The mechanical commutation reducing tower shelf type oil pumping machine
One. technical field: the utility model relates to a kind of oil pumper, particularly relates to a kind of multiple-power reducing tower shelf type oil pumping machine.
Two. background technology: in the oil recovery process of oil field, oil pumper is one of oil production equipment main in the oil producing operation.The common beam oil pumper have stroke less, from deficiency such as great, that occupation of land is many, counterbalance effect is undesirable, reduction box output torque fluctuation big, efficient is low.Though the pylon oil pumper has advantages such as stroke is long, in light weight, floor space is little, energy-conservation.But also exist operation to step down, do and show that the merit unloading is inconvenient, reversing impact is big, nothing is lost defectives such as carrying protection mostly, its uniform motion makes oil well pump, and load can not even variation in aspiration procedure.
Three. the utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of reasonable in design, simple in structure, mechanical commutation reducing tower shelf type oil pumping machine that energy consumption is low and easy to operate is provided.
The technical solution of the utility model is: a kind of mechanical commutation reducing tower shelf type oil pumping machine, contain pylon, base assembly and power assembly, described power assembly contains motor, cylinder, reducer, speed increaser, crank and rocker mechanism, hand-operated brake mechanism and controller, wherein, described cylinder suit is fixed on the main shaft, described main shaft two ends are installed on the described base assembly by bearing and bearing support, the one end is connected with an end of described crank and rocker mechanism by described speed increaser, the other end of described crank and rocker mechanism is connected with the output shaft of described motor by described reducer, described motor, speed increaser and reducer are installed on the described base assembly, and described motor is connected with described controller; Suspender belt cannelure and back strap cannelure before being respectively arranged with on the described cylinder outer round surface, one end of preceding suspender belt is fixed in the described preceding suspender belt cannelure, its other end passes from described pylon, walk around the front jocket wheel of installing on the semi girder, be connected with the polished rod eye assembly, described semi girder is installed in described pylon top again; One end of back strap is fixed in the described back strap cannelure, and its other end passes from described pylon, walks around the back guide wheel that install on described pylon top, is connected with the counterweight assembly again; The rail assembly that is provided with on described counterweight assembly and the described pylon is slidingly matched, and described hand-operated brake mechanism is installed in the speed end of described reducer, and its manual operation section is installed on the described base assembly.
Described motor is three asynchronous machines of Y series, described controller adopts the PLC programmable logic controller, and the oil pumping of accurately controlling oil pumper is dynamic, and this controller also is provided with wireless remote sensing system, can realize Long-distance Control, the hand-held programmer gets final product the duty of remote wireless control oil pumper.
Described counterweight assembly is a fabricated structure, is formed by connecting by a plurality of ballast boxes, can increase and decrease; And, described counterweight assembly is provided with lubricated box, and described lubricated box is clamped on the guide upright post of described rail assembly, can slide up and down along guide upright post, be provided with lubricating grease in the described lubricated box, on the contact surface of described lubricated box and guide upright post the lubricating grease open-work be set.Described semi girder rear end is connected with described pylon top by bolt.
Be respectively arranged with two preceding suspender belt cannelures and two back strap cannelures on the described cylinder outer round surface, the suspender belt cannelure was all fixedlyed connected with an end of a preceding suspender belt before each was described, and each described back strap cannelure is all fixedlyed connected with an end of a back strap; Described front jocket wheel is the two-wheel groove, is complementary with two preceding suspender belts, and described back guide wheel is the two-wheel groove, is complementary with two back straps.
Described cylinder is an integral structure, perhaps is split-type structural, is made up of two cylinder splits, suspender belt cannelure and back strap cannelure before being provided with in each cylinder split.
Be milled with the plane on the preceding suspender belt cannelure of described cylinder and the outer round surface of back strap cannelure, suspender belt and back strap are fixed on this plane by bolt and pressing plate respectively before described, and the outer round surface of described pressing plate outer round surface and described preceding suspender belt cannelure and back strap cannelure is complementary.
