CN85103185A - Long stroke pumping unit - Google Patents
Long stroke pumping unit Download PDFInfo
- Publication number
- CN85103185A CN85103185A CN85103185.4A CN85103185A CN85103185A CN 85103185 A CN85103185 A CN 85103185A CN 85103185 A CN85103185 A CN 85103185A CN 85103185 A CN85103185 A CN 85103185A
- Authority
- CN
- China
- Prior art keywords
- pulley
- pylon
- hole
- fixed
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
Long stroke pumping unit, comprise one stand on base pylon and across balancer weight---the polished rod system of the big head sheave of tower top both sides.This pumping unit use motor as power source, motor perseverance to rotation, produce the linear reciprocating motion of approximate simple harmonic quantity rule by a cover crank linkage mechanism, and the to-and-fro motion stroke is amplified and pass to balancer weight---polished rod system by a mechanism that constitutes by fixed pulley group and removable sheave block.Length of stroke can realize easily by changing the crank active length, also can change the pulley quantity of participation work so that change length of stroke in a wider context.
Description
The present invention and pumping unit, it is relevant particularly not have the beam type long stroke pumping unit.The present invention adopts a motor as power source, a drag link that is arranged symmetrically in pylon two outer lower portion and is synchronized with the movement all the time is used to produce linear reciprocating motion, its characteristics of motion is approximately simple harmonic motion, an enlarger that is made of fixed pulley group and movable pulleys group amplifies the stroke of the linear reciprocating motion of the approximate simple harmonic quantity of drag link generation at double, magnification factor is relevant with the pulley number of participation work in each sheave block, pass to then and the joining balancer weight of this enlarger one polished rod system, make polished rod do the long stroke to-and-fro motion, its rule is similar to simple harmonic motion.The active length of crank can be adjusted easily, to obtain needed stroke.If change the pulley number of the work that participates in the stroke enlarger, then stroke can change in a wider context.The bel-drivenn transmission recently realizes between motor speed or change motor and the retarder by changing in the variation of polished rod strokes per minute.
Before being described in detail the present invention, recall relevant prior art earlier, be beneficial for understanding and suitably estimating the present invention.At present, mainly use pumping unit can not outwards pump the oil well of blowing from those.Along with the passing of exploitation time, the oil well liquid level of old filed constantly descends and needs exploitation to contain than the oil in the deep stratum, requires the following pump degree of depth of pumping unit constantly to increase, thereby has produced new technical barrier.At first be the pump efficiency problem,, under deadweight and loading, will produce elastic elongation because be elastomer with metal sucker rod.When sucker rod was up and down reciprocatingly worked, this elastic elongation can cause loss of plunger stroke.The following pump degree of depth is big more, and the effective stroke loss is then big more, the oily efficient of pump is also low more.Yet if strengthen the working stroke of pumping unit, loss of plunger stroke will reduce relatively.Therefore this occasion more satisfactory be to use long stroke pumping unit as far as possible.In addition, for the exploitation in highly aqueous field and high viscosity oil field, strengthen the pumping unit stroke effect also fine.Under the same displacement condition, the stroke that increases pumping unit means can correspondingly reduce strokes per minute, speed and acceleration, and this has produced many other benefits again.At first, because sucker rod is to work under changing load, its fatigue life is relevant with the stress-number of cycles that is experienced, reduce strokes per minute mean reduce certain during in stress-number of cycles, increased the fatigue life of sucker rod.In addition, underspeed and the acceleration abrasion that helps to slow down sucker rod and cylinder barrel, and stroke strengthens, and makes again the abrasion of cylinder barrel internal surface be dispersed on the bigger area, rather than concentrate on a less zone that this also helps to prolong the working life of cylinder barrel.In brief, increase stroke, can improve volumetric efficiency and prolong part working life.
Long stroke pumping unit can be divided into two big classes by its structure, i.e. slide beam and no beam type.The slide beam long stroke pumping unit, wherein a kind ofly see U. S. Patent 4,306, No. 463, have a hinged walking beam that on derrick post, can freely swing, an end of beam has balancer weight, the other end has a horse head, polished rod connects with horse head by rope, by motor or hydraulic mechanism walking beam is swung up and down, and moves up and down thereby drive polished rod.The shortcoming of beam pumping unit is that structure is compact inadequately, heavy, floor space is bigger, and the spin balancing piece produces bigger centrifugal force etc.
No beam type long stroke pumping unit generally all has a upright pylon, tower top has a rotating wheel, the rope of binding polished rod or belt are taken turns on one side from this and are hung down, on rope that the another side of trailing wheel hangs down or the belt weight equalizer is installed, the capstan by motor or fluid motor-driven drives the polished rod motion directly or indirectly.The commutation of stroke realizes by motor or oil hydraulic motor backward rotation.Deceleration during near the stroke end points or buffering also realize by electric or hydraulic control.
U. S. Patent 3,285,081 has shown a kind of no beam type long stroke pumping unit, it comprises a pylon, be fixed on the drum on pylon top, hanging the balancer weight and the bar rope that move in opposite directions on the drum, the drive unit that makes the forward and reverse rotation of drum by one can forward and reverse rotation motor and the rope of retarder and connection reducer output shaft and drum form.Its length of stroke depends on the number of turns that motor turns in this one-stroke, and deceleration the when commutation of polished rod up-down stroke and commutation and buffering are by realizing with machinery-electric means control motor commutation and start and stop.
The prior art relevant with the present invention also can be consulted U. S. Patent 3,538, and 777,3,695,17,3,771,609,4,052,907,4,062,640,4,388,837,4,391,155.
That main purpose of the present invention provides is a kind of complete novelty, simple in structure, easy to operate, for ease of maintenaince, take up an area of less, cost is low, the no beam type long stroke pumping unit of reliable operation.The vertical pylon that stands on it comprises a base and is fixed on base, at tower top a rotating big head sheave is arranged, weight-balancing device links to each other by the wire rope that strides across big head sheave with polished rod, and they just lay respectively at the back and the front of pylon respectively on the both sides of big head sheave.This novel long stroke pumping unit uses multispeed motor as power source.The motor perseverance is to rotation, and by the changeable length stroke to-and-fro motion of the pure mechanical device realization of cover polished rod, the characteristics of motion of polished rod is approximately harmonic motion.Produce the reciprocating pure mechanical device of long stroke and be made up of two-part, one is drag link, and permanent the drive to the motor that rotates-retarder system produces the to-and-fro motion that is similar to the simple harmonic quantity rule on the base of pylon bottom by being placed in for it.Motion is delivered to another mechanism, i.e. stroke enlarger then.The stroke enlarger is by being installed in being formed by fixed pulley group and movable sheave group and by the wire rope that certain way is wrapped on these pulleys of pylon inside.In the stroke enlarger, amplified at double from the to-and-fro motion of the approximate simple harmonic quantity of drag link.This stroke enlarger can be along bi-directional power.Thereby passing to balancer weight-polished rod system drive polished rod of crossing over respectively on the big head sheave of tower top both sides again through the long stroke motion that the stroke enlarger amplifies moves up and down.Length of stroke is regulated and can be realized by the active length that changes crank.If participate in the pulley number of work in the change sheave block, then the changes stroke scope is bigger.
