CN204460763U - Adopt the tower type solar solar-thermal generating system of fused salt working medium - Google Patents
Adopt the tower type solar solar-thermal generating system of fused salt working medium Download PDFInfo
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- CN204460763U CN204460763U CN201420872605.5U CN201420872605U CN204460763U CN 204460763 U CN204460763 U CN 204460763U CN 201420872605 U CN201420872605 U CN 201420872605U CN 204460763 U CN204460763 U CN 204460763U
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- 150000003839 salts Chemical class 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 12
- 238000010248 power generation Methods 0.000 claims description 50
- 238000005338 heat storage Methods 0.000 claims description 31
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The utility model relates to the tower type solar solar-thermal generating system adopting fused salt working medium, comprise: for collecting the solar energy heat collector of solar thermal energy, being connected with solar energy heat collector, for generation of the heat exchanger of overheated saturated vapor, and being connected with heat exchanger, for overheated saturated vapor being converted to the heat power conversion equipment of electric energy; Solar energy heat collector comprises multiple tower photo-thermal module; Multiple tower photo-thermal module comprises the tower photo-thermal module of category-B adopting fused salt as the distributed heat accumulation of band of hot working fluid.Use and adopt the category-B tower photo-thermal module of fused salt as hot working fluid and with distributed heat accumulation can greatly improve power station generating efficiency, improve energy utilization rate; By employing, there is modularized solar energy collecting device and can simplify power plant construction flow process, reduce the completion time of project, more can reduce Power Plant Design cost of investment.
Description
Technical Field
The utility model relates to an electric power tech field, more specifically say, relate to tower solar photothermal power system who adopts fused salt working medium.
Background
The tower type solar photo-thermal power generation system has the advantages and the characteristics of wide temperature field and energy field matching setting, large light condensation ratio, high focusing temperature, large energy flux density, high thermal conversion efficiency, wide application range and the like, and can be used in a large scale: the solar energy utilization development such as photo-thermal power generation, water hydrogen production, seawater desalination, metal smelting and the like. Therefore, the tower-type solar photo-thermal power generation system is a solar diversified utilization platform with great value potential.
Many developed countries have developed the technical research of tower solar power generation. However, the development of this technology has been hampered by a number of reasons, mainly two: firstly, the tracking cost of the heliostat is too high, because the precision requirement of remote tracking is extremely high, the gear gapless transmission is required to be achieved, and the caused harsh manufacture is the reason for increasing the tracking cost; and secondly, the power generation scale is too small, the power generation capacity expansion is greatly limited, the tower power generation scale depends on the heliostat field scale, the larger the photothermal power generation scale is, the larger the cost reduction space is, but after the heliostat field scale is enlarged to a certain degree, the overall efficiency of the heliostat field shows a sharp reduction and reduction trend. Therefore, the power generation cost of the current tower type solar power generation system is high, and a large distance is still left from the market requirement.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a tower solar photothermal power system of adoption fused salt working medium of sustainable, stable, high-efficient electricity generation.
The utility model provides a technical scheme that its technical problem adopted is:
a tower type solar photo-thermal power generation system adopting a molten salt working medium is constructed, and comprises: the solar heat collector is used for collecting solar heat energy, the heat exchanger is connected with the solar heat collector and used for generating superheated saturated steam, and the thermal power conversion device is connected with the heat exchanger and used for converting the superheated saturated steam into electric energy; the solar heat collection device comprises a plurality of tower type photo-thermal modules for collecting solar heat; the tower-type photothermal modules comprise a B-type tower-type photothermal module which adopts molten salt as a hot working medium and has distributed heat storage function, wherein,
each B-type tower type photo-thermal module comprises a second heliostat used for focusing sunlight, a second photo-thermal tower provided with a second heat collector, and a distributed heat storage unit connected with the second photo-thermal tower and used for storing heat of a heated working medium in the second heat collector.
Solar photothermal power system, wherein, the heat exchanger includes a plurality of sub heat exchangers, every B class tower light and heat module contains one sub heat exchanger.
Solar photothermal power generation system, wherein, every B class tower-type light and heat module sub-heat exchanger jointly through a high temperature steam heat-retaining device that is used for storing supersaturated hot steam with thermal power conversion device connects.
Solar photothermal power generation system, wherein, a plurality of tower light and heat module is whole to be B class tower light and heat module, has two at least B class tower light and heat module series connection, or has two at least B class tower light and heat module series connection.
Solar photothermal power generation system, wherein, a plurality of tower light and heat module is whole to be B class tower light and heat module, whole B class tower light and heat module series connection.
The solar photo-thermal power generation system of the utility model, wherein, a plurality of tower photo-thermal modules also comprise a class A tower photo-thermal module which adopts fused salt as a thermal working medium; wherein,
the A-type tower type photo-thermal module comprises a first heliostat for focusing sunlight and a first photo-thermal tower provided with a first heat collector;
and the A-type tower type photo-thermal modules are connected with the heat exchanger through a centralized heat storage unit for storing the heat energy of the heated hot working medium in the first heat collector.
Solar photothermal power system, wherein, A class tower-type light and heat module with establish ties or parallel connection between B class tower-type light and heat module.
Solar photothermal power generation system, wherein, singly tower photothermal module generated power is 10-25 MW.
The beneficial effects of the utility model reside in that: the B-type tower type photo-thermal module which adopts the molten salt as the thermal working medium and has distributed heat storage can greatly improve the power generation efficiency of the power station and improve the energy utilization rate; the modular solar heat collection device is adopted, so that the construction process of the power station can be simplified, the construction period is shortened, the design investment cost of the power station can be reduced, when one single tower goes wrong, the working state of other tower type photo-thermal modules can not be influenced, and the continuity and the stability of the power supply of the whole power generation system are ensured.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of a tower solar photo-thermal power generation system using a molten salt working medium and comprising a B-type tower photo-thermal module according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a single B-tower photothermal module according to a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a tower-type solar photo-thermal power generation system using molten salt working medium, which includes both the A-type tower-type photo-thermal module and the B-type tower-type photo-thermal module according to a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of a tower-type solar photo-thermal power generation system using molten salt working medium, which includes both the A-type tower-type photo-thermal module and the B-type tower-type photo-thermal module according to the preferred embodiment of the present invention;
fig. 5 is a schematic diagram of a single class a tower photothermal module according to a preferred embodiment of the present invention.
Detailed Description
The utility model discloses the tower solar photothermal power system principle of adopting molten salt working medium of preferred embodiment is shown in figure 1, include: a solar heat collection device for collecting solar heat energy, a heat exchanger connected to the solar heat collection device for producing superheated saturated steam, and a thermal power conversion device 24 connected to the heat exchanger for converting the superheated saturated steam into electrical energy; the solar heat collection device comprises a plurality of tower type photo-thermal modules 11 and 12 for collecting solar heat; the plurality of tower photothermal modules 11, 12 include: and the B-type tower type photo-thermal module 12 adopts molten salt as a thermal working medium and has distributed heat storage. Each B-type tower-type photothermal module 12 includes a second heliostat 121 for focusing sunlight, a second photothermal tower 122 provided with a second heat collector, and a distributed heat storage unit 124 connected to the second photothermal tower 122 for storing heat energy of a heated thermal medium in the second heat collector. The B-type tower type photo-thermal module 12 which adopts molten salt as a thermal working medium and has distributed heat storage can greatly improve the generating efficiency of the power station and the energy utilization rate. Moreover, by adopting the solar photo-thermal power generation system with the modularized solar heat collection device (hereinafter referred to as the solar photo-thermal power generation system), when a large photo-thermal power station is rebuilt, only the tower type photo-thermal module needs to be copied, so that the construction process can be simplified, the construction period can be shortened, and the design investment cost of the power generation system can be reduced.
Meanwhile, the power supply stability of the whole power generation system can be improved by adopting the solar photo-thermal power generation system. If the photo-thermal power station of single tower, no matter which part goes wrong, whole power generation system's stability can all receive the influence, after adopting modularization solar photo-thermal power generation system, single tower goes wrong can not influence the operating condition of other modules, has guaranteed the continuation and the stability of whole power generation system power supply. In addition, by adopting the solar photo-thermal power generation system, the efficiency of a heliostat field can be improved. If the solar photo-thermal power generation system is a large-scale single-tower photo-thermal power generation system, the distance between the far-end mirror field and the tower top is very far, the efficiency is very low, and after the solar photo-thermal power generation system is adopted, the distance between the mirror field and the tower top can be reduced, the efficiency of the mirror field is improved, and the area and the investment of the mirror field are reduced.
In the above embodiment, the thermal power conversion device 24 of the solar photo-thermal power generation system is preferably a steam turbine generator unit, and the specific model is not limited.
Preferably, in the above embodiment, as shown in fig. 1 and fig. 2, each class B tower-type photothermal module 12 is connected to one sub heat exchanger 123, and the sub heat exchangers 123 of each class B tower-type photothermal module 12 are connected to the thermal power conversion device 24 through one common high-temperature steam heat storage device 13, so as to store the supersaturated hot steam generated by each sub heat exchanger 123 and deliver the supersaturated hot steam to the thermal power conversion device 24 for power generation.
As shown in fig. 1 and 2, the above-mentioned B-type tower-type photothermal module 12 has the following working procedures: the second heliostat 121 reflects sunlight, focuses the sunlight and heats the hot working medium in the second heat collector on the top of the second photo-thermal tower 122, and a part of the heated hot working medium stores heat through the distributed heat storage unit 124, and the other part generates superheated saturated steam through the heat exchanger 123 to drive the thermal power conversion device 24 to generate electricity.
Preferably, as shown in fig. 2, in the above embodiment, a low-temperature steam heat storage device 125 is connected between the sub heat exchanger 123 of each class B tower-type photothermal module 12 and the second photothermal tower 122, and the hot working medium after heat exchange by the sub heat exchanger 123 is pumped to the top of the second photothermal tower 122 for heating, so as to be recycled, thereby improving energy utilization rate.
In the above embodiment, the high-temperature steam heat storage device 13 of the solar photo-thermal power generation system includes one heat storage tank, or consists of a plurality of heat storage tanks.
In a further embodiment, as shown in fig. 3, 4 and 5, the plurality of tower-type photothermal modules 11 and 12 constituting the solar heat collecting device in the solar photo-thermal power generation system further include: a class a tower photo-thermal module 11. Each class a tower-type photothermal module 11 includes a first heliostat 111 for focusing sunlight and a first photothermal tower 112 provided with a first heat collector; the A-type tower type photo-thermal modules 11 are connected with the heat exchanger through a centralized heat storage unit 113 for storing the heat energy of the heated hot working medium in the first heat collector.
Referring to fig. 5, the operation flow of the class a tower-type photothermal module 11 is as follows: the first sun mirror 111 reflects sunlight, focuses the sunlight and heats the hot working medium in the first heat collector on the top of the first photothermal tower 112, the heat energy of the heated hot working medium in the first heat collectors of all the class-A tower type photothermal and thermal modules 11 is stored in the common centralized heat storage unit 113, and the stored heat energy generates superheated saturated steam through the heat exchanger to drive the thermal power conversion device 24 to generate electricity.
Preferably, as shown in fig. 5, a low-temperature steam heat storage device 23 is further connected between the heat exchanger and the first photo-thermal tower 112 of the class a tower-type photo-thermal module 11, and the hot working medium after heat exchange by the heat exchanger is pumped to the top of the first photo-thermal tower 112 for heating, so as to be recycled.
That is, the class a tower-type photothermal module 11 is a photothermal module not separately provided with a heat storage unit, and realizes centralized heat storage only by using one centralized heat storage unit 113; the class B tower thermal module 12 is a single thermal module with a distributed thermal storage unit 124.
