CN201176921Y - Hanging pendulum type dynamic balancing synergistic energy-saving oil pumping machine - Google Patents

Abstract

The utility model relates to a swing type dynamic balancing efficiency-improving and energy-saving oil pumping unit; a mechanical structure of the oil pumping unit has two kinds of forms: a rigid dynamic balancing structure and a flexible dynamic balancing structure. The oil pumping unit is basically characterized in that a set or more sets of arm swinging mechanisms are connected with a cross beam; the lower part of the arm swinging mechanism is connected with a load hoisting device; the arm swinging mechanism and the cross beam form a firm walking beam structure; and the arm swinging mechanism and the load hoisting device are combined into a hoisting and swinging device for receiving drive power and balancing load. The oil pumping unit can adopt a plurality of electromotors with different types for carrying out power drive and electric control. The oil pumping unit sets about from two aspects of innovating the mechanical structure and improving corresponding assorted electric control and a control means, uses a mode of combining static balance and dynamic balance, integrates three levels of composite balancing modes into a whole and has a plurality of advantages of novel design, simple structure, reliable operation, good balancing performance, high system efficiency, low maintenance cost for manufacturing and operation, simple handling and mounting, remarkable energy-saving effect, and the like.

Description

Swinging dynamic balancing synergistic energy-saving oil pumping machine

One, technical field

The utility model relates to the petroleum production system that a kind of oil recovery machiner combines with control technique, is a kind of swinging dynamic balancing synergistic energy-saving oil pumping machine.

Two, background technique

Conventional beam-pumping unit is widely used a kind of oil exploration equipment on the present oil field, it is by base, motor and driving belt, retarder, crank-connecting rod, crank counterbalance, support, outstanding rope and rope suspending assemblage, horse head, the quadratic crank mechanism that walking beam assembly and bearing unit etc. are partly formed, although the existing drawback of this mechanism self is very outstanding: the load torque fluctuations is big, power performance is poor, system effectiveness is low, kinetic equation loss is big, the balance adjustment inconvenience, and the walking beam pivot angle is less relatively, be difficult to satisfy the long stroke pumping needs of latter period of oilfield development when the flushing amount increases suddenly etc., yet because this mechanism has simple in structure, it is convenient to install, the functional reliability height, and be fit to be operated in the field throughout the year and need not the special messenger and significant advantage such as keep an eye on, so for over 100 years more than a hundred years in the oil field always in occupation of leading position.

Along with continually developing of oil field, the decline day by day of oil reservoir energy and oil well liquid level is taped the latent power, is improved pumping efficient and seem important all the more with the problem that prolongs pumping unit working life by energy-conservation.For this reason, people have carried out a large amount of research and exploration from different perspectives, attempt to improve to some extent technically and break through.At present each oil field, the whole nation test or the pumping unit Measures of technical that put into operation not hundreds of down more than, but conclude: promptly the mechanical structure of pumping unit itself is reformed and pumping unit power equipment or electric controling mode are improved, replace nothing more than two kinds of technical thought.

Now disclosed both at home and abroad polytype pumping unit, as special beam pumping units, dual-speed energy saving beam-pumping unit with shaped wheel, the hoisting pulley block balance oil extractor, compound head sheave type pumping unit, pneumatic energy storage beam pumping unit, six-connecting-rod beam formula pumping unit, eccentric wheel type pumping unit etc., all be by the mechanical structure of pumping unit body having been done change to a certain degree, though solved the poor efficiency of conventional beam-pumping unit, one or more technical problems such as high energy consumption, but it also tends to follow other such as complex structure simultaneously, the transportation loading and unloading trouble, installation efficiency is low, new problems such as operational reliability difference are arisen at the historic moment.Only there is special beam pumping units to realize mass production at present.

In the improvement of pumping unit power equipment or electric controling mode, present applied technology mainly contains: adopt novel energy-conserving motor replacement AC induction motor such as magneto, install reactive power compensator additional and reduce system loss, Δ/Y conversion equipment, Thyristor Controlled and regulator, Frequency Converter Control motor output power are installed, take out controller between use and solve the problem that the pumping unit sky is taken out poor efficiency.Though use these technology can obtain certain energy efficiency effect; but except that crossing reactive power compensation technology by the oil field extensively the approval, other most technology are because cost height, reliability are low, can't form the scale use of supporting fuel feeding field with pumping unit with factor such as the tightness of plant room and degree of association difference always.

Cause above-mentioned technology to cause to have solved old problem to add the basic reason of new problem again and be research direction mostly from the single direction of energy-conservation or synergy, having ignored the oil field at first is reliability, serviceability to the requirement of pumping unit.The oil field can never take place frequently and causes through often shut-down well so that influence ordinary production be cost with sacrificing for some reason barrier, and admits energy-efficient performance and the same New Product of giving prominence to of technological deficiency.

Three, summary of the invention

The utility model is in order to solve the deficiency in the above-mentioned background technology, a kind of swinging dynamic balancing synergistic energy-saving oil pumping machine is provided, its design is unique, simple in structure, reliable, balanced degree is good, and the system effectiveness height is made with operation expense low, equipment handling simple installation, and energy-saving effect is very remarkable.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of swinging dynamic balancing synergistic energy-saving oil pumping machine, comprise frame, motivational drive and electric control system, it is characterized in that: crossbeam is placed on the frame by rack bearing, the front end of crossbeam is a horse head, the rear end connects the tail boom Equilibrator, on crossbeam, connect one or more groups and be symmetricly set on the oscillating arm mechanisms of the frame left and right sides by link, the lower end of oscillating arm mechanisms connects chain sling, the firm walking beam structure of the common formation of oscillating arm mechanisms and crossbeam, oscillating arm mechanisms and chain sling are combined as the pendulum device that hangs that is used to accept to drive power and balanced load.

The lift heavy container is the stake body of entity, cavity or peripheral hardware barrier, if lift heavy container power follower, it is the center of circle that the bottom shape of lift heavy container then is with the rack bearing, be the circular arc section shape of radius with rack bearing to the distance of its bottom.

Crossbeam is a straight beam structure, or the folding beam structure, or triangular structure.

Tail boom Equilibrator integral body is higher than crossbeam and presents inclined to one side tail boom shape; Or for when pumping unit normally moves, can make the balancer weight that hangs on it that special-shaped horse head of front and back displacement takes place one of crossbeam backend arrangement; Or be the conventional horse head that directly connects the balancer weight of a fixed-site in the crossbeam rear end or be hung with balancer weight; Or be inclined to one side weight-balancing device under crossbeam afterbody hinge one cover; Or be to adopt to hang the directly alternative tail boom Equilibrator of pendulum device.

The suspension rope of horse head links to each other with flexible strip, and crosses the horse head top, is connected with the following inclined to one side weight-balancing device of hinge at the crossbeam afterbody with the reverse wheel that is fixed on the crossbeam afterbody by way of the directional wheel that is fixed on the crossbeam middle part, forms flexible load suspension arrangement; The top of horse head is and the level and smooth tangent little arc shape of the big cambered surface of conventional horse head, and all and the horse head cambered surface side that suspension arrangement can come in contact, and the horse head cambered surface slider that can guarantee smooth and easy slip about the suspension arrangement all is installed; Being arranged on the bearing capacity that horse head top is used for fixing the fastener of suspension rope improves more than the twice with the height that protrudes the horse head cambered surface at least; Down between inclined to one side balance arm and crossbeam mutually the bearing fixing of hinge at beam-ends, or with upper saw pulley can be for coaxial.

Crossbeam is provided with the fluid type weight-balancing device, and the fluid type weight-balancing device is long shape body container, and the inwall of container is the little shape in big centre, two ends; Fluid is liquid or spherical, particle, pulverous solid.

Reconnecting bar at one group of mechanical type slide balance of frame upper hinge connects with the mechanical type slide balance heavy phase of being located on the crossbeam.

Motivational drive and electric control system comprise switched reluctance variable speed machine, linear electric motor, are applicable to the motivational drive transmission system of conventional beam-pumping unit, the drive system of variable-speed capable of reversing, all, normally move thereby make it produce reciprocally swinging drive pumping unit by driving to hanging pendulum device.

If the circular-arc bottom face of powered drive wheel and lift heavy container is tangent or mesh, then these tangent two arc surfaces or at least on one of them arc surface adhesion surfacing and the extremely strong elasticity of tear resistance are arranged; The grinding tooth of engagement is each other then all arranged on these two arc surfaces nibbling mutually, and grinding tooth is set directly on two arc surfaces, or is with synchronously by the grinding tooth that fixedly wear resistance is strong on two arc surfaces; Powered drive wheel can with motor coaxle, or be connected with motor by driving belt.

Electric control system adopts single-chip microcomputer or PLC control technique and modular construction, by by means of the hardware and software in the control system, the working state of pumping unit is carried out intelligent control.

Horse head is conventional formula horse head or stroke length increasing horse head.

Compared with prior art, the advantage and the effect that the utlity model has are as follows:

1, simple in structure, reliable: entire equipment did not have multi-part, the base of fuselage, support, crossbeam, parts universal successions such as horse head the reliability and durability characteristics of common beam machine, particularly work as swing arm and be set as two groups before crossbeam, during back two ends hinges, swing arm and crossbeam have been formed stable triangle walking beam structure, stress and bearing capacity with great web beam, the effect of chain sling makes moving down of equipment center of gravity in addition, makes the existing machine that turns over of conventional machine, the folding beam, equilibrium block comes off, the incidence rates of common safe failure in technology described in the utility model such as crank pin fractures reduce greatly.

2, advanced high, applicability is strong: the utility model is set about simultaneously from the corresponding supporting electric driving of innovation mechanical structure and improvement and two aspects of control device, use the mode quiet, that dynamic balancing combines, integrate three grades of composite balance modes, thereby the comprehensive coordination performance of intrasystem dynamo-electric facility is greatly improved, be fit to very much under the open-air mal-condition that no special messenger keeps an eye on, work throughout the year.

3, the balanced ratio height, obvious energy conservation: unique hanging pendulum type balance equilibrium structure, use gravity and consequent potential energy and bending moment technology as the means that realize transient equiliblium cleverly, and change existing front and back into by the motivational drive mode that will be in the past act on crossbeam up and down and act on the motivational drive mode of hanging pendulum device, both effectively suppress motor and lost the phenomenon of carrying, can prevent again that transient equiliblium from focusing in the equipment running process impacts to system speed, improved the balance quality of system thus greatly, torque ripple is effectively reduced, complete machine operates steadily, system effectiveness is greatly improved, power-actuated output power reduces significantly, and energy-saving effect is very remarkable.

4, motivational drive and Electrical Control Technology maturation: motivational drive mode described in the utility model and corresponding electrical control means have been tending towards ripe, especially Power Drive Unit had all been realized industrialization production already, thereby provided reliable guarantee for the related function that only can be achieved by electrical technology of the utility model.

5, manufacturing and operation expense are low: the basic weight of non-adjusting that comprises chain sling, tail boom Equilibrator, dynamic balancer all can use thing class instead of steel iron materials such as cement, sandstone, brick, liquid; If adopt switched reluctance variable speed machine or linear electric motor to carry out motivational drive, then not only can realize hanging the amplitude of oscillation of pendulum device by little gradually big soft start function, reduce the impact of electric current with this to system, the more important thing is and saved the necessary speed reduction gearing of conventional beam-pumping unit motivational drive, crank, connecting rod, reduce between crank and connecting rod thus, the faults such as carrier bearing between connecting rod and crossbeam are lived point, thereby effectively reduced the incidence rate of fault.

6, equipment handling, installation, dismounting are easy: do not have an otherness requirement to the quality of on-the-spot Measures for Making Ground and Foundation and on-the-spot installation personnel is the same with conventional beam-pumping unit, the installation custom of the on-the-spot installation personnel of change that need not be too much, thus the efficient that can guarantee equipment handling, installation, dismounting is not subjected at all to influence.

