Coating anti-corrosion continuous sucker rod

Abstract

The utility model discloses a coating anti-corrosion continuous sucker rod, which belongs to the technical field of sucker rods and comprises a connecting column, connecting end blocks are symmetrically and fixedly mounted at two ends of the connecting column, connecting thread sleeves are symmetrically and rotatably mounted on the surface of the connecting column, and the connecting thread sleeves cover the surfaces of the connecting end blocks. Anti-corrosion sucker rods are symmetrically arranged at the two ends of the connecting column and located on the surfaces of the connecting end blocks. According to the coating anti-corrosion continuous sucker rod, the connecting column, the connecting screw sleeve and the connecting pipe are arranged, the connecting column is placed at one end of the anti-corrosion sucker rod, a second limiting clamping strip on the surface of a connecting end block corresponds to a first limiting inserting groove in the inner wall of the connecting pipe, and after the connecting end block is clamped to a port of the connecting pipe, the connecting screw pipe is screwed to rotate on the surface of the connecting pipe; therefore, the connecting end block is clamped and fixed in the connecting pipe, the anti-corrosion sucker rod can be connected with the connecting column, and anti-corrosion sucker rods with different lengths can be conveniently combined and connected at will according to oil pumping work requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of sucker rods, in particular to a coating anti-corrosion continuous sucker rod. Background Art

[0002] The continuous sucker rod is a key component in oil drilling equipment. During production, a layer of anti-corrosion coating will be covered on the surface of the continuous sucker rod, so that the continuous sucker rod has high strength, corrosion resistance and other characteristics. It can maintain stable performance for a long time in harsh working environments, which can improve the extraction efficiency of oil wells and reduce production costs.

[0003] The existing continuous sucker rods have different specific lengths according to the drilling requirements. The lengths of these continuous sucker rods are relatively long, and it is difficult to adjust the lengths of the continuous sucker rods according to the drilling depth. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the above defects, the utility model provides a coated anti-corrosion continuous sucker rod, which solves the problem that the existing continuous sucker rods have different specific lengths according to drilling needs and it is difficult to arbitrarily adjust the length of the continuous sucker rod according to the drilling depth.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coated anti-corrosion continuous sucker rod, comprising a connecting column, connecting end blocks are symmetrically fixedly installed at both ends of the connecting column, connecting screw sleeves are symmetrically rotatably installed on the surface of the connecting column, and the connecting screw sleeves cover the surface of the connecting end block, anti-corrosion sucker rods are symmetrically arranged on the surface of the connecting end block at both ends of the connecting column, a clamping ring is fixedly installed at the central position of the surface of the anti-corrosion sucker rod, anti-corrosion coatings are respectively provided on the surfaces of the anti-corrosion sucker rod on both sides of the clamping ring, connecting pipes are fixedly installed on both ends of the anti-corrosion sucker rod, and the connecting pipes are correspondingly clamped between the connecting end block and the connecting screw sleeve, and protective pipes are respectively slidably installed on the surfaces of the anti-corrosion sucker rod on both sides of the clamping ring.

[0006] As a further solution of the utility model: six groups of first limit strips are symmetrically and equiangularly fixedly installed on the surface of the anti-corrosion sucker rod on both sides of the clamping ring, and six groups of second limit slots are provided at equal angles on the inner wall of the protection tube, and the second limit slots correspond to the first limit strips.

[0007] As a further solution of the utility model: six groups of first limiting slots are provided at equal angles on the inner wall of the connecting tube, and six groups of second limiting strips are fixedly installed at equal angles on the surface of the connecting end block, and the second limiting strips correspond to the first limiting slots.

[0008] As a further solution of the utility model: a plurality of groups of anti-skid convex strips are evenly and fixedly installed on the surface of the connecting screw sleeve, and sealing rings are respectively provided on the surfaces of both ends of the anti-corrosion sucker rod between the protection tube and the connecting screw sleeve.

