Novel reinforced concrete pressure pipeline

Abstract

The utility model relates to the technical field of reinforced concrete pressure pipelines, in particular to a novel reinforced concrete pressure pipeline which comprises a pipeline body, the pipeline body comprises an inner layer, the inner layer is made of high-strength anti-seepage concrete, the thickness of the inner layer is 30-50 mm, a middle layer is a prestressed reinforcing mesh and is fixedly connected to the outer wall of the inner layer, and the middle layer is made of high-strength anti-seepage concrete. The prestressed reinforcing mesh is formed by welding a plurality of annular reinforcing steel bars and a plurality of longitudinal reinforcing steel bars, the comprehensive performance is remarkably improved through a layered composite structure, the inner layer high-strength impervious concrete and the middle prestressed reinforcing mesh cooperate to enhance the compression resistance and crack resistance, and high-pressure leakage is effectively prevented; outer-layer light anti-corrosion concrete reduces self weight and resists environmental erosion, and the service life is prolonged; the spigot end and the socket groove ensure long-term reliability of the joint; the continuous rectangular reinforcing ribs on the outer wall optimize load distribution, light weight and structural rigidity are considered, and the problems that a traditional pipeline is poor in impermeability, joints are prone to failure and corrosion, and the dead weight is too large are solved through the overall scheme.

Description

Technical Field

[0001] This utility model relates to the field of reinforced concrete pressure pipeline technology, and specifically discloses a novel reinforced concrete pressure pipeline. Background Technology

[0002] Reinforced concrete pressure pipelines are tubular structures widely used in water conservancy projects, urban water supply and drainage, and industrial water transmission systems. They withstand internal and external pressures through the combined action of an internal steel reinforcement skeleton and concrete. Traditional reinforced concrete pipelines typically employ a single-layer concrete structure reinforced with ordinary steel mesh, relying on the compressive strength of the concrete itself and the tensile strength of the steel bars to achieve overall load-bearing capacity. This approach offers advantages such as low cost and convenient construction. However, with the increasing complexity of operating conditions, such as high-pressure water transmission and corrosive environments, the traditional structure has gradually revealed the following shortcomings over long-term use:

[0003] Traditional pipe concrete layers have insufficient impermeability, making them prone to cracking and leakage under high pressure, and their overall compressive strength is low; socket joints rely on only a single rubber sealing ring, which is prone to displacement under high pressure, leading to seal failure; the inner and outer concrete walls are susceptible to corrosion, shortening their service life. Utility Model Content

[0004] This invention proposes a novel reinforced concrete pressure pipeline that significantly improves overall performance through a layered composite structure. The inner layer of high-strength impermeable concrete and the middle prestressed steel mesh work together to enhance compressive and crack resistance, effectively preventing high-pressure leakage.

[0005] This utility model is implemented as follows: a novel reinforced concrete pressure pipeline, comprising a pipeline body, wherein the pipeline body includes:

[0006] The inner layer is made of high-strength impermeable concrete and has a thickness of 30-50 mm.

[0007] The intermediate layer is a prestressed steel mesh and is fixedly connected to the outer wall of the inner layer. The prestressed steel mesh is composed of multiple ring steel bars and multiple longitudinal steel bars welded together.

[0008] The outer layer is made of corrosion-resistant lightweight concrete and is fixedly connected to the outer wall of the intermediate layer. The thickness of the outer layer is 40-60 mm.

[0009] As a preferred embodiment of this novel reinforced concrete pressure pipeline, the outer wall of the outer layer is fixedly connected with multiple evenly distributed reinforcing ribs.

[0010] As a preferred embodiment of the present invention, a novel reinforced concrete pressure pipeline is provided at one end of the pipeline body, the spigot end being an annular structure, and at the other end of the pipeline body being provided with a socket groove matching the spigot end, the socket groove being provided with a rubber sealing ring inside.

[0011] As a preferred embodiment of this novel reinforced concrete pressure pipeline, a clamp is provided on the outer wall of the pipeline body and on the side near the spigot end. The clamp is detachably connected to the pipeline body by fixing bolts.

