A composite balanced oil pumping unit with automatic balance adjustment

Abstract

The invention discloses a composite balanced oil pumping unit with automatic adjustment and balance, which relates to the technical field of oil pumping units and comprises: an oil inlet pump box, which is symmetrically and fastened to the top of a machine body with an oil guide pump box, and is connected to the top of the machine body through an adaptive component guide and a guide flow tube. With the cooperation of an adaptive dynamic balance adjustment component, the overall dynamic balance adjustment with multiple degrees of freedom is effectively realized, and the machine body can be more accurately adapted to the complex unbalanced state under different working conditions, and the unbalanced state change of the oil pumping unit can be quickly and accurately responded to, so that the adjustment action of the balance block can be automatically and accurately controlled according to the real-time operating state of the machine body, and accurate balance adjustment can be performed, thus realizing the automation and intelligence of the balance adjustment, providing a more comprehensive and sophisticated balance solution, improving the adjustment accuracy, flexibility and overall operating efficiency, increasing crude oil production, reducing the complexity and failure rate of the system, and reducing the maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of oil pumping units, in particular to a composite balanced oil pumping unit capable of automatically adjusting balance. Background Art

[0002] The pumping unit is a ground drive device of the rod pumping system in the oil field, commonly known as the "bowing machine". The common pumping unit, namely the walking beam pumping unit, is a traditional pumping equipment widely used in oil fields, including a base support assembly used to form the structural foundation of the pumping unit, and a walking beam assembly installed on the base support, wherein the walking beam assembly mainly includes a walking beam and a donkey head connected at one end, and the walking beam assembly moves up and down through a crank connecting rod mechanism connected thereto. On the walking beam of the existing pumping unit, a balancing device is generally provided at the end away from the donkey head to adjust the balance point of the walking beam.

[0003] At present, the balance design of traditional oil pumps is often based on experience and fixed parameters, which is difficult to adapt to different working conditions and load changes. As a result, during the production process of different oil wells, the load conditions of the oil pumps vary greatly, resulting in the inability to effectively adjust the balance system and increase the energy consumption of the oil pumps. Therefore, it is necessary to propose a composite balanced oil pump with automatic balance adjustment. Summary of the invention

[0004] The purpose of the present invention is to provide a composite balanced oil pumping unit with automatic adjustment balance, so as to solve the problem proposed in the above background technology that during the exploitation process of different oil wells, the load conditions of the oil pumping unit vary greatly, resulting in the inability to effectively adjust the balance system, leading to increased energy consumption of the oil pumping unit.

[0005] To achieve the above object, the present invention provides the following technical solution: a composite balanced oil pumping unit with automatic balance adjustment, comprising:

[0006] The oil inlet pump box and the oil guide pump box are symmetrically fastened to the top of the machine body, and are both connected through the adaptor component guide and the guide flow tube. When the machine body needs to increase the weight of the balance block, the built-in PLC controller on the machine body starts the oil inlet pump box and the oil guide pump box in sequence according to the needs, and transports the high-density liquid from the oil inlet pump box through the adaptor component guide and the guide flow tube to the inside of the balance block, so that the overall mass of the balance block is increased. On the contrary, when the weight needs to be reduced, the flow control valve hose is opened to return part of the liquid in the balance block to the oil guide pump box, thereby reducing the weight of the balance block;

[0007] Adaptive dynamic balance adjustment components, which are located at the top and bottom of the balance block to form a symmetrical installation arrangement, and are located inside the walking beam to form multiple groups of equally divided and equally spaced installation arrangements, for automatically adjusting balance parameters according to oil well conditions and pumping operation requirements;

[0008] The integrated sensor structure is composed of a load sensor, a displacement sensor, a speed sensor and a position angle sensor, and forms a signal connection with the data processing unit in the built-in PLC controller. It is installed at the connection between the walking beam, the donkey head and the balance block, and is used to enable the adaptive dynamic balance adjustment component to better adapt to changes in oil well conditions and pumping operation requirements according to the actual operating conditions of the machine body.

[0009] Preferably, a rocker is fastened to the top of the machine body, the rocker is hollow inside and has an open end away from the donkey head, and is used for up and down movement through a crank-connecting rod mechanism installed on the machine body connected thereto.

[0010] Preferably, an adjusting sealing rod is installed at the side end of the walking beam, which is embedded inside the side end of the walking beam and is used to adjust the internal sealing of the walking beam during operation by adjusting the sealing rod to prevent the external environment from affecting the internal structure of the walking beam.

[0011] Preferably, the adaptive dynamic balance adjustment component includes:

[0012] A control driver motor structure, a rotating gear, a track extension rack and a length track, wherein the track extension rack is fastened to the side wall surface of the length track, the control driver motor structure is slidably connected to the inside of the length track, the surface of the length track and the inner wall surface of the walking beam form a fast connection, and the output end of the control driver motor structure drives the rotating gear and the track extension rack to form a meshing connection.

[0013] Preferably, the side end of the control driver motor structure is fastened with a synchronous reinforcement rod, and the side end of the synchronous reinforcement rod is fastened with a synchronous position sliding seat, and the synchronous position sliding seat is located inside the length track to form a sliding connection, and a load-bearing stabilizing plate frame is fastened between the inner wall surfaces of the synchronous position sliding seat.

[0014] Preferably, three groups of pneumatic drive structures are arranged around the top surface of the supporting and stabilizing plate frame, and the output ends of the three groups of pneumatic drive structures are connected to a rotating joint, the side end of the rotating joint is hinged with a rotating rod, and the side end of the rotating rod is hinged with a rotating ball joint.

[0015] Preferably, an angle monitoring sensor is installed inside the rotating ball joint, and the angle monitoring sensor is signal-connected to a built-in PLC controller.

[0016] Preferably, a side end of the rotating ball joint is rotatably connected to a fine-motion pitch-adjusting rod, and a top of the fine-motion pitch-adjusting rod is tightly connected to a surface of a balancing block.

[0017] Preferably, a central balancing chamber is opened inside the balancing block, flow cavities are opened equally spaced on the outer circumference of the central balancing chamber, and a loop cavity is connected to the outer circumference of the central balancing chamber.

[0018] Preferably, the side of the loop cavity forms a control connection through a quick-connect connector and one end of a flow control valve hose.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the position adjustment of the balance block in the horizontal direction is achieved by utilizing the functions of the control driver motor structure, the rotating gear, the meshing of the rail rack, the synchronous position sliding seat, the length track and the synchronous reinforcing rod under the cooperation of the adaptive dynamic balance adjustment component. At the same time or after the horizontal position adjustment, the built-in PLC controller sends a control signal to the corresponding pneumatic drive structure according to the calculated angle adjustment amount of the rotating ball joint, so that the pneumatic drive structure, the rotating joint rotate, the rotating ball joint, and the micro-adjustment rod dynamically adjust the balance block, so that the balance block produces a small displacement or angle adjustment in the vertical direction, further optimizing the balancing effect. In this process, the angle monitoring sensor monitors the angle change of the rotating ball joint in real time and feeds back the data to The built-in PLC controller is used for precise closed-loop control and ensures that the rotating ball joint can accurately reach the preset angle position, realize precise fine-tuning of the balancing block, and effectively realize multi-degree-of-freedom dynamic balance adjustment as a whole. It can more accurately adapt to the complex unbalanced state of the machine body under different working conditions, and can quickly and accurately respond to the changes in the unbalanced state of the pumping unit, so that the adjustment action of the balancing block can be automatically and accurately controlled according to the real-time operating status of the machine body, and precise balance adjustment can be made, realizing the automation and intelligence of the balance adjustment, providing a more comprehensive and sophisticated balance solution, improving the adjustment accuracy, flexibility and overall operating efficiency, increasing crude oil production, reducing the complexity and failure rate of the system, and reducing maintenance costs.

[0021] 2. In the present invention, after the balancing block is adjusted, the machine body continues to run for a preset time period with the cooperation of the adaptive dynamic balancing adjustment component, and the integrated sensor structure is used to collect the operating data of the walking beam, the donkey head and the balancing block again, and the data are transmitted to the built-in PLC controller, so that the built-in PLC controller analyzes the new data and evaluates the effect of this balance adjustment. When it is found again that the adjusted balance state still does not meet the optimal requirements, for example, the vibration amplitude of the walking beam is still large or the load distribution is still not ideal, the built-in PLC controller will recalculate the balance adjustment parameters according to the new data, and send control instructions to the control driver motor structure and the pneumatic drive structure again, and further fine-tune the balancing block until the oil pump reaches a stable optimal balance state.

