Heat preservation and insulation device for heating medium pipeline

Abstract

The utility model relates to the technical field of pipeline heat preservation, in particular to a heat preservation and insulation device for a heating medium pipeline, which comprises a heat preservation combination layer wrapped on the heating medium pipeline, the thickness of the heat preservation combination layer is 10-30mm, and the heat preservation combination layer is provided with three layers of heat preservation materials and comprises an aerogel layer, a bonding layer arranged outside the heat preservation combination layer and a heat insulation reflecting layer wrapped outside the bonding layer. An air cavity is formed between the heat-insulating reflecting layer and the protective layer and is obtained by arranging an annular wavy supporting part between the heat-insulating reflecting layer and the protective layer for supporting, and a heat-insulating coating is arranged on the inner surface of the protective layer. The multiple layers of light heat preservation materials are wrapped layer by layer to serve as the heat preservation combination layer, the heat preservation effect is improved, and the heat preservation performance is further improved through the air cavity formed between the heat insulation reflection layer and the protection layer.

Description

Technical Field

[0001] This utility model relates to the field of pipeline insulation technology, specifically to a heat insulation device for heat transfer pipelines. Background Technology

[0002] As a crucial system for transporting heat transfer media, heat transfer media pipelines play a vital role in both industrial production and daily life. Heat transfer media, including hot water, steam, and hot oil, bear the important mission of transferring heat energy. In industrial settings, heat transfer media originate from heat sources such as boilers and large heat exchangers, flowing systematically along pipelines to provide continuous and stable heat to various industrial heating equipment, ensuring smooth production processes. In daily life, heat transfer media are transported through pipelines to building heating systems, creating a warm and comfortable living environment for people. In chemical enterprises, the number of outdoor heat transfer media pipelines is particularly vast, crisscrossing and distributed throughout the factory.

[0003] Most heat transfer medium pipelines in chemical plants are located outdoors. To effectively reduce heat loss, the industry commonly wraps these pipelines with at least one layer of insulation, hoping to achieve good thermal insulation. However, the strength of insulation layers, primarily composed of rock wool, decreases significantly after a period of use, making them prone to cracking. This leads to structural damage to the insulation layer, reducing its insulation performance and requiring regular inspection and replacement. As the pipeline distance increases, the temperature of the heat transfer medium drops sharply, resulting in significant unnecessary heat loss and severely impacting production efficiency and energy utilization. Furthermore, the vibrations caused by the transport of the heat transfer medium within the pipeline also negatively affect the stability of the insulation layer. Utility Model Content

[0004] To address the technical problems of poor insulation performance of existing heat medium pipelines and the impact of pipeline vibration on insulation layer stability during heat medium transportation, this utility model provides a heat medium pipeline insulation device. Multiple layers of lightweight insulation material are wrapped as insulation composite layers, which improves the insulation effect. Furthermore, the air cavity formed between the heat insulation reflective layer and the protective layer further enhances the insulation performance.

[0005] This utility model provides a heat insulation device for a heat medium pipeline, including a heat insulation composite layer wrapped around the heat medium pipeline. The thickness of the heat insulation composite layer is 10-30mm. The heat insulation composite layer has three layers of insulation material, including an aerogel layer, an adhesive layer outside the heat insulation composite layer, and a heat insulation reflective layer covered outside the adhesive layer. There is an air cavity between the heat insulation reflective layer and the protective layer. The air cavity is formed by setting an annular wave-shaped support component between the heat insulation reflective layer and the protective layer. The annular wave-shaped support component is an annular component with aluminum alloy strips or magnesium alloy strips that are bent back and forth along the length direction and connected at the ends. The thickness of the aluminum alloy strips or magnesium alloy strips is 1-2mm and the width is 15-30cm. A heat insulation coating is set on the inner surface of the protective layer.

[0006] Furthermore, the thermal insulation composite layer consists of an aluminosilicate cotton blanket, a silica aerogel layer, and a ceramic fiber layer from the inside out; the aluminosilicate cotton blanket has a thickness of 6-15mm, the silica aerogel layer has a thickness of 5-8mm, and the ceramic fiber layer has a thickness of 1.5-6mm.

[0007] Aluminosilicate cotton blankets are heat-resistant, with a maximum service temperature of up to 1000℃. They have low thermal conductivity, good insulation performance, and are lightweight. The silica aerogel layer is 98% air, with a minimum density of 3.55 kg / m³. 3 It is a lightweight porous nanotechnology material; the ceramic fiber layer has low conductivity, which can effectively prevent heat transfer, has a wide temperature adaptability, and can withstand high temperatures of up to 1000-1400℃. It also has a low density and is lightweight.

[0008] Furthermore, each layer of insulation material in the insulation composite layer is sealed with pressure-sensitive adhesive tape.

[0009] Furthermore, the adhesive layer is a heat-resistant epoxy adhesive layer.

