Non-prestressed inner steel cylinder concrete water supply pipe

Abstract

The utility model discloses a non-prestressed concrete water supply pipe with an inner steel cylinder, belongs to the field of pipelines, and particularly relates to a water supply pipeline which comprises a high-strength reinforcing mesh, concrete, an A-type rubber ring, a bellmouth, a ring rib, a pressure test opening, an insertion opening, the inner steel cylinder, an inner anti-corrosion layer, a flange, an M36 bolt and a reinforcing rib. By means of the design, the water supply pipeline is high in strength and permeability resistance, the overall durability of the pipeline is improved, the material cost is saved, and the water supply pipeline is suitable for being installed underwater and under other special environment operation and is wider in application range.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of pipeline, in particular to a water supply pipeline. BACKGROUND

[0002] With the rapid development of China's economy, the demand for water supply pipeline is increasing. The traditional spiral welded pipe and other water supply pipelines have problems such as large amount of steel, high construction cost, etc., which cannot meet the high requirements of modern industry on water supply pipeline. Therefore, it is of great practical significance to study a water supply pipeline with low steel consumption, improved overall durability of the pipeline, saved material cost and convenient installation under underwater and other special environments.

[0003] Therefore, there is an urgent need in the prior art to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to provide an equipment and system for the problems in the background art.

[0005] A non-prestressed inner steel cylinder concrete water supply pipeline, characterized in that it comprises: high-strength steel mesh, concrete, A-shaped rubber ring, socket, pressure test port, spigot, inner steel cylinder and inner anticorrosive layer.

[0006] The inner steel cylinder is a spiral welded or straight welded high-strength steel pipe with an inner anticorrosive layer on the inner wall, one end of the inner steel cylinder is integrally formed with a socket, and the other end of the inner steel cylinder is welded with a spigot; two A-shaped rubber rings are regularly arranged on the spigot, and a pressure test port is also regularly arranged on the spigot.

[0007] The outer wall of the inner steel cylinder is provided with a concrete layer, and the concrete layer is provided with a high-strength steel mesh.

[0008] The two ends of the inner steel cylinder are provided with flanges, the flanges are regularly provided with reinforcing ribs, and the reinforcing ribs are connected with the outer wall of the inner steel cylinder.

[0009] The flanges of adjacent non-prestressed inner steel cylinder concrete water supply pipelines are connected by M36 bolts.

[0010] The inner anticorrosive layer is one of an epoxy resin paint, an epoxy ceramic paint, an IPN8710 anticorrosive paint and a cement mortar coating.

[0011] The number of high-strength steel meshes is more than one, the high-strength steel mesh is a cylindrical steel mesh, and the high-strength steel mesh is arranged with the same center as the inner steel cylinder.

[0012] The outer wall of the inner steel cylinder is welded with a ring rib, and the number of ring ribs is more than one, the ring ribs are uniformly arranged on the outer wall of the inner steel cylinder.

[0013] The spigot and the socket of the non-prestressed inner steel cylinder concrete are inserted into each other, and the two A-shaped rubber rings are in close contact with the spigot and the socket.

[0014] The inner steel cylinder is a corrugated reinforced spiral welded or straight welded high-strength steel pipe.

[0015] Through the above design scheme, a water supply pipeline with high strength, high impermeability, improved overall durability of the pipeline, and saved material cost is provided, and the application is suitable for installation under water and other special environment operations, and the application range is wider. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural diagram of a non-prestressed inner steel cylinder concrete water supply pipe Figure One

[0017] Figure 2 It is a structural diagram of a non-prestressed inner steel cylinder concrete water supply pipe Figure Two

[0018] Figure 3 It is a schematic diagram of adjacent assembly connection of the application;

[0019] 1-high strength steel mesh, 2-concrete, 3-A-shaped rubber ring, 4-spigot, 5-ring reinforcement, 6-pressure test port, 7-socket, 8-inner steel cylinder, 9-inner anticorrosive layer, 21-flange, 31-M36 bolt, 91-stiffening rib. DETAILED DESCRIPTION

[0020] The application is further described in conjunction with the drawings:

[0021] A non-prestressed inner steel cylinder concrete water supply pipe, characterized in that it comprises: a high-strength steel mesh 1, a concrete layer 2, an A-shaped rubber ring 3, a spigot 4, a pressure test port 6, a socket 7, an inner steel cylinder 8, and an inner anticorrosive layer 9.

[0022] The inner steel cylinder 8 is a spiral welded or straight welded high-strength steel pipe with an inner anticorrosive layer 9 on the inner wall, one end of the inner steel cylinder 8 is integrally formed with a spigot 4, and the other end of the inner steel cylinder 8 is welded with a socket 7; two A-shaped rubber rings 3 are regularly arranged on the socket 7, and a pressure test port 6 is also regularly arranged on the socket 7.

[0023] The outer wall of the inner steel cylinder 8 is provided with a concrete layer 2, and the concrete layer 2 is provided with a high-strength steel mesh 1.

[0024] Both ends of the inner steel cylinder 8 are provided with flanges 21, the flanges 21 are regularly provided with stiffening ribs 91, and the stiffening ribs 91 are connected with the outer wall of the inner steel cylinder 8.

[0025] ​​The flanges 21 of the adjacent non-prestressed inner steel cylinder concrete water supply pipe are connected by M36 bolts 31.

[0026] The two flanges 21 are welded to the sockets 4 and spigots 7, respectively.

[0027] The inner anticorrosive layer 9 is one of an epoxy resin paint, an epoxy ceramic paint, an IPN8710 anticorrosive paint, and a cement mortar.

[0028] The number of the high-strength steel mesh 1 is more than one, the high-strength steel mesh 1 is a cylindrical steel mesh, and the high-strength steel mesh 1 is arranged with the same center as the inner steel cylinder 8.

[0029] The outer wall of the inner steel cylinder 8 is welded with a ring 5, and the number of the ring 5 is more than one, and the ring 5 is uniformly arranged on the outer wall of the inner steel cylinder 8.

[0030] The socket 4 and the spigot 7 of the adjacent non-prestressed inner steel cylinder concrete are inserted into each other, and the number of the A-shaped rubber ring 3 is more than two, and the A-shaped rubber ring 3 is in close contact with the socket 4 and the spigot 7.

[0031] The inner steel cylinder 8 is a corrugated reinforced spiral weld or a straight seam weld high-strength steel pipe.

[0032] The concrete layer 2 is C50 or above, and the high-strength steel mesh 1 is used as the steel reinforcement framework of the concrete layer 2; the inner anticorrosive layer 9 uses one of an epoxy resin paint, an epoxy ceramic paint, an IPN8710 anticorrosive paint, and a cement mortar according to requirements, and the product is mainly used in underwater operations or other special scenarios of medium and high pressure water supply engineering.

[0033] Embodiment

[0034] A non-prestressed inner steel cylinder concrete water supply pipe, characterized in that it comprises a high-strength steel mesh 1, a concrete layer 2, an A-shaped rubber ring 3, a socket 4, a ring 5, a pressure test port 6, a spigot 7, an inner steel cylinder 8, and an inner anticorrosive layer 9.

[0035] The inner steel cylinder 8 is a spiral weld or a straight seam weld high-strength steel pipe with an inner anticorrosive layer 9 on the inner wall, one end of the inner steel cylinder 8 is integrally formed with a socket 4, and the other end of the inner steel cylinder 8 is welded with a spigot 7; two A-shaped rubber rings 3 are regularly arranged on the spigot 7, and a pressure test port 6 is also regularly arranged on the spigot 7.

[0036] The outer wall of the inner steel cylinder 8 is provided with a concrete layer 2, and the concrete layer 2 is provided with a high-strength steel mesh 1.

[0037] The outer wall of the inner steel cylinder 8 is welded with a ring 5, and the number of the ring 5 is more than one, and the ring 5 is uniformly arranged on the outer wall of the inner steel cylinder 8.

[0038] Embodiment

[0039] The non-prestressed inner steel cylinder concrete water supply pipe is characterized by comprising a high-strength steel mesh 1, a concrete layer 2, an A-shaped rubber ring 3, a socket 4, a pressure test port 6, a spigot 7, an inner steel cylinder 8, and an inner anticorrosion layer 9.

[0040] The inner steel cylinder 8 is a spiral-welded or straight-welded high-strength steel pipe with the inner anticorrosion layer 9 arranged on the inner wall, one end of the inner steel cylinder 8 is integrally formed with the socket 4, and the other end of the inner steel cylinder 8 is welded with the spigot 7; two A-shaped rubber rings 3 are regularly arranged on the spigot 7, and the pressure test port 6 is also regularly arranged on the spigot 7.

[0041] The outer wall of the inner steel cylinder 8 is provided with the concrete layer 2, and the concrete layer 2 is provided with the high-strength steel mesh 1.

[0042] Both ends of the inner steel cylinder 8 are provided with flanges 21, and the flanges 21 are regularly provided with reinforcing ribs 91 connected with the outer wall of the inner steel cylinder 8.

[0043] The flanges 21 of adjacent non-prestressed inner steel cylinder concrete water supply pipes are connected by M36 bolts 31.

[0044] The two flanges 21 are respectively welded with the socket 4 and the spigot 7.

[0045] Both ends of the inner steel cylinder 8 can be provided with flanges 21, the flanges 21 are reinforced and connected with the outer wall of the inner steel cylinder 8 by the reinforcing ribs 91, and the flanges 21 are used for making the adjacent non-prestressed inner steel cylinder concrete water supply pipes more stable when connected.

[0046] The non-prestressed inner steel cylinder concrete water supply pipe of the present application has the following characteristics:

[0047] 1. High strength

[0048] The ring rib 5 welded on the high-strength steel inner steel cylinder 8 enhances the radial stiffness and the internal and external pressure resistance of the inner steel cylinder 8.

[0049] 2. Light weight

[0050] The inner steel cylinder 8 adopts a corrugated reinforced spiral-welded or straight-welded high-strength steel pipe; the steel reinforcement framework adopts a high-strength steel mesh 1, and the reinforcement amount is reduced by about 50% under the same compressive strength, thereby significantly reducing the overall pipe weight of the large-diameter pipe.

[0051] 3. Excellent corrosion resistance

[0052] a. Cement will generate a large amount of calcium hydroxide in the hydration process, so that the voids of the concrete layer 2 are filled with saturated calcium hydroxide solution, forming an alkaline environment. This alkaline medium has a good protective effect on the steel and the outer wall of the inner steel cylinder 8, forming a difficultly soluble Fe2O3 and Fe3O4 passivation film on the surface, preventing further corrosion of the outer wall of the ring 5 and the inner steel cylinder 8.

[0053] b. There is no prestressed steel working under high stress conditions in this application, so stress corrosion will not occur.

[0054] c. The concrete layer 2 uses a vibrating molding process to improve the density, which can effectively block the intrusion of external corrosive media, making it difficult for corrosive media to reach the surface of the ring 5 and the outer wall of the inner steel cylinder 8, thereby protecting them from corrosion.

[0055] The inner corrosion layer 9 uses epoxy resin paint, epoxy ceramic paint, IPN8710 anti-corrosion paint, etc. according to requirements, to ensure that every inch of the inner steel cylinder 8 is protected without any detail.

[0056] 4. Good impermeability

[0057] This application adopts a socket and spigot connection mode with double A type rubber rings 3 cooperating with the socket 4 and the spigot 7. The socket 4 and the spigot 7 are produced by mold, and the overall pipeline working pressure is ≥1.6MPa; the test pressure is ≥2.1MPa. The socket 4 and the spigot 7 have a self-positioning effect, and the joint sealing performance is good when cooperating with the A type rubber ring 3. The double A type rubber rings 3 form two sealing lines. When one A type rubber ring 3 is not sealed tightly, the other A type rubber ring 3 can still play a sealing role, which can effectively prevent water leakage. At the same time, the first A type rubber ring 3 can completely block various impurities in the water, so that the second A type rubber ring 3 only needs to play a backup sealing role. Under complex working conditions such as pipeline pressure fluctuation and slight pipeline deformation, the double A type rubber rings 3 can better adapt to and maintain the sealing performance, reduce the risk of leakage, and ensure the impermeability of the pipe.

[0058] 5. More convenient detection

[0059] The double A type rubber rings 3 can be perforated and sealed for sealing detection, which can timely find sealing problems and make adjustments during installation. This avoids the situation of returning to work after finding problems after installing single A type rubber rings, improves construction efficiency, and reduces pressure testing cost.

[0060] 6. Reliable safety performance

[0061] The contact pressure of the A type rubber ring 3 increases with the increase of the internal water pressure, and the sealing effect is better, which is less likely to leak. It also has a certain range of angular deflection, which can well adapt to the settlement of the foundation and can resist a certain earthquake environment.

[0062] 7. Convenient construction

[0063] The application adopts the connection mode of superimposing the A-type rubber ring 3 and the flange 21 on the socket joint, which is convenient for construction and easy to assemble the application on site.

[0064] 8. Long service life. Through the above design, the service life of the application can reach more than 50 years.

[0065] The detailed installation embodiment of the application is as follows:

[0066] The spiral welded or straight welded inner steel cylinder 8 is made; the inner steel cylinder 8 is subjected to weld detection; the socket 7 and the socket 4 are respectively machined and installed at both ends of the inner steel cylinder 8; the flange 21 and the reinforcing rib 91 are welded on the socket 7 and the socket 4; the high-strength steel mesh 1 is laid; the concrete layer 2 is formed by the vibration forming process of pouring concrete; the concrete layer 2 is subjected to curing; the inner anticorrosion layer 9 is set to perform inner anticorrosion, and the inner anticorrosion layer 9 forms the inner anticorrosion layer by using different epoxy resin paint and IPN8710 anticorrosive paint as needed.

Claims

1. A non-prestressed concrete cylinder water pipe, characterized by, The utility model relates to a non-prestressed inner steel cylinder concrete water supply pipe, which comprises a high-strength steel mesh (1), a concrete layer (2), an A-shaped rubber ring (3), a socket (4), a pressure testing port (6), a spigot (7), an inner steel cylinder (8) and an inner anticorrosive layer (9). The inner steel cylinder (8) is a spiral-welded or straight-welded high-strength steel pipe with an inner anticorrosive layer (9) on the inner wall, one end of the inner steel cylinder (8) is integrally formed with a socket (4), and the other end of the inner steel cylinder (8) is welded with a spigot (7); two A-shaped rubber rings (3) are regularly arranged on the spigot (7), and a pressure testing port (6) is also regularly arranged on the spigot (7). The outer wall of the inner steel cylinder (8) is provided with a concrete layer (2), and the concrete layer (2) is provided with a high-strength steel mesh (1) inside. Both ends of the inner steel cylinder (8) are provided with flanges (21), and the flanges (21) are regularly provided with reinforcing ribs (91) connected with the outer wall of the inner steel cylinder (8).

2. A non-prestressed concrete water pipe with inner steel cylinder according to claim 1, characterized in that: The flanges (21) of adjacent non-prestressed inner steel cylinder concrete water supply pipes are connected by M36 bolts (31).

3. A non-prestressed concrete water pipe with inner steel cylinder according to claim 2, characterized in that: The two flanges (21) are respectively welded with the socket (4) and the spigot (7).

4. The non-prestressed concrete water pipe with inner steel cylinder according to claim 2, characterized in that: The inner anticorrosive layer (9) is one of an epoxy resin paint, an epoxy ceramic paint, an IPN8710 anticorrosive paint and a cement mortar coating.

5. The non-prestressed concrete water pipe with internal steel cylinder according to claim 1, characterized in that: The number of the high-strength steel mesh (1) is more than one layer, the high-strength steel mesh (1) is a cylindrical steel mesh, and the high-strength steel mesh (1) is arranged with the same center as the inner steel cylinder (8).

6. The non-prestressed concrete water pipe with internal steel cylinder according to claim 1, characterized in that: The outer wall of the inner steel cylinder (8) is welded with a ring rib (5), and the number of the ring rib (5) is more than one, and the ring rib (5) is uniformly arranged on the outer wall of the inner steel cylinder (8).

7. The non-prestressed concrete water pipe with internal steel cylinder according to claim 1, characterized in that: The socket (4) and the spigot (7) of adjacent non-prestressed inner steel cylinder concrete pipes are mutually inserted, and the two A-shaped rubber rings (3) are in close contact with the socket (4) and the spigot (7).

8. The non-prestressed concrete water pipe with internal steel cylinder according to claim 1, characterized in that: The inner steel cylinder (8) is a corrugated reinforced spiral-welded or straight-welded high-strength steel pipe.

9. The non-prestressed concrete water pipe with internal steel cylinder according to claim 1, characterized in that: ​

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