CN2869379Y - Eccentric valve type bias-wear-proof oil pump - Google Patents
Eccentric valve type bias-wear-proof oil pump Download PDFInfo
- Publication number
- CN2869379Y CN2869379Y CN 200520021843 CN200520021843U CN2869379Y CN 2869379 Y CN2869379 Y CN 2869379Y CN 200520021843 CN200520021843 CN 200520021843 CN 200520021843 U CN200520021843 U CN 200520021843U CN 2869379 Y CN2869379 Y CN 2869379Y
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- CN
- China
- Prior art keywords
- pump
- polished rod
- eccentric
- short circuit
- cover
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- 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
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Abstract
An oil pump with a leaning valve preventing the leaning worn is to solve mainly the problems of the heavier worn and lower efficiency in the prior oil pump, characterized in that on the top of a trundle coupling (2) is connected with a sharp rod(5), on the lower of a short pipe (4) is connected to an eccentric house (6), between the eccentric house (6) and the sharp rod(5) Is equipped with a sharp rod sleeve (7), on the lower of the sharp rod sleeve (7) is connected with a pump house (1), in the side wall of the pump house (1) is opened with a radial through hole (8), outside the sharp rod (7) is connected to an inner valve seat (10) with a step(9),inside the loop chamber between the inner valve seat (10) and the eccentric house (6) is equipped with a valve ball (11). The pump has the advantages of larger pump flowing volume, less oil sharp rod and the piston worn, higher pump efficiency and lower maintenance cost.
Description
Technical field:
The utility model relates to used oil well pump in the oil recovery field, a kind of oil field, especially partially valve formula eccentric wear prevention pumping pump.
Background technique:
In oil recovery field, oil field, oil well pump is one of visual plant.At present, the oil well pump majority that use in the oil field is common oil well pump, and the fixed valve base hole area of this oil well pump is less, and fixed valve ball and the standing valve cover area of passage when opening is also little.At latter period of oilfield development,, cause the increase of viscosity of crude with the popularization of polymer displacement of reservoir oil tech, common tubing pump, whole tube pump are in taking out the viscous crude process, all there is the descending resistance increase of plunger in pump plug, the oil well pump, causes the roofbolt lower knuckle, cause the eccentric wear of rod tube.Reduce the efficient of oil well pump, cause sucker rod partial wear, shortened the working life of sucker rod, pipe, shortened pump detection period.Cause in recent years the well number of examining pump because of rod and tube partial-wear to rise significantly.
The model utility content:
In order to overcome serious, the inefficient deficiency of existing oil well pump eccentric wear, the utility model provides a kind of inclined to one side valve formula eccentric wear prevention pumping pump, this inclined to one side valve formula eccentric wear prevention pumping pump has reduced the wearing and tearing of the eccentric wear and the oil pipe of sucker rod, has improved the efficient of pump, has reduced maintenance cost.
Technical solutions of the utility model are: this inclined to one side valve formula eccentric wear prevention pumping pump comprises pump barrel, the flower joint, plunger and oil pipe short circuit, the flower upper end of joint is connected with polished rod, oil pipe short circuit lower end is connected with eccentric housing, between eccentric housing and the polished rod polished rod cover is arranged, polished rod cover lower end connects pump barrel, on the pump barrel sidewall radial direction through hole is arranged, the polished rod cover is externally connected with the internal valve cover for seat of stage in addition, ring cavity between internal valve cover for seat and eccentric housing is built-in with valve ball, eccentric housing lower end links to each other with pump barrel by short circuit and box cupling, pump barrel, the internal valve cover for seat, short circuit and box cupling form ring cavity, and ring cavity communicates with flower joint and oil pipe short circuit respectively.
Above-mentioned polished rod and polished rod cover transition fit; The plunger lower end is the weighted lever joint fixedly; The polished rod cover is by connecting tube and pump barrel cutting ferrule mutually.
The beneficial effect that the utlity model has is: the standing valve of this inclined to one side valve formula eccentric wear prevention pumping pump is on the top of piston, and the pump plug is in the low pressure area of pump all the time when suction, reduces the descending resistance of pump plug and sucker rod, to greatest extent the eccentric wear of control or elimination rod tube; The pump section of crossing of rod string is passed standing valve in the mode of polished rod simultaneously, be in the low pressure area under the pump with regard to the lower end surface that makes rod string like this, thereby eliminated the longitudinal pressure that causes because of liquid buoyancy to roofbolt, and can under pump, add weighted lever, flatten when descending liquid to the on-way resistance of roofbolt with the weight of weighted lever, therefore can be implemented in the whole stroke procedure, a roofbolt tension and pressurized not, thereby eliminated the eccentric wear reason, also reduced alternate load, made roofbolt keep good stress and working life.
Description of drawings:
Accompanying drawing 1 is the utility model structure sectional view.
1-pump barrel among the figure, 2-flower joint, 3-plunger, 4-oil pipe short circuit, 5-polished rod, the eccentric housing of 6-, 7-polished rod cover, 8-hole, 9-stage, 10-internal valve cover for seat, 11-valve ball, 12-short circuit, 13-box cupling, 14-ring cavity, 15-weighted lever joint, 16-connecting tube.
Embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this inclined to one side valve formula eccentric wear prevention pumping pump comprises pump barrel 1, flower joint 2, plunger 3 and oil pipe short circuit 4, flower joint 2 upper ends are connected with polished rod 5, oil pipe short circuit 4 lower ends are connected with eccentric housing 6, polished rod cover 7 is arranged between eccentric housing 6 and the polished rod 5, polished rod overlaps 7 lower ends and connects pump barrel 1, on pump barrel 1 sidewall radial direction through hole 8 is arranged, polished rod cover 7 is externally connected with the internal valve cover for seat 10 of stage 9 in addition, the ring cavity that internal valve cover for seat 10 and eccentric housing are 6 is built-in with valve ball 11, eccentric housing 6 lower ends link to each other pump barrel 1 by short circuit 12 and box cupling 13 with pump barrel 1, internal valve cover for seat 10, short circuit 12 and box cupling 13 form ring cavity 14, and ring cavity 14 communicates with flower joint 2 and oil pipe short circuit 4 respectively.Polished rod 5 overlaps 7 transition fit with polished rod; Plunger 3 lower ends are weighted lever joint 15 fixedly; Polished rod cover 7 is by connecting tube 16 and pump barrel 1 cutting ferrule mutually.
In actual use, the eccentric housing 6 of this inclined to one side valve formula eccentric wear prevention pumping pump is on the top of plunger 3, and plunger 3 is in the low pressure area of pump all the time when suction, reduce the descending resistance of plunger 3 and sucker rod, to greatest extent the eccentric wear of control or elimination rod tube; The pump section of crossing of rod string is passed eccentric housing 6 in the mode of polished rod 5 simultaneously, be in the low pressure area under the pump with regard to the lower end surface that makes rod string like this, thereby eliminated the longitudinal pressure that causes because of liquid buoyancy to rod string, for preventing polished rod 5 eccentric wears, at polished rod 5 outer fixing polished rod cover 7 is arranged, polished rod 5 overlaps 7 transition fit with polished rod; And can under pump, add weighted lever, flatten when descending liquid to the on-way resistance of roofbolt with the weight of weighted lever, therefore can be implemented in the whole stroke procedure, a roofbolt tension and pressurized not, thereby eliminated the eccentric wear reason, also reduced alternate load, made roofbolt keep good stress and working life.This inclined to one side valve formula eccentric wear prevention pumping pump has reduced the wearing and tearing of the eccentric wear and the oil pipe of sucker rod, has improved the efficient of pump, has reduced maintenance cost.
This oil well pump process parameter satisfies the suction requirement of oil well, the technology success rate is 100%, application is the same with the conventional pumps operation, do not increase any work operations amount, do not need former pumping unit, suction parameter are done any change, but see that from the testing current result electric current up and down of motor is more approaching, show that from worker's map analysis the descending resistance of pump plug obviously reduces yet, the chance of rod and tube partial-wear also can decrease or eliminate, and plays the effect of control eccentric wear.
Claims (4)
1, a kind of inclined to one side valve formula eccentric wear prevention pumping pump, comprise pump barrel (1), flower joint (2), plunger (3) and oil pipe short circuit (4), it is characterized in that: flower joint (2) upper end is connected with polished rod (5), oil pipe short circuit (4) lower end is connected with eccentric housing (6), between eccentric housing (6) and the polished rod (5) polished rod cover (7) is arranged, polished rod cover (7) lower end connects pump barrel (1), on pump barrel (1) sidewall radial direction through hole (8) is arranged, polished rod cover (7) is externally connected with the internal valve cover for seat (10) of stage (9) in addition, ring cavity between internal valve cover for seat (10) and eccentric housing (6) is built-in with valve ball (11), eccentric housing (6) lower end links to each other with pump barrel (1) by short circuit (12) and box cupling (13), pump barrel (1), internal valve cover for seat (10), short circuit (12) and box cupling (13) form ring cavity (14), and ring cavity (14) communicates with flower joint (2) and oil pipe short circuit (4) respectively.
2, inclined to one side valve formula eccentric wear prevention pumping pump according to claim 1 is characterized in that: polished rod (5) and polished rod cover (7) transition fit.
3, inclined to one side valve formula eccentric wear prevention pumping pump according to claim 1, it is characterized in that: plunger (3) lower end is weighted lever joint (15) fixedly.
4, inclined to one side valve formula eccentric wear prevention pumping pump according to claim 1 is characterized in that: polished rod cover (7) is by connecting tube (16) and pump barrel (1) cutting ferrule mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021843 CN2869379Y (en) | 2005-10-27 | 2005-10-27 | Eccentric valve type bias-wear-proof oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021843 CN2869379Y (en) | 2005-10-27 | 2005-10-27 | Eccentric valve type bias-wear-proof oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869379Y true CN2869379Y (en) | 2007-02-14 |
Family
ID=37724314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021843 Expired - Fee Related CN2869379Y (en) | 2005-10-27 | 2005-10-27 | Eccentric valve type bias-wear-proof oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869379Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
| CN109253072A (en) * | 2018-10-31 | 2019-01-22 | 延安奇源石油工程技术服务有限公司 | A kind of double anti-oil well pumps |
| CN112922556A (en) * | 2021-03-04 | 2021-06-08 | 李青 | Double-automatic wellhead butt joint device for bailing vehicle |
-
2005
- 2005-10-27 CN CN 200520021843 patent/CN2869379Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438306A (en) * | 2016-11-24 | 2017-02-22 | 东北石油大学 | Alternating load anti-eccentric-wear pump |
| CN106438306B (en) * | 2016-11-24 | 2018-05-22 | 东北石油大学 | Alternating load eccentric abrasion prevention pumps |
| CN109253072A (en) * | 2018-10-31 | 2019-01-22 | 延安奇源石油工程技术服务有限公司 | A kind of double anti-oil well pumps |
| CN112922556A (en) * | 2021-03-04 | 2021-06-08 | 李青 | Double-automatic wellhead butt joint device for bailing vehicle |
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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: 20070214 Termination date: 20131027 |