Cement-lined stainless steel direct drinking water pipe
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI BAOMU PIPE FITTINGS CO LTD
- Filing Date
- 2026-05-08
- Publication Date
- 2026-08-07
AI Technical Summary
[0004]本发明的目的在于提供一种水泥内覆不锈钢直饮水管，用于解决上述水泥内覆不锈钢直饮水管多采用简单包裹或非机械互锁的方式结合内外层，导致不同材料层之间易产生相对滑移的问题
Smart Images
Figure CN122523501A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of composite water pipe technology, specifically to a cement-lined stainless steel direct drinking water pipe. Background Technology
[0002] Cement-lined stainless steel direct drinking water pipe is a special pipe designed with a composite structure for transporting direct drinking water. It combines food-grade stainless steel lining, active load-bearing prestressed steel frame and high-strength concrete protective shell to form the core unit for long-term direct drinking water delivery.
[0003] Existing cement-lined stainless steel drinking water pipes mostly use simple wrapping or non-mechanical interlocking methods to combine the inner and outer layers. When subjected to alternating internal pressure, external soil pressure and temperature stress over a long period of time, relative slippage can easily occur between different material layers, leading to stress concentration and interface peeling. Ultimately, this causes the inner lining to fail or the outer layer to crack, significantly reducing the overall pressure-bearing capacity and lifespan of the pipe. Therefore, a cement-lined stainless steel drinking water pipe is proposed to address the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide a cement-lined stainless steel drinking water pipe, which solves the problem that the above-mentioned cement-lined stainless steel drinking water pipes often use simple wrapping or non-mechanical interlocking methods to combine the inner and outer layers, resulting in relative slippage between different material layers.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A cement-lined stainless steel direct drinking water pipe includes a stainless steel inner cylinder, a pressure-resistant protective structure, a combined disc structure, a sealing ring, a concrete mortar layer, and an asphalt anti-corrosion layer. The pressure-resistant protective structure and the combined disc structure are provided on the outer side of the stainless steel inner cylinder. A sealing ring is provided on the left side of the stainless steel inner cylinder. A concrete mortar layer is provided on the outer side of the pressure-resistant protective structure. An asphalt anti-corrosion layer is provided on the outer side of the concrete mortar layer.
[0006] Preferably, the stainless steel inner cylinder includes a cylinder body, an arc groove, a groove, a connecting cylinder structure, and a connecting ring edge structure. The outer left side of the cylinder body has symmetrically distributed arc grooves, the outer middle part of the cylinder body has symmetrically distributed grooves, the right end of the cylinder body is fixedly connected to the connecting cylinder structure, the left end of the cylinder body is fixedly connected to the connecting ring edge structure, and a sealing ring is fitted on the outer side of the connecting ring edge structure.
[0007] Preferably, the outer side of the cylinder is provided with a pressure-resistant protective structure, which includes a first arc plate, a connecting block structure, a second arc plate, and prestressed steel wires. The inner wall of the first arc plate is fixedly connected with symmetrically distributed connecting block structures. The second arc plate is placed on the outer side of the first arc plate. The space between the guide grooves opened inside the first arc plate and the guide grooves opened inside the second arc plate is filled with prestressed steel wires.
[0008] Preferably, a combined disk structure is provided on the left side of the first arc plate. The combined disk structure includes a semi-circular disk, a connecting arc strip structure, and a connecting ear plate structure. The connecting arc strip structure is fixedly connected to the inner wall of the semi-circular disk, and the connecting ear plate structures are fixedly connected to the outer sides of the front and rear ends of the semi-circular disk in a symmetrical distribution.
[0009] Preferably, the connecting arc strip structure is inserted into the arc groove opened on the outside of the cylinder, and the two sets of combined disk structures arranged above and below are detachably connected.
[0010] Preferably, the connecting block structure is inserted into the groove on the outside of the cylinder, the left end of the first arc plate is detachably connected to the inside of the semi-annular disk, and the left end of the second arc plate is detachably connected to the inside of the semi-annular disk.
[0011] Preferably, a concrete mortar layer is provided in the area between the outer side of the pressure-resistant protective structure, the right end of the semi-annular disc, and the left end of the connecting cylinder structure, and an asphalt anti-corrosion layer is provided on the outer side of the concrete mortar layer.
[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a stainless steel inner cylinder is set up, which serves as the inner core of the water conveying channel. The cylinder body is precisely machined with arc grooves and grooves, and a connecting cylinder structure and a connecting ring edge structure are fixed at both ends respectively. The arc grooves and grooves provide precise installation positioning points for the subsequent combined plate structure and pressure-resistant protection structure, realizing modular assembly and avoiding the damage to material properties caused by on-site welding. The connecting ring edge structure provides a stable installation base for the sealing ring, ensuring the tightness of the pipe interface. 2. In this invention, the pressure-resistant protection structure consists of a first arc plate, a second arc plate, and prestressed steel wires filling the space between them, forming a cage-like skeleton. The cage is inserted into the groove of the inner cylinder through a connecting block structure. The prestressed steel wires are pre-stressed during manufacturing, so that they can actively counteract the tensile stress generated by the internal water pressure and external soil pressure during pipeline service, greatly improving the crack resistance and deformation resistance of the pipe body. The mesh skeleton formed by the arc plate and the steel wires can evenly distribute the stress to the entire concrete layer, avoiding stress concentration. Through the mechanical interlocking of the connecting block and the inner cylinder, the steel skeleton and the inner cylinder are combined into a whole, preventing interlayer slippage, which can greatly improve the overall pressure bearing capacity and service life of the pipeline. 3. In this invention, the combined disc structure consists of two semi-ring discs that are bolted to the outer connecting ear plate structure to form a complete ring. The inner connecting arc strip structure is inserted into the arc groove of the inner cylinder, which realizes the rapid and standardized assembly of the pipe end, which is convenient for on-site construction. It firmly locks the end of the pressure-resistant protective structure and serves as the end mold for the concrete layer pouring. It is a key transition and load-bearing component between the inner lining structure and the outer concrete. Moreover, the design of the upper and lower semi-rings facilitates installation and disassembly in narrow spaces or during maintenance. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the disassembled structure of the pressure-resistant protective structure and the combined disk structure of the present invention; Figure 3 This is a schematic diagram of the internal component structure of the stainless steel inner cylinder of the present invention; Figure 4 This is a schematic diagram of the internal component structure of the pressure-resistant protective structure of the present invention; Figure 5 This is a schematic diagram of the internal component structure of the combined disk structure of the present invention; Figure 6 This is a schematic diagram of the installation cross-sectional structure of the combined disc structure and the sealing ring of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the structure at point A; Figure 8 For the present invention Figure 6 A schematic diagram of the structure at point B; Figure 9 For the present invention Figure 6 A schematic diagram of the structure at point C.
[0014] In the diagram: 1. Stainless steel inner cylinder; 11. Cylinder body; 12. Arc groove; 13. Groove; 14. Connecting cylinder structure; 15. Connecting ring edge structure; 2. Pressure-resistant protective structure; 21. First arc plate; 22. Connecting block structure; 23. Second arc plate; 24. Prestressed steel wire; 3. Combined disc structure; 31. Semi-ring disc; 32. Connecting arc strip structure; 33. Connecting ear plate structure; 4. Sealing ring; 5. Concrete mortar layer; 6. Asphalt anti-corrosion layer. Detailed Implementation
[0015] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.
[0016] In the embodiments of the invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the position or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Similarly, words such as "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.
[0017] Furthermore, in the embodiments of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 the invention based on the specific circumstances.
[0018] Please see Figure 1-9 The present invention provides a technical solution: A cement-lined stainless steel drinking water pipe includes a stainless steel inner cylinder 1, a pressure-resistant protective structure 2, a combined disc structure 3, a sealing ring 4, a concrete mortar layer 5, and an asphalt anti-corrosion layer 6. The pressure-resistant protective structure 2 and the combined disc structure 3 are provided on the outside of the stainless steel inner cylinder 1. The sealing ring 4 is provided on the left side of the stainless steel inner cylinder 1. The concrete mortar layer 5 is provided on the outside of the pressure-resistant protective structure 2. The asphalt anti-corrosion layer 6 is provided on the outside of the concrete mortar layer 5.
