CN202991419U - Self-aligning de-loading oil well pump driven by linear motor - Google Patents
Self-aligning de-loading oil well pump driven by linear motor Download PDFInfo
- Publication number
- CN202991419U CN202991419U CN 201220632594 CN201220632594U CN202991419U CN 202991419 U CN202991419 U CN 202991419U CN 201220632594 CN201220632594 CN 201220632594 CN 201220632594 U CN201220632594 U CN 201220632594U CN 202991419 U CN202991419 U CN 202991419U
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- plunger
- aligning
- linear motor
- pump
- deloading
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Abstract
Disclosed is a self-aligning de-loading oil well pump driven by a linear motor, and the self-aligning de-loading oil well pump is used for oil extraction. The oil well pump is mainly composed of a work pump cylinder component, a work plunger component, a self-aligning joint, a guide plunger, an outer pipe and the linear motor. The guide plunger at the lower end of the pump cylinder component moves in a centralizing cylinder so as to guarantee that the pump cylinder component aligns to the center during moving; and a large-diameter plunger and a small-diameter plunger are connected with each other through a universal self-aligning joint, decentraction caused during process and assembly is eliminated, relative motion between the plunger component and the pump cylinder component is smooth, abrasion of the pump cylinder and the plunger is reduced, running resistance is reduced, and pump clamping faults are avoided, so that load and energy consumption of the linear motor are reduced, efficiency is improved, and the technology of oil extraction by the linear motor is enabled to be easily popularized.
Description
Technical field
The utility model belongs to petroleum industry machinery exploitation oil production equipment, is specifically related to a kind of double pump cylinder dual plunger sucker rod pump that drives with linear electric motor.
Background technique
because the linear electric motor oil pumping system has energy-efficient advantage than traditional beam pumping unit system, more and more receive in recent years attention and the concern in oil field, many companies are all in this technology of research and development, wherein the technical development of linear electric motor is very fast, linear dynamo oil pump the various structures form also occurred as the key working part of this system, its technology is also constantly being improved, but still come with some shortcomings, for example, with two different-diameter pump barrels and plunger bushing connecting structure, and linear electric motor are contained in the linear dynamo oil pump of pump bottom, more rational in infrastructure than single pump barrel single plunger pump, although during its up stroke, linear motor rotor is lift tube post liquid not, but combination pump barrel and two being combined through series connection plungers that deficiency is two serial connections are all to be fitted together by a plurality of part series connection, be difficult to accomplish with one heart when processing and assembling, if concentricity is bad, can produce larger surface friction drag when combined plunger and the relative movement of combination pump barrel, the fitting surface of Fast Wearing plunger and pump barrel, sometimes even holddown can occur, linear motor rotor also may bend simultaneously, cause serious fault.Reduce this surface friction drag, traditional way is to strengthen the gap of pump barrel and plunger, but can increase pump leakage like this, reduces pump efficiency.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of combined plunger and has the self-aligning ability, and running resistance is little, and the high aligning deloading linear motor oil extraction pump of pump efficiency.
The purpose of this utility model is achieved in that a kind of aligning deloading linear motor oil extraction pump, mainly formed by working pump cartridge module, work plunger assembly, upper box cupling, upper outlet valve, aligning joint, pilot spool, urceolus, linear electric motor etc., upper outlet valve is connected in box cupling top, the path plunger is connected in the box cupling lower end, is positioned at urceolus; The work plunger assembly is comprised of path plunger, lower outlet valve, aligning joint, oiling valve, large footpath plunger, the urceolus upper end is connected with upper box cupling, the bottom is connected with linear motor stator electric by lower contact, the urceolus lower inner wall is installed the righting cylinder, the pilot spool bottom is connected with linear motor rotor, and pilot spool, large footpath pump barrel, path pump barrel are connected to form the working pump cartridge module successively.
Be provided with the aligning joint between the lower outlet valve at work plunger assembly middle part and oiling valve, the path plunger is connected by the aligning joint with large footpath plunger.
Upper outlet valve is arranged in the top oil pipe of box cupling, and the valve bonnet of upper outlet valve is open type valve cover.
Urceolus top has the oil-feed exhaust port.
The righting jacket casing is connected on the pilot spool outer wall, is Spielpassung between righting cylinder and pilot spool outer wall.
The aligning joint is the movable joint of an adjustment direction free to rotate.
The path plunger is long-plunger, and the path pump barrel is short pump barrel, and both connect together and form the matching pair of long-plunger short pump barrel type.
Compared with prior art, the effect that the utility model is useful is:
1. owing on the work plunger assembly, the aligning joint being housed, can eliminate the resistance that working pump cartridge module and work plunger assembly decentraction cause, and the working pump cartridge module has righting cylinder and pilot spool righting, make the working pump cartridge module with respect to work plunger assembly motion steady and smooth, alleviate wearing and tearing, avoid the holddown fault, simultaneously, also can reduce the matching gap of plunger and pump barrel, improve pump efficiency.
2. because the motor up stroke is pump oil-feed process, electric mover is without the fluid column weight on the lifting pump plunger, and electric mover is subjected to compressive load little, and linear electric motor suitable and that the electric mover diameter is little support the use.
3. because upper outlet valve is arranged in the oil pipe on upper box cupling top, be open type valve cover, in tubing string, the sand grains of sedimentation is difficult for falling into and blocks valve ball in valve bonnet; Simultaneously, adopt the pattern that coordinates of long-plunger short pump barrel due to path plunger and path pump barrel, can reduce like this sand grains and snap between pump barrel and plunger.Therefore, this pump has the sands-proof check function.
4. the top due to urceolus has a plurality of oil-feed exhaust ports, and the isolated gas of pump oil-feed process can be discharged, and reduces gas to the impact of pump efficiency.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present utility model.
Embodiment
Structure of the present utility model is as shown in Figure 1: a kind of aligning deloading linear motor oil extraction pump, mainly formed by working pump cartridge module, work plunger assembly, upper box cupling, upper outlet valve, aligning joint, pilot spool, urceolus, linear electric motor etc., it is characterized in that: upper outlet valve 2 is connected in box cupling 14 tops, path plunger 4 is connected in box cupling 14 lower ends, is positioned at urceolus 17; The work plunger assembly is comprised of path plunger 4, lower outlet valve 7, aligning joint 19, oiling valve 8, large footpath plunger 9, urceolus 17 upper ends are connected with upper box cupling 14, the bottom is connected with linear motor stator electric 13 by lower contact 12, urceolus 17 lower inner wall are installed righting cylinder 21, pilot spool 10 bottoms are connected with linear motor rotor 23, and pilot spool 10, large footpath pump barrel 6, path pump barrel 5 are connected to form the working pump cartridge module successively.
Be provided with aligning joint 19 between the lower outlet valve 7 at work plunger assembly middle part and oiling valve 8, path plunger 4 is connected by aligning joint 19 with large footpath plunger 9.Upper outlet valve 2 is arranged in the top oil pipe 1 of box cupling 14, and the valve bonnet 3 of upper outlet valve 2 is open type valve cover.Urceolus 17 tops have oil-feed exhaust port 15.Righting cylinder 21 is socketed in pilot spool 10 outer walls, is Spielpassung between righting cylinder 21 and pilot spool 10 outer walls.Aligning joint 19 is the movable joint of an adjustment direction free to rotate.Path plunger 4 is long-plungers, and path pump barrel 5 is short pump barrel, and both connect together and form the matching pair of long-plunger short pump barrel type.
