Hollow sucker rod

Abstract

The utility model relates to the technical field of oil pumping equipment, and discloses a hollow sucker rod which comprises a pipeline body, a hemispherical filter screen is fixedly installed in the pipeline body, the hemispherical filter screen is a hollow hemispherical filter screen, and the interior of the hemispherical filter screen is movably connected with a rotatable spherical filter screen through a bearing. According to the oil filter disclosed by the utility model, when oil passes through the hemispherical filter screen and the spherical filter screen, the spherical filter screen can rotate in the hemispherical filter screen under the driving of the flowing speed of the oil, and along with the rotation of the spherical filter screen, when the brush passes through the space between the hemispherical filter screen and the spherical filter screen, the brush can clean impurities attached to the hemispherical filter screen; the oil is influenced by the Bernoulli principle when passing through the drainage block, so that the flowing speed of the oil can be increased, the speed of driving the spherical filter screen to rotate by the oil is increased, the speed of cleaning sundries on the hemispherical filter screen by the brush is further guaranteed, the problem that the production schedule is influenced due to the fact that the hemispherical filter screen is blocked by the sundries during use is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumping equipment, in particular to a hollow oil pumping rod. Background Art

[0002] Oil well pumping tubing is the pipe used to extract oil from oil wells. It's typically made of steel pipe, possessing the strength and corrosion resistance to withstand the high pressure and corrosive environment found downhole. Its primary function is to pump oil from the well bottom to the surface. The pumping tubing operates by reciprocating the pumping unit, driving the pump's plunger up and down within the tubing, drawing oil from the well bottom into the tubing and discharging it to the surface.

[0003] Because there are foreign objects of varying sizes in the oil field, they need to be filtered during the extraction process using a pumping rod. However, during the extraction process of existing pumping rods, foreign objects can easily clog the filter screen, making it difficult to carry out normal oil extraction. This can cause downtime and significantly reduce work efficiency. To address this issue, we propose a hollow pumping rod. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a hollow sucker rod to solve the above problems.

[0005] Technical Solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hollow sucker rod, comprising a pipe body, a hemispherical filter fixedly installed inside the pipe body, the hemispherical filter is a hemispherical filter with a hollow interior, the interior of the hemispherical filter is movably connected to a rotatable spherical filter through a bearing, the spherical filter is a spherical filter with a hollow interior, a brush fixedly installed on the outer wall of the spherical filter, the brush being a quarter-sphere arc-shaped brush.

[0007] Preferably, a drainage block is provided inside the pipeline body on the oil inlet side, and the drainage block is fixedly connected to the inside of the pipeline body through two fixed blocks. The drainage block is located on the rear side of the hemispherical filter, and a drainage groove is provided on the drainage block. The outer ring diameter of the drainage block gradually decreases from front to back, and the inner ring diameter of the drainage groove gradually increases from front to back.

[0008] Preferably, a connecting block is fixedly connected to the rear side wall of the pipe body, the connecting block is an arc-shaped L-shaped block, and an auxiliary limiting groove is provided on the side wall of the connecting block close to the pipe body.

[0009] Preferably, a connecting groove is provided on the front side wall of the pipe body, and the internal shape and size of the connecting groove are adapted to the shape and size of the connecting block. A sliding hole is provided on the outer wall of the pipe body at a position corresponding to the connecting groove, and a limiting block is provided at a position corresponding to the sliding hole on the outer side of the pipe body. The lower end of the limiting block passes through the interior of the sliding hole and enters the interior of the connecting groove. A clamping block is fixedly connected to one end of the limiting block located inside the connecting groove. The limiting block is composed of an arc block and a cylindrical block, wherein the shape and size of the cylindrical block on the limiting block are adapted to the shape and size inside the auxiliary limiting groove.

[0010] Preferably, an extrusion ring is threadedly connected to the outer wall of the pipe body, the extrusion ring is located at the front side of the limit block, and the rear side wall of the extrusion ring contacts the front side wall of the arc block on the limit block.

[0011] Preferably, a sealing ring is fixedly mounted on the front side wall of the pipe body, and a sealing groove is provided on the rear side wall of the pipe body at a position corresponding to the sealing ring.

[0012] Preferably, the maximum diameter of the outer ring on the sealing ring is greater than the maximum diameter of the inner ring inside the sealing groove.

[0013] Beneficial effects

[0014] Compared with the prior art, the present invention provides a hollow sucker rod with the following beneficial effects:

[0015] 1. When the oil is pumped through the pipeline body, when the oil passes through the hemispherical filter and the spherical filter, the spherical filter will rotate inside the hemispherical filter driven by the oil flow rate. As the spherical filter rotates, when the brush passes between the hemispherical filter and the spherical filter, the brush will clean the debris attached to the hemispherical filter. In addition, when the oil passes through the drainage block, it is affected by the Bernoulli principle, which can accelerate the flow rate of the oil, thereby increasing the rate at which the oil drives the spherical filter to rotate, further ensuring the speed at which the brush cleans the debris on the hemispherical filter, avoiding the problem of the hemispherical filter being blocked by debris during use and affecting the production progress, thereby improving work efficiency.

[0016] 2. When assembling the two pipe bodies, the connecting block on the front pipe body can be inserted into the connecting groove on the rear pipe body, and then the front pipe body can be rotated clockwise so that the position of the auxiliary limiting groove on the front connecting block corresponds to the front and back of the cylindrical block on the internal limiting block of the rear sliding hole. Finally, the extrusion ring on the rear pipe body is rotated so that the extrusion ring moves backward on the rear pipe body to extrude the limiting block, so that the limiting block moves backward and the cylindrical block on the limiting block is engaged with the inner part of the auxiliary limiting groove. At this time, the connecting block on the front pipe body is squeezed by the upper limiting block of the rear pipe body, so that the front pipe body and the rear pipe body are tightly fitted together, thereby completing the installation between the two pipe bodies. If the two pipe bodies need to be disassembled, only the extrusion ring needs to be rotated in the opposite direction so that the extrusion ring is no longer in the extrusion limiting block, and the front connecting block can be taken out from the inside of the rear connecting groove to complete the disassembly. The operation is simple and convenient to use.

[0017] 3. When the two pipe bodies are assembled together, the sealing ring on the rear pipe body will enter the interior of the sealing groove on the front pipe body. Since the maximum diameter of the outer ring on the sealing ring is larger than the maximum diameter of the inner ring inside the sealing groove, the sealing ring will be deformed by force after entering the sealing groove and maintain a tight fit inside the sealing groove, thereby ensuring the sealing of the two pipe bodies when connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 It is a partial perspective view of the utility model;

[0020] Figure 3 This is a half-section diagram of the utility model;

[0021] Figure 4 This is a three-dimensional diagram of the connection block of the utility model;

[0022] Figure 5 This is a three-dimensional diagram of the fixing block of the utility model;

[0023] Figure 6 For this utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 7 For this utility model Figure 3 Enlarged view of point B in the middle.

[0025] In the figure: 1. Pipe body; 2. Connecting block; 3. Auxiliary limiting groove; 4. Connecting groove; 5. Sliding hole; 6. Limiting block; 7. Clamping block; 8. Extrusion ring; 9. Sealing ring; 10. Sealing groove; 11. Hemispherical filter; 12. Spherical filter; 13. Brush; 14. Drainage block; 15. Fixing block; 16. Drainage groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-7 A hollow sucker rod comprises a pipe body 1, a hemispherical filter 11 is fixedly installed inside the pipe body 1, the hemispherical filter 11 is a hemispherical filter with a hollow interior, a rotatable spherical filter 12 is movably connected to the interior of the hemispherical filter 11 through a bearing, the spherical filter 12 is a spherical filter with a hollow interior, a brush 13 is fixedly installed on the outer wall of the spherical filter 12, the brush 13 is a quarter-sphere arc-shaped brush, the existence of the brush 13 can increase the contact area between the spherical filter 12 and the oil, thereby ensuring that the oil passes through the spherical filter When the net 12 is rotated, the spherical filter 12 can be driven to rotate. When the brush 13 is located between the hemispherical filter 11 and the spherical filter 12, the brush 13 is in contact with the hemispherical filter 11. When oil is pumped through the pipeline body 1, when the oil passes through the hemispherical filter 11 and the spherical filter 12, the spherical filter 12 will rotate inside the hemispherical filter 11 driven by the oil flow rate. As the spherical filter 12 rotates, when the brush 13 passes between the hemispherical filter 11 and the spherical filter 12, the brush 13 will clean up the debris attached to the hemispherical filter 11.

[0028] A drainage block 14 is provided on the oil inlet side of the interior of the pipe body 1. The drainage block 14 is fixedly connected to the interior of the pipe body 1 through two fixing blocks 15. The drainage block 14 is located on the rear side of the hemispherical filter 11. A drainage groove 16 is provided on the drainage block 14. The outer ring diameter of the drainage block 14 gradually decreases from front to back, and the inner ring diameter of the drainage groove 16 gradually increases from front to back. Therefore, when the oil passes through the outside of the drainage block 14 or the inside of the drainage groove 16 on the drainage block 14, the flow rate of the oil will be accelerated.

[0029] A connecting block 2 is fixedly connected to the rear wall of the pipe body 1 . The connecting block 2 is an arc-shaped L-shaped block, and an auxiliary limiting groove 3 is provided on the wall of the connecting block 2 close to the pipe body 1 .

[0030] A connecting groove 4 is provided on the front side wall of the pipe body 1, and the internal shape and size of the connecting groove 4 are adapted to the shape and size of the connecting block 2. A sliding hole 5 is provided on the outer wall of the pipe body 1 at a position corresponding to the connecting groove 4. A limiting block 6 is provided at a position corresponding to the sliding hole 5 on the outer side of the pipe body 1. The lower end of the limiting block 6 passes through the interior of the sliding hole 5 and enters the interior of the connecting groove 4. A clamping block 7 is fixedly connected to one end of the limiting block 6 located inside the connecting groove 4. The clamping block 7 is an arc-shaped block, and the limiting block 6 can be movably clamped on the sliding hole 5 through the clamping block 7 to prevent the limiting block 6 from detaching from the interior of the sliding hole 5. The limiting block 6 is composed of an arc-shaped block and a cylindrical block, wherein the shape and size of the cylindrical block on the limiting block 6 are adapted to the shape and size of the interior of the auxiliary limiting groove 3.

[0031] The outer wall of the pipe body 1 is threadedly connected with an extrusion ring 8 , which is located in front of the limit block 6 , and the rear wall of the extrusion ring 8 contacts the front wall of the arc block on the limit block 6 .

[0032] A sealing ring 9 is fixedly mounted on the front side wall of the pipe body 1 , and a sealing groove 10 is provided on the rear side wall of the pipe body 1 at a position corresponding to the sealing ring 9 .

[0033] The maximum diameter of the outer ring on the sealing ring 9 is greater than the maximum diameter of the inner ring inside the sealing groove 10.

[0034] Working principle:

[0035] When oil is pumped through the pipeline body 1, when the oil passes through the hemispherical filter 11 and the spherical filter 12, the spherical filter 12 will rotate inside the hemispherical filter 11 driven by the oil flow rate. As the spherical filter 12 rotates, when the brush 13 passes between the hemispherical filter 11 and the spherical filter 12, the brush 13 will clean the debris attached to the hemispherical filter 11, and the oil is affected by the Bernoulli principle when passing through the drainage block 14, which can accelerate the flow rate of the oil, thereby increasing the rate at which the oil drives the spherical filter 12 to rotate, further ensuring the speed at which the brush 13 cleans the debris on the hemispherical filter 11, avoiding the problem of the hemispherical filter 11 being blocked by debris during use and affecting the production progress, thereby improving work efficiency.

[0036] When assembling the two pipe bodies 1, the connecting block 2 on the front pipe body 1 can be inserted into the connecting groove 4 on the rear pipe body 1, and then the front pipe body 1 is rotated clockwise so that the position of the auxiliary limiting groove 3 on the front connecting block 2 corresponds to the front and back of the cylindrical block on the limiting block 6 inside the rear sliding hole 5. Finally, the extrusion ring 8 on the rear pipe body 1 is rotated so that the extrusion ring 8 moves backward on the rear pipe body 1 to extrude the limiting block 6, so that the limiting block 6 moves backward and the cylindrical block on the limiting block 6 is engaged with the inner part of the auxiliary limiting groove 3. At this time, the connecting block 2 on the front pipe body 1 is squeezed by the upper limiting block 6 of the rear pipe body 1, so that the front pipe body 1 and the rear pipe body 1 are tightly fitted together, thereby completing the installation between the two pipe bodies 1. If the two pipe bodies 1 need to be disassembled, only the extrusion ring 8 needs to be rotated in the opposite direction so that the extrusion ring 8 is no longer in the extrusion limiting block 6, and the front connecting block 2 can be taken out from the inside of the rear connecting groove 4 to complete the disassembly. The operation is simple and convenient to use.

[0037] When the two pipe bodies 1 are assembled together, the sealing ring 9 on the rear pipe body 1 will enter the interior of the sealing groove 10 on the front pipe body 1, and since the maximum diameter of the outer ring on the sealing ring 9 is larger than the maximum diameter of the inner ring inside the sealing groove 10, after the sealing ring 9 enters the interior of the sealing groove 10, the sealing ring 9 is deformed by force and maintains a tight fit inside the sealing groove 10, thereby ensuring the sealing of the two pipe bodies 1 when connected.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow sucker rod, comprising a pipe body (1), characterized in that: A hemispherical filter (11) is fixedly installed inside the pipe body (1), and the hemispherical filter (11) is a hemispherical filter with a hollow interior. A rotatable spherical filter (12) is movably connected to the interior of the hemispherical filter (11) through a bearing, and the spherical filter (12) is a spherical filter with a hollow interior. A brush (13) is fixedly installed on the outer wall of the spherical filter (12), and the brush (13) is a quarter-sphere arc-shaped brush.

2. A hollow sucker rod according to claim 1, characterized in that: A drainage block (14) is provided inside the pipeline body (1) on the oil inlet side. The drainage block (14) is fixedly connected to the inside of the pipeline body (1) through two fixing blocks (15). The drainage block (14) is located on the rear side of the hemispherical filter (11). A drainage groove (16) is provided on the drainage block (14). The outer ring diameter of the drainage block (14) gradually decreases from front to back, and the inner ring diameter of the drainage groove (16) gradually increases from front to back.

3. The hollow sucker rod according to claim 1, characterized in that: A connecting block (2) is fixedly connected to the rear wall of the pipe body (1); the connecting block (2) is an arc-shaped L-shaped block, and an auxiliary limiting groove (3) is provided on the wall of the connecting block (2) close to the pipe body (1).

4. A hollow sucker rod according to claim 3, characterized in that: The front side wall of the pipe body (1) is provided with a connecting groove (4), the internal shape and size of the connecting groove (4) are adapted to the shape and size of the connecting block (2), the outer wall of the pipe body (1) is provided with a sliding hole (5) at a position corresponding to the connecting groove (4), and a limiting block (6) is provided on the outer side of the pipe body (1) at a position corresponding to the sliding hole (5), the lower end of the limiting block (6) passes through the interior of the sliding hole (5) and enters the interior of the connecting groove (4), and a clamping block (7) is fixedly connected to one end of the limiting block (6) located inside the connecting groove (4), and the limiting block (6) is composed of an arc block and a cylindrical block, wherein the shape and size of the cylindrical block on the limiting block (6) are adapted to the shape and size inside the auxiliary limiting groove (3).

5. The hollow sucker rod according to claim 4, characterized in that: The outer wall surface of the pipe body (1) is threadedly connected to an extrusion ring (8), the extrusion ring (8) is located on the front side of the limit block (6), and the rear side wall surface of the extrusion ring (8) is in contact with the front side wall surface of the arc block on the limit block (6).

6. The hollow sucker rod according to claim 1, characterized in that: A sealing ring (9) is fixedly mounted on the front side wall of the pipe body (1), and a sealing groove (10) is provided on the rear side wall of the pipe body (1) at a position corresponding to the sealing ring (9).

7. The hollow sucker rod according to claim 6, characterized in that: The maximum diameter of the outer ring on the sealing ring (9) is greater than the maximum diameter of the inner ring inside the sealing groove (10).

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