Self-locking blowout prevention sealing device for polish rod
By designing a self-locking anti-blow sealing device of the light rod, the multi-stage airbag, clamping mechanism, straightener and balancer, the oil and gas leakage problem caused by the inclination of the light rod is solved, and the real-time verticality monitoring of the light rod and the improvement of the sealing effect is achieved.
Patent Information
- Application Number
- CN202421785271.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-26
AI Technical Summary
Existing pole sealing devices cannot monitor the perpendicularity of the pole in real time, causing the pole to tilt, causing oil and gas leakage and environmental pollution.
A self-locking anti-blow sealing device for the optical rod is designed, including a multi-stage airbag, a clamping mechanism, a straightener and a balancer. The verticality of the optical rod is monitored in real time through the balancer. The PLC controller controls the regularizer to adjust the position of the optical rod. The multi-stage airbag is sealed with the outer surface of the optical rod. The oil injector is regularly lubricated to reduce friction.
Real-time verticality monitoring and uninterrupted adjustment of the bar are realized, enhancing the sealing effect between the bar and the shell, avoiding oil and gas leakage and environmental pollution, and extending the service life of the equipment.
Smart Images
Figure CN222894245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polished rod sealing, in particular to a polished rod self-locking anti-blowout sealing device. Background Art
[0002] Oil and natural gas are buried in oil and gas layers tens to thousands of meters underground. To extract them, it is necessary to establish an oil and gas channel between the ground and the underground oil and gas layers. This channel is the well field. A sealing device is needed at the oil wellhead to seal the connection between the oil wellhead and the oil production equipment to avoid oil or natural gas leakage during the production process. The commonly used sealing device is the packing box, which is used to seal the wellhead of the annular space between the oil pipe and the bare rod.
[0003] However, the existing polished rod sealing device cannot monitor the verticality of the polished rod in real time, and the stabilizer cannot continuously adjust the polished rod according to the actual verticality, which may cause the polished rod to tilt in the shell, not only causing a large amount of oil to leak from the gap between the polished rod and the shell, but also causing pollution to the environment around the equipment. Utility Model Content
[0004] In order to solve the above technical problems, a self-locking and anti-blowout sealing device for a polished rod is provided. This technical solution solves the problem that the existing polished rod sealing device proposed in the above background technology cannot monitor the verticality of the polished rod in real time, and the stabilizer cannot continuously adjust the polished rod according to the actual verticality, which may cause the polished rod to tilt in the shell, which will not only cause a large amount of oil to leak from the gap between the polished rod and the shell, but also cause pollution to the environment around the equipment.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A self-locking anti-blowout sealing device for an optical rod comprises an optical rod and a shell, wherein the optical rod is inserted into the shell, a support is fixedly connected to the lower side of the shell, a first-stage airbag, a clamping mechanism, a first-stage straightener, a second-stage airbag, a second straightener, an oiler, a third-stage airbag and a third straightener are sequentially arranged in the shell from bottom to top, a balancer is arranged on the lower end face of the optical rod, connecting seats are fixedly connected to the outer surface of the shell on opposite sides, an air pump is arranged above the connecting seat on the left side, and a PLC controller is arranged above the connecting seat on the right side.
[0007] Preferably, there are two clamping mechanisms, which are relatively distributed inside the shell. The clamping mechanism includes a toggle, a threaded rod is fixedly connected to the inside of the toggle, and one end of the threaded rod away from the toggle is rotatably connected to a clamping plate through a pin.
[0008] Preferably, the threaded rod is threadably connected to the outer surface of the shell.
[0009] Preferably, the shape of the primary airbag is T-shaped and matches the size of the splint.
[0010] Preferably, the first-stage airbag, the second-stage airbag and the third-stage airbag are all in close contact and sealed with the outer surface of the polished rod.
[0011] Preferably, the balancing instrument is communicatively connected to a PLC controller, and the PLC controller is electrically connected to centralizer one, centralizer two and centralizer three.
[0012] Preferably, the output ends of the first centralizer, the second centralizer and the third centralizer are all adapted to the outer surface of the polished rod.
[0013] Preferably, the PLC controller is electrically connected to the air pump, and the air pump is connected to the primary airbag, the secondary airbag and the tertiary airbag through an external catheter.
[0014] Compared with the prior art, the utility model provides a polished rod self-locking anti-blowout sealing device, which has the following beneficial effects:
[0015] 1. The utility model effectively prevents the oil in the well from leaking out from the gap between the polished rod and the shell by designing a multi-stage airbag (a primary airbag, a secondary airbag, and a tertiary airbag) in close contact with the outer surface of the polished rod, thereby avoiding oil waste and environmental pollution. At the same time, the sealing effect of the polished rod and the shell is further enhanced by further squeezing the primary airbag by the splint.