[0022] 3. In the present invention, by cooperating with the oil inlet pump box, the adaptor component guide, the oil guide pump box, the guide flow tube and the flow control valve hose, when an unbalanced situation is detected, such as uneven load distribution or large resistance to the movement of the walking beam, the built-in PLC controller will calculate the weight value and position parameters of the balance block that need to be adjusted according to the preset balance strategy. According to the calculation result, the built-in PLC controller starts the oil inlet pump box and the oil guide pump box respectively, so that the pump in the oil inlet pump box accurately transports the high-density liquid to the specified position inside the balance block through the adaptor component guide and the guide flow tube, so that the overall mass of the balance block is increased or redistributed according to the predetermined plan, so as to achieve the initial balance of the body. The step-by-step balance adjustment ensures that the walking beam can move up and down relatively smoothly, laying the foundation for the subsequent normal oil pumping operation. That is, when the weight of the balance block needs to be increased, the built-in PLC controller controls the oil inlet pump box to transport more liquid to the central balance chamber, and the liquid is redistributed between the central balance chamber and the flow cavity, so that the center of gravity and weight distribution of the balance block change to adapt to the new load conditions. Conversely, when the weight of the balance block needs to be reduced, the built-in PLC controller opens the valve on the flow control valve hose on the other side, so that part of the liquid in the central balance chamber and the flow cavity flows back to the oil guide pump box through the loop cavity and the flow control valve hose, thereby reducing the weight of the balance block and adjusting the center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the main view of a composite balanced oil pumping unit with automatic balance adjustment according to the present invention;

[0024] Figure 2 It is a schematic structural diagram of a side view of a composite balanced oil pumping unit with automatic balance adjustment according to the present invention;

[0025] Figure 3 It is a schematic diagram of the installation position structure of an adaptive dynamic balance adjustment component in a composite balanced oil pumping unit with automatic balance adjustment according to the present invention;

[0026] Figure 4 It is a structural schematic diagram of an adaptive dynamic balance adjustment component in a composite balanced oil pumping unit with automatic balance adjustment according to the present invention;

[0027] Figure 5 The invention relates to a composite balanced oil pumping unit with automatic adjustment of balance. Figure 4 A schematic diagram of the enlarged structure at point A;

[0028] Figure 6 It is a partial structural schematic diagram of an adaptive dynamic balance adjustment component in a composite balanced oil pumping unit with automatic balance adjustment according to the present invention;

[0029] Figure 7 This is a schematic diagram of the internal structure of a balancing block in a composite balanced oil pumping unit with automatic balancing adjustment according to the present invention;

[0030] Figure 8 The present invention is a schematic diagram of the operation of an adaptive dynamic balancing adjustment component driving a balancing block to adaptively adjust in an automatically balancing composite balanced oil pumping unit.

[0031] In the figure: 1. body; 2. walking beam; 3. adjusting sealing rod; 4. donkey head; 5. oil inlet pump box; 6. adaptive component guide; 7. oil guide pump box; 8. guide flow tube; 9. flow control valve hose; 10. adaptive dynamic balance adjustment component; 101. control driver motor structure; 102. rotating gear; 103. rail extension rack; 104. length track; 105. synchronous position sliding seat; 106. synchronous reinforcement rod; 107. load-bearing stable plate frame; 108. pneumatic drive structure; 109. rotating joint; 1090. rotating rod; 1091. rotating ball joint; 1092. micro-adjusting rod; 11. balancing block; 12. central balancing chamber; 13. loop cavity; 14. flow cavity. DETAILED DESCRIPTION

[0032] 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 implementation regulations described 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.