Described speed increaser is one group of gear train that can change output speed; Described reducer is the two arc cylinder formula reducers of two-stage shunting formula.Described motor is furnished with one group of belt pulley, and the size of change belt pulley is to change the oil pumping frequency of oil pumper; Described crank and rocker mechanism contains rocking bar, connecting rod and a crank, and described crank is provided with three crank pin holes, and the position of change crank-pin is to change the stroke of oil pumper.
Described pylon is a monolithic construction, or is split modular structure, is formed by connecting by at least two pylon splits.
The beneficial effects of the utility model are:
1, the utility model adopts cylinder to twine suspender belt and realizes the cylinder reducing, and during upstroke, twining on the weighting distribution wheel has expired suspender belt, and the lifting wheel suspender belt is all emitted; Cause the wheel footpath of this moment not waited, the rear portion counterweight is big to the arm of force of bottom main shaft effect, and the arm of force of front end is less.Then the moment that this moment, the rear portion counterweight produced is maximum, has reduced the moment of torsion that reducer will be exported, and has reduced the required electric weight of motor.The arm of force of rear portion counterweight is reducing when rising, and the front end arm of force is increasing, and oil pumper is simultaneously also in unloading.Front end arm of force maximum during to top dead-centre, rear end arm of force minimum; Repeated the operating mode of top dead-centre conversely.It has all reduced the required electric current of motor last bottom dead centre, so it is energy-conservation.In addition, the balance weight of counterweight assembly is divided into size block, can increase and decrease, and can reach accurate adjustment, and balance weight can be built junk, and cost is low and increase and decrease is convenient.
2, be full of lubricating grease in the lubricated box of the utility model, when the mutual despatch sassafras of lubricated box and guide upright post, the heat of generation is heated the contact side that lubricates box and guide upright post, causes lubricating grease to melt, and the lubricating grease of fusing flows on the guide upright post face by open-work.When having moistened, frictional force reduces, shortage of heat, and grease no longer melts, and also no longer smears lubricating grease to the guiding column, has so just reached self-lubricated result.
3, the utility model well head is stepped down conveniently, adopts semi girder to slide and steps down; After unloading the semi girder set bolt, promote semi girder and slide backward, thereby reach the purpose of stepping down.
4, pylon of the present utility model is the more piece pylon structure, and each saves pylon by Bolt Connection, can split transport, and reduces the pressure of transportation aspect, and in addition, split type pylon can also be according to the requirement increase and decrease joint number of operating mode, to change the oily machine pylon height of oil pumping.
5, the utility model has adopted automation control system, and this control system is provided with wireless remote sensing system, the energy Long-distance Control, and the hand-held programmer is for remote wireless control oil pumper duty provides convenience.It can also be presented at the acceleration of the electric current in the running, voltage, each point on the display screen, monitors oil pumper each side parameter constantly.Can also be provided with overcurrent protection this moment, and autostop when oil pumper transships is controlled conveniently, and is safe.
6, the utility model compactness rational in infrastructure, laborsaving consumption reduction, under same operating mode than conventional pumping unit weight saving 40-70%; Reduce 40-70% than the conventional pumping unit power consumption.
7, the utility model has adopted crank and rocker mechanism, can mechanical commutation, deleted electrical equipment commutation part, and increased the stability of electric system.Most importantly left out the frequency converter of functional performance less stable in the open air.Can realize that the suspension point zero velocity starts.And the crank of crank and rocker mechanism is provided with three crank pin holes, by the position of change crank-pin, to change the stroke of oil pumper.Can prevent simultaneously the disconnected serious consequence that is caused of sucker rod effectively.When sucker rod in the well breaks bar, polished rod load reduces suddenly, even be zero, and the counterweight of back is constant, the counterweight of back can fall suddenly, if the counterweight of common tower shelf type oil pumping machine will pound, and the mechanical commutation reducing tower shelf type oil pumping machine has been because of having adopted crank and rocker mechanism, and the characteristic of crank and rocker mechanism has stoped the generation of this situation.
8, the utility model has adopted three asynchronous machines of sturdy durable Y series, and it is furnished with one group of belt pulley, changes the size of belt pulley, can change the oil pumping frequency of oil pumper.Hand-operated brake mechanism can control oil pumper to be had under any state and can quit work.Made things convenient for that oil pumper adds, unloaded.
