Splicing type thermal insulation pipe

Abstract

The utility model relates to the technical field of thermal insulation pipes, in particular to a spliced thermal insulation pipe. The spliced thermal insulation pipe comprises a pipe body and connectors arranged at the two ends of the pipe body, the pipe body comprises a first glass fiber reinforced plastic sleeve layer, an aerogel felt layer and a second glass fiber reinforced plastic sleeve layer which are sequentially arranged from inside to outside, and the first glass fiber reinforced plastic sleeve layer, the aerogel felt layer and the second glass fiber reinforced plastic sleeve layer are integrally formed. And the connectors are used for splicing and connecting the adjacent pipe bodies. By the adoption of the mode, the connecting mode can be simplified, the sealing performance of the connecting position is guaranteed, and the burying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation pipe technology, and in particular to a spliced ​​thermal insulation pipe. Background Technology

[0002] Thermal insulation pipes are commonly used for transporting liquids, gases, and other media. In thermal insulation projects for pipelines in petroleum, chemical, aerospace, military, district heating, and municipal industries, thermal insulation pipes not only possess advanced technology and practical performance that are difficult to match with traditional underground trench and overhead pipelines, but also have significant social and economic benefits. They are also a powerful measure for energy conservation in heating systems, and therefore have been widely used.

[0003] Currently, during the installation of insulated pipes, the pipes are connected by welding, which is not only inefficient but also increases the burden on workers. Moreover, due to the limited welding site, problems such as missed welds or poor welds are prone to occur, which is also very inconvenient for later pipeline inspection and maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a spliced ​​insulation pipe that simplifies the connection method, ensures the sealing of the connection, and improves the burial efficiency.

[0005] This utility model discloses a splicing insulation pipe, including: a pipe body, and connectors disposed at both ends of the pipe body. The pipe body includes a first fiberglass sleeve layer, an aerogel felt layer, and a second fiberglass sleeve layer arranged sequentially from the inside to the outside, and the first fiberglass sleeve layer, the aerogel felt layer, and the second fiberglass sleeve layer are integrally formed. The connectors are used to splice and connect adjacent pipe bodies.

[0006] Optionally, the connector is welded to the pipe body.

[0007] Optionally, the connector includes a first connecting part and a second connecting part that are connected to each other. The first connecting part is welded to the pipe body, and the second connecting part is provided with threads for the adapter to be threadedly connected to the second connecting part.

[0008] Optionally, the diameter of the first connecting part is the same as the diameter of the tube body, and the diameter of the second connecting part is smaller than the diameter of the first connecting part.

[0009] Optionally, the connector is a flange, and the diameter of the inner ring of the flange is greater than or equal to the diameter of the inner ring of the pipe.

[0010] Optionally, the materials of the first fiberglass sleeve layer and the second fiberglass sleeve layer are glass fiber reinforced epoxy resin.

[0011] Optionally, the outer and inner diameters of the tube may be 630mm×426mm, 530mm×324mm, or 426mm×324mm.

[0012] Optionally, the thermal conductivity of the tube is less than or equal to 0.014 W / (m·K).

[0013] Optionally, the thickness of the first fiberglass sleeve layer and the second fiberglass sleeve layer are equal and less than the thickness of the aerogel felt layer.

[0014] Optionally, the outer ring of the second fiberglass sleeve layer is coated with an anti-corrosion layer.

[0015] Compared with the prior art, the beneficial effects of the spliced ​​insulation pipe provided by this utility model embodiment are as follows: By setting the pipe body as a first fiberglass sleeve layer, an aerogel felt layer, and a second fiberglass sleeve layer arranged sequentially from the inside out, and the first fiberglass sleeve layer, the aerogel felt layer, and the second fiberglass sleeve layer being integrally formed, it is beneficial to ensure the structural strength and required insulation performance of the insulation pipe. Furthermore, by using connectors at opposite ends of the pipe body, welding is not required when splicing the spliced ​​insulation pipe. Adjacent pipe bodies can be spliced ​​together through the connectors, avoiding problems caused by welding defects due to inconvenient welding, simplifying the connection method, ensuring the sealing of the connection, and improving the burial efficiency. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is one of the structural schematic diagrams of the spliced ​​insulation pipe provided in this utility model embodiment;

[0018] Figure 2 This is the second structural schematic diagram of the spliced ​​insulation pipe provided in this embodiment of the utility model.

[0019] The labels for the attached figures are as follows:

[0020] 100. Spliced ​​insulation pipe; 110. Pipe body; 112. First fiberglass sleeve layer; 114. Aerogel felt layer; 116. Second fiberglass sleeve layer; 120. Connector; 121. First connection part; 122. Second connection part; 124. Flange. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a splicing insulation pipe 100, including: a pipe body 110, and connectors 120 disposed at both ends of the pipe body 110. The pipe body 110 includes a first fiberglass sleeve layer 112, an aerogel felt layer 114, and a second fiberglass sleeve layer 116 arranged sequentially from the inside to the outside, and the first fiberglass sleeve layer 112, the aerogel felt layer 114, and the second fiberglass sleeve layer 116 are integrally formed. The connectors 120 are used to splice and connect adjacent pipe bodies 110.

[0023] Specifically, the pipe body 110 consists of three layers: from the inside out, a first fiberglass sleeve layer 112, an aerogel felt layer 114, and a second fiberglass sleeve layer 116. This layered structure serves different functions. The first and second fiberglass sleeve layers 112 and 116 primarily provide structural support and protection for the internal insulation material, while the middle aerogel felt layer 114 is the core insulation component. The aerogel felt layer 114 has extremely low thermal conductivity, effectively preventing heat transfer and minimizing temperature loss of the medium within the pipe during transport. The three-layer structure is integrally molded, enhancing the bonding strength between layers and preventing separation during use, thereby improving the stability and reliability of the entire pipe body 110. Connectors 120 are provided at both ends of the pipe body 110 for splicing adjacent pipe bodies 110. This design changes the traditional method of relying solely on welding for insulated pipe connections, providing a more convenient connection method that is expected to improve construction efficiency and reduce the workload of workers.

[0024] In addition, the first fiberglass sleeve layer 112 and the second fiberglass sleeve layer 116 have certain electrical conductivity. When used as part of the spliced ​​insulation pipe 100, they can conduct static electricity, improve the safety of fluid transportation, and are lightweight. They also have certain corrosion resistance properties, which can improve the performance of the spliced ​​insulation pipe 100.

[0025] The spliced ​​insulation pipe 100 provided in this application embodiment is configured by setting the pipe body 110 as a first fiberglass sleeve layer 112, an aerogel felt layer 114, and a second fiberglass sleeve layer 116 arranged sequentially from the inside out. The first fiberglass sleeve layer 112, the aerogel felt layer 114, and the second fiberglass sleeve layer 116 are integrally formed, which helps to ensure the structural strength and required insulation performance of the insulation pipe. Furthermore, by using connectors 120 at opposite ends of the pipe body 110, welding is not required when splicing the spliced ​​insulation pipe 100. Adjacent pipe bodies 110 can be spliced ​​and connected through the connectors 120, avoiding problems caused by welding defects due to inconvenient welding, simplifying the connection method, ensuring the sealing of the connection, and improving the burial efficiency.

[0026] In an optional embodiment of this application, the connector 120 is welded to the pipe body 110.

[0027] Specifically, the welding process between connector 120 and pipe body 110 can be completed in the factory to ensure the coaxiality and sealing of connector 120 and pipe body 110, avoiding quality fluctuations in on-site welding. During on-site construction, they can be directly spliced ​​and connected using connector 120.

[0028] like Figure 1 As shown, the connector 120 includes a first connecting part 121 and a second connecting part 122 that are connected to each other. The first connecting part 121 is welded to the pipe body 110, and the second connecting part 122 is provided with threads for the adapter to be threadedly connected to the second connecting part 122 respectively.

[0029] Specifically, the first connecting part 121 is responsible for welding the connection to the pipe body 110, ensuring the stability between the connector 120 and the pipe body 110. The second connecting part 122 is threaded, providing greater flexibility for the connection. The thread allows for easy connection to adapters, which can be selected according to different usage scenarios and needs, such as adapters of different materials and specifications, to meet diverse pipe connection requirements. Commonly available adapters can be used, improving replaceability and ensuring ease of connection. Furthermore, compared to other connection methods, such as simple welding or snap-fit ​​connections, threaded connections offer detachability and adjustability. During installation, if the position or angle of the pipe needs adjustment, fine-tuning can be achieved by loosening or tightening the threads. Moreover, during later maintenance, if a component needs replacement, the adapter can be easily removed from the connector 120 for replacement.

[0030] In an optional embodiment of this application, the diameter of the first connecting portion 121 is the same as the diameter of the tube body 110, and the diameter of the second connecting portion 122 is smaller than the diameter of the first connecting portion 121.

[0031] Specifically, the diameter of the first connecting part 121 is the same as the diameter of the pipe body 110. This ensures a smooth transition at the connection point during welding, reducing welding difficulty, and also ensures that the welded pipe will not generate additional resistance due to diameter changes during fluid transport. The diameter of the second connecting part 122 is smaller than that of the first connecting part 121. This design is mainly to accommodate different connection requirements. When connecting the smaller diameter second connecting part 122 to the adapter, it saves materials and reduces costs. Furthermore, the smaller diameter facilitates operation in space-constrained environments, such as narrow pipe shafts, where the smaller diameter connection part is easier to install and adjust.

[0032] In another optional embodiment of this application, the connector 120 is a flange 124, and the diameter of the inner ring of the flange 124 is greater than or equal to the diameter of the inner ring of the pipe body 110.

[0033] Specifically, designing the connector 120 as a flange is a common and reliable connection method. The flange 124 connects adjacent pipes together with bolts, providing strong connection strength and sealing. Compared to welding connections, flange 124 connections offer better disassembly, facilitating later maintenance and repair. Furthermore, the inner diameter of the flange 124 is greater than or equal to the inner diameter of the pipe body 110. This design aims to ensure smooth fluid flow within the pipeline. If the inner diameter of the flange 124 is too small, it will create a narrowing within the pipe, increasing flow resistance and affecting the pipeline's transport efficiency.

[0034] In an optional embodiment of this application, the first fiberglass sleeve layer 112 and the second fiberglass sleeve layer 116 are made of glass fiber reinforced epoxy (GRE).

[0035] Specifically, glass fiber reinforced epoxy resin is a high-performance composite material. Glass fiber, with its high strength and high modulus, provides excellent structural strength to the casing layer, enabling it to withstand external pressure and impact. Epoxy resin, on the other hand, possesses good corrosion resistance, adhesion, and insulation properties. Corrosion resistance ensures the casing layer will not be damaged by corrosion in harsh environments, extending the pipeline's service life; adhesion allows the glass fiber and epoxy resin to bond tightly together, forming a unified whole and improving the material's performance.

[0036] In optional embodiments of this application, the outer and inner diameters of the tube 110 include 630mm×426mm, 530mm×324mm, or 426mm×324mm.

[0037] Specifically, the above-mentioned specifications and dimensions can meet the needs of different engineering scenarios. Different pipeline transport media, transport pressures, and engineering design requirements necessitate pipelines of different specifications, which helps to improve adaptability during use. In addition, the length of the pipe body 110 can be determined according to the actual working conditions, and this application embodiment does not impose specific limitations on this.

[0038] In an optional embodiment of this application, the thermal conductivity of the tube 110 is less than or equal to 0.014 W / (m·K).

[0039] By adopting the above technical indicators, in the process of energy transmission, whether it is hot water being transported in heating pipelines or oil and natural gas pipelines, a lower thermal conductivity can reduce energy loss during transmission, thereby reducing energy consumption, saving costs, and meeting the requirements of energy conservation and environmental protection.

[0040] Optionally, the thickness of the first fiberglass sleeve layer 112 and the second fiberglass sleeve layer 116 are equal and less than the thickness of the aerogel felt layer 114.

[0041] Specifically, the first fiberglass sleeve layer 112 and the second fiberglass sleeve layer 116 have equal thicknesses, forming a symmetrical structure and avoiding warping deformation caused by uneven stress between the inner and outer layers. At the same time, the aerogel felt layer 114 is thicker, which can better optimize the thermal insulation performance and strength ratio, making the spliced ​​insulation pipe 100 more robust and durable, and also providing better thermal insulation effect.

[0042] In an optional embodiment of this application, the outer ring of the second fiberglass sleeve layer 116 is coated with an anti-corrosion layer.

[0043] The anti-corrosion layer can be made of paint, epoxy resin coating, polyethylene anti-corrosion tape, etc. These materials have good chemical stability and can isolate the pipeline from external corrosive media. For example, in a humid soil environment containing acidic substances, the anti-corrosion layer can prevent the acidic components in the soil from contacting the second fiberglass sleeve layer 116, avoiding corrosion of the sleeve layer and thus extending the overall service life of the pipeline.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A spliced insulating pipe, characterized by, The pipe body comprises a first glass fiber reinforced plastic sleeve layer, an aerogel blanket layer and a second glass fiber reinforced plastic sleeve layer arranged in sequence from inside to outside, and the first glass fiber reinforced plastic sleeve layer, the aerogel blanket layer and the second glass fiber reinforced plastic sleeve layer are integrally formed.

2. The split thermal tube of claim 1, wherein, The connecting head is welded to the pipe body.

3. The spliced insulating tube according to claim 2, characterized in that, The connecting head comprises a first connecting part and a second connecting part connected to each other, the first connecting part is welded to the pipe body, and the second connecting part is provided with threads for threadedly connecting an adapter to the second connecting part.

4. The spliced insulating tube according to claim 3, characterized by The diameter of the first connecting part is consistent with the diameter of the pipe body, and the diameter of the second connecting part is smaller than the diameter of the first connecting part.

5. The split thermal tube of claim 2, wherein, The connecting head is a flange, and the diameter of the inner ring of the flange is greater than or equal to the diameter of the inner ring of the pipe body.

6. The spliced insulating tube according to any one of claims 1 to 5, characterized in that, The materials of the first glass fiber reinforced plastic sleeve layer and the second glass fiber reinforced plastic sleeve layer are glass fiber reinforced epoxy resin.

7. The spliced insulating tube according to any one of claims 1 to 5, characterized in that, The specifications of the outer diameter and the inner diameter of the pipe body include 630mm*426mm, 530mm*324mm or 426mm*324mm.

8. The spliced insulating tube according to any one of claims 1 to 5, characterized in that, The thermal conductivity of the pipe body is less than or equal to 0.014W / (m*K).

9. The spliced insulating tube according to any one of claims 1 to 5, characterized by The thicknesses of the first glass fiber reinforced plastic sleeve layer and the second glass fiber reinforced plastic sleeve layer are equal and smaller than the thickness of the aerogel blanket layer.

10. The spliced insulating tube according to any one of claims 1 to 5, characterized in that, The outer ring of the second glass fiber reinforced plastic sleeve layer is coated with an anti-corrosion layer.

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