US20150361776A1 - Flywheel energy storage oil pumping machine - Google Patents

Flywheel energy storage oil pumping machine Download PDF

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Publication number
US20150361776A1
US20150361776A1 US14/653,063 US201314653063A US2015361776A1 US 20150361776 A1 US20150361776 A1 US 20150361776A1 US 201314653063 A US201314653063 A US 201314653063A US 2015361776 A1 US2015361776 A1 US 2015361776A1
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Prior art keywords
drive wheel
energy
flywheel
drive
wheel
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Abandoned
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US14/653,063
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English (en)
Inventor
Yongan Qiu
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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
    • E21B43/121—Lifting well fluids
    • E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H33/00—Gearings based on repeated accumulation and delivery of energy
    • F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels

Definitions

  • the present invention relates to the technical field of oil production equipment for an oil field, more particularly to a flywheel energy storage oil pumping machine.
  • An oil pumping machine with a sucker rod in the prior art generally comprises a speed reducer, a balance system, a reversing device and various mechanical driving devices.
  • the energy transfer way of such an oil pumping machine with a sucker rod is: electric motor-belt wheel-speed reducer-balance system-reversing device-various mechanical driving devices. There are many transfer links, resulting in high energy consumption and serious waste.
  • the work done by the oil pumping machines is not uniform due to their structural features.
  • the object of the present invention is to provide a flywheel energy storage oil pumping machine, which is simple in structure, cheap, small in volume, light in weight, small in the installed capacity of the electric motor, low in energy consumption, high in efficiency, low in failure rate, and free from pollution to the power grid.
  • a flywheel energy storage oil pumping machine comprising an electric motor and a control device, and further comprising a rotary spindle;
  • a lifting roller used for raising and lowering a sucker rod, sleeved on the rotary spindle, the separation or joining of the rotary spindle from/with the lifting roller being realized via clutches;
  • roller drive wheel fixedly connected with the lifting roller to form a whole
  • an energy feedback device used for transferring, to the energy adjustment flywheel via the transmission, energy generated during lowering the sucker rod, to realize the accelerated rotation of the energy adjustment flywheel for energy storage, the energy of the energy adjustment flywheel being able to be transferred to the lifting roller for raising the sucker rod when the lifting roller raises the sucker rod;
  • the rotary spindle is driven by the electric motor, and through transmission, the energy adjustment flywheel begins to rotate.
  • the flywheel reaches to a certain rotate speed
  • the sucker rod begins to be lifted, and the pumping machine begins to work.
  • the potential energy of the sucker rod during its down stroke is transferred to the energy adjustment flywheel via the energy feedback device, and then converted by the energy adjustment flywheel into the accelerated rotation of the energy adjustment flywheel, so that the energy is stored.
  • the energy feedback device may control the speed of the sucker rod during the down stroke, thereby making the down stroke of the sucker rod very stable and decreasing the impact.
  • the sucker rod During the up stroke of the sucker rod, the sucker rod is driven to rise through the rotational energy of the energy adjustment flywheel, thus to release energy.
  • the output power of the electric motor does not have to correspond to the instant power consumption of the sucker rod during rising of the sucker rod. Therefore, the power of the electric motor can almost get close to a theoretical minimum value, thereby greatly reducing the installed capacity of the electric motor, making the power output more stable, decreasing the impact to the power grid, and greatly reducing the pollution to the power grid.
  • the oil pumping machine provided by the present invention is not provided with a balance system, a four-bar linkage and other essential members of an existing oil pumping machine, so its structure is simple, both its size and weight are reduced greatly, and its reliability is enhanced greatly.
  • the energy feedback device comprises a drive shaft and a first drive wheel and a second drive wheel disposed on the drive shaft, the first drive wheel or the second drive wheel being connected to the drive shaft via an energy feedback clutch, the first drive wheel and the roller drive wheel being a pair of meshed gears, and the second drive wheel being connected to the transmission.
