Electric submersible screw pump protection device

Abstract

The utility model provides an electric submersible screw pump protection device, and belongs to the technical field of electric submersible screw pumps. The electric submersible screw pump protection device comprises a protection assembly and a supporting assembly, firstly, a screw pump body is located in a protection shell, the screw pump body can be protected through the protection shell, the screw pump body cannot be directly exposed in an underground oil pipe, and then a good protection effect can be provided for the screw pump body; the service life of the screw pump body can be prolonged, the use stability of the screw pump body can be improved, the protective shell is slidably clamped to the base through the elastic clamping pieces, the protective shell can be conveniently disassembled and assembled in a clamping connection mode, the multiple elastic bases are arranged on the two sides of the protective shell, the supporting plates are fixedly connected with the elastic bases, and the service life of the screw pump body is prolonged. And the supporting plate is always tightly attached to the interior of the underground oil pipe through the elastic force of the elastic seat, so that the stability of the screw pump body is improved, the screw pump body is conveniently protected, and the practicability is improved.

Description

Technical Field

[0001] The present application relates to the field of electric submersible screw pumps, and in particular, to a protection device for electric submersible screw pumps. Background Art

[0002] The electric submersible screw pump oil production system utilizes the downhole submersible motor to directly drive the screw pump to lift the liquid. It combines the advantages of the rodless oil production system, downhole motor drive and screw pump. Compared with the rod pump, it can save energy by 30% to 60%, and can exceed the pumping depth of the rod pump. It can be applied to heavy oil wells, sand wells, gas wells, inclined wells and horizontal wells. However, the existing electric submersible screw pump protection device usually locates the electric submersible screw pump at the lower end of the downhole oil pipe, and the electric submersible screw pump is exposed to the outside for a long time, which will accelerate the aging of the electric submersible screw pump, reduce the service life of the electric submersible screw pump, and is inconvenient to protect the electric submersible screw pump, thereby reducing its practicality. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides an electric submersible screw pump protection device, which aims to improve the existing electric submersible screw pump protection device. Usually, the electric submersible screw pump is located at the lower end of the downhole oil pipe, and the electric submersible screw pump is exposed to the outside for a long time, which will accelerate the aging of the electric submersible screw pump and reduce the service life of the electric submersible screw pump. It is inconvenient to protect the electric submersible screw pump, thereby reducing the practicality problem.

[0004] An embodiment of the present application provides an electric submersible screw pump protection device including a protection component and a support component.

[0005] The protective assembly includes a base, a screw pump body, an elastic clip and a protective shell. The screw pump body is arranged on one side of the base, and the elastic clip is correspondingly arranged inside the base. The protective shell is slidably connected to the base through the elastic clip. The supporting assembly includes an elastic seat and a supporting plate. Several elastic seats are arranged on both sides of the protective shell, and the support plate is fixedly connected to the elastic seat.

[0006] In a specific embodiment, a limiting groove is correspondingly provided on one side of the base.

[0007] In the above implementation process, a limiting groove is correspondingly provided on one side of the base, and the limiting groove can play a limiting role.

[0008] In a specific implementation, the elastic clamp includes a cylinder, a curved surface block and a first spring, the curved surface block is slidably connected to the cylinder, the first spring is arranged inside the cylinder, and the first spring is fixedly connected to the curved surface block.

[0009] In the above implementation process, the arc surface block and the first spring can play a clamping role.

[0010] In a specific embodiment, a cavity is provided inside the cylinder, and the arc surface block is slidably connected to the cavity.

[0011] In the above implementation process, a cavity is provided inside the cylinder, and the cavity can play a role of limiting.

[0012] In a specific implementation manner, a limiting block is correspondingly provided on one side of the protective shell, and the limiting block is slidably connected to the limiting groove.

[0013] In the above implementation process, a limiting block is correspondingly provided on one side of the protective shell, and the limiting block can play a connecting role.

[0014] In a specific implementation manner, a groove is provided on one side of the limiting block, and the arc surface block contacts the groove.

