CN204457484U - Sucker rod eccentric wear prevention device and sucker rod thereof - Google Patents
Sucker rod eccentric wear prevention device and sucker rod thereof Download PDFInfo
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- CN204457484U CN204457484U CN201420844605.4U CN201420844605U CN204457484U CN 204457484 U CN204457484 U CN 204457484U CN 201420844605 U CN201420844605 U CN 201420844605U CN 204457484 U CN204457484 U CN 204457484U
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- sucker rod
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- 230000002265 prevention Effects 0.000 title abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims description 40
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000003129 oil well Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The application discloses sucker rod eccentric wear prevention device and sucker rod thereof, a sucker rod eccentric wear prevention device includes: the rotating part can be arranged on the sucker rod and comprises a lengthways extending main body which can be fixedly sleeved on the sucker rod and a rotating blade arranged on the main body, wherein the rotating blade can generate rotating force for rotating the rotating part around the axis of the main body under the action of liquid flowing along the lengthways extending direction of the main body; the two ends of the rotary connecting piece are used for connecting the sucker rod, and the rotary connecting piece comprises a first connecting piece used for connecting the sucker rod and a second connecting piece rotationally connected with the first connecting piece; the second connecting piece is used for connecting the sucker rod provided with the rotating piece. The application provides an imitative eccentric wear device of sucker rod can set up the optional position at the sucker rod according to operating condition, and then does not increase oil well manufacturing cost when reducing the sucker rod because of taking place the probability of breaking off with oil pipe eccentric wear.
Description
Technical field
The application relates to the oil tool in rod-pumped well sucker rod pump hoisting system, particularly relates to a kind of bias-wearing-proof apparatus of pumping rod and sucker rod thereof.
Background technology
In oilfield development process, along with going deep into of exploitation, the degree of depth of oil well is in continuous intensification.What oil well had reaches thousands of rice deeply, and what have becomes inclined shaft or horizontal well.When carrying out pumping operation, sucker rod pumps in oil pipe, and sucker rod outer wall easily contacts with oil pipe inside and produces eccentric wear, and this eccentric wear easily damages oil pipe and sucker rod.Can be there is oil pipe leakage in Tubing failure, and need to change oil pipe, can increase oil well fund input like this; Sucker rod easily occurs disconnected de-after being subject to eccentric wear, fall in well, production development accident, and then cause greater loss to the economy in oil field.
Current rod string eccentric abrasion prevention device adopts mostly installs centralizer on rod collar.Centralizer is arranged between the sucker rod section of adjacent connection, and its external diameter is greater than the external diameter of tubing coupling, sucker rod and oil pipe is separated, and then makes sucker rod be positioned at the axial location of oil pipe.Centralizer comparatively sucker rod first contacts with oil pipe, and then the power of the sucker rod that originally rubs is become the power of friction centralizer, alternatively protects rod collar by oil pipe friction centralizer and does not rub by oil pipe.
Existing centralizer can only be located between adjacent two sucker rods in use, and the optional position of sucker rod can not be arranged on according to working condition, and then in order to prevent a certain position of the body of rod of sucker rod from eccentric wear occurring, at present can only by increasing the quantity of centralizer, eccentric wear is there is to avoid sucker rod to contact with oil pipe as far as possible, although this method reduce sucker rod because of with oil pipe eccentric wear and disconnected de-probability occurs, add oil well production cost.
Utility model content
In view of the deficiencies in the prior art, the application provides a kind of sucker rod that can be arranged on the optional position of sucker rod according to working condition to imitate eccentric wearing device, with reduce sucker rod because of with oil pipe eccentric wear and do not increase oil well production cost while there is disconnected de-probability.
