CN203213977U - Rotary internal flow centralizer for lifting full-metal screw pump - Google Patents
Rotary internal flow centralizer for lifting full-metal screw pump Download PDFInfo
- Publication number
- CN203213977U CN203213977U CN 201320137899 CN201320137899U CN203213977U CN 203213977 U CN203213977 U CN 203213977U CN 201320137899 CN201320137899 CN 201320137899 CN 201320137899 U CN201320137899 U CN 201320137899U CN 203213977 U CN203213977 U CN 203213977U
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- centralizer
- positive cover
- supporting positive
- screw pump
- axle
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Abstract
The utility model provides a rotary internal flow centralizer for lifting a full-metal screw pump. The centralizer comprises a core shaft connected between two oil pumping rods, wherein a centralizing sleeve is sleeved on the core shaft as a torque transferring component; the centralizing sleeve is in clearance fit with the core shaft and can freely rotate around the core shaft; and the external diameter of the centralizing sleeve is slightly less than the internal diameter of an oil pipe; the centralizing sleeve is in an internal hollow structure of which the upper end and the lower end are provided with side openings; the side openings in the upper end and the lower end of the centralizing sleeve are communicated with an internal cavity to be taken as a flow channel. The centralizer made of metal materials can be applied to high temperature environments of a thermal production well. The rotary centralizing sleeve is in clearance fit with the oil pipe, so that the abrasion is reduced due to rotation movements only when the centralizing sleeve comes into contact with the oil pipe. Thus, the mutual-abrasion duration time is reduced; and the abrasion quantity is decreased effectively. As a result, the service life is prolonged.
Description
Technical field
The utility model relates to the oil pumping rod centering device of petroleum industry screw bolt well, relates to a kind of rotary interior stream centralizer for the lifting of all-metal screw pump specifically.
Background technology
In the oil well of producing with screw pump, sucker rod rotates to provide power to screw pump in oil pipe.In the relative rotary motion of sucker rod and oil pipe, the two certainly exists mutual wearing and tearing.For generally being lowered to oil pumping rod centering device, the alleviation frictional dissipation sets upright anti-attrition.The existing centralizer that is used for screw bolt well adopts nonmetals such as nylon, rubber to make wear-out part mostly, and the all-metal screw pump is mainly used in thick oil thermal extraction and carries out lifting.Existing nonmetal centralizer can't be applicable to hot environment, so must solve the rod tube wear problem of such hole condition.
By retrieval, also do not find similar techniques, so in view of this, at the problems referred to above, propose a kind of all-metal screw pump lifting oil pumping rod centering device reasonable in design and that solved above-mentioned disappearance.
Summary of the invention
The purpose of this utility model is to provide a kind of rod tube rate of depreciation of slowing down, and prolongs the rotary interior stream centralizer that is used for the lifting of all-metal screw pump in rod tube application life and oil well production cycle.
The purpose of this utility model can realize by following technical measures:
This centralizer comprises and is connected two axles between the sucker rod, is with supporting positive cover on the described axle as the moment of torsion transmitting element, and supporting positive cover and axle are matched in clearance and can rotate freely around axle that the supporting positive cover external diameter is slightly less than pipe aperture.
The purpose of this utility model also can realize by following technical measures:
Described supporting positive cover is the structure of upper and lower side side openning, boring, and it is the side opening and inner cavity connection at two ends up and down, as the fluid passage.
The whole employing of described this centralizer can be made by resistant to elevated temperatures metal material.
Described supporting positive cover and axle are in contact with one another at upper and lower side two places, and adopt spray treatment in contact portion and supporting positive cover external surface, the spraying abrasion-proof metal level, and polish processing.
A described axle wherein end is offered internal thread, the other end is offered external screw thread, offer internal thread one end and be connected with the external screw thread of sucker rod, offer an externally threaded end and be connected with the rod collar internal thread, and rod collar connects the external screw thread of another root sucker rod again by self internal thread.
Described supporting positive cover is offered an externally threaded end by axle and is inserted in.
Described axle is offered an end of internal thread and is offered the limiting stand of restriction supporting positive cover axially-movable, and described axle is offered supporting positive cover is limited in an externally threaded end by the rod collar that connects axially-movable.
Compared to prior art, the utlity model has following beneficial effect:
The whole metal material that adopts of the utility model centralizer is made, can be high temperature resistant; Supporting positive cover and axle contact portion and supporting positive cover external surface adopt spray treatment, and polish processing, with the power of reducing friction and strengthen corrosion resistance, and can be in the medium-term and long-term work of hot environment.
In a word, advantage of the present utility model is: 1, the whole metal material that adopts of centralizer is made, and can be used in the thermal production well hot environment; 2, matched in clearance between rotary supporting positive cover and the oil pipe only rotates when contact and carries out anti-attrition, has reduced mutual wearing and tearing duration, effectively alleviates wear extent, has prolonged application life.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment:
Relevant detailed description of the present utility model and technology contents, conjunction with figs. is described as follows, however accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
With reference to accompanying drawing 1, this centralizer is made up of axle 1, rotation supporting positive cover 2 and rod collar 3.Its central axis 1 one ends are the sucker rod internal thread, and the other end is the sucker rod external screw thread, and axle 1 is passed rotation supporting positive cover 2, and male end is connected with rod collar 3, and the utility model has namely been finished assembling.The contact portion spraying abrasion-proof metal level of axle 1 and supporting positive cover 2.Supporting positive cover 2 external surface spraying abrasion-proof metal levels also polish processing.
During use it being substituted former rod collar is installed between two sucker rods.Rotation supporting positive cover external diameter is slightly smaller than pipe aperture, and free to rotate, rotation supporting positive cover and oil pipe matched in clearance in the sucker rod motion process, and around the axle rotation, play the effect of setting upright anti-attrition.The oil pipe inner fluid enters its inner through hole through the side opening of rotation supporting positive cover one end, and flows out along the side opening of the other end.Flow out unobstructed effect in order to strengthen, the axle outer wall corresponding with supporting positive cover offered the indent annular groove.
The utility model has improved the temperature resistant capability of screw pump well pumping rod centering device, and has strengthened anti-attrition and corrosion resistant ability by structure and processing technology design, can adapt to high-temp thermal recovery well environment for use preferably.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (7)
1. one kind is used for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that comprising and be connected two axles between the sucker rod, be with supporting positive cover on the described axle as the moment of torsion transmitting element, supporting positive cover and axle are matched in clearance and can rotate freely around axle that the supporting positive cover external diameter is slightly less than pipe aperture.
2. according to claim 1 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that described supporting positive cover is the structure of upper and lower side side openning, boring, it is the side opening and inner cavity connection at two ends up and down, as the fluid passage.
3. according to claim 1 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that the whole employing of described this centralizer can make by resistant to elevated temperatures metal material.
4. according to claim 1 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that described supporting positive cover and axle are in contact with one another at upper and lower side two places, and in contact portion and supporting positive cover external surface employing spray treatment, the spraying abrasion-proof metal level, and polish processing.
5. according to claim 1 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that described axle wherein an end offer internal thread, the other end is offered external screw thread, offering internal thread one end is connected with the external screw thread of sucker rod, offer an externally threaded end and be connected with the rod collar internal thread, and rod collar connects the external screw thread of another root sucker rod again by self internal thread.
6. according to claim 5 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that described supporting positive cover offers an externally threaded end by axle and be inserted in.
7. according to claim 6 a kind of for stream centralizer in all-metal screw pump lifting rotary, it is characterized in that described axle offers the limiting stand that restriction supporting positive cover axially-movable is offered in an end of internal thread, described axle is offered an externally threaded end by the axially-movable of the rod collar restriction supporting positive cover that connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320137899 CN203213977U (en) | 2013-03-25 | 2013-03-25 | Rotary internal flow centralizer for lifting full-metal screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320137899 CN203213977U (en) | 2013-03-25 | 2013-03-25 | Rotary internal flow centralizer for lifting full-metal screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203213977U true CN203213977U (en) | 2013-09-25 |
Family
ID=49203524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320137899 Expired - Fee Related CN203213977U (en) | 2013-03-25 | 2013-03-25 | Rotary internal flow centralizer for lifting full-metal screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203213977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
| CN110230474A (en) * | 2019-07-02 | 2019-09-13 | 北京长城博创科技有限公司 | Conductive centralizer |
-
2013
- 2013-03-25 CN CN 201320137899 patent/CN203213977U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
| CN110230474A (en) * | 2019-07-02 | 2019-09-13 | 北京长城博创科技有限公司 | Conductive centralizer |
| CN110230474B (en) * | 2019-07-02 | 2024-10-01 | 北京长城博创科技有限公司 | Conductive Centralizer |
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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 |
Granted publication date: 20130925 Termination date: 20190325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |