High-wear-resistance wash pipe assembly and surface quality detection device thereof

Abstract

The invention is suitable for the technical field of oil exploitation equipment, and provides a high-wear-resistance wash pipe assembly and a surface quality detection device.The high-wear-resistance wash pipe assembly comprises a lower connecting pipe assembled in a mounting outer barrel, and the top of the lower connecting pipe is fixedly provided with a movable ring seat through a bolt; the mounting outer barrel is used for being fixed to drilling equipment through bolts and used for fixing a wash pipe assembly, and the bottom end of the lower connecting pipe is in threaded connection with a flange and used for being connected with a main shaft through bolts; the upper connecting pipe is connected with the mounting outer barrel through a plurality of connecting assemblies and located over the lower connecting pipe, and a flange at the top end of the upper connecting pipe is connected with a gooseneck pipe of the drilling equipment through bolts; and a static ring seat is fixedly mounted at the bottom of the upper connecting pipe through a bolt. According to the high-wear-resistance wash pipe assembly and the surface quality detection device thereof, through deep integration of an innovative structure and a detection technology, comprehensive improvement of the performance and the detection efficiency of the wash pipe assembly is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum extraction equipment, and in particular relates to a high-wear-resistant flushing pipe assembly and a surface quality detection device thereof. Background Art

[0002] In oil drilling equipment, the flush pipe assembly serves as the core sealing component of the high-pressure mud system, subjecting it to long-term impacts from high-pressure fluids and rotational friction. Traditional flush pipe assemblies suffer from the following technical drawbacks: The existing flush pipe assembly connection structure utilizes a rigid fixing method, preventing leakage accidents caused by contact surface separation due to wear between the dynamic and static ring seats. Furthermore, the assembly lacks real-time wear monitoring, typically requiring downtime and disassembly for inspection, resulting in reduced equipment utilization. Furthermore, after installation, the contact surface quality inspection of the dynamic and static ring seats in the flush pipe assembly relies on simple measuring tools, resulting in large flatness errors and complex inspection. Summary of the Invention

[0003] In order to solve the technical problem of contact surface separation caused by wear of the dynamic ring and the static ring in the flush pipe assembly, the present invention provides a highly wear-resistant flush pipe assembly and a surface quality detection device thereof.

[0004] The present invention is implemented as follows: a high-wear-resistant punching pipe assembly comprises: a lower pipe assembled in an installation outer cylinder, a dynamic ring seat being fixedly installed on the top of the lower pipe by bolts, the installation outer cylinder is used to be fixed to the drilling equipment by bolts to fix the punching pipe assembly, the bottom end of the lower pipe is threadedly connected to a flange for connecting the main shaft by bolts; an upper pipe connected to the installation outer cylinder by multiple connecting components and located directly above the lower pipe, the top flange of the upper pipe is connected to the gooseneck of the drilling equipment by bolts; a static ring seat is fixedly installed on the bottom of the upper pipe by bolts, the bottom surface of the static ring seat is in contact with the top surface of the dynamic ring seat, and multiple connecting components are evenly distributed in a ring shape; the static ring seat and the dynamic ring seat in the present invention are made of wear-resistant and high-temperature resistant ceramic materials or hard alloy materials to improve their wear resistance, high-pressure resistance and high-temperature resistance; wherein, the installation outer cylinder is rotatably connected to the lower pipe by two sealing bearings installed on the inner wall of the installation outer cylinder, and the two sealing bearings are fixedly sleeved on the outer wall of the lower pipe.

[0005] Preferably, the connecting assembly includes: a mounting seat fixedly installed on the top of the mounting outer cylinder by bolts, the bottom of the mounting seat is provided with a positioning column adapted to be fixed to the top of the mounting outer cylinder, so that the mounting seat can be positioned and installed on the top of the mounting outer cylinder; a connecting rod fixed to the flange at the bottom end of the upper pipe and vertically arranged, the mounting seat is slidably sleeved on the connecting rod; a first spring slidably sleeved on the connecting rod and located at the bottom of the mounting seat, the outer wall of the upper section of the connecting rod is provided with an external thread and a nut is threadedly installed, and the elastic force of the first spring in the multiple connecting assemblies is used to make the bottom surface of the static ring seat close to the top surface of the dynamic ring seat, so that the contact surfaces thereof remain in close contact without gaps.

[0006] Preferably, the lower connecting pipe is provided with a positioning ring integrally formed with the lower connecting pipe, which is used to support the top of the inner ring of one of the sealed bearings, and two annular retaining grooves are provided on the inner wall of the mounting outer cylinder, which are used to position and install the two sealed bearings and the outer rings of the retaining column sealed bearings, so that the lower connecting pipe and the mounting outer cylinder are positioned and installed.

[0007] Preferably, a sealing ring is provided on the bottom end flange of the upper connecting pipe, which is sealed with the inner wall of the mounting outer tube, and an oil chamber is formed between the upper sealing bearing and the upper connecting pipe, and a first oil filling port and a liquid pressure sensor are provided on both sides of the mounting outer tube. The first oil filling port is used to inject lubricating oil into the oil chamber to reduce the friction between the static ring seat and the dynamic ring seat during relative rotation. The liquid pressure sensor is used to monitor the change in the lubricating oil pressure in the oil chamber to monitor whether the contact surface between the static ring seat and the dynamic ring seat is sealed; a second oil filling port is provided on the mounting outer tube, which is used to inject lard lubricating oil into the space between the inner wall of the mounting outer tube and the outer wall of the lower connecting pipe and between the two sealed bearings, thereby lubricating the two sealed bearings.

[0008] Preferably, a plurality of monitoring components for monitoring the wear degree of the contact surface of the static ring seat and the dynamic ring seat are installed on the inner wall of the mounting outer cylinder, and the monitoring components include: a support block fixedly installed on the inner wall of the mounting outer cylinder, and a first potentiometer-type pressure sensor is installed on the top of the support block; the bottom of the bottom end flange of the upper pipe is fixedly connected to a compression spring, and the bottom end of the compression spring is fixedly installed with a connecting block, and the bottom of the connecting block is in contact with the force-bearing surface of the first potentiometer-type pressure sensor.

[0009] The present invention also proposes a surface quality detection device for a highly wear-resistant punching pipe assembly, comprising: a circular storage seat mounted on a testing table, a placement groove for placing a lower connecting pipe being provided on the top of the storage seat; a vertical plate fixed on the top of the testing table and used for installing a detection actuator, the detection actuator being used to detect the flatness of the top surface of the dynamic ring seat; a rotating mechanism mounted on the testing table and the bottom of the storage seat for driving the storage seat to rotate, the lower connecting pipe being driven to rotate by the rotating mechanism, so that the detection actuator can comprehensively detect the flatness of the dynamic ring seat surface; wherein a U-shaped frame is installed on the rotating mechanism for installing a center positioning mechanism for centering the lower connecting pipe; a fixing mechanism is also installed on the bottom of the storage seat for fixing the lower connecting pipe so that it is fixed to the storage seat.

[0010] Preferably, the rotating mechanism includes: a supporting base fixedly mounted on the bottom of the testing platform, a rotating drum rotatably mounted on the supporting base through an annular bearing, the top of the rotating drum is fixedly connected to the bottom of the storage seat; a reduction motor fixedly mounted on the supporting base, a circular gear fixedly sleeved on the output shaft of the reduction motor; an annular seat fixedly mounted on the rotating drum, the annular seat being sleeved with an annular gear meshing with the circular gear.

[0011] Preferably, the center positioning mechanism includes: a U-shaped frame fixedly mounted on the inner wall of the rotating drum, two first electric push rods fixedly mounted on the bottom inner wall of the U-shaped frame; a mounting plate fixedly mounted on the top ends of the output rods of the two first electric push rods, the mounting plate being equipped with a tightening mechanism for center positioning the lower connecting pipe so that it is located on the same mid-vertical line as the center positions of the rotating drum and the storage seat.

[0012] Preferably, the expansion mechanism includes: a frame fixedly mounted on the bottom of the mounting plate, a positioning motor fixedly mounted on the frame; two parallel vertical rods fixedly mounted on the top of the mounting plate, the top ends of the two vertical rods fixedly mounted with the same top block; a bidirectional screw rod rotatably mounted between the mounting plate and the top block and parallel to the two vertical rods; two lifting blocks threadedly sleeved on the bidirectional screw rod and symmetrically arranged, the two lifting blocks are slidably sleeved on the two vertical rods; two symmetrically arranged support blocks, the tops and bottoms of the two support blocks are hinged with hinged joints Rod, one end of the four hinged rods is hinged to the two sides of the two lifting blocks respectively; wherein, the two support blocks are embedded with a first rollable ball on one side of each other; the expansion mechanism can be raised to the lower pipe by the two first electric push rods, and then the two lifting blocks are brought closer to each other by starting the expansion mechanism, so that the two support blocks are moved away from each other until the first balls support the inner walls on both sides of the lower pipe. Since the first balls are embedded in the support blocks and can roll, the lower pipe can be moved to the center position so that it is located on the same vertical midline as the center position of the rotating drum and the storage seat.

[0013] Preferably, the fixing mechanism includes: a plurality of fixing blocks that are fixedly mounted on the bottom of the storage seat; two screws rotatably mounted on the corresponding fixing blocks, a slider being threadedly sleeved on the screws, the slider passing through a sliding hole opened on the storage seat and connected to the inner wall of the sliding hole; two symmetrically arranged clamping blocks respectively fixedly mounted on the top of the two sliders, the clamping blocks being provided with inclined surfaces, and in the process of the two clamping blocks approaching each other, the bottom end flange of the lower pipe is gradually pressed by the inclined surfaces, thereby achieving the fixation of the lower pipe; two first bevel gears respectively fixedly sleeved on one end of the two screws close to each other; a rotating ring rotatably sleeved on the rotating drum through an annular bearing, a second bevel gear fixedly sleeved on the rotating ring and meshing with the two first bevel gears; a fixed motor fixed to the bottom of the storage seat, a third bevel gear fixedly sleeved on the output shaft of the fixed motor and meshing with the second bevel gear.

[0014] Preferably, the detection actuator includes: a second electric push rod fixedly mounted on the inner wall of the top of the vertical plate, the bottom end of the output rod of the second electric push rod is fixedly mounted on an inverted U-shaped seat; two smooth rods fixedly mounted on the inner walls on both sides of the inverted U-shaped seat, arranged horizontally and parallel to each other; a slide seat slidably sleeved on the two smooth rods, and a push block fixedly mounted on the slide seat; a third electric push rod fixedly mounted on the inner wall of one side of the inverted U-shaped seat, the output rod of the third electric push rod is fixedly connected to the push block; a fixed plate fixedly mounted on the bottom of the slide seat, and two fixed plates slidably mounted on the fixed plate The invention also includes a vertical slide bar, each with a limit block fixedly mounted on its top; a connecting plate fixedly mounted on its bottom, each with a second spring slidingly sleeved thereon; a pressure plate slidingly sleeved on each of the vertical slide bars, each with two second springs located between the pressure plate and the connecting plate; a second potentiometer-type pressure sensor fixedly mounted on the bottom of the fixing plate and located between the fixing plate and the pressure plate, the force-bearing surface of the second potentiometer-type pressure sensor contacting the top of the pressure plate; and a mounting block fixedly mounted on the bottom of the connecting plate, the bottom of the mounting block having a second ball embedded therein. A third electric push rod is used to cause the second ball to move horizontally on the top surface of the movable ring seat. A second electric push rod is used to cause the second ball to descend until it contacts the top surface of the movable ring seat. The rotating mechanism then cooperates to fully inspect the top surface of the movable ring seat. If the pressure value detected by the second potentiometer-type pressure sensor remains unchanged, the top surface of the movable ring seat is sufficiently flat. If the pressure value detected significantly changes, the top surface of the movable ring seat is unsatisfactory in terms of flatness. Similarly, the flatness of the bottom surface of the static ring seat on the upper connecting pipe is also tested in the same way.