Another object of the present invention provides a kind of safety installations that long stroke pumping unit adopted by manufacturing of the present invention.In case some component wear of pumping unit, this device can be made corresponding reaction at once, protects whole pumping unit.For example, polished rod or connect polished rod and during the wire cable rupture of balancer weight, safety installations should move at once and stop weight-balancing device because self gravitation effect and degeneration downwards, and cut off the electricity supply simultaneously machine is shut down, and prevent to produce further destruction; Perhaps cut off the electricity supply rapidly during too loose or fracture when the wire rope of stroke enlarger, the protection pumping unit is not damaged.
A further object of the invention provides and a kind ofly can make the tight rope device that keeps certain tension force by the wire rope of the stroke enlarger in the long stroke pumping unit of manufacturing of the present invention.Because only remain certain tension force, just can guarantee exactly the linear reciprocating motion of the approximate simple harmonic quantity of drag link generation to be amplified and transmit this moving along both direction.
The present invention has a purpose to provide the card deragger that long stroke pumping unit of the present invention uses again.The card deragger is installed on the balancer weight dolly, tightly blocks the suitable part of stroke enlarger wire rope, guarantees that polished rod moves up and down according to the motion of the approximate simple harmonic quantity rule of previous mechanism generation.
In the accompanying drawings, the structure of specific embodiment according to the invention is disclosed, wherein:
Fig. 1 is the side schematic view of this pumping unit;
Fig. 2 is the principle schematic of stroke enlarger among the present invention;
Fig. 3 is the principle schematic of stroke enlarger in the specific embodiment of the present invention;
Fig. 4 is that the another kind of stroke enlarger among the present invention is arranged principle schematic;
Fig. 5 is the schematic representation of euphroe;
Fig. 6 is the perspective view of rope locking machine;
Fig. 7 is the perspective view of balancer weight dolly and safety installations;
Fig. 8 has shown movable pulley combination in the stroke enlarger shown in Figure 3;
Fig. 9 is mounted in the schematic representation of the safeguarding mechanism on the balancer weight dolly;
Figure 10 has shown the structure of big head sheave;
Figure 11 is the perspective view of rope hanger;
Figure 12 has shown the slot part structure of stroke enlarger middle pulley;
Figure 13 is mounted in the scheme of installation of the safety installations in the stroke enlarger.
Now, with reference to each accompanying drawing and reference number, Fig. 1 particularly, multispeed motor (101) is housed on the base of long stroke pumping unit (100), drive retarder (102) with output shafts by belt transmission, pylon (20) is vertically mounted on the base (100), and retarder (102) comprises that braking device is positioned on the base of pylon bottom, and its output shaft that stretches out from both sides (102a) stretches out near the bottom from the pylon both sides respectively.Pylon (20) is along pylon three (except that back) operating platform (201) of being with guardrail to be housed near the tower top place by the elongated cube frame that four root posts and reinforcement gusset are welded, can use for the maintenance and debugging personnel, the front portion of platform is hinged, can upwards dig in case of necessity and abdicate the well workover space.The staircase at top in addition can go directly in both sides on the pylon.The pylon top is installed with rotary big head sheave (30), and counterweight block (401) is placed on balancer weight dolly (40) lining.This balancer weight dolly can be along rear rail (202) vertical up-or-down movement that is installed on the pylon rear column, and connects with the rope hanger (120) and the polished rod (110) of pylon front by the wire rope (14) that strides across big head sheave, constitutes balance sysmte.There is the equilibrium block of the various weight of a cover can supply combination in any.The selection principle of counterweight is, makes the gross weight that is suspended in wire rope (14) rear end be a bit larger tham the gross weight of the weight that the wire rope front end hangs, and its difference is preferably 1/2nd of oil column weight.In other words, the balancer weight dolly adds that the gross weight of weight equalizer piece should add the weight of weight sum more than half oil column of rod string in oil than rope hanger.Displacement leading screw (303) is equipped with in bearing (301) bottom of big head sheave (30), and rotational lead screw (303) can make big head sheave move forward and backward.
The stroke enlarger of being made up of last fixed pulley group (51), following fixed pulley group (53) and movable sheave group (55) (50) is installed between pylon inner tip and the lower end.These three sheave block are linked up in a certain way by steel cable (57).Running block is connected with the transverse arm (61) of connecting rod (60), two cranks (63) are installed in respectively on the reducer output shaft two ends of stretching out to both sides from the pylon bottom, two cranks remain parallel, connecting rod (65) one ends are hinged on the crank, and the other end is hinged respectively with the two ends of the transverse arm (61) that the rectangular window of reserving from the pylon bi-side stretches out.Roller (559) is housed on the framework of running block (551), and this sheave block can slide on the fromer rail (203) of pylon vertically.The rope locking machine (41) that is installed on the balancer weight dolly in position blocks the part (57a) of wire rope (57) between upper and lower fixed pulley group.Like this, when the motor perseverance when rotating, just can drive polished rod and pump as long stroke.The polished rod strokes per minute changes and can realize by changing motor speed and belt pulley gear ratio.Length of stroke is regulated and can be realized by the mode that changes connecting rod (65) and crank (63) link position.If the pulley number of selecting to have the sheave block of different pulley numbers or changing the work that participates in the sheave block then can change stroke of polished rod length in a wider context.When pumping unit starts, should make crank be in the plumb position.
The schematic diagram of the stroke enlarger that Fig. 2 is made up of sheave block.By four sheave block A, B, C and D that are made up of same quantity pulley, each pulley axis is parallel to each other, and wherein C and D are the static pulley groups, and A and B are running blocks, and they join together and can move between C and D.Steel cable links together these sheave block in the following manner: wire rope one end is fixed, and the other end is walked around the pulley a on the A group earlier
1, walk around the pulley c in the C group then
1, return the pulley a that walks around after A organizes in the A group
2, and then return sheave block C and walk around pulley c
2, so continue until last pulley c on intact C group
nInto fixed pulley group D is guided wire rope in the back, walks around pulley d
nAfter guide sheave block B again into, walk around pulley b
n, return static pulley group D then and walk around pulley d
N-1, so continue up to wire rope at last around the pulley b that finishes sheave block B
1After, wire rope is tightened the back fix.During winding, each section of wire rope crossed one another, in order to avoid increase resistance to motion and wire rope abrasion.Obviously, in this mechanism that forms by sheave block, if running block A and B move a bit of apart from S to a certain direction (such as to the right) together
0, then the total length of each section silk rope between sheave block A and the C has increased 2nS
0, and the quantity that the total length of the wire rope between sheave block B and the D shortens also equals 2nS just
0Like this, extra wire rope has replenished the length of the required increase of wire rope between sheave block A and the C just between sheave block B and the D.Otherwise, when running block A and B are moved to the left apart from S
0The time, the variable quantity of wire rope total length also is 2nS between sheave block A and C and sheave block B and the D
0, only in this case, wire rope total length between sheave block A and the C reduce and between sheave block B and the D total length of wire rope increased.Therefore, at running block displacement distance S
0After, between sheave block C and D, more precisely be positioned at pulley c
nAnd d
nBetween wire rope part (P) the displacement S that goes up any point (K) be S
02n doubly, i.e. S=2nS
0Obviously, if with on (P) section of wire rope certain a bit (K) go to affect other can reciprocating object, then the stroke of this object also is input displacement S
02n doubly.Like this, we have obtained a stroke enlarger, it can be enlarged into original 2n to the input straight-line displacement doubly.An important feature of this enlarger by the wire rope transmission is can be in transferring power on the reciprocal both direction, and not as wire rope mechanism transferring power like that in one direction.
