Corrosion-resistant steel wire pipe

Abstract

The utility model relates to a corrosion-resistant steel wire pipe which comprises a pipe body, a silicon carbide coating is sprayed on the inner wall of the pipe body, a net-shaped reinforcing structure formed by cross winding of fibers and alloy wires is arranged on the outer wall of the pipe body, the pipe body is connected with an outer protective layer outside the net-shaped reinforcing structure, and annular clamping teeth are arranged on the inner side of the outer protective layer. The tail ends of the annular clamping teeth are provided with 45-degree barb parts which can be inserted into grids of the net-shaped reinforcing structure and are clamped with the grids of the net-shaped reinforcing structure. The steel wire pipe can effectively resist high temperature corrosion, and is high in structural strength and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic pipe, concretely relates to a corrosion -resistant steel wire pipe. BACKGROUND

[0002] Plastic pipe is a kind of widely used pipeline material, involves PVC pipe, PE pipe and steel wire pipe wrapped with steel wire, due to its excellent chemical stability and strong mechanical property, is widely used in municipal drainage and rainwater collection, construction engineering, agricultural irrigation, industrial application and food processing.

[0003] Common PVC steel wire pipe, that is, the PVC steel wire reinforced pipe that we commonly call, its pipe material is three-layer structure, and the inner and outer two layers are PVC soft plastic, and the middle layer is steel wire reinforced structure, or steel wire mesh or spiral steel wire.

[0004] The above-mentioned polyethylene pipe is relatively simple and single in overall structure when in use, and the structural strength and high-temperature corrosion resistance are relatively poor in the use process, resulting in short service life, frequent replacement, high maintenance cost, limited application range and difficult popularization and use. INVENTION CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a corrosion -resistant steel wire pipe, and the pipe body has high structural strength, stable performance, high-temperature corrosion resistance, wide application range, long service life and low maintenance cost.

[0006] The utility model is realized through the following technical schemes:

[0007] Provide a kind of corrosion -resistant steel wire pipe, including pipe body, pipe body inner wall is sprayed with silicon carbide coating, pipe body outer wall is provided with the mesh-shaped reinforcing structure formed by the cross winding of fiber and alloy wire, pipe body is connected outside protective layer in mesh-shaped reinforcing structure, the inside of outside protective layer is provided with annular latch, the end of annular latch is provided with 45 ° barb portion that can be inserted into the grid of mesh-shaped reinforcing structure and is clamped.

[0008] The inner wall of pipe body is sprayed with silicon carbide coating to form a dense layer, which can effectively resist high-temperature environment and improve the high-temperature corrosion resistance, the mesh-shaped reinforcing structure is formed by cross winding of fiber and alloy wire and is fixed by laser welding at the joint, which can effectively enhance the structural strength of the pipe body, the inside of the outer protective layer is connected with the mesh-shaped reinforcing structure by mechanical interlocking, replacing the traditional adhesive bonding, improving the pullout resistance between the two, and the pipe body has the advantages of high-temperature corrosion resistance and structural enhancement by the inner and outer coating.

[0009] Further, the fiber yarn is basalt fiber, 0.3mm in diameter, fixed on the pipe body at an interval of 2mm along the 0° direction; the alloy wire is nickel-chromium alloy wire, 0.5mm in diameter, spirally arranged on the basalt fiber at a spiral pitch of 3mm along the 90° direction, and the basalt fiber and the nickel-chromium alloy wire are wound in a 90° orthogonal manner to form a mesh-shaped reinforcing structure through geometric interlocking.

[0010] The fiber and the alloy wire are wound in a 90° orthogonal manner to form a stable mesh-shaped structure through geometric interlocking, and a low-melting gallium-indium alloy is injected in the winding process to fill the gap between the fiber and the alloy

[0011] Further, the two ends of the basalt fiber are fixed on the pipe body through epoxy resin adhesion.

[0012] The two ends of the basalt fiber are adhesively fixed on the pipe body by epoxy resin, which is stable in performance and convenient to operate.

[0013] Further, the two ends of the nickel-chromium alloy wire are preformed with V-shaped grooves and fixed on the pipe body through laser welding.

[0014] The end of the nickel-chromium alloy wire is preformed with a V-shaped groove to facilitate laser welding and improve the connection stability.

[0015] Further, the outer protective layer is a ceramicized silicone rubber layer.

[0016] The ceramicized silicone rubber layer has good wear resistance and abrasion resistance, can improve the protection of the pipe body, and improve the stability of the pipe body.

[0017] The utility model discloses the beneficial effects of:

[0018] The utility model discloses can utilize integrated extrusion forming cooperation modular assembly to realize quick production and processing, and the overall high temperature limit corrosion ability is promoted, and the structural strength is promoted, and the service life is prolonged.

[0019] The coating layer of the pipe body inner wall has corrosion resistance, the compressive resistance of the mesh-shaped reinforcing structure, and the wear resistance of the outer protective layer, each layer is independently optimized, material performance conflict is avoided, the pipe body performance combination is superposed optimization, the anticorrosion performance is promoted, the structural strength is high, the service life is long, is not easy to breakage, is convenient for maintenance, effectively reduces the cost. DETAILED DESCRIPTION

[0020] Fig. 1 It is the cross section schematic drawing of the utility model.

[0021] Fig. 2 It is the schematic diagram of the mesh-shaped reinforcing structure in the utility model.

[0022] Fig. 3 It is the cross section schematic drawing of the outer protective layer in the utility model.

[0023] As shown in the drawings:

[0024] 1. Tube body; 2. Silicon carbide coating; 3. Mesh reinforcement structure; 31. Nickel-chromium alloy wire; 32. Basalt fiber; 4. Outer protective layer; 41. Annular retaining teeth; 411. Barbed part. Detailed Implementation

[0025] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] like Figs. 1-3 As shown, a corrosion-resistant steel wire pipe includes a pipe body 1. The inner wall of the pipe body 1 is coated with a silicon carbide coating 2. A gradient transition layer is formed on the surface of the silicon carbide coating 2 by plasma spraying. The transition layer consists of aluminum oxide, silicon dioxide, and silicon carbide from the outside to the inside. By using high-temperature flame spraying (HOVF) technology for spraying, thermal expansion stress can be effectively reduced, and the cost is much lower than that of a full ceramic coating. The outer wall of the pipe body 1 is provided with a mesh reinforcement structure 3 formed by cross-winding of fibers and alloy wires. An outer protective layer 4 is connected to the outside of the mesh reinforcement structure 3. In this invention, the outer protective layer 4 is a ceramicized silicon rubber layer.

[0027] The inner side of the outer protective layer 4 is provided with annular locking teeth 41, with a tooth height of 0.3 mm and a spacing of 2 mm. The end of the annular locking teeth 41 is provided with a 45° barb part 411 that can be inserted into the mesh of the mesh reinforcement structure 3 and engaged with it. The barb parts 411 are symmetrically arranged on both sides of the end of the annular locking teeth 41. They can be hooked onto the mesh reinforcement structure 3 through the barb parts 411 to achieve mechanical locking, improve the tensile strength, and ensure the stability of the connection.

[0028] The fibers and alloy wires can be simultaneously wound into a web using a winding machine. The fibers are basalt fiber 32, with a diameter of 0.3 mm, spaced 2 mm apart along the 0° direction. Both ends of the basalt fiber 32 are bonded to the tube body 1 with epoxy resin. Basalt fiber 32 is a high-performance fiber material with high strength, high modulus, high temperature resistance, and corrosion resistance.

[0029] The alloy wire is a nickel-chromium alloy wire 31 with a diameter of 0.5 mm, wound around basalt fiber 32 in a 90° spiral with a pitch of 3 mm. The basalt fiber 32 and the nickel-chromium alloy wire 31 are wound in a 90° orthogonal manner and geometrically interlocked to form a mesh reinforcement structure 3. Both ends of the nickel-chromium alloy wire 31 have pre-formed V-grooves and are fixed to the tube body 1 by laser welding. The nickel-chromium alloy wire 31 typically has good high-temperature strength, oxidation resistance, and corrosion resistance, especially performing excellently in high-temperature environments.

[0030] The meshed reinforcing structure 3 formed by the two has the effect of enhancing the mechanical properties of the material, improving tensile strength, compressive strength, impact resistance, etc. At the same time, the meshed structure plays a role in heat conduction, electrical conduction or stress dispersion. Combined with the two materials, a composite material is formed, which has the advantages of both.

[0031] The outer protective layer 4 has an annular clamping tooth 41 on the inner side, which is used to connect with the meshed structure of basalt fiber 32 and nichrome wire 31, is located on the inner side of the outer protective layer 4, and is mechanically interlocked through the clamping tooth structure, thereby providing structural support.

[0032] The utility model discloses when installing, first pretreatment is carried out to pipe body 1, then through spray treatment sprays silicon carbide layer 2, and the fixed installation of net -like reinforcing structure 3 of processing of pipe body 1 outside, and the outer protective layer 4 is extruded by extruder and is formed, and is connected in the outside of net -like reinforcing structure 3 in the form of sleeve, and the barb portion 411 of annular clamping tooth 41 end portion is used to be combined with net -like reinforcing structure 3 and mechanically self -locking, realizes firm connection.

[0033] The corrosion-resistant steel wire pipe can be applied to a steam pipe under high-temperature working conditions, has the effect of resisting high-temperature corrosion, has high tensile strength and long thermal shock cycle life.

[0034] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not limited to the utility model. The preferred embodiments of the utility model are described in detail, and those skilled in the art should understand that changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.

Claims

1. A corrosion resistant steel wire pipe comprising a pipe body, characterized by: The inner wall of the pipe body is sprayed with a silicon carbide coating, the outer wall of the pipe body is provided with a mesh-shaped reinforcing structure formed by the cross winding of fiber and alloy wire, the pipe body is connected with an outer protective layer outside the mesh-shaped reinforcing structure, the inner side of the outer protective layer is provided with an annular clamping tooth, and the end of the annular clamping tooth is provided with a 45° barb part which can be inserted into the mesh of the mesh-shaped reinforcing structure and clamped.

2. The corrosion resistant steel wire pipe according to claim 1, characterized in that: The fiber wire is basalt fiber with a diameter of 0.3 mm and is fixed on the pipe body along the 0° direction at intervals of 2 mm; the alloy wire is nickel-chromium alloy wire with a diameter of 0.5 mm and is spirally arranged on the basalt fiber along the 90° direction at a spiral pitch of 3 mm, and the basalt fiber and the nickel-chromium alloy wire are wound in a 90° orthogonal manner to form the mesh-shaped reinforcing structure through geometric interlocking.

3. The corrosion resistant steel wire pipe according to claim 2, characterized in that: Both ends of the basalt fiber are fixed on the pipe body through epoxy resin adhesion.

4. The corrosion resistant steel wire pipe according to claim 2, characterized in that: Both ends of the nickel-chromium alloy wire are preformed with V-shaped grooves and are fixed between the pipe body through laser welding.

5. The corrosion resistant steel wire pipe of claim 1, wherein: The outer protective layer is a ceramicized silicone rubber layer.

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