Pipeline anticorrosion and heat preservation structure

Abstract

The utility model discloses a pipeline anticorrosive heat preservation structure relates to pipeline technical field, including the pipe body, the outer wall of pipe body is equipped with pipe clamp mechanism, the pipe body includes work inner tube, anticorrosive layer, heat preservation layer, reflection heat insulating layer and protective layer, the utility model discloses the high temperature type epoxy powder coating of anticorrosive layer is coated in work inner tube outer surface, can effectively resist high temperature steam erosion, pipe body oxidation and outside corrosive medium erosion, cooperate heat preservation layer and reflection heat insulating layer can greatly block high temperature steam heat outward conduction, reduce main heat loss, maintain the medium temperature stability in the pipe, reflection heat insulating layer adopts aluminium foil glass cloth and fixes in the outer surface of heat preservation layer, further weakens heat loss through the principle of reflection heat radiation, makes the whole thermal efficiency promotion, makes up the insufficient block of simple heat preservation layer to radiant heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a pipeline anti-corrosion and heat insulation structure. Background Technology

[0002] High-temperature steam pipelines, as core infrastructure in energy transmission, chemical production, power and heat industries, undertake the task of transporting high-temperature steam with media temperatures ranging from 100℃ to 600℃. Their operational stability is directly related to energy utilization efficiency, production safety, and system economy. In the process systems of thermal power, nuclear power cogeneration projects, and refining and chemical enterprises, the service environment of high-temperature steam pipelines is particularly harsh: they must not only withstand the thermal stress and material aging caused by continuous high temperatures, but also resist the erosion of corrosive media such as soil, industrial atmosphere, and condensate. At the same time, they need to control heat loss through effective insulation to reduce energy consumption. Therefore, the synergistic protection of corrosion prevention and insulation has become the core requirement for ensuring the long-term reliable operation of pipelines.

[0003] However, in existing technologies, traditional pipeline insulation often uses a single inorganic or organic material, which makes it difficult to balance high-temperature adaptability and comprehensive protection performance. Furthermore, the anti-corrosion treatment for pipelines often uses ordinary epoxy coatings, which are prone to peeling at temperatures above 200°C, forming an interface gap with the subsequent insulation layer and failing to resist high-temperature steam erosion and oxidation corrosion. Utility Model Content

[0004] The purpose of this utility model is to solve the problems that traditional pipeline insulation often uses a single inorganic or organic material, which makes it difficult to balance high-temperature adaptability and comprehensive protection performance. In addition, the anti-corrosion treatment of pipelines often uses ordinary epoxy coatings, which are prone to peeling at high temperatures above 200°C, forming an interface gap with the subsequent insulation layer and failing to resist high-temperature steam erosion and oxidation corrosion. Therefore, a pipeline anti-corrosion and insulation structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipeline anti-corrosion and heat insulation structure, comprising a pipe body, wherein a pipe clamping mechanism is sleeved on the outer wall of the pipe body, the pipe body comprising a working inner pipe, an anti-corrosion layer, a heat insulation layer, a reflective heat insulation layer and a protective layer, wherein the anti-corrosion layer is coated on the outer surface of the working inner pipe, the heat insulation layer is fixedly connected to the outer surface of the anti-corrosion layer, the reflective heat insulation layer is fixedly connected to the outer surface of the heat insulation layer, and the protective layer is fixedly sleeved on the outer wall of the reflective heat insulation layer.

[0006] Preferably, the insulation layer includes a ceramic fiber felt layer, sealing cotton, and a rock wool pipe shell. The ceramic fiber felt layer is sleeved on the outside of the rock wool pipe shell, and the sealing cotton is disposed between the outer wall of the rock wool pipe shell and the inner wall of the ceramic fiber felt layer.

[0007] Preferably, the pipe clamping mechanism includes clamping plates and a support base, with the bottom ends of the two clamping plates fixedly connected to the top end of the support base.

[0008] Preferably, a fastening hole is provided through the top outer wall of the clamping plate.

[0009] Preferably, a connecting hole is provided through the center of the bottom surface of the support base.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the anti-corrosion layer is made of high-temperature epoxy powder coating applied to the outer surface of the inner working pipe, which can effectively resist the erosion of high-temperature steam, pipe oxidation and external corrosive media. Combined with the insulation layer and reflective heat insulation layer, it can significantly block the heat conduction of high-temperature steam to the outside, reduce the main heat loss, and maintain the temperature of the medium inside the pipe. The reflective heat insulation layer is made of aluminum foil glass cloth fixed to the outer surface of the insulation layer. Through the principle of reflecting heat radiation, it further reduces heat loss, improves the overall thermal efficiency, and makes up for the insufficient blocking of radiation heat transfer by the simple insulation layer.

[0012] 2. In this utility model, the insulation layer adopts a composite sub-layer design of ceramic fiber felt layer, sealing cotton and rock wool pipe shell. The rock wool pipe shell is used as the main insulation layer to achieve basic heat insulation. The excellent high temperature resistance of ceramic fiber felt layer is used to improve the overall high temperature resistance limit of the insulation layer, which is suitable for medium and high temperature fluctuation scenarios. The sealing cotton is filled between rock wool pipe shell and ceramic fiber felt layer to fill the gap between the two layers, avoid the formation of thermal bridges in the gaps and avoid local heat loss. At the same time, it buffers the thermal expansion difference between the two layers of materials and prevents cracking between the layers at high temperature. Attached Figure Description

[0013] Figure 1 This utility model provides a three-dimensional structural diagram of a pipeline anti-corrosion and heat insulation structure;

[0014] Figure 2 This utility model provides a cross-sectional view of the internal structure of a pipe body for pipeline corrosion protection and heat insulation.

[0015] Figure 3 This utility model provides a cross-sectional structural diagram of a pipeline anti-corrosion and heat insulation structure.

[0016] Legend: 1. Pipe body; 11. Working inner pipe; 12. Anti-corrosion layer; 13. Insulation layer; 131. Ceramic fiber felt layer; 132. Sealing cotton; 133. Rock wool pipe shell; 14. Reflective heat insulation layer; 15. Protective layer; 2. Pipe clamp mechanism; 21. Clamp plate; 22. Support base; 23. Connection hole; 24. Fastening hole. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides a pipeline anti-corrosion and heat insulation structure, including a pipe body 1, with a pipe clamping mechanism 2 sleeved on the outer wall of the pipe body 1. The pipe body 1 includes a working inner pipe 11, an anti-corrosion layer 12, a heat insulation layer 13, a reflective heat insulation layer 14, and a protective layer 15. The anti-corrosion layer 12 is coated on the outer surface of the working inner pipe 11, the heat insulation layer 13 is fixedly connected to the outer surface of the anti-corrosion layer 12, the reflective heat insulation layer 14 is fixedly connected to the outer surface of the heat insulation layer 13, and the protective layer 15 is fixedly sleeved on the outer wall of the reflective heat insulation layer 14.

[0020] The specific settings and functions of this embodiment are described below. The inner working pipe 11, as the core carrier for high-temperature steam transport, is made of 316L stainless steel, possessing excellent high-temperature strength and oxidation resistance. It can stably withstand steam pressure and temperature loads, providing a fundamental load-bearing structure and ensuring media transport. The anti-corrosion layer 12 is coated with a high-temperature epoxy powder coating on the outer surface of the inner working pipe 11, effectively resisting high-temperature steam erosion, pipe oxidation, and external corrosive media. The insulation layer 13 uses a composite high-temperature resistant insulation material, which can significantly block the outward conduction of high-temperature steam heat, reduce main heat loss, maintain stable internal medium temperature, and reflect heat. The insulation layer 14 is made of aluminum foil and glass cloth, which is fixed to the outer surface of the insulation layer 13. It further reduces heat loss by reflecting heat radiation, thereby improving the overall thermal efficiency and making up for the insufficient obstruction of radiation heat transfer by the simple insulation layer. The protective layer 15 is made of fiberglass and fixed to the outer wall of the reflective insulation layer 14. It is treated with interlocking seal and high temperature resistant sealant to resist mechanical impact, rainwater infiltration and environmental erosion, and prevent the internal insulation and anti-corrosion layers from failing due to external damage. The pipe clamping mechanism 2 is used for the fixed installation of the pipe body 1. Its clamping force is adapted to the expansion of the pipe body under high temperature conditions, so as to avoid stress damage to the structure of each layer of the pipe body 1 during installation and fixation, and ensure the overall structural stability.

[0021] Example 2: Figure 1 - Figure 3As shown, the insulation layer 13 includes a ceramic fiber felt layer 131, a sealing cotton 132, and a rock wool pipe shell 133. The ceramic fiber felt layer 131 is fitted over the outside of the rock wool pipe shell 133, and the sealing cotton 132 is disposed between the outer wall of the rock wool pipe shell 133 and the inner wall of the ceramic fiber felt layer 131. The pipe clamp mechanism 2 includes clamping plates 21 and a support base 22. The bottom ends of the two clamping plates 21 are fixedly connected to the top end of the support base 22. A fastening hole 24 is provided through the outer wall of the top end of the clamping plate 21, and a connecting hole 23 is provided through the center of the bottom surface of the support base 22.

[0022] The overall effect of this embodiment is that the insulation layer 13 adopts a composite sub-layer design of ceramic fiber felt layer 131, sealing cotton 132, and rock wool pipe shell 133. Among them, rock wool pipe shell 133 serves as the main insulation layer, relying on its fireproof and temperature-resistant properties to achieve basic heat insulation; the ceramic fiber felt layer 131 is fitted on the outside, utilizing its excellent high-temperature resistance to improve the overall high-temperature resistance limit of the insulation layer 13, adapting to medium and high temperature fluctuation scenarios; the sealing cotton 132 is filled between the rock wool pipe shell 133 and the ceramic fiber felt layer 131, which can fill the gap between the two layers and prevent the formation of air bubbles at the gap. Thermal bridging causes localized heat loss and buffers the thermal expansion difference between the two layers of materials, preventing interlayer cracking at high temperatures. Two symmetrically arranged clamping plates 21 are welded and fixed to the top of the support base 22 to form a U-shaped clamping structure, which can be adapted to pipe bodies 1 of different diameters. The fastening hole 24 penetrating the top is locked with high-temperature bolts, and the clamping force can be finely adjusted according to the thermal expansion characteristics of the pipeline to prevent loosening caused by thermal expansion and contraction. The connecting hole 23 at the center of the bottom surface of the support base 22 can be fixed to the bracket with expansion bolts to ensure the straightness of multi-section pipeline installation and reduce stress concentration at the pipeline interface.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pipeline corrosion protection and heat insulation structure, characterized in that: The device includes a pipe body (1), and a pipe clamping mechanism (2) is fitted on the outer wall of the pipe body (1). The pipe body (1) includes a working inner pipe (11), an anti-corrosion layer (12), a heat insulation layer (13), a reflective heat insulation layer (14), and a protective layer (15). The anti-corrosion layer (12) is coated on the outer surface of the working inner pipe (11). The heat insulation layer (13) is fixedly connected to the outer surface of the anti-corrosion layer (12). The reflective heat insulation layer (14) is fixedly connected to the outer surface of the heat insulation layer (13). The protective layer (15) is fixedly fitted on the outer wall of the reflective heat insulation layer (14).

2. The pipeline anti-corrosion and heat insulation structure according to claim 1, characterized in that: The insulation layer (13) includes a ceramic fiber felt layer (131), sealing cotton (132) and a rock wool pipe shell (133). The ceramic fiber felt layer (131) is sleeved on the outside of the rock wool pipe shell (133), and the sealing cotton (132) is disposed between the outer wall of the rock wool pipe shell (133) and the inner wall of the ceramic fiber felt layer (131).

3. The pipeline anti-corrosion and heat insulation structure according to claim 1, characterized in that: The pipe clamping mechanism (2) includes clamping plates (21) and support base (22), with the bottom ends of the two clamping plates (21) fixedly connected to the top end of the support base (22).

4. The pipeline anti-corrosion and heat insulation structure according to claim 3, characterized in that: The top outer wall of the clamp (21) is provided with a fastening hole (24).

5. The pipeline anti-corrosion and heat insulation structure according to claim 4, characterized in that: A connecting hole (23) is provided through the center of the bottom surface of the support base (22).

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