A separable high-temperature heat storage device and its high-temperature heat storage system

Abstract

The present application provides a separable high-temperature heat storage device and its high-temperature heat storage system, which relates to high-temperature heat storage and includes a heat storage core body. A first reaction material pipeline and a second reaction material pipeline are respectively arranged in the heat storage core body; both ends of the first reaction material pipeline respectively have a fluid inlet and a fluid outlet. Through the design of the first reaction material pipeline and the second reaction material pipeline provided in the present application, when the heat fluid is transported in the first reaction material pipeline, the head-to-tail connection between multiple first reaction material pipe bodies is realized through the cooperation of the first bend connecting pipe and the second bend connecting pipe, so that the heat fluid can fully swim in multiple directions in the heat storage core body to drive the surrounding heat storage core body to fully absorb heat. At the same time, due to the assembly of multiple first reaction material pipe bodies, the flow path of the heat fluid can be lengthened, and the heat can be input through a single port and output through another port.

Description

Technical Field

[0001] The present invention relates to the field of high-temperature heat storage, and in particular, to a separated high-temperature heat storage device and its high-temperature heat storage system. Background Art

[0002] In China, the waste heat resources are very rich. There are a large number of intermittent and discontinuous high-temperature heat sources in industrial production. Such heat sources cannot continuously provide heat under intermittent working conditions, and it is more difficult to recover heat compared with continuous heat sources. Secondly, due to the small scale of single-point heat sources, it is difficult to recycle them. However, the cumulative calorific value of intermittent high-temperature heat sources in industrial production is much higher than that of continuous and easily recyclable heat sources. Therefore, the recovery of waste heat from intermittent high-temperature heat sources is beneficial to energy conservation and emission reduction and can increase economic benefits.

[0003] Thermal energy storage has three forms: sensible heat storage, latent heat storage, and thermochemical storage. The biggest disadvantage of sensible heat storage is its low heat storage density. Latent heat storage uses the latent heat of materials to store thermal energy. During the latent heat storage process, the temperature change is small, and the optional phase change temperature range is wide. However, the phase change material is prone to leakage, the device volume is large, and the heat transfer is slow. Thermochemical storage uses the endothermic / exothermic process of reversible reactions to store / absorb thermal energy. The direction of the reversible reaction depends on temperature and pressure. Thermochemical energy storage has a higher energy storage density, good reaction reversibility, fast charging / discharging speed, and small energy loss during long-term energy storage. The reaction temperature is high, which can meet the heat storage requirements of high-temperature heat sources.

[0004] For example, Chinese Patent CN 114963825 A discloses a high-temperature heat storage device, a heat storage method, and a heat release method. The high-temperature heat storage device includes a high-temperature fluid flow channel, a low-temperature fluid flow channel, a reaction fluid flow channel, and a thermochemical heat storage core. The high-temperature fluid flow channel, the low-temperature fluid flow channel, and the reaction fluid flow channel are vertically and staggeredly arranged in the thermochemical heat storage core, and the thermochemical heat storage material is filled in the internal flow channel gap of the thermochemical heat storage core; it is characterized in that: a micro-channel for allowing the reactant to contact and react with the thermochemical heat storage material and discharging the reaction product is provided at the contact surface between the reaction fluid flow channel and the thermochemical heat storage material. In the present invention, the flow channel cross-sectional areas of the high-temperature fluid flow channel, the low-temperature fluid flow channel, and the reaction fluid flow channel gradually increase from the middle to the periphery, which can make the fluid distribution between the middle and the periphery uniform and increase the heat exchange area, with high heat storage efficiency, meeting the requirements for waste heat recovery of intermittent high-temperature heat sources;

[0005] Although the above-mentioned high-temperature heat storage device can store and release thermal energy through chemical reactions, since it has multiple fluid channels and the multiple channels are arranged in a parallel form, during the process of fluid input and output, it cannot fully contact with the surrounding heat storage core to form a heat exchange effect. At the same time, due to the limited distance of each channel, when facing different heat storage situations, it may cause insufficient release of fluid thermal energy, resulting in waste of thermal energy. Therefore, we make improvements and propose a separated high-temperature heat storage device and its high-temperature heat storage system. Summary of the Invention

[0006] The purpose of the present invention is to provide a separated high-temperature heat storage device and its high-temperature heat storage system, which solves the problem of insufficient release of fluid thermal energy by setting a first return material pipeline and a second reaction material pipeline.

[0007] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0008] A separated high-temperature heat storage device and its high-temperature heat storage system, including a heat storage core, in which a first reaction material pipeline and a second reaction material pipeline are respectively arranged;

[0009] Both ends of the first reaction material pipeline respectively have a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are communicated with each other;

[0010] Both ends of the second reaction material pipeline respectively have a reaction fluid inlet and a reaction fluid outlet, and the reaction fluid inlet and the reaction fluid outlet are communicated with each other.

[0011] As a preferred technical solution of the present application, the first reaction material pipeline includes a plurality of first reaction material pipe bodies designed in parallel;

[0012] One end of two adjacent first reaction material pipe bodies located in the same plane is commonly connected with a first bending connecting pipe, and one end of two vertically corresponding first reaction material pipe bodies is commonly connected with a second bending connecting pipe.

[0013] As a preferred technical solution of the present application, the fluid inlet is located at the end of one of the first reaction material pipe bodies;

[0014] The fluid outlet is located at the end of one of the first bending connecting pipes;

[0015] The plurality of first reaction material pipe bodies, the first bending connecting pipes and the second bending connecting pipes are connected in sequence to form the first reaction material pipeline.

[0016] As a preferred technical solution of the present application, the second reaction material pipeline includes a plurality of second reaction material pipe bodies arranged in parallel;

[0017] The bottoms of two adjacent second reaction material pipe bodies are jointly connected with a third bent connecting pipe, and the plurality of second reaction material pipe bodies and the third bent connecting pipe are sequentially connected end to end to jointly form the second reaction material pipeline.

[0018] As a preferred technical solution of the present application, the reaction fluid inlet is arranged at one end of one of the third bent connecting pipes, and one end of the other third bent connecting pipe is further connected with a fourth bent connecting pipe;

[0019] Wherein, the reaction fluid outlet is arranged on the fourth bent connecting pipe.

[0020] As a preferred technical solution of the present application, the heat storage core has a first avoidance position corresponding to the position of the fluid inlet;

[0021] The heat storage core has a second avoidance position corresponding to the position of the fluid outlet;

[0022] The heat storage core has a third avoidance position corresponding to the position of the reaction fluid inlet;

[0023] The heat storage core has a fourth avoidance position corresponding to the position of the reaction fluid outlet.

[0024] As a preferred technical solution of the present application, first grooves are opened at the four corners of one side surface of the heat storage core, and second grooves are opened at the four corners of the other side surface of the heat storage core;

[0025] A threaded cylinder is fixed in the first groove, a threaded rod is movably arranged in the second groove, a rotating handle is fixed on the surface of the threaded rod, and rotating the threaded rod can tightly connect two heat storage cores.

[0026] As a preferred technical solution of the present application, pipeline connection components are provided on the surfaces of the first reaction material pipeline and the second reaction material pipeline.

[0027] As a preferred technical solution of the present application, the pipeline connection component is a pipeline sealing clamp.

[0028] A high-temperature heat storage system includes a separated high-temperature heat storage device as described above.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] In the solution of the present application:

[0031] 1. Through the design of the first reaction material pipeline and the second reaction material pipeline, when the hot fluid is transported in the first reaction material pipeline, the head-to-tail connection between multiple first reaction material pipe bodies is realized through the cooperation of the first bent connecting pipe and the second bent connecting pipe, enabling the hot fluid to swim in multiple directions in the heat storage core body, driving the surrounding heat storage core body to absorb heat sufficiently. At the same time, due to the assembly of multiple first reaction material pipe bodies, the flow path of the hot fluid can be lengthened, and the heat can be input through a single port and output through another port, further ensuring the full absorption of the heat energy of the hot fluid to improve the heat storage effect of the core body;

[0032] 2. Through the design of the second reaction material pipeline, when the low-temperature fluid is transported in the heat storage core body, the design of the third bent connecting pipe can also be used to enable the low-temperature fluid to fully contact the heat source in the heat storage core body, achieving a sufficient heat absorption effect;

[0033] 3. Through the cooperation of the pipeline connection components, the threaded rod and the threaded cylinder, multiple heat storage core bodies can be assembled, and the first reaction material pipeline and the second reaction material pipeline on them can be connected end to end, further extending the flow time of the hot fluid or the low-temperature fluid, enabling the heat storage core body to absorb and release heat sufficiently. At the same time, the assembled heat storage core bodies increase their own heat storage energy, and thus the energy of the heat flow can be stored fully according to different situations. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of a separated high-temperature heat storage device and its high-temperature heat storage system provided by the present application;

[0035] Figure 2 It is a partial schematic structural diagram of a separated high-temperature heat storage device and its high-temperature heat storage system provided by the present application;

[0036] Figure 3 It is a schematic structural diagram of the heat storage core body of a separated high-temperature heat storage device and its high-temperature heat storage system provided by the present application;

[0037] Figure 4 It is a schematic structural diagram of the first reaction material pipeline and the second reaction material pipeline of a separated high-temperature heat storage device and its high-temperature heat storage system provided by the present application;

[0038] Figure 5 It is a schematic structural diagram of the assembled first reaction material pipeline and the second reaction material pipeline of a separated high-temperature heat storage device and its high-temperature heat storage system provided by the present application;

[0039] Figure 6Schematic diagram of the first reaction material pipeline structure of a separated high-temperature heat storage device and its high-temperature heat storage system provided by this application;

[0040] Figure 7 Schematic diagram of the second reaction material pipe body structure of a separated high-temperature heat storage device and its high-temperature heat storage system provided by this application;

[0041] Figure 8 Schematic diagram of the second reaction material pipeline structure of a separated high-temperature heat storage device and its high-temperature heat storage system provided by this application;

[0042] Figure 9 Schematic diagram of the partial sectional structure of a separated high-temperature heat storage device and its high-temperature heat storage system provided by this application;

[0043] Figure 10 Schematic diagram of the pipeline connection component structure of a separated high-temperature heat storage device and its high-temperature heat storage system provided by this application.

[0044] Labels in the figure:

[0045] 1. Heat storage core; 2. First reaction material pipeline; 3. Second reaction material pipeline; 4. Pipeline connection component;

[0046] 11. First tank; 12. Second tank; 13. Threaded cylinder; 14. Threaded rod; 15. Rotating handle;

[0047] 21. Fluid inlet; 22. Fluid outlet; 23. First reaction material pipe body; 24. First bent connecting pipe; 25. Second bent connecting pipe; 26. First avoidance position; 27. Second avoidance position;

[0048] 31. Reaction fluid inlet; 32. Reaction fluid outlet; 33. Second reaction material pipe body; 34. Third bent connecting pipe; 35. Fourth bent connecting pipe; 36. Third avoidance position; 37. Fourth avoidance position. Detailed implementation manners

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0050] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0051] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0052] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0053] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0054] Embodiment 1

[0055] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a split-type high-temperature heat storage device and its high-temperature heat storage system, including a heat storage core 1, and a first reaction material pipeline 2 and a second reaction material pipeline 3 are respectively arranged in the heat storage core 1;

[0056] Both ends of the first reaction material pipeline 2 respectively have a fluid inlet 21 and a fluid outlet 22, and the fluid inlet 21 and the fluid outlet 22 are communicated with each other;

[0057] Both ends of the second reaction material pipeline 3 respectively have a reaction fluid inlet 31 and a reaction fluid outlet 32, and the reaction fluid inlet 31 and the reaction fluid outlet 32 are communicated with each other;

[0058] As Figure 6 shown, the first reaction material pipeline 2 includes a plurality of first reaction material pipe bodies 23 designed in parallel. One end of two adjacent first reaction material pipe bodies 23 in the same plane is commonly connected to a first bent connecting pipe 24, and one end of two vertically corresponding first reaction material pipe bodies 23 is commonly connected to a second bent connecting pipe 25. The fluid inlet 21 is located at the end of one of the first reaction material pipe bodies 23, and the fluid outlet 22 is located at the end of one of the first bent connecting pipes 24;

[0059] A plurality of the first reaction material pipe bodies 23, the first bent connecting pipe 24 and the second bent connecting pipe 25 are connected in sequence to form the first reaction material pipeline 2;

[0060] As Figure 7 and Figure 8 shown, the second reaction material pipeline 3 includes a plurality of second reaction material pipe bodies 33 arranged in parallel. The bottoms of two adjacent second reaction material pipe bodies 33 are commonly connected to a third bent connecting pipe 34. The plurality of second reaction material pipe bodies 33 and the third bent connecting pipe 34 are sequentially connected end to end to jointly form the second reaction material pipeline 3;

[0061] The reaction fluid inlet 31 is arranged at one end of one of the third bent connecting pipes 34. One end of the other third bent connecting pipe 34 is further connected to a fourth bent connecting pipe 35. Among them, the reaction fluid outlet 32 is arranged on the fourth bent connecting pipe 35;

[0062] The surface of the second reaction material pipeline 3 has honeycomb holes (not shown in the figure). The honeycomb holes are micro-channels that only allow the reactants of the heat storage material to be discharged;

[0063] In this embodiment, the material of the heat storage core 1 is Ca(OH)2, and its reaction temperature is 350-900 °C. In the actual application process, the hot fluid with high temperature is input into the interior of the first reaction material pipeline 2 through the fluid inlet 21. During this process, the hot fluid with high temperature will fully heat the flowing heat storage core 1. After heating, the heat of the high-temperature fluid is exchanged, and the heat of the heat storage core 1 rises to achieve heat exchange. The high-temperature fluid after heat exchange is discharged through the fluid outlet 22. During the process of heating the heat storage core 1 above, Ca(OH)2 is decomposed into CaO and H2O by heat. The reaction equation is Ca(OH)2 → CaO + H2O. The reaction product H2O is discharged into the interior of the second reaction material pipeline 3 through the honeycomb holes, and then dry air is conveyed through the reaction fluid inlet 31 on the second reaction material pipeline 3. When the conveyed dry air is conveyed inside the second reaction material pipeline 3, it will carry the water permeating into the pipeline interior, thereby cleaning the interior of the second reaction material pipeline 3 to achieve heat storage of the heat storage core 1;

[0064] When the hot fluid is conveyed inside the first reaction material pipeline 2, the cooperation of the first bent connecting pipe 24 and the second bent connecting pipe 25 realizes the end-to-end connection between the plurality of first reaction material pipe bodies 23, so that the hot fluid can fully swim in multiple directions inside the heat storage core 1 to drive the surrounding heat storage core 1 to fully absorb heat. At the same time, due to the assembly of the plurality of first reaction material pipe bodies 23, the flow stroke of the hot fluid can be lengthened, and the hot fluid can also be input through a single port and output through another port, further ensuring the full absorption of the thermal energy of the hot fluid to improve the heat storage effect of the core;

[0065] When it is necessary to release the heat inside the heat storage core 1, water (H2O) is input into the interior of the second reaction material pipeline 2 through the reaction fluid inlet 31 and finally discharged to the outside through the reaction fluid outlet 32. During this process, water will penetrate through the honeycomb holes to the outside of the second reaction material pipeline 2 and contact the heat storage core 1. H2O will then undergo an exothermic reaction with CaO, and the reaction equation is CaO + H2O → Ca(OH)2. At this time, a large amount of heat is released. Then, low-temperature fluid is simultaneously transported at the fluid inlet 21 on the first reaction material pipeline 2. During the transportation process, the low-temperature fluid can absorb the heat of the heat storage core 1, thereby realizing the utilization of thermal energy.

[0066] Through the design of the second reaction material pipeline 3, when the low-temperature fluid is transported inside the heat storage core 1, through the design of the third elbow joint 34, the low-temperature fluid can fully contact the heat source inside the heat storage core 1, achieving a sufficient heat absorption effect.

[0067] Embodiment 2

[0068] Please refer to Figures 1 to 10 The present invention provides a technical solution: a separated high-temperature heat storage device and its high-temperature heat storage system. At the position of the heat storage core 1 corresponding to the fluid inlet 21, there is a first avoidance position 26; at the position of the heat storage core 1 corresponding to the fluid outlet 22, there is a second avoidance position 27; at the position of the heat storage core 1 corresponding to the reaction fluid inlet 31, there is a third avoidance position 36; at the position of the heat storage core 1 corresponding to the reaction fluid outlet 32, there is a fourth avoidance position 37;

[0069] At the four corners of one side surface of the heat storage core 1, first grooves 11 are opened, and at the four corners of the other side surface of the heat storage core 1, second grooves 12 are opened;

[0070] A threaded cylinder 13 is fixed inside the first groove 11, and a threaded rod 14 is movably arranged inside the second groove 12. A rotating handle 15 is fixed on the surface of the threaded rod 14. Rotating the threaded rod 14 can tightly connect two heat storage cores 1;

[0071] The surfaces of the first reaction material pipeline 2 and the second reaction material pipeline 3 both have a pipeline connection component 4, and the pipeline connection component 4 is a pipeline sealing clamp;

