Oil pumping polish rod length adjusting device
By designing an adjustable sucker rod length device, the complexity and cost issues caused by fixed sucker rod length were solved, achieving high efficiency and stability in oil pumping operations.
Patent Information
- Application Number
- CN202520345289.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The existing sucker rods have a fixed length and cannot be adjusted, which increases the complexity and cost of oil pumping operations.
An oil sucker rod length adjustment device was designed. By using the threaded connection between the extension rod and the sleeve rod and the design of the limiting ring, the length of the oil sucker rod can be adjusted. The limiting ring and the sealing gasket ensure the stability and sealing of the connection.
It enables flexible adjustment of the sucker rod length, reduces equipment complexity and management difficulty, improves connection stability and durability, and reduces overall cost.
Smart Images
Figure CN223647746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petroleum production equipment technology, and in particular to a sucker rod length adjustment device. Background Technology
[0002] Petroleum production equipment refers to various mechanical equipment and tools used in the processes of oil extraction, processing, transportation, and petrochemical product production. Among them, the sucker rod is a round steel rod that is usually installed at the top of the sucker rod to connect the pumping unit and the sucker rod, thereby transmitting power.
[0003] Currently, the length of sucker rods widely used in the market is set to a fixed value and cannot be adjusted. This limitation brings many inconveniences to the oil production process. In order to ensure the efficient operation of oil pumping, operators often have to prepare sucker rods of different lengths in advance to meet the needs of oil wells at different depths. This practice not only increases the complexity of oil pumping equipment and management difficulty, but also significantly increases the overall cost of oil pumping operations to a certain extent. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the length of the oil sucker rod cannot be adjusted. To address this, we propose an oil sucker rod length adjustment device.
[0005] To achieve the above objectives, this application adopts the following technical solution: a sucker rod length adjustment device, comprising a first sleeve rod, a tapered connecting block connected to the top of the first sleeve rod, an extension rod slidably connected inside both the first sleeve rod and the tapered connecting block, a second sleeve rod slidably connected to the surface of the extension rod, a first thread formed on the surface of the tapered connecting block, a second thread formed on the surface of the extension rod, a third thread formed inside the tapered connecting block, the second thread and the third thread being threadedly connected, a tapered groove formed at the bottom end of the second sleeve rod, a fourth thread formed on the surface of the tapered groove, a fifth thread formed inside the second sleeve rod, a sixth thread formed on the surface of the extension rod, the fifth thread and the sixth thread being threadedly connected, and the fourth thread and the first thread being threadedly connected.
[0006] Preferably, a first limiting ring is fixedly connected to the bottom end of the extension rod, the surface of the first limiting ring being slidably connected to the inside of the first sleeve rod, and a second limiting ring is fixedly connected to the top end of the extension rod, the surface of the second limiting ring being slidably connected to the inside of the second sleeve rod.
[0007] Preferably, a sealing gasket is installed at the bottom end of the first limiting ring and a sealing gasket is installed at the top end of the second limiting ring, wherein the outer diameter of the sealing gasket is equal to the inner diameter of the first sleeve rod and the second sleeve rod.
[0008] Preferably, the conical connecting block is a cone shape that gradually decreases in size from low to high, and the conical groove is a cone shape that gradually decreases in size from low to high.
[0009] Preferably, the outer diameter of the tapered connecting block is adapted to the inner diameter of the tapered groove.
[0010] Preferably, the total length of the extension rod is less than the total length of the first set of rods and the second set of rods, respectively.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] In this invention, an extension rod is set as part of the adjustment of the sucker rod. When it is necessary to lengthen the sucker rod, the extension rod needs to be pulled out from the inside of the first rod and connected to the first rod through the second thread and the third thread. Then, the extension rod is threaded to the second rod through the sixth thread and the fifth thread. When it is not necessary to lengthen the sucker rod, the extension rod only needs to be moved back into the inside of the first rod and connected through the first thread on the surface of the tapered connecting block and the fourth thread opened in the tapered groove. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of the sucker rod of this utility model;
[0014] Figure 2 This is a schematic diagram of the extended rod structure of this utility model;
[0015] Figure 3 This is a schematic cross-sectional view of the lower structure of the sucker rod of this utility model;
[0016] Figure 4 This is a cross-sectional schematic diagram of the upper structure of the sucker rod of this utility model.
