Heat insulation flange and pipeline assembly with same

Abstract

The heat insulation flange comprises an outer wall and an inner wall which are oppositely arranged, a fixing disc is arranged at the end of the outer wall, the inner wall is provided with a turnover edge, the turnover edge is located on the inner side of the fixing disc in the radial direction of the heat insulation flange, and the turnover edge is connected with the fixing disc. The folding edge is flush with the fixing disc to form a joint face which is used for being connected with an external pipeline, and a heat insulation layer is arranged between the outer wall and the inner wall. According to the heat insulation flange and the pipeline assembly with the heat insulation flange, the use requirement in the high-temperature environment can be met, and heat can be effectively discharged outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature medium transportation, and particularly relates to a heat-insulating flange and a pipeline assembly having the same. Background Art

[0002] During the process of medium transmission, the flange, as a widely used connecting component, has advantages such as simple structure, convenient installation, and strong adaptability. However, when the flange is used for the transportation of high-temperature media, problems such as a decline in sealing performance often occur. In the related art, during the flow of high-temperature media in the flange, the flange will transfer a large amount of heat from the high-temperature area to the surrounding environment, which will not only exacerbate the aging of the flange sealing surface structure, increase the thermal stress of the equipment, affect the stable operation of the equipment, but also result in significant energy loss. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, a heat-insulating flange is proposed in the embodiments of the utility model, which can meet the use requirements in a high-temperature environment and realize the effective external discharge of heat.

[0004] In addition, a pipeline assembly is also provided in the embodiments of the utility model, and the pipeline assembly includes a pipeline and the above-mentioned heat-insulating flange.

[0005] The heat-insulating flange provided by the embodiments of the utility model includes an outer wall and an inner wall arranged oppositely, and a fixing plate is provided at the end of the outer wall; the inner wall has a folded edge, the folded edge is located inside the fixing plate in the radial direction of the heat-insulating flange, the folded edge is connected to the fixing plate, the folded edge is flush with the fixing plate to form a joint surface, the joint surface is used for connecting an external pipeline, and a heat-insulating layer is provided between the outer wall and the inner wall.

[0006] The heat-insulating flange provided by the embodiments of the utility model realizes the efficient heat insulation and stable connection at the pipeline connection through the mutual cooperation of the outer wall, the inner wall, the fixing plate, the folded edge and the heat-insulating layer, and constructs an efficient heat-insulating and easy-to-install connection system.

[0007] In some embodiments, the fixing plate has a connected first annular portion and a second annular portion, the second annular portion is arranged inside the first annular portion, the thickness of the second annular portion is less than the thickness of the first annular portion, and the folded edge is attached to the second annular portion.

[0008] In some embodiments, the folded edge is connected to the fixing plate by welding.

[0009] In some embodiments, the inner wall is made of heat-resistant steel, and the outer wall is made of carbon steel.

[0010] In some embodiments, the thickness of the folding edge is set to be 1 mm to 5 mm.

[0011] In some embodiments, the heat insulation layer is made of a flexible heat insulation material.

[0012] In some embodiments, the heat insulation layer includes a wrapping net, and the wrapping net is arranged on the outer side of the flexible heat insulation material.

[0013] In some embodiments, a plurality of hooks are arranged on the inner wall and / or the outer wall, and the hooks have hook parts, and the hook parts are arranged in the heat insulation layer.

[0014] The pipeline assembly provided by the embodiment of the present utility model includes a pipeline and the heat insulation flange described in the above embodiment, and the pipeline is connected to the joint surface of the heat insulation flange.

[0015] In some embodiments, the pipeline assembly further includes a gasket, and the gasket is arranged between the heat insulation flange and the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective schematic diagram of the heat insulation flange provided by the embodiment of the present utility model.

[0017] Figure 2 is a structural schematic diagram of the heat insulation flange provided by the embodiment of the present utility model.

[0018] Figure 3 is Figure 2 a partial enlarged view of part A in the heat insulation flange shown.

[0019] Figure 4 is a combined schematic diagram of the heat insulation flange provided by the embodiment of the present utility model and an external pipeline.

[0020] Reference numerals:

[0021] 100, heat insulation flange; 200, pipeline;

[0022] 10, outer wall;

[0023] 20, inner wall; 21, folding edge;

[0024] 30, fixing plate; 31, joint surface; 32, first annular part; 33, second annular part;

[0025] 40, heat insulation layer;

[0026] 50, hook; 51, hook part;

[0027] 60, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0029] As Figure 1 、 Figure 2 and Figure 3 shown, an embodiment of the present utility model provides a heat-insulating flange 100. The heat-insulating flange 100 includes an outer wall 10 and an inner wall 20 disposed opposite to each other. A fixing plate 30 is provided at the end of the outer wall 10. The inner wall 20 has a folded edge 21. The folded edge 21 is located inside the fixing plate 30 in the radial direction of the heat-insulating flange 100. The folded edge 21 is connected to the fixing plate 30. The folded edge 21 is flush with the fixing plate 30 to form a joint surface 31. The joint surface 31 is used to connect an external pipeline 200. A heat-insulating layer 40 is provided between the outer wall 10 and the inner wall 20.

[0030] First of all, the heat-insulating flange 100 constructs a heat transfer barrier through the three-layer structure of the outer wall 10, the heat-insulating layer 40 and the inner wall 20, effectively preventing the transfer and dissipation of heat. Furthermore, the folded edge 21 is also a part of the inner wall 20, that is, a part of the inner wall 20 is bent in the radial direction of the heat-insulating flange 100 to form the folded edge 21. The folded edge 21 is in the shape of a thin sheet, which can not only serve as a bridge for heat transfer, but also avoid excessive heat transfer to the joint surface 31 during the heat transfer process, helping to reduce the risk of seal failure caused by heat accumulation. And, the folded edge 21 is flush with the fixing plate 30 to form a flat joint surface 31, which not only greatly simplifies the docking and installation process of the external pipeline 200, improves the construction efficiency, but also effectively enhances the firmness and tightness of the connection by increasing the contact area.

[0031] In summary, the heat-insulating flange 100 provided by the embodiment of the present utility model realizes efficient heat insulation and stable connection at the joint of the pipeline 200 through the mutual cooperation of the outer wall 10, the inner wall 20, the fixing plate 30, the folded edge 21 and the heat-insulating layer 40, and constructs an efficient heat-insulating and easy-to-install connection system.

[0032] As Figure 2 and Figure 3 shown, in some embodiments, the fixing plate 30 has a connected first annular portion 32 and a second annular portion 33. The second annular portion 33 is disposed inside the first annular portion 32. The thickness of the second annular portion 33 is less than that of the second annular portion 33. The folded edge 21 is disposed in contact with the second annular portion 33, which can not only facilitate the docking and installation with the external pipeline 200, but also the thinner second annular portion 33 can reduce the transfer and accumulation of heat, so that the heat can be effectively dispersed, effectively reducing the risk of seal failure caused by heat accumulation.

[0033] Among them, the first annular part 32 is the main load-bearing part of the fixed disk 30. Bolt holes are usually provided on the first annular part 32 for installing fastening bolts to tightly connect the heat-insulating flange 100 to the external pipeline 200 or equipment. The second annular part 33 is arranged inside the first annular part 32, and the thickness of the second annular part 33 is less than that of the first annular part 32 to form a stepped surface, which not only reduces the overall weight of the fixed disk 30, but also ensures that the folded edge 21 can closely fit on the stepped surface, so that the fixed disk 30 and the folded edge 21 form a flat joint surface 31, facilitating the docking installation of the external pipeline 200.

[0034] Furthermore, the folded edge 21 is connected by fitting to the second annular part 33, which can improve the stability of the connection. Optionally, the folded edge 21 can be connected to the fixed disk 30 by welding. Among them, during the welding process, the high-temperature molten solder spreads and solidifies rapidly on the contact surface between the folded edge 21 and the second annular part 33, forming a firm metallurgical bond. This connection method not only has high strength and high sealing performance, but also can resist various stresses and vibrations that may occur during the operation of the pipeline 200, ensuring the long-term stable operation of the heat-insulating flange 100.

[0035] At the same time, the welding connection further improves the heat transfer efficiency. Due to the good thermal conductivity between the solder and the materials of the folded edge 21 and the fixed disk 30, it can effectively avoid the accumulation and retention of heat at the connection of the pipeline 200, reduce the occurrence of local overheating phenomena, and improve the heat insulation performance and thermal stability of the entire heat-insulating flange 100. Of course, in some embodiments, the folded edge 21 and the second annular part 33 can also be connected by bolts, bonding, etc.

[0036] Furthermore, the thickness of the folded edge 21 is set to be 1 mm to 5 mm, such as 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., so that while the folded edge 21 can transfer heat, the transfer is limited, avoiding the reduction of the sealing performance of the heat-insulating flange 100 due to excessive heat transfer, and thus protecting the stability of the external structure.

[0037] In some embodiments, the inner wall 20 is made of heat-resistant steel, and the outer wall 10 is made of carbon steel. Among them, heat-resistant steel is also called heat-resistant steel or a steel type with high strength, oxidation resistance, carburization resistance, and sufficient toughness at high temperatures. It can maintain its mechanical properties and stability at high temperatures for a long time. When the flange needs to withstand the transmission of high-temperature fluids or gases, heat-resistant steel can resist problems such as material softening, creep, and oxidation caused by high temperatures, ensuring the safe operation of the flange in a high-temperature environment.

[0038] Carbon steel, also known as plain steel, is an iron-carbon alloy containing a small amount of alloying elements. In the heat-insulating flange 100, the outer wall 10 mainly bears the structural support and contact with the external environment, and does not need to withstand high temperatures like the inner wall 20. Therefore, using carbon steel as the material for the outer wall 10 can reduce the manufacturing cost while ensuring the structural strength, meeting the performance requirements and cost-effectiveness of the heat-insulating flange 100 in a high-temperature environment.

[0039] In some embodiments, the heat-insulating layer 40 is made of a flexible thermal insulation material, which can adapt to small deformations under conditions such as temperature changes, pressure fluctuations, and vibrations, closely fit on the surfaces of the inner wall 20 and the outer wall 10, always maintain close contact with the surface of the inner wall 20, form a continuous thermal insulation barrier, effectively reduce heat transfer and dissipation, and maintain a stable heat-insulating effect.

[0040] Optionally, the flexible thermal insulation material can be set as thermal insulation cotton. The thermal insulation cotton has characteristics such as light weight, softness, and easy processing, and can be evenly laid between the outer wall 10 and the inner wall 20, ensuring that the thickness of the heat-insulating layer 40 is consistent in all directions, thereby avoiding differences in heat-insulating effects caused by uneven thickness.

[0041] Furthermore, the heat-insulating layer 40 includes a wrapping net, and the wrapping net is arranged on the outside of the flexible thermal insulation material. Among them, the wrapping net can provide an additional support and fixing framework for the flexible thermal insulation material. The flexible heat-insulating material is arranged inside the wrapping net, making it easier to fix and position during installation, and also facilitating subsequent maintenance and replacement.

[0042] Even further, as Figure 4 shown, a plurality of hooks 50 are provided on the inner wall 20 and / or the outer wall 10. The hook 50 has a hook portion 51, and the hook portion 51 is arranged inside the heat-insulating layer 40. The hook portion 51 of the hook 50 is embedded in the heat-insulating layer 40, which can effectively fix the heat-insulating layer 40 on the inner wall 20 or the outer wall 10. It not only effectively prevents the displacement that may be caused by the expansion and contraction of the heat-insulating layer 40 in a high-temperature environment, but also greatly reduces the risk of falling off caused by vibration or external impact. Moreover, the hook 50 also enhances the connection strength between the heat-insulating layer 40 and the inner wall 20 or the outer wall 10, making the structure of the entire heat-insulating flange 100 more stable. In this embodiment, the inner wall 20 is usually closer to the high-temperature medium than the outer wall 10. The hook 50 is arranged on the inner wall 20, which can further improve the heat-insulating effect and ensure the safe operation of the pipeline 200 or the equipment.

[0043] As Figure 4 shown, the embodiment of the present utility model also provides a pipeline assembly. The pipeline assembly includes a pipeline 200 and the heat-insulating flange 100 in the above embodiment. The pipeline 200 is connected to the joint surface 31 of the heat-insulating flange 100, jointly constituting a safe and efficient medium transmission system.

[0044] Furthermore, the pipeline component further includes a gasket 60, which is arranged between the heat-insulating flange 100 and the pipeline 200. When the heat-insulating flange 100 and the pipeline 200 are fastened and connected, the gasket 60 will be compressed and fill the tiny gaps between the joint surfaces 31 to form a sealing layer, thereby effectively preventing the medium from leaking out from the joint surfaces 31.

[0045] It should be noted that the pipeline component can use the heat-insulating flange 100 provided in the above embodiments. Therefore, the beneficial effects that the pipeline component can achieve can refer to the beneficial effects corresponding to the heat-insulating flange 100 provided above, which will not be elaborated here.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "inner", "outer", "axial", "radial", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0050] In the present utility model, the terms "an embodiment", "some embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0051] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A thermal insulation flange, characterized in that: It comprises an outer wall and an inner wall arranged opposite to each other, a fixed disk is arranged at the end of the outer wall; the inner wall has a folded edge, the folded edge is located on the inner side of the fixed disk in the radial direction of the thermal insulation flange, the folded edge is connected to the fixed disk, the folded edge is flush with the fixed disk to form a joint surface, the joint surface is used to connect an external pipeline, and a thermal insulation layer is arranged between the outer wall and the inner wall.

2. The thermal insulation flange according to claim 1, characterized in that: The fixing plate comprises a first annular portion and a second annular portion connected to each other. The second annular portion is arranged inside the first annular portion. The thickness of the second annular portion is smaller than that of the first annular portion. The folded edge is arranged to fit the second annular portion.

3. The thermal insulation flange according to claim 1, characterized in that: The folded edge is connected to the fixing plate by welding.

4. The thermal insulation flange according to claim 1, characterized in that: The inner wall is made of heat-resistant steel, and the outer wall is made of carbon steel.

5. The thermal insulation flange according to claim 1, characterized in that: The thickness of the folded edge is set to 1 mm to 5 mm.

6. The thermal insulation flange according to claim 1, characterized in that: The heat insulation layer is made of flexible heat-insulating material.

7. The thermal insulation flange according to claim 6, characterized in that: The heat insulation layer comprises a wrapping net, and the wrapping net is arranged on the outer side of the flexible heat-insulating material.

8. The thermal insulation flange according to claim 6, characterized in that: A plurality of hooks are arranged on the inner wall and / or the outer wall, and the hooks have hook portions, and the hook portions are arranged in the heat insulation layer.

9. A pipeline assembly, characterized in that: The pipeline assembly comprises a pipeline and the thermal insulation flange according to any one of claims 1 to 8, wherein the pipeline is connected to a joint surface of the thermal insulation flange.

10. The pipe assembly according to claim 9, characterized in that The pipeline assembly also includes a sealing gasket, which is arranged between the thermal insulation flange and the pipeline.

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