[0072] According to actual usage requirements, multiple heat storage cores 1 can be appropriately connected through the pipeline connection component 4 for use. For example, when the temperature of the high-temperature fluid is too high and a single heat storage core 1 cannot effectively or quickly complete heat exchange for heat storage, multiple heat storage cores 1 can be spliced for use. The specific splicing steps are as follows;

[0073] Such asFigure 3 As shown, after the two heat storage cores 1 are arranged and aligned in the same direction, rotate the handle 15 on a certain heat storage core 1 to rotate the threaded rod 14 thereon. After forming a threaded fit with the threaded barrel 13, gradually move the two heat storage cores 1 closer until they are finally aligned;

[0074] When the two heat storage cores 1 are completely aligned, the fluid inlet 21 will be docked with the fluid outlet 22 on the adjacent heat storage core 1 to connect the two first reaction material pipelines 2. At this time, a high-temperature resistant sealing rubber ring can be sleeved at the connection of the two first reaction material pipelines 2, and then the sealing clamp is wound around the connection of the pipelines for fastening, thereby realizing the sealing and fastening of the connection of the two pipelines;

[0075] Meanwhile, the connection method for the reaction fluid inlet 31 and the reaction fluid outlet 32 is the same as above.

[0076] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although the present specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A split-type high-temperature heat storage device, characterized in that, It includes a heat storage core (1), and a first reaction material pipeline (2) and a second reaction material pipeline (3) are respectively arranged in the heat storage core (1); Both ends of the first reaction material pipeline (2) respectively have a fluid inlet (21) and a fluid outlet (22), and the fluid inlet (21) and the fluid outlet (22) are interconnected; Both ends of the second reaction material pipeline (3) respectively have a reaction fluid inlet (31) and a reaction fluid outlet (32), and the reaction fluid inlet (31) and the reaction fluid outlet (32) are interconnected; The first reaction material pipeline (2) includes a plurality of first reaction material pipe bodies (23) designed in parallel; One end of two adjacent first reaction material pipe bodies (23) located in the same plane is commonly connected with a first bent connecting pipe (24), and one end of two first reaction material pipe bodies (23) corresponding up and down is commonly connected with a second bent connecting pipe (25); The fluid inlet (21) is located at the end of one of the first reaction material pipe bodies (23); The fluid outlet (22) is located at the end of one of the first bent connecting pipes (24); A plurality of the first reaction material pipe bodies (23), the first bent connecting pipe (24) and the second bent connecting pipe (25) are connected in sequence head to tail to jointly form the first reaction material pipeline (2); The second reaction material pipeline (3) includes a plurality of second reaction material pipe bodies (33) arranged in parallel; The bottom ends of two adjacent second reaction material pipe bodies (33) are commonly connected with a third bent connecting pipe (34), and a plurality of the second reaction material pipe bodies (33) and the third bent connecting pipe (34) are connected in sequence head to tail to jointly form the second reaction material pipeline (3); The surface of the second reaction material pipeline (3) has honeycomb holes; The reaction fluid inlet (31) is arranged at one end of one of the third bent connecting pipes (34), and a fourth bent connecting pipe (35) is also connected to one end of the other third bent connecting pipe (34); Wherein, the reaction fluid outlet (32) is arranged on the fourth bent connecting pipe (35); The heat storage core (1) has a first avoidance position (26) at a position corresponding to the fluid inlet (21); The heat storage core (1) has a second avoidance position (27) at a position corresponding to the fluid outlet (22); The heat storage core (1) has a third avoidance position (36) at a position corresponding to the reaction fluid inlet (31); The heat storage core (1) has a fourth avoidance position (37) at a position corresponding to the adjacent reaction fluid outlet (32); First grooves (11) are opened at the four corners of one side surface of the heat storage core (1), and second grooves (12) are opened at the four corners of the other side surface of the heat storage core (1); A threaded cylinder (13) is fixed in the first groove (11), a threaded rod (14) is movably arranged in the second groove (12), a rotating handle (15) is fixed on the surface of the threaded rod (14), and rotating the threaded rod (14) can tightly connect two heat storage cores (1).

2. The separable high-temperature heat storage device according to claim 1, characterized in that, The surfaces of the first reaction material pipeline (2) and the second reaction material pipeline (3) are both provided with pipeline connection components (4).

3. The separated high-temperature heat storage device according to claim 2, wherein, The pipeline connection component (4) is a pipeline sealing clamp.

4. A high-temperature heat storage system, comprising a separated high-temperature heat storage device according to any one of claims 1-3.

Images