CN221991749U - A heat exchanger and a high-temperature phase-change heat energy storage device - Google Patents
A heat exchanger and a high-temperature phase-change heat energy storage device Download PDFInfo
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- CN221991749U CN221991749U CN202323432520.3U CN202323432520U CN221991749U CN 221991749 U CN221991749 U CN 221991749U CN 202323432520 U CN202323432520 U CN 202323432520U CN 221991749 U CN221991749 U CN 221991749U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/14—Thermal energy storage
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Abstract
The utility model relates to the technical field of phase change heat energy storage, in particular to a heat exchanger and a high-temperature phase change heat energy storage device, which comprises a box body, wherein the box body is provided with an opening, A plurality of rows of heat exchange tubes are arranged in the box body, the inlet end and the outlet end of each row of heat exchange tubes are respectively communicated with a collecting pipe, and the collecting pipes are communicated into a collecting main pipe. The utility model provides a heat exchanger and a high-temperature phase-change heat energy storage device, which adopt an umbrella-shaped welding method for heat exchange tubes, the quantity of the heat exchange tubes arranged in a limited heat exchange space is more, the concentrated arrangement of the heat exchange tubes is realized, the heat exchange area is increased by about 30% compared with the conventional arrangement mode of the heat exchange tubes, and the heat exchange efficiency of the design is obviously improved due to the fact that the welding process is more complicated but the heat exchange tubes with the same size and quantity are arranged.
Description
Technical Field
The utility model relates to the technical field of phase change heat energy storage, in particular to a heat exchanger and a high-temperature phase change heat energy storage device.
Background
The phase-change energy-storage heat-storage technology can solve the contradiction that energy supply and demand are not matched in time and space, and is an effective means for improving the utilization rate of renewable energy sources. The phase-change energy-storage heat-storage technology can effectively utilize the characteristics that the phase-change material absorbs or releases a large amount of latent heat and keeps the temperature constant during phase change, and the energy stored by the phase-change latent heat is much larger than the sensible heat of solid or liquid, so that the phase-change energy-storage heat-storage technology can be widely applied to the fields of electric power peak regulation, heat-storage heating, industrial heat energy recycling, new energy storage, heat storage and the like.
The heat energy storage is suitable for heating, photo-thermal power generation and industrial field heating due to the characteristics of high energy storage density and relatively low cost, the existing heat energy storage technology in the market at present mainly comprises a solid heat storage technology and a low-temperature phase change technology, the low-temperature phase change heat storage technology is mainly applied to the photo-thermal power generation field, and the application of a power system consumption end is difficult; the solid heat storage has the defects of low energy storage density, poor heat energy output stability and the like, and is used for heating under specific conditions.
The high-temperature phase-change heat energy storage technology fully utilizes the characteristics of high melting point and large sensible heat and latent heat of the high-temperature phase-change material, greatly improves the heat storage density and application temperature of the heat storage material, greatly reduces the equipment investment cost, and can be widely applied to the field of heat demand below industrial 400 ℃ due to the modularized design, thereby having revolutionary strategic significance.
The existing heat-conducting medium heating equipment in the market is mainly divided into electric heating (heat-conducting medium mould temperature machine) and gas heating, and as the electric power occupies higher and higher proportion in the energy structure, the heat-conducting medium mould temperature machine is more convenient to apply, so most enterprises adopt the mould temperature machine to heat the heat-conducting medium; the mold temperature machine has the advantages of convenient application, less investment, high operation cost, easy coking of heat conducting medium and the like.
Therefore, whether to provide a heat-conducting medium heat exchange device based on the high-temperature phase-change heat energy storage technology becomes a technical problem to be solved urgently by the person skilled in the art.
Disclosure of utility model
In order to realize the 'consumption reduction and synergy' of heat energy demand end users in the industrial field, reduce the energy consumption cost and increase the market competitiveness of enterprise products, the utility model provides a heat exchanger and a high-temperature phase-change heat energy storage device, which adopt an umbrella-shaped welding method for heat exchange pipes, the quantity of the heat exchange pipes distributed in a limited heat exchange space is more, the heat exchange tubes are arranged in a concentrated mode, the heat exchange area is increased by about 30% compared with the conventional arrangement mode of the heat exchange tubes, and the heat exchange efficiency of the design is obviously improved although the welding process is more complex. The utility model provides the following technical scheme:
The heat exchanger comprises a box body, wherein the box body is provided with an opening, a plurality of rows of heat exchange tubes are arranged in the box body, the inlet end and the outlet end of each row of heat exchange tubes are respectively communicated with a collecting pipe, and the collecting pipes are communicated into a collecting main.
Further, every three rows of heat exchange tubes in the heat exchange tubes are respectively communicated into the collecting tube from the two sides and the middle part of the tube wall of the collecting tube.
Further, the heat exchange tubes communicated into the middle position of the collecting tube are arranged in the middle position of the heat exchange tubes communicated into the two sides of the wall of the collecting tube.
Further, the opening comprises a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are positioned on two opposite faces of the box body in a staggered mode.
Further, the outer surface of the heat exchange tube is provided with metal radiating fins.
The high-temperature phase-change heat energy storage device comprises a heat storage box and the heat exchanger, wherein a vent of the heat storage box is communicated with an opening of the heat exchanger, so that a high-temperature medium in the heat storage box is conveyed into the heat exchanger.
Further, the vent comprises an air inlet and an air outlet, the opening comprises a fluid inlet and a fluid outlet, the air outlet is communicated with the fluid inlet, and the fluid outlet is communicated with the air inlet through a circulating fan.
Further, the whole flow direction of the heat conducting medium in the heat exchange tube is opposite to the flow direction of the high-temperature medium in the box body.
One or more technical schemes provided by the utility model have at least the following technical effects or advantages:
1. In the heat exchanger and the high-temperature phase-change heat energy storage device, the umbrella-shaped welding method is adopted for the heat exchange tubes, so that the quantity of the heat exchange tubes distributed in a limited heat exchange space is large, the concentrated arrangement of the heat exchange tubes is realized, the heat exchange area is increased by about 30% compared with the conventional arrangement mode of the heat exchange tubes, and the heat exchange efficiency of the design is obviously improved due to the fact that the welding process is more complicated but the heat exchange tubes with the same size and quantity are arranged.
2. In the high-temperature phase-change heat energy storage device, a plurality of heat exchange tubes are simultaneously communicated with each collecting pipe, the arrangement of the structure ensures that the heat exchange tubes in the shape of straight tubes and the heat exchange tubes with bent parts have different flow rates of heat conducting media, the heat exchange tubes in the same row form vortex at the collecting position in the collecting pipe from which the heat conducting media flows out, so that the coking degree of the heat conducting media at the bent parts of the collecting pipes is reduced, and the service life of the heat exchanger can be prolonged.
3. The structural design of the high-temperature phase-change heat energy storage device can greatly improve the heat storage temperature and the heat storage density, develop high-power energy storage in the industrial field of consumer terminals and promote peak clipping and valley filling of an electric power system. The method has the advantages of reducing consumption and enhancing efficiency for heat energy demand end users in the wide industrial fields, reducing energy consumption cost and increasing market competitiveness of enterprise products.
Drawings
FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present application;
FIG. 2 is a front view of a heat exchanger according to an embodiment of the present application;
FIG. 3 is a top view of the heat exchanger of FIG. 2 according to the present application;
FIG. 4 is a side view of the heat exchanger of FIG. 2 according to the present application;
FIG. 5 is a schematic diagram of a high temperature phase change thermal energy storage device according to an embodiment of the present application;
FIG. 6 is a side view of the high temperature phase change thermal energy storage device of FIG. 5 according to the present application;
FIG. 7 is a transverse sectional view of a thermal storage tank according to an embodiment of the present application;
Fig. 8 is a front view of the heat storage tank according to the embodiment of the present application.
The reference numerals water as follows: 1-a box body; 2-fluid inlet; 3-fluid outlet; 4-heat exchange tubes; 5-header; 6-collecting main pipe; 7-metal radiating fins; 8-a heat storage box; 9-air inlet; 10-an air outlet; 11-a circulating fan; 12-a heat storage box body; 13-a heat accumulator; 14-a housing; 15-an electric heating unit; 16-strip-shaped fluid channels; 17-an electric heating unit access port; 18-an insulating layer.
Detailed Description
In order to better understand the above technical solutions, the following description will refer to the drawings and specific embodiments.
Example 1:
The heat exchanger comprises a box body 1, wherein the box body 1 is provided with an opening, a plurality of rows of heat exchange tubes 4 are arranged in the box body 1, the inlet end and the outlet end of each row of heat exchange tubes 4 are respectively communicated with a collecting pipe 5, and the collecting pipes 5 are communicated into a collecting pipe 6. The header pipe 6 is provided with pipe openings for feeding or discharging a heat transfer medium. Further, every three rows of heat exchange tubes 4 in the heat exchange tubes 4 are respectively communicated into the collecting tube 5 from two sides and the middle of the tube wall of the collecting tube 5. Further, the heat exchange tubes 4 connected to the middle position of the header 5 are arranged at the middle position of the heat exchange tubes 4 connected to the two sides of the tube wall of the header 5. The heat exchange tubes 4 communicated into the middle of the header 5 are straight tubes, and bending parts bent towards the straight tubes are formed at the end parts of the heat exchange tubes 4 communicated into the two sides of the tube wall of the header 5. And the heat exchange tubes 4 positioned in the middle of the collecting pipe 5 are staggered with the heat exchange tubes 4 positioned at two sides of the wall of the collecting pipe 5. The number of the heat exchange tubes 4 arranged in the limited heat exchange space is more, the heat exchange tubes 4 are arranged in a concentrated mode, the heat exchange area is increased by about 30% compared with the conventional arrangement mode of the heat exchange tubes 4, and the heat exchange efficiency of the design is obviously improved due to the fact that the welding process is more complicated but the heat exchange tubes 4 are of the same size and number. Three rows of heat exchange tubes 4 are arranged between every two rows of oppositely arranged collecting tubes 5, and the number of the heat exchange tubes 4 in each row and the number of the collecting tubes 5 can be conventionally selected based on the volume of the heat exchanger and the heat exchange body quantity.
