Sucker rod rotating device

Abstract

The utility model discloses a sucker rod rotating device which comprises a driving unit and a rotating body connected to the driving unit, the driving unit is used for driving the rotating body to rotate around the axis, a mounting hole is formed in the rotating body along the axis in a penetrating mode, a sucker rod penetrates through the mounting hole in a matched mode, and a limiting groove is formed in the top end of the rotating body. The mounting hole is located in the limiting groove; the limiting clamp is fixedly connected to the outer side wall of the sucker rod, and the limiting clamp and the limiting groove are clamped and embedded in a matched mode so that the sucker rod and the rotating body can be limited, and therefore the sucker rod and the rotating body can coaxially rotate; the limiting hoop fixed to the surface of the sucker rod can be stably clamped in the limiting groove in the top end of the rotating body in a matched mode to achieve matched limiting, the rotating body is driven by the driving unit to rotate, and the sucker rod can be driven to continuously rotate at a constant speed, so that the circumferential face of the rod wall of the sucker rod evenly shares original local abrasion; therefore, the service life of the sucker rod is prolonged and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to a sucker rod rotating device. Background Art

[0002] In the existing oil fields in my country, mechanical oil production with sucker rod pumps accounts for more than 80% of the total oil production. During the oil production process, due to the mutual movement between the oil pipe and the sucker rod, there is a common phenomenon of eccentric wear of the oil pipe and the sucker rod. For example, the patent document of Chinese Patent Publication No. CN207033363U raises the issue of eccentric wear.

[0003] The so-called eccentric wear refers to unidirectional, concentrated, and local wear. In the actual oil production process, the sucker rod or the oil pipe produces different degrees of geometric deformation, or the output fluid contains sand, or the sucker rod tilts in the oil pipe due to gravity in inclined wells and horizontal wells, which will cause eccentric wear of the oil pipe and sucker rod.

[0004] Eccentric wear of oil pipes and sucker rods will lead to a significant increase in the maintenance workload of oil wells and increase the cost of oil production. Utility Model Content

[0005] The utility model aims to provide a technical solution for a sucker rod rotating device to address the deficiencies in the prior art. The utility model can control the sucker rod to rotate continuously, thereby evenly dispersing the wear from points and lines on the rod wall to the circumference of the rod wall, so that the circumferential surface of the rod wall evenly shares the original local wear, thereby increasing the service life of the sucker rod and achieving the purpose of reducing the frequency and cost of maintenance work.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A sucker rod rotating device, comprising

[0008] A driving unit and a rotating body connected to the driving unit, wherein the driving unit is used to drive the rotating body to rotate around an axis;

[0009] The rotating body is provided with a mounting hole along the axis, and the mounting hole is used for the sucker rod to pass through; a limiting groove is provided at the top of the rotating body, and the mounting hole is located in the limiting groove;

[0010] It also includes a limiting clamp, which is fixedly connected to the outer side wall of the sucker rod. The limiting clamp cooperates with the limiting groove to achieve the limiting of the sucker rod and the rotating body, so that the sucker rod and the rotating body can rotate coaxially.

[0011] By adopting the above technical scheme, the sucker rod can be inserted into and passed through the mounting hole at the top of the rotating body. Under the action of the sucker rod's own weight, the limit clamp fixed to the surface of the sucker rod can stably cooperate and be embedded in the limit groove at the top of the rotating body to achieve cooperation and limitation. The rotating body rotates around the axis under the drive of the driving unit, so that the sucker rod that is limited in cooperation with the rotating body can rotate continuously at a uniform speed coaxially with the rotating body. The sucker rod that rotates continuously at a uniform speed can evenly share the original local eccentric wear through the circumferential surface of its rod wall, so as to increase the service life of the sucker rod and achieve the purpose of reducing the frequency and maintenance cost of maintenance work.

[0012] Furthermore, the driving unit includes a driving motor, and a first gear ring fixed relatively to the rotating body is provided on the outer peripheral side of the rotating body, and the first gear ring cooperates with the driving motor to realize the rotation of the rotating body.

[0013] Furthermore, a first slot is formed on the outer wall of the rotating body, and a second slot is formed on the inner wall of the first gear ring at a position corresponding to the first slot. A latch pin is movably connected between the first slot and the second slot, and the latch pin is engaged with the first slot and the second slot at the same time, thereby achieving the coordination and limiting of the rotating body and the first gear ring.

