A spring energy storage oil pumping unit

Abstract

The present invention relates to the technical field of oilfield extraction equipment, and discloses a spring energy storage oil pumping unit, including a mounting base, a tower base vertically arranged on the mounting base, a group of support rods arranged between the mounting base and the tower base, a driving source arranged on the mounting base, a driving chain sleeved on the output end of the driving source, a crankshaft arranged on the driving chain, the crankshaft slidingly arranged in a pulley frame, a roller arranged in a top cover, a load belt rotatably arranged on the roller, a counterweight block arranged at the bottom of one end of the load belt, and one end of the load belt is connected to an oil pump in the oilfield; a cooling component is arranged in the energy storage component; the spring energy storage component is used to improve the use of the driving source to realize energy storage and release; the cooling component is used to reduce the temperature of the spring energy storage component when in use. Compared with the prior art, the present application effectively solves the problem of heat accumulation during the operation of the energy storage system, prolongs the service life of the spring, and ensures the long-term stable operation of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield extraction equipment, in particular to a spring energy storage oil pumping unit. Background Art

[0002] The oil pump is a ground power equipment widely used in the oil extraction process. It lifts the crude oil from the well to the ground through mechanical devices. Traditional oil pumps usually rely on motors to directly drive the bare rod and the sucker rod to reciprocate up and down. However, this driving method consumes a lot of energy, especially during the upstroke and downstroke, the energy conversion efficiency is low, and the equipment is easily affected by mechanical shock and load fluctuations, resulting in increased wear of components and shortened equipment life.

[0003] In recent years, in order to meet the needs of energy conservation and consumption reduction in oil extraction, energy storage technology has gradually been introduced into the design of oil pumps. Among them, oil pumps based on spring energy storage have attracted attention due to their simple structure, easy maintenance and significant energy-saving effect. The spring energy storage device uses mechanical energy to store and release energy during the up and down strokes of the oil pump. The instantaneous power consumption of the motor is reduced by adjusting the elastic potential energy, and the energy utilization efficiency of the traditional oil pump is improved. However, the existing spring energy storage oil pumps still face some technical difficulties in practical applications. Under high load and long-term operation conditions, the springs are prone to fatigue damage, which affects the reliability of the equipment. Therefore, the present application discloses a spring energy storage oil pump to meet the requirements of modern oil fields for energy conservation, environmental protection and economy. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a spring energy storage oil pumping unit, which has the advantages of solving the problem of heat accumulation during the operation of the energy storage system, extending the service life of the spring, and ensuring the long-term stable operation of the equipment. It also solves a series of problems in the existing oil pumping units, such as the springs are prone to fatigue damage under high load and long-term operation conditions, affecting the reliability of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a spring energy storage oil pumping unit, comprising a mounting base, a tower base is vertically arranged on the mounting base, a group of support rods are arranged between the mounting base and the tower base, multiple groups of observation platforms are arranged on one side of the tower base, stairs are arranged between the observation platforms, a control console is arranged on one side of the observation platform, and a matching ladder is arranged on the observation platform; a driving source is arranged on the mounting base, a driving chain is sleeved on the output end of the driving source, a crank shaft is arranged on the driving chain, and the crank shaft is slidably arranged in a pulley frame, a spring energy storage component is arranged on one side of the mounting base; a cooling component is arranged in the energy storage component; the spring energy storage component comprises a buffer bottom plate arranged on one side of the mounting base, multiple groups of limit plates are arranged on the buffer bottom plate, the limit plates are symmetrically distributed on the edge of the buffer bottom plate, the limit plates are L-shaped structures, and the limit plates are A first buffer plate and a second buffer plate are slidingly arranged, and buffer springs are arranged between the first buffer plate and the second buffer plate and between the buffer bottom plate and the second buffer plate, wherein the size of the buffer spring between the first buffer plate and the second buffer plate is smaller than the size of the buffer spring between the buffer bottom plate and the second buffer plate; the spring energy storage assembly is used to improve the use of the driving source to realize energy storage and release; the cooling assembly is used to reduce the temperature of the spring energy storage assembly when in use; the cooling assembly includes a plurality of groups of buffer bases arranged on the buffer bottom plate and the second buffer plate, the buffer bases are distributed in an array, the buffer springs are arranged in the buffer base, a drive box is arranged in the center of the buffer base, a guide rod is arranged in the drive box, the guide rod is a retractable structure, a fixed disk is arranged on the guide rod, and a plurality of groups of synchronization rods are arranged at the bottom of the fixed disk, and the synchronization rods pass through the drive box.

