CN2777243Y - Anti eccentrically wear device for oil pumping unit plunger - Google Patents
Anti eccentrically wear device for oil pumping unit plunger Download PDFInfo
- Publication number
- CN2777243Y CN2777243Y CN 200520081877 CN200520081877U CN2777243Y CN 2777243 Y CN2777243 Y CN 2777243Y CN 200520081877 CN200520081877 CN 200520081877 CN 200520081877 U CN200520081877 U CN 200520081877U CN 2777243 Y CN2777243 Y CN 2777243Y
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- CN
- China
- Prior art keywords
- plunger
- coupling head
- eccentric wear
- utility
- connecting head
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Abstract
The utility model discloses an eccentric wear preventing device for oil pump plungers, which is used in petroleum industry for various oil production wells and is particularly suitable for inclined wells. The utility model comprises an upper connecting head and a lower connecting head, wherein an automatically rotating rolling column is fixed on the lower connecting head and the upper connecting head is connected with the lower connecting head. The utility model has the advantages of simple structure, flexible rotation, no change of the self structure of a plunger pump, low cost and reliable working performance. The automatically rotating rolling column of the utility model drives an oil pump plunger to make single rotating movement for a certain angle in every stroke, so that the eccentric wear of the plunger is prevented or delayed, the loss between the plunger and a pump barrel is reduced and the purposes of extending the period of pump inspection of an oil production well and reducing the oil production cost are achieved.
Description
Technical field
The utility model belongs to the anti-eccentric wear device of the oil production equipment of petroleum industry, particularly oil pump plunger piston, is used for various oil recovery wells, is specially adapted to inclined shaft.
Background technique
At present, the device that solves oil pump plunger piston eccentric wear in the inclined shaft both at home and abroad mostly is mechanical type and forces the rotation eccentrically worn preventor.Its main working principle is by deviator, makes moving up and down of sucker rod become the radial motion of eccentrically worn preventor, does unidirectional rotary motion thereby drive plunger.By The field, find that mechanical type pressure rotation eccentrically worn preventor exists the problem of following two aspects: one, the structure of this device is comparatively complicated, easily causes article dropped in well.Two, because it is to rely on side steering in the device to drive plunger to do radially unidirectional rotary motion, in case foreign matter enters into its deviator, block side steering, it can not be rotated, mechanical type forces to rotate eccentrically worn preventor with ineffective like this.The eccentric wear of deflecting well oil withdrawal pump plunger will shorten the pump detection period of deflecting well oil withdrawal pump, increases the workover eration expense greatly, increases cost for oil production.On-the-spot its eccentric wear problem of a kind of device solves simple in structure that needs.
Summary of the invention
The purpose of this utility model provides the anti-eccentric wear device of oil pump plunger piston, and the defective that overcome the existing apparatus complex structure, easily lost efficacy is made a kind of simple in structurely, and the device that rate of fault is low reduces cost for oil production.
Use the present technique solution can reach above-mentioned purpose: oil pump plunger piston is prevented the eccentric wear device, comprises top coupling head and bottom coupling head, and the spinning roller is fixed in the coupling head of bottom, and the top coupling head is connected with the bottom coupling head.
The utility model compared with prior art simple in structure, flexible rotation, does not change low, the reliable working performance of structure, cost of plunger pump itself.It is when utilizing the sucker rod upstroke, not have relative movement between the liquid in sucker rod and the oil pipe; During down stroke, there are the characteristics of relative movement in sucker rod and the oil pipe between the liquid.Connect above oil pump plunger piston when having the spinning roller of dextrorotation, owing to do not have relative movement between the liquid in sucker rod and the oil pipe, liquid that can not is to the screw wing generation effect of dextrorotation during upstroke; And during down stroke, between the liquid relative movement is arranged in sucker rod and the oil pipe, liquid can produce active force to the right hand helix wing, by the effect resolution of forces, produce radial force left, in each stroke, do the several angle unidirectional rotary motion thereby drive plunger, play and prevent or delay the plunger eccentric wear, reduce the leakage between plunger and the pump barrel, reach prolongation oil recovery well pump detection period, reduce the purpose of cost for oil production.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be the utility model A-A to sectional view.
Embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing 1 and accompanying drawing 2, oil pump plunger piston is prevented the eccentric wear device, have top coupling head 1 and bottom coupling head 4, spinning roller 3 is fixed in the bottom coupling head 4, and top coupling head 1 is connected with bottom coupling head 4.Spinning roller 3 is provided with a screw wing at least, and its axial screw angle is any one between 5 degree-20 degree.Screw wing on the spinning roller 3 is the dextrorotation direction, and accompanying drawing 2 illustrates two screw wings.Spinning roller 3 usefulness lightweight materials are made, and weight reduction strengthens the rotation dynamics.The bottom of bottom coupling head 4 is provided with step, and the step below body of rod is provided with screw thread and is connected with the plunger of oil well pump; Its top also is provided with step bearing 2 and pressure cap is installed, and bearing 2 is connected with the inner chamber of top coupling head 1.Bearing 2 is an interference fit with the inner chamber of top coupling head 1.When the sucker rod upstroke, because well liquid and the utility model do not have relative movement, the dextrad screw wing that well liquid can not impact spinning roller 3 produces radial force; And when down stroke, well liquid and the utility model have relative movement, and well liquid impacts the dextrad screw wing, produce radial force left, thereby the oil pump plunger piston that drives bottom coupling head 4 and connection is with it done unidirectional rotary motion.Spinning roller 3 is when the plunger of bottom coupling head 4 and connection is with it done unidirectional rotary motion, keeps the top coupling head not rotate with sucker rod more than 1, prevents that sucker rod from because of rotation back-off taking place.From a pumping process, the rotation of oil pump plunger piston has randomness, and from long working procedure, and plunger rotates towards a direction all the time, and this makes between plunger and the pump barrel wearing and tearing radially reach unanimity, and has eliminated the eccentric wear phenomenon.
Claims (5)
1, the anti-eccentric wear device of oil pump plunger piston comprises top coupling head (1) and bottom coupling head (4), it is characterized in that spinning roller (3) is fixed in the bottom coupling head (4), and top coupling head (1) is connected with bottom coupling head (4).
2, the anti-eccentric wear device of oil pump plunger piston according to claim 1 is characterized in that spinning roller (3) is provided with a screw wing at least, and its axial screw angle is any one between 5 degree-20 degree.
3, the anti-eccentric wear device of oil pump plunger piston according to claim 2 is characterized in that the screw wing on the spinning roller (3) is the dextrorotation direction.
4, the anti-eccentric wear device of oil pump plunger piston according to claim 1 is characterized in that the bottom of bottom coupling head (4) is provided with step, and the step below body of rod is provided with screw thread and is connected with the plunger of oil well pump; Its top is provided with step bearing (2) and pressure cap is installed, and bearing (2) is connected with the inner chamber of top coupling head (1).
5, the anti-eccentric wear device of oil pump plunger piston according to claim 4 is characterized in that the bearing (2) and the inner chamber of top coupling head (1) are interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081877 CN2777243Y (en) | 2005-03-29 | 2005-03-29 | Anti eccentrically wear device for oil pumping unit plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520081877 CN2777243Y (en) | 2005-03-29 | 2005-03-29 | Anti eccentrically wear device for oil pumping unit plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777243Y true CN2777243Y (en) | 2006-05-03 |
Family
ID=36744628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520081877 Expired - Fee Related CN2777243Y (en) | 2005-03-29 | 2005-03-29 | Anti eccentrically wear device for oil pumping unit plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777243Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948394A (en) * | 2024-03-27 | 2024-04-30 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
-
2005
- 2005-03-29 CN CN 200520081877 patent/CN2777243Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948394A (en) * | 2024-03-27 | 2024-04-30 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
| CN117948394B (en) * | 2024-03-27 | 2024-05-28 | 兰州矿场机械有限公司 | Transmission structure of fracturing pump and fracturing pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |