CN106917606B - Spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit - Google Patents
Spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit Download PDFInfo
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- CN106917606B CN106917606B CN201710133508.2A CN201710133508A CN106917606B CN 106917606 B CN106917606 B CN 106917606B CN 201710133508 A CN201710133508 A CN 201710133508A CN 106917606 B CN106917606 B CN 106917606B
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- 238000005086 pumping Methods 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 title claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000612162 Maesa Species 0.000 description 1
- 241001595898 Monophlebidae Species 0.000 description 1
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/14—Counterbalancing
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Rehabilitation Tools (AREA)
- Transmission Devices (AREA)
Abstract
A kind of spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit, it includes base, two motor reducers, two cranks, two connecting rods, two girders, two auxiliary beams, two upright bars, upper belt-wheel, lower belt wheel, auxiliary bar, belt, the identical spring balancing weight bar group of two structures and sucker rod, wherein motor reducer and base are connected, its drive shaft and crank one end are keyed, connecting rod two end couples with the crank other end and girder one end, girder couples with base and auxiliary bar one end, couple in the middle part of auxiliary beam with base, its both ends couples with the auxiliary bar other end and lower belt wheel, upright bar both ends couple with the girder other end and upper belt-wheel, the coupling spindle of upper belt-wheel is slided in upper part of the frame vertical slideway；Belt one end is connect with sucker rod upper end, and the other end connect around upper and lower belt wheel with girder one end；Spring balancing weight bar group both ends couple with the rotation of upper and lower pulley shaft respectively.The present invention has many advantages, such as that reversing impact load is small, structure is simple, compact, the service life is long, energy saving.
Description
Technical field
The invention belongs to oil exploitation equipment technology field, in particular to a kind of long stroke pumping unit.
Background technique
In the case where deep-well is less than 1000m oil recovery operating condition, there is rod-type beam-pumping unit because its sucker rod commutation process is continuously without punching
It hits, the advantage that structure is simple, reliable, is widely used in the later period oil exploitation of countries in the world oil field always.It is adopted in deep-well greater than 2000m
Under oily operating condition, sucker rod elastic elongation amount is larger, needs to increase the stroke of sucker rod, can effectively mention pumping unit pump efficiency, reduces
Energy consumption.Directly increasing has rod-type beam-pumping unit rod stroke, will lead to its walking beam length and gross weight increases exponentially, so that system
It causes this and material, driving moment and occupied area to be all multiplied, and makes deterioration of safety.Therefore oil exploitation equipment technology
Brainstrust be continually striving to design and develop various long stroke pumping units always, it is intended to mention pump efficiency and the service life of pumping unit, energy conservation
Power saving.In this respect, the patent of invention of Publication No. CN100564794 in 2009 discloses lever balance head sheave long stroke oil pumping
Machine increases journey, single crank connecting rod and lever balanced structure using underlying driving balance wheel and realizes increasing journey.Publication No. in 2016
The utility model of CN205117304U discloses a kind of long stroke pumping unit, and big situation is missed for bailing oil pumping device.1987
The patent of invention of Publication No. CN1007997 discloses a kind of long-stroke pumping unit without walking beam, use chain-type travel prolongation mechanism with
Increase the stroke of pumping unit.The patent of invention of 2001 Publication No. CN1061739C discloses electric machine commutating long stroke beam unit motor
Commutation replaces mechanical commutation.The patent of invention of Publication No. CN102704897B in 2014 discloses a kind of hydraulic length of gravitational equilibrium
Stroke beam-pumping unit.The patent of invention of 1996 Publication No. CN1031354C discloses a kind of chain-type long stroke pumping unit, be after
Chain-type long stroke pumping unit of new generation after existing chain drive pumping unit.The invention of Publication No. CN1127622C in 2003 is special
Benefit discloses a kind of low-height pumping unit with cylindrical chain and long stroke, it has the function of polished rod by one, and has the function of conventional chain
Special cylinder chain, one is provided in space in the linear cylindrical type groove of approximate helical, interior table on regular polygon prismatic surface
Face is the special sprocket wheel of internal screw thread, one end with longer treasure maesa herb keyhole, the big plate-like wheel of a regular polygon, a deceleration system
It is formed with balance system.The patent of invention of Publication No. CN101082272B in 2010 discloses giant-scale tower type long stroke oil pumping
Machine enables pumping unit to develop to hugeization to adapt to the requirement that ultradeep well high-quality steam assisted gravity drainage recovers the oil.2014
The patent of invention of Publication No. CN102352740B discloses a kind of compound balanced long-stroke oil pumping machine, passes through combined balance
Structure mitigates the weight of balance weight.It is long that the patent of invention of Publication No. CN1015812 in 1992 discloses a kind of dual-belt dual-cylinder
Stroke beam-pumping unit is driven using dual-belt dual-cylinder, the rope group formula polished rod eye with pulley, adjustable overhead traveling crane, cross balancing formula safety
Device, planetary cam formula stroke regulating mechanism, the new constructions such as balance frame boom hoisting.The above-mentioned prior art is with their own characteristics, but
In commutation process, shock loading is still larger, and reliability is not good enough；Structure is not compact enough, and balance weight motion range is larger, safety
Property is not good enough.Such as the electrical commutation reliability in CN1061739C is not good enough.The long punching of lever balance head sheave formula in CN100564794
Journey pumping unit mechanical commutation device reversing impact power is larger.Chain-type travel prolongation mechanism is low with the service life of chain for increasing pumping unit.It
It is excessive to take turns speed change stroke increased oil pumping machine wheel, and is arranged in frame top, the belt winding service life is low, and structure is more complex.