Four, description of drawings

Fig. 1 is that to adopt switched reluctance variable speed machine be to be connected with two groups of oscillating arm mechanisms on motive drive source, the crossbeam, to be dynamic adjustments moment means, the rigidity dynamic balance structure schematic representation of inclined to one side tail boom Equilibrator is installed with fluid weight device to the utility model;

Fig. 2 carries out being connected with on power-actuated, the crossbeam two groups of oscillating arm mechanisms, is dynamic adjustments moment means, the rigidity dynamic balance structure schematic representation of inclined to one side tail boom Equilibrator is installed with fluid weight device for the utility model adopts linear electric motor;

Fig. 3 is applicable to that for the utility model adopts the Power Drive Unit of conventional beam-pumping unit carries out being connected with on power-actuated, the crossbeam two groups of oscillating arm mechanisms, is dynamic adjustments moment means, the rigidity dynamic balance structure schematic representation of inclined to one side tail boom Equilibrator is installed with fluid weight device;

Fig. 4 for the utility model adopt variable-speed capable of reversing similar drive system or by adopt driving belt give the equipment transferring power, be connected with two groups of oscillating arm mechanisms on the crossbeam, be dynamic adjustments moment means, when pumping unit normally moves, can make to hang one of tail boom configuration and retransmit the rigidity dynamic balance structure schematic representation of the special-shaped horse head of back displacement before death with fluid weight device;

Fig. 5 increases the journey horse head and substitutes on conventional horse head, the crossbeam and be connected with two groups of oscillating arm mechanisms and adopt the rigidity dynamic balance structure schematic representation of mechanical balancer substitution fluid weight device as dynamic adjustments moment means for the utility model uses;

Fig. 6 is on the basis of Fig. 1, at oscillating arm mechanisms and morph in the chain sling position and the hinging manner of mechanical balancer has been done change, the rigidity dynamic balance structure schematic representation of inclined to one side tail boom Equilibrator is installed;

Fig. 7 adopts one group of oscillating arm mechanisms, is the rigidity dynamic balance structure schematic representation of the balancer weight of a fixed-site of the direct connection in dynamic adjustments moment means, crossbeam rear end with fluid weight device for the utility model;

Fig. 8 directly links to each other with the lift heavy container for the utility model adopts two groups of oscillating arm mechanisms, be that dynamic adjustments moment means, crossbeam rear end are connected a rigidity dynamic balance structure schematic representation that is hung with the conventional horse head of balancer weight with fluid weight device;

Fig. 9 is the flexible dynamic balance structure schematic representation of motive drive source for the utility model adopts switched reluctance variable speed machine;

Figure 10 is the utility model electrical control block diagram.

Numerical coding in the accompanying drawing is represented respectively: 1 is the lift heavy container, 2 is the lift heavy principal arm, 3 is the arm connecting plate, 4 is rear-swing arm, 5 is the rear-swing arm Pivoting bearing, 6 is the lift heavy thing, 7 is the lift heavy auxiliary, 8 is front swing arm, 9 is the front swing arm Pivoting bearing, 10 is crossbeam, 11 is horse head, 12 is the horse head suspension rope, 13 is tail boom balance principal arm, 14 is tail boom balancer weight container, 15 is the tail boom balancer weight, 16 is power take-off mechanism, 17 is rack bearing, 18 is frame, 19 is base, 20 is the fluid type weight-balancing device, 21 are mechanical type slide balance weight, 22 reconnect bar for the mechanical type slide balance, 23 for increasing journey horse head swivel bearing, 24 for increasing journey horse head pull bar, 25 is last horizontalization weight connecting rod rack, 26 is dynamic conveyor belt, 27 is the linear motor stator electric device, 28 is reducing gear, 29 is crank, 30 is pull bar, 31 is flexible strip, 32 is directional wheel, 33 is reverse wheel, 34 is horse head cambered surface slider, 35 is tail boom balance arm anchor bearing, and 36 is horse head suspension rope fastener, 37 is tail boom balance auxiliary, 38 is the tail boom horse head, 39 is tail boom balancer weight displacement carriage.

Five, embodiment

So the present situation that the system effectiveness of pumping unit is low and energy consumption index is high only is difficult to obtain the change of essence, its basic reason load that is to pump is constantly to change, and counterweight can not be accomplished on all four variation with oil pumping load, we can say that the system effectiveness of pumping unit and the height of energy consumption depend on the quality that its balance is adjusted.The utility model exists in pumping crude oil process that efficient is low, energy consumption is high and overcomes that many modified model pumping unit complex structures, transportation are installed problem such as inconvenience, functional reliability difference and a kind of swinging dynamic balancing synergistic energy-saving oil pumping machine of designing in order effectively to solve conventional beam-pumping unit just.

The utility model comprises crossbeam, frame, horse head, suspension arrangement, weight-balancing device, oscillating arm mechanisms, chain sling, base, motivational drive and electric control system etc.Mechanical part of the present utility model has two kinds of structural types, and motivational drive mode and corresponding electrical control means then can have plurality of classes.

1, two of mechanical part kinds of structural types

Be respectively rigidity dynamic balance structure and flexible dynamic balance structure.

(1), the common trait of these two kinds of structures is:

Crossbeam is placed on the frame by rack bearing, the front end of crossbeam is a horse head, the rear end connects the tail boom Equilibrator, on crossbeam, connect one or more groups and be symmetricly set on the oscillating arm mechanisms of the frame left and right sides by link, the lower end of oscillating arm mechanisms connects chain sling, when oscillating arm mechanisms and crossbeam formed the firm walking beam structure of T font or triangle and other polygonal jointly, oscillating arm mechanisms and chain sling also made up in order to be used to accept to drive the pendulum device that hangs of power and balanced load.The lift heavy container can be an entity, also can be to add, to subtract the cavity of lift heavy thing weight or the stake body of peripheral hardware pavilion retaining arbitrarily.If the lift heavy container is born the effect of transmission of power, then the bottom shape of this lift heavy container should to be with the rack bearing be the center of circle, be the circular arc section shape of radius with rack bearing to the distance of its lower end; If the lift heavy container does not have the function of transmission of power, then its shape, quantity and be not subjected to any restriction with the binding site and the combining form of lift heavy arm.The lift heavy container can on establish lift heavy arm and swing arm and link to each other and also can directly be connected by the lift heavy arm with oscillating arm mechanisms.

