Heat preservation pipeline for heat supply pipe network

Abstract

The invention provides a heat preservation pipeline for a heat supply network, which comprises a pipeline body for conveying hot water or steam, an anti-corrosion layer laid on the outer surface of the pipeline body and used for preventing the pipeline body from being in contact with a corrosive medium in an external environment, and a heat preservation layer laid on the outer surface of the anti-corrosion layer and used for preventing the pipeline body from being in contact with the corrosive medium in the external environment. The heat preservation layer is laid on the outer surface of the pipeline body and used for blocking heat exchange between the pipeline body and the external environment, the waterproof layer is laid on the outer surface of the heat preservation layer and used for blocking the heat preservation layer and the anti-corrosion layer from making contact with moisture in the external environment, and the protection layer is connected to the outer surface of the waterproof layer in a sleeving mode and used for protecting the pipeline body, the anti-corrosion layer, the heat preservation layer and the waterproof layer. The pipeline has the effects of corrosion prevention, water prevention and heat preservation on the pipeline body, the heat preservation layer is made of the phase change material, the phase change material can absorb and release heat released by the pipeline body, the service life of the heat preservation layer can be prolonged, the maintenance cost can be reduced, and the heat preservation effect on the pipeline body is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of central heating, and particularly relates to a heat preservation pipeline for a central heating pipeline network. BACKGROUND

[0002] The central heating pipeline network is a core component of a central heating system in a city or region, which transports hot water or steam generated by a heat source (such as a boiler room, a thermal power plant, a geothermal station, etc.) to a user end (such as a residence, a commercial building, an industrial facility, etc.) through a pipeline network, so as to realize large-scale distribution and utilization of heat energy.

[0003] In the process of long-distance transportation of hot water or steam by the pipeline network, a large amount of heat loss is easily generated, which leads to a decrease in the heating efficiency of the central heating system. Therefore, heat preservation of the pipeline in the central heating pipeline network is a necessary measure to improve the heating efficiency of the central heating system.

[0004] At present, when the pipeline in the central heating pipeline network is subjected to heat preservation, the heat preservation effect is poor and the heat preservation effect is difficult to control, so the heat preservation measure for the pipeline in the related art needs to be improved. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a heat preservation pipeline for a central heating pipeline network to solve the above-mentioned technical problems.

[0006] According to an aspect of an embodiment of the present application, a heat preservation pipeline for a central heating pipeline network is provided, which comprises: a pipeline body for transporting hot water or steam; a corrosion-resistant layer applied to an outer surface of the pipeline body for blocking contact of the pipeline body with corrosive media in an external environment; a heat preservation layer applied to an outer surface of the corrosion-resistant layer for blocking heat exchange between the pipeline body and the external environment; the heat preservation layer comprises: a phase change material layer; a waterproof layer applied to an outer surface of the heat preservation layer for blocking contact of the heat preservation layer, the corrosion-resistant layer and the external environment with moisture; and a protective layer sleeved to an outer surface of the waterproof layer for protecting the pipeline body, the corrosion-resistant layer, the heat preservation layer and the waterproof layer.

[0007] In an embodiment of the present application, the heat preservation pipeline further comprises: a carbon fiber layer arranged between the corrosion-resistant layer and the heat preservation layer for heating the pipeline body when the temperature of the pipeline body is lower than a preset temperature threshold; and a graphene layer arranged between the corrosion-resistant layer and the carbon fiber layer for conducting heat generated by the carbon fiber layer to the pipeline body.

[0008] In an embodiment of the present application, the carbon fiber layer is provided with an electric heating wire, the electric heating wire is connected with a thermal sensor, and the thermal sensor is connected with a first external power supply; the thermal sensor is arranged between the carbon fiber layer and the graphene layer; the thermal sensor is used to connect the first external power supply with the electric heating wire when the temperature of the pipeline body is lower than the preset temperature threshold, and disconnect the connection between the first external power supply and the electric heating wire when the temperature of the pipeline body is greater than or equal to the preset temperature threshold.

[0009] In an embodiment of the present application, the thin film thermal sensor is connected with a second external power supply, and the thin film thermal sensor is connected with a pipeline temperature monitoring controller; the pipeline temperature monitoring controller is used to control the first external power supply to stop power supply when the temperature of the pipeline body is greater than or equal to the preset temperature threshold, and control the first external power supply to restore power supply when the temperature of the pipeline body is less than the preset temperature threshold.

[0010] In an embodiment of the present application, the phase change material layer includes any one of a microencapsulated phase change material coating, an inorganic phase change nano-coating, and a mesoporous silica-based shaped phase change material thermal insulation coating; when the carbon fiber layer does not heat the pipeline body, a thermal insulation channel is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the phase change material layer; when the carbon fiber layer heats the pipeline body, a thermal insulation channel is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the phase change material layer; a heating channel is formed between the pipeline body, the anticorrosion layer, the graphene layer, and the carbon fiber layer; and a thermal insulation channel is formed between the carbon fiber layer and the phase change material layer.

[0011] In an embodiment of the present application, the phase change material layer comprises: a microencapsulated phase change material coating and an inorganic phase change nano coating; the microencapsulated phase change material coating is arranged on the outer surface of the carbon fiber layer, and the inorganic phase change nano coating is arranged on the outer surface of the microencapsulated phase change material coating; when the carbon fiber layer does not heat the pipeline body, the heat preservation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nano coating; the heat preservation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; and the heat preservation channels are formed among the microencapsulated phase change material coating and the inorganic phase change nano coating; when the carbon fiber layer heats the pipeline body, the heat preservation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nano coating; the heat preservation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; the heat preservation channels are formed among the microencapsulated phase change material coating and the inorganic phase change nano coating; the heating channels are formed among the pipeline body, the anticorrosive layer, the graphene layer and the carbon fiber layer; the heat preservation channels are formed among the carbon fiber layer and the microencapsulated phase change material coating; and the heat preservation channels are formed among the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nano coating.

[0012] In an embodiment of the present application, the phase change material layer comprises: a microencapsulated phase change material coating and a mesoporous silica-based shaped phase change material thermal insulation coating; the microencapsulated phase change material coating is arranged on the outer surface of the carbon fiber layer, and the mesoporous silica-based shaped phase change material thermal insulation coating is arranged on the outer surface of the microencapsulated phase change material coating; when the carbon fiber layer does not heat the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; and the thermal insulation channels are formed among the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material thermal insulation coating; when the carbon fiber layer heats the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; the thermal insulation channels are formed among the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the heating channels are formed among the pipeline body, the anticorrosive layer, the graphene layer and the carbon fiber layer; the thermal insulation channels are formed among the carbon fiber layer and the microencapsulated phase change material coating; and the thermal insulation channels are formed among the carbon fiber layer, the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material thermal insulation coating.

[0013] In an embodiment of the present application, the phase change material layer comprises: an inorganic phase change nano coating and a mesoporous silica-based shaped phase change material thermal insulation coating; the inorganic phase change nano coating is applied to the outer surface of the carbon fiber layer, and the mesoporous silica-based shaped phase change material thermal insulation coating is applied to the outer surface of the inorganic phase change nano coating; when the carbon fiber layer does not heat the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the inorganic phase change nano coating; and the thermal insulation channels are formed among the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material thermal insulation coating; when the carbon fiber layer heats the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the inorganic phase change nano coating; the thermal insulation channels are formed among the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the heating channels are formed among the pipeline body, the anticorrosive layer, the graphene layer and the carbon fiber layer; the thermal insulation channels are formed among the carbon fiber layer and the inorganic phase change nano coating; and the thermal insulation channels are formed among the carbon fiber layer, the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material thermal insulation coating.

[0014] In an embodiment of the present application, the phase change material layer comprises: a microencapsulated phase change material coating, an inorganic phase change nano-coating, and a mesoporous silica-based shaped phase change material thermal insulation coating; the microencapsulated phase change material coating is applied to the outer surface of the carbon fiber layer, the inorganic phase change nano-coating is applied to the outer surface of the microencapsulated phase change material coating; the mesoporous silica-based shaped phase change material thermal insulation coating is applied to the outer surface of the inorganic phase change nano-coating; when the carbon fiber layer does not heat the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nano-coating, and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano-coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; the thermal insulation channels are formed between the microencapsulated phase change material coating and the inorganic phase change nano-coating; and the thermal insulation channels are formed between the inorganic phase change nano-coating and the mesoporous silica-based shaped phase change material thermal insulation coating; when the carbon fiber layer heats the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nano-coating, and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano-coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; the thermal insulation channels are formed between the microencapsulated phase change material coating and the inorganic phase change nano-coating; and the thermal insulation channels are formed between the inorganic phase change nano-coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the heating channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, and the carbon fiber layer; the thermal insulation channels are formed between the carbon fiber layer and the microencapsulated phase change material coating; the thermal insulation channels are formed among the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano-coating; and the thermal insulation channels are formed among the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nano-coating, and the mesoporous silica-based shaped phase change material thermal insulation coating.

[0015] In an embodiment of the present application, the protective layer comprises: a shock absorption layer applied to the outer surface of the waterproof layer; a protective tube sleeved on the outer surface of the shock absorption layer, and the outer surface of the protective tube is applied with an outer anticorrosive layer and an outer waterproof layer.

[0016] The beneficial effects of this application are as follows: By setting up a pipeline body, an anti-corrosion layer, an insulation layer, a waterproof layer, and a protective layer, this application achieves the functions of anti-corrosion, waterproofing, and insulation of the pipeline body, and can reduce the damage caused by external forces to the pipeline body, anti-corrosion layer, insulation layer, and waterproof layer. At the same time, the insulation layer uses a phase change material, which can absorb and release the heat released by the pipeline body. This not only extends the service life of the insulation layer itself and reduces maintenance costs, but also improves the insulation effect of the pipeline body.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of an insulated pipe for a heating network, illustrating an exemplary embodiment of this application. Figure 2 This is a schematic diagram of the structure of an insulated pipe for a heating network, shown in yet another exemplary embodiment of this application. Figure 3 This is a schematic diagram of the structure of an insulated pipe for a heating network, as shown in another exemplary embodiment of this application. Figure 4 This is a circuit block diagram illustrating the relationship between a thermistor, heating wire, first external power supply, second external power supply, and pipeline temperature monitoring controller, as shown in an exemplary embodiment of this application. Figure 5 This is a schematic diagram of an insulated pipe for a heating network, illustrating another exemplary embodiment of this application. Figure 6 This is a schematic diagram illustrating a heat dissipation channel and a heat insulation channel in an exemplary embodiment of this application.

[0019] Figure label: 1-Pipe body; 2-Anti-corrosion layer; 3-Graphene layer; 4-Carbon fiber layer; 5-Insulation layer; 6-Waterproof layer; 7-Protective layer; 8-Thermal sensor; 51-Microencapsulated phase change material coating; 52-Inorganic phase change nano-coating; 53-Mesoporous silicon-based shaped phase change material thermal insulation coating; 71-Shock-damping layer; 72-Protective tube; 73-Outer anti-corrosion layer; 74-Outer waterproof layer. DETAILED DESCRIPTION

[0020] The present application is described in greater detail by the following specific examples. Other advantages and benefits of the present application will become apparent to those skilled in the art upon reading and understanding the following specification. The present application may be implemented or carried out in another different way, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. The following examples and features in the examples can be combined with each other without conflict.

[0021] It should be noted that the diagrams provided in the following examples only schematically illustrate the basic concept of the present application, and the drawings only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component may be a random change in shape, number and proportion, and the layout of the components may be more complex.

[0022] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details, and in other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail, in order to avoid making the embodiments of the present application difficult to understand.

[0023] The implementation details of the technical solutions of the embodiments of the present application are described in detail as follows: Figure 1 is a structural schematic diagram of a heat preservation pipeline for a heat supply pipe network according to an exemplary embodiment of the present application, referring to Figure 1 As shown in the figure, the heat preservation pipeline at least includes: a pipeline body 1, a corrosion protection layer 2, a heat preservation layer 5, a waterproof layer 6 and a protection layer 7, which are described in detail as follows: the pipeline body 1 is used to transport hot water or steam; the corrosion protection layer 2 is laid on the outer surface of the pipeline body 1, and is used to block the contact between the pipeline body 1 and the corrosive medium in the external environment; the heat preservation layer 5 is laid on the outer surface of the corrosion protection layer 2, and is used to block the heat exchange between the pipeline body 1 and the external environment; the heat preservation layer 5 includes: a phase change material layer; the waterproof layer 6 is laid on the outer surface of the heat preservation layer 5, and is used to block the contact between the heat preservation layer 5, the corrosion protection layer 2 and the moisture in the external environment; the protection layer 7 is sleeved on the outer surface of the waterproof layer 6, and is used to protect the pipeline body 1, the corrosion protection layer 2, the heat preservation layer 5 and the waterproof layer 6.