[0033] Embodiment 1: In the present invention, referring to Figure 1 - Figure 8 As shown: A composite balanced oil pumping unit with automatic balance adjustment, comprising:

[0034] The oil inlet pump box 5 and the oil guide pump box 7 are symmetrically fastened to the top of the body 1, and are both connected through the adaptor component guide 6 and the guide flow tube 8. When the body 1 needs to increase the weight of the balance block 11, the built-in PLC controller on the body 1 starts the oil inlet pump box 5 and the oil guide pump box 7 in sequence according to the needs, and transports the high-density liquid from the oil inlet pump box 5 through the adaptor component guide 6 and the guide flow tube 8 to the inside of the balance block 11, so that the overall mass of the balance block 11 is increased. On the contrary, when it is necessary to reduce the weight, the flow control valve hose 9 is opened to return part of the liquid in the balance block 11 to the oil guide pump box 7, thereby reducing the weight of the balance block 11;

[0035] The adaptive dynamic balance adjustment assembly 10 is located at the top and bottom of the balance block 11 to form a symmetrical installation arrangement, and is located inside the walking beam 2 to form multiple groups of equally divided and equally spaced installation arrangements, which are used to automatically adjust the balance parameters according to the oil well conditions and the requirements of the pumping operation;

[0036] The integrated sensor structure is composed of a load sensor, a displacement sensor, a speed sensor and a position angle sensor, and forms a signal connection with the data processing unit in the built-in PLC controller. It is installed at the connection between the walking beam 2, the donkey head 4 and the balance block 11, and is used to enable the adaptive dynamic balance adjustment component 10 to better adapt to changes in oil well conditions and pumping operation requirements according to the actual operating conditions of the machine body 1.

[0037] The top of the machine body 1 is fastened with a rocker beam 2, which is hollow inside and has an open end away from the donkey head 4, and is used for moving up and down through a crank-connecting rod mechanism installed on the machine body 1 connected thereto.

[0038] An adjusting sealing rod 3 is installed at the side end of the walking beam 2, which is embedded inside the side end of the walking beam 2 and is used to adjust the internal sealing of the walking beam 2 during operation by adjusting the sealing rod 3 to prevent the external environment from affecting the internal structure of the walking beam 2.

[0039] In a specific scheme, at the initial start-up of the machine body 1, the built-in PLC controller analyzes the data collected by the integrated sensor structure according to the preset program and initial parameters to determine the initial balance state of the current machine body 1. When an imbalance is detected, such as uneven load distribution or large resistance to the movement of the walking beam 2, the built-in PLC controller will calculate the weight value and position parameters of the balance block 11 that need to be adjusted according to the preset balance strategy. According to the calculation results, the built-in PLC controller starts the oil inlet pump box 5 and the oil guide pump box 7 respectively, so that the pump in the oil inlet pump box 5 accurately transports the high-density liquid to the specified position inside the balance block 11 through the adapter component guide 6 and the guide flow tube 8, so that the overall mass of the balance block 11 is increased or redistributed according to the predetermined plan, so as to achieve the initial balance adjustment of the machine body 1, ensure that the walking beam 2 can move up and down relatively smoothly, reduce the impact and vibration during startup, and lay the foundation for subsequent normal oil pumping operations. As the oil pumping operation continues, the oil well conditions (such as reservoir pressure, oil content) , water content, etc.) and pumping operation requirements (such as pumping speed, stroke length, etc.) change, and when the load and operating state of the machine body 1 are constantly changing due to these changes, the integrated sensor structure continuously and in real time monitors the motion state and force condition of the walking beam 2, the donkey head 4 and the balance block 11, and transmits the updated data to the built-in PLC controller in time. The data processing unit in the built-in PLC controller quickly analyzes and processes the received new data, and uses advanced algorithms (such as model-based predictive control algorithms or adaptive fuzzy control algorithms) to accurately calculate the optimal balance parameters required by the current machine body 1, including the weight adjustment amount of the balance block 11, the position fine-tuning value and the adjustment parameters of the adaptive dynamic balance adjustment component 10, so that the adaptive dynamic balance adjustment component 10 drives the balance block 11 to form dynamic adaptive balance adjustment, ensuring that the machine body 1 always maintains a good balance state during the entire pumping process, minimizing energy consumption and mechanical wear, and improving pumping efficiency and equipment stability.

[0040] Embodiment 2: In the present invention, according to Figure 2 - Figure 6 As shown, the adaptive dynamic balance adjustment component 10 includes:

[0041] The control driver motor structure 101, the rotating gear 102, the track extension rack 103 and the length track 104, the track extension rack 103 is fastened to the side wall surface of the length track 104, the control driver motor structure 101 is slidably connected to the inside of the length track 104, the surface of the length track 104 and the inner wall surface of the walking beam 2 form a fastening connection, and the output end of the control driver motor structure 101 drives the rotating gear 102 and the track extension rack 103 to form a meshing connection.

[0042] The side end of the control driver motor structure 101 is fastened with a synchronous reinforcement rod 106, and the side end of the synchronous reinforcement rod 106 is fastened with a synchronous position sliding seat 105. The synchronous position sliding seat 105 is located inside the length track 104 to form a sliding connection, and a load-bearing stabilizing plate frame 107 is fastened between the inner wall surfaces of the synchronous position sliding seat 105.

[0043] Three groups of pneumatic drive structures 108 are arranged around the top surface of the supporting and stabilizing plate frame 107. The output ends of the three groups of pneumatic drive structures 108 are connected to a rotating joint 109. The side end of the rotating joint 109 is hinged with a rotating rod 1090, and the side end of the rotating rod 1090 is hinged with a rotating ball joint 1091.

[0044] An angle monitoring sensor is installed inside the rotating ball joint 1091, and a signal connection is formed between the angle monitoring sensor and the built-in PLC controller.

[0045] The side end of the rotating ball joint 1091 is rotatably connected to a fine-motion pitch-adjusting rod 1092 , and the top of the fine-motion pitch-adjusting rod 1092 is tightly connected to the surface of the balancing block 11 .

[0046] In a specific scheme, as the pumping operation begins, the integrated sensor structure (including load sensors, displacement sensors, speed sensors, and position angle sensors, etc.) collects real-time operating data of the upstream beam 2, donkey head 4, and balance block 11 of the pumping unit, and transmits these data to the built-in PLC controller. The built-in PLC controller uses advanced algorithms to calculate the current imbalance state of the pumping unit and the required balance adjustment amount based on the received data. When it is detected that the load on one side of the downstream beam 2 is too large, resulting in a tilting trend, the built-in PLC controller will calculate the direction and distance in which the balance block 11 needs to be moved, as well as parameters such as the angle adjustment amount of the rotating ball joint 1091, to achieve balance compensation.

[0047] Further specific description: According to the calculation result, the built-in PLC controller first sends an instruction to the control driver motor structure 101, so that the control driver motor structure 101 drives the rotating gear 102 to rotate. Since the rotating gear 102 is meshed and connected with the extension rail rack 103, it drives the synchronous position sliding seat 105 to slide on the length rail 104, and the synchronous reinforcement rod 106 ensures the stability and synchronization of the synchronous position sliding seat 105 during the movement, avoiding jamming or offset, and realizing the horizontal position adjustment of the balance block 11. At the same time or after the horizontal position adjustment, the built-in PLC controller adjusts the angle of the rotating ball joint 1091 according to the calculated value. The pneumatic drive structure 108 is used to adjust the balance weight 11, and the pneumatic drive structure 108 drives the rotating joint 109 to rotate, and then drives the rotating ball joint 1091 to change the angle through the rotating rod 1090. The angle change of the rotating ball joint 1091 is transmitted to the balancing block 11 through the micro-adjusting rod 1092, so that the balancing block 11 produces a small displacement or angle adjustment in the vertical direction, and further optimizes the balancing effect. In this process, the angle monitoring sensor monitors the angle change of the rotating ball joint 1091 in real time, and feeds back the data to the built-in PLC controller for precise closed-loop control, and ensures that the rotating ball joint 1091 can accurately reach the preset angle position, so as to achieve the balance effect. The balancing block 11 is precisely fine-tuned. After the balancing block 11 is adjusted, the machine body 1 continues to run for a preset period of time, and the operating data of the walking beam 2, the donkey head 4 and the balancing block 11 are collected again by using the integrated sensor structure, and these data are transmitted to the built-in PLC controller, so that the built-in PLC controller analyzes the new data and evaluates the effect of this balance adjustment. When it is found again that the adjusted balance state still does not meet the optimal requirements, for example, the vibration amplitude of the walking beam 2 is still large or the load distribution is still not ideal, the built-in PLC controller will recalculate the balance adjustment parameters according to the new data, and send control instructions to the control driver motor structure 101 and the pneumatic drive structure 108 again, and perform the balance adjustment on the machine body 102. The balancing block 11 is further fine-tuned until the oil pump reaches a stable optimal balance state, and the overall dynamic balance adjustment with multiple degrees of freedom is effectively realized. It can more accurately adapt to the complex imbalance state of the body 1 under different working conditions, and can quickly and accurately respond to the changes in the imbalance state of the oil pump, so that the adjustment action of the balancing block 11 can be automatically and accurately controlled according to the real-time operating status of the body 1, and precise balance adjustment can be performed, thus realizing the automation and intelligence of the balance adjustment, providing a more comprehensive and sophisticated balance solution, improving the adjustment accuracy, flexibility and overall operating efficiency, increasing crude oil production, reducing the complexity and failure rate of the system, and reducing maintenance costs.

