Heat storage device
By designing a heat storage device including a heat storage shell and a heat exchange assembly, the energy waste caused by converting electric energy into heat energy in the prior art is solved, peak shaving and heating demands of thermal power plants are realized, and the flexibility and efficiency of thermal power plants are improved.
Patent Information
- Application Number
- CN202510376267.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-06-27
Smart Images
Figure CN120212784A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heat storage, and in particular, to a heat storage device. Background Art
[0002] The installed capacities of wind power and photovoltaic power generation are increasing day by day, and their proportions in the power grid are getting larger and larger. This requires thermal power units to perform deep peak shaving at appropriate times to reduce the power generation load. As a flexibility peak shaving means that can achieve the decoupling of heat and power, the heat storage technology has been widely applied in many thermal power enterprises.
[0003] In the related art, the heat storage devices in thermal power plants mainly use electric heat storage. Such a heat storage device uses the surplus power of the power plant to convert electrical energy into heat energy. Although the heat storage device can solve the peak shaving problem of thermal power enterprises, converting electrical energy into heat energy will cause energy waste and cannot meet the peak shaving and heat supply requirements of thermal power plants. Summary of the Invention
[0004] The present invention provides a heat storage device to solve the problem in the related art that converting electrical energy into heat energy to ensure peak shaving requirements will cause energy waste and cannot meet the peak shaving and heat supply requirements of thermal power plants.
[0005] The present invention provides a heat storage device, which includes: a heat storage housing having a heat exchange channel, a gas inlet and a gas outlet are provided on the heat storage housing, both the gas inlet and the gas outlet are communicated with the heat exchange channel, and a heat storage member is arranged in the heat exchange channel; a heat exchange assembly including a heat exchange member and a driving fan, the heat exchange member has a first heat exchange pipeline, an air inlet pipe and an air outlet pipe are arranged between the heat exchange member and the heat storage housing, the first end of the air inlet pipe is communicated with the air outlet of the first heat exchange pipeline, the second end of the air inlet pipe is communicated with the gas inlet, the first end of the air outlet pipe is communicated with the gas outlet, the second end of the air outlet pipe is communicated with the air inlet of the first heat exchange pipeline, and the driving fan is arranged on the air inlet pipe to enable the gas to circulate between the heat exchange channel and the first heat exchange pipeline.
[0006] Further, a partition plate is arranged in the heat storage housing, the partition plate extends in the horizontal direction, one end of the partition plate is connected to the inner side wall of the heat storage housing, and there is a ventilation opening between the other end of the partition plate and the inner side wall of the heat storage housing. The partition plate divides the inner cavity of the heat storage housing into at least two heat exchange channels, and adjacent two heat exchange channels are communicated through the ventilation opening.
[0007] Further, a plurality of partition plates are arranged in the heat storage housing, the plurality of partition plates are arranged at intervals along the height direction of the heat storage housing, and adjacent two partition plates are respectively connected to two opposite inner side walls of the heat storage housing.
[0008] Further, a blocking structure for blocking the heat storage member is arranged at the ventilation opening.
[0009] Further, the blocking structure includes a wire mesh.
[0010] Further, the heat storage member includes a plurality of ceramic balls, and the plurality of ceramic balls are all arranged in the heat exchange channel.
[0011] Further, the heat exchanger further has a second heat exchange pipeline capable of exchanging heat with the first heat exchange pipeline.
[0012] Further, the driving fan includes a first blower, and the first blower is arranged on the intake pipe.
[0013] Further, the driving fan further includes a second blower, and the second blower is arranged on the outlet pipe.
[0014] Further, a concrete heat insulation layer is arranged on the outer side wall of the heat storage housing.
