CN108825207B - Pumping unit simulation evaluation system - Google Patents
Pumping unit simulation evaluation system Download PDFInfo
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- CN108825207B CN108825207B CN201810644618.XA CN201810644618A CN108825207B CN 108825207 B CN108825207 B CN 108825207B CN 201810644618 A CN201810644618 A CN 201810644618A CN 108825207 B CN108825207 B CN 108825207B
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- 238000005086 pumping Methods 0.000 title claims abstract description 98
- 238000011156 evaluation Methods 0.000 title claims abstract description 46
- 238000004088 simulation Methods 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000010586 diagram Methods 0.000 claims description 29
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 239000003129 oil well Substances 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a pumping unit simulation evaluation system, which comprises a load sensor, a displacement sensor, a pull rope, a driving mechanism and a pull rope tensioning device, wherein the displacement sensor is used for being installed on a walking beam of a pumping unit to be tested; the driving mechanism comprises a third roller and a driving motor group for driving the third roller to rotate; the other end of the pull rope is wound on the third roller after being tensioned by the pull rope tensioning device; the pumping unit simulation evaluation system also comprises a touch display screen, a memory and a controller. The scheme is suitable for energy efficiency detection and evaluation of the beam pumping unit, and ensures the stability and reliability of the pumping unit simulation evaluation system to a certain extent.
Description
Technical Field
The invention relates to the field of oil pumping unit evaluation, in particular to an oil pumping unit simulation evaluation system which is suitable for energy efficiency detection and evaluation of a beam pumping unit.
Background
The oil pumping unit simulation evaluation system, namely the oil pumping unit energy efficiency detection and evaluation simulation system comprises a ground system and a downhole system. The restoration of the underground working condition of the pumping unit is an important condition for finishing the detection and evaluation of the energy efficiency of the pumping unit.
The existing simulation evaluation system of the pumping unit has relatively poor simulation evaluation effect, and the phenomenon that a stay wire slips off a roller frequently occurs when the underground working condition of the pumping unit is restored, so that the stability and reliability of the detection and evaluation of the pumping unit efficiency can be affected, and the smooth performance of the detection and evaluation of the pumping unit efficiency of an oil field is not facilitated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a simulation evaluation system of an oil pumping unit, which is used for simulation evaluation of the oil pumping unit in an oil field.
In order to solve the technical problems, the invention provides a pumping unit simulation evaluation system, which comprises a load sensor, a displacement sensor, a stay rope, a driving mechanism and a stay rope tensioning device, wherein the displacement sensor is used for being installed on a walking beam of a pumping unit to be tested;
the driving mechanism comprises a third roller and a driving motor group for driving the third roller to rotate; the other end of the pull rope is wound on the third roller after being tensioned by the pull rope tensioning device;
the pumping unit simulation evaluation system also comprises a touch display screen, a memory and a controller, wherein:
the touch display screen is used for inputting and displaying information of the system and comprises a given indicator diagram for inputting the pumping unit to be tested and various indicator diagrams involved in the system;
a memory for data storage of the system;
the controller is respectively connected with the touch display screen, the memory, the load sensor, the displacement sensor and the driving motor group, and is used for controlling the operation of the driving motor group based on a given indicator diagram of the pumping unit to be detected, which is input through the touch display screen, and is used for calculating the current indicator diagram of the pumping unit to be detected based on the received detection values of the load sensor and the displacement sensor, and is also used for controlling the display and the storage of the given indicator diagram input and the calculated current indicator diagram.
The pumping unit simulation evaluation system also comprises a power sensor for acquiring the actual power of the motor of the pumping unit to be tested in real time, and the power sensor is connected with the controller;
the controller is also used for calculating the motor power utilization rate of the current pumping unit to be detected based on the detection value of the power sensor and the rated power of the current pumping unit to be detected, which is input through the touch display screen, and controlling the display and storage of the calculated motor power utilization rate.
The number of the driving motor groups is two, and the two driving motor groups are respectively arranged at two ends of a roller shaft of the third roller.
The driving motor group comprises a speed reducer and a load motor, and an output shaft of the load motor is coaxially connected with an input shaft of the speed reducer; and an output shaft of the speed reducer is coaxially connected with the corresponding end of the roller shaft of the third roller.
The pull rope tensioning device comprises a U-shaped mounting base, a first roller is rotatably arranged between two side walls of the U-shaped mounting base, a pull rope tensioning mechanism is arranged below the first roller, and the pull rope tensioning mechanism is positioned between two side walls of the U-shaped mounting base;
the pull rope tensioning mechanism comprises a second roller which is parallel to the first roller, two ends of a roller shaft of the second roller are respectively arranged on the bottom wall of the U-shaped mounting base through vertical rods, and a gap for tensioning the pull rope is reserved between the second roller and the first roller.
Wherein the vertical rod is a telescopic rod.
The vertical rod comprises a sleeve vertically fixed on the bottom wall of the U-shaped mounting base and a connecting rod, the upper end of the connecting rod is used for mounting the second roller, and the lower end of the connecting rod is slidably sleeved in the sleeve; the sleeve is provided with a first long strip-shaped hole along the length direction of the sleeve, the lower end of the connecting rod is provided with a second long strip-shaped hole matched with the first long strip-shaped hole along the length direction of the connecting rod, and fastening bolts are arranged in the first long strip-shaped hole and the second long strip-shaped hole.
The controller is electrically connected with the driving motor group through a frequency converter.
Compared with the prior art, the invention has the advantages that:
(1) The pumping unit simulation evaluation system comprises the stay rope tensioning device for tensioning the stay rope, and when the third roller is driven to rotate, the stay rope tensioning device is used for tensioning the stay rope, so that the occurrence probability of the phenomenon that the stay rope wound on the third roller slides away from the third roller is reduced to a certain extent, and the stability and the reliability of the pumping unit simulation evaluation system can be ensured to a certain extent.
(2) According to the simulation evaluation system of the pumping unit, the number of the driving motor groups is two, and the two driving motor groups are respectively arranged at two ends of the drum shaft of the first drum.
(3) The invention also provides a power sensor for acquiring the actual power of the motor of the pumping unit to be tested in real time, and when the power sensor is used, the actual power of the pumping unit to be tested can be acquired in real time and can be sent to the controller, and the controller can calculate the power utilization rate of the motor of the current pumping unit to be tested based on the received detection value of the power sensor and the rated power of the current pumping unit to be tested, which is input through the touch display screen, and is used for controlling the display and storage of the calculated power utilization rate of the motor, so that the power evaluation of the motor of the pumping unit to be tested is completed.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as the benefits of its implementation.
Drawings
Fig. 1 is a schematic partial structure of specific embodiments 1 and 2 of the pumping unit simulation evaluation system according to the present invention.
Fig. 2 is a schematic diagram showing a positional connection relationship among the first drum, each of the gear motors, and the load motor shown in fig. 1.
Fig. 3 is a schematic structural diagram of the pull rope tensioning device in embodiment 2 of the simulation evaluation system of the pumping unit according to the present invention.
Fig. 4 is a schematic structural view of the vertical rod shown in fig. 3.
Fig. 5 is a schematic electrical schematic diagram of specific embodiments 1 and 2 of the pumping unit simulation evaluation system according to the present invention.
Wherein: 1. the displacement sensor, 2, a pull rope, 3, a load sensor, 4, a touch display screen, 5, a controller, 6, a load motor, 6.1, an output shaft, 7, a load motor, 7.1, an output shaft, 8, a third roller, 8.1, a roller shaft, 9, a pumping unit to be tested, 9.1, a horsehead, 9.2, a walking beam, 9.3, a pumping unit motor, 10, a frequency converter, 11, a memory, 12, a pull rope tensioning device, 12.1, a first roller, 12.1.1, a roller shaft, 12.2, a U-shaped mounting base, 12.2.1, a side wall, 12.2.2, a bottom wall, 12.3, a second roller, 12.3.1, a roller shaft, 12.4, a vertical rod, 12.4.1, a connecting rod, 12.4.1.1, a bolt hole, 12.4.1.2, a second long hole, 12.4.2, a sleeve, 12.4.2.1, a first long hole, 12.4.3, a bolt, 13, a power sensor, 14, a speed reducing motor, 15, a speed reducing motor, 16, a coupling, 17, a coupling, a 18, a coupler, and a shaft coupling.
