Heat supply system based on solid heat storage

Abstract

The present disclosure relates to a solid heat storage-based heating system, comprising a solid heat storage module, which is heated by an electric heating mode; a heat network structure, which is internally provided with a liquid channel; and a heat preservation tank, which is connected to the heat network structure; in the case that the solid heat storage module is heated to a first preset temperature, gas is heated by the solid heat storage module to form high-temperature gas, which is used to heat the heat network structure, so that the heat network structure outputs heating hot water and / or stores the heating hot water in the heat preservation tank; in the case that the solid heat storage module stops heating and the temperature of the solid heat storage module is lower than a second preset temperature, the heat network structure is heated by high-temperature liquid stored in the heat preservation tank. The solid heat storage module stores heat in a low-price power supply period and releases heat in a power supply stop period, so as to achieve the effect of reducing the emission of coal combustion pollutants and reducing the heating cost.

Description

Technical Field

[0001] This disclosure relates to the technical field of solid thermal energy storage heating, and more particularly to a heating system based on solid thermal energy storage. Background Technology

[0002] During the winter heating season, coal-fired heating is typically required, which easily pollutes the environment and contributes to smog. Coal stoves used for heating in winter, as well as industrial boilers without cleaning and purification devices, directly release flue gas and coal dust into the air, causing air pollution. Related technologies aim to gradually replace coal stoves and industrial boilers with electric heating to reduce emissions of pollutants from coal combustion. However, electric heating is costly, and inexpensive off-peak electricity at night and renewable energy sources such as wind power are often limited by time of day, making them difficult to utilize.

[0003] Therefore, it is necessary to propose a heating system based on solid thermal storage to at least partially solve the problems existing in the prior art. Utility Model Content

[0004] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this disclosure proposes a heating system based on solid thermal storage.

[0006] In view of this, a heating system based on solid thermal storage is proposed according to an embodiment of this disclosure, comprising:

[0007] Solid thermal storage modules are heated by electric heating.

[0008] The heating network structure has a liquid channel inside, which has an inlet end and an outlet end. The inlet end is used to input heating return water, and the outlet end is used to output heating hot water.

[0009] The heat preservation tank has an input end and an output end. The output end is connected to the liquid inlet end through a first valve body, and the input end is connected to the liquid outlet end through a second valve body. The heat preservation tank is used to store the liquid output from the heating network structure.

[0010] When the solid thermal storage module is heated to the first preset temperature, the gas is heated by the solid thermal storage module to form high-temperature gas, which then heats the heat network structure so that the hot water is output from the liquid outlet and / or the hot water is stored in the heat preservation tank.

[0011] When the solid thermal storage module stops heating up and the temperature of the solid thermal storage module is lower than the second preset temperature, the first valve body is opened, and the high-temperature liquid stored in the heat preservation tank is used to heat the heat network structure.

[0012] The first preset temperature is higher than the second preset temperature.

[0013] In one feasible implementation, when the solid thermal storage module stops heating and the temperature is between a first preset temperature and a second preset temperature, the solid thermal storage module releases the stored thermal energy to heat the gas to a high temperature, and the high temperature gas supplies heat to the heat network structure so that the hot water is output from the liquid outlet and / or the hot water is stored in the heat preservation tank.

[0014] In one feasible embodiment, the gas is flue gas after boiler dust removal, the flue gas temperature is 120°C to 150°C, and the flue gas temperature reaches 180°C to 800°C after being heated by the solid thermal storage module; or

[0015] The gas mentioned above is air that has exchanged heat with the aforementioned heat network structure. The temperature of the air is 50°C to 60°C. After being heated by the aforementioned solid thermal storage module, the temperature of the air reaches 180°C to 800°C.

[0016] In one feasible implementation, the aforementioned insulated tank is a thermocline hot water storage tank.

[0017] In one feasible implementation, the above-mentioned solid thermal storage module includes:

[0018] Multiple solid thermal storage units, wherein the solid thermal storage units are generally cylindrical in shape, and the middle part of the cylindrical structure is used for the passage of the gas.

[0019] A support frame, on which multiple solid thermal storage units are mounted.

[0020] In one feasible implementation, the above-mentioned solid thermal storage module further includes:

[0021] A limiting member is disposed in the gap between adjacent solid thermal storage units to limit the solid thermal storage units and to block the flow of gas.

[0022] In one feasible implementation, the number of the above-mentioned solid thermal storage units is 1,000 to 2,000, and the solid thermal storage module composed of multiple of the above-mentioned solid thermal storage units has an overall cubic structure.

[0023] In one feasible implementation, the above-mentioned solid thermal storage unit includes:

[0024] tube body;

[0025] An electric heating rod is disposed within the aforementioned tube.

[0026] A heat storage material layer is fitted over the aforementioned pipe body.

[0027] In one feasible implementation, the thickness of the heat storage material layer is 30 to 50 mm;

[0028] The thermal conductivity of the aforementioned heat storage materials ranges from 40 to 80 W / (m·K).

[0029] In one feasible implementation, the wall thickness of the tube body is 2 to 5 mm;

[0030] The inner diameter of the aforementioned tube is 50 to 70 mm;

[0031] The aforementioned pipe bodies include 20G pipe bodies, 15CrMo pipe bodies, and stainless steel pipe bodies.

[0032] Compared to existing technologies, this disclosure offers at least the following advantages: The solid-state thermal storage-based heating system provided in this disclosure includes a solid-state thermal storage module, a heat network structure, and an insulation tank. The solid-state thermal storage module can be heated and store thermal energy via electric heating. The heat network structure has an internal liquid channel with an inlet and an outlet. Return water from the heating supply can be supplied to the liquid channel through the inlet. The liquid in the heat network structure can exchange heat with the gas heated by the solid-state thermal storage module to increase the liquid temperature, and then hot water can be output through the outlet. The insulation tank has an input and an output. The output is connected to the inlet via a first valve body, and the input is connected to the outlet via a second valve body. By controlling the opening and closing of the first and second valve bodies, the insulation tank can store the liquid output from the heat network structure or output the stored liquid to the heat network structure. With this setup, during off-peak electricity and / or renewable energy generation periods at night, the solid thermal storage module heats up electrically. Once the module reaches a preset temperature, the gas is heated to a high temperature. This high-temperature gas flows to the heating network structure and exchanges heat with the liquid in the liquid channel, heating the liquid to form hot water. Hot water can then be output from the outlet for heating purposes, and a second valve can be opened to store a portion of the hot water in an insulated tank. During other electricity usage periods, the solid thermal storage module stops heating and releases its stored heat energy to heat the gas, forming high-temperature gas. This high-temperature gas flows to the heating network structure and exchanges heat with the liquid in the liquid channel, heating the liquid to form hot water. Hot water can then be output from the outlet for heating purposes, and a second valve can be opened to store a portion of the hot water in an insulated tank. As the heat energy stored in the solid thermal storage module is consumed, and the temperature of the solid thermal storage module falls below the second preset temperature, the heat energy provided by the module is relatively low. This results in a lower temperature for the heating gas. By opening the first valve, the high-temperature liquid stored in the insulation tank is transported to the heating network structure, heating the liquid in the liquid channel. Combined with the heating effect of the gas, this ensures that the heating network structure can continuously and stably provide hot water. This achieves the effect of reducing coal-fired pollutant emissions and lowering heating costs. Attached Figure Description

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0034] Figure 1 A schematic structural diagram of a solid thermal energy storage-based heating system according to an embodiment of this disclosure;

[0035] Figure 2 A schematic structural diagram of another solid-energy-storage-based heating system provided in this disclosure;

[0036] Figure 3 This is a schematic structural diagram of a solid thermal energy storage unit according to an embodiment of the present disclosure.

[0037] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0038] 100 Solid thermal storage-based heating system, 110 Solid thermal storage module, 120 Heat network structure, 121 Liquid inlet, 122 Liquid outlet, 130 Insulation tank, 131 Input end, 132 Output end, 140 Solid thermal storage unit, 141 Pipe body, 142 Electric heating rod, 143 Thermal storage material layer, 150 Circulating fan. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0040] like Figure 1 As shown, a heating system 100 based on solid thermal storage is proposed according to an embodiment of this disclosure, comprising:

[0041] The solid thermal storage module 110 is heated by electric heating; the heat network structure 120 has a liquid channel inside, which has an inlet end and an outlet end. The inlet end is used to input heating return water, and the outlet end is used to output heating hot water; the heat preservation tank 130 has an input end and an output end. The output end is connected to the inlet end through a first valve body, and the input end is connected to the outlet end through a second valve body. The heat preservation tank 130 is used to store the liquid output from the heat network structure 120; wherein, in the solid thermal storage module 110 When the temperature rises to the first preset temperature, the gas is heated by the solid heat storage module 110 to form a high-temperature gas, which then heats the heat network structure 120 so that the hot water is output from the liquid outlet and / or the hot water is stored in the insulation tank 130. When the solid heat storage module 110 stops heating and the temperature of the solid heat storage module 110 is lower than the second preset temperature, the first valve is opened, and the high-temperature liquid stored in the insulation tank 130 heats the heat network structure 120. The first preset temperature is higher than the second preset temperature.

[0042] It is understood that the solid-state thermal energy storage-based heating system 100 provided in this embodiment includes a solid-state thermal energy storage module 110, a heat network structure 120, and an insulation tank 130. The solid-state thermal energy storage module 110 can be heated and store thermal energy via electric heating. The heat network structure 120 may have a liquid channel with an inlet and an outlet. Heated return water can be supplied to the liquid channel through the inlet. The liquid in the heat network structure 120 can exchange heat with the gas heated by the solid-state thermal energy storage module 110 to increase the liquid temperature, and then hot water can be output through the outlet. The insulation tank 130 has an input and an output. The output is connected to the inlet via a first valve body, and the input is connected to the outlet via a second valve body. By controlling the opening and closing of the first and second valve bodies, the insulation tank 130 can store the liquid output from the heat network structure 120, or output the stored liquid to the heat network structure 120. With this configuration, during nighttime hours when cheap off-peak electricity and / or renewable energy are used, the solid thermal storage module 110 is heated electrically. Once the solid thermal storage module 110 reaches a first preset temperature, the gas can pass through it and be heated to form high-temperature gas. This high-temperature gas flows to the heating network structure 120 to exchange heat with the liquid in the liquid channel, heating the liquid to form hot water. Hot water can then be output from the outlet for heating purposes, and a portion of the hot water can be stored in the insulation tank 130 by opening the second valve. During other electricity usage periods, the solid thermal storage module 110 stops heating and releases its stored heat energy to heat the gas, forming high-temperature gas. This high-temperature gas flows to the heating network structure 120 to exchange heat with the liquid in the liquid channel, heating the liquid to form hot water. Hot water can then be output from the outlet for heating purposes, and a portion of the hot water can be stored in the insulation tank 130 by opening the second valve. As the heat energy stored in the solid thermal storage module 110 is consumed, and the temperature of the solid thermal storage module 110 falls below the second preset temperature, the heat energy provided by the solid thermal storage module 110 is relatively low, resulting in a low temperature of the heating gas. By opening the first valve, the high-temperature liquid stored in the insulation tank 130 is transported to the heating network structure 120 to heat the liquid in the liquid channel. Combined with the heating effect of the gas, this ensures that the heating network structure 120 can continuously and stably provide hot water. This achieves the effect of reducing coal-fired pollutant emissions and lowering heating costs, enabling long-term uninterrupted heating and ensuring heating efficiency.

[0043] Understandably, the temperature of the heating return water can be 40°C to 50°C. The high-temperature gas heated by the solid heating module can raise the temperature of the heating return water to 85°C to 95°C. Part of it is used as heating hot water for heating, and the other part is stored in the heat preservation tank 130.

[0044] For example, the heat network structure 120 may be a serpentine heat network pipe structure to increase the heat exchange area with the gas and improve the heat exchange efficiency.

[0045] In some examples, when the solid thermal storage module 110 stops heating and the temperature is between a first preset temperature and a second preset temperature, the solid thermal storage module 110 releases the stored thermal energy to heat the gas to a high temperature, and the high temperature gas supplies heat to the heat network structure 120 so that the hot water is output from the liquid outlet and / or the hot water is stored in the heat preservation tank 130.

[0046] Understandably, after the power supply is stopped and the solid thermal storage module 110 stops heating, the solid thermal storage module 110 releases the stored heat energy, and the temperature of the solid thermal storage module 110 continues to decrease. During the process of the solid thermal storage module 110's temperature dropping to between the first preset temperature and the second preset temperature, the solid thermal storage module 110 still has a relatively high temperature to heat the gas to form high-temperature gas, and can use the high-temperature gas to heat the heating network structure 120, thereby heating the heating return water to the heating hot water, thereby outputting the heating hot water, and can store part of the heating hot water in the heat preservation tank 130.

[0047] Understandably, the second preset temperature can be 490℃. When power is supplied and the solid thermal storage module 110 heats up, once the temperature exceeds 490℃, the second valve can be opened to transfer the heated hot water after heat exchange in the heat network structure 120 to the insulation tank 130 for storage. When power is stopped and the solid thermal storage module 110 releases heat to cool down, once the temperature drops below 490℃, the first valve can be opened to release heat energy through the heated hot water in the insulation tank 130 to heat the return water in the heat network structure 120.

[0048] In some examples, the gas is flue gas after boiler dust removal, the flue gas temperature is 120°C to 150°C, and the flue gas temperature reaches 180°C to 800°C after being heated by the solid heat storage module 110; or the gas is air after heat exchange with the heat network structure 120, the air temperature is 50°C to 60°C, and the air temperature reaches 180°C to 800°C after being heated by the solid heat storage module 110.

[0049] Understandably, the gas used can be flue gas from conventional thermal power plant boilers after dust removal. After filtration, the waste heat of the flue gas can be utilized to reduce energy consumption. The flue gas temperature can be 120℃ to 150℃. After being heated by the solid thermal storage module 110, the temperature can reach 180℃ to 800℃, forming a high-temperature gas that can exchange heat with the heating and return water within the heat network structure 120, ensuring heat exchange efficiency. Alternatively, air can be used, which is readily available and low in cost. The initial temperature of air can be 50℃ to 60℃. After being heated by the solid thermal storage module 110, the temperature can reach 180℃ to 800℃, forming a high-temperature gas that can also exchange heat with the heating and return water within the heat network structure 120, ensuring heat exchange efficiency.

[0050] It is understandable that, in the case of flue gas, such as Figure 1 As shown, the arrows indicate the direction of flue gas flow. After heat exchange, the flue gas temperature drops to 50°C to 60°C and is then sent to the inlet of the boiler induced draft fan. In the case of air, as... Figure 2 As shown, the arrows indicate the direction of air flow. After heat exchange, the air temperature drops to 50°C to 60°C and can be sent to the solid heat storage module 110 by the circulating fan 150 to continue being heated by the solid heat storage module 110.

[0051] For example, the solid thermal storage module 110 can have an electric heating power of 13,500W, which can heat flue gas with a flow rate of 26t / h to 140t / h and a temperature of 140°C, or air with a temperature of 55°C, to a high temperature of 193°C to 772°C, so as to heat the 42°C supply return water in the heating network structure 120 to 90°C. The thermal storage time can be 8 hours, and the heating time can be 24 hours, realizing 24-hour uninterrupted heating. The heating area can be 120,000 m². 2 Up to 140,000 m 2 .

[0052] In some examples, the aforementioned insulated tank 130 is a thermocline hot water storage tank.

[0053] It is understandable that the insulated tank 130 can be a thermocline hot water storage tank. The thermocline hot water storage tank can utilize the large temperature difference in the thermocline to achieve a high energy conversion efficiency. Moreover, the temperature change in the thermocline is small, which is conducive to long-term stable operation. Furthermore, water is a renewable resource, which has a smaller impact on the environment and meets the requirements of sustainable development.

[0054] In some examples, such as Figure 1 As shown, the solid thermal energy storage module 110 includes: a plurality of solid thermal energy storage units 140, each of which is cylindrical in shape, with the middle portion of the cylindrical structure used for the passage of the gas; and a support frame on which the plurality of solid thermal energy storage units 140 are disposed.

[0055] It is understood that the solid thermal storage module 110 may be provided with multiple solid thermal storage units 140 and a support frame. Each solid thermal storage unit 140 can independently store heat, and the support frame provides fixed support for multiple solid thermal storage units 140 to form the solid thermal storage module 110. The solid thermal storage unit 140 may have a cylindrical structure, with gas passing through the center. During the gas's passage through the cylindrical structure, the solid thermal storage unit 140 can heat the gas to form high-temperature gas.

[0056] In some examples, the solid thermal storage module 110 further includes a limiting member disposed in the gap between adjacent solid thermal storage units 140 for limiting the solid thermal storage units 140, and the limiting member is used to block the gas flow.

[0057] It is understood that the solid thermal storage module 110 may also be provided with limiting components. The limiting components may be set between the gaps of each adjacent solid thermal storage unit 140, so as to support and limit the solid thermal storage unit 140, thereby improving the stability of the solid thermal storage module 110. When the gas flows to the limiting component, it will be blocked and backflowed by the limiting component, and then flow out through the middle of the cylindrical structure, so as to ensure that most of the gas is heated by the solid thermal storage unit 140, thereby improving the heating efficiency and heating effect.

[0058] In some examples, the number of the above-mentioned solid thermal storage units 140 is 1,000 to 2,000, and the solid thermal storage module 110 composed of multiple of the above-mentioned solid thermal storage units 140 has an overall cubic structure.

[0059] It is understandable that the number of solid thermal storage units 140 can be 1,000 to 2,000, and through the action of support frames and limiting components, the solid thermal storage module 110 presents an overall cubic structure to have better stability.

[0060] For example, the number of solid thermal storage units 140 can be 1245, and the volume of the formed solid thermal storage module 110 is 150m³. 3 .

[0061] In some examples, such as Figure 2 As shown, the solid thermal storage unit 140 includes: a tube 141; an electric heating rod 142 disposed inside the tube 141; and a thermal storage material layer 143 sleeved on the tube 141.

[0062] Understandably, the solid thermal energy storage unit 140 may include a tube 141, an electric heating rod 142, and a thermal energy storage material layer 143. The tube 141 is cylindrical, and the thermal energy storage material layer 143, also cylindrical, is disposed around the periphery of the tube 141. The electric heating rod 142 may be disposed inside the tube 141. With this arrangement, by supplying electricity to the electric heating rod 142 to generate heat, the electric heating rod 142 radiates heat to the tube 141, thereby storing thermal energy through the thermal energy storage material layer 143.

[0063] For example, the diameter of the electric heating rod 142 may be 25 mm, and the heat storage material of the heat storage material layer 143 may be silicon carbide. The length of each solid heat storage unit 140 is 8 m to 12 m.

[0064] In some examples, the thickness of the heat storage material layer 143 is 30 to 50 mm; the thermal conductivity of the heat storage material is in the range of 40 to 80 W / (m·K).

[0065] It is understandable that the thickness of the heat storage material layer 143 can be selected from 30mm to 50mm; the thermal conductivity of the heat storage material can be selected from 40W / (m·K) to 80W / (m·K) to ensure the heat storage effect of the solid heat storage unit 140.

[0066] In some examples, the wall thickness of the tube 141 is 2 to 5 mm; the inner diameter of the tube 141 is 50 to 70 mm; the tube 141 includes 20G tube 141, 15CrMo tube 141 and stainless steel tube 141.

[0067] It is understandable that the wall thickness of the tube body 141 can be selected from 2mm to 5mm, and the inner diameter of the tube body 141 is from 50mm to 70mm. The tube body 141 includes 20G tube body 141, 15CrMo tube body 141 and stainless steel tube body 141, in order to ensure that the tube body 141 has good structural strength and heat conduction effect.

[0068] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0069] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0070] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and 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.

[0071] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0072] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0073] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0074] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0075] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A heating system based on solid thermal energy storage, characterized in that, include: Solid thermal storage modules are heated by electric heating. A heating network structure, wherein a liquid channel is provided inside the heating network structure, the liquid channel having an inlet end and an outlet end, the inlet end being used to input heating return water, and the outlet end being used to output heating hot water; The insulated tank has an input end and an output end. The output end is connected to the liquid inlet end through a first valve body, and the input end is connected to the liquid outlet end through a second valve body. The insulated tank is used to store the liquid output from the heating network structure. Wherein, when the solid thermal storage module is heated to the first preset temperature, the gas is heated by the solid thermal storage module to form high-temperature gas, which then heats the heat network structure so that the hot water is output from the liquid outlet and / or the hot water is stored in the heat preservation tank; When the solid thermal storage module stops heating and the temperature of the solid thermal storage module is lower than the second preset temperature, the first valve body is opened to supply heat to the heat network structure through the high-temperature liquid stored in the heat preservation tank. The first preset temperature is higher than the second preset temperature.

2. The heating system based on solid thermal storage according to claim 1, characterized in that, When the solid thermal storage module stops heating and the temperature is between the first preset temperature and the second preset temperature, the solid thermal storage module releases the stored thermal energy to heat the gas to a high temperature. The high temperature gas then heats the heating network structure so that the hot water is output from the liquid outlet and / or the hot water is stored in the insulation tank.

3. The heating system based on solid thermal storage according to claim 1, characterized in that, The gas is flue gas from the boiler after dust removal, and the flue gas temperature is 120℃ to 150℃. After being heated by the solid thermal storage module, the flue gas temperature reaches 180℃ to 800℃; or The gas is air that has exchanged heat with the heat network structure. The air temperature is 50°C to 60°C. After being heated by the solid thermal storage module, the air temperature reaches 180°C to 800°C.

4. The heating system based on solid thermal storage according to claim 1, characterized in that, The insulated tank is a thermostatic hot water storage tank.

5. The heating system based on solid thermal storage according to claim 4, characterized in that, The solid thermal storage module includes: Multiple solid thermal storage units, each solid thermal storage unit having an overall cylindrical structure, with the middle section of the cylindrical structure used for the passage of gas; A support frame, on which multiple solid thermal storage units are disposed.

6. The heating system based on solid thermal storage according to claim 5, characterized in that, The solid thermal storage module also includes: A limiting member is disposed in the gap between adjacent solid thermal storage units to limit the solid thermal storage units and to block the flow of gas.

7. The heating system based on solid thermal storage according to claim 6, characterized in that, The number of solid thermal storage units is 1,000 to 2,000, and the solid thermal storage module composed of multiple solid thermal storage units has an overall cubic structure.

8. The heating system based on solid thermal storage according to claim 7, characterized in that, The solid thermal storage unit includes: tube body; An electric heating rod is disposed inside the tube. A heat storage material layer is fitted onto the pipe body.

9. The heating system based on solid thermal storage according to claim 8, characterized in that, The thickness of the heat storage material layer is 30 to 50 mm. The thermal conductivity of the heat storage material ranges from 40 to 80 W / (m·K).

10. The heating system based on solid thermal storage according to claim 9, characterized in that, The wall thickness of the tube is 2 to 5 mm; The inner diameter of the tube is 50 to 70 mm; The tube body includes 20G tube body, 15CrMo tube body and stainless steel tube body.

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