Intelligent planetary high-speed centrifugal oil extraction device

Abstract

The utility model provides a kind of intelligent planet high-speed centrifugal oil extraction device, it is related to oil and gas exploitation technical field, including sleeve pipe, several ultra-high-speed motors are arranged in sleeve pipe, flexible coupling is connected between ultra-high-speed motor and ultra-high-speed motor, the output end of the uppermost ultra-high-speed motor is connected with rotating rod, righting device is installed on rotating rod, rotating rod upper end is connected with two-stage planetary gear transmission, the upside output end of two-stage planetary gear transmission is connected with impeller.The utility model can keep central position in sleeve pipe by setting righting device, also can absorb vibration energy in running process, substantially reduce the risk of resonance caused by equipment sway, stronger stability;By setting two-stage planetary gear transmission, it guarantees output big torque, breaks away from the traditional mode of "length for power", can reduce the length of oil extraction device as a whole, while meeting the effect of ultra-deep well oil and gas field exploitation.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas extraction technology, specifically to an intelligent planetary high-speed centrifugal oil extraction device. Background Technology

[0002] The global oil and gas industry is at a turning point in its development. Oil wells that relied on natural geological energy for self-flowing oil production in the past have seen their formation pressure gradually depleted after decades of continuous exploitation. Today, most require artificial lift technology to maintain production. In the current exploration and development phase, as oil and gas resource development continues to advance into deeper and ultra-deep formations, drilling depths are constantly reaching new highs, and the underground environment is becoming increasingly complex—extreme conditions such as high temperature, high pressure, and high sulfur content are emerging one after another. This places unprecedentedly stringent demands on the performance, reliability, and adaptability of oil production equipment.

[0003] Currently, the oil and gas extraction equipment used in China generally adopts a technical solution of "low speed, long volume, and high torque"—by reducing the motor speed and increasing the size of the motor and impeller, a "length-for-power" approach is used to achieve high torque output. However, this solution has several problems. First, the torque is still insufficient and cannot meet the operational requirements of deep well extraction. Second, when the motor is running at low speed, its long volume is prone to causing resonance inside the cylinder. If an attempt is made to increase the speed to enhance the power, the resonance will intensify, leading to motor burnout or impeller damage. Utility Model Content

[0004] This invention provides an intelligent planetary high-speed centrifugal oil extraction device to solve at least one of the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model discloses an intelligent planetary high-speed centrifugal oil extraction device, including a casing, a number of ultra-high-speed motors are installed inside the casing, and a flexible coupling connects the ultra-high-speed motors. A rotating rod is connected to the output end of the uppermost ultra-high-speed motor, a centralizer is installed on the rotating rod, a two-stage planetary gear transmission is connected to the upper end of the rotating rod, an impeller is connected to the upper output end of the two-stage planetary gear transmission, and an oil pipe is connected through the impeller.

[0006] Preferably, a sensor is also installed on the ultra-high-speed motor at the bottom.

[0007] Preferably, the upper output end of the two-stage planetary gear transmission is also provided with a connector and a protector, and an impeller is installed on the protector.

[0008] Preferably, the two-stage planetary gear transmission includes an upper mounting frame and a lower mounting frame. A rotating shaft is mounted through the upper mounting frame, and a sun gear is fixedly installed at the lower end of the rotating shaft. Several mounting slots are provided on the periphery of the upper mounting frame, and planet gears are rotatably installed in the mounting slots. The planet gears and the sun gear are meshed together.

[0009] Preferably, the upper mounting frame and the lower mounting frame are rotatably connected. A rotating rod is rotatably mounted through the lower mounting frame. A sun gear II is fixedly installed at the upper end of the rotating rod. Several mounting slots II are provided on the periphery of the lower mounting frame. Planet gears II are rotatably installed in the mounting slots II and are meshed with the sun gear II.

