CN107100807A - Direct contact heat transfer tower type solar energy thermal power generation station system and its method of work - Google Patents
Direct contact heat transfer tower type solar energy thermal power generation station system and its method of work Download PDFInfo
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- CN107100807A CN107100807A CN201710243346.8A CN201710243346A CN107100807A CN 107100807 A CN107100807 A CN 107100807A CN 201710243346 A CN201710243346 A CN 201710243346A CN 107100807 A CN107100807 A CN 107100807A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/063—Tower concentrators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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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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- Combustion & Propulsion (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of direct contact heat transfer tower type solar energy thermal power generation station system and its method of work, belong to solar energy heat utilization field.The system includes heliostat field, heat dump, fused salt accumulation of heat heat release subsystem, turbine, generator, preheater, cooler, compressor.Sunshine is reflexed in heat dump by heliostat field, after compression, the gas push turbine for producing HTHP by heat dump does work to be generated electricity gas, and according to the difference of solar energy intensity, method of work is adjusted with reference to fused salt accumulation of heat heat release subsystem.The present invention is using the features such as fuse salt steam is forced down, temperature in use scope is wide, using gas and fuse salt direct contact heat transfer mode, substitute traditional wall-type heat exchange, heat exchange efficiency can be improved, reduce heat transfer temperature difference, gas is working media simultaneously, it is to avoid a wide range of Flow Corrosion and the frozen block phenomenon in pipeline of fuse salt；The operation of the continuous-stable in the case of different solar energy intensity can be realized simultaneously, and there is provided stable high-quality electric energy.
Description
Technical field
The present invention devises a kind of direct contact heat transfer tower type solar energy thermal power generation station system and its method of work, belongs to too
Positive energy heat utilization field.
Background technology
In energy crisis and environmental problem increasingly serious today, develop free of contamination regenerative resource and compel in eyebrow
Eyelash.Solar energy is a kind of safe, cleaning, reproducible green energy resource, and the utilization of solar energy mainly has photothermal conversion and light
Electricity conversion.Wherein, solar light-heat power-generation refers to, collects solar thermal energy using extensive heliostat field, is produced by heat-exchanger rig
Raw steam, generates electricity with reference to traditional electrification technique.Due to the intermittence of solar energy, existing solar energy thermal-power-generating station system is also matched somebody with somebody
There is inexpensive large-scale hold over system, to provide the electric energy of stable high-quality.Fuse salt is because temperature in use scope is wide, thermal capacitance
Amount is big, steam is forced down, service life and price are superior to other heat storage mediums such as conduction oil, is widely used in hold over system
In.
Direct contact heat transfer refers to that the two media for participating in heat exchange is exchanged heat by the way of directly contacting, Ke Yishi
Same media or different, but require that two media must can be easily separated.Direct contact heat transfer and traditional heat exchange
Mode is compared, and high with heat exchange efficiency, heat transfer temperature difference is small, and is difficult corrosion and scaling, thus is widely used in desalinization, underground heat
The fields such as generating, the recovery of middle low-temperature heat source and wastewater treatment.
It is use fuse salt as heat-collection and heat-accumulation medium in existing solar energy thermal-power-generating station more, with reference to Steam Power Circulation
Generate electricity, heat-exchanger rig uses dividing wall type heat exchanger, but heat exchanged thermoresistance is big, heat exchange efficiency is not high, and fused salt is a wide range of in pipeline
Corrosion and frozen block phenomenon can occur for flowing.How to solve heat exchange efficiency not high, it is to avoid the potential safety hazard during fused salt use, be
The current urgent problem to be solved of solar energy thermal-power-generating technology.
The content of the invention
The present invention is directly connect using the features such as fuse salt steam is forced down, temperature in use scope is wide using gas with fuse salt
Heat exchange mode is touched, traditional wall-type heat exchange is substituted, heat exchange efficiency can be improved, reduces heat transfer temperature difference, while gas is work
Medium, it is to avoid a wide range of Flow Corrosion and the frozen block phenomenon in pipeline of fuse salt.Gas can be air, nitrogen and titanium dioxide
Carbon etc., is easily obtained, non-corrosiveness.
A kind of direct contact heat transfer tower type solar energy thermal power generation station system, it is characterised in that：The system include heliostat field,
Heat dump, fused salt accumulation of heat heat release subsystem, turbine, generator, preheater, cooler and compressor, wherein fused salt accumulation of heat heat release
Subsystem includes high temperature direct contact heat transfer device, accumulation of heat high temperature salt pump, heat release high temperature salt pump, accumulation of heat low temperature salt pump I, heat release low temperature
Salt pump, high temperature salt cellar, low temperature salt cellar, thermohaline pump, accumulation of heat low temperature salt pump II and middle temperature direct contact heat transfer in middle thermohaline tank, accumulation of heat
Device；
Preheater includes cold side input port, cold side outlet port, hot side entrance and hot side outlet, and high temperature direct contact heat transfer device includes bottom
Gas access, bottom fused salt opening, upper gas outlet and top fused salt opening, middle temperature direct contact heat transfer device include bottom gas
Body entrance, bottom fused salt entrance, upper gas outlet and the outlet of top fused salt, cooler include cold side input port, cold side outlet port, heat
Side entrance and hot side outlet；
Heliostat field is arranged on the ground of heat dump surrounding；
Compressor outlet is connected with preheater cold side input port, preheater cold side outlet port point two-way, directly contacts change with high temperature all the way
Hot device lower gas entrance is connected, and the outlet of high temperature direct contact heat transfer device upper gas is divided into two-way, all the way with turbine entrance phase
Even, another road is connected with heat dump entrance, heat dump outlet point two-way, is connected all the way with turbine entrance, another road and high temperature are straight
Connect contact heat-exchanging device lower gas entrance to be connected, turbine is connected with generator coaxle, while turbine outlet point two-way, all the way with
Warm direct contact heat transfer device lower gas entrance is connected, and another road is connected with preheater hot side entrance, middle temperature direct contact heat transfer
The outlet of device upper gas is connected with cooler hot side entrance, and preheater hot side outlet is connected with cooler hot side entrance, cooler
Hot side outlet is connected with compressor inlet；
High temperature salt cellar and middle thermohaline tank are directly contacted by accumulation of heat high temperature salt pump and heat release high temperature salt pump in parallel with high temperature respectively
Heat exchanger top fused salt opening is connected, and high temperature direct contact heat transfer device bottom fused salt opening passes through accumulation of heat low temperature salt pump I in parallel
It is connected with heat release low temperature salt pump with low temperature salt cellar, low temperature salt cellar also passes through accumulation of heat low temperature salt pump II and middle temperature direct contact heat transfer device
Bottom fused salt entrance is connected, and fused salt outlet in middle temperature direct contact heat transfer device top passes through thermohaline pump and middle thermohaline tank phase in accumulation of heat
Even；
High temperature salt cellar is connected with high-temperature molten salt triple valve first end, the end of high-temperature molten salt triple valve second by accumulation of heat high temperature salt pump,
The end of high-temperature molten salt triple valve the 3rd by heat release high temperature salt pump, accumulation of heat high temperature salt pump with it is straight with high temperature after heat release high temperature salt parallel connection of pumps
Connect contact heat-exchanging device top fused salt opening to be connected, low temperature salt cellar opening is connected with low-temperature molten salt triple valve first end, low-temperature molten salt
The end of triple valve second passes through heat release low temperature salt pump, accumulation of heat low temperature salt by accumulation of heat low temperature salt pump I, the end of low-temperature molten salt triple valve the 3rd
Pump I（6）With being connected after heat release low temperature salt parallel connection of pumps with high temperature direct contact heat transfer device bottom fused salt opening；
Major loop gas control valve I, heat dump outlet and turbine are provided between above-mentioned preheater cold side outlet port and heat dump entrance
Between be provided with major loop gas control valve II, high temperature direct contact heat transfer device lower gas entrance has two-way, all the way with preheater
Accumulation of heat gas access valve is provided between cold side outlet port, exothermal gas inlet valve, high temperature are provided between another road and heat dump outlet
There is two-way the outlet of direct contact heat transfer device upper gas, is provided with exothermal gas outlet valve between heat dump entrance all the way, another
Between road and turbine entrance be provided with accumulation of heat gas vent valve, turbine outlet with middle temperature direct contact heat transfer device lower gas entrance it
Between be provided with backheat gas control valve, between high temperature salt cellar opening and high-temperature molten salt triple valve be provided with high-temperature molten salt regulating valve, high temperature
Fused salt triple valve is provided with middle temperature molten salt regulating valve also between middle thermohaline tank.
The method of work of described direct contact heat transfer tower type solar energy thermal power generation station system, it is characterised in that including with
Lower process：
When solar energy is sufficient, opens major loop gas control valve I, exothermal gas inlet valve, major loop gas control valve II, put
Hot gas outlet valve, high-temperature molten salt regulating valve, backheat gas control valve, close accumulation of heat gas access valve, accumulation of heat gas vent valve
With middle temperature molten salt regulating valve, the directly contact of low temperature salt cellar, accumulation of heat low temperature salt pump I and high temperature is connected by low-temperature molten salt triple valve and changed
Hot device bottom fused salt open passageway, high temperature direct contact heat transfer device is connected with high-temperature molten salt regulating valve by high-temperature molten salt triple valve
Top fused salt opening, accumulation of heat high temperature salt pump and high temperature salt cellar path, after the preheated device preheating of air of compressor outlet, into suction
Hot device heat absorption, the high temperature and high pressure gas point two-way of outlet, a-road-through is crossed high temperature direct contact heat transfer device and directly connect with low-temperature molten salt
Touch, heat is transmitted to low-temperature molten salt, the gas after heat release comes back to heat dump heat absorption, the high-temperature molten salt after heating passes through accumulation of heat
High temperature salt pump enters high temperature salt cellar, and another road enters turbine acting and generated electricity, the gas point two-way after heat release acting, in entering all the way
Warm direct contact heat transfer device, the low-temperature molten salt being pumped into low temperature salt cellar by accumulation of heat low temperature salt pump II directly contacts accumulation of heat, heat release
Gas afterwards is cooled down into cooler, and the gas that preheater hot side entrance preheats compressor outlet is entered on another road, rear to enter cooling
Device is cooled down, and the gas after cooling is re-compressed into compressor, during the middle temperature molten salt after accumulation of heat is entered by thermohaline pump in accumulation of heat
Thermohaline tank；
When solar energy is slightly weak, but the high temperature and high pressure gas of heat dump outlet are when remaining to promote the turbine acting generate electricity, and open major loop
Gas control valve I, major loop gas control valve II and backheat gas control valve, close exothermal gas inlet valve, exothermal gas and go out
Mouth valve, accumulation of heat gas access valve, accumulation of heat gas vent valve, high-temperature molten salt regulating valve and low-temperature molten salt regulating valve, close high temperature melting
Salt triple valve and low-temperature molten salt triple valve, after the preheated device preheating of air of compressor outlet, into heat dump heat absorption, outlet
High temperature and high pressure gas enter turbine acting and generated electricity, the gas point two-way after heat release acting, all the way into middle temperature direct contact heat transfer
Device, the low-temperature molten salt being pumped into low temperature salt cellar by accumulation of heat low temperature salt pump II directly contacts accumulation of heat, and the gas after heat release enters cold
But device is cooled down, and the gas that preheater hot side entrance preheats compressor outlet is entered on another road, rear to enter cooler cooling, after cooling
Gas is re-compressed into compressor, thermohaline tank during the middle temperature molten salt after accumulation of heat is entered by thermohaline pump in accumulation of heat；
When solar energy is poor, and the high temperature and high pressure gas of heat dump outlet are not enough to promote turbine acting generating, major loop is opened
Gas control valve I, major loop gas control valve II, accumulation of heat gas inlet valve, accumulation of heat gas vent valve and middle temperature molten salt regulating valve,
Exothermal gas inlet valve, exothermal gas outlet valve, high-temperature molten salt regulating valve and backheat gas control valve are closed, passes through high-temperature molten salt
Thermohaline tank, heat release high temperature salt pump and high temperature direct contact heat transfer device top fused salt are opened during triple valve is connected with middle temperature molten salt regulating valve
Mouthful path, high temperature direct contact heat transfer device bottom fused salt opening, heat release low temperature salt pump and low are connected by low-temperature molten salt triple valve
Thermohaline tank path, point two-way after the preheated device preheating of air of compressor outlet, enters heat dump and absorbs heat, another road passes through all the way
High temperature direct contact heat transfer device directly contacts heat absorption with middle temperature molten salt, and the gas after heat absorption enters turbine acting and generated electricity, and heat release is done
The laggard preheater hot side entrance of work(preheats the gas of compressor outlet, rear to enter cooler cooling, and the gas after cooling enters pressure
Contracting machine is re-compressed, and the low-temperature molten salt after heat release enters low temperature salt cellar by heat release low temperature salt pump；
When there is no solar energy, close major loop gas control valve I, major loop gas control valve II, exothermal gas inlet valve, put
Hot gas outlet valve, high-temperature molten salt regulating valve, middle temperature molten salt regulating valve and backheat gas control valve, open accumulation of heat gas access valve
With accumulation of heat gas vent valve, high temperature salt cellar, heat release high temperature salt pump are connected with high-temperature molten salt regulating valve by high-temperature molten salt triple valve
With high temperature direct contact heat transfer device top fused salt open passageway, high temperature direct contact heat transfer device is connected by low-temperature molten salt triple valve
Bottom fused salt opening, heat release low temperature salt pump and low temperature salt cellar path, height is passed through after the preheated device preheating of air of compressor outlet
Warm direct contact heat transfer device directly contacts heat absorption with hot melt salt, and the gas after heat absorption enters turbine acting and generated electricity, after heat release acting
Enter the gas that preheater hot side entrance preheats compressor outlet, rear to enter cooler cooling, the gas after cooling enters compressor
Re-compress, the low-temperature molten salt after heat release enters low temperature salt cellar by heat release low-temperature molten salt.
The present invention is provided with four kinds of mode of operations for the different situation of solar energy, when solar energy is sufficient, using too
While sun can be generated electricity, unnecessary heat is stored with fuse salt, and the waste heat of recovery gas turbine exit gas；Too
When sun can be slightly weak, generated electricity merely with solar energy, and the waste heat of recovery gas turbine exit gas；When solar energy is poor, use
Solar energy and middle temperature molten salt promote turbine acting to generate electricity simultaneously；When not having solar energy, the heat stored in release fuse salt comes
Generate electricity.The system can realize the operation of the continuous-stable in the case of different solar energy intensity, reduce the impact to power network, carry
For stable high-quality electric energy, while using two-stage heat accumulation subsystem, improving the effective rate of utilization of heat.
Brief description of the drawings
The tower type solar energy thermal power generation station system diagram of Fig. 1 gases and fuse salt direct contact heat transfer；
Direct contact heat transfer device schematic diagram described in Fig. 2；
Described in Fig. 3 when solar energy is sufficient system work process figure；
Described in Fig. 4 when solar energy is slightly weak system work process figure；
Described in Fig. 5 when solar energy is poor system work process figure；
Described in Fig. 6 when no solar energy system work process figure；
Label title in figure：1- heliostat fields；2- heat dumps；3- high temperature direct contact heat transfer devices；4- accumulation of heat high temperature salt pumps；5- is put
Hot high temperature salt pump；6- accumulation of heat low temperature salt pump I；7- heat release low temperature salt pumps；8- high temperature salt cellars；9- low temperature salt cellars；Thermohaline tank in 10-；
Thermohaline pump in 11- accumulation of heats；12- accumulation of heat low temperature salt pump II；The middle temperature direct contact heat transfer devices of 13-；14- turbines；15- generators；16-
Preheater；17- coolers；18- compressors；191- major loops gas control valve I；192- exothermal gas inlet valves；193- master returns
Road gas control valve II；194- exothermal gas outlet valves；195- accumulation of heat gas vent valves；196- accumulation of heats gas access valve；197-
High-temperature molten salt regulating valve；Temperature molten salt regulating valve in 198-；199- backheat gas control valves；201- high-temperature molten salt triple valves；202-
Low-temperature molten salt triple valve；2-1- gas vents；2-2- mist eliminators；2-3- liquid-inlets；2-4- fillers；2-5- supports screen；2-
6- gas feeds；2-7- liquid outlets.
Specific implementation method
Fig. 1 is direct contact heat transfer tower type solar energy thermal power generation station system diagram proposed by the present invention, illustrates system referring to Fig. 1
The course of work.