[0006] Preferably, a top cover is provided on the top of the tower base, a roller is provided inside the top cover, a load belt is rotatably provided on the roller, a counterweight block is provided at the bottom of one end of the load belt, the pulley frame is provided at the bottom of the counterweight block, and one end of the load belt is connected to an oil pump in the oil field.

[0007] Preferably, the first buffer plate is in contact with the bottom of the counterweight.

[0008] Preferably, cooling oil is stored in the buffer base.

[0009] Preferably, the buffer spring is a stainless steel wire cylindrical helical compression spring.

[0010] Preferably, the distance of the synchronization rod in the drive box is smaller than the distance moved by the fixed disk.

[0011] Preferably, a pressure plate is provided at the bottom of the synchronization rod, and the pressure plate is in the shape of a trumpet with an opening facing downward.

[0012] Preferably, a plurality of through openings are provided at the bottom of the driving box, and the through opening arrays are distributed at the bottom of the driving box.

[0013] Compared with the prior art, the present invention provides a spring energy storage oil pumping unit, which has the following beneficial effects:

[0014] 1. The spring energy storage oil pumping unit, the driving source drives the crankshaft to rotate through the driving chain, the crankshaft is slidably arranged in the pulley frame, the driving pulley frame and the counterweight block form an up and down reciprocating motion, the gravity of the counterweight block is transmitted to the oil pump through the load belt, and the mechanical drive of the oil pumping operation is realized. In this process, the spring energy storage component completes the energy storage through the displacement of the counterweight block to compress the spring, and releases the elastic potential energy at an appropriate time to provide auxiliary driving force for the sucker rod, so as to achieve the purpose of reducing the power consumption of the driving source. At the same time, the energy storage component is cooled by the cooling component, which effectively avoids the performance degradation of the spring caused by high temperature, and ensures the stability and efficiency of the equipment operation; by adding the spring energy storage component, the effective storage and release of energy is realized, the energy consumption of the driving source is significantly reduced, and the energy utilization efficiency of the equipment is improved; the design of the cooling component effectively solves the problem of heat accumulation during the operation of the energy storage system, prolongs the service life of the spring, and ensures the long-term stable operation of the equipment;

[0015] 2. In the spring energy storage oil pumping unit, when the counterweight block moves back and forth under the drive of the driving source, when the counterweight block falls to the lowest point, that is, the bottom of the counterweight block contacts the first buffer plate, the first buffer plate bears the downward pressure of the counterweight block. In the process of the counterweight block gradually falling, the first buffer plate transmits the impact force to the second buffer plate and the buffer bottom plate step by step through the buffer spring, forming a graded buffer structure, wherein the buffer spring between the first buffer plate and the second buffer plate is smaller in size and provides a primary buffering effect, while the buffer spring between the buffer bottom plate and the second buffer plate is larger in size and assumes secondary buffering and load decomposition functions. At the same time, the elastic deformation characteristics of the buffer spring are used to gradually absorb and release the impact force, realizing the dual functions of energy storage and vibration buffering; through the graded buffering design, the impact force transmission during the movement of the counterweight block is effectively reduced, which plays a good protective role for various components of the equipment and significantly extends the service life of key components; when the counterweight block overcomes gravity and moves upward under the drive of the driving source, the stored energy is released through the buffer spring, which can assist the rise of the counterweight block, reduce the gravity strength that the driving source needs to overcome, and provide a strong guarantee for the efficient and stable operation of the spring energy storage oil pumping unit;

