CN101629766A - Multi-paraboloid focusing device capable of tracking solar rays - Google Patents

Multi-paraboloid focusing device capable of tracking solar rays Download PDF

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Publication number
CN101629766A
CN101629766A CN200910302533A CN200910302533A CN101629766A CN 101629766 A CN101629766 A CN 101629766A CN 200910302533 A CN200910302533 A CN 200910302533A CN 200910302533 A CN200910302533 A CN 200910302533A CN 101629766 A CN101629766 A CN 101629766A
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light reflection
light
paraboloid
plate
sunray
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CN200910302533A
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CN101629766B (en
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肖立峰
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/47Mountings or tracking

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The invention relates to a multi-paraboloid focusing device capable of tracking solar rays. The device comprises a plurality of rotatable light-reflecting parabolic panels aligned in parallel along an axis plane; a co-focal axis fixed small light-reflecting elliptical panel in a size smaller than the size of the light-reflecting parabolic panel is arranged in an adjacent region of a focal axis of each light-reflecting parabolic panel; one focal axis of each small light-reflecting elliptical panel respectively coincides with a focal axis A of a corresponding light-reflecting parabolic panel, and the other focal axes B of a plurality of small light-reflecting elliptical panels coincide; a photothermal conversion tube in parallel to the focal axis of each light-reflecting parabolic panel is arranged on the focal axis B; a plurality of light-reflecting parabolic panels are connected with a solar ray tracking device and are controlled to rotate round the focal axis of the light-reflecting parabolic panels so that the axis plane is constantly parallel to the solar rays. The invention does not need complicated pipelines and high towers, can focus the light energy of a plurality of light-reflecting parabolic panels to focus solar energy in a large range, thereby having low cost, high photothermal conversion efficiency and easy implementation.