  • the energy feedback device comprises a rotating shaft, a first drive wheel and a second drive wheel, the rotating shaft being connected to the second drive wheel via an energy feedback clutch, the first drive wheel, the second drive wheel and the roller drive wheels being gears, the first drive wheel being positioned between the roller drive wheel and the second drive wheel and being meshed with both the roller drive wheel and the second drive wheel, and the second drive wheel being connected to the transmission.
  • the energy feedback device comprises a drive shaft and a first drive wheel, the drive shaft being connected to the first drive wheel via an energy feedback clutch, and the first drive wheel being connected to the roller drive wheel via a driving belt.
  • the energy feedback device comprises a drive shaft, a transition wheel fixedly connected to the rotary spindle, and a first drive wheel and a second drive wheel disposed on the drive shaft, the first drive wheel or the second drive wheel being connected to the drive shaft via an energy feedback clutch, the first drive wheel and the roller drive wheel being a pair of meshed gears, and the second drive wheel being connected to the transition wheel via a driving belt.
  • the energy feedback device comprises a drive shaft, a transition wheel fixedly connected to the rotary spindle, and a first drive wheel and a second drive wheel disposed on the drive shaft, the first drive wheel or the second drive wheel being connected to the drive shaft via an energy feedback clutch, the second drive wheel and the transition wheel being a pair of meshed gears, and the first drive wheel being connected to the roller drive wheel via a driving belt.
  • the energy feedback device comprises a drive shaft, a transition wheel fixedly connected to the rotary spindle, and a first drive wheel and a second drive wheel disposed on the drive shaft, the first drive wheel or the second drive wheel being connected to the drive shaft via an energy feedback clutch, the first drive wheel, the second drive wheel and the roller drive wheel being gears, the first drive wheel being meshed with the roller drive wheel, the transition wheel being provided with internal teeth, and the second drive wheel being meshed with the internal teeth.
  • an electric motor gear meshed with the internal teeth, is mounted on the output shaft of the electric motor; or, the output shaft of the electric motor is connected to the transmission via an electric motor clutch.
  • the energy feedback clutch is an overrun clutch.
  • the energy feedback clutch may be a mechanical clutch, for example, the whole clutch is divided into a fixed portion and a slide portion that can be engaged with each other.
  • the slide portion may be pushed by an oil cylinder or air cylinder, so that the slide portion is joined with the fixed portion. If the energy feedback clutch is an overrun clutch, the structure of the whole energy feedback device is simpler, and standard components may be purchased directly.
  • the energy generated during lowering the sucker rod is transferred to the energy adjustment flywheel via the transmission to realize the accelerated rotation of the energy adjustment flywheel; or, the energy generated during lowering the sucker rod passes through the rotary spindle first and is then transferred to the energy adjustment flywheel via the transmission to realize the accelerated rotation of the energy adjustment flywheel.
  • the energy feedback device can transfer the energy generated during lowering the sucker rod to the energy adjustment flywheel, and then the energy is converted into the accelerated rotation of the energy adjustment flywheel to realize energy storage. Therefore, transfer links should be reduced to as few as possible, in order to improve the efficiency and lower the failure rate.
  • the two transfer ways mentioned above have few intermediate links and high efficiency.
  • the oil pumping machine has a simple structure, high efficiency, small installed capacity of the electric motor, no pollution to the power grid, low failure rate and high reliability;
  • the overall structure of the oil pumping machine is simplified greatly, so a large amount of steel is saved, the cost is reduced, and the competitiveness is enhanced; the oil pumping machine is small in size, so it is convenient for transportation and installation; and in addition, the whole oil pumping machine may be protected with a housing, so the protection grade of the oil pumping machine is improved;
  • the oil pumping machine may be applied to regular oil wells or heavy oil recovery; and it may be applied to oil recovery at both land and sea.
  • FIG. 1 is a structure diagram of Embodiment 1 of the present invention.
  • FIG. 2 is a structure diagram of Embodiment 2 of the present invention.