[0015] In the above implementation process, a groove is provided on one side of the limit block. When the protective shell needs to be disassembled, the user can pull the protective shell so that the groove squeezes the arc surface block, and then the arc surface block moves toward the inside of the cylinder, so that the groove and the arc surface block are misaligned, and then the protective shell can be pulled to drive the limit block to move from the inside of the limit groove, and the opposite operation can be performed to install it.

[0016] In a specific embodiment, the elastic seat includes a fixed shell, a support block and a second spring, the support block is slidably connected to the fixed shell, the second spring is arranged inside the fixed shell, and the second spring is fixedly connected to the support block.

[0017] In the above implementation process, the elastic force of the second spring can ensure that the support plate is always in close contact with the downhole oil pipe.

[0018] In a specific implementation manner, a slide groove is provided inside the fixed shell, and the support block is slidably connected to the slide groove.

[0019] In the above implementation process, a slide groove is provided inside the fixed shell, and the slide groove can play a role of limiting.

[0020] Compared with the prior art, the present application has the following beneficial effects: first, the screw pump body is located inside the protective shell, and the protective shell can protect the screw pump body, so that the screw pump body will not be directly exposed to the downhole oil pipe, thereby providing a good protective effect for the screw pump body, and can improve the service life of the screw pump body and the stability during use. Since the protective shell is slidably connected to the base through elastic clips, the snap-on connection method is convenient for disassembly and installation of the protective shell, and the elastic force of the elastic seat makes the support plate always close to the downhole oil pipe, thereby improving the stability of the screw pump body, and then facilitating the protection of the screw pump body, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a submersible screw pump protection device from a first perspective provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of the elastic clip provided in the embodiment of the present application from a second viewing angle;

[0024] Figure 3 A schematic diagram of the protective shell structure provided in the embodiment of the present application;

[0025] Figure 4 This is a schematic structural diagram of the elastic seat from a third perspective provided in an embodiment of the present application.

[0026] In the figure: 100-protection component; 110-base; 111-limiting groove; 120-screw pump body; 130-elastic clamp; 131-cylinder; 1311-cavity; 132-arc block; 133-first spring; 140-protection shell; 141-limiting block; 142-groove; 200-support component; 210-elastic seat; 211-fixed shell; 2111-slide groove; 212-support block; 213-second spring; 220-support plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0028] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] See also Figure 1-4 The present application provides an electric submersible screw pump protection device including a protection component 100 and a support component 200. The protection component 100 can play a protective role, and the support component 200 can improve stability.

[0030] See also Figure 1-3 The protective assembly 100 includes a base 110, a screw pump body 120, an elastic clamp 130 and a protective shell 140. The screw pump body 120 is arranged on one side of the base 110, and the elastic clamp 130 is correspondingly arranged inside the base 110. The protective shell 140 is slidably connected with the base 110 through the elastic clamp 130. A limiting groove 111 is correspondingly arranged on one side of the base 110. The setting of the limiting groove 111 can play a limiting role. The elastic clamp 130 includes a cylinder 131, an arc block 132 and a first spring 133. The arc block 132 is slidably connected to the cylinder 131. The first spring 133 is arranged inside the cylinder 131. The first spring 133 is fixedly connected to the arc block 132, and the arc block 132 and the first spring 133 can play a clamping role.

[0031] In some specific implementation schemes, a cavity 1311 is provided inside the cylinder 131, and the arc block 132 is slidably connected to the cavity 1311. The cavity 1311 can play a limiting role. A limiting block 141 is correspondingly provided on one side of the protective shell 140, and the limiting block 141 is slidably connected to the limiting groove 111. The limiting block 141 can play a connecting role. A groove 142 is provided on one side of the limiting block 141, and the arc block 132 is in contact with the groove 142. When the protective shell 140 needs to be disassembled, the user can pull the protective shell 140 so that the groove 142 squeezes the arc block 132, and then the arc block 132 moves toward the inside of the cylinder 131, so that the groove 142 and the arc block 132 are misaligned, and then the protective shell 140 can be pulled to drive the limiting block 141 to move from the inside of the limiting groove 111, and the opposite operation can be used to install it.

