Hot air baking system utilizing green power high-frequency electric heating heat storage and energy storage device

Abstract

The utility model discloses a hot air baking system utilizing a green power high-frequency electric heat storage and energy storage device. The hot air baking system is characterized by comprising the heat storage and energy storage device, a high-frequency electric hot air furnace and a heat insulation and heat preservation circulating air duct, the outlet end and the inlet end of the heat and energy storage device are connected to different positions of a workpiece baking channel of the baking system through a heat insulation and heat preservation circulating air outlet barrel and a heat insulation and heat preservation air return barrel correspondingly, and a high-frequency electric hot blast stove is arranged on a pipeline of the heat insulation and heat preservation air return barrel. After the structure is adopted, heat storage and energy storage of the hot air baking system utilizing the green-power high-frequency electric heat storage and energy storage device are circulated in cycles. The effects of absorbing photoelectricity, clipping peaks and filling valleys and stabilizing the operation of a power grid are achieved, a heat source for fossil energy heat supply is replaced, the problem of heat supply environment pollution is thoroughly solved, the operation cost is reduced, the application range of clean energy is widened, and the energy adjustment strategy is achieved.

Description

Technical Field

[0001] The utility model relates to the application of low-carbon technology for green electricity consumption and peak-shaving and valley-filling in power grids in the field of clean energy technology, and in particular to a hot air baking system utilizing green electricity high-frequency electric heating and energy storage technology. Background Art

[0002] Green electricity high-frequency electric hot wind thermal energy storage is an energy technology that combines green electricity (green electricity), high-frequency electric heating technology and thermal energy storage. This technology mainly uses electricity generated by clean energy (such as wind energy, solar energy, etc.), converts electrical energy into thermal energy through high-frequency electric heating equipment, and uses thermal storage materials to store this thermal energy for subsequent use. Its high-frequency electric heating is a technology that converts electrical energy into thermal energy, usually using high-frequency current to pass through specific materials to generate heat; this technology can efficiently convert electrical energy into thermal energy and is suitable for industrial processes that require a large amount of thermal energy. Thermal energy storage technology achieves peak load shifting by storing thermal energy when electricity demand is low and releasing thermal energy when demand is peak; this technology can improve energy utilization efficiency and reduce energy waste. Green electricity high-frequency electric hot wind thermal energy storage technology is a promising energy solution that helps improve energy utilization efficiency, reduce environmental pollution, and promote the large-scale application of renewable energy.

[0003] Green electricity, high-frequency electric hot air thermal energy storage technology can be applied in a variety of scenarios, including industrial waste heat recovery, building heating and cooling, power peak regulation, and renewable energy grid integration. In power systems, thermal storage technology can be used to store electricity as heat and use it for heating, promoting the integration and grid integration of renewable energy sources such as wind power and photovoltaics. However, most high-temperature curing furnaces in plastic spraying production lines, both domestically and internationally, use gas-fired hot air furnaces as their heat source. This not only consumes fossil energy, but also produces nitrogen oxides and large amounts of carbon dioxide during the combustion process, which are released into the surrounding environment, causing environmental pollution.

[0004] Based on this, how to design a hot air baking system that can apply the green electricity high-frequency electric hot air heat storage technology of the high-temperature curing furnace, while automatically adjusting the load conditions to achieve the technical effects of green electricity consumption and peak shaving and valley filling of the power grid, and meet the industrial baking requirements of the high-temperature curing furnace, and also reduce energy consumption, reduce environmental pollution, and reduce operating costs, is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model proposes a hot air baking system that utilizes a green electricity high-frequency electric thermal energy storage device. The system, through a rationally designed structural layout and utilizing the cooperation of the thermal energy storage device and the high-frequency electric hot air furnace, can automatically adjust the load according to the trend of photovoltaic renewable energy power generation and valley electricity changes, thereby absorbing photovoltaic power, shaving peaks and filling valleys, and stabilizing the operation of the power grid, replacing the heat source of fossil energy heating, completely solving the problem of heating environmental pollution, reducing operating costs, expanding the scope of application of clean energy, and realizing the energy adjustment strategy.

[0006] To achieve the above-mentioned purpose, the utility model provides a hot air baking system utilizing a green-electric high-frequency electric thermal storage device, characterized in that: the system comprises a thermal storage device, a high-frequency electric hot air furnace, and an insulated heat-insulating circulating air duct; the outlet end and the inlet end of the thermal storage device are respectively connected to different positions on the workpiece baking channel of the baking system through an insulated heat-insulating circulating air outlet duct and an insulated heat-insulating return air duct, and a high-frequency electric hot air furnace is provided on the insulated heat-insulating return air duct pipe; the thermal storage device comprises a metal shell of the thermal storage device, and a high-temperature resistant heat-insulating nano-aerogel insulation felt is installed inside the metal shell of the thermal storage device, and a stainless steel liner of the thermal storage device is provided inside the high-temperature resistant heat-insulating nano-aerogel insulation felt, and a plurality of heat-storage high-temperature magnesium bricks are provided in the stainless steel liner of the thermal storage device.

[0007] Furthermore, the thermal insulation circulation air outlet duct and the thermal insulation return air duct are connected through a heat storage and energy storage air supply duct, and the thermal insulation circulation air outlet duct and the thermal insulation return air duct are both connected to the workpiece baking channel of the baking system through the thermal insulation circulation air duct.

[0008] Furthermore, the heat storage and energy storage air supply duct is located between the heat insulation circulation air outlet duct and the heat insulation return air duct connected to the heat insulation circulation air duct on the workpiece baking channel of the baking system, and a heat storage and energy storage air supply valve is provided on the heat storage and energy storage air supply duct.

[0009] Furthermore, the insulated circulating air outlet duct is connected to the insulated circulating air duct on the baking system workpiece baking channel, and a baking system circulating air supply valve is provided on the insulated circulating air duct, and the insulated return air duct is connected to the insulated circulating air duct on the baking system workpiece baking channel, and a baking system hot air circulation valve is provided on the insulated circulating air duct.

[0010] Furthermore, the heat-insulating circulating air outlet duct is connected to the metal shell of the heat-storage energy storage device in the heat-storage energy storage device, and a circulating air blower is provided at the connection point and inside the heat-insulating circulating air outlet duct.

[0011] Furthermore, a baking system workpiece conveying chain is installed at the top of the baking system workpiece baking channel, and the baking system workpiece conveying chain is hung with the workpiece to be baked.

[0012] Furthermore, the metal shell of the thermal energy storage device is fixed on the ground

[0013] As a further solution of the present invention, the nighttime system automatic control device can utilize off-peak electricity to store thermal energy in the hot air baking system utilizing the green electricity high-frequency electric heat storage device. First, close the baking system's hot air circulation valve and the baking system's circulating air supply valve, then open the thermal energy storage air supply valve. After turning on the circulating air blower, the high-frequency electric hot air furnace is activated. The high-frequency electric hot air furnace uses electricity to generate high-frequency oscillating eddy currents, producing hot air above 500°C. This air circulates along the thermal energy storage hot air circulation flow direction and is stored in the thermal energy storage high-temperature magnesium bricks within the stainless steel inner tank of the thermal energy storage device.

[0014] As a further embodiment of the present invention, during daytime hours, the system's automatic control device activates the hot air baking system, which utilizes the green-powered high-frequency electric heat storage device, to heat and cure the workpieces required for baking. First, the hot air supply valves for the hot air baking system, which utilizes the green-powered high-frequency electric heat storage device, are closed. The hot air circulation valve and the baking system's circulation supply valve are opened. The circulating blower is activated, and hot air from the baking system flows along the hot air circulation flow direction, heating the baking system's workpiece baking channel. When the temperature in the baking system's workpiece baking channel reaches 210°C, the baking system's workpiece transmission chain carries the workpieces to be baked through the baking system's workpiece baking channel, where they are heated to 210°C for 20 minutes and then automatically exit the production line. During this time, the system's automatic control device activates the high-frequency electric hot air furnace when it detects that the photovoltaic power generation meets the activation requirements. The high-frequency electric hot air furnace generates high-frequency oscillating eddy currents using electrical energy, producing hot air exceeding 500°C. With this structure, the hot air baking system, which utilizes the green-powered high-frequency electric heat storage device, stores heat and energy in a repetitive cycle. It plays a role in absorbing photovoltaic power, shaving peaks and filling valleys, stabilizing the operation of the power grid, replacing the heat source of fossil energy heating, completely solving the problem of environmental pollution caused by heating, reducing operating costs, expanding the scope of application of clean energy, and realizing the energy adjustment strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the nighttime working principle of the hot air baking system of the utility model using a green electricity high-frequency electric heating heat storage energy storage device.

[0017] Figure 2This is a schematic diagram of the daytime working principle of the hot air baking system of the utility model using the green electricity high-frequency electric heating heat storage energy storage device.

[0018] In the figure: 1. Metal shell of thermal storage device; 2. High-temperature resistant thermal insulation nano-aerogel insulation felt; 3. Stainless steel liner of thermal storage device; 4. High-temperature magnesium bricks for thermal storage; 5. Thermal insulation circulation air outlet duct; 6. Thermal insulation return air duct; 7. High-frequency hot air furnace; 8. Thermal insulation circulation air duct; 9. Hot air circulation valve of baking system; 10. Thermal storage air duct; 11. Thermal storage air supply valve; 12. Circulation air supply valve of baking system; 13. Baking channel for workpieces of baking system; 14. Transmission chain of workpieces of baking system; 15. Workpieces to be baked; 16. Circulation air blower; 17. Flow direction of hot air circulation of baking system; 18. Flow direction of hot air circulation of thermal storage. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0020] See also Figures 1 and 2 , expressing a schematic diagram of heat flow under two working states, and in an embodiment of the utility model, the hot air baking system using a green electric high-frequency electric thermal storage energy storage device includes a thermal storage energy storage device, a high-frequency electric hot air furnace 7, and an insulated heat preservation circulating air duct 8; the high-frequency electric hot air furnace 7 is used to supplement the heat of the thermal storage energy storage device, and the outlet end and the inlet end of the thermal storage energy storage device are respectively connected to different positions on the workpiece baking channel 13 of the baking system through an insulated heat preservation circulating air outlet duct 5 and an insulated heat preservation return air duct 6, and a high-frequency electric hot air furnace 7 is provided on the insulated heat preservation return air duct 6 pipeline; the thermal storage energy storage device includes a metal shell 1 of the thermal storage energy storage device, and a high-temperature resistant heat preservation nano aerogel insulation felt 2 is installed inside the metal shell 1 of the thermal storage energy storage device, and a stainless steel inner liner 3 of the thermal storage energy storage device is provided inside the high-temperature resistant heat preservation nano aerogel insulation felt 2, and a plurality of heat storage high-temperature magnesium bricks 4 are provided in the stainless steel inner liner 3 of the thermal storage energy storage device. The heat storage device provides a hot air source to the workpiece baking channel 13 of the baking system through the heat-insulating and heat-preserving circulating air duct 8, so as to perform a baking process on the workpiece 15 that needs to be baked.

[0021] In addition, as an implementation scheme for the high-frequency electric hot air furnace 7 to supplement the heat of the heat storage device, the heat-insulating circulating air outlet duct 5 and the heat-insulating return air duct 6 are connected via a heat storage air supply duct 10, and the heat-insulating circulating air outlet duct 5 and the heat-insulating return air duct 6 are both connected to the baking system workpiece baking channel 13 via the heat-insulating circulating air duct 8. The top of the baking system workpiece baking channel 13 is equipped with a baking system workpiece conveying chain 14, and the baking system workpiece conveying chain 14 is hung with workpieces 15 that need to be baked. The heat-insulating circulating air outlet duct 5 is connected to the metal shell 1 of the heat storage device in the heat storage device, and a circulating air supply fan 16 is provided at the connection point and inside the heat-insulating circulating air outlet duct 5. As shown in the attached figure Figure 1 and attached Figure 2 As shown, the heat storage and energy supply duct 10 is located between the two heat storage and energy supply ducts 8 on the workpiece baking channel 13 of the baking system, which are connected to the heat storage and energy supply duct 5 and the heat storage and energy return air duct 6, and the heat storage and energy supply duct 10 is provided with a heat storage and energy supply valve 11, which is used to open or close the internal circulation heat supplement state.

[0022] Switching between the two working states requires the use of three valve structures, including a baking system hot air circulation valve 9, a heat storage and energy storage air supply valve 11, and a baking system circulation air supply valve 12. The thermal insulation circulation air outlet duct 5 is connected to the thermal insulation circulation air duct 8 on the baking system workpiece baking channel 13, and a baking system circulation air supply valve 12 is provided. The thermal insulation return air duct 6 is connected to the thermal insulation circulation air duct 8 on the baking system workpiece baking channel 13, and a baking system hot air circulation valve 9 is provided.

[0023] As a further detailed explanation of this embodiment, Figure 1 and attached Figure 2It is clearly stated in the figure that the heat storage device includes a metal shell 1 of the heat storage device, a high temperature resistant heat-insulating nano-aerogel insulation felt 2, a stainless steel inner shell 3 of the heat storage device, and a high temperature magnesium brick 4 for heat storage. The metal shell 1 of the heat storage device is fixed to the ground. It can be clearly seen from the accompanying drawings that the metal shell 1 of the heat storage device is equipped with a high temperature resistant heat-insulating nano-aerogel insulation felt 2, and the high temperature resistant heat-insulating nano-aerogel insulation felt 2 is isolated and protected by the stainless steel inner shell 3 of the heat storage device. The stainless steel inner shell 3 of the heat storage device is equipped with a sufficient capacity of high temperature magnesium bricks 4 for storing high temperature heat energy. This embodiment does not specifically limit the number of high temperature magnesium bricks 4 for heat storage, and the number can be adjusted according to the baking output requirements to meet the process parameter requirements. It can be clearly seen in the accompanying drawings that on the left side of the figure, one end of the metal shell 1 of the heat storage device is connected to one end of the heat-insulating circulating air outlet 5; the bottom end of the heat-insulating circulating air outlet 5 is equipped with a circulating air blower 16. On the right side of the figure, the other end of the insulated circulating air outlet duct 5 is connected to the workpiece baking channel 13 of the baking system via the insulated circulating air duct 8. The other end of the metal housing 1 of the thermal energy storage device is connected to the bottom end of the insulated return air duct 6. The other end of the insulated return air duct 6 is connected to one end of a high-frequency electric hot air furnace 7.

[0024] As a further illustration of this embodiment: the nighttime system automatic control device utilizes off-peak electricity to store thermal energy in the hot air baking system utilizing the green electricity high-frequency electric thermal storage device, first closing the baking system hot air circulation valve 9 and the baking system circulating air supply valve 12, and opening the thermal storage air supply valve 11; after turning on the circulating air supply fan 16, the high-frequency electric hot air furnace 7 is started. The high-frequency electric hot air furnace 7 generates high-frequency oscillating vortexes through electric energy to generate hot air above 500°C, which circulates along the thermal storage hot air circulation flow direction 18 to the thermal storage high-temperature magnesium bricks 4 in the stainless steel inner tank 3 of the thermal storage device for thermal storage.

[0025] As a further explanation of the present invention: During daytime working hours, the system automatic control device controls the hot air baking system utilizing the green electricity high frequency electric heat storage device to heat and cure the workpiece 15 that needs to be baked in the baking system. First, close the green electricity high frequency hot air heat storage device and the hot air baking system to heat the baking system energy storage air supply valve 11, and open the baking system hot air circulation valve 9 and the baking system circulation air supply valve 12. Turn on the circulating blower 16, and the hot air of the baking system flows along the hot air circulation flow direction 17 of the blasting system to heat the baking channel 13 of the baking system workpiece. When the temperature of the baking channel 13 of the baking system workpiece reaches 210°C, the baking system workpiece transmission chain 14 carries the workpiece 15 that needs to be baked to the baking channel 13 of the baking system workpiece for 20 minutes of heating and curing, and then automatically exits the production line. During this period, the system automatic control device starts the high-frequency electric hot air furnace 7 when it detects that the photovoltaic power generation power meets the starting requirements of the high-frequency electric hot air furnace 7. The high-frequency electric hot air furnace 7 uses electric energy to generate high-frequency oscillating eddy currents to generate hot air above 500°C to store energy for the high-temperature magnesium bricks 4 for heat storage, thereby converting green light energy into thermal energy and storing it for release and heat supply when baking is needed.

[0026] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0027] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0028] Professionals may further appreciate that the unit structures and steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0029] The steps of the methods described in conjunction with the embodiments disclosed herein can be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0030] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot air baking system using a green electricity high frequency electric heat storage device, characterized by: The system comprises a heat storage device, a high-frequency electric hot air furnace (7), and a heat-insulating circulating air duct (8); the outlet and inlet of the heat storage device are connected to different positions on a workpiece baking channel (13) of a baking system through a heat-insulating circulating air outlet duct (5) and a heat-insulating return air duct (6), respectively, and a high-frequency electric hot air furnace (7) is provided on the heat-insulating return air duct (6); The heat storage device comprises a heat storage device metal shell (1), a high temperature resistant heat-insulating nano-aerogel insulation felt (2) is installed inside the heat storage device metal shell (1), a heat storage device stainless steel liner (3) is arranged inside the high temperature resistant heat-insulating nano-aerogel insulation felt (2), and a plurality of heat storage device high temperature magnesium bricks (4) are arranged inside the heat storage device stainless steel liner (3).

2. The hot air baking system using a green electricity high frequency electric heat storage device according to claim 1, characterized in that: The heat-insulating circulating air outlet duct (5) and the heat-insulating returning air duct (6) are connected via a heat-storage and energy-storage air supply duct (10), and the heat-insulating circulating air outlet duct (5) and the heat-insulating returning air duct (6) are both connected to a workpiece baking channel (13) of a baking system via a heat-insulating circulating air duct (8).

3. The hot air baking system using a green electricity high frequency electric heat storage device according to claim 2, characterized in that: The heat storage and energy storage air supply duct (10) is located between the heat insulation and heat preservation circulating air outlet duct (5), the heat insulation and heat preservation return air duct (6), and the heat insulation and heat preservation circulating air duct (8) connected to the workpiece baking channel (13) of the baking system, and the heat storage and energy storage air supply duct (10) is provided with a heat storage and energy storage air supply valve (11).

4. The hot air baking system using a green electricity high frequency electric heat storage device according to claim 3, characterized in that: The heat-insulating circulating air outlet duct (5) is connected to the heat-insulating circulating air duct (8) on the workpiece baking channel (13) of the baking system, and a baking system circulating air supply valve (12) is provided on the heat-insulating circulating air duct (8) on the workpiece baking channel (13) of the baking system. The heat-insulating returning air duct (6) is connected to the heat-insulating circulating air duct (8) on the workpiece baking channel (13) of the baking system, and a baking system hot air circulation valve (9) is provided on the baking system.

5. The hot air baking system using a green electricity high frequency electric heat storage device according to claim 4, characterized in that: The heat-insulating circulating air outlet duct (5) is connected to the heat-storage energy storage device metal shell (1) in the heat-storage energy storage device, and a circulating air blower (16) is provided at the connection point and inside the heat-insulating circulating air outlet duct (5).

6. A hot air baking system using a green electricity high frequency electric heat storage device according to claim 1 or 2, characterized in that: A baking system workpiece conveying chain (14) is installed at the top of the baking system workpiece baking channel (13), and a workpiece (15) to be baked is hung on the baking system workpiece conveying chain (14).

7. The hot air baking system using a green electricity high frequency electric heat storage device according to claim 1, characterized in that: The metal shell (1) of the heat and energy storage device is fixed on the ground.

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