[0016] 3. The spring energy storage oil pumping unit stores energy through the buffer spring in the spring energy storage assembly when the first buffer plate contacts the counterweight block. At this time, when the first buffer plate falls along the limit plate under the pressure of the counterweight block, it can synchronously drive the buffer spring arranged on the buffer bottom plate and the second buffer plate to be compressed. At this time, the distance between the buffer bottom plate, the first buffer plate and the second buffer plate is reduced, so the guide rod is compressed and the spacing becomes shorter, so that the fixed plate drives the synchronous rod to move along the axis of the guide rod. In this process, the synchronous rod is synchronously driven to move in the fixed plate by the fixed plate. At the same time, the horn shape of the pressure plate can change the pressure of the drive box, so that the cooling oil in the buffer base is impacted by the pressure of the through-port, so that when the buffer spring enters the buffer base, it can be evenly in contact with the cooling oil, ensuring that the cooling oil can fully circulate around the buffer spring, thereby improving the cooling efficiency, effectively reducing the heat accumulation of the buffer spring due to long-term high-frequency operation, avoiding the performance degradation of the spring material due to overheating, and ensuring the stability and consistency of the cooling effect;

[0017] 4. The spring energy storage oil pumping unit effectively improves the durability and reliability of the spring energy storage component, adapts to the requirements of long-term and high-frequency operation of the oil pumping unit, reduces the frequency of replacement and maintenance, and significantly improves the economy and practicality of the equipment. The matching optimization of the buffer spring parameters and the actual working conditions makes the equipment run more smoothly, further reduces the impact of load fluctuations on the oil pumping unit, and provides reliable guarantee for the efficient and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal first-view stereoscopic structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the second viewing angle of the internal three-dimensional structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the spring energy storage assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the second buffer plate of the present invention;

[0023] Figure 6 It is a partially cutaway three-dimensional structural schematic diagram of the second buffer plate of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the buffer spring of the present invention;

[0025] Figure 8 It is a partially cutaway three-dimensional structural schematic diagram of the buffer base of the present invention;

[0026] Fig. 9 It is a partially cutaway three-dimensional structural schematic diagram of the drive box of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure and load structure of the buffer spring of the present invention;

[0028] Fig.11 This is a schematic diagram of the calculation for selecting the buffer spring of the present invention.

[0029] In the figure: 1. mounting base; 2. tower base; 3. support rod; 4. observation platform; 5. driving source; 6. driving chain; 7. pulley frame; 8. crank shaft; 9. counterweight; 10. load belt; 11. top cover; 12. stairs; 13. buffer bottom plate; 14. limit plate; 15. first buffer plate; 16. second buffer plate; 17. buffer base; 18. buffer spring; 19. guide rod; 20. fixed plate; 21. synchronization rod; 22. drive box; 23. through-hole; 24. pressure plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a spring energy storage oil pump.

[0032] In a typical implementation of the present application, Figure 1 - Fig.11As shown, a spring energy storage oil pumping unit includes a mounting base 1, a tower base 2 is vertically arranged on the mounting base 1, a group of support rods 3 are arranged between the mounting base 1 and the tower base 2, a plurality of observation platforms 4 are arranged on one side of the tower base 2, stairs 12 are arranged between the observation platforms 4, a control console is arranged on one side of the observation platform 4, and a matching ladder is arranged on the observation platform 4, a driving source 5 is arranged on the mounting base 1, a driving chain 6 is sleeved on the output end of the driving source 5, a crank shaft 8 is arranged on the driving chain 6, and the crank shaft 8 is slidably arranged on a pulley In the frame 7, a spring energy storage component is arranged on one side of the mounting base 1; a top cover 11 is arranged on the top of the tower base 2, a roller is arranged in the top cover 11, a load belt 10 is rotatably arranged on the roller, a counterweight block 9 is arranged at the bottom of one end of the load belt 10, the pulley frame 7 is arranged at the bottom of the counterweight block 9, and one end of the load belt 10 is connected to the oil pump in the oil field; a cooling component is arranged in the energy storage component; the spring energy storage component is used to improve the use of the driving source 5 to realize the storage and release of energy; the cooling component is used to reduce the temperature of the spring energy storage component when it is in use;

[0033] The driving source 5 drives the crank shaft 8 to rotate through the driving chain 6, and the crank shaft 8 is slidably set in the pulley frame 7, driving the pulley frame 7 and the counterweight block 9 to form an up and down reciprocating motion. This is the existing technology and will not be repeated here. The gravity of the counterweight block 9 is transmitted to the oil pump through the load belt 10 to realize the mechanical drive of the oil pumping operation. During this process, the spring energy storage component completes energy storage through the displacement compression spring of the counterweight block 9, and releases the elastic potential energy at an appropriate time to provide auxiliary driving force for the sucker rod, thereby achieving the purpose of reducing the power consumption of the driving source 5. At the same time, the energy storage component is cooled by the cooling component, which effectively avoids the performance degradation of the spring caused by high temperature, and ensures the stability and efficiency of the equipment operation; by adding the spring energy storage component, the effective storage and release of energy is realized, the energy consumption of the driving source 5 is significantly reduced, and the energy utilization efficiency of the equipment is improved; the design of the cooling component effectively solves the problem of heat accumulation during the operation of the energy storage system, extends the service life of the spring, and ensures the long-term stable operation of the equipment.

[0034] As a preferred implementation in this embodiment, refer to the attached Figure 3 - Fig. 9The spring energy storage assembly includes a buffer bottom plate 13 arranged on one side of the mounting base 1, and a plurality of limit plates 14 are arranged on the buffer bottom plate 13. The limit plates 14 are symmetrically distributed on the edge of the buffer bottom plate 13, and the limit plates 14 are L-shaped structures. A first buffer plate 15 and a second buffer plate 16 are slidably arranged in the limit plate 14, and the first buffer plate 15 is in contact with the bottom of the counterweight 9; a buffer spring 18 is arranged between the first buffer plate 15 and the second buffer plate 16 and between the buffer bottom plate 13 and the second buffer plate 16, and the buffer spring 18 is a stainless steel wire cylindrical helical compression spring; wherein the size of the buffer spring 18 between the first buffer plate 15 and the second buffer plate 16 is smaller than the size of the buffer spring 18 between the buffer bottom plate 13 and the second buffer plate 16;

[0035] When the counterweight 9 moves back and forth driven by the driving source 5, when the counterweight 9 falls to the lowest point, that is, the bottom of the counterweight 9 contacts the first buffer plate 15, the first buffer plate 15 bears the downward pressure of the counterweight 9. In the process of the counterweight 9 gradually falling, the first buffer plate 15 transmits the impact force to the second buffer plate 16 and the buffer bottom plate 13 step by step through the buffer spring 18, forming a graded buffer structure, wherein the buffer spring 18 between the first buffer plate 15 and the second buffer plate 16 is smaller in size and provides a primary buffering effect, while the buffer spring 18 between the buffer bottom plate 13 and the second buffer plate 16 is larger in size and bears secondary buffering and load The utility model has the function of load decomposition, and utilizes the elastic deformation characteristics of the buffer spring 18 to gradually absorb and release the impact force, thereby realizing the dual functions of energy storage and vibration buffering; through the graded buffering design, the impact force transmission during the movement of the counterweight block 9 is effectively reduced, which plays a good protective role on the various components of the equipment and significantly extends the service life of key components; when the counterweight block 9 moves upward against gravity driven by the driving source 5, the stored energy is released through the buffer spring 18, which can assist the rise of the counterweight block 9, reduce the gravity strength that the driving source 5 needs to overcome, and provide a strong guarantee for the efficient and stable operation of the spring energy storage oil pump.