[0032] See also Figure 1 and Figure 4 The support assembly 200 includes an elastic seat 210 and a support plate 220. Several elastic seats 210 are arranged on both sides of the protective shell 140. The support plate 220 is fixedly connected to the elastic seat 210. The elastic seat 210 includes a fixed shell 211, a support block 212 and a second spring 213. The support block 212 is slidably connected to the fixed shell 211. The second spring 213 is arranged inside the fixed shell 211. The second spring 213 is fixedly connected to the support block 212. The elastic force of the second spring 213 can make the support plate 220 always close to the downhole oil pipe. A slide groove 2111 is arranged inside the fixed shell 211. The support block 212 is slidably connected to the slide groove 2111. The slide groove 2111 can play a limiting role.

[0033] The working principle of the electric submersible screw pump protection device is as follows: first, the screw pump body 120 is located inside the protective shell 140, and the protective shell 140 can protect the screw pump body 120, so that the screw pump body 120 will not be directly exposed to the downhole oil pipe, thereby providing a good protective effect for the screw pump body 120, and can improve the service life of the screw pump body 120 and the stability during use. When the protective shell 140 needs to be disassembled, the user can pull the protective shell 140 so that the groove 142 squeezes the arc surface block 132. Then the arc block 132 moves toward the inside of the cylinder 131, so that the groove 142 is misaligned with the arc block 132, and then the protective shell 140 can be pulled to drive the limit block 141 to move from the inside of the limit groove 111, and the reverse operation can be used to install it. The snap-on connection method is convenient for disassembly and installation of the protective shell 140, and the elastic force of the elastic seat 210 ensures that the support plate 220 is always in close contact with the downhole oil pipe, thereby improving the stability of the screw pump body 120, and then facilitating the protection of the screw pump body 120, thereby improving practicality.

[0034] It should be noted that the specific model and specifications of the screw pump body 120 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0035] The power supply and principle of the screw pump body 120 are clear to those skilled in the art and will not be described in detail here.

[0036] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A protection device for an electric submersible screw pump, characterized in that: include A protection component (100), the protection component (100) comprising a base (110), a screw pump body (120), an elastic clamp (130) and a protection shell (140), the screw pump body (120) being arranged on one side of the base (110), the elastic clamp (130) being correspondingly arranged inside the base (110), and the protection shell (140) being slidably clamped with the base (110) via the elastic clamp (130); A support assembly (200), the support assembly (200) comprising an elastic seat (210) and a support plate (220), a plurality of the elastic seats (210) being arranged on both sides of the protective shell (140), and the support plate (220) being fixedly connected to the elastic seat (210).

2. The electric submersible screw pump protection device according to claim 1, characterized in that: A limiting groove (111) is correspondingly provided on one side of the base (110).

3. The electric submersible screw pump protection device according to claim 2, characterized in that: The elastic clamp (130) comprises a cylinder (131), a curved surface block (132) and a first spring (133); the curved surface block (132) is slidably connected to the cylinder (131); the first spring (133) is arranged inside the cylinder (131); and the first spring (133) is fixedly connected to the curved surface block (132).

4. The electric submersible screw pump protection device according to claim 3, characterized in that: A cavity (1311) is provided inside the cylinder (131), and the arc surface block (132) is slidably connected to the cavity (1311).

5. The electric submersible screw pump protection device according to claim 4, characterized in that: A limiting block (141) is correspondingly arranged on one side of the protective shell (140), and the limiting block (141) is slidably connected to the limiting groove (111).

6. The electric submersible screw pump protection device according to claim 5, characterized in that: A groove (142) is provided on one side of the limiting block (141), and the arc surface block (132) is in contact with the groove (142).

7. The electric submersible screw pump protection device according to claim 1, characterized in that: The elastic seat (210) comprises a fixed shell (211), a support block (212) and a second spring (213); the support block (212) is slidably connected to the fixed shell (211); the second spring (213) is arranged inside the fixed shell (211); and the second spring (213) is fixedly connected to the support block (212).

8. The electric submersible screw pump protection device according to claim 7, characterized in that: A sliding groove (2111) is provided inside the fixed shell (211), and the support block (212) is slidably connected to the sliding groove (2111).

Images