CN213273901U - Solid particle heat storage system - Google Patents
Solid particle heat storage system Download PDFInfo
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- CN213273901U CN213273901U CN202021406033.3U CN202021406033U CN213273901U CN 213273901 U CN213273901 U CN 213273901U CN 202021406033 U CN202021406033 U CN 202021406033U CN 213273901 U CN213273901 U CN 213273901U
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Abstract
The utility model relates to a solid particle heat accumulation system, including high temperature feed bin and the circulating fan who is used for holding solid particle, high temperature feed bin is connected with heating device, high temperature feed bin bottom is connected with the feeder, the exit end of feeder is connected with heat transfer separator, heat transfer separator includes the multistage heat exchanger of mutual fluid intercommunication, and heat exchangers at different levels are equipped with cyclone, heat transfer separator's top is equipped with the circulated air export, and the bottom is equipped with solid phase export and circulated air entry respectively, circulated air entry and circulated air export all with circulating fan fluid intercommunication, the circulated air export still is connected with the gas-gas heat exchanger, the solid phase export with high temperature feed bin communicates each other. The utility model discloses can effectively separate the solid particle of heat accumulation and carry the wind, have high-efficient heat conversion efficiency.
Description
Technical Field
The utility model relates to a solid heat accumulation energy storage field especially relates to a solid particle heat storage system.
Background
Energy is the core power of economic development, and with the rapid development of economy and the increasingly prominent shortage of energy, obvious incompatibility of energy appears in the aspects of supply, allocation and the like. Green energy is a long-term trend of energy development, and mainly comprises solar energy, wind energy, tidal energy and the like, and has the advantages of environmental protection and inexhaustibility. However, the green energy is generally affected by external factors, and is difficult to output to the power which is required to be matched with the power grid, so that the current serious problems of wind abandonment, light abandonment and the like are caused.
Therefore, great attention is paid to the development of new energy and the improvement of the utilization rate of energy. The energy storage technology is a technology which uses energy storage materials to efficiently store solar energy heat energy, industrial waste heat and low-quality energy and can greatly improve the energy utilization rate of the whole system.
In recent years, the industry of 'coal to electricity' in China is greatly developed, a plurality of novel electric heating equipment are produced at the same time, and valley electricity heat storage heating becomes the mainstream form of the electric heating equipment. The solid electric heat storage technology is superior to the valley electric heat storage mode, and is generally applied to the fields of regional heating transformation, power plant depth peak regulation, heat for industrial production and the like. However, the disadvantages of solid electric heat storage are: the heat accumulator is relatively heavy, the cost of heat extraction is relatively high, the stability of high and low temperature heat release circulation is poor, and the type selection of the heating wire (or belt or pipe) is difficult.
CN 107655357 a discloses a low-cost solid particle heat storage device and method. The heat is input to the heat exchange surface of the furnace wall through the heat source, the cold solid heat storage particles stored in the cold bin are sent into the furnace wall for heat exchange, the fan uniformly distributes air through the air chamber and sends the air into the furnace wall, so that the solid heat storage particles are in a fluidized state in the furnace wall, the heat transfer is enhanced, the solid heat storage particles are separated by the separator after absorbing heat and then enter the hot bin for storage, and the heat storage process is completed; when heat is needed, the thermal solid heat storage particles in the hot bin enter the heat exchanger to release heat to meet the requirement. However, the solid heat storage particles and the air supply of the solid particle heat storage device have poor separation effect, and the energy utilization rate needs to be improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a solid particle heat accumulation system, the utility model discloses can effectively separate the solid particle of heat accumulation and carry the wind, have high-efficient heat conversion efficiency.