In a specific embodiment, as shown in fig. 1, the solar heat collection device of the solar photo-thermal power generation system is composed of a B-type tower photo-thermal module 12. Among them, a part of the superheated saturated steam generated by all the B-type tower photo-thermal modules 12 is stored in the distributed heat storage unit, and the other part is stored in the high-temperature steam heat storage device of the solar photo-thermal power generation system, so as to drive the thermal power conversion device 24 (turbo generator unit) to generate power. Although the construction cost of the whole solar photo-thermal power generation system is increased by adopting all the B-type tower photo-thermal modules 12 compared with the a-type tower photo-thermal modules 11, the utilization rate of the superheated saturated steam generated by each tower photo-thermal module can be increased, so that the power generation efficiency of the whole solar photo-thermal power generation system can be improved.
Further, in the above embodiment, the class B tower type photothermal module 12 preferably employs molten salt as the thermal working medium of the heat collector and the distributed heat storage unit. When all the class B tower-type photothermal and thermal modules 12 in the solar photothermal power generation system adopt molten salt as a thermal medium, at least two of the class B tower-type photothermal and thermal modules 12 are connected in series (or in parallel). Or all the B-type tower type photothermal modules are connected in series (or in parallel).
In another embodiment, as shown in fig. 3 and 4, and referring to fig. 1, 5 and 2, the solar heat collecting device of the solar photo-thermal power generation system includes both the class a tower photo-thermal module 11 and the class B tower photo-thermal module 12. The working process of the single a-type tower photothermal module 11 and the single B-type tower photothermal module 12 refers to the description of the previous embodiment, and is not described herein again.
Further, in the above embodiment, all the class a tower-type photothermal modules 11 use molten salt as the thermal medium, all the class B tower-type photothermal modules 12 use molten salt as the thermal medium, and the class a tower-type photothermal module 11 and the class B tower-type photothermal module 12 are connected in series or in parallel.
In another preferred embodiment, the modular solar power generation system comprises 20 tower type photo-thermal modules, and the power generation power of each tower type photo-thermal module is 10 MW; the solar heat collector comprises 10A-type tower type photo-thermal modules 11 and 10B-type tower type photo-thermal modules 12, wherein the heat storage time of the 10B-type tower type photo-thermal modules 12 with heat storage is 8 hours, 10A-type tower type photo-thermal modules without heat storage generate electricity through superheated steam, and the concentrated heat storage time is 2 hours.
In the above embodiments, the power generated by the single tower type photo-thermal module may be 5-100MW, preferably 10-25MW, to achieve the optimal power generation effect, but is not limited to tower type photo-thermal modules with other powers.
In summary, the utility model adopts the fused salt as the thermal working medium and the B-type tower type photo-thermal module with distributed heat storage, which can greatly improve the generating efficiency of the power station and the energy utilization rate; the modular solar heat collection device is adopted, so that the construction process of the power station can be simplified, the construction period is shortened, the design investment cost of the power station can be reduced, when one single tower goes wrong, the working state of other tower type photo-thermal modules can not be influenced, and the continuity and the stability of the power supply of the whole power generation system are ensured.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (8)
1. A tower type solar photo-thermal power generation system adopting a molten salt working medium comprises: the solar heat collector is used for collecting solar heat energy, the heat exchanger is connected with the solar heat collector and used for generating superheated saturated steam, and the thermal power conversion device is connected with the heat exchanger and used for converting the superheated saturated steam into electric energy; the solar heat collection device is characterized by comprising a plurality of tower type photo-thermal modules for collecting solar heat; the tower-type photothermal modules comprise a B-type tower-type photothermal module which adopts molten salt as a hot working medium and has distributed heat storage function, wherein,
each B-type tower type photo-thermal module comprises a second heliostat used for focusing sunlight, a second photo-thermal tower provided with a second heat collector, and a distributed heat storage unit connected with the second photo-thermal tower and used for storing heat of a heated working medium in the second heat collector.
2. The solar photothermal power system of claim 1 wherein said heat exchanger comprises a plurality of sub-heat exchangers, each of said class B tower photothermal modules comprising one of said sub-heat exchangers.
3. The solar photothermal power system according to claim 2 wherein said sub heat exchangers of each of said class B tower-type photothermal modules are connected to said thermal power conversion device together through a high temperature vapor heat storage device for storing supersaturated thermal vapor.
4. The solar photothermal power system according to any one of claims 1 to 3 wherein all of said tower photothermal modules are B-type tower photothermal modules, at least two of said B-type tower photothermal modules are connected in series, or at least two of said B-type tower photothermal modules are connected in series.
5. The solar photothermal power system according to any one of claims 1 to 3 wherein all of said tower photothermal modules are class B tower photothermal modules, all of said class B tower photothermal modules being connected in series.
6. The solar photothermal power system according to any one of claims 1 to 3 wherein said plurality of tower photothermal modules further comprises a class A tower photothermal module using molten salt as a thermal medium; wherein,
the A-type tower type photo-thermal module comprises a first heliostat for focusing sunlight and a first photo-thermal tower provided with a first heat collector;
and the A-type tower type photo-thermal modules are connected with the heat exchanger through a centralized heat storage unit for storing the heat energy of the heated hot working medium in the first heat collector.
7. The solar photothermal power system according to claim 6 wherein said class A tower photothermal module and said class B tower photothermal module are connected in series or in parallel.
8. The solar photothermal power system of claim 1 wherein the power generated by a single tower photothermal module is 10-25 MW.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420872605.5U CN204460763U (en) | 2014-12-31 | 2014-12-31 | Adopt the tower type solar solar-thermal generating system of fused salt working medium |
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| CN201420872605.5U CN204460763U (en) | 2014-12-31 | 2014-12-31 | Adopt the tower type solar solar-thermal generating system of fused salt working medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444428A (en) * | 2014-12-31 | 2016-03-30 | 深圳永清爱能森新能源工程技术有限公司 | Tower-type solar photo-thermal power generation system adopting fused salt working medium |
| CN105698146A (en) * | 2016-03-24 | 2016-06-22 | 王顺滔 | Solar steam boiler |
| CN109739280A (en) * | 2019-01-08 | 2019-05-10 | 北京首航艾启威节能技术股份有限公司 | A kind of Novel electric tracing control system and method |
| CN112963973A (en) * | 2021-03-22 | 2021-06-15 | 蒙映峰 | Construction method of photo-thermal power station |
-
2014
- 2014-12-31 CN CN201420872605.5U patent/CN204460763U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444428A (en) * | 2014-12-31 | 2016-03-30 | 深圳永清爱能森新能源工程技术有限公司 | Tower-type solar photo-thermal power generation system adopting fused salt working medium |
| CN105444428B (en) * | 2014-12-31 | 2020-01-03 | 深圳永清爱能森新能源工程技术有限公司 | Tower type solar photo-thermal power generation system adopting molten salt working medium |
| CN105698146A (en) * | 2016-03-24 | 2016-06-22 | 王顺滔 | Solar steam boiler |
| CN109739280A (en) * | 2019-01-08 | 2019-05-10 | 北京首航艾启威节能技术股份有限公司 | A kind of Novel electric tracing control system and method |
| CN112963973A (en) * | 2021-03-22 | 2021-06-15 | 蒙映峰 | Construction method of photo-thermal power station |
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Effective date of registration: 20230605 Address after: Room 1901, building 2, Hualing international building, 722 Beiyi Road, Dongying District, Dongying City, Shandong Province 257000 Patentee after: Shandong ainengsen New Material Technology Co.,Ltd. Address before: Room 811, incubation building, China Academy of science and technology, 009 Gaoxin South 1st Road, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN ENESOON SCIENCE & TECHNOLOGY Co.,Ltd. |