CN106481316A - A kind of rearmounted stacked pull bar long stroke pumping unit - Google Patents
A kind of rearmounted stacked pull bar long stroke pumping unit Download PDFInfo
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- CN106481316A CN106481316A CN201510548947.0A CN201510548947A CN106481316A CN 106481316 A CN106481316 A CN 106481316A CN 201510548947 A CN201510548947 A CN 201510548947A CN 106481316 A CN106481316 A CN 106481316A
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Abstract
The rearmounted stacked pull bar long stroke pumping unit of one kind disclosed by the invention, go the big figure pull bar including triangle, the described triangle pull bar that goes the big figure has the first fulcrum, the second fulcrum and central pivot point, first fulcrum and the second fulcrum can be rotated centered on central pivot point, first fulcrum is mobilizable to be arranged on the postbrachium of walking beam, second fulcrum is freely arranged, and is connected with rope for traction one end, and central pivot point is passed through a push rod flexible connection and is arranged on pylon.Arrange triangle by the postbrachium in walking beam to go the big figure pull bar, effectively increase stroke, reduce jig frequency, improve actual length of stroke and the coefficient of fullness of oil well pump.Make motor consume identical electric energy, can effectively increase the oil pumping amount of oil pumper, improve the work efficiency of oil pumper, reach the effect of energy-saving and emission-reduction.Simultaneously because increasing the drawing stroke of oil pumper, enabling described rearmounted stacked pull bar long stroke pumping unit to be suitable for the exploitation in different oil fields, increased the versatility of oil pumper.
Description
Technical field
The present invention relates to petroleum recovering machinery design field is and in particular to a kind of rearmounted stacked pull bar long stroke pumping unit.
Background technology
The existing two big class oil pumpers of China, the first big class is walking beam 13 formula oil pumper, the second big class is tower-type pumping unit, but current oil pumper still suffers from the problem of each side it is impossible to meet the demand of various environment.Such as, special-shaped walking beam 13 formula oil pumper, also known as double caput Equi Asini 11 oil pumpers for the first kind, function of pumping double caput Equi Asini 11 improves balance during oil well pump operating, reducing energy consumption, but the excessive mechanical part leading to be connected with walking beam 13 of its inertial load easily damages, therefore can only be used with extremely low frequency；Forward type air balanced pumping unit, its starting torque has and to a certain degree reduces, the low class of installed capacity, and when working, equilibrium sense is poor；Conventional type oil pumper is it is not easy to realize the requirement of sving long-stroke-distance low-stroke time, thus can not meet heavy oil wells, deeply takes out well；Six-bar linkage 5 walking beam 13 formula oil pumper is in exploitation and development stage although the shortcoming of four bar structure oil pumpers can be overcome, but structure is compared more complicated, and stability is not high., also there is the problems such as service life of chain is short, and reversing impact load is greatly and steel wire rope easily broken guide rail insufficient rigidity is yielding in Equations of The Second Kind, such as chain type oil pump；Hydraulic oil pumping unit is although oil well productivity can be improved, but due to being restricted by China's hydraulic component level, easily breaks down, reliability is not high, and safeguards relatively difficult.
Content of the invention
In order to overcome domestic oil pumper the deficiencies in the prior art at present, oil pumper of the present invention provides a kind of demand that disclosure satisfy that multiclass oil field, and stroke is big, the few rearmounted stacked pull bar long stroke pumping unit of jig frequency.
A kind of rearmounted stacked pull bar long stroke pumping unit, including motor, support baseboard, gear reduction unit, crank, connecting rod, pylon, sucker rod, rope Locking device, rope for traction, roller, caput Equi Asini, front fixed pulley, walking beam, frame alive, belt, the postbrachium of described walking beam is provided with triangle and goes the big figure pull bar, the described triangle pull bar that goes the big figure has the first fulcrum, second fulcrum and central pivot point, described first fulcrum and the second fulcrum can be rotated centered on central pivot point, described first fulcrum is mobilizable to be arranged on the postbrachium of walking beam, described second fulcrum is freely arranged, and be connected with rope for traction one end, described central pivot point is passed through a push rod flexible connection and is arranged on pylon.
Preferably, the center angle being formed between described central pivot point and the first fulcrum, second is obtuse angle.
Preferably, the described triangle pull bar that goes the big figure includes that front triangle goes the big figure pull bar and Vee formation goes the big figure pull bar, go the big figure the second fulcrum of pull bar of described Vee formation is connected with one end of described rope for traction, go the big figure the second fulcrum of pull bar of described front triangle is provided with rear fixed pulley, and described rope for traction bypasses described front triangle and goes the big figure the second fulcrum of pull bar and the setting of front fixed pulley.