Fig. 3 is the schematic representation of a kind of arrangement mode of each sheave block in the aforesaid stroke enlarger that adopts in the long stroke pumping unit made in accordance with the present invention.The working sheave number is 2 in each pulley, so magnification factor is 4.The downslide wheels (53) that are fixed on retarder top in the pylon comprise one in order to the downslide wheels are fixed on bearing (531) and two pulleys (533 that are enclosed within on the axle (532) that is installed on the bearing on the pylon, 534), independent rotation can be distinguished in pulley (533) and (534), wherein the pulley that diameter is bigger (533) is located substantially in the median plane of pylon, and the less pulley (534) of another diameter is amesiality.Top sheave group (51) is fixed on the interior top of pylon by its bearing (511), be fixed on two pulleys (513) and (514) and a upper saw pulley (515) have been installed on the pulley spindle (512) on the bearing (511), they all can be on axle independent rotation, the diameter of its middle pulley (513) is big and identical with large pulley (533) diameter in the downslide wheels (53), it also is located substantially in the tower center face, and the pulley of another biasing (514) diameter is identical with pulley (534) diameter.Upper saw pulley (515) is installed in the outside of pulley (514).Can comprise framework (551) along the movable pulley combination (55) that fromer rail on the pylon (203) moves back and forth between last fixed pulley group (51) and following fixed pulley group (53), the pulley spindle of two installations parallel to each other (552) and (553), but overlapping the pulley (554 of two independent rotation on every axle respectively, 555,556,557), their diameter and last, the less pulley (514) of diameter is identical with the diameter of (534) in the following fixed pulley group, two pulleys (554) on its axis (552), (555) basically with last fixed pulley group in two pulleys (513) and (514) aim at two pulleys (556) of axle on (553) respectively, (557) basically with two pulleys (533) of downslide wheels, (534) aim at respectively.These four pulley spindles (512,532,552,553) and retarder (102) output shaft keeping parallelism and coplane.Wire rope (57) one ends are fixed on the base by euphroe (501), walk around all pulleys (557), (534), (553), (533), (513), (554), (514), (555) in the mechanism successively in foregoing mode then, walk around upper saw pulley then and also be fixed on the pylon by another euphroe (502).The diameter of pulley (513) and (533) is more greatly in order to prevent the mutual friction and connect for rope locking machine with wire rope and reserve enough spaces mutually of each section of wire rope.On the framework (551) of movable pulley combination some rollers are housed, the framework of their bootable movable pulley combinations moves in the fromer rail on pylon.Framework (551) is connected with transverse arm (61) by spherical bearing.The wire rope friction is decreased and the reduction noise in order to reduce, and each pulley slot part has all been inlayed a circle oil resistant rubber (590), as shown in figure 12.
Fig. 4 is the scheme that the another kind of each sheave block arrangement mode in the stroke enlarger can be taked.Its magnification factor also is 4.Except the arrangement mode of movable pulley combination middle pulley was different with foregoing (Fig. 3) mode of execution, the remaining part feature of these two kinds of schemes was identical, had therefore adopted identical reference number.In this programme, the pulley that four diameters are identical in the movable pulley combination (554 ', 555 ', 556 ', 557 ') be arranged on the axle.But they are independent rotation all, and aims at the pulley of going up in fixed pulley group and the following fixed pulley group respectively, and the canoe of wire rope is also identical.
Pulley in the sheave block can also have other arrangement scheme, but must all fall within the scope of the present invention.
Tight rope device (501), (502) as shown in Figure 5, are installed among the stroke enlarger, and it can make wire rope (57) keep certain tension force, and can absorbing vibration.It is made up of truckle (701), cannulated sleeve (702), hollow draw-bar (703), end face bearing (704), pressure spring (705), locking nut (706), adjusting screw rod (707), bearing (708) and hollow sleeve cover (709).
Cannulated sleeve (702) is a band bore hole and garden cylindrical sleeve end sealing, has on its closed end along the outwardly directed ear seat of sleeve direction of axis line, and opening end has internal thread.Hollow draw-bar (703) is the elongate rod of a hollow, and the one end has garden dish type flange, on the bar the other end internal surface screw thread is arranged.Flange can slide in the bore hole of cannulated sleeve.
Truckle (701) is hinged on the ear seat of cannulated sleeve (702), the flanged (FLGD) end of hollow draw-bar (703) is put into sleeve (702), stretch out the hole, concentric garden of the other end on this socket cover (709) and be connected with adjusting screw rod (707) on being hinged on drag link bearing by the tail end screw thread, end face bearing (704) and pressure spring (705) are contained in this cannulated sleeve and are enclosed within on the hollow draw-bar (703), an end face of this bearing leans against on the flange plate, the other end contacts with pressure spring (705), and this spring the other end withstands on the interior edge face of socket cover.Wire rope one end of stroke enlarger is enclosed within truckle (701) and goes up and fix, and drag link bearing (708) is fixed on base or the pylon.Rotation hollow draw-bar (703) regulates the tight power of giving in the wire rope, locking nut (706) locking then.
Connecting rod is arranged symmetrically in the bottom outside the pylon bi-side, is connected with reducer output shaft by key.Their plane of movement is parallel with the median plane of pylon.Each connecting rod is made up of a crank and a connecting rod, the two ends of transverse arm (61) respectively with two rod hinge connections.The mounting hole site that crank body (63) cooperates with reducer output shaft obtains torque by key joint from reducer output shaft near an end of crank body, two cranks remain parallel when rotating.Away from an end of mounting hole one row's pin-and-hole is arranged on the crank body, select for use when promptly changing stroke of polished rod for the active length that changes crank, the center line of this row's pin-and-hole and the center line of mounting hole are parallel to each other and all be positioned at the center symmetry plane of crank body.Connecting rod (65) is the elongate rod with garden tee section, and amplify at the two ends of bar, and every end has a through hole, and the center line in two holes is vertical mutually.Transverse arm (61) is an elongated thin walled structures with rectangular cross-section, its middle part has a bearing that raises up to link to each other with movable pulley combination framework by spherical bearing, stretch out the rectangular fenestra from the pylon bi-side respectively at the two ends of transverse arm, symmetry has vertical U-shaped breach on its end face, on the breach wall cross through hole is arranged.One end of connecting rod (65) stretches among the breach of a certain end of transverse arm and is enclosed within rotationally on the bearing pin that is fixed between the breach wall, and the other end is connected with certain pin-and-hole on the crank body by bearing pin.
The stroke enlarger is connected with balancer weight-polished rod system by rope locking machine.Rope locking machine comprises rope locking machine fitting seat (410) as shown in Figure 6, two clamping plate (411), (412).One of them clamping plate (411) are fixed together with fitting seat (410), another piece clamping plate (412) removably use bolt (414) to connect with fixing clamping plate (411), have the horizontal key (415) that embeds second splint respectively to bear the shearing of Vertical direction between two clamping plate.Be embedded with the fixture blocks (416) of the band tooth line on some outstanding these planes on two clamping plate on the relative plane respectively, in its tooth line direction and the wire rope each strand turn round around direction consistent.The rope locking machine fitting seat is fixed by bolts on the balancer weight dolly (40), the P section of the wire rope of the said stroke enlarger in front is passed in the middle of being embedded in the fixture block on the second splint, tight a bolt (414), just wire rope and rope locking machine seat and balancer weight dolly are firmly connected together.Like this, behind the motor start-up of long stroke pumping unit, motion just is passed to balancer weight-polished rod system.
Weight-balancing device as shown in Figure 7, is made up of balancer weight dolly (40) and safeguarding mechanism (45) and the counterweight block (401) that is placed in the balancer weight dolly.The shape of balancer weight dolly resembles the square box of a uncovered, and two middle side edge of box have vertical column (402) column top that one part of amplifying is arranged, and have rectangular hole on it.The steamboat (405) that stretches in rear rail on the pylon (202) groove is equipped with in the both sides of balancer weight dolly, and rope locking machine (41) is installed on the front of dolly.Dolly is connected with wire rope with polished rod (112) with the rope hanger (120) of big head sheave (30) opposite side by the safeguarding mechanism (45) that stretches in its two heel posts top rectangular hole.Counterweight block is placed in the dolly, counterweight is decided on the load of uphole end, the weight series of equilibrium block is respectively 3 tons, 2 tons, 1 ton, half ton and 10 kilograms, therefore can adjust counterweight at any time exactly, make Equilibrator, comprise safeguarding mechanism, weight ratio big head sheave opposite side rope hanger and the weight of weight sum heavily about half oil column of sucker rod in oil.Like this, the size of required tractive force all is substantially equal to the weight of half oil column during upper and lower stroke, makes the duty ratio of motor more even.
Fromer rail on the pylon (203) and rear rail (202) all are dismountable, are convenient to adjust and maintenance.Fromer rail is made up of two channel steel shape elements, is installed in abreast respectively on the pylon front column, and its groove face opening is relative, as shown in Figure 8.Rear rail is installed in respectively on the pylon rear column back by two I-steel or channel-section steel, and the web of two I-steel is parallel to each other.Respectively have the Chang Yuan hole that a row arranges along its length on their the web center line, as shown in Figure 9.
Safety installations among the present invention has two covers, and a cover is installed in balancer weight-polished rod system another set of being installed in the stroke enlarger.As shown in Figure 9, be installed in safety installations (45) in balancer weight-polished rod system between two root posts of balancer weight dolly.It comprises its end face central authorities the crossbeam (451) of one vertical through hole is arranged and be installed in this crossbeam through hole and crossbeam below safety pin ejecting mechanism (46).Crossbeam is placed in the middle of balancer weight dolly two root posts, and its two ends are stretched in the rectangular hole in the enlarged portion of column top, and two suitable block rubbers (47) of thickness are clipped between the end face of crossbeam end face and column top rectangular hole.Make between the top of rectangular hole on the end face of crossbeam and the column and keep certain distance.The safety pin ejecting mechanism comprises the safety pin that is configured in the cinclides of crossbeam both sides and controls the leverage that safety pin ejects, it comprises that one one end has the push rod (451) greater than the flange of crossbeam end face central vertical through-hole diameter, convex parts (452) with the axis parallel of bar is arranged in the place, the exterior edge face of this flange, the other end of this push rod has the means that are connected with a truckle, spring (453), (454), (455), tegillum (456) and lever (457).Push rod (451) does not have an end of flange to be upward through the through hole at crossbeam middle part, overlapping pressure spring (453) on the bar, one end of spring is pressed on the flange, the other end withstands on the lid (456) that covers on the through hole of crossbeam middle part, the elastic force of spring makes push rod that the trend of downward motion be arranged, the upper end of stretching out of bar and truckle (458) are hinged, walk around truckle (458) from the wire rope that big head sheave (30) is got off.The back knotting.Keep in touch the rear end of the convex parts of push rod bottom and lever (457), and the middle part of lever (457) is hinged on crossbeam, and its front end has a claw to lower convexity.During proper functioning, act on making a concerted effort that lever rear end makes it to move downward much smaller than the elastic force of pressure spring (454), it imbeds claw to stop safety pin outwards to eject in the translot on the safety pin (459), the convex parts of lever rear end and push rod lower end is kept in touch.Safety pin (459) is gone up the bigger leading portion of diameter and is placed on slidably in the hole of beam side wall, and there is a translot at its rear portion, and the shaft axis of this pin is just in time aimed at the line of centres in the Chang Yuan hole on the rear rail on the pylon (202).The thinner afterbody of safety pin (459) diameter has screw thread, pressure spring (455) is enclosed within on the thinner part of diameter of safety pin, one end withstands on the shoulder at safety pin middle part, and the other end withstands on the crossbeam, and this spring makes pin that the trend of outside ejection be arranged.Nut (460) can limit the distance that safety pin outwards ejects.Have V-shaped groove on the big end end face of safety pin, during installation, make V-shaped groove keep Vertical direction.
During the pumping unit proper functioning, striding across the resistance that the pulling force in the wire rope of big head sheave makes the flange of push rod (451) overcome spring (453) withstands on the lower surface of crossbeam, spring (454) is stuck in the translot of safety pin (459) claw of lever (457), thereby makes safety pin remain on " withdrawal " state.In case polished rod or wire cable rupture, tension force in the wire rope is die-offed, the elastic force that is enclosed within the pressure spring on the push rod (451) is greater than the tension force in the wire rope, promptly promoting push rod (451) moves downward, and then promotion lever (457) makes its front end claw perk, decontrol safety pin (459), safety pin (459) makes the braking of balancer weight dolly, stops its degeneration in rapid certain Chang Yuan hole on both sides ejection and insertion pylon rear rail under spring (455) effect.The kinetic energy of dolly absorbs by damping rubber block (47).Meanwhile, safety pin (459) also can be handled electrical switch and cut off motor power, thereby whole pumping unit is protected.The mechanism design of cutting off the electricity supply gets not only simply but also is ingenious, it comprises that vertically is tightened in the wire on the rear rail inner side surface (480) on the pylon, the central lines in its position and Chang Yuan hole, the upper end of wire is fixed, and the lower end links to each other with an electric interlock switch (not shown).When the outside At time of eject of safety pin (459), before Chang Yuan hole on the insertion rear rail, at first cut off this wire (480), thereby make the interlock switch action cut off motor power.V-shaped groove on the safety pin can prevent that wire is partially sliding.
Another set of safety installations shown in Figure 13 can be cut off the electricity supply at the wire cable rupture of stroke enlarger or when too loose.It comprises a collision block (851) on the cannulated sleeve (702) that is installed in euphroe (501) or (502), this collision block (851) can move with cannulated sleeve (702), with leverage or other a mechanism's (not shown) that is installed in appropriate location on the pumping unit, this mechanism's controllable power switch cuts out.When the wire rope of stroke enlarger during too loose or fracture, cannulated sleeve (702) closes leverage control power switch to the collision block that drag link bearing (708) direction is moved and sleeve moves together under the effect of spring (705).The collision block that is installed on the cannulated sleeve also can directly be controlled motor switch.Before narrated, euphroe can make in the wire rope in the stroke enlarger and keep certain tensioning.When wire rope has smallly when loose, the spring in the euphroe promotes cannulated sleeve (702) and moves, thereby makes wire rope continue tensioning and keep certain tension force.In too loose or when fracture when wire rope, the displacement of cannulated sleeve increases, and suitably adjusts the mutual alignment of collision block and switch (852) (or mechanism of control switch), makes that switch produces action in this case to close motor.Behind the supply disconnecton, the stroke enlarger just rested on the residing at that time position, and balancer weight-polished rod system also can rest on the residing at that time position automatically owing to self is in a basic balance, so entire machine all can be guaranteed safety.In general, the operator should note the tensioning degree of stroke enlarger wire rope, in time regulate tension force of steel wire.Such cover safety installations has been arranged, though since workman's thin right general idea do not find wire rope too loose emit dangerous when continuing to start shooting, also can autostop with assurance safety.