[0024] In an embodiment of the present application, the anticorrosive layer 2 can be a polyethylene (PE) coating, a three-layer polyethylene (3PE) composite structure coating, or a composite structure of an epoxy resin coating combined with a glass flake coating, etc. The three-layer polyethylene (3PE) composite structure coating includes a first layer of epoxy powder (thickness greater than 100 microns), a second layer of adhesive (thickness between 170 and 250 microns), and a third layer of polyethylene (thickness between 1.8 and 3.7 millimeters). The three-layer polyethylene (3PE) composite structure coating ensures high adhesion and chemical resistance of the anticorrosive layer 2 to the heat-insulating pipeline, and has good mechanical properties, impact resistance, and weather resistance, thereby providing reliable anticorrosive protection for the heat-insulating pipeline. The composite ratio of the epoxy resin coating and the glass flake coating needs to be determined comprehensively according to the specific environment of the pipeline, the characteristics of the transported medium, and the expected service life, etc. For example, the epoxy resin coating serves as a base (the thickness can account for 60% to 70% of the total thickness of the composite layer), and the glass flake coating is coated on the epoxy resin coating to form a dense protective layer (the thickness accounts for about 30% to 40%).

[0025] In another embodiment of the present application, the waterproof layer 6 can be made of a polyethylene film or an aluminum foil composite film, etc. The aluminum foil composite film is composed of an aluminum foil and one or more layers of polyethylene film, or one or more layers of polyester film.

[0026] In an embodiment of the present application, the pipeline body 1, the anticorrosive layer 2, the heat-insulating layer 5, the waterproof layer 6, and the protective layer 7 are arranged to play the roles of anticorrosion, waterproofing, and heat insulation of the pipeline body 1, and can reduce the damage of external force to the pipeline body 1, the anticorrosive layer 2, the heat-insulating layer 5, and the waterproof layer 6. Meanwhile, the heat-insulating layer 5 is made of a phase change material, which can absorb and release the heat released by the pipeline body 1, thereby prolonging the service life of the heat-insulating layer 5, reducing the maintenance cost, and improving the heat-insulating effect of the pipeline body 1.

[0027] In an embodiment of the present application, the thickness of the anticorrosive layer 2, the thickness of the heat-insulating layer 5, and the thickness of the waterproof layer 6 can be adjusted according to actual conditions. For example, the thickness of the anticorrosive layer 2 is at least 80 microns, the thickness of the heat-insulating layer 5 is 8 to 9 millimeters, and the thickness of the waterproof layer 6 is not less than 1.2 millimeters.

[0028] Figure 2 is a structural schematic view of a heat-insulating pipeline for a heat supply pipeline network according to another exemplary embodiment of the present application. Referring to Figure 2As shown, the heat preservation pipeline for heat supply pipeline network further comprises: a carbon fiber layer 4 arranged between the anticorrosive layer 2 and the heat preservation layer 5, used for heating the pipeline body 1 when the temperature of the pipeline body 1 is lower than a preset temperature threshold; and a graphene layer 3 arranged between the anticorrosive layer 2 and the carbon fiber layer 4, used for conducting the heat generated by the carbon fiber layer 4 to the pipeline body 1.

[0029] In an embodiment of the present application, the temperature of the pipeline body 1 is represented by the temperature of the carbon fiber layer 4 or the graphene layer 3, the carbon fiber layer 4 adopts carbon fiber woven cloth (for example, T700 grade carbon fiber) or carbon fiber prepreg, and the graphene layer 3 adopts multi-layer graphene film or graphene modified epoxy coating, which is composed of epoxy resin, graphene dispersion liquid, curing agent, pigment and filler, and auxiliary agent, for example, the proportion of epoxy resin is 40%-70%, the proportion of graphene dispersion liquid is 0.1%-1.5%, the proportion of curing agent (for example, triethylenetetramine) is 0.3%-2% of triethylenetetramine, the proportion of pigment and filler (for example, barium sulfate, talc) is 3%-15%, and the total proportion of auxiliary agent (for example, emulsifier, dispersant, wetting agent, leveling agent, defoaming agent) is 1%-10%.

[0030] In an embodiment of the present application, the graphene layer 3 has uniform heat conductivity, and in the process of heating the pipeline body 1 by the carbon fiber layer 4, the graphene layer 3 uniformly transmits the heat generated by the carbon fiber layer 4 to the outside of the pipeline body 1, thereby strengthening the heat preservation effect of the pipeline body 1 by increasing the temperature of the outside of the pipeline body 1.

[0031] Figure 3 is a structural schematic view of a heat preservation pipeline for heat supply pipeline network according to still another exemplary embodiment of the present application, in which Figure 3 In the embodiment, the carbon fiber layer 4 is provided with an electric heating wire, the electric heating wire is connected with a thermosensitive sensor 8, the thermosensitive sensor 8 is connected with a first external power supply, the thermosensitive sensor 8 is arranged between the carbon fiber layer 4 and the graphene layer 3, the thermosensitive sensor 8 is used for connecting the first external power supply with the electric heating wire when the temperature of the pipeline body 1 is lower than a preset temperature threshold, and disconnecting the connection between the first external power supply and the electric heating wire when the temperature of the pipeline body 1 is greater than or equal to the preset temperature threshold.

[0032] In an embodiment of the present application, the heating wire can be arranged in parallel and equidistant in the carbon fiber layer 4, or can be laid in a mesh or cross-mesh form in the carbon fiber layer 4. The thermal sensor 8 is a thin-film thermal sensor with a positive temperature coefficient characteristic. The first external power supply is arranged outside the heat preservation pipeline, which can be a power supply for a central heating system, or can be another power supply. The preset temperature threshold can be a temperature value, or can be a temperature range. The thermal sensor is used to connect the first external power supply to the heating wire when the temperature of the pipeline body 1 is lower than the minimum value of the preset temperature range, and is used to disconnect the first external power supply from the heating wire when the temperature of the pipeline body 1 is greater than the maximum value of the preset temperature range. By changing the resistance of the thermal sensor 8 in different temperature ranges, the connection between the first external power supply and the heating wire is realized, so as to achieve the purpose of improving the heat preservation effect of the pipeline body 1 by increasing the temperature outside the pipeline body 1.