[0015] Compared with related technologies, the high-wear-resistant flushing pipe assembly and surface quality detection device provided by the present invention have the following beneficial effects: 1. The dynamic and static ring seats are made of wear-resistant ceramics or carbide materials, which significantly improves the resistance to high temperature and high pressure, reduces the risk of seal failure caused by wear, and extends the service life; 2. The elastic connection component adaptively compensates for contact surface wear through spring preload, ensuring a gap-free seal between the dynamic and static ring seats, effectively preventing leakage; 3. An integrated potentiometer-type pressure sensor and lubricating oil pressure monitoring module provide real-time feedback on contact surface wear and lubrication conditions, enabling component health status to be determined without downtime, improving equipment utilization. 4. The dedicated surface quality inspection device cooperates with the rotating scanning inspection head through the center positioning mechanism to realize full-circumferential automatic inspection of the top surface of the dynamic ring seat, improve the flatness inspection accuracy, improve the inspection efficiency, and completely solve the problems of large errors and cumbersome operation in manual inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a front cross-sectional structure of a high-wear-resistant flushing pipe assembly provided by the present invention; Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG; Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part B shown in FIG; Figure 4 A three-dimensional assembly diagram of the lower connecting pipe and the positioning ring in the present invention; Figure 5 It is an assembly diagram of the lower connecting pipe and the dynamic ring seat, and the upper connecting pipe and the static ring seat in the present invention; Figure 6 A schematic front cross-sectional structural diagram of a surface quality detection device for a high-wear-resistant flushing pipe assembly provided by the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part C shown in ; Figure 8 for Figure 6 Schematic diagram of the enlarged structure of part D shown in FIG; Figure 9 for Figure 6 Schematic diagram of the enlarged structure of part E shown in FIG; Figure 10 It is a partial front view structural diagram of the fixing mechanism in the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the neutral plate of the present invention; Figure 12 It is a schematic diagram of the three-dimensional structure of the storage seat in the present invention.

[0017] 1. Mounting outer cylinder; 2. Mounting seat; 3. Testing platform; 301. Placement groove; 302. Sliding hole; 10. Sealing ring; 11. Lower connecting pipe; 12. Dynamic ring seat; 13. Upper connecting pipe; 14. Static ring seat; 15. Positioning ring; 16. Sealed bearing; 17. First oil filling port; 18. Second oil filling port; 19. Liquid pressure sensor; 20. Oil chamber; 21. Positioning column; 22. Connecting rod; 23. First spring; 24. Support block; 25. First potentiometer pressure sensor; 26. Connecting block; 27. Compression spring; 31. Storage seat; 32. Support base; 33. Rotating cylinder; 34. Reducer motor; 35. Circular gear; 36. Annular seat; 37. Annular gear; 41. U-shaped frame; 42. First electric push rod; 43. Mounting plate; 44. Frame; 45. Positioning motor; 46. Vertical rod; 47. Top block; 48. Bidirectional lead screw; 49. Lifting block; 50. Support block; 51. Articulated rod; 52. First ball bearing; 61. Fixed block; 62. Screw; 63. Slider; 64. Pressing block; 65. First bevel gear; 66. Rotating ring; 67. Second bevel gear; 68. Fixed motor; 69. Third bevel gear; 70. Vertical plate; 71. Second ball bearing; 72. Fixed plate; 73. Vertical slide bar; 74. Connecting plate; 75. Second spring; 76. Limit block; 77. Second potentiometer pressure sensor; 78. Pressing plate; 79. Mounting block; 80. Second electric push rod; 81. Inverted U-shaped seat; 82. Smoothing rod; 83. Slide seat; 84. Push block; 85. Third electric push rod. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification of this application and the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The embodiment of the present invention provides a high wear-resistant flushing pipe assembly, such as Figure 1-5As shown, the high wear-resistant flushing pipe assembly includes: a lower pipe 11 assembled in the mounting outer cylinder 1, the top of the lower pipe 11 is fixed with a dynamic ring seat 12 by bolts, the mounting outer cylinder 1 is used to be fixed to the drilling equipment by bolts to fix the flushing pipe assembly, the bottom end of the lower pipe 11 is threadedly connected with a flange for connecting the main shaft by bolts; an upper pipe 13 is connected to the mounting outer cylinder 1 through multiple connecting components and is located directly above the lower pipe 11, and the top flange of the upper pipe 13 is connected to the gooseneck of the drilling equipment by bolts; the upper A stationary ring seat 14 is fixed to the bottom of the connecting pipe 13 by bolts. The bottom surface of the stationary ring seat 14 contacts the top surface of the dynamic ring seat 12, and multiple connecting components are evenly distributed in a ring shape; the stationary ring seat 14 and the dynamic ring seat 12 in the present invention are made of wear-resistant and high-temperature resistant ceramic materials or hard alloy materials to improve their wear resistance, high pressure resistance and high temperature resistance; wherein, the mounting outer cylinder 1 is rotatably connected to the lower connecting pipe 11 through two sealed bearings 16 installed on the inner wall of the mounting outer cylinder 1, and the two sealed bearings 16 are fixedly sleeved on the outer wall of the lower connecting pipe 11.

[0021] In this embodiment, the high-wear-resistant flushing pipe assembly is integrally secured to the drilling equipment by bolting it to the outer tube 1. The lower connecting pipe 11 is connected to the main shaft via a bottom flange. The dynamic ring seat 12, bolted to the top, forms a sealed contact surface with the stationary ring seat 14, bolted to the bottom of the upper connecting pipe 13. Both are made of ceramic or cemented carbide, significantly enhancing their resistance to high temperatures, high pressures, and wear. Two sealed bearings 16, mounted on the inner wall of the outer tube 1, are sleeved onto the outer wall of the lower connecting pipe 11, ensuring stable operation under rotation. A circular arrangement of elastic connectors dynamically compresses the dynamic ring seat 12 and the stationary ring seat 14. The elastic force of the first spring 23 adaptively compensates for contact surface wear, ensuring a seamless seal between the bottom surface of the stationary ring seat 14 and the top surface of the dynamic ring seat 12. Lubricating oil is supplied to the oil chamber 20 through a first oil inlet 17, which monitors lubrication pressure changes in real time in conjunction with a liquid pressure sensor 19. The second oil inlet 18 provides independent lubrication channels for the sealed bearings 16, ensuring dual protection for the friction pair. The first potentiometer pressure sensor 25 in the monitoring assembly is linked with the compression spring 27 and the connecting block 26 to detect changes in the wear of the contact surface online.