  • FIG. 3 is a structure diagram of Embodiment 3 of the present invention.
  • FIG. 4 is a structure diagram of Embodiment 4 of the present invention.
  • FIG. 5 is a structure diagram of Embodiment 5 of the present invention.
  • FIG. 6 is a structure diagram of Embodiment 6 of the present invention.
  • FIG. 7 is a structure diagram of Embodiment 7 of the present invention.
  • a flywheel energy storage oil pumping machine comprises an electric motor 1 and a control device 3 , and further comprises a rotary spindle 2 , a lifting roller 4 , a roller drive wheel 6 , an energy adjustment flywheel 7 , a transmission 8 , and an energy feedback device 9 .
  • the control device 3 comprises a PLC (Programmable Logic Controller), a position switch, a connection cable, etc., and is used for controlling the action of the whole oil pumping machine.
  • the electric motor 1 may be a general electric motor or a variable-frequency electric motor.
  • the rotary spindle 2 is an integral spindle. Of course, the rotary spindle 2 may be one formed by integrating a plurality of split spindles via couplers or by welding or other manners.
  • the electric motor 1 drives the rotary spindle 2 to rotate.
  • the lifting roller 4 is connected to a sucker rod (not shown) via a soft connector.
  • the sucker rod is driven to rise by the forward rotation of the lifting roller 4 , while during lowering, the sucker rod drives the lifting roller 4 to rotate reversely, so that up stroke and down stroke of the whole oil pumping machine are completed, and the oil pumping work is thus completed.
  • the lifting roller 4 is sleeved on the rotary spindle 2 , so that the relative rotation can be generated between the lifting roller 4 and the rotary spindle 2 .
  • the rotary spindle 2 is separated from or joined with the lifting roller 4 via clutches 5 .
  • the clutches 5 may be electromagnetic clutches, friction clutches, hydraulic clutches or other known clutches.
  • the clutches 5 are mechanical clutches, and there are total two clutches 5 disposed at two ends of the lifting roller 4 .
  • Each clutch 5 includes two portions, one of which is a fixed portion directly fixed on the lifting roller 4 , while the other one is a slide portion connected to the rotary spindle 2 in a form of spline. The two portions are provided with a neck and a latch which are engaged with each other.
  • the slide portion may slide left and right in the axial direction, thereby realizing the join (separation) of the lifting roller 4 with (from) the rotary spindle 2 .
  • the roller drive wheel 6 is fixedly connected to the lifting roller 4 by welding, screwing or other known fixing manners.
  • the transmission 8 may be in many forms.
  • the transmission 8 may be a two-stage, three-stage, four-stage or five-stage transmission, or a continuously variable transmission, or a comprehensive transmission. However, no matter in which form, the transmission 8 has a low-speed end and a high-speed end.
  • the low-speed end of the transmission 8 is connected to the rotary spindle 2 , so that the rotation speed of the rotary spindle 2 is relatively low, usually dozens of revolutions per minute; and the high-speed end of the transmission 8 is connected to the energy adjustment flywheel 7 .
  • the energy adjustment flywheel 7 After the energy adjustment flywheel 7 is connected to the high-speed end, its rotation speed is very high and may reach hundreds and even thousands of revolutions per minute.
  • the energy adjustment flywheel 7 may be directly fixed on the shaft at the high-speed end of the transmission 8 , or, disposed on the shaft specially and then connected to the shaft at the high-speed end of the transmission 8 .
  • the energy feedback device 9 is used for transferring, to the energy adjustment flywheel 7 , energy generated during lowering the sucker rod, to realize the accelerated rotation of the energy adjustment flywheel 7 . Then, the energy of the energy adjustment flywheel 7 is transferred to the lifting roller 4 for raising the sucker rod when the lifting roller 4 raises the sucker rod.
  • the energy feedback device 9 at least comprises a drive shaft 901 and an energy feedback clutch 905 .
  • the energy feedback clutch 905 is generally an overrun clutch.
