CN212337183U - Sucker rod coupling - Google Patents
Sucker rod coupling Download PDFInfo
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- CN212337183U CN212337183U CN202020191030.6U CN202020191030U CN212337183U CN 212337183 U CN212337183 U CN 212337183U CN 202020191030 U CN202020191030 U CN 202020191030U CN 212337183 U CN212337183 U CN 212337183U
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Abstract
The application discloses sucker rod coupling includes: the device comprises a pressing cap, a supporting mandrel and a ball assembly; a first groove is formed in the pressing cap, one end of the supporting mandrel is axially connected into the first groove, and the other end of the supporting mandrel extends out in the direction far away from the pressing cap; a second groove is formed in the inner part of one end, relatively far away from the pressing cap, of the supporting mandrel; one end of the pressing cap, which is far away from the first groove, is used for connecting a sucker rod, and the second groove is used for connecting the sucker rod; the ball assembly includes: the ball bearing comprises a ball bearing frame arranged in a circular shape and a plurality of balls arranged on the ball bearing frame; one end of the ball frame is connected with the pressing cap and sleeved outside the supporting mandrel; a ball chamber for accommodating balls is arranged between the ball frame and the support mandrel; the balls are used for bearing friction. The device can fully reduce the degree of moving abrasion of the contact part between the oil pipe and the sucker rod in the production process, reduce abrasion resistance, save energy consumption, prolong the pump inspection period, save cost and improve production efficiency.
Description
Technical Field
The present disclosure relates generally to the field of petroleum machinery, and more particularly to a sucker rod coupling.
Background
At present, in domestic petroleum and coal bed gas drainage and production wells, well deviation (or horizontal well section) can affect a sucker rod string which moves up and down in the production process, so that the contact part of an oil pipe and the sucker rod is relatively seriously worn (or eccentrically worn), the phenomena of eccentric wear, breaking off, wearing through of the oil pipe and the like of the sucker rod are caused, and the pump inspection period is seriously shortened. In the prior art, various centralizers or oil pipe built-in linings can be additionally arranged on a sucker rod string, but the problems of relative abrasion of the oil pipe string and the like cannot be fundamentally and completely solved, and the abrasion resistance of the downward movement of the sucker rod string is increased, so that the energy consumption is increased. In addition, due to the influence of the inclined abrasion resistance of a well or the viscous force of thick oil, part of torque force generated in the up-and-down motion of the sucker rod string can not be transmitted and released in time, so that the tripping of a sucker rod joint near the neutral point of the sucker rod string is caused, the repeated operation is caused, the cost is increased, and the normal production is seriously influenced.
Disclosure of Invention
In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a sucker rod coupling.
A sucker rod coupling is characterized in that: the method comprises the following steps: the device comprises a pressing cap, a supporting mandrel and a ball assembly; a first groove is formed in the pressing cap, one end of the supporting mandrel is axially connected into the first groove, and the other end of the supporting mandrel extends out in the direction far away from the pressing cap; a second groove is formed in the inner part of one end, relatively far away from the pressing cap, of the supporting mandrel; one end of the pressing cap, which is far away from the first groove, is used for connecting a sucker rod, and the second groove is used for connecting the sucker rod; the ball assembly includes: the ball bearing comprises a ball bearing frame arranged in a circular shape and a plurality of balls arranged on the ball bearing frame; one end of the ball frame is connected with the pressing cap and sleeved outside the supporting mandrel; a ball chamber for accommodating balls is arranged between the ball frame and the support mandrel; the balls are used for bearing friction.
According to the technical scheme that this application embodiment provided, press the cap to be the cylinder, press the cap to keep away from one end upper surface of first recess relatively and be equipped with the screw thread, and be used for connecting the sucker rod.
According to the technical scheme that this application embodiment provided, the support dabber is the cylinder, the support dabber with press cap threaded connection, be equipped with the screw thread in the second recess.
According to the technical scheme provided by the embodiment of the application, a plurality of horizontal balls and vertical balls are respectively arranged on the ball frame.
According to the technical scheme provided by the embodiment of the application, the diameter of one end, which is relatively far away from the first groove, of the pressing cap is smaller than that of one end provided with the groove.
