Sealing device

CN224741563UActive Publication Date: 2026-09-11CHINA THREE GORGES CORP FUJIAN ENERGY INVESTMENT CO LTD +2
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522153904.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-11
Publication Date
2026-09-11
Estimated Expiration
2035-10-11

AI Technical Summary

Technical Problem

[0006]本申请实施例提供一种密封装置,用以解决海生物或泥沙涌入桩内影响钢管桩的灌浆质量的问题

Benefits of technology

[0034] This application provides a sealing device for steel pipe piles, comprising a sealing cover and a counterweight; the sealing cover and the counterweight are fixedly connected; the sealing device is used to seal the opening of the steel pipe pile; when the sealing device is placed over the opening of the steel pipe pile, the sealing cover is sealed to the opening of the steel pipe pile, and the counterweight is located inside the steel pipe pile. After the steel pipe pile is driven into the ground, the sealing device is installed. The sealing cover effectively prevents marine organisms and sediment from entering the pile, avoiding affecting the grouting quality of the steel pipe pile; the counterweight acts as a counterweight and guide, preventing the sealing cover from being too light and being washed away by water flow, improving the alignment efficiency between the sealing cover and the steel pipe pile and the stability after installation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224741563U_ABST
    Figure CN224741563U_ABST
Patent Text Reader

Abstract

This application provides a sealing device, relating to the field of offshore wind power technology. The sealing device, used for steel pipe piles, includes a sealing cap and a counterweight; the sealing cap and counterweight are fixedly connected; the sealing device is used to seal the opening of the steel pipe pile; when the sealing device is placed over the opening of the steel pipe pile, the sealing cap is sealed to the opening of the steel pipe pile, and the counterweight is located inside the steel pipe pile. The device of this application solves the problem of marine organisms or sediment entering the pile and affecting the grouting quality of the steel pipe pile.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] sealing device Technical Field

[0002] This application relates to the field of offshore wind power technology, and in particular to a sealing device. Background Technology

[0003] In the field of offshore wind power, steel pipe piles are mainly used to support and fix wind turbines, ensuring their stable and safe operation in harsh marine environments.

[0004] Currently, during the pile driving process, the top of most steel pipe piles is kept open for ease of installation and positioning. After the steel pipe piles are driven, the top of the piles will remain open and exposed to seawater, making it easy for attached marine organisms or silt to flow into the pile from the top.

[0005] However, existing technologies can affect the grouting quality of steel pipe piles. Utility Model Content

[0006] This application provides a sealing device to solve the problem of marine organisms or silt entering the pile and affecting the grouting quality of the steel pipe pile.

[0007] This application provides a sealing device for steel pipe piles, including a sealing cap and a counterweight;

[0008] The sealing cap and counterweight are fixedly connected;

[0009] The sealing device is used to seal the opening of the steel pipe pile;

[0010] When the sealing device is installed over the opening of the steel pipe pile, the sealing cover is sealed to the opening of the steel pipe pile, and the counterweight is located inside the steel pipe pile.

[0011] The sealing device described above can optionally have a plate-shaped sealing cover.

[0012] The orthographic projection of the sealing cap in the direction from the sealing cap to the steel pipe pile shall at least cover the opening of the steel pipe pile.

[0013] The sealing device described above may optionally include a reinforcing element;

[0014] The reinforcing part is embedded in the counterweight and is fixedly connected to the sealing cover.

[0015] The sealing device described above may optionally include a reinforcing section comprising multiple reinforcing plates and / or multiple reinforcing ribs.

[0016] The sealing device described above may optionally include a lifting mechanism;

[0017] One end of the lifting unit passes through the sealing cover and is fixedly connected to the counterweight;

[0018] The other end of the lifting part is located on the side of the sealing cover away from the counterweight.

[0019] The sealing device described above may optionally include a floating component;

[0020] One end of the float is fixedly connected to the counterweight through the sealing cap;

[0021] The other end of the float is located on the side of the sealing cap opposite the counterweight.

[0022] When the sealing device is installed over the opening of the steel pipe pile, at least a portion of the structure of the floating component is above the water surface.

[0023] The sealing device described above may optionally include a fixed part, a buoy, and a shackle.

[0024] One end of the fixing part passes through the sealing cover and is fixedly connected to the counterweight;

[0025] The other end of the fixing part is located on the side of the sealing cover away from the counterweight, and is fixedly connected to the buoy by a shackle.

[0026] The sealing device described above may optionally include a pull ring and a steel wire rope as the fixing part;

[0027] The pull ring is embedded in the counterweight;

[0028] One end of the steel wire rope passes through the sealing cap and is fixedly connected to the pull ring;

[0029] The other end of the wire rope is located on the side of the sealing cover away from the counterweight, and is fixedly connected to the buoy by a shackle.

[0030] The sealing device described above can optionally have a steel plate as the sealing cover.

[0031] The sealing device described above can optionally have a counterweight made of conical concrete.

[0032] A conical concrete structure consists of a large end and a small end;

[0033] The large end is fixedly connected to the sealing cap.

[0034] This application provides a sealing device for steel pipe piles, comprising a sealing cover and a counterweight; the sealing cover and the counterweight are fixedly connected; the sealing device is used to seal the opening of the steel pipe pile; when the sealing device is placed over the opening of the steel pipe pile, the sealing cover is sealed to the opening of the steel pipe pile, and the counterweight is located inside the steel pipe pile. After the steel pipe pile is driven into the ground, the sealing device is installed. The sealing cover effectively prevents marine organisms and sediment from entering the pile, avoiding affecting the grouting quality of the steel pipe pile; the counterweight acts as a counterweight and guide, preventing the sealing cover from being too light and being washed away by water flow, improving the alignment efficiency between the sealing cover and the steel pipe pile and the stability after installation. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 Schematic diagram of the sealing device provided in the embodiments of this application Figure 1 ;

[0037] Figure 2 Schematic diagram of the sealing device provided in the embodiments of this application Figure 2 ;

[0038] Figure 3 This is a partial structural schematic diagram of the sealing device provided in an embodiment of this application.

[0039] Figure label:

[0040] 110 - Sealing cap;

[0041] 120 - Counterweight;

[0042] 130 - Reinforced Department;

[0043] 131 - Reinforcing plate;

[0044] 132 - Reinforcing rib;

[0045] 140 - Floating component;

[0046] 141-Fixing part;

[0047] 142-Buoy;

[0048] 143-Shackle. Detailed Implementation

[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application. Rather, they are merely examples of apparatuses and devices consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0050] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with essentially the same function and purpose. For example, "first chip" and "second chip" are used only to distinguish different chips and do not limit their order of execution. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply that they are different.

[0051] It should be noted that in the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. In the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more.

[0052] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the sealing device provided in the embodiments of this application is merely an example, and the sealing device may include more or fewer components.

[0053] Currently, during the pile driving process, the top of most steel pipe piles is kept open for ease of installation and positioning. After the steel pipe piles are driven, the top of the piles will remain open and exposed to seawater, making it easy for attached marine organisms or silt to flow into the pile from the top.

[0054] In summary, in the existing technology, after the steel pipe pile is driven, marine organisms or silt may flow into the pile, affecting the grouting quality of the steel pipe pile.

[0055] Based on this, the present application provides a sealing device for steel pipe piles. The sealing device is installed immediately after the steel pipe pile is driven into the pile. The sealing cap effectively prevents marine organisms and sediment from entering the pile, thus avoiding affecting the grouting quality of the steel pipe pile. The counterweight acts as a counterweight and guide, preventing the sealing cap from being too light and being washed away by water flow, thereby improving the alignment efficiency between the sealing cap and the steel pipe pile and the stability after installation.

[0056] It can be used in the field of offshore wind power technology to solve the above-mentioned technical problems of existing technologies.

[0057] Figure 1 Schematic diagram of the sealing device provided in the embodiments of this application Figure 1 .like Figure 1As shown, the lower cylindrical structure is a steel pipe pile. This application provides a sealing device for steel pipe piles, including a sealing cap 110 and a counterweight 120;

[0058] The sealing cover 110 and the counterweight 120 are fixedly connected;

[0059] The sealing device is used to seal the opening of the steel pipe pile;

[0060] When the sealing device is installed over the opening of the steel pipe pile, the sealing cover 110 is sealed to the opening of the steel pipe pile, and the counterweight 120 is located inside the steel pipe pile.

[0061] For example, the sealing cover 110 can be a plate-like structure, and its shape can be circular, polygonal, or columnar. Alternatively, other structures can be added to the plate-like structure according to the actual situation.

[0062] For example, the sealing cap 110 can be made of materials such as metals or composite materials that have high strength, corrosion resistance and wear resistance.

[0063] For example, when the sealing cap 110 is made of metal, it can be used in conjunction with rubber to provide additional sealing while also cushioning impacts to some extent.

[0064] For example, the counterweight 120 may be cylindrical, blocky, or other irregular shapes, and the material of the counterweight 120 may be concrete, cast iron, or other materials that have a counterweight effect.

