Device for recovering heat radiation energy in billet pile cooling field

Abstract

The utility model discloses a device for recovering heat radiation energy in a billet pile cooling field, and relates to the technical field of energy conservation in metallurgical industry. A device for recovering heat radiation energy in a steel billet pile cold field comprises a heat collection plate arranged around the steel billet pile cold field and used for collecting the heat radiation energy near the steel billet pile cold field; the phase change heat storage tank is connected with the heat collection plate and used for storing part of heat radiation energy in the phase change heat storage tank; the thermoelectric conversion unit is connected with the heat collection plate and used for converting the residual heat radiation energy into electric energy; the self-adaptive positioning system comprises infrared sensors and a servo driving motor, and the infrared sensors are arranged around the steel billet pile cold field and used for detecting the temperature distribution condition of the steel billet pile cold field; the servo driving motor is connected with the heat collecting plate and used for adjusting the angle and the position of the heat collecting plate. According to the utility model, heat radiation energy emitted in the billet pile cooling process can be recovered and converted into electric energy or heat energy.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving technology in the metallurgical industry, and in particular to a device for recovering thermal radiation energy in a steel billet stacking cooling area. Background Technology

[0002] In the steel production process, after steel billets are rolled, they need to be naturally cooled to room temperature in a heat exchanger area. This process releases a large amount of heat energy (temperatures typically between 400°C and 800°C) through thermal radiation and convection. Currently, this heat energy is usually lost directly into the environment without being utilized, resulting in energy waste. At the same time, the high-temperature environment of the heat exchanger area may increase the maintenance costs of surrounding equipment.

[0003] In existing technologies, heat recovery often employs waste heat boilers or heat exchangers. However, such equipment requires significant space and complex piping systems, making it difficult to adapt to the dynamic layout of billet stacking areas. Furthermore, the dispersed and intermittent nature of heat radiation from the billet surface leads to low efficiency in traditional thermoelectric conversion technologies. Therefore, there is an urgent need for a new type of energy recovery device that is flexible, efficient, and adaptable. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a device for recovering thermal radiation energy in a billet stacking cooling area, which can recover the thermal radiation energy emitted during the billet stacking cooling process and convert it into electrical energy or thermal energy.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a device for recovering thermal radiation energy in a billet stacking cooling area, comprising:

[0007] A heat collection plate is disposed around the billet stacking cooling field to collect the thermal radiation energy near the billet stacking cooling field.

[0008] A phase change thermal energy storage tank, which is connected to the heat collection plate, is used to store a portion of the thermal radiation energy in the phase change thermal energy storage tank;

[0009] A thermoelectric conversion unit, which is connected to the heat collection plate, is used to convert the remaining thermal radiation energy into electrical energy;

[0010] The adaptive positioning system includes an infrared sensor and a servo drive motor. The infrared sensor is set around the billet cooling field to detect the temperature distribution in the billet cooling field. The servo drive motor is connected to the heat collection plate to adjust the angle and position of the heat collection plate.

[0011] In some embodiments, the heat collection plate is embedded with a parallel heat pipe network.

[0012] In some embodiments, the surface of the heat collector plate is coated with a high radiation absorption coating.

[0013] In some embodiments, the material of the high radiation absorption coating is a silicon carbide-based coating or a ceramic-based composite material coating.

[0014] In some embodiments, multiple heat collection plates are provided and distributed around the billet stacking cooling area.

[0015] In some embodiments, the phase change thermal storage tank is made of paraffin-based composite material.

[0016] This invention provides a device for recovering thermal radiation energy in a steel billet cooling area. Through the synergistic action of a high-absorption-rate heat collection plate, a phase-change thermal storage tank, a thermoelectric conversion unit, and an adaptive positioning system, it efficiently captures and recovers waste heat energy during the steel billet cooling process, storing or converting the heat into electrical energy. This achieves multi-path energy conversion and composite energy recovery, realizing industrial waste heat recovery, reducing industrial energy consumption, and improving the working environment. This invention can simultaneously support direct thermoelectric power generation and thermal storage reuse, increasing the overall energy efficiency ratio to over 35%.

[0017] This invention provides a device for recovering thermal radiation energy in a billet cooling area. Through an adaptive positioning system, it can track the temperature field distribution of the billet in real time and adjust the spatial orientation of the heat collection plates, thereby improving the efficiency of heat recovery. This invention uses infrared imaging and machine learning algorithms to predict the billet cooling curve, achieving dynamic heat source tracking and optimizing the heat collection plate layout.

[0018] This invention provides a device for recovering thermal radiation energy in a billet cooling area. The heat collection units can be flexibly added or removed according to the size of the billet cooling area, offering modularity and scalability to adapt to different production batches. This device features flexible deployment, high energy efficiency, and strong adaptability, providing a green and energy-saving solution for the metallurgical industry. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0020] Figure 1 This is a schematic diagram of a device for recovering thermal radiation energy in a billet stacking cooling area according to some embodiments of the present disclosure. Detailed Implementation

[0021] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0022] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0023] This utility model provides a device for recovering thermal radiation energy in a steel billet cold storage area, such as... Figure 1 As shown, it includes: a heat collection plate, a phase change heat storage tank, a thermoelectric conversion unit, and an adaptive positioning system.

[0024] In some embodiments, heat collection plates are disposed around the billet stacking cooling field to collect thermal radiation energy near the billet stacking cooling field.

[0025] In some examples, the collector plate has an embedded network of parallel heat pipes. The heat pipe network can quickly transfer radiant heat to the heat collection medium.

[0026] For example, the heat pipe network contains molten salt or heat transfer oil.

[0027] In some examples, the surface of the collector plate is coated with a high radiation absorption coating.

[0028] For example, the material of the high radiation absorption coating is a silicon carbide-based coating or a ceramic matrix composite coating. This can increase the absorption rate of thermal radiation energy by the heat collector plate.

[0029] In some embodiments, the phase change thermal energy storage tank is connected to a heat collection plate to store a portion of the thermal radiation energy in the tank for use in subsequent processes.

[0030] In some embodiments, the thermoelectric conversion unit is connected to the heat collection plate to convert residual thermal radiation energy into electrical energy.

[0031] For example, the thermoelectric conversion unit uses a segmented thermoelectric generator (TEG) unit, which converts temperature difference into electrical energy based on the Seebeck effect. The electrical energy can be connected to the power grid of the working plant after being inverted by DC / AC to supplement the power consumption for production.

[0032] Specifically, the TEG group is connected to a circulating water cooling system at the cold end, and maintains high conversion efficiency through a dynamic temperature control algorithm (PID regulation).

[0033] In some embodiments, the adaptive positioning system includes an infrared sensor and a servo drive motor. The infrared sensor is positioned around the billet stacking cooling area to detect the temperature distribution in the billet stacking cooling area. The servo drive motor is connected to the heat collection plate to adjust the angle and position of the heat collection plate.

[0034] For example, an infrared sensor and an Internet of Things (IoT) node are integrated to monitor the temperature distribution in the cold field of the billet stack in real time. Based on the temperature distribution, a servo drive motor is driven to adjust the angle and position of the heat collection plate to maximize the capture of thermal radiation energy and improve the thermal radiation capture efficiency.

[0035] This invention provides a device for recovering thermal radiation energy in a steel billet cooling area. Through the synergistic action of a high-absorption-rate heat collection plate, a phase-change thermal storage tank, a thermoelectric conversion unit, and an adaptive positioning system, it efficiently captures and recovers waste heat energy during the steel billet cooling process, storing or converting the heat into electrical energy. This achieves multi-path energy conversion and composite energy recovery, realizing industrial waste heat recovery, reducing industrial energy consumption, and improving the working environment. This invention can simultaneously support direct thermoelectric power generation and thermal storage reuse, increasing the overall energy efficiency ratio to over 35%.

[0036] In some embodiments, multiple heat collection plates are arranged around the billet cooling area. The heat collection plates are small in size and can be flexibly deployed around the billet cooling area to efficiently recover the waste heat energy generated during the billet cooling process and improve the recovery efficiency of the device.

[0037] In some embodiments, the phase change thermal storage tank is made of paraffin-based composite material.

[0038] Example 1

[0039] This utility model provides a device for recovering thermal radiation energy in a billet cooling area, which is deployed in the continuous casting workshop of a steel plant. The initial temperature of the billet is 650℃ and the cooling time is 8 hours.

[0040] The heat collection plate array is arranged in 5m×5m units, covering an area of ​​200㎡, and the coating absorption rate is ≥92%.

[0041] The heat pipe network conducts some of the heat to the heat storage tank, which maintains the temperature at 300℃. The remaining heat energy drives the TEG unit (temperature difference ΔT = 250℃), converting the heat energy into electrical energy with an output power of 120kW, which can meet the power needs of workshop lighting and auxiliary equipment.

[0042] By analyzing the data detected by the infrared sensor in real time through edge computing nodes, the tilt angle of the heat collection plate is adjusted every 30 minutes via a servo drive motor, thereby improving the heat radiation capture efficiency by 18%.

[0043] Example 2:

[0044] During low-load periods at night, the heat energy in the phase change thermal storage tank is used to preheat the steel billets to be rolled the next day. This allows for the recovery and utilization of waste heat energy, reducing the energy consumption of the gas-fired heating furnace for heating the steel billets to be rolled by 27%.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A device for recovering thermal radiation energy in a steel billet cold storage area, characterized in that: include: A heat collection plate is disposed around the billet stacking cooling field to collect the thermal radiation energy near the billet stacking cooling field. A phase change thermal energy storage tank, which is connected to the heat collection plate, is used to store a portion of the thermal radiation energy in the phase change thermal energy storage tank; A thermoelectric conversion unit, which is connected to the heat collection plate, is used to convert the remaining thermal radiation energy into electrical energy; The adaptive positioning system includes an infrared sensor and a servo drive motor. The infrared sensor is set around the billet cooling field to detect the temperature distribution in the billet cooling field. The servo drive motor is connected to the heat collection plate to adjust the angle and position of the heat collection plate.

2. The device for recovering thermal radiation energy in a billet stacking area as described in claim 1, characterized in that, The heat collection plate is embedded with a network of parallel heat pipes.

3. The device for recovering thermal radiation energy in a billet stacking area as described in claim 1, characterized in that, The surface of the heat collection plate is coated with a high radiation absorption coating.

4. The device for recovering thermal radiation energy in a billet stacking area as described in claim 3, characterized in that, The material of the high radiation absorption coating is a silicon carbide-based coating or a ceramic-based composite material coating.

5. The device for recovering thermal radiation energy in a billet stacking area as described in claim 1, characterized in that, Multiple heat collection plates are installed and distributed around the billet stacking cooling area.

6. The apparatus for recovering thermal radiation energy in a billet stacking area as described in claim 1, characterized in that, The phase change thermal storage tank is made of paraffin-based composite material.

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