A device to prevent oil pipe from detaching

Abstract

This utility model relates to an anti-detachment device for oil tubing, specifically in the field of oil tubing technology. It includes: a base structure, which is circumferentially positioned around the outside of the oil tubing and has multiple anti-tension bolts; a ring sleeve, which is also circumferentially positioned around the outside of the oil tubing and located above the base structure; two sets of arc-shaped clamping sleeves symmetrically arranged on both sides of the oil tubing, pressing against the sides of the oil tubing; multiple pre-tightening levers, each with an identical structure, corresponding one-to-one with multiple anti-tension bolts; multiple openings on the ring sleeve corresponding to the pre-tightening levers; the pre-tightening levers passing through these openings and rotatably connected to the inside of the openings via a pivot; one end of the pre-tightening lever extending into the inside of the ring sleeve and abutting against the outer surface of the arc-shaped clamping sleeve, while the other end extends upwards out of the ring sleeve; and a pre-tightening rope.

Description

Technical Field

[0001] This utility model relates to the field of oil pipe technology, and in particular to an oil pipe anti-detachment device. Background Technology

[0002] Oil pipelines are pipes used during drilling to transport crude oil and natural gas from oil and gas reservoirs to the surface. They primarily withstand the pressure generated during extraction, ensuring the smooth delivery of oil and gas to the surface. As operating pressure increases, the safety of the pipeline and its connecting components becomes paramount. According to industry standards and safety practices, when the operating pressure of the pipeline exceeds 10 MPa (megapascals), anti-detachment chains are typically installed to enhance connection stability and prevent pipeline detachment or leakage accidents caused by excessive pressure. Excessive pressure can lead to loosening, leakage, or even breakage at pipeline connections, resulting in safety accidents.

[0003] In existing technologies, anti-detachment chains provide additional protection when the oil pipe pressure reaches a certain level. By adding extra fixing points, anti-detachment chains can effectively reduce the relative movement at the oil pipe connection under high pressure, thereby improving the stability of the entire system. However, although anti-detachment chains can withstand some of the mechanical stress generated by the relative movement at the oil pipe connection under high pressure, the connection method of anti-detachment chains only reduces the relative movement at the oil pipe connection under high pressure, and cannot apply sufficient prestress to further reduce the relative movement and minimize the risk. We believe this is a shortcoming in the use of anti-detachment chains and requires further technical improvement.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop an anti-detachment device for oil pipelines. Utility Model Content

[0005] The purpose of this invention is to provide an anti-detachment device for oil pipes in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses an anti-detachment device for oil tubing, comprising:

[0008] A base structure is arranged around the outside of the oil pipeline, and multiple tensile bolts are provided on the base structure;

[0009] A ring sleeve is disposed around the outside of the oil tubing and above the base structure;

[0010] The arc-shaped clamping sleeve is provided in two sets symmetrically arranged on both sides of the oil pipe, and the two sets of arc-shaped clamping sleeves are clamped on the side of the oil pipe.

[0011] A preload lever, comprising multiple identical preload levers, is provided in a one-to-one correspondence with multiple anti-tension bolts. The ring sleeve has multiple openings corresponding to the preload levers. Each preload lever passes through one of these openings and is rotatably connected to the inside of the opening via a pivot. One end of the preload lever extends into the inside of the ring sleeve and abuts against the outer surface of the arc-shaped clamping sleeve, while the other end extends upwards out of the ring sleeve.

[0012] A pre-tensioning rope, one end of which is connected to one end of the pre-tensioning lever extending out of the loop, and the other end of which is connected to the upper end of the anti-tensioning bolt, is used to pull the pre-tensioning lever downward through the pre-tensioning rope so that the other end of the pre-tensioning lever presses against the outer surface of the arc-shaped compression sleeve.

[0013] Furthermore, each set of the arc-shaped clamping sleeves is provided with at least two sets of the pre-tightening levers.

[0014] Furthermore, the base structure includes a lower annular plate and an upper annular plate. The upper annular plate is coaxially disposed above the lower annular plate. Multiple connecting rods are provided between the lower annular plate and the upper annular plate for connection and support. Multiple embedded rods are provided on the lower surface of the lower annular plate, and multiple anti-detachment protrusions are provided on the embedded rods.

