Groove pipe clamp with multi-layer composite coating structure

Abstract

The utility model discloses a groove pipe clamp with a multi-layer composite coating structure, which comprises a pipe clamp body, an anti-corrosion coating is arranged on the surface of the pipe clamp body, bayonet structures are arranged at two ends of the pipe clamp body, wear-resistant protective layers are arranged on the surfaces of the bayonet structures of the pipe clamp body, which are in contact with a pipeline, and the wear-resistant protective layers are arranged on the surfaces of the bayonet structures of the pipe clamp body. And the wear-resistant protective layer is arranged outside the bayonet structure anti-corrosion coating. According to the groove pipe clamp with the multi-layer composite coating structure, the multi-layer composite protection structure is arranged in the bayonet structure area, so that the overall anti-corrosion performance is kept, meanwhile, the mechanical damage resistance of the anti-corrosion layer at the key quick-wear part is obviously improved or is not damaged, the integrity of the anti-corrosion layer is guaranteed, and the service life of the anti-corrosion layer is prolonged. The service life of the product is prolonged, and the problems that an anti-corrosion layer at a bayonet of an existing groove pipe clamp is easy to damage and difficult to repair are solved.

Description

A grooved pipe clamp with a multi-layer composite coating structure Technical Field

[0001] This utility model belongs to the field of pipeline connection technology in water conservancy engineering, and specifically relates to a grooved pipe clamp with a multi-layer composite coating structure. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Grooved pipe clamps, as a quick-installation and reliable sealing pipe connection component, are widely used in water conservancy projects, municipal water supply, and industrial water transmission systems. They achieve fixation through mechanical interlocking of the clamp with the pipe groove, offering advantages such as convenient installation and good seismic performance. However, with the increasing prevalence of high-pressure water transmission systems (e.g., pressure rating ≥ PN16) and large-diameter pipes (e.g., diameter ≥ DN500), traditional grooved pipe clamps face the following technical bottlenecks:

[0004] Conflict between structural strength and weight: To withstand higher pressures, the pipe clamp body needs to be thickened or made of high-strength cast iron, resulting in increased unit weight and requiring mechanical hoisting equipment for installation. During hoisting, the clamp area is prone to friction with the pipe surface due to stress concentration, causing localized damage to the anti-corrosion coating.

[0005] Localized failure of the anti-corrosion coating: Traditional anti-corrosion solutions use a single homogeneous coating (such as epoxy resin or zinc-based coating). Although the overall anti-corrosion effect is good, the wear rate of the coating at the clamping area is significantly higher than that of other areas due to frequent stress and friction. Once damaged, corrosive media (such as water and chloride ions) penetrate along the coating cracks, accelerating the corrosion of the substrate, resulting in an exponential decrease in the strength of the pipe clamp and a shortened service life.

[0006] The repair process is complex: In the existing technology, after the coating of the bayonet is damaged, it needs to be completely peeled off and recoated, which is costly and difficult to restore the original protective performance. Summary of the Invention

[0007] The purpose of this utility model is to provide a grooved pipe clamp with a multi-layer composite coating structure. By setting a multi-layer composite protective structure in the clamping area, while maintaining the overall anti-corrosion performance, the anti-corrosion layer of key vulnerable parts is significantly improved or damaged-free, ensuring the integrity of the anti-corrosion layer, improving the product service life, and solving the problems of easy damage and difficult repair of the anti-corrosion layer at the clamping part of existing grooved pipe clamps.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0009] In a first aspect, embodiments of this utility model provide a grooved pipe clamp with a multi-layer composite coating structure, including a pipe clamp body, the surface of which is provided with an anti-corrosion coating, and the two ends of which are provided with a locking structure. The surface of the locking structure of the pipe clamp body that contacts the pipe is provided with a wear-resistant protective layer. The wear-resistant protective layer is disposed outside the anti-corrosion coating at the locking position, and the thickness of the wear-resistant protective layer under pressure does not exceed the thickness of the anti-corrosion coating.

