CN106089663B - Continuous two-way lifting oil pump - Google Patents
Continuous two-way lifting oil pump Download PDFInfo
- Publication number
- CN106089663B CN106089663B CN201610671913.5A CN201610671913A CN106089663B CN 106089663 B CN106089663 B CN 106089663B CN 201610671913 A CN201610671913 A CN 201610671913A CN 106089663 B CN106089663 B CN 106089663B
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- Prior art keywords
- valve
- space
- inner chamber
- pump body
- continuous
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 239000003129 oil well Substances 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 6
- 210000002421 cell wall Anatomy 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention discloses a kind of continuous two-way lifting oil pump, it is characterised in that including inner chamber and exocoel, makes inner space of the oil well pump formation positioned at inner chamber and the jacket space between inner chamber and exocoel；Inner cavity top is sealed provided with top, and interior intracavitary is provided with is divided into upper space and the piston of lower space by inner space, and sucker rod is connected through top sealing with piston；Inner chamber and the bottom of exocoel are provided with end cap, end cap is provided with the lower pump body inlet valve for leading to lower space, provided with the lower pump body delivery valve for leading to jacket space below intracavity sidewall, provided with the upper pump casing delivery valve for leading to jacket space above intracavity sidewall, provided with the upper pump casing inlet valve for leading to upper space above outer chamber side wall；Lower pump body inlet valve, lower pump body delivery valve, upper pump casing delivery valve, upper pump casing inlet valve are check valve.The achievable upstroke of the present invention improves operating efficiency with being pumped in down stroke.
Description
Technical field
The present invention relates to petroleum machinery production technique field, more particularly to a kind of oil well pump of oil extraction in oil field.
Background technology
Oil well pump is applied to petroleum industry, is a kind of plant equipment that oil is given rise to ground by underground, it accounts for exchange
More than the 90% of tool oil recovery.The reciprocal oil extraction pump of mechanical conventional plunger that oil field is used at present, can only pass through oil pumping in ground machine
The mechanisms such as bar realize oil pumping, but oil pumping up-down stroke for intermittence unidirectionally lift it is fuel-displaced, it is impossible to realize piston reciprocating run
Shi Lianxu liftings are fuel-displaced, and the efficiency of ground machine and underground oil well pump is less than 50%, causes energy waste.
The content of the invention
The technical problem to be solved in the present invention be provide it is a kind of can be pumped in upstroke and down stroke it is continuous
Two-way lifting oil pump, improves operating efficiency.
To solve the above problems, the continuous two-way lifting oil pump of the present invention includes inner chamber and exocoel, form oil well pump
Jacket space positioned at the inner space of inner chamber and between inner chamber and exocoel；Inner cavity top is sealed provided with top, inner chamber
Inner space is divided into upper space and the piston of lower space by interior be provided with, and sucker rod is connected through top sealing with piston；It is interior
The bottom of chamber and exocoel is provided with end cap, and end cap is provided with below the lower pump body inlet valve for leading to lower space, intracavity sidewall provided with logical
To the lower pump body delivery valve of jacket space, provided with the upper pump casing delivery valve for leading to jacket space, outer chamber side wall above intracavity sidewall
Top is provided with the upper pump casing inlet valve for leading to upper space；Lower pump body inlet valve, lower pump body delivery valve, upper pump casing delivery valve, on
Pump housing inlet valve is check valve.
Preferably, it is interior in above-mentioned continuous two-way lifting oil pump to be connected between cavity outer wall and outer cavity wall with web plate.
Preferably, interior cavity wall is in place in upper pump casing delivery valve and upper pump casing oil-feed in above-mentioned continuous two-way lifting oil pump
The lower section of valve is provided with upper pump casing travel control device；Interior cavity wall is in place in the top of lower pump body delivery valve, lower pump body inlet valve
Provided with lower pump body travel control device；Upper pump casing travel control device, lower pump body travel control device are with driving the dynamic of sucker rod
Power equipment is connected.
Preferably, lower pump body inlet valve includes multiple valves in above-mentioned continuous two-way lifting oil pump, and valve bottom passes through
Hinge is articulated with the inwall of inner chamber, multiple valve closeds coning, end cap conical lower section position hollow out, valve it
Between and valve and inner chamber between seal.
Preferably, have in above-mentioned continuous two-way lifting oil pump around valve in major arc connected in star, groove provided with inside
Hollow sealing strip.
Preferably, the inwall bottom of inner chamber is provided with turbulator in above-mentioned continuous two-way lifting oil pump, makes top-down
Oil is converted into transverse direction and/or screw after being contacted with turbulator.