The utility model discloses a solid particle heat storage system, which comprises a high-temperature bin for containing solid particles and a circulating fan, wherein the high-temperature bin is connected with a heating device, the heating device is used for transmitting heat for the solid particles, the circulating fan is used for generating air conveying and driving the solid particles in the system to move in a fluidized state, the bottom of the high-temperature bin is connected with a feeder, the outlet end of the feeder is connected with a heat exchange separation device, the heat exchange separation device comprises multi-stage heat exchangers which are mutually communicated in a fluid manner, each stage of heat exchanger is provided with a cyclone separator, the air conveying and the hot solid particles in the heat exchange separation device complete one-time heat exchange to generate hot air and separate the hot air from the solid particles, the top of the heat exchange separation device is provided with a circulating air outlet, the bottom of the heat exchange separation device is respectively provided with a solid phase outlet and a circulating air, the hot air generated after the primary heat exchange enters the gas-gas heat exchanger through the circulating air outlet, secondary heat exchange is completed in the gas-gas heat exchanger and is used by a user end, the solid phase outlet is communicated with the high-temperature bin, and the solid particles separated in the heat exchange separation device enter the high-temperature bin again through the solid phase outlet to continue to be filled with heat.
Preferably, the outlet end of the feeder is connected with the heat exchange separation device through a connecting pipe; the multistage heat exchanger has three stages, namely a first-stage heat exchanger, a second-stage heat exchanger and a third-stage heat exchanger which are sequentially arranged from top to bottom; the connecting pipe is arranged along the vertical direction, the upper end of the connecting pipe is connected to the top of the primary heat exchanger, and the lower end of the connecting pipe is connected to the top of the secondary heat exchanger; the top of the primary heat exchanger is provided with a circulating air outlet pipe, and the bottom of the primary heat exchanger is provided with a first solid phase outlet pipe; the circulating air outlet is arranged on the circulating air outlet pipe; the top of the secondary heat exchanger is also provided with a second gas-phase outlet pipe, and the bottom of the secondary heat exchanger is provided with a second solid-phase outlet pipe; the outlet end of the first solid phase outlet pipe is in fluid communication with the second gas phase outlet pipe, and the outlet end of the second gas phase outlet pipe is connected to the top of the third-level heat exchanger; the top of the three-level heat exchanger is provided with a circulating air inlet pipe, the bottom of the three-level heat exchanger is provided with a solid phase outlet pipe, the outlet end of the second solid phase outlet pipe is communicated with the circulating air inlet pipe in a fluid mode, the circulating air inlet is arranged on the circulating air inlet pipe, and the solid phase outlet is arranged on the solid phase outlet pipe.
Further, a material lifting device is arranged between the solid phase outlet and the high-temperature bin. The material lifting device can conveniently convey solid particles into the high-temperature bin, so that the recycling of the solid particles is completed.
Further, the heating device comprises at least one electric heating wire, and the electric heating wire is positioned in the high-temperature storage bin. When the heating device is an electric heating wire, solid particles can be heated by heat generated by electric heating of wave troughs and the like.
Further, the electric heating wire extends along the height direction of the high-temperature bin.
Further, heating device includes the thermal-collecting tube, and the thermal-collecting tube is around locating high temperature feed bin outside. When the heating device is a heat collecting pipe, the industrial waste heat can be utilized to heat the solid particles.
Further, heating device includes solar heating plate, and solar heating plate locates the high temperature feed bin outside. The heating device can heat the solid particles by utilizing solar energy photo-heat.
Further, the gas-gas heat exchanger is positioned between the circulating air outlet and the circulating fan.
Further, the feeder is a screw feeder.
Further, the high-temperature storage bin is provided with a heat preservation unit. Heat loss can be prevented and efficient heat utilization can be achieved.
Furthermore, the upper part of the high-temperature bin is provided with a feed inlet for solid particles to enter.
Further, the solid particles may be made of a material having a high specific heat (magnesium oxide, calcium oxide, etc.), or may be made of inexpensive sand, slag, ceramic particles, or the like.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:
the utility model discloses a set up circulating fan, circulating fan is at the uniform velocity promoted solid particle and is moved in the system, guarantees simultaneously that solid particle is in the flow state in the system. The air conveying and supplying generated by the circulating fan completes primary heat exchange with the solid particles in a thermal state in the heat exchange and separation device to generate hot air and separate the hot air from the solid particles, the hot air enters the gas-gas heat exchanger through the circulating air outlet, and secondary heat exchange is completed in the gas-gas heat exchanger for a user to use.