[0065] Specifically, the cross-sectional dimensions of the counterweight 120 are smaller than those of the steel pipe pile, allowing the counterweight 120 to be located inside the steel pipe pile.

[0066] The sealing cover 110 of the sealing device can effectively prevent marine organisms and silt from flowing into the pile, thus avoiding affecting the grouting quality of the steel pipe pile.

[0067] The counterweight 120 serves as a counterweight and guide, preventing the sealing cover 110 from being too light and being washed away by the water flow, thus improving the alignment efficiency between the sealing cover 110 and the steel pipe pile, and also enhancing the stability of the sealing device after installation.

[0068] In some embodiments, the sealing cover 110 has a plate-like structure; wherein the orthographic projection of the sealing cover 110 in the direction from the sealing cover 110 to the steel pipe pile at least covers the opening of the steel pipe pile.

[0069] Specifically, the cross-sectional dimensions of the sealing cover 110 are larger than those of the steel pipe pile, so that the sealing cover 110 is located on the steel pipe pile. The sealing cover 110 has a simple structure and is easy to process and manufacture.

[0070] In some embodiments, the sealing device further includes a reinforcing portion 130; the reinforcing portion 130 is embedded in the counterweight 120 and is fixedly connected to the sealing cap 110.

[0071] For example, the reinforcing part 130 can be fixedly connected to the sealing cover 110 by welding or other means.

[0072] For example, the reinforcing part 130 may also be provided on the outside of the counterweight 120 and fixedly connected to the sealing cover 110.

[0073] Specifically, the reinforcing part 130 connects the counterweight 120 and the sealing cover 110 to enhance the stability of the sealing device.

[0074] In some embodiments, the reinforcing part 130 includes a plurality of reinforcing plates 131 and / or a plurality of reinforcing ribs 132.

[0075] For example, the reinforcing rib 132 may be straight, L-shaped or other shapes. Preferably, an L-shaped reinforcing rib 132 may be embedded in the counterweight 120 to enhance the stability of the connection between the counterweight 120 and the sealing cover 110.

[0076] For example, the reinforcing ribs 132 may be distributed in a ring inside the counterweight 120.

[0077] For example, some reinforcing steel plates may also be provided on the outside of the counterweight 120, with a shape that fits the shape of the counterweight 120, and fixedly connected to the sealing cover 110, further enhancing the stability of the connection between the counterweight 120 and the sealing cover 110.

[0078] For example, when a portion of the reinforcing steel plate is disposed on the outside of the counterweight 120, a reinforcing rib 132 can be disposed inside the counterweight 120 to connect the reinforcing steel plate disposed on the outside of the counterweight 120 with the sealing cover 110, so that the sealing cover 110 is tightly connected with the counterweight 120.

[0079] For example, both the reinforcing plate 131 and the reinforcing rib 132 can be made of steel, which has high strength, corrosion resistance and wear resistance.

[0080] In some embodiments, the sealing device further includes a lifting section;

[0081] One end of the lifting part passes through the sealing cover 110 and is fixedly connected to the counterweight 120;

[0082] The other end of the lifting part is located on the side of the sealing cover 110 that is away from the counterweight 120.

[0083] For example, one end of the lifting part can be embedded in the counterweight 120 for fixed connection, or it can be directly fixed to the counterweight 120 on the outside of the counterweight 120. The other end of the lifting part is outside the sealing device, which is convenient for lifting the sealing device during grouting.

[0084] For example, the lifting part can also be composed of a pre-embedded part and a lifting component. The pre-embedded part is embedded in the counterweight 120. One end of the lifting component passes through the sealing cover 110 and is fixedly connected to the pre-embedded part, while the other end is located on the side of the sealing cover 110 away from the counterweight 120.

[0085] For example, the lifting part can be made of steel, which has high strength, corrosion resistance and wear resistance.

[0086] Specifically, the sealing cover 110 has a through hole, the shape of which can be square or round, etc., without restriction, so that the lifting part can pass through.

[0087] One end of the lifting part passes through the sealing cover 110 and is fixedly connected to the counterweight 120. The other end of the lifting part is located on the side of the sealing cover 110 away from the counterweight 120, so that the sealing device can be lifted directly through the lifting part during grouting.

[0088] Figure 2 Schematic diagram of the sealing device provided in the embodiments of this application Figure 2 , Figure 2 exist Figure 1 Based on this, the specific structure of the floating component 140 of the sealing device is shown.

[0089] In some embodiments, such as Figure 2 As shown, the upper part is a horizontal plane, and the sealing device also includes a floating element 140;

[0090] One end of the float 140 passes through the sealing cover 110 and is fixedly connected to the counterweight 120;

[0091] The other end of the float 140 is located on the side of the sealing cover 110 that is away from the counterweight 120;

[0092] When the sealing device is installed over the opening of the steel pipe pile, at least a portion of the structure of the float 140 is above the water surface.

[0093] For example, the float 140 can be fixedly connected to the counterweight 120 by a connecting rope passing through the sealing cover 110. Furthermore, one end of the connecting rope can be embedded in the counterweight 120 to achieve a fixed connection, or it can be directly fixedly connected to the counterweight 120 on the outside of the counterweight 120.

[0094] Specifically, the sealing device is installed immediately after the steel pipe pile is driven. When the sealing device is placed over the opening of the steel pipe pile, the other end of the floating part 140 is outside the sealing device, and a part of the structure of the floating part 140 is above the water surface, so that when the sealing cover 110 is removed later, the steel pipe pile can be quickly located along the floating part 140.

[0095] In some embodiments, the float 140 includes a fixing part 141, a buoy 142, and a shackle 143;

[0096] One end of the fixing part 141 passes through the sealing cover 110 and is fixedly connected to the counterweight 120;

[0097] The other end of the fixing part 141 is located on the side of the sealing cover 110 away from the counterweight 120, and is fixedly connected to the buoy 142 by the shackle 143.

[0098] For example, one end of the fixing part 141 can be embedded in the counterweight 120 to achieve a fixed connection, or it can be directly fixedly connected to the counterweight 120 on the outside of the counterweight 120. The other end of the fixing part 141 is outside the sealing device, which facilitates a fixed connection with the buoy 142 by the shackle 143.

[0099] For example, the material of the fixing part 141 may be steel or other high-strength and corrosion-resistant materials.

[0100] For example, the buoy 142 may be spherical, cubical, drum-shaped, etc., and the material of the buoy 142 may be plastic, fiberglass, or other materials with corrosion resistance and durability.

[0101] Specifically, the fixing part 141 is used to connect the counterweight 120 and the buoy 142; the shackle 143 is used to realize the detachable connection between the fixing part 141 and the buoy 142.

[0102] By setting up the buoy 142 and the fixing part 141, it is easy to quickly find the fixing part 141 when the sealing cover 110 is removed, and the sealing device can be lifted directly through the fixing part 141.

[0103] By setting a shackle 143 to connect the buoy 142 and the fixing part 141, a detachable connection is achieved, which is simple in structure and convenient in operation.

[0104] Figure 3 This is a partial structural schematic diagram of the sealing device provided in an embodiment of this application. Figure 3 exist Figure 1 Based on this, the specific structure of the fixing part 141 is further shown.

[0105] In some embodiments, such as Figure 3 As shown, the fixing part 141 includes a pull ring and a steel wire rope;

[0106] The pull ring is embedded in the counterweight 120;

[0107] One end of the steel wire rope passes through the sealing cover 110 and is fixedly connected to the pull ring;

[0108] The other end of the wire rope is located on the side of the sealing cover 110 away from the counterweight 120, and is fixedly connected to the buoy 142 by a shackle 143.

[0109] For example, one end of the pull ring is a ring structure, and the other end can be a straight, L-shaped or other shape structure, with the ring end of the pull ring fixedly connected to the wire rope.

[0110] For example, the counterweight 120 fits against one end of the sealing cover 110, and a pull ring space can be reserved. The pull ring space can be a cylinder, a cube, or other shapes, without limitation, so that one end of the pull ring is on the outside of the counterweight 120 and on the side of the sealing cover 110 facing the counterweight 120.

[0111] Specifically, the pull ring is embedded in the counterweight 120, achieving a fixed connection with the counterweight 120. One end of the wire rope passes through the sealing cover 110 and is fixedly connected to the pull ring, while the other end of the wire rope is fixedly connected to the buoy 142 via the shackle 143. The pull ring can be pre-embedded, and different lengths of wire rope can be connected according to actual conditions, making it highly adaptable.

[0112] In some embodiments, the sealing cap 110 is a steel plate.

[0113] In some embodiments, the counterweight 120 is a conical concrete structure;

[0114] A conical concrete structure consists of a large end and a small end;

[0115] The large end is fixedly connected to the sealing cap 110.

[0116] Specifically, the lower part of the sealing cover 110 is counterweighted with inverted conical concrete, which also serves as a guide during the installation of the sealing cover 110, making it easier for the sealing cover 110 to be aligned and installed underwater with the steel pipe pile.

[0117] The lower part of the sealing cover 110 is welded with a reinforcing steel plate and anchoring steel bars, so that the sealing cover 110 can be tightly anchored to the counterweight concrete.

[0118] Pull rings are pre-embedded in the concrete to serve as lifting points for the subsequent installation and removal of the sealing cap 110.

[0119] The counterweight 120 is connected to the top buoy 142 via a steel wire rope, so that after the sealing device is installed, the buoy 142 floats on the water surface, allowing the steel wire rope and pull ring to be quickly located and the sealing device to be removed, facilitating the subsequent recovery of the sealing device.

[0120] This application provides a sealing device for steel pipe piles, including a sealing cover 110 and a counterweight 120; the sealing cover 110 and the counterweight 120 are fixedly connected; the sealing device is used to seal the opening of the steel pipe pile; when the sealing device is placed over the opening of the steel pipe pile, the sealing cover 110 is sealed to the opening of the steel pipe pile, and the counterweight 120 is located inside the steel pipe pile.

[0121] After the steel pipe piles are driven, a sealing device is installed. The sealing cover 110 of the sealing device can effectively prevent marine organisms and silt from flowing into the pile, thus avoiding affecting the grouting quality of the steel pipe piles.

[0122] The counterweight 120 serves as a counterweight and guide, preventing the sealing cover 110 from being too light and being washed away by the water flow, thereby improving the alignment efficiency between the sealing cover 110 and the steel pipe pile and the stability after installation.

[0123] The bottom of the wire rope is connected to the pull ring embedded in the counterweight concrete of the sealing cover 110, and the top of the wire rope is connected to the buoy 142 through the shackle 143. After the sealing device is installed, the buoy 142 floats on the water surface, which can quickly locate the wire rope and pull ring, remove the sealing device, and facilitate the subsequent recovery of the sealing device.

[0124] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0125] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0126] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing device for steel pipe piles, characterized in that, Includes a sealing cap (110) and a counterweight (120); The sealing cap (110) and the counterweight (120) are fixedly connected; The sealing device is used to seal the opening of the steel pipe pile; When the sealing device is placed over the opening of the steel pipe pile, the sealing cover (110) is sealed to the opening of the steel pipe pile, and the counterweight (120) is located inside the steel pipe pile.

2. The sealing device according to claim 1, characterized in that, The sealing cap (110) has a plate-like structure; The orthographic projection of the sealing cover (110) in the direction from the sealing cover (110) to the steel pipe pile at least covers the opening of the steel pipe pile.

3. The sealing device according to claim 1, characterized in that, It also includes the reinforcement section (130); The reinforcing part (130) is embedded in the counterweight (120), and the reinforcing part (130) is fixedly connected to the sealing cover (110).

4. The sealing device according to claim 3, characterized in that, The reinforcing part (130) includes a plurality of reinforcing plates (131) and / or a plurality of reinforcing ribs (132).

5. The sealing device according to any one of claims 1 to 4, characterized in that, It also includes the lifting mechanism; One end of the lifting part passes through the sealing cover (110) and is fixedly connected to the counterweight (120); The other end of the lifting part is located on the side of the sealing cover (110) opposite to the counterweight (120).

6. The sealing device according to any one of claims 1 to 4, characterized in that, It also includes a floating component (140); One end of the float (140) passes through the sealing cap (110) and is fixedly connected to the counterweight (120); The other end of the float (140) is located on the side of the sealing cap (110) opposite to the counterweight (120); When the sealing device is placed over the opening of the steel pipe pile, at least a portion of the structure of the floating element (140) is above the water surface.

7. The sealing device according to claim 6, characterized in that, The floating component (140) includes a fixing part (141), a buoy (142), and a shackle (143). One end of the fixing part (141) passes through the sealing cover (110) and is fixedly connected to the counterweight (120); The other end of the fixing part (141) is located on the side of the sealing cover (110) away from the counterweight (120), and is fixedly connected to the buoy (142) by the shackle (143).

8. The sealing device according to claim 7, characterized in that, The fixing part (141) includes a pull ring and a steel wire rope; The pull ring is embedded in the counterweight (120); One end of the steel wire rope passes through the sealing cap (110) and is fixedly connected to the pull ring; The other end of the wire rope is located on the side of the sealing cover (110) away from the counterweight (120) and is fixedly connected to the buoy (142) by the shackle (143).

9. The sealing device according to any one of claims 1 to 4, characterized in that, The sealing cap (110) is made of steel plate.

10. The sealing device according to any one of claims 1 to 4, characterized in that, The counterweight (120) is a conical concrete structure; The conical concrete structure includes a large end and a small end; The large end is fixedly connected to the sealing cap (110).