CN201106438Y

CN201106438Y - Pendulum balance intelligent control oil pump

Info

Publication number: CN201106438Y
Application number: CNU2007200926886U
Authority: CN
Inventors: 陈宗武
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-15
Filing date: 2007-11-15
Publication date: 2008-08-27
Anticipated expiration: 2017-11-15

Abstract

The utility model relates to a pendulum type balance intelligent control oil extractor which has the main characteristics that a machine frame is in a cantilever type structure with the top extending outside, and a line suspension wheel is arranged at the extending end. A reversing mechanism is composed of an active reversing wheel and a passive reversing wheel of a rope groove with positive and negative directions. The active reversing wheel and the passive reversing wheel are connected with each other by a reversing pull rope, and a suspension rope is fixed and connected with the passive reversing wheel. A balance mechanism adopts pendulum type balance to be connected and linked with the reversing mechanism by a bridge axis. A motor is connected with a motor vector control cabinet which is connected with an intelligent control device by a data bus, and the intelligent control device is connected with a flow sensor used for monitoring swabbing flow by a signal transmission line. The oil extractor can carry out automatic control to the punching number and the stroke of the oil extractor according to the downhole situation, enhance motor efficiency, reduce labor intensity, and have the advantages of simple structure, high balance degree, reliable performance, electric energy conservationi, production and use cost reduction, etc.

Description

Pendulum type balance intelligent control pumping unit

Technical field

The utility model belongs to the oil production equipment technical field, is a kind of pendulum type balance intelligent control pumping unit that is used for oil field pumping crude oil.

Background technology

In technique known, though the beam pumping unit that generally use in the oil field is easy to use, reliable, because the load of its motor is an one-period property pulsating load, and superposition has the impact of moment.For reducing the fluctuation of oil pumper up-down stroke load, be typically equipped with balance weight, utilize its rotary inertia to stabilize the fluctuation of load, low, the weak effect of this mode coefficient of balance, can only be applicable to rotary speed is higher, load is less many jig frequencies, short stroke oil producing operation, and present most of oil field all is in the later stage of exploitation, a large amount of strippers needs low jig frequency, long stroke, big discharge capacity extraction, lower rotary speed causes the inefficacy of this balance mode, and be not easy to realize long stroke, thereby the needs of incompatibility oil exploitation.Secondly, two peak values are arranged on the load curve of pumping-unit motor, be respectively " dead point " of oil pumper up-down stroke, when restarting behind the oil pumper free parking, always start, therefore need the configuration heavy-duty motor from the dead point, could satisfy the requirement of electric motor starting torque, and rate of load condensate is very low when oil pumper normally moves, and generally 20～30%, causes that power factor is low, efficient is low, waste of energy is big.

Entered since 21 century, developed various blue elephants both at home and abroad in succession, turn to reversible motor or hydraulic motor to drive the cylinder rotating, realize the long stroke oil pumping as employing; Or adopt six bar linkage structures to increase the stroke of walking beam machine; Or employing assembly pulley and the gear-driven journey mode that increases; Or adopting head sheave balance mode or the like, these schemes have all obtained improvement effect in various degree with respect to beam-pumping unit.But, because oil pumper is to work continuously in the field of geography and climate complexity, thereby the popularization of such scheme exists the obstacle of all many-sides, as: complex structure, not sturdy, poor reliability, fault rate height, consumable accessory is many, maintenance management is inconvenient, counterbalance effect is poor, power consumption is big, consume defectives such as steel are many.In addition, in the oil field development manufacturing process, especially enter the development late stage of ultra-high water-containing in the oil field, the oil reservoir fluid supply capacity changes greatly, and the production capacity of oil pumper and oil reservoir fluid supply capacity incompatibility, unbalanced contradiction become increasingly conspicuous.In order to solve this contradiction, the way of in the past taking is a manual adjustment rod-pumped well parameter, is complementary with the stratum fluid supply capacity.But this way wastes time and energy, and is difficult to guarantee rod-pumped well is effectively controlled, even the manual adjustment parameter reaches balance for the moment, also is difficult to keep balance, thereby makes rod-pumped well be in non-equilibrium duty.

The utility model content

The purpose of this utility model provides a kind of automatic real-time adjustment that can carry out stroke, jig frequency according to downhole conditions, the efficient real time monitoring is carried out in extraction operation, and simple in structure, good balance effect, moving link is few, in light weight, consumptive material is few, power consumption is low pendulum type balance intelligent control pumping unit.

Realize that the technical scheme that the purpose of this utility model is taked is: these facility have base, frame, motor, changement and balanced controls, wherein: frame is the cantilever structure that stretch out at the top, external part is equipped with outstanding rope sheave, changement is arranged on a side of frame, just be by band, the master of reverse acting spiral grooving, passive reverse wheel constitutes, and be connected with motor by the belt transmission part, balanced controls adopt pendulum type balance, be arranged on the opposite side of frame, be connected and interlock by the axle of passing a bridge with changement, motor is connected with motor vector controlled cabinet by power line, be used to control the rotating commutation and the rotating speed of motor, motor vector controlled cabinet connects with intelligence controlling device by data/address bus, and intelligence controlling device is connected with in the oil pipeline that is installed in oil well oil-out place or the flow transmitter at the oil-in place of oil well pump by signal transmssion line.

Connect by two forward and reverse stay cords between described master, the passive reverse wheel, the two ends of stay cord are separately fixed on two wheels, wherein, are connected with on the passive reverse wheel and hang rope, and the other end of outstanding rope is walked around outstanding rope sheave and is connected with the sucker rod suspension.

Described balanced controls adopt the pendulum type balance structure, form by balance weight, Xuan Gang, escapement and drive, wherein escapement is installed in the bottom of frame, drive and coaxial installation of passive reverse wheel and interlock, be connected by flexible drive parts between drive and the escapement, be fixed with on the escapement and be used for the heavy outstanding thick stick of hanging balancing.

Be provided with the adjusting keeper that is used for the heavy position of shifting balance between described balance weight and the outstanding thick stick.

Described escapement maximum pendulum angle is less than 180 °.

Described intelligence controlling device comprises an Industrial Personal Computer (IPC) and a display that is used to show detection and controlling parameter, wherein is equipped with in the Industrial Personal Computer (IPC):

One is used to the flow signal acquisition card that receives flow signal and be converted into data signal;

One is used for receiving, handling flow and motor operation signal, and sends the monitor system software of regulation and control instruction to motor vector controlled cabinet.

According to the pendulum type balance intelligent control pumping unit that such scheme is made, its beneficial effect is:

1) this oil pumper adopts pendulum type balance structure, and coefficient of balance is brought up to more than 90%, the pulsating load of the upper and lower stroke of sucker rod is become symmetrical load, thereby reduce the power of motor configuration, improves the power factor of running, reduces power attenuation.

2) stroke, the jig frequency that adopts the frequency control of motor vector controlled cabinet can regulate oil pumper in real time, and the speed of regulating upper and lower stroke respectively in real time, both do not had to start and impacted, can solve the problem that choice of electrical machine is excessive, power factor is on the low side again, when obtaining energy efficiency, improve the application life of oil pumper complete machine and oil well pump, reduce mechanical breakdown, improve reliability.

3) Pei Zhi fluid flow transmitter fluid situation under the monitor well in real time, and according to downhole conditions the operation of oil pumper is adjusted in real time automatically and controlled by intelligence monitoring and controlling device, improve the coefficient of fullness of oil well pump, reduce pump leakage, to obtain maximum oil yield efficiency.

4) intelligence monitoring and controlling device of this machine can carry out real-time analysis to motor operation and downhole conditions fast, and by motor vector controlled cabinet to rotating speed of motor, torque with turn to and make real-time adjustment automatically, in the monitoring processing procedure, also can adjust and control by man-machine exchange, oil pumper and down-hole fault are in time handled, each operation values all can show at display interfaces simultaneously, and can require automatic generating run report according to setting, this device also can be realized the concentrated remote monitoring of oil pumping gang of wells by long-distance transmissions.