Working principle of the present utility model is as follows:
When this pump during at up stroke, linear motor rotor 23 drives the upwards operation of working pump cartridge module, annular pump chamber 16 volumes increase, and pressure reduces, and upper outlet valve 2 and lower outlet valve 7 are closed under tubing string fluid power load, oiling valve 8 is opened under annular space submergence pressure-acting, fluid in shoe cream room 20 enters into annular pump chamber 16 by oiling valve 8, and pump is completed the oil-feed process, at this moment, fluid power load in tubing string on upper outlet valve 2, the liquid weight in not lifting of electric mover tubing string.when this pump down stroke, it is descending that linear motor rotor 23 drives the working pump cartridge module, shoe cream room 20 volumes increase, fluid is entered by the oil-feed exhaust port 15 on urceolus 17 tops, then descendingly enter in shoe cream room 20 through the interior filler opening 22 of runner hole 11 from righting plunger lower end, simultaneously, annular pump chamber 16 volumes reduce, pressure increases, oiling valve 8 cuts out, lower outlet valve 7 and upper outlet valve 2 are opened, the fluid of annular pump chamber is through oil-through hole 18, lower outlet valve 7, path plunger 4 endoporus, upper outlet valve 2 flow in oil pipe, iterative cycles like this, fluid is given rise to ground, complete oil pumping process.During the pump down stroke, fluid power load is born at the top of annular pump chamber 16, and simultaneously, oiling valve 8 also bears fluid power load.
Claims (7)
1. aligning deloading linear motor oil extraction pump, comprise working pump cartridge module, work plunger assembly, upper box cupling, upper outlet valve, aligning joint, pilot spool, urceolus and linear electric motor, it is characterized in that: upper outlet valve (2) is connected in box cupling (14) top, path plunger (4) is connected in box cupling (14) lower end, is positioned at urceolus (17); The work plunger assembly is comprised of path plunger (4), lower outlet valve (7), aligning joint (19), oiling valve (8), large footpath plunger (9), urceolus (17) upper end is connected with upper box cupling (14), the bottom is connected with linear motor stator electric (13) by lower contact (12), urceolus (17) lower inner wall is installed righting cylinder (21), pilot spool (10) bottom is connected with linear motor rotor (23), and pilot spool (10), large footpath pump barrel (6), path pump barrel (5) are connected to form the working pump cartridge module successively.
2. aligning deloading linear motor oil extraction pump according to claim 1, it is characterized in that: be provided with aligning joint (19) between the lower outlet valve (7) in the middle part of the work plunger assembly and oiling valve (8), path plunger (4) is connected by aligning joint (19) with large footpath plunger (9).
3. aligning deloading linear motor oil extraction pump according to claim 1 is characterized in that: upper outlet valve (2) is arranged in the top oil pipe (1) of box cupling (14), and the valve bonnet 3 of upper outlet valve (2) is open type valve cover.
4. aligning deloading linear motor oil extraction pump according to claim 1 is characterized in that: urceolus (17) top has oil-feed exhaust port (15).
5. aligning deloading linear motor oil extraction pump according to claim 1, it is characterized in that: righting cylinder (21) is socketed in pilot spool (10) outer wall, is Spielpassung between righting cylinder (21) and pilot spool (10) outer wall.
6. aligning deloading linear motor oil extraction pump according to claim 1 and 2, it is characterized in that: aligning joint (19) is the movable joint of an adjustment direction free to rotate.
7. aligning deloading linear motor oil extraction pump according to claim 1, it is characterized in that: path plunger (4) is long-plunger, and path pump barrel (5) is short pump barrel, and both connect together and form the matching pair of long-plunger short pump barrel type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632594 CN202991419U (en) | 2012-11-27 | 2012-11-27 | Self-aligning de-loading oil well pump driven by linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632594 CN202991419U (en) | 2012-11-27 | 2012-11-27 | Self-aligning de-loading oil well pump driven by linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991419U true CN202991419U (en) | 2013-06-12 |
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ID=48562605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220632594 Expired - Fee Related CN202991419U (en) | 2012-11-27 | 2012-11-27 | Self-aligning de-loading oil well pump driven by linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045690A1 (en) * | 2022-09-01 | 2024-03-07 | 邹淑君 | Movable joint-based double plunger pump |
-
2012
- 2012-11-27 CN CN 201220632594 patent/CN202991419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045690A1 (en) * | 2022-09-01 | 2024-03-07 | 邹淑君 | Movable joint-based double plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181127 |