turbine support seat assembly is rotatably connected to the rear end of the upper joint, a lower joint is fixedly connected to the rear end of the turbine support seat assembly, a docking pressure-bearing cylinder is fixedly connected to the rear end of the lower joint, a driving pressure-bearing cylinder is fixedly connected to the rear end of the docking pressure-bearing cylinder, a power supply assembly is fixedly arranged inside the docking pressure-bearing cylinder, a stirring mechanism is sleeved on the outer surface of the driving pressure-bearing cylinder, and a power generation mechanism is arranged inside the turbine support seat assembly.

[0005] Preferably, a turbine support shaft is fixedly connected to the rear end of the upper joint, the turbine support shaft is rotatably inserted into the front end of the turbine support seat assembly, an inner ring of an upper TC bearing is fixedly sleeved on the outer surface of the turbine support shaft, an outer ring of the upper TC bearing is rotatably sleeved on the outer surface of the inner ring of the upper TC bearing, a wear-resistant ring is rotatably connected to the rear end of the upper joint, and the wear-resistant ring is slidably sleeved on the outer surface of the turbine support shaft, the rear end of the wear-resistant ring is in sliding contact with the front end of the outer ring of the upper TC bearing, and the outer ring of the upper TC bearing is fixedly connected to the front end of the inner wall of the turbine support seat assembly.

[0006] Preferably, the power generation mechanism includes a coil assembly fixedly installed inside the docking pressure-bearing cylinder. A generator assembly is rotatably fitted inside the coil assembly. The front end of the generator assembly is fixedly connected to the rear end of the turbine support shaft. A wire passing tube is fixedly penetrated inside the turbine support shaft. The front end of the wire passing tube is fixed to the turbine support shaft through a wire passing tube fixing seat.

[0007] Preferably, an inner ring of a lower TC bearing is fixedly sleeved on the outer surface of the rear end of the turbine support shaft 10. An outer ring of the lower TC bearing is rotatably sleeved outside the inner ring of the lower TC bearing. The outer ring of the lower TC bearing is fixedly connected to the inner wall of the turbine support seat assembly.

[0008] Preferably, a lower bearing seat is fixedly connected to the inner wall of the rear end of the docking pressure-bearing cylinder. A lower bearing is rotatably fitted inside the lower bearing seat. The rear end of the generator assembly is fixedly connected to the inside of the lower bearing. A cable cover is fixedly connected to the rear end of the coil assembly. An upper bearing seat is fixedly connected to the inner wall of the front end of the docking pressure-bearing cylinder. A pressure ring is provided between the docking pressure-bearing cylinder and the upper bearing seat. An upper bearing is rotatably fitted inside the upper bearing seat. The front end of the generator assembly is fixedly connected to the inside of the upper bearing.

[0009] Preferably, the rear end of the lower joint slides into the driving pressure-bearing cylinder and a shock absorber is provided at the end. The rear end of the shock absorber is fixedly connected to the power supply assembly. A swelling ring is fixedly connected to the rear end of the power supply assembly. A plug is fixedly connected to the rear end of the swelling ring. The plug is fixedly connected to the inner rear end of the driving pressure-bearing cylinder.

[0010] Preferably, the stirring mechanism includes a pushing sleeve fixedly sleeved on the outer surface of the driving pressure-bearing cylinder. A pushing surface is provided at the front end of the pushing sleeve. A ferrule is rotatably sleeved on the outer surface of the driving pressure-bearing cylinder through a driving mechanism. A sharpened edge is provided at the front end of the ferrule. A plurality of connecting plates arranged in an annular array are fixedly connected to the outer surface of the ferrule. A ring cutter is fixedly sleeved at the ends of the plurality of connecting plates. A cutting edge is fixedly connected to the front end of the ring cutter. A connecting ring is fixedly connected to the rear end of the ring cutter. A plurality of rotating teeth arranged in an annular array are fixedly connected to the inner wall of the connecting ring. A plurality of fixed teeth arranged in an annular array are fixedly connected to the outer surface of the driving pressure-bearing cylinder. The fixed teeth are located inside the connecting ring.

[0011] Preferably, a plurality of stabilizing rods are fixedly connected to the front surface of the pushing sleeve. The front ends of the stabilizing rods are in contact with the rear end of the connecting ring.

[0012] Preferably, the driving mechanism includes a mounting seat fixedly installed on the inner wall of the driving pressure-bearing cylinder. A motor is fixedly installed on the rear surface of the mounting seat. The output shaft of the motor is fixedly connected to a transmission shaft, and the transmission shaft rotatably penetrates the inside of the mounting seat. The front end of the transmission shaft is fixedly connected to a transmission gear. A clamping groove is formed on the outer surface of the driving pressure-bearing cylinder. A clamping edge is provided on the rear surface of the collar. The clamping edge is rotatably clamped inside the clamping groove. A toothed ring is provided on the inner surface of the collar. The toothed ring is located inside the clamping groove. A through opening is formed on the inner surface of the clamping groove. The upper side of the transmission gear passes through the through opening and meshes with the toothed ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. During the drilling process of the present invention, when the mud flows through the guide wheel and reaches the impeller, the kinetic energy and pressure energy of the mud push the impeller to rotate, driving the turbine support seat assembly to rotate. The turbine support seat assembly drives the upper magnet of the generator assembly to rotate, thereby driving the entire generator assembly to rotate. When the generator assembly rotates, the magnetic field cuts the coil assembly. According to Faraday's law of electromagnetic induction, an electric current is generated in the coil assembly. After being regulated, rectified by the power supply assembly, it is converted into direct current required by downhole equipment and stored in the battery to meet the long-term stable power supply for downhole instruments.

[0014] 2. During the movement of the impeller, due to the guiding effect of the curved surface on the surface, the impeller rotates, forming spiral strip protrusions on the inner wall of the well. During the driving of the motor, the transmission gear makes the toothed ring rotate, and then the ring knife rotates. The cutting edge of the ring knife cuts the spiral protrusions, allowing them to enter between the ring knife and the collar. At the same time, the connecting ring rotates, driving the rotating teeth to rotate. The rotating teeth move relative to the fixed teeth to crush the pulp blocks. As the drilling progresses, the crushed pulp blocks reach the outer surface of the extrusion sleeve through the extrusion surface. Under the extrusion of the extrusion sleeve, the crushed pulp blocks are extruded against the inner wall of the well, which can effectively prevent the pulp blocks on the inner wall from generating excessive friction with the surface during the drilling process, thereby avoiding the problem of overheating of the power supply assembly. Description of the Drawings

[0015] Figure 1 It is a cross-sectional view of a downhole high-power generator of the present invention; Figure 2 It is a cross-sectional view of the turbine support seat assembly of a downhole high-power generator of the present invention; Figure 3 It is a cross-sectional view of the driving pressure-bearing cylinder of a downhole high-power generator of the present invention; Figure 4 It is a cross-sectional view of the extrusion sleeve of a downhole high-power generator of the present invention; Figure 5 It is a Figure 4 magnified view of part A in the present invention; Figure 6 Schematic diagram of the clamping groove of a high-power downhole generator according to the present invention; Figure 7 Schematic diagram of the drive mechanism of a high-power downhole generator according to the present invention; Figure 8 Schematic diagram of the connection ring of a high-power downhole generator according to the present invention.

[0016] Wherein: 1. Upper joint; 2. Guide wheel; 3. Impeller; 4. Wear-resistant ring; 5. Outer ring of upper TC bearing; 6. Inner ring of upper TC bearing; 7. Fixed seat of wire pipe; 8. Wire pipe; 9. Turbine support seat assembly; 10. Turbine support shaft; 11. Outer ring of lower TC bearing; 12. Inner ring of lower TC bearing; 14. Generator assembly; 15. Pressure ring; 16. Upper bearing seat; 17. Upper bearing; 18. Docking pressure-bearing cylinder; 19. Coil assembly; 20. Lower bearing seat; 21. Lower bearing; 22. Cable cover; 23. Lower joint; 24. Shock absorber; 25. Drive pressure-bearing cylinder; 26. Power supply assembly; 27. Expansion ring; 28. Plug; 29. Pushing sleeve; 30. Pushing surface; 31. Stabilizing rod; 32. Connection ring; 33. Fixed tooth; 34. Rotating tooth; 35. Ring knife; 36. Knife edge; 37. Connection plate; 38. Ring; 39. Sharpened edge; 40. Clamping edge; 41. Clamping groove; 42. Through hole; 43. Transmission gear; 44. Gear ring; 45. Transmission shaft; 46. Mounting seat; 47. Motor. Detailed implementation manners

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0018] As Figures 1-8 shown, a high-power downhole generator includes an upper joint 1. A guide wheel 2 is fixedly sleeved on the outer surface of the upper joint 1. The rear end of the guide wheel 2 is fixedly connected with an impeller 3. The rear end of the upper joint 1 is rotatably connected with a turbine support seat assembly 9. The rear end of the turbine support seat assembly 9 is fixedly connected with a lower joint 23. The rear end of the lower joint 23 is fixedly connected with a docking pressure-bearing cylinder 18. The rear end of the docking pressure-bearing cylinder 18 is fixedly connected with a drive pressure-bearing cylinder 25. A power supply assembly 26 is fixedly arranged inside the docking pressure-bearing cylinder 18. A stirring mechanism is sleeved on the outer surface of the drive pressure-bearing cylinder 25. A power generation mechanism is arranged inside the turbine support seat assembly 9.

[0019] As Figure 1 、 Figure 2As shown in the figure, a turbine support shaft 10 is fixedly connected to the rear end of the upper joint 1. The turbine support shaft 10 is rotatably inserted into the front end of the turbine support seat assembly 9. An upper TC bearing inner ring 6 is fixedly sleeved on the outer surface of the turbine support shaft 10. An upper TC bearing outer ring 5 is rotatably sleeved on the outer surface of the upper TC bearing inner ring 6. The rear end of the upper joint 1 is rotatably connected to a wear-resistant ring 4, and the wear-resistant ring 4 is slidably sleeved on the outer surface of the turbine support shaft 10. The rear end of the wear-resistant ring 4 is in sliding contact with the front end of the upper TC bearing outer ring 5. The upper TC bearing outer ring 5 is fixedly connected to the front end of the inner wall of the turbine support seat assembly 9. The setting of the upper TC bearing outer ring 5 and the upper TC bearing inner ring 6 is a common rotational connection technology and will not be elaborated here too much, ensuring that the turbine support shaft 10 can rotate relative to the turbine support seat assembly 9.

[0020] The power generation mechanism includes a coil assembly 19 fixedly installed inside the docking pressure cylinder 18. A generator assembly 14 is rotatably embedded inside the coil assembly 19. The front end of the generator assembly 14 is fixedly connected to the rear end of the turbine support shaft 10. A wire passing tube 8 is fixedly penetrated through the inside of the turbine support shaft 10. The front end of the wire passing tube 8 is fixed to the turbine support shaft 10 through a wire passing tube fixing seat 7. When the generator assembly 14 rotates, it cuts the magnetic induction lines generated by the coil assembly 19 to generate electricity. The wire passing tube 8 facilitates the connection of cables to transmit the electric energy during the power generation process to the power supply assembly 26.

[0021] The following is the way of rotational cooperation between the rear end of the turbine support shaft 10 and the turbine support seat assembly 9: A lower TC bearing inner ring 12 is fixedly sleeved on the outer surface of the rear end of the turbine support shaft 10. A lower TC bearing outer ring 11 is rotatably sleeved outside the lower TC bearing inner ring 12. The lower TC bearing outer ring 11 is fixedly connected to the inner wall of the turbine support seat assembly 9.

[0022] A lower bearing seat 20 is fixedly connected to the rear end of the inner wall of the docking pressure cylinder 18. A lower bearing 21 is rotatably embedded inside the lower bearing seat 20. The rear end of the generator assembly 14 is fixedly connected to the inside of the lower bearing 21. A cable cover 22 is fixedly connected to the rear end of the coil assembly 19, which plays a role in protecting the cables passing through the inside. An upper bearing seat 16 is fixedly connected to the front end of the inner wall of the docking pressure cylinder 18, and a pressure ring 15 is arranged between the docking pressure cylinder 18 and the upper bearing seat 16. An upper bearing 17 is rotatably embedded inside the upper bearing seat 16. The front end of the generator assembly 14 is fixedly connected to the inside of the upper bearing 17. Ensure that the front end of the generator assembly 14 can be rotatably connected to the docking pressure cylinder 18.

[0023] As Figure 2 、 Figure 3As shown, the rear end of the lower joint 23 is slidably inserted into the driving pressure-bearing cylinder 25 and a shock absorber 24 is provided at the end. The rear end of the shock absorber 24 is fixedly connected to the power supply assembly 26. The shock absorber 24 plays a buffering role to reduce the kinetic energy transmitted to the power supply assembly 26. The rear end of the power supply assembly 26 is fixedly connected with an expansion ring 27, the rear end of the expansion ring 27 is fixedly connected with a plug 28, and the plug 28 is fixedly connected to the inner rear end of the driving pressure-bearing cylinder 25. The plug 28 and the expansion ring 27 improve the installation stability of the power supply assembly 26.

[0024] As Figure 6 , Figure 7 , Figure 8 shown, the stirring mechanism includes a pushing sleeve 29 fixedly sleeved on the outer surface of the driving pressure-bearing cylinder 25. The front end of the pushing sleeve 29 is provided with a pushing surface 30. The outer surface of the driving pressure-bearing cylinder 25 is rotatably sleeved with a collar 38 through a driving mechanism. The front end of the collar 38 is provided with a sharpened edge 39. The setting of the sharpened edge 39 can prevent the blockage of the pulp block. The outer surface of the collar 38 is fixedly connected with a plurality of connecting plates 37 arranged in an annular array. The ends of the plurality of connecting plates 37 are fixedly sleeved with a ring cutter 35 through a fixing member. The front end of the ring cutter 35 is fixedly connected with a cutting edge 36. The rear end of the ring cutter 35 is fixedly connected with a connecting ring 32. The inner wall of the connecting ring 32 is fixedly connected with a plurality of rotating teeth 34 arranged in an annular array. The outer surface of the driving pressure-bearing cylinder 25 is fixedly connected with a plurality of fixed teeth 33 arranged in an annular array, and the fixed teeth 33 are located inside the connecting ring 32. The rotating teeth 34 and the fixed teeth 33 are staggered to crush the passing pulp blocks.

[0025] As Figure 8 shown, the front surface of the pushing sleeve 29 is fixedly connected with a plurality of stabilizing rods 31. The front ends of the stabilizing rods 31 are in contact with the rear end of the connecting ring 32. The stabilizing rods 31 are used to improve the stability of the connecting ring 32 during rotation.

[0026] As Figure 4 , Figure 5 , Figure 7As shown in the figure, the drive mechanism includes a mounting seat 46 fixedly installed on the inner wall of the drive pressure-bearing cylinder 25. A motor 47 is fixedly installed on the rear surface of the mounting seat 46. The output shaft of the motor 47 is fixedly connected to a transmission shaft 45, and the transmission shaft 45 rotates through the inside of the mounting seat 46. The front end of the transmission shaft 45 is fixedly connected to a transmission gear 43. A clamping groove 41 is formed on the outer surface of the drive pressure-bearing cylinder 25. A clamping edge 40 is provided on the rear surface of the collar 38, and the clamping edge 40 is rotatably clamped inside the clamping groove 41. The clamping edge 40 enables the collar 38 to rotate relative to the clamping groove 41 while preventing disengagement. A gear ring 44 is provided on the inner surface of the collar 38, and the gear ring 44 is located inside the clamping groove 41. A through opening 42 is formed on the inner surface of the clamping groove 41. The upper part of the transmission gear 43 passes through the through opening 42 and meshes with the gear ring 44. When the motor 47 rotates, the transmission shaft 45 drives the transmission gear 43 to rotate, thereby causing the gear ring 44 to rotate and the collar 38 to rotate.

[0027] During the drilling process, when the mud flows through the guide wheel 2 and reaches the impeller 3, the kinetic energy and pressure energy of the mud push the impeller 3 to rotate, driving the turbine support seat assembly 9 to rotate. The turbine support seat assembly 9 drives the upper magnet of the generator assembly 14 to rotate, thereby driving the entire generator assembly 14 to rotate. When the generator assembly 14 rotates, the magnetic field cuts the coil assembly 19. According to Faraday's law of electromagnetic induction, an electric current is generated in the coil assembly 19, which is regulated and rectified by the power supply assembly 26 and converted into direct current required by the downhole equipment, and the electric energy is stored in the battery to meet the long-term stable power supply for downhole instruments.

[0028] During the movement of the impeller 3, due to the guiding action of the curved surface on the surface, the impeller 3 rotates, forming spiral strip protrusions on the inner wall of the well. During the drive of the motor 47, the transmission gear 43 causes the gear ring 44 to rotate, thereby causing the ring cutter 35 to rotate. The cutting edge 36 cuts the spiral protrusions and allows them to enter between the ring cutter 35 and the collar 38. At the same time, the connecting ring 32 rotates, driving the rotating gear 34 to rotate. The rotating gear 34 moves relative to the fixed gears 33 to crush the pulp blocks. As the drilling progresses, the crushed pulp blocks reach the outer surface of the extrusion sleeve 29 through the extrusion surface 30. Under the extrusion of the extrusion sleeve 29, the crushed pulp blocks are extruded against the inner wall of the well, which can effectively prevent large friction between the pulp blocks on the inner wall and the surface during the drilling process, thereby avoiding overheating problems at the location of the power supply assembly 26.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A downhole high-power generator, comprising an upper joint (1), characterized in that: A guide wheel (2) is fixedly sleeved on the outer surface of the upper joint (1). An impeller (3) is fixedly connected to the rear end of the guide wheel (2). A turbine support seat assembly (9) is rotatably connected to the rear end of the upper joint (1). A lower joint (23) is fixedly connected to the rear end of the turbine support seat assembly (9). A docking pressure-bearing cylinder (18) is fixedly connected to the rear end of the lower joint (23). A driving pressure-bearing cylinder (25) is fixedly connected to the rear end of the docking pressure-bearing cylinder (18). A power supply assembly (26) is fixedly arranged inside the docking pressure-bearing cylinder (18). An agitating mechanism is sleeved on the outer surface of the driving pressure-bearing cylinder (25). A power generation mechanism is arranged inside the turbine support seat assembly (9).

2. The downhole high-power generator according to claim 1, wherein: A turbine support shaft (10) is fixedly connected to the rear end of the upper joint (1). The turbine support shaft (10) is rotatably inserted into the front end of the turbine support seat assembly (9). An upper TC bearing inner ring (6) is fixedly sleeved on the outer surface of the turbine support shaft (10). An upper TC bearing outer ring (5) is rotatably sleeved on the outer surface of the upper TC bearing inner ring (6). A wear-resistant ring (4) is rotatably connected to the rear end of the upper joint (1), and the wear-resistant ring (4) is slidably sleeved on the outer surface of the turbine support shaft (10). The rear end of the wear-resistant ring (4) is in sliding contact with the front end of the upper TC bearing outer ring (5). The upper TC bearing outer ring (5) is fixedly connected to the front end of the inner wall of the turbine support seat assembly (9).

3. The downhole high-power generator according to claim 1, characterized in that: The power generation mechanism includes a coil assembly (19) fixedly installed inside the docking pressure-bearing cylinder (18). A generator assembly (14) is rotatably embedded inside the coil assembly (19). The front end of the generator assembly (14) is fixedly connected to the rear end of the turbine support shaft (10). A wire passing tube (8) is fixedly penetrated through the inside of the turbine support shaft (10). The front end of the wire passing tube (8) is fixed to the turbine support shaft (10) through a wire passing tube fixing seat (7).

4. The downhole high-power generator according to claim 1, characterized in that: A lower TC bearing inner ring (12) is fixedly sleeved on the outer surface of the rear end of the turbine support shaft 10. A lower TC bearing outer ring (11) is rotatably sleeved on the outside of the lower TC bearing inner ring (12). The lower TC bearing outer ring (11) is fixedly connected to the inner wall of the turbine support seat assembly (9).

5. The downhole high-power generator according to claim 3, characterized in that: A lower bearing seat (20) is fixedly connected to the rear end of the inner wall of the docking pressure-bearing cylinder (18). A lower bearing (21) is rotatably embedded inside the lower bearing seat (20). The rear end of the generator assembly (14) is fixedly connected to the inside of the lower bearing (21). A cable cover (22) is fixedly connected to the rear end of the coil assembly (19). An upper bearing seat (16) is fixedly connected to the front end of the inner wall of the docking pressure-bearing cylinder (18), and a pressure ring (15) is arranged between the docking pressure-bearing cylinder (18) and the upper bearing seat (16). An upper bearing (17) is rotatably embedded inside the upper bearing seat (16). The front end of the generator assembly (14) is fixedly connected to the inside of the upper bearing (17).

6. A high-power downhole generator according to claim 1, characterized in that: The rear end of the lower joint (23) is slidably inserted into the driving pressure-bearing cylinder (25) and a shock absorber (24) is provided at the end. The rear end of the shock absorber (24) is fixedly connected to the power supply assembly (26). The rear end of the power supply assembly (26) is fixedly connected with an expansion ring (27). The rear end of the expansion ring (27) is fixedly connected with a plug (28), and the plug (28) is fixedly connected to the inner rear end of the driving pressure-bearing cylinder (25).

7. The downhole high-power generator according to claim 1, wherein: The stirring mechanism includes a pushing sleeve (29) fixedly sleeved on the outer surface of the driving pressure-bearing cylinder (25). A pushing surface (30) is provided at the front end of the pushing sleeve (29). A collar (38) is rotatably sleeved on the outer surface of the driving pressure-bearing cylinder (25) through a driving mechanism. A sharpened edge (39) is provided at the front end of the collar (38). A plurality of connecting plates (37) arranged in an annular array are fixedly connected to the outer surface of the collar (38). The ends of the plurality of connecting plates (37) are fixedly sleeved with a ring cutter (35) through a fixing means. A cutting edge (36) is fixedly connected to the front end of the ring cutter (35). The rear end of the ring cutter (35) is fixedly connected with a connecting ring (32). A plurality of rotating teeth (34) arranged in an annular array are fixedly connected to the inner wall of the connecting ring (32). A plurality of fixed teeth (33) arranged in an annular array are fixedly connected to the outer surface of the driving pressure-bearing cylinder (25), and the fixed teeth (33) are located inside the connecting ring (32).

8. The downhole high-power generator according to claim 7, wherein: A plurality of stabilizing rods (31) are fixedly connected to the front surface of the pushing sleeve (29), and the front ends of the stabilizing rods (31) are in contact with the rear end of the connecting ring (32).

9. The downhole high-power generator according to claim 7, characterized in that: The driving mechanism includes a mounting seat (46) fixedly installed on the inner wall of the driving pressure-bearing cylinder (25). A motor (47) is fixedly installed on the rear surface of the mounting seat (46). The output shaft of the motor (47) is fixedly connected with a transmission shaft (45), and the transmission shaft (45) rotatably penetrates through the inside of the mounting seat (46). A transmission gear (43) is fixedly connected to the front end of the transmission shaft (45). A clamping groove (41) is provided on the outer surface of the driving pressure-bearing cylinder (25). A clamping edge (40) is provided on the rear surface of the collar (38), and the clamping edge (40) is rotatably clamped inside the clamping groove (41). A toothed ring (44) is provided on the inner surface of the collar (38), and the toothed ring (44) is located inside the clamping groove (41). An opening (42) is provided on the inner surface of the clamping groove (41), and the upper part of the transmission gear (43) passes through the opening (42) and meshes with the toothed ring (44).

Images