CN203259704U - Three-point supporting type heliostat supporting device - Google Patents
Three-point supporting type heliostat supporting device Download PDFInfo
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- CN203259704U CN203259704U CN201320203046.4U CN201320203046U CN203259704U CN 203259704 U CN203259704 U CN 203259704U CN 201320203046 U CN201320203046 U CN 201320203046U CN 203259704 U CN203259704 U CN 203259704U
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Abstract
The utility model discloses a three-point supporting type heliostat supporting device. The three-point supporting type heliostat supporting device is characterized in that the device comprises a first vertical column (1), a second vertical column (2) and a third vertical column (3) which are arranged in a triangle; a first ball screw (4) and a second ball screw (5) which are movably connected with the first vertical column (1) and the second vertical column (2) are respectively arranged on the top ends of the first vertical column (1) and the second vertical column (2); the top ends of the first ball screw (4) and the second ball screw (5) are movably connected with a heliostat surface supporting carrier (6) which is arranged at the upper sides of the first ball screw (4) and the second ball screw (5); the top end of the third vertical column (3) is directly and movably connected with the heliostat surface supporting carrier (6); and a reflective mirror (7) is positioned on the heliostat surface supporting carrier (6). The three-point supporting type heliostat supporting device enables two-dimensional tracking on the sun to be realized so that the light condensing precision is greatly improved and the weight and the control difficulty of a system are reduced; and the three-point supporting type heliostat supporting device has the characteristics of being simple in structure, low in cost, convenient to install and debug and easy to control and is suitable for popularization and application.
Description
Technical field
The utility model relates to tower-type solar thermal power generating system, specifically a kind ofly can greatly increase the optically focused precision, reduces mass of system and be easy to the Three-points supporting type heliostat support device of installment and debugging.
Background technology
Heliostat is the beam condensing unit in Solar Energy Heat Utilization System, and it will gather a certain fixed target place after sunshine reflection.Heliostat comprises mirror surface, mirror surface supporting construction, kinematic train and tracking control system.Reasonably system architecture can increase system stiffness and intensity, reduces Reflector deformation, improves light gathering efficiency, can greatly reduce the control system difficulty simultaneously, improves tracking accuracy, and reasonable control system cost.In existing heliostat technology, the heliostat support system adopts single column form more, and namely mirror surface and supporting construction thereof are only supported by single upright column.The shortcoming of this structure is that it only can support less mirror surface, otherwise the system variant amount is very large, the optically focused deterioration in accuracy.Adopt the increase system stiffness can solve the optically focused precision problem, but in general the heliostat steel quantity consumption increases, and then cause cost to increase.In addition, because needs carry out two-dimensional tracking to the sun, therefore this heliostat structural control system is complicated, is difficult for realizing.
Need the even thousands of cover heliostats of covers up to a hundred in the tower type solar power house, its cost accounts for 50% of whole electricity generation system.Therefore how under the prerequisite that guarantees the optically focused precision, reducing system weight is the gordian technique of tower type solar energy thermal power generation technology.In addition, because the heliostat position is different, the position angle of every cover heliostat is also different, therefore every cover control system needs debugging separately, therefore reduce the control system difficulty, just can reduce to a great extent technician's labour intensity, and shorten the heliostat Installation and Debugging cycle.Therefore be badly in need of appropriate design heliostat system structure.
Summary of the invention
The purpose of this utility model is the defective for prior art, provides a kind of and can greatly increase the optically focused precision, reduces mass of system and be easy to the Three-points supporting type heliostat support device of installment and debugging.
The purpose of this utility model solves by the following technical programs:
A kind of Three-points supporting type heliostat support device, it is characterized in that described bracing or strutting arrangement comprises the first column, the second column and the 3rd column that is triangularly arranged, the top of described the first column and the second column is respectively equipped with the first ball screw and the second ball screw that is movably connected with it, the mirror support carrier of the top of the first ball screw and the second ball screw and its upside is movably connected, the top of described the 3rd column directly and the mirror support carrier be movably connected, the mirror support carrier is provided with mirror surface.
The back of described mirror support carrier is provided with the spherical pair that is triangularly arranged, and described mirror support carrier is movably connected by the top of spherical pair and the 3rd column, the first ball screw and the second ball screw respectively.
When the lower end of the top of described the first column by revolute pair and the first ball screw is hinged and connected, the top of the second column is hinged and connected by the lower end of universal pair and the second ball screw.
When the lower end of the top of described the first column by universal pair and the first ball screw is hinged and connected, the top of the second column is hinged and connected by the lower end of revolute pair and the second ball screw.
Described spherical pair is the back that equilateral triangle is arranged in the mirror support carrier.
Described the first column, the second column and the 3rd column are the equilateral triangle setting.
