Heat-resistant oxygen-resistant stainless steel composite pipe

Abstract

The utility model discloses a heat-resisting oxygen-resisting stainless steel composite pipe which comprises a stainless steel layer, a composite layer is connected to the inner surface of the stainless steel layer in a hot melting and bell-and-spigot joint mode, and a winding steel wire mesh is embedded in the composite layer. The steel wire mesh is embedded and wound in the stainless steel layer, so that the steel wire mesh can deform along with the stainless steel layer under the condition that the stainless steel layer receives external pressure and simultaneously generate counter-acting force, the counter-acting force counteracts the pressure received by the stainless steel layer, the deformation quantity of the stainless steel layer caused by external force is reduced, and the service life of the stainless steel layer is prolonged. And the structural strength of the stainless steel pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel composite pipes, in particular to a heat-resistant and oxygen-resistant stainless steel composite pipe. Background Art

[0002] Stainless steel pipe is a hollow long steel strip with many excellent performance characteristics. It is widely used in many industries and fields. It has excellent corrosion resistance and can resist the erosion of various chemical substances, such as acid, alkali, salt, etc. This makes the service life of stainless steel pipe very long and can maintain long-term stable performance in complex environments. At the same time, stainless steel pipe has the characteristics of high strength and light weight. It has high tensile strength and yield strength, and can withstand large pressure and bending stress. At the same time, the density of stainless steel pipe is small, which is lighter than traditional steel pipe materials and easy to transport and install.

[0003] Currently, most stainless steel pipes are usually buried in areas below the surface for transporting fluid raw materials. Since the pipes are always underground, they are easily deformed when subjected to foundation settlement or earthquakes. The deformed pipes cannot be used normally and need to be replaced, and their structural strength is low. Utility Model Content

[0004] The utility model aims to provide a heat-resistant and oxygen-resistant stainless steel composite pipe to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a heat-resistant and oxygen-resistant stainless steel composite pipe, comprising a stainless steel layer, the inner surface of the stainless steel layer is hot-melt-connected with a composite layer, and a wound steel wire mesh is embedded inside the composite layer.

[0006] As a further preferred embodiment of the present technical solution, a heat insulation layer is provided in the hot-melt socket connection inside the composite layer.

[0007] As a further preferred embodiment of the present technical solution, a heat-resistant layer is provided on the inner surface of the heat insulation layer through hot-melt socket connection.

[0008] As a further preferred embodiment of the present technical solution, an aluminum alloy layer is bonded to the outer surface of the stainless steel layer.

[0009] As a further preferred embodiment of the present technical solution, the thickness of the aluminum alloy layer is 0.05 mm.

[0010] As a further preferred embodiment of the present technical solution, the thickness of the stainless steel layer is 0.08 mm.

[0011] The utility model provides a heat-resistant and oxygen-resistant stainless steel composite pipe, which has the following beneficial effects:

[0012] The utility model embeds and wraps the wire mesh inside the stainless steel layer, so that when the stainless steel layer is subjected to external pressure, the wire mesh can be deformed along with the stainless steel layer and generate a reaction force at the same time, thereby offsetting the pressure received by the stainless steel layer, reducing the deformation of the stainless steel layer caused by the external force and improving the structural strength of the stainless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0015] Figure 3 It is an exploded schematic diagram of the internal structure of the entire utility model.

[0016] In the figure: 1. Heat-resistant layer; 2. Heat-insulating layer; 3. Composite layer; 4. Wrapped steel mesh; 5. Stainless steel layer; 6. Aluminum alloy layer. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] The utility model provides a technical solution: Figure 1-3 As shown, in the present embodiment, a heat-resistant and oxygen-resistant stainless steel composite pipe comprises a stainless steel layer 5, the inner surface of the stainless steel layer 5 is connected with a composite layer 3 by hot-melt socket connection, a winding steel wire mesh 4 is embedded inside the composite layer 3, and the composite layer 3 is made of thermoplastic high-density polyethylene, which has high density, high strength, good rigidity, strong chemical resistance, stable shape, and is not easily affected by temperature, humidity and microorganisms. The winding steel wire mesh 4 can be positioned and fixed to improve the structural stability. By setting the winding steel wire mesh 4, the stainless steel pipe can have a strong resistance to environmental influences such as foundation settlement and earthquake. The material used is high-strength plasticized steel wire, and its yield strength is usually more than twice that of ordinary steel wire, and its tensile strength can also reach more than three times that of ordinary steel wire, and it has excellent mechanical properties and corrosion resistance.