Preferably, projected position when turbulator is located at valve opening in above-mentioned continuous two-way lifting oil pump on inner chamber
Place.
Preferably, in above-mentioned continuous two-way lifting oil pump the making material and parts by weight of sucker rod be 3~5 parts of Al,
2~6 parts of Cr, 0.5 part of Zn, 7~10 parts of Mg, 1.8~2.3 parts of Cu, 3~6 parts of Ni, 7~9 parts of Zr, 12~15 parts of Ti.
The continuous two-way lifting oil pump of the present invention is in upstroke, and lower pump body inlet valve is opened, and outside is oily from lower pump
Body inlet valve enters the lower space of inner chamber, and the oil of upper space enters jacket space, jacket space by upper pump casing delivery valve
Middle oil mass increases, and is discharged by oil pipe；During down stroke, lower pump body inlet valve is closed, and outside oil is entered by upper pump casing inlet valve
Enter the upper space of inner chamber, the oil of lower space enters oil mass in jacket space, jacket space by lower pump body delivery valve to be increased,
Discharged by oil pipe, realize continuous two-way lifting.Empirical tests, continuous two-way lifting oil pump hoisting power of the invention is strong, its
Installation site in the duct can be higher than pasta, still can effectively be worked in the height higher than earth's surface.
Brief description of the drawings
Fig. 1 is the schematic diagram of the continuous two-way lifting oil pump of first embodiment of the invention.
Fig. 2 is the schematic diagram of the lower pump body inlet valve of continuous two-way lifting oil pump in fourth embodiment of the invention.
Embodiment
The embodiment of the present invention is described in detail below with reference to accompanying drawing.
As shown in figure 1, the first embodiment of the continuous two-way lifting oil pump of the present invention includes inner chamber 1 and exocoel 2, inner chamber is set
In outer chamber, make the jacket space A2 between the inner space A1 and inner chamber and exocoel of oil well pump formation inner chamber 1, exocoel 2
Top is connected with oil pipe；
Inner cavity top is sealed provided with top, is provided with piston 4 in inner chamber 1, piston 4 by inner space A1 points for upper space and
Lower space two parts, sucker rod 9 is connected through top sealing with piston 4, is sealed between sucker rod 9 and top sealing；
Inner chamber and the bottom of exocoel are provided with end cap 3, and the position that end cap 3 is located at intracavity bottom is provided with lower pump body inlet valve 5, i.e.,
End cap 3 is provided with the lower pump body inlet valve 5 for the lower space for leading to inner chamber, oil is entered interior from outside by lower pump body inlet valve 5
The lower space of chamber；
End cap is provided with the annular groove for accommodating internal chamber wall and outer chamber wall, and annular groove is interior to be provided with sealing gasket, the sinking of sealing gasket
Portion enters annular groove, and the top of sealing gasket is provided with bound edge to wrap up on the outside of the cell wall of annular groove, cell wall provided with section into endways
Trapezoidal dovetail groove, bound edge is provided with corresponding trapezoidal projection, trapezoidal raised embedded dovetail groove；The groove of both sides at annular groove bottom land
Wall is respectively equipped with right angled triangle projection, and the raised space between bottom land of right angled triangle is formed under isosceles trapezoid, sealing gasket
The bottom in heavy portion is provided with trapezoidal installation portion, trapezoidal installation portion insertion isosceles trapezoid；Annular groove inwall be provided with around annular groove and
The locating slot of section camber, the side in sealing gasket sinking portion is provided with corresponding arc convex, and arc convex is highly higher than positioning
In groove depth, arc convex insertion locating slot；Sealing gasket and inner chamber are made by trapezoidal raised, trapezoidal installation portion, arc convex, it is outer
The sealing that is connected firmly between the side wall of chamber, is prevented because the reason such as rotation causes generation dislocation generation gap etc. to be drawn in assembling process
Play leakage；And arc convex is highly higher than clamping slot depth, makes arc convex formation sealing hoop, strengthen sealing effectiveness；
Provided with the lower pump body delivery valve 6 for leading to jacket space A2 below the side wall of inner chamber 1, make oil can be from the lower space of inner chamber
Into jacket space；Provided with the upper pump casing delivery valve 7 for leading to jacket space A2 above the side wall of inner chamber 1, make oil can be from the upper of inner chamber
Portion space enters jacket space；Provided with the upper pump casing inlet valve 8 for leading to the top of inner chamber 1 above the side wall of exocoel 2, make oil can be from oil pumping
The upper space of inner chamber is directly entered outside pump；
Lower pump body inlet valve 5, lower pump body delivery valve 6, upper pump casing delivery valve 7, upper pump casing inlet valve 8 are check valve.
