Impeller guide wheel of electric submersible pump

Abstract

The utility model discloses an electric submersible pump impeller guide wheel which comprises a rotating body, a mounting cavity is formed in the rotating body, a plurality of positioning insertion holes are evenly formed in the outer surface of the rotating body and communicated with the mounting cavity, blades are inserted into the positioning insertion holes in a sealed mode, and a long inclined groove is formed in one side of the outer surface of each blade. The top of the rotating body is provided with a pressing and fixing piece penetrating through the mounting cavity, the pressing and fixing piece is in threaded connection with the inner wall of the mounting cavity, the bottom of the pressing and fixing piece is rotationally connected with a connecting piece, and the bottom of the connecting piece is evenly and fixedly connected with a plurality of pressing blocks. According to the blade guide wheel, the positioning inserting holes, the blades, the installation cavities, the long inclined grooves, the pressing and fixing pieces, the connecting pieces and the pressing blocks are arranged, the blades are designed to be detachable, once the blades are damaged, the blades can be rapidly replaced, cutting, polishing, welding and other operation are not needed, the time consumed by maintenance is shortened, and the maintenance progress of the blade guide wheel can be obviously accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller guide wheels, in particular to an impeller guide wheel for a submersible electric pump. Background Art

[0002] Submersible electric pump is a multi-stage centrifugal pump working underground. The centrifugal pump and submersible motor are lowered into the well with oil pipes. The motor drives the multi-stage centrifugal pump to rotate and generate centrifugal force to lift the crude oil in the well to the surface of the oil production equipment. It is a rodless pump oil production equipment widely used in various oil fields.

[0003] The impeller is a form of impeller, also known as the guide wheel. Its main function is to guide the fluid to the impeller inlet when conveying a large volume of fluid and control the inlet angle and direction of the fluid. It is an important component of the submersible electric pump.

[0004] The prior art publication number is CN219754876U, which is an easy-to-maintain impeller, comprising a swivel, a shaft and a retaining ring. The outer wall of the swivel is annularly welded with multiple blades, and the multiple blades are evenly spaced. The blades are arc-shaped structures. The swivel is sleeved on the outside of the shaft, and a retaining ring is provided on the top of the swivel. The retaining ring is sleeved on the outside of the shaft and fits tightly with the outer wall of the shaft.

[0005] When the impeller fails, the bolts can be removed to separate the retaining ring and the fixing pin from the swivel, so that the swivel can be quickly removed from the shaft for repair. However, the swivel and the blades are fixed by welding. Once the blades are damaged and need to be replaced with new ones, the old blades need to be cut off, and then the surface of the swivel is polished and then welded with new blades. The whole repair process takes a long time, affecting the repair progress. If the entire impeller is replaced directly, the cost is high and the utilization rate of the swivel is reduced. Utility Model Content

[0006] The utility model is a submersible electric pump impeller which is proposed to solve the shortcomings in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a submersible electric pump impeller includes a swivel, a mounting cavity is provided inside the swivel, a plurality of positioning holes are evenly provided on the outer surface of the swivel, and the positioning holes are connected to the mounting cavity, blades are sealed and inserted in the plurality of positioning holes, and a long oblique groove is provided on one side of the outer surface of the plurality of blades; a pressing piece is provided on the top of the swivel and passes through the mounting cavity, and the pressing piece is threadedly connected to the inner wall of the mounting cavity, a connecting piece is rotatably connected to the bottom of the pressing piece, a plurality of pressing blocks are evenly and fixedly connected to the bottom of the connecting piece, and the pressing blocks match the long oblique grooves.

[0008] Furthermore, the plurality of blades include a use portion and a reinforcement portion, the positioning socket matches the reinforcement portion, and the long oblique groove is provided on one side of the outer surface of the reinforcement portion, the reinforcement portion increases the thickness of the blade, and ensures the use strength of the blade.

[0009] Furthermore, the pressing piece includes a hexagonal ring, and the hexagonal ring abuts against the swivel, the bottom of the hexagonal ring is fixedly connected with a connecting ring, and the connecting ring is threadedly connected to the inner wall of the installation cavity. The setting of the hexagonal ring is conducive to using a wrench to drive the connecting ring to rotate.