A kind of bias-wearing-proof apparatus of pumping rod that the application provides, comprising:
The tumbler on sucker rod can be located at, it comprises and can be located at main body that lengthwise on sucker rod extends and establishing rotating vane on the body by fixed cover, and described rotating vane can produce the rotatory force that described tumbler is rotated around described main body axis under the effect of the liquid along described main body lengthwise bearing of trend flowing;
Two ends are used for the rotating connector of connecting with pumping rod, and it comprises for the first connector of connecting with pumping rod and the second connector of being rotationally connected with described first connector; Described second connector is for being connected with the sucker rod of described tumbler.
Preferably, described first connector is provided with the passage run through along described main body lengthwise bearing of trend, and described first connector has by the first end of described channel connection and the second end; Described first end is provided with the box cupling for connecting with pumping rod; One end of described second connector is stretched in described passage by described second end, and the part that described second connector stretches into described passage is rotationally connected with the wall of described passage.
Preferably, internal diameter near described second end place in described passage reduces formation first step, the outer wall that described second connector stretches into the part of described passage radially expands formation second step, is provided with rolling member between described first step and described second step.
Preferably, the distance at 0.5 millimeter to 1 millimeter, interval between the outer wall stretching into described channel part of described second connector and the wall of described passage.
Preferably, described box cupling is provided with external screw thread away from one end of described first connector; One end be positioned at outside described passage of described second connector is provided with external screw thread.
Preferably, described rotating vane is for extend spirally along described main body lengthwise bearing of trend.
Preferably, the quantity of described rotating vane is multiple.
Preferably, described rotating vane is uniformly distributed in the circumference of described main body.
The application also provides a kind of sucker rod, comprises rotational segment, nonrotational section and bias-wearing-proof apparatus of pumping rod as above; Described rotational segment is connected by the rotating connector of described bias-wearing-proof apparatus of pumping rod with described nonrotational section, and the first connector of described rotating connector connects described nonrotational section, and the second connector of described rotating connector connects described rotational segment; Described rotational segment fixed sleeves is provided with the tumbler of described bias-wearing-proof apparatus of pumping rod.
Preferably, described rotational segment is axially arranged with multiple described tumbler along it.
By above description, can find out that the bias-wearing-proof apparatus of pumping rod that the application provides passes through described rotating connector to engage with described tumbler, and, described tumbler can be arranged on the optional position of the body of rod of sucker rod according to the working condition of sucker rod, need to reduce sucker rod because of with oil pipe eccentric wear and there is disconnected de-probability time, only need the number increasing described tumbler in sucker rod generation eccentric wear region, so use the bias-wearing-proof apparatus of pumping rod that provides of the application can reduce sucker rod because of with oil pipe eccentric wear and do not increase oil well production cost while there is disconnected de-probability.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the bias-wearing-proof apparatus of pumping rod that provides of a kind of embodiment of the application and sucker rod oil pumping schematic diagram thereof;
Fig. 2 is the tumbler structural representation that the application's embodiment provides;
Fig. 3 is the rotating connector structural representation that the application's embodiment provides;
Fig. 4 is the schematic diagram of the rolling member of the rotating connector that the application's embodiment provides.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of the utility model protection.
Please refer to Fig. 1, a kind of embodiment of the application provides a kind of sucker rod 200 eccentric abrasion prevention device, comprise: the tumbler 1 on sucker rod 200 can be located at, it comprises and can be located at the main body 11 that the lengthwise on sucker rod 200 extends and the rotating vane 12 be located in described main body 11 by fixed cover, and described rotating vane 12 can produce the rotatory force that described tumbler 1 is rotated around described main body 11 axis under the effect of the liquid along described main body 11 lengthwise bearing of trend flowing; Two ends are used for the rotating connector 2 of connecting with pumping rod 200, and it comprises for the first connector 21 of connecting with pumping rod 200 and the second connector 22 of being rotationally connected with described first connector 21; Described second connector 22 is for being connected with the sucker rod 200 of described tumbler 1.