When solar energy is sufficient, major loop gas control valve I 191, exothermal gas inlet valve 192, major loop gas are opened
Regulating valve II 193, exothermal gas outlet valve 194, high-temperature molten salt regulating valve 197, backheat gas control valve 199, close accumulation of heat gas
Body inlet valve 196, accumulation of heat gas vent valve 195 and middle temperature molten salt regulating valve 198, connect low by low-temperature molten salt triple valve 202
Thermohaline tank 9, accumulation of heat low temperature salt pump I 6 and the bottom fused salt open passageway of high temperature direct contact heat transfer device 3, pass through high-temperature molten salt threeway
Valve 201 connects the top fused salt opening of high temperature direct contact heat transfer device 3, accumulation of heat high temperature salt pump 4 and height with high-temperature molten salt regulating valve 197
The path of thermohaline tank 8, after the preheated device 16 of air that compressor 18 is exported is preheated, absorbs heat into heat dump 2, the HTHP of outlet
Gas point two-way, a-road-through is crossed high temperature direct contact heat transfer device 3 and directly contacted with low-temperature molten salt, and heat is transmitted into low-temperature molten salt,
Gas after heat release comes back to heat dump 2 and absorbed heat, and the high-temperature molten salt after heating enters high temperature salt cellar by accumulation of heat high temperature salt pump 4
8, another road enters the acting of turbine 14 and generated electricity, the gas point two-way after heat release acting, all the way into middle temperature direct contact heat transfer device
13, the low-temperature molten salt being pumped into low temperature salt 9 by accumulation of heat low temperature salt pump II 12 directly contacts accumulation of heat, and the gas after heat release enters cold
But device 17 is cooled down, and the gas that the pre- thermocompressor 18 of the hot side entrance of preheater 16 is exported is entered on another road, rear to be cooled down into cooler 17,
Gas after cooling is re-compressed into compressor 18, thermohaline during the middle temperature molten salt after accumulation of heat is entered by thermohaline pump 11 in accumulation of heat
Tank 10；
When solar energy is slightly weak, but the high temperature and high pressure gas that export of heat dump 2, when remaining to promote the acting of turbine 14 generate electricity, opening is led back
Road gas control valve I 191, major loop gas control valve II 193 and backheat gas control valve 199, close exothermal gas inlet valve
192nd, exothermal gas outlet valve 194, accumulation of heat gas access valve 196, accumulation of heat gas vent valve 195, the and of high-temperature molten salt regulating valve 197
Middle temperature molten salt regulating valve 198, closes high-temperature molten salt triple valve 201 and low-temperature molten salt triple valve 202, the air that compressor 18 is exported
After preheated device 16 is preheated, absorbed heat into heat dump 2, the high temperature and high pressure gas of outlet enter the acting of turbine 14 and generated electricity, and heat release is done
Gas point two-way after work(, all the way into middle temperature direct contact heat transfer device 13, accumulation of heat low temperature salt pump II 12 is passed through with low temperature salt cellar 9
The low-temperature molten salt being pumped into directly contacts accumulation of heat, and the gas after heat release is cooled down into cooler 17, and the hot side of preheater 16 is entered on another road
The gas that the pre- thermocompressor 18 of entrance is exported, rear to be cooled down into cooler 17, the gas after cooling is pressed again into compressor 18
Contracting, thermohaline tank 10 during the middle temperature molten salt after accumulation of heat is entered by thermohaline pump 11 in accumulation of heat；
When solar energy is poor, and the high temperature and high pressure gas that heat dump 2 is exported are not enough to promote the acting generating of turbine 14, opening is led back
Road gas control valve I 191, major loop gas control valve II 193, accumulation of heat gas inlet valve 196, the and of accumulation of heat gas vent valve 195
Middle temperature molten salt regulating valve 198, closes exothermal gas inlet valve 192, exothermal gas outlet valve 194, the and of high-temperature molten salt regulating valve 197
Backheat gas control valve 199, thermohaline tank 10, heat release in being connected by high-temperature molten salt triple valve 201 with middle temperature molten salt regulating valve 198
High temperature salt pump 5 and the top fused salt open passageway of high temperature direct contact heat transfer device 3, high temperature is connected by low-temperature molten salt triple valve 202
The bottom fused salt opening of direct contact heat transfer device 3, heat release low temperature salt pump 7 and the path of low temperature salt cellar 9, the air warp that compressor 18 is exported
Point two-way after preheater 16 is preheated, absorbs heat, another road passes through high temperature direct contact heat transfer device 3 and middle temperature into heat dump 2 all the way
Fused salt directly contacts heat absorption, and the gas after heat absorption enters the acting of turbine 14 and generated electricity, the laggard hot side entrance of preheater 16 of heat release acting
The gas that pre- thermocompressor 18 is exported, rear to be cooled down into cooler 17, the gas after cooling is re-compressed into compressor 18, is put
Low-temperature molten salt after heat enters low temperature salt cellar 9 by heat release low temperature salt pump 7；
When there is no solar energy, close major loop gas control valve I 191, major loop gas control valve II 193, exothermal gas and enter
Mouth valve 192, exothermal gas outlet valve 194, high-temperature molten salt regulating valve 197, middle temperature molten salt regulating valve 198 and backheat gas control valve
199, accumulation of heat gas access valve 196 and accumulation of heat gas vent valve 195 are opened, passes through high-temperature molten salt triple valve 201 and high-temperature molten salt
Regulating valve 197 connects high temperature salt cellar 8, heat release high temperature salt pump 5 and the top fused salt open passageway of high temperature direct contact heat transfer device 3, leads to
Cross low-temperature molten salt triple valve 202 and connect the bottom fused salt opening of high temperature direct contact heat transfer device 3, heat release low temperature salt pump 7 and low temperature salt
The path of tank 9, the preheated device 16 of air that compressor 18 is exported is direct by high temperature direct contact heat transfer device 3 and hot melt salt after preheating
Heat absorption is contacted, the gas after heat absorption enters the acting of turbine 14 and generated electricity, the laggard pre- hot compression of hot side entrance of preheater 16 of heat release acting
The gas that machine 18 is exported, rear to be cooled down into cooler 17, the gas after cooling is re-compressed into compressor 18, low after heat release
Temperature molten salt enters low temperature salt cellar 9 by heat release low-temperature molten salt 7.
Claims (2)
1. a kind of direct contact heat transfer tower type solar energy thermal power generation station system, it is characterised in that：The system includes heliostat field
（1）, heat dump（2）, fused salt accumulation of heat heat release subsystem, turbine（14）, generator（15）, preheater（16）, cooler（17）With
Compressor（18）, wherein fused salt accumulation of heat heat release subsystem include high temperature direct contact heat transfer device（3）, accumulation of heat high temperature salt pump（4）, put
Hot high temperature salt pump（5）, accumulation of heat low temperature salt pump I（6）, heat release low temperature salt pump（7）, high temperature salt cellar（8）, low temperature salt cellar（9）, middle thermohaline
Tank（10）, thermohaline pump in accumulation of heat（11）, accumulation of heat low temperature salt pump II（12）With middle temperature direct contact heat transfer device（13）；
Preheater（16）Including cold side input port, cold side outlet port, hot side entrance and hot side outlet, high temperature direct contact heat transfer device（3）
Including lower gas entrance, bottom fused salt opening, upper gas outlet and top fused salt opening, middle temperature direct contact heat transfer device
（13）Including lower gas entrance, bottom fused salt entrance, upper gas outlet and the outlet of top fused salt, cooler（17）Including cold
Side entrance, cold side outlet port, hot side entrance and hot side outlet；
Heliostat field（1）It is arranged in heat dump（2）On the ground of surrounding；
Compressor（18）Outlet and preheater（16）Cold side input port is connected, preheater（16）Cold side outlet port point two-way, all the way with height
Warm direct contact heat transfer device（3）Lower gas entrance is connected, high temperature direct contact heat transfer device（3）Upper gas outlet is divided into two
Road, all the way with turbine（14）Entrance is connected, another road and heat dump（2）Entrance is connected, heat dump（2）Outlet point two-way, all the way
With turbine（14）Entrance is connected, another road and high temperature direct contact heat transfer device（3）Lower gas entrance is connected, turbine（14）With hair
Motor（15）It is coaxial to be connected, while turbine（14）Outlet point two-way, all the way with middle temperature direct contact heat transfer device（13）Lower gas
Entrance is connected, another road and preheater（16）Hot side entrance is connected, middle temperature direct contact heat transfer device（13）Upper gas export with
Cooler（17）Hot side entrance is connected, preheater（16）Hot side outlet and cooler（17）Hot side entrance is connected, cooler（17）
Hot side outlet and compressor（18）Import is connected；
High temperature salt cellar（8）With low temperature salt cellar（10）Pass through accumulation of heat high temperature salt pump in parallel respectively（4）With heat release high temperature salt pump（5）With
High temperature direct contact heat transfer device（3）Top fused salt opening is connected, high temperature direct contact heat transfer device（3）Bottom fused salt opening passes through simultaneously
The accumulation of heat low temperature salt pump I of connection（6）With heat release low temperature salt pump（7）With low temperature salt cellar（9）It is connected, low temperature salt cellar（9）Also pass through accumulation of heat
Low temperature salt pump II（12）With middle temperature direct contact heat transfer device（13）Bottom fused salt entrance is connected, middle temperature direct contact heat transfer device（13）
Top fused salt outlet passes through thermohaline pump in accumulation of heat（11）With middle thermohaline tank（10）It is connected；
High temperature salt cellar（8）With high-temperature molten salt triple valve（201）First end is connected, high-temperature molten salt triple valve（201）Second end passes through
Accumulation of heat high temperature salt pump（4）, high-temperature molten salt triple valve（201）3rd end passes through heat release high temperature salt pump（5）, accumulation of heat high temperature salt pump（4）
With heat release high temperature salt pump（5）With high temperature direct contact heat transfer device after parallel connection（3）Top fused salt opening is connected, low temperature salt cellar（9）Open
Mouth and low-temperature molten salt triple valve（202）First end is connected, low-temperature molten salt triple valve（202）Second end passes through accumulation of heat low temperature salt pump I
（6）, low-temperature molten salt triple valve（202）3rd end passes through heat release low temperature salt pump（7）, accumulation of heat low temperature salt pump I（6）With heat release low temperature salt
Pump（7）With high temperature direct contact heat transfer device after parallel connection（3）Bottom fused salt opening is connected；
Above-mentioned preheater（16）Cold side outlet port and heat dump（2）Major loop gas control valve I is provided between entrance（191）, heat absorption
Device（2）Outlet and turbine（14）Between be provided with major loop gas control valve II（193）, high temperature direct contact heat transfer device（3）Bottom
There is two-way gas access, all the way with preheater（16）Accumulation of heat gas access valve is provided between cold side outlet port（196）, another road is with inhaling
Hot device（2）Exothermal gas inlet valve is provided between outlet（192）, high temperature direct contact heat transfer device（3）Upper gas outlet has two
Road, all the way with heat dump（2）Exothermal gas outlet valve is provided between entrance（194）, another road and turbine（14）Set between entrance
There is accumulation of heat gas vent valve（195）, turbine（14）Outlet and middle temperature direct contact heat transfer device（13）Set between lower gas entrance
There is backheat gas control valve（199）, high temperature salt cellar（8）Opening and high-temperature molten salt triple valve（201）Between provided with high-temperature molten salt adjust
Save valve（197）, high-temperature molten salt triple valve（201）Also with middle thermohaline tank（10）Between be provided with middle temperature molten salt regulating valve（198）.
2. the method for work of direct contact heat transfer tower type solar energy thermal power generation station system according to claim 1, its feature
It is, including procedure below：
When solar energy is sufficient, major loop gas control valve I is opened（191）, exothermal gas inlet valve（192）, major loop gas
Regulating valve II（193）, exothermal gas outlet valve（194）, high-temperature molten salt regulating valve（197）, backheat gas control valve（199）, close
Close accumulation of heat gas access valve（196）, accumulation of heat gas vent valve（195）With middle temperature molten salt regulating valve（198）, pass through low-temperature molten salt three
Port valve（202）Connect low temperature salt cellar（9）, accumulation of heat low temperature salt pump I（6）With high temperature direct contact heat transfer device（3）Bottom fused salt opening
Path, passes through high-temperature molten salt triple valve（201）With high-temperature molten salt regulating valve（197）Connect high temperature direct contact heat transfer device（3）On
Portion's fused salt opening, accumulation of heat high temperature salt pump（4）With high temperature salt cellar（8）Path, compressor（18）The preheated device of air of outlet（16）
After preheating, into heat dump（2）Heat absorption, the high temperature and high pressure gas point two-way of outlet, a-road-through crosses high temperature direct contact heat transfer device
（3）Directly contacted with low-temperature molten salt, heat is transmitted to low-temperature molten salt, the gas after heat release comes back to heat dump（2）Heat absorption, plus
High-temperature molten salt after heat passes through accumulation of heat high temperature salt pump（4）Into high temperature salt cellar（8）, another road enters turbine（14）Acting generates electricity,
Gas point two-way after heat release acting, all the way into middle temperature direct contact heat transfer device（13）, with low temperature salt cellar（9）It is low by accumulation of heat
Thermohaline pump II（12）The low-temperature molten salt being pumped into directly contacts accumulation of heat, and the gas after heat release enters cooler（17）Cooling, Ling Yilu
Enter preheater（16）The pre- thermocompressor of hot side entrance（18）The gas of outlet, enters cooler afterwards（17）Cooling, the gas after cooling
Body enters compressor（18）Re-compress, the middle temperature molten salt after accumulation of heat passes through thermohaline pump in accumulation of heat（11）The thermohaline tank in
（10）；
When solar energy is slightly weak, but heat dump（2）The high temperature and high pressure gas of outlet remain to promote turbine（14）When acting generates electricity, open
Major loop gas control valve I（191）, major loop gas control valve II（193）With backheat gas control valve（199）, close heat release
Gas access valve（192）, exothermal gas outlet valve（194）, accumulation of heat gas access valve（196）, accumulation of heat gas vent valve（195）、
High-temperature molten salt regulating valve（197）With middle temperature molten salt regulating valve（198）, close high-temperature molten salt triple valve（201）With low-temperature molten salt three
Port valve（202）, compressor（18）The preheated device of air of outlet（16）After preheating, into heat dump（2）Heat absorption, the high temperature of outlet
Gases at high pressure enter turbine（14）Acting generates electricity, the gas point two-way after heat release acting, all the way into middle temperature direct contact heat transfer
Device（13）, with low temperature salt cellar（9）Pass through accumulation of heat low temperature salt pump II（12）The low-temperature molten salt being pumped into directly contacts accumulation of heat, after heat release
Gas enters cooler（17）Cooling, preheater is entered on another road（16）The pre- thermocompressor of hot side entrance（18）The gas of outlet, after
Into cooler（17）Cooling, the gas after cooling enters compressor（18）Re-compress, the middle temperature molten salt after accumulation of heat is by storing
Hanker thermohaline pump（11）The thermohaline tank in（10）；
When solar energy is poor, heat dump（2）The high temperature and high pressure gas of outlet are not enough to promote turbine（14）When acting generates electricity, open
Major loop gas control valve I（191）, major loop gas control valve II（193）, accumulation of heat gas inlet valve（196）, accumulation of heat gas goes out
Mouth valve（195）With middle temperature molten salt regulating valve（198）, close exothermal gas inlet valve（192）, exothermal gas outlet valve（194）, it is high
Temperature molten salt regulating valve（197）With backheat gas control valve（199）, pass through high-temperature molten salt triple valve（201）With the regulation of middle temperature molten salt
Valve（198）Thermohaline tank in connection（10）, heat release high temperature salt pump（5）With high temperature direct contact heat transfer device（3）Top fused salt opening is led to
Road, passes through low-temperature molten salt triple valve（202）Connect high temperature direct contact heat transfer device（3）Bottom fused salt opening, heat release low temperature salt pump
（7）With low temperature salt cellar（9）Path, compressor（18）The preheated device of air of outlet（16）Point two-way after preheating, enters inhale all the way
Hot device（2）Heat absorption, another road passes through high temperature direct contact heat transfer device（3）Heat absorption is directly contacted with middle temperature molten salt, the gas after heat absorption
Body enters turbine（14）Acting generates electricity, the laggard preheater of heat release acting（16）The pre- thermocompressor of hot side entrance（18）The gas of outlet
Body, enters cooler afterwards（17）Cooling, the gas after cooling enters compressor（18）Re-compress, the low-temperature molten salt after heat release leads to
Cross heat release low temperature salt pump（7）Into low temperature salt cellar（9）；
When there is no solar energy, major loop gas control valve I is closed（191）, major loop gas control valve II（193）, put hot gas
Body inlet valve（192）, exothermal gas outlet valve（194）, high-temperature molten salt regulating valve（197）, middle temperature molten salt regulating valve（198）With return
Hot gas regulating valve（199）, open accumulation of heat gas access valve（196）With accumulation of heat gas vent valve（195）, pass through high-temperature molten salt three
Port valve（201）With high-temperature molten salt regulating valve（197）Connect high temperature salt cellar（8）, heat release high temperature salt pump（5）Directly contact and change with high temperature
Hot device（3）Top fused salt open passageway, passes through low-temperature molten salt triple valve（202）Connect high temperature direct contact heat transfer device（3）Bottom
Fused salt opening, heat release low temperature salt pump（7）With low temperature salt cellar（9）Path, compressor（18）The preheated device of air of outlet（16）In advance
Pass through high temperature direct contact heat transfer device after heat（3）Heat absorption is directly contacted with hot melt salt, the gas after heat absorption enters turbine（14）Do
Work(generates electricity, the laggard preheater of heat release acting（16）The pre- thermocompressor of hot side entrance（18）The gas of outlet, enters cooler afterwards
（17）Cooling, the gas after cooling enters compressor（18）Re-compress, the low-temperature molten salt after heat release passes through heat release low-temperature molten salt
（7）Into low temperature salt cellar（9）.
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| CN114484892B (en) * | 2022-02-24 | 2023-08-25 | 西安热工研究院有限公司 | System for be used for solar power plant to shut down heat accumulation and heat conversion |
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