[0014] Furthermore, a reduction mechanism is connected between the first ring gear and the drive motor, and the reduction mechanism is used to reduce the rotation speed of the rotating body.

[0015] Furthermore, the reduction mechanism includes a motor shaft, a first transmission structure matched with the motor shaft, a second transmission structure meshed with the first transmission structure, and a third transmission structure meshed with the second transmission structure, and the third transmission structure is meshedly connected to the first gear ring.

[0016] Furthermore, the driving unit includes a box body, and the top end of the rotating body is exposed on the surface of the box body.

[0017] Furthermore, a sealing ring is connected between the rotating body and the box body.

[0018] Furthermore, a mounting groove is formed at the bottom of the box body, and the mounting groove is used for assembling the box body and the rope hanger.

[0019] Furthermore, the driving unit includes a tachometer and a display unit. The tachometer is used to detect the number of rotations of the rotating body and send the number of rotations information to the display unit for display.

[0020] Furthermore, the driving unit is provided with a controller, the controller is connected to a torque sensor, the torque sensor is used to detect the rotational torque of the rotating body, and the controller is used to receive data from the torque sensor and control the start or stop of the driving unit.

[0021] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. The utility model realizes continuous rotation of the sucker rod, so that the circumferential surface of the sucker rod wall evenly shares the original local eccentric wear, thereby increasing the service life of the sucker rod and achieving the purpose of reducing the frequency and cost of maintenance work;

[0023] 2. In the utility model, the rotating body and the first gear ring are assembled separately through a bayonet pin, which is convenient for subsequent maintenance and replacement;

[0024] 3. The driving unit in the utility model includes a tachometer and a display unit, and the display unit can intuitively display the number of rotations of the current sucker rod;

[0025] 4. The drive unit in the utility model can detect the rotational torque of the rotating body. When it is detected that the torque is too large, the drive unit will be controlled to stop running to avoid damage to the sucker rod caused by excessive torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 It is a schematic structural diagram of the sucker rod rotating device of the utility model from an oblique upper perspective;

[0028] Figure 2 This is a schematic structural diagram of the sucker rod rotating device of the utility model from an oblique downward perspective;

[0029] Figure 3 This is a schematic diagram of the structure of the rotating body and the speed reduction mechanism in the cooperation state of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the rotating body and the third transmission structure in the cooperation state of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the speed reduction mechanism of the utility model;

[0032] Figure 6 It is a structural schematic diagram of the rotating body of the utility model;

[0033] Figure 7 This is a schematic structural diagram of the first gear ring of the utility model;

[0034] Figure 8 It is a structural schematic diagram of the box body of the utility model;

[0035] In the figure: 1-rotating body; 11-end cover; 12-mounting hole; 13-limiting groove; 14-sealing ring groove; 15-sealing ring; 16-first gear ring; 17-first slot; 18-second slot;

[0036] 2-reduction box; 21-motor shaft; 22-first transmission structure; 23-second transmission structure; 24-third transmission structure;

[0037] 3-box; 31-power connector; 32-display screen; 33-installation slot; 34-cover plate; 35-bolt; 36-bearing; 37-through hole. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0041] Example 1

[0042] A sucker rod rotating device, comprising a rotating body 1 and a driving unit for driving the rotating body 1;

[0043] The driving unit includes a housing 3, and the housing 3 is provided with a through hole 37 along the axial direction. The through hole 37 is used for the rotating body 1 to pass through. Figure 8 As shown;

[0044] The driving unit includes a driving motor, which is arranged in the box 3 and is used to output a driving force to control the rotation of the rotating body 1;

[0045] The rotating body 1 passes through the through hole 37 and is rotatably mounted in the box body 3, with the end cover 11 at the top exposed on the surface of the box body 3. Figure 1 As shown;

[0046] The rotating body 1 is provided with a mounting hole 12 along the axis. Figure 1 , Figure 2 As shown, the mounting hole 12 is used for the sucker rod to pass therethrough;

[0047] A limiting groove 13 is provided on the surface of the end cover 11 of the rotating body 1;

[0048] The mounting hole 12 is located in the limiting groove 13. Figure 1 As shown;

[0049] In this embodiment, the limiting groove 13 is a cross-shaped groove. Figure 1 , Figure 3 As shown;

[0050] The outer wall of the sucker rod is fixedly connected to a limit clamp, which is adapted to the limit groove 13. When the sucker rod passes through the mounting hole 12, the limit clamp can be stably embedded in the limit groove 13 under the action of the sucker rod's own weight to cooperate with it for limiting.

[0051] At present, most sucker rods on the market have a deadweight of about 6 tons, and they can rely on their deadweight to stably fit the limit clamp into the limit groove 13;

[0052] Through the cooperation and limitation of the limiting clamp and the limiting groove 13, the sucker rod can rotate coaxially with the rotating body 1;

[0053] In this way, by driving the rotating body 1 to rotate, the circumferential surface of the sucker rod wall evenly shares the original local eccentric wear, so as to increase the service life of the sucker rod and achieve the purpose of reducing the frequency and cost of maintenance work.

[0054] According to the calculation formula of well repair cycle, service life multiple (N) = surface wear area ÷ line wear area, and the calculation is based on 1 / 4 of the circumference of the sucker rod as the line wear limit width, N = π * tubing inner diameter (D) ÷ 1 / 4π * tubing inner diameter (D) = 4D ÷ sucker rod diameter (d) ≈ ​​8.6 (times). It can be seen that making the circumferential surface of the sucker rod wall evenly share the original local eccentric wear can greatly increase the service life of the sucker rod and reduce the well repair cycle.

[0055] A first gear ring 16 is connected to the outer wall of the rotating body 1, and a speed reduction mechanism is connected between the first gear ring 16 and the driving motor. The driving force output by the driving motor is decelerated by the speed reduction mechanism and then transmitted to the first gear ring 16, thereby driving the rotating body 1 to rotate;

[0056] A first slot 17 is formed on the outer wall of the rotating body 1. Figure 6 As shown;

[0057] A second slot 18 is formed on the inner side wall of the first gear ring 16. Figure 7 As shown;

[0058] A latch pin is movably connected between the first latch slot 17 and the second latch slot 18, and the latch pin is engaged with the first latch slot 17 and the second latch slot 18 to achieve radial positioning of the rotating body 1 and the first gear ring 16;

[0059] The outer wall of the rotating body 1 is connected with a bearing 36, and the bearing 36 is detachably mounted on the rotating body 1 and is located above and below the first gear ring 16. Figure 3 , Figure 4 As shown, the bearing 36 has an axial limiting function on the first gear ring 16, and the bearing 36 can further ensure the stable rotation of the rotating body 1;

[0060] The design of separating the first gear ring 16 from the rotating body 1 can facilitate the subsequent maintenance and replacement of the first gear ring 16 .

[0061] In this embodiment, the speed reduction mechanism includes a motor shaft 21, which is connected to a driving motor for outputting driving force;

[0062] One end of the motor shaft 21 is connected with a first transmission structure 22, and the first transmission structure 22 is a cylindrical gear. Figure 5 As shown;

[0063] The speed reduction mechanism includes a second transmission structure 23, which is meshed with the first transmission structure 22. Figure 5 As shown;

[0064] The first transmission structure 22 and the second transmission structure 23 are located in the reduction box 2. Figure 3 As shown;

[0065] One axial end of the second transmission structure 23 is connected to the third transmission structure 24. Figure 5 Shown

[0066] The saw teeth on the peripheral side of the third transmission structure 24 can mesh with the first gear ring 16. Figure 3 , Figure 4 As shown;

[0067] The third transmission structure 24 transmits the driving force decelerated by the deceleration mechanism to the first gear ring 16 meshing therewith, thereby achieving the purpose of driving the rotating body 1 to rotate slowly and uniformly continuously;

[0068] In this embodiment, the rotating body 1 rotates three times a day under the action of the speed reduction mechanism.

[0069] The outer wall of the rotating body 1 is provided with a sealing ring groove 14. Figure 3 , Figure 6 As shown;

[0070] A sealing ring 15 is arranged in the sealing ring groove 14. Figure 4 As shown;

[0071] The sealing ring 15 is located between the rotating body 1 and the box body 3 to seal the joint between the two.

[0072] In this embodiment, the driving motor is a DC24 low-voltage brushless direct current motor.

[0073] A power connector 31 is provided on one side of the box body 3. Figure 2 As shown, the power connector 31 is used to connect to an external power source to supply power to the drive motor;

[0074] In this embodiment, the power connector 31 is an aviation plug-in.

[0075] The bottom of the box body 3 is provided with a mounting groove 33. Figure 2 As shown;

[0076] The shape of the mounting groove 33 matches the rope hanger, and the box body 3 can be mounted on the rope hanger through the mounting groove 33 .

[0077] The driving unit includes a tachometer and a display unit, and the display unit is a display screen 32;

[0078] The display screen 32 is provided on one side of the box body 3, such as Figure 8 As shown;

[0079] The display screen 32 is embedded in the surface of the box body 3, and a transparent glass flush with the surface of the box body 3 is provided on the outside thereof for protecting the display screen 32;

[0080] The tachometer is connected to the display screen 32 for data transmission. The tachometer can continuously monitor the number of rotations of the rotating body 1 and send the number of rotations information to the display screen 32 for display, so as to intuitively display the current number of rotations of the sucker rod.

[0081] The drive unit is provided with a controller, which is used to control the operation and stop of the drive motor;

[0082] The controller is connected to a torque sensor, which is used to detect the rotation torque of the rotating body 1 and send it to the controller;

[0083] When the controller determines that the current rotation torque of the rotating body 1 exceeds the rated torque set by the drive motor, the controller will control the drive motor to cut off the power, thereby protecting the sucker rod from being twisted off and damaged.

[0084] In this embodiment, a cover plate 34 is movably provided on the surface of the box body 3, and the cover plate 34 is detachably connected to the box body 3 by bolts 35. Figure 2 As shown;

[0085] The mechanism inside the box body 3 can be easily maintained by the movable cover plate 34 .

[0086] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A sucker rod rotating device, comprising: A driving unit and a rotating body (1) connected to the driving unit, wherein the driving unit is used to drive the rotating body (1) to rotate around an axis; Features: The rotating body (1) is provided with a mounting hole (12) along the axis, and the mounting hole (12) is used for a sucker rod to pass through; a limiting groove (13) is provided at the top end of the rotating body (1), and the mounting hole (12) is located in the limiting groove (13); It also comprises a limiting clamp, which is fixedly connected to the outer wall of the sucker rod. The limiting clamp cooperates with the limiting groove (13) to lock and lock to achieve the limiting of the sucker rod and the rotating body (1), so that the sucker rod and the rotating body (1) can rotate coaxially.

2. The sucker rod rotating device according to claim 1, characterized in that: The driving unit comprises a driving motor, and a first gear ring (16) fixed relatively to the outer peripheral side of the rotating body (1) is provided, and the first gear ring (16) cooperates with the driving motor to realize the rotation of the rotating body (1).

3. The sucker rod rotating device according to claim 2, characterized in that: A first clamping groove (17) is formed on the outer wall of the rotating body (1), a second clamping groove (18) is formed on the inner wall of the first gear ring (16) at a position corresponding to the first clamping groove (17), a clamping pin is movably connected between the first clamping groove (17) and the second clamping groove (18), and the clamping pin is engaged with the first clamping groove (17) and the second clamping groove (18) at the same time, so as to realize the coordination and limiting of the rotating body (1) and the first gear ring (16).

4. The sucker rod rotating device according to claim 2, characterized in that: A speed reduction mechanism is connected between the first gear ring (16) and the driving motor, and the speed reduction mechanism is used to reduce the rotation speed of the rotating body (1).

5. The sucker rod rotating device according to claim 4, characterized in that: The speed reduction mechanism comprises a motor shaft (21), a first transmission structure (22) matched with the motor shaft (21), a second transmission structure (23) meshed with the first transmission structure (22), and a third transmission structure (24) meshed with the second transmission structure (23); the third transmission structure (24) is meshedly connected with the first gear ring (16).

6. The sucker rod rotating device according to claim 1, characterized in that: The driving unit comprises a box body (3), and the top end of the rotating body (1) is exposed on the surface of the box body (3).

7. The sucker rod rotating device according to claim 6, characterized in that: A sealing ring (15) is connected between the rotating body (1) and the box body (3).

8. The sucker rod rotating device according to claim 6, characterized in that: The bottom of the box body (3) is formed with a mounting groove (33), and the mounting groove (33) is used for assembling the box body (3) and the rope hanger.

9. The sucker rod rotating device according to claim 1, characterized in that: The driving unit includes a tachometer and a display unit. The tachometer is used to detect the number of rotations of the rotating body and send the number of rotations information to the display unit for display.

10. The sucker rod rotating device according to claim 1, characterized in that: The drive unit is provided with a controller, the controller is connected to a torque sensor, the torque sensor is used to detect the rotational torque of the rotating body (1), and the controller is used to receive data from the torque sensor and control the start or stop of the drive unit.

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