CN203130450U - Linear-motor two-way oil well pump - Google Patents
Linear-motor two-way oil well pump Download PDFInfo
- Publication number
- CN203130450U CN203130450U CN 201320091978 CN201320091978U CN203130450U CN 203130450 U CN203130450 U CN 203130450U CN 201320091978 CN201320091978 CN 201320091978 CN 201320091978 U CN201320091978 U CN 201320091978U CN 203130450 U CN203130450 U CN 203130450U
- Authority
- CN
- China
- Prior art keywords
- plunger
- pump barrel
- oil well
- pump
- way oil
- 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.)
- Expired - Fee Related
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 23
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a linear-motor two-way oil well pump and belongs to the technical field of oil well pumps. The oil well pump is composed of an oil pipe, an upper joint, an outer pipe, a lower joint, a sand filtering pipe, a pump cylinder assembly, a plunger assembly and a motor push-pull rod. The pump cylinder assembly is disposed in the outer pipe, a two-way oil cavity is formed between the pump cylinder assembly and the outer pipe, a two-way oil hole is arranged on the lower portion of a large pump cylinder, and an annular oil cavity is formed between the lower portion of the large pump cylinder and the upper portion of a small plunger. According to the linear-motor two-way oil well pump, the structure is simple, the design is reasonable, the displacement can be divided into an upper stroke and a lower stroke to be completed, the motor power is reduced, and energy is saved.
Description
Technical field
The utility model relates to the oil well pump technical field, the two-way oil well pump of especially a kind of linear electric motor.
Background technique
At present, the mechanical oil recovery in oil field, various countries mostly uses traditional three to take out (pumping unit, sucker rod and oil well pump) equipment, three take out equipment exists many drawbacks, very heavy as equipment, bulky, the cost height, power consumption is big, and the problem of beam hanger and oil pipe eccentric wear appears in oil pumping process unavoidably, developed linear dynamo oil pump in recent years in succession for addressing the above problem, its structure generally is that the drum type linear electric motor are lowered to oil well together with oil well pump, the stator of linear electric motor is linked to each other with the pump barrel of oil well pump, the mover of linear electric motor links to each other with plunger, its oil pumping principle is similar to traditional oil well pump, and during work, electric mover drives plunger and pumps, unidirectional stroke lifting fluid, be the working stroke oil pumping, the major defect of this structure is: the working stroke motor load is very big, and inoperative stroke empty race is the again wasted.
Summary of the invention
Technical assignment of the present utility model is the two-way oil well pump of a kind of linear electric motor that provides at above the deficiencies in the prior art.
The technological scheme that its technical problem that solves the utility model adopts is: the two-way oil well pump of a kind of linear electric motor, constituted by oil pipe, upper connection, outer tube, lower contact, sand screen, pump barrel assembly, plunger piston assembly and motor pull bar, described pump barrel assembly is positioned at the inside of outer tube, and and described outer tube between form two-way oil pocket, bottom at big pump barrel is provided with two-way oilhole, forms annular oil cavity between the bottom of described big pump barrel and the top of small plunger.
Described big pump barrel is connected with little pump barrel by the pump barrel conversion adapter, and the upper end of described big pump barrel is connected with fixed valve base by the fixed valve base joint, and the lower end of described little pump barrel is connected with lower contact.
Big plunger is connected with small plunger by the plunger conversion adapter, and the upper end of described big plunger is connected with the valve seat that moves about by the valve base joint that moves about, and the lower end of described small plunger is connected with the motor pull bar by interlink, is provided with oilhole in the bottom of described small plunger.
The top of described upper connection is provided with slag screen, is provided with oilhole at described slag screen.
Compared with prior art, the utlity model has following outstanding beneficial effect:
1, because the utility model is two-way oil well pump, can be decomposed into upper and lower two strokes to discharge capacity finishes, by matching big small pump diameter, make the discharge capacity of down stroke greater than the discharge capacity of up stroke, electric mover, pull bar and plunger piston assembly all can be as counterweights during because of down stroke, so can reduce power of motor greatly, realize energy-conservation.
2, slag screen is equipped with on upper connection of the present utility model top, can prevent that the rust sheet in the oil pipe, dirty sheet and sand setting etc. from falling into oil well pump, avoids holddown.
3, linear electric motor are positioned at the oil well pump below, and no fluid passes through in the motor, can guarantee the excellent sealing of motor, prolongs its working life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with Figure of description the utility model is done following detailed description.
As shown in the figure, the two-way oil well pump of a kind of linear electric motor, constituted by oil pipe 1, upper connection 2, outer tube 3, lower contact 4, sand screen 5, pump barrel assembly 6, plunger piston assembly 7 and motor pull bar 8, described pump barrel assembly 6 is positioned at the inside of outer tube 3, and and described outer tube 3 between form two-way oil pocket 9, described pump barrel assembly 6 and plunger piston assembly 7 are the reducing combined type, are provided with two-way oilhole 27 in the bottom of big pump barrel 10, form annular oil cavity 12 between the top of the bottom of described big pump barrel 10 and small plunger 11.
Described big pump barrel 10 is connected with little pump barrel 14 by pump barrel conversion adapter 13, and the upper end of described big pump barrel 10 is connected with fixed valve base 16 by fixed valve base joint 15, and the lower end of described little pump barrel 14 is connected with lower contact 4.
Big plunger 17 is connected with small plunger 11 by plunger conversion adapter 18, the upper end of described big plunger 17 is connected with the valve seat 20 that moves about by the valve base joint 19 that moves about, the lower end of described small plunger 11 is connected with motor pull bar 8 by interlink 21, is provided with oilhole 22 in the bottom of described small plunger 11.
The top of described upper connection 2 is provided with slag screen 23, is provided with oilhole 22 at described slag screen 23.
As shown in the figure, when plunger is up, big oil pumping chamber 24 volumes diminish, and pressure increases, and the valve ball 25 that moves about is closed, fixed valve ball 26 is opened, meanwhile, the volume of annular oil cavity 12 increases, so the fluid of discharging from fixed valve ball 26 divides two-part, flow through two-way oil pocket 9, two-way oilhole 27 of a part filled annular oil cavity 12, and another part is discharged from the oilhole 22 of slag screen 23.
When the plunger down stroke, big oil pumping chamber 24 volumes increase, pressure diminishes, and fixed valve ball 26 is closed, and the valve ball 25 that moves about is opened, fluid enters in the plunger through the oilhole 22 of sand screen 5 and small plunger 11, fill big oil pumping chamber 24, meanwhile, annular oil cavity 12 volumes diminish, fluid is discharged from the oilhole 22 of slag screen 23 through two-way oilhole 27, two-way oil pocket 9; Finished two work during down stroke, one is that big oil pumping chamber 24 sucks fluid, and another is that annular oil cavity 12 is discharged fluid.
So move in circles, just realized two-way oil pumping work.
Claims (4)
1. two-way oil well pump of linear electric motor, constituted by oil pipe, upper connection, outer tube, lower contact, sand screen, pump barrel assembly, plunger piston assembly and motor pull bar, it is characterized in that described pump barrel assembly is positioned at the inside of outer tube, and and described outer tube between form two-way oil pocket, bottom at big pump barrel is provided with two-way oilhole, forms annular oil cavity between the bottom of described big pump barrel and the top of small plunger.
2. the two-way oil well pump of a kind of linear electric motor according to claim 1, it is characterized in that described big pump barrel is connected with little pump barrel by the pump barrel conversion adapter, the upper end of described big pump barrel is connected with fixed valve base by the fixed valve base joint, and the lower end of described little pump barrel is connected with lower contact.
3. the two-way oil well pump of a kind of linear electric motor according to claim 1, it is characterized in that big plunger is connected with small plunger by the plunger conversion adapter, the upper end of described big plunger is connected with the valve seat that moves about by the valve base joint that moves about, the lower end of described small plunger is connected with the motor pull bar by interlink, is provided with oilhole in the bottom of described small plunger.
4. the two-way oil well pump of a kind of linear electric motor according to claim 1 is characterized in that being provided with slag screen on the top of described upper connection, is provided with oilhole at described slag screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091978 CN203130450U (en) | 2013-02-28 | 2013-02-28 | Linear-motor two-way oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091978 CN203130450U (en) | 2013-02-28 | 2013-02-28 | Linear-motor two-way oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130450U true CN203130450U (en) | 2013-08-14 |
Family
ID=48938432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091978 Expired - Fee Related CN203130450U (en) | 2013-02-28 | 2013-02-28 | Linear-motor two-way oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061245A (en) * | 2017-06-11 | 2017-08-18 | 江苏航天鸿鹏数控机械有限公司 | A kind of stepping oil extraction pump |
-
2013
- 2013-02-28 CN CN 201320091978 patent/CN203130450U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061245A (en) * | 2017-06-11 | 2017-08-18 | 江苏航天鸿鹏数控机械有限公司 | A kind of stepping oil extraction pump |
| CN107061245B (en) * | 2017-06-11 | 2019-02-19 | 江苏航天鸿鹏数控机械有限公司 | A kind of stepping oil extraction pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201588602U (en) | Energy saving hydraulic pumping unit | |
| CN101592026A (en) | A new type of energy-saving hydraulic pumping unit | |
| CN104018814A (en) | Double-balanced range-extended hydraulic oil pumping unit | |
| CN206830551U (en) | Pumping unit hydraulic system | |
| CN202745826U (en) | Hydraulic spring energy storage pumping unit | |
| CN201041141Y (en) | Electric submersible bi-directional oil-pumping anti-sand pump | |
| CN202545203U (en) | Downhole hydraulic oil well pump | |
| CN201443367U (en) | Oil pumping well power cylinder type hydraulic device | |
| CN203130450U (en) | Linear-motor two-way oil well pump | |
| CN207673502U (en) | A kind of rod pumping pump and ground driving screw pump combined type oil pumping system | |
| CN205078410U (en) | Two effect hydraulic piston pumps | |
| CN202579123U (en) | Double-acting oil well pump with high discharge capacity | |
| CN201148965Y (en) | Movable barrel type straight line motor oil-well pump | |
| CN201908814U (en) | Two-stage pump cylinder and two-stage plunger piston combined pump cylinder pipe type pump | |
| CN204984366U (en) | Downhole reciprocating synergistic lifting device | |
| CN103075133A (en) | Flow compensation type hydraulic pumping unit | |
| CN103775318A (en) | Hydraulic transmission rodless oil pumping system | |
| CN204704095U (en) | A Double Load-Loading Anti-air Oil Pump | |
| CN203022704U (en) | Dual-plunger-oil-cylinder-type hydraulic oil pumping machine | |
| CN201461292U (en) | Oil-gas recovery pump | |
| CN203394716U (en) | Energy-saving oil well pump | |
| CN201705632U (en) | Rodless hydraulic deep oil well pump | |
| CN202673666U (en) | Sucker rod load reducing device | |
| CN201874541U (en) | Energy-saving device for oil-pumping machine | |
| CN203925438U (en) | A kind of pair of balance extended-range hydraulic pumping unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140228 |