Detailed Description
In order to make the technical scheme and advantages of the present invention more clear, the technical scheme of the present invention will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that, in the present invention, all the azimuth terms are based on the schematic diagram of fig. 1 before rotation. In addition, what is not described in the present specification is what a person skilled in the art can realize based on the prior art and the text description of the present specification, and the present specification is not repeated for simplifying the structure of the present specification.
Embodiment 1:
fig. 1, 2 and 5 are specific embodiments of a simulation evaluation system for a pumping unit according to the present invention. The beam pumping unit simulation evaluation system is used for evaluating the beam pumping unit.
In this embodiment, the pumping unit simulation evaluation system includes a load sensor 3, a displacement sensor 1 for being mounted on a walking beam 9.2 of a pumping unit 9 to be tested, a pull rope 2 with one end for being fixed on a horsehead 9.1 of the pumping unit 9 to be tested through the load sensor 3, a driving mechanism for simulating loading of an oil well of the pumping unit, and a pull rope tensioning device 12 for being mounted below the horsehead 9.1 of the pumping unit 9 to be tested. The driving mechanism comprises a third roller 8 and a driving motor group for driving the third roller 8 to rotate; the other end of the pull rope 2 is wound on the third roller 8 after being tensioned by the pull rope tensioning device 12. The pumping unit simulation evaluation system also comprises a touch display screen 4, a memory 11 and a controller 5. The touch display screen 4 is used for inputting and displaying information of the system, and comprises a given indicator diagram for inputting the pumping unit 9 to be tested and various indicator diagrams related in the system. The memory 11 is used for storing data of the system. The controller 5 is respectively connected with the touch display screen 4, the memory 11, the load sensor 3, the displacement sensor 1 and the driving motor group, and is used for controlling the operation of the driving motor group based on the given indicator diagram of the pumping unit 9 to be detected input through the touch display screen 4, calculating the current indicator diagram of the pumping unit 9 to be detected based on the received detection values of the load sensor 3 and the displacement sensor 1, and controlling the display and storage of the given input indicator diagram and the calculated current indicator diagram. Wherein, the controller 5 adopts a PLC controller. The controller 5 is electrically connected with the driving motor group through a frequency converter 10. Before use, the displacement sensor 1 is arranged on the walking beam 9.2 of the pumping unit 9 to be tested, and the stay cord 2 is arranged on the horsehead of the pumping unit 9 to be tested through the load sensor 3, so that the part of the stay cord 2 between the horsehead 9.1 and the stay cord tensioning device 12 is ensured to be vertically distributed. When the oil pumping unit 9 to be tested is used, the oil pumping unit motor 9.3 of the current oil pumping unit 9 to be tested is started, then a given indicator diagram of the current oil pumping unit 9 to be tested is input to the controller 5 through the touch display screen 4, the controller 5 receives the input given indicator diagram and controls the operation of the driving motor set through the frequency converter 10 based on the received indicator diagram, so that the oil pumping unit oil well loading is simulated through the operation of the driving motor set, in the loading process, the load sensor 3 can detect load resistance generated by a driving mechanism for simulating the oil pumping unit oil well loading in real time and send the load resistance to the controller 5, the displacement sensor 1 can detect displacement of the beam 9.2 of the oil pumping unit 9 to be tested in real time and send the displacement sensor 1 to the controller 5, and the controller 5 can calculate the current indicator diagram of the current oil pumping unit 9 to be tested in real time based on the detection values of the load sensor 3 and the displacement sensor 1 received by the controller, and can display the calculated current indicator diagram and the received given indicator diagram through the touch display screen, and finally the oil pumping unit to be tested and evaluated.
