CN113899083A - Photo-thermal power generation system comprising giant frame inclined strut structure - Google Patents
Photo-thermal power generation system comprising giant frame inclined strut structure Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
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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
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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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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- 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
- Y02E10/47—Mountings or tracking
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
Abstract
The invention discloses a photo-thermal power generation system comprising a giant frame inclined strut structure, which comprises: the device comprises a photothermal tower, a steam generator, a steam turbine, a hot molten salt tank, a cold molten salt tank, a connecting pipeline and the like. The top of the photo-thermal tower supports a molten salt heat absorber, is connected with a cold and hot molten salt pipeline inside the structure, is connected with a cold molten salt tank, a hot molten salt tank and a steam generator outside the structure, and generates electricity by the work of a steam turbine; the photo-thermal tower is provided with an air inlet layer and an air outlet layer, and is connected with a surface radiator inside the structure, an external heat return system, a circulating water pump and the like to form a surface type indirect air cooling system. To sum up, formed a high-efficient light and heat power generation system, this system has light and heat electricity generation and heat dissipation intercooling function, has solved traditional direct cooling system power consumption big, indirect cooling system area is big, construction cycle is long and initial investment scheduling problem to improve heat absorption structure's corrosion resistance and macroseism security.
Description
Technical Field
The invention relates to a photo-thermal power generation system comprising a giant frame inclined strut structure, and belongs to the technical field of civil engineering and energy and power engineering.
Background
The tower type photo-thermal power generation is characterized in that sunlight is gathered on a heat absorber fixed at the top of a tower by utilizing a fixed eyepiece group, and the heat absorber is used for generating high temperature, heating a working medium to generate superheated steam or high-temperature gas and driving a steam turbine generator set to generate power. Common tower type photo-thermal power generation areas comprise a steam turbine room area, a heat storage and exchange and steam generator area, a cooling facility area, a water treatment and water supply facility area, a sewage and wastewater facility area, a heat absorption tower and the like.
The existing cooling facilities mostly adopt air cooling modes, including direct and indirect air cooling systems. The direct air cooling system adopts a mechanical ventilation mode, consumes a large amount of electric power per se, consumes about 5 percent of electric power generated by photo-thermal, has large noise of a large-diameter axial flow fan, and is greatly influenced by environmental wind. The indirect air cooling system is provided with an air cooling tower, a circulating water system is in a closed state, the air cooling power consumption rate is low, but the occupied area is large, the initial investment is large, the traditional air cooling tower is constructed by adopting a brick structure or reinforced concrete, the construction period is long, the whole construction is difficult, the consumption of brick or reinforced concrete materials is large, the influence on the environment is also large, the corrosion resistance is poor due to the influence of high-temperature steam humidity, and the service cycle is short. Under the action of strong shock, the traditional brick structure or reinforced concrete structure air cooling tower is weak in shock resistance and poor in overall energy consumption capability, after the air cooling tower is damaged by local weak positions, the overall structure is prone to continuously collapse and extremely destructive, and meanwhile surrounding power generation area structures are prone to being influenced.
The heat absorption tower is one of important structures in a tower type photo-thermal power generation area, and for an ultrahigh heat absorption tower (the height is greater than 200m), the top of the tower is connected with a fused salt heat absorber with the load of more than 3000t, so that the requirements on the wind resistance and strong shock safety of the structure are met, the integral structural rigidity is sufficient, and the limit value of the structure displacement of the top of the tower caused by sunlight concentration at the top of the tower is met. Meanwhile, the single-function heat absorption tower has low relative cost performance and low use efficiency.
