33 results about "Solar disc" patented technology

The invention discloses an energy storage method and device for a solar disc type Stirling system. A Stirling heat collector is filled with metallic oxide. Focused solar energy enters the heat collector. Part of energy is transmitted to a heat head of a Stirling engine for acting. Part of energy is used for increasing the temperature of the metallic oxide. When solar energy is sufficient, and the temperature rises to the reaction temperature, the metallic oxide starts to decompose and suck affluent heat. When solar energy lacks, and the temperature in the heat collector starts to drop, the metallic oxide and oxygen in a cavity of the heat collector react, and heat is released and supplied to the Stirling engine; furthermore, the heat transfer rate of the Stirling heat head is increased by the adoption of the metallic oxide, and a heat pipe is additionally arranged between the metallic oxide and the Stirling heat head. By means of the energy storage method and device, the shortcomings of the electricity generation power fluctuation even halt caused by instable sunlight are mitigated, the output electricity quality is improved, impact on a power grid is reduced, and system efficiency is improved.

The invention relates to a heat storage temperature control device of a solar disc-type Sterling engine, wherein the device is cylindrical integrally; one end of the device is provided with a solar heat collecting inner cavity, and the other end of the device is provided with a Sterling engine heat end preserved inner cavity; the middle of the device is provided with a seal box body; the device is internally provided with a heat storage material and a heat exchange guide tube; an inorganic salt high-temperature phase change material is used as the heat storage material; a high-temperature heat fluid for heat exchange acts as a heat conduction medium; heat is exchanged through the heat exchange guide tube in the device, the device is externally provided with a temperature preservation layer. One end of the device is used for absorbing heat, and the other end of the device is connected with the Sterling engine heat end; and the heat storage material and the heat exchange guide tube in the seal box body are utilized to control the temperature. Compared with the prior art, the heat storage temperature control device of the solar disc-type Sterling engine provided by the invention has the advantages that the operation temperature of the solar Sterling engine can be controlled to be constant relatively so as to improve the solar disc-type heat power generation efficiency.

The invention discloses a high-temperature sodium heat pipe heat collector for a solar disc type thermal power generation system, which is used in the solar disc type thermal power generation system. Serving as a solar heat collector of a Stirling engine, the high-temperature sodium heat pipe heat collector plays a role in quickly transferring high-temperature heat. The heat collector has a gravity backflow type heat pipe structure, wherein the internal working medium is liquid sodium-sodium vapor. When the heat collector works, the liquid sodium packaged in a vaccumized heat pipe evaporation section absorbs focused high-temperature solar energy and is then quickly evaporated into sodium vapor. In the process, a large amount of latent heat is absorbed. The sodium vapor is condensed on the outer wall of a heat absorber tube of the Stirling engine positioned on the heat pipe condensation section, quickly releases the latent heat and becomes liquid; the liquid flows back to a liquid sodium pool along the shell of the heat collector under the action of gravity; a phase-change heat-transfer process is finished; and the process is reciprocated, and the focused solar energy is quickly transferred to the heat absorber of the Stirling engine.

The invention discloses a fast focusing method for installation of a mirror unit of a solar disc condenser. The fast focusing method comprises the implementation steps that (1) databases with the spatial position errors and focusing spot features of the mirror unit in one-to-one correspondence are established; (2) the condenser is in the state of tracking the sun, an image acquisition system obtains a focusing spot image condensed on a focal plane receiving target independently by the mirror unit to be focused, and the focusing spot image is treated for obtaining the focusing spot features; and (3) the focusing spot features obtained in the step (2) are compared with the databases with the identical mirror unit number established in the step (1) so as to obtain the corresponding mirror unit spatial position errors matched with the focusing spot features and adjustment lengths of ball joint bolts of the mirror unit, so that quantitative adjustment for the mirror unit is conducted. The mirror unit is easy to focus, the rotation error of the mirror unit can be eliminated in a one-step mode, and the fast focusing method for the installation of the mirror unit of the solar disc condenser can effectively adapt to the efficient and low-cost focusing needs of solar focusing systems of our country.

The invention discloses a method for testing condensation performance of a solar disc type condenser. The optical concentrating ratio distribution is determined by utilizing a method for measuring heat-flow density distribution on a spotlighting focal plane of the disc type condenser and local solar normal direct irradiance for many times in a timesharing manner. A testing device by adopting the testing method disclosed by the invention is composed of a rotary substrate (1), a heat-flow sensor (2), a fixed frame (3) and a bolt pin (4). The rotary substrate (1) is circular. A plurality of heat-flow sensors (2) are installed on the rotary substrate (1). The connection line of the central points of the heat-flow sensors (2) is superposed with a certain diameter of the rotary substrate (1). The rotary substrate (1) is fixedly connected with the fixed frame (3) through the bolt pin (4). The installation angle of the rotary substrate (1) on the fixed frame (3) can be adjusted. According to the method and the device disclosed by the invention, the condensation performance of the solar disc type condenser is tested; the optical condensing ratio of the solar disc type condenser is evaluated; and the heat-flow density distribution is provided for the use process.

