CN213775617U - Tower type solar high-low temperature mixed heat absorption power generation system - Google Patents
Tower type solar high-low temperature mixed heat absorption power generation system Download PDFInfo
- Publication number
- CN213775617U CN213775617U CN202022751537.5U CN202022751537U CN213775617U CN 213775617 U CN213775617 U CN 213775617U CN 202022751537 U CN202022751537 U CN 202022751537U CN 213775617 U CN213775617 U CN 213775617U
- Authority
- CN
- China
- Prior art keywords
- heat absorber
- heater
- low temperature
- temperature
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 38
- 238000010248 power generation Methods 0.000 title claims abstract description 30
- 239000006096 absorbing agent Substances 0.000 claims abstract description 136
- 150000003839 salts Chemical class 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 118
- 230000001172 regenerating effect Effects 0.000 claims description 65
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 238000000605 extraction Methods 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 230000008676 import Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000008236 heating water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model relates to a mixed heat absorption power generation system of tower solar energy high-low temperature, this system include high temperature fused salt heat absorber, go up low temperature heat absorber, lower low temperature heat absorber, backheat heater, feedwater heater, governing valve, low temperature heat absorber, go up the hot side series connection of low temperature heat absorber and feedwater heater down, feedwater heater's cold side and backheat the heater parallelly connected, high temperature fused salt heat absorber arranges under between low temperature heat absorber and the last low temperature heat absorber, the low temperature heat absorber constitutes the low temperature heat absorber with last low temperature heat absorber down, this system utilizes "flash" and "abandon light" of low temperature heat absorber absorption day ambient field spotlight in the tower system, heating rankine cycle's feedwater reduces and is used for backheating heater heating feedwater required steam turbine steam extraction volume to improve turbine steam power generation, improve system's efficiency, reduce the power generation cost.
Description
Technical Field
The utility model relates to a solar thermal energy utilization especially relates to a tower solar energy high low temperature mixes heat absorption power generation system.
Background
With the huge consumption of traditional fossil energy, people face increasingly severe energy and environmental problems. A new energy technology revolution is to start with the improvement of energy utilization efficiency and the optimization of energy consumption structure. The improvement of the proportion of non-fossil energy, particularly the proportion of renewable energy, has important significance for future energy and environment. At present, the renewable energy accounts for only about 12 percent, and the renewable energy is already regarded as the strategic high point of the new generation energy technology. Renewable energy sources include water energy, wind energy, solar energy, biomass energy, geothermal energy, ocean energy, and the like. The solar energy is widely distributed, safe and clean, has huge total amount, is inexhaustible, is widely concerned, and is an important component in renewable energy.
The principle of solar thermal power generation is that an absorber absorbs sunlight to serve as a high-temperature heat source, a hot working medium absorbs heat, the heat enters the next step of power circulation to generate mechanical energy, and a generator set is driven to generate power, and common forms of the solar thermal power generation include a disc type system, a groove type system, a tower type system and the like. The solar photo-thermal power generation can combine low-cost energy storage, has stable output, can bear basic load, is quickly adjusted, can be used as a peak regulation power supply, can further improve the internet consumption capability of other unstable renewable energy sources, and has huge future development prospect.
At present, a tower type thermal power generation system mainly adopts fused salt as a heat absorption medium and a heat storage medium, the fused salt heat absorber is mostly exposed, and the outer wall surface of the fused salt heat absorber is a light condensation receiving surface and an atmosphere interface. The heat flux density of the molten salt heat absorber is directly related to the arrangement mode, control and the like of the heliostat field of the tower system. Because the heliostat is far away from the heat absorber on the top of the heat collection tower, certain errors exist in the position of the focusing light spot. The fused salt heat absorber surface temperature is high and temperature distribution is inhomogeneous, for the spotlight that prevents the heat absorber both ends and spill over has thermal-insulated protector, generally adopts white temperature resistant thermal insulation material in both sides about the fused salt heat absorber. Therefore, the part of the overflowed condensed light energy is not absorbed and utilized, and the 'overflowed light' loss is caused. The loss of the 'light overflow' can reach about 10%. Meanwhile, in order to reduce overflow loss as much as possible, the light-gathering energy flow on the heat absorber must be concentrated, and local overtemperature is more easily caused.
When cloud shielding occurs, the solar radiation energy received by the fused salt heat absorber is reduced sharply, and at the moment, the heat absorber can dissipate heat outwards all the time, so that the wall temperature of the heat absorber is reduced sharply, and the fused salt working medium in the heat absorber can be solidified seriously, thereby causing fatal damage to the heat absorber.
In conclusion, the molten salt heat absorber has a severe working environment, high temperature, large temperature gradient and sensitive thermal stress; when the device is normally operated, the device is started and stopped at least once every day, and the thermal fatigue influence is serious. In order to ensure that the fused salt heat absorber can be timely regulated and controlled when the solar radiation changes, a certain margin is reserved for the design of the number of the heliostats. When the solar energy is sufficient, the condensing focus of part of the heliostat is not projected on the fused salt heat absorber, but is near the fused salt heat absorber to be ready for operation at any time. When the temperature of the molten salt heat absorber is too high, withdrawing a part of the molten salt heat absorber for heliostat condensation as a preparation; when the temperature of the heat absorber is reduced, a prepared heliostat is put into the system, so that the temperature of the heat absorber is stable. The prepared heliostat concentrates light to cause light abandon loss which can reach more than 10%.
In conclusion, the total loss of the 'light overflow' and the 'light abandon' can reach more than 20 percent, thereby causing huge loss, reducing the efficiency and greatly improving the system cost.
Disclosure of Invention
The utility model discloses the loss of tower solar molten salt power generation system's above needle overflow light "and" abandon light ", provided a mixed heat absorption power generation system of tower solar energy high low temperature, will" overflow light "and" abandon light "and adopt the low temperature heat absorber to absorb to advance steam rankine cycle power generation system with the heat coupling that absorbs, thereby reduce the loss, improve output, can improve system efficiency ten percent point. The utility model discloses a concrete scheme as follows:
a tower type solar high-low temperature mixed heat absorption power generation system comprises a high-temperature molten salt heat absorber, a low-temperature heat absorber and a water supply heater, and is characterized in that an outlet of a hot side of the water supply heater is connected with an inlet of the low-temperature heat absorber, an outlet of the low-temperature heat absorber is connected with an inlet of the water supply heater, namely the hot side of the water supply heater is connected with the low-temperature heat absorber in series; the low temperature heat absorber divide into low temperature heat absorber and lower low temperature heat absorber, it is located to go up the low temperature heat absorber high temperature fused salt heat absorber upper end, lower low temperature heat absorber is located high temperature fused salt heat absorber lower extreme, promptly the high temperature fused salt heat absorber is located the centre of low temperature heat absorber and lower low temperature heat absorber.
The high-temperature molten salt heat absorber absorbs the main part of heliostat field condensation in the tower system to generate high-temperature molten salt. The upper low-temperature heat absorber and the lower low-temperature heat absorber absorb ' light overflow ' of the heliostats of the tower system at two ends of the molten salt heat absorber, waste light ' of the heliostats in a ready state can be projected on the low-temperature heat absorber, the low-temperature heat absorbing medium enters an inlet of the low-temperature heat absorber and is heated by the ' light overflow ' and the ' waste light ', and the heated low-temperature heat absorbing medium enters the water supply heater and is used for heating water in a steam Rankine cycle. The low-temperature heat absorption working medium of the low-temperature heat absorber is any one of water, heat conduction oil and low-temperature molten salt.
The upper low-temperature heat absorber and the lower low-temperature heat absorber are connected in parallel or in series. The series connection mode is that the low-temperature heat absorption working medium sequentially passes through the lower low-temperature heat absorber and then passes through the upper low-temperature heat absorber or the low-temperature heat absorption working medium sequentially passes through the upper low-temperature heat absorber and then passes through the lower low-temperature heat absorber. The parallel connection mode is that the low-temperature heat absorption working medium is divided into two paths which respectively pass through the upper low-temperature heat absorber and the lower low-temperature heat absorber, and the low-temperature heat absorption working medium is respectively taken out and then is combined into one path. Further, the upper low-temperature heat absorber and the lower low-temperature heat absorber are respectively divided into at least two parts, and each part is connected in series or in parallel.
Furthermore, the system also comprises a regenerative heater and a regulating valve, wherein the inlet of the regulating valve is connected with the feed water inlet of the regenerative heater, the outlet of the regulating valve is connected with the cold side inlet of the feed water heater, and the cold side outlet of the feed water heater is connected with the feed water outlet of the regenerative heater, namely, the regenerative heater is connected with the feed water heater in parallel. And distributing the water supply quantity entering the regenerative heater and the water supply heater by adjusting the opening of the adjusting valve. When the solar light is sufficient, the heat absorbed by the low-temperature heat absorber is increased, and the regulating valve is regulated, so that the water supply quantity entering the water supply heater is increased, and the water supply quantity entering the regenerative heater is reduced. Because the water supply quantity entering the regenerative heater is reduced, the high-temperature steam extraction quantity required by the regenerative heater and coming out of the steam turbine is reduced, and the work power of the steam turbine is improved. When no sunlight exists, the regulating valve is closed, so that all the supplied water enters the regenerative heater, and the power generation flow is consistent with the traditional power generation flow.
Compared with the mode that the regenerative heater and the feedwater heater are connected in parallel, the regenerative heater and the feedwater heater can also adopt a series mode. Because of the precedence relationship between the regenerative heater and the feedwater heater, two connection modes exist: the feed water outlet of the regenerative heater is connected with the cold side inlet of the feed water heater, namely, the feed water firstly passes through the regenerative heater and then passes through the feed water heater; or the outlet of the cold side of the feed water heater is connected with the feed water inlet of the regenerative heater, namely, the feed water firstly passes through the feed water heater and then passes through the regenerative heater.
The regenerative heaters are at least 2 stages of regenerative heaters, and the regenerative heaters are connected in series. The multistage regenerative heater can reasonably utilize steam extracted from the steam turbine, and improve the work-doing capacity of the steam turbine while ensuring the heating effect.
The system further comprises a steam generator, an outlet of the high-temperature molten salt heat absorber is connected with an inlet of a hot side of the steam generator, and an outlet of the hot side of the steam generator is connected with an inlet of the high-temperature molten salt heat absorber. As preferred, add high temperature molten salt jar and low temperature molten salt jar, high temperature molten salt heat absorber export with high temperature molten salt jar import links to each other, high temperature molten salt jar export with steam generator's hot side import links to each other, steam generator's hot side export links to each other with low temperature molten salt jar import, low temperature molten salt jar export with molten salt heat absorber import links to each other. The high-temperature molten salt stored in the high-temperature molten salt storage tank can generate steam with corresponding amount in the steam generator according to the requirement, and the fluctuation influence of sunlight is relieved.
A low-temperature heat absorption working medium heat storage tank is further additionally arranged, an outlet of the low-temperature heat absorber is connected with an inlet of the low-temperature heat absorption working medium storage tank, and an outlet of the low-temperature heat absorption working medium storage tank is connected with a hot side inlet of the feed water heater. The low-temperature heat absorption working medium enters the low-temperature heat absorber for heating and then enters the low-temperature heat absorption working medium storage tank, and the fluctuation influence of sunlight is relieved due to the storage effect of the storage tank.