[0017] Legend: 1. First sleeve rod; 2. Conical connecting block; 3. Extension rod; 4. Second sleeve rod; 5. First thread; 6. Second thread; 7. Third thread; 8. Conical groove; 9. Fourth thread; 10. Fifth thread; 11. Sixth thread; 12. First limiting ring; 13. Second limiting ring; 14. Sealing gasket. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0019] Reference Figure 1 , Figure 3 and Figure 4As shown, this utility model provides a technical solution: a sucker rod length adjustment device, including a first sleeve rod 1, a conical connecting block 2 connected to the top of the first sleeve rod 1, an extension rod 3 slidably connected inside both the first sleeve rod 1 and the conical connecting block 2, a second sleeve rod 4 slidably connected to the surface of the extension rod 3, a first thread 5 formed on the surface of the conical connecting block 2, a second thread 6 formed on the surface of the extension rod 3, a third thread 7 formed inside the conical connecting block 2, the second thread 6 and the third thread 7 being threadedly connected, a conical groove 8 formed at the bottom end of the second sleeve rod 4, a fourth thread 9 formed on the surface of the conical groove 8, a fifth thread 10 formed inside the second sleeve rod 4, and a fifth thread 10 formed on the surface of the extension rod 3. The sixth thread 11, the fifth thread 10 and the sixth thread 11 are threaded together, the fourth thread 9 and the first thread 5 are threaded together. By setting the extension rod 3 as part of the adjustment of the sucker rod, when it is necessary to lengthen the sucker rod, the extension rod 3 needs to be pulled out from the inside of the first sleeve rod 1, and the extension rod 3 is connected to the first sleeve rod 1 through the second thread 6 and the third thread 7. Then the extension rod 3 is threaded to the second sleeve rod 4 through the sixth thread 11 and the fifth thread 10. When it is not necessary to lengthen the sucker rod, the extension rod 3 only needs to be moved back into the inside of the first sleeve rod 1, and connected through the first thread 5 on the surface of the tapered connecting block 2 and the fourth thread 9 opened in the tapered groove 8.
[0020] Reference Figure 1 As shown in this embodiment: the bottom end of the extension rod 3 is fixedly connected to a first limiting ring 12, the surface of the first limiting ring 12 is slidably connected to the inside of the first sleeve rod 1, and the top end of the extension rod 3 is fixedly connected to a second limiting ring 13, the surface of the second limiting ring 13 is slidably connected to the inside of the second sleeve rod 4. By setting the first limiting ring 12 and the second limiting ring 13, the extension rod 3 is limited, so that the extension rod 3 can only move inside the first sleeve rod 1 and the second sleeve rod 4, and the extension rod 3 will not detach from the inside of the first sleeve rod 1 and the second sleeve rod 4.
[0021] Reference Figure 2 , Figure 3 and Figure 4 As shown in this embodiment: a sealing gasket 14 is installed at the bottom end of the first limiting ring 12 and a sealing gasket 14 is installed at the top end of the second limiting ring 13. The outer diameter of the sealing gasket 14 is equal to the inner diameter of the first sleeve rod 1 and the second sleeve rod 4. By setting the sealing gasket 14, the connection between the first sleeve rod 1 and the extension rod 3, and the connection between the extension rod 3 and the second sleeve rod 4 are sealed to ensure the stability of the equipment.
[0022] Reference Figure 3 and Figure 4As shown in this embodiment: the shape of the conical connecting block 2 is a cone that gradually decreases in size from low to high, and the shape of the conical groove 8 is a cone that gradually decreases in size from low to high. By setting the conical connecting block 2 to a cone that gradually decreases in size from low to high, and opening the conical groove 8 inside the second sleeve rod 4, when the first sleeve rod 1 and the second sleeve rod 4 are connected without the need to lengthen the oil sucker rod, the conical connecting block 2 can be inserted into the inside of the conical groove 8, and the outer diameter of the first sleeve rod 1 and the second sleeve rod 4 can remain the same, resulting in a more aesthetically pleasing appearance.
[0023] Reference Figure 3 and Figure 4 As shown in this embodiment, the outer diameter of the tapered connecting block 2 is matched with the inner diameter of the tapered groove 8. By matching the outer diameter of the tapered connecting block 2 with the outer diameter of the tapered groove 8 at the bottom of the second sleeve rod 4, the connection between the first sleeve rod 1 and the second sleeve rod 4 can be made tighter. This precise size matching not only improves the stability of the overall structure, but also enhances the sealing and durability of the connection.
[0024] Reference Figure 1 As shown in this embodiment, the total length of the extension rod 3 is less than the total length of the first rod 1 and the second rod 4. By making the length of the extension rod 3 shorter than the length of the first rod 1 and the second rod 4, the extension rod 3 can be completely placed inside the first rod 1 or the second rod 4 when it is not necessary to extend the length of the sucker rod.
[0025] Working principle: The extension rod 3 is used as part of the sucker rod adjustment. When the sucker rod needs to be lengthened, the extension rod 3 is pulled out from inside the first sleeve rod 1 and connected to the first sleeve rod 1 via the second thread 6 and the third thread 7. Then, the extension rod 3 is threaded to the second sleeve rod 4 via the sixth thread 11 and the fifth thread 10. When the sucker rod does not need to be lengthened, the extension rod 3 is simply moved back into the first sleeve rod 1 and connected via the first thread 5 on the surface of the tapered connecting block 2 and the fourth thread 9 inside the tapered groove 8. The first limiting ring 12 and the second limiting ring 13 limit the extension rod 3, ensuring it only moves within the first sleeve rod 1 and the second sleeve rod 4, preventing it from detaching. The sealing gasket 14 seals the connection between the first sleeve rod 1 and the extension rod 3, and the connection between the extension rod 3 and the second sleeve rod 4. The sealing effect at the connection of the sleeve rod 4 ensures the stability of the equipment. By setting the tapered connecting block 2 to be tapered from low to high, and opening the tapered groove 8 inside the second sleeve rod 4, when the first sleeve rod 1 and the second sleeve rod 4 are connected without the need to lengthen the sucker rod, the tapered connecting block 2 is inserted into the tapered groove 8. The outer diameter of the first sleeve rod 1 and the second sleeve rod 4 can be kept the same, which is more aesthetically pleasing. By matching the outer diameter of the tapered connecting block 2 with the outer diameter of the tapered groove 8 opened at the bottom of the second sleeve rod 4, the connection between the first sleeve rod 1 and the second sleeve rod 4 can be made tighter. This precise size matching not only improves the stability of the overall structure, but also enhances the sealing and durability of the connection. By making the length of the extension rod 3 shorter than the length of the first sleeve rod 1 and the second sleeve rod 4, the extension rod 3 can be completely placed inside the first sleeve rod 1 or the second sleeve rod 4 when the length of the sucker rod does not need to be lengthened.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sucker rod length adjustment device, comprising a first rod (1), characterized in that: The top end of the first sleeve rod (1) is connected to a conical connecting block (2). Both the first sleeve rod (1) and the conical connecting block (2) are slidably connected to an extension rod (3). The surface of the extension rod (3) is slidably connected to a second sleeve rod (4). The surface of the conical connecting block (2) is provided with a first thread (5). The surface of the extension rod (3) is provided with a second thread (6). The interior of the conical connecting block (2) is provided with a third thread (7). The second thread (6) and the third thread (7) are threaded together. The bottom end of the second sleeve rod (4) is provided with a conical groove (8). The surface of the conical groove (8) is provided with a fourth thread (9). The interior of the second sleeve rod (4) is provided with a fifth thread (10). The surface of the extension rod (3) is provided with a sixth thread (11). The fifth thread (10) and the sixth thread (11) are threaded together. The fourth thread (9) and the first thread (5) are threaded together.
2. The oil sucker rod length adjustment device according to claim 1, characterized in that: The bottom end of the extension rod (3) is fixedly connected to a first limiting ring (12), the surface of the first limiting ring (12) is slidably connected to the inside of the first sleeve rod (1), and the top end of the extension rod (3) is fixedly connected to a second limiting ring (13), the surface of the second limiting ring (13) is slidably connected to the inside of the second sleeve rod (4).
3. The oil sucker rod length adjustment device according to claim 2, characterized in that: A sealing gasket (14) is installed at the bottom end of the first limiting ring (12) and a sealing gasket (14) is installed at the top end of the second limiting ring (13). The outer diameter of the sealing gasket (14) is equal to the inner diameter of the first sleeve rod (1) and the second sleeve rod (4).
4. The oil sucker rod length adjustment device according to claim 1, characterized in that: The conical connecting block (2) is a cone shape that gradually decreases in size from low to high, and the conical groove (8) is a cone shape that gradually decreases in size from low to high.
5. The oil sucker rod length adjustment device according to claim 1, characterized in that: The outer diameter of the tapered connecting block (2) is matched with the inner diameter of the tapered groove (8).
6. The oil sucker rod length adjustment device according to claim 1, characterized in that: The total length of the extension rod (3) is less than the total length of the first set of rods (1) and the second set of rods (4).