CN202196224U - Solar energy annular focusing device - Google Patents
Solar energy annular focusing device Download PDFInfo
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- CN202196224U CN202196224U CN2011203497535U CN201120349753U CN202196224U CN 202196224 U CN202196224 U CN 202196224U CN 2011203497535 U CN2011203497535 U CN 2011203497535U CN 201120349753 U CN201120349753 U CN 201120349753U CN 202196224 U CN202196224 U CN 202196224U
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- optically focused
- focused dish
- paraboloid
- dish
- focusing
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Abstract
The utility model relates to a solar energy annular focusing device, which comprises a light collecting disk (7), a light collecting disk support (8), a double-shaft reduction driving mechanism (9) and a stand column (10). A section equation of the paraboloid of revolution light collecting disk (7) is (X-a)2=2PY (X>a), namely the paraboloid of revolution is a paraboloid obtained by the fact that the section equation curve rotates around the central shaft of X=0, wherein 2000<P<2000, and 50<a<300. The solar energy annular focusing device can enable sunlight reflected by the light collecting disk to be focused on the bottom face and the side face of an external heat absorption sheet of a Sterling generator as much as possible and achieve the best heat absorption efficiency, the focusing method can reduce focusing area of a collecting mirror, simultaneously enable a heat absorption head of the Sterling generator to have a bigger heat absorption area, the side face and the top face of a fin absorb heat simultaneously, so that the problem that the light collecting disk in the market only can conduct top face focusing and focusing efficiency is not ideal is solved.
Description
Technical field
The utility model relates to a kind of device of solar focusing, relates in particular to a kind of sun power ring focusing device.
Background technology
The concentrating method of traditional point focusing formula disc type solar energy Stirling electricity generation system is sunshine accumulates in the Stirling engine heat absorbing end through the focus of optically focused dish reflection back light top.The concentrating method of this form is limited by the constraint of machining apparatus precision and processing technology, and the focus point position can be a focal spot usually, and the size of focal spot depends on the surface accuracy of rotation parabolic mirror face.But usually the shape of the ground heat absorbing sheet of Stirling engine or endothermic tube with structures shape its top jar and be not suitable for absorbing heat from the focal spot that circle is all arranged.So just, can't the sunshine of reflection more effectively be used, the energy of loss then need be through adding the area of video disc, or changing reflective dish specular material remedies.So not only brought a technical difficult problem, also increased production cost greatly to manufacturing.The utility model has used a kind of device of ring focusing to carry out optically focused; Make sunshine pass through a surface of revolution reflection that forms by the para-curve of off-axis; So just formed a burnt ring; The heat absorbing end fin of stirling generator or endothermic tube are arranged in burnt ring place, and its side is absorbed radiation heat energy better, thereby can improve generating efficiency greatly.
The utility model content
The purpose of the utility model provides a kind of sun power ring focusing device, through the improvement to traditional focus formula focalizer, has strengthened the heat absorption efficiency and the generating efficiency of disc type solar energy Stirling electricity generation system.
In order to achieve the above object, the technical scheme of the utility model is: a kind of sun power ring focusing device, and it comprises the optically focused dish; Optically focused dish support, the driving mechanism that reduces starter of the binary shafts, column; It is characterized in that: said optically focused dish is made up of the identical paraboloid of revolution of six plate shapes, and on optically focused dish support, optically focused dish support links to each other with column through the driving mechanism that reduces starter of the binary shafts the optically focused dish by bolted; Under the driving mechanism effect that reduces starter of the binary shafts, the optically focused dish requires to rotate according to solar tracking; The optically focused dish is connected to stirling generator through long connecting rod mechanism, and stirling generator comprises top jar, outer heat absorbing sheet; The pottery insulating ring, cooling water outlet and inlet, vibration damper; The external combustion engine housing; Wherein jar excircle outer heat absorbing sheet that is uniformly distributed with in top is that working medium provides energy in the external combustion engine through absorbing external heat, and outer heat absorbing sheet is in the catoptrical place that converges of optically focused dish, and the SECTION EQUATION of the optically focused dish paraboloid of revolution is (X-a)
2=2PY (X＞a), the promptly said paraboloid of revolution is the parabola of said SECTION EQUATION curve around the central shaft rotation gained of X=0, wherein, and 2000＜P＜20000,50＜a＜300.
Further, P=2200, a=60, the diameter of the focusing ring of light that obtains is 120mm;
Further; The driving mechanism that reduces starter of the binary shafts is made up of horizontal revolving reductor and vertical rotary reducer, and wherein, horizontal revolving reductor outer ring top board flange and column flange are connected and fixed; The drive motor and the worm screw of horizontal revolving reductor link; Start the engagement of back worm screw and turbine, turbine drives pivoting support and rotates together, and the pedestal of pivoting support and vertical rotary reducer is set to one; So drive of the central shaft rotation of whole vertical rotary reducer, form first rotary freedom around column; The drive motor and the worm screw of vertical rotary reducer link, and the pivoting support of vertical rotary reducer connects with the flange shaft of optically focused dish, rotate around flange shaft thereby drive the optically focused dish, form second rotary freedom.
The sun power ring focusing device that the utility model provides; Compared with prior art; Its advantage is: the utility model can focus on the sunshine of optically focused dish reflection the following and side of the outer heat absorbing sheet of stirling generator as much as possible, reach best heat absorption efficiency, and the method for this kind optically focused can reduce the collection area of condenser; Make the heat absorption head of stirling generator that bigger endotherm area can be arranged simultaneously; Absorbing heat simultaneously in fin side and top, has solved optically focused dish in the market and be merely able to carry out end face optically focused, the unfavorable problem of light gathering efficiency.
Because all parts of the electricity generation system that relates to of the utility model are machining in process of production, power consumption is little, thereby can accomplish the low emission of carbon gas and liquid pollutant in process of production, is the clean energy resource system that can be suitable for large-scale application.
Description of drawings
The overall construction drawing of Fig. 1 stirling generator;
The burnt formula solar energy Stirling of Fig. 2 ring electricity generation system principle schematic;
The burnt formula solar energy Stirling of Fig. 3 ring power generation system structure figure;
The schematic diagram of the burnt formula condenser system of Fig. 4 a conventional point;
Fig. 4 b encircles the schematic diagram of burnt formula condenser system,
The reduce starter of the binary shafts synoptic diagram of driving mechanism of Fig. 5.
Wherein: 1-pushes up jar, the outer heat absorbing sheet of 2-, 3-pottery insulating ring, 4-cooling water outlet and inlet, 5-vibration damper; 6-external combustion engine housing, 7-optically focused dish, 8-optically focused dish support, the 9-driving mechanism that reduces starter of the binary shafts; 10-column 10,11-stirling generator, 12-horizontal revolving reductor, the vertical rotary reducer of 13-.
Embodiment
Below in conjunction with accompanying drawing 1-4 the utility model is done further to describe.
As shown in Figure 1, the stirling generator of the utility model comprises top jar 1, outer heat absorbing sheet 2; Pottery insulating ring 3, cooling water outlet and inlet 4, vibration damper 5; External combustion engine housing 6, wherein top jar 1 can be through absorbing external heat, for working medium in the external combustion engine provides energy; Outer heat absorbing sheet 2 is for absorbing the major part of heat, from outer heat absorbing sheet 2 import into stirling generator inner can reach the highest efficient be uniformly distributed with because outer heat absorbing sheet 2 is excircles of the jar 1 along the top; For make heat behind the solar light focusing can uniform irradiation on outer heat absorbing sheet 2, just need make that focused solar light is the form of ring focusing.
As shown in Figures 2 and 3, a kind of sun power ring focusing device, it comprises optically focused dish 7; Optically focused dish support 8, the driving mechanism 9 that reduces starter of the binary shafts, column 10; Wherein, said optically focused dish 7 is made up of the identical paraboloid of revolution of six plate shapes, optically focused dish 7 by bolted on optically focused dish support 8; Optically focused dish support 8 links to each other with column 10 through the driving mechanism 9 that reduces starter of the binary shafts, and under driving mechanism 9 effects that reduce starter of the binary shafts, optically focused dish 7 requires to rotate according to solar tracking; Optically focused dish 7 is connected to stirling generator through long connecting rod mechanism, and the outer heat absorbing sheet 2 of Stirling engine is in the optically focused dish 7 catoptrical places that converge.The driving mechanism 9 that reduces starter of the binary shafts is made up of horizontal revolving reductor 12 and vertical rotary reducer 13; Wherein horizontal revolving reductor 12 outer ring top board flanges and column flange are connected and fixed; The drive motor and the worm screw of horizontal revolving reductor 12 link; Start the engagement of back worm screw and turbine, turbine drives pivoting support and rotates together, and the pedestal of pivoting support and vertical rotary reducer 13 is set to one; So drive of the central shaft rotation of whole vertical rotary reducer 13, form first rotary freedom around column; And in like manner, the drive motor and the worm screw of vertical rotary reducer 13 link, and start the engagement of back worm screw and turbine, and turbine drives pivoting support and rotates together.The pivoting support of vertical rotary reducer 13 connects with the flange shaft of optically focused dish, and the both ends of the surface of pivoting support connect with two flanges of flange shaft, and row and drive rotates around flange shaft according to laser disc, forms second rotary freedom.Therefore, the optically focused dish can be under the control of zero stand-off enclosure type dual-axis driving device, around the interlock rotary pursuit sunshine of two vertical central shafts.
Dish formula photo-thermal optically focused is different with the photovoltaic tracking, owing to parabolic focus need be controlled through direct sunlight, so just need high request more just be arranged to the precision and the control system of device for revolving and driving.
Shown in Fig. 4 a-b, the SECTION EQUATION of traditional paraboloid of revolution is generally X
2The quafric curve of=2PY (X＞0) is around the central shaft rotation gained of X=0, and the optically focused of this form, theoretical focal spot are a point, and the energy behind its optically focused all shines on the jar of engine top; The SECTION EQUATION of the burnt formula paraboloid of revolution of the described ring of the utility model is (X-a)
2(quafric curve of X＞a) is around the central shaft rotation gained of X=0, and the optically focused of this form, theoretical focal spot be burnt ring, and the energy behind its optically focused all shines on the outer heat absorbing sheet, with the heat absorption of realization maximal efficiency for=2PY.
Usually the P value confirms that according to focal length length value can be between 2000-20000, and a value need be confirmed according to the intermediate value of the heat absorbing sheet radius of Stirling engine, generally can get 50-300.When being applied in the Stirling electric system of present case, get P=2200, a=60; Can obtain the theoretical diameter that focuses on the ring of light is 120mm; Can 100% on its optically focused energy theory drop on the heat absorbing sheet, actual because the deviation of manufacturing process is arranged, about sunshine reflected energy more than 85% accumulates on the outer heat absorbing sheet; Energy accumulating below 15% is on the jar of top, and the heat absorption efficiency than the conventional point type of focusing that relies on top jar heat absorption can exceed 30-50% like this.Thereby improved the work efficiency of stirling generator greatly, and reduced the area of optically focused dish.The benefit that adopts annular beam condensing unit is can the sunshine of optically focused dish 7 reflections be focused on the outer heat absorbing sheet 2 of stirling generator 11 as much as possible; Can reach the highest efficient when making stirling generator 11 work; And the method for this kind optically focused can increase the endotherm area of optically focused; Make the heat absorption head of stirling generator 11 that bigger endotherm area can be arranged; Absorbing heat simultaneously in the side and the top of heat absorbing sheet, has solved optically focused dish in the market and be merely able to carry out end face optically focused, the unfavorable problem of light gathering efficiency.
Fig. 5 has schematically shown the driving mechanism that reduces starter of the binary shafts.
Claims (3)
1. sun power ring focusing device, it comprises optically focused dish (7), optically focused dish support (8); The driving mechanism (9) that reduces starter of the binary shafts, column (10) is characterized in that: said optically focused dish (7) is made up of the identical paraboloid of revolution of six plate shapes; Optically focused dish (7) by bolted on optically focused dish support (8); Optically focused dish support (8) links to each other with column (10) through the driving mechanism that reduces starter of the binary shafts (9), and under the driving mechanism that reduces starter of the binary shafts (9) effect, optically focused dish (7) requires to rotate according to solar tracking; Optically focused dish (7) is connected to stirling generator through long connecting rod mechanism, and stirling generator comprises top jar (1), outer heat absorbing sheet (2); Pottery insulating ring (3), cooling water outlet and inlet (4), vibration damper (5); External combustion engine housing (6); Wherein jar (1) excircle outer heat absorbing sheet (2) of being uniformly distributed with in top is that working medium provides energy in the external combustion engine through absorbing external heat, and outer heat absorbing sheet (2) is in the catoptrical place that converges of optically focused dish (7), and the SECTION EQUATION of optically focused dish (7) paraboloid of revolution is (X-a)
2=2PY (X＞a), the promptly said paraboloid of revolution is the parabola of said SECTION EQUATION curve around the central shaft rotation gained of X=0, wherein, and 2000＜P＜20000,50＜a＜300.
2. sun power ring focusing device according to claim 1 is characterized in that, P=2200, and a=60, the focused light ring diameter that obtains is 120mm.
3. sun power ring focusing device according to claim 1 is characterized in that, the driving mechanism that reduces starter of the binary shafts (9) is made up of horizontal revolving reductor (12) and vertical rotary reducer (13); Wherein, Horizontal revolving reductor (12) outer ring top board flange and column (10) flange are connected and fixed, and the drive motor and the worm screw of horizontal revolving reductor (12) link, and start the engagement of back worm screw and turbine; Turbine drives pivoting support and rotates together; The pedestal of pivoting support and vertical rotary reducer (13) is set to one, so drive the central shaft rotation of whole vertical rotary reducer (13) around column (10), forms first rotary freedom; The drive motor and the worm screw of vertical rotary reducer (13) link, and the pivoting support of vertical rotary reducer (13) connects with the flange shaft of optically focused dish, rotate around flange shaft thereby drive the optically focused dish, form second rotary freedom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203497535U CN202196224U (en) | 2011-09-19 | 2011-09-19 | Solar energy annular focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203497535U CN202196224U (en) | 2011-09-19 | 2011-09-19 | Solar energy annular focusing device |
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| Publication Number | Publication Date |
|---|---|
| CN202196224U true CN202196224U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203497535U Expired - Fee Related CN202196224U (en) | 2011-09-19 | 2011-09-19 | Solar energy annular focusing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331621A (en) * | 2011-09-19 | 2012-01-25 | 上海兆阳新能源科技有限公司 | Solar annular focusing device |
| CN103868245A (en) * | 2014-03-10 | 2014-06-18 | 兰州理工大学 | Mixed heat collecting structure of disc type solar thermal power generation system |
| CN104092424A (en) * | 2013-04-01 | 2014-10-08 | 佛山正能光电有限公司 | Disc type energy storage and transmission device |
| CN104849844A (en) * | 2015-03-19 | 2015-08-19 | 浙江大学 | Dish type Fresnel reflection concentration method and apparatus thereof |
-
2011
- 2011-09-19 CN CN2011203497535U patent/CN202196224U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331621A (en) * | 2011-09-19 | 2012-01-25 | 上海兆阳新能源科技有限公司 | Solar annular focusing device |
| CN104092424A (en) * | 2013-04-01 | 2014-10-08 | 佛山正能光电有限公司 | Disc type energy storage and transmission device |
| CN103868245A (en) * | 2014-03-10 | 2014-06-18 | 兰州理工大学 | Mixed heat collecting structure of disc type solar thermal power generation system |
| CN104849844A (en) * | 2015-03-19 | 2015-08-19 | 浙江大学 | Dish type Fresnel reflection concentration method and apparatus thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20200919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |