Discharging and mining slotted screen pipe structure of electric submersible pump

Abstract

The utility model discloses an electric submersible pump drainage and mining slotted screen pipe structure, which relates to the technical field of electric submersible pumps, and comprises a screen pipe and an electric submersible pump arranged above the screen pipe, a second connecting seat is fixed at the upper end of the screen pipe, a first connecting seat is fixed at the lower end of the screen pipe, support legs are symmetrically arranged on the lower surface of the first connecting seat, and the support legs are connected with the second connecting seat. Screen seam holes are formed in the outer portion of the screen pipe, electric lifting rods are symmetrically arranged on the lower surface of the second connecting base, a cleaning ring is arranged at the position, at the lower ends of the electric lifting rods, of the outer portion of the screen pipe, a cleaning brush is arranged on the inner side of the cleaning ring, and a connecting sleeve is further arranged on the outer portion of the second connecting base. According to the electric submersible pump, the cleaning ring can ascend and descend outside the screen pipe through work of the electric lifting rod, guiding is conducted through the guide rod, the cleaning brush on the inner side of the cleaning ring can brush the outside of the screen pipe during ascending and descending, and therefore it can be effectively prevented that screen seam holes formed in the outside of the screen pipe are blocked, and normal use of the electric submersible pump is affected.

Description

A slotted screen structure for electric submersible pump drainage Technical Field

[0001] This utility model relates to the field of electric submersible pump technology, and in particular to a slotted screen structure for electric submersible pump drainage. Background Technology

[0002] An electric submersible pump (ESP) is a pump specifically designed for deep well pumping. During pumping, it is driven directly by an electric motor. It is commonly used for pumping groundwater, oil, and natural gas. Slotted screens are an important component of ESPs during pumping, mainly used for collecting deep fluids in the wellbore during oil and gas extraction. They typically have multiple small holes or slots to allow groundwater or oil and gas to enter and pass through the screens into the pump body, enabling the pump to efficiently extract downhole fluids.

[0003] However, in practical use, the slotted screen openings on the outside of existing screens can become clogged due to contact with mud and sand. If this clogging is not addressed, it will affect the pumping operation of the electric submersible pump. Therefore, those skilled in the art have provided a slotted screen structure for electric submersible pump pumping to solve the problems mentioned in the background art. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a slotted screen structure for electric submersible pump drainage, which solves the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric submersible pump (ESP) for slotted screen pipe construction, comprising: a screen pipe and an ESP installed above the screen pipe. A second connecting seat is fixed to the upper end of the screen pipe, and a first connecting seat is fixed to the lower end of the screen pipe. Support legs are symmetrically arranged on the lower surface of the first connecting seat. Screen slot holes are opened on the outside of the screen pipe. Electric lifting rods are symmetrically arranged on the lower surface of the second connecting seat. A cleaning ring is provided on the outside of the screen pipe at the lower end of the electric lifting rod. A cleaning brush is provided on the inner side of the cleaning ring. A connecting sleeve is also provided on the outside of the second connecting seat.

[0006] As a further technical solution of this utility model, the outer side of the second connecting seat and the outer end of the electric submersible pump are both provided with external threads, and the inner side of the connecting sleeve is provided with internal threads that engage with the external threads.

[0007] As a further technical solution of this utility model, the upper surface of the second connecting seat is provided with a positioning groove, the upper surface of the positioning groove is symmetrically provided with positioning pins, and the lower surface of the electric submersible pump is provided with positioning holes that are compatible with the positioning pins.

[0008] As a further technical solution of this utility model, guide rods are symmetrically arranged between the second connecting seat and the first connecting seat, and the cleaning ring is slidably installed on the outside of the guide rods.

[0009] As a further technical solution of this utility model, the fixed end of the electric lifting rod is installed on the lower surface of the second connecting seat, and the telescopic end of the electric lifting rod is connected to the upper surface of the cleaning ring.

[0010] As a further technical solution of this utility model, the inner end of the cleaning brush is in contact with the outside of the screen tube, and three legs are symmetrically arranged on the lower surface of the first connecting seat.

