Complex medium electric submersible pump

Abstract

This utility model discloses an electric submersible pump for complex media, relating to the field of oil pump technology. It includes an outer tube containing a main shaft and a bearing housing. A first inner ring is located on the main shaft within the bearing housing, and a first outer ring is located outside the first inner ring. A second inner ring is located on the main shaft to one side of the first inner ring. The working principle of this utility model utilizes the different rotation directions of the rotor and stator blades. Under the high-speed rotation of the rotor, the medium is continuously pushed upwards, thereby achieving the purpose of oil extraction. Its characteristic is that this electric submersible pump does not have valve balls or seats, making it suitable for various complex media. Damage to valve balls and seats does not affect oil extraction, greatly improving its service life. Dozens of rotors and stators can be connected in series to form an assembly, and several assemblies can be connected in series for use, improving efficiency and ensuring safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, specifically to an electro-submersible oil pump for complex media. Background Technology

[0002] A pumping unit is a downhole device that lifts crude oil from a well to the surface, driven by a pumping unit. A typical pumping unit mainly consists of four parts: the pump barrel, the suction valve, the piston, and the discharge valve. Based on how the pumping unit is fixed downhole, it can be divided into tubular pumps and rod pumps.

[0003] In existing oil pumps, the valve ball and valve seat are the most important components. Due to the long-term mutual movement between the valve ball and valve seat, the ball valve and valve seat are prone to damage. Damage to the valve ball and valve seat affects oil pumping and greatly reduces its service life. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a complex medium electro-submersible oil pump, which solves the technical problem that in existing oil pumps, the valve ball and valve seat are the most important components. Due to the long-term mutual movement between the valve ball and valve seat, the ball valve and valve seat are prone to damage, which affects oil pumping and greatly reduces their service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a complex medium electric submersible pump, comprising an outer tube, a main shaft inserted inside the outer tube, a bearing housing inside the outer tube, a first inner ring on the main shaft and located inside the bearing housing, a first outer ring outside the first inner ring, a second inner ring on the main shaft and located on one side of the first inner ring, a second outer ring outside the second inner ring, a stator inside the outer tube and located on one side of the bearing, stator blades inside the stator, and a rotor on the main shaft and located on one side of the second inner ring.

[0006] Preferably, the rotor and stator blades rotate in opposite directions.

[0007] Preferably, the second inner ring is located on both sides of the rotor, and the second outer ring is located on both sides of the rotor.

[0008] Preferably, there are two first inner rings, and the first inner ring is located on the side of the second inner ring away from the rotor.

[0009] Preferably, there are two second outer rings, with the first outer ring located on the side of the second outer ring away from the rotor.

[0010] Beneficial effects

[0011] This invention provides an electro-submersible pump for complex media, solving the technical problem of existing pumps where the valve ball and seat, being the most critical components, are prone to damage due to prolonged interaction. This damage negatively impacts pumping efficiency and significantly reduces the pump's lifespan. The working principle of this invention utilizes the different rotation directions of the rotor and stator blades. Under high-speed rotor rotation, the medium is continuously pushed upwards, achieving the purpose of oil extraction. Its key feature is the absence of valve balls and seats, making it suitable for various complex media. The absence of valve ball and seat damage significantly extends its service life. Dozens of rotors and stators can be connected in series to form an assembly, and several assemblies can be connected in series for further efficiency and reliable operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the complex medium electric submersible oil pump described in this utility model.

[0013] In the diagram: 1. Outer tube; 2. Main shaft; 3. Bearing housing; 4. First inner ring; 5. First outer ring; 6. Second inner ring; 7. Second outer ring; 8. Stator blade; 9. Rotor. Detailed Implementation

[0014] 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 protection scope of the present utility model.

[0015] Please see Figure 1 This utility model provides a technical solution: a complex medium electric submersible oil pump, including an outer tube 1, a main shaft 2 inserted inside the outer tube 1, a bearing seat 3 provided inside the outer tube 1, a first inner ring 4 provided on the main shaft 2 and inside the bearing seat 3, a first outer ring 5 provided outside the first inner ring 4, a second inner ring 6 provided on the main shaft 2 and on one side of the first inner ring 4, a second outer ring 7 provided outside the second inner ring 6, a stator provided inside the outer tube 1 and on one side of the bearing, stator blades 8 provided inside the stator, and a rotor 9 provided on the main shaft 2 and on one side of the second inner ring 6.

[0016] In this embodiment, the rotor 9 is configured to rotate in the opposite direction to the stator blades 8.

[0017] In this embodiment, the second inner ring 6 is located on both sides of the rotor 9, and the second outer ring 7 is located on both sides of the rotor 9.

[0018] In this embodiment, the number of the first inner ring 4 is two, and the first inner ring 4 is located on the side of the second inner ring 6 that is away from the rotor 9.

[0019] In this embodiment, the number of the second outer ring 7 is two, and the first outer ring 5 is located on the side of the second outer ring 7 that is away from the rotor 9.

[0020] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0021] Example: As can be seen from the accompanying drawings, its working principle is to utilize the different rotation directions of the rotor 9 and the stator blades 8. Under the high-speed rotation of the rotor 9, the medium is continuously pushed upward, thereby achieving the purpose of oil extraction.

[0022] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A complex medium electric submersible pump, including an outer pipe (1), characterized in that, The outer tube (1) is fitted with a main shaft (2), and the outer tube (1) is provided with a bearing seat (3). The main shaft (2) is provided with a first inner ring (4) located inside the bearing seat (3), and a first outer ring (5) is provided outside the first inner ring (4). The main shaft (2) is provided with a second inner ring (6) located on one side of the first inner ring (4), and a second outer ring (7) is provided outside the second inner ring (6). The outer tube (1) is provided with a stator located on one side of the bearing, and a stator blade (8) is provided inside the stator. The main shaft (2) is provided with a rotor (9) located on one side of the second inner ring (6).

2. The complex medium electro-submersible pump according to claim 1, characterized in that... The rotor (9) rotates in the opposite direction to the stator blades (8).

3. The complex medium electric submersible pump according to claim 1, characterized in that... The second inner ring (6) is located on both sides of the rotor (9), and the second outer ring (7) is located on both sides of the rotor (9).

4. The complex medium electro-submersible pump according to claim 1, characterized in that... There are two first inner rings (4), and the first inner ring (4) is located on the side of the second inner ring (6) away from the rotor (9).

5. The complex medium electro-submersible pump according to claim 4, characterized in that... There are two second outer rings (7), and the first outer ring (5) is located on the side of the second outer ring (7) away from the rotor (9).

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