Electric submersible pump with high liquid displacement

Abstract

The utility model discloses an electric submersible pump with high liquid discharge capacity, which comprises a main body, a plurality of high-flow suction inlets which surround the outer side of the main body and are communicated with the inside of the main body are formed at the lower end of the main body, the high-flow suction inlets are positioned at the lower end of the main body and are used for conveying liquid for the main body, and the positions of the high-flow suction inlets are favorable for increasing the liquid discharge capacity. Suction inlets of various old models can be replaced, the problem of insufficient liquid supply is solved, positioning rings are symmetrically welded to the two sides of the outer wall of a main body, extending bodies are welded to the outer sides of the two positioning rings, a motor is horizontally installed on one extending body, two parallel edge columns are arranged between the two extending bodies, and the two edge columns are arranged on the outer side of the main body. The two sides of the edge columns are integrally welded to the two extending bodies respectively, and side grooves are formed in the opposite sides of the two edge columns respectively. According to the electric submersible pump with the high liquid discharge capacity, the high-flow suction inlet is formed in the electric submersible pump, so that the liquid inlet discharge capacity is increased, and the problem of insufficient liquid supply is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of submersible electric pumps, and particularly relates to a submersible electric pump with a high liquid displacement. Background Technique

[0002] A submersible electric pump is a multistage centrifugal pump that works underground. It uses a tubing string to lower the centrifugal pump and the submersible motor into the well. The motor drives the multistage centrifugal pump to rotate to generate centrifugal force, lifting the crude oil in the well to the ground. It is a rodless pump oil production equipment widely used in various oilfields.

[0003] In the process of realizing the utility model, the inventor found that there are at least the following problems in this technology: At present, when a submersible electric pump is in use, it usually does not have a facility for cleaning solid impurities at the position of the flow suction inlet of its supporting device. After the long-term use of the submersible electric pump, the solid impurities attached to the position where the flow suction inlet is located will cause insufficient liquid supply.

[0004] Therefore, we propose a submersible electric pump with a high liquid displacement to solve the above problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a submersible electric pump with a high liquid displacement. A plurality of high-flow suction inlets are formed at the lower end of the main body. Since the high-flow suction inlets are located at the lower end of the main body and provide liquid transportation for the main body, the position of the high-flow suction inlets helps to increase the liquid intake displacement, solving the problem of insufficient liquid supply, and can effectively solve the problems in the background technique.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A submersible electric pump with a high liquid displacement includes a main body. A plurality of high-flow suction inlets are formed at the lower end of the main body, surrounding the outer side of the main body and communicating with its interior. Since the high-flow suction inlets are located at the lower end of the main body and provide liquid transportation for the main body, and the position of the high-flow suction inlets helps to increase the liquid intake displacement, it can replace various old models of suction inlets, solving the problem of insufficient liquid supply;

[0008] Positioning rings are symmetrically welded on both sides of the outer wall of the main body. Extension bodies are welded on the outer sides of two of the positioning rings. A motor is horizontally installed on one of the extension bodies. Two parallel edge columns are arranged between the two extension bodies, and both sides of the edge columns are integrally welded to the two extension bodies respectively. Side grooves are formed on the opposite sides of the two edge columns;

[0009] A screw rod and a limit slide bar are respectively arranged in two side grooves. The output shaft of the motor is coaxially connected to the screw rod. The thread directions at both ends of the screw rod are opposite. Both sides of the limit slide bar are welded to the edge columns. Side slide seats are symmetrically arranged between the two edge columns. Two ear plates are symmetrically welded on each side of each side slide seat. One of the ear plates on the side slide seat is threadedly sleeved on the screw rod, and the other ear plate is slidably sleeved on the limit slide bar. Two groups of cleaning brushes are installed on the inner side of each side slide seat.

[0010] As a preferred implementation, a machine cover is also welded on the side where the extension body is located on the side of the motor. The inside of the machine cover is of a hollow design, and the motor is located inside the machine cover, so that the machine cover can protect the motor.