[0016] 2. The utility model monitors the verticality of the polished rod in real time through a balancing instrument, and accurately controls the centralizers (centralizer 1, centralizer 2, centralizer 3) through a PLC controller to continuously adjust the verticality of the polished rod, so that the polished rod always maintains a vertical state. This not only avoids the tilt of the polished rod, which causes the movement to be blocked inside the shell, but also reduces the additional friction and wear caused by the tilt of the polished rod, thereby improving the overall performance and life of the equipment.
[0017] 3. The utility model injects a proper amount of lubricating oil into the outer surface of the polished rod regularly or as needed through an oiler, which effectively reduces the friction between the polished rod and the housing during the up and down movement, reduces the wear of parts, and extends the service life of the equipment. At the same time, good lubrication also improves the smoothness of the movement of the polished rod in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the clamping mechanism of the utility model;
[0020] Figure 3 It is a structural block diagram of the utility model.
[0021] The numbers in the figure are:
[0022] 1. Bare rod; 2. Shell; 3. Support; 4. First-stage airbag;
[0023] 5. Clamping mechanism; 501. Twist; 502. Threaded rod; 503. Clamping plate;
[0024] 6. Centralizer 1; 7. Connecting seat; 8. Air pump; 9. PLC controller; 10. Secondary airbag; 11. Centralizer 2;
[0025] 12. Oiler; 13. Three-stage airbag; 14. Three-stage centralizer; 15. Balancer. DETAILED DESCRIPTION
[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0027] Example 1
[0028] Please refer to Figure 1-3 As shown, a polished rod self-locking anti-blowout sealing device comprises a polished rod 1 and a shell 2, wherein the polished rod 1 is inserted into the shell 2, a support 3 is fixedly connected to the lower side of the shell 2, a first-stage airbag 4, a clamping mechanism 5, a centralizer 1 6, a second-stage airbag 10, a centralizer 2 11, an oiler 12, a third-stage airbag 13 and a centralizer 3 14 are sequentially arranged in the shell 2 from bottom to top, a balancer 15 is arranged on the lower end face of the polished rod 1, connecting seats 7 are fixedly connected to the outer surface of the shell 2 on opposite sides, an air pump 8 is arranged above the left connecting seat 7, and an air pump 8 is arranged on the right connecting seat 7. A PLC controller 9 is provided, and the first-stage airbag 4, the second-stage airbag 10 and the third-stage airbag 13 are all sealed with the outer surface of the light rod 1, the balancer 15 is communicatively connected with the PLC controller 9, the PLC controller 9 is electrically connected with the centralizer 1 6, the second centralizer 11 and the third centralizer 14, and the output ends of the centralizer 1 6, the second centralizer 11 and the third centralizer 14 are all adapted to the outer surface of the light rod 1, the PLC controller 9 is electrically connected with the air pump 8, and the air pump 8 is communicated with the first-stage airbag 4, the second-stage airbag 10 and the third-stage airbag 13 through an external catheter.
[0029] In this embodiment, the device is first connected to the fixed seat above the wellhead through the support 3, and then the polished rod 1 is inserted into the shell 2, and then the polished rod 1 is connected to the external sucker rod. The balancer 15 on the lower side of the polished rod 1 will monitor the verticality of the polished rod 1 in real time and transmit the verticality signal to the PLC controller 9. The PLC controller 9 will control the stabilizer 1 6, the stabilizer 2 11 and the stabilizer 3 14 to continuously adjust the polished rod 1 according to the verticality data transmitted by the balancer 15, so that the polished rod 1 always remains in a vertical state, avoiding the tilt of the polished rod 1, which causes the movement of the polished rod 1 in the shell 2 to be hindered. The secondary PLC controller 9 starts the air pump 8 and inflates the interior of the primary airbag 4, the secondary airbag 10 and the tertiary airbag 13 through the conduit, so that the primary airbag 4, the secondary airbag 10 and the tertiary airbag 13 can seal the outer surface of the polished rod 1, thereby preventing the oil in the well field from seeping out from the gap between the polished rod 1 and the shell 2, causing the oil in the well field to leak out. The oiler 12 can regularly or as needed inject a proper amount of lubricating oil into the outer surface of the polished rod 1, reduce the friction between the polished rod 1 and the shell 2 during the up and down movement, reduce the wear of its parts, and extend the service life of the equipment. At the same time, good lubrication can also improve the smoothness of the vertical movement of the polished rod 1.