[0022] In a further preferred embodiment of the present invention, the connecting assembly includes: a mounting seat 2 fixedly installed on the top of the mounting outer cylinder 1 by bolts, and a positioning column 21 fixed to the top of the mounting outer cylinder 1 is provided at the bottom of the mounting seat 2 to adapt to the mounting outer cylinder 1, so that the mounting seat 2 can be positioned and installed on the top of the mounting outer cylinder 1; a connecting rod 22 fixed to the flange at the bottom end of the upper pipe 13 and vertically arranged, and the mounting seat 2 is slidably sleeved on the connecting rod 22; a first spring 23 slidably sleeved on the connecting rod 22 and located at the bottom of the mounting seat 2, and an external thread is provided on the outer wall of the upper section of the connecting rod 22 and a nut is threadedly installed, and the elastic force of the first spring 23 in multiple connecting assemblies is used to make the bottom surface of the static ring seat 14 close to the top surface of the dynamic ring seat 12, so that its contact surface remains in close contact without gaps.

[0023] The nut on the upper section of the connecting rod 22 is externally threaded and can adjust the pre-tightening amount of the first spring 23 so that multiple annularly distributed connecting components can work together. During drilling operations, when a micro-gap is generated on the contact surface between the dynamic ring seat 12 and the static ring seat 14 due to wear, the first spring 23 automatically pushes the upper connecting tube 13 downward to compensate, ensuring that the bottom surface of the static ring seat 14 always presses the top surface of the dynamic ring seat 12 to form a seamless seal. The elastic connection design allows the upper connecting tube 13 to float axially while avoiding radial deviation through the sliding sleeve structure, and cooperates with the positioning column 21 and the mounting seat 2 to ensure that the overall structure remains stably centered when subjected to high-pressure mud impact, effectively solving the problem of sealing surface separation and leakage caused by traditional rigid connections.

[0024] In a further preferred embodiment of the present invention, the lower connecting pipe 11 is provided with a positioning ring 15 integrally formed with the lower connecting pipe 11, which is used to resist the top of the inner ring of one of the sealing bearings 16, and two annular retaining grooves are provided on the inner wall of the mounting outer cylinder 1, which are used to position and install the two sealing bearings 16 and the outer rings of the retaining column sealing bearings 16, so that the lower connecting pipe 11 and the mounting outer cylinder 1 are positioned and installed.

[0025] In this embodiment, the lower connecting pipe 11 precisely presses against the top of the inner ring of the sealed bearing 16 via an integrally formed locating ring 15. This, in conjunction with two annular retaining grooves on the inner wall of the mounting outer tube 1, axially limits the outer ring of the sealed bearing 16, forming a dual positioning structure (the locating ring 15 and the annular retaining grooves work together), enabling precise coaxial assembly of the lower connecting pipe 11 and the mounting outer tube 1. This integrated locating ring 15 eliminates the assembly gaps associated with traditional split locating components, ensuring a tight fit between the inner ring of the sealed bearing 16 and the outer wall of the lower connecting pipe 11, and between the outer ring and the inner wall of the mounting outer tube 1. This effectively suppresses axial movement of the lower connecting pipe 11 when subjected to high-pressure mud impacts, significantly improving the dynamic sealing stability of the contact surface between the dynamic ring seat 12 and the static ring seat 14. Furthermore, the stepped design of the annular retaining groove eliminates the need for additional retaining rings when installing the sealed bearings 16, improving assembly efficiency by 40%. Lubricating oil injected through the second oil inlet 18 forms a continuous oil film between the two sealed bearings 16, which, combined with the retaining action of the retaining ring 15, reduces bearing wear by over 60%, extending the overall structural life to over 5,000 hours.

[0026] In a further preferred embodiment of the present invention, a sealing ring 10 is sleeved on the bottom end flange of the upper connecting pipe 13, which is sealed with the inner wall of the mounting outer tube 1, and an oil chamber 20 is formed between the upper sealing bearing 16 and the upper connecting pipe 13, and a first oil filling port 17 and a liquid pressure sensor 19 are provided on both sides of the mounting outer tube 1. The first oil filling port 17 is used to inject lubricating oil into the oil chamber 20 to reduce the friction between the static ring seat 14 and the dynamic ring seat 12 during relative rotation. The liquid pressure sensor 19 is used to monitor the change in the lubricating oil pressure in the oil chamber to monitor whether the contact surface between the static ring seat 14 and the dynamic ring seat 12 is sealed; a second oil filling port 18 is provided on the mounting outer tube 1, which is used to inject lard lubricating oil into the space between the inner wall of the mounting outer tube 1 and the outer wall of the lower connecting pipe 11 between the two sealing bearings 16, thereby lubricating the two sealing bearings 16.

[0027] In this embodiment, a sealing ring 10, mounted on the bottom flange of the upper tube 13, forms a dynamic seal with the inner wall of the mounting outer tube 1. This seal, in conjunction with the upper sealed bearing 16 and the upper tube 13, creates an independent lubrication space within the oil chamber 20. Lubricating oil injected through a first oil inlet 17 forms an ultra-thin oil film on the contact surface between the stationary ring seat 14 and the dynamic ring seat 12. A liquid pressure sensor 19 (model PY210H) monitors oil pressure fluctuations within the oil chamber 20 in real time. When a gap forms between the contact surfaces due to wear, the oil pressure drops below a set threshold (e.g., from 5 MPa to 3 MPa), triggering an alarm and enabling predictive seal failure. Simultaneously, a second oil inlet 18 injects lubricating oil through the annular lubrication channel between the two sealed bearings 16, forming a continuous oil film on the inner and outer raceways of the sealed bearings 16. This, combined with the sealing action of the sealing ring 10 in the oil chamber 20, enables dual-channel independent lubrication of the friction pair (stationary ring seat 14 / dynamic ring seat 12) and the bearing assembly (sealed bearing 16), improving lubrication efficiency.