[0009] As a further solution of the utility model: annular grooves are symmetrically provided on both sides of the surface of the connecting column, and four groups of limiting sliders are fixedly installed at equal angles on one side of the inner wall of the connecting screw sleeve, and the limiting sliders correspond to the annular grooves.

[0010] As a further solution of the utility model: a connecting internal thread is provided on the side of the inner wall of the connecting screw sleeve away from the limiting slider, and a connecting external thread is provided on the surface of the connecting pipe, and the connecting internal thread corresponds to the connecting external thread.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The coated anti-corrosion continuous sucker rod is provided with a connecting column, a connecting screw sleeve and a connecting pipe. The connecting column is placed at one end of the anti-corrosion sucker rod, so that the second limit clamping strip on the surface of the connecting end block corresponds to the first limit slot on the inner wall of the connecting pipe. After the connecting end block is clamped at the port of the connecting pipe, the connecting screw sleeve is twisted to rotate on the surface of the connecting pipe, so that the connecting end block is clamped and fixed inside the connecting pipe, so that the anti-corrosion sucker rod can be connected to the connecting column, which is convenient for freely combining and connecting anti-corrosion sucker rods of different lengths according to the needs of oil pumping work.

[0013] 2. The coated anti-corrosion continuous sucker rod is provided with a first limit clip, a protective tube and a sealing ring. Before the anti-corrosion sucker rod and the connecting column are assembled and connected, the protective tube is sleeved on the surface of the anti-corrosion sucker rod so that the second limit slot on the inner wall of the protective tube corresponds to the surface of the first limit clip. Then, the sealing ring is sleeved on the surface of the anti-corrosion sucker rod at one end of the protective tube. The connecting sleeve is tightened to assemble the connecting column and the anti-corrosion sucker rod until the connecting sleeve presses and fixes the sealing ring on one end of the protective tube, so that the protective tube can be clamped and fixed on the surface of the anti-corrosion sucker rod, thereby protecting the surface of the anti-corrosion sucker rod and avoiding scratches left by surface friction of the anti-corrosion sucker rod during oil pumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a three-dimensional combined cross-sectional structure of a connecting column and two groups of anti-corrosion sucker rods of the utility model;

[0015] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the anti-corrosion sucker rod of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the connecting column and two sets of connecting end blocks of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the connection screw sleeve and the limit slider of the utility model;

[0018] Figure 5It is a three-dimensional structural schematic diagram of the protection tube of the utility model;

[0019] In the figure: 1. anti-corrosion sucker rod; 101. anti-corrosion coating; 2. clamping ring; 3. first limit clip; 4. connecting pipe; 5. connecting external thread; 6. first limit slot; 7. protective pipe; 8. second limit slot; 9. sealing ring; 10. connecting column; 11. annular slide groove; 12. connecting end block; 13. second limit clip; 14. connecting screw sleeve; 15. limit slider; 16. anti-slip convex strip; 17. connecting internal thread. DETAILED DESCRIPTION

[0020] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0021] like Figure 1-5 As shown, the utility model provides a technical solution: a coated anti-corrosion continuous sucker rod, including a connecting column 10, annular grooves 11 are symmetrically arranged on both sides of the surface of the connecting column 10, and four groups of limit sliders 15 are fixedly installed at equal angles on one side of the inner wall of the connecting screw sleeve 14, and the limit sliders 15 correspond to the annular grooves 11. By providing the limit sliders 15, when the connecting screw sleeve 14 is turned to rotate on the surface of the connecting column 10, the limit sliders 15 slide inside the corresponding annular grooves 11, thereby ensuring that the connecting screw sleeve 14 is stuck on the surface of the connecting column 10 and will not detach at will.

[0022] The two ends of the connecting column 10 are symmetrically fixed with connecting end blocks 12, and the surface of the connecting column 10 is symmetrically rotated with a connecting screw sleeve 14, and the connecting screw sleeve 14 covers the surface of the connecting end block 12. A plurality of groups of anti-skid convex strips 16 are evenly fixedly installed on the surface of the connecting screw sleeve 14. Because the anti-skid convex strips 16 are provided, when the connecting screw sleeve 14 is held and rotated, the anti-skid convex strips 16 contact with the palm to increase the friction between the palm and the palm, thereby avoiding hand slipping when twisting the connecting screw sleeve 14;

[0023] Sealing rings 9 are respectively provided on the surfaces of the two ends of the anti-corrosion sucker rod 1 located between the protection tube 7 and the connecting screw sleeve 14. By providing the sealing rings 9, when the sealing rings 9 are squeezed and deformed and stuck between the protection tube 7 and the connecting screw sleeve 14, it is ensured that the surfaces of the anti-corrosion sucker rod 1 located on both sides of the clamping ring 2 can be in a closed environment, and dust and oil during the oil pumping operation will not flow from the gap between the protection tube 7 and the connecting screw sleeve 14 to the surface of the anti-corrosion sucker rod 1.

[0024] The two ends of the connecting column 10 are symmetrically provided with anti-corrosion sucker rods 1 on the surface of the connecting end block 12, and a clamping ring 2 is fixedly installed at the central position of the surface of the anti-corrosion sucker rod 1. The surfaces of the anti-corrosion sucker rod 1 on both sides of the clamping ring 2 are respectively provided with anti-corrosion coatings 101. Due to the anti-corrosion coatings 101, when the corrosive liquid flows from the gap between the protective tube 7 and the clamping ring 2 or the connecting screw sleeve 14 to the surface of the anti-corrosion sucker rod 1, the corrosive liquid is prevented from directly contacting the surface of the anti-corrosion sucker rod 1, thereby improving the corrosion resistance of the anti-corrosion sucker rod 1 and ensuring the service life of the anti-corrosion sucker rod 1.

[0025] Connecting pipes 4 are fixedly installed at both ends of the anti-corrosion sucker rod 1, and the connecting pipes 4 are correspondingly stuck between the connecting end blocks 12 and the connecting screw sleeves 14. A connecting internal thread 17 is provided on the inner wall of the connecting screw sleeve 14 away from the limiting slider 15. A connecting external thread 5 is provided on the surface of the connecting pipe 4, and the connecting internal thread 17 corresponds to the connecting external thread 5. Because the connecting external thread 5 and the connecting internal thread 17 are provided, the connecting screw sleeve 14 is screwed so that the connecting internal thread 17 can engage with the connecting external thread 5, thereby tightening and fixing the connecting screw sleeve 14 on the surface of the connecting pipe 4.

[0026] Six groups of first limit slots 6 are provided at equal angles on the inner wall of the connecting pipe 4, and six groups of second limit strips 13 are fixedly installed at equal angles on the surface of the connecting end block 12, and the second limit strips 13 correspond to the first limit slots 6. Because the first limit slots 6 and the second limit strips 13 are provided, after the connecting end block 12 is inserted into the connecting pipe 4, the second limit strips 13 are stuck in the corresponding first limit slots 6, thereby ensuring that the anti-corrosion sucker rod 1 and the connecting column 10 will not rotate relative to each other after being connected and fixed.

[0027] The surfaces of the anti-corrosion sucker rod 1 on both sides of the clamp ring 2 are slidably mounted with protective tubes 7. Six groups of first limit clamping strips 3 are symmetrically and fixedly mounted at equal angles on the surfaces of the anti-corrosion sucker rod 1 on both sides of the clamp ring 2. Six groups of second limit slots 8 are arranged at equal angles on the inner wall of the protective tube 7, and the second limit slots 8 correspond to the first limit clamping strips 3. By providing the clamp ring 2 and the first limit clamping strip 3, when the protective tube 7 is sleeved on the surface of the anti-corrosion sucker rod 1 until it is tightly attached to the clamp ring 2, the first limit clamping strip 3 is clamped inside the corresponding second limit slot 8, thereby ensuring that the protective tube 7 does not rotate relative to the surface of the anti-corrosion sucker rod 1 when it is clamped.

