Suction inlet structure of electric submersible pump

Abstract

The utility model discloses an electric submersible pump suction inlet structure which comprises an electric submersible pump body, a filtering assembly is detachably installed at the suction end of the bottom of the electric submersible pump body, and the filtering assembly comprises a first flange plate, a supporting ring fixed to the bottom of the first flange plate and a supporting seat. A loophole-shaped steel gauze cylinder is fixedly arranged between the supporting ring and the supporting seat in a welded mode, a circular groove is formed in the middle of the bottom end of the supporting seat, a cleaning assembly used for cleaning attachments on the loophole-shaped steel gauze cylinder is fixedly arranged in the circular groove, and the cleaning assembly comprises a waterproof motor fixedly installed in the circular groove; a supporting arm is fixedly arranged on a motor shaft of the waterproof motor, and scraping ribs attached to the outer edge face of the loophole-shaped steel gauze cylinder are arranged at the two ends of the supporting base correspondingly. According to the suction inlet structure of the electric submersible pump, impurities in crude oil can be filtered, so that the situation that the suction end is blocked is avoided, the working efficiency of the electric submersible pump is improved, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil production equipment, and in particular relates to a suction port structure of a submersible electric pump. Background Art

[0002] As an efficient and economical mechanical oil production equipment, submersible pumps have the characteristics of large displacement, large head range, large production pressure difference, strong adaptability and significant economic benefits. With the increasing maturity of submersible pump technology, submersible pumps are widely used in offshore platform oil production. The difficulty of offshore platform oil production is gradually increasing, and the requirements for the suction and pumping performance of submersible pumps are more stringent.

[0003] At present, in the process of crude oil extraction, the composition of downhole liquid is complex. In addition to crude oil, water, polymers, it also contains other chemical substances, such as carbonate and sulfate scaling. High-viscosity polymers or scaling substances can easily lead to blockage of the suction port of the submersible pump, poor suction, and discontinuous operation, thus affecting the working effect of the submersible pump and reducing its practicality. Utility Model Content

[0004] The utility model aims to provide a submersible electric pump suction port structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A submersible electric pump suction port structure, comprising a submersible electric pump body;

[0007] A filter assembly is detachably mounted at the suction end at the bottom of the submersible electric pump body, and the filter assembly includes a flange plate 1, a support ring fixed to the bottom of the flange plate 1, and a support seat, and a leaky steel mesh cylinder is welded and fixed between the support ring and the support seat;

[0008] A circular groove is provided in the center of the bottom end of the support seat, and a cleaning component for cleaning attachments on the hole-shaped steel mesh cylinder is fixedly arranged in the circular groove.

[0009] Furthermore, the cleaning assembly includes a waterproof motor fixedly installed in the circular groove, and a support arm is fixedly arranged on the motor shaft of the waterproof motor.

[0010] Furthermore, both ends of the support seat are constructed with scraping ribs that fit on the outer edge surface of the hole-shaped steel mesh tube, and the top end of the scraping ribs is constructed with a sliding seat.

[0011] Furthermore, a guide key is centrally configured on one side of the slide seat, and an annular guide groove for the guide key to slide is centrally provided on the outer edge surface of the support ring.

[0012] Further, a plurality of circular holes are formed in the top end of the first flange in an annular array, and fixing bolts threadedly connected to the submersible electric pump main body are movably arranged in the plurality of circular holes.

[0013] Further, a second flange is fixedly installed at the top end of the submersible electric pump main body, and a plurality of through holes are formed in the top end of the second flange in an annular array.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Benefiting from the arrangement of the filtering component at the bottom of the submersible electric pump main body, the crude oil is filtered through the leaky steel wire mesh cylinder installed between the support seat and the support ring, so as to prevent impurities from entering the suction end of the submersible electric pump main body, avoid the occurrence of blockage of the suction end, improve the working efficiency of the submersible electric pump, and has strong practicability;

[0016] Benefiting from the arrangement of the cleaning component, by starting the waterproof motor to drive the support arm to rotate, two scraping ribs are driven to slide on the outer edge surface of the leaky steel wire mesh cylinder, so as to clean the impurities attached to the outer edge surface of the leaky steel wire mesh cylinder, thereby ensuring the passing efficiency of the crude oil and having strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a disassembled schematic diagram of the utility model;

[0019] Figure 3 is a schematic structural diagram of the filtering component of the utility model;

[0020] Figure 4 is a schematic structural diagram of the cleaning component of the utility model.

