CN108104715A - Torsion impact device based on turbine and gear - Google Patents

Abstract

The invention provides a torsion impactor based on a turbine and a gear, which solves the phenomenon of stick-slip vibration generated by a drill bit during drilling. Its technical solution is: it is composed of a turbine assembly, a conversion joint and an impact assembly. The turbine assembly generates high-speed rotational motion under the impact of drilling fluid, and then drives the flange drive shaft to rotate; on the one hand, the flange drive shaft passes through the drive shaft , The transmission pin drives the eccentric impact hammer to rotate at high speed; on the other hand, it drives the external gear to rotate, meshes with the internal gear housing, and transmits a lower speed to the internal gear housing, and then drives the impact transmission shaft to rotate at a lower speed ; Thereby forming a rotational speed difference with the eccentric impact block, resulting in an impact, and transmitting the torsional vibration generated by the impact to the lower joint through the impact drive shaft. The invention can continuously generate torsional impact vibration, improve the rock-breaking efficiency of the drill bit, and effectively avoid the phenomena of drill sticking and stick-slip.

Description

Torsion Impactor Based on Turbine and Gear

technical field

The invention relates to a torsion impactor based on a turbine and a gear used in the fields of petroleum and natural gas shale gas drilling, mining, geological drilling and the like.

Background technique

In recent years, with the country's increasing demand for oil and natural gas, the exploitation of shale gas is also a hot spot and a challenge. Because during the drilling process, due to the driller’s technical and experience problems, the driller’s technical and experience problems often cause the drill to be sent too late or too fast, or because of the friction of the well wall, the drilling pressure applied to the drill bit is unstable, which affects the rock breaking efficiency. It is even possible to damage the drill bit, crack the cutting teeth of the drill bit, etc. due to the sudden increase of the drilling pressure, which will affect the drilling speed. On the other hand, when the PDC drill bit is drilling hard or abrasive formations, it usually does not have enough torque to break the rock, resulting in the phenomenon of pipe sticking, and the torque release of the downhole drill pipe causes the drill bit to fail. The rock in the deep formation of the oil field is hard and the grinding extreme value is high. The conventional roller cone bit is used for drilling. The footage of a single bit is small, and multiple trips are required and the ROP is low. Higher, the life of the screw is low, and the use effect is not ideal; at the same time, stick-slip vibration often occurs in drilling deep and ultra-deep wells. In addition, drilling with gas drilling technology can greatly increase the ROP, but it is easy to cause complex downhole situations when the formation is watery, and there are many supporting equipment for gas drilling, and the cost is relatively high.

In response to the above problems, various tools have been tried at home and abroad, and a certain speed-up effect has been achieved, among which high-frequency torsional impact tools occupy a dominant position in speed-up tools. Both field experiments and theoretical studies have shown that this type of tool can add high-frequency torsional impact force to the drill bit, assist the drill bit in breaking rock, reduce the stick-slip phenomenon of the drill string, increase the ROP, reduce drilling costs, and achieve greater economic benefits , but also to better ensure the safety of drilling.

Contents of the invention

The purpose of the present invention is to provide a torsion impactor based on a turbine and a gear in order to solve the problems of drill bit sticking and stick-slip of the drill string leading to drilling tool failure and low ROP in the drilling process. There are technical flaws in increasing the drilling speed. The tool can effectively protect the drill bit, reduce costs, improve rock breaking efficiency, and increase drilling efficiency.

The technical solution of the present invention is: a torsional impactor based on a turbine and a gear, characterized in that: the torsional impactor based on a turbine and a gear is composed of a turbine assembly, a conversion joint, an impact assembly, and the lower end of the turbine assembly is connected to The conversion joint, the conversion joint is connected with the short joint, and then connected to the impact assembly; the turbine assembly includes a turbine housing, an angular contact ball bearing, an anti-drop ring A, a positioning sleeve A, a turbine stator, a turbine rotor, a transmission key, Positioning sleeve B, rectangular sealing ring, turbine shaft, cylindrical roller bearing, thrust ball bearing, anti-drop ring B, install the turbine rotor, turbine stator and positioning sleeve B on the turbine shaft through the transmission key in turn, and install the anti-drop ring A Installed on the upper part of the turbine shaft, install the two angular contact ball bearings on the turbine housing and the upper part of the turbine shaft in reverse, install the positioning sleeve A and the rectangular sealing ring on the turbine housing in advance, and then fit the turbine stator through spline fit Put it into the turbine casing, install the cylindrical roller bearing, the thrust ball bearing and the limit ring on the front stage of the turbine shaft in sequence from top to bottom, the lower end of the turbine shaft is threaded with the turbine drive shaft; the upper end of the conversion joint is connected with the turbine casing, The lower end is connected with the short joint; the impact assembly produces one-way torsional impact, including the flange drive shaft, screws, external gears, nuts, lower housing, O-ring A, internal gear housing, combined bearing A, flowers Key drive shaft, radial bearing, spline drive block, impact drive shaft, eccentric impact hammer, drive pin A, drive pin B, drive shaft, combination bearing B, combination bearing C, impact outer cylinder, guide bearing group, guide Flow sleeve, O-ring seal B, thrust bearing, O-ring seal C; the upper part of the flange transmission shaft has a threaded hole, which is connected with the lower end of the turbine transmission shaft 15 through threads, and rotates under the drive of the impeller transmission shaft. There are 3 evenly distributed through holes on the lower end surface of the transmission shaft along the circumferential direction. The upper end of the transmission shaft is provided with the same 3 uniformly distributed through holes as the lower end surface of the flange transmission shaft to realize positioning for screws and nuts. The middle part of the transmission shaft There are two sealing ring grooves on the shoulder of the shaft, which provide the installation position for the O-ring A. The lower part of the transmission shaft is milled into a plane in the direction of 180°, and there is a groove for the installation of the transmission pin in the direction of the other 180°; the external gear A through hole is opened in the center along the axial direction, and a sliding bearing is installed and fixed in the through hole, and the screw passes through the sliding bearing in the axial direction, and the external gear is installed between the flange transmission shaft and the transmission shaft, and is fixed by screws and nuts; the internal gear The upper end of the housing has teeth meshing with the external gear, and the middle part of the inner gear housing is provided with a shaft shoulder. There are two fan-shaped flow channels in the direction of 180° inside, and the lower part of the inner gear housing is provided with two opposite Groove; 8 radial through-holes are opened in the circumferential direction of the upper end of the impact outer cylinder to provide a circulation channel for the drilling fluid, which flows from the inside to the flow channel of the inner gear housing. The protruding transmission block is matched with the two grooves in the lower part of the internal gear housing, and the inner spline structure is arranged in the middle and upper part of the impact outer cylinder; the spline transmission shaft is provided with a through hole in the axial direction to match the transmission shaft , the upper end has an external spline structure matched with the impact outer cylinder, and the lower end is also set as an external spline structure; the spline transmission block is internally set There is an inner spline structure matched with the lower end of the spline transmission shaft, and a circumferential step is provided in the outer circumferential direction; the interior of the impact transmission shaft is a chamber structure, and a spline transmission block is provided in the upper circumferential direction. The matching steps, the middle part is provided with a circumferential step as an impact seat, the lower end of the impact transmission shaft is provided with a straight thread, and the lower end surface is provided with an inner hexagonal structure, which is convenient for installation and fixing; the eccentric impact hammer is a hollow structure, which is set in the direction of the outer circumference There is a circumferential step as an impact hammer that is matched with the impact transmission shaft, and a transmission pin groove is arranged inside, and a sliding transmission pin groove is provided in a direction opposite to it at 180°; the O-shaped sealing ring A is installed on the transmission shaft In the groove of the sealing ring, the combined bearing A is installed on the upper middle of the transmission shaft, and the combined bearing B is installed on the lower end of the transmission shaft to realize the axial and radial fixation of the overall structure; the spline drive shaft is sleeved on the drive shaft, and the inside of the spline drive block Cooperate with the spline transmission shaft, and cooperate with the impact transmission shaft externally to realize the transmission of torque; the transmission pin A and transmission pin B are respectively installed in the two transmission pin grooves of the transmission shaft to realize the fixing of the transmission pin, and the eccentric impact hammer is set in the Outside the lower end of the drive shaft, the drive pin A is stuck in the drive pin groove of the drive shaft, and the drive pin B is stuck in the sliding drive pin groove of the drive shaft; the well-coordinated drive shaft, drive pin A, drive pin B, eccentric impact hammer, Combined bearings B are put into the cavity of the impact transmission shaft together to realize installation and fixation; the radial bearing is sleeved on the spline transmission shaft, and fixed by the spline transmission shaft and the middle shoulder of the impact outer cylinder; the combination bearing C is sleeved on the impact transmission shaft The lower end is fixed by the shoulder of the lower end of the impact outer cylinder; the impact outer cylinder is inserted into the inner gear housing; the guide bearing set is set on the lower section of the inner gear housing, positioned by the shoulder of the inner gear housing, and installed inside the lower housing; The upper end of the lower housing is connected with the short joint through threads, and the lower end is connected with the guide sleeve through threads to realize the assembly and fixation of the entire tool; the center of the lower joint is provided with a threaded through hole to realize the connection and fixation with the impact transmission shaft. An axial through hole is opened to provide a flow channel for the drilling fluid; the thrust bearing is installed between the guide bearing group and the lower joint, and the O-ring C is installed between the lower housing and the lower joint. Achieve face sealing.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: there are three screws, external gears and nuts.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: the guide bearing group can withstand radial force and axial force, and the bearing is provided with 12 uniformly distributed axial forces along the circumferential direction. through hole.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: the radial bearings are installed in two sets.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: the combined bearing A, combined bearing B and combined bearing C are all needle roller and thrust combined ball bearings.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: the upper half of the guide sleeve is an outer cone structure.

In the above solution, the torsion impactor based on the turbine and the gear is characterized in that: the O-ring A and the O-ring B are double-seal structures, and the O-ring C is an end face sealing structure.

The beneficial effects of the present invention are: (1) the impulsive action is realized through the turbine and the differential gear, and the working performance is stable and reliable; (2) the problem of being blocked or stuck by the downhole drilling tool during the drilling process is solved; (3) The tool has reasonable design and reliable performance, which can effectively protect the drill bit by producing circumferential impact, eliminate stick-slip and sticking of the drill bit, and increase the ROP; (4) The tool has strong adaptability, not only applicable to deep vertical wells, but also It is used in directional wells and horizontal wells with directional tools; (5) The tool has no dead point in action and provides high-frequency torsional impact; (6) The advantages of simple operation, long life, and good speed-up effect can be effectively improved when used with PDC bits. ROP in deep wells and hard formations.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is the A-A sectional view in Fig. 1 of the present invention.

Fig. 3 is a B-B sectional view in Fig. 1 of the present invention.

Fig. 4 is a C-C sectional view in Fig. 1 of the present invention.

Fig. 5 is a D-D sectional view in Fig. 1 of the present invention.

Fig. 6 is an E-E sectional view in Fig. 1 of the present invention.

Fig. 7 is a sectional view of F-F in Fig. 1 of the present invention.

Fig. 8 is a G-G sectional view in Fig. 1 of the present invention.

Figures 9 to 12 are a cycle process of the impact of the present invention, Figure 9 shows that the eccentric impact hammer and the impact transmission shaft have not collided; Figure 10 shows that the two collision surfaces of the eccentric impact hammer and the impact transmission shaft have just contacted; Figure 11 shows the impact of the eccentric impact hammer and the impact transmission shaft During the shaft collision process; Figure 12 shows that the two collision surfaces of the eccentric impact hammer and the impact transmission shaft have just separated.