5) also to have structure simple and direct for this machine, and moving link is few, and is reliable, and advantages such as long service life are compared with existing beam pumping unit, can save steel more than 50%, thereby reduce the manufacturing cost of this machine greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the lateral view of Fig. 1;

Fig. 3 is the rear elevation of Fig. 1;

Fig. 4 is the intelligent monitor system flow chart;

Fig. 5 is the Industrial Personal Computer (IPC) working plan.

The specific embodiment

Referring to Fig. 1, Fig. 2, Fig. 3, pendulum type balance intelligent control pumping unit of the present utility model has base 14, frame 7, motor 2, changement and balanced controls.Wherein: the cantilever structure that frame 7 is stretched out for the top, external part are equipped with outstanding rope sheave 8, with the main body of maintenance frame 7 and the distance between the well head 10, are convenient to the processing of workover treatment and down-hole fault.Changement is arranged on a side of frame 7, is to be made of master, passive

reverse wheel

4,5, is equipped with forward and reverse spiral drum slot on main, the passive

reverse wheel

4,5, damages because of extrusion friction in winding process to prevent stay cord.Initiatively reverse wheel 4 is contained in the bottom of frame 7, and be connected with motor 2 by belt transmission part 3, passive reverse wheel 5 is contained in the middle part of frame 7, connect by two commutation stay cords between main, the passive

reverse wheel

4,5, the two ends of stay cord are separately fixed on two wheels, when motor 2 replaces forward and reverse rotation, drive passive reverse wheel 5 forward or reverse by a stay cord respectively.The middle part of passive reverse wheel 5 is fixedly connected with and hangs rope 6, and the other end of outstanding rope 6 is walked around outstanding rope sheave 8 and is connected with sucker rod 9 suspensions.The balanced controls of this oil pumper adopt pendulum type balance, the corresponding opposite side that is arranged on frame 7 with changement, be by balance weight 15, outstanding thick stick 17, escapement 18 and drive 19 are formed, wherein escapement 18 is installed in the bottom of frame 7, drive 19 together is packed on the axle 20 of passing a bridge with passive reverse wheel 5, and rotate together, which is provided with the spiral drum slot that is used to arrange rope, drive 19 and escapement 18 are connected by steel cable, be fixed with on the escapement 18 and be used for hanging balancing and weigh 15 outstanding thick stick 17, be provided with the adjusting keeper 16 that is used for the heavy position of shifting balance between balance weight 15 and the outstanding thick stick 17, this part can adopt screw rod, nut is regulated, or adopts tooth bar, gear is regulated or worm screw, tooth bar is regulated.Balance weight 15 is by regulating the external part that keeper 16 is installed in outstanding thick stick 17, move and adjust its installation site, the size of adjustable leveling weighing apparatus moment, to adapt to different pumping load, and utilize lever principle that the coefficient of balance of oil pumper is reached more than 90%, reduce the rated power of necessary electromotor greatly, save power consumption.When outstanding rope mistake was carried, balance weight 15 was in the suspended swinging state all the time, can guarantee the safety of complete machine effectively simultaneously.In this oil pumper structure, passive reverse wheel 5 greater than the diameter of active reverse wheel 4, initiatively the diameter of reverse wheel 4 to realize double reduction, strengthens moment output greater than the diameter of motor pulley, reduces the power configuration of motor 2.The outside diameter of passive reverse wheel 5 is determined by the relation of maximum rotating cycle of its forward and backward and oil pumper maximum stroke, diameter proportion between drive 19 and the escapement 18 should guarantee that the maximum pendulum angle that makes escapement 18 is less than 180 ° in drive 19 maximum rotation number of turns scopes.

