CN102140905A - Flexible-transmission composite balanced oil sucking machine - Google Patents
Flexible-transmission composite balanced oil sucking machine Download PDFInfo
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- CN102140905A CN102140905A CN2011100750288A CN201110075028A CN102140905A CN 102140905 A CN102140905 A CN 102140905A CN 2011100750288 A CN2011100750288 A CN 2011100750288A CN 201110075028 A CN201110075028 A CN 201110075028A CN 102140905 A CN102140905 A CN 102140905A
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Abstract
The invention relates to a flexible-transmission composite balanced oil sucking machine. A balanced system of the flexible-transmission composite balanced oil sucking machine realizes secondary balance by adopting a B balance block; an A balance block rotates for a half circle, the B balance block rotates for one circle; and a motor constantly does positive work when being positioned at 12 o'clock and 6 o'clock in such a way that the position of an A crank at the 12 o'clock and 6 o'clock is staggered with the position of a B crank at the 12 o'clock and 6 o'clock, therefore the problem that the motor of the traditional oil sucking machine does negative work is solved; and the flexible-transmission composite balanced oil sucking machine effectively balances the maximum value of output power within the half circle for which the A crank rotates and reduces the output power of the motor and the impact of loads on a speed reducer and the motor and enables the motor to constantly do the positive work, thereby enhancing the system efficiency.
Description
Technical field
The present invention relates to a kind of oil field equipment, concrete is a kind of oil pumper.
Background technology
Pumping production accounts for more than 90% of China's field produces machine-pumped oil well.The beam pumping unit main body adopts quadric chain at present, and oil pumper adopts sucker rod to connect to oil well pump, and the subject matter of existence is that there is negative value in the power of motor curve, system effectiveness is low, energy consumption is big, the iron and steel cement consumption is big.Sucker rod oppositely dragged the crank rotation when its main cause was the oil pumper down stroke, motor is in that generating state, power transmission link are many, motor power output and the reducer torque ripple is big, size and deadweight are bigger, thereby need heavy-duty motor, the energy consumption height, pay(useful) load is low.
Summary of the invention
In order to solve the existing problem that the pumping unit energy transmission link is many, system effectiveness is low, volume is big, energy consumption is big, the iron and steel cement consumption is big, energy consumption is high, pay(useful) load is low, the invention provides a kind of flexible transmission compound balanced pumping unit, this oil pumper operates steadily, simple in structure, flexible transmission has replaced quadric chain, motor power output and reducer torque ripple have been reduced, and realize the power of motor perseverance be on the occasion of, energy-efficient.
For achieving the above object, the technical scheme of the application's employing is: a kind of flexible transmission compound balanced pumping unit comprises gantry base system, power-transmission system, brake system, balance sysmte and exchange system; Described gantry base system comprises casing, frame, base and browpiece, and wherein browpiece comprises bracket head and upper and lower crossbeam; Described brake system adopts the drum brakes structure; Described power-transmission system comprises magneto, reducer, back shaft and sprocket chain strip transmission mechanism, and the two ends of back shaft are provided with heavily loaded roller bearing and are fixed on the front and rear panel of casing; Wherein the sprocket chain strip transmission mechanism comprises A, B, four sprocket wheels of C, D and A driving-chain altogether, A, B sprocket wheel are separately fixed on the crossbeam of frame, the C steering sprocket key is connected on the back shaft, and the D steering sprocket key is connected on the output shaft of reducer, is with the A driving-chain between A, B, C, the D sprocket wheel; Described balance sysmte comprises A crank assembly and B crank assembly, and wherein A crank assembly is connected with the output axle key of reducer, and B crank assembly key is connected on the supporting axis, and the balance weight rotating ratio of the balance weight of A crank assembly and B crank assembly is 1:2; Described exchange system comprises swivel pin assembly, cantilevered wheels assembly, crankwheel assembly and B driving-chain, and wherein the swivel pin assembly is connected the left end of the lower transverse beam of browpiece by bearing pin; The cantilevered wheels assembly is connected the right-hand member of the bracket head of browpiece by the baffle plate bolt; The crankwheel assembly is connected with A crank assembly bolt; An end of fixedly connected B driving-chain in the pin-and-hole of swivel pin assembly, the other end of B driving-chain pass E sprocket wheel on the cantilevered wheels assembly and the F sprocket wheel on the crankwheel assembly is connected with sucker rod.
Described browpiece comprises bracket head and upper and lower crossbeam, and wherein the welding of bracket head and top rail is fixing; Lower transverse beam is weldingly fixed on the upper end of casing by column; Weld inverted U-shaped cover on fixedly allotment beam and the inclined strut beam of welding also on the lower transverse beam, straight, inclined strut beam, top rail passes directly, the inverted U-shaped cover on the inclined strut beam.
Described brake system comprises brake assembly, spanner support and brake mount, and brake assembly and spanner support are separately fixed at the top and side of brake mount; Brake assembly wherein comprises that brake wheel, brake shoe, brake block, brake shoe axle, brake wheel shaft, brake rocker, brake draw pin and spring, and brake wheel is connected with the brake wheel axle key, and the swelling cover is set between the two; Brake shoe comprises left and right shoes, and left and right shoes links together by the brake shoe axle; Left side shoes upper pin connects brake rocker, is connected to brake between brake rocker and the right shoes and draws pin and spring; Described spanner support comprises supporting plate, control stick main body, control handle, arm-tie, extension spring and lock dog, and wherein supporting plate comprises A, B supporting plate, pillar and gusset, welds pillar between A, the B supporting plate, and A, B supporting plate weld gusset between the bottom; Wherein the control stick main body comprises handle and the control stick that welds with handle, is processed with circular hole and bar hole along the control stick center line, is lined with lining in the circular hole, and the control stick side is provided with the extension spring bolt; Control handle is connected with the control stick bearing pin, is connected with the arm-tie bolt, and the other end of arm-tie is connected in the bar hole of action bars by the lock dog bolt; One end of extension spring and arm-tie are fixed on the control stick jointly, and the other end is connected with the extension spring bolt; The control stick main body is fixedlyed connected by axle and spacer pin with supporting plate; Brake rocker is connected by drawhead and pull bar with the control stick main body.
Described swivel pin assembly comprises left and right sides two parts, and right half is provided with axle sleeve structure and is connected with the lower transverse beam left end bearing pin of browpiece, and left half is provided with pin-and-hole, and left and right sides two parts bolt connects.
Described cantilevered wheels assembly comprises E sprocket wheel, bearing, axle, spacer and A gland.
Described crankwheel assembly comprises F sprocket wheel, sprocket shaft bearing, sprocket shaft, tapered sleeve and B gland.
Described A crank assembly comprises A crank and A left and right sides balance weight, and A left and right sides balance weight symmetry bolt is connected the both sides of A crank, is processed with three circular ports on the center line of A crank, and A crank lower end is connected with the output axle key of reducer.
The invention has the beneficial effects as follows: because this flexibility transmission compound balanced pumping unit adopted technique scheme, rotate by the A crank and to drive flexible chain and move back and forth and replace linkage, reduced the iron and steel cement consumption, reduced the oil pumper volume; Adopt the B crankshaft balance weight to carry out secondary balancing, the fluctuation of output power of motor curve ratio conventional pumping unit output power curve diminished, and realized the power of motor permanent on the occasion of; Motor drops to about 7.5kw from the 22kw of beam pumping unit motor, has improved the efficient of pumping unit system greatly.This oil pumper operates steadily, simple in structure, reduced the energy transmission link, reduced power of motor, and realize the power of motor perseverance be on the occasion of, energy-efficient.
Description of drawings
Fig. 1 is the structural representation of flexible transmission compound balanced pumping unit of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of browpiece.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is A, B sprocket wheel fixed form structural representation.
Fig. 6 is the structural representation of brake assembly.
Fig. 7 is the structural representation of supporting plate.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is the structural representation of action bars.
Figure 10 is Fig. 9 vertical view.
Figure 11 is the structural representation of A crank assembly.
Figure 12 is the structural representation of swivel pin assembly.
Figure 13 is the vertical view of Figure 12.
Figure 14 is the structural representation of cantilevered wheels assembly.
Figure 15 is the structural representation of crankwheel assembly.
Figure 16 is the beam pumping unit power curve.
Figure 17 is the application's oil pumper power curve.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
In conjunction with shown in Figure 2, this flexibility transmission compound balanced pumping unit comprises gantry base system, power-transmission system, brake system, balance sysmte and exchange system by Fig. 1.
Described gantry base system comprises casing 1-1, frame 1-2, base 1-3 and browpiece 1-4; By Fig. 3 in conjunction with shown in Figure 4: browpiece 1-4, comprise bracket head 1-4-1 and upper and lower crossbeam, wherein bracket head 1-4-1 and top rail 1-4-2 welding is fixing; Lower transverse beam 1-4-3 is weldingly fixed on the upper end of casing 1-1 by column; Also weld fixedly allotment beam 1-4-4 and inclined strut beam 1-4-5 on the lower transverse beam 1-4-3, directly, the inverted U-shaped cover of welding on the inclined strut beam, top rail 1-4-2 passes directly, the inverted U-shaped cover on the inclined strut beam, this moment, top rail 1-4-2 can locate after the move left and right, the purpose that adopts this structure is in order to adjust the position of bracket head 1-4-1, conveniently to be connected with the well head sucker rod.
Described power-transmission system comprises magneto 2-1, reducer 2-2, back shaft 2-3 and sprocket chain strip transmission mechanism, and magneto 2-1 is connected by shaft coupling with reducer 2-2; The two ends of described back shaft 2-3 are provided with heavily loaded roller bearing and are horizontally fixed between the front and rear panel of casing 1-1; Described sprocket chain strip transmission mechanism comprises A, B, four sprocket wheels of C, D and A driving-chain altogether, A, B sprocket wheel are separately fixed on the crossbeam of frame 1-2, its fixed form is as shown in Figure 5: have two lateral apertures on the described crossbeam, two columns of both sides welding of two lateral apertures, bolt is separately fixed at A, B sprocket wheel in the lateral aperture by nut after passing column and sprocket shaft respectively, the back sprocket wheel is installed like this can be adjusted the relative position of A, B sprocket wheel along the lateral aperture move left and right; The C steering sprocket key is connected on the back shaft 2-3, and the D steering sprocket key is connected on the output shaft of reducer 2-2, is with the A driving-chain between A, B, C, the D sprocket wheel; The output shaft rotating band movable sprocket chain drive of reducer 2-2 rotates, and further drives back shaft 2-3 rotation.
Described brake system, by shown in Figure 6: comprise brake assembly 3-1, spanner support 3-2 and brake mount 3-3, brake assembly 3-1 and spanner support 3-2 are separately fixed at the top and side of brake mount 3-3; Brake assembly 3-1 wherein, comprise brake wheel 3-1-1, brake shoe 3-1-2, brake block 3-1-3, brake shoe axle 3-1-4, brake wheel shaft 3-1-5, brake rocker 3-1-6, brake and draw pin 3-1-7 and spring 3-1-8, brake wheel 3-1-1 is connected with brake wheel shaft 3-1-5 key, and the swelling cover is set between the two; Brake shoe 3-1-2 comprises left and right shoes, and left and right shoes links together by brake shoe axle 3-1-4; Left side shoes upper pin connects brake rocker 3-1-6, is connected to brake between brake rocker 3-1-6 and the right shoes and draws pin 3-1-7 and spring 3-1-8; Described spanner support 3-2 comprises supporting plate 3-2-1, control stick main body 3-2-2, control handle 3-2-3, arm-tie 3-2-4, extension spring 3-2-5 and lock dog 3-2-6; Supporting plate 3-2-1 wherein, in conjunction with Fig. 7 and shown in Figure 8: comprise A supporting plate 3-2-1-1, B supporting plate 3-2-1-2, pillar 3-2-1-3 and gusset 3-2-1-4, welding pillar 3-2-1-3 between A, the B supporting plate, welding gusset 3-2-1-4 between A, the B supporting plate bottom; Control stick main body 3-2-2 wherein, in conjunction with Fig. 9 and shown in Figure 10: comprise handle 3-2-2-1 and with the control stick 3-2-2-2 of handle welding, be processed with circular hole and bar hole along the control stick center line, be lined with lining in the circular hole, the control stick side is provided with the extension spring bolt; Control handle 3-2-3 is connected with the control stick bearing pin, is connected with arm-tie 3-2-4 bolt, and the other end of arm-tie 3-2-4 is connected in the bar hole of control stick by lock dog 3-2-6 bolt; The end of extension spring 3-2-5 and arm-tie 3-2-4 are fixed on the control stick jointly, and the other end is connected with the extension spring bolt; Control stick main body 3-2-2 is fixedlyed connected by joystick shaft 3-2-7 and spacer pin with supporting plate 3-2-1; Brake rocker 3-1-6 is connected by drawhead 3-4 and pull bar 3-5 with control stick main body 3-2-2; Brake wheel shaft 3-1-5 is fixedlyed connected with the motor power shaft.
Described balance sysmte, comprise A crank assembly 4-1, B crank assembly 4-2, A crank assembly 4-1 wherein, as shown in figure 11: comprise A crank 4-1-1 and A left and right sides balance weight 4-1-2, A left and right sides balance weight symmetry bolt is connected the both sides of crank 4-1-1, be processed with three circular port 4-1-3 on the center line of A crank, A crank lower end is connected with the output shaft of reducer; B crank assembly 4-2, identical substantially with the structure of A crank assembly, comprise B crank and B left and right sides balance weight, B left and right sides balance weight bolt is connected on the two sides of B crank, and B crank bottom is connected with bolster 2-3; The rotating ratio of balance weight is 1:2 on above-mentioned A crank assembly and the B crank assembly.
Described exchange system comprises swivel pin assembly 5-1, cantilevered wheels assembly 5-2, crankwheel assembly 5-3 and B driving-chain 5-4, and wherein swivel pin assembly 5-1 is connected the left end of the lower transverse beam 1-4-3 of browpiece by bearing pin; The structure of described swivel pin assembly such as Figure 12 and shown in Figure 13: comprise left and right sides two parts, right half is provided with axle sleeve structure and is connected with the bearing pin of browpiece lower transverse beam left end, and left half is provided with pin-and-hole, and left and right sides two parts bolt links together; The structure of described cantilevered wheels assembly 5-2 comprises E sprocket wheel 5-2-1, bearing 5-2-2, axle 5-2-3, spacer 5-2-4 and A gland 5-2-5 as shown in figure 14, and cantilevered wheels assembly 5-2 is connected the right-hand member of the bracket head 1-4-1 of browpiece by baffle plate 5-2-6 bolt; Crankwheel assembly 5-3, as shown in figure 15: comprise F sprocket wheel 5-3-1, spacer 5-2-4, sprocket shaft bearing 5-3-2, sprocket shaft 5-3-3, tapered sleeve 5-3-4 and B gland 5-3-5, crankwheel assembly 5-3 is connected with one of them circular port 4-1-3 bolt on the A crank 4-1-1, crankwheel assembly 5-3 and different circular port 4-1-3 connect, and can adjust the position of E sprocket wheel 5-3-1 as required; The end of fixedly connected B driving-chain 5-4 in the pin-and-hole of swivel pin assembly 5-1, the other end of B driving-chain 5-4 pass F sprocket wheel 5-2-1 on the crankwheel assembly 5-3 and the E sprocket wheel 5-3-1 on the cantilevered wheels assembly 5-2 is connected with sucker rod.
During this oil pumper work, motor rotates and drives the reducer rotation, and the reducer jackshaft drives bolster by the sprocket chain strip transmission mechanism and rotates, and further drives the B crankshaft balance weight and rotates; Another output shaft of reducer drives the A crankshaft balance weight and rotates, and the rotation of drive crankwheel assembly complete cycle further drives the B driving-chain and the sucker rod link moves up and down, thereby realizes that sucker rod moves back and forth, and reaches the purpose of oil recovery.
When tradition oil pumping machine oil pumping bar moves downward, big balance weight moves to a high position from low level, and kinetic energy is changed into potential energy, has reduced the shock loading that sucker rod produces motor, reducer to a certain extent, but motor is still done negative work, and the infringement of motor, reducer is still existed; The application's oil pumper, adopted the B balance weight to realize secondary balancing, the A balance weight changes half cycle, the B balance weight circles, by the A crank is staggered with 6 position and 12 positions with 6 of B crank at 12, make motor do positive work 12 perseverances of motor during with 6 position, and the maximum value of balance power output effectively in the half cycle that the A crank rotates, reduced the power output of motor, reduced the impact of load to reducer, motor, make the motor perseverance do positive work, improved the system effectiveness of whole oil pumper.
The beam pumping unit power curve as shown in figure 16, periodically there is negative value in power of motor; The application's oil pumper power curve as shown in figure 17, curve 5 expression A balance weight torque curves, curve 1 expression A balance weight load torque curve, curve 4 expression B balance weight torque curves, curve 2 expression B balance weight load torque curves, curve 3 expression plural equilibrium rear motor power curve, by curve 3 as can be seen, power of motor curve of the present invention is all more than zero line, eliminate motor and done the state of negative work (generating), and power of motor curve ratio of the present invention is more steady, has reduced power of motor consumption, and is energy-efficient.
Claims (7)
1. a flexible transmission compound balanced pumping unit comprises gantry base system, power-transmission system, brake system, balance sysmte and exchange system; Described gantry base system comprises casing, frame, base and browpiece, and wherein browpiece comprises bracket head and upper and lower crossbeam; Described brake system adopts the drum brakes structure, it is characterized in that: described power-transmission system, comprise magneto, reducer, back shaft and sprocket chain strip transmission mechanism, and the two ends of back shaft are provided with heavily loaded roller bearing and are fixed on the front and rear panel of casing; Wherein the sprocket chain strip transmission mechanism comprises A, B, four sprocket wheels of C, D and A driving-chain altogether, A, B sprocket wheel are separately fixed on the crossbeam of frame, the C steering sprocket key is connected on the back shaft, and the D steering sprocket key is connected on the output shaft of reducer, is with the A driving-chain between A, B, C, the D sprocket wheel; Described balance sysmte comprises A crank assembly and B crank assembly, and wherein A crank assembly is connected with the output axle key of reducer, and B crank assembly key is connected on the supporting axis, and the balance weight rotating ratio of the balance weight of A crank assembly and B crank assembly is 1:2; Described exchange system comprises swivel pin assembly, cantilevered wheels assembly, crankwheel assembly and B driving-chain, and wherein the swivel pin assembly is connected the left end of the lower transverse beam of browpiece by bearing pin; The cantilevered wheels assembly is connected the right-hand member of the bracket head of browpiece by the baffle plate bolt; The crankwheel assembly is connected with A crank assembly bolt; An end of fixedly connected B driving-chain in the pin-and-hole of swivel pin assembly, the other end of B driving-chain pass F sprocket wheel on the crankwheel assembly and the E sprocket wheel on the cantilevered wheels assembly is connected with sucker rod.
2. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: described browpiece, comprise bracket head and upper and lower crossbeam, wherein the welding of bracket head and top rail is fixing; Lower transverse beam is weldingly fixed on the upper end of casing by column; Weld inverted U-shaped cover on fixedly allotment beam and the inclined strut beam of welding also on the lower transverse beam, straight, inclined strut beam, top rail passes directly, the inverted U-shaped cover on the inclined strut beam.
3. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: described brake system, comprise brake assembly, spanner support and brake mount, brake assembly and spanner support are separately fixed at the top and side of brake mount; Brake assembly wherein comprises that brake wheel, brake shoe, brake block, brake shoe axle, brake wheel shaft, brake rocker, brake draw pin and spring, and brake wheel is connected with the brake wheel axle key, and the swelling cover is set between the two; Brake shoe comprises left and right shoes, and left and right shoes links together by the brake shoe axle; Left side shoes upper pin connects brake rocker, is connected to brake between brake rocker and the right shoes and draws pin and spring; Described spanner support comprises supporting plate, control stick main body, control handle, arm-tie, extension spring and lock dog, and wherein supporting plate comprises A, B supporting plate, pillar and gusset, welds pillar between A, the B supporting plate, and A, B supporting plate weld gusset between the bottom; Wherein the control stick main body comprises handle and the control stick that welds with handle, is processed with circular hole and bar hole along the control stick center line, is lined with lining in the circular hole, and the control stick side is provided with the extension spring bolt; Control handle is connected with the control stick bearing pin, is connected with the arm-tie bolt, and the other end of arm-tie is connected in the bar hole of action bars by the lock dog bolt; One end of extension spring and arm-tie are fixed on the control stick jointly, and the other end is connected with the extension spring bolt; The control stick main body is fixedlyed connected by axle and spacer pin with supporting plate; Brake rocker is connected by drawhead and pull bar with the control stick main body.
4. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: described A crank assembly, comprise A crank and A left and right sides balance weight, A left and right sides balance weight symmetry bolt is connected the both sides of A crank, be processed with three circular ports on the center line of A crank, A crank lower end is connected with the output axle key of reducer.
5. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: described swivel pin assembly, comprise left and right sides two parts, right half is provided with axle sleeve structure and is connected with the lower transverse beam left end bearing pin of browpiece, left half is provided with pin-and-hole, and left and right sides two parts bolt connects.
6. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: the cantilevered wheels assembly comprises E sprocket wheel, bearing, axle, spacer and A gland.
7. according to the described flexible transmission compound balanced pumping unit of claim 1, it is characterized in that: the crankwheel assembly comprises F sprocket wheel, sprocket shaft bearing, sprocket shaft, tapered sleeve and B gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110075028 CN102140905B (en) | 2011-03-28 | 2011-03-28 | Flexible-transmission composite balanced oil sucking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110075028 CN102140905B (en) | 2011-03-28 | 2011-03-28 | Flexible-transmission composite balanced oil sucking machine |
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| CN102140905A true CN102140905A (en) | 2011-08-03 |
| CN102140905B CN102140905B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110075028 Expired - Fee Related CN102140905B (en) | 2011-03-28 | 2011-03-28 | Flexible-transmission composite balanced oil sucking machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518767A (en) * | 2012-01-04 | 2012-06-27 | 中国石油天然气股份有限公司 | Two-stage balance variable-speed transmission for pumping unit |
| CN102587872A (en) * | 2012-03-29 | 2012-07-18 | 青岛北海石油装备技术有限公司 | Secondary balanced energy-saving double-stroke flexible pumping unit |
| CN103089923A (en) * | 2011-10-28 | 2013-05-08 | 东北石油大学 | Novel double balance reducer for pumping units |
| CN106869868A (en) * | 2017-03-29 | 2017-06-20 | 毛国武 | Both arms shake line makees well bar and moves back and forth energy-saving pumping unit |
| 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 |
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| CN86204321U (en) * | 1986-06-22 | 1988-02-24 | 刘维信 | Oil. pumping unit for flexible lifting system |
| US5018350A (en) * | 1990-05-09 | 1991-05-28 | Bender E A | Long stroke deep well pumping unit |
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| CN1793602A (en) * | 2006-01-04 | 2006-06-28 | 孙洪志 | Single crank double distance flexible type beam-pumping unit |
| CN101806201A (en) * | 2010-03-25 | 2010-08-18 | 徐荣恩 | Self balance energy storage oil extractor |
| CN101975046A (en) * | 2010-11-09 | 2011-02-16 | 西安石油大学 | Composite head sheave type chain drive pumping unit |
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| CN86204321U (en) * | 1986-06-22 | 1988-02-24 | 刘维信 | Oil. pumping unit for flexible lifting system |
| US5018350A (en) * | 1990-05-09 | 1991-05-28 | Bender E A | Long stroke deep well pumping unit |
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| CN101975046A (en) * | 2010-11-09 | 2011-02-16 | 西安石油大学 | Composite head sheave type chain drive pumping unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089923A (en) * | 2011-10-28 | 2013-05-08 | 东北石油大学 | Novel double balance reducer for pumping units |
| CN102518767A (en) * | 2012-01-04 | 2012-06-27 | 中国石油天然气股份有限公司 | Two-stage balance variable-speed transmission for pumping unit |
| CN102587872A (en) * | 2012-03-29 | 2012-07-18 | 青岛北海石油装备技术有限公司 | Secondary balanced energy-saving double-stroke flexible pumping unit |
| CN102587872B (en) * | 2012-03-29 | 2015-09-30 | 青岛北海石油装备技术有限公司 | A kind of secondary balanced energy-saving double-stroke flexible pumping unit |
| CN106869868A (en) * | 2017-03-29 | 2017-06-20 | 毛国武 | Both arms shake line makees well bar and moves back and forth energy-saving pumping unit |
| 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 |
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|---|---|
| CN102140905B (en) | 2013-04-24 |
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