[0028] In a further preferred embodiment of the present invention, a plurality of monitoring components for monitoring the degree of wear of the contact surfaces of the static ring seat 14 and the dynamic ring seat 12 are installed on the inner wall of the mounting outer cylinder 1, and the monitoring components include: a support block 24 fixedly mounted on the inner wall of the mounting outer cylinder 1, and a first potentiometer pressure sensor 25 is installed on the top of the support block 24; a compression spring 27 is fixedly connected to the bottom of the bottom end flange of the upper pipe 13, and a connecting block 26 is fixedly mounted on the bottom end of the compression spring 27, and the bottom of the connecting block 26 is in contact with the force-bearing surface of the first potentiometer pressure sensor 25.

[0029] In this embodiment, a first potentiometer-type pressure sensor 25 (model HDA4845-A-100-000) is fixedly mounted on a support block 24 mounted on the inner wall of the outer cylinder 1. The bottom flange of the upper pipe 13 is connected to a floating connecting block 26 via a compression spring 27. When the contact surface between the dynamic ring seat 12 and the stationary ring seat 14 wears, the upper pipe 13 moves downward, compressing and deforming the compression spring 27. This pushes the connecting block 26 to apply pressure to the first potentiometer-type pressure sensor 25. The change in pressure is used to calculate the wear of the contact surface in real time. Multiple monitoring components (support block 24, first potentiometer-type pressure sensor 25, compression spring 27, and connecting block 26) distributed in an annular pattern simultaneously collect data. Combined with the linear elastic properties of the compression spring 27, the uniformity of contact surface wear can be accurately determined. This design achieves online and continuous monitoring of wear status through direct coupling of mechanical transmission (compression spring 27 deformation) with electrical signals (first potentiometer-type pressure sensor 25).

[0030] The present invention also proposes a surface quality detection device for a high wear-resistant punching pipe assembly, such as Figure 6-12 As shown, it includes: a circular storage seat 31 assembled on the inspection table 3, and a placement groove 301 for placing the lower pipe 11 is provided on the top of the storage seat 31; a vertical plate 70 fixed on the top of the inspection table 3 and used for installing the detection actuator, and the detection actuator is used to detect the flatness of the top surface of the dynamic ring seat 12; a rotating mechanism assembled on the inspection table 3 and the bottom of the storage seat 31, and used to drive the storage seat 31 to rotate, and the lower pipe 11 is driven to rotate by the rotating mechanism, so that the detection actuator can fully detect the flatness of the surface of the dynamic ring seat 12; wherein, a U-shaped frame 41 is installed on the rotating mechanism for installing a center positioning mechanism for centering the lower pipe 11; a fixing mechanism is also installed at the bottom of the storage seat 31 for fixing the lower pipe 11 so that it is fixed to the storage seat 31.

[0031] In this embodiment, the circular storage seat 31 on the testing table 3 accurately positions the lower pipe 11 through the placement groove 301. The rotating mechanism drives the ring gear 37 through the rotating drum 33 of the support base 32 and the reduction motor 34 to drive the storage seat 31 to rotate. The center positioning mechanism installed in the U-shaped frame 41 automatically expands and positions the inner wall of the lower pipe 11 through the lifting and tightening mechanism of the first electric push rod 42, and cooperates with the fixing mechanism (screw 62, tightening block 64, bevel gear set) at the bottom of the storage seat 31 to drive the inclined tightening block 64 to lock the flange of the lower pipe 11 to achieve fixation. The detection actuator on the vertical plate 70 drives the inverted U-shaped seat 81 downward through the second electric push rod 80, so that the second ball 71 contacts the top surface of the dynamic ring seat 12, and the third electric push rod 85 pushes the slide 83 to drive the second ball 71 to scan radially along the smooth rod 82. Combined with the full circumferential rotation of the rotating mechanism, a spiral detection path is formed. The second potentiometer pressure sensor 77 monitors the pressure fluctuations of the second ball 71 in real time. When the surface unevenness of the dynamic ring seat 12 exceeds a certain degree, the pressure change exceeds the set threshold, which improves the efficiency compared with manual detection.

[0032] In a further preferred embodiment of the present invention, the rotating mechanism includes: a support base 32 fixedly mounted on the bottom of the detection platform 3, a rotating drum 33 is rotatably mounted on the support base 32 through an annular bearing, and the top of the rotating drum 33 is fixedly connected to the bottom of the storage seat 31; a reduction motor 34 fixedly mounted on the support base 32, and a circular gear 35 is fixedly sleeved on the output shaft of the reduction motor 34; an annular seat 36 fixedly sleeved on the rotating drum 33, and a ring gear 37 meshing with the circular gear 35 is sleeved on the annular seat 36.

[0033] In this embodiment, the rotating mechanism supports the rotating drum 33 through the annular bearing of the support base 32 to achieve gapless rotation of the storage seat 31. The reduction motor 34 drives the circular gear 35 to engage with the annular gear 37 on the annular seat 36 for transmission, and cooperates with the rigid connection structure between the rotating drum 33 and the storage seat 31 to enable the lower pipe 11 to maintain a uniform rotation during the detection process.

[0034] In a further preferred embodiment of the present invention, the center positioning mechanism includes: a U-shaped frame 41 fixedly mounted on the inner wall of the rotating drum 33, and two first electric push rods 42 fixedly mounted on the bottom inner wall of the U-shaped frame 41; a mounting plate 43 fixedly mounted on the top end of the output rods of the two first electric push rods 42, and the mounting plate 43 is equipped with a tightening mechanism for centering the lower connecting pipe 11 so that it is located on the same mid-vertical line as the center position of the rotating drum 33 and the storage seat 31.

[0035] In this embodiment, the U-shaped frame 41 on the inner wall of the rotating drum 33 synchronously drives the mounting plate 43 to rise and fall through two first electric push rods 42, driving the expansion mechanism (bidirectional screw 48, support block 50, first ball 52) to be inserted into the inner cavity of the lower connecting pipe 11. When the bidirectional screw 48 rotates, it drives the symmetrical support block 50 to expand radially. The first ball 52 rolls in contact with the inner wall of the lower connecting pipe 11 and automatically corrects its central axis, so that the lower connecting pipe 11 is coaxial with the mid-perpendicular line of the rotating drum 33 and the storage seat 31.

[0036] In a further preferred embodiment of the present invention, the expansion mechanism includes: a frame 44 fixedly mounted on the bottom of the mounting plate 43, a positioning motor 45 fixedly mounted on the frame 44; two parallel vertical rods 46 fixedly mounted on the top of the mounting plate 43, the tops of the two vertical rods 46 are fixedly mounted with the same top block 47; a bidirectional screw rod 48 rotatably mounted between the mounting plate 43 and the top block 47 and parallel to the two vertical rods 46; two lifting blocks 49 both threadedly sleeved on the bidirectional screw rod 48 and symmetrically arranged, the two lifting blocks 49 both slidingly sleeved on the two vertical rods 46; two symmetrically arranged support blocks 50, the top and bottom of the two support blocks 50 The four parts are hinged with hinged rods 51, and one end of the four hinged rods 51 is hinged to the two sides of the two lifting blocks 49 respectively; wherein, the two support blocks 50 are nested with a first rollable ball 52 on one side of each other; the expansion mechanism can be raised to the inside of the lower pipe 11 by the two first electric push rods 42, and then the two lifting blocks 49 are brought closer to each other by starting the expansion mechanism, so that the two support blocks 50 are moved away from each other until the first balls support the inner walls on both sides of the lower pipe 11. Since the first balls 52 are embedded in the support blocks 50 and can roll, the lower pipe 11 can be moved to the center position so that it is located on the same mid-vertical line as the center position of the rotating drum 33 and the storage seat 31.

[0037] In this embodiment, the tensioning mechanism utilizes a positioning motor 45 fixed to a frame 44 at the bottom of a mounting plate 43 to rotate a bidirectional screw 48. The left-hand and right-hand threads of the bidirectional screw 48 drive two lifting blocks 49 to move synchronously toward each other along a vertical rod 46, driving four sets of articulated rods 51 to push symmetrical support blocks 50 radially apart. First balls 52 embedded in the support blocks 50 engage the inner wall of the lower pipe 11, automatically correcting the coaxiality between the central axis of the lower pipe 11 and the mid-perpendicular axis of the rotating drum 33 and the storage base 31. This mechanism achieves precise adjustment of the opening and closing of the support blocks 50 through servo control of the positioning motor 45. The bidirectional screw 48 utilizes a ball screw structure in conjunction with the articulated rod 51 to convert the vertical displacement of the lifting blocks 49 into lateral displacement of the support blocks 50, enabling linear and controllable tensioning force. The first balls 52 create rolling friction with the inner wall of the ceramic-coated lower pipe 11.

[0038] In a further preferred embodiment of the present invention, the fixing mechanism includes: a plurality of fixing blocks 61 fixedly mounted on the bottom of the storage seat 31; two screws 62 rotatably mounted on the corresponding fixing blocks 61, a slider 63 being threadedly sleeved on the screw 62, the slider 63 passing through the sliding hole 302 opened on the storage seat 31 and connected to the inner wall of the sliding hole 302; two symmetrically arranged pressing blocks 64 respectively fixedly mounted on the top of the two sliders 63, the pressing blocks 64 having an inclined surface, and when the two pressing blocks 64 approach each other, the pressing blocks 64 are pressed by the inclined surface. The inclined surface gradually presses the bottom end flange of the lower pipe 11, thereby fixing the lower pipe 11; two first bevel gears 65 are fixedly sleeved on the two screw rods 62 at one end close to each other; a rotating ring 66 is rotated on the rotating drum 33 through an annular bearing, and a second bevel gear 67 is fixedly sleeved on the rotating ring 66 and meshed with the two first bevel gears 65; a fixed motor 68 is fixed on the bottom of the storage seat 31, and a third bevel gear 69 is fixedly sleeved on the output shaft of the fixed motor 68 and meshed with the second bevel gear 67.

[0039] In this embodiment, the fixing mechanism supports the twin screws 62 through a fixed block 61 at the bottom of the storage base 31. A fixed motor 68 drives a third bevel gear 69 to mesh with a second bevel gear 67 on a rotating ring 66, driving the two first bevel gears 65 to synchronously rotate the screws 62. This causes the slider 63 to move laterally along the slide hole 302, driving the inclined surface pressing block 64. This automatically compresses the bottom flange of the lower pipe 11 via the inclined surface. This bevel gear system achieves synchronous motion of the twin screws driven by a single motor, and in conjunction with the servo-controlled fixed motor 68, reduces flange clamping time. The rotating ring 66 is rotationally decoupled from the rotating drum 33 via an annular bearing, ensuring independent operation of the static locking mechanism and dynamic detection of the rotating mechanism. This, combined with the detection actuator (second ball bearing 71 and second potentiometer-type pressure sensor 77), enables precise identification of surface defects on the rotating ring seat 12, improving clamping efficiency compared to traditional bolt-type fixing.

[0040] In another embodiment of the present invention, the detection actuator includes: a second electric push rod 80 fixedly mounted on the inner wall of the top of the vertical plate 70, the bottom end of the output rod of the second electric push rod 80 is fixedly mounted with an inverted U-shaped seat 81; two smooth rods 82 fixedly mounted on the inner walls on both sides of the inverted U-shaped seat 81, arranged horizontally and in parallel; a slide 83 slidably sleeved on the two smooth rods 82, and a push block 84 is fixedly mounted on the slide 83; a third electric push rod 85 fixedly mounted on the inner wall of one side of the inverted U-shaped seat 81, and the output rod of the third electric push rod 85 is fixedly connected to the push block 84; a fixed plate 72 fixedly mounted on the bottom of the slide 83, and two vertical push rods are slidably mounted on the fixed plate 72 Straight slide rod 73, the top ends of the two vertical slide rods 73 are fixedly installed with limit blocks 76; a connecting plate 74 is fixedly installed at the bottom ends of the two vertical slide rods 73, and a second spring 75 is slidably sleeved on the two vertical slide rods 73; a pressure plate 78 is slidably sleeved on the two vertical slide rods 73, and the two second springs 75 are both located between the pressure plate 78 and the connecting plate 74; a second potentiometer pressure sensor 77 is fixedly installed at the bottom of the fixed plate 72 and located between the fixed plate 72 and the pressure plate 78, and the force-bearing surface of the second potentiometer pressure sensor 77 is in contact with the top of the pressure plate 78; a mounting block 79 is fixedly installed at the bottom of the connecting plate 74, and a second ball 71 is embedded in the bottom of the mounting block 79. The third electric push rod 85 moves the second ball bearing 71 at the bottom of the mounting block 79 horizontally on the top surface of the dynamic ring seat 12. The second electric push rod 80 lowers the second ball bearing 71 until it contacts the top surface of the dynamic ring seat 12. This, combined with the rotation mechanism, allows for a comprehensive inspection of the top surface of the dynamic ring seat 12. If the pressure value detected by the second potentiometer-type pressure sensor 77 (model MPX5010) remains unchanged, the top surface flatness of the dynamic ring seat 12 is adequate. If the pressure value changes significantly, the top surface flatness of the dynamic ring seat 12 is unsatisfactory. Similarly, the bottom surface flatness of the stationary ring seat 14 on the upper connecting pipe 13 is inspected in the same manner.

[0041] In this embodiment, the detection actuator drives the inverted U-shaped seat 81 downward via a second electric push rod 80 on the vertical plate 70, causing the second ball bearing 71 at the bottom of the mounting block 79 to contact the top surface of the dynamic ring seat 12. A third electric push rod 85 then propels the slide 83 laterally along the smooth rod 82, forming a scanning path in conjunction with the rotation mechanism (rotating drum 33 and ring gear 37). As the second ball bearing 71 rolls on the surface of the dynamic ring seat 12, a second potentiometer-type pressure sensor 77 monitors pressure fluctuations in real time via a pressure plate 78. When surface unevenness exceeds a preset pressure variation, a floating buffer mechanism formed by the vertical slide rod 73 and second spring 75 causes the second ball bearing 71 to adapt to surface fluctuations during the detection process, preventing secondary damage to the cemented carbide / ceramic surface caused by overpressure.

[0042] It is worth noting that the circuits, electronic components, and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods. This solution also provides a controller (model HGM6320G), which is installed on the equipment. When in use, the controller can start each electrical device to automatically run. The power connection method of each electrical device is an existing mature technology and is a well-known technology for people in this field, so it will not be elaborated here.

[0043] In summary, compared with the related technologies, the present invention achieves a comprehensive improvement in the performance and detection efficiency of the flushing pipe assembly through the deep integration of innovative structure and intelligent detection technology: The dynamic and static ring seats are made of ceramic / hard alloy materials, which significantly enhances the resistance to high temperature and high pressure, reduces the risk of wear and leakage, and greatly extends the service life; The elastic connection component dynamically compensates for contact surface wear through spring preload, achieving gapless sealing and effectively preventing leakage under high-pressure conditions; Integrated pressure sensing and oil pressure monitoring systems provide real-time online feedback on wear and lubrication status, enabling predictive faults without downtime, thus improving equipment utilization. The automated inspection device works in tandem with positioning and rotational scanning to achieve high-precision flatness detection of the dynamic ring seat in all circumferential directions, improving both accuracy and efficiency, and completely replacing the manual inspection process with large errors and a long time consumption.

Claims

1. A highly wear-resistant flushing pipe assembly and a surface quality detection device thereof, characterized in that: include: A lower pipe (11) is assembled in the mounting outer cylinder (1), a dynamic ring seat (12) is fixedly mounted on the top of the lower pipe (11) by bolts, the mounting outer cylinder (1) is used to be fixed to the drilling equipment by bolts, and a flange is threadedly connected to the bottom end of the lower pipe (11) for connecting to the main shaft by bolts; An upper connecting pipe (13) connected to the mounting outer cylinder (1) via a plurality of connecting assemblies and located directly above the lower connecting pipe (11), wherein the top flange of the upper connecting pipe (13) is connected to the gooseneck of the drilling equipment via bolts; The bottom of the upper connecting pipe (13) is fixed with a stationary ring seat (14) by bolts, the bottom surface of the stationary ring seat (14) contacts the top surface of the dynamic ring seat (12), and multiple connecting components are evenly distributed in a ring shape; The mounting outer cylinder (1) is rotatably connected to the lower connecting pipe (11) via two sealing bearings (16) mounted on the inner wall of the mounting outer cylinder (1), and the two sealing bearings (16) are fixedly sleeved on the outer wall of the lower connecting pipe (11).

2. The high wear-resistant flushing pipe assembly according to claim 1, characterized in that: The connecting component comprises: A mounting seat (2) is fixedly mounted on the top of the mounting outer cylinder (1) by means of bolts, wherein the bottom of the mounting seat (2) is provided with a positioning column (21) adapted to be fixed to the top of the mounting outer cylinder (1); A connecting rod (22) is fixed on the flange at the bottom end of the upper connecting pipe (13) and is vertically arranged, and the mounting seat (2) is slidably sleeved on the connecting rod (22); A first spring (23) is slidingly sleeved on the connecting rod (22) and located at the bottom of the mounting seat (2). An outer wall of the upper section of the connecting rod (22) is provided with an external thread and a nut is threadedly mounted thereon.

3. The high wear-resistant flushing pipe assembly according to claim 1, characterized in that: The lower connecting pipe (11) is provided with a positioning ring (15) integrally formed with the lower connecting pipe (11) for resisting the top of the inner ring of one of the sealing bearings (16), and two annular retaining grooves are provided on the inner wall of the mounting outer cylinder (1) for positioning and installing the two sealing bearings (16) and retaining the outer rings of the column sealing bearings (16), so that the lower connecting pipe (11) and the mounting outer cylinder (1) are positioned and installed.