(2), the rigidity dynamic balance structure is characterised in that:

The tail boom Equilibrator has four kinds of citation forms: one is to be partial to crossbeam, its structure such as Fig. 1, Fig. 2, Fig. 3, Fig. 5, shown in Figure 6 on the tail boom Equilibrator; Its two for can make when pumping unit normally moves one of crossbeam backend arrangement the balancer weight that hangs on it take place before and after the special-shaped horse head of displacement, as shown in Figure 4; Its three conventional horse head for connecting the balancer weight of a fixed-site in the crossbeam rear end or being hung with balancer weight is as Fig. 7, shown in Figure 8; It four hangs pendulum device and substitutes the tail boom Equilibrator for directly adopting.In addition can according to the decision of on-the-spot needs whether install a cover on the crossbeam additional can be in the middle to the weight-balancing device that moves between tailer, this dynamic balancing weight device can be mechanical sliding device, also can be fluid container device; It is configured to the machinery sliding device connect in one group of double link of frame upper hinge and slide balance heavy phase; The fluid container device profile is long shape body, inwall is the little shape in big centre, two ends, and fluid can be that liquid also can be spherical or particle, pulverous solid and convenient the interpolation from container at any time or taking-up.

(3), flexible dynamic balance structure is characterised in that:

One end of flexible strip links to each other with the horse head suspension rope, the other end is crossed the horse head top, be connected with the following weight-balancing device that hangs of hinge with the reverse wheel that is fixed on the crossbeam afterbody by way of the directional wheel that is fixed on the crossbeam middle part, form flexible load suspension arrangement, as shown in Figure 9 at the crossbeam afterbody.Being used to connect the horse head suspension rope is the extremely strong rubber wire band of bearing capacity, wear resistance or all flexible things that can reach similar functions with the rope band that descends inclined to one side weight-balancing device.The top of its horse head should be and the level and smooth tangent little arc shape of the big cambered surface of conventional horse head, and all horse head cambered surface sides that can come in contact with flexible load suspension arrangement must be installed bearing or the like that can guarantee smooth and easy slip about the suspension arrangement; Originally being arranged on the bearing capacity that conventional horse head top is used for fixing the fastener of suspension rope must improve more than the twice at least with the height that protrudes the horse head cambered surface again.Inclined to one side balance arm anchor bearing both can be coaxial with upper saw pulley down, can be non-coaxial with upper saw pulley also.

2, the motivational drive mode of plurality of classes and corresponding electrical control means

Swinging dynamic balancing synergistic energy-saving oil pumping machine described in the utility model can adopt to comprise switched reluctance variable speed machine, linear electric motor, be applicable to that the motor of number of different types of the similar drive system of the motivational drive transmission system of conventional beam-pumping unit, variable-speed capable of reversing carries out motivational drive and electrical control.

(1), its common trait is:

The motivational drive mode of each classification and corresponding electrical control means all are suitable for any pumping unit of two kinds of mechanical structure form described in the utility model is carried out independent power driving and electrical control.All be by swing arm or the chain sling that is connected with swing arm are driven, drive the normal operation of pumping unit thereby make it produce reciprocally swinging.Control system adopts microcontroller control technique and modular construction, preserved signal input interface and signal output interface comprise: sucker rod load transducer interface, the displacement transducer interface, pressure sensor interface, electric moter voltage sensor interface and motor current sensor interface, the remote monitoring interface, control means comprises: the commutation control switch, spacing control switch, machine governor, by by means of the hardware and software in the control system, can calculate the indicator diagram of pumping unit and oil well accurately, curve builds the pressure, the production fluid amount, the hydrodynamic upper thread, map of current, system effectiveness, the working condition of pump, the equilibrium condition of pumping unit etc., and on this basis, adjust the working state of pumping unit automatically.

(2), the same characteristic features that adopts switched reluctance variable speed machine or linear electric motor to carry out motivational drive and electrical control is:

When pumping unit is begun to start by state of rest, can realize that motor hangs pendulum device in driving and does the amplitude of oscillation in the reciprocally swinging process by little gradually big, until reaching the default normal amplitude of oscillation by program setting.Can stepless adjustment swabbing parameter and jig frequency, the stroke of pumping unit, can realize on the pumping unit fast slow down, on slowly down soon, take out four kinds of motor patterns between stagnating during up and down with speed and commutation

(3), the same characteristic features that adopts the similar drive system of switched reluctance variable speed machine or variable-speed capable of reversing to carry out motivational drive and electrical control is:

Powered drive wheel can with motor coaxle, also can be connected with motor and obtain power by transmission device.Powered drive wheel is tangent or engagement with the circular-arc bottom face that hangs chain sling thereon.Two arc surfaces that this is tangent or answer adhesion that surfacing and the extremely strong elasticity of tear resistance are arranged on one of them arc surface at least.The grinding tooth that engagement should all be arranged on these two arc surfaces nibbling mutually each other, grinding tooth both can directly machine shapings on two arc surfaces, also can bring synchronously by the grinding tooth that fixedly wear resistance is strong on two arc surfaces to be achieved.

(4), adopt linear electric motor to carry out motivational drive and electrical control is characterised in that:

The stator of linear electric motor is fixed on inboard or the downside of chain sling near circular-arc bottom face by base, with the mover of chain sling as linear electric motor.

(5), employing is applicable to that the motivational drive transmission system of conventional beam-pumping unit is carried out motivational drive and electrical control is characterised in that:

Change the push-and-pull object into the present pendulum device that hangs by original crossbeam, change the push-and-pull direction into present fore-and-aft direction by original above-below direction, in addition, other still follows original motivational drive mode of conventional beam-pumping unit and electrical control means.Can do suitable adjustment to the jig frequency of pumping unit after installing frequency variator additional.

(6), adopt the similar drive system of variable-speed capable of reversing to carry out motivational drive and electrical control is characterised in that:

Can do suitable adjustment to the jig frequency of pumping unit, can realize on the pumping unit fast slow down, on slowly down soon, the motor pattern taken out between stagnating during up and down with speed and commutation.

All device or the parts of the utility model with obvious characteristic function and effect, under the prerequisite of normal operation of the system that do not influence and effect, both can increase or reduce, also can be each other for and combination mutually, not lacked by the utility model specification to state and the restriction of concrete shape and structure shown in the drawings.

