High-temperature-resistant and corrosion-resistant stainless steel welded pipe

Abstract

The utility model relates to the technical field of stainless steel welded pipes, in particular to a high-temperature-resistant and corrosion-resistant stainless steel welded pipe. According to the technical scheme, the stainless steel welding pipe comprises a protective rubber sleeve, a stainless steel welding pipe body, a heat insulation lining and a corrosion-resistant coating, the heat insulation lining is fixedly installed on the inner wall of the stainless steel welding pipe body, the corrosion-resistant coating is arranged on the inner wall of the heat insulation lining, and the heat insulation coating is arranged on the outer surface of the stainless steel welding pipe body. The outer surface of the stainless steel welded pipe body is fixedly sleeved with a protective rubber sleeve. The corrosion resistance and the high temperature resistance of the stainless steel pipe can be improved, so that the stainless steel pipe can be suitable for special fields such as chemical factories, the service life of the stainless steel pipe is prolonged, the production cost is reduced, and the subsequent pipeline maintenance work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel welded pipes, and particularly relates to a high-temperature resistant and corrosion-resistant stainless steel welded pipe. Background Technique

[0002] Stainless steel welded pipes refer to pipes formed by welding through multiple processes using rolled plates or steel strips. Their production process is simple, production efficiency is high, equipment investment is small, and their strength is generally lower than that of seamless steel pipes of the same type. However, with the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technologies, the weld quality has been continuously improved, the variety specifications of stainless steel welded pipes have increased day by day, and they have replaced seamless steel pipes in more and more fields, especially in pipes for heat exchange equipment, decorative pipes, medium and low-pressure fluid pipes, etc.

[0003] At present, the high-temperature resistance and corrosion resistance of stainless steel welded pipes are poor and not suitable for use in special places such as chemical factories. Therefore, we propose a high-temperature resistant and corrosion-resistant stainless steel welded pipe. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-temperature resistant and corrosion-resistant stainless steel welded pipe, which has the advantages of being able to improve the corrosion resistance and high-temperature resistance of the stainless steel pipe, making it applicable to special fields such as chemical factories, extending the service life of the stainless steel welded pipe, reducing production costs, and reducing subsequent pipeline maintenance work, and solves the problem that the current stainless steel welded pipe has poor high-temperature resistance and corrosion resistance and is not suitable for use in special places such as chemical factories.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a high-temperature resistant and corrosion-resistant stainless steel welded pipe, including a protective rubber sleeve, a stainless steel welded pipe body, a heat insulation lining, and a corrosion-resistant coating. The heat insulation lining is fixedly installed on the inner wall of the stainless steel welded pipe body, the corrosion-resistant coating is arranged on the inner wall of the heat insulation lining, the heat insulation coating is arranged on the outer surface of the stainless steel welded pipe body, and the protective rubber sleeve is fixedly sleeved on the outer surface of the stainless steel welded pipe body.

[0006] Preferably, a spiral reinforcing sheet is arranged inside the protective rubber sleeve, and the spiral reinforcing sheet and the protective rubber sleeve are integrally injection molded. Then the spiral reinforcing sheet spirally winds around the outer surface of the stainless steel welded pipe body, thereby improving the strength of the stainless steel welded pipe body.

[0007] Preferably, an anti-aging coating is arranged on the outer surface of the protective rubber sleeve, which can prevent the protective rubber sleeve from aging quickly under wind, sun and rain, and extend the service life of the protective rubber sleeve.

[0008] Preferably, a number of limiting protrusions are equidistantly arranged in a circular array on the outer surface of the heat-insulating inner lining, and a number of limiting grooves are equidistantly arranged in a circular array on the inner wall of the stainless steel welded pipe body, and the limiting protrusions are located inside the limiting grooves, which improves the stability of the heat-insulating inner lining inside the stainless steel welded pipe body.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. By providing the stainless steel welded pipe body, the heat-insulating inner lining, the corrosion-resistant coating, the rubber hose and the heat-insulating coating, the present utility model achieves the effects of improving the corrosion resistance and high-temperature resistance of the stainless steel pipe, enabling it to be applicable to special fields such as chemical factories, extending the service life of the stainless steel welded pipe, reducing production costs and reducing subsequent pipeline maintenance work. The heat of the flowing medium inside the stainless steel welded pipe body is blocked by the heat-insulating inner lining, preventing a large amount of heat from being transferred to the stainless steel welded pipe body, so that the stainless steel welded pipe body is deformed due to high temperature. The corrosion-resistant coating on the inner wall of the heat-insulating inner lining can prevent the flowing medium inside the stainless steel welded pipe body from corroding the heat-insulating inner lining, while the heat-insulating coating hinders the heat transfer between the stainless steel welded pipe body and the outside, and the protective rubber sleeve protects the heat-insulating coating, preventing the heat-insulating coating from being worn. Moreover, when the stainless steel welded pipe body is impacted by collision, the protective rubber sleeve also has a certain buffering effect, protecting the stainless steel welded pipe body and preventing it from deforming.

[0011] 2. By providing the spiral reinforcing sheet, the present utility model achieves the effect of improving the overall strength of the stainless steel welded pipe. The spiral reinforcing sheet and the protective rubber sleeve are integrally injection-molded, and the spiral reinforcing sheet is spirally wound around the outer surface of the stainless steel welded pipe body, thereby improving the strength of the stainless steel welded pipe body.

[0012] 3. By providing the anti-aging coating, the present utility model can prevent the protective rubber sleeve from aging rapidly under wind and sun, and extend the service life of the protective rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0014] Figure 2 is a main sectional structure schematic diagram of the present utility model;

[0015] Figure 3 is a top view structure schematic diagram of the present utility model.

[0016] Reference numerals: 1, protective rubber sleeve; 2, stainless steel welded pipe body; 3, limiting groove; 4, limiting protrusion; 5, heat-insulating inner lining; 6, corrosion-resistant coating; 7, heat-insulating coating; 8, spiral reinforcing sheet; 9, anti-aging coating. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Embodiment 1

[0019] As Figures 1 - 3 shown, a high-temperature and corrosion-resistant stainless steel welded pipe proposed by the present utility model includes a protective rubber sleeve 1, a stainless steel welded pipe main body 2, a heat-insulating inner lining 5, and a corrosion-resistant coating 6. The heat-insulating inner lining 5 is fixedly installed on the inner wall of the stainless steel welded pipe main body 2 and is made of a heat-insulating material, which is used to block the heat transfer between the flowing medium inside the stainless steel welded pipe main body 2 and the stainless steel welded pipe main body 2. A number of limiting protrusions 4 are equidistantly arranged in a circumferential array on the outer surface of the heat-insulating inner lining 5. A number of limiting grooves 3 are equidistantly arranged in a circumferential array on the inner wall of the stainless steel welded pipe main body 2, and the limiting protrusions 4 are located inside the limiting grooves 3. The limiting protrusions 4 and the limiting grooves 3 can improve the stability of the heat-insulating inner lining 5 inside the stainless steel welded pipe main body 2. A corrosion-resistant coating 6 is provided on the inner wall of the heat-insulating inner lining 5, and the corrosion-resistant coating 6 can prevent the flowing medium inside the stainless steel welded pipe main body 2 from corroding the heat-insulating inner lining 5. A heat-insulating coating 7 is provided on the outer surface of the stainless steel welded pipe main body 2, and the heat-insulating coating 7 is used to block the heat transfer between the stainless steel welded pipe main body 2 and the external environment. A protective rubber sleeve 1 is fixedly sleeved on the outer surface of the stainless steel welded pipe main body 2. The protective rubber sleeve 1 protects the heat-insulating coating 7 from being worn, and when the stainless steel welded pipe main body 2 is subjected to collision and impact, the protective rubber sleeve 1 also has a certain buffering effect, protecting the stainless steel welded pipe main body 2 from deformation.

[0020] When the present utility model is in use, the heat of the flowing medium inside the stainless steel welded pipe main body 2 is blocked by the heat-insulating inner lining 5, avoiding a large amount of heat being transferred to the stainless steel welded pipe main body 2, so that the stainless steel welded pipe main body 2 is deformed due to high temperature. The corrosion-resistant coating 6 on the inner wall of the heat-insulating inner lining 5 can prevent the flowing medium inside the stainless steel welded pipe main body 2 from corroding the heat-insulating inner lining 5, and the heat-insulating coating 7 blocks the heat transfer between the stainless steel welded pipe main body 2 and the outside world. The protective rubber sleeve 1 protects the heat-insulating coating 7 from being worn, and when the stainless steel welded pipe main body 2 is subjected to collision and impact, the protective rubber sleeve 1 also has a certain buffering effect, protecting the stainless steel welded pipe main body 2 from deformation.

[0021] Embodiment 2

[0022] As Figures 1 - 3 shown, a high-temperature and corrosion-resistant stainless steel welded pipe proposed by the present utility model, compared with Embodiment 1, this embodiment further includes a spiral reinforcing sheet 8 arranged inside the protective rubber sleeve 1. The spiral reinforcing sheet 8 and the protective rubber sleeve 1 are integrally injection-molded. An anti-aging coating 9 is provided on the outer surface of the protective rubber sleeve 1, and the anti-aging coating 9 prevents the protective rubber sleeve 1 from aging rapidly under wind, sun and rain, and extends the service life of the protective rubber sleeve 1.

[0023] In this embodiment, the spiral reinforcing sheet 8 inside the protective rubber sleeve 1 is wound around the outer surface of the stainless steel welded pipe body 2 in a spiral winding manner, thereby improving the strength of the stainless steel welded pipe body 2.

[0024] The above specific embodiments are merely several preferred embodiments of the present utility model. Based on the technical solution of the present utility model and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high temperature resistant and corrosion resistant stainless steel welded pipe, comprising a protective rubber sleeve (1), a stainless steel welded pipe body (2), a heat insulating lining (5) and a corrosion resistant coating (6), characterized in that: The inner wall of the stainless steel welded pipe body (2) is fixedly mounted with a heat insulating lining (5), the inner wall of the heat insulating lining (5) is provided with a corrosion resistant coating (6), the outer surface of the stainless steel welded pipe body (2) is provided with a heat insulating coating (7), and the outer surface of the stainless steel welded pipe body (2) is fixedly sleeved with a protective rubber sleeve (1).

2. The high temperature resistant and corrosion resistant stainless steel welded pipe according to claim 1, characterized in that: A spiral reinforcement sheet (8) is arranged inside the protective rubber sleeve (1).

3. The high temperature resistant and corrosion resistant stainless steel welded pipe according to claim 2, characterized in that: The outer surface of the protective rubber sleeve (1) is provided with an anti-aging coating (9).

4. The high temperature resistant and corrosion resistant stainless steel welded pipe according to claim 1, characterized in that: The outer surface of the heat-insulating lining (5) is provided with a plurality of limiting protrusions (4) at equal intervals in a circular array, and the inner wall of the stainless steel welded pipe body (2) is provided with a plurality of limiting grooves (3) at equal intervals in a circular array, and the limiting protrusions (4) are located inside the limiting grooves (3).

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