CN204002719U - A kind of pendulum model oil pumper with T-shaped walking beam - Google Patents
A kind of pendulum model oil pumper with T-shaped walking beam Download PDFInfo
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- CN204002719U CN204002719U CN201420429715.4U CN201420429715U CN204002719U CN 204002719 U CN204002719 U CN 204002719U CN 201420429715 U CN201420429715 U CN 201420429715U CN 204002719 U CN204002719 U CN 204002719U
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- oil pumper
- crank
- fork
- walking beam
- girder
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Abstract
The utility model provides a kind of pendulum model oil pumper with T-shaped walking beam, and this oil pumper comprises frame, T-shaped walking beam, horse head, reduction box, crank and motor, and described T-shaped walking beam is arranged in described frame by main shaft; The center line of fork is perpendicular to girder to form rigidly connected T-shaped walking beam, and the two drive line angle in motion process equals 90 ° all the time; The output shaft of described reduction box is positioned at the below of described main shaft; Described crank is arranged on the output shaft of reduction box, and described crank is provided with striking gear, and described striking gear coordinates with described fork the arcuate movement that rotatablely moving of described crank is become to described fork, to drive swinging up and down of described girder.The utility model counterweigh moment is stable, can obviously reduce oil pumper peak torque, eliminates negative torque, strengthens stability, improves energy-saving effect.
Description
Technical field
The utility model relates to oil recovery machiner field, particularly relates to a kind of beam-pumping unit.
Background technology
Beam pumping unit, as the Surface power drive equipment of downhole pump, is a kind of main mechanical oil recovery equip ment.Common Pumping Unit is generally frame and is positioned at the centre of walking beam, and when oil pumper work, the suffered load ratio in walking beam two ends, compared with balance, operates steadily frame; Crank adopts conventional bar shaped crank, is connected with balance weight, and crank-link mechanism and horse head lay respectively at the both sides of frame, between crank and walking beam by being rigidly connected or being flexible coupling transferring power and moment of torsion.
As shown in Figure 1, can be by the transferring power that is flexible coupling of wire rope between crank and walking beam.Such as the two horse head energy-saving pumping units of disclosed one in Chinese utility model patent CN202707004, comprise support 1 ', frame 2 ', walking beam 3 ', rear horse head 4 ', front horse head 5 ', crank 6 ', balance weight 7 ', reduction box 8 ', wire rope 9 ' and motor 10 ', the two ends of walking beam connect respectively front horse head and rear horse head, rear horse head by wire rope 9 ' connecting crank 6 ', crank connect balance weight 7 ' and the reduction box 8 of counterweight ', front horse head connect polished rod eye 11 '.
As shown in Figure 2, at present conventional beam-pumping unit comprises motor 1 ", brake gear 2 ", reduction box 3 ", crank 4 ", balance weight 5 ", connecting rod 6 ", walking beam axle 7 ", balance weight 8 ", frame axle 9 ", walking beam 10 ', horse head 11 ", polished rod eye 12 " and frame 13 ", " adopt and be rigidly connected; crank 4 " is provided with balance weight 8 ", it is by four-bar linkage structure transferring power for connecting rod 6.Wherein, crank axle center is positioned under the tail bearing of walking beam substantially, like this, when horse head is during in top dead-centre (horse head is lifted to peak), bottom dead centre (horse head reduces as far as possible) position, the angle of connecting rod centreline space is zero substantially, and this angle is called as the crank angle between two limit positions of oil pumper; Balance weight center of gravity overlaps with crank axle center line, and the angle forming between two lines is zero, and this angle is called as the equilibrium phase parallactic angle of oil pumper.
The deficiency that above-mentioned oil pumper exists is: because balance weight is arranged on crank, when rotation, balance weight can produce certain centrifugal force, because crank angle between two limit positions is approximately zero, the angle that while making oil pumper work, up-down stroke crank turns over is substantially equal, in whole working cycles, oil pumper peak torque is higher, also has negative torque problem.
Utility model content
In order to reduce oil pumper peak torque, and eliminate negative torque, improve energy-saving effect, the utility model provides a kind of novel beam-pumping unit.
The technical solution of the utility model is as follows:
Have a pendulum model oil pumper for T-shaped walking beam, this oil pumper comprises frame, T-shaped walking beam, horse head, reduction box, crank and motor, and described T-shaped walking beam is arranged in described frame by main shaft; The center line of fork is perpendicular to girder to form rigidly connected described T-shaped walking beam, and the two drive line angle in motion process equals 90 ° all the time; Described girder two ends connect described horse head, and the output shaft of described reduction box is positioned at the below of described main shaft; Described crank is arranged on the output shaft of reduction box, and described crank is provided with striking gear, and described striking gear coordinates with described fork the arcuate movement that rotatablely moving of described crank is become to described fork, to drive swinging up and down of described girder.
