Embedded type double-layer ball centralizer and embedded groove machining method thereof

Abstract

The invention discloses a machining method of an inlaid double-layer ball centralizer inlaying groove, the machining method is applied to machining equipment of the centralizer inlaying groove, the machining equipment comprises a bottom bracket, a fixing shell is fixedly installed at the top of the bottom bracket, and a fixing platform is fixedly connected to the top of the fixing shell. The V-shaped plate is operated through the driving assembly to be fixed, the second threaded rod is operated through the second motor to drive the cantilever beam plate, the movable frame, the rotation driving assembly, the drilling machine and the propelling assembly to move up and down, the propelling assembly operates the drilling machine in the working state to move to conduct punching and hole repairing on the centralizer shell, and the operation direction of the drilling machine can be adjusted through the rotation driving assembly; the manufacturing can be completed without moving the centralizer shell, the centralizer shell is taken down, the ball is plugged on the inlaying hole body, then the limiting inner supporting ring is arranged in an inner cavity of the centralizer shell, and the ball can be installed on the inner side of the inlaying hole body and then fastened through the long screw.

Description

Technical Field

[0001] The invention belongs to the technical field of centralizers, and in particular relates to an inlaid double-layer ball centralizer and an inlaid groove processing method thereof. Background Art

[0002] The centralizer can straighten the sucker rod, reduce the contact between the pipe and the rod, and avoid the mutual wear between the pumping pipe and the oil pipe; the uniform wear of the centralizer replaces the eccentric wear of the pipe and the rod, avoiding pitting corrosion that causes oil pipe leakage; the centralizer can reduce the vibration load of the sucker rod in the wellbore, weaken the bending of the sucker rod, improve the eccentric wear, and extend the service life of the pipe and the rod. In order to increase the service life of the centralizer, reduce the number of oil well maintenance times, and extend the production cycle of the oil well, the material selection of the centralizer is particularly important.

[0003] The double-layer ball centralizer adopts a double-layer independent ball structure to reduce friction and torque, and avoid the risk of fracture and jamming underground. The balls on the side of the centralizer are generally installed on the surface of the centralizer by relying on the friction force of the bead-set surface. This installation method requires more parts and is more troublesome to install. Therefore, we designed an inlaid double-layer ball centralizer and its inlay groove processing method to reduce the parts required for installation and improve the assembly efficiency of the double-layer ball centralizer. In addition, the inlay hole production does not require frequent movement of the centralizer shell, thereby improving the production efficiency. Summary of the invention

[0004] The object of the present invention is to provide an inlaid double-layer ball centralizer and a method for processing an inlaid groove thereof, which has the advantages of reducing the parts required for installation and improving the assembly efficiency of the double-layer ball centralizer. In addition, the inlaid hole production does not require frequent movement of the centralizer housing, thereby improving the production efficiency, so as to solve the above-mentioned background technical problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a method for processing an inlaid groove of an inlaid double-layer ball centralizer, the processing method is applied to a processing device for the inlaid groove of the centralizer, the processing device comprises a bottom bracket, a fixed shell is fixedly installed on the top of the bottom bracket, a fixed platform is fixedly connected to the top of the fixed shell, the four corners of the bottom of the fixed platform are rotatably connected with a V-shaped plate through a rotating shaft, the top of the V-shaped plate extends to the top of the fixed platform, the four corners of the top of the fixed platform are provided with rectangular holes for the V-shaped plate to move, and a V-shaped plate is set between the V-shaped plate and the inner wall of the fixed shell. There is a driving assembly, a square column is fixedly installed on the left side of the top of the bottom bracket, a fixing frame is welded on the top of the square column, a threaded rod 2 is rotatably connected to the inner cavity of the fixing frame, a motor 2 is fixedly installed on the top of the fixing frame, the output shaft of the motor 2 passes through the inner cavity of the fixing frame and is fixedly connected to the threaded rod 2, a cantilever plate is threadedly connected to the surface of the threaded rod 2, a movable frame is provided at the bottom of the cantilever plate, a rotating driving assembly is provided between the movable frame and the cantilever plate, a drilling rig is provided at the bottom of the movable frame, and a propulsion assembly is provided between the drilling rig and the movable frame;

[0006] A mosaic double-layer ball centralizer, the mosaic groove of the mosaic double-layer ball centralizer is processed by the above-mentioned equipment, the mosaic double-layer ball centralizer comprises a centralizer shell, the surface of the centralizer shell is provided with six arc-shaped convex strips in a circular array, the surface of the arc-shaped convex strips is provided with two penetrating inlay hole bodies, the inner cavity of the inlay hole body is provided with balls, the bottom of the centralizer shell is provided with a limiting edge integrally formed with the centralizer shell, the inner cavity of the centralizer shell is installed with a limiting inner support ring that fits with the limiting edge, six long screws are penetrated on the limiting edge, the long screws extend to the inner cavity of the centralizer shell and are threadedly connected with the limiting inner support ring;

[0007] The processing method of the inlaid double-layer ball centralizer inlay groove comprises the following processing steps:

[0008] Step 1: Place the centralizer housing on the top of the fixed platform so that the four V-shaped plates are located on the inner side of the centralizer housing. Then operate the motor to drive the threaded rod to rotate. The cross-shaped plate moves downward under the guidance of the guide rod due to the thread. The cross-shaped plate drives the vertical plate and the sliding frame to move downward, so that the sliding pin slides in the inner cavity of the sliding frame, and then drives the V-shaped plate to rotate outward, so that the V-shaped plate is squeezed on the inner side of the limiting edge, and the centralizer housing is firmly fixed;

[0009] Step 2: Then the motor 2 drives the threaded rod 2 to rotate, and the thread causes the cantilever plate, the movable frame, the rotating drive assembly, the drilling rig and the propulsion assembly to move up and down, so that the drilling rig extends into the inner cavity of the centralizer housing and aligns with the opening position. Then the reduction motor drives the threaded rod 3 to rotate slowly, and the threaded sleeve moves due to the limit of the thread and the inner cavity of the movable frame. The threaded sleeve drives the working drilling rig to punch a hole in the centralizer housing. After a hole is punched, the reduction motor reverses to make the drilling rig leave the inner cavity of the hole.

[0010] Step 3: When switching the drilling position, the cylinder extends or retracts to drive the rack to move, and the rack drives the fixed rail to rotate, and then drives the shaft column rod and the connecting frame to rotate. The connecting frame drives the drill to rotate through the movable frame and the propulsion assembly, and rotates to the next drilling position. The propulsion assembly drives the working drill to move for the next drilling operation. The height of the drilling position can be adjusted by the operation of motor 2. After all twelve holes on the centralizer housing are opened, the drill bit on the drill is replaced with a repair drill bit. The working drill is driven by the above structure to perform a hole repair operation on the holes, so that the outer side of the repaired hole is arc-shaped, ensuring that the ball will not fall out from the outside of the hole. Until all the holes are trimmed into the inlaid hole body, then the motor is reversed to move the cross plate downward, so that the four V-shaped plates rotate towards each other, cancel the fixation of the centralizer housing, and then remove the centralizer housing and clean the metal debris generated by the opening on the top of the fixed platform.

[0011] Preferably, the driving assembly includes a motor 1 fixedly mounted on the bottom of the inner cavity of the fixed shell, a threaded rod 1 being fixedly mounted on the output shaft of the motor 1, the top of the threaded rod 1 being rotatably connected to the fixed platform, a cross-shaped plate being threadedly connected to the surface of the threaded rod 1, the four ends of the top of the cross-shaped plate being fixedly connected to a vertical plate, the top of the vertical plate being fixedly connected to two symmetrical sliding frames, and the bottoms of both sides of the V-shaped plate being fixedly connected to sliding pins that slide in the inner cavity of the sliding frame.

[0012] Preferably, four guide rods are fixedly connected to the bottom of the inner cavity of the fixed shell, and the cross-shaped plate is slidably connected to the surfaces of the four guide rods.