Big head sheave (30) is the wheel of a band spoke as shown in figure 10, is installed in rotation on the bearing (301), and bearing (301) is installed on the tower top flat board.By screw mechanism (302) big head sheave (30) and bearing (301) thereof are moved before and after on this flat board, micro-adjusting mechanism (305) also can about adjust the position of big head sheave and bearing thereof.Big day wheel rim is outer makes flute profile in garden week, and big head sheave wheel face upper edge garden Zhou Fangxiang is equipped with the fixedly through hole of wire rope pressing plate of plurality of rows.The wire rope that connects balancer weight dolly and rope hanger and polished rod strides across big head sheave along race and also in position is pressed on the big head sheave with a pressing plate.Like this, when polished rod and balancer weight dolly moved one on the other, big head sheave was affected forward or backward by wire rope and rotates.The mounting point of pressing plate should be suitable, and when at midstroke, pressing plate should be in the peak place of big head sheave wheel face.
Rope hanger (120) is the flexible link between weight-balancing device and polished rod as shown in figure 11, simultaneously can be for dynamograph is installed.Rope hanger mainly comprises following part: upper body (121), having flat pattern, there is a fixedly through hole of polished rod in central authorities, and bilateral symmetry has two other through hole parallel with central hole; The shape of lower body (122) and upper body (121) are basic identical, but thickness increases greatly, and three holes that through hole is aimed at respectively of three positions and upper body (121) are arranged on it, and there are two apertures the side for the dynamograph effect is installed; Two garden cylindrical sleeve (123) with taper hole put on the end face of the less end of diameter in hole and have several the grooves that radially extend to outer rim, are higher than lowly in the groove bottom, are convenient to rainwater and flow down; After the wire rope that gets off from big head sheave passes the through hole of upper body (121) and lower body (122) both sides respectively, pass two thrust bearings again respectively, little stomidium from cover (123) penetrates again, pass from big end, then end is broken up the back and be cast into one with the zinc that melts, be shaped as the garden taper type, match with the garden taper hole of cover (123).Also have two screw tops (125) to be screwed in the screw of lower body upper-end surface between upper body and the lower body, rotate jackscrew (125) and the upper body can be lifted, be convenient to install dynamograph and carry out indicator diagram mensuration.Polished rod is fixed in the hole of upper body central authorities after passing freely through the through hole of lower body central authorities.The zinc head of end of wire rope that passes freely through the side opening of lower body enters in the taper hole of cover (123), the upper-end surface of cover contacts with thrust bearing (126), the upper-end surface of bearing contacts with the lower end surface of lower body, jackscrew (125) does not bear pressure at ordinary times, and the pressure between the upper and lower body transmits by cover (127).Like this, when the resistance in the well is big, though polished rod and with it fixedly the all-in-one-piece upper body move downward and slow down, lower body and wire rope still can descend by the normal speed of pumping unit, at this moment the distance between upper body and the lower body becomes greatly.Lower body is made and is increased the weight of, and can make wire rope keep tension force like this, makes big head sheave be subjected to the enough moment of rotating forward all the time.Therefore, the wire rope in balancer weight-polished rod system even the down-hole resistance increases, also can keep certain tension force when the polished rod rate of descent slows down no matter all can keep tensioning in upstroke during still in down stroke.This just can go out to jump out or big head sheave stall from big day race from being avoided wire rope.Gutter channel on the cover (123) can make discharges smoothly such as rainwater, prevents the end corrosion.Thrust bearing (126) can be avoided wire rope to reverse knotting and cause rope hanger crooked, also can prevent the polished rod dropout.
Below contrast table help the good effect that illustrates that the present invention is obtained.Wherein the walking beam machine is the CYJ10-3-48B type beam pumping unit that widely adopts at present, and long stroke pumping unit is the long stroke pumping unit of making by the present invention.Test is successively used these two kinds of pumping units instead on a bite oil well and is carried out.
From above data as can be seen, this mouthful well is owing to adopted long stroke pumping unit of the present invention, and the stimulation fluids amount was 68.8 tons in average day, and volume increase crude oil was 10.6 tons in average day, and pump efficiency has improved 39.6%.And balance sysmte is careful adjust after, the current fluctuation value of motor is less than 2 amperes, and to general beam pumping unit, the current fluctuation value just is considered to satisfied less than 7 amperes.
In sum, because novel uniqueness of the present invention has many advantages:
1) obtains easily required long stroke, need not the motion that special and device complexity can obtain favourable approximate simple harmonic quantity rule, therefore the long stroke that can realize ideal, low jig frequency, low acceleration, pump efficiency height, output height, the big discharge capacity that is particularly suitable for deep-well, viscous crude, high-water-cut oil-producing well is adopted by force;
2) owing to adopted pure mechanical drive mode, thus firm in structure, motion is reliable;
3) because the polished rod characteristics of motion is approximately simple harmonic motion, so steady during break-in, dynamic load is littler;
4) simple in structure, be easy to adjustment, maintenance and manufacturing, lower, the good reliability of cost;
5) retarder etc. all is installed in bottom the pylon, so floor space is little;
6) centrifugal force that does not have the spin balancing piece to bring, except the little horizontal component that connecting rod produces, all the other are vertical load, add former advantages, make the pumping unit by manufacturing of the present invention not only be suitable for the oil field, land but also be adapted at offshore platform using.
Claims (20)
1, long stroke pumping unit has a base, and one is vertically mounted on the base and the pylon that installs facing to well head its front, and the power source part by motor and retarder are formed is characterized in that:
(1) motor is fixed on the posterolateral base of pylon, and retarder is fixed on the interior base of pylon, and its output shaft is protruding from the pylon both sides, and this motor is connected by belt transmission with this retarder;
(2) device of generation linear reciprocating motion, comprise that a pair of connecting rod that is arranged symmetrically in pylon both sides outsides can move up and down with one and the transverse arm that the pylon both sides are connected with connecting rod in this connecting rod is stretched out at its two ends in pylon, this crank is connected with the two ends of reducer output shaft respectively;
(3) one are installed in pylon inside, are wrapped in the stroke enlarger that the wire rope on these sheave block is formed by fixed pulley group and movable sheave group and one by certain way;
(4) be installed in tower top, the big head sheave that its position can all around be adjusted, wire rope one end of crossing over big head sheave is connected with polished rod by rope hanger, and the other end is connected with weight-balancing device through first safety installations, constitutes balance sysmte;
(5) be fixed on rope locking machine on the weight-balancing device, the suitable part between upper and lower fixed pulley group of wire rope links together in it and the above-mentioned stroke enlarger, in the stroke movement of polished rod, this rope locking machine should remain between the upper and lower fixed pulley group and move;
(6) first safety installations that works when polished rod or when connecting the wire cable rupture of polished rod;
(7) or second safety installations that fracture time work too loose when stroke enlarger wire rope.