[0030] Example 2
[0031] Please refer to Figure 2 As shown, there are two clamping mechanisms 5, which are relatively distributed on the inner side of the shell 2. The clamping mechanism 5 includes a twist knob 501, a threaded rod 502 is fixedly connected to the inner side of the twist knob 501, and one end of the threaded rod 502 away from the twist knob 501 is rotatably connected to a clamping plate 503 through a pin shaft. The threaded rod 502 is threadedly connected to the outer surface of the shell 2, and the shape of the first-stage airbag 4 is T-shaped and matches the size of the clamping plate 503.
[0032] In this embodiment, the staff can twist the knob 501 on both sides of the shell 2. When the knob 501 drives the clamping plate 503 to move toward the inside of the shell 2 through the threaded rod 502, since the shape of the first-stage airbag 4 is T-shaped and matches the size of the clamping plate 503, the clamping plate 503 will squeeze the first-stage airbag 4 inward, further increasing the sealing between the light rod 1 and the shell 2.
[0033] The working principle and use process of this device are as follows: first, the device is connected to the fixed seat above the wellhead through the support 3, and then the polished rod 1 is inserted into the shell 2, and then the polished rod 1 is connected to the external sucker rod. The balancer 15 on the lower side of the polished rod 1 will monitor the verticality of the polished rod 1 in real time, and transmit the verticality signal to the PLC controller 9. The PLC controller 9 will control the straightener 1 6, the straightener 2 11 and the straightener 3 14 to continuously adjust the polished rod 1 according to the verticality data transmitted by the balancer 15, so that the polished rod 1 always maintains a vertical state, avoiding the tilt of the polished rod 1, which causes the movement of the polished rod 1 in the shell 2 to be hindered. Secondly, the PLC controller 9 starts the air pump 8, and inflates the first-stage airbag 4, the second-stage airbag 10 and the third-stage airbag 13 through the catheter, so that the first-stage airbag 4 , the secondary airbag 10 and the tertiary airbag 13 seal the outer surface of the polished rod 1, so as to prevent the oil in the well field from seeping out from the gap between the polished rod 1 and the shell 2, causing the oil in the well field to leak out. The oiler 12 can regularly or as needed inject a proper amount of lubricating oil into the outer surface of the polished rod 1, reduce the friction between the polished rod 1 and the shell 2 during the up and down movement, reduce the wear of its parts, and extend the service life of the equipment. At the same time, good lubrication can also improve the smoothness of the vertical movement of the polished rod 1. The staff can also twist the knobs 501 on both sides of the shell 2. When the knobs 501 drive the splint 503 to move toward the inside of the shell 2 through the threaded rod 502, since the shape of the primary airbag 4 is T-shaped and matches the size of the splint 503, the splint 503 will squeeze the primary airbag 4 inward, further increasing the sealing between the polished rod 1 and the shell 2.
[0034] The basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A polished rod self-locking anti-blowout sealing device, comprising a polished rod (1) and a housing (2), characterized in that: The bare rod (1) is inserted into the shell (2), and a support (3) is fixedly connected to the lower side of the shell (2). The shell (2) is provided with a first-stage airbag (4), a clamping mechanism (5), a first straightener (6), a second-stage airbag (10), a second straightener (11), an oiler (12), a third-stage airbag (13) and a third straightener (14) in sequence from bottom to top. A balancer (15) is provided on the lower end face of the bare rod (1). Connecting seats (7) are fixedly connected to opposite sides of the outer surface of the shell (2), an air pump (8) is provided above the left connecting seat (7), and a PLC controller (9) is provided above the right connecting seat (7).
2. A polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The number of the clamping mechanisms (5) is two, and both are relatively distributed on the inner side of the shell (2). The clamping mechanism (5) comprises a turning knob (501), the inner side of which is fixedly connected to a threaded rod (502), and one end of the threaded rod (502) away from the turning knob (501) is rotatably connected to a clamping plate (503) via a pin.
3. A polished rod self-locking anti-blowout sealing device according to claim 2, characterized in that: The threaded rod (502) is threadably connected to the outer surface of the shell (2).
4. A polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The shape of the primary airbag (4) is T-shaped and matches the size of the clamping plate (503).
5. The polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The first-stage airbag (4), the second-stage airbag (10) and the third-stage airbag (13) are all tightly fitted and sealed to the outer surface of the polished rod (1).
6. The polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The balancing instrument (15) is communicatively connected to the PLC controller (9), and the PLC controller (9) is electrically connected to the centralizer 1 (6), the centralizer 2 (11) and the centralizer 3 (14).
7. The polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The output ends of the centralizer 1 (6), the centralizer 2 (11) and the centralizer 3 (14) are all compatible with the outer surface of the polished rod (1).
8. The polished rod self-locking anti-blowout sealing device according to claim 1, characterized in that: The PLC controller (9) is electrically connected to the air pump (8), and the air pump (8) is connected to the first-stage airbag (4), the second-stage airbag (10) and the third-stage airbag (13) through an external catheter.