Composite stainless steel pipe

Abstract

The utility model relates to the technical field of composite stainless steel pipes, and discloses a composite stainless steel pipe which comprises a steel pipe body, the steel pipe body is composed of a stainless steel outer pipe and a carbon structural steel inner pipe, a buffering mechanism is arranged between the stainless steel outer pipe and the carbon structural steel inner pipe, and a high-temperature-resistant mechanism is arranged on the surface of the stainless steel outer pipe. A heat preservation mechanism is arranged in the buffering mechanism. External impact and vibration are absorbed and dispersed through the buffering mechanism, the carbon structural steel inner pipe is protected against direct impact and damage, under the action of the high-temperature-resistant mechanism, the strength and toughness of the stainless steel composite pipe are guaranteed, the problems of breakage, deformation and the like are prevented, the service life of the stainless steel composite pipe is prolonged, safety of the stainless steel composite pipe is improved, and the service life of the stainless steel composite pipe is prolonged. The heat preservation mechanism can prevent liquid in the stainless steel composite pipe from being frozen.

Description

Technical Field

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

[0002] Composite stainless steel pipe, also known as stainless steel composite pipe, is a new material made by combining stainless steel and carbon structural steel through lossless pressure. This pipe not only inherits the corrosion resistance and wear resistance of stainless steel, as well as the excellent appearance, but also has the good bending strength and impact resistance of carbon steel.

[0003] The patent with the announcement number CN220647061U discloses a composite stainless steel pipe, including: an inner layer; a buffer layer, which is arranged on the outer side of the inner layer, the outer thread of the inner layer is wound with a steel wire, and the buffer layer wraps the steel wire; an outer layer, whose inner side is connected with a reinforcing strip extending along its length direction, and the reinforcing strip has a plurality of annular arrays along the axis of the outer layer, and the plurality of reinforcing strips all conflict with the buffer layer. The above technology adopts the matching design of the reinforcing strip and the steel wire, and when the outer layer is impacted by an external force, the buffer layer can buffer a part of the impact force transmitted by the reinforcing strip, and then when the reinforcing strip conflicts with the steel wire, the impact force can be dispersed on the contact surface between the buffer layer and the inner layer through the slight deformation caused by the force on one side of the steel wire, thereby protecting the inner layer, so that it is not easy to bend or deform when it is impacted by an external force.

[0004] However, the above technology still has the following problems:

[0005] When the stainless steel composite pipe is subjected to external impact and vibration, the inner carbon structural steel pipe will be directly impacted and damaged. At the same time, in a high temperature environment, the strength and toughness of the stainless steel composite pipe will decrease, and it will be prone to problems such as rupture and deformation. It may also cause the chromium at the stainless steel grain boundary to be depleted, reducing the corrosion resistance of the stainless steel, forming layered oxides, and forming oxides on the surface of the stainless steel pipe, reducing its corrosion resistance, thereby affecting the service life and safety of the pipe. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a composite stainless steel pipe to ensure the service life and safety of the pipe.

[0007] The utility model provides the following technical solutions: a composite stainless steel pipe, comprising a steel pipe body, the steel pipe body consisting of a stainless steel outer pipe and a carbon structural steel inner pipe, a buffer mechanism is arranged between the stainless steel outer pipe and the carbon structural steel inner pipe, the buffer mechanism comprises a first rubber ring fixed on the outer surface of the carbon structural steel inner pipe, the outer surface of the first rubber ring is provided with an arc groove, a second rubber ring fixed on the outer surface of the first rubber ring, a high temperature resistant mechanism is arranged on the surface of the stainless steel outer pipe, the high temperature resistant mechanism comprises a cylindrical aluminum silicate fiberboard arranged on the surface of the stainless steel outer pipe, a fixing plate is fixedly connected to the surface of the aluminum silicate fiberboard, and a heat preservation mechanism is arranged in the buffer mechanism.