2, long stroke pumping unit as claimed in claim 1 is characterized in that, stroke enlarger wherein comprises:
(1) following fixed pulley group that is fixed on retarder top in bottom in the pylon has the pulley that can rotate respectively more than two in this sheave block, the rotation axis of pulley is substantially parallel with above-mentioned reducer output shaft;
(2) one are fixed on the interior last fixed pulley group near top end of pylon, but the pulley that comprises independent rotation more than two, the number of pulley equates with pulley number in the following fixed pulley group, and the output axis of the axis of each pulley and retarder is substantially parallel in the axis of pulley and the following fixed pulley group;
(3) one in pylon can up and down between the fixed pulley group along being installed in the movable pulley combination that the vertical guide on the pylon moves up and down, comprise two groups of pulleys, but every group of pulley by independent rotation more than two formed, two groups pulley number equate and equal or time fixed pulley group in the pulley number, the shaft axis of each pulley with above-mentioned go up in fixed pulley group and the following fixed pulley group each pulley axis and reducer output shaft substantially parallel, the framework that this movable pulley makes up connects with above-mentioned transverse arm by spherical bearing;
(4) steel cable is not wrapped on each pulley in a certain way across successively, but upper and lower fixed pulley group and movable pulley are made up the stroke enlarger that is connected into a bi-directional power, and the characteristics of this mechanism are: if less straight-line displacement S of input on the follow-up pulley built up construction
0, then with the output shift quantity (S) of certain parts that a bit are connected is scalable on part between the upper and lower fixed pulley group is input displacement S on the wire rope
02n doubly, i.e. S=2nS
0, wherein n is the pulley number that adopts in the last or following fixed pulley group, also equals half of movable pulley combination middle pulley sum;
As claim 2 described long stroke pumping units, it is characterized in that 3, stroke enlarger wherein comprises:
Be fixed on the following fixed pulley group of retarder top in the pylon, it comprises one in order to the downslide wheels are fixed on the bearing on the pylon, be fixedly mounted on this bearing and parallel with reducer output shaft and at the downslide wheel shaft of same vertical guide, one is enclosed within large pulley free to rotate on this pulley spindle, its axial position is basically in the tower center face, another is enclosed within the less pulley of diameter free to rotate on this pulley spindle, and its axial position is amesiality slightly;
Be installed in the last fixed pulley group on top in the pylon, comprise one in order to fixed pulley group on this is fixed to the bearing on the pylon, be fixedly mounted on this bearing and the top sheave axle of and coplane parallel with the downslide wheel shaft with reducer output shaft, one is enclosed within the pulley that can freely rotate on this, identical and the same with this pulley its axial position of diameter of the pulley that diameter is bigger in its diameter and the downslide wheels remains in the median plane of pylon substantially, another is enclosed within on this pulley spindle with the pulley that the less pulley of the diameter in the downslide wheels equates free to rotately, its axial position is amesiality, a upper saw pulley free to rotate is installed on this pulley spindle, and its position is in the outside of truckle;
The movable pulley combination that can move up and down in pylon is positioned at, between the following fixed pulley group, comprise a framework, two be installed on this framework the while parallel to each other also with reducer output shaft and last, the pulley spindle of the parallel and coplane of following fixed pulley axle, overlapping two pulleys free to rotate on the every axle respectively, their diameter equals, truckle diameter in the following fixed pulley group, wherein the position higher the axle on two pulleys aims at two pulleys in the last fixed pulley group respectively, the position lower spool on two pulleys aim at two pulleys in the following fixed pulley group respectively;
Steel cable is not wrapped on each pulley as follows across: an end is fixed on the base by euphroe, the other end from after onwards walk around pulley spindle upper offset lower the movable pulley combination pulley walk around another pulley of upwards walking around behind the pulley that aligns with this pulley on the downslide wheel shaft on the pulley spindle lower in the movable pulley combination then downwards, and then walk around large pulley in the downslide wheels downwards, after this steel wire rope head is upwards guided to the last fixed pulley group that is positioned at the top always, walk around the large pulley that is positioned at axle central authorities in this sheave block, walk around the pulley of aiming at this large pulley on the higher pulley spindle in position in the movable pulley combination then downwards, and then upwards walk around on the fixed pulley axle and turn to down behind another pulley, walk around another pulley on the higher pulley spindle in position in the movable pulley combination again, be fixed on the pylon through another euphroe after then fag end upwards being walked around upper saw pulley on the fixed pulley axle.
4, long stroke pumping unit as claimed in claim 2 is characterized in that, stroke enlarger wherein comprises:
Be fixed on the following fixed pulley group of retarder top in the pylon, it comprises one in order to the downslide wheels are fixed on the bearing on the pylon, be fixedly mounted on this bearing and downslide wheel shaft parallel with retarder and in same vertical guide, one is enclosed within large pulley free to rotate on this pulley spindle, its axial position is basically in the tower center face, another is enclosed within the less pulley of diameter free to rotate on this pulley spindle, and its axial position is amesiality a little;
Be installed in the last fixed pulley group on top in the pylon, comprise one in order to fixed pulley group on this is fixed to the bearing on the pylon, be fixedly mounted on this bearing and the top sheave axle of and coplane parallel with the downslide wheel shaft with reducer output shaft, one is enclosed within this and goes up pulley free to rotate, identical and the same with this pulley its axial position of diameter of the pulley that diameter is bigger in its diameter and the downslide wheels remains in the median plane of pylon substantially, another is enclosed within on this pulley spindle with the pulley that the less diameter of pulley of diameter in the downslide wheels equates free to rotately, its axial position is partial to the opposite side of a side of being partial to the medium and small pulley of downslide wheels, a upper saw pulley free to rotate is installed on this pulley spindle, and its position is in the outside of truckle;
The movable pulley combination that can move up and down in pylon is positioned at, between the following fixed pulley group, comprise a framework, one and reducer output shaft and last are arranged on this framework, the pulley spindle of the parallel and coplane of following fixed pulley axle, four diameters and last have been installed on this axle side by side, the identical pulley of the medium and small diameter of pulley of following fixed pulley group, but these four pulleys all independence and freedom rotate, the pulley that is positioned at two outsides is respectively with last, the truckle of following fixed pulley axle upper offset is aimed at, and two middle pulleys lay respectively at, the both sides of the vertical surface at two large pulley places and as far as possible close this plane in the following fixed pulley group;
Steel cable is not wrapped on each pulley as follows across: an end is fixed on the base by rope hanger, the other end from after walk around the movable pulley combination pulley that the truckle with following fixed pulley axle upper offset aligns forward, walk around down truckle on the fixed pulley axle then downwards, upwards walk around again in the movable pulley combination and the immediate pulley of pulley of just having walked around wire rope, walk around down the large pulley on the fixed pulley axle then downwards, after this, the last fixed pulley group that steel wire rope head directly upwards outreaches, from after walk around forward and get back to running block behind the large pulley on the fixed pulley axle and walk around the 3rd pulley on this pulley spindle, walk around the truckle of upwards walking around behind this pulley on the fixed pulley axle, walk around last pulley in the running block then downwards, steel wire rope head is upwards drawn, after walking around the upper saw pulley on the fixed pulley axle, steel wire rope head is fixed on the pylon through another euphroe.
As claim 3 or 4 described long stroke pumping units, it is characterized in that 5, the slot part of each pulley in this stroke enlarger has all embedded the elasticity antifriction material.
6, long stroke pumping unit as claimed in claim 5 is characterized in that, the elasticity antifriction material that embeds in the pulley groove in this stroke enlarger is an oil resistant rubber.
As claim 3 or 4 described long stroke pumping units, it is characterized in that 7, being equipped with on the movable pulley combination framework in the stroke enlarger wherein can be along the roller of fromer rail rolling on the pylon.
8, long stroke pumping unit as claimed in claim 1, it is characterized in that, pylon wherein is by four root posts and strengthens the long cube framework of the hollow that gusset is welded, on the pylon near top end except that the back, be installed with one three around the platform of the band guardrail orchid used of maintenance and debugging, the first half of platform is hinged, can upwards dig several angle, there is the staircase at through top the pylon both sides, leave the rectangular fenestra that the transverse arm that can hold above-mentioned connecting rod moves up and down on these pylon bi-side, the guiding device of bootable above-mentioned pulley combination motion removably is installed on the front column of pylon, the guiding device that the guiding weight-balancing device moves up and down removably is installed on the rear column of pylon.
