CN201835796U - Ball screw switching mechanism for underground oil production - Google Patents
Ball screw switching mechanism for underground oil production Download PDFInfo
- Publication number
- CN201835796U CN201835796U CN2010205125674U CN201020512567U CN201835796U CN 201835796 U CN201835796 U CN 201835796U CN 2010205125674 U CN2010205125674 U CN 2010205125674U CN 201020512567 U CN201020512567 U CN 201020512567U CN 201835796 U CN201835796 U CN 201835796U
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- China
- Prior art keywords
- ball
- screw
- switching mechanism
- oil production
- hole oil
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Abstract
The utility model discloses a ball screw switching mechanism for underground oil production, which comprises a ball screw, wherein the ball screw is fixed on an outer pipe through a rolling bearing and a guide bush; a ball retaining device, a compression spring, a ball return device, a ball nut and a moving sliding bush are arranged in the outer pipe in sequence; balls are arranged in the ball nut; the outer side of the ball nut is connected with the guide bush through a flat key; a centering centralizer is arranged on the inner side of the guide bush; the moving sliding bush is arranged on the inner side of the centering centralizer; a supporting screw rod and a screw reversing device are arranged at the upper end of the ball screw in sequence; the ball retaining device is fixed in the outer pipe through a screw; the compression spring is fixed at the lower end of the ball screw; the ball return device is fixed on the ball nut through a screw; the upper end of the ball nut is connected with the moving sliding bush through a spline; and the centering centralizer is connected with the outer pipe through threads. The ball screw switching mechanism for underground oil production achieves the purpose of transforming rotary motion output into straight-line motion output and has the advantages of high transmission efficiency, improved system efficiency and large rated dynamic load.
Description
Technical field
The utility model relates to the mechanical oil recovery field, particularly a kind of ball-screw switching mechanism that is used for down-hole oil production.
Background technology
In recovering the oil, use straight line switching mechanism, in straight line switching mechanism, be generally used for slip screw mechanism, slider-crank mechanism, the cam mechanism of straight line output.
Slip screw mechanism has characteristics such as compact conformation, stable drive, also exists efficient lower, friction between ridge, shortcoming such as abrasion is bigger.Slider-crank mechanism and cam mechanism can't satisfy the down-hole oil production needs owing to limited by the producing well borehole size.All there are problems such as energy consumption height, rod and tube partial-wear in existing beam hanger pump oil extraction system.
Prior art does not also have a kind of ball screw framework that is applicable to down-hole oil production.
The utility model content
The utility model embodiment provides a kind of transmission efficiency the high ball-screw switching mechanism that is used for down-hole oil production in order to solve the deficiencies in the prior art.
The technical scheme that its technical problem that solves the utility model embodiment adopts is: a kind of ball-screw switching mechanism that is used for down-hole oil production, comprise ball-screw, described ball-screw is fixed on the outer tube by rolling bearing and pilot bushing, be provided with the block bead device in the described outer tube successively, the compression spring, ball-returning device, ball nut and moving sliding sleeve, be provided with ball in the described ball nut, the described ball nut outside links to each other with pilot bushing by flat key, described pilot bushing inboard is provided with the centering centralizer, described centering centralizer inboard is provided with described moving sliding sleeve, and described ball-screw upper end is provided with studdle and leading screw reverser successively.
Described block bead device by screw in described outer tube.
Described compression spring is fixed on the ball screw lower end.
Described ball-returning device by screw on described ball nut.
Described ball nut upper end connects described moving sliding sleeve by spline.
Described centering centralizer is connected with described outer tube by screw thread.
The described ball nut carrying number of turns is 10 circles, and the pearl of described ball nut directly is 7.144mm.
Described rolling bearing is the combination bearing of thrust ball bearing and needle roller thrust bearing.
The beneficial effect of the technical scheme that the utility model embodiment provides is: the down-hole oil production ball-screw switching mechanism that the utility model relates to is mainly used in the down-hole Rodless oil extraction system, realized rotation motion to linear output, adopt the switching mechanism of down-hole oil production ball-screw, the advantage that have the transmission efficiency height, improve system effectiveness, dynamic load rating is big, and can overcome the problem of side-abrasion of rod string.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, to do one to the accompanying drawing that uses among the embodiment below introduces simply, apparently, below listed accompanying drawing only be embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of ball-screw switching mechanism generalized section that is used for down-hole oil production that the utility model embodiment provides.
In the accompanying drawing, the component list of each label representative is as follows:
1. rolling bearing, 2. outer tube, 3. block bead device, 4. compression spring, 5. ball-screw, 6. flat key, 7. ball nut, 8. ball-returning device, 9. studdle, 10. pilot bushing, 11. leading screw reversers, 12. centering centralizers, 13. moving sliding sleeves.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of ball-screw switching mechanism that is used for down-hole oil production, comprise ball-screw 5, ball-screw 5 is fixed on the outer tube 2 by rolling bearing 1 and pilot bushing 10, be provided with block bead device 3, compression spring 4, ball-returning device 8, ball nut 7 and moving sliding sleeve 13 in the outer tube 2 successively, be provided with ball in the ball nut 7, ball nut 7 outsides link to each other with pilot bushing 10 by flat key 6, pilot bushing 10 inboards are provided with centering centralizer 12, centering centralizer 12 inboards are provided with moving sliding sleeve 13, and ball-screw 5 upper ends are provided with studdle 9 and leading screw reverser 11 successively.