[0015] Furthermore, the upper annular plate is provided with a plurality of reserved holes corresponding one-to-one with the plurality of tensile bolts, and the tensile bolts are disposed through the reserved holes;

[0016] The lower end of the anti-tension bolt has external threads to pull the anti-tension bolt downward by setting a nut and pressing the nut against the lower surface of the upper annular plate.

[0017] Furthermore, a first pull ring is provided at the upper end of the tension bolt for connecting the pretension rope, and a second pull ring is provided at the end of the pretension lever that extends out of the loop for connecting the pretension rope.

[0018] Furthermore, the outer surface of the arc-shaped clamping sleeve is inclined, and the thickness of the upper end of the arc-shaped clamping sleeve is less than the thickness of the lower end to form an inclined surface;

[0019] A limiting groove is formed on the outer surface of the arc-shaped clamping sleeve to accommodate the end of the pre-tightening lever. A pad is provided in the limiting groove so that the end of the pre-tightening lever abuts against the pad to press the arc-shaped clamping sleeve onto the oil pipe.

[0020] In the above technical solution, the oil pipe anti-detachment device provided by this utility model has the following beneficial effects:

[0021] This device uses anti-tension bolts on the base structure to tighten the pre-tensioning lever via a pre-tensioning rope. The pre-tensioning lever, through its leverage principle, presses against the outside of the arc-shaped clamping sleeve, which in turn presses against the oil pipe wall. This is equivalent to applying pre-stress to the oil pipe to prevent relative movement, achieving an effective anti-detachment effect. Especially for oil pipes subjected to axial upward pressure, when they are about to move upward, the pre-tensioning lever will further tighten against the arc-shaped clamping sleeve, ensuring the oil pipe's anti-detachment effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the structure of an oil pipe anti-detachment device provided in an embodiment of this utility model;

[0024] Figure 2 A top view of an arc-shaped clamping sleeve of an oil pipe anti-detachment device provided in an embodiment of this utility model;

[0025] Figure 3 This is a top sectional view of the ring sleeve of an oil pipe anti-detachment device provided in an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Tension bolt; 2. Ring sleeve; 3. Arc-shaped clamping sleeve; 4. Pre-tightening lever; 5. Opening; 6. Pre-tightening rope; 7. Lower annular plate; 8. Upper annular plate; 9. Connecting rod; 10. Embedded rod; 11. Anti-detachment protrusion; 12. Reserved hole; 13. Nut; 14. First pull ring; 15. Second pull ring; 16. Limiting groove; 17. Pad. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1-3 An oil pipeline anti-detachment device, comprising:

[0030] The base structure is arranged around the outside of the oil pipeline. The base structure is equipped with multiple anti-tension bolts 1. The base structure is fixedly set at the ground position to stably support the multiple anti-tension bolts 1.

[0031] Ring 2, ring 2 is arranged around the outside of the oil pipe and located above the base structure;

[0032] The arc-shaped clamping sleeve 3 consists of two sets symmetrically arranged on both sides of the oil pipe and located inside the ring sleeve 2. The two sets of arc-shaped clamping sleeves 3 are set to clamp the oil pipe on the side, which is equivalent to the two sets of arc-shaped clamping sleeves 3 clamping and fixing the oil pipe to restrict the axial movement of the oil pipe and prevent the oil pipe from detaching.

[0033] Pre-tightening levers 4, multiple pre-tightening levers 4 having the same structure, are arranged one-to-one with multiple anti-tension bolts 1. Multiple openings 5 ​​are provided on the ring sleeve 2, corresponding one-to-one with the pre-tightening levers 4. The pre-tightening levers 4 pass through the openings 5 ​​and are rotatably connected to the inside of the openings 5 ​​via a rotating shaft. One end of the pre-tightening lever 4 extends into the inside of the ring sleeve 2 and abuts against the outer surface of the arc-shaped clamping sleeve 3; the other end extends upwards out of the ring sleeve 2. This allows the end of the pre-tightening lever 4 located outside the ring sleeve 2 to swing upwards, thus pressing the arc-shaped clamping sleeve 3 against the oil pipe by pulling downwards on the end of the pre-tightening lever 4 located inside the ring sleeve 2.