Further, the opening comprises a fluid inlet 2 and a fluid outlet 3, and the fluid inlet 2 and the fluid outlet 3 are positioned on two opposite surfaces of the box body 1 and are staggered. Further, the outer surface of the heat exchange tube 4 is provided with metal heat radiation fins 7.
Example 2:
The high-temperature phase-change heat energy storage device comprises a heat storage box 8 and the heat exchanger in the embodiment, wherein a vent hole of the heat storage box 8 is communicated with an opening of the heat exchanger so as to enable high-temperature medium in the heat storage box 8 to be conveyed into the heat exchanger, as shown in fig. 5 and 6. The vent comprises an air inlet 9 and an air outlet 10, the opening comprises a fluid inlet 2 and a fluid outlet 3, the air outlet 10 is communicated with the fluid inlet 2, and the fluid outlet 3 is communicated with the air inlet 9 through a circulating fan 11. The fluid inlet 2 and the fluid outlet 3 are arranged on two opposite surfaces of the box body 1, and the fluid inlet 2 and the fluid outlet 3 are arranged in a staggered manner. The overall flow direction of the heat conducting medium in the heat exchange tube 4 is opposite to the flow direction of the high-temperature medium in the box body 1, so that the heat exchange efficiency is further increased.
Example 3:
The utility model provides a heat accumulation box, as shown in fig. 7 and 8, includes heat accumulation box 12, be provided with the air vent on the heat accumulation box 12, be provided with heat accumulator 13 in the heat accumulation box 12, be provided with a plurality of electric heating unit 15 in the heat accumulation box 12, heat accumulator 13 is including being rectangular form casing 14, the casing 14 intussuseption is filled with phase change heat accumulation material. The specific phase change heat storage material is selected from one or more of ：LiNO3·3H2O、Na2SO4·10H2O、Na2CO3·10H2O、Na2HPO4·10H2O、Na2S2O3·5H2O、Na(CH3COO)·3H2O、Na2P2O4·10H5O、50％Na(CH3COO)·3H2O+50％HCONH2、Ba(OH)21*8H2O、C16-C28 paraffin, C20-C33 paraffin, C20-C45 paraffin, C21-C50 paraffin, lauric acid, myristic acid, palmitic acid and stearic acid. The whole heat accumulator 13 is in a long strip shape, and can be in a long strip structure such as a cuboid, a cube and a polyhedron. Further preferably, the heat accumulator 13 is rectangular parallelepiped. The plurality of heat storage bodies 13 are arranged in the first direction to divide the space in the heat storage tank 12 into the strip-shaped fluid passages 16. The plurality of heat storage bodies 13 arranged in the first direction may be arranged in 1 row or in a plurality of rows. If a plurality of rows of the heat storage bodies are arranged along the first direction, then a plurality of rows of the heat storage bodies 13 arranged along the first direction are arranged along the second direction, and further preferably, each row of the heat storage bodies 13 along the first direction is arranged end to end along the second direction, and further preferably, the first direction is perpendicular to the second direction. The number of heat storage bodies 13 per row may be selected conventionally based on the heat storage tank energy storage requirements, as well as the volume size of the heat storage tank.
As shown in fig. 7, a plurality of electric heating units 15 are disposed in the strip-shaped fluid passage 16. Further preferably, the electric heating units 15 are arranged in a linear arrangement in the strip-shaped fluid channel 16. The number of heat storages 13 may be 2 to 100, the number of electric heating units 15 may be 2 to 100, and the person skilled in the art may choose based on the heat storage tank heat storage requirement and the volume size of the heat storage tank 8, without any inventive effort. As shown in fig. 8, an electric heating unit access hole 17 is provided at a position opposite to the heating unit at the top of the heat storage tank 12. The number of the electric heating unit access holes 17 can be multiple, and the number and arrangement positions of the electric heating units 15 correspond to each other. Replacement and maintenance of the electric heating unit 15 is facilitated.
Further, the air vent comprises an air inlet 9 and an air outlet 10, the air inlet 9 is positioned on the side edge of the heat storage box 12, and the air outlet 10 is positioned on the top of the heat storage box 12. Further, the two heat storages 13 arranged in the first direction and located at the outermost side and far from the air inlet 9 are connected in an extending manner at the same direction end, and the two heat storages 13 form a U-shaped structure. Still further preferably, the air inlet 9 is disposed opposite to an end of one or a row of heat storages 13 disposed at a start end of the queue of the heat storages 13 in the first direction, and the air outlet 10 is disposed opposite to an end of another or another row of heat storages 13 disposed at an end of the queue of the heat storages 13 in the first direction. That is, the air outlet 10 is located near the side where the air inlet 9 is located, so that the air flowing into the air inlet 9 flows into the strip-shaped fluid channels 16 arranged along the first direction and located at one side of the row of heat storages 13 at the beginning end, the heat conducting medium entering the strip-shaped fluid channels 16 forms an air channel arranged in an M shape or a U shape, and finally flows out from the strip-shaped fluid channels 16 arranged along the first direction and located at the other side of the row of heat storages 13 at the end of the row of heat storages 13 and flows out through the air outlet 10.
Further preferably, the heat storage tank 12 includes a heat insulation layer 18 and a housing sequentially from inside to outside. Wherein the heat insulating layer 18 may be a multi-layer structure, and more preferably, a two-layer structure, that is, the heat insulating layer includes a high temperature heat insulating layer and a medium and low temperature heat insulating layer. Wherein, a layer of high temperature heat insulation board is stuck in the high temperature heat insulation layer, and the inner side is coated with high temperature anti-radiation material to insulate the temperature of 1000 ℃ in the cavity to below 700 ℃.
A power supply method of the high-temperature phase-change thermal energy storage device according to the embodiment comprises the following steps: in the electricity valley period, the electric heating unit 15 is controlled to be started, and the heat energy provided by the electric heating unit 15 enables the heat accumulator 13 to accumulate heat energy, so that the heat accumulation temperature in the heat accumulation box and the phase-change heat accumulation material reaches 1000-1200 ℃; in the electricity consumption peak period, the heat energy stored by the heat accumulator 13 in the heat accumulation box is introduced into the heat exchanger in the form of hot air to heat the heat medium in the heat exchanger. And the heating medium heated by the hot air is conveyed to an application end through a pipeline. And the gas subjected to heat exchange in the heat exchanger is conveyed back into the heat storage box. The gas which is conveyed back flows through a plurality of M-type or N-type fluid air passages formed between the heat accumulators 13 and then becomes hot air to be conveyed to the heat exchanger. The heating medium is any one of water, heat conducting oil, steam and air flow. The heat exchanger can be selected based on a heating medium to be heated, if the heating medium is steam, the heat exchanger can be a steam generator, and if the heating medium is heat conduction oil, the heat exchanger can be a heat conduction oil heat exchanger.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323432520.3U CN221991749U (en) | 2023-12-16 | 2023-12-16 | A heat exchanger and a high-temperature phase-change heat energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323432520.3U CN221991749U (en) | 2023-12-16 | 2023-12-16 | A heat exchanger and a high-temperature phase-change heat energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221991749U true CN221991749U (en) | 2024-11-12 |
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ID=93340459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323432520.3U Active CN221991749U (en) | 2023-12-16 | 2023-12-16 | A heat exchanger and a high-temperature phase-change heat energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221991749U (en) |
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2023
- 2023-12-16 CN CN202323432520.3U patent/CN221991749U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20250430 Address after: 250000 room b609, 6th floor, Ginza Jiayue Hotel, 23377 Jingshi Road, Huaiyin District, Jinan City, Shandong Province Patentee after: Shandong Licheng Energy Technology Co.,Ltd. Country or region after: China Address before: Unit 705, West Unit 27-1, Guzhai East Road, Huancui District, Qingdao City, Shandong Province 264200 Patentee before: Li Zhongqin Country or region before: China |
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| TR01 | Transfer of patent right | ||
| CU01 | Correction of utility model |
Correction item: Patentee|Country or Region|Address Correct: Li Zhongqin|China|Unit 705, West Unit 27-1, Guzhai East Road, Huancui District, Qingdao City, Shandong Province 264200 False: Shandong Licheng Energy Technology Co.,Ltd.|China|250000 room b609, 6th floor, Ginza Jiayue Hotel, 23377 Jingshi Road, Huaiyin District, Jinan City, Shandong Province Number: 20-02 Volume: 41 |
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| CU01 | Correction of utility model | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20250429 Granted publication date: 20241112 |
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| PP01 | Preservation of patent right |