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Method and device for controlling light spots of heat collector

A heat collector and light spot technology is applied in the field of heat collection towers to reduce costs, reduce installation and debugging workload, and improve stability.

Active Publication Date: 2015-12-09
SHENZHEN ENESOON SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to propose a method and device for controlling the light spot of a heat collector, aiming at solving the problem of how to realize closed-loop control easily

Method used

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  • Method and device for controlling light spots of heat collector
  • Method and device for controlling light spots of heat collector
  • Method and device for controlling light spots of heat collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] refer to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for controlling the light spot of the heat collector according to the embodiment of the present invention.

[0059] In Embodiment 1, the method for controlling the light spot of the heat collector includes:

[0060] Step 101, focusing the heliostat spot on the heat collector through an open-loop control method;

[0061] Step 102, start at least three image sensors arranged around the heat collector, and the at least three image sensors are respectively on the circle centered on the center of the heat collector;

[0062] Preferably, the activation of at least three image sensors arranged around the heat collector includes:

[0063] Start the upper and lower image sensors arranged around the heat collector symmetrically with the heat collector as the center; or,

[0064] Start two left and right image sensors arranged around the heat collector symmetrically with the heat col...

Embodiment 2

[0082] refer to Figure 4 , Figure 4 It is a schematic flowchart of the second embodiment of the method for controlling the light spot of the heat collector according to the embodiment of the present invention.

[0083] On the basis of Embodiment 1, focusing the heliostat spot before the center of the heat collector through the closed-loop control method and the at least three image sensors further includes:

[0084] Step 104, making the light spot of the image sensor in an unsaturated state through the filter device arranged in front of the image sensor;

[0085] Step 105 , calibrating the grayscale values ​​of the image sensors, so that the grayscale values ​​of the symmetrical image sensors are the same under the same lighting conditions.

Embodiment 3

[0087] refer to Figure 5 , Figure 5 It is a schematic diagram of the functional modules of the device for controlling the light spot of the heat collector according to the embodiment of the present invention.

[0088] In the third embodiment, the device for controlling the light spot of the heat collector includes:

[0089] The first focusing module 501 is used to focus the heliostat spot on the heat collector through an open-loop control method;

[0090] A starting module 502, configured to start at least three image sensors arranged around the heat collector;

[0091] Preferably, refer to Image 6 , Image 6 It is a schematic diagram of the functional modules of the startup module 502 in the embodiment of the present invention. The startup module 502 includes:

[0092] The first starting unit 601 is used to start the upper and lower image sensors arranged around the heat collector symmetrically with the heat collector as the center;

[0093] The second starting unit...

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Abstract

The embodiment of the invention discloses a method and device for controlling light spots of a heat collector. The positioning precision of the light spots is improved through closed-loop tracking so that energy loss of the heat collector due to positioning deviation of the light spots can be reduced, the heat collection efficiency is improved, meanwhile, stability of heat distribution on the heat collector can be improved, and control over the heat collector is facilitated. A set of image sensors are placed on the periphery of the heat collector so that closed-loop control over a large amount of heliostats can be achieved, and compared with the existing mode that sensor devices are installed on heliostats to achieve closed-loop control, the number of the sensors adopted in the method and the device is small, and cost and installing and debugging workloads are easily reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of heat collecting towers, in particular to a method and device for controlling light spots of heat collectors. Background technique [0002] The tower solar thermal power station is a concentrated solar thermal power generation system. The tower system is to build a heat collection tower on the ground, install a heat collector on the top of the tower, and install a certain number of heliostats around the heat collection tower. The working medium in the heater generates high-temperature steam, which drives the steam turbine to generate electricity. [0003] A large number of heliostats around the collector tower constitute the mirror field. Controlling each heliostat in the mirror field to make the focused solar spot projected to the target position of the collector is the key technology of mirror field control. During the operation of the sun, its altitude angle and azimuth angle cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/40
CPCY02E10/47
Inventor 曾智勇
Owner SHENZHEN ENESOON SCI & TECH
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