Corrosion-resistant spheroidal graphite cast iron pipe with high strength and high explosion-proof performance

Abstract

The utility model discloses a corrosion-resistant spheroidal graphite cast iron pipe with high strength and high explosion-proof performance, which comprises a first pipeline, a second pipeline and a rubber sleeve, a flange is arranged on one side of the outer surface of the second pipeline, a chamfer is arranged on one side of the inner surface of the flange, and the rubber sleeve can be clamped on the inner side of the flange. And one side of the outer surface of the flange is in threaded connection with a bolt. According to the corrosion-resistant spheroidal graphite cast iron pipe with the high strength and the high explosion-proof performance, through the arrangement of the first pipeline, the second pipeline, the rubber sleeve, a flange and a bolt, when the corrosion-resistant spheroidal graphite cast iron pipe is used, a user needs to connect the spheroidal graphite cast iron pipe, the bolt is rotated to be loosened, the flange is opened towards the two sides, and the second pipeline penetrates through the flange and the interior of the rubber sleeve; one side of the second pipeline is in contact with one side of the first pipeline, a user rotates the bolt to enable the flanges on the two sides to contract, a chamfer is arranged inside, the rubber sleeve is extruded towards the middle, the rubber sleeve is attached to the outer wall of the second pipeline, and the rapid connection effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ductile iron pipe technology, and in particular to a corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance. Background Technology

[0002] Ductile iron pipes, through special manufacturing processes and material formulations, significantly enhance mechanical strength and corrosion resistance, enabling them to adapt to complex environmental conditions. Their high strength and explosion-proof performance make them valuable in municipal engineering, chemical industry, and marine engineering. At the same time, their corrosion resistance greatly extends service life and reduces maintenance costs, providing a reliable pipeline solution for modern engineering construction. The promotion and application of this technology is of great significance for improving the safety and durability of infrastructure.

[0003] A search revealed Chinese Patent Publication No. CN219571137U, which discloses a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance. This patent addresses the issue of insufficient explosion-proof performance by covering the inner surface of the explosion-proof layer with an epoxy resin layer, reinforcing ribs inside the ductile iron layer, and an anti-corrosion layer consisting of a zinc layer and a high-chlorinated polyethylene layer. The inner surface of the zinc layer is covered with the ductile iron layer, and the outer surface is covered with the high-chlorinated polyethylene layer. While this patent solves the problem of insufficient explosion-proof performance, corrosion-resistant ductile iron pipes often use welding connections. Although this method is reliable and ensures the strength and sealing of the pipe, it requires cutting and re-welding during disassembly, which is cumbersome and time-consuming. Furthermore, fibrous materials and graphene can significantly enhance the mechanical properties of materials, making them more resistant to high pressure and impact. Without these materials, the performance of the pipe may decline under harsh conditions, making it prone to deformation or damage. Therefore, it is necessary to design a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance. Utility Model Content

[0004] The main objective of this invention is to provide a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A corrosion-resistant ductile iron pipe with high strength and explosion-proof performance includes a first pipe, a second pipe, and a rubber sleeve. A flange is provided on one side of the outer surface of the second pipe, and a chamfer is provided on one side of the inner surface of the flange. The rubber sleeve can be snapped into the inside of the flange. A bolt is threadedly connected to one side of the outer surface of the flange. There are two flanges on one side.

[0007] To provide support, the first pipe, which is a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance according to this utility model, has a support foot fixedly connected to one side of its lower surface and a reinforcing rib fixedly connected to one side of its outer surface.

[0008] In order to achieve the effects of pressure resistance and corrosion resistance, the first pipe, which is a corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance, is coated with Wuyan fiber hybrid composite material on one side of its outer surface.

[0009] To achieve corrosion resistance, the first pipe, which is a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance according to this utility model, has a corrosion inhibitor coated on one side of its outer surface. The corrosion inhibitor is made of graphene-modified epoxy + self-healing microcapsule coating.

[0010] In order to enhance the friction clamping function, as a corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to this utility model, a fixing plate is fixedly connected to one side of the inner surface of the rubber sleeve.

