A kind of anti-corrosion coating continuous pumping rod

Abstract

The invention discloses a coating anti-corrosion continuous sucker rod, belonging to the technical field of sucker rods. A coating anti-corrosion continuous sucker rod comprises a sucker rod body, one end surface of the sucker rod body is fixedly connected with a fixing column, and the surface of the fixing column is provided with an external thread. The coating anti-corrosion continuous sucker rod, under the action of a roller, a fixing frame and a second spring shaft, enables the sucker rod body to reciprocate smoothly in a tube, avoids the sucker rod body from tilting and eccentric wear on the inner wall of the tube, thereby prolonging the service life of the sucker rod body, does not need to frequently repair the sucker rod body, thereby improving the efficiency of oil extraction, and under the action of a first arc plate, a second arc plate, a moving block and an elastic spring, the vibration during the movement of the roller can be reduced, ensuring the stability of the roller during movement, thereby making the reciprocating movement of the sucker rod body more stable, further reducing the eccentric wear of the sucker rod body, thereby prolonging the service life of the sucker rod body.

Description

Technical Field

[0001] The invention relates to the technical field of sucker rods, and more particularly to a coating anti-corrosion continuous sucker rod. Background Art

[0002] The sucker rod is an important slender rod used to transmit power in the pumping well. It plays an irreplaceable role in the exploitation of oil fields. It is not only an indispensable part of the pumping system, but its design and material are directly related to the efficiency and cost of oil field exploitation. Modern sucker rods have adopted a variety of materials and designs to adapt to different oil field environments and improve economic benefits.

[0003] When installing the existing continuous sucker rod, multiple short sucker rods are usually connected and fixed with threads at the ends, and the sucker rod is lowered into the tubing of the oil well. The bottom end of the sucker rod is connected to the oil pump, and the top end of the sucker rod is fixedly connected to the bare rod. Through the up and down reciprocating motion of the bare rod, the sucker rod brings the oil pump at the lower end to extract underground oil. Since the tubing of the oil well cannot be installed to ensure that it is lowered completely vertically, when the sucker rod reciprocates, the movement trajectory of the sucker rod will deviate, which may cause friction between the middle section of the sucker rod and the inner wall of the tubing. Long-term use will cause the sucker rod to wear, which will affect the service life of the sucker rod, and further affect the efficiency of oil extraction. Impurities will condense on the inner wall of the oil pipe for a long time to form lumps. The presence of the lumps will also cause further wear of the sucker rod, resulting in a shortened service life of the sucker rod. Summary of the invention

[0004] The purpose of the present invention is to provide a coating anti-corrosion continuous pumping rod to solve the problems raised in the above background technology:

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A coated anti-corrosion continuous sucker rod comprises a sucker rod body, one end surface of the sucker rod body is fixedly connected to a fixing column, the surface of the fixing column is provided with an external thread, the outer surface of the fixing column is threadedly connected to a stabilizer, the interior of the stabilizer is provided with an internal thread matching the external thread, the stabilizer is threadedly connected to the fixing column through the matching of the external thread and the internal thread, the surface of the stabilizer is provided with a plurality of grooves, the interior of the grooves is rotatably connected to a rotating plate matching therewith, the inner side surface of the rotating plate is provided with a thread groove matching the external thread, the outer surface of the rotating plate is fixed A fixed frame is fixedly installed, and a rotating frame is rotatably connected to the surface of the fixed frame, and one end of the rotating frame is rotatably connected to a roller, and four movable grooves are correspondingly opened inside the roller, and the interiors of the four movable grooves are slidably connected with matching movable blocks, and the end surfaces of the four movable blocks are respectively fixedly connected with a first arc plate and a second arc plate, the two first arc plates and the two second arc plates are spaced apart from each other, and the bottom surfaces of both ends of the two second arc plates are fixedly connected with extended arc plates, and the surfaces of the two extended arc plates are respectively in contact with the bottom surfaces of the two first arc plates.