[0010] As a further technical solution, the multiple connection structures are arranged symmetrically around the pipe clamp body.

[0011] As a further technical solution, the anti-corrosion coating is uniformly applied to the exterior of the pipe clamp body.

[0012] As a further technical solution, the surface of the anti-corrosion coating on the clamp structure of the pipe clamp body is roughened to form a rough structure.

[0013] As a further technical solution, the outside of the pipe clamp body is provided with multiple connection structures.

[0014] As a further technical solution, the pipe clamp body is set at the connection position of the two pipes, the pipes are provided with pipe grooves, and the clamp structure is engaged with the pipe grooves.

[0015] As a further technical solution, the length of the pipe trench along the pipe axial direction is greater than the length of the bayonet structure along the pipe axial direction.

[0016] As a further technical solution, a sealing ring is provided between the pipe clamp body and the pipe.

[0017] As a further technical solution, the sealing ring is disposed at the connection point of the two pipes.

[0018] As a further technical solution, the wear-resistant protective layer and the anti-corrosion coating are integrated into a single structure through adhesives or chemical bonding.

[0019] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0020] The grooved pipe clamp with a multi-layer composite coating structure provided by this utility model, by setting a multi-layer composite protective structure in the clamping structure area, while maintaining the overall anti-corrosion performance, significantly improves or eliminates the mechanical damage resistance of the anti-corrosion layer in key vulnerable parts, ensures the integrity of the anti-corrosion layer, improves the service life of the product, solves the problem of easy damage and difficult repair of the anti-corrosion layer at the clamping part of existing grooved pipe clamps, improves the wear resistance and impact resistance of the clamping part, and reduces the coating damage rate.

[0021] At the same time, the thickness of the wear-resistant protective layer under pressure should not exceed the thickness of the anti-corrosion coating. This can prevent excessive gaps in the connection, limit the thickness of the wear-resistant layer to prevent gaps from forming when the pipe clamp and the pipe are engaged due to excessive coating thickness, ensure sealing, and achieve stress balance. The thin layer of wear-resistant material can buffer the impact force and prevent stress concentration in the anti-corrosion layer due to excessive thickness, ensuring a balance between anti-corrosion and wear-resistant functions and not affecting the structural stability after the pipe clamp is installed. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 is a side view of a grooved pipe clamp with a multi-layer composite coating structure provided in Embodiment 1 of this utility model;

[0024] Figure 2 is a front sectional view of a grooved pipe clamp with a multi-layer composite coating structure provided in Embodiment 1 of this utility model;

[0025] Figure 3 is a schematic diagram of the bayonet structure and the pipe groove provided in Embodiment 1 of this utility model.

[0026] The diagram is for illustrative purposes only.

[0027] The components include: 1. Pipe clamp body; 2. Connection structure; 3. Wear-resistant protective layer; 4. Bayonet structure; 5. Sealing ring; 6. Pipe groove; 7. Anti-corrosion coating; 8. Contact surface; 9. Friction surface. Detailed Implementation

[0028] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] Example 1

[0030] In a typical embodiment of this utility model, as shown in Figures 1-3, a grooved pipe clamp with a multi-layer composite coating structure is provided, including a pipe clamp body 1. The surface of the pipe clamp body 1 is provided with an anti-corrosion coating 7. Both ends of the pipe clamp body 1 are provided with a locking structure 4. The surface of the locking structure 4 of the pipe clamp body 1 that contacts the pipe is provided with a wear-resistant protective layer 3. The wear-resistant protective layer 3 is disposed outside the anti-corrosion coating 7 at the locking position. The thickness of the wear-resistant protective layer 3 under pressure does not exceed the thickness of the anti-corrosion coating 7.

[0031] In this embodiment, the anti-corrosion coating 7 covers the surface of the pipe clamp body 1, blocking corrosive media such as water and oxygen from contacting the substrate and providing overall anti-corrosion protection; the wear-resistant protective layer 3, for vulnerable parts of the clamp, reduces friction damage through highly wear-resistant materials and protects the integrity of the internal anti-corrosion layer.

[0032] The two layers work synergistically, forming a "whole + local" dual-layer protection system that balances comprehensive corrosion protection with the ability of key parts to resist mechanical damage. The external design of the wear-resistant layer avoids direct wear on the anti-corrosion layer, extending the service life of the pipe clamp.

[0033] In this embodiment, the thickness of the wear-resistant protective layer 3 under pressure does not exceed the thickness of the anti-corrosion coating 7. This avoids excessive gaps in the connection, limits the thickness of the wear-resistant layer to prevent gaps from forming when the pipe clamp and pipe are engaged due to excessive coating thickness, ensures sealing, and achieves stress balance. The thin layer of wear-resistant material can buffer impact force and avoid stress concentration in the anti-corrosion layer due to excessive thickness, ensuring a balance between anti-corrosion and wear-resistant functions and not affecting the structural stability of the pipe clamp after installation.

[0034] Furthermore, the anti-corrosion coating 7 is uniformly applied to the exterior of the pipe clamp body 1.

[0035] In this embodiment, the above-mentioned settings can achieve comprehensive protection for the pipe clamps. The homogeneous anti-corrosion coating 7 can eliminate local weak points and prevent corrosive media from penetrating from uneven coating areas. The uniform coverage can be achieved by electrophoresis or spraying processes, which improves the reliability of the anti-corrosion layer. The process is mature and reliable. The anti-corrosion coating 7 provides a complete base for the wear-resistant layer, ensuring the effectiveness of local reinforcement protection.

[0036] Furthermore, the surface of the anti-corrosion coating 7 of the clamp structure 4 located on the pipe clamp body 1 is roughened to form a rough structure.

[0037] In this embodiment, the above-mentioned settings can enhance the adhesion between the anti-corrosion coating 7 and the wear-resistant protective layer 3. The rough surface increases the adhesion of the wear-resistant protective layer 3 by more than 50%, preventing the two from delaminating and achieving interface anchoring. A micro-anchoring structure is formed by sandblasting or chemical etching, which improves the bonding strength of the two coatings. At the same time, the wear-resistant protective layer 3 and the anti-corrosion coating 7 are bonded together by adhesives or chemical bonding to form an integrated structure, making the entire composite layer structure more stable.

[0038] Furthermore, the pipe clamp body 1 is provided with a plurality of connecting structures 2 on its exterior, and the plurality of connecting structures 2 are arranged symmetrically around the pipe clamp body 1.

[0039] This design improves the ease of pipe clamp installation. The connection structure 2 (such as bolt holes or clips) facilitates quick pipe clamp fixation, reducing manual operation time. At the same time, multiple connection structures 2 are evenly distributed on the outside of the pipe clamp body 1 to disperse stress. The multi-connection point design disperses the force on the pipe clamp, avoiding local overload that could damage the coating. Combined with the bayonet structure 4, it enhances the overall mechanical stability.

[0040] Furthermore, the pipe clamp body 1 is set at the connection position of the two pipes, the pipes are provided with pipe grooves 6, and the clamp structure 4 is engaged with the pipe grooves 6.

[0041] Furthermore, the length of the pipe trench 6 along the pipe axial direction is greater than the length of the bayonet structure 4 along the pipe axial direction.

[0042] In this embodiment, the side of the bayonet structure 4 that engages with the pipe groove 6 is provided with a contact surface 8, and the bottom surface of the bayonet structure 4 that engages with the pipe groove 6 is provided with a friction surface 9. Both the contact surface 8 and the friction surface 9 are provided with a wear-resistant protective layer 3.