[0034] A pre-tensioning rope 6 is provided, with one end connected to the pre-tensioning lever 4 and the other end connected to the upper end of the anti-tension bolt 1. The pre-tensioning rope 6 is used to pull the pre-tensioning lever 4 downwards, causing the other end of the pre-tensioning lever 4 to press against the outer surface of the arc-shaped clamping sleeve 3. Specifically, the anti-tension bolt 1 is adjusted downwards on the base structure to tighten the pre-tensioning rope 6, thereby pulling the pre-tensioning lever 4 downwards to pre-tighten and fix the arc-shaped clamping sleeve 3.

[0035] Furthermore, each set of arc-shaped clamping sleeves 3 is equipped with at least two sets of pre-tightening levers 4, such as... Figure 2 and Figure 3 As shown, in this embodiment, each arc-shaped clamping sleeve 3 is provided with three sets of pre-tightening levers 4 to better tighten the arc-shaped clamping sleeve 3.

[0036] Furthermore, the base structure includes a lower annular plate 7 and an upper annular plate 8. The upper annular plate 8 is coaxially arranged above the lower annular plate 7. Multiple connecting rods 9 are provided between the lower annular plate 7 and the upper annular plate 8 for connection and support. Multiple embedded rods 10 are provided on the lower surface of the lower annular plate 7, and multiple anti-detachment protrusions 11 are provided on the embedded rods 10.

[0037] Specifically, multiple connecting rods 9 are connected and supported between the lower annular plate 7 and the upper annular plate 8, so that an operating space is formed between the lower annular plate 7 and the upper annular plate 8 to facilitate the installation and adjustment of the anti-tension bolt 1.

[0038] Furthermore, the upper annular plate 8 is provided with a plurality of reserved holes 12 corresponding to the plurality of tensile bolts 1, and the tensile bolts 1 are installed through the reserved holes 12;

[0039] The lower end of the anti-tension bolt 1 has an external thread to pull the anti-tension bolt 1 downward by setting a nut 13 and pressing the nut 13 against the lower surface of the upper annular plate 8.

[0040] Specifically, by rotating the nut 13, it engages with the tension bolt 1 through a thread, and the nut 13 is pressed against the lower surface of the upper annular plate 8 to pull the tension bolt 1 downward, thereby pulling the prestressed rope 6 through the tension bolt 1 to adjust the prestress.

[0041] Furthermore, a first pull ring 14 is provided at the upper end of the tension bolt 1 to connect the pretension rope 6, and a second pull ring 15 is provided at the end of the pretension lever 4 that extends out of the loop 2 to connect the pretension rope 6. That is, the two ends of the pretension rope 6 are respectively connected to the first pull ring 14 and the second pull ring 15, thereby connecting the pretension rope 6 to the tension bolt 1 and the pretension lever 4.

[0042] Furthermore, the outer surface of the arc-shaped clamping sleeve 3 is inclined, and the thickness of the upper end of the arc-shaped clamping sleeve 3 is less than the thickness of the lower end to form an inclined surface. This inclined surface can easily form a support relationship with the end of the pre-tightening lever 4, so that the pre-tightening lever 4 can more easily apply force to the side of the arc-shaped clamping sleeve 3 without slipping.

[0043] A limiting groove 16 is provided on the outer surface of the arc-shaped clamping sleeve 3 to accommodate the end of the pre-tightening lever 4. A pad 17 is provided in the limiting groove 16 so that the end of the pre-tightening lever 4 abuts against the pad 17 to press the arc-shaped clamping sleeve 3 onto the oil pipe, so that the end of the pre-tightening lever 4 extends into the limiting groove 16 of the arc-shaped clamping sleeve 3, further preventing the end of the pre-tightening lever 4 from detaching from the arc-shaped clamping sleeve 3. At the same time, through the pad 17, the force applied by the end of the pre-tightening lever 4 is first transmitted to the arc-shaped clamping sleeve 3 through the pad 17, so as to form a top-level fixation of a larger area of ​​the arc-shaped clamping sleeve 3, so as to perform a more stable clamping operation on the arc-shaped clamping sleeve 3. Furthermore, after the arc-shaped clamping sleeve 3 is subjected to the force generated by the upward movement of the oil pipe, the limiting groove 16 limits the end of the pre-tightening lever 4, making it easier for the pre-tightening lever 4 to swing upward at the inner end of the ring sleeve 2. Because the ring sleeve 2 is fixed and supports the pre-tightening lever 4, the pre-tightening lever 4 can swing with the upward movement of the arc-shaped clamping sleeve 3, thereby generating a greater pushing force on the arc-shaped clamping sleeve 3, so as to strengthen the clamping of the arc-shaped clamping sleeve 3 on the oil pipe and prevent the oil pipe from moving upward axially, so as to better achieve the anti-detachment function of the oil pipe.

[0044] In summary, this device uses tension bolts on the base structure to tighten the pre-tightening lever via pre-tightening ropes. The pre-tightening lever, through its leverage principle, presses against the outside of the arc-shaped clamping sleeve, which in turn presses against the oil pipe wall. This is equivalent to applying pre-stress to the oil pipe to prevent relative movement, achieving an effective anti-detachment effect. Especially for oil pipes subjected to axial upward pressure, the pre-tightening lever will further tighten the arc-shaped clamping sleeve when it is about to move upward, ensuring the anti-detachment effect of the oil pipe.

[0045] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A petroleum tubing disengagement prevention device characterized by comprising: include: A base structure is arranged around the outside of the oil pipe, and a plurality of tensile bolts (1) are provided on the base structure. Ring sleeve (2), the ring sleeve (2) is arranged around the outside of the oil pipe and located above the base structure; Arc-shaped clamping sleeve (3), the arc-shaped clamping sleeve (3) is two sets symmetrically arranged on both sides of the oil pipe, and the two sets of arc-shaped clamping sleeves (3) are clamped on the side of the oil pipe; A pre-tightening lever (4), wherein there are multiple pre-tightening levers (4) with the same structure, and each pre-tightening lever (4) is correspondingly arranged with a multiple anti-tension bolt (1). The ring sleeve (2) has multiple openings (5) corresponding to each pre-tightening lever (4). The pre-tightening lever (4) passes through the openings (5) and is rotatably connected to the inside of the openings (5) via a rotating shaft. One end of the pre-tightening lever (4) extends into the inside of the ring sleeve (2) and abuts against the outer surface of the arc-shaped clamping sleeve (3), while the other end extends upwards from the ring sleeve (2). A pre-tightening rope (6) is provided, with one end of the pre-tightening lever (4) extending out of the loop (2) and the other end of the pre-tightening lever (4) extending out of the loop (2). The pre-tightening rope (6) is used to pull the pre-tightening lever (4) downward through the pre-tightening rope (6) so that the other end of the pre-tightening lever (4) presses against the outer surface of the arc-shaped compression sleeve (3).

2. A petroleum tubing disengagement prevention device according to claim 1, characterized in that, Each set of the arc-shaped compression sleeves (3) is provided with at least two sets of the pre-tightening levers (4).

3. A petroleum tubing disengagement prevention device according to claim 1, characterized in that, The base structure includes a lower annular plate (7) and an upper annular plate (8). The upper annular plate (8) is coaxially arranged above the lower annular plate (7). Multiple connecting rods (9) are provided between the lower annular plate (7) and the upper annular plate (8) for connection and support. Multiple embedded rods (10) are provided on the lower surface of the lower annular plate (7). Multiple anti-detachment protrusions (11) are provided on the embedded rods (10).

4. A petroleum tubing disengagement prevention device according to claim 3, characterized in that The upper annular plate (8) is provided with a plurality of reserved holes (12) corresponding one-to-one with the plurality of tensile bolts (1), and the tensile bolts (1) are provided through the reserved holes (12); The lower end of the anti-tensile bolt (1) has an external thread to pull the anti-tensile bolt (1) downward by setting a nut (13) and pressing the nut (13) against the lower surface of the upper annular plate (8).

5. The petroleum tubing disengagement prevention device according to claim 1, wherein The upper end of the anti-tension bolt (1) is provided with a first pull ring (14) for connecting the pre-tension rope (6), and the end of the pre-tension lever (4) extending out of the loop (2) is provided with a second pull ring (15) for connecting the pre-tension rope (6).

6. A petroleum tubing disengagement prevention device according to claim 1, wherein The outer surface of the arc-shaped clamping sleeve (3) is inclined, and the thickness of the upper end of the arc-shaped clamping sleeve (3) is less than the thickness of the lower end to form an inclined surface; A limiting groove (16) is provided on the outer surface of the arc-shaped clamping sleeve (3) to accommodate the end of the pre-tightening lever (4) extending into it. A pad (17) is provided in the limiting groove (16) to allow the end of the pre-tightening lever (4) to abut against the pad (17) to press the arc-shaped clamping sleeve (3) onto the oil pipe.

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