9, long stroke pumping unit as claimed in claim 8, it is characterized in that, leading on its pylon is made up of two elongated channel steel shape parts to device, and they are installed on two front columns of pylon abreast along vertical respectively, and the notch of these two groove shape parts is relative.
10, long stroke pumping unit as claimed in claim 8, it is characterized in that, back guiding device on this pylon is made of two elongated channel steel shapes or I-steel shape part, they are installed on the rear column of pylon abreast along vertical respectively, its web is parallel to each other, and along having many Chang Yuan holes that longitudinally are discharged on vertical symmetrical center line of web, the Chang Yuan hole on two guide rails is aimed at mutually one by one.
11, long stroke pumping unit as claimed in claim 1, it is characterized in that, the device that wherein produces linear reciprocating motion comprises that a pair of connecting rod that is arranged symmetrically in outside, pylon both sides and one can move up and down and the transverse arm that the pylon side connects with connecting rod is stretched out at its two ends in pylon, the plane parallel at two pairs of crank-connecting rod places is in the median plane of pylon, the mounting hole that cooperates with reducer output shaft on the crank body is near the one end, one row is arranged for the through hole that connects with connecting rod away from an end of mounting hole, the axis of these through holes and the axis of mounting hole are all in vertical symmetry plane of crank body and parallel to each other; Connecting rod is the elongate rod with garden tee section, and all there is the part of amplification at two ends, and every end has a through hole, two through holes orthogonal, and an end connects with crank body by bearing pin, and an end of the other end and transverse arm is hinged; Transverse arm is an elongated thin walled structures with rectangular cross-section, its middle part has a bearing that raises up to link to each other with movable pulley combination framework by spherical bearing, stretch out from the rectangular nest hole of above-mentioned pylon both sides respectively at the two ends of transverse arm, symmetry has vertical U-shaped breach on its both ends of the surface, on the breach wall cross through hole is arranged, an end of connecting rod stretches among the transverse arm end breach and is installed in rotation on the bearing pin that is fixed between the breach wall.
12, long stroke pumping unit as claimed in claim 1 is characterized in that, wherein said euphroe comprises: cannulated sleeve, truckle, hollow draw-bar, end face bearing, pressure spring, locking nut, adjusting screw rod, bearing and hollow sleeve cover; Cannulated sleeve is a band bore hole and garden cylindrical sleeve end sealing, have on its closed end along the outwardly directed ear seat of sleeve axis direction, opening end has internal thread, hollow draw-bar is the elongate rod of a hollow, the one end has garden dish type flange, the other end has internal thread, and flange can slide in the bore hole of sleeve; Truckle is hinged on the ear seat of cannulated sleeve, the flanged (FLGD) end of hollow draw-bar is put in the sleeve, the other end of bar stretches out from the hole, garden on the socket cover and is connected and the nut check that is locked with adjusting screw rod on being hinged on drag link bearing by screw thread, end face bearing and pressure spring are placed in the cannulated sleeve and are enclosed within on the hollow draw-bar, an end face of bearing leans against on the flange, another side contacts with pressure spring, and the other end of this pressure spring withstands on the socket cover.
13, long stroke pumping unit as claimed in claim 1, it is characterized in that, wherein the shape of the balancer weight dolly in the weight-balancing device resembles the rectangular box of a uncovered, there is column vertically upward at box dual-side middle part, the part of amplification is all arranged at the top of two root posts, all have the rectangular cross through hole that is aligned with each other on it, be equipped with the both sides of dolly can have the bearing that rope locking machine seat usefulness is installed along the steamboat of rear rail rolling on the pylon on the dolly.
14, long stroke pumping unit as claimed in claim 1, it is characterized in that, wherein the rope locking machine that stroke enlarger and balancer weight dolly are linked together comprises: the rope locking machine fitting seat, two clamping plate, one of them and this fitting seat are fixed into one, another clamping plate removably are connected with fixing clamping plate with bolt, be clipped between two clamping plate and embed key in the translot on the clamping plate, with the fixture block that is embedded on the clamping plate folder gripping surface, have on these fixture blocks with wire rope and turn round around the consistent tooth line of direction, clamping the stroke enlarger in couples from both sides is positioned at, that section wire rope between the following fixed pulley group, and tighten with bolt, the rope locking machine fitting seat is connected and fixed through bolt and balancer weight dolly.
15, long stroke pumping unit as claimed in claim 1 is characterized in that, big head sheave wherein is the wheel of a band width of cloth bar, be installed in rotation on the bearing, bearing is installed on the flat board of tower top, pass through screw mechanism, big head sheave and its bearing can move front and back on this flat board, by a micro-adjusting mechanism, but big head sheave and also left and right sides fine motion of bearing thereof; The outer garden week of this big head sheave is made flute profile, the through hole that also has plurality of rows to arrange along garden week on the part wheel rim; Pressing plate peak place of outer garden week in big head sheave when polished rod is positioned at midstroke is pressed on wire rope on the big head sheave by bolt.
16, long stroke pumping unit as claimed in claim 1 is characterized in that, rope hanger wherein comprises: have the upper body of flat pattern, its end face central authorities have vertical through hole, and these both sides, hole have the through hole of two symmetries again; To shape on this is similar but the lower body that thickness increases greatly, have on it three respectively with three through holes that the hole is aimed at of upper body, the screw that two symmetries are arranged on the end face of upper body at this lower body, the jackscrew of two band conical heads is installed in these two screws, can be upper body jack-up with the jackscrew head; Polished rod passes from the lower body central hole, be fixed in the hole of ending body central authorities, wire rope respectively on upper body and the lower body in addition two holes pass, pass a thrust bearing again, pass a garden cylindrical sleeve that has conical through-hole then, the smaller diameter end in hole makes progress, and the groove that has radially-arranged bottom surface to deepen from inside to outside on this end face, steel wire rope head are broken up the back, back and be cast into the cone that matches with this cover garden taper hole with zinc; Between upper body and lower body, be enclosed within the cushion cover on the polished rod, the height when its thickness screws out fully less than above-mentioned jackscrew but greater than the height of head of jackscrew.
17, long stroke pumping unit as claimed in claim 1, it is characterized in that, the safety installations that wherein is used for balancer weight-polished rod system comprises: be inserted in the crossbeam between the two column top rectangular holes on the balancer weight dolly, there is a through hole perpendicular to top plan at this crossbeam middle part, and insert respectively in the rectangular hole of the little stay of balancer weight at these beam two ends; Between the top of the rectangular hole at crossbeam two ends end face and column top two block rubbers that thickness is suitable are arranged, its top and bottom contact with the upper surface of the upper surface of rectangular hole and crossbeam respectively and make the end face of rectangular hole on crossbeam two ends end face and the column keep certain interval; The safety pin ejecting mechanism comprises safety pin that is configured in its crossbeam both sides cinclides and the mechanism that controls safety pin, this control mechanism comprises that an end has the push rod of diameter greater than the flange of crossbeam middle part through hole, projection with parallel axes is arranged on this flange exterior edge face, push rod passes the hole at crossbeam middle part, its flange is against on the crossbeam lower surface, the upper end from covering of crossbeam mider hole pass be enclosed within steel wire end noose truckle connect; Be enclosed within pressure spring on the push rod above withstand on cover, below withstand on and make the keep down trend of motion of push rod on the push rod flange; The lever middle part is hinged on the crossbeam, and front end has a claw that protrudes; Another pressure spring acts on the lever first half stretches in the translot on the safety pin front end claw of lever, and the projection on lever rear end and the push rod is kept in touch, the elastic force of the elastic force of this pressure spring pressure spring on the push rod; The first half diameter of safety pin is bigger, this a part of rear portion has a translot that the claw of lever is entered, its front end is placed in the hole of crossbeam side arm slidably, the vertical and intersectant centerline in Chang Yuan hole on its shaft axis and the rear rail, and the safety pin point diameter is less than the width in Chang Yuan hole on the rear rail; Pressure spring is enclosed within on thinner latter half of of the diameter of safety pin, front end withstands on the safety pin circular bead surface, the rear end withstands on the surface of a part of stretching out from the crossbeam, make safety pin remain the trend of outside ejection, safety pin one end passes this convex portion and the hole from crossbeam, and the other end has the control safety pin to eject nut apart from usefulness.