[0011] To prevent air leakage, a rubber pad is movably connected to one side of the outer surface of the first pipe, which is a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance according to this utility model.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, through the arrangement of the first pipe, the second pipe, the rubber sleeve, the flange, and the bolts, the user needs to connect the cast iron pipe during use. By rotating the bolts to loosen it, the flanges open to both sides, and the second pipe passes through the flanges and the inside of the rubber sleeve. One side of the second pipe contacts one side of the first pipe. The user rotates the bolts to make the flanges on both sides contract. Through the chamfering provided inside, the rubber sleeve is squeezed towards the middle, and the rubber sleeve is close to the outer wall of the second pipe, achieving a quick connection effect.

[0014] 2. In this utility model, through the setting of support feet, reinforcing ribs, Wuyan fiber hybrid composite material, and corrosion inhibitor, the support feet are used to support the pipeline during use, preventing the pipeline from directly contacting the ground. By coating the outside of the pipeline with a composite material made of Wuyan fiber and other materials, a protective layer is formed. This protective layer can effectively improve the pipeline's corrosion resistance, pressure resistance, and impact resistance, thereby ensuring the safe and stable operation of the pipeline in harsh environments. The corrosion inhibitor provides a highly efficient and intelligent anti-corrosion protection through the synergistic effect of graphene-modified epoxy resin and self-healing microcapsules. Graphene enhances the mechanical strength and conductivity of the coating, while the self-healing microcapsules endow the coating with the ability to actively repair itself, enabling the pipeline to maintain stable and long-term anti-corrosion performance even in complex and harsh environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the support foot structure according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the reinforcing rib structure according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the preservative structure according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the rubber sleeve structure according to an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the flange structure according to an embodiment of the present utility model.

[0021] In the diagram: 1. First pipe; 2. Second pipe; 3. Rubber sleeve; 4. Flange; 5. Bolt; 6. Support leg; 7. Reinforcing rib; 8. Wuyan fiber hybrid composite material; 9. Corrosion inhibitor; 10. Fixing plate; 11. Rubber pad. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figure 1-6 As shown, a corrosion-resistant ductile iron pipe with high strength and explosion-proof performance includes a first pipe 1, a second pipe 2 and a rubber sleeve 3. A flange 4 is provided on one side of the outer surface of the second pipe 2, and a chamfer is provided on one side of the inner surface of the flange 4. The rubber sleeve 3 can be snapped into the inside of the flange 4, and a bolt 5 is threadedly connected to one side of the outer surface of the flange 4.

[0025] In this embodiment, there are two flanges on one side.

[0026] In practical use, the user needs to connect the cast iron pipe. Loosen the bolt 5 by turning it, and the flange 4 will open to both sides. The second pipe 2 passes through the flange 4 and the rubber sleeve 3. The second pipe 2 contacts the first pipe 1 on one side. The user turns the bolt 5 to make the flanges 4 on both sides contract. The rubber sleeve 3 is squeezed in the middle by the chamfer inside. The rubber sleeve 3 is close to the outer wall of the second pipe 2, achieving a quick connection effect.

[0027] In this embodiment, a support foot 6 is fixedly connected to one side of the lower surface of the first pipe 1, and a reinforcing rib 7 is fixedly connected to one side of the outer surface of the first pipe 1.

[0028] In practical use, the support feet 6 are fixed to the lower surface of the first pipe 1 to provide mechanical support and prevent the pipe from sinking, deforming or moving due to its own weight or external load. The reinforcing ribs 7 are combined with the pipe to enhance the pipe's tensile strength, compressive strength and impact resistance.

[0029] In this embodiment, one side of the outer surface of the first pipe 1 is coated with Wuyan fiber hybrid composite material 8.

[0030] In practical applications, a protective layer is formed by coating the outside of the pipeline with Wuyan fiber hybrid composite material 8. This protective layer can effectively improve the pipeline's corrosion resistance, pressure resistance, and impact resistance, thereby ensuring the safe and stable operation of the pipeline in harsh environments.

