A partial casing damage protection device

CN224718428UActive Publication Date: 2026-09-04GENERAL PROSPECTING INSTITUTE OF CHINA NATIONAL ADMINISTRATION OF COAL GEOLOGY +1
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Patent Information

Application Number
CN202521726625.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-14
Publication Date
2026-09-04
Estimated Expiration
2035-08-14

AI Technical Summary

Technical Problem

[0002]套管实现对内部设备的遮挡保护,当套管发生碰撞时会产生损伤,损伤的长期存在再碰撞会造成套管的损坏,从而需要对套管损伤部分进行遮挡保护,现有通过防护管实现保护,但是现有的防护管无法实现损伤处的二次密封保护

Benefits of technology

[0012] 1. In use, the protective cylinder rotates to move the arc plate to the damaged area, and the arc plate squeezes to move the protective cylinder outward. After the protective cylinder moves outward, the protrusion and the limiting groove exert a squeezing force to quickly limit and fix the protective cylinder.

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Abstract

The utility model provides a kind of sleeve local damage protection device, including pipeline, fixed pipe is movably installed on the pipeline, the side welding of fixed pipe has fixed block, fixed hole is opened on the fixed block, the one end welding of fixed pipe has ring seat, protection cylinder is movably installed on the ring seat, support assembly is rotatably installed on the protection cylinder, the support assembly includes threaded column, threaded hole is opened on the protection cylinder, the threaded column is rotatably installed in the inside of threaded hole, the one end movably installed of threaded column has bearing tube, the one end of bearing tube is fixed with arc plate.The utility model, when using, make arc plate move to damage place by the rotation of protection cylinder, make protection cylinder move outward by the extrusion of arc plate, after protection cylinder moves outward, extrusion force is realized by protruding block and limit groove, and protection cylinder is quickly limited and fixed.
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Description

Technical Field

[0001] This utility model relates to the field of casing protection equipment, specifically a casing local damage protection device. Background Technology

[0002] The sleeve provides protection for the internal equipment. When the sleeve is hit by a collision, it will be damaged. If the damage persists and is hit again, it will cause further damage to the sleeve. Therefore, it is necessary to protect the damaged part of the sleeve. Currently, protective tubes are used to achieve this protection, but existing protective tubes cannot provide secondary sealing protection for the damaged area.

[0003] According to the patent document with publication number CN221939045U, a capsule-type protective sleeve for oil and gas bushings includes a transformer oil and gas bushing. A gas-side mounting flange and a transformer-side mounting flange are provided on the transformer oil and gas bushing. The gas-side mounting flange is connected to a gas-side protective sleeve, and the transformer-side mounting flange is connected to a transformer-side protective sleeve. Both the gas-side and transformer-side protective sleeves are flexible protective sleeves. This technical solution can be configured according to actual conditions during use, thus meeting the needs of different bushings and can be widely applied to the protection of various bushings. However, while this solution achieves protection for various bushings, it cannot achieve rapid positioning and installation of the protective sleeve during use, which is inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a protective device for localized damage to a sleeve, thereby solving the problems mentioned in the background art. This utility model has a novel structure. In use, the rotation of the protective cylinder moves the arc-shaped plate to the damaged area, and the compression of the arc-shaped plate causes the protective cylinder to move outward. After the protective cylinder moves outward, the protrusion and the limiting groove exert a compressive force, thereby quickly limiting and fixing the protective cylinder.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sleeve local damage protection device, including a pipe, a fixed pipe movably installed on the pipe, a fixed block welded to the side of the fixed pipe, a fixed hole opened on the fixed block, a ring seat welded to one end of the fixed pipe, a protective cylinder movably installed on the ring seat, and a support component rotatably installed on the protective cylinder.

[0006] Furthermore, the support assembly includes a threaded post, and the protective cylinder has a threaded hole, with the threaded post rotatably mounted inside the threaded hole.

[0007] Furthermore, a bearing tube is movably mounted on one end of the threaded column, and an arc-shaped plate is fixed to one end of the bearing tube.

[0008] Furthermore, a sealing gasket is fixed on the inner wall of the arc-shaped plate, and the sealing gasket moves to contact the outer wall of the pipe. A handle is fixed at one end of the threaded column.

[0009] Furthermore, the ring seat has a slot, and a limiting groove is fixed inside the slot, with a protrusion movably installed inside the limiting groove.

[0010] Furthermore, an arc-shaped block is fixed to one side of the protrusion, and the arc-shaped block is fixedly installed on the inner wall of the protective cylinder.

[0011] The beneficial effects of this utility model are:

[0012] 1. In use, the protective cylinder rotates to move the arc plate to the damaged area, and the arc plate squeezes to move the protective cylinder outward. After the protective cylinder moves outward, the protrusion and the limiting groove exert a squeezing force to quickly limit and fix the protective cylinder.