[0007] By adopting the above technical scheme, under the action of the roller, the fixing frame and the second spring shaft, the sucker rod body can smoothly reciprocate in the tube, avoiding the sucker rod body from tilting and eccentric wear against the inner wall of the tube, thereby extending the service life of the sucker rod body, eliminating the need for frequent maintenance of the sucker rod body, thereby improving the efficiency of oil extraction, and under the action of the first arc plate, the second arc plate, the moving block and the elastic spring, the vibration during the movement of the roller can be reduced, ensuring the stability of the roller movement, thereby making the reciprocating motion of the sucker rod body smoother, further reducing the eccentric wear of the sucker rod body, and thereby extending the service life of the sucker rod body.

[0008] Preferably, the number of the rotating racks is the same as the number of rotating plates, that is, six rotating racks can be divided into two groups, each group having three rotating racks, the lengths of the two groups of rotating racks are different, and the three short rotating racks are spaced apart from the three long rotating racks.

[0009] By adopting the above technical solution, the lengths of the two groups of rotating frames are different, so that the contact position between the roller and the inner wall of the tube is increased, thereby increasing the stable movement of the sucker rod body.

[0010] Preferably, a guide ring is fixedly connected to the bottom surface of the fixing column, a threaded hole is opened on the surface of the fixing column, and the threaded hole is located below the external thread; a ring sleeve matching the guide ring is fixedly installed on the bottom surface of the stabilizer, and an anti-loosening screw matching the threaded hole is provided on the surface of the ring sleeve.

[0011] By adopting the above technical solution, the anti-loosening screw matches the threaded hole, thereby enabling the stabilizer to be stably fixed on the surface of the fixing column.

[0012] Preferably, auxiliary wheels and auxiliary rotating wheels are fixedly mounted on the surface of the stabilizer, the number of the auxiliary wheels and the auxiliary rotating wheels is the same, and the number of the auxiliary wheels and the auxiliary rotating wheels is three, the positions of the auxiliary wheels correspond to the positions of the three short rotating frames, and the positions of the auxiliary rotating wheels correspond to the positions of the three long rotating frames.

[0013] By adopting the above technical solution, the auxiliary wheels and the auxiliary rotating wheels can ensure the normal movement of the roller when the roller is over-squeezed.

[0014] Preferably, a first spring shaft is provided on the top side surface of any one of the rotating plates, and the rotating plate is rotatably connected to the slot via the first spring shaft.

[0015] Preferably, a second spring shaft is provided on the top side surface of any one of the rotating frames, and the rotating frame is rotatably connected to the fixed frame via the second spring shaft; a rotating shaft is provided on the surface of any one of the rollers, and the roller is rotatably connected to the rotating frame via the rotating shaft.

[0016] Preferably, the top surface of the fixing column is fixedly connected with a limiting circular plate for limiting the stabilizer, the two ends of the sucker rod body are respectively fixedly connected with an external tube and an external thread, the interior of the external tube is provided with a thread matching the external thread, and the surface of the sucker rod body is correspondingly provided with a pipe clamp groove.

[0017] By adopting the above technical solution, the external pipe and the external thread are threadedly connected, so that each sucker rod body is connected into a whole.

[0018] Preferably, two guide rods are correspondingly arranged between the movable groove and the movable block, one end of the guide rod is fixedly connected to the end surface of the movable block, the other end of the guide rod is slidably connected to the inner wall of the movable groove, an elastic spring is sleeved on the surface of the guide rod, one end of the elastic spring is fixedly connected to the end surface of the movable block, the other end of the elastic spring is fixedly connected to the inner wall of the movable groove, and the movable block is elastically connected to the movable groove via the elastic spring.

[0019] By adopting the above technical solution, the guide rod is used to guide the movement of the moving block.

[0020] Preferably, the outer surface of the sucker rod body is provided with an anti-corrosion coating.