Further, described striking gear does the reciprocating motion in predetermined stroke in the longitudinal rail groove of described fork, and the driving torque that described fork passes to described walking beam in the time swinging is variable.
Further, described guide-track groove is two-sided track, so that moving track and the load support of described striking gear under different rotary angle to be provided.
Further, the center line of described fork occupy the center of walking beam, and described horse head is symmetricly set in the two ends of described girder; The junction of the output shaft of described crank and reduction box be substantially positioned at described main shaft under.
Further, described girder is fixedly connected with swing arm, and described fork is fixed in described swing arm.
Further, the V-shaped or ladder type of described swing arm.
Further, when described horse head rises to peak or reduces as far as possible and the horizon of described girder horizontal level form angle α, when described fork is rocked to amplitude peak with the vertical line of described girder horizontal level formation angle β, described α=β.
Further, described angle α or β are less than or equal to 22.5 °.
Further, this oil pumper has removed the balance weight on crank described in prior art, described crank to be rotated in the angle that upstroke and down stroke turn over unequal; Wherein, 180 ° of angle γ 1 > that described crank turns in upstroke, 180 ° of angle γ 2 < turning in down stroke.
Further, described oil pumper also comprises electrical control system, and the power shaft of described reducer is provided with electromagnetism automatic brake, and described electrical control system comprises for described electromagnetism automatic brake is losing the control circuit of realizing braking in the situation of carrying.
The utlity model has following advantage:
1, the T-shaped walking beam of this oil pumper adopts symmetric double horse head Balance structure, the Changing Pattern of counter balance torque and load-torque fits like a glove, make the net torque curve of oil pumper more satisfactory, its good balance effect, can obviously reduce oil pumper peak torque, eliminates negative torque, strengthens stability, improve energy-saving effect.
2, this Poewr transmission mechanism is that crank drives striking gear to stir fork, from the course of work, due to the rotation of crank, striking gear is moved back and forth in the guide-track groove of fork, and make fork form reciprocally swinging, and power is delivered to girder, make the horse head on girder carry out upper and lower reciprocating motion, and oscillating bar length changes when actual acting, form four guide-bar mechanisms of a variable element, reach laborsaving and reduce the effect of power consumption.
3, due to fork and girder, the drive line angle in motion process equals 90 ° all the time, and its transmission force property is four-bar mechanism performance optimum.Its operating principle is that the parameter of transmission force property is pressure angle or drive line angle, pressure angle less (being that drive line angle is larger), and the power transmission efficiency of mechanism is higher; Otherwise, pressure angle larger (being that drive line angle is less), the power transmission loss of mechanism is larger, and transmission efficiency is lower.
4, the angle that when oil pumper is worked, up-down stroke crank turns over does not equate; The angle that upstroke turns over is greater than 180 ° of >, and 180 ° of the angle < that down stroke turns over reduce the acceleration of suspension point upstroke and dynamic loading, is that the peak torque of reducer reduces, and change in torque is more even.The up-down stroke time can need to adjust in real time according to oil well condition, obviously improves energy-saving effect.
5, removed the balance weight on crank in prior art, can eliminate the centrifugal force of spin balancing piece, made the stability of oil pumper complete machine better.
6, only act on the main shaft of walking beam because two ends balance makes Main Load, thereby frictional power loss is lower, the mechanical efficiency of complete machine is higher.
7, owing at the input shaft end of reducer, electromagnetism automatic brake being housed, except having conventional brake function, also possess in oil pumper running, when unexpected disconnected, de-(lose and carry), the safety control function of Braking mode.
Brief description of the drawings
The Pumping Unit that Fig. 1,2 is prior art;
Fig. 3-5 are the structural representation of the utility model embodiment, show respectively the state that girder is positioned at horizontal level, the horse head of girder is positioned at suspension point (top dead centre) state and lower suspension point (lower dead center) state in figure.
Variable condition schematic diagram when Fig. 6 is oil pumper operation of the present utility model;
Fig. 7 is the speed comparative graph of oil pumper of the present utility model and prior art oil pumper;
Fig. 8 is the acceleration comparative graph of oil pumper of the present utility model and prior art oil pumper;
Fig. 9 is the relatively schematic diagram of change in torque of oil pumper of the present utility model and prior art oil pumper;
Figure 10 is that the power of the utility model oil pumper and prior art oil pumper changes relatively schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to restriction of the present utility model.