[0011] As a preferred implementation, a plurality of heat dissipation fins are welded on the outer wall of the machine cover and are circumferentially arranged in an array along its central axis. The heat released when the motor operates can be transferred to the plurality of heat dissipation fins through the machine cover for better passive heat dissipation. The motor needs to be powered by an external power facility.

[0012] As a preferred implementation, the screw rod and the limit slide bar are parallel to each other, and both sides of the screw rod are rotatably connected to the edge columns, so that the screw rod can operate stably under the drive of the motor.

[0013] As a preferred implementation, the side slide seat is of an annular design. The two cleaning brushes inside the side slide seat are both C-shaped and are in contact with the outer wall of the main body, so as to facilitate driving the cleaning brushes to move through the side slide seat, and thus scrape the solid impurities near the high-flow suction port on the outer wall of the main body.

[0014] In summary, the technical effects and advantages of the present utility model are as follows:

[0015] For the submersible electric pump with high liquid displacement, a plurality of high-flow suction ports surrounding the outside of the main body and communicating with its inside are formed at the lower end of the main body. Since the high-flow suction ports are located at the lower end of the main body, they provide liquid transportation for the main body, and the positions of the high-flow suction ports help to increase the liquid intake displacement, and can replace various old models of suction ports, solving the problem of insufficient liquid supply for work.

[0016] For the submersible electric pump with high liquid displacement, by driving the built-in motor to operate and driving the screw rod to rotate, the two side slide seats can slide on the outer wall of the main body, and thus the cleaning brushes on their inner sides are used to scrape at the location of the high-flow suction port, so as to prevent the solid impurities in the fluid from blocking the high-flow suction port, and keep the high-flow suction port always at a high flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the main body of the present utility model;

[0018] Figure 2 It is a cross-sectional view of the main body of the present utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the edge column of the present utility model and its surrounding structure;

[0020] Figure 4 This is a horizontal cross-sectional view of the edge column of the present utility model and its surrounding structure;

[0021] Figure 5 This is a vertical cross-sectional view of the edge column of the present utility model and its surrounding structure.

[0022] In the figure: 1, main body; 2, high-flow suction port; 3, positioning ring; 4, extension body; 5, hood; 6, heat sink; 7, motor; 8, edge column; 9, side groove; 10, screw; 11, limit slide bar; 12, ear plate; 13, side slide seat; 14, cleaning brush. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Refer to Figures 1 - 5 , a submersible electric pump with a high liquid displacement, including a main body 1. A plurality of high-flow suction ports 2 that surround the outside of the main body 1 and communicate with its interior are formed at the lower end of the main body 1. Since the high-flow suction ports 2 are located at the lower end of the main body 1, they provide liquid transportation for the main body 1, and the position of the high-flow suction ports 2 helps to increase the liquid intake displacement, and can replace a variety of old-type suction ports, solving the problem of insufficient liquid supply for work;

[0025] Positioning rings 3 are symmetrically welded on both sides of the outer wall of the main body 1. Extension bodies 4 are welded on the outer sides of two of the positioning rings 3. A motor 7 is horizontally installed on one of the extension bodies 4. A hood 5 is also welded on the side of the extension body 4 where the motor 7 is located. The interior of the hood 5 is designed to be hollow, and the motor 7 is located inside the hood 5, so that the hood 5 can protect the motor 7. A plurality of heat sinks 6 are welded on the outer wall of the hood 5 and are distributed in a circumferential array along its central axis, so that the heat released when the motor 7 operates can be transferred to the plurality of heat sinks 6 through the hood 5 for better passive heat dissipation. The motor 7 needs to be powered by an external power facility. Two parallel edge columns 8 are provided between the two extension bodies 4, and both sides of the edge columns 8 are integrally welded to the two extension bodies 4 respectively. Side grooves 9 are respectively formed on the opposite sides of the two edge columns 8;

[0026] Screws 10 and limit slide bars 11 are respectively arranged in two side grooves 9. The output shaft of the motor 7 is coaxially connected to the screw 10. The thread directions at both ends of the screw 10 are opposite. Both sides of the limit slide bar 11 are welded to the edge columns 8. The screw 10 and the limit slide bar 11 are parallel to each other, and both sides of the screw 10 are rotatably connected to the edge columns 8, so that the screw 10 can operate stably under the drive of the motor 7. Side slide seats 13 are symmetrically arranged between the two edge columns 8. Two ear plates 12 are symmetrically welded to both sides of each side slide seat 13. One of the ear plates 12 on the side slide seat 13 is threadedly sleeved on the screw 10, and the other ear plate 12 is slidably sleeved on the limit slide bar 11. Two groups of cleaning brushes 14 are installed inside each side slide seat 13. The side slide seat 13 is designed in a ring shape. The two cleaning brushes 14 inside the side slide seat 13 are both C-shaped and in contact with the outer wall of the main body 1, so as to facilitate driving the cleaning brushes 14 to move through the side slide seat 13, so as to scrape the solid impurities near the high-flow suction port 2 on the outer wall of the main body 1.

[0027] For the submersible electric pump with high liquid displacement: during use, the high-flow suction port 2 provides liquid transportation for the main body 1, and the special position of the high-flow suction port 2 helps to increase the liquid intake displacement, solving the problem of insufficient liquid supply for work; after the main body 1 works for a long time, some solid impurities may adhere to the surface of the high-flow suction port 2 on it. Therefore, the motor 7 can be driven to operate by being powered on, so that it drives the screw 10 to rotate, making the two side slide seats 13 and the ear plates 12 thereon translate in opposite or opposite directions along with the limit slide bar 11, so that the cleaning brushes 14 inside the two side slide seats 13 can clean the solid impurities on the surface of the high-flow suction port 2 on the outer wall of the main body 1, reducing the probability of the high-flow suction port 2 being blocked, and enabling the high-flow suction port 2 to continuously maintain a high flow rate.

[0028] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A submersible electric pump with high liquid displacement, comprising a main body (1), characterized in that: The lower end of the main body (1) is formed with a plurality of high-flow suction ports (2) surrounding the outside of the main body (1) and communicating with the inside thereof; Positioning rings (3) are symmetrically welded on both sides of the outer wall of the main body (1), wherein the outer sides of the two positioning rings (3) are welded with extension bodies (4), a motor (7) is horizontally mounted on one of the extension bodies (4), two edge columns (8) parallel to each other are arranged between the two extension bodies (4), and the two sides of the edge columns (8) are respectively welded to the two extension bodies (4), and side grooves (9) are respectively formed on the opposite sides of the two edge columns (8); A screw (10) and a limiting slide bar (11) are respectively arranged in the two side grooves (9), wherein the output shaft of the motor (7) is coaxially connected to the screw (10), the threads at both ends of the screw (10) are in opposite directions, both sides of the limiting slide bar (11) are welded to the edge column (8), a side slide seat (13) is symmetrically arranged between the two edge columns (8), and both sides of each side slide seat (13) are symmetrically welded with ear plates (12), one of the ear plates (12) on the side slide seat (13) is threadedly sleeved on the screw (10), and the other ear plate (12) is slidably sleeved on the limiting slide bar (11), and two sets of cleaning brushes (14) are installed on the inner side of each side slide seat (13).

2. A submersible electric pump with high liquid displacement according to claim 1, characterized in that: The extension body (4) is located on the side where the motor (7) is located and is also welded with a cover (5), wherein the interior of the cover (5) is of a hollow design, and the motor (7) is located on the inner side of the cover (5).

3. A submersible electric pump with high liquid displacement according to claim 2, characterized in that: The outer wall of the hood (5) is welded with a plurality of heat sinks (6) distributed in a circular array along its axis.

4. A submersible electric pump with high liquid displacement according to claim 1, characterized in that: The screw rod (10) and the limiting sliding rod (11) are parallel to each other, and both sides of the screw rod (10) are rotatably connected to the edge column (8).

5. A submersible electric pump with high liquid displacement according to claim 1, characterized in that: The side sliding seat (13) is of annular design, and the two cleaning brushes (14) in the side sliding seat (13) are both C-shaped and in contact with the outer wall of the main body (1).

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