During use, the position that the eccentric wear of whole sucker rod 200 is more serious is learnt according to the means of production of oil well and sucker rod 200 real work situation, be positioned at the two ends that eccentric wear compares the sucker rod 200 of critical regions and described rotating connector 2 is set respectively, and tumbler 1 described at least one is set described being positioned on the body of rod that eccentric wear compares the sucker rod 200 of critical regions, and then whole sucker rod 200 is divided into rotational segment 202 and nonrotational section 201, described rotational segment 202 is the comparatively serious position of eccentric wear.Then according to shown in Fig. 1, the sucker rod of the sucker rod 200 eccentric abrasion prevention device provided in conjunction with present embodiment is entered in oil pipe 100 for 200 times to carry out pumping operation.This sucker rod 200 is in oil pumping process; this sucker rod 200 pumps; because rotational segment 202 is provided with described tumbler 1; the body of rod of described sucker rod 200 and described oil pipe 100 separate by described tumbler 1; and then can effectively prevent sucker rod 200 from eccentric wear occurring in sucker rod 200 oil pumping process, more comprehensively protect sucker rod 200.Meanwhile, fluid upwards flows along described oil pipe 100 track at sucker rod 200.Described fluid is when the rotational segment 202 of this sucker rod 200, fluid flows through described tumbler 1 and produces a rotatory force to described rotating vane 12, this rotatory force makes described tumbler 1 rotate around described main body 11 axis, and then described tumbler 1 drives the sucker rod 200 of described rotational segment 202 to rotate, and then make described tumbler 1 transfer rolling friction to the sliding friction of described oil pipe 100 inwall, and then the friction effectively reduced between described tumbler 1 and described oil pipe 100, reduce oil pipe 100 inwall to the eccentric wear effect of described sucker rod 200 eccentric abrasion prevention device.
By above description, can find out that the sucker rod 200 eccentric abrasion prevention device that present embodiment provides passes through described rotating connector 2 to engage with described tumbler 1, and, described tumbler 1 can be arranged on the optional position of the body of rod of sucker rod 200 according to the working condition of sucker rod 200, need to reduce sucker rod 200 because of with oil pipe 100 eccentric wear and there is disconnected de-probability time, only need, at sucker rod 200, the number that eccentric wear region increases described tumbler 1 occurs, so use the sucker rod 200 eccentric abrasion prevention device that provides of present embodiment can reduce sucker rod 200 because of with oil pipe 100 eccentric wear and do not increase oil well production cost while there is disconnected de-probability.
Simultaneously, because described tumbler 1 can drive the described rotational segment 202 of described sucker rod 200 to rotate together when fluid flows through, and then the friction that can effectively reduce between described tumbler 1 and described oil pipe 100, make the eccentric wear effect of oil pipe 100 inwall to described sucker rod 200 eccentric abrasion prevention device less, and then whole described sucker rod 200 eccentric abrasion prevention device can have longer application life, and it is less for the rubbing action of oil pipe 100, contribute to the application life extending oil pipe 100, substantially prolongs pump detection period.Further, because the frictional force between oil pipe 100 and described tumbler 1 is less, power when described sucker rod 200 is up and down reciprocatingly pumped is less, effectively can reduce the operation cost of whole pumping unit.
Please refer to Fig. 2, described tumbler 1 entirety is class turbine structure, and described rotating vane 12 is located on the sidewall of described main body 11.Consider described tumbler 1 its Main Function when preventing described sucker rod 200 from eccentric wear occurring, described tumbler 1 can possess certain pliability simultaneously, to alleviate the friction to oil pipe 100, consider based on this kind, the material of described tumbler 1 can be made with High Strength Wear-Resistance Material, concrete can adopt macromolecule plastic material, such as abrasive rubber.Described tumbler 1 can be arranged on the optional position of sucker rod 200 body of rod, and then adapts to sucker rod 200 eccentric wear position preferably, reduces the probability that sucker rod 200 eccentric wear occurs.Described tumbler 1 is whole to be located on sucker rod 200 for fixed cover, in a specific embodiment, described tumbler 1 can direct pouring on the body of rod outer wall of sucker rod 200, and then be fixed as one with sucker rod 200, certainly, described tumbler 1 can also grind on the body of rod of sucker rod 200 by special grinding tool, the application is not as limit.