[0021] Preferably, a cleaning device is fixedly mounted on one end of any one of the rotating frames, and two scrapers are correspondingly fixedly mounted on the inner surface of the cleaning device, and the scrapers are in contact with the surfaces of the first curved plate and the second curved plate.

[0022] By adopting the above technical solution, when oil sludge adheres to the surfaces of the first curved plate and the second curved plate, as the roller rolls, the scraper can scrape off the oil sludge adhered to the surfaces of the first curved plate and the second curved plate, thereby reducing the load on the roller and further ensuring the stability of the roller during movement. The bottom surfaces of both ends of the second curved plate are fixedly connected with extended arc plates, and the surfaces of the two extended arc plates are respectively in contact with the bottom surfaces of the two first curved plates, thereby preventing oil sludge from entering the gap between the first curved plate, the second curved plate and the roller, thereby ensuring the normal operation of the roller.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) When the anti-corrosion continuous sucker rod with this coating is in use, when the entire sucker rod body is lowered into the tube, the fixed frame, rotating frame and roller are also lowered into the tube. At this time, the roller and rotating frame are in contact with the inner wall of the tube under the action of the second spring shaft. When oil is produced, the sucker rod body reciprocates in the tube and tilts. At this time, the roller is squeezed by the inner wall of the tube and moves. Under the action of the roller, the fixed frame and the second spring shaft, the sucker rod body reciprocates smoothly in the tube, avoiding the sucker rod body from tilting and eccentric wear against the inner wall of the tube, thereby extending the service life of the sucker rod body, eliminating the need for frequent maintenance of the sucker rod body, and thereby improving the efficiency of oil production.

[0025] 2) When the coated anti-corrosion continuous sucker rod is in use, impurities will condense on the inner wall of the oil pipe for a long time to form bulges, and the movement of the roller is squeezed by the bulges. At this time, the bulges first squeeze the first arc plate and the second arc plate. At this time, the movement of the first arc plate and the second arc plate carries the moving block to move into the moving groove to squeeze the elastic spring. Under the action of the first arc plate, the second arc plate, the moving block and the elastic spring, the vibration of the roller during movement can be reduced, ensuring the stability of the roller movement, thereby making the reciprocating motion of the sucker rod body smoother, further reducing the eccentric wear of the sucker rod body, and thus extending the service life of the sucker rod body.

[0026] 3) When the coated anti-corrosion continuous pumping rod is in use, when sludge adheres to the surfaces of the first curved plate and the second curved plate, as the roller rolls, the scraper can scrape off the sludge adhered to the surfaces of the first curved plate and the second curved plate, thereby reducing the load on the roller and further ensuring the stability of the roller during movement.

[0027] 4) When the coated anti-corrosion continuous sucker rod is in use, the bottom surfaces at both ends of the second arc plate are fixedly connected with extended arc plates, and the surfaces of the two extended arc plates are respectively in contact with the bottom surfaces of the two first arc plates, thereby preventing sludge from entering the gap between the first arc plate, the second arc plate and the roller, thereby ensuring the normal operation of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 A schematic diagram of the position of the external thread on the surface of the fixing column of the present invention;

[0030] Figure 3 It is a schematic diagram of the position structure of the fixing column and the limiting circular plate of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the stabilizer and the ring sleeve of the present invention;

[0032] Figure 5 It is a schematic diagram of the position structure of the stabilizer and the rotating plate of the present invention;

[0033] Figure 6 It is a schematic diagram of the auxiliary wheel and auxiliary rotating wheel position structure of the present invention;

[0034] Figure 7 It is a schematic diagram of the position structure of the rotating plate and the rotating frame of the present invention;

[0035] Figure 8 It is a schematic diagram of the position structure of the rotating frame and the roller of the present invention;

[0036] Fig. 9 It is a schematic diagram of the cleaning device and scraper position structure of the present invention;

[0037] Fig.10 It is a schematic diagram of the position structure of the roller and the moving block of the present invention;

[0038] Fig.11 It is a schematic diagram of the position structure of the first curved plate and the second curved plate of the present invention.

