Energy recovery system
By using an energy recovery system consisting of heat exchangers, thermoelectric converters and photovoltaic modules in optical fiber production, the problem of low energy utilization in optical fiber production is solved, the recovery of low-temperature waste heat and light energy in the environment is achieved, and the overall energy utilization rate is improved.
Patent Information
- Application Number
- CN202422575707.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-24
AI Technical Summary
During the optical fiber production process, the induction furnace consumes a large amount of energy when heating the optical fiber preform rod and releases a large amount of ambient low-temperature waste heat and light energy. These energies are not effectively utilized, resulting in low energy utilization rate.
The collection module composed of heat exchangers, thermoelectric converters and photovoltaic modules is used to recover the low-temperature waste heat and light energy released by the induction furnace, and store electrical energy through the energy storage module, and optimize energy utilization by combining sensors and controllers.
The energy utilization rate in the optical fiber production process is improved, and the effective recovery of environmental low-temperature waste heat and light energy is achieved.
Smart Images
Figure CN223342599U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy recovery in optical fiber production, in particular to an energy recovery system. Background Art
[0002] In the optical fiber production process, optical fiber preform drawing is a key step. The preform rod needs to be heated to its softening point and then drawn into a thin optical fiber through a drawing tower. In this process, induction furnaces, as the main heating equipment, consume a lot of energy.
[0003] However, in addition to the heat energy used to melt the optical fiber preform, the induction furnace also releases a large amount of low-temperature waste heat from the environment during the heating process and conducts light energy. This energy is not effectively utilized in traditional production processes and is often lost to the environment directly or indirectly.
[0004] Currently, no effective solution has been proposed to the problem of low energy utilization in the production of optical fibers in related technologies. Utility Model Content
[0005] An energy recovery system provided by an embodiment of the present utility model at least solves the problem of low energy utilization rate in producing optical fibers in related technologies.
[0006] An energy recovery system provided by an embodiment of the utility model includes an energy collection module and an energy storage module;
[0007] The collection module includes a heat exchanger, a thermoelectric converter and a photovoltaic module; the heat exchanger is arranged around the induction furnace, the thermoelectric converter is connected to the heat exchanger, and the photovoltaic module is arranged at the bottom outlet of the induction furnace;
[0008] The energy storage module is connected to the thermoelectric converter and the photovoltaic assembly.
[0009] An energy recovery system provided by an embodiment of the present invention further includes a sensor and a controller; the sensor is connected to the controller, and the controller is connected to the thermoelectric converter, the induction furnace, and the energy storage module.
[0010] An embodiment of the present utility model provides an energy recovery system, wherein the sensor includes a first temperature sensor and a second temperature sensor;
[0011] The first temperature sensor is arranged on the insulation layer of the induction furnace; the second temperature sensor is arranged on a side of the heat exchanger away from the induction furnace and is not in contact with the heat exchanger.
[0012] An embodiment of the present invention provides an energy recovery system, wherein the induction furnace includes a return water pipeline, and the sensor includes a third temperature sensor and a fourth temperature sensor; the third temperature sensor is arranged at the water inlet section of the return water pipeline, and the fourth temperature sensor is arranged at the water outlet section of the return water pipeline.
[0013] An energy recovery system provided by an embodiment of the present invention further includes a grid-connected cabinet; the input end of the grid-connected cabinet is connected to the output end of the energy storage module, and the output end of the grid-connected cabinet is connected to the power grid.
[0014] An embodiment of the present invention provides an energy recovery system, wherein a first circuit breaker is configured between the output end of the energy storage module and the input end of the grid-connected cabinet.
[0015] An embodiment of the present invention provides an energy recovery system, wherein the collection module further includes heat-insulating glass, and the heat-insulating glass is arranged between the photovoltaic assembly and the bottom outlet of the induction furnace.
[0016] An embodiment of the present invention provides an energy recovery system, wherein the thermoelectric converter is connected to the heat exchanger via a heat pipe.
[0017] An embodiment of the present invention provides an energy recovery system, wherein the energy storage module is connected to the thermoelectric converter and the photovoltaic assembly via a first cable and a second cable, respectively.
[0018] An embodiment of the present invention provides an energy recovery system, wherein a second circuit breaker is configured on the first cable, and a third circuit breaker is configured on the second cable.
[0019] An energy recovery system provided by an embodiment of the present utility model solves the problem of low energy utilization rate in the production of optical fibers in related technologies, and achieves the technical effect of recovering the ambient low-temperature waste heat and light energy released by the induction furnace and improving energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0021] Figure 1 This is a flow chart of an energy recovery system in an embodiment of the present utility model.
[0022] Figure 2 This is a flow chart of the energy recovery system provided in Example 1 of the embodiment of the present utility model.
[0023] Figure 3This is a flow chart of the energy recovery system provided in Example 2 of the embodiment of the present utility model. DETAILED DESCRIPTION
[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary, not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0027] In the optical fiber production process, fiber drawing is a critical step. The preform is heated to its softening point and then drawn into a thin optical fiber using a drawing tower. Induction furnaces, the primary heating equipment in this process, consume significant amounts of energy. However, in addition to the heat used to melt the preform, the induction furnace also releases significant amounts of ambient low-temperature waste heat during the heating process and conducts light energy. This energy is not effectively utilized in traditional production processes and is often lost directly or indirectly to the environment.
[0028] Among them, ambient low-temperature waste heat refers to heat energy with relatively low temperature that is lost to the surrounding environment and not utilized, and does not include the heat energy obtained by the cooling system or water system of the induction furnace.
[0029] To do this, see Figure 1As shown, the present application provides an energy recovery system, including a collection module and an energy storage module; the collection module includes a heat exchanger, a thermoelectric converter and a photovoltaic module; the heat exchanger is arranged around the induction furnace, the thermoelectric converter is connected to the heat exchanger, and the photovoltaic module is arranged at the bottom outlet of the induction furnace; the energy storage module is connected to the thermoelectric converter and the photovoltaic module.
[0030] The energy recovery system provided in the embodiment of the present application recovers the ambient low-temperature waste heat and light energy released by the induction furnace during the heating process, thereby improving the energy utilization rate during optical fiber production.
[0031] Next, the energy recovery system provided in the embodiment of the present application is described in detail:
[0032] 1. Connection structure:
[0033] Specifically, the heat exchanger is arranged around the induction furnace. This arrangement can increase the contact surface and improve the heat exchanger's collection effect on the low-temperature waste heat from the environment.
[0034] Optionally, the thermoelectric converter is connected to the heat exchanger via a heat pipe. A heat pipe is a highly efficient heat transfer element that works by evaporating and condensing a liquid. Connecting the heat exchanger and thermoelectric converter via a heat pipe can reduce heat loss.
[0035] Preferably, the heat pipe is a bent heat pipe, which can be applied to complex spatial layouts and has reversible heat flow direction, further improving heat transfer efficiency.
[0036] Optionally, the collection module further includes heat-insulating glass, which is disposed between the photovoltaic module and the bottom outlet of the induction furnace. The use of heat-insulating glass can reduce heat transfer loss and protect the photovoltaic module from being affected by high temperatures.
[0037] Optionally, the energy recovery system provided in the embodiment of the present application further includes a grid cabinet; the input end of the grid cabinet is connected to the output end of the energy storage module, and the output end of the grid cabinet is connected to the power grid.
[0038] Optionally, a first circuit breaker is configured between the output end of the energy storage module and the input end of the grid cabinet. In the event of an abnormality in the energy storage module or the grid cabinet, the first circuit breaker can be automatically disconnected or manually shut down to ensure power supply safety.
[0039] Optionally, the energy storage module is connected to the thermoelectric converter and the photovoltaic assembly through a first cable and a second cable respectively.
[0040] Preferably, the first cable and the second cable are both polyvinyl chloride cables. Polyvinyl chloride cables have good insulation performance, are easy to process and customizable, and have low production costs, making them suitable for industrial production environments.
[0041] Preferably, a second circuit breaker is configured on the first cable, and a third circuit breaker is configured on the second cable. In the event of an abnormality in the energy storage module or the thermoelectric converter, the second circuit breaker can automatically or manually disconnect to ensure power supply safety. In the event of an abnormality in the energy storage module or the photovoltaic module, the third circuit breaker can automatically or manually disconnect to ensure power supply safety.
[0042] Optionally, the output end of the energy storage module can be directly connected to a load.
[0043] Optionally, the energy recovery system provided in the embodiment of the present application further includes a sensor and a controller; the sensor is connected to the controller, and the controller is connected to the thermoelectric converter, the induction furnace, and the energy storage module.
[0044] Optionally, the above-mentioned sensor includes a first temperature sensor and a second temperature sensor, please refer to Figure 2 As shown;
[0045] Among them, the first temperature sensor is arranged on the insulation layer of the induction furnace, and the first temperature sensor collects the heating temperature data of the induction furnace and transmits it to the controller; the second temperature sensor is arranged on the side of the heat exchanger away from the induction furnace and does not contact the heat exchanger. The second temperature sensor collects the ambient temperature data and transmits it to the controller.
[0046] Optionally, the induction furnace includes a water return pipe, and the sensor further includes a third temperature sensor and a fourth temperature sensor. Figure 3 As shown;
[0047] Among them, the third temperature sensor is set at the water inlet section of the return pipe, the third temperature sensor measures the inlet water temperature and transmits it to the controller; the fourth temperature sensor is set at the water outlet section of the return pipe, the fourth temperature sensor measures the return water temperature and transmits it to the controller.
[0048] It should be noted that the return water pipeline may be filled with water, oil liquid with a high ignition point, or other liquids; since the circulating liquid absorbs heat, the return water temperature is greater than the inlet water temperature.
[0049] Optionally, the controller is a microprocessor or a programmable logic controller.
[0050] 2. Working Principle:
[0051] After the induction furnace enters the heating state, the heat exchanger collects the low-temperature waste heat from the environment, the thermoelectric converter converts the heat energy collected by the heat exchanger into electrical energy, the photovoltaic module collects the light energy and converts it into electrical energy, and the energy storage module receives and stores the electrical energy converted by the thermoelectric converter and photovoltaic module.
[0052] Example 1:
[0053] Please refer to Figure 2 As shown, in the process of collecting and storing energy, the controller receives the heating temperature data collected by the first temperature sensor, the ambient temperature data collected by the second temperature sensor, and the electric energy data stored by the energy storage module;
[0054] Among them, the controller combines the heating temperature data to obtain the recoverable heat, and combines the ambient temperature data to obtain the lost heat. The recoverable heat minus the lost heat is used to obtain the actual recovered heat. The actual recovered heat is compared with the stored electric energy data to obtain the recovery efficiency, which is the energy utilization rate.
[0055] The controller adjusts the heating power of the induction furnace and the working state of the thermoelectric converter according to the energy utilization rate; the heating temperature can be changed by adjusting the heating power of the induction furnace, and the conversion efficiency can be changed by adjusting the working state of the thermoelectric converter.
[0056] It should be noted that: (1) the stored electric energy data includes the electric energy converted by the photovoltaic modules. Since its proportion in the electric energy stored in the energy storage module is relatively small, in order to simplify the operation, the above recovery efficiency does not take into account the recoverable light energy and the lost light energy; (2) the energy utilization rate does not increase with the heating temperature of the induction furnace; (3) the conversion efficiency of the thermoelectric converter is adjusted to meet the specific requirements of the energy storage device and the subsequent power supply.
[0057] Example 2:
[0058] Please refer to Figure 2 As shown, in the process of collecting and storing energy, the controller receives the heating temperature data collected by the first temperature sensor, the ambient temperature data collected by the second temperature sensor, the inlet water temperature data collected by the third temperature sensor, the return water temperature data collected by the fourth temperature sensor, and the electric energy data stored in the energy storage module;
[0059] Among them, based on Example 1, the controller combines the inlet water temperature data and the return water temperature data to obtain the internal heat loss of the induction furnace, and the internal heat loss is used to regulate the temperature inside the furnace; the controller adjusts the heating power and inlet water temperature of the induction furnace based on the energy utilization rate and the internal heat loss, which can make more efficient use of energy.
[0060] For example, when the average heating power of the induction furnace is 50 kW, the average inlet water temperature is set to 25°C, the average return water temperature is 35°C, the monthly stored electrical energy is approximately 8000 kWH, and the energy utilization rate is approximately 13%.
[0061] For ease of description, spatially relative terms such as "above," "on the upper surface of," "on top of," etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would then be positioned as "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.
[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0063] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. An energy recovery system, characterized in that: Including acquisition module and energy storage module; The collection module includes a heat exchanger, a thermoelectric converter and a photovoltaic module; the heat exchanger is arranged around the induction furnace, the thermoelectric converter is connected to the heat exchanger, and the photovoltaic module is arranged at the bottom outlet of the induction furnace; The energy storage module is connected to the thermoelectric converter and the photovoltaic assembly.
2. The energy recovery system according to claim 1, characterized in that It also includes a sensor and a controller; the sensor is connected to the controller, and the controller is connected to the thermoelectric converter, the induction furnace, and the energy storage module.
3. The energy recovery system according to claim 2, characterized in that: The sensor includes a first temperature sensor and a second temperature sensor; The first temperature sensor is arranged on the insulation layer of the induction furnace; the second temperature sensor is arranged on a side of the heat exchanger away from the induction furnace and is not in contact with the heat exchanger.
4. The energy recovery system according to claim 2, characterized in that: The induction furnace includes a return water pipeline, and the sensors include a third temperature sensor and a fourth temperature sensor; the third temperature sensor is arranged at the water inlet section of the return water pipeline, and the fourth temperature sensor is arranged at the water outlet section of the return water pipeline.
5. The energy recovery system according to claim 1, characterized in that It also includes a grid cabinet; the input end of the grid cabinet is connected to the output end of the energy storage module, and the output end of the grid cabinet is connected to the power grid.
6. The energy recovery system according to claim 5, characterized in that: A first circuit breaker is configured between the output end of the energy storage module and the input end of the grid-connected cabinet.
7. The energy recovery system according to claim 1, characterized in that: The collection module further includes heat-insulating glass, which is arranged between the photovoltaic assembly and the bottom outlet of the induction furnace.
8. The energy recovery system according to claim 1, characterized in that: The thermoelectric converter is connected to the heat exchanger via a heat pipe.
9. The energy recovery system according to claim 1, characterized in that: The energy storage module is connected to the thermoelectric converter and the photovoltaic assembly via a first cable and a second cable respectively.
10. The energy recovery system according to claim 9, characterized in that: A second circuit breaker is configured on the first cable, and a third circuit breaker is configured on the second cable.