[0028] The working principle of the utility model is:

[0029] Select a suitable number of anti-corrosion sucker rods 1 and connecting columns 10 according to the needs of use, put the protective tube 7 and the sealing ring 9 on the surface of the anti-corrosion sucker rod 1 accordingly, and then place the anti-corrosion sucker rod 1 and the connecting column 10 relative to each other, so that the second limit clamping strip 13 at one end of the connecting column 10 corresponds to the first limit slot 6, control the connecting column 10 to be close to the anti-corrosion sucker rod 1, so that the connecting end block 12 can be inserted into the connecting tube 4, and at the same time, turn the connecting screw sleeve 14 to make the connecting internal thread 17 rotate and engage on the surface of the connecting external thread 5 until the connecting end block 12 is completely inserted into the connecting tube 4, push and squeeze the protective tube 7 to fit tightly against one side of the clamping ring 2, so that the sealing ring 9 is squeezed and deformed between the protective tube 7 and the connecting screw sleeve 14, repeat the steps, and combine and connect multiple groups of anti-corrosion sucker rods 1 and connecting columns 10.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A coated anti-corrosion continuous pumping rod, comprising a connecting column (10), characterized in that: The two ends of the connecting column (10) are symmetrically fixedly installed with connecting end blocks (12), the surface of the connecting column (10) is symmetrically rotatably installed with connecting screw sleeves (14), and the connecting screw sleeves (14) cover the surface of the connecting end block (12), the two ends of the connecting column (10) are symmetrically provided with anti-corrosion sucker rods (1) on the surface of the connecting end block (12), a clamping ring (2) is fixedly installed at the central position of the surface of the anti-corrosion sucker rod (1), the surfaces of the anti-corrosion sucker rod (1) on both sides of the clamping ring (2) are respectively provided with anti-corrosion coatings (101), the two ends of the anti-corrosion sucker rod (1) are fixedly installed with connecting pipes (4), and the connecting pipes (4) are correspondingly clamped between the connecting end block (12) and the connecting screw sleeve (14), and the surfaces of the anti-corrosion sucker rod (1) on both sides of the clamping ring (2) are respectively slidably installed with protective pipes (7).

2. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: The anti-corrosion sucker rod (1) is provided with six groups of first limit clamping strips (3) symmetrically and fixedly mounted at equal angles on the surfaces of the two sides of the clamping ring (2); the inner wall of the protection tube (7) is provided with six groups of second limit slots (8) at equal angles, and the second limit slots (8) correspond to the first limit clamping strips (3).

3. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: The inner wall of the connecting pipe (4) is provided with six groups of first limiting slots (6) at equal angles, and the surface of the connecting end block (12) is fixedly provided with six groups of second limiting clips (13) at equal angles, and the second limiting clips (13) correspond to the first limiting slots (6).

4. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: The surface of the connecting screw sleeve (14) is evenly and fixedly mounted with a plurality of groups of anti-slip convex strips (16), and the surfaces of both ends of the anti-corrosion sucker rod (1) located between the protection tube (7) and the connecting screw sleeve (14) are respectively provided with sealing rings (9).

5. The anti-corrosion coated continuous pumping rod according to claim 1, characterized in that: Annular sliding grooves (11) are symmetrically arranged on both sides of the surface of the connecting column (10), and four groups of limiting sliding blocks (15) are fixedly installed at equal angles on one side of the inner wall of the connecting screw sleeve (14), and the limiting sliding blocks (15) correspond to the annular sliding grooves (11).

6. The anti-corrosion coated continuous pumping rod according to claim 5, characterized in that: A connecting internal thread (17) is provided on the side of the inner wall of the connecting screw sleeve (14) away from the limiting slider (15), and a connecting external thread (5) is provided on the surface of the connecting pipe (4), and the connecting internal thread (17) corresponds to the connecting external thread (5).

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