As in Figure 3-5, the utility model provides a kind of beam pumping unit, comprises frame 1, crank 2, swing arm 4, fork 5, girder 7, horse head and drive unit composition.Wherein, swing arm 4, fork 5 and girder 7 form T-shaped walking beam, wherein, from position relationship, the center line of fork 5 is vertical with girder 7, be T-shaped structure setting, in an embodiment, concrete syndeton is: fork 5 is fixed on swing arm 4, and girder 7 is fixed in swing arm, be and be rigidly connected, such as connected modes such as bolt connection, welding.As one distortion, fork can also directly be fixedly connected with girder, and junction gives necessary reinforcing again and supports.
Girder 7 adopts symmetric double horse head Balance structure, comprises front horse head 6 and counterweight horse head 11, is connected with counterweight 8 on counterweight horse head 11.Preferably, this counterweight 8 adopts steel wire hang mode to be easy to regulate, make girder two ends horse head load with the force action of a plummet in frame 1, the horizontal component that therefore frame 1 is born is more much smaller than common beam oil pumper, makes that the rolling momentum of frame 1 is corresponding wants less.
The suffered load symmetrical balance in two ends of girder 7, is provided with main shaft in the heart in girder, this main shaft is preferably bearing 12, and bearing 12 is arranged on the top of frame 1, and girder 7 is taking this bearing 12 as pivot swinging.Preferably, between frame 1 and girder 7, be also provided with a locking device 10, can make girder 7 be fixed on horizontal level.It will be appreciated by persons skilled in the art that in the time that girder 7 swings up and down, with its T-shaped walking beam forming by rigidly connected swing arm 4, fork 5, its entirety swings with this bearing 12 thereupon.Certainly, select as one, the position of main shaft also can not occupy the central point of girder 7; Can also select as a kind of, the load at the two ends of girder 7 also can asymmetricly arrange.
In the present embodiment, fork 5 is rigidly connected below girder 7 by swing arm 4 and forms T-shaped structure, and swing arm 4 is V-type, can certainly select the swing arm of other suitable shape and structure, such as trapezoidal.Above-mentioned V-type swing arm 4 have two, be rigidly secured to respectively the both sides of girder 7, fork 5 setting is installed in two swing arms 4, and ensures that fork 5 and the drive line angle of girder 7 remain 90 ° in motion process.In the present embodiment, fork 5 is fixed in swing arm 4 rigidly with multiple spot, thereby further ensures fastness and the stability of swing arm 4.
Drive unit comprises motor 9 and reduction box 3, and reduction box 3 is roughly positioned at the below of bearing 12, between motor 9 and reduction box 3 by belt transmission.
The output shaft of reduction box 3 is provided with a crank 2, and the other end of crank 2 passes to fork 5 by striking gear 13 by power, and preferably, this striking gear 13 can be roller or slide block; Fork 5 is pendulum model reciprocating motion, and fork 5 is provided with the longitudinal guide-track groove 14 matching with the structure of striking gear 13, along with the rotation of crank 2, striking gear 13 is pumped in guide-track groove 14.As preferred version, in the guide-track groove 14 of fork 5, be provided with two-sided track (bilateral track), make striking gear 13 and the both sides of guide-track groove 14 contact to adapt to striking gear 13 in the time of different rotary angle, select wherein one side (side) guide rail of guide-track groove as the point of application, thus transferring power more effectively.
Compared with prior art, this oil pumper has directly removed the balance weight coordinating with crank 2, to improve better stability.
Further, eliminate the technique effect of negative torque in order to reach, preferably, crank 2 and the junction of the output shaft of reduction box 3 be substantially positioned at girder 7 bearing 12 under.Striking gear 13 on crank 2 moves up and down in predetermined stroke in the guide-track groove 14 of fork 5, and the driving torque that makes fork 5 pass to girder 7 in the time swinging is variable.Particularly preferably, as shown in Figure 6, the angle that crank 2 turns in upstroke and down stroke is unequal, wherein, crank 2 be rotated in 180 ° of angle γ 1 > that upstroke turns over, 180 ° of angle γ 2 < turning in down stroke.In the time that horse head rises to peak or reduces as far as possible, the horizon of itself and girder horizontal level forms angle α, track wobble during to amplitude peak with the vertical line formation angle β of girder horizontal level, preferably, angle α=β.For the energy-saving effect having reached, angle α or β are preferably less than or equal to 22.5 °, such as 22 °.
Above-mentioned oil pumper carrys out control appliance operation by an electrical control system, comprises indispensable power supply control, servo-driver etc., controls this electrical control system and can adopt any control system of the prior art, to ensure the work of oil pumper.Select as one, electromagnetism automatic brake (not shown) is installed on the power shaft of reduction box 3, this electromagnetic brake can be realized beyond basic braking function, can also be in oil pumper running, when sucker rod surprisingly breaks, takes off (lose and carry), the safety control function of Braking mode; Correspondingly, above-mentioned electrical control system has comprised the control circuit for controlling this electromagnetism automatic brake.Do not limit the structure of electromagnetism automatic brake at this utility model, do not limit the specific implementation of electrical control system yet.As the enforceable scheme of one, at this, introduce in full the electromagnetism automatic brake recorded in Chinese utility model patent CN202326846U and the technical scheme of related electrical control system wherein.
When use, motor 9 drives reduction box 3 to work by belt, is passed to crank 2, and the striking gear 13 of crank front end is in the interior reciprocating motion of guide-track groove 14, the arc that makes fork 5 form left and right swings, and T-shaped walking beam drives horse head 6, the also upper and lower reciprocally swinging of corresponding formation of counterweight horse head 11 thereupon.Form the up-and-down movement of suspension point by horse head 6 and hair plait 15, drive sucker rod pumping pump work.
Oil pumper of the present utility model and conventional pumping unit detect and compare in partial properties, to further illustrate the superior function of the oil pumper that the utility model provides.The common beam oil pumper below relating to, general structure and operating principle are as Fig. 2, and the shaft connection place of its crank and reduction box is positioned under the tail bearing of walking beam substantially, and connecting rod is for being rigidly connected.
1, velocity ratio
As shown in Figure 7, transverse axis is angle change frequency, angle coordinate is followed successively by 1,3,5......37 only, the longitudinal axis is speed, C1 is the rate curve of oil pumper of the present utility model, C2 is the rate curve of conventional pumping unit.
From the change curve of the speed in figure, upstroke speed is lower than conventional pumping unit, and frictional resistance is reduced, and is conducive to reduce upstroke polished rod load.
2, suspension point acceleration ratio
As shown in Figure 8, transverse axis is angle change frequency, angle coordinate is followed successively by 1,3,5......37 only, the longitudinal axis is acceleration, C1 is the accelerating curve of oil pumper of the present utility model, C2 is the accelerating curve of existing oil pumper.
From the change curve of the acceleration in figure, the utility model oil pumper upstroke first half section acceleration ratio conventional pumping unit low, the height of upstroke second half section acceleration ratio conventional pumping unit, is conducive to reduce dynamic loading, reduces the fluctuation of upstroke polished rod load.
3, crank torque comparison
As shown in Figure 9, transverse axis is angle change frequency, angle coordinate is followed successively by 1,3,5......37 only, the longitudinal axis is crank torque, C1 is the crank torque curve of oil pumper of the present utility model, C2 is the crank torque curve of existing oil pumper.
From the change curve of the moment of torsion in figure, peak torque of the present utility model is more much lower than conventional pumping unit, in whole working cycles without negative torque, and upper and lower stroke peak torque approaches, upper and lower stroke torque ripple is all even than conventional pumping unit, motor load changes more even, and running is more steady than conventional pumping unit.
4, power of motor comparison
As shown in figure 10, transverse axis is angle change frequency, angle coordinate is followed successively by 1,3,5......37 only, the longitudinal axis is power of motor, C1 is the crank torque curve of oil pumper of the present utility model, C2 is the crank torque curve of conventional pumping unit.
When crank uniform rotation, power of motor Changing Pattern is identical with crank torque, the power of motor peakedness ratio conventional pumping unit of pendulum model oil pumper of the present utility model much smaller, therefore motor that can selection of small power, reduce motor own loss and circuit loss, improve power factor, improve the power supply quality of electrical network.
5, be all the major parameter contrast of 10 type oil pumpers:
| The utility model oil pumper | Common beam oil pumper | |
| Maximum polished rod load kN | 61 | 64.84 |
| Minimum polished rod load kN | 30.49 | 55.62 |
| Upstroke maximal rate m/s | 0.68 | 1.01 |
| Upstroke peak acceleration m/s 2 | 0.64 | 0.91 |
| Upstroke minimum acceleration m/s 2 | -0.25 | -0.55 |
| Upstroke peak torque kN.m | 14.72 | 33.31 |
| Upstroke minimal torque kN.m | 0 | -10.89 |
| Motor peak power kW | 9.24 | 20.92 |
| Motor minimum power kW | 0 | -6.84 |
It should be noted that and the foregoing is only preferred embodiment of the present utility model, not thereby limit scope of patent protection of the present utility model, the utility model can also carry out equivalent improvement to the structure of above-mentioned various component.Therefore the equivalent structure that all utilizations manual of the present utility model and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and be all in like manner all included in the scope that the utility model contains.
Claims (10)
1. a pendulum model oil pumper with T-shaped walking beam, is characterized in that, this oil pumper comprises frame, T-shaped walking beam, horse head, reduction box, crank and motor,
Described T-shaped walking beam is arranged in described frame by main shaft;
The center line of fork is perpendicular to girder to form rigidly connected described T-shaped walking beam, and the two drive line angle in motion process equals 90 ° all the time; Described girder two ends connect described horse head, and the output shaft of described reduction box is positioned at the below of described main shaft;
Described crank is arranged on the output shaft of reduction box, and described crank is provided with striking gear, and described striking gear coordinates with described fork the arcuate movement that rotatablely moving of described crank is become to described fork, to drive swinging up and down of described girder.
2. oil pumper as claimed in claim 1, is characterized in that, described striking gear does the reciprocating motion in predetermined stroke in the longitudinal rail groove of described fork, and the driving torque that described fork passes to described walking beam in the time swinging is variable.
3. oil pumper as claimed in claim 2, is characterized in that, described guide-track groove is two-sided track, so that moving track and the load support of described striking gear under different rotary angle to be provided.
4. oil pumper as claimed in claim 3, is characterized in that, the center line of described fork occupy the center of walking beam, and described horse head is symmetricly set in the two ends of described girder; The junction of the output shaft of described crank and reduction box be substantially positioned at described main shaft under.
5. oil pumper as claimed in claim 4, is characterized in that, described girder is fixedly connected with swing arm, and described fork is fixed in described swing arm.
6. oil pumper as claimed in claim 5, is characterized in that, the V-shaped or ladder type of described swing arm.
7. oil pumper as claimed in claim 6, it is characterized in that, when described horse head rises to peak or reduces as far as possible and the horizon of described girder horizontal level form angle α, when described fork is rocked to amplitude peak with the vertical line of described girder horizontal level formation angle β, described α=β.
8. oil pumper as claimed in claim 7, is characterized in that, described angle α or β are less than or equal to 22.5 °.
9. as the oil pumper as described in arbitrary in claim 1-8, it is characterized in that, removed the balance weight on crank described in prior art, described crank to be rotated in the angle that upstroke and down stroke turn over unequal; Wherein, 180 ° of angle γ 1 > that described crank turns in upstroke, 180 ° of angle γ 2 < turning in down stroke.
10. oil pumper as claimed in claim 9, it is characterized in that, described oil pumper also comprises electrical control system, the power shaft of described reducer is provided with electromagnetism automatic brake, and described electrical control system comprises for described electromagnetism automatic brake is losing the control circuit of realizing braking in the situation of carrying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429715.4U CN204002719U (en) | 2014-07-31 | 2014-07-31 | A kind of pendulum model oil pumper with T-shaped walking beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429715.4U CN204002719U (en) | 2014-07-31 | 2014-07-31 | A kind of pendulum model oil pumper with T-shaped walking beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002719U true CN204002719U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420429715.4U Expired - Fee Related CN204002719U (en) | 2014-07-31 | 2014-07-31 | A kind of pendulum model oil pumper with T-shaped walking beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204002719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278974A (en) * | 2014-07-31 | 2015-01-14 | 孙宝利 | Pendulum type pumping unit with T-shaped walking beam |
| CN105952419A (en) * | 2016-06-28 | 2016-09-21 | 袁东升 | Pendulum type constant-liquid-level intelligent pumping unit and pumping unit constant-liquid-level oil extraction method |
| CN112216195A (en) * | 2020-10-22 | 2021-01-12 | 西南石油大学 | Multi-type rod oil pumping system demonstration teaching aid |
-
2014
- 2014-07-31 CN CN201420429715.4U patent/CN204002719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278974A (en) * | 2014-07-31 | 2015-01-14 | 孙宝利 | Pendulum type pumping unit with T-shaped walking beam |
| WO2016015535A1 (en) * | 2014-07-31 | 2016-02-04 | 孙宝利 | Pendulum type pumping unit with t-shaped walking beam |
| CN105952419A (en) * | 2016-06-28 | 2016-09-21 | 袁东升 | Pendulum type constant-liquid-level intelligent pumping unit and pumping unit constant-liquid-level oil extraction method |
| CN105952419B (en) * | 2016-06-28 | 2018-05-25 | 袁东升 | Pendulum model constant level intelligent oil pumping machine and pumping unit constant level oil production method |
| CN112216195A (en) * | 2020-10-22 | 2021-01-12 | 西南石油大学 | Multi-type rod oil pumping system demonstration teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20210731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |