Energy storage heating device

Abstract

The present invention discloses an energy storage and heat supply device, comprising an outer shell, a sealed cavity formed therein, a plurality of energy storage and heat supply modules disposed within the sealed cavity, a liquid flow main disposed on each of the plurality of energy storage and heat supply modules, a liquid medium flowing through the liquid flow main disposed therein, the energy storage and heat supply modules comprising a plurality of energy storage and heat supply units, an internal support insulation disposed between the plurality of energy storage and heat supply units, and a liquid flow pipeline disposed on each of the energy storage and heat supply units; the energy storage and heat supply units are configured as a multi-layer honeycomb structure having a plurality of unit cavities arranged horizontally, the plurality of unit cavities comprising a heating unit cavity, a solid heat storage unit cavity, and a liquid flow unit cavity; a heating body is disposed within the heating unit cavity, the solid heat storage unit cavity is filled with a fixed heat-conducting medium, the solid heat storage unit cavity is disposed around the heating unit cavity, and a liquid heat exchange channel connected to the liquid flow unit cavity is further disposed within the solid heat storage unit cavity. The energy storage and heat supply device of the present invention has the advantages of high heat conduction efficiency and uniform temperature of the heat transfer medium.

Description

Technical Field

[0001] The present invention relates to the technical field of molten salt energy storage and heating, and in particular to an energy storage and heating device. Background Art

[0002] The core of the molten salt energy storage and heating system is based on the characteristics of molten salt with a high boiling point at normal pressure and its suitability for high-temperature heat storage. It is mainly used in the fields of industrial waste heat utilization and clean heating.

[0003] The energy storage heating system of the existing technology heats and stores energy in a solid heat-conducting medium through a resistive heater, exchanges air heat with the solid heat-conducting medium, and then transfers the heat in the air to the target medium through a water heater, steam heater or thermal oil heater pressurized by a fan. The energy storage heating system of the existing technology generally has defects such as low heat transfer efficiency, uneven heat distribution, and large temperature difference in the heat transfer medium. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the prior art to a certain extent. To this end, the present invention provides an energy storage heating device having the advantages of high heat conduction efficiency and uniform temperature of the heat transfer medium.

[0005] In a first aspect, to achieve the above-mentioned objectives, the present invention provides an energy storage and heat supply device, comprising an outer shell, a sealed cavity formed therein, a plurality of energy storage and heat supply modules disposed within the sealed cavity, a liquid flow main pipe disposed on the plurality of energy storage and heat supply modules, a liquid medium flowing through the liquid flow main pipe, the energy storage and heat supply module comprising a plurality of energy storage and heat supply units, an internal support and insulation body disposed between the plurality of energy storage and heat supply units, and a liquid flow branch pipe disposed on each energy storage and heat supply unit;

[0006] The energy storage and heating unit is configured as a multi-layer honeycomb structure having a plurality of unit cavities arranged in a horizontal direction, wherein the plurality of unit cavities include a heating unit cavity, a solid heat storage unit cavity, and a liquid flow unit cavity. A heating body is provided in the heating unit cavity, the solid heat storage unit cavity is filled with a fixed heat conductive medium, the liquid medium flows in the liquid flow unit cavity, the solid heat storage unit cavity is arranged around the heating unit cavity, and a liquid heat exchange channel communicating with the liquid flow unit cavity is further provided in the solid heat storage unit cavity.

[0007] In the present technical solution, the energy storage and heat supply device includes a plurality of energy storage and heat supply modules, and the energy storage and heat supply module includes a plurality of energy storage and heat supply units. The heat conduction efficiency and structural strength of the energy storage and heat supply unit are improved by setting the energy storage and heat supply unit as a multi-layer honeycomb structure, and the solid heat storage unit cavity is set around a heating unit cavity. The solid heat storage unit is adjacent to a heating unit cavity, so that the solid heat storage unit can quickly absorb the heat energy of the heating body in the heating unit cavity. The temperature difference of the solid medium in each solid heat storage unit cavity is small, and a liquid flow unit cavity adjacent to it is also set around each solid heat storage unit cavity; and then a liquid heat exchange channel connected to the liquid flow unit cavity is set in the solid heat storage unit cavity, so that the liquid medium in the liquid heat exchange channel can quickly absorb the heat energy accumulated in the solid heat storage unit cavity, and then the liquid medium is connected from the liquid flow unit cavity along the pipeline to the temperature regulating tank for heating. Through the above arrangement, the heat conduction efficiency can be improved while the temperature difference is reduced, and the volume of the energy storage and heat exchange device can be reduced.

[0008] Preferably, the multi-layer honeycomb structure is configured as a regular hexagonal honeycomb structure, with six solid thermal storage unit cavities surrounding each heating unit cavity, and the liquid flow unit cavities being disposed between the solid thermal storage unit cavities. Using a regular hexagonal honeycomb structure can further improve heat conduction efficiency and reduce temperature differences between the solid thermal storage unit cavities.

[0009] Preferably, the liquid heat exchange channel is configured as a straight channel arranged at an angle to the horizontal, with a height difference formed between the ends of the liquid heat exchange channel connected to the liquid flow unit cavities on both sides of the solid thermal storage unit cavity. The liquid heat exchange channel interconnects two adjacent liquid flow unit cavities, and the liquid heat exchange channel is arranged at an angle, thereby forming a height difference at both ends of the liquid heat exchange channel, facilitating the flow of the liquid heat exchange medium within the liquid heat exchange channel by gravity.

[0010] Preferably, the angle between the liquid heat exchange channel and the horizontal direction is set to 30°~60°.

[0011] In order to facilitate the setting and ensure the stability of the liquid medium flow rate in the liquid heat exchange channel, the inclination angle of the liquid heat exchange channel is set to 30°~60°.

[0012] Preferably, the liquid flow main pipe includes a liquid inlet main pipe for conveying liquid medium to the liquid flow unit cavities and a liquid outlet main pipe for collecting the liquid medium in the liquid flow unit cavities. The liquid inlet ends of the liquid flow unit cavities of several of the energy storage heating units are provided with liquid flow branch pipes inserted into the liquid inlet main pipe. The depth of each liquid flow branch pipe inserted into the liquid inlet main pipe decreases sequentially along the flow direction of the liquid medium in the liquid inlet main pipe, so that the maximum flow rate difference of the liquid medium flowing from the liquid inlet main pipe to each liquid flow unit cavity is less than 10%. By setting the depth of the liquid flow branch pipe inserted into the liquid inlet main pipe to decrease sequentially along the flow direction of the liquid medium in the liquid inlet main pipe, the flow rate of the liquid medium flowing from the liquid inlet main pipe to each liquid flow unit cavity is kept substantially consistent.

[0013] Preferably, the heating body is configured as a clustered electric heating rod.

[0014] Preferably, the liquid medium includes at least one of thermal oil, binary molten salt and ternary molten salt.

[0015] Preferably, the internal support insulation body includes a steel structure support body and insulation bricks, and the insulation bricks are set to be at least one of diatomaceous earth insulation bricks or lightweight clay insulation bricks.

[0016] Preferably, it also includes a temperature control component arranged at one end of the energy storage and heating module, the temperature control component includes a temperature control tank, an agitator and a delivery pump, the temperature control tank is used to adjust the liquid medium to a preset temperature, the agitator is arranged in the temperature control tank and is used to stir the liquid medium in the temperature control tank, the temperature control tank pipeline is connected to the liquid inlet main pipe and the liquid outlet main pipe, the liquid medium in the temperature control tank, the liquid inlet main pipe, the liquid flow unit cavity and the liquid outlet main pipe circulates under the drive of the delivery pump, and the delivery pump is also used to transport the liquid medium in the temperature control tank to the outside for heating.

[0017] Preferably, the agitator includes a motor and a stirring assembly, the stirring assembly includes a bearing, a rotating shaft and a plurality of blade groups, the blade groups are arranged on the rotating shaft and rotate with the rotating shaft, the rotating shaft is fixedly connected to the output shaft of the motor through the bearing and rotates under the drive of the motor.