  • the energy generated during lowering the sucker rod passes through the energy feedback device 9 , wherein, preferably, the energy generated during lowering the sucker rod passes through the energy feedback device 9 first and is then transferred to the energy adjustment flywheel 7 via the transmission 8 , to realize the accelerated rotation of the energy adjustment flywheel 7 ; or, the energy generated during lowering the sucker rod passes through the energy feedback device 9 first, then passes through the rotary spindle 2 , and is finally transferred to the energy adjustment flywheel 7 via the transmission 8 , to realize the accelerated rotation of the energy adjustment flywheel 7 .
  • the energy generated during lowering the sucker rod passes through the energy feedback device 9 first and is then transferred to the energy adjustment flywheel 7 via the transmission 8 , to realize the accelerated rotation of the energy adjustment flywheel 7 .
  • the rotation direction of the rotary spindle 2 and the rotation direction of the energy adjustment flywheel keep unchanged.
  • the energy feedback device 9 comprises a drive shaft 901 and a first drive wheel 903 and a second drive wheel 904 disposed on the drive shaft 901 .
  • the first drive wheel 903 is connected to the drive shaft 901 via an energy feedback clutch 905 . That is, one of the first drive wheel 903 and the second drive wheel 904 is connected to the drive shaft 901 via the energy feedback clutch 905 , while the other one is fixedly connected to the drive shaft.
  • the first drive wheel 903 and the roller drive wheel 6 are a pair of meshed gears; furthermore, the first drive wheel 903 is connected to the drive shaft 901 via the energy feedback clutch 905 .
  • the energy feedback clutch 905 is a sprag overrun clutch.
  • the second drive wheel 904 can be connected to the lower-speed end of the transmission 8 or the other end other than the high-speed end of the transmission, particularly in the case that the transmission 8 is a multi-stage transmission.
  • the second drive wheel 904 is a gear meshed with a gear at the lower-end of the transmission 8 .
  • a transition wheel 902 is fixed on the rotary spindle 2 .
  • the transition wheel 902 may be a gear meshed with a gear at the lower-end of the transmission 8 .
  • An electric motor gear 10 meshed with a gear at the high-speed end of the transmission 8 , is mounted on the output shaft of the electric motor 1 via an electric motor clutch 11 .
  • the electric motor 1 can be connected to a shaft at the high-speed end of the transmission 8 via the electric motor clutch 11 .
  • the working principle of the flywheel energy storage oil pumping machine will be described in brief as below with reference to this embodiment.
  • the oil pumping machine provided by this embodiment is mounted on a pedestal.
  • start the electric motor 1 and the rotary spindle 2 will be driven to rotate.
  • a transition wheel is fixed on the rotary spindle 2 .
  • the transition wheel may be a gear meshed with a gear at the lower-end of the transmission 8 .
  • the energy adjustment flywheel 7 is driven via the transmission 8 to rotate by the rotation of the transition wheel.
  • the clutches 5 When the rotation speed of the energy adjustment flywheel 7 reaches a set value, under the control of the control device 3 , the clutches 5 begin to act and turn into a joined state from a separated state, so that the rotary spindle 2 is joined with the lifting roller 4 .
  • the lifting roller 4 drives the sucker rod to rise to enter an up stroke. During the up stroke, a part of energy of the energy adjustment flywheel 7 is consumed, and the rotation speed is lowered.
  • the control device 3 instructs the clutches 5 to separate from each other according to a preset program, so that the rotary spindle 2 is separated from the lifting roller 4 .
  • the sucker rod Due to the gravity of the sucker rod, the sucker rod falls to enter a down stroke and drags the lifting roller 4 to drive the roller drive wheel 6 to rotate reversely, so that the roller drive wheel 6 drives the first drive wheel 903 to rotate. Furthermore, the rotation speed of the first drive wheel 903 increases with the increase of the falling speed of the sucker rod.