[0019] The stainless steel inner cylinder 1 includes a cylinder body 11, an arc groove 12, a groove 13, a connecting cylinder structure 14, and a connecting ring edge structure 15. The cylinder body 11 has symmetrically distributed arc grooves 12 on its left outer side and symmetrically distributed grooves 13 on its middle outer side. The connecting cylinder structure 14 is fixedly connected to the right end of the cylinder body 11, and the connecting ring edge structure 15 is fixedly connected to the left end of the cylinder body 11. A sealing ring 4 is fitted onto the outside of the connecting ring edge structure 15. Through the above configuration, an integrally manufactured stainless steel inner cylinder 1 is formed. A pressure-resistant protective structure 2 is provided on the outside of the cylinder body 11. The pressure-resistant protective structure 2 includes a first arc plate 21, a connecting block structure 22, a second arc plate 23, and... Prestressed steel wire 24; symmetrically distributed connecting block structures 22 are fixedly connected to the inner wall of the first arc plate 21; a second arc plate 23 is placed on the outer side of the first arc plate 21; prestressed steel wire 24 is filled between the guide grooves inside the first arc plate 21 and the guide grooves inside the second arc plate 23. Through the above arrangement, a modularly assembled compressive protective structure 2 is formed. A combined disc structure 3 is provided on the left side of the first arc plate 21. The combined disc structure 3 includes a semi-annular disc 31, a connecting arc strip structure 32, and a connecting ear plate structure 33. The connecting arc strip structure 32 is fixedly connected to the inner wall of the semi-annular disc 31, and symmetrically distributed connecting ear plate structures 3 are fixedly connected to the outer sides of both ends of the semi-annular disc 31. 3. Through the above configuration, a modular assembly of the combined disc structure 3 is formed. The connecting arc structure 32 is inserted into the arc groove 12 opened on the outside of the cylinder 11. The two sets of combined disc structures 3 are detachably connected. Through the above configuration, the combined disc structure 3 and the stainless steel inner cylinder 1 are accurately and firmly connected. The connecting block structure 22 is inserted into the groove 13 opened on the outside of the cylinder 11. The left end of the first arc plate 21 is detachably connected to the inside of the semi-annular disc 31, and the left end of the second arc plate 23 is detachably connected to the inside of the semi-annular disc 31. Through the above configuration, this mechanical interlock firmly combines the outer pressure-resistant protective structure 2 and the inner stainless steel inner cylinder 1 into one. When subjected to internal pressure, external pressure, or bending loads, the two components can deform synchronously and share the load, preventing stress concentration or interface peeling caused by interlayer slippage. This greatly improves the overall rigidity and load-bearing efficiency of the pipe body. A concrete mortar layer 5 is provided in the area between the outer side of the pressure-resistant protective structure 2, the right end of the semi-annular disc 31, and the left end of the connecting cylinder structure 14. An asphalt anti-corrosion layer 6 is provided on the outer side of the concrete mortar layer 5. Through the above-mentioned design, the concrete provides strong resistance to compression, impact, and foundation settlement, bearing most of the external loads. Combined with the asphalt anti-corrosion layer 6, it provides long-term protection for the internal precision structure and can resist soil chemical corrosion and physical erosion.
[0020] Workflow: This invention provides a cement-lined stainless steel direct drinking water pipe. The stainless steel inner cylinder 1 serves as the inner core of the water delivery channel. Its cylinder body 11 is precision-machined with arc grooves 12 and grooves 13. Connecting cylinder structures 14 and connecting ring edge structures 15 are fixed at both ends. Made of food-grade stainless steel, the inner wall is smoothed to fundamentally prevent rust and microbial growth, ensuring the hygiene and safety of the direct drinking water. First, the stainless steel inner cylinder 1 is assembled with the combined disc structure 3. The connecting arc strip structure 32 on the inner wall of the semi-ring disc 31 is inserted into the arc groove 12 on the outer side of the cylinder body 11. This allows the combined disc structure 3 to consist of two semi-ring discs 31 connected to the outer connecting ear plate structure 33 via bolts, forming a complete ring. This achieves rapid and standardized assembly of the pipe ends, facilitating... During on-site construction, the connecting block structure 22 is inserted into the groove 13 on the outside of the cylinder 11. The left end of the first arc plate 21 is bolted to the inside of the semi-annular disc 31 for fixing and limiting the first arc plate 21. A second arc plate 23 is placed on the outside of the first arc plate 21. During installation, prestressed steel wires 24 are filled between the guide grooves opened inside the first arc plate 21 and the guide grooves opened inside the second arc plate 23. The left end of the second arc plate 23 is bolted to the inside of the semi-annular disc 31. A concrete mortar layer 5 is provided in the area between the outside of the pressure-resistant protective structure 2, the right end of the semi-annular disc 31, and the left end of the connecting cylinder structure 14. An asphalt anti-corrosion layer 6 is provided on the outside of the concrete mortar layer 5, forming an integral cement-lined stainless steel direct drinking water pipe. Figures 6-9 As shown, when assembling adjacent cement-lined stainless steel drinking water pipes, the connecting cylinder structure 14 in the left cement-lined stainless steel drinking water pipe and the semi-ring disc 31 in the right cement-lined stainless steel drinking water pipe are combined and installed to limit the connection. The sealing ring 4 is used to seal and prevent leakage of the adjacent cement-lined stainless steel drinking water pipes, which facilitates installation on the construction site.
[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cement-lined stainless steel direct drinking water pipe, comprising a stainless steel inner cylinder (1), a pressure-resistant protective structure (2), a combined disc structure (3), a sealing ring (4), a concrete mortar layer (5), and an asphalt anti-corrosion layer (6), characterized in that: The stainless steel inner cylinder (1) is provided with a pressure-resistant protective structure (2) and a combined disc structure (3) on the outside. A sealing ring (4) is provided on the left side of the stainless steel inner cylinder (1). A concrete mortar layer (5) is provided on the outside of the pressure-resistant protective structure (2). An asphalt anti-corrosion layer (6) is provided on the outside of the concrete mortar layer (5).
2. The cement-lined stainless steel direct drinking water pipe according to claim 1, characterized in that: The stainless steel inner cylinder (1) includes a cylinder body (11), an arc groove (12), a groove (13), a connecting cylinder structure (14), and a connecting ring edge structure (15). The cylinder body (11) has symmetrically distributed arc grooves (12) on the outer left side, and symmetrically distributed grooves (13) on the outer middle side of the cylinder body (11). The connecting cylinder structure (14) is fixedly connected to the right end of the cylinder body (11), and the connecting ring edge structure (15) is fixedly connected to the left end of the cylinder body (11). A sealing ring (4) is fitted on the outer side of the connecting ring edge structure (15).
3. The cement-lined stainless steel direct drinking water pipe according to claim 2, characterized in that: The outer side of the cylinder (11) is provided with a pressure-resistant protective structure (2). The pressure-resistant protective structure (2) includes a first arc plate (21), a connecting block structure (22), a second arc plate (23), and a prestressed steel wire (24). The inner wall of the first arc plate (21) is fixedly connected with a symmetrically distributed connecting block structure (22). The second arc plate (23) is placed on the outer side of the first arc plate (21). The space between the guide groove opened inside the first arc plate (21) and the guide groove opened inside the second arc plate (23) is filled with a prestressed steel wire (24).
4. The cement-lined stainless steel direct drinking water pipe according to claim 3, characterized in that: The first arc plate (21) is provided with a combination plate structure (3) on the left side. The combination plate structure (3) includes a semi-ring plate (31), a connecting arc strip structure (32) and a connecting ear plate structure (33). The inner wall of the semi-ring plate (31) is fixedly connected with the connecting arc strip structure (32), and the outer sides of the front and rear ends of the semi-ring plate (31) are fixedly connected with symmetrically distributed connecting ear plate structures (33).
5. The cement-lined stainless steel direct drinking water pipe according to claim 4, characterized in that: The connecting arc structure (32) is inserted into the arc groove (12) on the outside of the cylinder (11), and the two sets of the combined disk structure (3) set above and below are detachably connected.
6. The cement-lined stainless steel direct drinking water pipe according to claim 4, characterized in that: The connecting block structure (22) is inserted into the groove (13) on the outside of the cylinder (11). The left end of the first arc plate (21) is detachably connected to the inside of the semi-annular disk (31), and the left end of the second arc plate (23) is detachably connected to the inside of the semi-annular disk (31).
7. A cement-lined stainless steel direct drinking water pipe according to claim 4, characterized in that: A concrete mortar layer (5) is provided in the area between the outer side of the pressure-resistant protective structure (2), the right end of the semi-annular disc (31), and the left end of the connecting cylinder structure (14). An asphalt anti-corrosion layer (6) is provided on the outer side of the concrete mortar layer (5).