Preferably, the air line distance that the air line distance that described front triangle goes the big figure between the first fulcrum of pull bar and the second fulcrum goes the big figure between the first fulcrum of pull bar and the second fulcrum more than described Vee formation.
Preferably, described front triangle go the big figure the center angle of pull bar angle more than Vee formation go the big figure pull bar center angle angle.
Preferably, described front triangle go the big figure pull bar, Vee formation go the big figure pull bar central pivot point pass through front push rod respectively, rear push rod is flexibly connected on the same fulcrum with pylon.
Preferably, in the walking beam rear end relative with described caput Equi Asini, beam balance counterweight is installed.
Preferably, described rope for traction is steel band.
Rearmounted stacked pull bar long stroke pumping unit of the present invention, arranges triangle by the postbrachium in walking beam and goes the big figure pull bar, effectively increase stroke, reduce jig frequency, improve actual length of stroke and the coefficient of fullness of oil well pump.Make motor consume identical electric energy, can effectively increase the oil pumping amount of oil pumper, improve the work efficiency of oil pumper, reach the effect of energy-saving and emission-reduction.Simultaneously because increasing the drawing stroke of oil pumper, enable described rearmounted stacked pull bar long stroke pumping unit to be suitable for the exploitation in different oil fields, increased the versatility of oil pumper, and rearmounted stacked pull bar long stroke pumping unit compact conformation of the present invention, uniform force, working stability.
Brief description
Fig. 1 is the structural representation of rearmounted stacked rod-pulling type long stroke pumping unit of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, the present invention will be described in further detail it should be understood that, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Rearmounted stacked rod-pulling type long stroke pumping unit of the present invention, including motor 1, support baseboard 2, gear reduction unit 3, crank 4, connecting rod 5, pylon 6, sucker rod 7, rope Locking device 8, rope for traction 9, roller 10, caput Equi Asini 11, front fixed pulley 12, walking beam 13, beam balance counterweight 19, live frame 20, belt 21.The postbrachium of described walking beam 13 is provided with triangle and goes the big figure pull bar, the described triangle pull bar that goes the big figure has the first fulcrum, the second fulcrum and central pivot point, described first fulcrum and the second fulcrum can be rotated centered on central pivot point, described first fulcrum is mobilizable to be arranged on the postbrachium of walking beam 13, described second fulcrum is freely arranged, and be connected with rope for traction one end, described central pivot point is passed through a push rod flexible connection and is arranged on pylon.Therefore, the air line distance between central pivot point and pylon immobilizes.Wherein preferred, the center angle being formed between described central pivot point and the first fulcrum, second is obtuse angle, and is the friction reducing traditional steel wire rope, and described rope for traction 9 selects steel band to replace steel wire rope.
For increasing stroke further, the described triangle pull bar that goes the big figure includes that front triangle goes the big figure pull bar 17 and Vee formation goes the big figure pull bar 18, go the big figure the second fulcrum of pull bar 18 of described Vee formation is connected with one end of described rope for traction 9, go the big figure the second fulcrum of pull bar 17 of described front triangle is provided with rear fixed pulley 16, and described rope for traction 9 bypasses that described front triangle goes the big figure the second fulcrum of pull bar 17 and front fixed pulley 12 is arranged.Described front triangle go the big figure pull bar 17, Vee formation go the big figure pull bar 18 central pivot point pass through front push rod 14 respectively, rear push rod 15 is flexibly connected on the same fulcrum with pylon 6.
The air line distance that the air line distance that described front triangle goes the big figure between the first fulcrum of pull bar 17 and the second fulcrum goes the big figure between the first fulcrum of pull bar 18 and the second fulcrum more than described Vee formation.Described front triangle go the big figure pull bar 17 center angle angle more than Vee formation go the big figure pull bar 18 center angle angle.