The invention discloses a method for predicting and maintaining condensation performance of a solar disc type condensation system, and the method comprises the following steps: 1), building a finite element model of the disc type condensation system, and calculating the optical information of a disc type condenser under a non-bearing condition without an optical error; 2) calculating optical parameters of each plane infinitesimal grid of a condenser reflecting mirror surface when self-weight and wind pressure load boundary conditions are applied; 3) predicting the focusing energy flow distribution and the optical performance of the disc type condensation system under the action of the load by adopting a ray tracing method; 4) fitting to obtain a function model of the tracking error angle value and the centroid position of the focusing light spot; 5) determining the centroid position of the focusing light spot according to the operation condition, and reversely solving the output cornererror value of the double-axis tracking device; and rotating an output shaft of the double-shaft tracking device by a corresponding angle, so that the condensation performance of the disc type condensation system is kept. The method is easy to implement, the light condensation performance of the disc type light condensation system under the bearing working condition can be predicted, energy flowdistribution is kept, and the design of the disc type system is guided.

The invention discloses a solar orientation and sunrise and sunset display mechanism of a watch. The mechanism comprises a driving part, a command control part and a function display part. The driving part is a power input end and drives the command control part, and solar orientation and sunrise and sunset are displayed by the function display part. The beneficial effects are as follows: visual movements of the sun are displayed effectively since a horizon indicator panel moves relative to a sun disc, and the time of sunrise and sunset is automatically adjusted along with changes of dates; the mechanism is simple and reliable, is relatively low in machining difficulty, and exhibits good universality; the entire mechanism is relatively independent, occupies little space, can be adjusted and calibrated independently, and can be mounted and dismounted as a whole; a mechanism module can be loaded to a perpetual calendar movement, is also suitable for a non-perpetual calendar movement, is greatly improved in adaptation, and becomes a function module quite high in universality; and in particular, components of the mechanism can be correspondingly replaced on the basis of different latitudes where users are located to meet usage demands of different latitude regions in the world, and exhibit good interchangeability.

The invention provides a first twisting, stranding and second twisting all-in-one machine for ceramic fibers. The machine comprises a main body support; a sun disc and multiple planet wheels mounted on the main body support; a plurality of yarn releasing machines coaxial with the planet wheels and fixed on the sun disc; a plurality of first yarn guide wheels arranged above the yarn releasing machines; and second yarn guide wheels arranged above the plurality of first yarn guide wheels. The ceramic fibers on the yarn releasing machines pass through the outer sides of the first yarn guide wheels and then are introduced into the second yarn guide wheels, so that the multiple strands of ceramic fibers are stranded at the second yarn guide wheels; and first twisting and second twisting are realized through rotation of the planet wheels and revolution of the sun disc. The machine is simple in structure, reasonable in design, easy and convenient to operate and capable of achieving first twisting, stranding and second twisting of the multiple strands of ceramic fibers at a time.

The invention provides an in-orbit autonomous earth shadow calculation method and system for a geostationary orbit satellite. The method comprises the steps that S1, the radius of an earth shadow area disc is calculated according to a solar disc field angle and an earth disc field angle; s2, according to the longitude of the sub-satellite point at the fixed-point position of the satellite, calculating the accumulated second number of the midnight moment of the satellite relative to the Greenwich time; s3, calculating the solar altitude at the midnight moment according to the accumulated second number of the midnight moment of the satellite relative to the Greenwich time; s4, according to the radius of the disc in the earth shadow area and the solar altitude at the midnight, calculating the solar crossing angle in the earth shadow period; and S5, according to the angle crossed by the sun during the earth shadow period, calculating the earth shadow duration of the satellite and the time when the satellite enters and exits the shadow, and judging the earth shadow area. The method does not depend on ground control processing, earth shadow judgment is autonomously completed in orbit, and satellite energy crisis and safety problems caused by underreporting of a ground system are avoided.

The invention discloses a light spot energy measuring system and a method suitable for solar disc light condensation. The system comprises a cavity heat absorber; an inner cavity of the cavity heat absorber is a light absorbing area provided with a cooling water runner; an opening capable of emitting incident light into the inner cavity is formed in the cavity of the cavity heat absorber; a water inlet of the cooling water runner is connected with a cooling water supply system through a pipe; a water outlet of the cooling water runner is connected with a cooling water recovery system through a pipe; the cooling water supply system is provided with a first pressure measuring element, a temperature measuring element and a mass and flow measuring device for measuring supplied water; and the cooling water recovery system is provided with a second pressure measuring element and a temperature measuring element for measuring recovered water. The system fills the blank of the field; and no matter heat utilization of a disc light condenser or solar energy, the energy values of light spots are key parameters.