[0033] Figure 4 is a circuit module diagram between the thermal sensor, the heating wire, the first external power supply, the second external power supply and the pipeline temperature monitoring controller shown in an exemplary embodiment of the present application, in which Figure 4 the thermal sensor 8 is a thin-film thermal sensor, the thin-film thermal sensor is connected with the second external power supply, and the thin-film thermal sensor is connected with the pipeline temperature monitoring controller; the pipeline temperature monitoring controller is used to control the first external power supply to stop supplying power when the temperature of the pipeline body 1 is greater than or equal to the preset temperature threshold, and is used to control the first external power supply to resume supplying power when the temperature of the pipeline body 1 is less than the preset temperature threshold.

[0034] In an embodiment of the present application, the pipeline temperature monitoring controller adopts an MCU (Microcontroller Unit) controller, the second external power supply is arranged outside the heat preservation pipeline and belongs to a different power supply from the first external power supply. The second external power supply is connected with the thin-film thermal sensor through a DC-to-DC converter (Direct Current to Direct Current Converter) for supplying power to the thin-film thermal sensor, thereby ensuring that the thin-film thermal sensor can continuously monitor the temperature of the pipeline body 1. The temperature of the pipeline body 1 monitored by the thin-film thermal sensor is sent to the pipeline temperature monitoring controller, which is connected with a display, a server or a staff's mobile terminal. The pipeline temperature monitoring controller can send the temperature of the pipeline body 1 to the display, so as to facilitate the staff to observe the temperature data of the pipeline body 1. The pipeline temperature monitoring controller can send the temperature of the pipeline body 1 to the server, so as to facilitate the staff to check, record and analyze, etc. The pipeline temperature monitoring controller can send the temperature of the pipeline body 1 to the staff's mobile terminal, so as to facilitate the staff to timely obtain the temperature data of the pipeline body 1.

[0035] In an embodiment of the present application, the first external power supply is connected with the thin-film thermal sensor through a DC-to-DC converter (Direct Current to Direct Current Converter). When the temperature outside the pipeline body 1 is greater than or equal to a preset temperature threshold, the connection between the first external power supply and the heating wire is disconnected, and at the same time, the first external power supply is controlled to stop supplying power. When the temperature of the pipeline body 1 is lower than the preset temperature threshold, the first external power supply is connected with the heating wire, and at the same time, the first external power supply is controlled to resume supplying power. The stop and resumption of the power supply of the first external power supply are realized by the working state of the DC-to-DC converter. For example, when the DC-to-DC converter is working, the first external power supply resumes supplying power; when the DC-to-DC converter is in hibernation or shutdown, the first external power supply stops supplying power. Through the control action of the pipeline temperature monitoring controller and the positive temperature coefficient characteristic of the thin-film thermal sensor, the reliability of the connection or disconnection between the first external power supply and the heating wire is ensured.

[0036] In an embodiment of the present application, the phase change material layer includes any one of the following: a microencapsulated phase change material coating 51, an inorganic phase change nano coating 52, and a mesoporous silica-based shaped phase change material thermal insulation coating 53; when the carbon fiber layer 4 does not heat the pipeline body 1, a thermal insulation channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the phase change material layer; when the carbon fiber layer 4 heats the pipeline body 1, a thermal insulation channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the phase change material layer; a heating channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, and the carbon fiber layer 4; and a thermal insulation channel is formed between the carbon fiber layer 4 and the phase change material layer.

[0037] In an embodiment of the present application, the microencapsulated phase change material coating 51 is a coating in which microcapsules containing phase change materials such as paraffin and fatty acids are compounded with a resin matrix. The microcapsules contain phase change materials such as paraffin and fatty acids as core materials, and synthetic polymers such as melamine-formaldehyde resin, polyurethane, polymethyl methacrylate, and polystyrene, and natural polymers such as gelatin and gum arabic as wall materials. The microcapsules are dispersed uniformly in the resin matrix to form the coating. The microencapsulated phase change material coating 51 adjusts the temperature on the outside of the pipeline body 1 by phase change endothermic or exothermic, and reduces the thermal stress damage to the pipeline body 1 caused by temperature fluctuations on the outside of the pipeline body 1.

[0038] In an embodiment of the present application, the inorganic phase change nano coating 52 is a nano-silicon dioxide and paraffin composite coating, or a nano-alumina and fatty acid composite coating. The nano-silicon dioxide and paraffin composite coating contains paraffin as a phase change material, nano-silicon dioxide as a reinforcing phase, a resin matrix as a continuous phase, and dispersants, thickeners, defoamers, and anti-settling agents as auxiliary agents. The nano-alumina and fatty acid composite coating contains nano-alumina as a reinforcing phase, fatty acid as a phase change material, a resin matrix as a continuous phase, and dispersants, thickeners, defoamers, and anti-settling agents as auxiliary agents. The inorganic phase change nano coating 52 enhances the thermal conductivity of the phase change material by the high specific surface area of the nano-particles, and improves the temperature control response speed on the outside of the pipeline body 1.

[0039] In an embodiment of the present application, the mesoporous silica-based shaped phase change material thermal insulation coating 53 is a mesoporous silica (SiO2), polyethylene glycol (PEG) composite coating or a mesoporous silica (SiO2), stearic acid composite coating, a mesoporous silica (SiO2), polyethylene glycol (PEG) composite coating mainly using mesoporous silica as a porous carrier, polyethylene glycol as a film-forming aid, a resin matrix as a continuous phase, and a dispersant, a leveling agent, a thickening agent, etc. as supplementary aids to form; the mesoporous silica (SiO2), stearic acid composite coating mainly includes mesoporous silica, stearic acid, film-forming substances and additives, etc. The mesoporous silica-based shaped phase change material thermal insulation coating 53 has the effect of reducing heat loss of the pipeline body 1 and improving the overall thermal insulation performance of the pipeline body 1.

[0040] In an embodiment of the present application, when the carbon fiber layer 4 does not heat the pipeline body 1, a heat dissipation channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, when the phase change material layer undergoes a solid-liquid phase change (for example, when the temperature on the outside of the pipeline body 1 is above 70 degrees Celsius), heat is absorbed through the heat dissipation channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, delaying the temperature rise on the outside of the pipeline body 1; when the phase change material layer undergoes a liquid-solid phase change (for example, when the temperature on the outside of the pipeline body 1 is below 30 degrees Celsius), heat is released through the heat insulation channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, delaying the temperature drop on the outside of the pipeline body 1, improving the thermal insulation effect on the pipeline body 1.

[0041] In an embodiment of the present application, when the carbon fiber layer 4 heats the pipeline body 1, a heat dissipation channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, when the phase change material layer undergoes a solid-liquid phase change, heat is absorbed through the heat dissipation channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, delaying the temperature rise on the outside of the pipeline body 1; when the phase change material layer undergoes a liquid-solid phase change, heat is released through the heat insulation channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the phase change material layer, delaying the temperature drop on the outside of the pipeline body 1, improving the thermal insulation effect on the pipeline body 1; and the pipeline body 1 is heated through the heating channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3 and the carbon fiber layer 4, which is conducive to the regulation of the temperature on the outside of the pipeline body 1 and avoids excessively low temperature on the outside of the pipeline body 1; when the phase change material layer undergoes a solid-liquid phase change, it can also absorb heat through the heat dissipation channel between the carbon fiber layer 4 and the phase change material layer, and when it undergoes a liquid-solid phase change, it can release heat through the heat insulation channel between the carbon fiber layer 4 and the phase change material layer, further enhancing the thermal insulation effect on the pipeline body 1.

[0042] In an embodiment of the present application, the heat dissipation channels and the heat preservation channels cooperate with each other to enhance the heat preservation effect on the pipeline body 1 and the temperature regulation effect on the outside of the pipeline body 1.

[0043] In an embodiment of the present application, the phase change material layer includes a microencapsulated phase change material coating 51 and an inorganic phase change nano coating 52; the microencapsulated phase change material coating 51 is applied to the outer surface of the carbon fiber layer 4, and the inorganic phase change nano coating 52 is applied to the outer surface of the microencapsulated phase change material coating 51; when the carbon fiber layer 4 does not heat the pipeline body 1, heat preservation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nano coating 52; heat preservation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the microencapsulated phase change material coating 51; and heat preservation channels are formed between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; when the carbon fiber layer 4 heats the pipeline body 1, heat preservation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nano coating 52; heat preservation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the microencapsulated phase change material coating 51; heat preservation channels are formed between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; a heating channel is formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, and the carbon fiber layer 4; a heat preservation channel is formed between the carbon fiber layer 4 and the microencapsulated phase change material coating 51; and a heat preservation channel is formed between the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nano coating 52.

[0044] In an embodiment of the present application, the microencapsulated phase change material has a high heat storage density, and in combination with the rapid heat conduction of the inorganic nano coating, the heat on the outside of the pipeline body 1 can be quickly absorbed and released, thereby quickly achieving temperature regulation on the outside of the pipeline body 1.

[0045] In an embodiment of the present application, when the carbon fiber layer 4 does not heat the pipeline body 1, the inorganic phase change nano coating 52 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channel formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when a liquid-solid phase change occurs through the heat preservation channel formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, thereby heat-insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channel between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when a liquid-solid phase change occurs through the heat preservation channel between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby heat-insulating the pipeline body 1; the heat dissipated by the microencapsulated phase change material coating 51 can be transferred to the inorganic phase change nano coating 52 through the heat dissipation channel between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 for absorption, and the inorganic phase change nano coating 52 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channel between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, further enhancing the heat-insulating effect on the pipeline body 1.

[0046] In an embodiment of the present application, when the carbon fiber layer 4 heats the pipeline body 1, the inorganic phase change nano coating 52 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, thereby insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby insulating the pipeline body 1; the heat dissipated by the microencapsulated phase change material coating 51 can be transferred to the inorganic phase change nano coating 52 through the heat dissipation channels between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 for absorption, and the inorganic phase change nano coating 52 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channels between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; and the pipeline body 1 is heated through the heating channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3 and the carbon fiber layer 4, which is conducive to regulating the temperature on the outside of the pipeline body 1 and avoiding excessively low temperature on the outside of the pipeline body 1; the microencapsulated phase change material coating 51 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4 and the microencapsulated phase change material coating 51 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4 and the microencapsulated phase change material coating 51 when it undergoes a liquid-solid phase change; the inorganic phase change nano coating 52 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 when it undergoes a liquid-solid phase change, thereby further enhancing the insulation effect on the pipeline body 1.

[0047] In an embodiment of the present application, the multiple heat dissipation channels and the multiple heat preservation channels cooperate with each other to enhance the insulation effect on the pipeline body 1 and the temperature regulation effect on the outside of the pipeline body 1.

[0048] In an embodiment of the present application, the phase change material layer comprises: a microencapsulated phase change material coating 51 and a mesoporous silica-based shaped phase change material thermal insulation coating 53; the microencapsulated phase change material coating 51 is applied to the outer surface of the carbon fiber layer 4, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 is applied to the outer surface of the microencapsulated phase change material coating 51; when the carbon fiber layer 4 does not heat the pipeline body 1, the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; and the thermal insulation channels are formed between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; when the carbon fiber layer 4 heats the pipeline body 1, the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the thermal insulation channels are formed between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the heating channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3 and the carbon fiber layer 4; the thermal insulation channels are formed between the carbon fiber layer 4 and the microencapsulated phase change material coating 51; and the thermal insulation channels are formed between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53.

[0049] In an embodiment of the present application, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53 are combined, which improves the structural stability of the thermal insulation layer 5 and improves the heat storage capacity, heat absorption capacity and heat release capacity of the thermal insulation layer 5, thereby strengthening the thermal insulation capacity of the pipeline body 1.

[0050] In an embodiment of the present application, when the carbon fiber layer 4 does not heat the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby insulating the pipeline body 1; the heat dissipated by the microencapsulated phase change material coating 51 can be transferred to the mesoporous silica-based shaped phase change material thermal insulation coating 53 through the heat dissipation channels between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channels between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, further enhancing the insulation effect on the pipeline body 1.

[0051] In an embodiment of the present application, when the carbon fiber layer 4 heats the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby insulating the pipeline body 1; the heat dissipated by the microencapsulated phase change material coating 51 can be transferred to the mesoporous silica-based shaped phase change material thermal insulation coating 53 through the heat dissipation channels between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channels between the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; and the pipeline body 1 is heated through the heating channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3 and the carbon fiber layer 4, which is conducive to regulating the temperature on the outside of the pipeline body 1 and avoiding excessively low temperature on the outside of the pipeline body 1; the microencapsulated phase change material coating 51 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4 and the microencapsulated phase change material coating 51 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4 and the microencapsulated phase change material coating 51 when it undergoes a liquid-solid phase change; and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the mesoporous silica-based shaped phase change material thermal insulation coating 53 when it undergoes a liquid-solid phase change, thereby further enhancing the insulation effect on the pipeline body 1.

[0052] In an embodiment of the present application, the multiple heat dissipation channels and the multiple heat preservation channels cooperate with each other to enhance the insulation effect on the pipeline body 1 and the temperature regulation effect on the outside of the pipeline body 1.

[0053] Figure 5is a schematic diagram of a heat preservation pipeline for a heat supply pipeline according to another example embodiment of the present application, Figure 6 is a schematic diagram of a heat dissipation channel and a heat preservation channel according to an example embodiment of the present application, with reference to Figure 5 and Figure 6 The phase change material layer comprises: an inorganic phase change nano coating 52 and a mesoporous silica-based shaped phase change material heat preservation coating 53; the inorganic phase change nano coating 52 is laid on the outer surface of the carbon fiber layer 4, and the mesoporous silica-based shaped phase change material heat preservation coating 53 is laid on the outer surface of the inorganic phase change nano coating 52; when the carbon fiber layer 4 does not heat the pipeline body 1, a heat preservation channel is formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53; a heat preservation channel is formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the inorganic phase change nano coating 52; and a heat preservation channel is formed between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53; when the carbon fiber layer 4 heats the pipeline body 1, a heat preservation channel is formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53; a heat preservation channel is formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the inorganic phase change nano coating 52; a heat preservation channel is formed between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53; a heating channel is formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3 and the carbon fiber layer 4; a heat preservation channel is formed between the carbon fiber layer 4 and the inorganic phase change nano coating 52; and a heat preservation channel is formed between the carbon fiber layer 4, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53.

[0054] In an embodiment of the present application, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53 are combined, which improves the structural stability of the heat preservation layer 5 and improves the heat storage capacity, heat absorption capacity and heat release capacity of the heat preservation layer 5, thereby strengthening the heat preservation capacity of the pipeline body 1.

[0055] In an embodiment of the present application, when the carbon fiber layer 4 does not heat the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels formed between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby insulating the pipeline body 1; the inorganic phase change nano coating 52 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels between the pipeline body 1, the anticorrosive layer 2, the graphene layer 3, the carbon fiber layer 4 and the inorganic phase change nano coating 52, thereby insulating the pipeline body 1; the heat dissipated by the inorganic phase change nano coating 52 can be transferred to the mesoporous silica-based shaped phase change material thermal insulation coating 53 through the heat dissipation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53 for absorption, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can release heat to the inorganic phase change nano coating 52 through the heat preservation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, further enhancing the insulation effect on the pipeline body 1.

[0056] In an embodiment of the present application, when the carbon fiber layer 4 heats the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the inorganic phase change nano coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby insulating the pipeline body 1; the inorganic phase change nano coating 52 absorbs heat when it undergoes a solid-liquid phase change through the heat dissipation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when it undergoes a liquid-solid phase change through the heat preservation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the inorganic phase change nano coating 52, thereby insulating the pipeline body 1; the heat dissipated by the inorganic phase change nano coating 52 can be transferred to the mesoporous silica-based shaped phase change material thermal insulation coating 53 through the heat dissipation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53 for absorption, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can release heat to the inorganic phase change nano coating 52 through the heat preservation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; and the pipeline body 1 is heated through the heating channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, and the carbon fiber layer 4, which is conducive to regulating the temperature on the outside of the pipeline body 1 and avoiding excessively low temperature on the outside of the pipeline body 1; the inorganic phase change nano coating 52 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4 and the inorganic phase change nano coating 52 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4 and the inorganic phase change nano coating 52 when it undergoes a liquid-solid phase change; the mesoporous silica-based shaped phase change material thermal insulation coating 53 can also absorb heat through the heat dissipation channels between the carbon fiber layer 4, the inorganic phase change nano coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 when it undergoes a solid-liquid phase change, and release heat through the heat preservation channels between the carbon fiber layer 4, the inorganic phase change nano coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 when it undergoes a liquid-solid phase change, thereby further enhancing the insulation effect on the pipeline body 1.

[0057] In an embodiment of the present application, the multiple heat dissipation channels and the multiple heat preservation channels cooperate with each other to enhance the insulation effect on the pipeline body 1 and the temperature regulation effect on the outside of the pipeline body 1.

[0058] In an embodiment of the present application, the phase change material layer comprises: a microencapsulated phase change material coating 51, an inorganic phase change nanometer coating 52, and a mesoporous silica-based shaped phase change material thermal insulation coating 53; the microencapsulated phase change material coating 51 is laid on the outer surface of the carbon fiber layer 4, the inorganic phase change nanometer coating 52 is laid on the outer surface of the microencapsulated phase change material coating 51; the mesoporous silica-based shaped phase change material thermal insulation coating 53 is laid on the outer surface of the inorganic phase change nanometer coating 52; when the carbon fiber layer 4 does not heat the pipeline body 1, the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nanometer coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nanometer coating 52; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the microencapsulated phase change material coating 51; the thermal insulation channels are formed between the microencapsulated phase change material coating 51 and the inorganic phase change nanometer coating 52; and the thermal insulation channels are formed between the inorganic phase change nanometer coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; when the carbon fiber layer 4 heats the pipeline body 1, the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nanometer coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nanometer coating 52; the thermal insulation channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, and the microencapsulated phase change material coating 51; the thermal insulation channels are formed between the microencapsulated phase change material coating 51 and the inorganic phase change nanometer coating 52; and the thermal insulation channels are formed between the inorganic phase change nanometer coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the heating channels are formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, and the carbon fiber layer 4; the thermal insulation channels are formed between the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the thermal insulation channels are formed between the carbon fiber layer 4, the microencapsulated phase change material coating 51, and the inorganic phase change nanometer coating 52; and the thermal insulation channels are formed between the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nanometer coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53.

[0059] In an embodiment of the present application, the microencapsulated phase change material coating 51, the inorganic phase change nanometer coating 52, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 cooperate to improve the structural stability of the thermal insulation layer 5, and strengthen the heat storage capacity, heat absorption capacity, and heat release capacity of the thermal insulation layer 5, thereby strengthening the heat preservation capacity of the pipeline body 1.

[0060] When the carbon fiber layer 4 does not heat the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when a liquid-solid phase change occurs through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby insulating the pipeline body 1; the inorganic phase change nano coating 52 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when a liquid-solid phase change occurs through the heat preservation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, thereby insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when a liquid-solid phase change occurs through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby insulating the pipeline body 1. The heat dissipation of the microencapsulated phase change material coating 51 can be transferred to the inorganic phase change nano coating 52 for absorption through the heat dissipation channels between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, and the inorganic phase change nano coating 52 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channels between the inorganic phase change nano coating 52 and the microencapsulated phase change material coating 51, thereby further enhancing the insulation effect on the pipeline body 1; the heat dissipation of the inorganic phase change nano coating 52 can be transferred to the mesoporous silica-based shaped phase change material thermal insulation coating 53 for absorption through the heat dissipation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, and the mesoporous silica-based shaped phase change material thermal insulation coating 53 can release heat to the inorganic phase change nano coating 52 through the heat preservation channels between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby further enhancing the insulation effect on the pipeline body 1.

[0061] In an embodiment of the present application, when the carbon fiber layer 4 heats the pipeline body 1, the mesoporous silica-based shaped phase change material thermal insulation coating 53 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53; the mesoporous silica-based shaped phase change material thermal insulation coating 53 releases heat when a liquid-solid phase change occurs through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material thermal insulation coating 53, thereby heat-insulating the pipeline body 1; the inorganic phase change nano coating 52 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52; the inorganic phase change nano coating 52 releases heat when a liquid-solid phase change occurs through the heat preservation channels between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, thereby heat-insulating the pipeline body 1; the microencapsulated phase change material coating 51 absorbs heat when a solid-liquid phase change occurs through the heat dissipation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51; the microencapsulated phase change material coating 51 releases heat when a liquid-solid phase change occurs through the heat preservation channels formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3, the carbon fiber layer 4 and the microencapsulated phase change material coating 51, thereby heat-insulating the pipeline body 1.The heat dissipation of the microencapsulated phase change material coating 51 can be transmitted to the inorganic phase change nano coating 52 through the heat dissipation channel between the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 for absorption, the inorganic phase change nano coating 52 can release heat to the microencapsulated phase change material coating 51 through the heat preservation channel between the inorganic phase change nano coating 52 and the microencapsulated phase change material coating 51, further strengthening the heat preservation effect on the pipeline body 1; the heat dissipation of the inorganic phase change nano coating 52 can be transmitted to the mesoporous silica-based shaped phase change material heat preservation coating 53 through the heat dissipation channel between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53 for absorption, the mesoporous silica-based shaped phase change material heat preservation coating 53 can release heat to the inorganic phase change nano coating 52 through the heat preservation channel between the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53, further strengthening the heat preservation effect on the pipeline body 1; and the pipeline body 1 is heated through the heating channel formed between the pipeline body 1, the corrosion-resistant layer 2, the graphene layer 3 and the carbon fiber layer 4, which is conducive to the temperature regulation of the outside of the pipeline body 1 and avoids the temperature of the outside of the pipeline body 1 being too low; when the microencapsulated phase change material coating 51 undergoes solid-liquid phase change, it can also absorb heat through the heat dissipation channel between the carbon fiber layer 4 and the microencapsulated phase change material coating 51, and release heat through the heat preservation channel between the carbon fiber layer 4 and the microencapsulated phase change material coating 51 when it undergoes liquid-solid phase change; when the inorganic phase change nano coating 52 undergoes solid-liquid phase change, it can also absorb heat through the heat dissipation channel between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52, and release heat through the heat preservation channel between the carbon fiber layer 4, the microencapsulated phase change material coating 51 and the inorganic phase change nano coating 52 when it undergoes liquid-solid phase change; the mesoporous silica-based shaped phase change material heat preservation coating 53 can also absorb heat through the heat dissipation channel between the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53, and release heat through the heat preservation channel between the carbon fiber layer 4, the microencapsulated phase change material coating 51, the inorganic phase change nano coating 52 and the mesoporous silica-based shaped phase change material heat preservation coating 53 when it undergoes liquid-solid phase change, further strengthening the heat preservation effect on the pipeline body 1.

[0062] In an embodiment of the present application, the multiple heat dissipation channels and the multiple heat preservation channels cooperate with each other to strengthen the heat preservation effect on the pipeline body 1 and the temperature regulation effect on the outside of the pipeline body 1.

[0063] In an embodiment of the present application, the protective layer 7 comprises: a shock absorption layer 71 applied to the outer surface of the waterproof layer 6; a protective pipe 72 sleeved on the outer surface of the shock absorption layer 71, the outer surface of the protective pipe 72 being coated with an outer corrosion-resistant layer 73 and an outer waterproof layer 74.

[0064] In an embodiment of the present application, the shock-absorbing layer 71 can be made of rubber material or polyurethane elastomer, etc., for protecting the pipe body 1, the anticorrosive layer 2, the thermal insulation layer 5 and the waterproof layer 6, so as to reduce the damage to the pipe body 1, the anticorrosive layer 2, the thermal insulation layer 5 and the waterproof layer 6 caused by external force; the outer anticorrosive layer 73 is made of silver powder coating or epoxy resin coating, etc., for anticorrosion of the protection pipe 72; the outer waterproof layer 74 is made of polyethylene waterproof layer 6, etc., for waterproof of the protection pipe 72; and the protection pipe 72 is made of steel pipe.

[0065] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present application shall be covered by the claims of the present application.

Claims

1. An insulated pipe for a heating pipe network, characterized in that The heat preservation pipeline comprises: a pipeline body for conveying hot water or steam; a corrosion protection layer applied on the outer surface of the pipeline body for preventing the pipeline body from contacting corrosive medium in the external environment; a heat preservation layer applied on the outer surface of the corrosion protection layer for preventing heat exchange between the pipeline body and the external environment; the heat preservation layer comprises a phase change material layer; a waterproof layer applied on the outer surface of the heat preservation layer for preventing the heat preservation layer, the corrosion protection layer and the external environment from contacting moisture; a protective layer sleeved on the outer surface of the waterproof layer for protecting the pipeline body, the corrosion protection layer, the heat preservation layer and the waterproof layer.

2. The insulated pipe for a heating pipe network according to claim 1, characterized in that, The heat preservation pipeline further comprises: a carbon fiber layer arranged between the corrosion protection layer and the heat preservation layer for heating the pipeline body when the temperature of the pipeline body is lower than a preset temperature threshold; a graphene layer arranged between the corrosion protection layer and the carbon fiber layer for conducting heat generated by the carbon fiber layer to the pipeline body.

3. The insulated pipe for a heating pipe network according to claim 2, characterized in that The carbon fiber layer is provided with an electric heating wire, the electric heating wire is connected with a thermal sensor, the thermal sensor is connected with a first external power supply, and the thermal sensor is arranged between the carbon fiber layer and the graphene layer; The thermal sensor is used for connecting the first external power supply with the electric heating wire when the temperature of the pipeline body is lower than the preset temperature threshold, and disconnecting the first external power supply and the electric heating wire when the temperature of the pipeline body is greater than or equal to the preset temperature threshold.

4. The insulated pipe for a heating pipe network according to claim 3, characterized in that The thermal sensor is a thin film thermal sensor, the thin film thermal sensor is connected with a second external power supply, and the thin film thermal sensor is connected with a pipeline temperature monitoring controller; The pipeline temperature monitoring controller is used for controlling the first external power supply to stop power supply when the temperature of the pipeline body is greater than or equal to the preset temperature threshold, and is used for controlling the first external power supply to restore power supply when the temperature of the pipeline body is less than the preset temperature threshold.

5. The insulated pipe for a heating pipe network according to claim 2, characterized in that, The phase change material layer comprises: any one of a microencapsulated phase change material coating, an inorganic phase change nano coating and a mesoporous silica-based shaped phase change material heat preservation coating; when the carbon fiber layer does not heat the pipeline body, a heat preservation channel is formed between the pipeline body, the corrosion protection layer, the graphene layer, the carbon fiber layer and the phase change material layer; when the carbon fiber layer heats the pipeline body, a heat preservation channel is formed between the pipeline body, the corrosion protection layer, the graphene layer, the carbon fiber layer and the phase change material layer, a heating channel is formed between the pipeline body, the corrosion protection layer, the graphene layer and the carbon fiber layer, and a heat preservation channel is formed between the carbon fiber layer and the phase change material layer.

6. The insulated pipe for a heating pipe network according to claim 2, characterized in that The phase change material layer comprises: a microencapsulated phase change material coating and an inorganic phase change nano coating; the microencapsulated phase change material coating is applied on the outer surface of the carbon fiber layer, and the inorganic phase change nano coating is applied on the outer surface of the microencapsulated phase change material coating. When the carbon fiber layer does not heat the pipeline body, an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano coating; an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; and an insulation passage is formed between the microencapsulated phase change material coating and the inorganic phase change nano coating; When the carbon fiber layer heats the pipeline body, an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano coating; an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; an insulation passage is formed between the microencapsulated phase change material coating and the inorganic phase change nano coating; a heating passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, and the carbon fiber layer; an insulation passage is formed between the carbon fiber layer and the microencapsulated phase change material coating; and an insulation passage is formed between the carbon fiber layer, the microencapsulated phase change material coating, and the inorganic phase change nano coating.

7. The insulated pipe for a heating pipe network according to claim 2, characterized in that, The phase change material layer comprises: a microencapsulated phase change material coating and a mesoporous silica-based shaped phase change material insulation coating; the microencapsulated phase change material coating is applied to an outer surface of the carbon fiber layer, and the mesoporous silica-based shaped phase change material insulation coating is applied to an outer surface of the microencapsulated phase change material coating; When the carbon fiber layer does not heat the pipeline body, an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the mesoporous silica-based shaped phase change material insulation coating; an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; and an insulation passage is formed between the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material insulation coating; When the carbon fiber layer heats the pipeline body, an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, and the mesoporous silica-based shaped phase change material insulation coating; an insulation passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, the carbon fiber layer, and the microencapsulated phase change material coating; an insulation passage is formed between the microencapsulated phase change material coating and the mesoporous silica-based shaped phase change material insulation coating; a heating passage is formed between the pipeline body, the anticorrosion layer, the graphene layer, and the carbon fiber layer; an insulation passage is formed between the carbon fiber layer and the microencapsulated phase change material coating; and an insulation passage is formed between the carbon fiber layer, the microencapsulated phase change material coating, and the mesoporous silica-based shaped phase change material insulation coating.

8. The insulated pipe for a heating pipe network according to claim 2, characterized in that, The phase change material layer comprises: The inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; The inorganic phase change nanometer coating is laid on the outer surface of the carbon fiber layer, and the mesoporous silica-based shaped phase change material thermal insulation coating is laid on the outer surface of the inorganic phase change nanometer coating; When the carbon fiber layer does not heat the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the inorganic phase change nanometer coating; and the thermal insulation channels are formed among the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; When the carbon fiber layer heats the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the inorganic phase change nanometer coating; the thermal insulation channels are formed among the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the heating channels are formed among the pipeline body, the anticorrosive layer, the graphene layer and the carbon fiber layer; the thermal insulation channels are formed among the carbon fiber layer and the inorganic phase change nanometer coating; and the thermal insulation channels are formed among the carbon fiber layer, the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating.

9. The insulated pipe for a heating pipe network according to claim 2, characterized in that, The phase change material layer comprises: The microencapsulated phase change material coating, the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; The microencapsulated phase change material coating is laid on the outer surface of the carbon fiber layer, the inorganic phase change nanometer coating is laid on the outer surface of the microencapsulated phase change material coating, and the mesoporous silica-based shaped phase change material thermal insulation coating is laid on the outer surface of the inorganic phase change nanometer coating; When the carbon fiber layer does not heat the pipeline body, the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nanometer coating; the thermal insulation channels are formed among the pipeline body, the anticorrosive layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; the thermal insulation channels are formed among the microencapsulated phase change material coating and the inorganic phase change nanometer coating; and the thermal insulation channels are formed among the inorganic phase change nanometer coating and the mesoporous silica-based shaped phase change material thermal insulation coating; In the process of heating the pipe body by the carbon fiber layer, heat insulation channels are formed between the pipe body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material insulation coating; heat insulation channels are formed between the pipe body, the anticorrosion layer, the graphene layer, the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nano coating; heat insulation channels are formed between the pipe body, the anticorrosion layer, the graphene layer, the carbon fiber layer and the microencapsulated phase change material coating; heat insulation channels are formed between the microencapsulated phase change material coating and the inorganic phase change nano coating; and heat insulation channels are formed between the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material insulation coating; heating channels are formed between the pipe body, the anticorrosion layer, the graphene layer and the carbon fiber layer; heat insulation channels are formed between the carbon fiber layer and the microencapsulated phase change material coating; heat insulation channels are formed between the carbon fiber layer, the microencapsulated phase change material coating and the inorganic phase change nano coating; and heat insulation channels are formed between the carbon fiber layer, the microencapsulated phase change material coating, the inorganic phase change nano coating and the mesoporous silica-based shaped phase change material insulation coating.

10. The insulated pipe for a heating pipe network according to any one of claims 1 - 9, characterized in that The protective layer comprises: a shock absorption layer applied to the outer surface of the waterproof layer; a protective pipe sleeved on the outer surface of the shock absorption layer, and the outer surface of the protective pipe is applied with an outer anticorrosion layer and an outer waterproof layer.

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