CN205779655U - A kind of oil-well pump sand-proof snap ring - Google Patents
A kind of oil-well pump sand-proof snap ring Download PDFInfo
- Publication number
- CN205779655U CN205779655U CN201620510014.2U CN201620510014U CN205779655U CN 205779655 U CN205779655 U CN 205779655U CN 201620510014 U CN201620510014 U CN 201620510014U CN 205779655 U CN205779655 U CN 205779655U
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- oil
- snap ring
- sand
- well pump
- sand control
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Abstract
The utility model discloses a kind of oil-well pump sand-proof snap ring, this sands-proof check ring set is contained on oil pump plunger assembly, and between fluid outlet and plunger seal, the outer peripheral face of described oil pump plunger assembly is provided with the cannelure of accommodating described sand control snap ring；Described sand control snap ring is made up of elastomeric material, with oil pumping barrel inner peripheral surface interference fit, being provided with the tooled joint passed through for tiny sand grains on sand control snap ring, the particle diameter of described tiny sand grains is less than the gap between described plunger seal outer peripheral face and described oil pumping barrel inner peripheral surface.This sand control snap ring not pressure-bearing in oil pumping process, only blocks the sand grains that particle diameter is bigger, prevents in the gap that sand grains enters between oil pumping barrel and oil pump plunger piston, solve oil well pump sand card problem.
Description
Technical field
This utility model relates to oil extraction in oil field kit field, particularly to a kind of sand control snap ring being arranged in oil well pump.
Background technology
The oil well pump of the most domestic more than 90% is reciprocating oil-well pump, is made up of oil pump plunger assembly, oil pumping barrel and standing valve assembly.In oil well pump work process, owing to there being certain gap between oil pumping barrel and oil pump plunger piston, and the sand grains entrained by produced liquid in oil well varies, and therefore oil well pump sand card is modal oil well pump fault.
Utility model content
For oil well pump sand card problem present in prior art, the purpose of this utility model is to provide a kind of oil-well pump sand-proof snap ring.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of oil-well pump sand-proof snap ring, this sands-proof check ring set is contained on oil pump plunger assembly, and between fluid outlet and plunger seal, the outer peripheral face of described oil pump plunger assembly is provided with the cannelure of accommodating described sand control snap ring；Described sand control snap ring is made up of elastomeric material, with oil pumping barrel inner peripheral surface interference fit, being provided with the tooled joint passed through for tiny sand grains on sand control snap ring, the particle diameter of described tiny sand grains is less than the gap between described plunger seal outer peripheral face and described oil pumping barrel inner peripheral surface.
Further, several described tooled joints are circumferentially uniformly arranged on the outside of described sand control snap ring.
Further, the described cyclization of falling tooled joint is distributed around the divergence expression of axis.
Further, the width of described tooled joint is less than 0.01mm.
Further, described sand control snap ring is made up of tetrafluoroethene material.
This utility model is to be provided with on oil pump plunger assembly and the elastic sand control snap ring of oil pumping barrel internal diameter generation interference fit, this sand control snap ring surface outside offers a plurality of pilot seam vertically, make this sand control snap ring not pressure-bearing in oil pumping process, only block the sand grains that particle diameter is bigger, prevent in the gap that sand grains enters between oil pumping barrel and oil pump plunger piston, solve oil well pump sand card problem.
Accompanying drawing explanation
Fig. 1 is the partial cutaway schematic of this utility model oil-well pump sand-proof snap ring；
Fig. 2 is the structural representation of numbering 4 sand control snap ring in Fig. 1;
In figure, 1 sucker rod, 2 oil pumping barrels, 3 oil pump plunger assemblies, 3.1 fluid outlets, 3.2 plunger seal, 3.3 cannelures, 4 sand control snap rings, 4.1 fall tooled joint.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and technique effect clearer, below in conjunction with the accompanying drawings and specific embodiment is described in detail.
A kind of oil-well pump sand-proof snap ring as depicted in figs. 1 and 2, sand control snap ring 4 is sleeved on oil pump plunger assembly 3, connect on oil pump plunger assembly 3 and have sucker rod 1, specifically, sand control snap ring 4 is arranged between fluid outlet 3.1 and plunger seal 3.2, and the outer peripheral face of oil pump plunger assembly 3 is provided with the cannelure 3.3 of accommodating sand control snap ring.
Sand control snap ring 4 is made up of elastomeric material, the most specifically it is made up of tetrafluoroethene material, sand control snap ring 4 and the inner peripheral surface interference fit of oil pumping barrel 2, sand control snap ring 4 is provided with several that pass through for tiny sand grains and falls tooled joint 4.1, several fall tooled joint 4.1 and are circumferentially uniformly arranged on the outside of sand control snap ring 4, cyclization is distributed around the divergence expression of axis, and the width of tooled joint 4.1 is less than 0.01mm.
Operation principle:In the up oil pumping process of oil pump plunger assembly 3, plunger upper part oil liquid pressure is more than plunger bottom oil liquid pressure, in this process, gap between plunger seal 3.2 outer surface and the oil pumping barrel 2 of oil well pump is being missed always, 4 fine particle sands of sand control snap ring filter out, only the granule less than 0.01mm could pass through sand control snap ring 4, owing to the gap between plunger external seal body 3.2 surface and the oil pumping barrel 2 of oil well pump is more than this size, small sand grains has no effect on the work of oil well pump.Sand grains more than 0.01mm is blocked by sand control snap ring 4, and when oil-pumping plunger down stroke, the fluid flow through by bottom is taken away.
Above-mentioned example is only intended to this utility model is described, embodiment of the present utility model is not limited to these examples, and what those skilled in the art were made meets the various detailed description of the invention of this utility model thought all within protection domain of the present utility model.
Claims (5)
1. an oil-well pump sand-proof snap ring, it is characterised in that this sands-proof check ring set is contained on oil pump plunger assembly, and between fluid outlet and plunger seal, the outer peripheral face of described oil pump plunger assembly is provided with the cannelure of accommodating described sand control snap ring；Described sand control snap ring is made up of elastomeric material, with oil pumping barrel inner peripheral surface interference fit, being provided with the tooled joint passed through for tiny sand grains on sand control snap ring, the particle diameter of described tiny sand grains is less than the gap between described plunger seal outer peripheral face and described oil pumping barrel inner peripheral surface.
2. oil-well pump sand-proof snap ring as claimed in claim 1, it is characterised in that several described tooled joints are circumferentially uniformly arranged on the outside of described sand control snap ring.
3. oil-well pump sand-proof snap ring as claimed in claim 2, it is characterised in that the described cyclization of falling tooled joint is distributed around the divergence expression of axis.
4. oil-well pump sand-proof snap ring as claimed in claim 1, it is characterised in that the width of described tooled joint is less than 0.01mm.
5. oil-well pump sand-proof snap ring as claimed in claim 1, it is characterised in that described sand control snap ring is made up of tetrafluoroethene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620510014.2U CN205779655U (en) | 2016-05-31 | 2016-05-31 | A kind of oil-well pump sand-proof snap ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620510014.2U CN205779655U (en) | 2016-05-31 | 2016-05-31 | A kind of oil-well pump sand-proof snap ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779655U true CN205779655U (en) | 2016-12-07 |
Family
ID=58138732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620510014.2U Active CN205779655U (en) | 2016-05-31 | 2016-05-31 | A kind of oil-well pump sand-proof snap ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779655U (en) |
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2016
- 2016-05-31 CN CN201620510014.2U patent/CN205779655U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |