CN202391352U - Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop - Google Patents
Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop Download PDFInfo
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- CN202391352U CN202391352U CN2011205745313U CN201120574531U CN202391352U CN 202391352 U CN202391352 U CN 202391352U CN 2011205745313 U CN2011205745313 U CN 2011205745313U CN 201120574531 U CN201120574531 U CN 201120574531U CN 202391352 U CN202391352 U CN 202391352U
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- roller
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- connecting hoop
- eccentric
- erection device
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Abstract
The utility model relates to a rotatable type anti-eccentric-wear oil-sucking rod connecting hoop, and belongs to an oil recovery technology of a sucker-rod pump in an oil field. The rotatable type anti-eccentric-wear oil-sucking rod connecting hoop is characterized in that an aligning ball bearing 2 is arranged between a connecting hoop main body 3 and a centering device 4, and is axially fixed on the connecting hoop main body 3 by using a thrust ring 1; an upper set of roller group and a lower set of roller group are arranged on the centering device 4; three roller devices, which are arranged at a 120-degree interval angle in the peripheral direction, are arranged on each set of the roller group; two sets of roller groups with six roller devices in total on the centering device 4 are arranged in the peripheral direction at a 60-degree staggered angle; and each roller device consists of an ear seat 7, a pin 6 and a roller 5, wherein the ear seat 7 is welded on the centering device 4, the roller 5 and the ear seat 7 are connected by the pin 6, and the roller 5 can rotate around the pin 6. The rotatable type anti-eccentric-wear oil-sucking rod connecting hoop has the advantages that the sliding friction between the traditional oil-sucking rod connecting hoop and an oil pipe is converted into rolling friction, the friction form is changed essentially, and the eccentric wear problem can be effectively solved.
Description
Technical field
The utility model relates to the used rod collar of oil field sucker rod pumping technical field, the rod collar that especially has anti-eccentric wear function.
Background technology
In the oil recovery technique of oil field, sucker rod pumping is still main method, and the drive unit on ground is done in the oil pipe pump barrel through sucker rod drive oil well pump and pumped, thereby crude oil is pumped into ground.Owing to factors such as load instabilities on the sucker rod in bending of well section and the up-down stroke; Sucker rod or rod collar be easy and tube inner wall generation eccentric wear in the process of pumping; Cause sucker rod or rod collar wear and rupture; Even cause pipeline rupture, causing oil well to be closed needs maintenance, brings for the production of recovering the oil and has a strong impact on.At present; There have been the centralizer of some band rubber sleaves, the rod collar of band wear-resistant coating to solve this problem; But these methods all do not change the essence of sliding friction; Cause still existing between rod collar device and oil pipe eccentric wear, the phenomenons such as resistance is big that pump, not from solving the eccentric wear problem in essence.
Summary of the invention
In order to solve the eccentric wear problem between existing rod collar and oil pipe, the utility model has designed a kind of rotary type eccentric wear prevention pumping rod box cupling.
The technical scheme of the utility model design: rotary type eccentric wear prevention pumping rod box cupling comprises box cupling main body and erection device; 2 self-aligning ball bearings are equipped with at two ends between box cupling main body and the erection device; Erection device has 2 cover roller set up and down; Every cover roller set has 3 at the 120 ° of equally distributed roller devices in space that make progress in erection device week; The roller devices of 2 cover roller set upwards staggers 60 ° each other in week up and down, and erection device and self-aligning ball bearing are by the thrust ring axial restraint at box cupling main body two ends.
The beneficial effect of the utility model: rotary type eccentric wear prevention pumping rod box cupling is owing to be equipped with self-aligning ball bearing between box cupling main body and the erection device; Therefore erection device can solderless wrapped connection hoop main body circumferentially rotate and axial deflection, can avoid sucker rod or rod collar to twist and circumferential eccentric wear; Roller set is arranged on the erection device; Roller can roll along tube inner wall; Therefore can the sliding friction that have now between rod collar and oil pipe be converted into rolling friction, reduce friction factor widely, can effectively solve the eccentric wear problem between rod collar and oil pipe.The utility model project organization is fairly simple, installs and convenient disassembly, and skimming wear is little, long service life.
Description of drawings
Fig. 1 is the full sectional view of the utility model structure.
Fig. 2 is the vertical view of the utility model structure.