The tower type solar high-low temperature mixed heat absorption power generation system further comprises a steam generator, a steam turbine, a condenser and a water feeding pump, wherein an outlet of the high-temperature molten salt heat absorber is connected with an inlet of a hot side of the steam generator, and an outlet of the hot side of the steam generator is connected with an inlet of the high-temperature molten salt heat absorber; the steam generator is characterized in that a cold side inlet of the steam generator is connected with a cold side outlet of the feed water heater and/or a feed water outlet of the regenerative heater, a cold side outlet of the steam generator is connected with a steam turbine inlet, a steam turbine outlet is connected with a condenser inlet, a condenser outlet is connected with an inlet of the feed water pump, and an outlet of the feed water pump is connected with a cold side inlet of the feed water heater and/or a feed water inlet of the regenerative heater. The high-temperature molten salt heat absorber heats molten salt by utilizing high-power condensation of the heliostat field, and the high-temperature molten salt enters the hot side of the steam generator again to serve as a heat source to heat feed water at the cold side of the steam generator so as to generate high-temperature high-pressure steam; and high-temperature and high-pressure steam enters the steam turbine again and expands to do work, exhaust steam from the steam turbine enters the condenser and is condensed into liquid water, and the liquid water is boosted by the water supply pump, enters the regenerative heater and/or the water supply heater and then enters the cold side of the steam generator. The low-temperature heat absorption working medium is heated by the low-temperature heat absorption working medium heat absorber and enters the hot side of the feed water heater as a heat source to heat feed water, so that the steam extraction amount required by the regenerative heater is reduced, and the output power of the steam turbine is improved.
The high-temperature molten salt heat absorber is a device for improving the temperature of a molten salt working medium by utilizing concentrating solar energy, and the outlet molten salt can reach more than 550 ℃; the low-temperature heat absorber is a device for improving the temperature of a low-temperature heat absorbing working medium by utilizing concentrated solar energy, and the low temperature is relative to the temperature of a high-temperature molten salt heat absorber, wherein the temperature of the low-temperature working medium can reach 300 ℃; the feed water heater is a device for heating Rankine cycle feed water by using a low-temperature heat absorption working medium as a heat source; the steam turbine is a device which applies work by utilizing high-temperature and high-pressure steam, and is also called a steam turbine; the heat recovery heater is a device for heating water supply by using extracted steam in a steam turbine; the steam generator is a device for heating, evaporating and superheating liquid water by using a high-temperature heat source.
The utility model discloses utilize the low temperature heat absorber that high temperature fused salt heat absorber both ends set up, absorb "light that overflows" and "abandon light" for improve feedwater temperature, and connect in parallel or establish ties with backheating heater, reduced from steam turbine's extraction capacity, improved steam turbine's output and system efficiency. Furthermore, the utility model discloses can carry out corresponding upgrading based on original tower molten salt system and reform transform, it is little to original system influence, reduced the transformation cost, system efficiency is expected to improve more than 10%.
Drawings
FIG. 1 is a schematic view of specific example 1;
FIG. 2 is a schematic view of embodiment 2;
FIG. 3 is a schematic view of embodiment 3;
FIG. 4 is a schematic view of embodiment 4;
FIG. 5 is a schematic view of the specific example 5;
FIG. 6 is a schematic view of embodiment 6.
In the figure: 1-upper low temperature heat absorber; 2-high temperature molten salt heat absorber; 3-low temperature heat absorber; 4-a feedwater heater; 5-adjusting the valve; 6-a regenerative heater; 7-low temperature heat absorption working medium storage tank; 8-a low-temperature heat-absorption working medium pump; 9-a steam generator; 10-a steam turbine; 11-a condenser; 12-a feed pump; 13-a generator.
Detailed Description
Example 1
The utility model provides a mixed heat absorption power generation system of tower solar energy high low temperature, as shown in figure 1, including last low temperature heat absorber 1, high temperature fused salt heat absorber 2, lower low temperature heat absorber 3, feedwater heater 4. The upper low-temperature heat absorber 1 is positioned at the upper end of the high-temperature molten salt heat absorber 2, and the lower low-temperature heat absorber 3 is positioned at the lower end of the high-temperature molten salt heat absorber 2, i.e. the high-temperature molten salt heat absorber 2 is positioned between the upper low-temperature heat absorber 1 and the lower low-temperature heat absorber 3. The upper low-temperature heat absorber 1 and the lower low-temperature heat absorber 3 are connected in series to form a low-temperature heat absorber. The outlet of the upper low-temperature heat absorber 1 is connected with the inlet of the hot side of the water supply heater 4, the outlet of the hot side of the water supply heater 4 is connected with the inlet of the lower low-temperature heat absorber 3, and the outlet of the lower low-temperature heat absorber 3 is connected with the inlet of the upper low-temperature heat absorber 2. The low-temperature heat absorber is used for absorbing 'light overflow' and 'light abandon' of heliostat field condensation, heating the low-temperature heat absorption working medium flowing through the low-temperature heat absorption working medium, the temperature can reach 300 ℃, the heated low-temperature heat absorption working medium enters the hot side of the water supply heater 4, the cold side water supply of the water supply heater 4 is heated, and the water supply temperature is improved. The low-temperature heat absorption working medium of the low-temperature heat absorber is any one of water, heat conduction oil and low-temperature molten salt. The high-temperature molten salt heat absorber absorbs the main energy of the heliostat field condensation and is used for heating the high-temperature molten salt, and the temperature can reach more than 550 ℃.
Example 2
In addition to the embodiment 1, a regenerative heater 6 and a regulating valve 5 are added, as shown in fig. 2, an inlet of the regulating valve 5 is connected to a feed water inlet of the regenerative heater 6, an outlet of the regulating valve 5 is connected to a cold side inlet of the feed water heater 4, and a cold side outlet of the feed water heater 4 is connected to a feed water outlet of the regenerative heater 6, that is, the feed water heater 4 is connected in parallel to the regenerative heater 6. The regenerative heater 6 heats the feed water by using the extracted steam of the steam turbine, thereby reducing the heat input of a heat source and improving the power generation efficiency. According to the intensity of the sunlight, the opening of the regulating valve 5 is adjusted, and the water supply quantity entering the water supply heater 4 and the regenerative heater 6 is distributed. When the solar energy is sufficient, the heat absorbed by the low-temperature heat absorption working medium from the low-temperature heat absorber is increased, the opening degree of the regulating valve 5 is increased, the water supply quantity entering the cold side of the water supply heater 4 is increased, the water supply quantity entering the regenerative heater 6 is reduced, and the water supply outlet temperature of the regenerative heater 6 and the outlet temperature of the water supply heater 4 are ensured to be stable, so that the steam extraction quantity required by the regenerative heater 6 from the steam turbine is reduced, and the output power of the steam turbine is improved. When sunlight is weak or not, the regulating valve 5 is closed, all the supplied water passes through the regenerative heater 6, and the regenerative heating is carried out by the extraction steam of the steam turbine, namely, the traditional steam extraction regenerative power generation mode is changed.
Example 3
In embodiment 1, as shown in fig. 3, the regenerative heater 6 and the feedwater heater 4 are connected in series, that is, the feedwater outlet of the regenerative heater 6 is connected to the cold-side inlet of the feedwater heater 4. The feed water is heated by the regenerative heater 6 and then by the feed water heater 4, so that the feed water temperature is greatly increased.
Example 4
In embodiment 1, as shown in fig. 4, the regenerative heater 6 and the feedwater heater 4 are connected in series, that is, the cold-side outlet of the feedwater heater 4 is connected to the feedwater inlet of the regenerative heater 6. The feed water is heated by the feed water heater 4 and then passes through the regenerative heater 6. The low-temperature heat absorption working medium heated by the concentrated solar energy flows through the hot side of the feed water heater 4 to heat the feed water at the cold side of the feed water heater 4, so that the feed water temperature entering the regenerative heater 6 is increased, the steam extraction quantity of the steam turbine required by the regenerative heater 6 is reduced, and the power of the steam turbine is increased.