[0036] As a preferred implementation in this embodiment, refer to the attached Figure 4 - Fig. 9The cooling assembly includes a plurality of buffer bases 17 arranged on the buffer bottom plate 13 and the second buffer plate 16, the buffer bases 17 are arranged in an array, and cooling oil is stored in the buffer bases 17; a buffer spring 18 is arranged in the buffer base 17, a drive box 22 is arranged in the center of the buffer base 17, a guide rod 19 is arranged in the drive box 22, the guide rod 19 is a retractable structure, a fixed disk 20 is arranged on the guide rod 19, a plurality of synchronization rods 21 are arranged at the bottom of the fixed disk 20, and the synchronization rods 21 pass through the drive box 22; a plurality of through openings 23 are provided at the bottom of the drive box 22, and the through openings 23 are arranged in an array at the bottom of the drive box 22; a pressure plate 24 is arranged at the bottom of the synchronization rod 21, and the pressure plate 24 is a trumpet-shaped with an opening downward; the distance of the synchronization rod 21 in the drive box 22 is less than the distance moved by the fixed disk 20;

[0037] When the first buffer plate 15 contacts the counterweight 9, energy is stored through the buffer spring 18 in the spring energy storage assembly. At this time, when the first buffer plate 15 falls along the limit plate 14 under the pressure of the counterweight 9, it can synchronously drive the buffer spring 18 arranged on the buffer bottom plate 13 and the second buffer plate 16 to be compressed. At this time, the distance between the buffer bottom plate 13, the first buffer plate 15 and the second buffer plate 16 is reduced, so the guide rod 19 is compressed and the spacing becomes shorter, so that the fixed plate 20 drives the synchronous rod 21 to move along the axis of the guide rod 19. In this process, the fixed plate 20 synchronously drives the synchronous rod 21 to move along the axis of the guide rod 19. The synchronous rod 21 is driven to move in the fixed plate 20. At the same time, the trumpet shape of the pressure plate 24 can change the pressure of the drive box 22, so that the cooling oil in the buffer base 17 is impacted by the pressure of the through-hole 23, so that the buffer spring 18 can be evenly in contact with the cooling oil when entering the buffer base 17, ensuring that the cooling oil can fully circulate around the buffer spring 18, thereby improving the cooling efficiency, effectively reducing the heat accumulation of the buffer spring 18 due to long-term high-frequency operation, avoiding the performance degradation of the spring material due to overheating, and ensuring the stability and consistency of the cooling effect.

[0038] Further, in the above scheme, refer to the attached Fig.10 ,pass , , , , , ,

