Low-temperature-resistant anti-freezing plastic-coated composite steel pipe

Abstract

The utility model discloses a low-temperature-resistant antifreeze plastic-coated composite steel pipe which comprises a plastic-coated composite steel pipe body, the plastic-coated composite steel pipe body comprises a pipe body, the circumferential outer wall of the pipe body is fixedly connected with a heat preservation layer, the circumferential outer wall of the heat preservation layer is provided with a plastic-coated layer, and the circumferential outer wall of the plastic-coated layer is fixedly connected with a heat insulation layer. The outer circumferential wall of the heat insulation layer is coated with a wear-resistant layer, the wear-resistant layer is made of polytetrafluoroethylene, the plastic-coated layer is made of epoxy resin or polypropylene, and the heat preservation layer is made of polyurethane heat preservation materials or phenolic foam heat preservation materials or aluminum foil materials. According to the plastic-coated composite steel pipe, the plastic-coated composite steel pipe body has good heat preservation and heat insulation performance and is more anti-freezing and durable, meanwhile, the plastic-coated composite steel pipe body can be more resistant to corrosion and aging, and the plastic-coated composite steel pipe body can be further reinforced through the steel mesh.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe technical field especially relates to a low temperature resistant and freeze resistant plastic coated composite steel pipe. BACKGROUND

[0002] The plastic coated composite steel pipe is a kind of pipe material coated with plastic on the surface of steel pipe, and is widely used in conveying medium, corrosion and erosion prevention and thermal insulation engineering projects.

[0003] However, the plastic coated composite steel pipe has poor frost resistance, when the temperature of liquid flowing in the pipeline is below freezing point, the liquid in the pipeline will freeze and expand, so that the pipe wall bears high internal pressure, and safety hazards such as pipe rupture and water leakage are caused. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a low temperature resistant and freeze resistant plastic coated composite steel pipe.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A low temperature resistant and freeze resistant plastic coated composite steel pipe, comprising a plastic coated composite steel pipe body, the plastic coated composite steel pipe body includes a pipe body, the circumferential outer wall of the pipe body is fixedly connected with a thermal insulation layer, the circumferential outer wall of the thermal insulation layer is provided with a plastic coating layer, the circumferential outer wall of the plastic coating layer is fixedly connected with a heat insulation layer, and the circumferential outer wall of the heat insulation layer is coated with a wear-resistant layer.

[0007] As a further scheme of the utility model, the material of the wear-resistant layer is polytetrafluoroethylene.

[0008] As a further scheme of the utility model, the material of the plastic coating layer is epoxy resin or polypropylene.

[0009] As a further scheme of the utility model, the thermal insulation layer is polyurethane thermal insulation material, phenolic foam thermal insulation material or aluminum foil material.

[0010] As a further scheme of the utility model, the heat insulation layer is rock wool layer.

[0011] As a further scheme of the utility model, the outer side of both ends of the plastic coated composite steel pipe body is provided with a threaded groove.

[0012] As a further scheme of the utility model, the circumferential outer wall of the plastic coated composite steel pipe body is fixedly connected with a steel mesh.

[0013] The utility model has the advantages that:

[0014] 1. This utility model not only enables the plastic-coated composite steel pipe body to have good heat insulation and heat insulation performance through the heat insulation layer and the heat insulation layer with low thermal conductivity, but also enables the plastic-coated composite steel pipe body to have anti-corrosion and anti-aging properties, thereby making the plastic-coated composite steel pipe body more resistant to freezing and durable, and improving the service life of the device.

[0015] 2. This utility model not only facilitates quick connection between multiple plastic-coated composite steel pipe bodies through the threaded groove, but also strengthens the plastic-coated composite steel pipe bodies through the steel mesh, thereby making the device more durable. Attached Figure Description

[0016] Fig. 1 This is a three-dimensional structural diagram of a low-temperature resistant and freeze-resistant plastic-coated composite steel pipe proposed in this utility model;

[0017] Fig. 2 This is a schematic diagram of the main body structure of a low-temperature resistant and freeze-resistant plastic-coated composite steel pipe proposed in this utility model.

[0018] Fig. 3 This is a partial cross-sectional view of a low-temperature resistant and freeze-resistant plastic-coated composite steel pipe proposed in this utility model.

[0019] In the diagram: 1. Plastic-coated composite steel pipe body; 2. Threaded groove; 3. Wear-resistant layer; 4. Heat insulation layer; 5. Plastic coating layer; 6. Thermal insulation layer; 7. Pipe body; 8. Steel mesh. Detailed Implementation

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0021] Example 1

[0022] Reference Figs. 1-3A low-temperature resistant and freeze-resistant plastic-coated composite steel pipe includes a plastic-coated composite steel pipe body 1, which includes a pipe body 7. An insulation layer 6 is bonded to the outer circumference of the pipe body 7. The insulation layer 6 is made of polyurethane insulation material, which has an extremely low thermal conductivity, effectively preventing heat transfer and significantly reducing energy consumption. Therefore, it has excellent insulation performance, as well as excellent weather resistance and aging resistance. A plastic coating layer 5 is provided on the outer circumference of the insulation layer 6. The plastic coating layer 5 is made of epoxy resin. Excellent physical, mechanical, and electrical insulation properties facilitate the bonding of various materials. The outer circumference of the plastic coating layer 5 is bonded with a heat insulation layer 4, which is a rock wool layer. The rock wool layer has excellent thermal insulation performance, excellent fire resistance, and good sound insulation effect. It also has strong seismic resistance and is environmentally friendly and healthy. The outer circumference of the heat insulation layer 4 is coated with a wear-resistant layer 3, which is made of polytetrafluoroethylene. Polytetrafluoroethylene has high chemical stability, corrosion resistance, low coefficient of friction, good self-lubrication, heat resistance, and electrical insulation.

[0023] In this utility model, it should be noted that threaded grooves 2 are provided on the outer sides of both ends of the plastic-coated composite steel pipe body 1 to facilitate the connection between multiple plastic-coated composite steel pipe bodies 1. A steel mesh 8 is bonded to the outer circumference of the plastic-coated composite steel pipe body 1 to strengthen the plastic-coated composite steel pipe body 1 and make it more durable.

[0024] Working principle: When a low-temperature resistant and freeze-resistant plastic-coated composite steel pipe is needed, the plastic-coated composite steel pipe body 1 is insulated by the insulation material. Due to its extremely low thermal conductivity, it effectively prevents heat transfer and significantly reduces energy consumption. At the same time, it has excellent weather resistance and aging resistance. The insulation layer 4 is a rock wool layer, which has excellent thermal insulation performance, excellent fire resistance and good sound insulation effect, as well as strong seismic performance and environmental protection. Thus, the plastic-coated composite steel pipe body 1 has a heat insulation effect.

[0025] Example 2

[0026] Reference Figs. 1-3 A low-temperature resistant and freeze-resistant plastic-coated composite steel pipe includes a plastic-coated composite steel pipe body 1, which includes a pipe body 7. An insulation layer 6 is bonded to the outer circumference of the pipe body 7. The insulation layer 6 is made of phenolic foam insulation material, which not only has excellent fire resistance but also low thermal conductivity, providing good thermal insulation performance, corrosion resistance, and aging resistance. A plastic coating layer 5 is provided on the outer circumference of the insulation layer 6. The plastic coating layer 5 is made of polypropylene, which has excellent toughness and strength, strong wear resistance, and corrosion resistance. A heat insulation layer 4 is bonded to the outer circumference of the plastic coating layer 5. The heat insulation layer 4 is a rock wool layer, which has excellent thermal insulation performance, excellent fire resistance, good sound insulation, strong seismic performance, and is environmentally friendly and healthy. A wear-resistant layer 3 is coated on the outer circumference of the heat insulation layer 4.

[0027] In this utility model, it should be noted that the wear-resistant layer 3 is made of polytetrafluoroethylene (PTFE). PTFE has high chemical stability, corrosion resistance, low coefficient of friction, good self-lubrication, heat resistance, and electrical insulation. Threaded grooves 2 are provided on the outer sides of both ends of the plastic-coated composite steel pipe body 1. A steel mesh 8 is bonded to the outer circumference of the plastic-coated composite steel pipe body 1, which strengthens the plastic-coated composite steel pipe body 1 and makes it more durable.

[0028] Example 3

[0029] Reference Figs. 1-3 A low-temperature resistant and freeze-resistant plastic-coated composite steel pipe includes a plastic-coated composite steel pipe body 1, which includes a pipe body 7. An insulation layer 6 is bonded to the outer circumference of the pipe body 7. The insulation layer 6 is made of aluminum foil, which has excellent heat reflection properties, effectively reflecting external heat radiation, reducing heat absorption, and maintaining stable internal temperature. A plastic coating layer 5 is provided on the outer circumference of the insulation layer 6. The plastic coating layer 5 is made of epoxy resin, which has excellent physical, mechanical, and electrical insulation properties, facilitating the bonding of various materials. A heat insulation layer 4 is bonded to the outer circumference of the plastic coating layer 5. The heat insulation layer 4 is a rock wool layer, which has excellent heat insulation performance, superior fire resistance, and good sound insulation, as well as strong seismic resistance and is environmentally friendly and healthy. A wear-resistant layer 3 is coated on the outer circumference of the heat insulation layer 4.

[0030] In this utility model, it should be noted that the wear-resistant layer 3 is made of polytetrafluoroethylene (PTFE). PTFE has high chemical stability, corrosion resistance, low coefficient of friction, good self-lubrication, heat resistance, and electrical insulation. Threaded grooves 2 are provided on the outer sides of both ends of the plastic-coated composite steel pipe body 1. A steel mesh 8 is bonded to the outer circumference of the plastic-coated composite steel pipe body 1, which strengthens the plastic-coated composite steel pipe body 1 and makes it more durable.

[0031] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-temperature resistant and freeze-resistant plastic-coated composite steel pipe, comprising a plastic-coated composite steel pipe body (1), characterized in that, The plastic-coated composite steel pipe body (1) includes a pipe body (7), a heat insulation layer (6) is fixedly connected to the outer circumference of the pipe body (7), a plastic coating layer (5) is provided on the outer circumference of the heat insulation layer (6), a heat insulation layer (4) is fixedly connected to the outer circumference of the plastic coating layer (5), and a wear-resistant layer (3) is coated on the outer circumference of the heat insulation layer (4).

2. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 1, characterized in that, The wear-resistant layer (3) is made of polytetrafluoroethylene.

3. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 1, characterized in that, The coating layer (5) is made of epoxy resin or polypropylene.

4. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 1, characterized in that, The insulation layer (6) is a polyurethane insulation material, a phenolic foam insulation material, or an aluminum foil material.

5. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 1, characterized in that, The insulation layer (4) is a rock wool layer.

6. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 1, characterized in that, The outer sides of both ends of the plastic-coated composite steel pipe body (1) are provided with threaded grooves (2).

7. The low-temperature resistant and freeze-resistant plastic-coated composite steel pipe according to claim 6, characterized in that, A steel mesh (8) is fixedly connected to the outer circumference of the plastic-coated composite steel pipe body (1).

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