Sealing anti-corrosion protection structure for bolt-sphere joint

Abstract

The utility model discloses a bolt-sphere joint sealing anti-corrosion protection structure in the field of bolt-sphere joint protection. The protection structure comprises a flexible sealing mud layer arranged on the surface of a sleeve, a viscous anti-corrosion coating arranged on the surfaces of a sealing plate or a conical head and a steel pipe, and an anti-corrosion belt layer arranged on the surfaces of the flexible sealing mud layer and the anti-corrosion coating. The flexible sealing mud layer, the anti-corrosion coating and the anti-corrosion belt layer are arranged to form double protection, the flexible sealing mud layer is arranged on the outer surface of the sleeve and is consistent with the sealing plate or the conical head in height, the anti-corrosion belt layer is arranged on the outer surface of the sleeve, and the anti-corrosion belt layer is arranged on the outer surface of the sleeve and is consistent with the sealing plate or the conical head in height. The anti-corrosion belt layer can be flatly arranged on the outer surface, a gap is not prone to being reserved in the anti-corrosion belt layer, meanwhile, the outward extension distance of the whole sealing structure is small, the design of the distance between components is not affected, and the sealing structure is simple, easy to disassemble and assemble and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of bolt ball joint protection, and in particular to a sealing and corrosion protection structure for bolt ball joints. Background Technology

[0002] In the broad field of modern engineering construction, bolted ball joints are widely used in numerous large steel structures due to their outstanding characteristics, such as the ability to achieve mass production and efficient and convenient installation. From large public buildings, such as stadiums and convention centers, to various infrastructures in the industrial sector, such as industrial plants, marine engineering facilities, cross-sea bridges, petrochemical, steel, power plant buildings, and offshore photovoltaic projects, bolted ball joints play an irreplaceable and crucial role.

[0003] However, in real-world engineering applications, bolted ball joints face extremely severe corrosion challenges. This is especially true in harsh environments, such as marine structures like offshore buildings and bridges, where bolted ball joints are subjected to continuous erosion from seawater and salty sea breezes. The combined effect of seawater and humid air greatly accelerates the corrosion process. Similarly, in chemical environments, bolted ball joints in building structures are exposed to corrosive chemical atmospheres for extended periods, resulting in particularly severe and complex corrosion. Corrosion significantly reduces the mechanical properties of bolted ball joints, drastically decreasing their load-bearing capacity and ultimately failing to meet the stringent requirements of structural design, thus posing a serious threat to the stability and safety of the entire structure.

[0004] Currently, various anti-corrosion technologies used for bolted ball joints all have certain limitations. Taking anti-corrosion coating technology as an example, this technology has extremely stringent requirements for the surface treatment process. If the surface treatment fails to meet the standard requirements, the adhesion between the coating and the substrate will be severely insufficient. Under the continuous influence of complex working conditions such as long-term vibration and drastic temperature changes, the coating is prone to peeling and flaking. Due to the highly complex shape of bolted ball joints, with numerous welds, grooves, corners, and other special structural parts, it is difficult to ensure uniform coating thickness during coating application. Areas with excessively thin coatings cannot provide sufficient protection for the bolted ball joint, while areas with excessively thick coatings may experience sagging, cracking, and other quality problems, thus significantly reducing the anti-corrosion effect. In addition, the protective life of anti-corrosion coatings is relatively short, and online repair and maintenance work after the structure is put into use is quite difficult. The commonly used hot-dip galvanizing protection technology also has significant drawbacks. The zinc coating thickness formed by this technology is unevenly distributed on the surface of the bolt ball, especially at the threaded parts. Due to their special structure, the zinc liquid has difficulty wetting during the process, resulting in a thinner zinc coating in these areas. In actual use, corrosion is highly likely to occur first at the threads, affecting the bolt's tightening performance and the connection strength of the joint. The hot-dip galvanizing process also carries the risk of hydrogen embrittlement, which reduces the toughness and strength of the metal material. In severe cases, it may lead to brittle fracture of the bolt ball joint, posing a serious safety hazard to the entire structure. Moreover, the maintenance cost of this technology is high; once the zinc coating is damaged, repair work is not only difficult but also costly. In summary, traditional anti-corrosion methods are insufficient to achieve effective corrosion control and long-term reliable protection for bolt ball joints, a critical and challenging area in anti-corrosion engineering. Utility Model Content

[0005] The purpose of this utility model is to provide a bolt ball joint sealing and anti-corrosion protection structure, which provides double sealing and anti-corrosion protection, has a simple structure, and is easy to disassemble and maintain.

[0006] To solve the above technical problems, the following technical solution is adopted:

[0007] This utility model provides a bolt ball joint sealing and anti-corrosion protection structure. The protection structure includes a flexible sealing mud layer disposed on the surface of the sleeve, an adhesive anti-corrosion coating disposed on the surface of the sealing plate or cone and the steel pipe, and an anti-corrosion strip layer disposed on the surface of the flexible sealing mud layer and the adhesive anti-corrosion coating; the sealing plate or cone is disposed between the sleeve and the steel pipe.

[0008] The flexible sealing mud layer is applied to the surface of the sleeve, and its height is consistent with that of the sealing plate or the end face of the cone.

[0009] Optionally, the anti-corrosion strip layer is formed by spirally overlapping and wrapping the anti-corrosion strip tightly against the end of the bolt ball towards the end of the steel pipe.

[0010] Optionally, the anti-corrosion tape is a petrolatum anti-corrosion tape.

[0011] Optionally, the adhesive anti-corrosion coating is applied to the outer surface of the steel pipe with a width of not less than 100 mm.

[0012] Optionally, the adhesive anti-corrosion coating is made of adhesive petrolatum.

[0013] Optionally, the flexible sealing mud layer is filled and wrapped with flexible, non-hardening lightweight mud.

[0014] Optionally, the outer surface of the flexible sealing mud layer is finely treated before being wrapped with an anti-corrosion tape layer.

[0015] Optionally, the steel pipe is connected to a bolt ball by a bolt, one end of the bolt engages with the bolt ball, and the other end extends into the steel pipe. The end of the steel pipe connected to the bolt is sealed by the sealing plate or cone.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0017] 1. This utility model forms a double protection by setting a flexible sealing mud layer, an anti-corrosion coating, and an anti-corrosion strip layer. After the flexible sealing mud layer is set on the outer surface of the sleeve, it is consistent with the height of the sealing plate or cone, so that the anti-corrosion strip layer can be set flat on the outer surface, and there are not many gaps inside. At the same time, the entire sealing structure extends outward by a small distance, which does not affect the design of the spacing between components. This utility model has a simple structure, is easy to disassemble and assemble, and is convenient for maintenance.

[0018] 2. This utility model incorporates a flexible sealing mud layer followed by external finishing to achieve a smooth and even surface. The flexible sealing mud layer forms an effective sealing barrier, preventing water, oxygen, microorganisms, and various corrosive media from penetrating the gaps between the bolt-ball connectors. While ensuring a good sealing effect, it significantly improves the overall structural flexibility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the bolt ball joint sealing and corrosion protection structure in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Bolt ball; 2. Sleeve; 3. Flexible sealing mud layer; 4. Sealing plate; 5. Adhesive anti-corrosion coating; 6. Anti-corrosion strip layer; 7. Steel pipe; 8. Cone head; 9. Bolt. Detailed Implementation

[0022] The technical solutions of the present invention 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 invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0024] This embodiment provides a bolt ball joint sealing and anti-corrosion protection structure, including a flexible sealing mud layer 3, an adhesive anti-corrosion coating 5, and an anti-corrosion strip layer 6. The flexible sealing mud layer 3 is disposed on the outer surface of the sleeve 2 at the connection between the steel pipe 7 and the bolt ball 1. The height of the flexible sealing mud layer 3 is consistent with the end face height of the sealing plate 4 or cone 8 at one end. The sealing plate 4 or cone 8 is disposed on the end face of the steel pipe 7 and is located between the steel pipe 7 and the sleeve 2. The adhesive anti-corrosion coating 5 is disposed on the sealing plate 4 or cone 8 and the outer surface of the steel pipe 7. The anti-corrosion strip layer 6 completely covers the flexible sealing mud layer 3 and the adhesive anti-corrosion coating 5.

[0025] The adhesive anti-corrosion coating 5 is sticky and can firmly adhere to the outer surface of the sealing plate 4 or cone 8 and the steel pipe 7. After the flexible sealing mud layer 3 is applied to the outer surface of the sleeve 2, it is at the same height as the end face of the sealing plate 4 or cone 8, making it difficult for gaps to remain inside. Then, an anti-corrosion strip layer 6 is applied to the outer surface. The entire protective structure does not extend outward much at the connection, so it can be used on bolt balls 1 with a relatively dense design. It will not affect the installation between adjacent steel pipes 7. It also makes the connection structure flat and improves the sealing performance.

[0026] The flexible sealing mud layer 3, the adhesive anti-corrosion coating 5, and the anti-corrosion strip layer 6 provide double protection for the connection between the steel pipe 7 and the bolt ball 1, ensuring good sealing and anti-corrosion effects. Example 2

[0027] This embodiment provides a bolt ball joint sealing and corrosion protection structure based on Embodiment 1.

[0028] like Figure 1 As shown, the steel pipe 7 is connected to the bolt ball 1 by bolt 9. One end of the bolt 9 mates with the bolt ball 1, and the other end extends into the steel pipe 7. The end of the steel pipe 7 connected to the bolt 9 is sealed by the sealing plate 4 or the cone head 8.

[0029] The flexible sealing mud layer 3 is made of flexible, non-hardening, lightweight mud that is tightly and evenly filled and wrapped around the outer surface of the sleeve 2. Its filling thickness is consistent with the height of the end face of the sealing plate 4 or the cone head 8. After filling, the outer surface of the flexible sealing mud layer 3 is finely treated to achieve a smooth and flat surface. The flexible sealing mud layer 3 forms an effective sealing barrier, preventing water, oxygen, microorganisms, and various corrosive media from intruding into the gaps between the bolt ball joints. While ensuring a good sealing effect, it significantly improves the flexibility of the overall structure, allowing it to better adapt to deformations caused by long-term vibration, temperature changes, and other complex working conditions at the bolt ball joint.

[0030] In this embodiment, the flexible sealing mud layer 3 is filled and wrapped with flexible, non-hardening lightweight mud. This material has good plasticity and sealing performance and can closely fit the complex surface of the bolt ball 1 node.

[0031] The adhesive anti-corrosion coating 5 is applied to the outer surface of the steel pipe 7 with a width of not less than 100 mm. The adhesive anti-corrosion coating 5 applied to the surface of the sealing plate 4 or the cone 8 and the outer surface of the steel pipe 7 not only has excellent adhesion properties and can firmly adhere to the substrate surface, but also provides effective anti-corrosion protection for the weld between the steel pipe 7 and the sealing plate 4 or the cone 8.

[0032] In this embodiment, the adhesive anti-corrosion coating 5 is a high-viscosity petrolatum adhesive anti-corrosion coating, which has good corrosion resistance and impermeability.

[0033] An anti-corrosion strip layer 6 is provided on the outer surface of the flexible sealing mud layer 3 and the adhesive anti-corrosion coating 5. Specifically, the anti-corrosion strip layer 6 is made by spirally wrapping a petrolatum-based anti-corrosion strip from the bolt ball 1 end to the steel pipe 7 end, tightly adhering to the bolt ball 1 until it completely covers the adhesive anti-corrosion coating 5 on the outer surface of the steel pipe 7. The anti-corrosion strip layer 6 further enhances the overall structure's anti-corrosion performance, while also providing good protection for the flexible sealing mud layer 3, preventing it from being damaged by external environmental factors.

[0034] In this embodiment, the anti-corrosion layer 6 is made of petrolatum anti-corrosion tape, which has good flexibility and corrosion resistance.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A bolt ball joint sealing and corrosion protection structure, characterized in that, The protection structure comprises a flexible sealing mud layer (3) arranged on the surface of the sleeve (2), a viscous anticorrosive coating (5) arranged on the surface of the sealing plate (4) or the cone head (8) and the steel pipe (7), and an anticorrosive tape layer (6) arranged on the surface of the flexible sealing mud layer (3) and the viscous anticorrosive coating (5); the sealing plate (4) or the cone head (8) is arranged between the sleeve (2) and the steel pipe (7). The surface of the sleeve (2) is arranged with the flexible sealing mud layer (3), and the end surface of the sealing plate (4) or the cone head (8) is consistent with the height of the sleeve (2).

2. The bolted-sphere joint sealing and corrosion protection structure of claim 1, wherein, The anticorrosive tape layer (6) is formed by tightly winding the anticorrosive tape around the end of the bolt ball (1) to the end of the steel pipe (7) in a spiral shape.

3. The bolted-sphere joint sealing and corrosion protection structure of claim 2, wherein, The anticorrosive tape is a petrolatum anticorrosive tape.

4. The bolted-sphere joint sealing and corrosion protection structure of claim 1, wherein, The width of the viscous anticorrosive coating (5) arranged on the outer surface of the steel pipe (7) is not less than 100 mm.

5. The bolted-sphere joint sealing and corrosion protection structure of claim 1, wherein, The viscous anticorrosive coating (5) is made of viscous petrolatum material.

6. The bolted-sphere joint sealing and corrosion protection structure of claim 1, wherein, The flexible sealing mud layer (3) is filled and wrapped by using flexible non-hardened lightweight mud.

7. The bolted-sphere joint seal and corrosion protection structure of claim 1, wherein, The outer surface of the flexible sealing mud layer (3) is finely treated and then wound with the anticorrosive tape layer (6).

8. The bolted-sphere joint sealing and corrosion protection structure of claim 1, wherein, The steel pipe (7) is connected with the bolt ball (1) through a bolt (9), one end of the bolt (9) is matched with the bolt ball (1), the other end of the bolt (9) extends into the steel pipe (7), and the end of the steel pipe (7) connected with the bolt (9) is sealed by the sealing plate (4) or the cone head (8).

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