As shown in Figure 1 and Figure 2, the related motive drive source of the utility model is an optimum scheme to adopt switched reluctance variable speed machine or linear electric motor, these two kinds of powered version have been cancelled big weight member such as retarder, quadratic crank mechanism, walking beam, and reduced the power loss in the transmission of power, and improved manufacturing efficiency, reduced manufacture cost, maintenance cost is low, saved electric energy greatly, at the uniform velocity stroke is long, and controllability is good.

As shown in Figure 3, Figure 4, use the on-the-spot of switched reluctance variable speed machines, linear electric motor inconvenience or old equipment carried out technological transformation and wish to make under the situation that obsolete equipment can effectively utilize at some, can adopt the Power Drive Unit of conventional beam-pumping unit or the similar drive system of variable-speed capable of reversing to carry out motivational drive.

As shown in Figure 4, the related rigidity dynamic balance structure equipment of the utility model in oil well geomorphological environment complexity, should not be equipped with the place of tail boom partially, can take to make the heavy special-shaped horse head that the front and back displacement takes place along with swinging up and down of crossbeam of suspension of the back rest, thereby play the effect of bending moment in one of the end configuration of crossbeam.

As shown in Figure 4, in the big oil district of some crude oil denseness,, can consider to adopt driving belt to give equipment indirect transferring power for preventing burn-down of electric motor.

As shown in Figure 5, use and to increase the journey horse head to substitute conventional horse head mainly be for satisfying the long stroke pumping needs of latter period of oilfield development when the flushing amount increases suddenly.

Institute is shown in Figure 6, and the variation of shape and present position can take place for oscillating arm mechanisms and chain sling.

Institute is shown in Figure 7, and equipment can adopt one group of oscillating arm mechanisms, and its crossbeam rear end can directly connect the balancer weight of a fixed-site.

Institute is shown in Figure 8, and oscillating arm mechanisms can the lift heavy arm and directly link to each other with the lift heavy container, and can form triangle, quadrilateral or other polygonal walking beam structure with crossbeam; The rear end of crossbeam connects a conventional horse head that is hung with balancer weight.

Institute is shown in Figure 9, schematic representation for the flexible dynamic balance structure of the utility model, be used to connect following inclined to one side balance arm hinging shaft between tail boom balance arm and crossbeam promise guarantee down inclined to one side weight-balancing device by flexible strip behind the pulling force of accepting from the horse head suspension rope, can realize that the terminal following balance arm anchor bearing partially of inclined to one side Equilibrator be moving up and down of fulcrum down according to the variation of pulling force size.

Figure 10 is the utility model electrical control block diagram.

Be further described below in conjunction with structure and function, the working procedure of equipment, the reliability of system and the mode of execution of aspects such as balance means, energy efficiency approach and implementation of accompanying drawing each related critical piece of the utility model:

1, the structure of each critical piece and function

(1), oscillating arm mechanisms: as previously mentioned, if one group of swing arm quantity will be connected in the crossbeam left and right sides of crossbeam 10 with rack bearing 17 intersections, as shown in Figure 7; If two groups of swing arm quantity, on crossbeam 10, pass through front swing arm bearing 9 and rear-swing arm Pivoting bearing 5, difference hinge front swing arm 8 and rear-swing arm 4, being symmetricly set on composition transverse section, frame 18 left and right sides by link is the oscillating arm mechanisms of П shape, its lower end is connected with lift heavy arm 2 and lift heavy container 1 by arm connecting plate 3 warps, can form triangle walking beam or other polygonal firm walking beam structure with crossbeam 10 simultaneously about two groups of swing arms, oscillating arm mechanisms and chain sling are combined as the pendulum device that hangs that is used to accept to drive power and balanced load.

(2), chain sling: it generally is made up of four parts, comprising: lift heavy container 1, lift heavy thing 6, lift heavy principal arm 2 and lift heavy auxiliary 7.If wherein lift heavy container 1 is as the power follower, then its bottom shape should be with rack bearing 17 and is the center of circle, is the circular arc section shape of radius with rack bearing 17 to the distance of its bottom, bears the effect of follower and balanced load; If lift heavy container 1 is not born the function of power follower, as shown in Figure 3, then its shape, quantity and be not subjected to any restriction with the binding site of lift heavy arm 2.Be provided with the similar offices such as Gai Men that can make things convenient for interpolation at any time or reduce lift heavy thing 6 in the upper end of lift heavy container 1.Lift heavy principal arm 2 can directly save as required with lift heavy auxiliary 7, as shown in Figure 8.

(3), tail boom weight-balancing device: it is made up of three parts, comprises tail boom balance arm 13, tail boom balancer weight container 14, tail boom balancer weight 15.If be the rigidity dynamic balance structure, and crossbeam 10 is independent each other with tail boom balance arm 13, and as Fig. 1, Fig. 2, Fig. 3, Fig. 5, shown in Figure 6, then the tail boom Equilibrator is higher than crossbeam 10 with integral body and presents inclined to one side tail boom shape; When crossbeam 10 can substitute tail boom balance arm 13 roles fully, as Fig. 4, Fig. 7, shown in Figure 8, hanging the tail boom balancer weights or carry out with the balancer weight of crossbeam rear end connection that the tail boom balance also can yet be regarded as with tail boom horse head 38 was a kind of balanced loaded selection.If be flexible dynamic balance structure, as shown in Figure 9, then tail boom balance arm 13 will be connected by tail boom balance arm anchor bearing 35 with crossbeam 10, be subjected to the acting in conjunction of horse head suspension rope 12 and flexible strip 31 and gravity to be inclined to one side state down.The weight of tail boom Equilibrator will realize by regulating the charge weight of tail boom balancer weight 15 in tail boom balancer weight container 14.

(4), putting the shifting balance refitting on puts: it is divided into mechanical sliding device and two kinds of forms of fluid container device.As Fig. 5, shown in Figure 6, it is configured to mechanical sliding device to weigh 21 in the heavy double link 22 of one group of slide balance of frame 18 upper hinges with mechanical slide balance and links to each other.As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 7, shown in Figure 8, fluid container device 20 is rectangular or is convenient to prolong the long shape body that crossbeam 10 fore-and-aft directions are provided with, so the inwall of this container only is designed to the little shape in big centre, two ends, mainly be for prevent wherein fluid in participating in the torque adjusting process owing to be subjected to the effect of gravity, can cause unstable the impact to the normal operation of system.