[0013] Preferably, the rotating drive assembly includes a connecting frame fixedly connected to the top of the movable frame, the top of the connecting frame is fixedly connected to an axial column rod, the top of the axial column rod passes through the top of the cantilever beam plate and is fixedly connected to a gear on the surface, a cylinder is fixedly installed on the top of the cantilever beam plate, a rack is fixedly installed on the output end of the cylinder, and the rack is meshed with the gear.

[0014] Preferably, the top of the cantilever beam plate is fixedly connected to a fixed rail, and the rack is slidably connected to the inner cavity of the fixed rail.

[0015] Preferably, the propulsion assembly includes a threaded rod three rotatably connected to the inner cavity of the movable frame, the surface of the threaded rod three is threadedly connected to a threaded sleeve, the bottom of the threaded sleeve is fixedly connected to the drilling rig, and a reduction motor is installed at the bottom of the movable frame, and the output shaft of the reduction motor is fixedly installed to the threaded rod three.

[0016] Preferably, the left ends of the front and rear sides of the cantilever beam plate are provided with sliding grooves for sliding on the surface of the fixed frame, and two symmetrical diagonal braces are welded to the inner side of the cantilever beam plate.

[0017] Preferably, a plurality of guide bars are fixedly connected to the surface of the limiting inner support ring in an annular array, and a plurality of guide grooves matched with the guide bars are formed in the inner cavity of the centralizer housing.

[0018] Preferably, six countersunk holes for long screws to pass through are provided on one side of the limiting surrounding edge.

[0019] Preferably, a threaded hole for threaded connection with a long screw is provided on one side of the limiting inner support ring close to the limiting surrounding edge.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention places an unperforated centralizer shell on the top of a fixed platform, fixes it by operating a V-shaped plate through a driving assembly, drives a second motor to operate a second threaded rod to drive a cantilever plate, a movable frame, a rotating driving assembly, a drilling rig and a propulsion assembly to move up and down, and the drilling rig in a working state of the propulsion assembly moves to perforate and repair the centralizer shell. The rotating driving assembly can adjust the operating direction of the drilling rig, and the manufacturing can be completed without moving the centralizer shell. The centralizer shell is removed, and balls are plugged on the inlay hole body. Then, a limiting inner support ring is placed in the inner cavity of the centralizer shell, and the balls can be loaded into the inner side of the upper inlay hole body. Then, the inlay type double-layer ball centralizer is assembled by fastening with a long screw, thereby reducing the parts required for installation and improving the assembly efficiency of the double-layer ball centralizer. In addition, the inlay hole manufacturing does not require frequent movement of the centralizer shell, thereby improving the manufacturing efficiency.

[0022] 2. The present invention provides guide rods so that the cross-shaped plate will slide on the surfaces of four guide rods during its up and down movement, thereby guiding and limiting the up and down movement of the cross-shaped plate, improving the stability and reliability of the up and down movement of the cross-shaped plate, and ensuring that the cross-shaped plate will not rotate along with the rotation of threaded rod one.

[0023] 3. The present invention provides a slide groove, and the up and down movement of the cantilever beam plate will drive the slide groove to slide on the surface of the fixed frame, which can improve the supporting strength of the cantilever beam plate. The diagonal brace also increases the strength of the cantilever beam plate, preventing the deformation of the cantilever beam plate from affecting the drilling direction of the drill.

[0024] 4. The present invention uses the guide bar and the guide groove in coordination. When the limiting inner support ring is placed in the inner cavity of the stabilizer housing, the guide bar will enter the inner cavity of the guide groove to limit the limiting inner support ring, thereby limiting the rotation of the limiting inner support ring, and also providing convenience for aligning the threaded hole and the countersunk hole, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein:

[0026] Figure 1 A three-dimensional schematic diagram of an embodiment of the present invention;

[0027] Figure 2 It is a three-dimensional cross-sectional schematic diagram of a fixed shell and a fixed platform according to an embodiment of the present invention;

[0028] Figure 3 An embodiment of the present invention Figure 2 A partial enlarged view of point A;

[0029] Figure 4 It is a three-dimensional schematic diagram of a cantilever beam plate and a movable frame in one embodiment of the present invention;

[0030] Figure 5 It is a three-dimensional schematic diagram of a movable frame and a drilling rig according to an embodiment of the present invention;

[0031] Figure 6 A three-dimensional schematic diagram of a centralizer according to an embodiment of the present invention;

[0032] Figure 7 This is a three-dimensional disassembled schematic diagram of a centralizer according to an embodiment of the present invention;

[0033] Figure 8 The figure is a cross-sectional schematic diagram of the local structure of the centralizer housing according to an embodiment of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. bottom bracket, 2. fixed shell, 3. fixed platform, 4. V-shaped plate, 5. rectangular hole, 6. drive assembly, 61. motor 1, 62. threaded rod 1, 63. cross-shaped plate, 64. vertical plate, 65. sliding frame, 66. sliding pin, 67. guide rod, 7. square column, 8. fixed frame, 9. threaded rod 2, 10. motor 2, 11. cantilever beam plate, 12. movable frame, 13. rotation drive assembly, 131. connecting frame, 132. shaft column rod, 13 3. Gear, 134. Cylinder, 135. Rack, 136. Fixed rail, 14. Drilling rig, 15. Propulsion assembly, 151. Threaded rod three, 152. Threaded sleeve, 153. Reducer motor, 16. Slide, 17. Centralizer housing, 18. Arc convex strip, 19. Inlaid hole body, 20. Ball, 21. Limiting edge, 22. Limiting inner support ring, 23. Long screw, 24. Guide strip, 25. Guide groove, 26. Countersunk hole, 27. Threaded hole. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the inlaid double-layer ball centralizer and the inlaid groove machining method thereof of the present invention will be described with reference to the accompanying drawings.

[0037] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0038] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0039] Embodiment 1

[0040] Figure 1-8A method for processing an inlaid double-layer ball straightener inlay groove according to an embodiment of the present invention is shown, and the processing method is applied to a processing device for processing a straightener inlay groove, and the processing device includes a bottom bracket 1, a fixed shell 2 is fixedly installed on the top of the bottom bracket 1, a fixed platform 3 is fixedly connected to the top of the fixed shell 2, four corners of the bottom of the fixed platform 3 are rotatably connected to a V-shaped plate 4 through a rotating shaft, the top of the V-shaped plate 4 extends to the top of the fixed platform 3, and four corners of the top of the fixed platform 3 are provided with rectangular holes 5 for the V-shaped plate 4 to move, a driving component 6 is arranged between the V-shaped plate 4 and the inner wall of the fixed shell 2, a square column 7 is fixedly installed on the left side of the top of the bottom bracket 1, a fixed frame 8 is welded to the top of the square column 7, a threaded rod 2 9 is rotatably connected to the inner cavity of the fixed frame 8, a motor 2 10 is fixedly installed on the top of the fixed frame 8, the output shaft of the motor 2 10 passes through the inner cavity of the fixed frame 8 and is fixedly connected to the threaded rod 2 9, a cantilever plate 11 is threadedly connected to the surface of the threaded rod 2 9, and the bottom of the cantilever plate 11 is arranged There is a movable frame 12, a rotating drive assembly 13 is arranged between the movable frame 12 and the cantilever plate 11, a drilling rig 14 is arranged at the bottom of the movable frame 12, a propulsion assembly 15 is arranged between the drilling rig 14 and the movable frame 12, the propulsion assembly 15 includes a threaded rod 3 151 rotatably connected to the inner cavity of the movable frame 12, a threaded sleeve 152 is threadedly connected to the surface of the threaded rod 3 151, the bottom of the threaded sleeve 152 is fixedly connected to the drilling rig 14, and a reduction motor 153 is installed at the bottom of the movable frame 12. The output shaft of the machine 153 is fixedly installed with the threaded rod 151. The left ends of the front and rear sides of the cantilever beam plate 11 are provided with a slide groove 16 that slides on the surface of the fixed frame 8. Two symmetrical diagonal braces are welded on the inner side of the cantilever beam plate 11. Through the setting of the slide groove 16, the cantilever beam plate 11 moves up and down, which drives the slide groove 16 to slide on the surface of the fixed frame 8, which can improve the support strength of the cantilever beam plate 11. The diagonal brace also increases the strength of the cantilever beam plate 11, preventing the deformation of the cantilever beam plate 11 from affecting the drilling direction of the drilling rig 14.

[0041] A mosaic double-layer ball centralizer, the mosaic groove of the mosaic double-layer ball centralizer is processed by the above-mentioned equipment, the mosaic double-layer ball centralizer comprises a centralizer shell 17, the surface of the centralizer shell 17 is provided with six arc-shaped convex strips 18 in a circular array, the surface of the arc-shaped convex strips 18 is provided with two penetrating inlay hole bodies 19, the inner cavity of the inlay hole body 19 is provided with a ball 20, the bottom of the centralizer shell 17 is provided with a limiting edge 21 integrally formed with the centralizer shell 17, the inner cavity of the centralizer shell 17 is installed with a limiting inner support ring 22 that fits the limiting edge 21, six long screws 23 are penetrated on the limiting edge 21, the long screws 23 extend to the inner cavity of the centralizer shell 17 and screw with the limiting inner support ring 22 The surface of the limiting inner support ring 22 is connected with a plurality of guide bars 24 in an annular array, and the inner cavity of the centralizer housing 17 is provided with a plurality of guide grooves 25 adapted to the guide bars 24. When the limiting inner support ring 22 is placed in the inner cavity of the centralizer housing 17, the guide bars 24 enter the inner cavity of the guide grooves 25 through the cooperation of the guide bars 24 and the guide grooves 25, so as to limit the limiting inner support ring 22, limit the rotation of the limiting inner support ring 22, and provide convenience for aligning the threaded hole 27 with the countersunk hole 26, thereby improving the installation efficiency. Six countersunk holes 26 for the long screws 23 to pass through are provided on one side of the limiting surrounding edge 21, and a threaded hole 27 for the long screws 23 to be threadedly connected is provided on the side of the limiting inner support ring 22 close to the limiting surrounding edge 21;

[0042] The processing method of the inlaid double-layer ball centralizer inlay groove comprises the following processing steps:

[0043] Step 1: Place the centralizer housing 17 on the top of the fixed platform 3 so that the four V-shaped plates 4 are all located on the inner side of the centralizer housing 17, then operate the motor 1 61 to drive the threaded rod 1 62 to rotate, and the cross-shaped plate 63 moves downward under the guidance of the guide rod 67 due to the thread, and the cross-shaped plate 63 drives the vertical plate 64 and the sliding frame 65 to move downward, so that the sliding pin 66 slides in the inner cavity of the sliding frame 65, and then drives the V-shaped plate 4 to rotate outward, so that the V-shaped plate 4 is squeezed on the inner side of the limiting edge 21, and the centralizer housing 17 is firmly fixed;

[0044] Step 2: Then the motor 2 10 drives the threaded rod 2 9 to rotate, and the thread causes the beam plate 11, the movable frame 12, the rotation drive assembly 13, the drilling rig 14 and the propulsion assembly 15 to move up and down, so that the drilling rig 14 extends into the inner cavity of the centralizer housing 17 and aligns with the opening position, and then the reduction motor 153 drives the threaded rod 3 151 to rotate slowly, and the threaded sleeve 152 moves due to the limit of the thread and the inner cavity of the movable frame 12, and the threaded sleeve 152 drives the working drilling rig 14 to perform a drilling operation on the centralizer housing 17. After a hole is drilled, the reduction motor 153 reverses to make the drilling rig 14 leave the inner cavity of the hole to be drilled;

