CN105089575A - Pumping unit with auxiliary balance device - Google Patents
Pumping unit with auxiliary balance device Download PDFInfo
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- CN105089575A CN105089575A CN201510516741.XA CN201510516741A CN105089575A CN 105089575 A CN105089575 A CN 105089575A CN 201510516741 A CN201510516741 A CN 201510516741A CN 105089575 A CN105089575 A CN 105089575A
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- walking beam
- auxiliary balance
- balance device
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- beam afterbody
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Abstract
The invention discloses a pumping unit with an auxiliary balance device. The pumping unit comprises a pumping unit body, and the auxiliary balance device is connected with a walking beam tail part of the pumping unit body. According to the structure of the auxiliary balance device, a rear horse head is fixedly connected with one end of a connecting rod, the other end of the connecting rod is connected with the walking beam tail part, and the rear horse head is connected with a hydraulic cylinder type balance weight through a suspension line. According to the pumping unit with the auxiliary balance device, hydraulic oil is injected to the hydraulic cylinder type balance weight so as to be matched with the balance weight of original oil extracted by a sucker rod in the working process, and thus ideal dynamic equilibrium is realized. Due to the fact that the weight part needs to be lifted by an engine originally, no new energy consumption is added through the injection type balance weight, the power output of a motor is changed to tend to be lowered, and electric energy loss is lowered.
Description
Technical field
The present invention relates to oil pumper field, particularly a kind of oil pumper with auxiliary balance device.
Background technology
At present, beam pumping unit is in upper and lower stroke movement process, the change that the load change of polished rod can directly cause motor power (output) to export, electric energy is slatterned with the form of thermal loss to a great extent, therefore being improved the balanced ratio of oil pumper in prior art by various mode, is the key of oil pump energy-saving technology.
In order to reach the object of oil pump energy-saving, the overwhelming majority is that install auxiliary balance additional, especially walking beam assists dynamic poise device, reaches the object of balance of well pumping unit in the mechanism such as crank, walking beam consistent with polished rod pumping campaign.Existing conventional secondary weight has following structure: common balance weight, down eccentric barbell balance weight, pendulum bell formula balance weight, the second work horse head or swing type counterweight.Problems existing is, namely substantially increases counterweight, but is ceaselessly working due to the sucker rod of oil pumper, and in sucker rod, the weight of oil is constantly changing, thus is difficult to obtain desirable dynamic equilibrium.
The mounting method that walking beam on pumping units assists dynamic poise device traditional be by walking beam and balanced controls by welding, the mode such as bolton installs, need to carry out perforate and weld job on walking beam, change the structure of original walking beam, do not meet the requirement as far as possible not changing Pumping Unit.And once after installing, dismounting difficulty, brings extreme difficulties to the maintenance of auxiliary balance device.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of oil pumper with auxiliary balance device, the counterweight of the crude oil that sucker rod extracts in the course of the work can be mated dynamically, thus the dynamic equilibrium of realizing ideal, in preferred scheme, can under the condition not changing oil pumper original structure, need not perforate on walking beam, any welding operation is not carried out to walking beam, just can realize walking beam afterbody and needs are installed, auxiliary balance device is reliably connected with walking beam afterbody, and be easy to remove and repair.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of oil pumper with auxiliary balance device, comprises oil pumper, and auxiliary balance device is connected with the walking beam afterbody of oil pumper;
The structure of auxiliary balance device is that rear horse head is fixedly connected with one end of connecting rod, and the other end of connecting rod is connected with walking beam afterbody, and rear horse head is connected with hydraulic cylinder type counterweight by outstanding rope.
In described hydraulic cylinder type counterweight, be provided with piston rod in hydraulic cylinder, piston rod is connected with outstanding rope, and the top rod chamber of hydraulic cylinder is connected with fuel tank by oil inlet pipe, and pipeline is provided with electromagnetic valve and oil pump, between electromagnetic valve and fuel tank, be provided with oil return pipe.
The bottom rodless cavity of hydraulic cylinder is communicated with air.
Oil inlet pipe between electromagnetic valve and oil pump is also provided with the one way valve to the cut-off of oil pump direction.
Described electromagnetic valve at least comprises two positions, be respectively oil inlet pipe conducting, oil return pipe cut-off position and oil inlet pipe cut-off, oil return pipe conducting position.
Oil pumper is provided with the sensor of horse head operating position before detecting.
Auxiliary balance device is connected with the walking beam afterbody of oil pumper by adapter;
The structure of adapter is: housing is socketed on walking beam afterbody, housing comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate with two side plates, crossover sub end plate is provided with the end plate through hole corresponding with the walking beam afterbody through hole of walking beam afterbody, in end plate through hole, is provided with hold down gag;
Crossover sub end plate is also installed with installation bracket, bracket is installed and is provided with multiple screwed hole for being connected with auxiliary balance device.
In described hold down gag, outer plate is connected with clip plate by hold down gag lock bolt, and the length of outer plate and clip plate is greater than the internal diameter of end plate through hole, and the width of clip plate is less than the internal diameter of end plate through hole;
Clip plate is provided with the positioning boss for being placed in walking beam afterbody through hole.
At the top of housing, be also provided with the auxiliary balance alignment pin for locating auxiliary balance device near the position of crossover sub end plate;
Also be provided with multiple walking beam afterbody locating hole corresponding with the walking beam afterbody alignment pin on walking beam afterbody at the top board of housing, walking beam afterbody locating hole is slotted hole.
Also adjusting device is provided with between two side plates of housing;
In adjusting device, load body two ends are connected with two side plates of housing by adjusting device fastening bolt, and load body is provided with horizontal adjusting bolt and vertical adjusting bolt;
After adjusting device is installed, horizontal adjusting bolt withstands the walking beam afterbody free bearing of walking beam afterbody, and vertical adjusting bolt withstands the bottom surface of walking beam afterbody.
A kind of oil pumper with auxiliary balance device provided by the invention, can by the counterweight of mating the crude oil that sucker rod extracts in the course of the work to hydraulic cylinder type counterweight injection liquid force feed, thus the dynamic equilibrium of realizing ideal, need to be realized promoting by motor because this moiety by weight is original, therefore this pouring-in counterweight can not increase new energy consumption, and the change making motor power (output) export is tending towards reducing, thus reduce electric energy loss.The crossover sub arranged, can not change the structure of existing oil pumper, not perforate on walking beam, not carry out welding operation to walking beam, just can realize the needs that walking beam afterbody installs auxiliary balance adjusting device.And connect reliable, be easy to remove and repair, can reuse.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the stereogram of crossover sub in the present invention.
Fig. 3 is the stereogram of the rear apparent direction of crossover sub in the present invention.
Fig. 4 is the stereogram of hold down gag in the present invention.
Fig. 5 is the stereogram of adjusting device in the present invention.
Fig. 6 is the structural representation of walking beam afterbody.
Fig. 7 is control flow chart of the present invention.
Fig. 8 be in the present invention crossover sub and walking beam afterbody install after stereogram.
Fig. 9 is the structural representation of hydraulic cylinder type counterweight in the present invention.
In figure: housing 1, walking beam afterbody locating hole 101, crossover sub end plate 102, end plate through hole 103, horizontal location hole 104, reinforcing rib 2, bracket 3 is installed, hold down gag 4, adjusting device 5, auxiliary balance alignment pin 6, hold down gag lock bolt 7, outer plate 8, clip plate 9, positioning boss 91, adjusting device fastening bolt 10, load body 11, horizontal adjusting bolt 12, vertical adjusting bolt 13, walking beam afterbody 14, walking beam afterbody alignment pin 141, walking beam afterbody through hole 142, walking beam afterbody free bearing 143, walking beam afterbody horizontal pin 144, auxiliary balance device 15, hydraulic cylinder type counterweight 151, hydraulic cylinder 1511, piston rod 1512, electromagnetic valve 1513, oil pump 1514, fuel tank 1515, rear horse head 152, outstanding rope 153, connecting rod 154, oil pumper 16, front horse head 161, the outstanding rope 162 of work, sucker rod 163.
Detailed description of the invention
As in Fig. 1,9, a kind of oil pumper with auxiliary balance device, comprises oil pumper 16, and auxiliary balance device 15 is connected with the walking beam afterbody 14 of oil pumper 16;
The structure of auxiliary balance device 15 is, rear horse head 152 is fixedly connected with one end of connecting rod 154, and the other end of connecting rod 154 is connected with walking beam afterbody 14, and rear horse head 152 is connected with hydraulic cylinder type counterweight 151 by outstanding rope 153.Structure thus, when hydraulic cylinder type counterweight 151 rises to peak, by giving injection liquid force feed in hydraulic cylinder type counterweight 151, and in decline process, hydraulic oil is discharged, thus the crude oil weight extracted in simulation sucker rod 163, realize the dynamic equilibrium of whole walking beam, significantly reduce the amplitude of variation that motor power (output) exports.
As in Fig. 1,9, in described hydraulic cylinder type counterweight 151, piston rod 1512 is provided with in hydraulic cylinder 1511, piston rod 1512 is connected with outstanding rope 153, the top rod chamber of hydraulic cylinder is connected with fuel tank 1515 by oil inlet pipe, pipeline is provided with electromagnetic valve 1513 and oil pump 1514, between electromagnetic valve 1513 and fuel tank 1515, be provided with oil return pipe.Structure thus, utilizes oil pump 1514 to be injected in rod chamber by hydraulic oil, and when declining, then utilizes gravity that hydraulic oil is discharged from oil return pipe.
As in Fig. 9, the bottom rodless cavity of hydraulic cylinder 1511 is communicated with air.Structure thus, makes rodless cavity can not have influence on oil-feed and the oil extraction action of piston rod 1512.
As in Fig. 9, the oil inlet pipe between electromagnetic valve 1513 and oil pump 1514 is also provided with the one way valve ended to oil pump 1514 direction.Structure thus, avoids backflowing from oil inlet pipe at hydraulic oil.Preferably, oil return pipe is also provided with choke valve, thus structure, is convenient to regulate oil return speed.With consistent with row's speed of sucker rod.Utilization realizes accurate dynamic equilibrium.
As in Fig. 9, described electromagnetic valve 1513 at least comprises two positions, be respectively oil inlet pipe conducting, oil return pipe cut-off position and oil inlet pipe cut-off, oil return pipe conducting position.Preferably, an oil inlet pipe cut-off, oil return pipe cut-off position is also included in this example.To keep the hydraulic oil in hydraulic cylinder 1511.
Oil pumper 16 is provided with the sensor of horse head 161 operating position before detecting.Structure thus, is convenient to the action coming control oil pump 1514 and electromagnetic valve 1513 according to front horse head 161 operating position, to realize dynamic equilibrium.In this example, sensor setting is on walking beam and the hinged axle of support.Also can be arranged on the output shaft of crank axle or the motor driving walking beam to swing.
During use, the outstanding rope 153 of hydraulic cylinder type counterweight 151 with rear horse head 152 is connected, the electromagnetic valve 1513 of hydraulic cylinder type counterweight 151 is connected with the rod chamber of hydraulic cylinder type counterweight 151.According to the signal of sensor passes, as in Fig. 1, before the crank driving device of oil pumper 16 drives walking beam to drive, horse head 161 is positioned at minimum position, electromagnetic valve (1513) action, oil inlet pipe conducting, make oil pump 1514 to injection liquid force feed in the rod chamber of hydraulic cylinder 1511, current horse head 161 starts to promote, electromagnetic valve action, the hydraulic oil in rod chamber is made to continue to discharge under the Action of Gravity Field of hydraulic cylinder 1511, by regulating the flow-limiting valve on oil return pipe, the oil extraction speed of the speed of oil return and sucker rod 163 is roughly consistent.Current horse head 161 arrives extreme higher position, and the hydraulic oil in rod chamber is roughly drained, enters next oil pumping stroke, until front horse head 161 is positioned at minimum position, electromagnetic valve action, oil pump 1514 is to injection liquid force feed in the rod chamber of hydraulic cylinder 1511.Preferably, fuel tank 1515 is placed in the position higher than hydraulic cylinder 1511 top dead centre, to reduce the energy consumption of injection liquid force feed.Preferred further, the motor of oil pump adopts variable-frequency motor.Preferably, owing to needing a time period to rod chamber injection liquid force feed, in real work, when horse head 161 is close to extreme lower position in the past, namely start to injection liquid force feed in rod chamber, the action of injection liquid force feed also lasts till that front horse head 161 starts the one period of moment promoted.Step thus, makes the switching between the wobbling action of whole oil pumper more level and smooth.Namely when horse head 161 is close to extreme lower position, namely start, to injection liquid force feed in rod chamber, to make whole wobbling action when close to stop in the past, have one to the effect of front horse head 161 loss of weight, to reduce when swinging switching, for the impact of equipment.And one period of moment of lifting is started at front horse head 161, still keep one period of moment to inject, be conducive to, at lifting starting stage further loss of weight, being reduced in load when front horse head 161 rises.According to the structure of different oil pumpers, also can according to the load variations of oil pumper, dynamic adjustment is injected into the weight of the hydraulic oil of rod chamber, to realize accurate dynamic equilibrium.In this example, can also increase or the counterweight that takes in sail on piston rod 1512 or hydraulic cylinder 1511, to adapt to different operating modes.
Preferred scheme is as in Fig. 1 ~ 8, and auxiliary balance device 15 is connected with the walking beam afterbody 14 of oil pumper 16 by adapter;
The structure of adapter is: housing 1 is socketed on walking beam afterbody 14, housing 1 comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate 102 with two side plates, crossover sub end plate 102 is provided with the end plate through hole 103 corresponding with the walking beam afterbody through hole 142 of walking beam afterbody 14, in end plate through hole 103, is provided with hold down gag 4;
Crossover sub end plate 102 is also installed with bracket 3 is installed, bracket 3 is installed and is provided with multiple screwed hole for being connected with auxiliary balance device 15.Structure thus, utilizes hold down gag 4 and crossover sub auxiliary balance device 15 and walking beam afterbody 14 to be linked together easily.
Preferred scheme, as in Fig. 2,6 ~ 7, at the top of housing 1, is also provided with the auxiliary balance alignment pin 6 for locating auxiliary balance device 15 near the position of crossover sub end plate 102.Structure thus, is convenient to the location of auxiliary balance device 15, is also convenient to the installation of auxiliary balance device 15.
In described hold down gag 4, outer plate 8 is connected with clip plate 9 by hold down gag lock bolt 7, and the length of outer plate 8 and clip plate 9 is greater than the internal diameter of end plate through hole 103, and the width of clip plate 9 is less than the internal diameter of end plate through hole 103;
Clip plate 9 is provided with the positioning boss 91 for being placed in walking beam afterbody through hole 142.
Structure thus, is convenient to clip plate 9 to pass end plate through hole 103 and walking beam afterbody through hole 142, is then connected with outer plate 8 by hold down gag lock bolt 7, thus by the crossover sub end plate 102 of crossover sub together with the end plate connection of walking beam afterbody 14.Positioning boss 91 is convenient to the accurate location of the end plate realizing crossover sub end plate 102 and walking beam afterbody 14, also make stressed more reliable, namely on positioning boss 91, produce shearing force between crossover sub and walking beam afterbody 14, the frictional force without using crossover sub and walking beam afterbody 14 end face forms a fixed connection.
At the top of housing 1, be also provided with the auxiliary balance alignment pin 6 for locating auxiliary balance device 15 near the position of crossover sub end plate 102;
Also be provided with multiple walking beam afterbody locating hole 101 corresponding with the walking beam afterbody alignment pin 141 on walking beam afterbody 14 at the top board of housing 1, walking beam afterbody locating hole 101 is slotted hole.Structure thus, is convenient to the location and installation of auxiliary balance device 15 and adapter, is also convenient in installation process temporary fixed.
Preferred scheme, as in Fig. 2,6,7, crossover sub end plate 102 is also provided with the horizontal location hole 104 corresponding with the walking beam afterbody horizontal pin 144 of walking beam afterbody 14.Structure thus, is convenient to the accurate location realizing auxiliary balance device 15.
Adjusting device 5 is also provided with between two side plates of housing 1;
In adjusting device 5, load body 11 two ends are connected with two side plates of housing 1 by adjusting device fastening bolt 10, and load body 11 is provided with horizontal adjusting bolt 12 and vertical adjusting bolt 13; Structure thus, realize further accurately, reliably locating, and it is fixing to be convenient to installation.
After adjusting device 5 is installed, horizontal adjusting bolt 12 withstands the walking beam afterbody free bearing 143 of walking beam afterbody 14, and vertical adjusting bolt 13 withstands the bottom surface of walking beam afterbody 14.Structure thus, is convenient to the position adjusting whole auxiliary balance device 15, improves installation accuracy, and makes fixing more reliable.
Multiple reinforcing rib 2 is provided with between the side plate of crossover sub end plate 102 and housing 1.Structure thus, that improves total is subject to force intensity.
When using installation, crossover sub housing 1 is enclosed within the walking beam afterbody 14 of oil pumper 16, and afterbody is adjacent to.By the clip plate 9 of hold down gag 4 horizontally through the end plate through hole 103 of end and walking beam afterbody through hole 142, be deep into the inside of walking beam on pumping units afterbody 14, in inside, clip plate 9 touched end face and place.Use the hold down gag lock bolt 7 of hold down gag 4 to connect the outer plate 8 being close to crossover sub end plate 102, thus the crossover sub end plate 102 of walking beam on pumping units afterbody 14 and crossover sub housing 1 is bound together.Below housing 1, the load body 11 of adjusting device 5 is locked on crossover sub housing 1 side plate by the adjusting device fastening bolt 10 at two ends.Use horizontal adjusting bolt 12 to withstand walking beam on pumping units afterbody 14 lower bearing seat, vertical adjusting bolt 13, screw and upwards withstand walking beam on pumping units afterbody 14 bottom surface, thus by crossover sub and walking beam locking binding.
After walking beam on pumping units auxiliary balance device crossover sub installs, oil pumper servicing unit 15 to be installed can be made to be positioned at walking beam afterbody by auxiliary balance alignment pin 6, by installing the screwed hole on bracket 3, use bolt tightening, the auxiliary balance device 15 making oil pumper to be installed is fixedly mounted on walking beam on pumping units afterbody 14 by crossover sub of the present invention.
The above embodiments are only the preferred technical solution of the present invention, and should not be considered as restriction of the present invention, and the embodiment in the application and the feature in embodiment, when not conflicting, can be combined mutually.The technical scheme that protection scope of the present invention should be recorded with claim, the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain.Namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (10)
1. with an oil pumper for auxiliary balance device, comprise oil pumper (16), it is characterized in that: auxiliary balance device (15) is connected with the walking beam afterbody (14) of oil pumper (16);
The structure of auxiliary balance device (15) is, rear horse head (152) is fixedly connected with one end of connecting rod (154), the other end of connecting rod (154) is connected with walking beam afterbody (14), and rear horse head (152) is connected with hydraulic cylinder type counterweight (151) by outstanding rope (153).
2. a kind of oil pumper with auxiliary balance device according to claim 1, it is characterized in that: in described hydraulic cylinder type counterweight (151), piston rod (1512) is provided with in hydraulic cylinder (1511), piston rod (1512) is connected with outstanding restrict (153), the top rod chamber of hydraulic cylinder is connected with fuel tank (1515) by oil inlet pipe, pipeline is provided with electromagnetic valve (1513) and oil pump (1514), between electromagnetic valve (1513) and fuel tank (1515), be provided with oil return pipe.
3. a kind of oil pumper with auxiliary balance device according to claim 2, is characterized in that: the bottom rodless cavity of hydraulic cylinder (1511) is communicated with air.
4. a kind of oil pumper with auxiliary balance device according to claim 2, is characterized in that: the oil inlet pipe between electromagnetic valve (1513) and oil pump (1514) is also provided with the one way valve ended to oil pump (1514) direction.
5. a kind of oil pumper with auxiliary balance device according to claim 2, is characterized in that: described electromagnetic valve (1513) at least comprises two positions, be respectively oil inlet pipe conducting, oil return pipe cut-off position and oil inlet pipe cut-off, oil return pipe conducting position.
6. a kind of oil pumper with auxiliary balance device according to claim 2, is characterized in that: the sensor being provided with horse head (161) operating position before detecting on oil pumper (16).
7. a kind of oil pumper with auxiliary balance device according to claim 1, is characterized in that: auxiliary balance device (15) is connected with the walking beam afterbody (14) of oil pumper (16) by adapter;
The structure of adapter is: housing (1) is socketed on walking beam afterbody (14), housing (1) comprises a top board and two side plates, a top board is fixedly connected with crossover sub end plate (102) with two side plates, crossover sub end plate (102) is provided with the end plate through hole (103) corresponding with the walking beam afterbody through hole (142) of walking beam afterbody (14), in end plate through hole (103), is provided with hold down gag (4);
Crossover sub end plate (102) is also installed with bracket (3) is installed, bracket (3) is installed and is provided with multiple screwed hole for being connected with auxiliary balance device (15).