(5), flexible load suspension arrangement: as shown in Figure 9, horse head suspension rope 12 is crossed horse head 11 tops with flexible strip 31, by way of directional wheel 32 and reverse wheel 33 be connected at the tail boom balancer weight container 14 of crossbeam afterbody by inclined to one side balance arm anchor bearing 35 hinges down, form flexible load suspension arrangement, and the horse head cambered surface side that all and suspension arrangement can come in contact should all be installed and can be guaranteed suspension arrangement slider 34 smoothly up and down.

(6), increase journey donkey head mechanism: the structure of this mechanism is to adopt swivel bearing 23 to be connected with crossbeam 10, and between horse head 11 and frame 18 one group of offset connecting rod 24 of hinge.Crossbeam 10 rotates relatively in pumping unit work, satisfies the long stroke pumping needs of latter period of oilfield development when the flushing amount increases suddenly with this.

(7); motivational drive and control system: powered version is various; control system then adopts microcontroller control technique and modular construction; by by means of the hardware and software in the control system; can calculate the indicator diagram of pumping unit and oil well accurately; curve builds the pressure; the production fluid amount; the hydrodynamic upper thread; map of current; system effectiveness; the working condition of pump; the equilibrium condition of pumping unit etc.; and on this basis; automatically adjust the working state of pumping unit and judge whether needs discontinuous operation of pumping unit according to the degree of filling of the oil mass in the well pump; can be to Ka Jing; lose to carry to wait catastrophic discontinuityfailure to make and shut down and react, can make alarm realizing self-adjusting abnormal conditions.

2, working procedure of the present utility model is:

It is that forward and backward reciprocally swinging is done in the center of circle that power-driven system is prolonging rack bearing by driving chain sling or oscillating arm mechanisms, realizes pumping operation of beam pumping unit with this.

(1), the working procedure of rigidity dynamic balance structure

When hanging pendulum device and arrive peak excursion point backward, horse head comes downwards to descending point of accumulation, and this moment is owing to be subjected to the effect of gravity, on put the balancer weight that shifting balance refitting puts and finished by the overall process of crossbeam afterbody to the motion of crossbeam middle part, thereby temporarily withdrawed from the adjusting to system's moment, the adjusting of system's moment will be by hanging pendulum device and the tail boom Equilibrator is finished jointly.Aspect control, as adopt switched reluctance variable speed machine or linear electric motor to carry out motivational drive and electrical control, also can whether stagnate and stagnate required time length according to the program decision that system is provided with in advance in this some position, so that improve the fullness degree that liquid is gone into pump, and then improve single strike the oil amount.

Begin to do reverse when mobile by back peak excursion point when hanging pendulum device, it is up that horse head drives suspension arrangement, the beginning oil pumping process, this moment, the load of pumping unit strengthened, the potential energy that meanwhile hangs pendulum device begins to play a role, even after hanging pendulum device and crossing its focus point forward, still can play a role by its potential energy of action of inertia.When hanging pendulum device and continue move to drive horse head forward and exceed horizontal line and continue upwards to swing, be subjected to the effect of gravity, on put the balancer weight that shifting balance refitting puts and begin by the beam rear part motion sidelong of crossbeam middle part, and with the adjusting of tail boom Equilibrator, chain sling and oscillating arm mechanisms participation system moment, chain sling centre-of gravity shift begins to put aside potential energy simultaneously.Aspect control, carry out motivational drive and electrical control as adopting switched reluctance variable speed machine or linear electric motor, also can dynamically adjust jig frequency, stroke and motor pattern according to the program that system is provided with in advance.

When hanging pendulum device and arrive peak excursion point forward, horse head goes upward to up point of accumulation, oil pumping process finishes, and on put balancer weight that shifting balance refitting puts and finished already by the crossbeam middle part overall process of beam rear part motion sidelong, the adjusting of system's moment will and be hung pendulum device and finish jointly by dynamic balancing weight, tail boom Equilibrator.Aspect control, as adopt switched reluctance variable speed machine or linear electric motor to carry out motivational drive and electrical control, also can whether stagnate and stagnate required time length according to the program decision that system is provided with in advance in this some position, drop down totally so that exist the interior liquid of pump to rush down, and then improve the effective efficiency of single strike the oil.

Begin to do reverse when mobile by preceding peak excursion point when hanging pendulum device, be subjected to suspension arrangement traction and the acting in conjunction of hanging pendulum device potential energy, horse head is descending, the load of pumping unit reduces, and puts balancer weight and the tail boom Equilibrator that the shifting balance refitting puts on this moment and is used to slow down the acceleration that suspension arrangement drops.Even after hanging pendulum device and crossing its focus point forward, still can play a role by its potential energy of action of inertia, when hanging the acceleration that pendulum device centre-of gravity shift suppressing the suspension arrangement tenesmus, begin to put aside potential energy.When hang pendulum device reach drive horse head low during the horizontal alignment lower swing, be subjected to the effect of gravity, on put balancer weight that shifting balance refitting puts and begin by the crossbeam afterbody to the motion of crossbeam middle part, reduce the adjusting of system's moment is gone downwards to descending point of accumulation until horse head finish the operation of one-period and lose its regulating action gradually.Aspect control, carry out motivational drive and electrical control as adopting switched reluctance variable speed machine or linear electric motor, also can dynamically adjust jig frequency, stroke and motor pattern according to the program that system is provided with in advance.

(2), the working procedure of flexible dynamic balance structure

The pumping unit of flexible dynamic balance structure and the pumping unit of rigidity dynamic balance structure are in finishing the movement process of one-period, and the existing identical point of its principle also has different discrepancys.

Its identical point is: the function and effect, running orbit and identical by the mode of its transferring power of hanging pendulum device; All motivational drive modes and control setting program to aforementioned rigidity dynamic balance structure can both drop into utilization in this mechanism.