Specifically, motor 1 passes through belt 21 and gear reduction unit 3 enters action edge transmission, the output shaft of gear reduction unit 3 is fixedly connected with one end of crank 4, crank 4 other end is connected with one end of connecting rod 5 by bearing, the other end of connecting rod 5 is connected with the rear end of walking beam 13 by bearing, the rotation function thus exporting motor 1 is converted into the kinetic energy that stretches up and down, the middle part of walking beam 13 is connected with the top of pylon 6 by bearing, thus crank 4 and connecting rod 5 and walking beam 13 and pylon 6 have constituted a four-bar mechanism；Go the big figure the first fulcrum of pull bar 17 of front triangle is arranged on walking beam 13 postbrachium by bearing，The go the big figure central pivot point of pull bar 17 of front triangle is connected with one end of front push rod 14 by bearing，Go the big figure the second fulcrum of pull bar 17 of front triangle is connected with rear fixed pulley 16 by bearing，The other end of front push rod 14 is arranged in the middle part of pylon 6 by bearing，Go the big figure the first fulcrum of pull bar 18 of Vee formation is arranged on walking beam 13 postbrachium by bearing，The go the big figure central pivot point of pull bar 18 of Vee formation is connected with one end of rear push rod 15 by bearing，Go the big figure the second fulcrum of pull bar 18 of Vee formation is connected with steel band，The other end of push rod 15 is arranged in the middle part of pylon 6 by bearing afterwards，Described front triangle goes the big figure pull bar 17、Vee formation goes the big figure pull bar 18、Walking beam 13、Front push rod 14、Push rod 15 and pylon 6 constitute an independent four-bar mechanism afterwards；The upper end of caput Equi Asini 11 is provided with front fixed pulley 12, the forward position circular arc portion of caput Equi Asini 11 is provided with roller 10 by bearing, one end of steel band is fixedly mounted on Vee formation and goes the big figure pull bar 18, and the other end bypasses the rear fixed pulley 16 that front triangle goes the big figure on pull bar 17 and front fixed pulley 12 is connected with rope Locking device 8.
In first four-bar mechanism, the kinetic energy of motor 1 obtains the rotating speed of amount after gear reduction unit 3 deceleration, crank 4 rotarily drives walking beam 13 and pumps, so that caput Equi Asini 11 also pumps therewith, steel band also moves up and down along the forward position of caput Equi Asini 11, in second four-bar mechanism, the walking beam 13 drive front-rear triangular pull bar 18 that goes the big figure that pumps moves, Vee formation goes the big figure, and pull bar 18 is synchronous with caput Equi Asini 11 to pull steel band motion, it is achieved thereby that increasing the move distance of steel band for the first time, increase oil pumper stroke, go the big figure pull bar 17 and Vee formation of front triangle goes the big figure the synchronous jack-up steel band of pull bar 18, thus the move distance increasing steel band second, increase oil pumper stroke；The go the big figure roller 10 of installation of the front fixed pulley 12 of installation of the rear fixed pulley 16 installed on pull bar 17 and caput Equi Asini 11 upper end and caput Equi Asini 11 forward position circular arc portion of front triangle can reduce the friction of steel band and mechanism, and pass through the above-mentioned 3 points of positions contacting with steel band, form a stable triangular structure, in order to transmit pulling force needed for polished rod load moves up and down, so that Pumping Unit is more stable；The beam balance counterweight 19 of walking beam 13 rear end setting, front triangle pull bar 17, the Vee formation pull bar 18 that goes the big figure that goes the big figure can balance the moment that in down-hole load and oil pumping process, walking beam 13 deadweight produces, so that oil pumper even running.
Rearmounted stacked pull bar long stroke pumping unit of the present invention passes through cleverly to increased that front triangle goes the big figure pull bar 17 and Vee formation goes the big figure pull bar 18 in walking beam 13 postbrachium of walking beam 13 formula oil pumper, the drawbacks of overcome traditional four bar oil pumper, reach the effect of balance caput Equi Asini 11 fractional load, mitigate crank 4 moment of torsion, low power consuming, and effectively increase stroke, reduce jig frequency, improve actual length of stroke and the coefficient of fullness of oil well pump.In the case that motor 1 consumes identical electric energy, can effectively increase the oil pumping amount of oil pumper, improve the work efficiency of oil pumper, reach the effect of energy-saving and emission-reduction.Simultaneously because increasing the drawing stroke of oil pumper, enabling described rearmounted stacked pull bar long stroke pumping unit to be suitable for the exploitation in different oil fields, increased the versatility of oil pumper.
The polished rod load of conventional pumping unit focuses primarily upon caput Equi Asini 11 part, serious to caput Equi Asini 11 and steel rope abrasion, and at caput Equi Asini 11 institute's strong point to walking beam 13 loaded in up-down stroke, moment of torsion is larger, easily produces stress fatigue.And the polished rod load of rearmounted stacked pull bar long stroke pumping unit is gone the big figure pull bar 18 shared by caput Equi Asini 11 and front-rear triangular, and between them, form a stable triangular structure, compact conformation, and the crest of their torsion curves and trough have phase contrast, therefore there is good energy-conserving action.
Conventional pumping unit heavy crude producing is occurring the discordant phenomenon of movement velocity of oil pump plunger piston speed and caput Equi Asini 11 suspension point.During down stroke, often occur that oil pump plunger piston falling speed lags behind the movement velocity phenomenon of caput Equi Asini 11 suspension point, when plunger is also not reaching to bottom dead centre, caput Equi Asini 11 begins to upstroke, thus decreasing the actual length of stroke of oil well pump, reduce coefficient of fullness and the discharge coefficient of oil well pump；During upstroke, suddenly load is added on caput Equi Asini 11, also results in larger dynamic loading, make oil pump running unstable, reduce the service life of oil pumper and oil pumping system.The pull bar 18 and rearmounted stacked pull bar long stroke pumping unit front-rear triangular goes the big figure, the drift angle of the triangle being formed and caput Equi Asini 11 between can effectively coordinate point suspension movement, in down stroke, the drift angle of triangular structure slowly becomes big, hanging rope is made to increase with caput Equi Asini 11 suspension point active force, it is bound more closely, be effectively prevented the phenomenon that oil pump plunger piston falling speed lags behind the movement velocity of caput Equi Asini 11 suspension point；When front tripod drift angle reaches maximum, walking beam 13 initially enters upstroke, and speed is from slow to fast, therefore when eliminating plunger and being also not reaching to bottom dead centre, caput Equi Asini 11 begins to upstroke and suddenly load is added on caput Equi Asini 11, also results in the phenomenon of larger dynamic loading.Effectively increase coefficient of fullness and the discharge coefficient of oil well pump, overcome oil return phenomenon.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of rearmounted stacked pull bar long stroke pumping unit, it is characterized in that, including motor, support baseboard, gear reduction unit, crank, connecting rod, pylon, sucker rod, rope Locking device, rope for traction, roller, caput Equi Asini, front fixed pulley, walking beam, frame alive, belt, the postbrachium of described walking beam is provided with triangle and goes the big figure pull bar, the described triangle pull bar that goes the big figure has the first fulcrum, second fulcrum and central pivot point, described first fulcrum and the second fulcrum can be rotated centered on central pivot point, described first fulcrum is mobilizable to be arranged on the postbrachium of walking beam, described second fulcrum is freely arranged, and be connected with rope for traction one end, described central pivot point is passed through a push rod flexible connection and is arranged on pylon.
2. rearmounted stacked pull bar long stroke pumping unit according to claim 1 is it is characterised in that the center angle being formed between described central pivot point and the first fulcrum, second is obtuse angle.
3. rearmounted stacked pull bar long stroke pumping unit according to claim 2, it is characterized in that, the described triangle pull bar that goes the big figure includes that front triangle goes the big figure pull bar and Vee formation goes the big figure pull bar, go the big figure the second fulcrum of pull bar of described Vee formation is connected with one end of described rope for traction, go the big figure the second fulcrum of pull bar of described front triangle is provided with rear fixed pulley, and described rope for traction bypasses described front triangle and goes the big figure the second fulcrum of pull bar and the setting of front fixed pulley.
4. rearmounted stacked pull bar long stroke pumping unit according to claim 3, it is characterized in that, the air line distance that the air line distance that described front triangle goes the big figure between the first fulcrum of pull bar and the second fulcrum goes the big figure between the first fulcrum of pull bar and the second fulcrum more than described Vee formation.
5. the angle of rearmounted stacked pull bar long stroke pumping unit center angle of pull bar it is characterised in that described front triangle goes the big figure according to claim 3 more than Vee formation go the big figure pull bar center angle angle.
6. rearmounted stacked pull bar long stroke pumping unit according to claim 3 it is characterised in that described front triangle goes the big figure pull bar, Vee formation go the big figure pull bar central pivot point pass through front push rod respectively, rear push rod is flexibly connected on the same fulcrum with pylon.
7. rearmounted stacked pull bar long stroke pumping unit according to claim 1 is it is characterised in that be provided with beam balance counterweight in the walking beam rear end relative with described caput Equi Asini.
8. rearmounted stacked pull bar long stroke pumping unit according to claim 1 is it is characterised in that described rope for traction is steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548947.0A CN106481316A (en) | 2015-09-01 | 2015-09-01 | A kind of rearmounted stacked pull bar long stroke pumping unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510548947.0A CN106481316A (en) | 2015-09-01 | 2015-09-01 | A kind of rearmounted stacked pull bar long stroke pumping unit |
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| CN106481316A true CN106481316A (en) | 2017-03-08 |
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| CN201510548947.0A Pending CN106481316A (en) | 2015-09-01 | 2015-09-01 | A kind of rearmounted stacked pull bar long stroke pumping unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184622A (en) * | 2018-10-31 | 2019-01-11 | 广州榕创新能源科技有限公司 | A kind of beam pumping unit of petroleum drilling and mining plural equilibrium |
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2015
- 2015-09-01 CN CN201510548947.0A patent/CN106481316A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184622A (en) * | 2018-10-31 | 2019-01-11 | 广州榕创新能源科技有限公司 | A kind of beam pumping unit of petroleum drilling and mining plural equilibrium |
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Application publication date: 20170308 |
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