Description

Can follow the tracks of the multi-paraboloid focusing device of sunray
[technical field]
The present invention relates to solar energy equipment, particularly relate to a kind of multi-paraboloid focusing device of following the tracks of sunray.
[background technology]
As everyone knows, solar energy is inexhaustible, but people still fail the extensive important energy source of utilizing.Along with the minimizing of fossil energy and rising steadily of price such as coal, oil, natural gases, the mankind directly obtain energy and have become more and more important from solar energy.At present existing various solar utilizing equipment are used, as opto-electronic conversion and photo-thermal conversion equipment etc.In relatively large solar concentrating device, a kind of is the slot type system, and another kind is a tower system.Wherein, the slot type system is made of a plurality of slot type light reflection paraboloid plates, and its defective is to be equipped with the photo-thermal crossover connection on each slot type light reflection paraboloid plate focus, and must connect by complicated pipe network, so the cost of manufacture height, poor reliability, photo-thermal conversion efficiency is low.Tower system is to be made of a high tower and a huge light reflection paraboloid plate, this light reflection paraboloid plate can rotate with sunray, with solar light focusing to the photothermal conversion device of cat head, its defective is as will obtain large-area solar energy the time, its solid geometry enormous size, complex structure, the cost height.
[summary of the invention]
The present invention is intended to solve the deficiencies in the prior art, and a kind of complicated pipelines that need not is provided, and need not high tower, a plurality of sunlight that shine the light reflection paraboloid plate can be focused on, thereby cost is low, photo-thermal conversion efficiency height, the multi-paraboloid focusing device of followed the tracks of of sunray easy to implement.
For achieving the above object, the invention provides a kind of multi-paraboloid focusing device of following the tracks of sunray, this device comprises a plurality of rotatable light reflection paraboloid plates that are arranged in parallel by axial plane, the fixed size that is provided with a confocal axle in the adjacent domain of the focal axis of each light reflection paraboloid plate reflects oval panel less than the little light of light reflection paraboloid plate, the focal axis A that each little light reflects each corresponding with it respectively light reflection paraboloid plate of a focal axis of oval panel overlaps, and another focal axis B that a plurality of little light reflect oval panel overlaps.
Little light reflects oval panel and is of a size of 1/10th to a thirtieth of light reflection paraboloid board size.
Be provided with the photo-thermal crossover connection parallel with the focal axis of light reflection paraboloid plate at described focal axis B place.
A plurality of light reflection paraboloid plates link to each other with the sunray tracking means, and the focal axis A around the light reflection paraboloid plate rotates under the control of sunray tracking means, makes its axial plane parallel with sunray all the time.
A plurality of light reflection paraboloid plates are arranged along benchmark installed surface C, and the inclination angle between benchmark installed surface C and the horizontal plane D is α 1, α 1Be the latitude of solar-energy light collector position, described benchmark installed surface C northwards tilts in the Southern Hemisphere, then south dip on the Northern Hemisphere.
The focal axis A of each the light reflection paraboloid plate that is provided with along benchmark installed surface C is along the east-west direction setting, and parallel with benchmark installed surface C.
Between each light reflection paraboloid plate of benchmark installed surface C setting, pass through rod hinge connection, and one of them light reflection paraboloid plate is provided with a driving mechanism, this driving mechanism links to each other with the sunray tracking means, this driving mechanism drives one of them light reflection paraboloid plate rotation according to the control signal of sunray tracking means, and drive other light reflection paraboloid plate by connecting rod and rotate synchronously, make its axial plane parallel with sunray all the time.
This device also is provided with one and surrounds the tabular casing that forms by base plate, the transparent roof panels parallel with base plate and with described base plate two end plates, the biside plate vertical with top board, wherein, the inner surface of two end plates is a reflective surface, a plurality of light reflection paraboloid plates and little light reflect oval panel and are contained in the casing, and the two ends that little light reflects oval panel are fixed on the end plate.
The a plurality of light reflection paraboloid plates that are provided with along benchmark installed surface C rotate around the coaxial line rotating shaft at two ends separately respectively, the center line of this rotating shaft overlaps with described focal axis A, rotating shaft is connected on the end plate at light reflection paraboloid plate two ends rotationally, and a plurality of light reflection paraboloid plates respectively are connected in the rotating shaft by the support bar at two ends.
Driving mechanism comprises worm gear tooth bar, worm screw, stepper motor, and wherein, the worm gear tooth bar is fixed on the support bar, and stepper motor is fixed on the base plate, and worm screw is connected on the output shaft of stepper motor.
Contribution of the present invention is that it has effectively overcome the defective of traditional slot type system and tower system.Because being provided with the much smaller little light of the size relative with the light reflection paraboloid plate reflects oval panel, the luminous energy of a plurality of light reflection paraboloid plates can be focused on, can realize the large tracts of land solar light focusing, and need not complicated pipelines and high tower, thereby greatly reduce cost of manufacture.And owing to realized the large tracts of land solar light focusing with a plurality of little parabolas, thereby improved photo-thermal or photoelectric transformation efficiency.Because device of the present invention is a platy structure, thereby can be provided with flexibly according to different landform, therefore manufacturing and easy for installation, easy to implement.All be sealed in plate body inside because of light reflection surface and rotatable parts again, be not subject to the infringement of environmental factor, thereby the life-span be long, maintenance workload is few.
[description of drawings]
Fig. 1 is a structure perspective view of the present invention.
Fig. 2 is an overall structure schematic diagram of the present invention.
Fig. 3 is a light path principle figure of the present invention, and wherein, Fig. 3 A is a unit light path schematic diagram, and Fig. 3 B is the H portion enlarged drawing of Fig. 3 A.
Fig. 4 is a partial enlarged drawing, and wherein, Fig. 4 A is the F portion enlarged drawing of Fig. 1, and Fig. 4 B is the G portion enlarged drawing of Fig. 4 A.
[specific embodiment]
Consult Fig. 1, Fig. 2, the multi-paraboloid focusing device of following the tracks of sunray of the present invention comprises that a plurality of light reflection paraboloid plates 10, corresponding with it a plurality of little light reflect oval panel 20, photo-thermal crossover connection 30, connecting rod 40, driving mechanism 50 and casing 100.
Described light reflection paraboloid plate 10 is plate bodys of the light reflection paraboloid shape of being made by glass, lucite or plastics, and its length can infinitely prolong, and width is then determined according to employed occasion.One of them side at the light reflection paraboloid plate is coated with reflectorized material, is formed for the mirror surface of reflected sunlight.Among Fig. 1, Fig. 2, a plurality of light reflection paraboloid plates 10 are arranged along benchmark installed surface C, and the length of light reflection paraboloid plate 10 can infinitely prolong as required.In the present embodiment, a plurality of light reflection paraboloid plates 10 are arranged along benchmark installed surface C respectively, and the axial plane of each light reflection paraboloid plate 10 parallels.Described benchmark installed surface C angle with respect to the horizontal plane is different.Specifically, the inclination angle between benchmark installed surface C and the horizontal plane D is α 1, α 1Be the latitude of solar-energy light collector position, described benchmark installed surface C northwards tilts in the Southern Hemisphere, then south dip on the Northern Hemisphere.The focal axis A of each the light reflection paraboloid plate 10 that is provided with along said reference installed surface C is along the east-west direction setting, and parallel with benchmark installed surface C.Described light reflection paraboloid plate 10 is can be by rotating the movable light reflection paraboloid plate of following the tracks of sunray, and its rotational structure will be described below.
Shown in Fig. 4 A, Fig. 4 B, be provided with a little light in the adjacent domain of the focal axis A of each light reflection paraboloid plate 10 (imaginary axis) and reflect oval panel 20, its length can infinitely prolong, and width is then determined according to the employed occasion and the accuracy of manufacture.One of them side of reflecting oval panel 20 at little light is coated with reflectorized material, is formed for the mirror surface of reflected sunlight.It is much smaller than light reflection paraboloid plate 10 that this little light reflects oval panel 20 sizes, and its size only is 1/10th to a thirtieth of light reflection paraboloid plate 10 sizes.This little light reflects oval panel 20 and reflects oval panel for fixed light, each little light reflects oval panel 20 and respectively has two focal axis, the focal axis A of each light reflection paraboloid plate 10 that one of them focal axis is corresponding with it respectively overlaps, another focal axis B that a plurality of little light reflect oval panel overlaps, and the light that promptly a plurality of little light reflect oval panel reflection all focuses on same focal axis B.Shown in Fig. 2 and Fig. 3 A, Fig. 3 B, because reflecting a focal axis of oval panel 20, each little light overlaps with the focal axis A (imaginary axis) of light reflection paraboloid plate 10, make light reflection paraboloid plate 10 that sunshine is reflexed to little light through focal axis A and reflect on the light reflection surface of oval panel 20 that each little light reflects oval panel 20 and sunshine reflexed to photo-thermal crossover connection 30 again.As Fig. 2, another focal axis B that reflects oval panel 20 at described little light is provided with the photo-thermal crossover connection 30 parallel with the focal axis of light reflection paraboloid plate 10.This photo-thermal crossover connection receives the sunshine that a plurality of little light reflect 20 reflections of oval panel, and transform light energy is become heat energy, produces steam and generates electricity.The two ends that a plurality of little light reflect oval panel 20 are fixed on the two end plates 103.
Described light reflection paraboloid plate 10 is rotatable light reflection paraboloid plate, and a plurality of light reflection paraboloid plates 10 link to each other with sunray tracking means (not shown), and described sunray tracking means can be selected general sunray tracking means.A plurality of light reflection paraboloid plates 10 can rotate by the focal axis A around light reflection paraboloid plate 10 under the control of sunray tracking means, make its axial plane E parallel with sunray all the time.The rotational structure of light reflection paraboloid plate 10 is shown in Fig. 1, Fig. 4 A, Fig. 4 B, hinged between a plurality of light reflection paraboloid plates 10 by connecting rod 40, and one of them light reflection paraboloid plate is provided with a driving mechanism 50, this driving mechanism 50 comprises worm gear tooth bar 51, worm screw 52, stepper motor 53, wherein, worm gear tooth bar 51 is one section arc-shaped rack, it is fixed on the support bar 12, in this example, two ends at the width of each light reflection paraboloid plate 10 respectively are fixed with a support bar 12, and the other end of support bar 12 is fixed in the rotating shaft 11.Stepper motor 53 is fixed on the base plate 101.Worm screw 52 is connected on the output shaft of stepper motor 53, and 53 of stepper motors link to each other with the sunray tracking means.This driving mechanism 50 drives one of them light reflection paraboloid plate 10 rotation according to the control signal of sunray tracking means, and rotates synchronously by connecting rod 40 other light reflection paraboloid plates 10 of drive, makes its axial plane parallel with sunray all the time.
As Fig. 4 A, Fig. 4 B, the a plurality of light reflection paraboloid plates 10 that are provided with along benchmark installed surface C rotate around the coaxial line rotating shaft 11 at two ends separately respectively, the center line of this rotating shaft overlaps with described focal axis A, rotating shaft 11 is connected on the end plate 103 at light reflection paraboloid plate 10 two ends rotationally, and a plurality of light reflection paraboloid plates 10 respectively are connected in the rotating shaft 11 by the support bar 12 at two ends.
As shown in Figure 1 and Figure 2, for preventing dust and wind and weather, to increase the service life and to reduce maintenance, this device also is provided with one and surrounds the tabular casing 100 that forms by base plate 101, the transparent roof panels parallel with base plate 102 and with described base plate two end plates 103, the biside plate 104 vertical with top board, wherein, the inner surface of two end plates 103 is a reflective surface, a plurality of light reflection paraboloid plates 10 and little light reflect oval panel 20 and are contained in the casing, and the two ends that little light reflects oval panel 20 are fixed on the end plate 103.
Operation principle of the present invention is shown in Fig. 2, Fig. 3 A, Fig. 3 B, because there is an angle on the earth's axis and its revolution plane of the earth, cause sunlight all different in the incidence angle of North and South direction at the different time of every day and every month, the maximum deviation of the incidence angle of the North and South direction of sunlight is ground four times of axial rake in 1 year, because a plurality of light reflection paraboloid plates 10, a plurality of little light reflects oval panel 20 and photo-thermal crossover connection 30 is along the east-west direction setting.When sunray shines a plurality of light reflection paraboloid plate 10, a plurality of light reflection paraboloid plates 10 turn to correct position under the control of sunray tracking means, make that the axial plane E of light reflection paraboloid plate 10 is parallel with sunray, light is pooled to light reflection paraboloid plate 10 reflects on the public focal axis A of oval panel 20, and arrive a plurality of little light and reflect on the light reflection surface of oval panel 20 with little light.By the optics geometrical principle as can be known, the light that arrives on the light reflection surface that little light reflects oval panel 20 through the light of public focal axis A is bound to by its another focal axis B, thereby the light that shines light reflection paraboloid will inevitably focus on and overlaps focal axis B and be contained on the photo-thermal crossover connection 30 at focal axis B place.

Claims (10)

1. the multi-paraboloid focusing device that can follow the tracks of sunray, it is characterized in that, it comprises a plurality of rotatable light reflection paraboloid plates (10) that are arranged in parallel by axial plane, the fixed size that is provided with a confocal axle in the adjacent domain of the focal axis of each light reflection paraboloid plate (10) reflects oval panel (20) less than the little light of light reflection paraboloid plate (10), the focal axis A that each little light reflects each corresponding with it respectively light reflection paraboloid plate (10) of a focal axis of oval panel overlaps, and another focal axis B that a plurality of little light reflect oval panel overlaps.
2. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1 is characterized in that, described little light reflects oval panel (20) and is of a size of 1/10th to a thirtieth of light reflection paraboloid plate (10) size.
3. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 2 is characterized in that, is provided with the photo-thermal crossover connection (30) parallel with the focal axis of light reflection paraboloid plate (10) at described focal axis B place.
4. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1, it is characterized in that, described a plurality of light reflection paraboloid plates (10) link to each other with the sunray tracking means, and the focal axis A around light reflection paraboloid plate (10) rotates under the control of sunray tracking means, makes its axial plane parallel with sunray all the time.
5. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1, it is characterized in that, described a plurality of light reflection paraboloid plates (10) are arranged along benchmark installed surface C, inclination angle between benchmark installed surface C and the horizontal plane D is α 1, α 1 is the latitude of solar-energy light collector position, described benchmark installed surface C northwards tilts in the Southern Hemisphere, then south dip on the Northern Hemisphere.
6. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1 is characterized in that, the focal axis A of each the light reflection paraboloid plate (10) that is provided with along benchmark installed surface C is along the east-west direction setting, and parallel with benchmark installed surface C.
7. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1, it is characterized in that, along hinged between each light reflection paraboloid plate (10) of benchmark installed surface C setting by connecting rod (40), and one of them light reflection paraboloid plate is provided with a driving mechanism (50), this driving mechanism links to each other with the sunray tracking means, this driving mechanism (50) drives one of them light reflection paraboloid plate (10) rotation according to the control signal of sunray tracking means, and drive other light reflection paraboloid plate (10) by connecting rod (40) and rotate synchronously, make its axial plane parallel with sunray all the time.
8. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1, it is characterized in that, this device also is provided with one and surrounds the tabular casing (100) that forms by base plate (101), the transparent roof panels (102) parallel with base plate and with described base plate two end plates (103), the biside plate (104) vertical with top board, wherein, the inner surface of two end plates (103) is a reflective surface, a plurality of light reflection paraboloid plates (10) and little light reflect oval panel (20) and are contained in the casing, and the two ends that little light reflects oval panel (20) are fixed on the end plate (103).
9. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 1, it is characterized in that, the a plurality of light reflection paraboloid plates (10) that are provided with along benchmark installed surface C rotate around the coaxial line rotating shaft (11) at two ends separately respectively, the center line of this rotating shaft overlaps with described focal axis A, rotating shaft (11) is connected on the end plate (103) at light reflection paraboloid plate (10) two ends rotationally, and a plurality of light reflection paraboloid plates (10) respectively are connected in the rotating shaft (11) by the support bar (12) at two ends.
10. the multi-paraboloid focusing device of following the tracks of sunray as claimed in claim 8, it is characterized in that, described driving mechanism (50) comprises worm gear tooth bar (51), worm screw (52), stepper motor (53), wherein, worm gear tooth bar (51) is fixed on the support bar (12), stepper motor (53) is fixed on the base plate (101), and worm screw (52) is connected on the output shaft of stepper motor (53).
CN2009103025334A 2009-05-22 2009-05-22 Multi-paraboloid focusing device capable of tracking solar rays Expired - Fee Related CN101629766B (en)

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CN101629766B CN101629766B (en) 2011-06-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270844A (en) * 1979-10-09 1981-06-02 Cobble Milan H Omni-directional compound paraboloid-hyperboloid radiation device
CN2580363Y (en) * 2001-12-06 2003-10-15 潘建明 Basically fixed high power focusing solar heat collector
CN100420967C (en) * 2005-09-02 2008-09-24 潘定国 Micro-lens type sun light reflector and its adjusting control device
CN100545693C (en) * 2007-08-14 2009-09-30 北京实力源科技开发有限责任公司 Solar-energy light collector and concentrating method

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