[0012] As a preferred embodiment of this novel reinforced concrete pressure pipeline, the inner surface of the inner layer is coated with an epoxy resin coating with a thickness of 0.5 to 1 mm.

[0013] As a preferred embodiment of this novel reinforced concrete pressure pipeline, the cross-section of the reinforcing rib is rectangular, and the length of the reinforcing rib is the same as the overall length of the pipeline body.

[0014] As a preferred embodiment of this novel reinforced concrete pressure pipeline, the rubber sealing ring is made of EPDM rubber.

[0015] The beneficial effects of this utility model are:

[0016] This utility model significantly improves overall performance through a layered composite structure. The inner layer of high-strength impermeable concrete and the middle prestressed steel mesh work together to enhance compressive and crack resistance, effectively preventing high-pressure leakage. The outer layer of lightweight anti-corrosion concrete reduces its own weight and resists environmental erosion, extending its service life. The spigot end and socket groove ensure long-term reliability of the joint. The continuous rectangular reinforcing ribs on the outer wall optimize the load distribution, taking into account both lightweight and structural rigidity. The overall solution solves the problems of poor impermeability, easy joint failure, easy corrosion, and excessive weight of traditional pipelines, and is suitable for complex working conditions such as high-pressure water transportation and corrosive environments. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a cross-sectional view of the present invention.

[0019] Figure 2 This is a side view of the overall structure of this utility model;

[0020] Figure 3 This is a diagram of the overall external structure of this utility model.

[0021] The markings in the diagram are: 1. Inner layer; 2. Middle layer; 3. Ring reinforcement; 4. Longitudinal reinforcement; 5. Outer layer; 6. Reinforcing rib; 7. Spigot end; 8. Socket groove; 9. Rubber sealing ring; 10. Clamp; 11. Fixing bolt. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-3 A novel reinforced concrete pressure pipeline includes a pipeline body, which comprises:

[0024] Inner layer 1 is made of high-strength impermeable concrete and has a thickness of 30-50 mm.

[0025] Intermediate layer 2, which is a prestressed steel mesh and is fixedly connected to the outer wall of inner layer 1. The prestressed steel mesh is composed of multiple ring steel bars 3 and multiple longitudinal steel bars 4 welded together.

[0026] The outer layer 5 is made of corrosion-resistant lightweight concrete and is fixedly connected to the outer wall of the intermediate layer 2. The thickness of the outer layer 5 is 40-60mm.

[0027] In this embodiment: the inner layer 1 is made of high-strength impermeable concrete, which is mixed with silica fume and fiber, and has a thickness of 30-50mm. The dense structure improves the compressive strength and impermeability, and prevents cracking and leakage under high pressure. The middle layer 2 is made of ring steel bars 3 and longitudinal steel bars 4 welded into a prestressed steel mesh. After applying prestress, it is fixed to the outer wall of the inner layer 1 to enhance the overall tensile strength of the pipeline and offset the circumferential stress generated by the internal pressure. The outer layer 5 is made of anti-corrosion lightweight concrete (mixed with fly ash and organosilicon), with a thickness of 40-60mm, which reduces its own weight and resists the erosion of external corrosive media.

[0028] As a technical optimization of this utility model, the outer wall of the outer layer 5 is fixedly connected with a plurality of uniformly distributed reinforcing ribs 6.

[0029] In this embodiment: the reinforcing rib 6 has a rectangular cross-section with the same length as the main body of the pipe, and is fixed to the outer wall of the outer layer 5 to evenly distribute the external load and improve the bending stiffness.

[0030] As a technical optimization of this utility model, one end of the pipe body is provided with a spigot end 7, which is an annular structure, and the other end of the pipe body is provided with a socket groove 8 that matches the spigot end 7, and a rubber sealing ring 9 is provided inside the socket groove 8.

[0031] In this embodiment: after the insertion end 7 is inserted into the socket groove 8, the rubber sealing ring 9 expands under pressure to form the first sealing barrier, and the clamp 10 locks the joint through the fixing bolt 11 to provide the second mechanical fixation and prevent the joint from shifting.

[0032] As a technical optimization of this utility model, a clamp 10 is provided on the outer wall of the pipe body and on the side near the spigot end 7. The clamp 10 is detachably connected to the pipe body by fixing bolts 11.

[0033] In this embodiment, the clamp 10 is detachably connected to the pipe body by the fixing bolt 11, and the joint is locked by the fixing bolt 11 to provide a second mechanical fixation to prevent the joint from shifting.

[0034] As a technical optimization of this utility model, the inner surface of the inner layer 1 is coated with an epoxy resin coating with a thickness of 0.5 to 1 mm.

[0035] In this embodiment: the epoxy resin coating of the inner layer 1 fills the micropores on the concrete surface, blocks the water flow infiltration path, and reduces the risk of internal corrosion.

[0036] As a technical optimization of this utility model, the cross-section of the reinforcing rib 6 is rectangular, and the length of the reinforcing rib 6 is the same as the overall length of the pipe body.

[0037] In this embodiment, the rectangular reinforcing ribs 6 are continuously distributed along the entire length of the pipe to avoid stress concentration and ensure that the pipe body is subjected to uniform force.

[0038] As a technical optimization of this utility model, the rubber sealing ring 9 is made of EPDM rubber.

[0039] In this embodiment: the EPDM rubber sealing ring 9 is resistant to aging and high temperature, and can still maintain its elasticity after long-term pressure, thus extending the sealing life.

[0040] The working principle and usage process of this utility model are as follows: The high-strength impermeable concrete of the inner layer 1 directly bears the internal water pressure and inhibits crack propagation through the dense structure. The prestressed steel mesh of the middle layer 2 generates prestress after tensioning, which offsets the tensile stress caused by the internal pressure. The lightweight concrete of the outer layer 5 reduces its self-weight and resists external soil pressure. During installation, the spigot end 7 is inserted into the socket groove 8, and the rubber sealing ring 9 is compressed to fill the gap, forming an initial seal. Then, the clamp 10 is locked by the fixing bolt 11 to limit the joint displacement and ensure that the sealing surface is continuously pressed. The external soil pressure and vehicle load are transmitted to the reinforcing rib 6 through the outer layer 5. The rectangular cross-section ribs disperse the concentrated load into uniform stress and avoid local cracking. The epoxy resin coating of the inner layer 1 isolates water flow erosion.

[0041] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., 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.

[0042] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A novel reinforced concrete pressure pipeline, comprising a pipeline body, characterized in that: The pipeline body includes: Inner layer (1), the inner layer (1) is high-strength impermeable concrete, and the thickness of the inner layer (1) is 30~50mm; The intermediate layer (2) is a prestressed steel mesh and is fixedly connected to the outer wall of the inner layer (1). The prestressed steel mesh is composed of multiple ring steel bars (3) and multiple longitudinal steel bars (4) welded together. The outer layer (5) is made of corrosion-resistant lightweight concrete and is fixedly connected to the outer wall of the intermediate layer (2). The thickness of the outer layer (5) is 40~60mm.

2. The novel reinforced concrete pressure pipeline according to claim 1, characterized in that: The outer wall of the outer layer (5) is fixedly connected with a plurality of uniformly distributed reinforcing ribs (6).

3. The novel reinforced concrete pressure pipeline according to claim 1, characterized in that: One end of the pipe body is provided with a spigot end (7), which is an annular structure. The other end of the pipe body is provided with a socket groove (8) that matches the spigot end (7), and a rubber sealing ring (9) is provided inside the socket groove (8).

4. A novel reinforced concrete pressure pipeline according to claim 1, characterized in that: A clamp (10) is provided on the outer wall of the pipe body and on the side near the spigot end (7). The clamp (10) is detachably connected to the pipe body by a fixing bolt (11).

5. A novel reinforced concrete pressure pipeline according to claim 1, characterized in that: The inner surface of the inner layer (1) is coated with an epoxy resin coating with a thickness of 0.5~1mm.

6. A novel reinforced concrete pressure pipeline according to claim 2, characterized in that: The cross-section of the reinforcing rib (6) is rectangular, and the length of the reinforcing rib (6) is the same as the overall length of the pipe body.

7. A novel reinforced concrete pressure pipeline according to claim 3, characterized in that: The rubber sealing ring (9) is made of EPDM rubber.

Images