Described main body 11 entirety is tubular, and it provides attachment place for described rotating vane 12.Described rotating vane 12 can for extend spirally along described main body 11 lengthwise bearing of trend.The quantity of described rotating vane 12 can be multiple.Further, described rotating vane 12 is uniformly distributed in the circumference of described main body 11.Figure 2 shows that example, the quantity of described rotating vane 12 is three and is evenly distributed on the circumference of described main body 11, rotating vane 12 described in every sheet is and extends spirally along described main body 11 lengthwise bearing of trend, and then at fluid through described rotating vane 12 both sides, fluid produces towards the active force of side for described rotating vane 12, there is an arm of force relative to the axis of described main body 11 in this active force, and then forms turning moment, and described tumbler 1 is rotated around the axis of described main body 11.Certainly, the scheme that above-mentioned embodiment provides is only explains that described tumbler 1 acts on and forms, it is only a part of embodiment of the distribution of described rotating vane 12 in described main body 11, those skilled in the art should learn, described rotating vane 12 has multiple with the combination of described main body 11, and the application is not as limit.
Described rotating connector 2 is for coupling together by the rotational segment 202 of whole sucker rod 200 with nonrotational section 201 and realize the rotatable of rotational segment 202.Described tumbler 1 have back to two ends, these two ends are used for connecting with pumping rod 200, namely connect described rotational segment 202 and described nonrotational section 201.These two ends are respectively one end of described first connector 21 and described second connector 22.By being rotationally connected between described first connector 21 and described second connector 22.
Please refer to Fig. 3, in an embodiment of present embodiment, described first connector 21 can be provided with the passage 24 run through along described main body 11 lengthwise bearing of trend.The entirety of described passage 24 can be cylindrical, and its wall can be provided with screw thread.Described first connector 21 has the first end 23 and the second end 25 that are communicated with by described passage 24.Described first end 23 is provided with the box cupling 29 for connecting with pumping rod 200.One end of described second connector 22 is stretched in described passage 24 by described second end 25.The part that described second connector 22 stretches into described passage 24 is rotationally connected with the wall of described passage 24.
Described first end 23 can be provided with internal thread, and then connects described box cupling 29.Described box cupling 29 entirety is tube-shaped structure, and its exposed one end also can be provided with external screw thread, to connect other sucker rods 200 (sucker rod 200 of nonrotational section 201) for the one end away from described first connector 21.Described second connector 22 entirety is the body of rod, and it can rotate relative to described first connector 21 under the drive of described tumbler 1.Concrete, one end be positioned at outside described passage 24 of described second connector 22 can be provided with external screw thread, realizes being connected with one end of described rotational segment 202 by this external screw thread.
Further, internal diameter near described second end 25 place in described passage 24 can reduce and form first step 26, the outer wall that described second connector 22 stretches into the part of described passage 24 radially can expand formation second step 27, is provided with rolling member 28 between described first step 26 and described second step 27.Please refer to Fig. 4, described rolling member 28 can be ball, can certainly be cylindrical roller, and the application is not as limit, as long as described rolling member 28 can form relative rolling by between described first step 26 with described second step 27.Described first step 26 and described second step 27 are change place of diameter, described first step 26 is the internal diameter contraction place of described passage 24, described second step 27 is the enlarged outside diameter place stretching into described passage 24 part of described second connector 22, makes the outer wall hatching of the inwall of described first connector 21 and described second connector 22 be stairstepping by described first step 26 with described second step 27.Further, smooth for ensureing the rotation of described second connector 22, can the distance at 0.5 millimeter to 1 millimeter, interval between the outer wall stretching into described passage 24 part of described second connector 22 and the wall of described passage 24.