Summary of the invention
The present invention is directed to propose a kind of reversing impact load is small, structure is simple, compact, the service life is long, the spring of energy saving
Accumulation of energy off-load and flexible wheel base stroke-increasing pumping unit.
The present invention includes base, two motor reducers, two cranks, two connecting rods, two girders, two auxiliary beams, two
A upright bar, upper belt-wheel, lower belt wheel, auxiliary bar, belt, the identical spring balancing of two structures weigh bar group and sucker rod, wherein base
The vertical plate and the bottom plate vertical with vertical plate being parallel to each other by two are solidly fixed, and two ipsilateral upper ends of vertical plate are equipped with vertically
The end of the long through-hole of bottom plate, vertical plate middle part, lower part and the other side is respectively equipped with three through-holes being parallel to each other, and vertical plate top is opened
There is tetragonal through hole；The radial center of upper and lower belt wheel and belt is located at the median plane of base, two motor reducers, two songs
Handle, two connecting rods, two girders, two auxiliary beams, two upright bars, two spring balancing weight bar groups are all symmetrical with respect to base median plane
Distribution.
Motor reducer is fixedly connected with the through-hole of the end of the above-mentioned base vertical plate other side, and the one of drive shaft and crank
End key connection, connecting rod two end couple with the rotation of one end of the other end of crank and girder respectively, the middle part of girder and base vertical plate
Middle through-hole rotate connection, one end of the middle and lower part of girder and auxiliary bar, which rotates, to be coupled, one end of the other end of auxiliary bar and auxiliary beam
The middle part of rotation connection, auxiliary beam couples with the rotation of the through-hole of base vertical plate lower part, and the other end and lower belt wheel the axis rotation of auxiliary beam join
It connects, upright bar both ends couple with the other end of girder and upper belt-wheel rotation respectively, and the coupling spindle of upper belt-wheel is long logical in the upper end of base
It is slided in hole, belt one end is connect with sucker rod upper end, and the other end connect around upper and lower belt wheel with the above-mentioned girder other end.
Spring balancing weight bar group includes upper bracket, connecting plate, balance weight, two guide rods, four springs, two nuts；Wherein
Upper bracket is equipped with horizontal through hole and two symmetrical vertical through hole, and connecting plate is equipped with corresponding with upper bracket vertical through hole logical
Hole, balance weight are equipped with horizontal through hole and through-hole corresponding with upper bracket vertical through hole；One end of guide rod is equipped with cylinder boss, another
One end is equipped with cylindrical thread；Two guide rods successively slide through respectively upper bracket, connecting plate, balance weight two vertical through hole, lead
The cylindrical thread end of bar and nut are affixed；On two guide rods, two of them both ends of the spring is against four equal cloth sets of spring respectively
Below upper bracket and connecting plate above, another two both ends of the spring be against below connecting plate respectively and balance weight above, the level of upper bracket
Through-hole couples with the rotation of the axis of upper belt-wheel, and the horizontal through hole of balance weight couples with the rotation of the axis of lower belt wheel.
When work, motor reducer drives girder to swing by crank and connecting rod, and girder drives auxiliary beam opposite by auxiliary bar
Girder is inversely swung, girder further through upright bar drive upper belt-wheel along base vertical slideway slide, while auxiliary sill bolt move upper belt-wheel and
Balance weight changes the wheelspan of upper and lower belt wheel with respect to upper belt-wheel counter motion, realizes and increases rod stroke.Sucker rod undershoot
The wheelspan of Cheng Shi, upper and lower belt wheel reduce, the groups of springs compression accumulation of energy of spring balancing weight bar group, under motor driven function and sucker rod
Drop function is converted into the potential energy of compression spring.When sucker rod upstroke, the wheelspan of upper and lower belt wheel increases, spring balancing weight bar group
Spring elongation releases energy, and compression spring group helps motor reducer to promote sucker rod.Since spring bears larger precompressed always
Power offsets a part of belt to the active force of upper and lower pulley shaft, to reduce the driving of the load and needs that act on kinematic pair
Torque.By adjusting guide rod and nut relative distance, suitable pre-pressure of the spring can be obtained, reaches and reduces driving moment and fortune
Dynamic pair load purpose.
The invention has the following advantages over the prior art:
1, function is vertically moved up or down using upper belt-wheel simultaneously and the big displacement function of upper and lower belt wheel effectively increases sucker rod and rushes
Journey, rod stroke can be made, which to reach conventional, four times of bar beam-pumping unit or more；
2, using the pressing spring accumulation of energy function and balance weight of spring lever group effectively reduce motor reducer driving moment and
Act on the load of kinematic pair；
3, for sucker rod commutation process continuously without impact, maintaining routine has rod-type beam-pumping unit commutation process continuously without punching
The advantages of hitting；
4, steel wire belt winds upper and lower belt wheel in the same direction, and winding number has twice again, and resistance is small, the service life is long；
5, simple and compact for structure, length to height ratio is small, and movement is steady, and good reliability, manufacturing cost is low, and occupied area is less than conventional
There is rod-type beam-pumping unit.
Detailed description of the invention
Fig. 1 is simplified schematic diagram of the invention.
In figure: 1- base, 2- motor reducer, 3- crank, 4- connecting rod, the auxiliary bar of 5-, 6- girder, the auxiliary beam of 7-, 8- lower belt wheel,
9-1- guide rod, 9-2- upper bracket, 9-3- spring, 9-4- win in succession, 9-5- balance weight, 9-6- nut, 10- belt, 11- upper belt-wheel,
12- upright bar, 13- sucker rod.
Specific embodiment
In spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit schematic diagram shown in Fig. 1, base 1 is mutually flat by two
Capable vertical plate and the bottom plate vertical with vertical plate are integrally welded, and the length that two ipsilateral upper ends of vertical plate are equipped with vertical base plate is logical
Hole, the end at vertical plate middle part, lower part and the other side are respectively equipped with three through-holes being parallel to each other, and it is logical that vertical plate top is provided with quadrangle
Hole；Upper belt-wheel 11 and lower belt wheel 8 and the radial center of belt 10 are located at the median plane of base, two motor reducers, two songs
Handle, two connecting rods, two girders, two auxiliary beams, two upright bars, two spring balancing weight bar groups are all symmetrical with respect to base median plane
Distribution.
Motor reducer 2 is fixedly connected with the through-hole of the end of the above-mentioned base vertical plate other side, drive shaft and crank 3
One end key connection, the both ends of connecting rod 4 couple with the rotation of one end of the other end of crank and girder 6 respectively, the middle part of girder and machine
The middle through-hole of seat vertical plate rotates connection, and the middle and lower part of girder couples with the rotation of one end of auxiliary bar 5, the other end of auxiliary bar and auxiliary beam
7 one end rotates connection, and the middle part of auxiliary beam couples with the rotation of the through-hole of base vertical plate lower part, the other end and lower belt wheel axis of auxiliary beam
Rotation connection, 12 both ends of upright bar couple with the other end of girder and upper belt-wheel rotation respectively, and the coupling spindle of upper belt-wheel is in base
Sliding, belt one end are connect with the upper end of sucker rod 13 in the long through-hole of upper end, and the other end is another around upper and lower belt wheel and above-mentioned girder
One end connection.
Upper bracket 9-2 in spring balancing weight bar group is equipped with horizontal through hole and two symmetrical vertical through hole, connecting plate
9-4 is equipped with through-hole corresponding with upper bracket vertical through hole, and balance weight 9-5 is equipped with horizontal through hole and corresponding with upper bracket vertical through hole
Through-hole；One end of guide rod 9-1 is equipped with cylinder boss, and the other end is equipped with cylindrical thread；Two guide rods respectively successively wear by sliding
Cross upper bracket, connecting plate, balance weight two vertical through hole, the cylindrical thread end of guide rod and nut 9-6 are affixed；Four spring 9-3
Equal cloth set on two guide rods, two of them both ends of the spring be against below upper bracket respectively and connecting plate above, another two spring two
End is against below connecting plate respectively with above balance weight, and the horizontal through hole of upper bracket couples with the rotation of the axis of upper belt-wheel, balance weight
Horizontal through hole couples with the rotation of the axis of lower belt wheel.
Claims (1)
1. a kind of spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit comprising base, two motor reducers, two songs
Handle, two connecting rods, two girders, two auxiliary beams, two upright bars, upper belt-wheel, lower belt wheel, auxiliary bar, belt, two structures are identical
Spring balancing weight bar group and sucker rod, it is characterised in that: the base is by two vertical plates being parallel to each other and vertical with vertical plate
Bottom plate is solidly fixed, and the upper left side of two vertical plates is equipped with the long through-hole of vertical base plate, middle part, lower part and the right side of two vertical plates
Downside is respectively equipped with three through-holes being parallel to each other, and the top of two vertical plates is provided with tetragonal through hole；Upper and lower belt wheel and belt position
Between two vertical plates, two motor reducers, two cranks, two connecting rods, two girders, two auxiliary beams, two upright bars, two
A spring balancing weight bar group is all symmetrical with respect to base median plane；
The motor reducer is fixedly connected with the through-hole of above-mentioned base vertical plate lower right side, and one end key of drive shaft and crank connects
It connects, connecting rod two end couples with the rotation of one end of the other end of crank and girder respectively, the middle part of girder and the middle part of base vertical plate
Through-hole rotation connection, the middle and lower part of girder couple with the rotation of one end of auxiliary bar, and one end of the other end of auxiliary bar and auxiliary beam, which rotates, to be joined
It connects, the middle part of auxiliary beam couples with the rotation of the through-hole of base vertical plate lower part, and the other end of auxiliary beam couples with the rotation of lower belt wheel axis, upright bar
Both ends couple with the other end of girder and upper belt-wheel rotation respectively, and the coupling spindle of upper belt-wheel is sliding in the upper end long through-hole of base
Dynamic, belt one end is connect with sucker rod upper end, and the other end connect around upper and lower belt wheel with the above-mentioned girder other end；
The spring balancing weight bar group includes upper bracket, connecting plate, balance weight, two guide rods, four springs, two nuts；It is described
Upper bracket is equipped with horizontal through hole and two symmetrical vertical through hole, and the connecting plate is equipped with corresponding with upper bracket vertical through hole
Through-hole, the balance weight are equipped with horizontal through hole and through-hole corresponding with upper bracket vertical through hole；The guide rod is equipped with cylinder
Boss, the other end are equipped with cylindrical thread；Two guide rods successively slide through respectively upper bracket, connecting plate, two of balance weight it is vertical
Through-hole, the cylindrical thread end of guide rod and nut are affixed；Four equal cloth sets of spring are on two guide rods, two of them upper spring both ends
Be against below upper bracket respectively and connecting plate above, under another two both ends of the spring be against below connecting plate respectively and balance weight above, on
The horizontal through hole of support couples with the rotation of the axis of upper belt-wheel, and the horizontal through hole of balance weight couples with the rotation of the axis of lower belt wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133508.2A CN106917606B (en) | 2017-03-08 | 2017-03-08 | Spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710133508.2A CN106917606B (en) | 2017-03-08 | 2017-03-08 | Spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106917606A CN106917606A (en) | 2017-07-04 |
| CN106917606B true CN106917606B (en) | 2018-12-07 |
Family
ID=59461699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710133508.2A Active CN106917606B (en) | 2017-03-08 | 2017-03-08 | Spring energy-storage off-load and flexible wheel base stroke-increasing pumping unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106917606B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854211B (en) * | 2019-03-20 | 2020-04-28 | 燕山大学 | Double-sector gear beam stroke-increasing oil pumping unit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1731988A1 (en) * | 1989-11-30 | 1992-05-07 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Нефтяного Машиностроения | Drive of well rod pump |
| SU1740777A1 (en) * | 1990-01-10 | 1992-06-15 | Азербайджанский Институт Нефти И Химии Им.М.Азизбекова | Sucker-rod well pump drive |
| CN1071484A (en) * | 1991-10-07 | 1993-04-28 | 北京市西城区新开通用试验厂 | A kind of long-stroke beam-pumping unit |
| CN2104293U (en) * | 1991-10-24 | 1992-05-13 | 孙明道 | Sprocket group type hydraulic pumping unit |
| CN101178004A (en) * | 2007-11-08 | 2008-05-14 | 张玉龙 | Straight rotary pumping unit |
| RU2406874C1 (en) * | 2009-05-18 | 2010-12-20 | Государственное образовательное учреждение высшего профессионального образования "Северо-Кавказский государственный технический университет" | Pumping unit |
| CN202300340U (en) * | 2012-01-09 | 2012-07-04 | 孙显清 | Timely and automatic adjustment device for dynamic balance of oil pumping unit |
-
2017
- 2017-03-08 CN CN201710133508.2A patent/CN106917606B/en active Active
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| CN106917606A (en) | 2017-07-04 |
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Effective date of registration: 20220804 Address after: 163000 Shengli second village, Saertu District, Daqing City, Heilongjiang Province Patentee after: DAQING JIAYU MACHINERY MANUFACTURING Co.,Ltd. Address before: 066004 No. 438 west section of Hebei Avenue, seaport District, Hebei, Qinhuangdao Patentee before: Yanshan University |
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