CN220469878U

CN220469878U - Ultra-long stroke pumping unit based on carbon fiber continuous sucker rod

Info

Publication number: CN220469878U
Application number: CN202322345401.8U
Authority: CN
Inventors: 吴方方; 闫文辉; 马艳妮; 李钊寅; 蒋智超; 魏腾腾; 杨蕊; 熊辉; 蔡少敏; 黄俊杰
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-02-09
Anticipated expiration: 2033-08-30

Abstract

The ultra-long stroke pumping unit based on the carbon fiber continuous pumping rod comprises a frame, wherein a roller device for winding the carbon fiber pumping rod is arranged above the frame, a clamping device for driving the carbon fiber pumping rod to reciprocate up and down is arranged below the roller device, a driving chain wheel shaft of the clamping device is connected with a power output shaft of a planetary speed regulation reversing device, and a first transmission chain wheel shaft of the clamping device is connected with a power output shaft of a hydraulic energy storage system; when the pumping unit works, the clamping hydraulic cylinder drives the movable guide rail to be close to the fixed guide rail, so that the clamping bodies on the two guide rails clamp the carbon fiber pumping rod, and under the power support of the planetary speed regulation reversing device, each chain wheel drives the chain to rotate, and finally the carbon fiber pumping rod is driven to move up and down; the utility model solves the problems of short stroke, high stroke frequency and low working efficiency in low-yield and low-efficiency oil wells of the conventional oil pumping unit, and has the advantages of long stroke, low stroke frequency, compact structure and high efficiency.

Description

Ultra-long stroke pumping unit based on carbon fiber continuous sucker rod

Technical Field

The utility model relates to the technical field of petroleum drilling equipment, in particular to an ultra-long stroke pumping unit based on a carbon fiber continuous pumping rod.

Background

At present, a beam pumping unit is widely used in oil fields, and the beam pumping unit is mature in technology and is suitable for oil extraction under most conditions. The working process of the beam pumping unit is that a power machine, usually an electric motor or a diesel engine or a natural gas engine, transmits high-speed rotary motion to a speed reducer through a transmission belt, and after three-shaft two-stage speed reduction, the rotary motion is changed into up-and-down swing of a walking beam through a crank-link mechanism, a rope hanger hung on a horsehead drives a pumping pump plunger to do up-and-down reciprocating motion through a pumping rod, well liquid is pumped to the ground, the stroke is short and generally no more than 8 meters, the stroke frequency is high, along with the continuous geological exploration, a plurality of oil areas of large oil fields in China are in a high-water-content exploitation stage, the low-yield low-efficiency well number is continuously increased, the depth of the oil well is continuously increased, the height and the filling rate of the oil surface are continuously changed, and the conventional beam pumping unit is adopted, because the stroke is short and the stroke frequency is high, the time for oil to enter the pump is short, the full of the oil in the pumping unit is often caused, the phenomena of empty pumping and liquid impact are often generated, and the exploitation efficiency and the service life of equipment are greatly reduced.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide an ultra-long stroke pumping unit based on a carbon fiber continuous pumping rod, which is characterized in that a roller device and a clamping device are matched with the carbon fiber continuous pumping rod to work, so that the problems of short stroke, high stroke frequency, low working efficiency in a high water-containing well and a low-yield low-efficiency well in the later period of an oil field of a conventional pumping unit are solved, and the ultra-long stroke pumping unit has the advantages of long stroke, low stroke frequency, compact structure and high efficiency.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an ultra-long stroke beam-pumping unit based on carbon fiber continuous sucker rod, including frame 1, the top of frame 1 sets up the roller device 4 that is used for twining carbon fiber sucker rod 14, the below of roller device 4, install in frame 1 and be used for driving carbon fiber sucker rod 14 and do up-and-down reciprocating motion's clamping device 5, the initiative sprocket shaft 18 of clamping device 5 is connected with the power take-off shaft that is used for with power transmission and the planetary speed governing switching-over device 2 of switching-over, the first transmission sprocket shaft 25 of clamping device 5 is connected with the power take-off shaft that is used for providing the hydraulic pressure energy storage system 3 of drive and energy storage.

The roller device 4 comprises a roller support 6, a roller body 7 is arranged on the roller support 6, one end of the roller body 7 is connected with a large belt pulley 11, the large belt pulley 11 is connected with a small belt pulley 13 through a flat belt 12, a power input shaft of the small belt pulley 13 is connected with a power output shaft of a motor 10, pressing plates 9 are arranged in pairs around the roller body 7, and carbon fiber sucker rods 14 are wound between the pressing plates 9.

The clamping device 5 comprises a left bracket 15 and a right bracket 27 which are arranged at two sides of the carbon fiber sucker rod 14, a driving sprocket shaft 18 which is connected with a power output shaft of the planetary speed regulation reversing device 2 is arranged on the left bracket 15, a driving sprocket 16 and a driving large gear 17 are arranged on the driving sprocket shaft 18, the driving large gear 17 is meshed with a first transmission pinion 19, a first transmission sprocket 24 is arranged below the driving large gear 17 on the left bracket 15, a first tensioning hydraulic cylinder 23 is arranged between the driving large gear 17 and the first transmission sprocket 24, one end of the first tensioning hydraulic cylinder 23 is fixedly arranged on the left bracket 15, a power output end of the first tensioning hydraulic cylinder 23 is connected with a first sprocket bracket 22, a first tensioning sprocket 21 is arranged on the first sprocket bracket 22, a fixed guide rail 26 is fixedly arranged at the other side of the left bracket 15, and the driving large gear 17, the fixed guide rail 26, the first transmission sprocket 24 and the first tensioning sprocket 21 are coiled and connected through a first chain group 38;

the right bracket 27 is provided with a second transmission pinion 31 meshed with the first transmission pinion 19, the second transmission pinion 31 is meshed with a driven sprocket 28 installed through a driven sprocket shaft 29, the driven sprocket shaft 29 is also provided with a driven gearwheel 30, the lower part of the driven gearwheel 30 is provided with a second transmission sprocket 36, a second transmission guide rail 37 is arranged on the right bracket 27 between the driven gearwheel 30 and the second transmission sprocket 36, the other end of the movement guide rail 37 is connected with the power output end of a clamping hydraulic cylinder 35, the other side of the clamping hydraulic cylinder 35 is fixedly provided with a second tensioning hydraulic cylinder 34, the power output end of the second tensioning hydraulic cylinder 34 is connected with a second sprocket bracket 33, the second sprocket bracket 33 is provided with a second tensioning sprocket 32, and the driven gearwheel 30, the movement guide rail 37, the second transmission sprocket 36 and the second tensioning sprocket 32 are connected in a winding manner through a second chain 39;

the first chain set 38 and the second chain set 39 are respectively provided with a clamping body 20.

The first driving sprocket 24 is mounted on the left bracket 15 through a first driving sprocket shaft 25, and the power input end of the first driving sprocket shaft 25 is connected with the power output end of the hydraulic energy storage system 3.

The first chain set 38 and the second chain set 39 are each composed of three rows of links.

The clamping body 20 comprises a clamping block 44 arranged on a middle chain of the first chain group 38 or the second chain group 39, a friction block 43 is fixedly arranged on the upper portion of the clamping block 44, a fixed shaft 45 is arranged through the clamping block 44, bearings 40 are sleeved on two sides of the fixed shaft 45, and a circlip 41 is fixedly arranged on the outer side of the bearings 40.

The driving large gear 17, the first driving sprocket 24 and the first tensioning sprocket 21 are meshed with the first chain group 38; the driven bull gear 30, the second drive sprocket 36 and the second tensioning sprocket 32 are disposed in meshing engagement with a second chain set 39.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model uses the planetary speed-regulating reversing device as the transmission and reversing mechanism of the super-long stroke pumping unit power, so that the pumping unit is easier to complete stroke frequency adjustment, uses the clamping device as the power actuating mechanism of the pumping unit, so that the carbon fiber continuous pumping rod is more convenient to apply to the pumping unit, and uses the hydraulic energy storage system as the counterweight system of the pumping unit, thereby supplementing the power of the pumping unit during lifting and storing the energy of the pumping unit during the downstroke, realizing the secondary utilization of the energy, and effectively reducing the stroke loss and improving the pump efficiency and the system efficiency in the long-stroke and low-stroke oil extraction mode.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of the drum device of the present utility model.

Fig. 3 is a schematic structural view of the clamping device of the present utility model.

Fig. 4 is a schematic structural view of a clamping body in the clamping device of the present utility model.