The pumping unit simulation evaluation system comprises the stay rope tensioning device 12 for tensioning the stay rope, when the third roller 12.1 is driven to rotate, the stay rope tensioning device 12 is used for tensioning the stay rope 2, so that certain tension is kept on the part, located between the stay rope tensioning device 12 and the roller 8, of the stay rope 2 all the time, the occurrence probability of the phenomenon that the stay rope wound on the third roller slides away from the third roller 12.1 is reduced to a certain extent, and the stability and the reliability of the pumping unit simulation evaluation system can be ensured to a certain extent.
In this embodiment, the pumping unit simulation evaluation system further includes a power sensor 13 for collecting the actual power of the motor of the pumping unit 9 to be tested in real time, where the power sensor 13 is connected to the controller 5. The controller 5 is further configured to calculate a motor power utilization rate of a motor of the current pumping unit 9 to be tested based on the detection value of the power sensor 13 and the rated power of the current pumping unit 9 to be tested input through the touch display screen 4, and is configured to control display and storage of the calculated motor power utilization rate. When the power sensor 13 is used, the actual power of the pumping unit 9 to be detected can be acquired in real time and can be sent to the controller 5, and the controller 5 can calculate the motor power utilization rate of the motor of the current pumping unit 9 to be detected based on the received detection value of the power sensor 13 and the rated power of the current pumping unit 9 to be detected, which is input through the touch display screen, and is used for controlling the display and storage of the calculated motor power utilization rate, so that the power evaluation of the motor of the pumping unit 9 to be detected is completed.
In addition, in this embodiment, the number of the driving motor sets is two, and the two driving motor sets are respectively installed at two ends of the drum shaft of the third drum 8, so that the loading of the oil pumping unit oil well is simulated by adopting the dual-driving motor set loading mode, thereby expanding the model application range of the oil pumping unit 9 to be tested to a certain extent, and further adapting to the evaluation requirement of the model diversity of the oil pumping unit in the oil field to a certain extent. Specifically, each driving motor group includes a speed reducer 14, a speed reducer 15, a load motor 6, and a load motor 7, wherein an output shaft 6.1 of the load motor 6 is coaxially connected with an input shaft of the speed reducer 14 through a coupling 17, and an output shaft 7.1 of the load motor 7 is coaxially connected with an input shaft of the speed reducer 15 through a coupling 16. One end of the drum shaft 8.1 of the third drum 8 is coaxially connected with the output shaft of the speed reducer 15 through a coupling 18, and the other end is coaxially connected with the output shaft of the speed reducer 14 through a coupling 19.
In addition, a person skilled in the art can choose any rope tensioning device 12 for tensioning the rope according to his habit, so that a certain tension is always maintained on the portion of the rope 2 between the rope tensioning device 12 and the roller 8 to a certain extent without affecting the movement of the rope 2.
Embodiment 2:
fig. 1-5 are schematic diagrams of another embodiment of the pumping unit simulation evaluation system according to the present invention. Compared with the specific embodiment 1, the difference is that the pull rope tensioning device 12 in this embodiment includes a U-shaped mounting base 12.2, a first roller 12.1 is rotatably mounted between two side walls 12.2.1 of the U-shaped mounting base 12.2, a pull rope tensioning mechanism is disposed below the first roller 12.1, and the pull rope tensioning mechanism is located between two side walls 12.2.1 of the U-shaped mounting base 12.2; the pull rope tensioning mechanism comprises a second roller 12.3 which is arranged in parallel with the first roller 12.1, two ends of a roller shaft of the second roller 12.3 are respectively arranged on a bottom wall 12.2.2 of the U-shaped mounting base 12.2 through a vertical rod 12.4, and a gap for tensioning the pull rope 2 is reserved between the second roller 12.3 and the first roller 12.1. This gap is used to tension the pull cord 2. In use, the corresponding portion of the pull cord 2 is pressed against the first roller 12.1 by the second roller 12.3 without affecting the movement of the pull cord. The use of the pull rope tensioning mechanism ensures that the second roller 12.3 and the first roller 12.1 always have tensioning pressure on the pull rope 2, and further ensures that the part of the pull rope 2 between the pull rope tensioning mechanism and the roller 8 always maintains certain tension to a certain extent, thereby reducing the occurrence probability of the phenomenon that the part of the pull rope 2 wound on the third roller slides away from the third roller 12.1 to a certain extent, and further ensuring the stability and reliability of the oil pumping unit simulation evaluation system.