[0018] These features and advantages of the present invention will be further disclosed in the following detailed description and accompanying drawings. The preferred embodiments and means of the present invention will be fully illustrated in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. Furthermore, although multiple features, elements, and components may be present in each of the following text and accompanying drawings, they may be labeled with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the energy storage heating device of this embodiment (the outer shell is partially removed);

[0021] Figure 2 is a horizontal cross-sectional schematic diagram of the energy storage heating device of this embodiment;

[0022] Figure 3 1 is a schematic vertical cross-sectional view of the energy storage and heating module of this embodiment along the liquid flow main pipe;

[0023] Figure 4 Schematic diagram of the structure of the energy storage heating unit of this embodiment;

[0024] Figure 5 This embodiment Figure 2 A magnified view of point A;

[0025] Figure 6 This is a connection diagram of the energy storage heating unit of this embodiment;

[0026] Figure 7 Schematic diagram of the structure of the agitator of this embodiment.

[0027] Among them, 100, outer shell; 200, energy storage and heating module; 210, energy storage and heating unit; 211, heating unit cavity; 212, solid heat storage unit cavity; 213, liquid heat exchange channel; 214, clustered electric heating rod; 215, liquid flow unit cavity; 220, inner support insulation; 230, liquid flow branch pipe; 240, support tray; 250, support column; 300, liquid flow main pipe; 400, temperature control tank; 500, agitator; 510, motor; 520, rotating shaft; 530, bearing; 540, blade group; 600, delivery pump. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to explain the present invention and are not to be construed as limiting the present invention.

[0029] Reference in this specification to "one embodiment," "an example," or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in some embodiments" in various places in the specification is not necessarily referring to the same embodiment.

[0030] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0031] In the related art, the energy storage heating equipment heats the solid heat storage module through a resistive heater, and then exchanges heat with the solid heat storage module through gas. After being pressurized by a fan, the heat is transferred to the target medium in a water heater, steam heater or thermal oil heater. The thermal conductivity of air is only 0.026W / (m·K), the thermal conductivity efficiency is low, and a large temperature difference is required to achieve a better conduction effect. The thermal conductivity of ternary salt is about 0.4 W / (m·K), the thermal conductivity of binary salt is about 0.5 W / (m·K), and the thermal conductivity of thermal oil is 0.1~0.2W / (m·K). Therefore, the inventors thought of replacing the air heat conduction of the existing technology with a flowing molten salt heat conduction medium, and through the special structural design of the solid heat storage module, the thermal conductivity efficiency of the energy storage heating equipment is improved and the equipment volume is reduced.

[0032] like Figure 1-4As shown, an energy storage heating device includes an outer shell 100, a sealed cavity is formed in the outer shell 100, and a plurality of energy storage heating modules are arranged in the sealed cavity. A liquid flow main pipe 300 is provided on the plurality of energy storage heating modules, and a liquid medium flows in the liquid flow main pipe 300. The energy storage heating module includes a plurality of energy storage heating units 210, and an inner support insulation body 220 is provided between the plurality of energy storage heating units 210. The energy storage heating unit 210 is further provided with a liquid flow branch pipe 230; the energy storage heating unit 210 is provided along the water A multi-layer honeycomb structure is provided with a plurality of unit cavities arranged in a horizontal direction, wherein the plurality of unit cavities include a heating unit cavity 211, a solid heat storage unit cavity 212 and a liquid flow unit cavity 215. A heating body is provided in the heating unit cavity 211, the solid heat storage unit cavity 212 is filled with a fixed heat conductive medium, the liquid medium flows in the liquid flow unit cavity 215, the solid heat storage unit cavity 212 is arranged around the heating unit cavity 211, and a liquid heat exchange channel 213 communicating with the liquid flow unit cavity 215 is further provided in the solid heat storage unit cavity 212. In this embodiment, the energy storage and heating device has an overall rectangular structure, with multiple energy storage and heating modules 200 regularly arranged inside. Each energy storage module is composed of multiple regularly arranged energy storage and heating units 210. Specifically, the energy storage and heating device includes five evenly arranged energy storage and heating modules 200, and each energy storage and heating module 200 includes four evenly arranged energy storage and heating units 210. In other embodiments, the energy storage device may also include other numbers or regularly arranged energy storage and heating modules 200 and energy storage and heating units 210.