18, long stroke pumping unit as claimed in claim 17, it is characterized in that, also comprise a wire on the rear rail that is installed in pylon in described first safety installations, the upper end of this wire is fixed, the lower end directly or indirectly connects by the control switch in the electromotor control circuit of certain mode and pumping unit, the position of this wire the rear rail inboard just in time with rear rail on the central lines in Chang Yuan hole, also have the V-shaped groove of Vertical direction on the end face of safety pin, the bottom of groove is just aimed at wire.
19, long stroke pumping unit as claimed in claim 1, it is characterized in that, second safety installations wherein is installed in the stroke enlarger, it comprises collision block one switching system, wherein a part is fixed on the cannulated sleeve of euphroe and can moves with sleeve, and another part is installed in and maintains static on the suitable position of pumping unit and be connected with the motor of oil extractor control circuit.
20, long stroke pumping unit as claimed in claim 1, it is characterized in that, the placement principle of the counterweight block in the described balance sysmte is, makes the weight of rope hanger of weight ratio pylon front of weight-balancing device one side in this system and the weight of weight sum about 1/2nd oils column of polished rod in oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103185.4A CN1004294B (en) | 1985-04-26 | 1985-04-26 | Long stroke pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85103185.4A CN1004294B (en) | 1985-04-26 | 1985-04-26 | Long stroke pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85103185A true CN85103185A (en) | 1986-10-22 |
| CN1004294B CN1004294B (en) | 1989-05-24 |
Family
ID=4793020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85103185.4A Expired CN1004294B (en) | 1985-04-26 | 1985-04-26 | Long stroke pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004294B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083942C (en) * | 1999-12-10 | 2002-05-01 | 华北石油管理局第一机械厂 | Curved beam pumping unit |
| CN1312379C (en) * | 2003-12-02 | 2007-04-25 | 哈尔滨工业大学 | Drive rope rupture protector for oil pumping machine |
| CN102536170A (en) * | 2012-02-01 | 2012-07-04 | 山东理工大学 | Pulley type oil pumping machine |
| CN101187303B (en) * | 2007-08-04 | 2012-12-26 | 胜利油田森诺胜利工程有限公司 | Novel pumping machine |
| CN102191929B (en) * | 2008-06-19 | 2014-01-08 | 黑龙江省万意达石油工程有限公司 | Vertical energy-saving pumping unit |
| CN103867164A (en) * | 2012-12-11 | 2014-06-18 | 李江保 | Long-stroke pumping unit |
| WO2017113497A1 (en) * | 2015-12-30 | 2017-07-06 | 中国矿业大学 | Mechanism and method for amplifying reciprocating speed and displacement |
| CN108979596A (en) * | 2018-09-14 | 2018-12-11 | 贵州航天林泉电机有限公司苏州分公司 | A kind of vertical oil-pumping machine with belt fracture defencive function |
-
1985
- 1985-04-26 CN CN85103185.4A patent/CN1004294B/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083942C (en) * | 1999-12-10 | 2002-05-01 | 华北石油管理局第一机械厂 | Curved beam pumping unit |
| CN1312379C (en) * | 2003-12-02 | 2007-04-25 | 哈尔滨工业大学 | Drive rope rupture protector for oil pumping machine |
| CN101187303B (en) * | 2007-08-04 | 2012-12-26 | 胜利油田森诺胜利工程有限公司 | Novel pumping machine |
| CN102191929B (en) * | 2008-06-19 | 2014-01-08 | 黑龙江省万意达石油工程有限公司 | Vertical energy-saving pumping unit |
| CN102536170A (en) * | 2012-02-01 | 2012-07-04 | 山东理工大学 | Pulley type oil pumping machine |
| CN103867164A (en) * | 2012-12-11 | 2014-06-18 | 李江保 | Long-stroke pumping unit |
| CN103867164B (en) * | 2012-12-11 | 2016-10-05 | 李江保 | A kind of long stroke pumping unit |
| WO2017113497A1 (en) * | 2015-12-30 | 2017-07-06 | 中国矿业大学 | Mechanism and method for amplifying reciprocating speed and displacement |
| CN108979596A (en) * | 2018-09-14 | 2018-12-11 | 贵州航天林泉电机有限公司苏州分公司 | A kind of vertical oil-pumping machine with belt fracture defencive function |
| CN108979596B (en) * | 2018-09-14 | 2024-04-05 | 贵州航天林泉电机有限公司苏州分公司 | Vertical pumping unit with belt fracture protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004294B (en) | 1989-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4665761A (en) | Long stroke pumping unit | |
| US4099447A (en) | Hydraulically operated oil well pump jack | |
| CN100516450C (en) | Telescoping drill string | |
| CN85103185A (en) | Long stroke pumping unit | |
| CN102155156B (en) | High-speed hydraulic drilling machine | |
| EA012103B1 (en) | Mechanical drive of well pumps | |
| CN104895532A (en) | Chain transmission reversing and short support double long-stroke oil pumping machine and using method thereof | |
| CN106150442A (en) | A kind of novel auxiliary beam-pumping unit of Balance type | |
| CA2666639A1 (en) | A 3-pillar pumping unit driven by compound permanent-magnet motor & its fabrication method | |
| CN101067367A (en) | Thickened oil deep well intelligent pumping unit | |
| CN201037401Y (en) | Thick oil deep well intelligence pumping unit | |
| CN2816349Y (en) | One-machine multi-well reciprocating oil pumping machine | |
| CN202560177U (en) | Tower-type double-chain belt pumping unit | |
| CN1007997B (en) | Long-stroke pumping unit without walking beam | |
| CN2725520Y (en) | Oil pumping machine | |
| CN106468144B (en) | Boring tower device and drilling machine | |
| CN204591235U (en) | A kind of chain drive commutates short support times journey long stroke pumping unit | |
| CN205370473U (en) | Device is sent to offshore drilling platform's worm drive formula drilling tool | |
| CN210317253U (en) | Non-beam tower type mechanical reversing oil pumping unit | |
| CN2888067Y (en) | Pumping unit | |
| CN102410001A (en) | Guide rod type walking-beam-free pumping unit | |
| CN102587866A (en) | Long-stoke chained oil pumping unit | |
| CN201953308U (en) | High-speed hydraulic drilling machine | |
| CN2179918Y (en) | Energy-saving counterweight balanced chain beam-pumping unit | |
| CN1693655A (en) | Oil pumping machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |