Thermal insulation system with photovoltaic phase change
Through the coordination of the phase change heat storage layer and the electromagnetic heating layer, combined with photovoltaic modules and control devices, the problem of adhesion and blockage of oil pipelines in low-temperature environments was solved, stable temperature control and energy efficiency were achieved, and costs and environmental impacts were reduced.
Patent Information
- Application Number
- CN202423061554.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing oil pipelines are prone to adhesion in low-temperature environments, leading to blockage. Existing insulation methods are difficult to maintain a stable temperature inside the pipeline, increasing the risk of blockage, and rely on traditional electricity with high energy consumption.
The phase change heat storage layer and electromagnetic heating layer are combined, power is provided by photovoltaic modules, and the control device adjusts the heating power to ensure stable temperature in the pipeline and reduce dependence on the external power grid.
It achieves stable maintenance of temperature in the pipeline, improves energy utilization, reduces costs, and reduces environmental impact, which is in line with the concept of sustainable development.
Smart Images
Figure CN223483757U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pipeline insulation technology, and in particular to an insulation system with photovoltaic phase change. Background Technology
[0002] Oil pipelines primarily use steel pipes for oil and gas. However, due to the viscosity of oil, it easily adheres to the pipe walls at low temperatures, causing blockages and significantly hindering oil transportation. Current insulation methods typically involve installing an insulation layer on the pipeline, utilizing the low thermal conductivity of the insulation material to keep the fluid inside warm. Over time, changes in external temperature and the degradation of the insulation material's performance make it difficult for the insulation layer to maintain a consistently suitable temperature inside the pipeline. Lower temperatures reduce oil flow, increasing the risk of pipeline blockage. Summary of the Invention
[0003] In view of this, this application proposes a thermal insulation system with photovoltaic phase change, suitable for installation on pipelines, including: a phase change thermal storage layer, an electromagnetic heating layer, a second thermal insulation layer, a photovoltaic module, and a control device;
[0004] A phase change thermal storage layer, an electromagnetic heating layer, and a second insulation layer are sequentially wrapped around the outer wall of the pipe. The input end of the electromagnetic heating layer is electrically connected to the output end of the control device, and the input end of the control device is electrically connected to the output end of the photovoltaic module.
[0005] The phase change thermal storage layer includes: a phase change thermal storage medium, a shell, and two or more fasteners; the shell has a C-shaped cross-section, and the two or more fasteners are all located at the opening of the shell, and the two or more fasteners are equidistant along the length of the shell. The shell is installed on the outer wall of the pipe through the two or more fasteners; the shell has a hollow cavity, and the phase change thermal storage medium is located in the cavity of the shell, which is suitable for absorbing or releasing heat.
[0006] In one possible implementation, the fastener includes two fixing lugs and a bolt assembly; the two fixing lugs are positioned opposite each other at the opening of the housing, and the bolt assembly passes through the two fixing lugs in sequence, suitable for fixing the housing to the outer wall of the pipe.
[0007] In one possible implementation, a temperature detection device is also included; the temperature detection device is located between the shell and the electromagnetic heating layer, and the detection end of the temperature detection device penetrates through the outer wall of the shell into the phase change heat storage medium, and the output end of the temperature detection device is electrically connected to the input end of the control device.
[0008] In one possible implementation, there are two or more temperature sensing devices; the two or more temperature sensing devices are arranged circumferentially along the housing.
[0009] In one possible implementation, the temperature detection device is a thermocouple temperature sensor.
[0010] In one possible implementation, the electromagnetic heating layer includes two or more electromagnetic heaters and a first insulation layer; the first insulation layer is disposed between the phase change heat storage layer and the second insulation layer; the two or more electromagnetic heaters are all disposed within the first insulation layer, and the input terminals of the two or more electromagnetic heaters are all electrically connected to the input terminal of the photovoltaic module through a control device.
[0011] In one possible implementation, two or more electromagnetic heaters are arranged at equal intervals along the circumference of the first insulation layer.
[0012] In one possible implementation, a lightning protection combiner box is also included; the output terminal of the photovoltaic module is electrically connected to the input terminal of the lightning protection combiner box, and the output terminal of the lightning protection combiner box is electrically connected to the input terminal of the grounding device.
[0013] Beneficial effects of this application
[0014] Compared with existing technologies, the phase change thermal storage layer and the electromagnetic heating layer work together. The electromagnetic heating layer directly heats the liquid in the pipeline to achieve heat tracing, while excess heat is absorbed and stored by the phase change thermal storage layer. During the phase change process, the phase change thermal storage layer can absorb or release a large amount of latent heat. When the temperature inside the pipeline is high, the phase change thermal storage medium absorbs heat and undergoes a phase change, thereby storing heat and preventing the temperature inside the pipeline from becoming too high. Conversely, when the temperature inside the pipeline decreases, the phase change thermal storage layer releases the stored heat, playing a role in heat preservation and ensuring that the temperature inside the pipeline is always maintained within a relatively stable range, thereby improving energy utilization and reducing operating costs.
[0015] By installing photovoltaic modules, the dependence of the electromagnetic heating layer on the external power grid is reduced, thereby lowering energy and operating costs and reducing the environmental impact of traditional electricity consumption, which aligns with the concept of sustainable development.
[0016] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.
[0018] Figure 1 A cross-sectional view of the photovoltaic phase change insulation system of this application is shown;
[0019] Figure 2 A cross-sectional view of the housing of this application is shown;
[0020] Figure 3A block diagram showing the control device of this application controlling the electromagnetic heater is shown;
[0021] Figure 4 The circuit block diagram of the photovoltaic phase change insulation system of this application is shown. Detailed Implementation
[0022] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0023] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0025] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0026] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0027] The application itself proposes a photovoltaic phase change insulation system suitable for installation on pipe 100, such as Figures 1 to 4As shown, the system includes a phase change thermal storage layer 200, an electromagnetic heating layer, a second insulation layer 400, a photovoltaic module 610, and a control device 500. The phase change thermal storage layer 200, the electromagnetic heating layer, and the second insulation layer 400 are sequentially wrapped around the outer wall of the pipe 100. The input end of the electromagnetic heating layer is electrically connected to the output end of the control device 500, and the input end of the control device 500 is electrically connected to the output end of the photovoltaic module 610. The phase change thermal storage layer 200 includes a phase change thermal storage medium, a shell 210, and two or more fixing members 200. The shell 210 has a C-shaped cross-section. The two or more fixing members 200 are all located at the opening of the shell 210 and are equidistant from each other along the length of the shell 210. The shell 210 is installed on the outer wall of the pipe 100 by the two or more fixing members 200. The shell 210 has a hollow cavity, and the phase change thermal storage medium is placed in the cavity of the shell 210, which is suitable for absorbing or releasing heat.
[0028] It should be noted that the phase change heat storage layer 200 is suitable for providing stable heat energy to the pipe 100, preventing the liquid inside the pipe 100 from sticking to the inner wall due to excessively low temperature. When the electromagnetic heating layer heats the pipe 100, the phase change heat storage layer 200 can store the heat energy provided by the electromagnetic heating layer and release the heat energy when needed, thereby achieving a stable supply of heat energy and improving the utilization efficiency of heat energy. The electromagnetic heating layer is suitable for providing heat energy to the pipe 100 and transferring the heat energy to the phase change heat storage layer 200. The second insulation layer 400 is suitable for preventing heat from dissipating from the pipe 100 to the outside and slowing down the heat loss inside the pipe 100. The electromagnetic heating layer is connected to the photovoltaic array through the control device 500. The photovoltaic module 610 is electrically connected to the electromagnetic heating layer. It is used to provide power to the electromagnetic heating layer. After converting solar energy into light energy, the photovoltaic module 610 transmits it to the electromagnetic heating layer through the control device 500. Compared with existing heating methods, by setting up the photovoltaic module 610, the electromagnetic heating layer's dependence on the external power grid is reduced, energy costs are lowered, and the environmental impact of traditional electricity consumption is reduced, which is in line with the concept of sustainable development. The control device 500 is used to adjust the current output of the photovoltaic module 610 to adjust the heating power of the electromagnetic heating layer. By setting up the control device 500, the phase change heat storage layer 200 is prevented from being damaged due to excessive heat absorption caused by excessive heating power of the electromagnetic heating layer.
[0029] It should be noted that the input terminal of the control device 500 is electrically connected to the output terminal of the photovoltaic module 610 using a conventional connection method. The photovoltaic module 610 can be directly attached to the outermost side of the pipe 100 using flexible components. Alternatively, the photovoltaic module 610 can be placed on the ground or a building using conventional components. This application does not specify a particular installation method for the photovoltaic module 610.
[0030] Compared with existing technologies, the phase change heat storage layer 200 and the electromagnetic heating layer work together. The electromagnetic heating layer directly heats the liquid in the pipe 100 to achieve heat tracing, while excess heat is absorbed and stored by the phase change heat storage layer 200. During the phase change process, the phase change heat storage layer 200 can absorb or release a large amount of latent heat. When the temperature inside the pipe 100 is high, the phase change heat storage medium absorbs heat and undergoes a phase change, thereby storing heat and preventing the temperature inside the pipe 100 from becoming too high. Conversely, when the temperature inside the pipe 100 decreases, the phase change heat storage layer 200 releases the stored heat, playing a heat preservation role and ensuring that the temperature inside the pipe 100 is always maintained within a relatively stable range, thereby improving energy utilization and reducing operating costs.
[0031] like Figure 1 , Figure 2 As shown, the C-shaped shell 210 matches the curved surface of the outer wall of the pipe 100, allowing the shell 210 to fit well against the outer wall of the pipe 100, increasing the contact area between the shell 210 and the pipe 100, which is beneficial for heat transfer between the pipe 100 and the shell 210. At the same time, the C-shaped structure facilitates the installation of the shell 210 on the outer wall of the pipe 100, reducing the installation difficulty of the phase change heat storage layer 200. Two or more fasteners 200 are equidistantly arranged along the length of the shell 210, which can securely install the shell 210. On the outer wall of the pipe 100, two or more fasteners 200 distributed at equal intervals can make the force on the shell 210 on the pipe 100 more uniform, preventing the shell 210 from loosening or displacing due to uneven local force and thus falling off the pipe 100; the hollow cavity structure provides storage space for the phase change heat storage medium. When the phase change heat storage medium absorbs heat and undergoes a phase change, the phase change medium will change from solid to liquid. The hollow cavity design prevents the phase change heat storage medium from flowing out of the shell 210 after the phase change, ensuring the stability of the overall structure.
[0032] Furthermore, the shell 210 is made of metal material, which has good thermal conductivity. This allows the shell 210 to effectively transfer the heat from the pipe 100 and the electromagnetic heating layer to the phase change heat storage medium, or to transfer the heat released by the phase change heat storage medium back to the pipe 100.
[0033] In one possible implementation, such as Figure 2 As shown, the fastener 200 includes two fixing ears 221 and a bolt assembly 222; the two fixing ears 221 are disposed opposite to each other at the opening of the housing 210, and the bolt assembly 222 is disposed through the two fixing ears 221, which is suitable for fixing the housing 210 to the outer wall of the pipe 100.
[0034] It should be noted that the bolt assembly 222 includes a bolt and a nut. Each of the two fixing ears 221 has a mounting hole that matches the bolt. The bolt passes through the fixing hole on the two fixing ears 221 and is threaded into the nut. By tightening the nut, the bolt and nut generate a large tightening force, which makes the housing 210 fit tightly against the outer wall of the pipe 100. By setting the fastener 200, the installer only needs to pass the bolt through the mounting hole on the fixing ear 221 and tighten the nut to complete the installation of the phase change heat storage layer 200, which reduces the installation difficulty and installation cost.
[0035] Further, such as Figure 2 As shown, a gasket 223 is provided at the opening of the housing 210. The gasket 223 is made of elastic material. The gasket 223 and the housing 210 cooperate with each other to completely cover the pipe 100 and prevent heat from escaping from the opening of the housing 210. At the same time, in actual installation, when the outer diameter of the pipe 100 is slightly larger, the gasket 223 can fill the gap; when the outer diameter of the pipe 100 is slightly smaller, the gasket 223 can be appropriately compressed, thereby ensuring that the housing 210 can be tightly fixed to the outer wall of the pipe 100. By setting the gasket 223, the housing 210 can be used for pipes 100 of various sizes and specifications, thus improving the adaptability of the housing 210.
[0036] In one possible implementation, such as Figure 1 As shown, the electromagnetic heating layer includes two or more electromagnetic heaters 310 and a first insulation layer 320; the first insulation layer 320 is disposed between the phase change heat storage layer 200 and the second insulation layer 400; the two or more electromagnetic heaters 310 are all disposed within the first insulation layer 320, and the two or more electromagnetic heaters 310 are all electrically connected to the control device 500 and the photovoltaic module 610.
[0037] It should be noted that the first insulation layer 320 is used to prevent the heat generated by the electromagnetic heater 310 from spreading outward. Two or more electromagnetic heaters 310 are connected in parallel and placed inside the first insulation layer 320. The input terminals of the two or more electromagnetic heaters 310 are connected in parallel and connected to the output terminal of the control device 500. The input terminal of the control device 500 is connected to the output terminal of the photovoltaic module 610. Two or more electromagnetic heaters 310 can heat the pipe 100 from multiple locations, ensuring that each part of the pipe 100 receives appropriate heat replenishment.
[0038] Further, such as Figure 1 As shown, two or more electromagnetic heaters 310 are equidistantly arranged along the circumference of the first insulation layer 320.
[0039] It should be noted that two or more electromagnetic heaters 310 are equidistantly arranged along the circumference of the pipe 100. The electromagnetic heaters 310 can heat the pipe 100 and the phase change heat storage layer 200 from different directions, ensuring that the heat can be evenly transferred to the phase change heat storage medium, so that it can give full play to its heat storage and heat release functions.
[0040] In one possible implementation, such as Figure 1 As shown, a switch 510 is provided between the electromagnetic heater 310 and the control device 500. The control device 500 can control the opening and closing of the switch 510. When the temperature is too high, the control device 500 can stop the power supply to the electromagnetic heater 310 by turning off the switch 510, thereby protecting the internal structure and components of the electromagnetic heater 310 and extending the service life of the electromagnetic heater 310.
[0041] In one possible implementation, a temperature detection device 520 is also included; the temperature detection device 520 is located between the housing 210 and the electromagnetic heating layer, and the detection end of the temperature detection device 520 penetrates through the outer wall of the housing 210 and extends into the phase change heat storage medium, and the output end of the temperature detection device 520 is electrically connected to the input end of the control device 500.
[0042] It should be noted that the temperature detection device 520 is suitable for detecting the temperature of the phase change thermal storage medium. ， The output of the temperature detection device 520 is electrically connected to the input of the control device 500. The temperature detection device 520 transmits the detected temperature data of the phase change heat storage medium to the control device 500. The control device 500 turns the electromagnetic heater 310 on or off according to the received temperature data and adjusts the heating power to ensure that the temperature in the pipeline 100 is always maintained within a relatively stable range.
[0043] Specifically, such as Figure 3 As shown, the control device 500 determines whether the electromagnetic heater 310 is turned on or off based on whether the temperature detected by the temperature detection device 520 meets the preset temperature requirement. When the detected temperature meets the preset temperature requirement, the control device 500 does not trigger the turning on or off of the electromagnetic heater 310. When the detected temperature is lower than the preset temperature requirement, the control device 500 controls the switch 510 to turn on the electromagnetic heater 310 to maintain the phase change heat storage medium within a suitable temperature range. When the detected temperature is higher than the preset temperature requirement, the control device 500 controls the switch 510 to turn off the electromagnetic heater 310 to prevent damage to the phase change heat storage medium due to excessive temperature. The preset temperature is set based on the phase change temperature of the phase change heat storage medium.
[0044] Preferably, the preset temperature range is 40°-70°.
[0045] Preferably, the control device 500 adopts an industrial control computer based on existing technology.
[0046] In one possible implementation, such as Figure 1 As shown, there are two or more temperature detection devices 520; the two or more temperature detection devices 520 are arranged circumferentially along the housing 210. It should be noted that the design of multiple temperature detection devices 520 arranged circumferentially along the housing 210 can accurately detect the temperature information at different locations of the phase change heat storage medium, thereby providing more accurate temperature feedback to the control device 500.
[0047] In one possible implementation, the temperature detection device 520 is a thermocouple temperature sensor.
[0048] In one possible implementation, such as Figure 4 As shown, it also includes a surge protector 620; the output terminal of the photovoltaic module 610 is electrically connected to the input terminal of the surge protector 620, and the output terminal of the surge protector 620 is electrically connected to the input terminal of the grounding device 630. It should be noted that during thunderstorms, the surge protector 620 also prevents surges induced by lightning from affecting the photovoltaic module 610, ensuring that the photovoltaic module 610 can operate normally during thunderstorms. The surge protector 620 and the grounding device 630 work together to conduct overvoltages and overcurrents generated by lightning to the ground, protecting the photovoltaic module 610 from lightning damage.
[0049] Furthermore, the photovoltaic module 610, the electromagnetic heater 310, and the lightning protection combiner box 620 are electrically connected to the grounding device 630 through the DC protector 640. By setting the DC protector 640, the safety of the overall structure of the photovoltaic phase change insulation system is ensured.
[0050] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A thermal insulation system with photovoltaic phase change, suitable for installation on pipelines, characterized in that, include: Phase change thermal storage layer, electromagnetic heating layer, second insulation layer, photovoltaic module and control device; The phase change thermal storage layer, the electromagnetic heating layer, and the second insulation layer are sequentially wrapped around the outer wall of the pipe. The input end of the electromagnetic heating layer is electrically connected to the output end of the control device, and the input end of the control device is electrically connected to the output end of the photovoltaic module. The phase change thermal storage layer includes: a phase change thermal storage medium, a shell, and two or more fixing members; the shell has a C-shaped cross-section, and the two or more fixing members are all located at the opening of the shell, and the two or more fixing members are equidistant along the length of the shell. The shell is installed on the outer wall of the pipe through the two or more fixing members; the shell has a hollow cavity, and the phase change thermal storage medium is located in the cavity of the shell, which is suitable for absorbing or releasing heat.
2. The heat preservation system with photovoltaic phase change according to claim 1, characterized in that, The fastener includes two fixing lugs and a bolt assembly; The two fixing lugs are disposed opposite to each other at the opening of the housing, and the bolt assembly passes through the two fixing lugs in sequence, which is suitable for fixing the housing to the outer wall of the pipe.
3. The thermal insulation system with photovoltaic phase change according to claim 1, characterized in that, It also includes a temperature detection device; The temperature detection device is located between the shell and the electromagnetic heating layer, and the detection end of the temperature detection device penetrates through the outer wall of the shell and extends into the phase change heat storage medium. The output end of the temperature detection device is electrically connected to the input end of the control device.
4. The heat preservation system with photovoltaic phase change according to claim 3, characterized in that, The temperature detection device is provided in two or more locations; Two or more of the temperature detection devices are arranged circumferentially along the housing.
5. The thermal insulation system with photovoltaic phase change according to claim 4, characterized in that, The temperature detection device is a thermocouple temperature sensor.
6. The thermal insulation system with photovoltaic phase change according to claim 1, characterized in that, The electromagnetic heating layer includes two or more electromagnetic heaters and a first insulation layer; The first insulation layer is disposed between the phase change heat storage layer and the second insulation layer; two or more electromagnetic heaters are disposed within the first insulation layer. The input terminals of two or more of the electromagnetic heaters are electrically connected to the input terminal of the photovoltaic module through the control device.
7. The thermal insulation system with photovoltaic phase change according to claim 6, characterized in that, Two or more of the electromagnetic heaters are arranged at equal intervals along the circumference of the first insulation layer.
8. The thermal insulation system with photovoltaic phase change according to claim 1, characterized in that, It also includes lightning protection junction boxes; The output terminal of the photovoltaic module is electrically connected to the input terminal of the lightning protection combiner box, and the output terminal of the lightning protection combiner box is electrically connected to the input terminal of the grounding device.