[0011] This utility model provides a slotted screen structure for electric submersible pump drainage, which has the following advantages compared with the prior art:

[0012] 1. The design of this electric submersible pump drainage slotted screen tube structure uses an electric lifting rod to raise and lower the cleaning ring outside the screen tube, guided by a guide rod. During the raising and lowering, the cleaning brush inside the cleaning ring brushes the outside of the screen tube, which can effectively prevent the screen slots on the outside of the screen tube from becoming blocked and affecting the normal use of the electric submersible pump.

[0013] 2. The electric submersible pump (ESP) slotted screen structure designed in this paper can achieve the positioning connection between the ESP and the screen by symmetrically arranged positioning pins inside the positioning groove. By connecting the connecting sleeve to the external thread of the second connecting seat, the ESP and the screen can be quickly installed and disassembled, which is convenient to use and has good practicality. Attached Figure Description

[0014] Figure 1 is a schematic diagram of a slotted screen structure for an electric submersible pump.

[0015] Figure 2 is a schematic diagram of the connecting sleeve in a slotted screen structure for electric submersible pump drainage.

[0016] Figure 3 is a front view of the screen tube in a slotted screen tube structure for electric submersible pump drainage.

[0017] Figure 4 is a top view of the cleaning ring in a slotted screen structure for electric submersible pump drainage.

[0018] In the diagram: 1. Electric submersible pump; 2. Screen tube; 21. Screen slot; 3. Cleaning ring; 31. Guide rod; 32. Electric lifting rod; 33. Cleaning brush; 4. First connecting seat; 41. Support leg; 5. Second connecting seat; 51. Connecting sleeve; 52. Positioning groove; 53. Positioning pin. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4. This utility model provides a technical solution for an electric submersible pump (ESP) slotted screen tube structure: it includes a screen tube 2 and an ESP 1 set above the screen tube 2. A second connecting seat 5 is fixed at the upper end of the screen tube 2, and a first connecting seat 4 is fixed at the lower end of the screen tube 2. Support legs 41 are symmetrically arranged on the lower surface of the first connecting seat 4. Screen slot holes 21 are opened on the outside of the screen tube 2. Electric lifting rods 32 are symmetrically arranged on the lower surface of the second connecting seat 5. A cleaning ring 3 is set at the lower end of the electric lifting rod 32 on the outside of the screen tube 2. A cleaning brush 33 is set on the inner side of the cleaning ring 3. A connecting sleeve 51 is also set on the outside of the second connecting seat 5. This arrangement uses the connecting sleeve 51 to realize the positioning connection between the ESP 1 and the screen tube 2. By using the cleaning brush 33 on the inner side of the cleaning ring 3 that moves up and down on the outside of the screen tube 2, the screen slot holes 21 can be cleaned to avoid clogging and affecting use.

[0021] As shown in Figures 1 and 2, the outer side of the second connecting seat 5 and the outer end of the electric submersible pump 1 are provided with external threads, and the inner side of the connecting sleeve 51 is provided with internal threads that engage with the external threads. This arrangement allows the connecting sleeve 51 to rotate on the external threads of the second connecting seat 5 and the electric submersible pump 1, thus enabling the electric submersible pump 1 to be quickly connected to the second connecting seat 5.

[0022] As shown in Figures 1 and 2, a positioning groove 52 is provided on the upper surface of the second connecting seat 5, and positioning pins 53 are symmetrically arranged on the upper surface of the positioning groove 52. A positioning hole that matches the positioning pin 53 is provided on the lower surface of the electric submersible pump 1. This arrangement can achieve the purpose of positioning connection between the electric submersible pump 1 and the screen tube 2 by embedding the positioning pin 53 into the positioning hole.

[0023] As shown in Figures 2, 3, and 4, guide rods 31 are symmetrically arranged between the second connecting seat 5 and the first connecting seat 4. The cleaning ring 3 is slidably installed on the outside of the guide rod 31. The fixed end of the electric lifting rod 32 is installed on the lower surface of the second connecting seat 5, and the telescopic end of the electric lifting rod 32 is connected to the upper surface of the cleaning ring 3. This arrangement allows the cleaning ring 3 to rise and fall outside the screen tube 2 by the operation of the electric lifting rod 32, and is guided by the guide rod 31 during the rise and fall. In this way, the purpose of cleaning the screen openings 21 on the outside of the screen tube 2 can be achieved by the cleaning brush 33 on the inner side of the cleaning ring 3. The cleaning brush 33 can be made of nylon or stainless steel.