[0039] Where p'=spring stiffness, D=spring median diameter, G=material shear modulus, C=winding ratio, C=D / d, K=curvature coefficient, d=material diameter, N=effective number of coils of the spring, = helix angle, F = working load of the spring, t = pitch, H 0 = Free height, H b= Compression height, taking the WCYJD12-6-40Z oil pump as an example, according to the rated lifting weight (tension difference) of 40kN, the acceleration is about 0.46m / s, the maximum spring load is (1+0.46)× 40kN =58.4kN, and 10 springs are used to work together, each spring load is 5.84kN, so according to the spring limit load Calculation, preliminary calculation and selection of springs should comply with Fig.11 The data of the buffer spring 18 in the drawing is much better than that of the tension spring (with a service life of about 10 4 ~10 6 times), the heavy-load life of the compression spring is longer, up to 10 6 ~10 7 This not only effectively improves the durability and reliability of the spring energy storage component, adapts to the requirements of long-term and high-frequency operation of the oil pump, but also reduces the frequency of replacement and maintenance, significantly improving the economy and practicality of the equipment. The matching optimization of the buffer spring 18 parameters and the actual working conditions makes the equipment run more smoothly, further reduces the impact of load fluctuations on the oil pump, and provides reliable guarantee for the efficient and stable operation of the equipment.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring energy storage oil pumping unit, comprising a mounting base (1), a tower base (2) being vertically arranged on the mounting base (1), characterized in that: A group of support rods (3) are arranged between the mounting base (1) and the tower base (2); a plurality of observation platforms (4) are arranged on one side of the tower base (2); stairs (12) are arranged between the observation platforms (4); a control console is arranged on one side of the observation platform (4); a matching ladder is arranged on the observation platform (4); a driving source (5) is arranged on the mounting base (1); a driving chain (6) is sleeved on the output end of the driving source (5); a crank shaft (8) is arranged on the driving chain (6); the crank shaft (8) is slidably arranged in a pulley frame (7); a spring energy storage assembly is arranged on one side of the mounting base (1); and a cooling assembly is arranged in the spring energy storage assembly; The spring energy storage component is used to improve the use of the driving source (5) to achieve energy storage and release; the spring energy storage component comprises a buffer bottom plate (13) arranged on one side of the mounting base (1); a plurality of groups of limit plates (14) are arranged on the buffer bottom plate (13); the limit plates (14) are symmetrically distributed on the edge of the buffer bottom plate (13); the limit plates (14) are L-shaped; a first buffer plate (15) and a second buffer plate (16) are slidably arranged inside the limit plate (14); a buffer spring (18) is arranged between the first buffer plate (15) and the second buffer plate (16) and between the buffer bottom plate (13) and the second buffer plate (16); the size of the buffer spring (18) between the first buffer plate (15) and the second buffer plate (16) is smaller than the size of the buffer spring (18) between the buffer bottom plate (13) and the second buffer plate (16); The cooling assembly is used to reduce the temperature of the spring energy storage assembly when in use; the cooling assembly comprises a plurality of groups of buffer bases (17) arranged on the buffer bottom plate (13) and the second buffer plate (16), the buffer bases (17) being arranged in an array, the buffer springs (18) being arranged in the buffer bases (17), a drive box (22) being arranged at the center of the buffer base (17), a guide rod (19) being arranged in the drive box (22), the guide rod (19) being a retractable structure, a fixed disk (20) being arranged on the guide rod (19), a plurality of groups of synchronization rods (21) being arranged at the bottom of the fixed disk (20), the synchronization rods (21) passing through the drive box (22).

2. A spring energy storage oil pumping unit according to claim 1, characterized in that: A top cover (11) is arranged on the top of the tower base (2), a roller is arranged inside the top cover (11), a load belt (10) is rotatably arranged on the roller, a counterweight (9) is arranged at the bottom of one end of the load belt (10), the pulley frame (7) is arranged at the bottom of the counterweight (9), and one end of the load belt (10) is connected to a pump in the oil field.

3. A spring energy storage oil pumping unit according to claim 2, characterized in that: The first buffer plate (15) is in contact with the bottom of the counterweight (9).

4. The spring energy storage oil pumping unit according to claim 1, characterized in that: Cooling oil is stored in the buffer base (17).

5. The spring energy storage oil pumping unit according to claim 2, characterized in that: The buffer spring (18) is a stainless steel wire cylindrical helical compression spring.

6. The spring energy storage oil pumping unit according to claim 3, characterized in that: The distance of the synchronization rod (21) in the drive box (22) is smaller than the distance moved by the fixed plate (20).

7. A spring energy storage oil pumping unit according to claim 6, characterized in that: A pressure plate (24) is provided at the bottom of the synchronization rod (21), and the pressure plate (24) is in the shape of a trumpet with an opening facing downward.

8. The spring energy storage oil pumping unit according to claim 7, characterized in that: The bottom of the drive box (22) is provided with a plurality of groups of through openings (23), and the through openings (23) are distributed in an array at the bottom of the drive box (22).

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