  • the rotation speed of the second riving wheel 904 is the same as that of the first drive wheel 903 , due to the overrun clutch, the second drive wheel 904 and the first drive wheel 903 rotate coaxially at the same speed, further to drive the energy adjustment flywheel 7 to rotate faster via the transmission 8 , so that the energy is stored.
  • the stroke length of the flywheel energy storage oil pumping machine provided by this embodiment is not constricted to the structure due to its structural characteristics, so the flywheel energy storage oil pumping machine is applied to not only oil wells of general stroke length but also oil wells of a stroke above 10 m.
  • the energy feedback device 9 is of another structure, and the transmission 8 will be changed in structure with the structure change of the energy feedback device 9 .
  • the energy feedback device 9 comprises a rotating shaft 907 , a first drive wheel 903 and a second drive wheel 904 .
  • the transmission 8 is a multi-stage transmission, and further has a plurality of connecting ends other than the high-speed end and the low-speed end.
  • the connecting shaft of one of the connecting ends is fixedly connected to the rotating shaft 907 .
  • the rotating shaft 907 may be a part extending from the connecting end.
  • the rotating shaft 907 is connected to the second drive wheel 904 via an energy feedback clutch 905 , wherein, the energy feedback clutch 905 is a sprag overrun clutch.
  • the first drive wheel 903 , the second drive wheel 904 and the roller drive wheel 6 are gears.
  • the first drive wheel 903 is positioned between the roller drive wheel 6 and the second drive wheel 904 and meshed with both the roller drive wheel 6 and the second drive wheel 904 .
  • the first drive wheel 903 is fixed on a drive shaft and able to rotate.
  • the electric motor 1 is connected to a shaft at the high-speed end of the transmission 8 via an electric motor clutch 11 . The remaining is the same as Embodiment 1.
  • the energy feedback device 9 comprises a drive shaft 901 .
  • the drive shaft 901 is connected to a first drive wheel 903 via an energy feedback clutch 905 .
  • the transmission 8 further has a plurality of connecting ends other than the high-speed end and the low-speed end.
  • the connecting shaft of one of the connecting ends is fixedly connected to the drive shaft 901 .
  • the drive shaft 901 may be a part extending from the connecting end.
  • the energy feedback clutch 905 is an overrun clutch.
  • the first drive wheel 903 is connected to the roller drive wheel 6 via a driving belt 906 . The remaining is the same as Embodiment 2.
  • the energy feedback device 9 comprises a drive shaft 901 , a transition wheel 902 fixedly connected to the rotary spindle 2 , and a first drive wheel 903 and a second drive wheel 904 disposed on the drive shaft 901 .
  • the first drive wheel 903 is connected to the drive shaft 901 via an energy feedback clutch 905 .
  • the second drive wheel 904 is directly fixed on the drive shaft 901 .
  • the first drive wheel 903 and the roller drive wheel 6 are a pair of meshed gears.
  • the second drive wheel 904 is connected to the transition wheel 902 via a driving belt 906 .
  • the electric motor 1 is connected to a shaft at the high-speed end of the transmission 8 via an electric motor clutch 11 .
  • the energy generated during lowering the sucker rod passes through the energy feedback device 9 , then passes through the rotary spindle 2 and is transferred to the energy adjustment flywheel 7 via the transmission 8 , to realize the accelerated rotation of the energy adjustment flywheel 7 .
  • the remaining is the same as Embodiment 1.
  • the energy feedback device 9 comprises a drive shaft 901 , a transition wheel 902 fixedly connected to the rotary spindle 2 , and a first drive wheel 903 and a second drive wheel 904 disposed on the drive shaft 901 .
  • the first drive wheel 903 is connected to the drive shaft 901 via an energy feedback clutch 905 .
  • the second drive wheel 904 and the transition wheel 902 are a pair of meshed gears.
  • the first drive wheel 903 is connected to the roller drive wheel 6 via a driving belt 906 . The remaining is the same as Embodiment 4.