[0008] Furthermore, a plurality of fixing blocks are fixedly connected to the inner surface of the fixing plate, and the fixing blocks penetrate the inner surface of the aluminum silicate fiberboard and are fixedly connected to the outer surface of the stainless steel outer tube.

[0009] Furthermore, the outer surface of the fixed plate is fixedly coated with a polyurethane coating.

[0010] Furthermore, a high temperature warning sticker is fixedly connected to the surface of the polyurethane paint coating.

[0011] Furthermore, the heat preservation mechanism comprises a heat preservation bag arranged in the arc-shaped groove, and the heat preservation bag is filled with inert gas.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] This type of composite stainless steel pipe can absorb and disperse external impacts and vibrations through the buffer layer, protect the carbon structural steel inner pipe from direct impact and damage, and under the action of the high temperature resistant mechanism, ensure the strength and toughness of the stainless steel composite pipe, prevent problems such as rupture and deformation, improve its service life and safety, and under low temperature conditions, the insulation mechanism can prevent the liquid inside the stainless steel composite pipe from freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure inside the steel pipe body of the utility model;

[0016] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model as a whole;

[0017] Figure 4 for Figure 2 Enlarged view of point A above.

[0018] In the figure: 1. Steel pipe body; 2. Stainless steel outer pipe; 3. Carbon structural steel inner pipe; 4. Buffer mechanism; 401. First rubber ring; 402. Arc groove; 403. Second rubber ring; 5. High temperature resistant mechanism; 501. Aluminum silicate fiberboard; 502. Fixed plate; 6. Insulation mechanism; 601. Insulation bag; 602. Inert gas; 7. Fixed block; 8. Polyurethane paint coating; 9. High temperature warning sticker. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figures 1 to 4 A composite stainless steel pipe comprises a steel pipe body 1, the steel pipe body 1 is composed of a stainless steel outer pipe 2 and a carbon structural steel inner pipe 3, a buffer mechanism 4 is arranged between the stainless steel outer pipe 2 and the carbon structural steel inner pipe 3, the buffer mechanism 4 comprises a first rubber ring 401 fixed on the outer surface of the carbon structural steel inner pipe 3, an arc groove 402 is opened on the outer surface of the first rubber ring 401, a second rubber ring 403 fixed on the outer surface of the first rubber ring 401, a high temperature resistant mechanism 5 is arranged on the surface of the stainless steel outer pipe 2, the high temperature resistant mechanism 5 comprises a cylindrical aluminum silicate fiber board 501 arranged on the surface of the stainless steel outer pipe 2, a fixing plate 502 is fixedly connected to the surface of the aluminum silicate fiber board 501, and a heat preservation mechanism 6 is arranged in the buffer mechanism 4.

[0021] The composite stainless steel pipe in the utility model is similar to the existing composite stainless steel pipe structure, such as the composite stainless steel pipe disclosed in the patent with announcement number CN220647061U. The main improvement of the utility model is that the buffer mechanism 4 can absorb and disperse external impact and vibration, protect the carbon structural steel inner pipe 3 from direct impact and damage, and under the action of the high temperature resistant mechanism 5, ensure the strength and toughness of the stainless steel composite pipe, prevent cracking and deformation, and improve its service life and safety. In the case of low temperature, the heat preservation mechanism 6 can prevent the liquid inside the stainless steel composite pipe from freezing. Figures 1 to 4As shown, in the composite stainless steel pipe of the utility model, when the steel pipe body 1 is subjected to external impact and vibration, the external impact and vibration are absorbed and dispersed by the buffer mechanism 4, so that the impact and vibration do not directly act on the carbon structural steel inner pipe 3, thereby protecting the carbon structural steel inner pipe 3; when the temperature around the steel pipe body 1 is high, the high temperature of the external environment is isolated under the action of the high temperature resistant mechanism 5 aluminum silicate fiberboard 501, and the aluminum silicate fiberboard 501 is protected by the fixing plate 502 to prevent the aluminum silicate fiberboard 501 from being damaged by direct contact with the external environment, thereby reducing its The high temperature resistance effect ensures the strength and toughness of the stainless steel composite pipe, prevents problems such as cracking and deformation, and under low temperature conditions, the inert gas 602 in the heat preservation mechanism 6 can insulate the carbon structural steel inner pipe 3 to prevent the liquid inside the stainless steel composite pipe from being frozen. By placing the heat preservation bag 601 filled with inert gas 602 into the arc groove 402, and then bonding and fixing the first rubber ring 401 and the second rubber ring 403, it is ensured that when the steel pipe body 1 is cut, the heat preservation mechanism 6 in other parts can still continue to perform the heat preservation work.

[0022] like Figure 1 or Figure 2 As shown, the outer surface of the fixing plate 502 is fixedly coated with a polyurethane coating 8.

[0023] Specifically, the polyurethane coating 8 has a good anti-slip effect, which makes it easier for workers to avoid slipping when installing the stainless steel composite pipe.

[0024] like Figure 1 As shown, a high temperature warning sticker 9 is fixedly connected to the surface of the polyurethane paint coating 8.

[0025] Specifically, the high temperature warning sticker 9 is used for the welding joints of the stainless steel composite pipe. The high temperature resistance of the high temperature warning sticker 9 is used to provide high temperature resistance protection for the welding joints of the stainless steel composite pipe. At the same time, the high temperature warning sticker 9 can change color in a high temperature environment, thereby reminding the staff to pay attention to the stainless steel composite pipe and prevent safety accidents.

[0026] like Figure 4 As shown, the heat preservation mechanism 6 includes a heat preservation bag 601 arranged in the arc groove 402, and the heat preservation bag 601 is filled with an inert gas 602.

[0027] Specifically, the heat preservation and insulation effect of the inert gas 602 is utilized to prevent the external environment temperature from being too low, which would cause the liquid in the carbon structural steel inner tube 3 to freeze.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite stainless steel pipe, comprising a steel pipe body (1), the steel pipe body (1) being composed of a stainless steel outer pipe (2) and a carbon structural steel inner pipe (3), characterized in that: A buffer mechanism (4) is provided between the stainless steel outer tube (2) and the carbon structural steel inner tube (3), the buffer mechanism (4) comprising a first rubber ring (401) fixed to the outer surface of the carbon structural steel inner tube (3), the outer surface of the first rubber ring (401) being provided with an arc groove (402), and a second rubber ring (403) fixed to the outer surface of the first rubber ring (401). A high temperature resistant mechanism (5) is provided on the surface of the stainless steel outer tube (2), the high temperature resistant mechanism (5) comprising a cylindrical aluminum silicate fiber board (501) provided on the surface of the stainless steel outer tube (2), the surface of the aluminum silicate fiber board (501) being fixedly connected to a fixing plate (502), and a heat preservation mechanism (6) is provided in the buffer mechanism (4).

2. A composite stainless steel pipe according to claim 1, characterized in that: The inner surface of the fixed plate (502) is fixedly connected to a plurality of fixed blocks (7), and the fixed blocks (7) penetrate the inner surface of the aluminum silicate fiber board (501) and are fixedly connected to the outer surface of the stainless steel outer tube (2).

3. A composite stainless steel pipe according to claim 2, characterized in that: The outer surface of the fixed plate (502) is fixedly coated with a polyurethane coating (8).

4. A composite stainless steel pipe according to claim 3, characterized in that: A high temperature warning sticker (9) is fixedly connected to the surface of the polyurethane paint coating (8).

5. The composite stainless steel pipe according to claim 1, characterized in that: The heat-insulating mechanism (6) comprises a heat-insulating bag (601) arranged in the arc-shaped groove (402), and the heat-insulating bag (601) is filled with an inert gas (602).

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