[0045] Step 3: When switching the drilling position, the cylinder 134 extends or retracts to drive the rack 135 to move, and the rack 135 drives the fixed rail 136 to rotate, thereby driving the shaft column rod 132 and the connecting frame 131 to rotate, and the connecting frame 131 drives the drilling machine 14 to rotate through the movable frame 12 and the propulsion assembly 15, and rotates to the next drilling position. The propulsion assembly 15 drives the drilling machine 14 in the working state to move for the next drilling operation. The height of the drilling position can be adjusted by the operation of the motor 2 10 until all twelve holes on the centralizer housing 17 are After the opening is completed, the drill bit on the drilling rig 14 is replaced with a repairing drill bit, and the drilling rig 14 in working state is driven by the above structure to perform a hole repair operation on the hole, so that the outer side of the repaired hole is arc-shaped, ensuring that the ball 20 will not fall out from the outside of the hole when installed, until all the holes are repaired into the embedded hole body 19, then the motor 61 is reversed to move the cross plate 63 downward, so that the four V-shaped plates 4 rotate towards each other, and the fixation of the stabilizer housing 17 is cancelled, and the stabilizer housing 17 and the metal debris generated by the opening on the top of the cleaning fixed platform 3 can be removed.

[0046] Embodiment 2

[0047] Basically the same as the first embodiment, further: the driving assembly 6 includes a motor 61 fixedly installed at the bottom of the inner cavity of the fixed shell 2, the output shaft of the motor 61 is fixedly installed with a threaded rod 62, the top of the threaded rod 62 is rotatably connected to the fixed platform 3, the surface of the threaded rod 62 is threadedly connected with a cross-shaped plate 63, the four ends of the top of the cross-shaped plate 63 are fixedly connected with a vertical plate 64, the top of the vertical plate 64 is fixedly connected with two symmetrical sliding frames 65, the bottoms of both sides of the V-shaped plate 4 are fixedly connected with sliding pins 66 sliding in the inner cavity of the sliding frame 65, and the bottom of the inner cavity of the fixed shell 2 is fixedly connected with four guide rods 67, and the cross-shaped plate 63 is slidably connected to the surfaces of the four guide rods 67. Through the setting of the guide rods 67, the cross-shaped plate 63 will slide on the surfaces of the four guide rods 67 during the up and down movement, so as to guide and limit the up and down movement of the cross-shaped plate 63, thereby improving the stability and reliability of the up and down movement of the cross-shaped plate 63 and ensuring that the cross-shaped plate 63 will not rotate with the rotation of the threaded rod 62.

[0048] Embodiment 3

[0049] Basically the same as the first embodiment, further: the rotation drive assembly 13 includes a connecting frame 131 fixedly connected to the top of the movable frame 12, the top of the connecting frame 131 is fixedly connected to an axial column rod 132, the top of the axial column rod 132 passes through the top of the cantilever beam plate 11 and is fixedly connected to a gear 133 on the surface, a cylinder 134 is fixedly installed on the top of the cantilever beam plate 11, a rack 135 is fixedly installed on the output end of the cylinder 134, the rack 135 is meshed with the gear 133, the top of the cantilever beam plate 11 is fixedly connected to a fixed rail 136, and the rack 135 is slidably connected to the inner cavity of the fixed rail 136.

[0050] In summary, the inlaid double-layer ball centralizer and the inlaid groove processing method thereof are as follows: the unperforated centralizer housing 17 is placed on the top of the fixed platform 3, the V-shaped plate 4 is fixed by the driving component 6, the threaded rod 29 is operated by the motor 2 10 to drive the cantilever plate 11, the movable frame 12, the rotating driving component 13, the drilling machine 14 and the propulsion component 15 to move up and down, the propulsion component 15 operates the working state of the drilling machine 14 to drill and repair the centralizer housing 17, and the rotating driving component 13 can adjust the operation direction of the drilling machine 14. The manufacturing process can be completed without moving the centralizer housing 17. The centralizer housing 17 is removed, and the ball 20 is plugged into the inlay hole body 19. Then the limiting inner support ring 22 is placed in the inner cavity of the centralizer housing 17. The ball 20 can be installed into the inner side of the upper inlay hole body 19, and then it is fastened with the long screws 23. The inlay type double-layer ball centralizer can be assembled, which can reduce the parts required for installation and improve the assembly efficiency of the double-layer ball centralizer. In addition, the inlay hole manufacturing does not require frequent movement of the centralizer housing, thereby improving the manufacturing efficiency.