  • the energy feedback device 9 comprises a drive shaft 901 , a transition wheel 902 fixedly connected to the rotary spindle 2 , and a first drive wheel 903 and a second drive wheel 904 disposed on the drive shaft 901 .
  • the first drive wheel 903 is connected to the drive shaft 901 via an energy feedback clutch 905 .
  • the second drive wheel 904 is directly fixed on the drive shaft 901 .
  • the first drive wheel 903 , the second drive wheel 904 and the roller drive wheel 6 are gears.
  • the first drive wheel 903 is meshed with the roller drive wheel 6 .
  • the transition wheel 902 is provided with internal teeth 902 a.
  • the second drive wheel 904 is meshed with the internal teeth 902 a.
  • An electric motor gear 10 meshed with the internal teeth 902 a, is mounted on the output shaft of the electric motor 1 via an electric motor clutch 11 . The remaining is the same as Embodiment 4.
  • the roller drive wheel 6 is a gear.
  • the energy feedback device 9 comprises a drive shaft 901 and an energy feedback clutch 905 disposed on the drive shaft.
  • the transmission 8 at least has a low-speed end and a high-speed end.
  • a connecting shaft at the high-speed end of the transmission 8 is fixedly connected to the drive shaft 901 .
  • the transmission 8 may further have a plurality of connecting ends other than the low-speed end and the high-speed end.
  • the drive shaft 901 may be fixedly connected to the connecting shaft of one of the connecting ends. Of course, the drive shaft 901 may be a part extending from the connecting end.
  • the energy feedback clutch 905 is preferably an overrun clutch. When the energy feedback clutch 905 is an overrun clutch, a first drive wheel, meshed with the roller drive wheel, is mounted on the energy feedback clutch 905 . The remaining is the same as Embodiment 3.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US14/653,063 2012-12-17 2013-12-13 Flywheel energy storage oil pumping machine Abandoned US20150361776A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201210546267.1A CN103032052B (zh) 2012-12-17 2012-12-17 飞轮储能抽油机
CN201210546267.1 2012-12-17
PCT/CN2013/089388 WO2014094574A1 (zh) 2012-12-17 2013-12-13 飞轮储能抽油机

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WO (1) WO2014094574A1 (zh)

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* Cited by examiner, † Cited by third party
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CN103032052B (zh) * 2012-12-17 2015-08-26 邱永安 飞轮储能抽油机
CN114718526A (zh) * 2021-01-05 2022-07-08 中国石油天然气股份有限公司 抽油系统及其周期控制方法和持续性控制方法
CN114535323B (zh) * 2022-03-01 2024-06-04 邢台军华机械科技有限公司 一种低噪音的精轧用上料机
CN115255692B (zh) * 2022-08-03 2024-03-22 新疆八一钢铁股份有限公司 一种低碳高Cr合金钢坯连接及轧制方法

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US20010021351A1 (en) * 2000-03-08 2001-09-13 Erwin Kobensen Gear unit for a deep-borehole pump
CN2616679Y (zh) * 2003-03-24 2004-05-19 陈宗毅 飞轮助起动式抽油机
US6749017B1 (en) * 1999-08-27 2004-06-15 Xu Lu Full automatic machine for oil extraction

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CN103032052B (zh) * 2012-12-17 2015-08-26 邱永安 飞轮储能抽油机
CN202990985U (zh) * 2012-12-17 2013-06-12 邱永安 飞轮储能抽油机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820350A (en) * 1995-11-17 1998-10-13 Highland/Corod, Inc. Method and apparatus for controlling downhole rotary pump used in production of oil wells
US6749017B1 (en) * 1999-08-27 2004-06-15 Xu Lu Full automatic machine for oil extraction
US20010021351A1 (en) * 2000-03-08 2001-09-13 Erwin Kobensen Gear unit for a deep-borehole pump
CN2616679Y (zh) * 2003-03-24 2004-05-19 陈宗毅 飞轮助起动式抽油机

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CN103032052B (zh) 2015-08-26
CN103032052A (zh) 2013-04-10

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