It is put into well, is wrapped outside exocoel by oil after the exocoel of continuous two-way lifting oil pump is connected with oil pipe when using
Enclose.When upstroke is that piston 4 is moved upwards, lower pump body inlet valve 5 is opened, and outside oil enters inner chamber 1 from lower pump body inlet valve 5
Lower space, the oil of upper space enters jacket space A2 by upper pump casing delivery valve 7, and oil mass increases in jacket space A2,
Discharged by oil pipe；
When down stroke is that piston 4 is moved downward, lower pump body inlet valve 5 is closed, and outside oil is entered by upper pump casing inlet valve 8
Enter the upper space of inner chamber, the oil of lower space enters oil mass in jacket space A2, jacket space A2 by lower pump body delivery valve 6
Increase, discharged by oil pipe.Upper piston area has oil with bottom in upstroke or down stroke, and pressure difference is small, the reliability of oil well pump
It is high.
Reciprocal stroke of the present embodiment can complete the process of strike the oil twice and oil extraction, be carried relative to conventional reciprocal oil extraction pump
High oil production.
In the second embodiment of the present invention, connected between intracavity sidewall and outer cavity wall with web plate, enhancing inner chamber and exocoel
Between steadiness, and mesh on web plate does not influence the flowing of oil.
In the third embodiment of the present invention, interior cavity wall is set below upper pump casing delivery valve and upper pump casing inlet valve in place
There is upper pump casing travel control device, interior cavity wall is in place to be provided with lower pump body in the top of lower pump body delivery valve, lower pump body inlet valve
Travel control device, travel control device is with driving the power-equipment of sucker rod to be connected, when piston is contacted with travel control device
Power-equipment conversion stroke is just forced afterwards, prevents piston continues to move from being collided damage fuel tap with fuel tap.Row in the present embodiment
Process control device uses travel switch.
In the fourth embodiment of the present invention, as shown in Fig. 2 lower pump body inlet valve 5 includes three valves 51, the bottom of valve 51
Portion is articulated with the inwall of inner chamber 1 by hinge 52, and three valves 51 form cone after closing, and end cap 3 is in conical lower section
Sealed between position hollow out, valve 51 and between valve 51 and inner chamber 1, valve is provided with ribs in both sides about 51, to prevent
Valve is deformed in the presence of oil pressure.During upstroke, rotated in the around hinge 52 of impact lower valve 51 of oil, three valves 51 are formed
Cone opening, oil by lower pump body inlet valve 5 enter inner chamber 1 inside；During down stroke, in oily impact lower valve 51 around hinge
The opposite direction of chain 52 rotates, and the cone closing of three formation of valve 51, oil can not pass through from lower pump body inlet valve 5.Valve quantity
It can be set to as needed multiple.Lower pump body inlet valve 5 uses this structure, fuel feed hole is become big, oil inlet quantity increase, raising
The operating efficiency of oil well pump.Hinge 52 is provided with stopping means, and the rotating range of valve 51 is limited, enables pump housing inlet valve 5
Quickly open and close.
Wherein, there are the sealing strip that boring is provided with major arc connected in star, groove, such sealing strip around valve 51
Be that elasticity is stronger during the contact of other objects, can effective compensation space that may be present, it is excellent therefore, it is possible to increase sealing effectiveness
Sealing strip can be firmly secured in groove by arc groove, and sealing strip drops when preventing from being used for multiple times.
The inwall bottom of inner chamber 1 is provided with turbulator 53, and the position of turbulator 53 maintains an equal level or less than valve with valve 51, made from upper
And under oil contact with turbulator after be converted into transverse direction and/or screw, laterally oil stream impacts valve 51,51 pairs of valve of enhancing
The response speed of descending oil stream, the time required to lower pump body inlet valve 5 is closed when shortening down stroke, reduces the outflow of oil, improves work
Make efficiency；Meanwhile, with screw under oil flow direction, extension oil stream closes lower pump body inlet valve 5 in the run duration of intracavity bottom
The oil mass of outflow is further reduced before closing, and further improves operating efficiency.The concrete structure of turbulator 53 is unrestricted, meets above-mentioned
Turbulator 53 is protruded in the inwall of inner chamber 1 and spiraled from top to bottom in a spiral manner in function, the present embodiment, and turbulator 53 is pushed up
Face is vertical with the inwall of inner chamber, the interior walls be smooth transition of the bottom surface of turbulator 53 and inner chamber, occurs when oil is flowed from top to bottom disorderly
Stream, is reduced when oil flows from bottom to top by being influenceed.Turbulator 53 can only be located at projection when valve 51 is opened on inner chamber
At position, and turbulator is not provided with the space of the projected position of two valves, the influence for so making turbulator up to oil stream subtracts
It is small；Turbulator can also support valve, prevent the inwall that valve fits to inner chamber from leading to not close.