[0019] like Figure 2 and Figure 3 As shown, the composite layer 3 is hot-melt connected with an insulation layer 2 inside. By setting the insulation layer 2, the temperature of the liquid can be isolated to play a role in heat preservation. The material is polyimide, which has the characteristics of inherent flame retardancy, strong heat resistance, light weight, environmental protection and non-toxicity. It can be used for a long time under extreme conditions such as ultra-high temperature, ultra-low temperature, high salt fog, strong noise, strong corrosion, and strong radiation.

[0020] like Figure 3As shown, the inner surface of the heat insulation layer 2 is hot-melt connected with a heat-resistant layer 1. By setting the heat-resistant layer 1, deformation can be avoided and the heat insulation layer 2 can be prevented from directly contacting the liquid. The material is heat-resistant polyethylene, which has excellent temperature resistance, heat insulation performance, long service life, chemical corrosion resistance, good environmental protection performance and good shape recovery memory performance.

[0021] like Figure 1 and Figure 2 As shown, the outer surface of the stainless steel layer 5 is bonded with an aluminum alloy layer 6. By providing the aluminum alloy layer 6, the outside air can be completely isolated to prevent the infiltration of oxygen, and the ultraviolet rays can be isolated to prevent oxidation.

[0022] like Figure 1 As shown, the thickness of the aluminum alloy layer 6 is 0.05 mm, which is the optimal thickness and can play a stabilizing role while maintaining the minimum mass of the entire pipe.

[0023] The utility model provides a heat-resistant and oxygen-resistant stainless steel composite pipe, and the specific working principle is as follows:

[0024] When the transported liquid passes through the stainless steel pipe, the heat-resistant layer 1 can remain unchanged under high temperature conditions, thereby ensuring the stability of the structure, while the heat-insulating layer 2 plays a role of heat preservation by isolating the temperature generated by the liquid. It can also prevent the composite layer 3 from melting due to excessively high temperature. When the stainless steel pipe is subjected to external force, the wire mesh 4 is embedded and wrapped inside the stainless steel layer 5. When the stainless steel layer 5 is subjected to external pressure, it can deform along with the stainless steel layer 5 and generate a reaction force at the same time, thereby offsetting the pressure on the stainless steel layer 5, reducing the deformation of the stainless steel layer 5 caused by the external force, and improving the structural strength of the stainless steel pipe.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat-resistant and oxygen-barrier stainless steel composite pipe, comprising a stainless steel layer (5), characterized in that: The inner surface of the stainless steel layer (5) is connected to a composite layer (3) by hot-melt socket connection, and a winding steel wire mesh (4) is embedded in the composite layer (3).

2. The heat-resistant and oxygen-barrier stainless steel composite pipe according to claim 1, characterized in that: The composite layer (3) is internally connected with a heat insulating layer (2) by hot-melt socket connection.

3. The heat-resistant and oxygen-barrier stainless steel composite pipe according to claim 2, characterized in that: The inner surface of the heat insulation layer (2) is connected to a heat-resistant layer (1) by hot-melt socket connection.

4. The heat-resistant and oxygen-barrier stainless steel composite pipe according to claim 3, characterized in that: An aluminum alloy layer (6) is bonded to the outer surface of the stainless steel layer (5).

5. The heat-resistant and oxygen-barrier stainless steel composite pipe according to claim 4, characterized in that: The thickness of the aluminum alloy layer (6) is 0.05 mm.

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