In order to increase the convenience of the invention, the vertical rod 12.4 is a telescopic rod. The vertical rod 12.4 is arranged as a telescopic rod, so that the replacement and the tension adjustment of the pull rope 2 are facilitated. Specifically, in this embodiment, the vertical rod 12.4 includes a sleeve 12.4.2 vertically fixed to the bottom wall 12.2.2 of the U-shaped mounting base 12.2, and a connecting rod 12.4.1 with an upper end for mounting the second roller 12.3, and a lower end of the connecting rod 12.4.1 is slidably sleeved in the sleeve 12.4.2; the sleeve 12.4.2 is provided with a first elongated hole 12.4.2.1 along the length direction thereof, the lower end of the connecting rod 12.4.1 is provided with a second elongated hole 12.4.1.2 along the length direction thereof, the second elongated hole 12.4.2.1 is matched with the first elongated hole, and fastening bolts are arranged in the first elongated hole 12.4.2.1 and the second elongated hole 12.4.1.2. When the adjustable vertical rod 12.4 is used, the relative position relationship between the connecting rod 12.4.1 and the sleeve 12.4.2 is adjusted by screwing down the fastening bolts through the first long strip-shaped hole 12.4.2.1 and the second long strip-shaped hole 12.4.1.2, and then the sleeve 12.4.2 and the connecting rod 12.4.1 are fastened through the fastening bolts after the adjustment is finished, so that the aim of adjusting the length of the vertical rod 12.4 can be fulfilled. Specifically, when the length of the vertical rod 12.4 is shortened, the width of the gap between the second roller 12.3 and the first roller 12.1 is increased, so that the pull rope 2 can be conveniently passed through the gap, and the pull rope 2 can be conveniently taken out from the gap to be replaced. Simple structure and convenient use.
In this embodiment, the second roller 12.3 is in bearing connection with the roller shaft 12.3.1 thereof, the first roller 12.1 is in bearing connection with the roller shaft 12.1.1 thereof, the first roller 12.1 can roll on the roller shaft 12.1.1 thereof, the second roller 12.3 can roll on the roller shaft 12.3.1 thereof, two ends of the roller shaft 12.3.1 are fixedly mounted on the upper end of the vertical rod 12.4 (the upper end of the vertical rod 12.4 is provided with a bolt hole 12.4.1.1 for mounting the roller shaft 12.3.1) through bolts, and two ends of the roller shaft 12.1.1 are non-rotatably mounted on two side walls 12.2.1 of the U-shaped mounting base 12.2. In addition, the person skilled in the art can select other types of rollers according to actual needs.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting thereof; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The simulation evaluation system of the pumping unit is characterized by comprising a load sensor (3), a displacement sensor (1) arranged on a walking beam (9.2) of the pumping unit (9) to be tested, a stay rope (2) with one end fixed on a horsehead (9.1) of the pumping unit (9) to be tested through the load sensor (3), a driving mechanism for simulating the loading of an oil well of the pumping unit, and a stay rope tensioning device (12) arranged below the horsehead (9.1) of the pumping unit (9) to be tested;
the driving mechanism comprises a third roller (8) and a driving motor group for driving the third roller (8) to rotate; the other end of the pull rope (2) is wound on the third roller (8) after being tensioned by the pull rope tensioning device (12);
the pumping unit simulation evaluation system also comprises a touch display screen (4), a memory (11) and a controller (5), wherein:
the touch display screen (4) is used for inputting and displaying information of the system and comprises a given indicator diagram for inputting the pumping unit (9) to be tested and various indicator diagrams involved in the system;
a memory (11) for data storage of the present system;