9, the utility model adopts the PLC programmable logic controller,, the oil pumping of accurately controlling oil pumper is dynamic, it is reasonable in design, noise is low, easy making, versatility is good, applicability is strong, be applicable to the oil pumping work under any working environment in land, be easy to promote that society and economic benefit are good.
Four. description of drawings:
Fig. 1 is the structural representation of mechanical commutation reducing tower shelf type oil pumping machine;
Fig. 2 is the vertical view of mechanical commutation reducing tower shelf type oil pumping machine shown in Figure 1;
Fig. 3 is the structural representation of power assembly shown in Figure 1;
Fig. 4 is the vertical view of power assembly shown in Figure 3;
Fig. 5 is the sectional drawing of cylinder shown in Figure 4;
Fig. 6 is preceding suspender belt winding schematic diagram when polished rod load is up;
Fig. 7 is back strap winding schematic diagram when polished rod load is up;
Fig. 8 is preceding suspender belt winding schematic diagram when polished rod load is descending;
Fig. 9 is back strap winding schematic diagram when polished rod load is descending;
Figure 10 is the structural representation of speed increaser shown in Figure 1;
Figure 11 is the cross-sectional view of speed increaser shown in Figure 10;
Figure 12 is the structural representation of counterweight assembly shown in Figure 1;
Figure 13 is the vertical view of counterweight assembly shown in Figure 12;
Figure 14 is the structural representation of lubricated box shown in Figure 13;
Figure 15 is the left view of lubricated box shown in Figure 14;
Figure 16 is the vertical view of lubricated box shown in Figure 14;
Figure 17 is the sectional structure chart of back strap joint shown in Figure 12;
Figure 18 is the vertical view of back strap joint shown in Figure 17;
Figure 19 is the structural representation of semi girder shown in Figure 1;
Figure 20 is the vertical view of semi girder shown in Figure 19;
Figure 21 is the structural representation of front jocket wheel shown in Figure 19;
Figure 22 is the structural representation of back shown in Figure 1 guide wheel;
Figure 23 is the syndeton schematic diagram of polished rod eye assembly shown in Figure 1;
Figure 24 is the plan structure figure of the syndeton of polished rod eye assembly shown in Figure 23.
Five. the specific embodiment:
Embodiment one: referring to Fig. 1-Figure 24, and among the figure, 1-base assembly, 2-power assembly, the 3-pylon, 4-counterweight assembly, 5-back strap, guide wheel behind the 6-, suspender belt before the 7-semi girder, 8-, 9-polished rod eye assembly, 10-hand-operated brake mechanism, 11-bearing support, 12-main shaft, the 13-cylinder, 14-bearing support, 15-belt, the 16-reducer pulley, 17-reducer, 18-crank-pin, the 19-crank, the 20-motor, the 21-connecting rod, the 22-rocking bar, the 23-speed increaser, 24-bolt, 25-pressing plate, the 26-upper box, the 27-lower box, 28-imports gear, the 29-power shaft, 30-idler gear, 31-jackshaft, the 32-output shaft, 33-suspender belt joint, 34-guide upright post, 35-lubricates box, 36-counterweight upper box, 37-counterweight auxiliary box body, the 38-connecting bolt, the 39-bearing pin, 40-lubricates box body, the 41-cowl, 42-clamping plate, 43-directive wheel, the 44-guide wheel shaft, 45-bearing, 46-bearing, the 47-bearing cover, 48-directive wheel, 49-bearing cover, the 50-guide wheel shaft, 51-oil nozzle, 52-bearing, the 53-front jocket wheel, 54-gland, 55-semi girder body, 56-polished rod eye assembly, 57-bearing pin, 58-gland, 59-polished rod eye main body, 60-motor pulley, 61-shaft coupling.