In the fifth embodiment of the present invention, the end cap of exocoel 2 is provided with relief valve, and relief valve is located under jacket space
Side.When internal pressure is excessive, relief valve is opened, and is closed automatically after pressure release, it is ensured that the security of oil well pump.Relief valve is located at
Oil-well pump bottom, collides with pipeline when preventing from oil well pump being installed in oil well and causes to damage.
In the sixth embodiment of the present invention, piston-top surface is provided with pressure sensor, and sucker rod is hollow to accommodate pressure sensing
The circuit of device, pressure sensor is connected the working condition for monitoring oil well pump at the moment with monitoring device.
In the seventh embodiment of the present invention, outer chamber side wall is provided with the hydraulically extensible bar connected with jacket space, hydraulically extensible
Bar utilizes the oil pressure extension of jacket space.Hydraulically extensible bar is in contraction state when installing oil well pump, in oil after oil well pump is in place
The lower hydraulically extensible bar elongate support of pressure effect prevents oil pump from being shaken in the process of running in the presence of sucker rod in oil country tubular good
It is dynamic, cause because deformation or abrasion cause the lost of life.
The continuous two-way lifting oil pump of the present invention is continuously run, and upstroke is delivered up oil with down stroke, causes to take out
Oil pump bears elevated pressures always, and sucker rod can deform in long-term work, therefore very high to the material proposition of sucker rod
It is required that, sucker rod is made using a kind of alloy in the eighth embodiment of the present invention, the making material and parts by weight of the alloy
Respectively：3~5 parts of Al, 2~6 parts of Cr, 0.5 part of Zn, 7~10 parts of Mg, 1.8~2.3 parts of Cu, 3~6 parts of Ni, Zr 7~
9 parts, 12~15 parts of Ti.It is high with the strength of oil pump rod that the alloy is made, it is unlikely to deform.
The preferred embodiments of the disclosure and embodiment are explained in detail above in conjunction with accompanying drawing, but it is of the invention
The above-described embodiment and examples are not limited to, in the knowledge that those skilled in the art possess, can also not taken off
Various changes can be made on the premise of from present inventive concept.
Claims (9)
1. a kind of continuous two-way lifting oil pump, it is characterised in that including inner chamber and exocoel, makes oil well pump formation positioned at inner chamber
Inner space and the jacket space between inner chamber and exocoel；
Inner cavity top is sealed provided with top, and interior intracavitary is taken out provided with inner space is divided into upper space and the piston of lower space
Beam hanger is connected through top sealing with piston；
Inner chamber and the bottom of exocoel are provided with end cap, and end cap is provided with below the lower pump body inlet valve for leading to lower space, intracavity sidewall
Provided with the lower pump body delivery valve for leading to jacket space, provided with the upper pump casing delivery valve for leading to jacket space above intracavity sidewall, outside
Provided with the upper pump casing inlet valve for leading to upper space above the wall of chamber side；
Lower pump body inlet valve, lower pump body delivery valve, upper pump casing delivery valve, upper pump casing inlet valve are check valve；
Wherein, end cap is provided with the annular groove for accommodating internal chamber wall and outer chamber wall, and annular groove is interior to be provided with sealing gasket, the sinking of sealing gasket
Portion enters annular groove；
The top of sealing gasket provided with bound edge to wrap up the cell wall of annular groove, provided with section into endways trapezoidal trapezoidal on the outside of cell wall
Groove, bound edge is provided with corresponding trapezoidal projection, trapezoidal raised embedded dovetail groove；
The cell wall of both sides is respectively equipped with right angled triangle projection, the raised sky between bottom land of right angled triangle at annular groove bottom land
Between form isosceles trapezoid, the bottom in sealing gasket sinking portion is provided with trapezoidal installation portion, trapezoidal installation portion insertion isosceles trapezoid；
Annular groove inwall is provided with the locating slot around annular groove and section camber, and the side in sealing gasket sinking portion is provided with corresponding
Arc convex, arc convex is highly higher than in clamping slot depth, arc convex insertion locating slot.
2. continuous two-way lifting oil pump according to claim 1, it is characterised in that：
Connected between interior cavity outer wall and outer cavity wall with web plate.