In the figure 1. Turbine housing, 2. Angular contact ball bearing, 3. Anti-drop ring A, 4. Positioning sleeve A, 5. Turbine stator, 6. Turbine rotor, 7. Transmission key, 8. Positioning sleeve B, 9 .Rectangular sealing ring, 10. Turbine shaft, 11. Cylindrical roller bearing, 12. Thrust ball bearing, 13. Anti-drop ring B, 14. Conversion joint, 15. Transmission shaft, 16. Short joint, 17. Flange transmission Shaft, 18. Screw, 19. External gear, 20. Nut, 21. Lower housing, 22. O-ring A, 23. Internal gear housing, 24. Combined bearing A, 25. Spline drive shaft, 26 . Radial bearing, 27. Spline transmission block, 28. Impact transmission shaft, 29. Eccentric impact hammer, 30. Transmission pin A, 31. Transmission pin B, 32. Combination bearing B, 33 Combination bearing C, 34. Transmission Shaft, 35. Impact outer cylinder, 36. Guide bearing group, 37. Guide sleeve, 38. Thrust bearing, 39. O-type seal ring B, 40.O-type seal ring C, 41. Lower joint.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

Referring to the accompanying drawings, the torsion impactor based on the turbine and the gear is characterized in that: the torsional impactor based on the turbine and the gear is composed of the turbine assembly, the conversion joint 14, the impact assembly and the lower end of the turbine assembly is connected with the conversion joint 14. The conversion joint 14 is connected with the short joint 16, and then the impact assembly is connected; the turbine assembly includes the turbine housing 1, the angular contact ball bearing 2, the anti-drop ring A3, the positioning sleeve A4, the turbine stator 5, and the turbine rotor 6. Transmission key 7, positioning sleeve B8, rectangular sealing ring 9, turbine shaft 10, cylindrical roller bearing 11, thrust ball bearing 12, anti-drop ring B13, and the turbine rotor 6, turbine stator 5 and positioning sleeve B8 are passed through the transmission in turn The key 7 is installed on the turbine shaft 10, the anti-drop ring A3 is installed on the upper part of the turbine shaft 10, the two angular contact ball bearings 2 are reversely installed on the turbine housing 1 and the upper part of the turbine shaft 10, and the positioning sleeve A4 and The rectangular sealing ring 9 is installed on the turbine casing 1, and then the turbine stator 5 is put into the turbine casing 1 through spline fit, and the cylindrical roller bearing 11, the thrust ball bearing 12 and the limit ring 13 are sequentially installed from top to bottom Installed on the front stage of the turbine shaft 10, the lower end of the turbine shaft 10 is threadedly connected to the turbine transmission shaft 15; the upper end of the conversion joint 14 is connected to the turbine housing 1, and the lower end is connected to the short joint 16; the impact assembly produces a one-way torsional impact, including Flange transmission shaft 17, screw 18, external gear 19, nut 20, lower housing 21, O-ring A22, internal gear housing 23, composite bearing A24, spline transmission shaft 25, radial bearing 26, spline Transmission block 21, impact transmission shaft 28, eccentric impact hammer 29, transmission pin A30, transmission pin B31, transmission shaft 34, combined bearing B32, combined bearing C33, impact outer cylinder 35, guide bearing group 36, guide sleeve 37, O-shaped sealing ring B39, thrust bearing 38, O-shaped sealing ring C40; the upper part of the flange transmission shaft 17 has a threaded hole, which is connected with the lower end of the turbine transmission shaft 15 through threads, and rotates under the drive of the impeller transmission shaft. The lower end surface of the shaft 17 is provided with 3 evenly distributed through holes along the circumferential direction, and the upper end of the transmission shaft 34 is provided with the same 3 uniformly distributed through holes as the lower end surface of the flange transmission shaft to realize positioning for the screws 18 and nuts 20. There are two sealing ring grooves on the shoulder of the transmission shaft 34, which provide the installation position for the O-ring A22. The lower section of the transmission shaft is milled into a plane in the direction of 180°, and there is a groove for the installation of the transmission pin in the direction of the other 180°; The center of the external gear 19 has a through hole along the axial direction, and a sliding bearing is installed and fixed in the through hole. The screw 18 passes through the sliding bearing in the axial direction, and the external gear is installed between the flange transmission shaft 17 and the transmission shaft 34. 