WO2011147317A1

WO2011147317A1 - Device for tracking solar irradiation

Info

Publication number: WO2011147317A1
Application number: PCT/CN2011/074660
Authority: WO
Inventors: 夏君铁; 夏之秋; 赵婷婷
Original assignee: Xia Juntie; Xia Zhiqiu
Priority date: 2010-05-27
Filing date: 2011-05-25
Publication date: 2011-12-01

Abstract

A device for tracking solar irradiation is provided, which is designed for solving the technical problems of small structural scale, low running benefit, poor capacity of resisting windy sand, inapplicability in environments with larger windy sand, high maintenance cost, extra energy consumption, high running failure rate, short service life of components and the like existing in the traditional solar illumination dynamic tracking system. The device mainly consists of a light-collecting device frame (1), a longitude tracking part and a latitude tracking part, wherein the latitude tracking part consists of an annular track (6) with a negative gradient, a track central shaft and a pulley (3); and the longitude tracking part is formed by fixing the bottom end of the light-collecting device frame (1) on the pulley (3) through a hinge point. The device is suitable for occasions needing to automatically track the solar illumination in real time or large structure fabrication, such as large-scale photovoltaic or photo-thermal power stations, especially suitable for windy sand environments, and can steadily and reliably run by only utilizing the gravitational potential energy without additional energy sources. The device has characteristics of simple installation, stable running, high efficiency, low cost, windy sand resistance, easy maintenance and the like.

Description

Description of the device for tracking solar illumination

Technical field:

The present invention relates to a solar energy harvesting device, and more particularly to a device for tracking sunlight. Suitable for large-scale photovoltaic power stations, especially suitable for use in the wind and sand environment in northwestern China.

Background technique:

At present, most of the photovoltaic systems are often installed in a fixed angle of the panel, so that the efficiency of receiving light is very low. The existing dynamic tracking system mainly uses high-speed rotating components to achieve tracking, such as: Bulletin No.: CN101135913, CN101201628, CN2533435, the "Solar Automatic Tracking Turntable" and "Automatic Tracking Device for Fixed Solar Receiver of Elevation Shaft"; The device such as the sun synchronization tracking device has poor anti-sanding ability, is not suitable for use in a large sandstorm environment, and has high installation and maintenance costs, and requires additional energy consumption. The whole system has many limitations, such as high cost, high failure rate, short component life (mainly due to the influence of wind and sand in the environment), and inconvenient maintenance.

Summary of the invention:

The invention has the advantages of poor anti-sanding ability in the existing solar light dynamic tracking system, is not suitable for use in a large sandstorm environment, has high maintenance cost, requires additional energy consumption, has high operation failure rate, and has short component life. The technical problem provides a device for tracking the sunlight, which is mainly composed of a daylighting frame, a meridional tracking portion and a latitudinal tracking portion; the latitudinal tracking portion is composed of a circular orbit with a negative slope and a pulley. The warp tracking portion is composed of one end of the light guide frame fixed to the trolley through a hinge point.

The zonal tracking portion further includes a damper cylinder fixed to the trolley and an annular damping curve working surface fixed to the rail. The warp tracking portion also includes a crank and a link. One end of the connecting rod is hingedly fixed in the sliding groove of the crank, and the other end is hinged on the light collecting frame, and the connecting rod is adjustable on the crank or the hinge point on the light collecting frame. The connecting rod can also be realized with a hydraulic linkage system. The invention has the characteristics and beneficial effects: suitable for occasions requiring automatic tracking of solar illumination in real time, suitable for large structure production, used for large-scale photovoltaic power stations, and does not require additional energy, and can be smoothly and reliably operated by using only its own gravity potential energy. . It is especially suitable for use in the wind and sand environment of the western part of China. It has the characteristics of simple installation, stable operation, high efficiency, low cost, sand-resistant and easy maintenance.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention

2 and 2-1 are schematic structural diagrams of Embodiment 1 of the present invention.

3 and 3-1 are schematic diagrams showing the structure of Embodiment 2 of the present invention.

4 is a schematic structural view of Embodiment 3 of the present invention.

FIG. 5 and FIG. 5-1 are schematic diagrams showing the structure of Embodiment 4 of the present invention.

FIG. 5 is a schematic structural diagram of Embodiment 5 of the present invention.

Figure 6 is a schematic structural view of Embodiment 6 of the present invention

detailed description

A device for tracking solar illumination, which is mainly composed of a light guide frame 1, a warp tracking portion, and a zonal tracking portion. The zonal tracking portion is composed of an annular track 6 with a negative slope and a trolley 3; the warp tracking portion is composed of one end of the illuminator frame 1 fixed to the trolley 3 through a hinge point. The zonal tracking portion further includes a damper cylinder 7 fixed to the trolley 3 and a working surface of the annular damping curve ⁸ fixed on the rail; the warp tracking portion further includes a crank 9 and a connecting rod 10; One end of the 10 is hingedly fixed in the chute of the crank 9, and the other end is hinged to the illuminator frame 1, and the illuminator frame 1 is controlled so that its normal direction always points in the direction of the sun for real-time tracking of the sun's illumination. The connecting rod is adjustable on the crank or at the hinge point on the daylight holder. The connecting rod can also be realized with a hydraulic linkage system. The working process of the device:

1. Adjust the position of the connecting rod in the chute on the crank according to the season change (slightly away from the center point of the crank in summer and close to the center point in winter) to adjust the daily pitch angle z-splash of the daylighting frame. To adapt to changes in the solar elevation angle of each season in different seasons.

2. Before dawn, add the working medium in the damping cylinder, open the damping valve, and adjust the damping coefficient.

3. Adjust the end of the slide rail of the pulley to a height lower than the starting point as the end position.

4. Open the latitude stop device of the pulley and adjust the damping coefficient or track gradient at any time to make the pulley slowly advance along the track under the action of its own gravity. The rotation speed is synchronized with the sun's illumination until the sun sets.

5. Release the zonal damping effect.

6. The pulley is reset to return the pulley carrying the light guide frame to the starting position. The reset jack can be used to raise the end of the track a little, causing the pulley to slip back to the starting point (reset point) for future work.

Example 1

See Figure 2, Figure 2-1, device for tracking solar illumination

In the warp tracking portion, the bottom end of the light fixture holder 1 is hinged to the bottom plate of the trolley 3 through a hinge point 2, wherein the upper end of the light guide frame 1 is hinged to the connecting rod 10 through a two-dimensional hinge point, and the other end of the connecting rod 10 and the crank 9 The warp tracking portion is hinged in a one-dimensional hinged form. In addition, the daily pitch angle of the daylighting frame 1 can be adjusted by adjusting the position of the hinge point of the connecting rod 10 on the crank 9 or the daylighting frame 1 according to the change of the season, and locking and fixing by the locking member 4. In order to adapt to the changes of the solar elevation angle in different seasons, the lighting fixture frame 1 automatically tracks the sun's illumination at any time.

The circular track 6 of the trochle of the zonal tracking section adopts a negative orbital mode with a slope, that is, in the working state, the starting point of the orbit is spiraled above the end point, and the trolley ^{3 can} use its own gravitational potential energy along its orbit. Sway. The speed of the swaying is controlled by adjusting the damping coefficient of the damper cylinder 7 (i.e., the flow rate at which the working medium is forced out of the working chamber).

In this example, the damper cylinder 7 is fixed on the trolley 3, and the piston rod on the damper cylinder 7 is controlled by the working surface of the radial matching damping curve 8 to control the trolley 3 carrying the glazing frame around the central axis 5 in the rail 6 The speed of the swaying. P and the curve 8 are constant velocity spirals at this time.

P and the fixed position of the damping cylinder 8 and the damping curve 8 can be interchanged, that is, the damping cylinder 7 can also be fixed with the rail 6 (or the non-moving part of the device), and the damping curve 8 and the trolley 3 (or The relative movement of the device is fixed in one piece. The same below.

Example 2

Referring to FIG. 3 and FIG. 3-1, the device for tracking the sunlight, the working surface of the damping curve 8 of the latitudinal tracking portion and the track 6 are coaxial annular faces, and the piston rod on the nylon cylinder 7 is axially The speed of the sliding of the trolley 3 carrying the daylighting frame 1 about the central axis 5 on the track 6 is achieved in cooperation with the working surface of the damping curve 8. Other parts may be the same as one of the other embodiments.

Example 3

Referring to FIG. 4, the device for tracking the sunlight, the bottom end of the illuminator frame 1 of the warp tracking portion is hinged to the bottom plate of the trolley 3 through the hinge point 2, wherein the upper end of the illuminator frame 1 is hinged to the connecting rod 10 through the hinge point, The other end of the rod 10 is hinged to a horizontally axial crank 9 which is rotated by the bevel gear fixed thereto and the vertical axially fixed bevel gear fixed to the trolley 3 to generate relative rotation. The link 10 is pushed to complete the warp tracking operation. The other parts may be the same as the other parts of the other embodiments.

Example 4

Referring to FIG. 5 and FIG. 5-1, the device for tracking solar illumination has a gradual tracking portion adopting a progressive self-locking damping mechanism, which is composed of a damper cylinder 7, a reverse buckle caster 13 and a damping curve working surface rail 8 and a pulley. The reverse fit between the track 6 (or the cooperative track surface) is formed (Fig. 5-1); the distance between the P and the curve track 8 and the pulley track 6 (or the cooperative track surface) is gradually widened. Progressive self-locking damping mechanism. Other parts may be the same as one of the other embodiments.

Example 5

Referring to Fig. 5, a device for tracking solar illumination, the link 10 of the warp tracking portion is realized by a hydraulic linkage system, which is composed of a sump 11 and a support cylinder 12, an oil passage tube 14, and a flow divider 15. One end of the sump 11 is hinged on the trolley 3, and the other end is hinged on the crank 9. The two working chambers of the sump 11 are respectively connected to the working chambers of the shunt 15 through the oil pipe 14, and then passed through the oil pipe. 14 is respectively connected to the working chamber of the supporting cylinder 12; one end of the supporting cylinder 12 is hinged to the lighting fixture frame 1 and the other end is hinged to the trolley 3. The hydraulic linkage system includes at least one sump 11 and one Support cylinders 12. Other parts may be the same as one of the other embodiments.

Example 6

Referring to Fig. 6, the device for tracking the sunlight can be adjusted by manual or using a transmission device, and then adjusted and locked by a positioning pin or a locking member 4. Adjusted before dawn every day, the normal direction of the working surface of the daylighting frame 1 is the direction of the sun at 12 o'clock or 13 o'clock in the day, and the locking is fixed. Other latitudinal tracking portions may be the same as one of the other embodiments.

The invention is also applicable to other solar energy collection applications.

Claims

Claim

1. A device for tracking solar illumination, which is mainly composed of a daylighting frame (1X meridional tracking portion and a zonal tracking portion; characterized in that: the latitudinal tracking portion is composed of a circular orbit with a negative slope

(6) and the trolley (3); the warp tracking portion is composed of one end of the light fixture holder (1) fixed to the trolley (3) through a hinge point.

2. The apparatus for tracking solar illumination according to claim 1, wherein the latitudinal tracking portion further comprises a damper cylinder (7) fixed to the trolley (3) and an annular damping curve fixed on the rail ( 8) The working surface.

3. The apparatus for tracking solar illumination according to claim 1, wherein the warp tracking portion further comprises a crank (9) and a connecting rod (10); one end of the connecting rod (10) is hingedly fixed to On the crank (9), the other end is hinged to the light fixture holder (1).