[0039] Explanation of the numbers in the figure: 1. sucker rod body; 2. fixing column; 3. external thread; 4. stabilizer; 5. internal thread; 6. slot; 7. rotating plate; 8. threaded groove; 9. fixing frame; 10. rotating frame; 11. roller; 12. moving groove; 13. moving block; 14. first arc plate; 15. second arc plate; 16. guide ring; 17. external pipe; 18. external thread; 19. pipe clamp slot; 20. limiting circular plate; 21. threaded hole; 22. ring sleeve; 23. anti-loosening screw; 24. auxiliary wheel; 25. auxiliary rotating wheel; 26. first spring shaft; 27. cleaning device; 28. second spring shaft; 29. ​​scraper; 30. rotating shaft; 31. guide rod; 32. elastic spring; 33. extended arc plate. DETAILED DESCRIPTION

[0040] Example 1

[0041] See also Figures 1 to 11A coated anti-corrosion continuous sucker rod comprises a sucker rod body 1, which is a continuous sucker rod coated with an anti-corrosion coating in the prior art. A fixing column 2 is fixedly connected to the surface of one end of the sucker rod body 1, and the fixing column 2 is used to install a stabilizer 4. An external thread 3 is provided on the surface of the fixing column 2, and the stabilizer 4 is threadedly connected to the outer surface of the fixing column 2. An internal thread 5 matching the external thread 3 is provided inside the stabilizer 4. The stabilizer 4 is threadedly connected to the fixing column 2 through the matching external thread 3 and the internal thread 5. The external thread 3 and the internal thread 5 are threadedly connected to each other, so that the stabilizer 4 is stably fixed to the surface of the fixing column 2. A plurality of grooves 6 are provided on the surface of the stabilizer 4, and a rotating plate 7 matching the groove 6 is rotatably connected inside the groove 6. The inner part of the rotating plate 7 A thread groove 8 matching the external thread 3 is provided on the side surface, a fixing frame 9 is fixedly installed on the outer surface of the rotating plate 7, a rotating frame 10 is rotatably connected to the surface of the fixing frame 9, one end of the rotating frame 10 is rotatably connected to a roller 11, four movable grooves 12 are correspondingly provided inside the roller 11, and the insides of the four movable grooves 12 are all slidably connected with movable blocks 13 matching therewith, the end surfaces of the four movable blocks 13 are respectively fixedly connected to the first arc plate 14 and the second arc plate 15, and the bottom surfaces of both ends of the second arc plate 15 are fixedly connected to extended arc plates 33, and the surfaces of the two extended arc plates 33 are respectively in contact with the bottom surfaces of the two first arc plates 14, thereby preventing sludge from entering the gap between the first arc plate 14 and the second arc plate 15 and the roller 11, thereby ensuring the roller 11 In order to realize normal operation, the two first arc plates 14 and the two second arc plates 15 are arranged at intervals from each other, and the bottom surfaces of both ends of the two second arc plates 15 are fixedly connected with extended arc plates 33, and the surfaces of the two extended arc plates 33 are respectively in contact with the bottom surfaces of the two first arc plates 14. When the whole sucker rod body 1 is lowered into the tube, the fixed frame 9, the rotating frame 10 and the roller 11 are also lowered into the tube. At this time, the roller 11 and the rotating frame 10 are in contact with the inner wall of the tube under the action of the second spring shaft 28. When oil is produced, the sucker rod body 1 reciprocates in the tube and tilts. At this time, the roller 11 is squeezed by the inner wall of the tube and moves. Under the action of the roller 11, the fixed frame 9 and the second spring shaft 28, the sucker rod body 1 reciprocates smoothly in the tube, avoiding the sucker rod body 1 is tilted and eccentrically worn with the inner wall of the tube, thereby extending the service life of the sucker rod body 1, and there is no need to frequently repair the sucker rod body 1, thereby improving the efficiency of oil extraction. The inner wall of the oil pipe will cause impurities to condense for a long time to form bulges, and the movement of the roller 11 is squeezed by the bulges. At this time, the bulges first squeeze the first curved plate 14 and the second curved plate 15. At this time, the first curved plate 14 and the second curved plate 15 move with the moving block 13 to move into the moving groove 12 to squeeze the elastic spring 32. Under the action of the first curved plate 14, the second curved plate 15, the moving block 13 and the elastic spring 32, the vibration of the roller 11 during the movement process can be reduced, ensuring the stability of the roller 11 during movement, thereby making the reciprocating motion process of the sucker rod body 1 more stable.The eccentric wear of the sucker rod body 1 is further reduced, thereby extending the service life of the sucker rod body 1.

[0042] The number of rotating frames 10 is the same as the number of rotating plates 7. There are six rotating frames 10. The six rotating frames 10 can be divided into two groups. Each group has three rotating frames 10. The lengths of the two groups of rotating frames 10 are different. The three short rotating frames 10 are arranged at intervals with the three long rotating frames 10, so that the contact position between the roller 11 and the inner wall of the tube is increased, thereby increasing the stable movement of the sucker rod body 1.

[0043] The bottom surface of the fixing column 2 is fixedly connected with a guide ring 16, and the surface of the fixing column 2 is provided with a threaded hole 21, and the threaded hole 21 is located below the external thread 3. The bottom surface of the stabilizer 4 is fixedly installed with a ring sleeve 22 matching the guide ring 16, and the surface of the ring sleeve 22 is provided with an anti-loosening screw 23 matching the threaded hole 21, and the anti-loosening screw 23 matches the threaded hole 21, so that the stabilizer 4 is stably fixed on the surface of the fixing column 2.

[0044] Auxiliary wheels 24 and auxiliary rotating wheels 25 are fixedly mounted on the surface of the stabilizer 4, and the number of the auxiliary wheels 24 and the auxiliary rotating wheels 25 are the same, and the number of the auxiliary wheels 24 and the auxiliary rotating wheels 25 are both three. The position of the auxiliary wheels 24 corresponds to the position of the three short rotating frames 10, and the position of the auxiliary rotating wheels 25 corresponds to the position of the three long rotating frames 10. The function of the auxiliary wheels 24 and the auxiliary rotating wheels 25 is to ensure the normal movement of the roller 11 when the roller 11 is excessively squeezed.

[0045] A first spring shaft 26 is disposed on the top side surface of any rotating plate 7 , and the rotating plate 7 is rotatably connected to the slot 6 via the first spring shaft 26 .

[0046] A second spring shaft 28 is disposed on the top side surface of any rotating frame 10 , and the rotating frame 10 is rotatably connected to the fixing frame 9 via the second spring shaft 28 . A rotating shaft 30 is disposed on the surface of any roller 11 , and the roller 11 is rotatably connected to the rotating frame 10 via the rotating shaft 30 .

[0047] The top surface of the fixing column 2 is fixedly connected with a limiting circular plate 20 for limiting the stabilizer 4. The two ends of the sucker rod body 1 are respectively fixedly connected with an external tube 17 and an external thread 18. The inside of the external tube 17 is provided with a thread matching the external thread 18. The surface of the sucker rod body 1 is correspondingly provided with a pipe clamp groove 19. The external tube 17 and the external thread 18 are threadedly connected, so that each sucker rod body 1 is connected into a whole.

[0048] Two guide rods 31 are correspondingly arranged between the moving groove 12 and the moving block 13, one end of the guide rod 31 is fixedly connected to the end surface of the moving block 13, the other end of the guide rod 31 is slidably connected to the inner wall of the moving groove 12, an elastic spring 32 is sleeved on the surface of the guide rod 31, one end of the elastic spring 32 is fixedly connected to the end surface of the moving block 13, the other end of the elastic spring 32 is fixedly connected to the inner wall of the moving groove 12, the moving block 13 is elastically connected to the moving groove 12 through the elastic spring 32, and the guide rod 31 is used to guide the movement of the moving block 13.

[0049] The outer surface of the sucker rod body 1 is provided with an anti-corrosion coating. The pipe sleeve contains corrosive substances such as water, oxygen, and hydrogen sulfide. Hot-melt powder spraying technology is a more advanced anti-corrosion measure. It is through shot peening the surface of the sucker rod body 1, and then heating and evenly spraying a layer of hot-melt powder coating. After cooling, a solid anti-corrosion coating is formed. This coating can effectively isolate the sucker rod from direct contact with corrosive media, thereby protecting the sucker rod body 1 from chemical corrosion and physical wear.

[0050] The use steps of the present invention are as follows: when the coated anti-corrosion continuous sucker rod is in use, before the sucker rod body 1 is installed, the stabilizer 4 is inserted into the surface of the sucker rod body 1 from the direction of the external thread 18 by an external tool. When the stabilizer 4 moves toward the fixed column 2, the guide ring 16 will squeeze the rotating plate 7 to rotate, so that the fixed frame 9, the rotating frame 10 and the roller 11 rotate outward. When the rotating plate 7 matches the slot 6, the internal thread 5 and the thread groove 8 form a completed thread. At this time, the movement of the fixed frame 9, the rotating frame 10 and the roller 11 is completed, and the stabilizer 4 is rotated. At this time, the external thread 3 and the internal thread 5 match each other, and the stabilizer 4 is installed on the surface of the fixed column 2. When the top of the stabilizer 4 contacts the limiting circular plate 20, the anti-loosening screw 23 is in the position of the threaded hole 21. Correspondingly, the anti-loosening screw 23 is rotated into the threaded hole 21 at this time, and the stabilizer 4 is fixed to the surface of the fixing column 2 by the anti-loosening screw 23, and the external thread 18 of the sucker rod body 1 outside is installed on the external pipe 17 of the sucker rod body 1 inside the tube, so that multiple sucker rod bodies 1 are connected into a whole. When the installed integral sucker rod body 1 is lowered into the tube by the lowering equipment, the rotating frame 10 is squeezed by the external equipment, so that the fixing frame 9, the rotating frame 10 and the roller 11 are lowered into the tube. The roller 11 and the rotating frame 10 are fitted with the inner wall of the tube under the action of the second spring shaft 28. When oil is produced, the sucker rod body 1 reciprocates in the tube and tilts. At this time, the roller 11 is squeezed by the inner wall of the tube and moves. Under the action of the roller 11, the fixing frame 9 and the second spring shaft 28, the sucker rod body 1 can reciprocate smoothly in the tube, so as to avoid the sucker rod body 1 from tilting and eccentrically wearing against the inner wall of the tube. The inner wall of the oil tube will cause impurities to condense and form bulges for a long time, and the movement of the roller 11 is squeezed by the bulges. At this time, the bulges first squeeze the first curved plate 14 and the second curved plate 15. At this time, the first curved plate 14 and the second curved plate 15 move with the moving block 13 to move into the moving groove 12 to squeeze the elastic spring 32. Under the action of the first curved plate 14, the second curved plate 15, the moving block 13 and the elastic spring 32, the vibration of the roller 11 during the movement process can be reduced, so as to ensure the stability of the roller 11 during the movement, thereby making the reciprocating movement of the sucker rod body 1 It is more stable and further reduces the eccentric wear of the sucker rod body 1. When the sucker rod body 1 of the solution is lowered into the tube, the fixing frame 9, the rotating frame 10 and the roller 11 are also lowered into the tube. At this time, the roller 11 and the rotating frame 10 are in contact with the inner wall of the tube under the action of the second spring shaft 28. When the sucker rod body 1 reciprocates in the tube and tilts during oil production, the roller 11 is squeezed by the inner wall of the tube and moves. Under the action of the roller 11, the fixing frame 9 and the second spring shaft 28, the sucker rod body 1 reciprocates smoothly in the tube, avoiding the sucker rod body 1 from tilting and eccentric wear with the inner wall of the tube, thereby extending the service life of the sucker rod body 1, and there is no need to frequently repair the sucker rod body 1, thereby improving the efficiency of oil production;Impurities will condense on the inner wall of the oil pipe for a long time to form bumps, and the movement of the roller 11 is squeezed by the bumps. At this time, the bumps first squeeze the first arc plate 14 and the second arc plate 15. At this time, the first arc plate 14 and the second arc plate 15 move with the moving block 13 to move into the moving groove 12 to squeeze the elastic spring 32. Under the action of the first arc plate 14, the second arc plate 15, the moving block 13 and the elastic spring 32, the vibration of the roller 11 during the movement can be reduced, ensuring the stability of the roller 11 during movement, thereby making the reciprocating movement of the sucker rod body 1 more stable, further reducing the eccentric wear of the sucker rod body 1, and thus extending the service life of the sucker rod body 1. ;

[0051] Example 2

[0052] Grease will accumulate on the inner wall of the tube for a long time. When the roller 11 rolls on the inner wall of the tube, the grease will adhere to the surfaces of the first curved plate 14 and the second curved plate 15, which will increase the load of the roller 11. The problem can be solved by the following solution.

[0053] See also Figures 1 to 11 , the difference between the embodiment and the base is that a cleaning device 27 is fixedly installed at one end of any rotating frame 10, and two scrapers 29 are fixedly installed on the inner surface of the cleaning device 27, and the scrapers 29 are in contact with the surfaces of the first curved plate 14 and the second curved plate 15. When sludge adheres to the surfaces of the first curved plate 14 and the second curved plate 15, as the roller 11 rolls, the scrapers 29 can scrape off the sludge adhered to the surfaces of the first curved plate 14 and the second curved plate 15, thereby reducing the load of the roller 11 and further ensuring the stability of the roller 11 during movement. The bottom surfaces of both ends of the second curved plate 15 are fixedly connected with extended arc plates 33, and the surfaces of the two extended arc plates 33 are in contact with the bottom surfaces of the two first curved plates 14 respectively, thereby preventing sludge from entering the gap between the first curved plate 14 and the second curved plate 15 and the roller 11, thereby ensuring the normal operation of the roller 11.

[0054] Using steps of the present invention: When the coated anti-corrosion continuous sucker rod is in use, when sludge adheres to the surfaces of the first curved plate 14 and the second curved plate 15, as the roller 11 rolls, the scraper 29 can scrape off the sludge adhered to the surfaces of the first curved plate 14 and the second curved plate 15, thereby reducing the load on the roller 11 and further ensuring the stability of the roller 11 during movement. The bottom surfaces of both ends of the second curved plate 15 are fixedly connected with extended arc plates 33, and the surfaces of the two extended arc plates 33 are respectively in contact with the bottom surfaces of the two first curved plates 14, thereby preventing sludge from entering the gap between the first curved plate 14 and the second curved plate 15 and the roller 11, thereby ensuring the normal operation of the roller 11.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coated anti-corrosion continuous pumping rod, comprising a pumping rod body (1), characterized in that: One end surface of the sucker rod body (1) is fixedly connected to a fixing column (2), the surface of the fixing column (2) is provided with an external thread (3), the outer surface of the fixing column (2) is threadedly connected to a stabilizer (4), the interior of the stabilizer (4) is provided with an internal thread (5) matching the external thread (3), the stabilizer (4) is threadedly connected to the fixing column (2) by matching the external thread (3) and the internal thread (5), the surface of the stabilizer (4) is provided with a plurality of grooves (6), the interior of the grooves (6) is rotatably connected to a rotating plate (7) matching therewith, the inner side surface of the rotating plate (7) is provided with a thread groove (8) matching the external thread (3), the outer surface of the rotating plate (7) is fixedly mounted with a fixing frame (9), the The surface of the fixed frame (9) is rotatably connected to a rotating frame (10), one end of the rotating frame (10) is rotatably connected to a roller (11), four movable grooves (12) are correspondingly opened inside the roller (11), and the insides of the four movable grooves (12) are all slidably connected to movable blocks (13) matching therewith, and the end surfaces of the four movable blocks (13) are respectively fixedly connected to a first arc plate (14) and a second arc plate (15), the two first arc plates (14) and the two second arc plates (15) are arranged at intervals from each other, and the bottom surfaces of both ends of the two second arc plates (15) are fixedly connected to extended arc plates (33), and the surfaces of the two extended arc plates (33) are respectively in contact with the bottom surfaces of the two first arc plates (14); A second spring shaft (28) is provided on the top side surface of any one of the rotating racks (10), and the rotating rack (10) is rotatably connected to the fixed rack (9) via the second spring shaft (28); Two guide rods (31) are correspondingly arranged between the movable groove (12) and the movable block (13); one end of the guide rod (31) is fixedly connected to the end surface of the movable block (13); the other end of the guide rod (31) is slidably connected to the inner wall of the movable groove (12); an elastic spring (32) is sleeved on the surface of the guide rod (31); one end of the elastic spring (32) is fixedly connected to the end surface of the movable block (13); the other end of the elastic spring (32) is fixedly connected to the inner wall of the movable groove (12); the movable block (13) is elastically connected to the movable groove (12) via the elastic spring (32); A cleaning device (27) is fixedly mounted on one end of any one of the rotating racks (10), and two scrapers (29) are fixedly mounted on the inner surface of the cleaning device (27), and the scrapers (29) are in contact with the surfaces of the first curved plate (14) and the second curved plate (15).

2. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: The number of the rotating racks (10) is the same as the number of the rotating plates (7). The number of the rotating racks (10) is six. The six rotating racks (10) can be divided into two groups. The number of the rotating racks (10) in each group is three. The lengths of the two groups of rotating racks (10) are different. The three short rotating racks (10) are arranged at intervals from the three long rotating racks (10).

3. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: The bottom surface of the fixing column (2) is fixedly connected to a guide ring (16); a threaded hole (21) is provided on the surface of the fixing column (2); the threaded hole (21) is located below the external thread (3); a ring sleeve (22) matching the guide ring (16) is fixedly installed on the bottom surface of the stabilizer (4); and a locking screw (23) matching the threaded hole (21) is provided on the surface of the ring sleeve (22).

4. The anti-corrosion coated continuous pumping rod according to claim 2, characterized in that: Auxiliary wheels (24) and auxiliary rotating wheels (25) are respectively fixedly mounted on the surface of the stabilizer (4); the number of the auxiliary wheels (24) and the auxiliary rotating wheels (25) is the same, and the number of the auxiliary wheels (24) and the auxiliary rotating wheels (25) is three; the position of the auxiliary wheels (24) corresponds to the position of the three short rotating frames (10), and the position of the auxiliary rotating wheels (25) corresponds to the position of the three long rotating frames (10).

5. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: A first spring shaft (26) is provided on the top side surface of any one of the rotating plates (7), and the rotating plate (7) is rotatably connected to the slot (6) via the first spring shaft (26).

6. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: A limiting circular plate (20) for limiting the position of the stabilizer (4) is fixedly connected to the top surface of the fixing column (2), and an external tube (17) and an external thread (18) are fixedly connected to the two ends of the sucker rod body (1), respectively. A thread matching the external thread (18) is arranged inside the external tube (17), and a pipe clamp groove (19) is correspondingly arranged on the surface of the sucker rod body (1).

7. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: A rotating shaft (30) is provided on the surface of any one of the rollers (11), and the roller (11) is rotatably connected to the rotating frame (10) via the rotating shaft (30).

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