[0051] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A method for processing an inlaid groove of an inlaid double-layer ball centralizer, characterized in that: The processing method is applied to processing equipment for centralizer inlay grooves. The processing equipment comprises a bottom bracket (1). A fixed shell (2) is fixedly installed on the top of the bottom bracket (1). A fixed platform (3) is fixedly connected to the top of the fixed shell (2). Four corners of the bottom of the fixed platform (3) are rotatably connected to a V-shaped plate (4) via a rotating shaft. The top of the V-shaped plate (4) extends to the top of the fixed platform (3). Rectangular holes (5) for the V-shaped plate (4) to move are provided at the four corners of the top of the fixed platform (3). A driving assembly (6) is provided between the V-shaped plate (4) and the inner wall of the fixed shell (2). A square column (7) is fixedly installed on the left side of the top of the bottom bracket (1). The square column A fixed frame (8) is welded to the top of (7), the inner cavity of the fixed frame (8) is rotatably connected to a second threaded rod (9), a second motor (10) is fixedly installed on the top of the fixed frame (8), the output shaft of the second motor (10) passes through the inner cavity of the fixed frame (8) and is fixedly connected to the second threaded rod (9), the surface of the second threaded rod (9) is threadedly connected to a cantilever beam (11), a movable frame (12) is arranged at the bottom of the cantilever beam (11), a rotation driving assembly (13) is arranged between the movable frame (12) and the cantilever beam (11), a drilling rig (14) is arranged at the bottom of the movable frame (12), and a propulsion assembly (15) is arranged between the drilling rig (14) and the movable frame (12); A mosaic double-layer ball centralizer, the mosaic groove of the mosaic double-layer ball centralizer is processed by the above-mentioned equipment, the mosaic double-layer ball centralizer comprises a centralizer shell (17), the surface of the centralizer shell (17) is provided with six arc-shaped convex strips (18) in an annular array, the surface of the arc-shaped convex strips (18) is provided with two penetrating embedding hole bodies (19), the inner cavity of the embedding hole body (19) is provided with a ball (20), the bottom of the centralizer shell (17) is provided with a limiting edge (21) integrally formed with the centralizer shell (17), the inner cavity of the centralizer shell (17) is installed with a limiting inner support ring (22) fitted with the limiting edge (21), six long screws (23) are penetrated on the limiting edge (21), the long screws (23) extend to the inner cavity of the centralizer shell (17) and are threadedly connected with the limiting inner support ring (22); The processing method of the inlaid double-layer ball centralizer inlay groove comprises the following processing steps: Step 1: Place the centralizer housing (17) on the top of the fixed platform (3) so that the four V-shaped plates (4) are all located on the inner side of the centralizer housing (17), then operate the motor 1 (61) to drive the threaded rod 1 (62) to rotate, and the cross-shaped plate (63) moves downward under the guidance of the guide rod (67) due to the thread, and the cross-shaped plate (63) drives the vertical plate (64) and the sliding frame (65) to move downward, so that the sliding pin (66) slides in the inner cavity of the sliding frame (65), and then drives the V-shaped plate (4) to rotate outward, so that the V-shaped plate (4) is pressed against the inner side of the limiting edge (21), and the centralizer housing (17) is firmly fixed; Step 2: Then the motor 2 (10) drives the threaded rod 2 (9) to rotate, and the thread causes the beam plate (11), the movable frame (12), the rotation drive assembly (13), the drilling machine (14) and the propulsion assembly (15) to move up and down, so that the drilling machine (14) extends into the inner cavity of the centralizer housing (17) and aligns with the hole opening position, and then the reduction motor (153) drives the threaded rod 3 (151) to rotate slowly, and the threaded sleeve (152) moves due to the limit of the thread and the inner cavity of the movable frame (12), and the threaded sleeve (152) drives the working drilling machine (14) to perform a hole drilling operation on the centralizer housing (17). After a hole is drilled, the reduction motor (153) is reversed, so that the drilling machine (14) is separated from the inner cavity of the hole to be drilled; Step 3: When switching the drilling position, the cylinder (134) extends or retracts to drive the rack (135) to move, and the rack (135) drives the fixed rail (136) to rotate, thereby driving the shaft column (132) and the connecting frame (131) to rotate, and the connecting frame (131) drives the drilling machine (14) to rotate through the movable frame (12) and the propulsion assembly (15) to rotate to the next drilling position. The propulsion assembly (15) drives the drilling machine (14) in the working state to move for the next drilling operation. The height of the drilling position can be adjusted by the operation of the motor 2 (10) until the height of the drilling machine (14) is adjusted to the height of the centralizer housing (17). After all twelve holes are opened, the drill bit on the drilling machine (14) is replaced with a hole repairing drill bit, and the drilling machine (14) in working state is driven by the above structure to perform hole repairing operation on the holes, so that the outer side of the repaired holes is arc-shaped, ensuring that the balls (20) will not fall out from the outer side of the holes when installed, until all the holes are repaired into the inlay hole body (19), then the motor 1 (61) is reversed to move the cross-shaped plate (63) downward, so that the four V-shaped plates (4) rotate towards each other, and the fixation of the centralizer housing (17) is cancelled, and the centralizer housing (17) can be removed and the metal debris generated by the opening on the top of the fixed platform (3) can be cleaned.

2. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 1 is characterized in that: The driving assembly (6) comprises a motor (61) fixedly mounted on the bottom of the inner cavity of the fixed shell (2); a threaded rod (62) is fixedly mounted on the output shaft of the motor (61); the top of the threaded rod (62) is rotatably connected to the fixed platform (3); a cross-shaped plate (63) is threadedly connected to the surface of the threaded rod (62); the four ends of the top of the cross-shaped plate (63) are fixedly connected to a vertical plate (64); the top of the vertical plate (64) is fixedly connected to two symmetrical sliding frames (65); and the bottoms of both sides of the V-shaped plate (4) are fixedly connected to sliding pins (66) that slide in the inner cavity of the sliding frame (65).

3. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 2 is characterized in that: Four guide rods (67) are fixedly connected to the bottom of the inner cavity of the fixed shell (2), and the cross-shaped plate (63) is slidably connected to the surfaces of the four guide rods (67).

4. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 3 is characterized in that: The rotation drive assembly (13) comprises a connecting frame (131) fixedly connected to the top of the movable frame (12); the top of the connecting frame (131) is fixedly connected to a shaft column (132); the top of the shaft column (132) penetrates to the top of the cantilever beam plate (11) and is fixedly connected to a gear (133) on the surface; the top of the cantilever beam plate (11) is fixedly mounted with a cylinder (134); the output end of the cylinder (134) is fixedly mounted with a rack (135); the rack (135) is meshed with the gear (133).

5. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 4 is characterized in that: The top of the cantilever beam plate (11) is fixedly connected to a fixed rail (136), and the rack (135) is slidably connected to the inner cavity of the fixed rail (136).

6. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 5, characterized in that: The propulsion assembly (15) comprises a threaded rod three (151) rotatably connected to the inner cavity of the movable frame (12); a threaded sleeve (152) is threadedly connected to the surface of the threaded rod three (151); the bottom of the threaded sleeve (152) is fixedly connected to the drilling rig (14); a reduction motor (153) is installed at the bottom of the movable frame (12); and the output shaft of the reduction motor (153) is fixedly installed to the threaded rod three (151).

7. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 6, characterized in that: The left ends of the front and rear sides of the cantilever beam plate (11) are both provided with sliding grooves (16) for sliding on the surface of the fixed frame (8), and two symmetrical diagonal braces are welded to the inner side of the cantilever beam plate (11).

8. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 7, characterized in that: A plurality of guide strips (24) are fixedly connected in an annular array on the surface of the limiting inner support ring (22), and a plurality of guide grooves (25) adapted to the guide strips (24) are provided in the inner cavity of the centralizer housing (17).

9. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 8, characterized in that: Six countersunk holes (26) for long screws (23) to pass through are formed on one side of the limiting surrounding edge (21).

10. The method for processing the inlaid groove of the inlaid double-layer ball centralizer according to claim 9, characterized in that: A threaded hole (27) for threaded connection of a long screw (23) is provided on one side of the position-limiting inner support ring (22) close to the position-limiting surrounding edge (21).

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