The motor vector controlled cabinet 1 of this oil pumper connects with motor and intelligence controlling device by power line and data/address bus respectively, the programmable, intelligent power model is housed in it, it is to adopt two CPU to handle, be that its internal configurations has DSP and MCU, realize measurement, calculating and the control of motor 2 rotating speeds, torque and phase place by DSP, MCU then is used for finishing the signal transmission of data monitored to Industrial Personal Computer (IPC) 12 monitoring treatment systems, and accepts the control signal that Industrial Personal Computer (IPC) 12 sends.By DSP torque, phase place and the rotating speed of motor 2 are controlled, to realize the optimum speed control of motor 2.Wherein, the control of torque is carried out accommodation control by DSP automatically according to the transient change induction of motor 2 load, and phase place and rotating speed are then adjusted according to the controlling parameter instruction that Industrial Personal Computer (IPC) 12 sends by DSP.

The configuration of motor vector controlled cabinet 1 can change the state that oil pumper is in the poor efficiency acting for a long time, its method of operation and oil well actual load are complementary, reduce poor efficiency even invalid pumping, can realize simultaneously the friction speed operation adjustment of up-down stroke, and reduce the electricity charge thus and pay wages, reduce maintenance cost, improve operational efficiency.The motor vector controlled cabinet 1 that uses in this case can directly be purchased in market.

In the oil pipeline at well head 10 places or the oil-in place of oil well pump an induction type flow transmitter 11 is installed, this sensor connects with Industrial Personal Computer (IPC) 12 by signal transmssion line, be used for gathering the instantaneous fluid flow signal of pumping process, analyze down-hole liquid level situations for Industrial Personal Computer (IPC) 12, as determine pumping jig frequency stroke according to parameter.

Intelligence controlling device comprises an Industrial Personal Computer (IPC) 12 and a display 13, the integrated chip of a band monitoring treatment system software wherein is housed in the Industrial Personal Computer (IPC) 12, be used to receive, handle the operational factor of pumping flow and motor 2, and send instruction to vector controlled cabinet 1 by the D/A conversion; A flow signal acquisition card is used for by the A/D conversion pumping flow signal that flow transmitter 11 transmits being converted to data signal, and stores for future use.This Industrial Personal Computer (IPC) 12 has good function of shielding, and is safe and reliable to operation, can also realize remote centralized control by communication interface.By intelligence controlling device, can realize the real-time adjustment of oil pumper stroke, jig frequency, guarantee the optimal operational condition of oil pumper, to reach the optimum efficiency of high efficiency, low energy consumption, the running of oil pumper is controlled automatically.Meanwhile, Industrial Personal Computer (IPC) 12 shows the measured value and the budget result of all kinds of parameters in real time at the screen of display 13, by communication interface various information is sent to gang of wells network center, carries out Centralized Monitoring, thereby alleviates the oil recovery working strength of workers greatly.

Fig. 4 is the intelligent monitor system flow chart, this system in use rule of thumb data set up pumping flow, oil pump coefficient of fullness, jig frequency, the calculation process model that concerns between stroke, control stroke, control jig frequency and the parameters such as Electric Machine Control rotating speed, phase place in real time in real time, import monitoring treatment system software, promptly move the oil well pump coefficient of fullness of each jig frequency of pumping flow rate calculation under stroke, the jig frequency state by current oil pumper, calculate control stroke, control jig frequency by this dependency relation again, and then be converted to the control rotating speed and the control phase of motor 2.After starting oil pumper, the instantaneous flow rate signal that flow transmitter 11 is gathered is converted to data signal by A/D, be stored in the flow signal acquisition card, calculate the controlling parameter of determining stroke, jig frequency by monitoring treatment system software utilization calculation process model, and be converted to the rotating speed and the phase controlling parameter of motor 2.Simultaneously, motor vector controlled cabinet 1 is sent to monitoring treatment system software with the real-time rotating speed and the phase place monitoring data signal of motor operation by data/address bus, according to the program that is provided with the definite controlling value of the rotating speed of motor 2 and phase place monitor value and computing is compared and calculates difference value respectively by monitoring treatment system software, as adjusting controlled quentity controlled variable, send according to this and instruct, can adjust in real time motor operating parameter to motor vector controlled cabinet 1.When fluid pumping flow is too little, the oil well pump coefficient of fullness occurs and cross when hanging down, send instruction to motor vector controlled cabinet 1 by monitor system software according to setting program, stop the motor operation, carry out intermittent extraction.This system can be as required at any time in all kinds of parameters of display 13 screen displays by man-machine exchange, also can various information be sent to gang of wells network center by communication interface, carry out Centralized Monitoring,, realize the automation control of the efficient extraction of oil pumper by the operation of intelligent monitor system.