[0010] Preferably, an internal gear ring is provided in the upper mounting bracket, and a groove is provided on the lower mounting bracket. A gear is fixedly installed in the groove, and the gear meshes with the internal gear ring.

[0011] Preferably, the two-stage planetary gear transmission further includes a housing, which includes an upper housing, a middle housing, and a lower housing. The upper housing, the middle housing, and the lower housing are detachably and fixedly connected. An internal gear ring two and an internal gear ring three are provided inside the middle housing. The internal gear ring two is meshed with planet gear one, and the internal gear ring three is meshed with planet gear two.

[0012] Preferably, a connecting rod is fixedly installed through the center of the planetary gear, and needle roller bearings are symmetrically installed on the connecting rod, with the needle roller bearings rotatably connected to the mounting groove.

[0013] Preferably, a connecting rod 2 is fixedly installed through the center of the planetary gear 2, and needle roller bearings 2 are symmetrically installed on the connecting rod 2, with the needle roller bearings 2 being rotatably connected to the mounting groove 2.

[0014] Preferably, the rotating rod rotates through the centralizer. The centralizer includes a housing with an installation groove. A centralizer block is slidably disposed in the installation groove. The centralizer block contacts the rotating rod. Several springs are installed on the centralizer block. The other ends of the springs are fixedly connected to a support block. A clamp is also installed on the installation groove. The clamp is detachably connected to the support block.

[0015] Compared with existing technologies, this utility model provides an intelligent planetary high-speed centrifugal oil production device. By setting a centralizer, the unit can be kept in the central position within the casing, and the vibration energy during operation can be absorbed, significantly reducing the risk of resonance caused by equipment shaking and improving stability. By setting a two-stage planetary gear transmission, the torque of the ultra-high-speed motor can be increased in two stages. This ensures high torque output while breaking away from the traditional mode of "trading length for power". The overall length of the oil production device can be reduced, while meeting the requirements of ultra-deep well oil and gas field development. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the two-stage planetary gear transmission of this utility model;

[0019] Figure 3 This is an exploded view of the two-stage planetary gear transmission of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the upper mounting bracket and the lower mounting bracket of this utility model;

[0021] Figure 5 This is an assembly diagram of the upper mounting bracket and the lower mounting bracket of this utility model;

[0022] Figure 6 This is a schematic diagram of the installation of the needle roller bearing of this utility model;

[0023] Figure 7 This is a schematic diagram of the installation of the needle roller bearing II of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the straightening device of this utility model.

[0025] In the diagram: 1. Impeller; 2. Protector; 3. Connector; 4. Two-stage planetary gear transmission; 5. Centralizer; 6. Ultra-high-speed motor; 7. Flexible coupling; 8. Sensor; 9. Oil pipe; 10. Rotating rod; 11. Upper housing; 12. Middle housing; 13. Lower housing; 14. Lower mounting bracket; 15. Upper mounting bracket; 16. Rotating shaft; 17. Gear; 18. Planetary gear one; 19. Planetary gear two; 20. Internal gear ring two; 21. Internal gear ring three; 22. Sun gear one; 23. Sun gear two; 24. Needle roller bearing two; 25. Needle roller bearing one; 26. Centralizer; 27. Housing; 28. Clamp; 29. ​​Support block; 30. Spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] An embodiment of this utility model provides an intelligent planetary high-speed centrifugal oil extraction device, such as... Figures 1-8 As shown, the device includes a casing, inside which are installed several ultra-high-speed motors 6. A flexible coupling 7 connects the ultra-high-speed motors 6. A rotating rod is connected to the output end of the uppermost ultra-high-speed motor 6. A centralizer 5 is installed on the rotating rod. A two-stage planetary gear transmission 4 is connected to the upper end of the rotating rod. An impeller 1 is connected to the upper output end of the two-stage planetary gear transmission 4. An oil pipe 9 is connected through the impeller 1.

[0031] Among these advancements, by abandoning the traditional low-speed motor and using a brand-new ultra-high-speed motor 6, the motor achieves a load rate of up to 85% at 144Hz. The motor size is reduced to 5 meters per section (compared to 7-10 meters for other domestic products), resulting in an overall pump length of 16 meters (compared to 50 meters for other domestic products). The ultra-high-speed motor 6 is segmented and connected, and due to the smaller overall pump size, resonance issues are significantly reduced.

[0032] The working principle and beneficial effects of the above technical solution are as follows: Several ultra-high speed motors 6 are started, and the torque is transmitted through the flexible coupling 7 to drive the rotating rod to rotate. The rotating rod transmits power to the two-stage planetary gear transmission 4. The two-stage planetary gear transmission 4 adjusts the speed and torque. Then, the two-stage planetary gear transmission 4 drives the impeller 1 to rotate. The impeller 1 rotates at high speed, which generates centrifugal force and pressure difference in the tubing 9. The crude oil at the bottom of the well is sucked into the tubing 9 under pressure. After the impeller 1 does work, it is lifted up along the tubing 9 to the ground. The outside of the centralizer 5 is pressed against the casing to ensure that the rotating rod and related components are centered in the casing.

[0033] By setting the centralizer 5, the unit can be kept in the central position inside the casing, and the vibration energy during operation can be absorbed, greatly reducing the risk of resonance caused by equipment shaking and making it more stable. By setting the two-stage planetary gear transmission 4, the torque of the ultra-high speed motor 6 can be increased in two stages. This ensures that the output torque is large, while getting rid of the traditional mode of "trading power for length". The overall length of the oil production unit can be reduced, while meeting the requirements of ultra-deep well oil and gas field development.

[0034] Example 2:

[0035] Based on the above embodiment 1, as follows Figure 1 As shown, a sensor 8 is also installed on the ultra-high speed motor 6 at the bottom.

[0036] Preferably, the upper output end of the two-stage planetary gear transmission 4 is also provided with a connector 3 and a protector 2, and an impeller 1 is installed on the protector 2.

[0037] The beneficial effects of the above technical solution are as follows: Sensor 8 is used to detect values ​​such as bottom hole flowing pressure and crude oil flow rate; Connector 3 and Protector 2 can isolate sand particles and impurities from Impeller 1 (when the crude oil has a high sand content, sand particles entering the gearbox can easily wear the gears); at the same time, they absorb the axial force of the impeller, protect the precision gear set of the planetary gear transmission, and extend its service life.

[0038] Example 3:

[0039] Based on the above embodiment 2, such as Figures 2-5 As shown, the two-stage planetary gear transmission 4 includes an upper mounting bracket 15 and a lower mounting bracket 14. A rotating shaft 16 is mounted through the upper mounting bracket 15. A sun gear 22 is fixedly installed at the lower end of the rotating shaft 16. Several mounting slots are provided around the upper mounting bracket 15. Planet gears 18 are rotatably installed in the mounting slots. The planet gears 18 and the sun gear 22 are meshed and connected.

[0040] Preferably, the upper mounting bracket 15 and the lower mounting bracket 14 are rotatably connected. A rotating rod 10 is rotatably mounted through the lower mounting bracket 14. A sun gear 23 is fixedly installed at the upper end of the rotating rod 10. Several mounting slots are provided around the lower mounting bracket 14. Planet gears 19 are rotatably installed in the mounting slots and are meshed with the sun gear 23.

[0041] Preferably, the upper mounting bracket 15 is provided with an internal gear ring, and the lower mounting bracket 14 is provided with a groove, in which a gear 17 is fixedly installed, and the gear 17 meshes with the internal gear ring.

[0042] Preferably, the two-stage planetary gear transmission 4 further includes a housing, which includes an upper housing 11, a middle housing 12, and a lower housing 13. The upper housing 11, the middle housing 12, and the lower housing 13 are detachably and fixedly connected. The middle housing 12 is provided with an internal gear ring 20 and an internal gear ring 3 21. The internal gear ring 20 is meshed with a planet gear 18, and the internal gear ring 3 21 is meshed with a planet gear 19.

[0043] The working principle and beneficial effects of the above technical solution are as follows: The rotating rod on the uppermost ultra-high speed motor 6 transmits power to the rotating shaft 16, driving the sun gear 22 to rotate at high speed. The sun gear 22 drives the planet gear 18 to rotate within the mounting slot. The planet gear 18 is constrained by the internal gear ring 20, and the upper mounting frame 15 will rotate together. The upper mounting frame 15 drives the gear 17 to rotate through the internal gear ring, and the gear 17 drives the lower mounting frame 14 to rotate together. The lower mounting frame 14 drives several planet gears 19 to revolve. The planet gears 19 rotate under the action of the internal gear ring 21. The planet gears 19 drive the sun gear 23 to rotate, and the sun gear 23 drives the rotating rod 10 to rotate, forming a two-stage planetary gear transmission. This precisely matches the high speed of the motor with the torque required for impeller lifting. At the same time, the entire two-stage planetary gear transmission 4 adopts a coaxial structure, which is more compact. It not only meets the space constraints in the well, but also improves the transmission reliability through multi-gear meshing, making it more practical.

[0044] Example 4:

[0045] Based on the above embodiment 3, such as Figures 6-7 As shown, a connecting rod is fixedly installed through the center of the planetary gear 18, and needle roller bearings 25 are symmetrically installed on the connecting rod. The needle roller bearings 25 are rotatably connected to the mounting groove.

[0046] Preferably, a connecting rod 2 is fixedly installed through the center of planetary gear 2 19, and needle roller bearings 24 are symmetrically installed on the connecting rod 2, and the needle roller bearings 24 are rotatably connected to the mounting groove 2.

[0047] The working principle and beneficial effects of the above technical solution are as follows: When planetary gear 18 and planetary gear 29 revolve or rotate, needle roller bearing 125 and needle roller bearing 24 bear radial loads; by converting sliding friction into rolling friction, the planetary gears are ensured to rotate flexibly, with a friction coefficient of only 0.001-0.003, which can effectively reduce energy loss when the planetary gears rotate, thereby improving the overall efficiency of the transmission. The slender needles of the needle roller bearings have a large contact surface with the inner and outer rings, which can withstand a large radial force and reduce the radial sway of the planetary gears. Compared with ordinary bearings, they have a longer service life and better stability.

[0048] Example 5:

[0049] Based on the above embodiments 1-4, as follows Figure 8 As shown, the rotating rod rotates through the centralizer 5. The centralizer 5 includes a housing 27. The housing 27 has an installation groove. A centralizer 26 is slidably disposed in the installation groove. The centralizer 26 is in contact with the rotating rod. Several springs 30 are installed on the centralizer 26. The other end of the springs 30 is fixedly connected to the support block 29. A clamp 28 is also installed on the installation groove. The clamp 28 is detachably connected to the support block 29.

[0050] Among them, the outer side of the centralizer 5 rests against the inner wall of the sleeve.

[0051] The working principle and beneficial effects of the above technical solution are as follows: In the initial state, the spring 30 pushes the centering block 26 to contact the rotating rod, so that the centering block 26 is tightly attached to the outer wall of the rotating rod to form radial support. When the motor vibrates, the centering block 26 moves with the rotating rod, and the spring 30 automatically adjusts the position of the centering block 26 through elastic force to keep the rotating rod in the center. This can effectively absorb the vibration energy during operation and provide a key guarantee for the stable operation of high-speed and high-torque oil production systems, making it more practical and stable.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A smart planetary high-speed centrifugal oil extraction device, characterized in that, The casing includes a sleeve containing several ultra-high speed motors (6). A flexible coupling (7) connects the ultra-high speed motors (6) to each other. A rotating rod is connected to the output end of the uppermost ultra-high speed motor (6). A stabilizer (5) is installed on the rotating rod. A two-stage planetary gear transmission (4) is connected to the upper end of the rotating rod. An impeller (1) is connected to the upper output end of the two-stage planetary gear transmission (4). An oil pipe (9) is connected through the impeller (1).

2. The intelligent planetary high-speed centrifugal oil extraction device according to claim 1, characterized in that, A sensor (8) is also installed on the ultra-high speed motor (6) at the bottom.

3. The intelligent planetary high-speed centrifugal oil extraction device according to claim 1, characterized in that, The upper output end of the two-stage planetary gear transmission (4) is also provided with a connector (3) and a protector (2), and an impeller (1) is installed on the protector (2).

4. The intelligent planetary high-speed centrifugal oil extraction device according to claim 1, characterized in that, The two-stage planetary gear transmission (4) includes an upper mounting bracket (15) and a lower mounting bracket (14). A rotating shaft (16) is mounted through the upper mounting bracket (15). A sun gear (22) is fixedly installed at the lower end of the rotating shaft (16). Several mounting slots are provided around the upper mounting bracket (15). Planet gears (18) are rotatably installed in the mounting slots. The planet gears (18) and the sun gear (22) are meshed together.

5. The intelligent planetary high-speed centrifugal oil extraction device according to claim 4, characterized in that, The upper mounting bracket (15) and the lower mounting bracket (14) are rotatably connected. A rotating rod (10) is rotatably mounted through the lower mounting bracket (14). A sun gear (23) is fixedly installed at the upper end of the rotating rod (10). Several mounting slots are provided around the lower mounting bracket (14). Planet gears (19) are rotatably installed in the mounting slots. The planet gears (19) mesh with the sun gears (23).

6. The intelligent planetary high-speed centrifugal oil extraction device according to claim 5, characterized in that, An internal gear ring is provided inside the upper mounting bracket (15), and a groove is provided on the lower mounting bracket (14). A gear (17) is fixedly installed in the groove, and the gear (17) meshes with the internal gear ring.

7. The intelligent planetary high-speed centrifugal oil extraction device according to claim 6, characterized in that, The two-stage planetary gear transmission (4) also includes a housing, which includes an upper housing (11), a middle housing (12) and a lower housing (13). The upper housing (11), the middle housing (12) and the lower housing (13) are detachably and fixedly connected. The middle housing (12) is provided with an internal gear ring two (20) and an internal gear ring three (21). The internal gear ring two (20) is meshed with the planet gear one (18), and the internal gear ring three (21) is meshed with the planet gear two (19).

8. The intelligent planetary high-speed centrifugal oil extraction device according to claim 7, characterized in that, A connecting rod is fixedly installed through the center of planetary gear 1 (18), and needle roller bearings 1 (25) are symmetrically installed on the connecting rod 1. The needle roller bearings 1 (25) are rotatably connected to the mounting groove 1.

9. The intelligent planetary high-speed centrifugal oil extraction device according to claim 8, characterized in that, A connecting rod 2 is fixedly installed through the center of planetary gear 2 (19), and needle roller bearings 2 (24) are symmetrically installed on the connecting rod 2. The needle roller bearings 2 (24) are rotatably connected to the mounting groove 2.

10. The intelligent planetary high-speed centrifugal oil extraction device according to claim 7, characterized in that, The rotating rod rotates through the stabilizer (5). The stabilizer (5) includes a housing (27). The housing (27) has an installation groove. A stabilizer block (26) is slidably arranged in the installation groove. The stabilizer block (26) is in contact with the rotating rod. Several springs (30) are installed on the stabilizer block (26). The other end of the several springs (30) is fixedly connected to the support block (29). A clamp (28) is also installed on the installation groove. The clamp (28) and the support block (29) are detachably connected.

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