Its difference is: removed the dynamic balancer of rigidity dynamic balance structure lift-launch at the crossbeam upside, and adopt the mode that horse head hanging rope and tail boom Equilibrator are directly linked to each other by flexible strip to carry out the moment synchronization regulation, realize the transient equiliblium of system with this.Be exactly specifically when the load that comes from the horse head hanging rope is big, the strength that rope band is added in the tail boom Equilibrator will increase synchronously, and under the effect of lever, the tail boom Equilibrator will following balance arm anchor bearing partially be that fulcrum upwards is raised, thereby has increased moment; Vice versa, when the load that comes from erecting by overhang hour, the strength that rope band is added in the tail boom Equilibrator will reduce synchronously, and under the effect of gravity, the tail boom Equilibrator will following balance arm anchor bearing partially be that fulcrum is lowered downwards, thereby has reduced moment.Need benly be: the variation of load can make flexible strip when adjusting tail boom Equilibrator height, drive the displacement that whole erecting by overhang produces small distance, and this kind displacement just in time can be played the effect of stablizing the erecting by overhang motion speed.

3, the reliability of system and balance means

(1), when oscillating arm mechanisms is two groups or more, triangle that it is stable or the stressed increase several times of the more single walking beam of polygonal walking beam structure, it is connected the common pendulum device that hangs that is used to accept to drive power and balanced load of forming with chain sling.So the balanced action of this device is only remarkable unusually, be that it is in carrying out normal front-rear reciprocation movement, its amplitude of oscillation angle is little, its limit angle is generally about 90 degree, and 90 degree angles hang pendulum device to a needs reciprocally swinging, put aside, store, discharge the best critical angle of potential energy just.

(2), the utility model is when design rigid balancing structure, so only crossbeam 10 and the tail boom Equilibrator under the independent each other prerequisite of tail boom balance arm 13 are presented inclined to one side tail boom shape, as Fig. 1, Fig. 2, Fig. 3, Fig. 5, shown in Figure 6, be based on the consideration of three aspects: the one, this kind is simple in structure, the 2nd, adopt other structural type firm, the 3rd, can according to the working morphology of native system well with hang the pendulum device moment that balanced load changes that complements one another, make sucker rod in the process of one-period up and down reciprocatingly, through superimposed with the potential torque of hanging pendulum device, make from dynamic torque can be not fluctuated excessive peak value or the valley of appearance.As shown in Figure 4, its of tangible crossbeam 10 backend arrangement can make the different in nature horse head 38 that the front and back displacement takes place suspension weight-balancing device 14 thereon when pumping unit normally moves also be the another kind of dynamically effective means of bending moment, just, then need fix a balancer weight displacement carriage 39 that is provided with the movable pulley track at the end of base 19 for preventing that weight-balancing device 14 is influenced by wind in equipment running process and occurs waving.And directly connect a balancer weight in the crossbeam rear end or connect an aforementioned relatively dual mode of mode that is hung with the conventional horse head of balancer weight, as Fig. 7, shown in Figure 8, its counterbalance effect can hang down slightly.

(3), be relative for the pumping unit balance, imbalance is absolute.With respect to hanging pendulum device and last inclined to one side balance tail boom counterbalance effect for system, on put effect that shifting balance refitting puts and only just can be tending towards maximum in that the effect of being brought into play under the proper prerequisite is regulated in the above two and the static balancing of hanging load, really play the effect of " art is good for strength ", therefore rationally utilizing it cleverly will be the important step of its counterbalance effect height of pumping unit of rigidity dynamic balance structure.

(4), the balance of flexible dynamic balance structure then is to adopt the mode of moment synchronization regulation, when the load that comes from horse head hanging rope 12 increases, flexible strip 31 will increase pulling force synchronously to tail boom Equilibrator 14, and under the effect of lever, tail boom Equilibrator 14 will be moving upward, and increases opplied moment with this; When the load that comes from erecting by overhang 12 reduced, the strength that rope band 31 is added in tail boom Equilibrator 14 will reduce synchronously, will fall by the effect tail boom Equilibrator 14 of gravity, thereby had reduced opplied moment.For preventing that erecting by overhang is in accepting the dynamic adjustments process of moment, owing to the upper and lower displacement that produces small distance is fluctuateed the stroke of system, as shown in Figure 8, the utility model will adopt displacement transducer to handle through microcontroller, and the front and back amplitude of oscillation of hanging pendulum device by adjusting in time reduces and compensation the increase or the loss amount of stroke.For preventing that flexible strip 31 from fracture taking place cause the 12 weightless tenesmus of horse head suspension rope to produce bump to well pump, the utility model specially will be arranged on the bearing capacity that conventional horse head top is used for fixing the fastener 36 of suspension rope originally and must improve more than the twice at least with the height that protrudes the horse head cambered surface, thereby make the ∩ shape horse head suspension rope 12 that is arranged in fastener 36 upper ends be easy to stuck part 36 timely hooks firmly in weightlessness tenesmus process.

4, energy efficiency approach and implementation

(1), aspect mechanical structure: adopt hard and soft different two kinds of equilibrium structures, carry out composite balance by tail boom balance, lifting weight balance, three kinds of means of slide balance, especially alternately cooperate between tail boom Equilibrator and the lifting weight balance device, can be rated as and bring out the best in each other, this never has other all types of pumping unit.Begin when up when horse head walks to lower-limit point, the potential energy maximum of hanging pendulum device, and the tail boom Equilibrator comparatively speaking its moment be in minimum state, serve as main balance to be carried out in load mainly at this moment with the potential energy that hangs pendulum device; Cross its center of gravity line and continue to move ahead when hanging pendulum device, its potential energy just can progressively weaken, and this moment the tail boom Equilibrator the arm of force will be by becoming big for a short time, at this moment balanced loaded important task will be transferred the tail boom Equilibrator to gradually by hanging pendulum device.Begin when descending when horse head walks to upper change point, the potential energy that hangs pendulum device is still maximum, and the major responsibility of tail boom Equilibrator is to suppress the acceleration that the load tenesmus is brought; Cross its center of gravity line and continue the back row when hanging pendulum device, its potential energy just can progressively weaken, and this moment the tail boom Equilibrator the arm of force also will reduce, the important task that at this moment suppresses the acceleration that the load tenesmus brought will serve as that the master finishes to hang pendulum device.

(2), aspect the motivational drive: one, adopt switched reluctance variable speed machine, linear electric motor and pumping unit is carried out motivational drive by on AC motor, installing means such as speed change gear additional, itself is just energy-conservation than the employed power-driven system of conventional beam-pumping unit, its two employings switched reluctance variable speed machine, linear electric motor can be save big weight member such as retarder, quadratic crank mechanism, walking beam, thereby reduce the power loss in the transmission of power.Three,, reduce electrical network with this and impact by to the soft start of the amplitude of oscillation by little gradually big feasible system.