Fig. 5 is the Industrial Personal Computer (IPC) working plan, and the working programme of Industrial Personal Computer (IPC) 12 is to open Industrial Personal Computer (IPC) 12, and flow, oil pump coefficient of fullness, jig frequency, control stroke, control jig frequency calculation process model are imported monitoring treatment system software.When oil pumper brings into operation, earlier to the initialization of monitoring treatment system, make it to be in the operation state for the treatment of, automatically transfer the real-time traffic information parameter by monitoring treatment system software then, and utilization calculation process model calculates oil well pump coefficient of fullness, oil pumper control jig frequency, control stroke and Electric Machine Control rotating speed, control phase parameter successively.Software is transferred the running speed of motor 2, the real-time monitor value of phase place from motor vector controlled cabinet 1 automatically according to setting program then, and with the controlling parameter of calculating relatively, calculate difference value, when difference value is zero, illustrate that then motor 2 operations are normal, need not adjust; When difference value is non-vanishing, then send instructions to motor vector controlled cabinet 1 automatically by software, the operation of motor 2 to be adjusted, operation so repeatedly is to stopping the extraction end of job.

Claims

1, a kind of pendulum type balance intelligent control pumping unit, has base, frame, motor, changement and balanced controls, it is characterized in that: frame is the cantilever structure that stretch out at the top, external part is equipped with outstanding rope sheave, changement is arranged on a side of frame, just be by band, the master of reverse acting spiral grooving, passive reverse wheel constitutes, and be connected with motor by the belt transmission part, balanced controls adopt pendulum type balance, be arranged on the opposite side of frame, be connected and interlock by the axle of passing a bridge with changement, motor is connected with the motor vector controlled cabinet that is used to control motor positive and inverse commutation and rotating speed by power line, this switch board connects with intelligence controlling device by data/address bus, and intelligence controlling device is connected with in the oil pipeline that is installed in oil well oil-out place or the flow transmitter at the oil-in place of oil well pump by signal transmssion line.

2, pendulum type balance intelligent control pumping unit according to claim 1, it is characterized in that: connect by two forward and reverse stay cords between described master, the passive reverse wheel, the two ends of stay cord are separately fixed on two wheels, wherein, be connected with on the passive reverse wheel and hang rope, the other end of outstanding rope is walked around outstanding rope sheave and is connected with the sucker rod suspension.

3, pendulum type balance intelligent control pumping unit according to claim 1, it is characterized in that: described balanced controls adopt the pendulum type balance structure, form by balance weight, Xuan Gang, escapement and drive, wherein escapement is installed in the bottom of frame, drive and coaxial installation of passive reverse wheel and interlock, be connected by flexible drive parts between drive and the escapement, be fixed with on the escapement and be used for the heavy outstanding thick stick of hanging balancing.

4, pendulum type balance intelligent control pumping unit according to claim 3 is characterized in that: be provided with the adjusting keeper that is used for the heavy position of shifting balance between described balance weight and the outstanding thick stick.

5, pendulum type balance intelligent control pumping unit according to claim 3 is characterized in that: described escapement maximum pendulum angle is less than 180 °.

6, pendulum type balance intelligent control pumping unit according to claim 1 is characterized in that: described intelligence controlling device comprises an Industrial Personal Computer (IPC) and a display that is used to show detection and controlling parameter, wherein is equipped with in the Industrial Personal Computer (IPC):