CN220816833U - Weather-resistant steel prestressed steel cylinder concrete pipe - Google Patents
Weather-resistant steel prestressed steel cylinder concrete pipe Download PDFInfo
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- CN220816833U CN220816833U CN202322253518.3U CN202322253518U CN220816833U CN 220816833 U CN220816833 U CN 220816833U CN 202322253518 U CN202322253518 U CN 202322253518U CN 220816833 U CN220816833 U CN 220816833U
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Abstract
The application relates to an improved prestressed steel cylinder concrete pipe, in particular to a weather-resistant steel prestressed steel cylinder concrete pipe; the concrete comprises a concrete layer, a steel cylinder, a mortar protection layer and weather-resistant steel wires; concrete layers are paved on the inner ring and the outer ring of the steel cylinder; the outer wall of the outer concrete layer is wound with a first layer of weather-resistant steel wire, and a first layer of mortar protection layer which covers the first layer of weather-resistant steel wire is arranged on the outer side of the steel cylinder. According to the application, under the condition of not changing the basic structure of the pipe, the double-layer wound pipe structure is designed, and the two layers are wound by adopting weather-resistant steel wires; the anti-corrosion mortar is used in the specification range of low working pressure and low earthing, meets the use requirement in a certain range, can also strengthen the self anti-corrosion performance of the pipes, greatly prolongs the service life of the pipes, and can keep the use function unchanged through the self anti-corrosion performance of the weathering steel even if a mortar protection layer is in a problem, and the service life is not greatly influenced.
Description
Technical Field
The application relates to an improved prestressed steel cylinder concrete pipe, in particular to a weather-resistant steel prestressed steel cylinder concrete pipe.
Background
The prestressed steel cylinder concrete pipe (PRESTRESSED CONCRETE CYLINDER PIPE, PCCP for short) is a new pipeline material introduced and developed from abroad in the last century in China, and is a water pipe made up by winding circumferential prestressed steel wire around high-strength concrete pipe core with steel cylinder and spraying compact cement mortar protecting layer on it.
The composite pipe with high strength, high impermeability and high sealing performance is produced with thin steel plate, medium steel plate, deformed steel, high strength pre-stressed steel wire, high strength concrete, high strength mortar, rubber sealing ring and other material.
At present, the protection of the prestress steel wire layer of the prestress steel cylinder concrete pipe mainly adopts the protection of a mortar layer, or the mortar protection layer and the external anticorrosive coating are combined for protection, the steel wire has no protection effect, and after the mortar protection layer and the external anticorrosive coating are damaged, the steel wire loses protection, so that a certain quality hidden trouble exists in the pipe, and the pipe is seriously damaged. At present, the problems are frequently encountered in the production of the domestic prestressed steel cylinder concrete pipes.
Disclosure of Invention
The application aims to provide a weather-resistant steel prestressed steel cylinder concrete pipe for solving the problems.
The application is realized in the following way: the weather-resistant steel prestressed steel cylinder concrete pipe comprises a concrete layer, a steel cylinder, a mortar protection layer and weather-resistant steel wires; concrete layers are paved on the inner ring and the outer ring of the steel cylinder; the outer wall of the outer concrete layer is wound with a first layer of weather-resistant steel wire, and a first mortar protective layer which covers the first layer of weather-resistant steel wire is arranged on the outer side of the steel cylinder; the outer wall of the first mortar protection layer is wound with a second layer of weather-resistant steel wire, and the outer side of the first mortar protection layer is provided with a second mortar protection layer which covers the second layer of weather-resistant steel wire.
Further, the spiral directions of the two layers of weather-resistant steel wires are the same.
Further, one end of the first layer of weather-resistant steel wire is aligned with one end of the second layer of weather-resistant steel wire and is positioned in the radial coverage range of the bellmouth steel ring at one end of the steel cylinder; the other end of the first layer of weather-resistant steel wire is aligned with the other end of the second layer of weather-resistant steel wire and is positioned in the radial coverage range of the socket steel ring at the other end of the steel cylinder.
Further, the thickness of the second mortar protection layer is larger than that of the first mortar protection layer.
By implementing the technical scheme, the application designs the double-layer wound pipe structure without changing the basic structure of the pipe and without changing the main production process, and the two layers are wound by adopting weather-resistant steel wires; the anti-corrosion mortar is used in the specification range of low working pressure and low earthing, meets the use requirement in a certain range, can also strengthen the self anti-corrosion performance of the pipes, greatly prolongs the service life of the pipes, and can keep the use function unchanged through the self anti-corrosion performance of the weathering steel even if a mortar protection layer is in a problem, and the service life is not greatly influenced.
Drawings
The specific structure of the present application is shown in the following drawings and examples:
FIG. 1 is a schematic diagram of an embodiment of the present application.
Legend: 1. concrete layer, steel cylinder, weather-proof steel wire and mortar protecting layer.
Description of the embodiments
The present application is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present application.
The embodiment is shown in fig. 1, wherein the weather-resistant steel prestressed steel cylinder concrete pipe comprises a concrete layer 1, a steel cylinder 2, a mortar protection layer 4 and weather-resistant steel wires 3; concrete layers 1 are paved on the inner ring and the outer ring of the steel cylinder 2; the outer wall of the outer concrete layer 1 is wound with a first layer of weather-resistant steel wire 3, and a first mortar protection layer 4 which covers the first layer of weather-resistant steel wire 3 is arranged outside the steel cylinder 2; the outer wall of the first mortar protection layer 4 is wound with a second layer of weather-resistant steel wires 3, and the outer side of the first mortar protection layer 4 is provided with a second mortar protection layer 4 which covers the second layer of weather-resistant steel wires 3.
The weathering steel wire 3 is designed to be the maximum value allowed by the specification at the winding pitch; the main manufacturing method of the application is as follows:
When the steel cylinder 2 and the concrete layer 1 have conditions, a first layer of weather-resistant steel wire 3 is wound, and then mortar is sprayed to form a first layer of mortar protection layer 4; when the first mortar protection layer 4 has the condition, starting winding the second weather-resistant steel wire 3; and then spraying mortar to form a second mortar protective layer 4. At this time, even if the outside is not provided with an anti-corrosion coating, the durability, the corrosion resistance and the adaptability to various environmental conditions of the present application are greatly improved.
When in manufacture, the number of layers of the weathering steel wire 3 can be configured according to the requirements of different working pressure soil covering.
The application adopts a multi-layer structure, the two-layer weather-resistant steel wire 3 fully plays excellent corrosion resistance and weather resistance except for bearing the load, and even if the external mortar protective layer 4 or other protective layers have local damage, cracking or other unstructured integral damages, the second-layer weather-resistant steel wire 3 still has excellent independent corrosion resistance, thereby greatly improving the durability of the pipe and the adaptability to various environmental conditions, and simultaneously, the number of the used weather-resistant steel materials can be fully reduced due to the adoption of the arrangement of the maximum pitch, thereby fully utilizing the advantages of the weather-resistant steel wire and optimizing the cost.
The application is suitable for being used in the specification range of low working pressure and low earth covering of PCCP pipes, fully exerts the self-carried corrosion resistance of the weathering steel, not only meets the use in a certain range, but also can greatly improve the service life of the pipes by strengthening the self-corrosion resistance of the pipes, and even if the problems occur in the mortar protection layer 4, the service function can still be kept not reduced by the self-corrosion resistance of the weathering steel, and the service life is not greatly influenced.
As shown in fig. 1, the spiral direction of the two layers of weathering steel wire 3 is the same. And the load bearing force is enhanced.
As shown in fig. 1, the thickness of the second mortar protection layer 4 is greater than the thickness of the first mortar protection layer 4.
As shown in fig. 1, one end of the first layer of weathering steel wire 3 is aligned with one end of the second layer of weathering steel wire 3 and is positioned in the radial coverage of the bellmouth steel ring at one end of the steel cylinder 2; the other end of the first layer of weathering steel wire 3 is aligned with the other end of the second layer of weathering steel wire 3 and is positioned in the radial coverage of the socket steel ring at the other end of the steel cylinder 2. Thus, the bearing load force of the cylinder body can be furthest improved.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.
The technical characteristics form the optimal embodiment of the application, have stronger adaptability and optimal implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the needs of different situations.
Claims (5)
1. A weather-resistant steel prestressed steel cylinder concrete pipe is characterized in that: comprises a concrete layer, a steel cylinder, a mortar protection layer and weather-resistant steel wires; concrete layers are paved on the inner ring and the outer ring of the steel cylinder; the outer wall of the outer concrete layer is wound with a first layer of weather-resistant steel wire, and a first mortar protective layer which covers the first layer of weather-resistant steel wire is arranged on the outer side of the steel cylinder; the outer wall of the first mortar protection layer is wound with a second layer of weather-resistant steel wire, and the outer side of the first mortar protection layer is provided with a second mortar protection layer which covers the second layer of weather-resistant steel wire.
2. The weathering steel prestressed steel cylinder concrete pipe of claim 1, wherein: the spiral directions of the two layers of weather-resistant steel wires are the same.
3. The weathering steel prestressed steel cylinder concrete pipe of claim 1 or 2, wherein: one end of the first layer of weather-resistant steel wire is aligned with one end of the second layer of weather-resistant steel wire and is positioned in the radial coverage range of the bellmouth steel ring at one end of the steel cylinder; the other end of the first layer of weather-resistant steel wire is aligned with the other end of the second layer of weather-resistant steel wire and is positioned in the radial coverage range of the socket steel ring at the other end of the steel cylinder.
4. The weathering steel prestressed steel cylinder concrete pipe of claim 1 or 2, wherein: the thickness of the second mortar protection layer is larger than that of the first mortar protection layer.
5. A weathering steel prestressed steel cylinder concrete pipe of claim 3, wherein: the thickness of the second mortar protection layer is larger than that of the first mortar protection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253518.3U CN220816833U (en) | 2023-08-22 | 2023-08-22 | Weather-resistant steel prestressed steel cylinder concrete pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253518.3U CN220816833U (en) | 2023-08-22 | 2023-08-22 | Weather-resistant steel prestressed steel cylinder concrete pipe |
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| Publication Number | Publication Date |
|---|---|
| CN220816833U true CN220816833U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322253518.3U Active CN220816833U (en) | 2023-08-22 | 2023-08-22 | Weather-resistant steel prestressed steel cylinder concrete pipe |
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| CN (1) | CN220816833U (en) |
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2023
- 2023-08-22 CN CN202322253518.3U patent/CN220816833U/en active Active
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