[0043] With the above settings, pipe clamps can be installed quickly. The mechanical engagement between the clamp structure 4 and the pipe groove 6 simplifies the installation steps, eliminating the need for complex tools. Furthermore, the redundant length of the pipe groove 6 allows the clamp to adapt to displacement during thermal expansion and contraction of the pipe, preventing the coating from cracking due to deformation. The protective wear-resistant layer provides comprehensive protection for the engagement area between the clamp structure 4 and the pipe groove 6. In addition, the above settings, together with the sealing ring 5, achieve a dual guarantee of "mechanical fixing + flexible sealing".

[0044] Furthermore, a sealing ring 5 is provided between the pipe clamp body 1 and the pipe.

[0045] Furthermore, the sealing ring 5 is disposed at the connection point of the two pipes.

[0046] In this embodiment, the sealing ring 5 (such as rubber or silicone) fills the gap between the pipe clamp and the pipe to prevent water leakage and achieve a leak-proof seal. The elastic sealing material absorbs the vibration energy of the pipe, reduces the impact frequency of the coating, and achieves vibration buffering. In addition, combined with the bayonet structure 4, the sealing ring 5 enhances the sealing performance on the basis of mechanical interlocking and reduces the risk of corrosion.

[0047] Furthermore, the wear-resistant protective layer 3 and the anti-corrosion coating 7 are bonded together by adhesives or chemical bonding to form an integrated structure.

[0048] In this embodiment, the above-mentioned configuration can improve the anti-delamination ability of the composite layer structure. Chemical bonding (such as silane coupling agent) or adhesive improves the bonding strength of the double coating, resists external peeling, and optimizes stress transmission. The integrated structure evenly disperses external impacts to the anti-corrosion layer, avoiding local stress concentration.

[0049] This utility model provides a grooved pipe clamp with a multi-layer composite coating structure. By setting a multi-layer composite protective structure in the clamping area, it significantly improves or eliminates mechanical damage resistance of the anti-corrosion layer in key vulnerable areas while maintaining overall anti-corrosion performance. This ensures the integrity of the anti-corrosion layer, extends product service life, solves the problems of easy damage and difficult repair of the anti-corrosion layer at the clamping area of ​​existing grooved pipe clamps, improves the wear resistance and impact resistance of the clamping area, reduces the coating damage rate, simplifies the local repair process, extends the service life of the pipe clamp, and optimizes the frictional resistance during installation, improving construction efficiency.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grooved pipe clamp with a multi-layer composite coating structure, characterized in that, The device includes a pipe clamp body, the surface of which is provided with an anti-corrosion coating, and both ends of which are provided with a locking structure. The surface of the locking structure of the pipe clamp body that contacts the pipe is provided with a wear-resistant protective layer. The wear-resistant protective layer is disposed outside the anti-corrosion coating of the locking structure, and the thickness of the wear-resistant protective layer under pressure does not exceed the thickness of the anti-corrosion coating.

2. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 1, characterized in that, The anti-corrosion coating is uniformly applied to the exterior of the pipe clamp body.

3. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 1, characterized in that, The surface of the anti-corrosion coating on the clamp structure located on the pipe clamp body is roughened to form a rough structure.

4. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 1, characterized in that, The pipe clamp body has multiple connection structures on its exterior.

5. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 4, characterized in that, The multiple connection structures are arranged symmetrically around the pipe clamp body.

6. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 1, characterized in that, The pipe clamp body is set at the connection position of two pipes, and the pipes have pipe grooves. The clamp structure is engaged with the pipe grooves.

7. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 6, characterized in that, The length of the pipeline trench along the pipeline axial direction is greater than the length of the bayonet structure along the pipeline axial direction.

8. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 6, characterized in that, A sealing ring is provided between the pipe clamp body and the pipe.

9. A grooved pipe clamp with a multi-layer composite coating structure as described in claim 8, characterized in that, The sealing ring is installed at the connection point of the two pipes.

10. The grooved tube sheet of claim 1 having a multi-layer composite coating structure, wherein, The wear-resistant protective layer and the anti-corrosion coating are integrated into a single structure through adhesives or chemical bonding.

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