The mechanical commutation reducing tower shelf type oil pumping machine contains pylon 3, base assembly 1, semi girder 7, back guide wheel 6, counterweight assembly 4 and power assembly 2.Power assembly 2 is made up of bearing support 11, main shaft 12, cylinder 13, bearing support 14, belt 15, reducer pulley 16, reducer 17, crank-pin 18, crank 19, motor 20, connecting rod 21, rocking bar 22, speed increaser 23, motor pulley 60, shaft coupling 61 and hand-operated brake mechanism 10.Wherein, motor 20 joins with reducer 17 by motor pulley 60, belt 15, reducer pulley 16, and reducer 17 is connected with speed increaser 23 by crank and rocker mechanism (crank-pin 18, crank 19, connecting rod 21, rocking bar 22); Speed increaser 23 joins by shaft coupling 61 and main shaft 12, and shaft coupling 61 is the resilient key gear coupling.Cylinder 13 is fixed on the main shaft 12 by key, and main shaft 12 is supported and is fixed on the base assembly 1 by bearing support 11, bearing support 14.Motor 20 is connected (not drawing among the figure) with controller, controller adopts the PLC programmable logic controller, and the oil pumping of accurately controlling oil pumper is dynamic, and this controller also is provided with wireless remote sensing system, can realize Long-distance Control, the hand-held programmer gets final product the duty of remote wireless control oil pumper; Suspender belt cannelure and back strap cannelure before being respectively arranged with on cylinder 13 outer round surface, preceding suspender belt 8 one ends are fixed in the preceding suspender belt cannelure, its other end passes from pylon 3, walks around the front jocket wheel 53 on the semi girder of installing on pylon 3 tops 7, is connected with polished rod eye assembly 9 again; Back strap 5 one ends are fixed in the back strap cannelure, and its other end passes from pylon 3, walk around the back guide wheel 6 that install on pylon 3 tops, and last and counterweight assembly 4 joins.The rail assembly that is provided with on counterweight assembly 4 and the pylon 3 is slidingly matched, and hand-operated brake mechanism 10 is installed in the speed end of reducer 17, and its manual operation section is installed on the base assembly 1.
Counterweight assembly 4 is a fabricated structure, is formed by connecting (being three of upper, middle and lower among the figure) by a plurality of ballast boxes, can increase and decrease; And counterweight assembly 4 is provided with lubricated box 35, and lubricated box 35 is clamped on the guide upright post 34, can slide up and down along guide upright post 34, is provided with lubricating grease in the lubricated box 35, on the contact surface of lubricated box 35 and guide upright post 34 the lubricating grease open-work is set.
Six roots of sensation bolt is passed through in pylon 3 tops in semi girder 7 rear ends.Be respectively arranged with two preceding suspender belt cannelures and two back strap cannelures on cylinder 13 outer round surface, the suspender belt cannelure is all fixedlyed connected with an end of a preceding suspender belt 8 before each, and each back strap cannelure is all fixedlyed connected with an end of a back strap 5; Guide wheel on the semi girder 7 is the two-wheel groove, is complementary with two preceding suspender belts 8 respectively.
Cylinder 13 is a split-type structural, is made up of two cylinder splits, suspender belt cannelure and back strap cannelure before being provided with in each cylinder split.Cylinder 13 also can be an integral structure, is respectively arranged with two preceding suspender belt cannelures and two back strap cannelures on its circumferential surface.Determine as required.
Before suspender belt 8 and back strap 5 oppositely be wrapped on the cylinder 13, and two preceding suspender belts 8 are left-handed to be wrapped in the preceding suspender belt cannelure of two inboards, two back strap 5 dextrorotation are wrapped in the back strap cannelure in two outsides; Be milled with the plane on the preceding suspender belt cannelure of cylinder 13 and the outer round surface of back strap cannelure, preceding suspender belt 8 and back strap 5 are fixed on this plane by inner bolt 24 and pressing plate 25 respectively, and the outer round surface of pressing plate 25 outer round surface and preceding suspender belt cannelure and back strap cannelure is complementary.
Pylon 3 is a split modular structure, is formed by connecting by at least two pylon splits, and be two among the figure, also can be elected to be three, four, five or six or the like as required.
Speed increaser 23 is one group of gear train that can change output speed; Reducer 17 is the two arc cylinder formula reducers of two-stage shunting formula.Motor 20 is furnished with one group of belt pulley, and the size of change belt pulley is to change the oil pumping frequency of oil pumper; Be provided with three crank pin holes on the crank 19 respectively, the position of change crank-pin 18 is to change the stroke of oil pumper.
