A kind of solar thermal power plants and its method for electric generation using solar energy
The present invention relates to a kind of electricity-generating method and generating equipment, particularly a kind of solar thermal power plants and its solar energy
As the development and progress of scientific level, the depletion rate of non-renewable resources are also increasingly faster, people start to seek
Seek the using method to Renewable resource.Solar energy is inexhaustible regenerative resource, in Fossil fuel year by year
Today of reduction, international energy situation sternness increasingly, it is to realize energy supply diversification, ensure energy peace to develop solar energy
One of full important channel.
At present scientist has now been developed a kind of equipment of utilization solar electrical energy generation, this equipment include condenser mirror,
Mirror support, day by day device and heat collector, are reflexed to sunlight positioned at focusing mirror by the condenser mirror of arc
On heat collector on line, heat collector absorbs the heat of sunlight, then constantly heats the conduction oil in heat collector, heated
Conduction oil is transported to again generating equipment for generating electricity.The utilization rate of this generating equipment solar energy is relatively low, equipment construction cost
It is very high, and floor space is very big.
The content of the invention
It is an object of the present invention to provide a kind of solar thermal power plants and its method for electric generation using solar energy, it has too
It is positive can utilization rate is high, loss less with the advantage of equipment manufacturing cost advantage of lower cost.
Technical scheme：A kind of solar thermal power plants, including Jing Chang, secondary condenser, optically focused tower and send out
Electric equipment, located at the center of Jing Chang, the top of optically focused tower is by secondary condenser fixed mount and secondary condenser for optically focused tower
Connection, optically focused tower bottom is provided with heat extractor, and heat extractor is connected with generating equipment；Secondary condenser for plane mirror be spliced it is double
Convex lens under curve.
In aforesaid solar thermal power plants, the center of secondary condenser is provided with a through hole, the thickness of secondary condenser
Du Cong centers are gradually reduced to edge.
In aforesaid solar thermal power plants, the distribution mode of plane mirror is uniformly distributed for latticed.
In aforesaid solar thermal power plants, Jing Chang is made up of the condensing reflection device of more than 1, condensing reflection device
It is distributed in a ring.
In aforesaid solar thermal power plants, condensing reflection device include light gathering reflector mirror support, condenser mirror and
Day by day device, located at the top of light gathering reflector mirror support, day by day device is located at light gathering reflector mirror support and optically focused for condenser mirror
Between reflecting mirror.
In aforesaid solar thermal power plants, generating equipment includes low-temperature heat accumulating device, high-temperature heat accumulation device and steam turbine, inhales
Hot device is connected with low-temperature heat accumulating device and high-temperature heat accumulation device, and low-temperature heat accumulating device and high-temperature heat accumulation device are connected with steam generator, steam
Generator is connected with steam turbine, and steam turbine is connected with generating set；Cold salt pump, high temperature are provided between heat extractor and low-temperature heat accumulating device
Hot salt pump is provided between thermophore and steam generator, feed pump is provided between steam generator and steam turbine.
A kind of method generated electricity using aforesaid solar thermal power plants, sunlight is filled in the light gathering reflector of Jing Chang
Put, condensing reflection device reflexes to light in the secondary condenser of optically focused top of tower, and secondary condenser is again light
To in the heat extractor on ground, light is converted into the available energy that generates electricity to reflecting focal by heat extractor again, then by energy
Amount passes to generating equipment and is generated electricity.
In aforesaid method for electric generation using solar energy, secondary condenser is convex lens under the hyperbola being spliced by plane mirror.
In aforesaid method for electric generation using solar energy, heat extractor is located at the underface of secondary condenser.
Compared with prior art, because solar energy belongs to Renewable resource, the present invention can be effective using solar electrical energy generation
The consumption of non-renewable resources is reduced, and can solve the problem that traditional thermal power plant problem serious to air pollution.Due to this equipment
In the hyperbola that is spliced using plane mirror of secondary condenser under convex lens, reflex to the light on ground than more uniform, will not
There is the phenomenon of local light intensity, solar energy can be made full use of.And the present invention is due to simple structure, in solving prior art
Solar power plant construction cost is high, the big shortcoming of floor space.
Due to the present invention by heat extractor located at the bottom of optically focused tower, it is not only able to improve the photothermal conversion efficiency of heat extractor,
But also can reduce the installation cost of beam condensing unit and heat sink.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structural representation of secondary condenser and optically focused tower；
Fig. 3 is the structural representation of secondary condenser；
Fig. 4 is the structural representation of condensing reflection device；
Fig. 5 is the structural representation of generating equipment.