[0015] Applying the technical solution of the present invention, the heat storage device includes a heat storage housing and a heat exchange assembly. A heat exchange channel is arranged in the heat storage housing. The gas inlet and gas outlet on the heat storage housing are both connected to the heat exchange channel. In this way, gas can be discharged into the heat exchange channel through the gas inlet to flow and exchange heat, and the gas after heat exchange in the heat exchange channel is discharged through the gas outlet. Specifically, the heat exchanger of the heat exchange assembly has a first heat exchange pipeline. The gas outlet of the first heat exchange pipeline is connected to the gas inlet through the intake pipe, and the gas inlet of the first heat exchange pipeline is connected to the gas outlet through the outlet pipe. When heat storage treatment is required in the heat exchange channel, high-temperature gas is introduced into the heat exchanger to exchange heat in the first heat exchange pipeline. And under the action of the driving fan, the high-temperature gas heated in the first heat exchange pipeline is discharged into the heat exchange channel of the heat storage housing through the gas outlet of the first heat exchange pipeline and the intake pipe. Since a heat storage member is arranged in the heat exchange channel, the heat of the high-temperature gas is stored by the heat storage member. Then, the cooled gas is discharged to the heat exchanger through the gas outlet and the outlet pipe, thereby ensuring that the heat storage housing can store heat. When the heat stored in the heat storage member in the heat exchange channel needs to be released later, the driving fan works, so that the cold air blown into the heat exchange channel exchanges heat with the heat storage member in the heat exchange channel. Thus, the cold air can be heated into hot air under the action of the heat storage member, and the hot air is discharged through the gas outlet and discharged into the first heat exchange pipeline of the heat exchanger. In this way, it is convenient to change the liquid water into steam under the action of the hot air when the liquid discharged into the heat exchanger exchanges heat with the hot air, and then the high-temperature steam after heat exchange is discharged from the heat exchanger. In this way, it is convenient for the thermal power plant to not only meet the peak shaving demand but also use the steam to meet the heating demand of the thermal power plant. Description of the Drawings
[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:
[0017] Figure 1 A schematic diagram of a heat storage device provided according to an embodiment of the present invention is shown;
[0018] Figure 2 A schematic diagram of a heat storage element placed in a heat exchange channel provided according to an embodiment of the present invention is shown.
[0019] Among them, the above-mentioned drawings include the following reference numerals:
[0020] 10, heat storage housing; 11, heat exchange channel; 12, gas inlet; 13, gas outlet; 14, heat storage element; 15, partition plate; 16, ventilation opening; 17, blocking structure; 171, metal mesh;
[0021] 20, heat exchange assembly; 21, heat exchange element; 211, first heat exchange pipeline; 212, second heat exchange pipeline; 22, driving fan; 221, first blower; 222, second blower; 23, intake pipe; 24, outlet pipe;
[0022] 30, concrete heat insulation layer. Detailed implementation manners
[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0024] Such as Figure 1 And Figure 2As shown in the figure, an embodiment of the present invention provides a heat storage device, which includes a heat storage housing 10 and a heat exchange assembly 20. The heat storage housing 10 has a heat exchange channel 11. A gas inlet 12 and a gas outlet 13 are provided on the heat storage housing 10. Both the gas inlet 12 and the gas outlet 13 are communicated with the heat exchange channel 11. A heat storage member 14 is arranged in the heat exchange channel 11. The heat exchange assembly 20 includes a heat exchange member 21 and a driving fan 22. The heat exchange member 21 has a first heat exchange pipeline 211. An intake pipe 23 and an exhaust pipe 24 are arranged between the heat exchange member 21 and the heat storage housing 10. The first end of the intake pipe 23 is communicated with the air outlet of the first heat exchange pipeline 211, the second end of the intake pipe 23 is communicated with the gas inlet 12, the first end of the exhaust pipe 24 is communicated with the gas outlet 13, and the second end of the exhaust pipe 24 is communicated with the air inlet of the first heat exchange pipeline 211. The driving fan 22 is arranged on the intake pipe 23 to enable the gas to circulate between the heat exchange channel 11 and the first heat exchange pipeline 211.
[0025] Apply the heat storage device provided in this embodiment. The heat storage device includes a heat storage housing 10 and a heat exchange component 20. A heat exchange channel 11 is provided inside the heat storage housing 10. The gas inlet 12 and the gas outlet 13 on the heat storage housing 10 are both connected to the heat exchange channel 11. In this way, gas can be discharged into the heat exchange channel 11 through the gas inlet 12 to flow and exchange heat, and the gas after heat exchange in the heat exchange channel 11 is discharged through the gas outlet 13. Specifically, the heat exchange element 21 of the heat exchange component 20 has a first heat exchange pipeline 211. The air outlet of the first heat exchange pipeline 211 is connected to the gas inlet 12 through an intake pipe 23, and the air inlet of the first heat exchange pipeline 211 is connected to the gas outlet 13 through an outlet pipe 24. When heat storage treatment is required in the heat exchange channel 11, high-temperature gas is introduced into the heat exchange element 21 for heat exchange in the first heat exchange pipeline 211. Under the action of the driving fan 22, the high-temperature gas heated in the first heat exchange pipeline 211 is discharged into the heat exchange channel 11 of the heat storage housing 10 through the air outlet of the first heat exchange pipeline 211 and the intake pipe 23. Since a heat storage element 14 is provided in the heat exchange channel 11, the heat storage element 14 is used to store the heat of the high-temperature gas. Then, the cooled gas is discharged into the heat exchange element 21 through the gas outlet 13 and the outlet pipe 24, thereby ensuring that the heat storage housing 10 can store heat. When the heat stored in the heat storage element 14 in the heat exchange channel 11 needs to be released later, the driving fan 22 works, so that the cold air blown into the heat exchange channel 11 exchanges heat with the heat storage element 14 in the heat exchange channel 11. Thus, the cold air can be heated to become hot air under the action of the heat storage element 14. The hot air is discharged through the gas outlet 13 and discharged into the first heat exchange pipeline 211 of the heat exchange element 21. In this way, it is convenient to change the liquid water into steam by exchanging heat with the hot air for the liquid discharged into the heat exchange element 21. Then, the high-temperature steam after heat exchange is discharged from the heat exchange element 21. In this way, it is convenient for the thermal power plant to not only meet the peak shaving demand but also use the steam to meet the heat supply demand of the thermal power plant.
[0026] Such as Figure 1As shown in the figure, a partition plate 15 is provided inside the heat storage housing 10. The partition plate 15 extends horizontally. One end of the partition plate 15 is connected to the inner side wall of the heat storage housing 10, and there is a ventilation opening 16 between the other end of the partition plate 15 and the inner side wall of the heat storage housing 10. The partition plate 15 divides the inner cavity of the heat storage housing 10 into at least two heat exchange channels 11, and adjacent two heat exchange channels 11 are communicated through the ventilation opening 16. With the above structure, by providing the partition plate 15 inside the heat storage housing 10, one end of the partition plate 15 is connected to the inner side wall of the heat storage housing 10, and the gap between the other end of the partition plate 15 and the inner side wall of the heat storage housing 10 forms the ventilation opening 16. In this way, it can be ensured that under the action of the partition plate 15, the inner cavity of the heat storage housing 10 can be divided into at least two heat exchange channels 11, and the two heat exchange channels 11 are communicated by the ventilation opening 16. Heat storage elements 14 are provided in the heat exchange channels 11. In this way, when the high-temperature gas stores heat in the heat exchange channels 11, the high-temperature gas can flow in at least two heat exchange channels 11. In this way, the flow path of the high-temperature gas in the heat storage housing 10 can be extended, and the heat of the high-temperature gas can be stored in the heat storage elements 14, ensuring that the heat storage elements 14 can store the heat of the high-temperature gas. Then, when heat is released under the action of the driving fan 22, cold air is blown into at least two heat exchange channels 11, and the heat stored in the heat storage elements 14 is exchanged with the cold air. In this way, the cold air can be exchanged into high-temperature gas and introduced into the heat exchange element 21 to exchange heat with the liquid water. In this way, the liquid water can be exchanged into high-temperature steam and introduced into the thermal power plant to meet the steam demand.
[0027] As Figure 1 shown in the figure, a plurality of partition plates 15 are provided inside the heat storage housing 10. The plurality of partition plates 15 are arranged at intervals along the height direction of the heat storage housing 10, and adjacent two partition plates 15 are respectively connected to two opposite inner side walls of the heat storage housing 10. With the above structure, by providing a plurality of partition plates 15, the plurality of partition plates 15 can be arranged at intervals along the height direction of the heat storage housing 10. In this way, adjacent two partition plates 15 can be respectively connected to two opposite inner side walls of the heat storage housing 10, thereby forming a plurality of heat exchange channels 11 and improving the heat storage or heat release capacity of the heat storage elements 14.
[0028] As Figure 1 shown in the figure, a blocking structure 17 for blocking the heat storage element 14 is provided at the ventilation opening 16. With the above structure, by providing the blocking structure 17 at the ventilation opening 16, the blocking structure 17 can block the heat storage element 14 from falling through the ventilation opening 16, thereby ensuring that the heat storage element 14 can be placed in the heat exchange channel 11.
[0029] As Figure 1As shown, the blocking structure 17 includes a wire mesh 171. By providing the wire mesh 171, it can not only ensure that the heat storage member 14 is blocked by the wire mesh 171, but also ensure that the gas flows in the heat exchange channels 11 through the mesh holes of the wire mesh 171 between two adjacent heat exchange channels 11, so as to ensure that the heat storage or heat release function is achieved by using the heat storage member 14.
[0030] As Figure 2 shown, the heat storage member 14 includes a plurality of ceramic balls, and the plurality of ceramic balls are all arranged in the heat exchange channels 11. With the above structure, the plurality of ceramic balls are arranged in the heat exchange channels 11, so that the ceramic balls can absorb and store the heat of the high-temperature gas and release the heat to the cold air or other media when needed, thereby realizing the effective utilization of thermal energy. This ceramic ball heat storage body has good thermal conductivity and can quickly absorb and release heat. Its spherical structure causes the air flow to form a turbulent flow when passing through, enhancing the heat transfer efficiency.
[0031] It should be noted that in this embodiment, the ceramic balls are irregularly arranged and fixed in the heat exchange channels 11, and the driving air passes through the gaps between the ceramic balls to exchange heat between the air and the ceramic balls. Moreover, the stability of the ceramic balls is relatively high, and when the temperature changes, the ceramic balls will not undergo thermal decomposition, expansion and contraction and other changes and reactions, and have a long service life.
[0032] As Figure 1 shown, the heat exchanger 21 also has a second heat exchange pipe 212 that can exchange heat with the first heat exchange pipe 211. With the above structure, by providing the second heat exchange pipe 212, it is convenient to realize heat exchange between the first heat exchange pipe 211 by introducing high-temperature gas into the second heat exchange pipe 212, so as to realize heat storage of the heat storage member 14. It is convenient to realize heat exchange between the first heat exchange pipe 211 by introducing liquid water into the second heat exchange pipe 212, so as to realize heat release of the heat storage member 14.
[0033] As Figure 1 shown, the driving fan 22 includes a first blower 221, and the first blower 221 is arranged on the intake pipe 23. By providing the first blower 221, it can ensure that the gas in the first heat exchange pipe 211 of the heat exchanger 21 is blown into the heat exchange channels 11 by the first blower 221.
[0034] As Figure 1 shown, the driving fan 22 also includes a second blower 222, and the second blower 222 is arranged on the outlet pipe 24. By providing the second blower 222, it can ensure that the gas in the heat exchange channels 11 is blown into the first heat exchange pipe 211 of the heat exchanger 21 by the second blower 222.
[0035] As Figure 1As shown, a concrete thermal insulation layer 30 is provided on the outer side wall of the heat storage housing 10. The concrete thermal insulation layer 30 can play a role in insulating the gas inside the heat storage housing 10.
[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or their combinations.
[0037] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0038] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.
[0039] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made.
[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, these terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.
[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A heat storage device, characterized in that: The heat storage device comprises: A heat storage shell (10) having a heat exchange channel (11); a gas inlet (12) and a gas outlet (13) are provided on the heat storage shell (10); the gas inlet (12) and the gas outlet (13) are both connected to the heat exchange channel (11); and a heat storage element (14) is provided in the heat exchange channel (11); A heat exchange assembly (20) comprises a heat exchange element (21) and a driving fan (22), wherein the heat exchange element (21) has a first heat exchange pipeline (211), an air inlet pipe (23) and an air outlet pipe (24) are arranged between the heat exchange element (21) and the heat storage shell (10), a first end of the air inlet pipe (23) is connected to the air outlet of the first heat exchange pipeline (211), a second end of the air inlet pipe (23) is connected to the gas inlet (12), a first end of the air outlet pipe (24) is connected to the gas outlet (13), and a second end of the air outlet pipe (24) is connected to the air inlet of the first heat exchange pipeline (211), and the driving fan (22) is arranged on the air inlet pipe (23) to allow gas to circulate between the heat exchange channel (11) and the first heat exchange pipeline (211).
2. The heat storage device according to claim 1, characterized in that: A partition plate (15) is arranged inside the heat storage shell (10), and the partition plate (15) extends in a horizontal direction. One end of the partition plate (15) is connected to the inner wall of the heat storage shell (10), and a vent (16) is provided between the other end of the partition plate (15) and the inner wall of the heat storage shell (10). The partition plate (15) divides the inner cavity of the heat storage shell (10) into at least two heat exchange channels (11), and two adjacent heat exchange channels (11) are connected through the vent (16).
3. The heat storage device according to claim 2, characterized in that: A plurality of partition plates (15) are arranged in the heat storage shell (10); the plurality of partition plates (15) are arranged at intervals along the height direction of the heat storage shell (10); and two adjacent partition plates (15) are respectively connected to two opposite inner side walls of the heat storage shell (10).
4. The heat storage device according to claim 2, characterized in that: The ventilation opening (16) is provided with a blocking structure (17) for blocking the heat storage element (14).
5. The heat storage device according to claim 4, characterized in that: The blocking structure (17) comprises a metal mesh (171).
6. The heat storage device according to any one of claims 1 to 5, characterized in that: The heat storage element (14) comprises a plurality of ceramic balls, and the plurality of ceramic balls are all arranged in the heat exchange channel (11).
7. The heat storage device according to any one of claims 1 to 5, characterized in that: The heat exchange component (21) also has a second heat exchange pipeline (212) capable of exchanging heat with the first heat exchange pipeline (211).
8. The heat storage device according to claim 7, characterized in that: The driving fan (22) comprises a first blower (221), and the first blower (221) is arranged on the air intake pipe (23).
9. The heat storage device according to claim 7, characterized in that: The driving fan (22) further comprises a second blower (222), and the second blower (222) is arranged on the air outlet pipe (24).
10. The heat storage device according to any one of claims 1 to 5, characterized in that: A concrete insulation layer (30) is provided on the outer side wall of the heat storage shell (10).