[0048] Embodiment 3: In the present invention, according to Figure 1 - Figure 3 and Figure 7As shown, a central balancing chamber 12 is opened inside the balancing block 11 , flow chambers 14 are opened equally spaced on the outer circumference of the central balancing chamber 12 , and a loop cavity 13 is connected to the outer circumference of the central balancing chamber 12 .

[0049] The side of the loop cavity 13 forms a control connection through a quick connection joint and one end of the flow control valve hose 9.

[0050] In a specific scheme, during the above operation, when the built-in PLC controller calculates the optimal balance state required by the current machine body 1 and the weight adjustment amount and liquid distribution of the balance block 11 based on the received real-time data, according to the demand, when the weight of the balance block 11 needs to be increased, the built-in PLC controller controls the oil inlet pump box 5 to transport more liquid to the central balance chamber 12, and the liquid is redistributed between the central balance chamber 12 and the flow chamber 14, so that the center of gravity and weight distribution of the balance block 11 change to adapt to the new load conditions. Conversely, when the weight of the balance block 11 needs to be reduced, the built-in PLC controller opens the valve on the flow control valve hose 9 on the other side, so that part of the liquid in the central balance chamber 12 and the flow chamber 14 flows back to the oil guide pump box 7 through the loop cavity 13 and the flow control valve hose 9, so as to reduce the weight of the balance block 11 and adjust the center of gravity, thereby ensuring that the machine body 1 always maintains a good balance state during the entire oil pumping process, minimizes energy consumption and mechanical wear, and improves oil pumping efficiency and equipment stability.

[0051] The wiring diagram of the load sensor, displacement sensor, speed sensor, position angle sensor, flow guide tube 8, adaptive component guide 6, control driver motor structure 101 and angle monitoring sensor in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring layout of the load sensor, displacement sensor, speed sensor, position angle sensor, flow guide tube 8, adaptive component guide 6, control driver motor structure 101 and angle monitoring sensor will not be explained in detail.