[0024] As shown in Figure 2, the inner end of the cleaning brush 33 contacts the outside of the screen tube 2. Three support legs 41 are symmetrically arranged on the lower surface of the first connecting seat 4. This arrangement allows the cleaning brush 33 to clean the outside of the screen tube 2, while the support legs 41 can improve the stability of the screen tube 2, making it practical.

[0025] The working principle of this utility model is as follows: When using the electric submersible pump and slotted screen pipe structure, the electric submersible pump 1 and the screen pipe 2 are first connected and installed. During installation, the lower surface of the electric submersible pump 1 can be embedded into the positioning groove 52 opened on the second connecting seat 5, and the positioning pin 53 can be embedded into the positioning hole to realize the positioning connection between the electric submersible pump 1 and the screen pipe 2. The connection between the electric submersible pump 1 and the screen pipe 2 can be stabilized by rotating the threaded connecting sleeve 51. It has good practicality. After connection, the electric submersible pump 1 and the screen pipe 2 can be put into the water for operation. In order to avoid the screen slot holes 21 opened on the outside of the screen pipe 2 from being blocked, the two electric lifting rods 32 symmetrically arranged on the lower surface of the second connecting seat 5 can be made to work synchronously by an external power source. This allows the cleaning ring 3 to be raised and lowered on the outside of the screen pipe 2 and guided by the guide rod 31. When it is raised and lowered, the cleaning brush 33 on the inner side of the cleaning ring 3 will brush the outside of the screen pipe 2, thereby effectively preventing the screen slot holes 21 opened on the outside of the screen pipe 2 from being blocked and affecting the normal use of the electric submersible pump 1.

[0026] All electrical components used in this invention are existing known electrical devices, all of which are connected to an external controller and external power supply, and all of which can be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. The appropriate model is selected according to actual use. Therefore, the structure, circuit, and control principle of the device are not described in detail here.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A slotted screen structure for electric submersible pump drainage, characterized in that, include: The screen tube (2) and the electric submersible pump (1) are arranged above the screen tube (2). The upper end of the screen tube (2) is fixed with a second connecting seat (5) and the lower end of the screen tube (2) is fixed with a first connecting seat (4). The lower surface of the first connecting seat (4) is symmetrically provided with support legs (41). The screen tube (2) is provided with a screen slot hole (21). The lower surface of the second connecting seat (5) is symmetrically provided with an electric lifting rod (32). The screen tube (2) is provided with a cleaning ring (3) at the lower end of the electric lifting rod (32). The cleaning ring (3) is provided with a cleaning brush (33) on the inner side. The second connecting seat (5) is also provided with a connecting sleeve (51).

2. The slotted screen structure for electric submersible pump drainage as described in claim 1, characterized in that, The second connecting seat (5) and the outer end of the electric submersible pump (1) are provided with external threads, and the inner side of the connecting sleeve (51) is provided with internal threads that engage with the external threads.

3. The slotted screen structure for electric submersible pump drainage as described in claim 1, characterized in that, The upper surface of the second connecting seat (5) is provided with a positioning groove (52), and the upper surface of the positioning groove (52) is symmetrically provided with positioning pins (53). The lower surface of the electric submersible pump (1) is provided with positioning holes that are compatible with the positioning pins (53).

4. The slotted screen structure for electric submersible pump drainage as described in claim 1, characterized in that, A guide rod (31) is symmetrically arranged between the second connecting seat (5) and the first connecting seat (4), and the cleaning ring (3) is slidably installed on the outside of the guide rod (31).

5. The slotted screen structure for electric submersible pump drainage according to claim 1, characterized in that, The fixed end of the electric lifting rod (32) is installed on the lower surface of the second connecting seat (5), and the telescopic end of the electric lifting rod (32) is connected to the upper surface of the cleaning ring (3).

6. The ESP drawdown slotted screen structure of claim 1, wherein, The inner end of the cleaning brush (33) is in contact with the outside of the screen tube (2), and three legs (41) are symmetrically arranged on the lower surface of the first connecting seat (4).

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