[0013] 2. In this utility model, the fixing tube can achieve secondary positioning and fixing of the ring seat through the fixing hole on the fixing block. Under the extrusion of the arc plate, the sealing gasket deforms to cover and seal the damaged area. After the damaged area breaks in the later stage, it can be protected by the sealing gasket to avoid a large amount of leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sleeve local damage protection device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the ring seat of a sleeve local damage protection device according to the present invention;

[0016] Figure 3 This is a side view sectional view of the ring seat structure of a sleeve local damage protection device according to the present invention;

[0017] Figure 4 This is a schematic diagram of the arc-shaped plate of the sleeve local damage protection device of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the arc-shaped plate after installation of the sleeve local damage protection device of this utility model;

[0019] In the diagram: 1. Pipe; 2. Fixed pipe; 3. Fixed block; 4. Fixed hole; 5. Ring seat; 6. Protective cylinder; 7. Support assembly; 8. Groove; 9. Limiting groove; 10. Protrusion; 11. Arc plate; 12. Bearing tube; 13. Threaded column; 14. Handle; 15. Sealing gasket. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 5 This utility model provides a technical solution: a sleeve local damage protection device, including a pipe 1, a fixed pipe 2 movably installed on the pipe 1, a fixed block 3 welded to the side of the fixed pipe 2, a fixed hole 4 opened on the fixed block 3, a ring seat 5 welded to one end of the fixed pipe 2, a protective cylinder 6 movably installed on the ring seat 5, a support component 7 rotatably installed on the protective cylinder 6, the support component 7 including a threaded post 13, a threaded hole opened on the protective cylinder 6, the threaded post 13 rotatably installed inside the threaded hole, the threaded post 13 rotates inside the threaded hole to push the arc plate 11 to move by compression, and after the arc plate 11 is compressed, it pushes the protective cylinder 6 to move outward to achieve limiting and fixing.

[0022] In this embodiment, a bearing tube 12 is movably installed at one end of the threaded column 13, and an arc-shaped plate 11 is fixed at one end of the bearing tube 12. A sealing gasket 15 is fixed on the inner wall of the arc-shaped plate 11, and the sealing gasket 15 is movably in contact with the outer wall of the pipe 1. A handle 14 is fixed at one end of the threaded column 13. A slot 8 is opened on the ring seat 5, and a limiting groove 9 is fixed inside the slot 8. A protrusion 10 is movably installed inside the limiting groove 9, and an arc-shaped block is fixed on one side of the protrusion 10. The arc-shaped block is fixedly installed on the inner wall of the protective cylinder 6. After rotation, the arc-shaped block and the protrusion 10 move to the interface of the slot 8, and the arc-shaped block and the protrusion 10 cooperate to achieve limiting and fixing between the ring seats 5.

[0023] Working principle: In use, the fixed pipe 2 is first movably installed on the pipe 1. The pipe 1 is a sleeve. After the fixed pipe 2 is installed on the sleeve, the ring seat 5 drives the protective cylinder 6 to be installed on the pipe 1. After the protective cylinder 6 is installed, the protective cylinder 6 is rotated. When the protective cylinder 6 rotates, the arc plate 11 moves to approximately the damaged area. The screw handle 14 drives the threaded column 13 to rotate. The rotation of the threaded column 13 pushes the arc plate 11 downward to contact the outer wall of the pipe 1. As the arc plate 11 compresses, the sealing gasket 15 contacts and covers the damaged area. As the compressive force increases... The sealing gasket 15 is deformed by compression to seal between the arc plate 11 and the pipe 1. When the arc plate 11 is compressed, the protective cylinder 6 moves outward. After the protective cylinder 6 moves outward, the protrusion 10 and the arc block compress the slot 8. The protective cylinder 6 achieves the limiting and fixing of the ring seat 5. Later, the bolt is installed inside the fixing hole 4. The fixing bolt achieves secondary fixing of the fixing pipe 2. When the arc plate 11 is compressed, the sealing gasket 15 deforms to shield and seal the damaged area. Later, if the damaged area breaks, it can be shielded and protected by the sealing gasket 15 to avoid a large amount of leakage.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A casing local damage protection device, comprising a pipe (1), characterized in that: A fixed pipe (2) is movably installed on the pipe (1). A fixed block (3) is welded to the side of the fixed pipe (2). A fixed hole (4) is opened on the fixed block (3). A ring seat (5) is welded to one end of the fixed pipe (2). A protective cylinder (6) is movably installed on the ring seat (5). A support component (7) is rotatably installed on the protective cylinder (6).

2. The sleeve local damage protection device according to claim 1, characterized in that: The support assembly (7) includes a threaded post (13), and the protective cylinder (6) has a threaded hole. The threaded post (13) is rotatably installed inside the threaded hole.

3. The sleeve local damage protection device according to claim 2, characterized in that: One end of the threaded column (13) is movably mounted with a bearing tube (12), and one end of the bearing tube (12) is fixed with an arc plate (11).

4. The sleeve local damage protection device according to claim 3, characterized in that: A sealing gasket (15) is fixed on the inner wall of the arc plate (11), and the sealing gasket (15) moves to contact the outer wall of the pipe (1). A handle (14) is fixed at one end of the threaded column (13).

5. The sleeve local damage protection device according to claim 1, characterized in that: The ring seat (5) has a slot (8), and a limiting groove (9) is fixed inside the slot (8). A protrusion (10) is movably installed inside the limiting groove (9).

6. The sleeve local damage protection device according to claim 5, characterized in that: An arc-shaped block is fixed to one side of the protrusion (10), and the arc-shaped block is fixedly installed on the inner wall of the protective cylinder (6).

Citation Information

Patent Citations

  • Capsule type oil and gas casing protecting sleeve

    CN221939045U