The invention relates to a manufacturing method for a solar disc type system with a heat storage device. By means of the technical scheme of the method, the optimal position connecting relation among a base, an inclined heat collecting pillar, an energy storage box and a Stirling engine is given out, the problem that in the prior art, a disc frame is top-heavy is solved, and the load of the disc frame is also greatly reduced. Meanwhile, a certain inclination angle exists between a center shaft of the base and the heat collecting pillar relative to the center shaft of the base, so that heat can be better collected by a heat collector at the top end of the heat collecting pillar, and the heat collecting efficiency of the whole system is improved. The Stirling engine is arranged on one side of a heat storage box so that the heat dissipating problem of the Stirling engine can be well solved. In addition, a graphite layer serves as a material for heat collecting and conducting, sodium sulfate for capacity expanding and quantity increasing serves as an inorganic matter phase-change heat storage material, and the Stirling engine can be in a stable working state all the time.

The invention relates to a solar disc-type air turbine power generation system, which comprises a double-shaft tracking solar disc-type focusing reflection mirror surface system, an air compressor, a solar absorber, an air turbine and a generator, and is characterized in that one end of the solar absorber is connected with the air compressor; the other end is connected with the air turbine; an air turbine shaft is connected with a generator shaft; a thermal power cycle adopts an ideal turbine motor constant pressure heating cycle; air is used as a working medium; the air passes the air compressor to generate high-pressure air to be provided for the solar absorber; the solar absorber absorbs solar energy to complete the constant pressure heating; the high-pressure air is supplied for the air turbine to produce mechanical energy which is used for driving the generator to generate electric energy. The solar disc-type air turbine power generation system has the advantages that the working medium is air, no hydrogen and water are used as the working medium, the solar constant pressure heating cycle mode is adopted, and the air turbine is longer in service life than a piston type generator, small in vibration, simple in lubrication, higher in rotation speed, and smaller is size; as the air is adopted as the working medium, the water resource lack restriction of a desert photo-thermal CSP (concentrating solar power) power station does not exist.

The invention discloses a disc type power generation device based on a V-shaped heat absorption wall cavity type solar absorber. The device comprises a light-heat conversion unit and a supercritical CO2 brayton cycle power generation system; the light-heat conversion unit comprises a V-shaped heat absorption wall cavity type solar absorber, collecting lenses and CO2 pipeline, wherein a plurality of collecting lenses are uniformly arranged on the periphery of the V-shaped heat absorption wall cavity type solar energy absorber, and the V-shaped heat absorption wall cavity type solar energy absorber is connected to the supercritical CO2 brayton cycle power generation system through the CO2 pipeline; the V-shaped heat absorption wall cavity type solar energy absorber is internally provided with a V-shaped heat absorption cavity assembly, wherein the V-shaped heat absorption cavity assembly comprises a plurality of heat exchange layers, an included angle alpha is formed between every two adjacent heat exchange layers, V-shaped closed spaces are arranged as heat preservation chambers or heat absorption cavities, the heat preservation chambers and the heat absorption chambers are alternately arranged, and an optical incident window directly faces the heat absorption chamber; and a heat exchange pipe is embedded into the heat exchange layers. The device has the advantages of being highin thermoelectric conversion efficiency, high in power generation efficiency, low in cost and the like. The invention belongs to the technical field of solar disc type power generation.

The invention relates to a wind-solar disc generator and overcomes the problem that both wind power generation and solar operation are single. The two natural energies, the wind energy and the solar energy, are subjected to complementary power generation by making full use of features of the wind energy and solar energy; according to the maglev technology and the principle of flying disc, resource utilization benefit is maximized. The wind-solar disc generator has the advantages of safety and reliability, no danger of exhausting, no need for fuel consumption, no noise, no pollution and emission, no limitation on resource distribution region, lower generation cost and higher economic benefit; the wind-solar disc generator is applicable to power generation in various regions.

The invention discloses a solar disc-type condensation frequency division utilization system, which comprises a condensation unit, a solar conversion unit and a mobile unit, and is characterized in that sunlight irradiates a reflector, after the sunlight is reflected by the reflector, reflected light rays irradiate a frequency divider, and a part of light rays distributed by the frequency divider irradiate a photovoltaic battery assembly, so that light energy is converted into electric energy; the other part of light distributed by the frequency divider is emitted to the photo-thermal chemical reactor, a reaction is carried out in the photo-thermal chemical reactor, and fuel is generated and stored; meanwhile, the mobile unit provides stable support for the light condensation unit and the solar energy conversion unit, and the azimuth angle tracker and the elevation angle tracker can drive the light condensation unit and the solar energy conversion unit to move along with the change of the position of the sun, so that the normal movement of the system is ensured. Solar energy is converted into electric energy through disc type condensation, meanwhile, fuel is generated through the photo-thermal chemical reactor, the solar energy grade is improved, and the solar energy utilization efficiency is improved.