The prior patent, for example, CN105649900A discloses a system for efficiently reducing station power of a molten salt tower type solar photo-thermal power station, which comprises: heliostat field, infrared bolometer detection module, cold pot, first circulating pump, fused salt ascending pipeline, fused salt entry container, fused salt heat absorber, heat protection, fused salt export container, fused salt descending pipeline, hot pot, second circulating pump, steam generation subassembly, turbine power generation subassembly, indirect air cooling subassembly, cold pot fused salt pipeline, heat absorption tower, main control room, change water subassembly. The air cooling tower of the system is a traditional single structure system (a concrete structure or a steel structure), meanwhile, the heat absorption tower is arranged inside the system, although the occupied area is improved, the safety still cannot be guaranteed, particularly, the shock resistance of the air cooling tower is weak, if the heat absorption tower is arranged inside the system, the safety performance is further reduced, the earthquake response generated by the air cooling tower and the heat absorption tower needs to be considered under the earthquake action, and therefore the safety and the reliability of the whole system are low.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a photo-thermal power generation system comprising a giant frame inclined strut structure, wherein the giant frame inclined strut structure is adopted in the system to replace a traditional reinforced concrete air cooling structure and a heat absorption structure for supporting a molten salt heat absorber, so that a novel efficient, safe and reliable structural scheme is formed, the whole system integrates photo-thermal power generation and heat dissipation and indirect cooling, the problems of large power consumption, large occupied area of an indirect cooling system, long construction period, short service cycle and the like of the traditional direct cooling system are solved, and the corrosion resistance and strong shock safety of the heat absorption structure are improved.
The invention provides the following technical scheme:
a photo-thermal power generation system comprising a giant frame inclined strut structure comprises a photo-thermal tower and a power generation system, wherein the photo-thermal tower and the power generation system are integrated safely and reliably, so that the photo-thermal system generates power efficiently;
the photo-thermal tower adopts a giant frame diagonal bracing structure, and the giant frame diagonal bracing structure comprises a giant frame column, a giant diagonal brace, a cavity truss girder, an equipment layer lower truss girder, an equipment layer upper truss girder, a section steel concrete bottom plate, a section steel concrete top plate and a surface skin;
the power generation system comprises a hot-melt salt pipeline, a cold-melt salt pipeline, a hot-melt salt tank, a cold-melt salt tank, a steam generator and a steam turbine;
the hot-melt salt pipeline and the cold-melt salt pipeline are positioned inside the giant frame diagonal bracing structure, and the hot-melt salt tank and the cold-melt salt tank are positioned outside the giant frame diagonal bracing structure;
the molten salt heat absorber is connected with the hot molten salt tank through a hot molten salt pipeline, and the molten salt heat absorber is connected with the cold molten salt tank through a cold molten salt pipeline; the hot-melt salt tank is connected with the steam generator through a hot-melt salt pump, the steam generator is connected with the steam turbine through a pipeline, and the steam turbine is connected with the inside of the giant frame diagonal bracing structure through a steam pipeline;
the utility model discloses a structure, including huge frame post, cavity truss girder, equipment layer, roof and four huge frame posts, huge frame post sets up in structure bight, cavity truss girder sets up in the structure middle part, connects the huge truss post in bight, the truss girder sets up in the play wind zone top under the equipment layer to support shaped steel concrete bottom plate, the truss girder sets up in the equipment layer top, supports shaped steel concrete roof jointly with four huge frame posts, the fused salt heat absorber sets up in the equipment layer top, with shaped steel concrete roof rigid coupling, surface covering sets up in the structure surface within range below the air-out layer more than the air-inlet layer.
Preferably, the giant frame diagonal bracing structure is provided with four giant frame columns which run through the whole structure, polygonal combined sections with enough rigidity, strength and deformability are adopted, and corner columns on each side face are hyperbolic; the cavity truss girder is provided with 4-5 channels in the middle of the structure, corresponds to the number of the giant diagonal braces, is formed by intersecting the planes of box-shaped steel members and is connected by high-strength bolts.
Preferably, the giant diagonal bracing structure is characterized in that the giant diagonal bracing is arranged in the range from the bottom of the structure to the bottom of the air outlet layer, 4-5 welding box-shaped sections are adopted, concrete is poured in the welded box-shaped sections, the number of the applicable giant diagonal bracing can be calculated and adjusted according to the specific structure height, and the lateral stiffness and the seismic performance of the whole structure are improved.
Preferably, the cross sections of the giant frame diagonal bracing structure, the equipment layer lower truss girder and the equipment layer upper truss girder are the same as the cross sections of the cavity truss girders, four corner columns are respectively connected to the periphery of the giant frame diagonal bracing structure, and the corner columns are connected in a crossed manner inside the giant frame diagonal bracing structure.
Preferably, the huge frame diagonal bracing structure, the section steel concrete bottom plate and the section steel concrete top plate adopt a profiled steel sheet and reinforced concrete slab combined section, and are provided with the shear connectors, wherein the profiled steel sheet is made of weather-resistant structural steel, so that the influence of top water vapor on the structural performance is prevented, and the atmospheric corrosion resistance of the air-out layer top plate is improved.
Preferably, the surface skin of the giant frame diagonal bracing structure can be made of glass fiber reinforced plastic plates supported by purlines, the glass fiber reinforced plastic plates are light in weight, high in strength and long in service life, and the corrosion resistance and the service life of the structure are further improved.
Preferably, the hot-melt salt pipeline and the cold-melt salt pipeline connected with the molten salt heat absorber are arranged inside the giant frame diagonal bracing structure and are connected with the external hot-melt salt tank and the external cold-melt salt tank, when power generation is needed, the hot-melt salt exchanges heat with water and acts on the steam generator to generate hot steam, and the steam turbine connected with the steam generator generates power.
Preferably, a surface radiator of the air cooling system is arranged in the giant frame diagonal bracing structure and is connected with an external regenerative system, a circulating water pump and other devices to jointly form the surface indirect air cooling system, the system can act on steam which is discharged from the tail of the steam turbine and needs to be cooled, the steam is cooled through the surface indirect air cooling system, enters an air inlet layer, is subjected to circulating water heat exchange, is pressurized to the regenerative system by the condensate pump, and circulating water after heat exchange returns to the surface radiator, is pressurized by the circulating water pump after heat exchange with air, and is sent to a steam turbine room for recycling.
The photo-thermal power generation system comprising the giant frame inclined strut structure has the following beneficial effects:
(1) the photo-thermal power generation system comprising the giant frame inclined strut structure is internally provided with a novel efficient, safe and reliable photo-thermal tower structure scheme, integrates photo-thermal power generation and heat dissipation and indirect cooling, solves the problems of large occupied area, high initial investment and the like caused by the respective construction of a traditional indirect cooling system and a heat absorption tower, greatly reduces the construction cost, and has wide application prospect.
(2) The photo-thermal power generation system comprising the giant frame inclined strut structure adopts the indirect air cooling system to replace a mechanical ventilation air cooling system, greatly reduces the power consumed by cooling, does not bring noise pollution of mechanical ventilation, and reduces the power consumption rate and the operation cost of a plant area.
(3) The photo-thermal power generation system comprising the giant frame diagonal bracing structure has the advantages that the whole rigidity of the photo-thermal tower structure is higher, the stability is good, the fused salt heat absorber with large mass at the top can be supported, the lateral movement of the top of the structure under the action of wind load and earthquake load is smaller than that of the traditional reinforced concrete structure, and the limit value of the solar light collection at the top of the tower on the structural displacement of the top of the tower is easily met.
(4) According to the photo-thermal power generation system containing the giant frame diagonal bracing structure, the photo-thermal tower adopts the steel and concrete combined frame column, the giant diagonal bracing is arranged in the frame column, the whole structure is high in rigidity and strong in lateral resistance, under the action of strong shock, energy is consumed by the giant diagonal bracing firstly, certain reset capability is achieved, energy is consumed by the middle cavity truss girder, a plurality of anti-seismic defense lines are formed, and compared with a traditional brick or reinforced concrete structure, the photo-thermal power generation system has higher strong shock safety performance, the influence of the shock of a top large-mass heat absorber on the safety performance of the structure under the action of strong shock is reduced, and the photo-thermal power generation system is suitable for high-intensity earthquake areas.
(5) According to the photo-thermal power generation system containing the giant frame inclined strut structure, the surface skin of the photo-thermal tower is made of glass fiber reinforced plastic plates, the weight is light, the strength is high, the service life is long, the combined bottom plate and the combined top plate are made of the profiled weather-resistant structural steel, the plates can be recycled after the integral structure reaches the service cycle, the environmental protection performance and the corrosion resistance of the engineering are further improved, meanwhile, the environmental sensitivity of the structure is small, the engineering site selection is wider than that of a traditional reinforced concrete structure, the engineering applicability is strong, and the service cycle is long.
Drawings
FIG. 1 is a schematic view of the arrangement of the internal auxiliary structures of the solar-thermal power generation system of the present invention in elevation;
FIG. 2 is a schematic top view of an internal building arrangement of the solar-thermal power generation system of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a schematic cross-sectional view of B-B in fig. 1.
Reference numbers in the figures:
photothermal tower structural member: the large-scale truss structure comprises a large-scale frame column 1, a large-scale inclined strut 2, a cavity truss girder 3, an equipment layer lower truss girder 4, an equipment layer upper truss girder 5, a section steel concrete bottom plate 6 and a section steel concrete top plate 7;
non-structural member: a surface skin 8 and a molten salt heat absorber 9;
special layer: an air outlet layer 10, an equipment layer 11 and an air inlet layer 12;
auxiliary structures and corresponding components: a hot molten salt pipeline 13, a cold molten salt pipeline 14, a hot molten salt tank 15, a cold molten salt tank 16, a steam generator 17, a steam turbine 18 and steam 19 to be cooled.
Detailed Description
The invention is further illustrated by the following examples and figures.
The invention discloses a photo-thermal power generation system comprising a giant frame inclined strut structure, which comprises: the system comprises a light-heat tower adopting a giant frame diagonal bracing structure system, a steam generator, a steam turbine, a hot molten salt tank, a cold molten salt tank, a connecting pipeline and the like. The top of the photo-thermal tower supports a molten salt heat absorber, is connected with a cold and hot molten salt pipeline inside the structure, is connected with a cold molten salt tank, a hot molten salt tank and a steam generator outside the structure, and generates electricity by the work of a steam turbine; the photo-thermal tower is provided with an air inlet layer and an air outlet layer, and is connected with a surface radiator inside the structure, an external heat return system, a circulating water pump and the like to form a surface type indirect air cooling system. To sum up and formed an efficient light and heat power generation system, this system has light and heat electricity generation and heat dissipation intercooling function, and it is big to have solved traditional direct cooling system power consumption, indirect cooling system area is big, construction cycle is long and initial investment scheduling problem, and the light and heat tower corrosion resisting property of this system inside is strong simultaneously, life cycle is long, easily satisfies the limit value of top of the tower sunlight collection to the structural displacement. The method can be widely applied to tower type photo-thermal power generation areas with high humidity and high seismic intensity.
Example 1:
see fig. 1, 2, 3, and 4 for example only.
As shown in fig. 1-2, a photo-thermal power generation system including a giant frame diagonal bracing structure includes a giant frame diagonal bracing structure supporting a molten salt heat absorber (9), a hot-molten salt pipeline (13), a cold-molten salt pipeline (14), a hot-molten salt tank (15), a cold-molten salt tank (16), a steam generator (17), a steam turbine (18), and other connecting pipelines; the hot-melt salt pipeline (13) and the cold-melt salt pipeline (14) inside the giant frame diagonal bracing structure are connected to the molten salt heat absorber (9) and are respectively connected with the hot-melt salt tank (15) and the cold-melt salt tank (16) outside the giant frame diagonal bracing structure, the hot-melt salt tank (15) is connected with the steam generator (17) through a hot salt pump, the steam generator (17) is connected with the steam turbine (18) through a pipeline, and the steam turbine (18) is connected with the inner part of the giant frame diagonal bracing structure through a steam pipeline.
The photo-thermal tower adopting the giant frame diagonal bracing structure system comprises a giant frame column (1), a giant diagonal brace (2), a cavity truss girder (3), an equipment layer lower truss girder (4), an equipment layer upper truss girder (5), a steel reinforced concrete bottom plate (6), a steel reinforced concrete top plate (7) and a surface skin (8), and is provided with a molten salt heat absorber (9); huge frame post (1) sets up in structure bight, cavity truss girder (3) set up in the structure middle part, connect the huge truss post (1) in bight, truss girder (4) set up in play wind bed (10) top under the equipment layer to support shaped steel concrete bottom plate (6), truss girder (5) set up in equipment layer (11) top on the equipment layer, support shaped steel concrete roof (7) jointly with four huge frame post (1), fused salt heat absorber (9) set up in equipment layer (11) top, with shaped steel concrete roof (7) rigid coupling, surface covering (8) set up the structure surface within range below air-out layer (10) more than air inlet layer (12).
The large frame diagonal bracing structure is characterized in that the large frame columns (1) are arranged at the corners of the structure, the number of the large frame columns is four, the large frame columns penetrate through the whole structure, the inner multi-cavity steel pipe concrete combined section is adopted and is pentagonal, the corner columns on each side face are hyperbolic, and the section positions are in retracted distribution;
in the giant frame diagonal bracing structure, the giant diagonal bracing (2) is arranged in the range from the bottom of the structure to the bottom of the air outlet layer (10), 4 channels are arranged by welding box-shaped sections and pouring concrete in the structure, so that the lateral stiffness of the giant frame structure is improved;
in the giant frame diagonal bracing structure, the cavity truss girder (3) is arranged in the middle of the structure and is connected with the corner giant truss column (1), 4 channels are arranged in the middle of the structure and correspond to the number of the giant diagonal bracing, the channel truss girder is formed by intersecting the planes of box-shaped steel members and is connected with the giant diagonal bracing (2) by adopting high-strength bolts to form the first two anti-seismic defense lines of the integral structure together, so that the strong-seismic safety performance of the structure is improved;
in the giant frame diagonal bracing structure, the lower truss girder (4) of the equipment layer is arranged at the top of the air outlet layer (10) and supports the steel reinforced concrete bottom plate (6), the upper truss girder (5) of the equipment layer is arranged at the top of the equipment layer (11) and supports the steel reinforced concrete top plate (7) together with the four giant frame columns (1), the cross section of the steel reinforced concrete top plate is the same as that of the cavity truss girder (3), the periphery of the equipment layer is respectively connected with four corner columns and internally and crossly connected with the giant frame columns (1), the steel reinforced concrete bottom plate (6) and the steel reinforced concrete top plate (7) adopt a profiled steel plate and reinforced concrete plate combined cross section and are provided with a shear connector, wherein the profiled steel plate materials all adopt weather-resistant structural steel materials, the influence of top water vapor on the structural performance is prevented, and the steam corrosion resistance of the air outlet layer top plate is improved;
according to the giant frame diagonal bracing structure, the surface skin (8) is arranged in the range from the air inlet layer (12) to the outer surface of the structure below the air outlet layer (10), and the glass fiber reinforced plastic plate supported by the purlines is adopted, so that the glass fiber reinforced plastic plate is light in weight, high in strength and long in service life, and the corrosion resistance and the service cycle of the structure are further improved;
the molten salt heat absorber (9) is arranged at the top of the equipment layer (11) and fixedly connected with the steel reinforced concrete top plate (7), a hot molten salt pipeline (13) and a cold molten salt pipeline (14) inside the giant frame diagonal structure are connected and respectively connected with a hot molten salt tank (15) and a cold molten salt tank (16) outside the giant frame diagonal structure, a heliostat group reflects solar light energy to the molten salt heat absorber (9) at the top, the temperature of the heat absorber rises to 1000 Fahrenheit after heat absorption, cold molten salt is sent to the molten salt heat absorber (9) from the cold molten salt tank (16) through the cold molten salt pipeline (14) and is heated after energy absorption, the heated molten salt flows into the hot molten salt tank (15) through the hot molten salt pipeline (13) and is stored, the hot molten salt in the hot molten salt tank is sent to the steam generator (17) through the hot salt pump, water is pumped to the steam generator (17), and the molten salt and the water are fully exchanged heat in the steam generator, generating superheated steam, and sending the superheated steam to a steam turbine (18) to do work and generate electricity;
the surface radiator of the air cooling system is arranged in the giant frame inclined strut structure, steam (19) to be cooled is discharged from the tail of the steam turbine (18) and enters the air inlet layer (12), the steam is subjected to circulating water heat exchange and is boosted to the heat regeneration system by the condensate pump, circulating water after heat exchange returns to the surface radiator, and after the heat exchange with air, the circulating water is boosted by the circulating water pump and is sent to the steam turbine room for recycling.
The above are typical examples of the present invention, and the practice of the present invention is not limited thereto.
The above description is only illustrative of the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure should be considered as equivalent effective embodiments, and all the changes or modifications should fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. A photo-thermal power generation system comprising a giant frame inclined strut structure is characterized by comprising a photo-thermal tower and a power generation system which are integrally designed;
the photo-thermal tower adopts a giant frame diagonal bracing structure, and the giant frame diagonal bracing structure comprises a giant frame column (1), a giant diagonal bracing (2), a cavity truss girder (3), an equipment layer lower truss girder (4), an equipment layer upper truss girder (5), a steel reinforced concrete bottom plate (6), a steel reinforced concrete top plate (7) and a surface skin (8);
the power generation system comprises a molten salt heat absorber (9), a hot molten salt pipeline (13), a cold molten salt pipeline (14), a hot molten salt tank (15), a cold molten salt tank (16), a steam generator (17) and a steam turbine (18);
the hot-melt salt pipeline (13) and the cold-melt salt pipeline (14) are positioned inside the giant frame diagonal bracing structure, and the hot-melt salt tank (15) and the cold-melt salt tank (16) are positioned outside the giant frame diagonal bracing structure;
the molten salt heat absorber (9) is connected with the hot molten salt tank (15) through a hot molten salt pipeline (13), and the molten salt heat absorber (9) is connected with the cold molten salt tank (16) through a cold molten salt pipeline (14); the hot-melt salt tank (15) is connected with the steam generator (17) through a hot salt pump, the steam generator (17) is connected with the steam turbine (18) through a pipeline, and the steam turbine (18) is connected with the inner part of the giant frame diagonal bracing structure through a steam pipeline;
the giant frame columns (1) are arranged at the corners of the diagonal bracing structure of the giant frame; the cavity truss girder (3) is arranged in the middle of the giant frame diagonal bracing structure and is connected with the corner giant frame column (1); the equipment layer lower truss girder (4) is arranged at the top of the air outlet layer (10) and supports the steel reinforced concrete bottom plate (6), and the equipment layer upper truss girder (5) is arranged at the top of the equipment layer (11) and supports the steel reinforced concrete top plate (7) together with the four giant frame columns (1); the molten salt heat absorber (9) is arranged at the top of the equipment layer (11) and fixedly connected with the steel reinforced concrete top plate (7); the surface skin (8) is arranged in the range from the outer surface of the giant frame diagonal bracing structure above the air inlet layer (12) to below the air outlet layer (10).
2. The photo-thermal power generation system comprising the giant frame diagonal bracing structure according to claim 1, wherein the giant frame diagonal bracing structure is provided with four giant frame columns (1), the giant frame columns penetrate through the whole structure and adopt a polygonal combined section with enough rigidity, strength and deformability, corner columns on each side face are in a hyperbolic shape, and the section positions are in a retraction type distribution; the cavity truss girder (3) is provided with 4-5 channels in the middle of the structure, is formed by intersecting box-shaped steel member planes and is connected by high-strength bolts.
3. The photo-thermal power generation system comprising the giant frame diagonal bracing structure as claimed in claim 1, wherein the giant frame diagonal bracing structure is arranged from the bottom of the structure to the bottom of the air outlet layer (10), welded box-shaped cross sections are adopted, concrete is poured in the welded box-shaped cross sections, 4-5 channels are arranged, and the number of the applicable giant diagonal bracing is calculated and adjusted according to the specific structure height.
4. The photothermal power generation system comprising the giant frame diagonal bracing structure according to claim 1, wherein the giant frame diagonal bracing structure, the top equipment level lower truss girder (4) and the equipment level upper truss girder (5) have the same cross section as the cavity truss girder (3), and are connected with four corner posts at the periphery and at the inside by cross connection.
5. The photothermal power generation system comprising the giant frame diagonal bracing structure according to claim 1, wherein the giant frame diagonal bracing structure, the inner steel reinforced concrete bottom plate (6) and the steel reinforced concrete top plate (7) are made of profiled steel plate and reinforced concrete plate combined section, and provided with shear connectors, wherein the profiled steel plate material is made of weather-resistant structural steel.
6. The photothermal power generation system comprising a giant frame diagonal bracing structure according to claim 1, wherein the surface skin (8) of the giant frame diagonal bracing structure is made of glass fiber reinforced plastic plate supported by purlins.
7. The photo-thermal power generation system comprising the giant frame diagonal bracing structure according to claim 1, wherein the giant frame diagonal bracing structure is internally provided with a surface radiator of an air cooling system, and is connected with an external heat regeneration system and a circulating water pump device to form a surface type indirect air cooling system.
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Application publication date: 20220107 |