CN101265795A - Oil pumping machine - Google Patents

Oil pumping machine Download PDF

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Publication number
CN101265795A
CN101265795A CNA2008100615284A CN200810061528A CN101265795A CN 101265795 A CN101265795 A CN 101265795A CN A2008100615284 A CNA2008100615284 A CN A2008100615284A CN 200810061528 A CN200810061528 A CN 200810061528A CN 101265795 A CN101265795 A CN 101265795A
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CN
China
Prior art keywords
sucker rod
movable pulley
pylon
pulley
fixed
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Pending
Application number
CNA2008100615284A
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Chinese (zh)
Inventor
潘式正
郝殿勇
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NINGBO XINDA (GROUP) CO Ltd
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NINGBO XINDA (GROUP) CO Ltd
Priority date (The priority date 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 date listed.)
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Application filed by NINGBO XINDA (GROUP) CO Ltd filed Critical NINGBO XINDA (GROUP) CO Ltd
Priority to CNA2008100615284A priority Critical patent/CN101265795A/en
Publication of CN101265795A publication Critical patent/CN101265795A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a pumping unit, which comprises a main machine (1), at least a suit of sucker rod (7) and a fixing frame (6) for the sucker rod, a counterweight frame (8) that is provided with a balanced counterweight block (9) or another suit of sucker rod (7) and a fixing frame (6) for the sucker rod, a tower (11) and a pulley component. The main machine (1) can be dismountable and connected with the tower (11); one end of the main machine (1) can be dismountable and connected with the fixing frame (6) for the sucker rod and the sucker rod (7), while the other end can be dismountable and connected with the counterweight frame (8) that is provided with the balanced counterweight block (9) or another suit of sucker rod (7) and a fixing frame (6) for the sucker rod; the main machine (1) adopts the permanent magnet synchronous motor, and an encoder (16) is arranged on the rotating axle of the motor. By adopting the device, the pumping unit reduces the movement nodes, and the driving becomes steady, thereby greatly reducing energy consumption; the pumping unit can also manage the network and control the pumping unit from a long distance.

Description

Oil pumper
Technical field
The present invention relates to a kind of oil exploitation machinery, specifically is a kind of oil pumper.
Background technology
At present, the used oil pumper of oilfield is varied, and Cheng Shu machine is a beam pumping unit the most.The motor direction operation of this oil pumper, driving the bearing pin of walking beam on carrier base through belt gearing, gear reduction unit and quadric chain swings repeatedly, by suspension arrangement, jamming rod device, polished rod, sucker rod and balancing weight Compositional balance actuating system, make the down-hole reciprocating oil pump carry out the oil pumping work of upper and lower motion again.This beam pumping unit exists following shortcoming: 1. the movement node of quadric chain is more, and be that the oscillating motion that rotatablely moves by two connecting rods by rocking bar becomes rectilinear motion, thereby driving force is not steady, cause transmission efficiency low, so energy consumption is big.What 2. beam pumping unit adopted is all lower asynchronous motor of efficient, power, through the deceleration of gear trains at different levels, also consumes part power.3. present beam pumping unit is because working conditions such as oil viscosity change when needing to change running parameter, and what unique energy changed only is that the speed that changes belt pulley recently changes the such parameter of the oil pumping frequency, and can not change the running parameter of different work steps.4. be to be managed independently by artificial unit to the management of beam pumping unit at present, the parameter that can regulate only is again the velocity ratio that changes belt pulley, and this change can only by the workman at the scene manual operations just can finish, and can not realize that long distance network manages and control.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and can cut down the consumption of energy, running parameter can freely be set, can realize the oil pumper of long distance network management and control.
For solving the problems of the technologies described above, oil pumper provided by the invention comprises main frame, at least one cover sucker rod and sucker rod fixed mount thereof, and described oil pumper also comprises and balance is housed to the counterweight frame of pouring weight or other cover sucker rod and sucker rod fixed mount, pylon and a pulley assembly; Described main frame is detachable to be connected on the pylon, main frame is through a detachable cover sucker rod fixed mount and the sucker rod that be connected with of pulley assembly one end, and counterweight frame or other cover sucker rod and the sucker rod fixed mount thereof of balance to pouring weight is equipped with in the detachable connection of the other end; Described main motor adopts permagnetic synchronous motor, supporting base, bearing, axis of rotation, encoder before and after comprising; Wherein, motor one end is connected on the preceding supporting base, the front and rear cover of motor has all designed traction sheave, one end of described axis of rotation and back end cover for motor interference fit, the other end is connected on the rear branching holder through bearing, encoder inner ring and axis of rotation are fixed, and encoder outer ring and rear branching holder are fixed, and the front and back supporting base is detachable to be connected on the described pylon.