[0052] The method of using the device and the working principle are as follows: First, when the machine body 1 is initially started, the built-in PLC controller analyzes the data collected by the integrated sensor structure according to the preset program and initial parameters to determine the initial balance state of the current machine body 1. When an imbalance is detected, such as uneven load distribution or large resistance to the movement of the walking beam 2, the built-in PLC controller will calculate the weight value and position parameters of the balance block 11 that need to be adjusted according to the preset balance strategy. According to the calculation results, the built-in PLC controller starts the oil inlet pump box 5 and the oil guide pump box 7 respectively, so that the pump in the oil inlet pump box 5 accurately delivers the high-density liquid to the specified position inside the balance block 11 through the adaptive component guide 6 and the guide flow tube 8, so that the overall balance block 11 The mass is increased or redistributed according to a predetermined plan to achieve a preliminary balance adjustment of the body 1, ensuring that the walking beam 2 can move up and down relatively smoothly, laying the foundation for subsequent normal oil pumping operations, that is, when the weight of the balancing block 11 needs to be increased, the built-in PLC controller controls the oil inlet pump box 5 to deliver more liquid to the central balancing chamber 12, and the liquid is redistributed between the central balancing chamber 12 and the flow chamber 14, so that the center of gravity and weight distribution of the balancing block 11 change to adapt to the new load conditions. Conversely, when the weight of the balancing block 11 needs to be reduced, the built-in PLC controller opens the valve on the flow control valve hose 9 on the other side, so that part of the liquid in the central balancing chamber 12 and the flow chamber 14 flows back to the oil guide through the loop cavity 13 and the flow control valve hose 9 In the pump box 7, the weight of the balance block 11 is reduced and the center of gravity is adjusted. As the pumping operation continues, when the oil well conditions (such as oil layer pressure, oil content, water content, etc.) and pumping operation requirements (such as pumping speed, stroke length, etc.) change, and these changes cause the load and operating state of the body 1 to change continuously, the integrated sensor structure continuously and in real time monitors the motion state and force of the walking beam 2, the donkey head 4 and the balance block 11, and transmits the updated data to the built-in PLC controller in a timely manner. The data processing unit in the built-in PLC controller quickly analyzes and processes the received new data, and uses advanced algorithms (such as model-based predictive control algorithms or adaptive fuzzy control algorithms) to accurately calculate the current The optimal balance parameters required by the machine body 1 include the weight adjustment amount of the balance block 11, the position fine-tuning value, and the adjustment parameters of the adaptive dynamic balance adjustment component 10. According to the calculation results, the built-in PLC controller first sends an instruction to the control driver motor structure 101, so that the control driver motor structure 101 drives the rotating gear 102 to rotate. Since the rotating gear 102 is meshed and connected with the extension rail rack 103, the synchronous position sliding seat 105 is driven to slide on the length rail 104, and the synchronous reinforcement rod 106 ensures the stability and synchronization of the synchronous position sliding seat 105 during the movement, avoiding jamming or offset, and realizing the horizontal position adjustment of the balance block 11. At the same time or after the horizontal position adjustment,The built-in PLC controller sends a control signal to the corresponding pneumatic drive structure 108 according to the calculated angle adjustment amount of the rotating ball joint 1091. The pneumatic drive structure 108 drives the rotating joint 109 to rotate, and then drives the rotating ball joint 1091 to change its angle through the rotating rod 1090. The angle change of the rotating ball joint 1091 is transmitted to the balancing block 11 through the micro-adjusting rod 1092, so that the balancing block 11 produces a small displacement or angle adjustment in the vertical direction, further optimizing the balancing effect. In this process, the angle monitoring sensor monitors the angle change of the rotating ball joint 1091 in real time, and feeds back the data to the built-in PLC controller for precise closed-loop control, and ensures that the rotating ball joint 1091 can accurately reach the preset angle position to achieve balancing. The precise fine-tuning of the balance block 11. After the balance block 11 is adjusted, the machine body 1 continues to run for a preset period of time, and the integrated sensor structure is used to collect the operating data of the walking beam 2, the donkey head 4 and the balance block 11 again, and the data is transmitted to the built-in PLC controller, so that the built-in PLC controller analyzes the new data and evaluates the effect of this balance adjustment. When it is found again that the adjusted balance state still does not meet the optimal requirements, for example, the vibration amplitude of the walking beam 2 is still large or the load distribution is still not ideal, the built-in PLC controller will recalculate the balance adjustment parameters according to the new data, and send control instructions to the control driver motor structure 101 and the pneumatic drive structure 108 again, and further fine-tune the balance block 11 until the pumping unit reaches a stable optimal balance state.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite balanced oil pumping unit with automatic balancing, characterized in that: Included are: The oil inlet pump box and the oil guide pump box are symmetrically fastened to the top of the machine body and are both connected through the matching component guide and the guide flow pipe; Adaptive dynamic balance adjustment components, which are located at the top and bottom of the balance block to form a symmetrical installation arrangement, and are located inside the walking beam to form multiple groups of equally divided and equally spaced installation arrangements, for automatically adjusting balance parameters according to oil well conditions and pumping operation requirements; The adaptive dynamic balance adjustment components include: Control drive motor structure, rotating gear, rail extension rack and length rail, synchronous reinforcing rod, synchronous position sliding seat, pneumatic drive structure, rotating joint, rotating rod, rotating ball joint and micro-adjusting pitch rod; The built-in PLC controller first sends an instruction to the control driver motor structure, so that the control driver motor structure drives the rotating gear to rotate. Since the rotating gear is meshed with the rail extension rack, it drives the synchronous position sliding seat to slide on the length track, and the synchronous reinforcement rod ensures the stability and synchronization of the synchronous position sliding seat during movement, avoiding jamming or offset, and realizing the horizontal position adjustment of the balance block. At the same time or after the horizontal position adjustment, the built-in PLC controller sends a control signal to the corresponding pneumatic drive structure according to the calculated angle adjustment amount of the rotating ball joint. The pneumatic drive structure drives the rotating joint to rotate, and then drives the rotating ball joint to change its angle through the rotating rod. The angle change of the rotating ball joint is transmitted to the balance block through the micro-adjustment rod, so that the balance block produces a small displacement or angle adjustment in the vertical direction, further optimizing the balancing effect.

2. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: The oil inlet pump box is used when the machine body needs to increase the weight of the balance block. The built-in PLC controller on the machine body starts the oil inlet pump box and the oil guide pump box in sequence according to the needs, and transports the high-density liquid from the oil inlet pump box through the adaptive component guide and the guide flow tube to the inside of the balance block, so that the overall mass of the balance block is increased. Conversely, when the weight needs to be reduced, the flow control valve hose is opened to return part of the liquid in the balance block to the oil guide pump box, thereby reducing the weight of the balance block. The integrated sensor structure is composed of a load sensor, a displacement sensor, a speed sensor and a position angle sensor, and forms a signal connection with the data processing unit in the built-in PLC controller. It is installed at the connection between the walking beam, the donkey head and the balance block, and is used to make the adaptive dynamic balance adjustment component better adapt to the changes in the oil well conditions and the requirements of the pumping operation according to the actual operation of the machine body. The top of the machine body is fastened with a walking beam, the inside of the walking beam is hollow and the end away from the donkey head is open, which is used to move up and down through the crank connecting rod mechanism installed on the machine body connected to it.

3. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 2 is characterized in that: An adjusting sealing rod is installed at the side end of the walking beam, which is embedded inside the side end of the walking beam and is used to adjust the internal sealing of the walking beam during operation by adjusting the sealing rod to prevent the external environment from affecting the internal structure of the walking beam.

4. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: The rail extension rack is firmly connected to the side wall surface of the length track, the control driver motor structure is slidably connected to the inside of the length track, the surface of the length track and the inner wall surface of the walking beam form a firmly connected connection, and the output end of the control driver motor structure drives the rotating gear and the rail extension rack to form a meshing connection.

5. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: The synchronous reinforcement rod is fastened to the side end of the control driver motor structure, the side end of the synchronous reinforcement rod is fastened to the synchronous position sliding seat, the synchronous position sliding seat is located inside the length track to form a sliding connection, and a load-bearing stabilizing plate frame is fastened between the inner wall surfaces of the synchronous position sliding seat.

6. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: Three groups of pneumatic drive structures are arranged around the top surface of the supporting stable plate frame, the output ends of the three groups of pneumatic drive structures are connected to the rotating joint, the rotating rod is hinged at the side end of the rotating joint, and the rotating ball joint is hinged at the side end of the rotating rod.

7. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: An angle monitoring sensor is installed inside the rotating ball joint, and a signal connection is formed between the angle monitoring sensor and the built-in PLC controller.

8. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: The fine-motion pitch-adjusting rod is rotatably connected to the side end of the rotating ball joint, and the top of the fine-motion pitch-adjusting rod is tightly connected to the surface of the balancing block.

9. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 1 is characterized in that: A central balancing chamber is provided inside the balancing block, flow cavities are provided at equal intervals on the outer circumference of the central balancing chamber, and a loop cavity is connected to the outer circumference of the central balancing chamber.

10. The compound balanced oil pumping unit with automatic adjustment and balance according to claim 9 is characterized in that: The side of the loop cavity forms a control connection through a quick connection joint and one end of a flow control valve hose.

Images