the controller (5) is respectively connected with the touch display screen (4), the memory (11), the load sensor (3), the displacement sensor (1) and the driving motor group, and is used for controlling the operation of the driving motor group based on a given indicator diagram of the pumping unit (9) to be detected, which is input through the touch display screen (4), and is used for calculating the current indicator diagram of the pumping unit (9) to be detected based on the received detection values of the load sensor (3) and the displacement sensor (1), and is also used for controlling the display and storage of the given indicator diagram input and the calculated current indicator diagram;
the pull rope tensioning device (12) comprises a U-shaped mounting base (12.2), a first roller (12.1) is rotatably arranged between two side walls (12.2.1) of the U-shaped mounting base (12.2), a pull rope tensioning mechanism is arranged below the first roller (12.1), and the pull rope tensioning mechanism is positioned between two side walls (12.2.1) of the U-shaped mounting base (12.2);
the pull rope tensioning mechanism comprises a second roller (12.3) which is arranged in parallel with the first roller (12.1), two ends of a roller shaft of the second roller (12.3) are respectively arranged on the bottom wall (12.2.2) of the U-shaped mounting base (12.2) through vertical rods (12.4), and a gap for tensioning the pull rope (2) is reserved between the second roller (12.3) and the first roller (12.1);
the vertical rod (12.4) is a telescopic rod;
the vertical rod (12.4) comprises a sleeve (12.4.2) vertically fixed on the bottom wall (12.2.2) of the U-shaped mounting base (12.2) and a connecting rod (12.4.1) with the upper end used for mounting the second roller (12.3), and the lower end of the connecting rod (12.4.1) is slidably sleeved in the sleeve (12.4.2); the sleeve (12.4.2) is provided with a first long strip-shaped hole (12.4.2.1) along the length direction of the sleeve, the lower end of the connecting rod (12.4.1) is provided with a second long strip-shaped hole (12.4.1.2) matched with the first long strip-shaped hole (12.4.2.1) in the length direction of the connecting rod, and fastening bolts are arranged in the first long strip-shaped hole (12.4.2.1) and the second long strip-shaped hole (12.4.1.2).
2. The pumping unit simulation evaluation system according to claim 1, wherein: the pumping unit simulation evaluation system also comprises a power sensor (13) for collecting the actual power of the motor of the pumping unit (9) to be tested in real time, wherein the power sensor (13) is connected with the controller (5);
the controller (5) is also used for calculating the motor power utilization rate of the motor of the current pumping unit (9) to be tested based on the detection value of the power sensor (13) and the rated power of the current pumping unit (9) to be tested, which is input through the touch display screen (4), and controlling the display and storage of the calculated motor power utilization rate.
3. The pumping unit simulation evaluation system according to claim 1 or 2, wherein: the number of the driving motor groups is two, and the two driving motor groups are respectively arranged at two ends of a roller shaft of the third roller (8).
4. The pumping unit simulation evaluation system according to claim 3, wherein: the driving motor group comprises a speed reducer and a load motor, and an output shaft of the load motor is coaxially connected with an input shaft of the speed reducer; the output shaft of the speed reducer is coaxially connected with the corresponding end of the roller shaft of the third roller (8).
5. The pumping unit simulation evaluation system according to claim 1 or 2, wherein: the controller (5) is electrically connected with the driving motor group through a frequency converter (10).
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| CN102052062A (en) * | 2010-07-26 | 2011-05-11 | 马丙辉 | Energy-saving tower-type oil pumping device |
| CN204454140U (en) * | 2015-01-26 | 2015-07-08 | 浙江西传电气科技有限公司 | A kind of Pop-up falling proof device of lifting means |
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| CN108825207A (en) | 2018-11-16 |
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