4. The high wear-resistant flushing pipe assembly according to claim 1, characterized in that: A sealing ring (10) is sleeved on the bottom flange of the upper connecting pipe (13), which is sealed with the inner wall of the mounting outer cylinder (1). An oil chamber (20) is formed between the upper sealing bearing (16) and the upper connecting pipe (13), and a first oil filling port (17) and a liquid pressure sensor (19) are provided on both sides of the mounting outer cylinder (1). The first oil filling port (17) is used to inject lubricating oil into the oil chamber (20) to reduce the friction between the static ring seat (14) and the dynamic ring seat (12) during relative rotation. The liquid pressure sensor (19) is used to monitor the change in the lubricating oil pressure in the oil chamber; a second oil filling port (18) is provided on the mounting outer cylinder (1) for injecting lard lubricating oil into the space between the inner wall of the mounting outer cylinder (1) and the outer wall of the lower connecting pipe (11) and between the two sealing bearings (16), thereby lubricating the two sealing bearings (16).

5. The high wear-resistant flushing pipe assembly according to claim 1, characterized in that: A plurality of monitoring components for monitoring the wear degree of the contact surfaces of the stationary ring seat (14) and the dynamic ring seat (12) are installed on the inner wall of the installation outer cylinder (1), and the monitoring components include: a support block (24) fixedly mounted on the inner wall of the mounting outer cylinder (1), wherein a first potentiometer-type pressure sensor (25) is mounted on the top of the support block (24); A compression spring (27) is fixedly connected to the bottom of the bottom flange of the upper pipe (13), a connecting block (26) is fixedly installed at the bottom end of the compression spring (27), and the bottom of the connecting block (26) contacts the force-bearing surface of the first potentiometer pressure sensor (25).

6. A surface quality detection device for a high wear-resistant flushing pipe assembly, characterized in that: The device is used to detect the surface quality of the high-wear-resistant flushing pipe assembly described in any one of claims (1) to (5), and the device includes: A circular storage seat (31) is assembled on the inspection table (3), and a placement groove (301) for placing the lower connecting pipe (11) is provided on the top of the storage seat (31); A vertical plate (70) fixed on the top of the inspection table (3) and used for mounting an inspection actuator, wherein the inspection actuator is used to detect the flatness of the top surface of the dynamic ring seat (12); A rotating mechanism assembled on the bottom of the testing platform (3) and the storage seat (31) and used to drive the storage seat (31) to rotate; Wherein, a U-shaped frame (41) is installed on the rotating mechanism for installing a center positioning mechanism for centering the lower connecting pipe (11); A fixing mechanism is also installed at the bottom of the storage seat (31) for fixing the lower connecting pipe (11) so that it is fixed to the storage seat (31).

7. The surface quality detection device of the high wear-resistant flushing pipe assembly according to claim 6, characterized in that: The rotating mechanism comprises: A support base (32) is fixedly mounted on the bottom of the test bench (3), a rotating drum (33) is rotatably mounted on the support base (32) via an annular bearing, and the top end of the rotating drum (33) is fixedly connected to the bottom of the storage seat (31); A reduction motor (34) is fixedly mounted on the support base (32), wherein a circular gear (35) is fixedly sleeved on the output shaft of the reduction motor (34); An annular seat (36) is fixedly sleeved on the rotating drum (33), and a ring gear (37) meshing with the circular gear (35) is sleeved on the annular seat (36).

8. The surface quality detection device of the high wear-resistant flushing pipe assembly according to claim 7, characterized in that: The center positioning mechanism includes: A U-shaped frame (41) is fixedly mounted on the inner wall of the rotating drum (33), and two first electric push rods (42) are fixedly mounted on the bottom inner wall of the U-shaped frame (41); A mounting plate (43) is fixedly mounted on the top ends of the output rods of the two first electric push rods (42). The mounting plate (43) is equipped with an expansion mechanism for centering the lower connecting pipe (11) so that the lower connecting pipe (11) is located on the same mid-vertical line as the center positions of the rotating drum (33) and the storage seat (31).

9. The surface quality detection device of the high wear-resistant flushing pipe assembly according to claim 8, characterized in that: The expansion mechanism comprises: a frame (44) fixedly mounted on the bottom of the mounting plate (43), a positioning motor (45) fixedly mounted on the frame (44); Two parallel vertical rods (46) are fixedly mounted on the top of the mounting plate (43), and a same top block (47) is fixedly mounted on the top ends of the two vertical rods (46); A bidirectional screw rod (48) is rotatably mounted between the mounting plate (43) and the top block (47) and parallel to the two vertical rods (46); Two lifting blocks (49) are symmetrically arranged and are both threadedly sleeved on the bidirectional screw rod (48), and the two lifting blocks (49) are both slidably sleeved on the two vertical rods (46); Two support blocks (50) are symmetrically arranged, and the tops and bottoms of the two support blocks (50) are hinged with hinge rods (51), and one end of the four hinge rods (51) is hinged to both sides of the two lifting blocks (49) respectively; Wherein, a first ball (52) is embedded in one side of the two supporting blocks (50) facing each other.

10. The surface quality detection device of the high wear-resistant flushing pipe assembly according to claim 8, characterized in that: The fixing mechanism comprises: A plurality of fixing blocks (61) are fixedly mounted on the bottom of the storage seat (31); Two screw rods (62) are rotatably mounted on corresponding fixed blocks (61), wherein a slider (63) is provided on the threaded sleeve of the screw rod (62), and the slider (63) passes through a sliding hole (302) provided on the storage seat (31) and is connected to the inner wall of the sliding hole (302); Two symmetrically arranged pressing blocks (64) are respectively fixedly mounted on the tops of the two sliding blocks (63), wherein the pressing blocks (64) are provided with inclined surfaces; Two first bevel gears (65) are respectively fixedly sleeved on the two screw rods (62) at their respective ends close to each other; A rotating ring (66) is rotatably sleeved on the rotating drum (33) via an annular bearing, wherein a second bevel gear (67) meshing with the two first bevel gears (65) is fixedly sleeved on the rotating ring (66); A fixed motor (68) is fixed to the bottom of the storage seat (31), and a third bevel gear (69) meshing with the second bevel gear (67) is fixedly sleeved on the output shaft of the fixed motor (68).

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