[0021] In the figure: 1. Submersible electric pump main body; 2. Filtering component; 201. First flange; 202. Support ring; 203. Support seat; 204. Leaky steel wire mesh cylinder; 205. Annular guide groove; 3. Cleaning component; 301. Waterproof motor; 302. Support arm; 303. Scraping rib; 304. Slide seat; 305. Guide key; 4. Second flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieving purposes and effects achieved by the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0023] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, a submersible electric pump suction inlet structure includes a submersible electric pump main body 1. A filtering component 2 is detachably installed at the suction end of the bottom of the submersible electric pump main body 1. The filtering component 2 includes a first flange 201, a support ring 202 fixed to the bottom of the first flange 201, and a support seat 203. A leaky steel wire mesh cylinder 204 is fixedly arranged by welding between the support ring 202 and the support seat 203. A circular groove is centrally opened at the bottom end of the support seat 203, and a cleaning component 3 for cleaning the attachments on the leaky steel wire mesh cylinder 204 is fixedly arranged in the circular groove. The crude oil is filtered by the leaky steel wire mesh cylinder 204 installed between the support seat 203 and the support ring 202, so as to prevent impurities from entering the suction end of the submersible electric pump main body 1, avoid the occurrence of blockage at the suction end, improve the working efficiency of the submersible electric pump, and has strong practicability.

[0024] As Figure 1 , Figure 3 , Figure 4 shown in the figure, wherein, the cleaning component 3 includes a waterproof motor 301 fixedly installed in the circular groove. A support arm 302 is fixedly arranged on the motor shaft of the waterproof motor 301. Scraping ribs 303 attached to the outer edge surface of the leaky steel wire mesh cylinder 204 are constructed at both ends of the support seat 203, and a sliding seat 304 is constructed at the top end of the scraping rib 303. A guiding key 305 is centrally constructed on one side of the sliding seat 304, and an annular guiding groove 205 for the guiding key 305 to slide is centrally opened on the outer edge surface of the support ring 202. A plurality of circular holes are annularly arranged at the top end of the first flange 201, and fixing bolts threadedly connected to the submersible electric pump main body 1 are movably arranged in the plurality of circular holes. A second flange 4 is fixedly installed at the top end of the submersible electric pump main body 1, and a plurality of through holes are annularly arranged at the top end of the second flange 4. By starting the waterproof motor 301 to drive the support arm 302 to rotate, the two scraping ribs 303 are driven to slide on the outer edge surface of the leaky steel wire mesh cylinder 204, so as to clean the impurities attached to the outer edge surface of the leaky steel wire mesh cylinder 204, thereby ensuring the passing efficiency of the crude oil and having strong practicability.

[0025] Working principle: For the suction inlet structure of the submersible electric pump, during use, multiple pre-prepared bolts are respectively passed through multiple through holes on the flange 4 and screwed into the designated positions, thus completing the fixed installation of the submersible electric pump main body 1. Then, the submersible electric pump main body 1 is started to extract crude oil. During the extraction process, the crude oil is filtered through the leaky steel wire mesh cylinder 204 installed between the support base 203 and the support ring 202, so as to prevent impurities from entering the suction end of the submersible electric pump main body 1 and avoid the occurrence of suction end blockage. Then, the waterproof motor 301 is started to drive the support arm 302 to rotate, thereby driving the two scraping ribs 303 to slide on the outer edge surface of the leaky steel wire mesh cylinder 204, so as to clean the impurities attached to the outer edge surface of the leaky steel wire mesh cylinder 204, thus ensuring the passing efficiency of the crude oil and being convenient to use.

[0026] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A submersible electric pump suction port structure, comprising a submersible electric pump body (1); Features: A filter assembly (2) is detachably mounted at the suction end at the bottom of the submersible electric pump body (1), the filter assembly (2) comprising a flange (201), a support ring (202) fixed to the bottom of the flange (201), and a support seat (203), a hole-shaped steel mesh cylinder (204) being welded and fixed between the support ring (202) and the support seat (203); A circular groove is provided in the center of the bottom end of the support seat (203), and a cleaning component (3) for cleaning attachments on the hole-shaped steel mesh cylinder (204) is fixedly arranged in the circular groove.

2. A submersible electric pump suction port structure according to claim 1, characterized in that: The cleaning assembly (3) comprises a waterproof motor (301) fixedly mounted in a circular groove, and a support arm (302) is fixedly arranged on the motor shaft of the waterproof motor (301).

3. A submersible electric pump suction port structure according to claim 2, characterized in that: Both ends of the support seat (203) are constructed with scraping ribs (303) that fit on the outer edge surface of the hole-shaped steel mesh cylinder (204), and the top end of the scraping rib (303) is constructed with a sliding seat (304).

4. A submersible electric pump suction port structure according to claim 3, characterized in that: A guide key (305) is centrally configured on one side of the slide seat (304), and an annular guide groove (205) for the guide key (305) to slide is centrally provided on the outer edge surface of the support ring (202).

5. The suction port structure of a submersible electric pump according to claim 1, characterized in that: The top of the flange plate 1 (201) is provided with a plurality of circular holes in a circular array, and fixing bolts which are threadedly connected to the submersible electric pump body (1) are movably arranged in the plurality of circular holes.

6. The suction port structure of a submersible electric pump according to claim 1, characterized in that: A flange plate 2 (4) is fixedly mounted on the top of the submersible electric pump body (1), and a plurality of through holes are formed in a circular array on the top of the flange plate 2 (4).

Images