The utility model discloses a setting has multistage heat exchanger and cyclone's heat transfer separator realizes high-efficient heat transfer and effectively separates gas and solid particle. The heat conversion efficiency of the system is higher compared to conventional solid state thermal storage devices.
The utility model discloses do not have the pressure level requirement to the container, equipment drops into lower in earlier stage. The utility model has low requirements on solid particles for heat storage, wide raw material sources and low price. The utility model discloses a specific type of heating device can be adjusted according to actual conditions, the different heat sources of make full use of, the flexibility that improves energy utilization that can be better.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a solid particle heat storage system of the present invention;
description of reference numerals:
1-a heating device; 2-high temperature storage bin; 3-a feeder; 4-a heat exchange separation device; 5-gas heat exchanger; 6-circulating fan; 7-a material extractor; 40-primary heat exchanger; 41-secondary heat exchanger; 42-a tertiary heat exchanger; 400-connecting pipe; 401-circulating air outlet pipe; 402-a first solid phase outlet tube; 410-a second gas phase outlet pipe; 411-a second solid phase outlet tube; 420-a circulating air inlet pipe; 421-solid phase outlet tube.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1
The utility model provides an utilize solid particle heat accumulation system of solar photothermal heat source, is including high temperature feed bin 2 and circulating fan 6 that are used for holding solid particle, and the upper portion of high temperature feed bin 2 is equipped with the feed inlet that supplies solid particle to get into. The solid particles can be made of high specific heat (magnesium oxide, calcium oxide and the like) materials, or cheap sand, slag, ceramic particles and the like. The high-temperature bin 2 is connected with a heating device 1, and solid particles entering the high-temperature bin 2 are heated by the heating device 1 to finish heat filling. The circulating fan 6 is used for generating air conveying and driving solid particles in the system to move in a fluidized state. Heating device 1 includes the solar energy hot plate, and the solar energy hot plate is located 2 outsides of high temperature feed bin. The heating device 1 can heat solid particles by utilizing solar energy photo-heat.
The bottom of the high-temperature bunker 2 is conical, and the bottom of the high-temperature bunker is connected with a feeder 3, and preferably, the feeder 3 is a screw feeder. In order to prevent heat loss and improve heat utilization efficiency, the high-temperature bunker 2 is provided with a heat preservation unit. The outlet end of the feeder 3 is connected with a heat exchange separation device 4, and the solid particles which are filled with heat in the high-temperature bin 2 are conveyed into the heat exchange separation device 4 by the feeder 3.
The heat exchange and separation device 4 comprises multi-stage heat exchangers which are in fluid communication with each other, each stage of heat exchanger is provided with a cyclone separator, the air is conveyed in the heat exchange and separation device 4 to generate hot air after primary heat exchange with solid particles in a thermal state, the hot air is separated from the solid particles, the top of the heat exchange and separation device 4 is provided with a circulating air outlet, the bottom of the heat exchange and separation device is provided with a solid phase outlet and a circulating air inlet, and the circulating air inlet and the circulating air outlet are both in fluid communication with the circulating fan 6. Under the action of the circulating fan 6, the generated conveying wind flows from the bottom to the top of the heat exchange separation device 4, and the blowing power of the conveying wind to the solid particles is smaller than that of the cyclone separator, so that the solid particles can finally flow out through the solid phase outlet.
Specifically, the outlet end of the feeder 3 is connected to the heat exchange separation device 4 through a connection pipe 400. The multistage heat exchanger has three stages, namely a first-stage heat exchanger 40, a second-stage heat exchanger 41 and a third-stage heat exchanger 42 which are sequentially arranged from top to bottom. The connection pipe 400 is disposed in a vertical direction, an upper end of the connection pipe 400 is connected to the top of the primary heat exchanger 40, and a lower end of the connection pipe 400 is connected to the top of the secondary heat exchanger 41. The top of the primary heat exchanger 40 is provided with a circulating air outlet pipe 401, and the bottom is provided with a first solid phase outlet pipe 402. The circulating air outlet is provided on the circulating air outlet pipe 401. The second heat exchanger 41 is also provided with a second gas phase outlet pipe 410 at the top and a second solid phase outlet pipe 411 at the bottom. The outlet end of the first solid phase outlet pipe 402 is in fluid communication with a second gas phase outlet pipe 410, the outlet end of the second gas phase outlet pipe 410 being connected to the top of the tertiary heat exchanger 42. The top of the third-level heat exchanger 42 is provided with a circulating air inlet pipe 420, the bottom is provided with a solid phase outlet pipe 421, the outlet end of the second solid phase outlet pipe 411 is in fluid communication with the circulating air inlet pipe 420, the circulating air inlet is arranged on the circulating air inlet pipe 420, and the solid phase outlet is arranged on the solid phase outlet pipe 421.
The circulating air outlet is also connected with an air-air heat exchanger 5, hot air generated after primary heat exchange enters the air-air heat exchanger 5 through the circulating air outlet, and secondary heat exchange is completed in the air-air heat exchanger 5 for a user to use. One end of the gas-gas heat exchanger 5 is connected with a circulating air outlet, and the other end is connected with a circulating fan 6.
The solid phase outlet is communicated with the high-temperature bin 2, and the solid particles separated in the heat exchange separation device 4 enter the high-temperature bin 2 again through the solid phase outlet to continue to be heated. A material lifting device 7 is arranged between the solid phase outlet and the high temperature bin 2. The material lifting device 7 can conveniently convey solid particles into the high-temperature bin 2, so that the recycling of the solid particles is completed.
Use the utility model discloses in the time, carry solid particle to high temperature feed bin 2 in, heating device 1 converts solar light into heat, carries out the heat accumulation to solid particle, and solid particle after the heating is by feeder 3 in connecting pipe 400 input heat transfer separator 4, and solid particle carries out multistage separation in heat transfer separator 4, and circulating fan 6 is arranged in producing the air delivery and drives the solid particle in the system and is the fluidization motion. The air conveying and supplying generated by the circulating fan 6 completes primary heat exchange with the solid particles in a thermal state in the heat exchange and separation device 4 to generate hot air and separate the hot air from the solid particles, the hot air outputs clean heat for a user end after heat exchange through the air-gas heat exchanger 5, and the solid particles separated in the heat exchange and separation device 4 return to the high-temperature bin 2 for heat charging again under the action of the material lifting device 7; all the gas is circulating air and runs in the system at a constant speed, and the solid particles run in the system in a fluidized state. In fig. 1, the solid arrows indicate the solid particle flow path, and the solid arrows indicate the gas flow path.
Example 2
The utility model provides an utilize solid particle heat accumulation system of trough electric heat source, its structure is similar with embodiment 1's structure, and the difference lies in, heating device 1 includes many electric heating wire, and electric heating wire is located high temperature feed bin 2. Each electric heating wire extends in the height direction of the high-temperature bunker 2.
Example 3
The utility model provides an utilize solid particle heat storage system of industry waste heat source, its structure is similar with embodiment 1's structure, and the difference lies in, heating device 1 includes the thermal-collecting tube, and the thermal-collecting tube is around locating 2 outsides in high temperature feed bin.
The specific embodiments described in the present invention are only examples of the spirit of the present invention, and only examples of solar photo-thermal, power grid trough and industrial waste heat as heat sources are listed, but those skilled in the art will understand that the present invention is also applicable to heat storage systems with multiple temperature ranges such as wind power, geothermal, boiler, etc., and can determine suitable solid heat storage particles according to actual needs.
Adopt the utility model discloses, solid heat accumulation granule temperature heat filling temperature can exceed 800 ℃, and thermal conversion efficiency can reach more than 90% in addition, compares with current system and has obvious advantage. The system is simple to operate, reliable in operation and wide in application prospect.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A solid particle heat storage system is characterized in that: including high temperature feed bin and the circulating fan that is used for holding solid particle, high temperature feed bin is connected with heating device, high temperature feed bin bottom is connected with the feeder, the exit end of feeder is connected with heat transfer separator, heat transfer separator includes the multistage heat exchanger of mutual fluid intercommunication, and heat exchangers at different levels are equipped with cyclone, heat transfer separator's top is equipped with the circulated air export, and the bottom is equipped with solid phase export and circulated air entry respectively, circulated air entry and circulated air export all with circulating fan fluid intercommunication, the circulated air export still is connected with the gas-gas heat exchanger, the solid phase export with high temperature feed bin communicates each other.
2. The solid particulate heat thermal storage system of claim 1, wherein: a material lifting device is arranged between the solid phase outlet and the high-temperature bin.
3. The solid particulate heat thermal storage system of claim 1, wherein: the heating device comprises at least one electric heating wire, and the electric heating wire is positioned in the high-temperature storage bin.
4. The solid particulate heat thermal storage system of claim 3, wherein: the electric heating wire extends along the height direction of the high-temperature bin.
5. The solid particulate heat thermal storage system of claim 1, wherein: the heating device comprises a heat collecting pipe, and the heat collecting pipe is wound outside the high-temperature storage bin.
6. The solid particulate heat thermal storage system of claim 1, wherein: the heating device comprises a solar heating plate, and the solar heating plate is arranged outside the high-temperature storage bin.
7. The solid particulate heat thermal storage system of claim 1, wherein: the gas-gas heat exchanger is positioned between the circulating air outlet and the circulating fan.
8. The solid particulate heat thermal storage system of claim 1, wherein: the feeder is a screw feeder.
9. The solid particulate heat thermal storage system of claim 1, wherein: the high-temperature storage bin is provided with a heat preservation unit.
10. The solid particulate heat thermal storage system of claim 1, wherein: and a feed inlet for solid particles to enter is formed in the upper part of the high-temperature bin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021406033.3U CN213273901U (en) | 2020-07-16 | 2020-07-16 | Solid particle heat storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021406033.3U CN213273901U (en) | 2020-07-16 | 2020-07-16 | Solid particle heat storage system |
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| CN213273901U true CN213273901U (en) | 2021-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686188A (en) * | 2021-08-23 | 2021-11-23 | 中科南京绿色制造产业创新研究院 | Long-distance mobile energy storage system of heat storage rod and operation method thereof |
| CN113720188A (en) * | 2021-08-30 | 2021-11-30 | 中国科学院过程工程研究所 | Short-distance heat storage and transmission system with heat storage balls and operation method thereof |
-
2020
- 2020-07-16 CN CN202021406033.3U patent/CN213273901U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686188A (en) * | 2021-08-23 | 2021-11-23 | 中科南京绿色制造产业创新研究院 | Long-distance mobile energy storage system of heat storage rod and operation method thereof |
| CN113686188B (en) * | 2021-08-23 | 2023-11-17 | 中科南京绿色制造产业创新研究院 | Heat storage rod long-distance mobile energy storage system and operation method thereof |
| CN113720188A (en) * | 2021-08-30 | 2021-11-30 | 中国科学院过程工程研究所 | Short-distance heat storage and transmission system with heat storage balls and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Qineng Qixin New Energy Technology Co.,Ltd. Assignor: Borzman new energy technology (Shanghai) Co.,Ltd. Contract record no.: X2023980038998 Denomination of utility model: A Solid Particle Heat Storage System Granted publication date: 20210525 License type: Exclusive License Record date: 20230803 |
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| EE01 | Entry into force of recordation of patent licensing contract |