Solar tracking system and linear fresnel reflection photothermal device

A linear Fresnel and sun tracking technology, which is applied to solar thermal devices, solar heating systems, heating devices, etc., can solve problems such as complex structures, and achieve the effects of high tracking accuracy, simplified structure, and convenient steering adjustment

Inactive Publication Date: 2017-08-18
苏跃进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a solar tracking system, thereby solving the problem of complex structure existing in the existing solar tracking system

Method used

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  • Solar tracking system and linear fresnel reflection photothermal device
  • Solar tracking system and linear fresnel reflection photothermal device
  • Solar tracking system and linear fresnel reflection photothermal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The three steering angles and moments of the support frame (suspension support frame) of Example 1 and Example 2 are analyzed as Figure 4 with Figure 5 As shown, Figure 4 In, set the symmetrical arrangement of the water tanks on both sides, where the mass of the suspension support frame and its upper support is m 1 , Its center of gravity is lower than the suspension point on the column, and the mass of the left water tank and its water is m 2 , The mass of the right water tank and its water is m 3 , Mark m 2 +m 3 =m 0 (Value);

[0057] The picture on the left shows the force balance state when the water volume in the water tanks on both sides is equal. The center of gravity of the suspension support frame is directly below the suspension point. At this time, m 2 =m 3 , The center of gravity of the suspension support frame is zero relative to the moment arm between the suspension points; when there is strong wind and no light, the water tanks in the water tanks on both sid...

Embodiment 5

[0081] In Embodiment 5, the weight of the two water tanks and their water is significantly greater than the weight of the Fresnel lens; Figure 15 The torque analysis diagram of Example 5 is given. The center of gravity of the suspension support frame and its upper support is on the support bearing. The angle of the suspension support frame's center of gravity relative to the axis of the support bearing and the number of water tanks on a certain side There is a definite relationship: the angle between the center of gravity of the water tanks on both sides, the line of suspension points, and the symmetry plane of the support frame is β. For the sake of simplicity, the center of gravity of the water tank is always at the axis of the water tank, the center of gravity of the water tank and the axis of the support bearing. Distance r 2 , The distance between the center of gravity of the suspension support frame and its upper support and the axis of the support bearing is r 1 , Usually...

Embodiment 9

[0099] The radius of the arc segment of the groove in embodiment 9 is not less than the radius of the arc-shaped support frame. The function of the arc segment is to limit the rotation range of the support frame, which is equivalent to the function of a stopper. In the case, the holding support frame (rotating frame) is limited in the groove (rotating groove). The length of the straight section of the turning groove is determined according to the turning range of the bogie. The length l of the straight section of the turning groove is equal to the radian of the turning angle multiplied by the radius r of the bogie, that is, l=αr. For example, when used for pitch angle tracking, the rotation angle range is 47°=2*23.5°, then l=47° / 360°*2π*r. For example, when used for azimuth tracking, if the rotation angle range is 2*60°=120°, then l=120° / 360°*2π*r=2πr / 3.

[0100] The three steering angles and torque analysis diagrams of the suspension support frame of Example 9 are as follows ...

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Abstract

The invention relates to a solar tracking system and a linear fresnel reflection photothermal device. The solar tracking system comprises a base and a support frame capable of performing pitch motion relative to the base; a first liquid tank and a second liquid tank are arranged on the two opposite sides of the support frame respectively; a communicating pipe and a communicating pump are connected between the first liquid tank and the second liquid tank and used for mutual liquid circulation of the first liquid tank and the second liquid tank; a force moment is produced due to liquid weight changes of the first liquid tank and the second liquid tank and balanced with a gravity center force moment of the support frame and the supporting object thereof to change the orientation of the support frame. According to the solar tracking system and the linear fresnel reflection photothermal device provided by the invention, the orientation of the support frame is changed through moment balance due to liquid weight changes of the first liquid tank and the second liquid tank, so that the solar tracking function is realized; besides, liquid in the first liquid tank and the second liquid tank mutually circulates and circularly flows, the counterweight structure and the structure of water tank connecting pipes are ingeniously simplified, and the orientation adjustment of the support frame is more convenient and accurate.

Description

Technical field [0001] The invention belongs to the field of solar thermal utilization, and specifically relates to a solar tracking system and a linear Fresnel reflection photothermal device. Background technique [0002] Solar energy is the most widely distributed renewable energy on the planet. Photovoltaic power generation and solar thermal utilization devices for solar energy have been widely used. In order to improve the efficiency of photovoltaic and solar thermal devices to receive sunlight, the azimuth tracking system that rotates east-west and (or) the pitch tracking system that rotates north-south is usually adopted. [0003] A common sun tracking system uses a motor to adjust the steering mechanism. The motor is usually adjusted in jog mode according to the instructions of the automatic control device. The adjustment cannot be performed continuously; the sun tracking process often requires the motor to start frequently, and each time the motor starts, it needs to overco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/38F24J2/08H02S20/32F24S50/20F24S23/30
CPCF24S50/20H02S20/32Y02E10/47Y02E10/50
Inventor 苏跃进
Owner 苏跃进
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