(3), aspect system's control: when adopting switched reluctance variable speed machine, linear electric motor as Power Drive Unit, can be according to adopting required parameter in fact, automatically adjust pumping unit jig frequency, stroke, whether need intermittently and each intermittent phase need working state such as time and go up fast slow down, on slowly down soon, up and down with motor patterns such as speed, intermittent pumpings, thereby improve the whole pumping efficient and the energy-conservation target of realization of system.

The swinging dynamic balancing synergistic energy-saving oil pumping comprehensively above-mentioned, that the utility model is related Machine is started with from the angle of economizing merit, learns wildly from other's strong points, and uses mechanics, kinematics, fluidics, electricity The classical principle that gas is learned is solely warded off the small stream footpath, puts forth effort in high reliability, high performance-price ratio, the high adaptation Work hard on property, high fractional energy savings and the high single extraction amount. Have novel in design, simple in structure, Durable, balanced degree good, system effectiveness is high, manufacturing and operation expense is low, equipment The advantages such as handling simple installation and energy-saving effect are very remarkable.

Claims (10)

1, a kind of swinging dynamic balancing synergistic energy-saving oil pumping machine, comprise frame (18), motivational drive and electric control system, it is characterized in that: crossbeam (10) is placed on the frame (18) by rack bearing (17), the front end of crossbeam (10) is horse head (11), the rear end connects the tail boom Equilibrator, go up connection at crossbeam (10) one or more groups is symmetricly set on the oscillating arm mechanisms of frame (18) left and right sides by link, the lower end of oscillating arm mechanisms connects chain sling, oscillating arm mechanisms and crossbeam (10) form firm walking beam structure jointly, and oscillating arm mechanisms and chain sling are combined as the pendulum device that hangs that is used to accept to drive power and balanced load.

2, swinging dynamic balancing synergistic energy-saving oil pumping machine according to claim 1 is characterized in that: chain sling is the lift heavy container (1) of the stake body of an entity, cavity or peripheral hardware barrier; Lift heavy container (1) is the power follower, and the bottom shape of lift heavy container (1) is with rack bearing (17) and is the center of circle, is the circular arc section shape of radius with rack bearing (17) to the distance of its bottom.

3, swinging dynamic balancing synergistic energy-saving oil pumping machine according to claim 1 is characterized in that: crossbeam (10) is a straight beam structure, or the folding beam structure, or triangular structure.

4, according to claim 1 or 3 described swinging dynamic balancing synergistic energy-saving oil pumping machines, it is characterized in that: tail boom Equilibrator integral body is higher than crossbeam (10) and presents inclined to one side tail boom shape; Or for when pumping unit normally moves, can make the balancer weight that hangs on it that special-shaped horse head of front and back displacement takes place one of crossbeam (10) backend arrangement; Or be the conventional horse head that connects the balancer weight of a fixed-site in crossbeam (10) rear end or be hung with balancer weight; Or be inclined to one side weight-balancing device under crossbeam (10) afterbody hinge one cover; Or be to adopt to hang the directly alternative tail boom Equilibrator of pendulum device.

5, swinging dynamic balancing synergistic energy-saving oil pumping machine according to claim 1, it is characterized in that: the suspension rope (12) of horse head (11) links to each other with flexible strip (31), and cross horse head (11) top, be connected with the following inclined to one side weight-balancing device of hinge with the reverse wheel that is fixed on the crossbeam afterbody (33) by way of the directional wheel (32) that is fixed on the crossbeam middle part, form flexible load suspension arrangement at the crossbeam afterbody; Horse head (11) top is and the level and smooth tangent little arc shape of the big cambered surface of conventional horse head, and all and horse head (11) the cambered surface side that suspension arrangement can come in contact, and the horse head cambered surface slider (34) that can guarantee smooth and easy slip about the suspension arrangement all is installed; Be arranged on the protrusion horse head cambered surface of the horse head suspension rope fastener (36) on horse head (11) top; Down the tail boom balance arm anchor bearing (35) that cuts with scissors mutually between inclined to one side balance arm (13) and crossbeam (10) is fixed on beam-ends, or coaxial with upper saw pulley (33).

6, according to claim 1 or 3 described swinging dynamic balancing synergistic energy-saving oil pumping machines, it is characterized in that: crossbeam (10) is provided with fluid type weight-balancing device (20), fluid type weight-balancing device (20) is long shape body container, the inwall of container is the little shape in big centre, two ends, and fluid is liquid or spherical, particle, pulverous solid; Or the mechanical type slide balance on one group of mechanical type slide balance of frame (18) upper hinge reconnects bar (22) and is located at crossbeam (10) heavy (21) links to each other.

7, swinging dynamic balancing synergistic energy-saving oil pumping machine according to claim 1, it is characterized in that: motivational drive and electric control system comprise switched reluctance variable speed machine, linear electric motor, are applicable to the motivational drive transmission system of conventional beam-pumping unit, the drive system of variable-speed capable of reversing, all, normally move thereby make it produce reciprocally swinging drive pumping unit by driving to hanging pendulum device.

8, according to claim 1,2 or 7 described swinging dynamic balancing synergistic energy-saving oil pumping machines, it is characterized in that: the tangent or engagement of the circular-arc bottom face of powered drive wheel and lift heavy container (1), these tangent two arc surfaces or at least on one of them arc surface adhesion surfacing and the extremely strong elasticity of tear resistance are arranged; And the grinding tooth of engagement is each other all arranged on two arc surfaces that this is nibbled mutually, grinding tooth is set directly on two arc surfaces, or is with synchronously by the grinding tooth that fixedly wear resistance is strong on two arc surfaces; Powered drive wheel and motor coaxle, or be connected with motor by driving belt.

9, according to claim 1 or 7 described swinging dynamic balancing synergistic energy-saving oil pumping machines, it is characterized in that: electric control system adopts single-chip microcomputer or PLC control technique and modular construction.

10, according to right 1 described swinging dynamic balancing synergistic energy-saving oil pumping machine, it is characterized in that: horse head (11) is conventional formula horse head or stroke length increasing horse head.

Images