Phase change heat storage type anti-freezing water conveying pipeline

Abstract

The utility model discloses a phase change heat storage type anti-freezing water conveying pipeline, which belongs to water conveying pipeline supplies and comprises a water conveying pipeline, a protection pipeline, a phase change layer, a heat preservation layer, a super-hydrophobic photo-thermal coating, a liquid inlet and a liquid outlet. The water conveying pipeline is used for conveying water, three supporting frames distributed at equal angles are arranged between the water conveying pipeline and the protection pipeline, the phase change layer is filled between the water conveying pipeline and the protection pipeline and is equally divided by the three supporting frames, the heat preservation layer is fixed to the outer wall of the protection pipeline, and the super-hydrophobic photo-thermal coating is fixed to the outer wall of the heat preservation layer. The inner wall of the protection pipeline communicates with a liquid inlet and a liquid outlet, and the ends, away from the protection pipeline, of the liquid inlet and the liquid outlet extend out of the outer surfaces of the heat preservation layer and the super-hydrophobic photo-thermal coating. The phase change heat storage type anti-freezing water conveying pipeline is easy to form and machine, convenient to construct and good in anti-freezing effect, and the anti-freezing problem of the pipeline in continuous low-temperature and ultralow-temperature environments can be effectively solved by arranging the phase change layer and the super-hydrophobic photo-thermal coating.

Description

Technical Field

[0001] This utility model relates to the field of water pipeline technology, and in particular to a phase change heat storage antifreeze water pipeline. Background Technology

[0002] Water pipelines are important facilities for ensuring water supply for residents and industrial production, but they are prone to freezing and ice blockage in low-temperature winter conditions. In order to effectively solve the problem of water pipeline freezing in winter, the following methods are often used: (1) Burying the water pipeline deep below the frozen soil layer. This method has high construction costs, high maintenance costs, and high maintenance difficulty. Moreover, in some mountainous areas or areas with thick frozen soil layers, it is not possible to prevent freezing by deep burial. In addition, in order to prevent the heat emitted from the pipeline from melting the frozen soil layer and causing damage to the environment, it is also necessary to introduce antifreeze to remove the heat in the pipeline and keep the temperature in the pipeline constant (202020398976.X, 202021481027.4). (2) Covering the outside of the water pipeline with an insulation layer. Although the insulation layer can effectively reduce the heat loss of the pipeline and play a role in preventing freezing, in continuous low-temperature weather or extremely low-temperature weather below -20℃, the insulation layer alone cannot play a good role in preventing freezing. In addition, the insulation layer is prone to absorbing moisture in rainy or snowy weather or humid environments, which reduces the insulation effect. (3) Connect vacuum insulation pipes to the outside of the water pipe. Vacuum pipes can reduce air convection and can play a role in insulation, but the preparation and installation of vacuum insulation pipes are complicated, which limits their application (202021481027.4). (4) Synergistic effect of insulation layer and electric heating tape. By laying electric heating tape in the insulation layer to heat the water pipe, it can effectively cope with continuous low temperature and extreme temperature environment, but this method will cause waste of electricity (202322487368.2). In some remote areas or mountainous areas where electricity is inconvenient, electric heating technology cannot be used. Therefore, it is urgent to develop a new type of antifreeze pipe to solve the problem of antifreeze of open-air pipes in winter.

[0003] This invention constructs a phase change thermal storage antifreeze water pipeline by sequentially coating the outside of the water pipeline with a phase change layer, a protective pipeline, an insulation layer, and a superhydrophobic photothermal coating, effectively solving the problem of water pipeline freezing. Specifically, the phase change layer undergoes a phase change at night in low-temperature environments, releasing heat that counteracts heat diffusion into the environment, slowing the rate of temperature drop in the water pipeline. During the day, when water flows, the phase change material absorbs heat from the water pipeline and undergoes a phase change, storing the heat. The protective pipeline protects both the phase change layer and the water pipeline. The protective pipeline and the water pipeline are integrally extruded and supported by a support frame, with the phase change material filling the space between them. The insulation layer is fixedly connected to the outer wall of the protective pipeline, reducing heat loss and providing insulation. The superhydrophobic photothermal coating, fixed to the outer wall of the insulation layer, converts sunlight into heat and transfers it to the phase change layer for storage. In addition, the superhydrophobic photothermal coating also has waterproof and moisture-proof properties, which can protect the insulation layer. In summary, this utility model discloses a phase change thermal storage antifreeze water pipeline that is simple to form and process, convenient to construct, and can solve the problem of pipeline antifreeze in continuous low temperature and ultra-low temperature environments. Summary of the Invention

[0004] The purpose of this invention is to provide a phase change heat storage antifreeze pipe to solve the problem that the existing antifreeze pipes have unsatisfactory antifreeze effect in continuous low temperature and ultra-low temperature environments.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model antifreeze pipe is as follows: The antifreeze pipe includes a water supply pipeline, a phase change layer, a protective pipeline, a heat insulation layer, a superhydrophobic photothermal coating, a support frame, an inlet, and an outlet. The water supply pipeline is used for water supply and transportation. The phase change layer is filled between the water supply pipeline and the protective pipeline. The outer wall of the protective pipeline is fixedly connected to the heat insulation layer. The outer wall of the heat insulation layer is fixedly connected to the superhydrophobic photothermal coating. The inlet and outlet are fixed to the inner wall of the protective pipeline.

[0006] Furthermore, three support frames are fixedly connected at equal intervals between the water supply pipeline and the protection pipeline, and the water supply pipeline, the protection pipeline and the support frames are an integrated structure.

[0007] Furthermore, the phase change layer is filled between the water supply pipeline and the protection pipeline and is divided equally by three support frames.

[0008] Furthermore, the inner wall of the protective tube is connected to an inlet and an outlet, and the ends of the inlet and outlet away from the protective tube extend out onto the outer surface of the insulation layer and the superhydrophobic photothermal coating.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. Freezing prevention through phase change heat storage requires no additional electrical energy consumption. While electric heat tracing with insulation layers is currently the most common method for preventing freezing of open-air pipelines, it consumes a large amount of electricity, making it difficult to implement in areas with limited electricity access. This invention uses the phase change process of a phase change layer for freezing prevention, eliminating the need for additional electrical energy consumption. At night, in low-temperature environments, the phase change layer undergoes a phase change, releasing heat to offset heat diffused into the environment and reduce the cooling rate. During the day, when water flows, the phase change layer absorbs and stores heat from the water flow. This invention releases and stores heat through a phase change process, requiring no additional energy consumption.

[0011] 2. The synergistic effect of the superhydrophobic photothermal coating and the phase change layer can solve the problem of pipeline antifreeze in continuous low and ultra-low temperature environments. In these environments, the photothermal coating can convert sunlight into heat, which is then transferred to the phase change layer for storage, further enhancing its antifreeze capability. In addition, the superhydrophobic properties of the photothermal coating provide excellent waterproof and moisture-proof protection for the insulation layer, solving the problem of insulation layer protection in rainy, snowy, and humid environments, and improving the insulation effect.

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Attached Figure Description

[0013] Figure 1 The figure shown is a cross-sectional schematic diagram of an example of this utility model;

[0014] Figure 2 The figure shown is a cross-sectional schematic diagram of an example of this utility model.

[0015] In the diagram: 1. Water supply pipeline; 2. Phase change layer; 3. Protective pipeline; 4. Insulation layer; 5. Superhydrophobic photothermal coating; 6. Support frame; 7. Inlet I; 8. Inlet II; 9. Inlet III; 10. Outlet I; 11. Outlet II Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1 and 2The aforementioned phase change thermal storage antifreeze water pipeline includes 1 water supply pipeline, 2 phase change layer, 3 protective pipeline, 4 insulation layer, 5 superhydrophobic photothermal coating, 6 support frame, 7 inlet I, 8 inlet II, 9 inlet III, 10 outlet I, and 11 outlet II. The 1 water supply pipeline is used for water supply and transportation. The 2 phase change layer is filled between the 1 water supply pipeline and the 3 protective pipeline. The 4 insulation layer is fixedly connected to the outer wall of the 3 protective pipeline. The 5 superhydrophobic photothermal coating is fixedly connected to the outer wall of the 4 insulation layer.

[0018] Three support frames of type 6 are fixedly connected at equal intervals between the water supply pipeline 1 and the protection pipeline 2. The water supply pipeline 1, the protection pipeline 3, and the support frames of type 6 are an integrated structure.

[0019] The water supply pipeline 1 and the protection pipeline 3 are divided into three spaces by 6 support frames. Each space is filled with 2 phase change layers, and the phase change temperature of the 2 phase change layers is -10~0℃.

[0020] The inner wall of the three protective tubes is connected to an inlet and an outlet, and the ends of the inlet and outlet away from the protective tubes extend out of the outer surface of the insulation layer.

[0021] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A phase change thermal storage type antifreeze water pipeline, characterized in that, The antifreeze water supply pipeline includes a water supply pipe, a phase change layer, a protective pipe, a superhydrophobic photothermal coating, a support frame, an inlet, and an outlet. The water supply pipe is used for water supply. The phase change layer is filled between the water supply pipe and the protective pipe. An insulation layer is fixedly connected to the outer wall of the protective pipe. A superhydrophobic photothermal coating is fixedly connected to the outer wall of the insulation layer. The inlet and outlet are fixed to the inner wall of the protective pipe.

2. The phase change thermal storage type antifreeze water pipeline as described in claim 1, characterized in that, The water supply pipeline and the protection pipeline are fixedly connected at equal intervals by three support frames, and the water supply pipeline, the protection pipeline and the support frames are an integrated structure.

3. The phase change thermal storage type antifreeze water pipeline as described in claim 1, characterized in that, The phase change layer is filled between the water supply pipeline and the protection pipeline and is divided equally by three support frames.

4. A phase change thermal storage type antifreeze water pipeline as described in claim 1, characterized in that, The inner wall of the protective tube is connected to an inlet and an outlet, and the ends of the inlet and outlet away from the protective tube extend to the outer surface of the insulation layer and the superhydrophobic photothermal coating.

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