Seamless steel tube with heat insulation function

Abstract

The utility model relates to the technical field of steel pipes, and discloses a seamless steel pipe with a heat insulation function, which comprises a steel pipe body, the steel pipe body comprises an inner-layer pipe, the inner-layer pipe is made of metal, the inner wall of the inner-layer pipe is smooth and seamless, the outer wall of the inner-layer pipe is fixedly connected with a central-layer pipe, and the outer wall of the central-layer pipe is fixedly connected with an outer-layer pipe. And the central layer pipe comprises a plurality of heat insulation strips which are spirally and fixedly connected to the outer wall of the inner layer pipe at equal intervals. The structural design of the composite heat insulation pipe is adopted, the inner layer is the metal pipe to guarantee strength, the heat insulation pipe layer is wrapped on the outer layer and comprises the heat insulation strips which are spirally arranged on the outer wall of the metal pipe on the inner layer at equal intervals, and the heat insulation strips are made of heat insulation materials, namely glass fiber materials, and the heat insulation materials of the heat insulation pipe layer are low in heat conductivity coefficient. The integral seamless steel pipe can obviously reduce heat conduction and reduce heat exchange between a medium and the pipe wall while ensuring the integral strength.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe technology, specifically to a seamless steel pipe with heat insulation function. Background Technology

[0002] Seamless steel pipe is a long strip of steel with a hollow cross-section and no seams around its perimeter. It is made from a whole round steel bar through piercing or rolling processes. It has high tensile and compressive strength and can withstand working in high pressure and high temperature environments. Different anti-corrosion materials can be selected according to different application scenarios, such as hot-dip galvanizing and hot-dip aluminizing, which can extend its service life. Its specifications are wide-ranging, with a maximum diameter of 650mm and a minimum diameter of 0.3mm, which can meet the needs of various occasions.

[0003] The following problems still exist in the use of existing seamless steel pipes: Seamless steel pipes are widely used in industrial and construction fields, but their thermal insulation performance is usually weak. This is determined by the material characteristics (high thermal conductivity of metals). That is, seamless steel pipes are mostly made of metals such as carbon steel and stainless steel, which have high thermal conductivity (such as carbon steel with a thermal conductivity of about 50 W / m·K and stainless steel with a thermal conductivity of about 16 W / m·K). Heat is easily transferred quickly through the pipe wall, resulting in the loss of temperature of the medium inside the pipe or the intrusion of external heat. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a seamless steel pipe with heat insulation function, solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a seamless steel pipe with heat insulation function, comprising a steel pipe body, wherein the steel pipe body includes an inner layer pipe, the inner layer pipe is made of metal and has a smooth and seamless inner wall, a central layer pipe is fixedly connected to the outer wall of the inner layer pipe, and an outer layer pipe is fixedly connected to the outer wall of the central layer pipe, wherein the central layer pipe includes a plurality of heat insulation strips fixedly connected to the outer wall of the inner layer pipe in an equidistant spiral shape, the heat insulation strips are made of glass fiber material, and a heat insulation central hole is opened between the center positions of the front and rear ends of the heat insulation strips.

[0008] As a further embodiment of this utility model: the outer tube includes an outer metal tube body fixedly connected to the outside of multiple heat insulation strips. The outer metal tube body is coated with a heat insulation coating, which is a nano heat insulation coating and is applied to the surface of the outer metal tube body wall. The outer wall of the outer tube is provided with multiple grooves at equal angles. The inner wall of the grooves is fixedly connected with multiple reinforcing blocks at equal intervals from front to back.

[0009] As a further improvement of this utility model: multiple weight-reducing holes are provided at equal angles between the front and rear side walls of the outer tube, and the multiple weight-reducing holes and multiple grooves are arranged in an alternating pattern at equal angles.

[0010] As a further embodiment of this utility model: the steel pipe body is provided with connecting components at both ends, the connecting components include connecting flanges fixedly connected at both ends of the steel pipe body, the inner diameter of the center hole of the connecting flange is the same as the inner diameter of the inner layer pipe, and multiple connecting holes are opened at equal angles between the front and rear side walls of the connecting flange.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, by adopting a composite heat-insulating pipe structure design, the inner layer is a metal pipe to ensure strength, and the outer layer is wrapped with a heat-insulating pipe layer, which includes heat-insulating strips arranged in an equidistant spiral on the outer wall of the inner metal pipe. All of them are heat-insulating materials, namely glass fiber materials. The heat-insulating material of the heat-insulating pipe layer has a low thermal conductivity. The seamless steel pipe as a whole can significantly reduce heat conduction and reduce heat exchange between the medium and the pipe wall while ensuring overall strength.

[0013] 2. In this utility model, an innovative external insulation technology is adopted. The outer part is a metal pipe layer, which is sprayed with an insulation coating. The coating is a nano-insulation coating, which is applied to the surface of the pipe wall to form a nano-level heat insulation layer. Heat transfer is reduced through reflection, radiation and blocking. At the same time, multiple grooves are opened in the outer wall at equal angles, and multiple reinforcing blocks are fixedly connected to the inner wall of the grooves, which further ensures the overall strength and heat insulation performance. Attached Figure Description

[0014] Figure 1 This is a perspective view of the entire utility model;

[0015] Figure 2 This is a perspective view of the steel pipe body of this utility model;

[0016] Figure 3 This is a perspective view of the inner tube and outer tube of this utility model;

[0017] Figure 4 This is a three-dimensional view of the central layer tube of this utility model.

[0018] In the diagram: 1. Steel pipe body; 2. Connecting flange; 3. Connecting hole; 11. Inner layer pipe; 12. Central layer pipe; 13. Outer layer pipe; 121. Insulation strip; 122. Insulation center hole; 131. Outer metal pipe body; 132. Groove; 133. Weight reduction hole; 134. Reinforcing block. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1-4 In this embodiment of the utility model, a seamless steel pipe with heat insulation function includes a steel pipe body 1, which includes an inner pipe 11. The inner pipe 11 is made of metal and has a smooth, seamless inner wall. A central pipe 12 is fixedly connected to the outer wall of the inner pipe 11, and an outer pipe 13 is fixedly connected to the outer wall of the central pipe 12. The central pipe 12 includes multiple heat insulation strips 121 that are fixedly connected to the outer wall of the inner pipe 11 in an equidistant spiral shape. The heat insulation strips 121 are made of glass fiber material, and a heat insulation hole 122 is opened between the center positions of the front and rear ends of the heat insulation strips 121. The whole adopts a composite heat insulation pipe structure design. Its inner layer is a metal pipe to ensure strength, and the outer layer is wrapped with a heat insulation pipe layer, which includes heat insulation strips 121 that are equidistantly spirally arranged on the outer wall of the inner metal pipe. They are all heat insulation materials, namely glass fiber material. The heat insulation material of the heat insulation pipe layer has a low thermal conductivity. The whole seamless steel pipe can significantly reduce heat conduction and reduce the heat exchange between the medium and the pipe wall while ensuring the overall strength.

[0023] The outer tube 13 includes an outer metal tube 131 fixedly connected to the outside of multiple insulation strips 121. The outer metal tube 131 is coated with a heat-insulating coating, which is a nano-insulating coating and is applied to the surface of the outer metal tube 131. The outer wall of the outer tube 13 has multiple grooves 132 at equal angles. The inner wall of the grooves 132 is fixedly connected with multiple reinforcing blocks 134 at equal intervals from front to back. The whole adopts an innovative external heat insulation technology. Its outer part is a metal tube layer, and its outer part is coated with a heat-insulating coating, which is a nano-insulating coating, applied to the surface of the tube wall to form a nano-level heat insulation layer. It reduces heat transfer through reflection, radiation and blocking. At the same time, the outer wall has multiple grooves 132 at equal angles, and the inner wall of the grooves 132 is fixedly connected with multiple reinforcing blocks 134, which further ensures the overall strength and heat insulation performance.

[0024] Multiple weight-reducing holes 133 are provided at equal angles between the front and rear side walls of the outer tube 13. The multiple weight-reducing holes 133 and multiple grooves 132 are arranged at equal angles and staggered. The multiple weight-reducing holes 133 play a role in reducing the weight of the entire seamless steel tube.

[0025] The steel pipe body 1 is provided with connecting components at both ends. The connecting components include connecting flanges 2 that are fixedly connected at both ends of the steel pipe body 1. The inner diameter of the center hole of the connecting flange 2 is the same as the inner diameter of the inner tube 11. Multiple connecting holes 3 are opened at equal angles between the front and rear side walls of the connecting flange 2. The seamless steel pipe can be connected and installed by the connecting components through the connecting holes 3 on its two connecting flanges 2.

[0026] The working principle of this utility model is as follows: The seamless steel pipe can be connected and installed through the connection holes 3 on its two connecting flanges 2 with the connecting components. The whole adopts a composite heat-insulating pipe structure design. Its inner layer is a metal pipe to ensure strength, and the outer layer is wrapped with a heat-insulating pipe layer, which includes heat-insulating strips 121 arranged in an equidistant spiral on the outer wall of the inner metal pipe. They are all heat-insulating materials, namely glass fiber materials. The heat-insulating material of the heat-insulating pipe layer has a low thermal conductivity. The seamless steel pipe can significantly reduce heat conduction and reduce heat exchange between the medium and the pipe wall while ensuring the overall strength. In addition, the whole adopts an innovative external heat insulation technology. Its outer metal pipe layer is sprayed with a heat-insulating coating, which is a nano heat-insulating coating, coated on the surface of the pipe wall to form a nano-level heat insulation layer. It reduces heat transfer through reflection, radiation and blocking. At the same time, multiple grooves 132 are opened in annular equiangular shape on its outer wall, and multiple reinforcing blocks 134 are fixedly connected to the inner wall of the grooves 132, further ensuring the overall strength and heat insulation performance.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A seamless steel pipe with heat insulation function, comprising a steel pipe body (1), wherein connecting components are provided at both ends of the steel pipe body (1); Its features are: The steel pipe body (1) includes an inner tube (11), which is made of metal and has a smooth and seamless inner wall. A central tube (12) is fixedly connected to the outer wall of the inner tube (11), and an outer tube (13) is fixedly connected to the outer wall of the central tube (12). The central tube (12) includes multiple heat insulation strips (121) that are fixedly connected to the outer wall of the inner tube (11) in an equidistant spiral shape. The heat insulation strips (121) are made of glass fiber material, and a heat insulation hole (122) is provided between the center positions of the front and rear ends of the heat insulation strips (121). The outer tube (13) includes an outer metal tube (131) fixedly connected to the outside of multiple heat insulation strips (121). The outer metal tube (131) is coated with a heat insulation coating, which is a nano heat insulation coating and is applied to the surface of the outer metal tube (131) wall.

2. A seamless steel pipe with heat insulation function according to claim 1, characterized in that: The outer wall of the outer tube (13) has multiple grooves (132) at equal angles.

3. A seamless steel pipe with heat insulation function according to claim 2, characterized in that: The inner wall of the groove (132) is fixedly connected with multiple reinforcing blocks (134) at equal intervals from front to back.

4. A seamless steel pipe with heat insulation function according to claim 1, characterized in that: The outer tube (13) has multiple weight-reducing holes (133) at equal angles between its front and rear side walls.

5. A seamless steel pipe with heat insulation function according to claim 4, characterized in that: The multiple weight-reducing holes (133) and multiple grooves (132) are arranged in an alternating pattern at equal angles.

6. A seamless steel pipe with heat insulation function according to claim 1, characterized in that: The connecting assembly includes connecting flanges (2) that are fixedly connected to the front and rear ends of the steel pipe body (1).

7. A seamless steel pipe with heat insulation function according to claim 6, characterized in that: The inner diameter of the center hole of the connecting flange (2) is the same as the inner diameter of the inner tube (11), and multiple connecting holes (3) are provided at equal angles between the front and rear side walls of the connecting flange (2).

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