Please continue to refer to Fig. 1, a kind of embodiment of the application also provides a kind of sucker rod 200, comprises rotational segment 202, nonrotational section 201 and sucker rod 200 eccentric abrasion prevention device described above; Described rotational segment 202 is connected with the rotating connector 2 of described nonrotational section 201 by described sucker rod 200 eccentric abrasion prevention device, first connector 21 of described rotating connector 2 connects described nonrotational section 201, and the second connector 22 of described rotating connector 2 connects described rotational segment 202; Described rotational segment 202 fixed sleeves is provided with the tumbler 1 of described sucker rod 200 eccentric abrasion prevention device.Further, described rotational segment 202 is axially arranged with multiple described tumbler 1 along it.
Whole sucker rod 200 is formed by connecting in turn by more piece sucker rod section, realizes connecting between adjacent sucker rod section by box cupling 203.The eccentric wear of whole sucker rod 200 comparatively can be isolated the described rotational segment 202 of formation in critical regions, and realize its rotation by described tumbler 1.Described rotational segment 202 and described nonrotational section 201 all may comprise sucker rod section described in more piece, still connected by box cupling 203 between described sucker rod section in described rotational segment 202 and described nonrotational section 201 region, when described rotational segment 202 is connected with described nonrotational section 201, described rotational segment 202 is connected by described rotating connector 2 with described nonrotational section 201.The body of rod optional position of the sucker rod section in described rotational segment 202 can be provided with described tumbler 1, and the quantity of tumbler 1 is more, and its rotatory force provided is larger.
During use, the position that the eccentric wear of whole sucker rod 200 is more serious is learnt according to the means of production of oil well and sucker rod 200 real work situation, be positioned at the two ends that eccentric wear compares the sucker rod 200 of critical regions and described rotating connector 2 is set respectively, and tumbler 1 described at least one is set described being positioned on the body of rod that eccentric wear compares the sucker rod 200 of critical regions, and then whole sucker rod 200 is divided into rotational segment 202 and nonrotational section 201, described rotational segment 202 is the comparatively serious position of whole sucker rod 200 eccentric wear.Then according to shown in Fig. 1, the sucker rod of the sucker rod 200 eccentric abrasion prevention device provided in conjunction with present embodiment is entered in oil pipe 100 for 200 times to carry out pumping operation.This sucker rod 200 is in oil pumping process; this sucker rod 200 pumps; because rotational segment 202 is provided with described tumbler 1; the body of rod of described sucker rod 200 and described oil pipe 100 separate by described tumbler 1; and then can effectively prevent sucker rod 200 from eccentric wear occurring in sucker rod 200 oil pumping process, more comprehensively protect sucker rod 200.Meanwhile, fluid upwards flows along described oil pipe 100 track at sucker rod 200.Described fluid is when the rotational segment 202 of this sucker rod 200, fluid flows through described tumbler 1 and produces a rotatory force to described rotating vane 12, this rotatory force makes described tumbler 1 rotate around described main body 11 axis, and then described tumbler 1 drives the sucker rod 200 of described rotational segment 202 to rotate, and then make described tumbler 1 transfer rolling friction to the sliding friction of described oil pipe 100 inwall, and then the friction effectively reduced between described tumbler 1 and described oil pipe 100, reduce oil pipe 100 inwall to the eccentric wear effect of described sucker rod 200 eccentric abrasion prevention device.
An embody rule embodiment below by present embodiment explains sucker rod 200 principle that present embodiment provides in detail, but the application is not limited with content described by this this embodiment.