The length of described the first ball screw and the second ball screw is determined by following equation:
In formula, A, B, C represent that respectively the installation site of three spherical pairs on the mirror support carrier, D and E are respectively revolute pair or the installation site of universal pair on the first column and the second column,
The length of side when being three spherical pairs formation equilateral triangles,
With
Be respectively the length of the first ball screw and the second ball screw,
,
With
Be respectively incident ray vector, normal vector and reflection ray vector, the incident ray vector
Determined normal vector by solar azimuth and elevation angle
Determined the reflection ray vector by the coordinate of 3 of A, B, C with the coordinate of incidence point O
Location positioning by incidence point O and thermal-arrest tower.
The utility model has the following advantages compared to existing technology:
The utility model is by adopting 3 root post supporting reflex minute surfaces and mirror support carrier thereof, and adopts ball screw and spherical pair, rotation width and universal secondary to consist of the degree of freedom number be that 2 supporting movement system realizes the two-dimensional tracking to the sun; Said structure can increase the optically focused precision greatly, reduces the weight of system and the difficulty of control, have simple in structure, cost is low, Installation and Debugging are convenient and the characteristics that are easy to control, suitable promoting the use of.
Description of drawings
Accompanying drawing 1 is one of structural representation of the present utility model;
Accompanying drawing 2 is two of structural representation of the present utility model;
Accompanying drawing 3 is the position assumption diagram of spherical pair of the present utility model, revolute pair and universal pair;
Accompanying drawing 4 is the length computation schematic diagram of the first ball screw of the present utility model and the second ball screw.
Wherein: the 1-the first column; The 2-the second column; The 3-the three column; The 4-the first ball screw; The 5-the second ball screw; 6-mirror support carrier; 7-mirror surface; 8-spherical pair; 9-revolute pair; 10-universal pair.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in the figure: a kind of Three-points supporting type heliostat support device, comprise the mirror surface 7 that is installed on the mirror support carrier 6 that is welded by shaped steel, the face type of mirror surface 7 can be designed to the curved surface patterns such as sphere or tire tread, and consistent with the face type of mirror support carrier 6, to guarantee the installation accuracy of mirror surface 7.Install at the back of mirror support carrier 6 between 8,3 spherical pairs 8 of 3 spherical pairs and also preferentially to select to be the back that equilateral triangle is arranged in mirror support carrier 6, the distance between 3 spherical pairs 8 can be determined according to the reflective surface area of heliostat.This bracing or strutting arrangement comprises the first column 1, the second column 2 and the 3rd column 3 that is triangularly arranged, the first column 1, the second column 2 and the 3rd preferential selection of column 3 are equilateral triangle and are fixedly installed on ground, the top of the first column 1 is by revolute pair 9(or universal secondary 10) when being hinged and connected with the lower end of the first ball screw 4 top of the second column 2 by universal secondary 10(or revolute pair 9) and the lower end of the second ball screw 5 be hinged and connected, namely revolute pair 9 and universal secondary 10 must be used simultaneously.The top of the 3rd column 3, the first ball screw 4 and the second ball screw 5 is movably connected by spherical pair 8 and mirror support carrier 6 respectively.Above-mentioned bracing or strutting arrangement comprises that 3 spherical pairs 8,1 rotate 9 and 1 universal secondary 10, the movable link number is 5, therefore the degree of freedom number of this bracing or strutting arrangement is 2, that is to say that this bracing or strutting arrangement can be realized the two-dimensional tracking to the sun after the first ball screw 4 and the second ball screw 5 work alone respectively.
During Relative position determination when the position of the first column 1, the second column 2 and the 3rd column 3 and length, thermal-arrest tower position and three spherical pairs 8 on mirror surface 7, the length of the first ball screw 4 and the second ball screw 5 is determined by following equation:
In formula, A, B, C represent that respectively the installation site of three spherical pairs on the mirror support carrier, D and E are respectively revolute pair or the installation site of universal pair on the first column and the second column,
The length of side when being three spherical pairs formation equilateral triangles,
With
Be respectively the length of the first ball screw and the second ball screw,
,
With
Be respectively incident ray vector, normal vector and reflection ray vector, the incident ray vector
Determined normal vector by solar azimuth and elevation angle
Determined the reflection ray vector by the coordinate of 3 of A, B, C with the coordinate of incidence point O
Location positioning by incidence point O and thermal-arrest tower.