18 and the nut 20 are fixed; the upper end of the internal gear housing 23 has teeth meshing with the external gear 19, the middle part of the internal gear housing is provided with a shaft shoulder, and two fan-shaped flow channels are opened in the direction of 180° inside the internal gear housing. The lower part of the body 23 is provided with two opposite grooves in the direction of 180°; the impact outer cylinder 35 is provided with 8 radial through holes in the circumferential direction to provide circulation channels for the drilling fluid, which flows from the inside to the In the flow channel of the inner gear housing 23, two protruding transmission blocks facing each other in the direction of 180° are arranged in the outer circumferential direction of the lower end, which match with the two grooves in the lower part of the inner gear housing 23, and the middle and upper sections of the impact outer cylinder 35 are provided with inner Spline structure; the spline transmission shaft 25 has a through hole matching with the transmission shaft 34 along the axial direction, an external spline structure matching with the impact outer cylinder 35 is opened on the upper end, and the lower end is also set as an external spline structure; the spline transmission block 21 is provided with an internal spline structure matching the lower end of the spline transmission shaft 25, and a circumferential step is provided in the outer circumferential direction; the interior of the impact transmission shaft (28) is a chamber structure , a step that matches the spline transmission block 21 is provided in the circumferential direction of the upper end, a circumferential step as an impact seat is provided in the middle, a straight thread is provided at the lower end of the impact transmission shaft 28, and an inner hexagonal structure is provided on the lower end surface, which is convenient for installation fixed; the eccentric impact hammer 29 is a hollow structure, and is provided with a circumferential step matching with the impact transmission shaft as an impact hammer in the outer circumferential direction, and a drive pin slot is provided inside, and a Sliding drive pin groove; the O-shaped sealing ring A22 is installed in the sealing ring groove of the transmission shaft 34, the combined bearing A24 is installed on the upper middle section of the transmission shaft 34, and the combined bearing B32 is installed on the lower end of the transmission shaft, so as to realize the axial and Radially fixed; the spline transmission shaft 25 is sleeved on the transmission shaft 34, the spline transmission block 21 cooperates with the spline transmission shaft 25 inside, and the outside cooperates with the impact transmission shaft 28 to realize torque transmission; transmission pin A30, transmission pin B31 They are respectively installed in the two transmission pin grooves of the transmission shaft 34 to realize the fixing of the transmission pins. The eccentric impact hammer 29 is set outside the lower end of the transmission shaft 34, the transmission pin A30 is stuck in the transmission pin groove of the transmission shaft 34, and the transmission pin B31 is stuck. In the sliding transmission pin groove of the transmission shaft 34; the well-coordinated transmission shaft 34, transmission pin A30, transmission pin B31, eccentric impact hammer 29, and combined bearing B32 are all loaded into the chamber of the impact transmission shaft 28 to realize installation and fixation; The bearing 26 is sleeved on the spline transmission shaft 25, and fixed by the spline transmission shaft 25 and the shoulder of the middle section of the impact outer cylinder 35; the combined bearing C33 is sleeved on the lower end of the impact transmission shaft 28, and fixed by the impact shoulder of the lower end of the outer cylinder 35; The outer cylinder 35 is inserted into the inner gear housing 23; the guide bearing group 36 is sleeved on the lower part of the inner gear housing 23, positioned by the shaft shoulder of the inner gear housing, and installed inside the lower housing 21 at the same time; the lower housing 21 The upper end is connected with the short joint 16 through threads, and the lower end is connected with the guide sleeve 37 through threads to realize the assembly and fixation of the whole tool; the center of the lower joint 41 has a threaded through hole to realize the connection and fixation with the impact drive shaft, and the end surface has a 6 axial through holes to provide fluid flow channels for drilling fluid; the thrust bearing 38 is installed between the guide bearing group 36 and the lower joint 41, and the O-ring is installed between the lower casing 21 and the lower joint 41 Between, to achieve end face sealing.

The torsion impactor based on the worm gear and the gear is characterized in that there are three screws 18, external gears 19 and nuts 20 in total.

The torsion impactor based on the turbine and the gear is characterized in that: the guide bearing set 36 can withstand radial force and axial force, and the bearing is provided with 12 uniformly distributed axial through holes along the circumferential direction.

The torsion impactor based on the turbine and the gear is characterized in that: the radial bearing 26 is installed in two sets.

The torsion impactor based on the turbine and the gear is characterized in that: the combined bearing A24, the combined bearing B32 and the combined bearing C33 are all needle roller and thrust combined ball bearings.

The torsion impactor based on the turbine and the gear is characterized in that: the upper half of the guide sleeve 37 is an outer cone structure.

The torsion impactor based on the turbine and the gear is characterized in that: the O-ring A22 and the O-ring B39 are double-sealed structures, and the O-ring C40 is an end face sealing structure.

When working, high-pressure drilling fluid flows in from the turbine housing 1, passes through the turbine stator 5, turbine rotor 6, turbine shaft 10, turbine transmission shaft 15, and flows to the flange transmission shaft 17, most of the drilling fluid passes through the flange transmission shaft 17 and the short The annular space between the joint 16 and the lower housing 21 flows through the guide bearing group 36 and then through the guide sleeve 37 to the lower joint; a small part of drilling fluid passes through the annular space between the external gear 19 and the internal gear housing 23, Then flow through the radial through hole at the upper end of the impact outer cylinder 35 to the annular space between the internal gear housing 23 and the impact outer cylinder 35, and flow to the lower joint. When the high-pressure drilling fluid passes through the impeller 4, it drives the impeller to rotate at a high speed, and the impeller 4 drives the turbine transmission shaft 15 to rotate, and then drives the flange transmission shaft 17 to rotate; on the one hand, the flange transmission shaft 17 drives the transmission shaft 34 to rotate, and the transmission shaft passes through the transmission pin A30, the transmission pin B31 drives the eccentric impact hammer 29 to rotate at high speed; on the other hand, the flange transmission shaft 17 drives the external gear 19 to rotate, and the external gear 19 rotates around its own axis through the sliding bearing while revolving around the axis of the flange transmission shaft. Engaging with the internal gear housing 23, a lower speed is transmitted to the internal gear housing 23, and the internal gear housing drives the impactor outer cylinder 29, and then drives the impact transmission shaft through the spline transmission shaft 25 and the spline transmission block 21 28 rotates at a lower rotational speed; thereby forming a rotational speed difference with the eccentric impact block 23 to generate an impact, and transmit the torsional vibration generated by the impact to the lower joint 41 through the impact drive shaft 28 . As shown in Figures 9 to 12, after the collision between the eccentric impact hammer 29 and the impact transmission shaft 28, the eccentric impact hammer 29 moves eccentrically around the transmission pin A30 under the action of inertial force, and the transmission pin B31 slides in the groove, and the two The impact hammer is separated from the impact surface of the impact seat under the interaction, and the eccentric impact hammer 29 and the impact drive shaft 28 continue to rotate in the same direction at different speeds to prepare for the next collision. In this way, the hammer surface of the eccentric impact hammer 29 and the impact seat of the impact transmission shaft 28 will continuously collide in the circumferential direction periodically, thereby forming a high-frequency unidirectional circumferential impact. The rotation and impact generated by the tool are transmitted to the drill bit through the lower joint 41 to provide power for the drill bit and generate high-frequency unidirectional circumferential vibration of the drill bit, thereby effectively protecting the rotor and improving drilling efficiency.

Claims (7)

1. The torsion impactor based on the turbine and the gear, characterized in that: the torsion impactor based on the turbine and the gear is composed of the turbine assembly, the conversion joint (14), the impact assembly and the lower end of the turbine assembly is connected with the conversion joint (14), the conversion joint (14) is connected with the short joint (16), and then the impact assembly is connected; the turbine assembly includes the turbine housing (1), angular contact ball bearing (2), anti-drop ring A ( 3), positioning sleeve A (4), turbine stator (5), turbine rotor (6), transmission key (7), positioning sleeve B (8), rectangular sealing ring (9), turbine shaft (10), cylindrical roller Sub-bearing (11), thrust ball bearing (12), anti-drop ring B (13), install the turbine rotor (6), turbine stator (5) and positioning sleeve B (8) on the turbine On the shaft (10), install the anti-drop ring A (3) on the upper part of the turbine shaft (10), and install the two angular contact ball bearings (2) on the turbine housing (1) and the turbine shaft (10) in reverse In the upper part, install the positioning sleeve A (4) and the rectangular sealing ring (9) on the turbine casing (1) in advance, and then put the turbine stator (5) into the turbine casing (1) through spline fit, and Install the cylindrical roller bearing (11), the thrust ball bearing (12) and the limit ring (13) on the front step of the turbine shaft (10) in turn, and the lower end of the turbine shaft (10) is threaded with the turbine transmission shaft (15) ;The upper end of the conversion joint (14) is connected with the turbine casing (1), and the lower end is connected with the short joint (16); the impact assembly includes the flange transmission shaft (17), the screw (18), the external gear (19), Nut (20), lower housing (21), O-ring A (22), internal gear housing (23), combination bearing A (24), spline drive shaft (25), radial bearing (26) , spline transmission block (27), impact transmission shaft (28), eccentric impact hammer (29), transmission pin A (30), transmission pin B (31), transmission shaft (34), combined bearing B (32), Combined bearing C (33), impact outer cylinder (35), guide bearing group (36), guide sleeve (37), O-ring B (39), thrust bearing (38), O-ring C (40); the upper part of the flange transmission shaft (17) has a threaded hole, which is connected with the lower end of the turbine transmission shaft (15) through threads, and the lower end surface of the flange transmission shaft (17) is provided with 3 evenly distributed through holes along the circumferential direction ; The upper end of the transmission shaft (34) is provided with three evenly distributed through holes that are the same as the lower end surface of the flange transmission shaft, and two sealing ring grooves are opened on the shoulder of the middle part of the transmission shaft (34), and the lower section of the transmission shaft is in the direction of 180° It is milled into a plane, and there is a slot for the transmission pin to be installed in another 180° direction; the center of the external gear (19) has a through hole along the axis direction, and a sliding bearing is installed and fixed in the through hole, and the external gear is installed on the flange Between the transmission shaft (17) and the transmission shaft (34), it is fixed by screws (18) and nuts (20); the upper end of the internal gear housing (23) has teeth meshing with the external gear (19), and the internal gear housing shoulder , there are two fan-shaped flow channels in the direction of 180° inside, and the lower part of the inner gear housing (23) is provided with two opposite grooves in the direction of 180°; the impact outer cylinder (35) has 8 holes in the circumferential direction of the upper end Radial through holes, two protruding transmission blocks facing each other in the direction of 180° are arranged in the outer circumference direction of the lower end, which match with the two grooves in the lower part of the inner gear housing (23), and the middle and upper sections of the impact outer cylinder (35) are provided with Internal spline structure; the spline transmission shaft (25) has a through hole matching with the transmission shaft (34) along the axial direction, and an external spline structure matching with the impact outer cylinder (35) is opened on the upper end, The lower end is also configured as an external spline structure; the spline transmission block (27) is internally provided with an internal spline structure that matches the lower end of the spline transmission shaft (25), and a circumferential step is provided in the outer circumferential direction; The interior of the impact transmission shaft (28) is a chamber structure, and a step that matches the spline transmission block (27) is provided in the circumferential direction of the upper end, and a circumferential step as an impact seat is provided in the middle, and the lower end of the impact transmission shaft (28) It is provided with a straight thread, and the lower end surface is set as an inner hexagonal structure; the eccentric impact hammer (29) is a hollow structure, and a circumferential step matching the impact transmission shaft as an impact hammer is provided in the outer circumferential direction, and a transmission pin is arranged inside The slot is provided with a sliding transmission pin slot in the direction of 180° opposite to it; the O-ring A (22) is installed in the sealing ring groove of the transmission shaft (34), and the combined bearing A (24) is installed in the transmission On the upper middle section of the shaft (34), the combined bearing B (32) is installed at the lower end of the transmission shaft, the spline transmission shaft (25) is sleeved on the transmission shaft (34), and the inside of the spline transmission block (27) is connected with the spline transmission shaft (25 ), and the outside is matched with the impact transmission shaft (28); the transmission pin A (30) and the transmission pin B (31) are respectively installed in the two transmission pin slots of the transmission shaft (34), and the eccentric impact hammer (29) is set on the Outside the lower end of the transmission shaft (34), the transmission pin A (30) is stuck in the transmission pin groove of the transmission shaft (34), and the transmission pin B (31) is stuck in the sliding transmission pin groove of the transmission shaft (34); Drive shaft (34), drive pin A (30), drive pin B (31), eccentric impact hammer (29), combined bearing B (32) are loaded into the impact drive shaft (28) chamber together; radial bearing (26 ) is set on the spline transmission shaft (25), and fixed by the middle section shoulder of the spline transmission shaft (25) and the impact outer cylinder (35); the combined bearing C (33) is set on the lower end of the impact transmission shaft (28), through The shaft shoulder at the lower end of the impact outer cylinder (35) is fixed; the impact outer cylinder (35) is inserted into the inner gear housing (23); the guide bearing group (36) is sleeved on the lower section of the inner gear housing (23), and the inner gear The shaft shoulder of the shell is positioned and installed inside the lower shell (21); the upper end of the lower shell (21) is connected to the short joint (16) through threads, and the lower end is connected to the diversion sleeve (37) through threads; the lower The center of the joint (41) has a threaded through hole, and the end face has 6 axial through holes; the thrust bearing (38) is installed on the guide bearing group (36) and Between the lower joint (41), the O-ring is installed between the lower housing (21) and the lower joint (41). 2. The torsion impactor based on worm gear and gear according to claim 1, characterized in that there are three screws (18), external gears (19) and nuts (20). 3. The torsion impactor based on turbine and gear according to claim 1, characterized in that: the guide bearing group (36) can withstand radial force and axial force, and there are 12 bearings arranged along the circumferential direction Uniformly distributed axial through holes. 4. The torsion impactor based on the turbine and the gear according to claim 1, characterized in that: two radial bearings (26) are installed as a set. 5. The torsion impactor based on worm gear and gear according to claim 1, characterized in that: the combined bearing A (24), combined bearing B (32) and combined bearing C (33) are needle roller and thrust Combined ball bearings. 6. The torsion impactor based on the turbine and the gear according to claim 1, characterized in that: the upper half of the guide sleeve (37) is an outer cone structure. 7. The torsion impactor based on turbine and gear according to claim 1, characterized in that: the O-ring A (22) and the O-ring B (39) are double-seal structures, and the O-ring Ring C (40) is an end face sealing structure.