First, the more serious position of sucker rod 200 eccentric wear in oil well can be calculated by data such as wellbore trajectories, and these positions of calculating are enter position under which root sucker rod section further, the present embodiment is with the 50 to 60 (for the innermost sucker rod Duan Wei of oil well 1) sucker rod section, under enter whole sucker rod 200 time, a described rotating connector 2 is connected in the upper end of the 49th sucker rod section, the connection with the 50th sucker rod section is realized by the 49th sucker rod section described in this rotating connector 2, 50 to 60 is connected successively by box cupling 203, simultaneously, the body of rod of the sucker rod 200 of the 50 to 60 is provided with 5 described tumblers 1.Be provided with rotating connector 2 described in when the 60th sucker rod section connects the 61st sucker rod section, after connection, connect other sucker rods 200.Can find out that whole sucker rod the 200, the 50 to 60 sucker rod section is described rotational segment 202, all the other are nonrotational section 201, can carry out pumping operation after connection.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. a bias-wearing-proof apparatus of pumping rod, is characterized in that, comprising:
The tumbler on sucker rod can be located at, it comprises and can be located at main body that lengthwise on sucker rod extends and establishing rotating vane on the body by fixed cover, and described rotating vane can produce the rotatory force that described tumbler is rotated around described main body axis under the effect of the liquid along described main body lengthwise bearing of trend flowing;
Two ends are used for the rotating connector of connecting with pumping rod, and it comprises for the first connector of connecting with pumping rod and the second connector of being rotationally connected with described first connector; Described second connector is for being connected with the sucker rod of described tumbler.
2. bias-wearing-proof apparatus of pumping rod as claimed in claim 1, it is characterized in that: described first connector is provided with the passage run through along described main body lengthwise bearing of trend, described first connector has by the first end of described channel connection and the second end; Described first end is provided with the box cupling for connecting with pumping rod; One end of described second connector is stretched in described passage by described second end, and the part that described second connector stretches into described passage is rotationally connected with the wall of described passage.
3. bias-wearing-proof apparatus of pumping rod as claimed in claim 2, it is characterized in that: the internal diameter near described second end place in described passage reduces formation first step, the outer wall that described second connector stretches into the part of described passage radially expands formation second step, is provided with rolling member between described first step and described second step.
4. bias-wearing-proof apparatus of pumping rod as claimed in claim 2, is characterized in that: the distance at 0.5 millimeter to 1 millimeter, interval between the outer wall stretching into described channel part of described second connector and the wall of described passage.
5. bias-wearing-proof apparatus of pumping rod as claimed in claim 2, is characterized in that: described box cupling is provided with external screw thread away from one end of described first connector; One end be positioned at outside described passage of described second connector is provided with external screw thread.
6. the bias-wearing-proof apparatus of pumping rod as described in claim 1 to 5 any one, is characterized in that: described rotating vane is for extend spirally along described main body lengthwise bearing of trend.
7. bias-wearing-proof apparatus of pumping rod as claimed in claim 6, is characterized in that: the quantity of described rotating vane is multiple.
8. bias-wearing-proof apparatus of pumping rod as claimed in claim 7, is characterized in that: described rotating vane is uniformly distributed in the circumference of described main body.
9. a sucker rod, is characterized in that: comprise rotational segment, nonrotational section and the bias-wearing-proof apparatus of pumping rod as described in claim 1 to 8 any one; Described rotational segment is connected by the rotating connector of described bias-wearing-proof apparatus of pumping rod with described nonrotational section, and the first connector of described rotating connector connects described nonrotational section, and the second connector of described rotating connector connects described rotational segment; Described rotational segment fixed sleeves is provided with the tumbler of described bias-wearing-proof apparatus of pumping rod.
10. sucker rod as claimed in claim 9, is characterized in that: described rotational segment is axially arranged with multiple described tumbler along it.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844605.4U CN204457484U (en) | 2014-12-26 | 2014-12-26 | Sucker rod eccentric wear prevention device and sucker rod thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844605.4U CN204457484U (en) | 2014-12-26 | 2014-12-26 | Sucker rod eccentric wear prevention device and sucker rod thereof |
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| CN204457484U true CN204457484U (en) | 2015-07-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563907A (en) * | 2014-12-26 | 2015-04-29 | 中国石油天然气股份有限公司 | Sucker rod eccentric wear prevention device and sucker rod thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563907A (en) * | 2014-12-26 | 2015-04-29 | 中国石油天然气股份有限公司 | Sucker rod eccentric wear prevention device and sucker rod thereof |
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