3. continuous two-way lifting oil pump according to claim 1, it is characterised in that：
Interior cavity wall is in place to be provided with upper pump casing travel control device in the lower section of upper pump casing delivery valve and upper pump casing inlet valve；
Interior cavity wall is in place to be provided with lower pump body travel control device in the top of lower pump body delivery valve, lower pump body inlet valve；
Upper pump casing travel control device, lower pump body travel control device are with driving the power-equipment of sucker rod to be connected.
4. continuous two-way lifting oil pump according to claim 1, it is characterised in that：
End cap is provided with the relief valve being located at below jacket space.
5. continuous two-way lifting oil pump according to claim 1, it is characterised in that：
Lower pump body inlet valve includes multiple valves, and valve bottom is articulated with the inwall of inner chamber, multiple valve closeds by hinge
Coning, end cap is sealed between valve and valve and inner chamber in the position hollow out of conical lower section.
6. continuous two-way lifting oil pump according to claim 5, it is characterised in that：
There is the sealing strip that boring is provided with major arc connected in star, groove around valve.
7. continuous two-way lifting oil pump according to claim 5, it is characterised in that：
The inwall bottom of inner chamber is provided with turbulator, top-down oil is converted into transverse direction and/or spiral after being contacted with turbulator
Motion.
8. continuous two-way lifting oil pump according to claim 7, it is characterised in that：
When turbulator is located at valve opening at projected position on inner chamber.
9. the continuous two-way lifting oil pump according to any of the above claim, it is characterised in that the making material of sucker rod
With parts by weight be 3~5 parts of Al, 2~6 parts of Cr, 0.5 part of Zn, 7~10 parts of Mg, 1.8~2.3 parts of Cu, 3~6 parts of Ni,
7~9 parts of Zr, 12~15 parts of Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671913.5A CN106089663B (en) | 2016-08-15 | 2016-08-15 | Continuous two-way lifting oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610671913.5A CN106089663B (en) | 2016-08-15 | 2016-08-15 | Continuous two-way lifting oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089663A CN106089663A (en) | 2016-11-09 |
| CN106089663B true CN106089663B (en) | 2017-08-22 |
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ID=58069270
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610671913.5A Active CN106089663B (en) | 2016-08-15 | 2016-08-15 | Continuous two-way lifting oil pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN106089663B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287714B (en) * | 2018-12-10 | 2023-12-01 | 中国石油化工股份有限公司 | Lifting device and method for well fluid |
| CN109999229A (en) * | 2019-03-14 | 2019-07-12 | 美昕医疗器械（上海）有限公司 | A kind of waste collecting device and waste gathering processing system |
| CN114482933B (en) * | 2022-01-27 | 2024-03-08 | 广东海洋大学 | Three-pipe oil pumping device capable of separating sand and stone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH243664A (en) * | 1941-04-03 | 1946-07-31 | Olaer Marine Soc | Method and apparatus for pumping. |
| US2793596A (en) * | 1953-09-04 | 1957-05-28 | Wilma K Lucas | Pump valve |
| CN2030264U (en) * | 1988-06-25 | 1989-01-04 | 李思华 | Convenient water draw-off pump |
| CN2288292Y (en) * | 1996-08-05 | 1998-08-19 | 华旭 | Full-closed piston-type double-action reciprocating pump |
| CN2477822Y (en) * | 2001-04-16 | 2002-02-20 | 邓志安 | Well sucker-rod pump oil extracting machine |
| CN206035775U (en) * | 2016-08-15 | 2017-03-22 | 孙旭 | Continuous two -way oil -well pump that lifts |
-
2016
- 2016-08-15 CN CN201610671913.5A patent/CN106089663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH243664A (en) * | 1941-04-03 | 1946-07-31 | Olaer Marine Soc | Method and apparatus for pumping. |
| US2793596A (en) * | 1953-09-04 | 1957-05-28 | Wilma K Lucas | Pump valve |
| CN2030264U (en) * | 1988-06-25 | 1989-01-04 | 李思华 | Convenient water draw-off pump |
| CN2288292Y (en) * | 1996-08-05 | 1998-08-19 | 华旭 | Full-closed piston-type double-action reciprocating pump |
| CN2477822Y (en) * | 2001-04-16 | 2002-02-20 | 邓志安 | Well sucker-rod pump oil extracting machine |
| CN206035775U (en) * | 2016-08-15 | 2017-03-22 | 孙旭 | Continuous two -way oil -well pump that lifts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089663A (en) | 2016-11-09 |
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