According to the technical scheme provided by the embodiment of the application, the outer side wall of one end, which is relatively far away from the pressing cap, of the supporting mandrel is connected with the ball frame.
According to the technical scheme provided by the embodiment of the application, the ball is fixed on the ball frame through a screw.
In summary, according to the technical scheme of the application, sliding friction is converted into rolling friction by arranging the ball assembly, so that abrasion between the coupling and the inner wall of the oil pipe is relieved; when the device is used, the sucker rod reciprocates up and down in the oil pipe to drive the device to move up and down, wherein only a plurality of balls are in contact with the inner wall of the oil pipe and roll, so that the friction force is reduced; the material is made of tensile-resistant stainless steel materials with super wear resistance, sulfur resistance, corrosion resistance and the like, so that the performances of wear resistance and the like are enhanced, and the service life is prolonged; through the technical means, the device can fully reduce the degree of moving abrasion of the contact part between the oil pipe and the sucker rod in the production process, better solve or slow down the eccentric wear or tripping phenomenon of the oil pipe in the production process, reduce wear resistance and save energy consumption, and can release the torque of the sucker rod string in time, prevent the tripping of the sucker rod, prolong the pump checking period, save cost and improve production efficiency.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of the present application;
fig. 2 is a schematic view of a ball assembly of the present application.
Reference numbers in the figures: 1. pressing the cap; 2. a support mandrel; 3. a first groove; 4. a second groove; 5. a ball rack; 6. and a ball.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
A sucker rod coupling comprising: the device comprises a pressing cap 1, a supporting mandrel 2 and a ball assembly; a first groove 3 is formed in the pressure cap 1, one end of the support mandrel 2 is axially connected into the first groove 3, and the other end of the support mandrel extends out in the direction far away from the pressure cap 1; a second groove 4 is formed in one end, relatively far away from the pressing cap 1, of the supporting mandrel 2; one end, far away from the first groove 3, of the pressing cap 1 is used for being connected with a sucker rod, and the second groove 4 is used for being connected with the sucker rod;
the ball assembly includes: the ball frame 5 is arranged in a circular shape, and the balls 6 are arranged on the ball frame 5; one end of the ball frame 5 is connected with the pressing cap 1 and sleeved outside the support mandrel 2; a gap for accommodating a ball 6 is arranged between the ball frame 5 and the support mandrel 2; the balls 6 are used for bearing friction.
In the prior art, because the drainage and production well is deep, two sucker rods are often required to be connected for use, but the coupling is directly connected with the inner wall of an oil pipe by using coupling threads, so that the phenomena of partial abrasion, breaking off, wearing through of the oil pipe and the like of the sucker rod are caused. In the application, as shown in figure 1, the device is used for connecting two sucker rods, and the diameter of the device is larger than that of the sucker rods, so that the sucker rods cannot directly contact the inner wall of an oil pipe; according to the basic principle of friction force, namely the principle that the rolling friction force is far smaller than the sliding friction force under the same condition, the sliding friction of the traditional coupling and the oil pipe is changed into the rolling friction, so that a more ideal effect can be achieved; when the device is used, the sucker rod reciprocates up and down in the oil pipe to drive the device to move up and down, wherein only a plurality of balls 6 contact and roll with the inner wall of the oil pipe, so that the friction force is reduced; the size of the ball 6 can be selected according to the model of the actual sucker rod and the inner diameter of the oil pipe, and one end of the pressure cap 1 and the supporting mandrel 2, which are used for connecting the sucker rod, can be manufactured according to the model of the used sucker rod, so that the sucker rod is suitable for sucker rods with different models, plug-in sucker rods, hollow sucker rods and the like; meanwhile, the device is made of tensile-resistant stainless steel materials with super wear resistance, sulfur resistance, corrosion resistance and the like, so that the performances of wear resistance and the like are enhanced, and the service life is prolonged; through the technical means, the device can fully reduce the degree of moving abrasion of the contact part between the oil pipe and the sucker rod in the production process, better solve or slow down the eccentric wear or tripping phenomenon of the oil pipe in the production process, reduce wear resistance and save energy consumption, and can release the torque of the sucker rod string in time, prevent the tripping of the sucker rod, prolong the pump checking period, save cost and improve production efficiency.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the pressure cap 1 is a cylinder, and the upper surface of one end of the pressure cap 1, which is relatively far away from the first groove 3, is provided with threads and is used for connecting a sucker rod.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the support core shaft 2 is a cylinder, the support core shaft 2 is in threaded connection with the pressing cap 1, and threads are arranged in the second groove 4.