Labelling in accompanying drawing for：1- Jing Chang, 2- secondary condenser, 3- optically focused towers, 4- generating equipments, 5- heat extractors, 6- bis-
Secondary condenser fixed mount, 7- condensing reflection devices, 8- plane mirrors, 9- through holes, 10- low-temperature heat accumulating devices, 11- high-temperature heat accumulation devices, 12-
Steam generator, the hot salt pumps of 13-, 14- steam turbines, the cold salt pumps of 15-, 16- feed pumps, 17- generating sets, 18- condenser mirrors
Support, 19- condenser mirrors, 20- devices day by day.
With reference to the accompanying drawings and examples the present invention is further illustrated.
Embodiments of the invention：As depicted in figs. 1 and 2, a kind of solar thermal power plants, including mirror field 1, secondary condensation
Device 2, optically focused tower 3 and generating equipment 4, optically focused tower 3 passes through secondary condenser located at the center of mirror field 1, the top of optically focused tower 3
Fixed mount 6 is connected with secondary condenser 2, and the bottom of optically focused tower 3 is provided with heat extractor 5, and heat extractor 5 is connected with generating equipment 4；It is secondary poly-
Light device 2 is convex lens under the hyperbola that plane mirror 8 is spliced.
As shown in figure 3, the center of secondary condenser 2 is provided with a through hole 9, the thickness of secondary condenser 2 is from center to side
Edge is gradually reduced.The distribution mode of plane mirror 8 is uniformly distributed for latticed.
Mirror field 1 is made up of the condensing reflection device 7 of more than 1, and condensing reflection device 7 is distributed in a ring.
As shown in figure 4, condensing reflection device 7 includes light gathering reflector mirror support 18, condenser mirror 19 and device 20 day by day,
, located at the top of light gathering reflector mirror support 18, day by day device 20 is anti-located at light gathering reflector mirror support 18 and optically focused for condenser mirror 19
Penetrate between mirror 19.
As shown in figure 5, generating equipment 4 include low-temperature heat accumulating device 10, high-temperature heat accumulation device 11 and steam turbine 14, heat extractor 5 with
Low-temperature heat accumulating device 10 and high-temperature heat accumulation device 11 connect, and low-temperature heat accumulating device 10 and high-temperature heat accumulation device 11 are connected with steam generator 12,
Steam generator 12 is connected with steam turbine 14, and steam turbine 14 is connected with generating set 17；Between heat extractor 5 and low-temperature heat accumulating device 10
Cold salt pump 15 is provided with, hot salt pump 13, steam generator 12 and steam turbine are provided between high-temperature heat accumulation device 11 and steam generator 12
Feed pump 16 is provided between 14.
A kind of method generated electricity using aforementioned solar thermal power plants, condensing reflection device of the sunlight in Jing Chang
On, condensing reflection device reflexes to light in the secondary condenser of optically focused top of tower, and secondary condenser is anti-light again
In penetrating the heat extractor converged on ground, light is converted into the available energy that generates electricity by heat extractor again, then by energy
Pass to generating equipment to be generated electricity.
The operation principle of the present invention：Sunlight is radiated in mirror field 1, and the condensing reflection device 7 in mirror field 1 reflects sunlight
To on the reflecting surface of secondary condenser 2, in the heat extractor 5 of the reflecting focal of sunlight Jing secondary condensers 2 to the bottom of optically focused tower 3,
Generating available energy is formed in heat extractor 5, low temperature heat-carrying agent enters into heat absorption from the cold salt pumps 15 of Jing in low-temperature heat accumulating device 10
In device 5, absorb solar energy and become high temperature heat-carrying agent, in entering into high-temperature heat accumulation device 11；High temperature heat-carrying agent is from high-temperature heat accumulation
The hot salt pumps 13 of Jing are entered in steam bleed steam 12 in device 11, are released energy and are changed into low temperature heat-carrying agent, and low temperature heat-carrying agent is again
In returning to low-temperature heat accumulating device 10.The solidifying water Jing feed pumps 16 of the exhaust steam that the afterbody of steam turbine 14 is discharged enter into steam bleed steam 12
In, condensed water absorbs heat in steam generator 12 and is changed into the available steam that generates electricity, and in entering into generating set 17, completes to generate electricity