A super large omega type active packer

Abstract

The utility model discloses a kind of super-large omega active packer, it is related to packer technical field, including expansion seal body, gas injection pipe and fixed assembly, expansion seal body is set between conduit rack and steel pipe pile, by expansion part, connecting part and limit part form integral, its cross section is omega type, gas injection pipe is set to the outside of conduit rack, and with the expansion seal body inner cavity conduction, fixed assembly is set to the outside of expansion seal body, with the inner wall of conduit rack fixed connection.Ω Type seal body of the utility model is integrally formed by expansion part, connecting part and limit part, under internal pressure, expansion part can produce uniform and powerful radial sealing force, ensure the reliability of sealing, support ring plate welded on conduit rack is combined with detachable side plate and pad plate, forms a rigid constraint frame, the connecting part and limit part of seal body are tightly pressed, effectively prevent loosening and displacement under pressure impact.

Description

Technical Field

[0001] This utility model relates to the field of packer technology, and more particularly to an ultra-large Ω-shaped active packer device. Background Technology

[0002] In the construction of offshore wind power, offshore platforms and other projects, jacket foundations are widely used. After steel pipe piles are driven into the seabed, they are inserted into the pile legs of the jacket, forming an annular gap between them. This gap must be effectively sealed to prevent the intrusion of seawater, silt and other media, and to ensure the long-term safety and stability of the internal structure.

[0003] Currently, common sealing methods have some shortcomings. Passive sealing rings have limited sealing pressure in ultra-large diameter applications and are prone to aging and failure. While some active packers can actively seal, their sealing body structure is simple and their fixing method to the jacket is not stable enough. In complex marine environments, they are prone to displacement or sealing failure, affecting long-term reliability. Summary of the Invention

[0004] The purpose of this utility model is to provide an ultra-large Ω-shaped active sealing device in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-large Ω-shaped active sealing device, which expands and seals the gap between the guide frame and the steel pipe pile. The device includes an expansion and sealing body, an injection pipe, and a fixing component. The expansion and sealing body is disposed between the guide frame and the steel pipe pile and is formed by an expansion part, a connecting part, and a limiting part. Its cross-section is Ω-shaped. The injection pipe is disposed on the outside of the guide frame and communicates with the inner cavity of the expansion and sealing body. The fixing component is disposed on the outside of the expansion and sealing body and is fixedly connected to the inner wall of the guide frame to fix the expansion and sealing body to the inner wall of the guide frame.

[0006] Preferably, the fixing assembly includes a support ring plate, a side plate, and a pad. The support ring plate is welded to the inner wall of the guide frame. Annular side plates are inserted into the top and bottom of the support ring plate. The pad is installed in an annular shape on the inner wall of the guide frame. The pad and the side plate are fixedly connected by bolts.

[0007] Preferably, the expansion portion is located in the inner cavity of the support ring plate, the connecting portion and the limiting portion extend into the interior of the support ring plate, the end of the side plate is pressed into contact with the connecting portion, and the limiting portion is fitted to the outer side of the side plate.

[0008] Preferably, the support ring plate has an annular reinforcing rib embedded in its center.

[0009] Preferably, a sealing gasket is fitted on the outer side of the air injection tube, the sealing gasket is in contact with the outer wall of the guide tube frame, and a nut is threaded onto the air injection tube, the nut is pressed against the outer side of the sealing gasket to form a sealing structure.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this application, an Ω-shaped sealing body is provided, which is integrally composed of an expansion part, a connecting part and a limiting part. Under internal pressure, the expansion part can generate a uniform and strong radial sealing force, while the connecting part and the limiting part provide stable force transmission and deformation control, ensuring the reliability of the seal.

[0011] 2. In this application, the support ring plate welded to the guide frame, together with the detachable side plate and pad, forms a rigid constraint frame that firmly presses the connection and limiting parts of the sealing body, effectively preventing loosening and displacement under pressure impact. The annular reinforcing rib embedded in the middle of the support ring plate further enhances the overall rigidity and deformation resistance of the fixing component, ensuring the durability of the fixing effect under long-term use. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A cross-sectional view of the overall structure provided according to an embodiment of the present utility model is shown; Figure 3 The present invention provides an embodiment of the present invention. Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 A partially enlarged view of the expansion seal and side plate provided according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the catheter holder and expansion seal body structure provided according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of a steel pipe pile and an expansion seal body structure according to an embodiment of the present invention is shown.

[0013] Legend: 1. Jacket frame; 2. Steel pipe pile; 3. Expansion seal; 301. Expansion part; 302. Connection part; 303. Limiting part; 4. Injection pipe; 401. Sealing gasket; 402. Nut; 5. Fixing component; 6. Support ring plate; 7. Side plate; 8. Pad; 9. Bolt; 10. Reinforcing rib. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6 This utility model provides a technical solution: an ultra-large Ω-shaped active sealing device, which expands the sealing body 3 in the gap between the guide frame 1 and the steel pipe pile 2, including the expansion sealing body 3, the air injection pipe 4 and the fixing component 5; The expansion seal 3 is disposed between the jacket 1 and the steel pipe pile 2. It is formed by the expansion part 301, the connecting part 302 and the limiting part 303. Its cross-section is Ω-shaped. The expansion seal 3 is made of a high-strength, corrosion-resistant and aging-resistant elastic material (such as rubber). When it is necessary to inject a pressure medium into its inner cavity through the air injection pipe 4, the Ω-shaped structure can expand towards the inner wall of the jacket 1 and the outer wall of the steel pipe pile 2, increasing the sealing contact area. It uses the friction between the rubber and the steel pipe pile 2 to play a sealing role. Specifically, such as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the air injection pipe 4 is located on the outside of the guide frame 1 and communicates with the inner cavity of the expansion seal 3. To ensure the sealing between the air injection pipe 4 and the guide frame 1, a sealing gasket 401 is sleeved on the outside of the air injection pipe 4. The sealing gasket 401 fits against the outer wall of the guide frame 1. A nut 402 is threaded onto the air injection pipe 4. The nut 402 is pressed against the outside of the sealing gasket 401 to form a sealing structure and prevent the medium from leaking from the perforation between the air injection pipe 4 and the guide frame 1. Specifically, such as Figure 2 and Figure 3 As shown, the fixing component 5 is disposed on the outside of the expansion seal 3 and is fixedly connected to the inner wall of the guide frame 1. It is used to fix the expansion seal 3 to the inner wall of the guide frame 1. The fixing component 5 includes a support ring plate 6, a side plate 7 and a pad 8. The support ring plate 6 is welded to the inner wall of the guide frame 1. Annular side plates 7 are inserted at the top and bottom of the support ring plate 6. The pad 8 is installed in an annular shape on the inner wall of the guide frame 1. The pad 8 and the side plate 7 are fixedly connected by bolts 9. In order to further enhance its overall rigidity, an annular reinforcing rib 10 is embedded in the middle of the support ring plate 6.

[0016] Specifically, such as Figure 4As shown, the expansion part 301 is located in the inner cavity of the support ring plate 6, the connecting part 302 and the limiting part 303 extend into the interior of the support ring plate 6, and the end of the side plate 7 is pressed against the connecting part 302 to form a positive clamping force, preventing the expansion seal 3 from being dislodged towards the inner wall of the guide frame 1 due to internal pressure. The limiting part 303 fits against the outer side of the side plate 7 to form an anti-extrusion and axial limiting structure. When the internal pressure of the expansion seal 3 is extremely high, the limiting part 303 can limit the expansion seal 3 to prevent the connecting part 302 from being squeezed out of the gap, thereby ensuring the sealing integrity and long-term reliability of the overall structure.

[0017] In summary, the working principle of the ultra-large Ω-shaped active packer provided in this embodiment is as follows: When it is necessary to seal the annular gap between the guide frame 1 and the steel pipe pile 2, compressed air is injected into the inner cavity of the expansion sealing body 3 through the air injection pipe 4 via external equipment. The expansion part 301 expands outward under the action of internal pressure, tightly fitting the inner wall of the guide frame 1 and the outer wall of the steel pipe pile 2, thus achieving an effective seal. Due to the firm constraint of the fixing component 5 on the connecting part 302 and the limiting part 303, the expansion sealing body 3 will not be displaced or dislodged during operation, ensuring the long-term stability of the seal. When it is necessary to release the seal, the internal pressure is released through the air injection pipe 4, and the expansion sealing body 3 can retract and restore itself.

[0018] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A super-large Ω-shaped active sealing device, comprising an expansion sealing body (3) installed in the gap between the guide frame (1) and the steel pipe pile (2), characterized in that, include: An expansion sealing body (3) is disposed between the guide frame (1) and the steel pipe pile (2), and is formed by an expansion part (301), a connecting part (302) and a limiting part (303), and its cross-section is Ω-shaped; The air injection tube (4) is located on the outside of the catheter holder (1) and communicates with the inner cavity of the expansion seal (3); The fixing component (5) is disposed on the outside of the expansion seal (3) and fixedly connected to the inner wall of the catheter frame (1) for fixing the expansion seal (3) to the inner wall of the catheter frame (1).

2. The ultra-large Ω-shaped active sealing device according to claim 1, characterized in that, The fixing component (5) includes a support ring plate (6), a side plate (7) and a pad (8). The support ring plate (6) is welded to the inner wall of the guide frame (1). Annular side plates (7) are inserted into the top and bottom of the support ring plate (6). The pad (8) is installed in an annular shape on the inner wall of the guide frame (1). The pad (8) and the side plate (7) are fixedly connected by bolts (9).

3. The ultra-large Ω-shaped active sealing device according to claim 2, characterized in that, The expansion portion (301) is located in the inner cavity of the support ring plate (6), the connecting portion (302) and the limiting portion (303) extend into the interior of the support ring plate (6), the end of the side plate (7) is pressed into contact with the connecting portion (302), and the limiting portion (303) is attached to the outer side of the side plate (7).

4. The ultra-large Ω-shaped active sealing device according to claim 3, characterized in that, The support ring plate (6) is provided with an annular reinforcing rib (10) in the middle.

5. The ultra-large Ω-shaped active sealing device according to claim 1, characterized in that, A sealing gasket (401) is fitted on the outside of the air injection tube (4). The sealing gasket (401) fits against the outer wall of the guide frame (1). A nut (402) is threaded onto the air injection tube (4). The nut (402) is pressed against the outside of the sealing gasket (401) to form a sealing structure.

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