[0033] Specifically, the outer shell 100 and the inner support insulation 220 are composed of steel structure, diatomaceous earth insulation bricks, or clay insulation bricks. Specifically, the outer shell 100 is constructed using steel and diatomaceous earth insulation bricks. Diatomaceous earth insulation bricks have good structural strength and excellent thermal insulation. The inner support insulation 220 is composed of steel and lightweight clay insulation bricks. The steel structure ensures internal support strength, while the lightweight clay insulation bricks ensure that the inner support insulation 220 has good thermal insulation. The inner side of the outer shell 100 is also covered with a sealed steel channel to prevent liquid medium from leaking through the gaps between the insulation bricks.

[0034] In this technical solution, the energy storage and heating device includes a plurality of energy storage and heating modules 200, and the energy storage and heating module 200 includes a plurality of energy storage and heating units 210. By setting the energy storage and heating unit 210 as a multi-layer honeycomb structure, the heat conduction efficiency and structural strength of the energy storage and heating unit 210 are improved, and the solid heat storage unit cavity 212 is set around a heating unit cavity 211. The solid heat storage unit is adjacent to a heating unit cavity 211, so that the solid heat storage unit can quickly absorb the heat energy of the heating body in the heating unit cavity 211, and the temperature difference of the solid medium in each solid heat storage unit cavity 212 is small. , and each solid thermal storage unit cavity 212 is further surrounded by a liquid flow unit cavity 215 adjacent thereto; a liquid heat exchange channel 213 communicating with the liquid flow unit cavity 215 is then provided in the solid thermal storage unit cavity 212, so that the liquid medium in the liquid heat exchange channel 213 can quickly absorb the heat energy accumulated in the solid thermal storage unit cavity 212, and then the liquid medium is connected from the liquid flow unit cavity 215 along the pipeline to the temperature regulating tank for temperature regulation, and then transported to the outside by the delivery pump for heat supply. The above arrangement can improve the heat conduction efficiency while reducing the temperature difference and reducing the volume of the energy storage and heat exchange device.

[0035] In some embodiments, as Figure 2 、 5 As shown, the multi-layer honeycomb structure is configured as a regular polygonal honeycomb structure. In a specific embodiment, the regular polygonal deformed honeycomb structure is configured as a regular hexagonal honeycomb structure. Six solid thermal storage unit cavities 212 are arranged around each heating unit cavity 211, and each solid thermal storage unit cavity 212 is embedded with a liquid heat exchange channel 213. This shape ensures that the solid thermal storage unit cavities 212 are tightly coupled, facilitating installation. At the same time, the regular polyhedron structure increases the heat exchange area of ​​the entire heat exchange and heating unit, facilitating heat transfer between the solid thermal storage medium and the liquid thermal conductive medium. Configuring the multi-layer honeycomb structure as a regular hexagonal honeycomb structure can further improve heat conduction efficiency and reduce the temperature difference between the solid thermal storage unit cavities 212.

[0036] In some embodiments, as Figure 3 、 4 As shown, the liquid heat exchange channel 213 is configured as a straight channel inclined relative to the horizontal, with a height difference formed between the ends of the liquid heat exchange channel 213 connected to the liquid flow pipes on both sides of the energy storage and heating unit 210. The liquid heat exchange channel 213 interconnects two adjacent liquid flow unit cavities 215. The liquid heat exchange channel 213 is inclined, creating a height difference between the two ends of the liquid heat exchange channel 213, facilitating the flow of the liquid heat exchange medium within the liquid heat exchange channel 213 by gravity.

[0037] In some embodiments, as Figure 4, the angle between the liquid heat exchange channel 213 and the horizontal direction is set to 30°~60°. In order to facilitate the setting and ensure the stability of the flow rate of the liquid medium in the liquid heat exchange channel 213, the inclination angle of the liquid heat exchange channel 213 is set to 30°~60°. In a specific embodiment, Figure 3 As shown, the angle between the liquid heat exchange channel 213 and the vertical channel wall is α, and the angle between the liquid heat exchange channel 213 and the horizontal direction is 90°-α. The value range of α is 30°-60°, and the value range of 90°-α is also 30°-60°. The energy storage heat exchange unit 210 is also provided with a support plate 240 at the bottom, and a support column 250 is also provided at the bottom of the support plate 240. The support column 250 and the support plate 240 form a stable support structure, which stably supports the energy storage heat supply unit.

[0038] In some embodiments, as Figure 3 、 6As shown, the liquid flow main pipe 300 includes a liquid inlet main pipe for conveying liquid medium to the liquid flow unit cavity 215 and a liquid outlet main pipe for collecting the liquid medium in the liquid flow unit cavity 215. The liquid inlet ends of the liquid flow unit cavities 215 of the energy storage heating units 210 are each provided with a liquid inlet branch pipe inserted into the liquid inlet main pipe. The depth of each liquid inlet branch pipe inserted into the liquid inlet main pipe decreases along the flow direction of the liquid medium in the liquid inlet main pipe, so that the maximum flow rate difference of the liquid medium flowing from the liquid inlet main pipe to each liquid flow unit cavity 215 is less than 10%. By arranging the depth of the liquid flow branch pipe 230 inserted into the liquid inlet main pipe to decrease along the flow direction of the liquid medium in the liquid inlet main pipe, the flow rate of the liquid medium flowing from the liquid inlet main pipe to each liquid flow unit cavity 215 is basically consistent. Specifically, the liquid inlet end of each liquid flow unit cavity 215 is provided with a liquid inlet branch pipe inserted into the liquid inlet main pipe, that is, the liquid medium in the liquid inlet main pipe flows into each liquid flow unit cavity 215 through the liquid inlet branch pipe, and then flows from the liquid inlet end of the liquid flow unit cavity 215 to the liquid outlet end. The liquid outlet end of the liquid flow unit cavity 215 is further provided with a liquid outlet branch pipe connected to the liquid outlet main pipe, and the liquid medium that completes heat exchange with the solid heat conductive medium is transported to the temperature regulating tank 400, thereby forming a circulating flow of the liquid medium and completing heat transfer during the circulation process. The liquid inlet end of the liquid flow unit cavity 215 of the energy storage heating unit 210 is provided with a liquid inlet branch pipe inserted into the liquid inlet main pipe. The depth of each liquid inlet branch pipe inserted into the liquid inlet main pipe decreases successively along the flow direction of the liquid medium in the liquid inlet main pipe, that is, the liquid inlet branch pipe that is closer to the liquid inlet end of the liquid flow main pipe 300 is inserted into the liquid inlet main pipe at a higher height. The closer the position of the liquid inlet branch pipe inserted into the liquid flow main pipe 300 is to the liquid inlet end of the liquid inlet main pipe, the greater the liquid flow rate, and the deeper the depth of the liquid inlet branch pipe inserted into the liquid inlet main pipe, the smaller the liquid flow rate. Therefore, different insertion depths are set according to the distance between the liquid inlet branch pipe and the specific liquid inlet end of the liquid main pipe, so that the flow rate of the liquid flow main pipe 300 flowing into each liquid flow unit cavity 215 can be basically consistent, thereby making the temperature of the liquid medium in each liquid flow unit cavity 215 more uniform and the temperature difference of the solid heat storage medium in the energy storage heating device smaller.

[0039] In some embodiments, the heating element is configured as a clustered electric heating rod 214, and the liquid medium includes at least one of thermal oil, binary molten salt, and ternary molten salt. Clustered electric heating rods 214 are used to convert electrical energy into thermal energy. In specific embodiments, the liquid medium can be configured as a combination of any one or more of thermal oil, binary molten salt, and ternary molten salt, or other liquid media known in the art.

[0040] In some embodiments, as Figure 2As shown, it also includes a temperature control component disposed at one end of the energy storage heating module 200. The temperature control component includes a temperature control tank 400, an agitator 500, and a delivery pump. The temperature control tank 400 is used to adjust the liquid medium to a preset temperature. The agitator 500 is disposed in the temperature control tank 400 and is used to stir the liquid medium in the temperature control tank 400. The temperature control tank 400 pipeline is connected to the liquid inlet manifold and the liquid outlet manifold. The liquid medium in the temperature control tank 400, the liquid inlet manifold, the liquid flow unit cavity 215, and the liquid outlet manifold circulates under the drive of the delivery pump. The temperature control tank 400 is generally conical in shape. The temperature control tank 400 is used to adjust the liquid medium to a preset temperature. The agitator 500 is used to mix the liquid medium in the temperature control tank 400 so that the liquid medium of different temperatures is fully mixed to obtain the liquid medium of the target temperature. The delivery pump is also used to transport the liquid medium of the target temperature to the outside for heating.

[0041] In some embodiments, as Figure 7 As shown, the agitator 500 includes a motor 510 and a stirring assembly, and the stirring assembly includes a bearing 530, a rotating shaft 520 and a plurality of blade groups 540. The blade group 540 is arranged on the rotating shaft 520 and rotates with the rotating shaft 520. The rotating shaft 520 is fixedly connected to the output shaft of the motor 510 through the bearing 530 and rotates under the drive of the motor 510.

[0042] In summary, the energy storage and heat supply device of this embodiment improves the heating efficiency by providing the energy storage and heat supply unit 210 with a honeycomb structure, and provides a liquid heat exchange channel 213 connected to the liquid flow unit cavity 215 in the solid heat storage unit cavity 212, so that the liquid medium in the liquid heat exchange channel 213 can quickly absorb the heat energy accumulated in the solid heat storage unit cavity 212, and then the liquid medium is connected from the liquid flow unit cavity 215 along the pipeline to the temperature control tank for temperature adjustment, and then transported to the outside by the delivery pump for heat supply. Through the above arrangement, the heat conduction efficiency can be improved while reducing the temperature difference and reducing the volume of the energy storage and heat exchange device.

[0043] The energy storage and heating device of this embodiment generates heat energy through the clustered electric heating rods 214 during the heat storage process. The heat energy is first transferred to the solid heat conductive medium in the solid heat storage unit cavity 212 adjacent to the clustered electric heating rods 214. The solid heat conductive medium in the solid heat storage unit cavity 212 then transfers the heat energy to the liquid heat exchange channel 213 in the solid heat storage unit cavity 212 and the liquid medium in the liquid flow unit cavity 215 adjacent to the solid heat storage unit cavity 212. The liquid medium is then driven by the delivery pump to flow. The high-temperature liquid medium flows from the energy storage and heating module 200 to the temperature regulating tank 400, and the low-temperature liquid medium flows from the temperature regulating tank 400 to the energy storage and heating module 200. The temperature regulating tank 400 is also filled with low-temperature liquid medium. The liquid medium in the temperature regulating tank 400 is stirred and mixed by the stirrer 500. The liquid media of different temperatures are mixed in proportion to obtain a liquid medium of the target temperature. The delivery pump then delivers the liquid medium of the target temperature to the outside for heat supply.

[0044] The foregoing description describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. An energy storage and heating device, comprising an outer shell (100), wherein a sealed cavity is formed in the outer shell (100), characterized in that: Several groups of energy storage and heating modules are arranged in the sealed cavity, several of the energy storage and heating modules are provided with a liquid flow main pipe (300), a liquid medium flows in the liquid flow main pipe (300), the energy storage and heating module includes several energy storage and heating units (210), an internal support insulation body (220) is provided between the several energy storage and heating units (210), and the energy storage and heating units (210) are further provided with a liquid flow branch pipe (230); The energy storage and heat supply unit (210) is configured as a multi-layer honeycomb structure having a plurality of unit cavities arranged in a horizontal direction, wherein the plurality of unit cavities include a heating unit cavity (211), a solid heat storage unit cavity (212), and a liquid flow unit cavity (215); a heating body is provided in the heating unit cavity (211); a fixed heat-conducting medium is filled in the solid heat storage unit cavity (212); the liquid medium flows in the liquid flow unit cavity (215); the solid heat storage unit cavity (212) is arranged around the heating unit cavity (211); and a liquid heat exchange channel (213) communicating with the liquid flow unit cavity (215) is further provided in the solid heat storage unit cavity (212); The liquid flow main pipe (300) comprises a liquid inlet main pipe for conveying liquid medium to the liquid flow unit cavity (215) and a liquid outlet main pipe for collecting the liquid medium in the liquid flow unit cavity (215). Liquid inlet ends of the liquid flow unit cavities (215) of the plurality of energy storage heating units (210) are provided with liquid flow branch pipes (230) inserted into the liquid inlet main pipe. The depth of each liquid flow branch pipe (230) inserted into the liquid inlet main pipe decreases sequentially along the flow direction of the liquid medium in the liquid inlet main pipe, so that the maximum flow difference of the liquid medium flowing from the liquid inlet main pipe to each liquid flow unit cavity (215) is less than 10%.

2. The energy storage heating device according to claim 1, characterized in that: The multi-layer honeycomb structure is a regular hexagonal honeycomb structure, six solid heat storage unit cavities (212) are arranged around each heating unit cavity (211), and the liquid flow unit cavity (215) is arranged between the solid heat storage unit cavities (212).

3. The energy storage heating device according to claim 2, characterized in that: The liquid heat exchange channel (213) is configured as a straight channel inclined relative to the horizontal direction, and a height difference is formed between the two ends of the liquid heat exchange channel (213) connected to the liquid flow unit cavities (215) on both sides of the solid heat storage unit cavity (212).

4. The energy storage heating device according to claim 3, characterized in that: The angle between the liquid heat exchange channel (213) and the horizontal direction is set to 30° to 60°.

5. The energy storage heating device according to any one of claims 1 to 4, characterized in that: The heating body is configured as a bundled electric heating rod (214).

6. The energy storage heating device according to any one of claims 1 to 4, characterized in that: The liquid medium includes at least one of heat transfer oil, binary molten salt and ternary molten salt.

7. The energy storage heating device according to any one of claims 1 to 4, characterized in that: The inner support insulation body (220) comprises a steel structure support body and insulation bricks, wherein the insulation bricks are configured as at least one of diatomaceous earth insulation bricks and lightweight clay insulation bricks.

8. The energy storage heating device according to claim 1, characterized in that: The invention also includes a temperature regulating component arranged at the end of the energy storage and heating module (200), the temperature regulating component including a temperature regulating tank (400), a stirrer (500) and a delivery pump, the temperature regulating tank (400) is used to absorb heat energy in a liquid medium, the stirrer (500) is arranged in the temperature regulating tank (400) and is used to stir the liquid medium in the temperature regulating tank (400), the temperature regulating tank (400) pipeline is connected to the liquid inlet main pipe and the liquid outlet main pipe, the liquid medium in the temperature regulating tank (400), the liquid inlet main pipe, the liquid flow unit cavity (215) and the liquid outlet main pipe flows under the drive of the delivery pump, and the delivery pump is also used to deliver the liquid medium in the temperature regulating tank (400) to the outside for heat supply.

9. The energy storage heating device according to claim 8, characterized in that: The stirrer (500) includes a motor (510) and a stirring assembly. The stirring assembly includes a bearing (530), a rotating shaft (520) and a plurality of blade groups (540). The blade groups (540) are arranged on the rotating shaft (520) and rotate along with the rotating shaft (520). The rotating shaft (520) is fixedly connected to the output shaft of the motor (510) through the bearing (530) and rotates under the drive of the motor (510).

Images