Bracing or strutting arrangement of the present utility model can carry out in use in the steps below:
(a), at first calculate and the sun-sensor signal according to theory, determine position angle and the elevation angle of arbitrary moment sun;
(b), then tentatively determine position and length and the relative position of 3 spherical pairs 8 on mirror surface 7 of the first column 1, the second column 2 and the 3rd column 3;
(c), then make the length of the first ball screw 4 and the second ball screw 5 be respectively
With
, the volume coordinate of 2 of B, C by
With
Determine, and then by the normal vector of A, B, 3 location positioning mirror surfaces 7 of C
And the coordinate of incidence point O;
(d), can determine the reflection ray vector by O point coordinate and thermal-arrest tower position
, according to the reflection ray vector
, normal vector
With the incident ray vector
Between relation can instead push away
With
The condition that should satisfy and control law, thus realization is to the accurate tracking of the sun;
(e), according to deriving
With
Control law is optimized the position of position, length and 3 spherical pairs 8 of the first column 1, the second column 2 and the 3rd column 3.
In sum, at first the utility model calculates real-time solar azimuth by the solar motion rule, and according to sun-sensor, the position angle is revised in real time; Then determine the space plane equation of heliostat, calculate the stroke of the first ball screw 4 and the second ball screw 5, last control system is controlled the executive component action, adjusts the heliostat orientation, makes it the accurate tracking sun.
The utility model is by adopting 3 root post supporting reflex minute surface 7 and mirror support carriers 6 thereof, and adopt ball screw and spherical pair 8, rotating 9 and universal secondary 10, to consist of the degree of freedom numbers be that 2 supporting movement system realizes the two-dimensional tracking to the sun; Said structure can increase the optically focused precision greatly, reduces the weight of system and the difficulty of control, have simple in structure, cost is low, Installation and Debugging are convenient and the characteristics that are easy to control, suitable promoting the use of.
Above embodiment only is explanation technological thought of the present utility model, can not limit protection domain of the present utility model with this, every technological thought according to the utility model proposes, any change of doing on the technical scheme basis is within all falling into the utility model protection domain; The technology that the utility model does not relate to all can be realized by prior art.
Claims (7)
1. Three-points supporting type heliostat support device; It is characterized in that described bracing or strutting arrangement comprises the first column (1) that is triangularly arranged; The second column (2) and the 3rd column (3); The top of described the first column (1) and the second column (2) is respectively equipped with the first ball screw (4) and the second ball screw (5) that is movably connected with it; The mirror support carrier (6) of the top of the first ball screw (4) and the second ball screw (5) and its upside is movably connected; The top of described the 3rd column (3) directly and mirror support carrier (6) be movably connected; Mirror support carrier (6) is provided with mirror surface (7).
2. Three-points supporting type heliostat support device according to claim 1, the back that it is characterized in that described mirror support carrier (6) is provided with the spherical pair (8) that is triangularly arranged, and described mirror support carrier (6) is movably connected by the top of spherical pair (8) and the 3rd column (3), the first ball screw (4) and the second ball screw (5) respectively.
3. Three-points supporting type heliostat support device according to claim 1 and 2, when the lower end of the top that it is characterized in that described the first column (1) by revolute pair (9) and the first ball screw (4) was hinged and connected, the top of the second column (2) was hinged and connected by the lower end of universal pair (10) and the second ball screw (5).
4. Three-points supporting type heliostat support device according to claim 1 and 2, when the lower end of the top that it is characterized in that described the first column (1) by universal pair (10) and the first ball screw (4) was hinged and connected, the top of the second column (2) was hinged and connected by the lower end of revolute pair (9) and the second ball screw (5).
5. Three-points supporting type heliostat support device according to claim 2, is characterized in that described spherical pair (8) is the back that equilateral triangle is arranged in mirror support carrier (6).
6. Three-points supporting type heliostat support device according to claim 1 or 5, is characterized in that described the first column (1), the second column (2) and the 3rd column (3) are the equilateral triangle setting.
7. Three-points supporting type heliostat support device according to claim 6 is characterized in that the length of described the first ball screw (4) and the second ball screw (5) is determined by following equation:
In formula, A, B, C represent that respectively the installation site of three spherical pairs on the mirror support carrier, D and E are respectively revolute pair or the installation site of universal pair on the first column and the second column,
The length of side when being three spherical pairs formation equilateral triangles,
With
Be respectively the length of the first ball screw and the second ball screw,
,
With
Be respectively incident ray vector, normal vector and reflection ray vector, the incident ray vector
Determined normal vector by solar azimuth and elevation angle
Determined the reflection ray vector by the coordinate of 3 of A, B, C with the coordinate of incidence point O
Location positioning by incidence point O and thermal-arrest tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320203046.4U CN203259704U (en) | 2013-04-22 | 2013-04-22 | Three-point supporting type heliostat supporting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320203046.4U CN203259704U (en) | 2013-04-22 | 2013-04-22 | Three-point supporting type heliostat supporting device |
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| CN203259704U true CN203259704U (en) | 2013-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185407A (en) * | 2013-04-22 | 2013-07-03 | 南京工业大学 | Three-point supporting type heliostat supporting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185407A (en) * | 2013-04-22 | 2013-07-03 | 南京工业大学 | Three-point supporting type heliostat supporting device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20160422 |