8. a kind of oil pumper with auxiliary balance device according to claim 7, it is characterized in that: in described hold down gag (4), outer plate (8) is connected with clip plate (9) by hold down gag lock bolt (7), the length of outer plate (8) and clip plate (9) is greater than the internal diameter of end plate through hole (103), and the width of clip plate (9) is less than the internal diameter of end plate through hole (103);
Clip plate (9) is provided with the positioning boss (91) for being placed in walking beam afterbody through hole (142).
9. a kind of oil pumper with auxiliary balance device according to claim 7, it is characterized in that: at the top of housing (1), being also provided with the auxiliary balance alignment pin (6) for locating auxiliary balance device (15) near the position of crossover sub end plate (102);
Also be provided with multiple walking beam afterbody locating hole (101) corresponding with the walking beam afterbody alignment pin (141) on walking beam afterbody (14) at the top board of housing (1), walking beam afterbody locating hole (101) is slotted hole.
10. a kind of walking beam on pumping units auxiliary balance device crossover sub according to claim 1, is characterized in that: between two side plates of housing (1), be also provided with adjusting device (5);
In adjusting device (5), load body (11) two ends are connected with two side plates of housing (1) by adjusting device fastening bolt (10), and load body (11) is provided with horizontal adjusting bolt (12) and vertical adjusting bolt (13);
After adjusting device (5) is installed, horizontal adjusting bolt (12) withstands the walking beam afterbody free bearing (143) of walking beam afterbody (14), and vertical adjusting bolt (13) withstands the bottom surface of walking beam afterbody (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516741.XA CN105089575B (en) | 2015-08-21 | 2015-08-21 | Oil pumper with auxiliary balance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516741.XA CN105089575B (en) | 2015-08-21 | 2015-08-21 | Oil pumper with auxiliary balance device |
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| Publication Number | Publication Date |
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| CN105089575A true CN105089575A (en) | 2015-11-25 |
| CN105089575B CN105089575B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510516741.XA Active CN105089575B (en) | 2015-08-21 | 2015-08-21 | Oil pumper with auxiliary balance device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305800A (en) * | 2020-03-31 | 2020-06-19 | 胡勇 | Interactive balance device of beam-pumping unit and operation method thereof |
| CN113417605A (en) * | 2021-07-05 | 2021-09-21 | 浙江中铭工程机械有限公司 | Hydraulic control type automatic oil pumping machine |
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| CN201068786Y (en) * | 2007-07-22 | 2008-06-04 | 周宏强 | Beam type hydraulic energy-saving oil pump |
| CN202531126U (en) * | 2012-03-26 | 2012-11-14 | 张玉锐 | Full-balanced energy-saving device of walking-beam pumping unit |
| CN203892450U (en) * | 2014-06-11 | 2014-10-22 | 延长油田股份有限公司 | Hydraulic balancer of beam-pumping unit |
| CN204920916U (en) * | 2015-08-21 | 2015-12-30 | 长江大学 | Beam -pumping unit with supplementary balancing unit |
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| US5528947A (en) * | 1992-12-21 | 1996-06-25 | Wang; Pucheng | Rod pumping assembly |
| CN201068786Y (en) * | 2007-07-22 | 2008-06-04 | 周宏强 | Beam type hydraulic energy-saving oil pump |
| CN202531126U (en) * | 2012-03-26 | 2012-11-14 | 张玉锐 | Full-balanced energy-saving device of walking-beam pumping unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305800A (en) * | 2020-03-31 | 2020-06-19 | 胡勇 | Interactive balance device of beam-pumping unit and operation method thereof |
| CN111305800B (en) * | 2020-03-31 | 2023-02-03 | 松原市前进石油工程机械有限公司 | Interactive balance device of beam-pumping unit and operation method thereof |
| CN113417605A (en) * | 2021-07-05 | 2021-09-21 | 浙江中铭工程机械有限公司 | Hydraulic control type automatic oil pumping machine |
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| CN105089575B (en) | 2017-06-13 |
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Effective date of registration: 20220627 Address after: 163712 business service center b-business service 2207, district g, Aolin international apartment business district, Ranghulu District, Daqing City, Heilongjiang Province Patentee after: Daqing Wanwu Petroleum Machinery Manufacturing Co.,Ltd. Address before: 434023 Yangtze University, 1 South Ring Road, Hubei, Jingzhou Patentee before: Yangtze University |
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