In the figure: 1. a frame; 2. a planetary speed-regulating reversing device; 3. a hydraulic energy storage system; 4. a roller device; 5. a clamping device; 6. a roller bracket; 7. a roller body; 8. a pressing plate screw; 9. a pressing plate; 10. a motor; 11. a large belt wheel; 12. a flat belt; 13. a small belt wheel; 14. carbon fiber sucker rod; 15. a left bracket; 16. a drive sprocket; 17. a driving gearwheel; 18. a drive sprocket shaft; 19. a first drive pinion; 20. a clamping body; 21. a first tensioning sprocket; 22. a first sprocket support; 23. a first tensioning hydraulic cylinder; 24. a first drive sprocket; 25. a first drive sprocket shaft; 26. a fixed guide rail; 27. a right bracket; 28. a driven sprocket; 29. driven sprocket shafts; 30. a driven gearwheel; 31. a second drive pinion; 32. a second tensioning sprocket; 33. a second sprocket support; 34. a second tensioning hydraulic cylinder; 35. clamping a hydraulic cylinder; 36. a second drive sprocket; 37. a moving guide rail; 38. a first chain set; 39. a second chain set; 40. a bearing; 41. a circlip; 42. a screw; 43. a friction block; 44. a clamping block; 45. and a fixed shaft.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1, an ultra-long stroke pumping unit based on a carbon fiber continuous pumping rod comprises a frame 1, a roller device 4 for winding a carbon fiber pumping rod 14 is arranged above the frame 1, a clamping device 5 for driving the carbon fiber pumping rod 14 to reciprocate up and down is arranged below the roller device 4 in the frame 1, a driving sprocket shaft 18 of the clamping device 5 is connected with a power output shaft of a planetary speed regulation reversing device 2 for driving and reversing power, and a first transmission sprocket shaft 25 of the clamping device 5 is connected with a power output shaft of a hydraulic energy storage system 3 for providing driving and energy storage;

the power output shaft of the planetary speed regulation reversing device 2 is connected with the driving sprocket shaft 18 of the clamping device 5 through a coupling, the power output shaft of the hydraulic energy storage system 3 is connected with the first transmission sprocket shaft 25 of the clamping device 5 through a coupling, the planetary speed regulation reversing device 2 drives the power output shaft gear to rotate through different meshing states of a clutch, forward and reverse rotation of the power output shaft is achieved, speed regulation and reversing work of the planetary speed regulation reversing device 2 is completed, and the clamping device 5 is driven to complete up and down strokes of the pumping unit under the cooperation of the hydraulic energy storage system 3.

Referring to fig. 2, the roller device 4 comprises a roller bracket 6, a roller body 7 is mounted on the roller bracket 6, one end of the roller body 7 is connected with a large belt pulley 11, the large belt pulley 11 is connected with a small belt pulley 13 through a flat belt 12, a power input shaft of the small belt pulley 13 is connected with a power output shaft of a motor 10, pressing plates 9 are arranged in pairs around the roller body 7, the pressing plates 9 are fixed on the roller body 7 through pressing plate screws 8, and carbon fiber sucker rods 14 are wound between the pressing plates 9.

Referring to fig. 3, the clamping device 5 includes a left bracket 15 and a right bracket 27 configured at two sides of the carbon fiber sucker rod 14, a driving sprocket shaft 18 connected with a power output shaft of the planetary speed regulation reversing device 2 is mounted on the left bracket 15, a driving sprocket 16 and a driving gear wheel 17 are mounted on the driving sprocket shaft 18, the driving gear wheel 17 is meshed with a first transmission pinion 19, a first transmission sprocket 24 is mounted below the driving gear wheel 17 on the left bracket 15, the first transmission sprocket 24 is mounted on the left bracket 15 through a first transmission sprocket shaft 25, a power input end of the first transmission sprocket shaft 25 is connected with a power output end of the hydraulic energy storage system 3, a first tensioning hydraulic cylinder 23 is arranged between the driving gear wheel 17 and the first transmission sprocket 24, one end of the first tensioning hydraulic cylinder 23 is fixedly mounted on the left bracket 15, a power output end of the first tensioning hydraulic cylinder 23 is connected with a first sprocket bracket 22, a first tensioning sprocket 21 is mounted on the first sprocket bracket 22, a fixed guide rail 26 is fixedly arranged between the driving sprocket 17 and the first transmission sprocket 24, a fixed guide rail 26 is fixedly arranged at the other side of the left bracket 15, and the first tensioning sprocket wheel 24 is connected with a first tensioning set of wheels 38 through the first tensioning sprocket wheel 21;

the right bracket 27 is provided with a second transmission pinion 31 meshed with the first transmission pinion 19, the second transmission pinion 31 is meshed with a driven sprocket 28 installed through a driven sprocket shaft 29, the driven sprocket shaft 29 is also provided with a driven gearwheel 30, the lower part of the driven gearwheel 30 is provided with a second transmission sprocket 36, a second transmission guide rail 37 is arranged on the right bracket 27 between the driven gearwheel 30 and the second transmission sprocket 36, the other end of the movement guide rail 37 is connected with the power output end of a clamping hydraulic cylinder 35, the other side of the clamping hydraulic cylinder 35 is fixedly provided with a second tensioning hydraulic cylinder 34, the power output end of the second tensioning hydraulic cylinder 34 is connected with a second sprocket bracket 33, the second sprocket bracket 33 is provided with a second tensioning sprocket 32, and the driven gearwheel 30, the movement guide rail 37, the second transmission sprocket 36 and the second tensioning sprocket 32 are connected in a coiling manner through a second chain 39 group; the first chain set 38 and the second chain set 39 are respectively composed of three rows of chains, and the clamping bodies 20 are respectively arranged on the first chain set 38 and the second chain set 39.

The drive gearwheel 17, the first drive sprocket 24 and the first tensioning sprocket 21 are arranged in engagement with a first chain set 38.

The driven bull gear 30, the second drive sprocket 36 and the second tensioning sprocket 32 are disposed in meshing engagement with a second chain set 39.

Referring to fig. 4, the clamping body 20 includes a clamping block 44 disposed on a middle chain of the first chain set 38 or the second chain set 39, the clamping block 44 is provided with a fixed shaft 45 in a penetrating manner, bearings 40 are sleeved on two sides of the fixed shaft 45, a circlip 41 is fixedly disposed outside the bearings 40, a friction block 43 is fixedly mounted on an upper portion of the clamping block 44, and the friction block 43 is fixed on the clamping block 44 through a screw 42; during operation of the pumping unit, the bearings 40 on both sides of the clamping block 44 contact the rail and move on the rail.

The working principle of the utility model is as follows:

during the up stroke, the clamping hydraulic cylinder 35 in the clamping device 5 pushes the movable guide rail 37 to approach the fixed guide rail 26, so that the clamping bodies on the two guide rails clamp the carbon fiber pumping rod 14, meanwhile, the first tensioning chain wheel 21 and the second tensioning chain wheel 32 are expanded to two sides under the action of the first tensioning hydraulic cylinder 23 and the second tensioning hydraulic cylinder 34 to tension the first chain group 38 and the second chain group 39, the power output shaft of the planetary speed regulation reversing device 2 drives the driving chain wheel shaft 18 in the clamping device 5 to rotate, the driving large gear 17, the first driving chain wheel 24 and the first tensioning chain wheel 21 are driven to rotate, the driven large gear 30, the second driving chain wheel 36 and the second tensioning chain wheel 32 are driven to rotate, so that the first chain group 38 and the second chain group 39 are driven to rotate, the carbon fiber pumping rod 14 moves upwards under the action of friction force, at the moment, the motor 10 drives the small belt wheel 13 to rotate anticlockwise, the power is transmitted to the large belt 11 through the flat belt 12, the large belt 11 drives the roller body 7 to rotate, the carbon fiber pumping rod 14 is wound on the roller 7, the bidirectional motor in the energy storage system 3 rotates clockwise, the first driving chain wheel shaft 24 and the planetary speed regulation device rotates, the carbon fiber pumping rod 25 is driven to realize the common lifting operation, and the reversing operation is realized;

during the down stroke, the clamping hydraulic cylinder 35 in the clamping device 5 pushes the movable guide rail 37 to approach the fixed guide rail 26, so that the clamping bodies on the two guide rails clamp the carbon fiber sucker rod 14, the power output shaft of the planetary speed regulation reversing device 2 drives the driving sprocket shaft 18 of the clamping device 5 to rotate, and then drives the driving large gear 17, the first transmission sprocket 24 and the first tensioning sprocket 21 to rotate, and the driven large gear 30, the second transmission sprocket 36 and the second tensioning sprocket 32 to rotate, thereby driving the first chain group 38 and the second chain group 39 to rotate, and the carbon fiber sucker rod 14 moves downwards under the action of gravity and friction force, at this time, the motor 10 rotates clockwise, the motor 10 drives the small belt pulley 13 to rotate, power is transmitted to the large belt pulley 11 through the flat belt 12, the large belt pulley 11 drives the roller body 7 to rotate, the carbon fiber sucker rod 14 starts to descend from the roller 7, and the bidirectional hydraulic motor in the hydraulic energy storage system 3 starts to rotate anticlockwise under the driving of the first transmission sprocket shaft 25, and the air bag type energy accumulator stores energy, so that the down stroke operation is realized.

Claims

1. The utility model provides an overlength stroke beam-pumping unit based on continuous sucker rod of carbon fiber, including frame (1), its characterized in that, the top of frame (1) sets up roller device (4) that are used for winding up carbon fiber sucker rod (14), the below of roller device (4), install clamping device (5) that are used for driving carbon fiber sucker rod (14) and do up-and-down reciprocating motion in frame (1), driving sprocket axle (18) of clamping device (5) are connected with the power take-off shaft that is used for with power transmission and the planetary speed regulation reversing device (2) of reversing, first transmission sprocket axle (25) of clamping device (5) are connected with the power take-off shaft that is used for providing the hydraulic pressure energy storage system (3) of drive and energy storage.

2. The ultra-long stroke pumping unit based on the carbon fiber continuous pumping rod according to claim 1, characterized in that the roller device (4) comprises a roller bracket (6), a roller body (7) is installed on the roller bracket (6), one end of the roller body (7) is connected with a large belt wheel (11), the large belt wheel (11) is connected with a small belt wheel (13) through a flat belt (12), a power input shaft of the small belt wheel (13) is connected with a power output shaft of a motor (10), pressing plates (9) are arranged in pairs around the roller body (7), and the carbon fiber pumping rod (14) is wound between the pressing plates (9).

3. The ultra-long stroke pumping unit based on the continuous carbon fiber pumping rod according to claim 1, wherein the clamping device (5) comprises a left bracket (15) and a right bracket which are arranged at two sides of the continuous carbon fiber pumping rod (14), a driving sprocket shaft (18) connected with a power output shaft of the planetary speed regulation reversing device (2) is arranged on the left bracket (15), a driving sprocket (16) and a driving bull gear (17) are arranged on the driving sprocket shaft (18), a first transmission pinion (19) is meshed with the driving bull gear (17), the lower part of the driving bull gear (17), a first transmission sprocket (24) is arranged on the left bracket (15), a first tensioning hydraulic cylinder (23) is arranged between the driving bull gear (17) and the first transmission sprocket (24), one end of the first tensioning hydraulic cylinder (23) is fixedly arranged at one side of the left bracket (15), a power output end of the first tensioning hydraulic cylinder (23) is connected with a first sprocket bracket (22), a first tensioning sprocket (21) is arranged on the first sprocket bracket (22), a first transmission sprocket (17) and a first transmission sprocket (24) is meshed with the driving sprocket (26), a first transmission sprocket (26) is arranged between the driving bull gear (17) and the first sprocket (24), and the other side of the driving sprocket (26) is fixedly arranged on the left bracket (17) The first driving chain wheel (24) and the first tensioning chain wheel (21) are connected in a coiling way through a first chain group (38);

a second transmission pinion (31) meshed with the first transmission pinion (19) is arranged on the right support, a driven sprocket (28) arranged through a driven sprocket shaft (29) is meshed with the second transmission pinion (31), a driven big gear (30) is further arranged on the driven sprocket shaft (29), a second transmission sprocket (36) is arranged on the right support below the driven big gear (30), a movable guide rail (37) is arranged on the right support, the other end of the movable guide rail (37) is connected with a power output end of a clamping hydraulic cylinder (35), the other side of the clamping hydraulic cylinder (35) is fixedly provided with a second tensioning hydraulic cylinder (34), the power output end of the second tensioning hydraulic cylinder (34) is connected with a second sprocket support (33), a second tensioning sprocket (32) is arranged on the second sprocket support (33), and the driven big gear (30), the movable guide rail (37), the second transmission sprocket (36) and the second tensioning sprocket (32) are connected in a winding manner through a second chain (39);

the first chain group (38) and the second chain group (39) are respectively provided with a clamping body (20).

4. A carbon fiber continuous sucker rod based ultra-long stroke pumping unit as claimed in claim 3 wherein the first drive sprocket (24) is mounted on the left bracket (15) by a first drive sprocket shaft (25), and the power input shaft of the first drive sprocket shaft (25) is connected with the power output shaft of the hydraulic energy storage system (3).

5. A carbon fibre continuous sucker rod based ultra long stroke pumping unit as claimed in claim 3 wherein the first chain set (38) and the second chain set (39) are each comprised of three rows of chains.

6. A carbon fiber continuous sucker rod-based ultra-long stroke pumping unit according to claim 3, wherein the clamping body (20) comprises a clamping block (44) arranged on a middle chain of the first chain group (38) or the second chain group (39), a friction block (43) is fixedly arranged on the upper part of the clamping block (44), a fixed shaft (45) is penetrated and arranged by the clamping block (44), bearings (40) are sleeved on two sides of the fixed shaft (45), and elastic check rings (41) are fixedly arranged outside the bearings (40).

7. A carbon fibre continuous sucker rod based ultra long stroke pumping unit as claimed in claim 3 wherein said drive gearwheel (17), first drive sprocket (24) and first tensioning sprocket (21) are arranged in engagement with a first set of chains (38); the driven large gear (30), the second driving sprocket (36) and the second tensioning sprocket (32) are meshed with the second chain group (39).