Fig. 3 is the A-A sectional view on Fig. 1.
Fig. 4 is that P on Fig. 2 is to partial view.
1-thrust ring among the figure, 2-self-aligning ball bearing, 3-box cupling main body, 4-erection device, 5-roller, 6-pin, 7-ear seat.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further specified.
As shown in Figure 1; This rotary type eccentric wear prevention pumping rod box cupling comprises box cupling main body 3 and erection device 4; Two self-aligning ball bearings 2 are equipped with at two ends between box cupling main body 3 and erection device 4, are interference fit between box cupling main body 3 and erection device 4 and the self-aligning ball bearing 2, at the two ends of box cupling main body 3 with two thrust rings 1 with erection device 4 and two self-aligning ball bearing 2 axial restraints; Adopt between thrust ring 1 and the box cupling main body 3 to be threaded, 2 cover roller set are up and down arranged on erection device 4.As shown in Figure 3, every cover roller set has 3 at the roller devices of 120 ° of spaces that makes progress in week.As shown in Figure 2, totally 6 roller devices of the cover of 2 on the erection device 4 roller set upwards staggers 60 ° each other in week.As shown in Figure 4, roller devices is made up of ear seat 7, pin 6 and roller 5, and ear seat 7 is welded on the erection device 4, and pin 6 couples together roller 5 and ear seat 7, and roller 5 can rotate around pin 6.
In such scheme, the cover of 2 on the erection device 4 roller set can also be a consistency from top to bottom, and promptly on vertical view, the projection of 2 cover roller set is corresponding up and down overlaps.
Because two self-aligning ball bearings 2 are equipped with at two ends between box cupling main body 3 and the erection device 4, so erection device 4 ability solderless wrapped connection hoop main bodys 3 circumferential rotations and axial deflection, can avoid sucker rod or rod collar to twist and circumferential eccentric wear; Roller 5 on the erection device 4 can roll along tube inner wall; Therefore can the sliding friction that have now between rod collar and oil pipe be converted into rolling friction; From having changed friction type in essence, reduced friction factor widely, the resistance that pumps reduces; And then can effectively solve the eccentric wear problem between rod collar and oil pipe, reach purpose of design.
Claims (3)
1. rotary type eccentric wear prevention pumping rod box cupling; It is characterized in that 2 self-aligning ball bearings (2) are equipped with at two ends between box cupling main body (3) and the erection device (4); Self-aligning ball bearing (2) is fixed on the two ends of box cupling main body (3) with thrust ring (1); Up and down 2 cover roller set are arranged on erection device (4), and every cover roller set has 3 at the roller devices of 120 ° of spaces that makes progress in week, and totally 6 roller devices of the cover of 2 on the erection device (4) roller set upwards staggers 60 ° each other in week; Roller devices is made up of ear seat (7), pin (6) and roller (5); Ear seat (7) is welded on the erection device (4), and pin (6) couples together roller (5) and ear seat (7), and roller (5) can rotate around pin (6).
2. rotary type eccentric wear prevention pumping rod box cupling according to claim 1 is characterized in that adopting between thrust ring (1) and the box cupling main body (3) being threaded erection device (4) and two self-aligning ball bearings (2) axial restraint.
3. rotary type eccentric wear prevention pumping rod box cupling according to claim 1 is characterized in that the cover of 2 on the erection device (4) roller set can also be a consistency from top to bottom, and promptly on vertical view, the projection of 2 cover roller set is corresponding up and down overlaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745313U CN202391352U (en) | 2011-12-27 | 2011-12-27 | Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745313U CN202391352U (en) | 2011-12-27 | 2011-12-27 | Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391352U true CN202391352U (en) | 2012-08-22 |
Family
ID=46666283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205745313U Expired - Fee Related CN202391352U (en) | 2011-12-27 | 2011-12-27 | Rotatable type anti-eccentric-wear oil-sucking rod connecting hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943635A (en) * | 2012-11-21 | 2013-02-27 | 中国石油大学(北京) | Diameter-changing and friction-reducing drill column centralizer |
-
2011
- 2011-12-27 CN CN2011205745313U patent/CN202391352U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943635A (en) * | 2012-11-21 | 2013-02-27 | 中国石油大学(北京) | Diameter-changing and friction-reducing drill column centralizer |
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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: 20120822 Termination date: 20121227 |