[0010] Furthermore, the connecting member includes a movable ring, and the movable ring is rotatably installed on the bottom of the connecting ring. The bottom of the movable ring is fixedly connected with a mounting ring, and the mounting ring is fixedly connected to the pressure block. The setting of the movable ring is conducive to the rotatable connection between the mounting ring and the connecting ring.

[0011] Furthermore, a limiting groove is provided on one side of the outer surface of each of the plurality of pressing blocks, and a limiting block is slidably connected inside each of the plurality of limiting grooves. An abutment block is fixedly connected on one side of the outer surface of each of the plurality of limiting blocks, and the abutment block abuts against the adjacent reinforcement portion. The limiting groove and the limiting block cooperate to limit the pressing block, thereby ensuring the stability of its movement.

[0012] Furthermore, a plurality of positioning blocks are fixedly connected to the inner surface of the swivel, which is beneficial to the positioning and installation of the swivel.

[0013] Furthermore, the inclined surfaces of the plurality of long inclined grooves are all arranged on a side close to the positioning block, and the pressing inclined surfaces of the plurality of pressing blocks are all arranged on a side close to the positioning block. After the pressing block enters the long inclined groove, it will push the blade to move toward the positioning block.

[0014] Beneficial effects of the utility model:

[0015] When the utility model is in use, the impeller guide wheel of the submersible electric pump is designed to be detachable through the positioning sockets, blades, mounting cavities, long inclined grooves, pressing pieces, connecting pieces and pressing blocks. Once the blades are damaged, they can be quickly replaced without the need for cutting, grinding, welding and other operations, thereby reducing the time consumed in maintenance and significantly improving the maintenance progress of the impeller guide wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 : A three-dimensional diagram of the utility model;

[0018] Figure 2 : A cross-sectional view of the utility model;

[0019] Figure 3 : Schematic diagram of the connection between the connecting piece and the pressing piece of the utility model;

[0020] Figure 4 :The utility model Figure 2 Enlarged view of point A in the middle.

[0021] The reference numerals are as follows:

[0022] 1. Swivel; 2. Positioning block; 3. Hexagonal ring; 4. Use part; 5. Abutment block; 6. Reinforcement part; 7. Connecting ring; 8. Mounting ring; 9. Movable ring; 10. Mounting cavity; 11. Limit block; 12. Limit groove; 13. Long oblique groove; 14. Positioning socket; 15. Pressing block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4 As shown, it relates to a submersible electric pump impeller, including a swivel 1, an installation cavity 10 is opened inside the swivel 1, a plurality of positioning holes 14 are evenly opened on the outer surface of the swivel 1, and the positioning holes 14 are connected with the installation cavity 10, blades are sealed and inserted in the plurality of positioning holes 14, a long oblique groove 13 is opened on one side of the outer surface of the plurality of blades, the plurality of blades include a use portion 4 and a reinforcement portion 6, and the positioning holes 14 match the reinforcement portion 6, and the long oblique groove 13 is opened on one side of the outer surface of the reinforcement portion 6, and a sealing ring is installed on the inner surface of the positioning holes 14 to ensure the sealing of the connection between the blade and the positioning holes 14.

[0025] A pressing piece penetrating into the mounting cavity 10 is provided at the top of the swivel 1, and the pressing piece is threadedly connected to the inner wall of the mounting cavity 10, and a connecting piece is rotatably connected to the bottom of the pressing piece, and a plurality of pressing blocks 15 are evenly and fixedly connected to the bottom of the connecting piece, and the pressing blocks 15 match the long inclined grooves 13, and the inclined surfaces of the plurality of long inclined grooves 13 are all arranged on a side close to the positioning block 2, and the pressing inclined surfaces of the plurality of pressing blocks 15 are all arranged on a side close to the positioning block 2, and the pressing piece and the connecting piece cooperate to drive the pressing blocks 15 to move.

[0026] A limiting groove 12 is provided on one side of the outer surface of the multiple pressure blocks 15, and the inner parts of the multiple limiting grooves 12 are slidably connected to the limiting blocks 11. Abutment blocks 5 are fixedly connected to one side of the outer surfaces of the multiple limiting blocks 11, and the abutment blocks 5 abut against the adjacent reinforcement parts 6. The cooperation between the limiting blocks 11 and the limiting grooves 12 can ensure the stability of the movement of the pressure blocks 15, and the abutment blocks 5 have a limiting effect on the insertion depth of the blades.

[0027] The pressing piece includes a hexagonal ring 3, and the hexagonal ring 3 abuts against the swivel 1, the bottom of the hexagonal ring 3 is fixedly connected with a connecting ring 7, and the connecting ring 7 is threadedly connected to the inner wall of the installation cavity 10, the connecting piece includes a movable ring 9, and the movable ring 9 is rotatably installed at the bottom of the connecting ring 7, the bottom of the movable ring 9 is fixedly connected with a mounting ring 8, and the mounting ring 8 is fixedly connected to the pressing block 15, and the tightening direction of the connecting ring 7 is consistent with the rotation direction of the impeller, thereby ensuring the tightness of the connection between the connecting ring 7 and the installation cavity 10.

[0028] A plurality of positioning blocks 2 are fixedly connected to the inner surface of the swivel 1 , which is beneficial to the installation of the swivel 1 .

[0029] Working principle: when one of the blades needs to be replaced, the hexagonal ring 3 is screwed, and the hexagonal ring 3 drives the connecting ring 7 and the movable ring 9 to rise, and then the movable ring 9 drives the mounting ring 8 and each pressing block 15 to rise, and the limit block 11 cooperates with the limit groove 12 to ensure the stability of the rising of the pressing block 15 until the pressing block 15 is separated from the long inclined groove 13, and then the damaged blade is pulled out, and then the new blade is inserted, and then the hexagonal ring 3 is rotated in the opposite direction, and the hexagonal ring 3 drives the pressing block 15 to be pressed into the long inclined groove 13 through various components until the hexagonal ring 3 is completely tightened, thereby completing the replacement of the blade.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A submersible electric pump impeller, comprising a swivel (1), characterized in that: The interior of the swivel (1) is provided with an installation cavity (10); the outer surface of the swivel (1) is evenly provided with a plurality of positioning holes (14), and the positioning holes (14) are connected to the installation cavity (10); blades are sealed and inserted in the plurality of positioning holes (14); and a long oblique groove (13) is provided on one side of the outer surface of the plurality of blades; The top of the swivel (1) is provided with a compression piece that penetrates the installation cavity (10), and the compression piece is threadedly connected to the inner wall of the installation cavity (10), the bottom of the compression piece is rotatably connected to a connecting piece, and the bottom of the connecting piece is evenly and fixedly connected to a plurality of compression blocks (15), and the compression blocks (15) match the long inclined groove (13).

2. The impeller guide wheel of the submersible electric pump according to claim 1, characterized in that: The plurality of blades each comprise a use portion (4) and a reinforcement portion (6), the positioning insertion hole (14) matches the reinforcement portion (6), and the long oblique groove (13) is provided on one side of the outer surface of the reinforcement portion (6).

3. The impeller guide wheel of the submersible electric pump according to claim 1, characterized in that: The pressing piece comprises a hexagonal ring (3), and the hexagonal ring (3) abuts against the swivel (1); a connecting ring (7) is fixedly connected to the bottom of the hexagonal ring (3), and the connecting ring (7) is threadedly connected to the inner wall of the installation cavity (10).

4. The impeller guide wheel of the submersible electric pump according to claim 3 is characterized in that: The connecting member comprises a movable ring (9), and the movable ring (9) is rotatably mounted on the bottom of the connecting ring (7), the bottom of the movable ring (9) is fixedly connected with a mounting ring (8), and the mounting ring (8) is fixedly connected to the pressing block (15).

5. The impeller guide wheel of the submersible electric pump according to claim 2, characterized in that: A limiting groove (12) is provided on one side of the outer surface of the plurality of pressing blocks (15), the interiors of the plurality of limiting grooves (12) are slidably connected to the limiting blocks (11), and abutment blocks (5) are fixedly connected to one side of the outer surface of the plurality of limiting blocks (11), and the abutment blocks (5) abut against the adjacent reinforcement portion (6).

6. The impeller guide wheel of the submersible electric pump according to claim 1, characterized in that: A plurality of positioning blocks (2) are fixedly connected to the inner surface of the rotating body (1).

7. The impeller guide wheel of the submersible electric pump according to claim 6, characterized in that: The inclined surfaces of the plurality of long inclined grooves (13) are all arranged on a side close to the positioning block (2), and the pressing inclined surfaces of the plurality of pressing blocks (15) are all arranged on a side close to the positioning block (2).

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