Composite water supply pipe

Abstract

The utility model relates to pipeline technical field, concretely is a kind of composite water supply pipe, including PCCP pipe body, still including inner lining plate, inner lining plate adopts PE board, inner lining plate is connected in PCCP pipe body inner wall by several composite nails, and composite nail includes nail body and first cladding, and the end of nail body is wrapped by first cladding, and first cladding and inner lining plate material are same and hot melt connection, and nail body is embedded in PCCP pipe body.The utility model connects inner lining plate on the concrete inner wall of PCCP pipe body, and inner lining plate adopts PE board, with corrosion resistance, non-toxic odorless, no pollution water quality, small friction, improve water delivery efficiency, not scale, prolong the service life of concrete function, PCCP pipe body in turn provides reliable strength for inner lining plate, so that it is not easy to damage, composite nail is easy to realize the composite of different materials, and the integrity of composite water supply pipe is good.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a composite water supply pipe. Background Technology

[0002] Prestressed concrete cylinder pipe (PCCP) is a water pipe made by winding circumferential prestressed steel wires around a high-strength concrete core with a steel cylinder, and then spraying a dense cement mortar protective layer on top. It is a composite pipe composed of thin steel plates, high-strength steel wires, and concrete, fully and comprehensively utilizing the tensile strength and sealing properties of steel and the compressive strength and corrosion resistance of concrete, resulting in high sealing performance, high strength, and high impermeability.

[0003] PCCP is a widely used type of pipeline, known for its large diameter, high pressure resistance, and low cost. Existing buried PCCPs consist of an inner concrete layer, a thin steel cylinder, an outer concrete layer, wound prestressed steel wire, and a mortar protective layer arranged from the inside out. Existing lined PCCPs also consist of a concrete layer, a thin steel cylinder, wound prestressed steel wire, and a mortar protective layer arranged from the inside out. It can be seen that the inner wall of existing PCCPs is made of concrete, and its corrosion resistance is generally poor, requiring improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a composite water supply pipe that addresses the problem that the inner wall of existing PCCPs is made of concrete, which has poor corrosion resistance and needs to be improved.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A composite water supply pipe includes a PCCP pipe body and an inner lining plate. The inner lining plate is made of PE board and is connected to the inner wall of the PCCP pipe body by a plurality of composite hooks. Each composite hook includes a hook body and a first covering layer. The first covering layer covers the end of the hook body and is made of the same material as the inner lining plate and is heat-fused together. The hook body is embedded in the PCCP pipe body.

[0006] The composite water supply pipe of this invention uses an inner lining plate connected to the concrete inner wall of the PCCP pipe body. The inner lining plate is made of PE board, which has the functions of corrosion resistance, non-toxicity and odorlessness, non-polluting water quality, low friction, improved water delivery efficiency, no scaling, and extended service life of concrete. The PCCP pipe body, in turn, provides reliable strength to the inner lining plate, making it less prone to damage. At the same time, the inner lining plate and the PCCP pipe body are connected by composite hooks. The hook body is similar to a shear nail and is encased and connected by the concrete of the PCCP pipe body. The first covering layer and the inner lining plate are fused together, making the connection between the inner lining plate and the PCCP pipe body stable. The composite hooks can easily achieve the combination of different materials, and the composite water supply pipe has good overall integrity.

[0007] As a preferred technical solution of this utility model, the PCCP tube body is an internally lined PCCP, which is provided with a concrete layer, a steel cylinder, a winding wire and a protective layer from the inside to the outside. The inner lining plate is connected to the inner wall of the concrete layer, the hanging nail body is embedded in the concrete layer, and the protective layer wraps the wire.

[0008] As a preferred technical solution of this utility model, the PCCP pipe body is an embedded PCCP, which is provided with an inner concrete layer, a steel cylinder, an outer concrete layer, a winding wire and a protective layer from the inside to the outside. The inner lining plate is connected to the inner wall of the inner concrete layer, the hanging nail body is embedded in the inner concrete layer, and the protective layer wraps the wire.

[0009] As a further preferred technical solution of this utility model, the wire is a composite steel wire, which includes a steel wire body and a second covering layer. The second covering layer wraps the steel wire body, and both the second covering layer and the protective layer are made of PE material and are heat-fused together.

[0010] As a further preferred technical solution of this utility model, the steel wire body is configured to cover the second coating layer in a straightened and prestressed state.

[0011] As a further preferred technical solution of this utility model, the wire material is basalt rebar or carbon fiber rebar.

[0012] As a further preferred technical solution of this utility model, the PCCP pipe body also includes an end plate, which is disposed at the end of the concrete layer and connects the inner lining plate and the protective layer.

[0013] As a further preferred technical solution of this utility model, the inner lining plate, the protective layer and the end plate are all made of PE material and are hot-melt connected.

[0014] As a preferred technical solution of this utility model, the longitudinal section of the hook body is T-shaped.