The upper end of the pressure cap 1 and the lower end of the support mandrel 2 are respectively used for connecting two sucker rods, so that the purpose of connecting the sucker rods is achieved.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the ball frame 5 is respectively provided with a plurality of horizontal and vertical balls 6.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the ball 6 is fixed on the ball frame 5 through a screw.
In this embodiment, the ball 6 hole for accommodating the ball 6 is drilled through the ball frame 5, 3-4 horizontal rows and 5-6 vertical rows of balls 6 are arranged, and the ball 6 is tightly sealed in the ball 6 hole by using a special screw for sealing the ball 6 hole, so that the ball 6 can rotate on the ball frame 5 to reduce friction.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the diameter of one end of the pressing cap 1, which is relatively far away from the first groove 3, is smaller than that of the end provided with the groove.
In order to further optimize the above technical solution, the technical solution is preferably further provided with the following improvements: the outer side wall of one end of the support mandrel 2 relatively far away from the pressing cap 1 is connected with a ball frame 5.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A sucker rod coupling is characterized in that: the method comprises the following steps: the device comprises a pressing cap (1), a supporting mandrel (2) and a ball assembly; a first groove (3) is formed in the pressing cap (1), one end of the supporting mandrel (2) is axially connected into the first groove (3), and the other end of the supporting mandrel extends out in the direction far away from the pressing cap (1); a second groove (4) is formed in one end, relatively far away from the pressing cap (1), of the supporting mandrel (2); one end, far away from the first groove (3), of the pressing cap (1) is used for being connected with a sucker rod, and the second groove (4) is used for being connected with the sucker rod;
the ball assembly includes: the ball bearing device comprises a ball bearing frame (5) arranged in a circular shape and a plurality of balls (6) arranged on the ball bearing frame (5); one end of the ball frame (5) is connected with the pressure cap (1) and sleeved on the outer side of the support mandrel (2); a gap for accommodating the ball (6) is arranged between the ball frame (5) and the support mandrel (2); the balls (6) are used for bearing friction force.
2. The sucker rod coupling of claim 1, wherein: the pressure cap (1) is a cylinder, and the upper surface of one end of the pressure cap (1) relatively far away from the first groove (3) is provided with threads and is used for connecting a sucker rod.
3. The sucker rod coupling of claim 1, wherein: the supporting core shaft (2) is a cylinder, the supporting core shaft (2) is in threaded connection with the pressing cap (1), and threads are arranged in the second groove (4).
4. The sucker rod coupling of claim 1, wherein: the ball frame (5) is respectively provided with a plurality of horizontal and vertical balls (6).
5. The sucker rod coupling of claim 1, wherein: the diameter of one end, which is relatively far away from the first groove (3), of the pressing cap (1) is smaller than that of one end provided with the groove.
6. The sucker rod coupling of claim 1, wherein: the outer side wall of one end, relatively far away from the pressure cap (1), of the support mandrel (2) is connected with the ball frame (5).
7. The sucker rod coupling of claim 1, wherein: the ball (6) is fixed on the ball frame (5) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020191030.6U CN212337183U (en) | 2020-02-21 | 2020-02-21 | Sucker rod coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020191030.6U CN212337183U (en) | 2020-02-21 | 2020-02-21 | Sucker rod coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337183U true CN212337183U (en) | 2021-01-12 |
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ID=74064201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020191030.6U Active CN212337183U (en) | 2020-02-21 | 2020-02-21 | Sucker rod coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212337183U (en) |
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2020
- 2020-02-21 CN CN202020191030.6U patent/CN212337183U/en active Active
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