After adopting above structure, owing to replaced original linkage with pulley assembly, reduced movement node, draw mode changes into rectilinear motion by the gyration of traction sheave by wire rope, and drives and become steadily, thus the energy consumption of greatly reducing.Owing to replaced asynchronous motor with permasyn morot, not only raise the efficiency, also reduce the used up power of gear drive, thereby reduced energy consumption.Again owing on main frame, be provided with encoder, thereby can on different work steps, technological parameter can freely be set as required, help raising the efficiency, also can realize the network management of remote, group's machine and control automatically oil pumper by keyboard operation.
Described main frame is installed in the top of pylon, and described oil pumper also comprises the counterweight frame that equilibrate counterweight is housed, and described pulley assembly comprises directive wheel, movable pulley I, movable pulley II, wire rope; Wherein, directive wheel is fixed on pylon top, a detachable cover sucker rod fixed mount and the sucker rod that be connected with of movable pulley I, the detachable counterweight frame that equilibrate counterweight is housed that is connected with of movable pulley II, the wire rope sliding fit is on movable pulley I, directive wheel, traction sheave, movable pulley II, and the two ends of wire rope are fixed on tower top.After adopting this structure, it is more steady to move, and further cuts down the consumption of energy.
Described main frame is installed in the pylon bottom, described oil pumper also comprises the counterweight frame that equilibrate counterweight is housed, described pulley assembly comprises movable pulley I, movable pulley II, fixed pulley I, fixed pulley II, wire rope, described fixed pulley I, fixed pulley II is fixed on tower top, a detachable cover sucker rod fixed mount and the sucker rod that be connected with of movable pulley I, the detachable counterweight frame that equilibrate counterweight is housed that is connected with of movable pulley II, the wire rope sliding fit is at movable pulley I, fixed pulley I, traction sheave, fixed pulley II, on the movable pulley II, the two ends of wire rope are fixed on tower top.After adopting this structure, because main frame is arranged on the pylon bottom, be more convenient for maintenance and installation.
Described main frame is installed in the top of pylon, described oil pumper also comprises an other cover sucker rod and a sucker rod fixed mount thereof, described pulley assembly comprises movable pulley I, movable pulley II, directive wheel, transition wheel, wire rope, described directive wheel, transition wheel is fixed on tower top, a detachable cover sucker rod fixed mount and the sucker rod that be connected with of movable pulley I, detachable another set of sucker rod fixed mount and the sucker rod of being connected with of movable pulley II, the wire rope sliding fit is at movable pulley I, directive wheel, traction sheave, transition wheel, on the movable pulley II, the two ends of wire rope are fixed on tower top.After adopting this structure, change sucker rod into,, increased by two transition wheels, so production efficiency will be turned over for strengthening two well spacings between the oil well and guaranteeing enough traction capacities because the counterweight frame of equilibrate counterweight will be housed.
Described main frame is installed in the bottom of pylon, described oil pumper also comprises an other cover sucker rod and a sucker rod fixed mount thereof, described pulley assembly comprises movable pulley I, movable pulley II, transition wheel, wire rope, described transition wheel is fixed on tower top, a detachable cover sucker rod fixed mount and the sucker rod that be connected with of movable pulley I, detachable another set of sucker rod fixed mount and the sucker rod of being connected with of movable pulley II, the wire rope sliding fit is on movable pulley I, transition wheel, traction sheave, transition wheel, movable pulley II, and the two ends of wire rope are fixed on tower top.After adopting this structure, this oil pumper becomes the fuel-displaced mode of twin-well, enhance productivity, and because main frame is arranged on the pylon bottom, be more convenient for maintenance and installation.
Description of drawings
Fig. 1 is the structural representation of the main frame of oil pumper of the present invention when placing the top;
Fig. 2 is the main frame sectional structure schematic diagram of oil pumper of the present invention;
Fig. 3 is the enforcement block diagram that oil pumper of the present invention is realized automatic management;
Fig. 4 is the structural representation that the main frame of oil pumper of the present invention places when bottom;
Fig. 5 is the structural representation of the fuel-displaced mode main frame of oil pumper twin-well of the present invention when placing the top;
Fig. 6 is the structural representation that the fuel-displaced mode main frame of oil pumper twin-well of the present invention places when bottom.
Wherein, 1, main frame; 2, traction sheave; 3, directive wheel; 4, wire rope; 5, movable pulley I; 6, sucker rod fixed mount; 7, sucker rod; 8, counterweight frame; 9, equilibrate counterweight; 10, movable pulley II; 11, pylon; 12, preceding supporting base; 13, rear branching holder; 14, bearing; 15, axis of rotation; 16, encoder; 17, fixed pulley I; 18, fixed pulley II; 19, transition wheel.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.
Structural representation when placing tower top by the main frame of oil pumper of the present invention shown in Figure 1 as can be known, this oil pumper comprises main frame 1, cover a sucker rod 7 and a sucker rod fixed mount 6 thereof, counterweight frame 8, pylon 11 and the pulley assembly of balance to pouring weight 9 is housed.Described main frame 1 motor adopts permagnetic synchronous motor, and is provided with encoder 21.Main frame 1 detachable pylon 11 tops that are connected, main frame 1 is through a detachable cover sucker rod fixed mount 6 and the sucker rod 7 that be connected with of pulley assembly one end, and the counterweight frame 8 of balance to pouring weight 9 is equipped with in the detachable connection of the other end.
Described pulley assembly comprises directive wheel 3, movable pulley I 5, movable pulley II 10, wire rope 4.Wherein, directive wheel 3 is fixed on pylon 11 tops, movable pulley I 5 a detachable cover sucker rod fixed mount 6 and a sucker rod 7, the movable pulley II 10 detachable counterweight frames 8 that equilibrate counterweight 9 is housed that are connected with of being connected with.Wire rope 4 sliding fits are on movable pulley I 5, directive wheel 3, traction sheave 2, movable pulley II 10, and the two ends of wire rope 4 are fixed on pylon 11 tops.In other words, an end of wire rope 4 is fixed on pylon 11 tops, and the other end is fixed on pylon 11 tops after walking around movable pulley I 5, directive wheel 3, traction sheave 2, movable pulley II 10 successively.
When oil pumper main frame 1 rotated, traction steel-cable 4 was done upper and lower motion under the effect of frictional force, thereby drove sucker rod 7 and the relatively upper and lower motion of equilibrate counterweight 9 dos, realized the oil pumping function to oil well.
By the main frame sectional structure schematic diagram of oil pumper of the present invention shown in Figure 2 as can be known, described main frame 1 comprises motor, preceding supporting base 12, rear branching holder 13, bearing 14, axis of rotation 15, encoder 16.Wherein, motor one end is connected on the preceding supporting base 12, the front and rear cover of motor has all designed traction sheave 2, one end of described axis of rotation 15 and back end cover for motor interference fit, the other end is connected on the rear branching holder 13 through bearing 14, encoder 16 inner rings and axis of rotation 15 are fixing, and encoder 16 outer rings and rear branching holder 13 are fixing, forward and backward supporting base 12,13 all detachable being connected on the described pylon 11
For the signal of realizing rotary encoder 16 produces and transmission, the axle system of oil pumper main frame 1 is divided into motor shaft and axis of rotation 15, at this moment, when electric motor end cap rotates, axis of rotation 15 is and then rotation also, the inner ring of encoder 16 is and then rotation synchronously also, and the outer ring of encoder 16 is then fixing with rear branching holder 12, so encoder 16 produces the frequency converter that rotating signal offers oil pumper.
Oil pumper is when oil pumping, oil viscosity can directly have influence on flowability, wellability and the oil of the oil viscosity to oil pick-up tube, when viscosity is hanged down, mobile, wetting property is all good, the coefficient of viscosity is also low, like this after last oil is drawn up, the outer oil of pump can enter oil pump very soon, the time of oil storage just is short, and the oil that enters oil pump can be thus lifted in the oil pipeline on ground again very soon, and lifting force is also little.Viscosity is big, and situation is just in time opposite.This just needs to change the operational factor of oil pumper, need shut down just and can carry out because beam pumping unit changes parameter, does not also allow often to carry out even therefore need to adjust.
The enforcement block diagram of realizing automatic management by oil pumper of the present invention shown in Figure 3 as can be known, on main frame, adopt the mode of frequency conversion drive, simultaneously flow transmitter is set on oil pipeline operational factor is set, oil pumper operational factor (as oil storage time, acceleration, stabilized speed, deceleration and sucker rod decline acceleration, stable operation speed, deceleration etc. and time relation curve when sucker rod rises) can be set driver by keyboard or network.Driver will drive the operation of oil pumper main frame by setup parameter.Running status can pass to central controller to the operating mode of the oil viscosity that predicts, output and oil pumper indirectly or directly by digital ammeter (monitoring motor output torque), encoder (monitoring velocity, direction of rotation), digital flow meter sensors such as (flows of monitoring oil), calculate whether be operated in optimum state by the degree of establishment in advance then, thereby automatic or administrative staff revise operational factor by experience, make oil pumper be in optimum Working, computer also can be finished statistics and management such as fault, operation conditions, output in this process.
Structural representation when placing the pylon bottom by the main frame of oil pumper of the present invention shown in Figure 4 as can be known, this oil pumper comprises main frame 1, cover a sucker rod 7 and a sucker rod fixed mount 6 thereof, counterweight frame 8, pylon 11 and the pulley assembly of balance to pouring weight 9 is housed.Described main frame 1 detachable pylon 11 bottoms that are connected, main frame 1 is through a detachable cover sucker rod fixed mount 6 and the sucker rod 7 that be connected with of pulley assembly one end, and the counterweight frame 8 of balance to pouring weight 9 is equipped with in the detachable connection of the other end.
Described pulley assembly comprises movable pulley I 5, movable pulley II 10, fixed pulley I 17, fixed pulley II 18, wire rope 4, described fixed pulley I 17, fixed pulley II 18 are fixed on pylon 11 tops, movable pulley I 5 a detachable cover sucker rod fixed mount 6 and a sucker rod 7, the movable pulley II 10 detachable counterweight frames 8 that equilibrate counterweight 9 is housed that are connected with of being connected with.Wire rope 4 sliding fits are on movable pulley I 5, fixed pulley I 17, traction sheave 2, fixed pulley II 18, movable pulley II 10, and the two ends of wire rope 4 are fixed on pylon 11 tops.In other words, an end of wire rope 4 is fixed on pylon 11 tops, and the other end is fixed on pylon 11 tops after walking around movable pulley I 5, fixed pulley I 17, traction sheave 2, fixed pulley II 18, movable pulley II 10 successively.
As first kind of variation of oil pumper of the present invention, main frame 1 places the bottom of pylon 11, need to increase by two fixed pulleys, and its operating principle places the situation at top of pylon 11 the same with main frame 1, and this moment can be more convenient to the installation and the maintenance of main frame 1.
Structural representation when placing tower top by the fuel-displaced mode main frame of the twin-well of oil pumper of the present invention shown in Figure 5 comprises main frame 1, two cover sucker rod 7 and sucker rod fixed mount 6, pylon 11 and pulley assemblies as can be known.The described main frame 1 detachable top that is connected pylon 11, main frame 1 is through a detachable cover sucker rod fixed mount 6 and the sucker rod 7 that be connected with of pulley assembly one end, an other cover sucker rod 7 and the sucker rod fixed mount 6 thereof of the detachable connection of the other end.
Described pulley assembly comprises movable pulley I 5, movable pulley II 10, directive wheel 3, transition wheel 19, wire rope 4, described directive wheel 3, transition wheel 19 are fixed on pylon 11 tops, movable pulley I 5 a detachable cover sucker rod fixed mount 6 and a sucker rod 7, movable pulley II 10 detachable another set of sucker rod fixed mount 6 and the sucker rods 7 of being connected with of being connected with.Wire rope 4 sliding fits are on movable pulley I 5, directive wheel 3, traction sheave 2, transition wheel 19, movable pulley II 10, and the two ends of wire rope 4 are fixed on pylon 11 tops.In other words, an end of wire rope 4 is fixed on pylon 11 tops, and the other end is fixed on pylon 11 tops after walking around movable pulley I 5, directive wheel 3, traction sheave 2, transition wheel 19, movable pulley II 10 successively.
Second kind of variation as oil pumper of the present invention, main frame 1 still places the top of pylon 11, the original counterweight frame that equilibrate counterweight 9 is housed 8 is changed into the sucker rod fixed mount 6 that has sucker rod 7, it is fuel-displaced so just to become twin-well, closely also are utilized fully half useless power, the loss of time in the former work period of this moment, and production efficiency will be turned over.
The structural representation that places pylon when bottom by the fuel-displaced mode main frame of oil pumper twin-well of the present invention shown in Figure 6 as can be known, this oil pumper comprises main frame 1, two cover sucker rod 7 and sucker rod fixed mount 6, pylon 11 and pulley assemblies.Described main frame 1 detachable pylon 11 bottoms that are connected, main frame 1 is through a detachable cover sucker rod fixed mount 6 and the sucker rod 7 that be connected with of pulley assembly one end, an other cover sucker rod 7 and the sucker rod fixed mount 6 thereof of the detachable connection of the other end.
Described pulley assembly comprises movable pulley I 5, movable pulley II 10, transition wheel 19, wire rope 4, described transition wheel 19 is fixed on pylon 11 tops, movable pulley I 5 a detachable cover sucker rod fixed mount 6 and a sucker rod 7, detachable another set of sucker rod fixed mount 6 and the sucker rods 7 of being connected with of movable pulley II10 of being connected with.Wire rope 4 sliding fits are on movable pulley I 5, transition wheel 19, traction sheave 2, transition wheel 19, movable pulley II 10, and the two ends of wire rope 4 are fixed on pylon 11 tops.In other words, an end of wire rope 4 is fixed on pylon 11 tops, and the other end is fixed on pylon 11 tops after walking around movable pulley I 5, transition wheel 19, traction sheave 2, transition wheel 19, movable pulley II 10 successively.
The third variation as oil pumper of the present invention, main frame 1 places the bottom of pylon 11, the original counterweight frame that equilibrate counterweight 9 is housed 8 is changed into the sucker rod fixed mount 6 that has sucker rod 7, it is fuel-displaced so just to become twin-well, closely also are utilized fully half useless power, the loss of time in the former work period of this moment, and production efficiency will be turned over.
More than these variations all fall within the protection domain of oil pumper of the present invention.

Claims (5)

1, a kind of oil pumper, comprise main frame (1), at least one cover sucker rod (7) and sucker rod fixed mount (6) thereof, it is characterized in that: described oil pumper also comprises and balance is housed to the counterweight frame (8) of pouring weight (9) or other cover sucker rod (7) and sucker rod fixed mount (6), pylon (11) and a pulley assembly; Described main frame (1) motor adopts permagnetic synchronous motor, and be provided with encoder (21), main frame (1) is detachable to be connected on the pylon (11), main frame (1) is through a detachable cover sucker rod fixed mount (6) and the sucker rod (7) that be connected with of pulley assembly one end, and counterweight frame (8) or other cover sucker rod (7) and the sucker rod fixed mount (6) thereof of balance to pouring weight (9) is equipped with in the detachable connection of the other end; Supporting base (12,13), bearing (14), axis of rotation (15), encoder (16) before and after described main frame (1) also comprises; Wherein, motor one end is connected on the preceding supporting base (12), the front and rear cover of motor has all designed traction sheave (2), one end of described axis of rotation (15) and back end cover for motor interference fit, the other end is connected on the rear branching holder (13) through bearing (14), encoder (16) inner ring and axis of rotation (15) are fixing, and encoder (16) outer ring and rear branching holder (13) are fixing, and front and back supporting base (12,13) is detachable to be connected on the described pylon (11).
2, oil pumper according to claim 1, it is characterized in that: described main frame (1) is installed in the top of pylon (11), described oil pumper also comprises the counterweight frame (8) that equilibrate counterweight (9) are housed, and described pulley assembly comprises directive wheel (3), movable pulley I (5), movable pulley II (10), wire rope (4); Wherein, directive wheel (3) is fixed on pylon (11) top, a detachable cover sucker rod fixed mount (6) and the sucker rod (7) that be connected with of movable pulley I (5), the detachable counterweight frame (8) that equilibrate counterweight (9) are housed that is connected with of movable pulley II (10), wire rope (4) sliding fit is on movable pulley I (5), directive wheel (3), traction sheave (2), movable pulley II (10), and the two ends of wire rope (4) are fixed on pylon (11) top.
3, oil pumper according to claim 1, it is characterized in that: described main frame (1) is installed in pylon (11) bottom, described oil pumper also comprises the counterweight frame (8) that equilibrate counterweight (9) are housed, described pulley assembly comprises movable pulley I (5), movable pulley II (10), fixed pulley I (17), fixed pulley II (18), wire rope (4), described fixed pulley I (17), fixed pulley II (18) is fixed on pylon (11) top, a detachable cover sucker rod fixed mount (6) and the sucker rod (7) that be connected with of movable pulley I (5), the detachable counterweight frame (8) that equilibrate counterweight (9) are housed that is connected with of movable pulley II (10), wire rope (4) sliding fit is in movable pulley I (5), fixed pulley I (17), traction sheave (2), fixed pulley II (18), on the movable pulley II (10), the two ends of wire rope (4) are fixed on pylon (11) top.
4, oil pumper according to claim 1, it is characterized in that: described main frame (1) is installed in the top of pylon (11), described oil pumper also comprises an other cover sucker rod (7) and a sucker rod fixed mount (6) thereof, described pulley assembly comprises movable pulley I (5), movable pulley II (10), directive wheel (3), transition wheel (19), wire rope (4), described directive wheel (3), transition wheel (19) is fixed on pylon (11) top, a detachable cover sucker rod fixed mount (6) and the sucker rod (7) that be connected with of movable pulley I (5), detachable another set of sucker rod fixed mount (6) and the sucker rod (7) of being connected with of movable pulley II (10), wire rope (4) sliding fit is in movable pulley I (5), directive wheel (3), traction sheave (2), transition wheel (19), on the movable pulley II (10), the two ends of wire rope (4) are fixed on pylon (11) top.
5, oil pumper according to claim 1, it is characterized in that: described main frame (1) is installed in the bottom of pylon (11), described oil pumper also comprises an other cover sucker rod (7) and a sucker rod fixed mount (6) thereof, described pulley assembly comprises movable pulley I (5), movable pulley II (10), transition wheel (19), wire rope (4), described transition wheel (19) is fixed on pylon (11) top, a detachable cover sucker rod fixed mount (6) and the sucker rod (7) that be connected with of movable pulley I (5), detachable another set of sucker rod fixed mount (6) and the sucker rod (7) of being connected with of movable pulley II (10), wire rope (4) sliding fit is in movable pulley I (5), transition wheel (19), traction sheave (2), transition wheel (19), on the movable pulley II (10), the two ends of wire rope (4) are fixed on pylon (11) top.
CNA2008100615284A 2008-05-01 2008-05-01 Oil pumping machine Pending CN101265795A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011026308A1 (en) * 2009-09-02 2011-03-10 北京广朋润泽新能源技术开发有限公司 Pumping unit with multistage unloading device and self orotection mechanism
CN102828728A (en) * 2012-08-30 2012-12-19 周靖林 Energy-saving oil pumping unit in structure with radial load and torque separated
CN101775970B (en) * 2010-01-12 2013-11-06 马俊金 Oil pumping machine
CN104140053A (en) * 2014-01-17 2014-11-12 成都绿迪科技有限公司 Emergency drive device
CN105019866A (en) * 2015-07-23 2015-11-04 浙江西传电气科技有限公司 High-efficiency direct drive type pumping unit with single movable pulley and single fixed pulley
CN112814627A (en) * 2021-03-22 2021-05-18 山东创新石油技术有限公司 Electrically controlled reversing direct-drive beam pumping unit
CN113756755A (en) * 2021-10-08 2021-12-07 山东创新石油技术有限公司 Energy storage integrated electric balance beam-pumping unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011026308A1 (en) * 2009-09-02 2011-03-10 北京广朋润泽新能源技术开发有限公司 Pumping unit with multistage unloading device and self orotection mechanism
CN101775970B (en) * 2010-01-12 2013-11-06 马俊金 Oil pumping machine
CN102828728A (en) * 2012-08-30 2012-12-19 周靖林 Energy-saving oil pumping unit in structure with radial load and torque separated
CN104140053A (en) * 2014-01-17 2014-11-12 成都绿迪科技有限公司 Emergency drive device
CN105019866A (en) * 2015-07-23 2015-11-04 浙江西传电气科技有限公司 High-efficiency direct drive type pumping unit with single movable pulley and single fixed pulley
CN105019866B (en) * 2015-07-23 2018-03-06 浙江西传电气科技有限公司 A kind of efficient direct-drive oil extractor with single action pulley and single fixed pulley
CN112814627A (en) * 2021-03-22 2021-05-18 山东创新石油技术有限公司 Electrically controlled reversing direct-drive beam pumping unit
CN113756755A (en) * 2021-10-08 2021-12-07 山东创新石油技术有限公司 Energy storage integrated electric balance beam-pumping unit

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Application publication date: 20080917