Operating principle:
At first, the utility model has utilized the characteristic of crank and rocker mechanism, has realized the automatic reverse of oil pumper.
Moreover the required starting torque of the utility model is little.Required starting torque size during startup also is the size of the required consumed power of decision.The rule mark of mechanical commutation reducing tower shelf type oil pumping machine motion is almost identical with beam pumping unit.Motion process quickens to start for the upstroke bottom dead centre, and------beginning the motion of accelerated motion speed to down stroke---to the middle motion that reduces speed now of upstroke to the middle motion that reduces speed now of upstroke, goes round and begins again, is similar to simple harmonic motion.All give long acceleration time for last bottom dead centre.
According to the characteristic of crank and rocker mechanism, when upstroke started, it was very slow just to have begun speed increaser 23 speed of stirring, it is also very little that the quilt of this moment is dragged the primer acceleration, and the fluctuation of electric current is also very little, along with the motion of crank and rocker mechanism, speed is constantly accelerated, and this moment, motor 20 was stable loading procedures.This moment is single from motor 20 aspects, has eliminated part and has been dragged the required energy consumption of primer momentum conversion.If allow motor 20 locate at the uniform velocity under the state always, also will allow dragged the required power of primer momentum change will be very big:
F-Mg=MV/t
M weight quality
V weight speed
The F weight acts on power on the lifting rope
G acceleration of gravity
Required time when t reaches a constant speed
Inevitable electric current can be very big, and motor 20 in-fightings must increase.Must extend the acceleration time in order to reduce this in-fighting.In a segment distance of before top dead center, must slow down; Otherwise, when upper dead center position, can not stop oil pumper and drag primer and move upward; Crank and rocker mechanism has this quickreturn characteristics, can solve this problem, and 20 pairs of oil pumper actings of motor.During down stroke, counterweight part is heavy behind the oil pumper, and what oil pumper was carried is the weight difference of back counterweight and front end, that is to say motor 20 in the action that repeats the oil pumper upstroke, and its required electric current reduces, so it is energy-conservation on the one hand for this.
Another energy-conservation reason is: cylinder 13 twines suspender belts realizes that cylinders 13 are (as the reducing of Fig. 6-Fig. 9).During upstroke, twining on the weighting distribution wheel has expired suspender belt, and the lifting wheel suspender belt is all emitted, and causes the wheel footpath of this moment not waited, and back counterweight is big to the arm of force of bottom main shaft effect, and the arm of force of front end is less.Front and back to the moment that main shaft produces are:
M
After=m
AfterG (r+n
AfterD)
M
Before=m
BeforeG (r-n
AfterD)
M
AfterThe moment that back counterweight produces on main shaft
M
BeforeThe moment that back counterweight produces on main shaft
m
AfterBack weight mass
m
BeforeDrag the primer quality
R main shaft radius
n
AfterSuspender belt twines the number of plies
D suspender belt thickness
Then the moment that this moment, the back counterweight produced is maximum, has reduced the moment of torsion that reducer 17 will be exported, and has reduced motor 20 required electric weight.The arm of force of rear portion counterweight is reducing when rising, and the front end arm of force is increasing, and oil pumper is simultaneously also in unloading.To top dead-centre is front end arm of force maximum, rear end arm of force minimum; Repeated the operating mode of top dead-centre conversely.It has all reduced motor 20 required electric currents last bottom dead centre, so it is energy-conservation.
During work, cylinder 13 rotates, and drives the oil pumper motion.The commutation of oil pumper is to reach by crank and rocker mechanism.When the needs oil pumper is stepped down, remove the bolt on the semi girder 7, to promoting semi girder 7, make it to reach the oil pumper operation requirement of stepping down with the well head direction.
Embodiment two: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is: pylon is a monolithic construction, without dismounting, simplifies construction sequence, is applicable to low pylon occasion.
Change power assembly concrete structure, change crank and rocker mechanism concrete structure, change the concrete structure of cylinder, and the concrete structure that changes speed increaser can form a plurality of embodiment, is common variation of the present utility model, do not describe in detail one by one at this.