As a kind of preferred, ball nut 7 outsides link to each other with pilot bushing 10 by flat key 6.
As a kind of preferred, centering centralizer 12 is connected with outer tube 2 by screw thread.
As a kind of preferred, the ball nut carrying number of turns is 10 circles, and ball diameter is 7.144mm.
As a kind of preferred, rolling bearing is the combination bearing of thrust ball bearing and needle roller thrust bearing.
The utility model utilizes ball-screw that motor is rotatablely moved and is converted to rectilinear motion and drives oil well pump and back and forth move up and down, and realizes the purpose of recovering the oil, the transmission efficiency height, and overcome the problem of side-abrasion of rod string.
A kind of preferred embodiment that is used for the ball-screw switching mechanism of down-hole oil production of the utility model, ball-screw 5 is fixed on the outer tube 2 by rolling bearing 1 and pilot bushing 10, and can be around self axis rotation under driven by motor.In outer tube 2, compression spring 4 is fixed on ball screw 5 lower ends to block bead device 3 by screw, studdle 9 and leading screw reverser 11 by screw in ball-screw 5 upper ends, and rotation under ball-screw drives.On ball nut 7, match with pilot bushing 10 by flat key 6 by ball nut 7 outsides by screw for ball-returning device 8, and ball nut 7 does reciprocating linear motion under the restriction of pilot bushing 10.Ball nut 7 upper ends and moving sliding sleeve 13 are connected by spline, and moving sliding sleeve 13 does reciprocating linear motion under ball nut 7 drives.Centering centralizer 12 is located at the outside of moving sliding sleeve 13, and centering centralizer 12 is connected with outer tube 2 by screw thread.The ball nut 7 carrying number of turns are 10 circles, and ball diameter is 7.144mm, and the ball-screw dynamic load rating is big.The combination bearing of preferred thrust ball bearing of rolling bearing and needle roller thrust bearing.
The utility model course of work: ball-screw rotates under the drive of motor, because the axial revolution degree of freedom of ball nut is directed to the lining restriction, make ball nut on ball-screw, carry out straight reciprocating motion, drive the moving sliding sleeve straight reciprocating motion simultaneously, moving sliding sleeve drive oil well pump pumps and realizes recovering the oil.
The utility model is particularly useful for the producing well that rod and tube partial-wear easily takes place for directional well, inclined shaft etc.Has the advantage that energy consumption is low, transmission efficiency is high, rod tube is difficult for eccentric wear.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. ball-screw switching mechanism that is used for down-hole oil production, it is characterized in that, comprise ball-screw, described ball-screw is fixed on the outer tube by rolling bearing and pilot bushing, be provided with the block bead device in the described outer tube successively, the compression spring, ball-returning device, ball nut and moving sliding sleeve, be provided with ball in the described ball nut, the described ball nut outside links to each other with pilot bushing by flat key, described pilot bushing inboard is provided with the centering centralizer, described centering centralizer inboard is provided with described moving sliding sleeve, and described ball-screw upper end is provided with studdle and leading screw reverser successively.
2. the ball-screw switching mechanism that is used for down-hole oil production according to claim 1 is characterized in that, described block bead device by screw in described outer tube.
3. the ball-screw switching mechanism that is used for down-hole oil production according to claim 1 is characterized in that described compression spring is fixed on the ball screw lower end.
4. the ball-screw switching mechanism that is used for down-hole oil production according to claim 1 is characterized in that, described ball-returning device by screw on described ball nut.
5. the ball-screw switching mechanism that is used for down-hole oil production according to claim 1 is characterized in that, described ball nut upper end connects described moving sliding sleeve by spline.
6. the ball-screw switching mechanism that is used for down-hole oil production according to claim 1 is characterized in that described centering centralizer is connected with described outer tube by screw thread.
7. according to each described ball-screw switching mechanism that is used for down-hole oil production of claim 1-6, it is characterized in that the described ball nut carrying number of turns is 10 circles, the diameter of described ball is 7.144mm.
8. the ball-screw switching mechanism that is used for down-hole oil production according to claim 7 is characterized in that: described rolling bearing is the combination bearing of thrust ball bearing and needle roller thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205125674U CN201835796U (en) | 2010-08-31 | 2010-08-31 | Ball screw switching mechanism for underground oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205125674U CN201835796U (en) | 2010-08-31 | 2010-08-31 | Ball screw switching mechanism for underground oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835796U true CN201835796U (en) | 2011-05-18 |
Family
ID=44005902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205125674U Expired - Lifetime CN201835796U (en) | 2010-08-31 | 2010-08-31 | Ball screw switching mechanism for underground oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266313A (en) * | 2021-02-25 | 2021-08-17 | 大庆虹铭科技有限公司 | Direct-drive roller screw oil production device |
-
2010
- 2010-08-31 CN CN2010205125674U patent/CN201835796U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266313A (en) * | 2021-02-25 | 2021-08-17 | 大庆虹铭科技有限公司 | Direct-drive roller screw oil production device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
|
| CX01 | Expiry of patent term |