[0015] As a preferred technical solution of this utility model, adjacent PCCP pipe bodies are connected by a connector.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This utility model discloses a composite water supply pipe. An inner lining plate is connected to the concrete inner wall of the PCCP pipe body. The inner lining plate is made of PE board, which has the functions of corrosion resistance, non-toxicity, odorlessness, non-polluting water quality, low friction, improved water delivery efficiency, non-scaling, and extended service life of the concrete. The PCCP pipe body, in turn, provides reliable strength to the inner lining plate, making it less prone to damage. Simultaneously, the inner lining plate and the PCCP pipe body are connected by composite hooks. The hook body is similar to a shear stud, encased and connected by the concrete of the PCCP pipe body. The first covering layer and the inner lining plate are fused together, making the connection between the inner lining plate and the PCCP pipe body stable. The composite hooks can easily achieve the combination of different materials, resulting in a composite water supply pipe with good overall integrity. Attached Figure Description

[0017] Figure 1 This is a half-sectional schematic diagram of a composite water supply pipe; Figure 2 for Figure 1 Enlarged diagram of section A in the middle; Figure 3 This is a half-sectional schematic diagram of another type of composite water supply pipe; Figure 4 for Figure 3 Enlarged diagram of section B; Figure 5 This is a schematic diagram of the cross-section of the composite steel wire; Figure 6 This is a schematic diagram of the composite hook structure.

[0018] Marked in the image: 1-PCCP pipe body, 11-inner lining plate, 12-concrete layer, 13-steel cylinder, 14-protective layer, 15-end plate; 2-Composite steel wire, 21-Steel wire body, 22-Second coating layer; 3-Composite hook, 31-Hook body, 32-First covering layer. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0022] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0023] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0024] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0025] In related technologies, the inner walls of existing PCCPs are all made of concrete, which has generally poor corrosion resistance and needs to be improved. Therefore, the technical solution of this application was developed, and the following is a combination of... Figures 1 to 6 To elaborate.

[0026] Example 1 like Figures 1 to 6 As shown, the composite water supply pipe of this utility model includes a PCCP pipe body 1 and an inner lining plate 11.

[0027] The inner lining plate 11 is made of PE board, and the inner lining plate 11 is connected to the inner wall of the PCCP pipe body 1 by a number of composite hooks 3.

[0028] like Figure 1 and Figure 2 As shown, the PCCP tube body 1 is an inner-lined PCCP, which is provided with a concrete layer 12, a steel cylinder 13, a winding wire and a protective layer 14 from the inside to the outside. The inner lining plate 11 is connected to the inner wall of the concrete layer 12, the hanging nail body 31 is embedded in the concrete layer 12, and the protective layer 14 wraps the wire.

[0029] like Figure 3 and Figure 4 As shown, the PCCP pipe body 1 is an embedded PCCP, which is provided with an inner concrete layer 12, a steel cylinder 13, an outer concrete layer 12, a winding wire, and a protective layer 14 in sequence from the inside to the outside. The inner lining plate 11 is connected to the inner wall of the inner concrete layer 12, the hanging nail body 31 is embedded in the inner concrete layer 12, and the protective layer 14 wraps the wire.

[0030] In other words, the inner lining plate 11 is connected to the concrete layer 12 of the PCCP pipe body 1 by a number of composite hooks 3.

[0031] like Figure 6 As shown, the composite hook 3 includes a hook body 31 and a first covering layer 32, the first covering layer 32 covering the end of the hook body 31, as shown. Figure 2 or Figure 4As shown, the first covering layer 32 is made of the same material as the inner lining plate 11 and is heat-fused together. The hook body 31 is embedded in the PCCP pipe body 1. The hook body 31 is a metal nail, such as a steel nail. The longitudinal section of the hook body 31 is T-shaped.

[0032] In one alternative implementation, such as Figure 5 As shown, the wire is a composite steel wire 2, which includes a steel wire body 21 and a second covering layer 22. The second covering layer 22 wraps around the steel wire body 21, as shown. Figure 2 or Figure 4 As shown, both the second covering layer 22 and the protective layer 14 are made of PE material and are heat-fused together. The steel wire body 21 is configured to cover the second covering layer 22 while being straightened and prestressed.

[0033] In an optional embodiment, the wire is basalt rebar or carbon fiber rebar. When the basalt rebar or carbon fiber rebar is wound around the tube blank, it is taut to obtain a certain prestress. The basalt rebar or carbon fiber rebar has high strength and good corrosion resistance, and can replace the composite steel wire 2.

[0034] In some alternative implementations, such as Figures 1 to 4 As shown, the PCCP pipe body 1 also includes an end plate 15, which is located at the end of the concrete layer 12. The end plate 15 connects the inner lining plate 11 and the protective layer 14. The inner lining plate 11, the protective layer 14 and the end plate 15 are all made of PE material and are heat-fused together.

[0035] In some alternative implementations, adjacent PCCP tubes 1 are connected by a connector.

[0036] In this embodiment, the inner lining plate 11 is made of PE material, which has the advantages of being non-toxic and odorless, not polluting water quality, corrosion resistant, long service life, low frictional resistance, not easy to scale, and easy to connect. However, the production of large-diameter PE pipes is very difficult, the equipment is expensive and not easy to operate, the pipe yield is low, the pressure resistance is limited, the ring stiffness is low, and the cost is high. Therefore, this application uses PE as the inner lining plate 11 and the PCCP pipe body 1 as the skeleton to connect the inner lining plate 11 to the inner wall of the PCCP pipe body 1 to form a composite water supply pipe, which combines the advantages of PE pipe and PCCP pipe body 1. Furthermore, the composite hook 3 can effectively connect the inner lining plate 11 to the PCCP pipe body 1 as a whole. Specifically, the principle of the composite hook 3 is similar to that of dishwashing liquid. Dishwashing liquid has both hydrophilic and oleophilic groups, which can combine oil and water. The composite hook 3 has both the hook body 31 and the first covering layer 32. The hook body 31 is easy to connect with concrete, and the first covering layer 32 is easy to weld with the inner lining plate 11. Therefore, the composite hook 3 can connect the inner lining plate 11 and the PCCP pipe body 1 as a whole.

[0037] In this embodiment, based on the PCCP pipe body 1 as the skeleton, the diameter of the composite water supply pipe can be made up to 4000mm, that is, large-diameter pipes can be manufactured. The pipe diameter specifications that can be achieved include 1000mm, 1200mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2200mm, 2400mm, 2600mm, 2800mm, 3000mm, 3200mm, 3400mm, 3600mm, 3800mm, and 4000mm. It has high pressure resistance, reaching 2.0MPa; high ring stiffness, reaching SN16 or above; it can replace PCCP and large-diameter PE pipes as long-distance water transmission trunk lines, and can also be used as urban water supply trunk lines.

[0038] This embodiment describes a composite water supply pipe. An inner lining plate 11 is connected to the concrete inner wall of the PCCP pipe body 1. The inner lining plate 11 is made of PE board, which has the functions of corrosion resistance, non-toxicity, odorlessness, non-polluting water quality, low friction, improved water delivery efficiency, no scaling, and extended service life of the concrete. The PCCP pipe body 1, in turn, provides reliable strength to the inner lining plate 11, making it less prone to damage. Simultaneously, the inner lining plate 11 and the PCCP pipe body 1 are connected by composite hooks 3. The hook body 31 is similar to a shear stud, encased and connected by the concrete of the PCCP pipe body 1. The first covering layer 32 is fused to the inner lining plate 11, making the connection between the inner lining plate 11 and the PCCP pipe body 1 stable. The composite hooks 3 easily achieve the composite of different materials, resulting in a composite water supply pipe with good overall integrity.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite water supply pipe, comprising a PCCP pipe body (1), characterized in that, It also includes an inner lining plate (11), which is made of PE board. The inner lining plate (11) is connected to the inner wall of the PCCP pipe body (1) by a number of composite hooks (3). The composite hooks (3) include a hook body (31) and a first covering layer (32). The first covering layer (32) wraps the end of the hook body (31). The first covering layer (32) is made of the same material as the inner lining plate (11) and is heat-fused together. The hook body (31) is embedded in the PCCP pipe body (1).

2. The composite water supply pipe according to claim 1, characterized in that, The PCCP tube body (1) is an inner-lined PCCP, which is provided with a concrete layer (12), a steel cylinder (13), a winding wire and a protective layer (14) from the inside to the outside. The inner lining plate (11) is connected to the inner wall of the concrete layer (12), the hanging nail body (31) is embedded in the concrete layer (12), and the protective layer (14) wraps the wire.

3. The composite water supply pipe according to claim 1, characterized in that, The PCCP tube body (1) is an embedded PCCP, which is provided with an inner concrete layer (12), a steel cylinder (13), an outer concrete layer (12), a winding wire and a protective layer (14) from the inside to the outside. The inner lining plate (11) is connected to the inner wall of the inner concrete layer (12), the hanging nail body (31) is embedded in the inner concrete layer (12), and the protective layer (14) wraps the winding wire.

4. The composite water supply pipe according to claim 2 or 3, characterized in that, The wire is a composite steel wire (2), which includes a steel wire body (21) and a second covering layer (22). The second covering layer (22) wraps the steel wire body (21). The second covering layer (22) and the protective layer (14) are both made of PE material and are heat-fused together.

5. The composite water supply pipe according to claim 4, characterized in that, The steel wire body (21) is configured to cover the second covering layer (22) in a straightened and prestressed state.

6. The composite water supply pipe according to claim 2 or 3, characterized in that, The wire material is either basalt fiber or carbon fiber fiber.

7. The composite water supply pipe according to claim 2 or 3, characterized in that, The PCCP pipe body (1) also includes an end plate (15), which is located at the end of the concrete layer (12) and connects the inner lining plate (11) and the protective layer (14).

8. The composite water supply pipe according to claim 7, characterized in that, The inner lining plate (11), the protective layer (14) and the end plate (15) are all made of PE material and are heat-fused together.

9. The composite water supply pipe according to claim 1, characterized in that, The longitudinal section of the hook body (31) is T-shaped.

10. The composite water supply pipe according to claim 1, characterized in that, The adjacent PCCP pipe bodies (1) are connected by a connector.

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