Corrosion-resistant concrete pipe

Abstract

The utility model provides a corrosion-resistant concrete pipe, which belongs to the technical field of pipelines, and comprises a concrete layer, an annular reinforcement cage is arranged in the concrete layer, the reinforcement cage is formed by spirally winding a plurality of first annular reinforcements, and a plurality of second annular reinforcements are further arranged corresponding to the first annular reinforcements. The plurality of second ring ribs are also spirally wound, the spiral direction of the second ring ribs is opposite to that of the first ring ribs, and the plurality of first ring ribs and the plurality of second ring ribs are arranged in a staggered manner; the first ring ribs and the second ring ribs are made of glass fibers or basalt fibers; the annular reinforcement cage made of the glass fibers or the basalt fibers can replace a traditional reinforcement cage, higher tensile strength and higher shear strength are provided, and meanwhile the self weight of the pipeline is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline equipment technology, specifically to a corrosion-resistant concrete pipe. Background Technology

[0002] In modern industry and infrastructure construction, pipeline systems, as key carriers of fluid transportation, directly affect the operational efficiency and safety of the entire system through their performance and reliability. Traditional pipeline materials, such as reinforced concrete pipes and ductile iron pipes, have long played a vital role in municipal water supply, drainage, and industrial fluid transportation. However, with industrial development and increasing environmental complexity, the limitations of these traditional materials in specific environments are becoming increasingly apparent.

[0003] First, insufficient corrosion resistance is a major challenge for traditional pipe materials. In environments containing corrosive chemicals, such as sewage treatment plants, seawater desalination stations, or wastewater discharge systems of chemical enterprises, reinforced concrete pipes are susceptible to chemical corrosion, leading to structural deterioration, reduced strength, and ultimately, pipe rupture and leaks. Although ductile iron pipes have better mechanical properties, they are also susceptible to corrosion damage under extreme corrosive conditions such as strong acids and alkalis, shortening the service life of the pipes and increasing maintenance costs.

[0004] Secondly, poor environmental adaptability is a major drawback of traditional pipe materials. In areas with abundant groundwater, external water pressure may damage the outer wall of the pipe, increasing the load on sewage treatment and causing unnecessary economic losses. At the same time, when the water pressure inside the pipe is too high, traditional materials may leak due to insufficient pressure resistance, wasting water resources and potentially polluting the surrounding soil, thus affecting the ecological environment.

[0005] Furthermore, the heavy weight and high construction difficulty are also significant problems associated with traditional piping materials. Reinforced concrete and ductile iron pipes, due to their high material density, result in heavy self-weight, requiring large machinery for transportation and installation, thus increasing construction difficulty and cost. This problem is particularly pronounced in construction environments with complex terrain and limited space. Utility Model Content

[0006] In view of this, the present invention provides a corrosion-resistant concrete pipe. The annular reinforcing cage made of glass fiber or basalt fiber can not only replace the traditional steel cage, providing higher tensile and shear strength, but also reduce the self-weight of the pipe.

[0007] To solve the above-mentioned technical problems, this utility model provides a corrosion-resistant concrete pipe, including a concrete layer, and an annular reinforcing cage provided in the concrete layer. The annular reinforcing cage can provide support for the concrete. The reinforcing cage includes a plurality of first annular reinforcing bars spirally wound together and arranged in a linear array. Corresponding to the first annular reinforcing bars, a plurality of second annular reinforcing bars are also provided, which are also arranged in an annular array and spirally wound together. The spiral direction of the second annular reinforcing bars is opposite to that of the first annular reinforcing bars. The plurality of first annular reinforcing bars and the plurality of second annular reinforcing bars are arranged alternately.

[0008] Both the first and second ring reinforcements are made of glass fiber or basalt fiber.

[0009] A third ring bar connects the ends of multiple first ring bars and multiple second ring bars, and the third ring bar can further enhance the structural strength of the cage from both sides.

[0010] Multiple pits are provided on the outer surfaces of the first and second ring bars to prevent excessive stress in local areas of the first and second ring bars.

[0011] An external anti-corrosion layer is also provided on the outside of the concrete layer, which can further protect the concrete layer from corrosion from the outside.

[0012] An internal anti-corrosion layer is also provided inside the concrete layer, which can further protect the concrete layer from corrosion from the inside.

[0013] One end of the concrete pipe is equipped with a connector pipe, and the other end of the concrete pipe is equipped with a ring groove corresponding to the connector pipe. The connector pipe and the ring groove facilitate the connection between multiple pipes.

[0014] The connector tube is made of flexible material and is formed by winding a wide rubber sealing ring and fiberglass.

[0015] The outer surface of the annular groove is also equipped with a sealing ring, which can maintain the seal at the pipe connection.

[0016] The sealing ring is made of expanded rubber and has the dual functions of elastic waterproofing and expansion waterproofing.

[0017] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0018] 1. Excellent corrosion resistance:

[0019] This invention uses a ring-shaped reinforcing cage made of glass fiber or basalt fiber to replace the traditional reinforcing cage, fundamentally solving the problem of steel corrosion in corrosive environments. Glass fiber or basalt fiber has excellent corrosion resistance and can resist the erosion of chemicals such as acids, alkalis, and salts for a long time, thereby extending the service life of the pipeline and reducing maintenance costs.

[0020] Both the exterior and interior of the concrete layer are equipped with anti-corrosion layers, further enhancing the pipeline's corrosion resistance. The outer anti-corrosion layer effectively resists corrosive factors in the external environment, while the inner anti-corrosion layer prevents the fluid inside the pipeline from eroding the concrete layer, achieving comprehensive anti-corrosion protection.

[0021] 2. Excellent structural strength and stability:

[0022] The annular reinforcement cage is composed of multiple staggered first and second ring reinforcements, with the ring reinforcements spirally wound. This structure not only provides higher tensile and shear strength but also enhances the overall stability of the pipeline. The first and second ring reinforcements, with opposite spiral directions, interlock to form a more robust support system.

[0023] The outer surface of the ring reinforcement has multiple pits, which effectively avoids excessive local stress, reduces stress concentration and damage to the pipeline structure, and further improves the load-bearing capacity and service life of the pipeline.

[0024] 3. Reduce weight and lower construction difficulty:

[0025] Fiberglass or basalt fiber has a much lower density than traditional steel reinforcement, so using annular reinforcing cages made of fiberglass or basalt fiber can significantly reduce the weight of pipelines. This not only reduces costs during transportation and installation but also makes pipelines easier to install and adjust in complex terrain and space-constrained construction environments.

[0026] 4. Good environmental adaptability:

[0027] The corrosion-resistant concrete pipe of this invention has excellent pressure resistance, capable of withstanding large external water pressure and internal fluid pressure, and is not prone to cracking or leakage. This allows the pipeline to maintain stable operation even in environments with abundant groundwater or high water pressure.

[0028] The connector pipe is made of flexible material and equipped with a sealing ring to ensure the airtightness of the pipe connection. This design makes the pipeline more flexible in responding to environmental changes (such as temperature changes, soil settlement, etc.), reducing environmental pollution and resource waste caused by leaks at the connection.

[0029] 5. Improve construction efficiency and safety:

[0030] Due to the reduced weight and increased structural strength of the pipeline, no large machinery is required during construction, thus reducing construction difficulty and costs. At the same time, pipeline installation and adjustment are more convenient, improving construction efficiency.

[0031] Excellent corrosion resistance and structural stability reduce the failure rate of pipelines during use and improve the safety and reliability of pipeline systems.

[0032] 6. Multifunctionality and scalability:

[0033] This invention relates to corrosion-resistant concrete pipes, which are not only suitable for conventional applications such as municipal water supply and drainage, but can also be widely used in extreme corrosive environments such as chemical processing and seawater desalination. Its versatility allows the pipeline system to adapt to more complex working conditions.

[0034] The pipeline design is flexible, allowing for adjustments to parameters such as the number, diameter, and spacing of ribs to meet specific needs and achieve customized pipeline performance. Furthermore, the design of the joint pipes and sealing rings facilitates pipeline expansion and maintenance. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of a corrosion-resistant concrete pipe according to the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the reinforcing cage of this utility model;

[0037] Figure 3 This is a schematic diagram of the structure of the recess in this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Concrete layer; 110. Reinforcing cage; 111. First ring reinforcement; 112. Second ring reinforcement; 113. Third ring reinforcement; 114. Depression;

[0040] 200. External anti-corrosion layer;

[0041] 300. Internal anti-corrosion layer;

[0042] 400, Connector pipe; 401, Annular groove; 402, Sealing ring. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0044] This embodiment provides a corrosion-resistant concrete pipe, such as Figure 1 , 2As shown: It includes an inner anti-corrosion layer 300, a concrete layer 100, and an outer anti-corrosion layer 200 arranged sequentially from the inside to the outside. The inner anti-corrosion layer 300 and the outer anti-corrosion layer 200 can protect the concrete layer 100 from corrosion from the inside and outside of the pipe. The concrete layer 100 is made of resin and aggregate mixture, and the concrete layer 100 is also provided with an annular reinforcing cage 110 to provide support for the concrete layer 100.

[0045] Specifically, the reinforcing cage 110 includes first ring bars 111 arranged in a linear array and second ring bars 112 arranged in a linear array. The first ring bars 111 and the second ring bars 112 are both spirally wound, with the spiral directions of the first ring bars 111 and the second ring bars 112 being opposite. The first ring bars 111 and the second ring bars 112 are interlocked to form an interlocking effect, thereby enhancing the structural strength of the concrete layer 100. Furthermore, a third ring bar 113 is provided between the ends of the multiple first ring bars 111 and the multiple second ring bars 112. The third ring bars 113 can further enhance the structural strength on both sides of the pipe. At the same time, multiple rows of recesses 114 are provided on the first ring bars 111, the second ring bars 112 and the third ring bars 113. By setting the recesses 114, the phenomenon of excessive local stress is effectively avoided, the damage of stress concentration to the pipe structure is reduced, and the load-bearing capacity and service life of the pipe are further improved.

[0046] Furthermore, both the first ring reinforcement 111 and the second ring reinforcement 112 are made of glass fiber or basalt fiber. That is, the density of glass fiber or basalt fiber is much lower than that of traditional steel bars. Therefore, the ring reinforcement cage 110 made of glass fiber or basalt fiber can significantly reduce the self-weight of the pipeline.

[0047] The concrete layer 100 is provided with an external anti-corrosion layer 200, which is made of either glass fiber or fiber cloth mixed with resin. This material combination has excellent chemical corrosion resistance and anti-aging properties, and can effectively resist corrosive factors in the external environment. The concrete layer 100 is provided with an internal anti-corrosion layer 300, which is made of either pure resin or fiber filaments mixed with resin. This internal anti-corrosion layer 300 not only further enhances the corrosion resistance of the pipeline, but also effectively prevents the fluid inside the pipeline from eroding the concrete layer 100, achieving all-round anti-corrosion protection.

[0048] It is worth mentioning that one end of the concrete pipe is equipped with a 400mm connector, such as... Figure 1As shown: The corresponding connector pipe 400 has an annular groove 401 at the other end of the concrete pipe. The connector pipe 400 is used to insert into the outside of the annular groove 401 on another concrete pipe, thereby achieving the connection between the two concrete pipes. The connector pipe 400 is made of a flexible material, formed by winding a wide-body rubber sealing ring 402 and fiberglass. That is, it adopts a fiberglass winding molding process. Fiberglass (glass fiber reinforced plastic) itself has excellent chemical corrosion resistance and can resist the erosion of chemicals such as acids, alkalis, and salts for a long time. This material selection allows the connector to maintain stable performance in harsh corrosive environments, extending the service life of the pipeline system.

[0049] The 402 wide-body rubber sealing ring undergoes special treatment and possesses excellent corrosion resistance. It can work together with the fiberglass joint to resist the damage of external corrosive factors and ensure the long-term reliability of the joint.

[0050] Furthermore, a sealing ring 402 is provided on the outer surface of the annular groove 401. This sealing ring 402 is made of expanded rubber. The expanded rubber sealing ring 402 has excellent elasticity and can fit tightly against the pipe opening when the pipe is connected, forming an effective sealing barrier. This high elasticity allows the sealing ring 402 to adapt to the slight displacement and deformation of the pipe caused by factors such as temperature changes and pressure fluctuations, ensuring a long-term stable sealing effect.

[0051] Reduced leakage risk: The flexible water-stop function effectively prevents fluid leakage from inside the pipe through the joints, ensuring the normal operation of the pipeline system. At the same time, it also reduces resource waste and environmental pollution caused by leakage.

[0052] The expandable rubber sealing ring 402 expands rapidly upon contact with moisture, filling tiny gaps and voids at pipe joints and further enhancing the sealing effect. This water-swelling property allows the sealing ring 402 to maintain excellent sealing performance in humid or underwater environments.

[0053] The expansion sealing function allows the sealing ring 402 to adapt to more complex operating conditions, such as high groundwater levels or pipelines crossing rivers or lakes. Under these conditions, the expansion rubber sealing ring 402 provides additional sealing protection, ensuring the safe and stable operation of the pipeline system.

[0054] Furthermore, it should be noted that, in the description of this utility model, 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 according to the specific circumstances.

[0055] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A corrosion-resistant concrete pipe, characterized in that: The concrete layer (100) includes a concrete layer (100) and an annular reinforcing cage (110) is provided inside the concrete layer (100). The reinforcing cage (110) includes a plurality of first annular reinforcing bars (111) spirally wound together. Corresponding to the first annular reinforcing bars (111), a plurality of second annular reinforcing bars (112) are also spirally wound together. The spiral direction of the second annular reinforcing bars (112) is opposite to that of the first annular reinforcing bars (111). The plurality of first annular reinforcing bars (111) and the plurality of second annular reinforcing bars (112) are arranged alternately. Both the first ring reinforcement (111) and the second ring reinforcement (112) are made of glass fiber or basalt fiber.

2. The corrosion-resistant concrete pipe as described in claim 1, characterized in that: A third ring bar (113) is connected between the ends of the plurality of first ring bars (111) and the plurality of second ring bars (112).

3. The corrosion-resistant concrete pipe as described in claim 1, characterized in that: The outer surfaces of the first ring rib (111) and the second ring rib (112) are provided with a plurality of pits (114).

4. The corrosion-resistant concrete pipe as described in claim 1, characterized in that: The concrete layer (100) is also provided with an external anti-corrosion layer (200).

5. The corrosion-resistant concrete pipe as described in claim 1, characterized in that: The concrete layer (100) is also provided with an internal anti-corrosion layer (300).

6. The corrosion-resistant concrete pipe as described in claim 1, characterized in that: One end of the concrete pipe is provided with a connector pipe (400), and a ring groove (401) is provided at the other end of the concrete pipe corresponding to the connector pipe (400).

7. A corrosion-resistant concrete pipe as described in claim 6, characterized in that: The connector tube (400) is made of a flexible material.

8. A corrosion-resistant concrete pipe as described in claim 6 or 7, characterized in that: The outer surface of the annular groove (401) is also provided with a sealing ring (402).

9. A corrosion-resistant concrete pipe as described in claim 8, characterized in that: The sealing ring (402) is made of expanded rubber.

Images