[0010] Furthermore, the heat-insulating reflective layer is a stainless steel foil reflective layer or an aluminum foil bubble reflective layer with a thickness of 0.1-0.25mm.

[0011] Furthermore, the thickness of the air cavity is 25-60mm.

[0012] Furthermore, the annular wave-shaped support components are evenly spaced between the heat-insulating reflective layer and the protective layer.

[0013] Furthermore, the protective layer is made of aluminum alloy or magnesium alloy and has a thickness of 1-2mm.

[0014] Furthermore, the heat insulation coating is a silicone resin layer with a thickness of 1-2 mm.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model provides a heat insulation device for heat medium pipelines. By combining various insulation methods, it greatly reduces the heat loss of the heat medium in the pipeline. In actual production, it was found that after installing the heat insulation device on the same heat medium pipeline, the product output increased significantly, indicating that it has a good heat insulation effect. Specifically:

[0017] (1) The insulation composite layer is 10-30mm thick, lightweight and has a low load on the heat medium pipeline. It also includes an aerogel layer. The aerogel layer material has high porosity and low thermal conductivity, which can effectively block the conduction of heat in the heat medium pipeline, reduce heat loss, and greatly improve the insulation effect. The combination of the three insulation materials further enhances the insulation performance and forms multiple insulation barriers. Compared with a single insulation material, it can more effectively maintain the temperature stability in the heat medium pipeline and reduce energy consumption.

[0018] (2) The air cavity formed between the heat-insulating reflective layer and the protective layer utilizes the characteristic that air is a poor conductor of heat to further prevent heat transfer. At the same time, the heat-insulating reflective layer can reflect thermal radiation back, reducing heat loss through radiation. The annular wave-shaped support component ensures the stable existence of the air cavity while increasing the difficulty of air disturbance within the air cavity, reducing air convection heat loss, thereby further improving the heat insulation effect. Moreover, the annular wave-shaped support component not only supports the air cavity but also increases the connection strength between the heat-insulating reflective layer and the protective layer, enabling the entire device to maintain good structural integrity when facing different environmental conditions (such as temperature changes, slight vibration of pipelines, etc.), reducing the problem of heat insulation performance degradation due to structural damage.

[0019] (3) The inner surface of the protective layer is a heat-insulating coating, which can further reduce the heat transfer from the protective layer to the outside in a high-temperature environment. It works in synergy with other heat-insulating structures to comprehensively improve the heat insulation performance of the entire device. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] In the diagram, 1-heat medium pipe, 2-aluminosilicate cotton blanket, 3-silica aerogel layer, 4-ceramic fiber layer, 5-heat insulation and reflective layer, 6-annular corrugated support component, 7-protective layer. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] Example 1

[0025] A thermal insulation device for a heat transfer medium pipeline includes an insulation composite layer wrapped around the heat transfer medium pipeline 1. The insulation composite layer consists of three layers of stacked insulation material, from the inside out: an aluminosilicate cotton blanket 2, a silica aerogel layer 3, and a ceramic fiber layer 4. The aluminosilicate cotton blanket 2 is 6 mm thick, the silica aerogel layer 3 is 8 mm thick, and the ceramic fiber layer 4 is 6 mm thick. Each layer of insulation material in the insulation composite layer is sealed with pressure-sensitive adhesive tape. The outer layer of the insulation composite layer is a heat-resistant epoxy adhesive layer, and the heat-resistant epoxy adhesive layer is covered with a 0.25 mm thick aluminum foil bubble reflective layer. Between the aluminum foil bubble reflective layer and the protective layer 7 is an air cavity with a thickness of 25mm. The air cavity is formed by setting equally spaced annular wave-shaped support components 6 between the aluminum foil bubble reflective layer and the protective layer 7. The annular wave-shaped support components 6 are annular components with aluminum alloy strips that are bent back and forth along the length direction and connected at the ends. The aluminum alloy strips are 1mm thick and 15cm wide. An organic silicone resin layer with a thickness of 1mm is set on the inner surface of the protective layer 7. The protective layer 7 is made of aluminum alloy and has a thickness of 1mm. The joints of the protective layer 7 are sealed by welding.

[0026] Example 2

[0027] A thermal insulation device for a heat transfer medium pipeline includes an insulation composite layer wrapped around the heat transfer medium pipeline 1. The insulation composite layer consists of three layers of stacked insulation materials, from the inside out: an aluminosilicate cotton blanket 2, a silica aerogel layer 3, and a ceramic fiber layer 4. The aluminosilicate cotton blanket 2 is 15 mm thick, the silica aerogel layer 3 is 5 mm thick, and the ceramic fiber layer 4 is 1.5 mm thick. Each layer of insulation material is sealed with pressure-sensitive adhesive tape at the seams. Outside the insulation composite layer is a heat-resistant epoxy layer, and outside the heat-resistant epoxy layer is a 0.1 mm thick stainless steel foil reflective layer. Between the stainless steel foil reflective layer and the protective layer 7 is... An air cavity with a thickness of 60mm is formed by setting equally spaced annular wave-shaped support components 6 between the stainless steel foil reflective layer and the protective layer 7. The annular wave-shaped support component 6 is a magnesium alloy strip that is bent back and forth along its length and connected at the ends. The magnesium alloy strip is 2mm thick and 30cm wide. An air cavity with a thickness of 60mm is formed between the stainless steel foil reflective layer and the protective layer 7. An organic silicone resin layer with a thickness of 2mm is set on the inner surface of the protective layer 7. The protective layer 7 is made of magnesium alloy and has a thickness of 2mm. The joints of the protective layer 7 are sealed by welding.

[0028] Example 3

[0029] A thermal insulation device for a heat transfer medium pipeline includes an insulation composite layer wrapped around the heat transfer medium pipeline 1. The insulation composite layer consists of three layers of insulation material stacked together, from the inside out: an aluminosilicate cotton blanket 2, a silica aerogel layer 3, and a ceramic fiber layer 4. The aluminosilicate cotton blanket 2 is 10 mm thick, the silica aerogel layer 3 is 6 mm thick, and the ceramic fiber layer 4 is 4 mm thick. Each layer of insulation material in the insulation composite layer is sealed with pressure-sensitive adhesive tape. The outer layer of the insulation composite layer is a heat-resistant epoxy adhesive layer, and the heat-resistant epoxy adhesive layer is covered with a 0.2 mm thick aluminum foil bubble reflective layer. Between the aluminum foil bubble reflective layer and the protective layer 7 is an air cavity with a thickness of 40mm. The air cavity is formed by setting equally spaced annular wave-shaped support components 6 between the aluminum foil bubble reflective layer and the protective layer 7. The annular wave-shaped support components 6 are annular components with aluminum alloy strips that are bent back and forth along the length direction and connected at the ends. The aluminum alloy strips are 1mm thick and 15cm wide. An organic silicone resin layer with a thickness of 1mm is set on the inner surface of the protective layer 7. The protective layer 7 is made of aluminum alloy and has a thickness of 1mm. The joints of the protective layer 7 are sealed by welding.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat medium pipe heat insulation device comprising a heat insulation combined layer wrapped on a heat medium pipe (1), characterized in that, The thickness of the heat preservation combined layer is 10-30 mm, the heat preservation combined layer has three layers of heat preservation materials, including an aerogel layer, an adhesive layer is arranged outside the heat preservation combined layer, a heat insulation reflective layer (5) is coated outside the adhesive layer, an air cavity is arranged between the heat insulation reflective layer (5) and a protective layer (7), the air cavity is supported by arranging an annular wave-shaped supporting component (6) between the heat insulation reflective layer (5) and the protective layer (7), the annular wave-shaped supporting component (6) is an annular component formed by reciprocatingly bending an aluminum alloy strip or a magnesium alloy strip along the length direction and connecting the end portions, the thickness of the aluminum alloy strip or the magnesium alloy strip is 1-2 mm, the width is 15-30 cm, and a heat insulation coating layer is arranged on the inner surface of the protective layer (7).

2. A heat medium pipe heat insulating device according to claim 1, wherein The heat preservation combined layer has, from inside to outside, an aluminum-silicon acid cotton blanket (2), a silica aerogel layer (3) and a ceramic fiber layer (4); the thickness of the aluminum-silicon acid cotton blanket (2) is 6-15 mm, the thickness of the silica aerogel layer (3) is 5-8 mm, and the thickness of the ceramic fiber layer (4) is 1.5-6 mm.

3. A heat medium pipe heat insulating device according to claim 1, wherein Each layer of heat preservation material of the heat preservation combined layer is sealed by a pressure-sensitive adhesive tape.

4. A heat medium pipe heat insulating device according to claim 1, wherein The adhesive layer is a heat-resistant epoxy adhesive layer.

5. A heat medium pipe heat insulating device according to claim 1, wherein The heat insulation reflective layer (5) is a stainless steel foil reflective layer or an aluminum foil bubble reflective layer, and the thickness is 0.1-0.25 mm.

6. A heat medium pipe heat insulating device according to claim 1, wherein The thickness of the air cavity is 25-60 mm.

7. A heat medium pipe heat insulating device according to claim 1, wherein The annular wave-shaped supporting component (6) is arranged at equal intervals between the heat insulation reflective layer (5) and the protective layer (7).

8. A heat medium pipe heat insulating device according to claim 1, wherein The material of the protective layer (7) is aluminum alloy or magnesium alloy, and the thickness is 1-2 mm.

9. A heat medium pipe heat insulating device according to claim 1, wherein The heat insulation coating layer is an organic silicon resin layer with a thickness of 1-2 mm.

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