Example 5
As shown in fig. 5, the embodiment 2 is further modified by adding a low-temperature heat absorption working medium storage tank 7, a low-temperature working medium pump 8, and a steam generator 9. The outlet of the upper low-temperature heat absorber 1 is connected with the inlet of a low-temperature heat absorption working medium storage tank 7, the outlet of the low-temperature heat absorption working medium storage tank 7 is connected with the inlet of a low-temperature working medium pump 8, and the outlet of the low-temperature working medium pump 8 is connected with the hot side inlet of the feed water heater 4. The outlet of the high-temperature molten salt heat absorber 2 is connected with the inlet of the hot side of the steam generator 9, and the outlet of the hot side of the steam generator 9 is connected with the inlet of the high-temperature molten salt heat absorber 2. The high-temperature molten salt heat absorber absorbs main condensation energy of the heliostat field to heat molten salt, and the heated high-temperature molten salt enters the hot side of the steam generator 9 to serve as a heat source to heat feed water and generate high-temperature steam. By means of the regulating valve 5, the feed water quantity into the regenerative heater 6 and the feed water heater 4 can be distributed. The low-temperature heat absorption working medium absorbs the 'light overflow' and 'light abandon' of the heliostat field in the low-temperature heat absorber, the heated low-temperature heat absorption working medium enters the low-temperature working medium storage tank 7 for storage, and then enters the hot side of the water supply heater 4 through the low-temperature working medium pump 8 to be used as a heat source for heating water supply, so that the steam extraction amount of a steam turbine required by the heat recovery heater 6 is reduced.
Example 6
As shown in fig. 6, in addition to embodiment 5, a steam turbine 10, a condenser 11, a feed water pump 12, and a generator 13 are added. The feed water outlet of the regenerative heater 6 is connected with the cold side outlet of the feed water heater 4 and then connected with the cold side inlet of the steam generator 9, the cold side outlet of the steam generator 9 is connected with the inlet of the steam turbine 10, the exhaust outlet of the steam turbine 10 is connected with the inlet of the condenser 11, the outlet of the condenser 11 is connected with the inlet of the feed water pump 12, and the outlet of the feed water pump 12 is connected with the feed water inlet of the regenerative heater 6 and the inlet of the regulating valve 5. The extraction inlet of the regenerative heater 6 is connected to the extraction port of the steam turbine 10. The feed water heated by the heat recovery heater 6 and the feed water heater 4 enters the cold side of the steam generator 9, is heated by high-temperature molten salt to generate high-temperature high-pressure steam, the steam enters the steam turbine 10 to expand and do work, the steam turbine 10 is connected with the generator 13 to drive the generator 13 to generate electricity, and the electricity is output outwards. The exhaust steam discharged from the steam turbine 10 enters a condenser 11 to be condensed into liquid water, then enters a water supply pump 12, is subjected to pressure boosting through the water supply pump 12, and then enters a regenerative heater 6 or a water supply heater 4. When sunlight is sufficient, the heat absorbed by the low-temperature heat absorption working medium is increased, the adjusting valve 5 is opened to increase the water supply quantity entering the water supply heater 4, reduce the water supply quantity entering the heat recovery heater 6 and keep the temperature of the cold side inlet of the steam generator 9 stable, so that the steam extraction quantity of the steam turbine required by the heat recovery heater 6 is reduced, and the power of the steam turbine 10 is improved.
Claims (10)
1. A tower type solar high-low temperature mixed heat absorption power generation system comprises a high-temperature molten salt heat absorber, a low-temperature heat absorber and a water supply heater, and is characterized in that an outlet of a hot side of the water supply heater is connected with an inlet of the low-temperature heat absorber, an outlet of the low-temperature heat absorber is connected with an inlet of the water supply heater, namely the hot side of the water supply heater is connected with the low-temperature heat absorber in series; the low temperature heat absorber divide into low temperature heat absorber and lower low temperature heat absorber, it is located to go up the low temperature heat absorber high temperature fused salt heat absorber upper end, lower low temperature heat absorber is located high temperature fused salt heat absorber lower extreme, promptly the high temperature fused salt heat absorber is located the centre of low temperature heat absorber and lower low temperature heat absorber.
2. The tower-type solar high-low temperature hybrid endothermic power generation system according to claim 1, further comprising a regenerative heater and a regulating valve, wherein an inlet of the regulating valve is connected to a feed water inlet of the regenerative heater, an outlet of the regulating valve is connected to a cold side inlet of the feed water heater, and a cold side outlet of the feed water heater is connected to a feed water outlet of the regenerative heater, that is, the regenerative heater is connected in parallel with the feed water heater.
3. The tower-type solar high-low temperature hybrid endothermic power generation system according to claim 1, further comprising a regenerative heater, wherein a feed water outlet of the regenerative heater is connected to a cold side inlet of the feed water heater, that is, the regenerative heater is connected in series with the feed water heater.
4. The tower-type solar high-low temperature hybrid endothermic power generation system according to claim 1, further comprising a regenerative heater, wherein a cold side outlet of the feed water heater is connected to a feed water inlet of the regenerative heater, that is, the feed water heater is connected in series with the regenerative heater.
5. The tower-type solar high-low temperature hybrid endothermic power generation system according to any one of claims 1, 2, 3 or 4, further comprising a low-temperature endothermic working medium storage tank, wherein an outlet of the low-temperature endothermic working medium storage tank is connected to an inlet of the low-temperature endothermic working medium storage tank, and an outlet of the low-temperature endothermic working medium storage tank is connected to a hot side inlet of the feedwater heater.
6. The tower type solar high-low temperature hybrid endothermic power generation system according to any one of claims 1, 2, 3 or 4, further comprising a steam generator, wherein the outlet of the high temperature molten salt heat absorber is connected with the inlet of the hot side of the steam generator, and the outlet of the hot side of the steam generator is connected with the inlet of the high temperature molten salt heat absorber.
7. The tower-type solar high-low temperature hybrid endothermic power generation system according to any one of claims 1, 2, 3 or 4, wherein the upper low temperature heat absorber and the lower low temperature heat absorber are connected in parallel or in series.
8. The tower type solar high-low temperature hybrid endothermic power generation system according to any one of claims 1, 2, 3 or 4, further comprising a steam generator, a steam turbine, a condenser and a feed water pump, wherein an outlet of the high-temperature molten salt heat absorber is connected with an inlet of a hot side of the steam generator, and an outlet of the hot side of the steam generator is connected with an inlet of the high-temperature molten salt heat absorber; the steam generator is characterized in that a cold side inlet of the steam generator is connected with a cold side outlet of the feed water heater and/or a feed water outlet of the regenerative heater, a cold side outlet of the steam generator is connected with a steam turbine inlet, a steam turbine outlet is connected with a condenser inlet, a condenser outlet is connected with an inlet of the feed water pump, and an outlet of the feed water pump is connected with a cold side inlet of the feed water heater and/or a feed water inlet of the regenerative heater.
9. The tower-type solar high-low temperature hybrid endothermic power generation system according to any one of claims 2, 3 or 4, characterized in that the low-temperature endothermic working medium of the low-temperature heat absorber is any one of water, heat transfer oil and low-temperature molten salt, the regenerative heater is divided into at least 2 stages of regenerative heaters, and the regenerative heaters of each stage are connected in series.
10. The tower type solar high-low temperature hybrid endothermic power generation system according to claim 6, further comprising a high temperature molten salt tank and a low temperature molten salt tank, wherein the outlet of the high temperature molten salt heat absorber is connected with the inlet of the high temperature molten salt tank, the outlet of the high temperature molten salt tank is connected with the inlet of the hot side of the steam generator, the outlet of the hot side of the steam generator is connected with the inlet of the low temperature molten salt tank, and the outlet of the low temperature molten salt tank is connected with the inlet of the molten salt heat absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022751537.5U CN213775617U (en) | 2020-11-25 | 2020-11-25 | Tower type solar high-low temperature mixed heat absorption power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022751537.5U CN213775617U (en) | 2020-11-25 | 2020-11-25 | Tower type solar high-low temperature mixed heat absorption power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213775617U true CN213775617U (en) | 2021-07-23 |
Family
ID=76891288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022751537.5U Expired - Fee Related CN213775617U (en) | 2020-11-25 | 2020-11-25 | Tower type solar high-low temperature mixed heat absorption power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213775617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542408A (en) * | 2020-11-25 | 2022-05-27 | 杭州明晟新能源科技有限公司 | Tower type solar high-low temperature mixed heat absorption power generation system |
-
2020
- 2020-11-25 CN CN202022751537.5U patent/CN213775617U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542408A (en) * | 2020-11-25 | 2022-05-27 | 杭州明晟新能源科技有限公司 | Tower type solar high-low temperature mixed heat absorption power generation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105863977B (en) | A kind of supercritical carbon dioxide Brayton cycle electricity generation system and method | |
| CN106089340B (en) | Groove type solar conduction oil and fused salt mixing heat power generation system | |
| WO2015154585A1 (en) | Optimized integrated system for solar-biomass hybrid electricity generation | |
| CN103147945B (en) | Solar power and biomass power complementing organic Rankine cycle cogeneration system | |
| CN104632560A (en) | Method and system for closing type Britten-Rankine combined cycle solar heat power generation | |
| CN104653420A (en) | Tower solar thermal power generation method and system using closed Brayton cycle | |
| CN109296511B (en) | Supercritical carbon dioxide Brayton cycle tower type solar thermal power generation system | |
| CN108533467A (en) | A kind of slot type of power regulation, tower photo-thermal and photovoltaic can heat accumulation electricity generation systems | |
| CN108518324B (en) | Tower type solar thermal coupling coal-fired power generation system with energy storage function | |
| CN104653419A (en) | Closed Brayton tower solar thermal power generation method and system | |
| CN204572366U (en) | Enclosed Boulez is adopted to pause the tower-type solar thermal power generating system of circulation | |
| CN101968042B (en) | Multistage full-effect solar heat power generation method | |
| CN113819659B (en) | Thermal power generating unit peak regulation system and method for solar-assisted heating of condensed water | |
| CN205478136U (en) | Reduce structure of tower solar photothermal power of fused salt station heat waste | |
| CN104764217A (en) | Generalized closed Brayton type tower type solar thermal power generation method and system | |
| CN110761859A (en) | Inclined temperature layer heat storage peak regulation system and peak regulation method based on low-pressure heating loop | |
| CN104179646A (en) | Photo-thermal energy and terrestrial heat combined complementary renewable energy power station system | |
| CN106014889B (en) | Tower type solar photo-thermal and photovoltaic combined power generation system | |
| CN102966495B (en) | Tower type solar energy-steam combustion gas combined cycle power generation system | |
| CN204572363U (en) | Enclosed Boulez pauses-Rankine combined cycle solar heat power generation system | |
| CN213775617U (en) | Tower type solar high-low temperature mixed heat absorption power generation system | |
| CN110056489A (en) | Photovoltaic power generation and solar thermal energy-combined combustion and steam turbine power complementary power generation system | |
| CN109026240A (en) | The electricity generation system and method coupled based on nuclear energy with solar energy | |
| CN203114542U (en) | Organic Rankine cycle combined heat and power generation system with complementary solar energy and biomass energy | |
| CN213511061U (en) | Tower-type solar high-low temperature step heat absorption and storage power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210723 |