[0031] In this embodiment, one side of the outer surface of the first pipe 1 is coated with a corrosion inhibitor 9, and the material of the corrosion inhibitor 9 is a graphene-modified epoxy + self-healing microcapsule coating.

[0032] In practical applications, corrosion inhibitor 9 provides a highly efficient and intelligent corrosion protection through the synergistic effect of graphene-modified epoxy resin and self-healing microcapsules. Graphene enhances the mechanical strength and conductivity of the coating, while the self-healing microcapsules endow the coating with the ability to actively repair itself, enabling pipelines to maintain stable and long-lasting corrosion protection performance even in complex and harsh environments.

[0033] In this embodiment, a fixing plate 10 is fixedly connected to one side of the inner surface of the rubber sleeve 3.

[0034] In practical use, it is used to increase the clamping capacity of the rubber sleeve 3 on the first pipe 1.

[0035] In this embodiment, a rubber pad 11 is movably connected to one side of the outer surface of the first pipe 1.

[0036] In practical use, the rubber pad 11, due to its soft properties, can closely fit the contact surface between pipe connection components, forming a good sealing effect, preventing the leakage or infiltration of corrosive media or other external substances, and protecting the pipe and connection components from corrosion.

[0037] Working Principle: In use, the system consists of a first pipe 1, a second pipe 2, a rubber sleeve 3, a flange 4, and bolts 5. To connect the cast iron pipe, the user loosens bolts 5, opening flanges 4 to both sides. The second pipe 2 passes through the flanges 4 and the rubber sleeve 3, contacting one side of the first pipe 1. Rotating bolts 5 causes the flanges 4 to contract, and the internal chamfered edges press the rubber sleeve 3 towards the center, bringing it close to the outer wall of the second pipe 2 for a quick connection. The rubber gasket 11, with its softness, tightly conforms to the contact surfaces between the pipe connection components, creating a good seal and preventing leakage or seepage of corrosive media or other external substances. The system protects the pipes and connecting components from corrosion. Support legs support the pipes and prevent direct contact with the ground. A protective layer is formed by coating the outside of the pipes with a composite material made of graphene fiber and other materials. This protective layer effectively improves the pipes' corrosion resistance, pressure resistance, and impact resistance, ensuring safe and stable operation in harsh environments. The corrosion inhibitor 9 provides efficient and intelligent corrosion protection through the synergistic effect of graphene-modified epoxy resin and self-healing microcapsules. Graphene enhances the coating's mechanical strength and conductivity, while the self-healing microcapsules endow the coating with active repair capabilities, enabling the pipes to maintain stable and long-lasting corrosion resistance even in complex and harsh environments.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance, comprising a first pipe (1), a second pipe (2), and a rubber sleeve (3), characterized in that: The second pipe (2) has a flange (4) on one side of its outer surface. The flange (4) has a chamfer on one side of its inner surface. The rubber sleeve (3) can be snapped into the inside of the flange (4). The flange (4) has a bolt (5) threadedly connected to one side of its outer surface. There are two flanges on one side.

2. The corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to claim 1, characterized in that: A support foot (6) is fixedly connected to one side of the lower surface of the first pipe (1), and a reinforcing rib (7) is fixedly connected to one side of the outer surface of the first pipe (1).

3. The corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to claim 1, characterized in that: The outer surface of the first pipe (1) is coated with Wuyan fiber hybrid composite material (8).

4. The corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to claim 1, characterized in that: The outer surface of the first pipe (1) is coated with a corrosion inhibitor (9), and the material of the corrosion inhibitor (9) is graphene modified epoxy + self-healing microcapsule coating.

5. A corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to claim 1, characterized in that: A fixing plate (10) is fixedly connected to one side of the inner surface of the rubber sleeve (3).

6. The corrosion-resistant ductile iron pipe with high strength and high explosion-proof performance according to claim 1, characterized in that: A rubber pad (11) is fixedly connected to one side of the outer surface of the first pipe (1).

Images