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Surface shape detection device for solar condensing mirror

A technology of solar concentrating and detecting device, which is applied in the field of mirror surface detection, can solve the problems of inconsistency between the actual surface shape of the condenser mirror and the designed surface shape, affecting the optical performance of the condenser mirror, etc. Effect

Inactive Publication Date: 2011-11-16
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the adjustment and inspection of large solar concentrators generally used the method of calibrating the light target, that is, by adjusting the inclination angle of the small reflector, the light spot of the small reflector is projected to the center of the light target at a certain moment, which leads to the actual surface shape of the concentrator being different from that of the light target. The design surface shape does not match, which will affect the optical performance of the condenser

Method used

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  • Surface shape detection device for solar condensing mirror
  • Surface shape detection device for solar condensing mirror
  • Surface shape detection device for solar condensing mirror

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Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the light source is the sun 1. Described measured condenser 2 has two rotation axes, rotating shaft one 14 and rotating shaft two 15 perpendicular intersects, and rotating shaft one 14 is parallel to the mirror surface, and the elevation angle of the axis direction of rotating shaft two 15 relative to the horizontal plane can be arbitrarily selected. Condenser 2 can rotate around two axes to track the sun and reflect sunlight to a fixed direction. Condenser 2 is spliced ​​by multi-faceted small reflectors. The light emitted by the sun is projected onto the measured condenser 2 and reflected to the receiving screen 3 by a small reflector. The receiving screen 3 is a plane coated with a diffuse reflection material or a plane with a certain light transmittance, the size of the receiving screen 3 is determined according to the size of the measured condenser lens 2, the position and inclination angle of the receiving screen 3 are adjustable, and c...

Embodiment 2

[0024] Depend on image 3 As shown, the solar concentrating mirror surface shape detection device of the present invention includes a light source, a receiving screen and an image acquisition and processing unit. Different from Embodiment 1, the light source is an artificial light source such as a solar simulator 16 capable of producing similar sunlight, such as image 3 As shown, since the position of the solar simulator 16 can be fixed, the condenser 2 can be fixed during the detection and adjustment process of the condenser 2, that is, no tracking operation is required.

Embodiment 3

[0026] Depend on Figure 4As shown, the solar concentrating mirror surface shape detection device of the present invention includes a light source, a plane mirror, a receiving screen and an image acquisition and processing unit. Different from Embodiment 1, the light source is a plane reflector 17 capable of tracking the sun and reflecting sunlight to the detected concentrating mirror surface, such as Figure 4 As shown, since the direction of the light reflected by the plane reflector 17 can be fixed, the condenser 2 can be fixed during the detection and assembly process of the condenser 2, that is, no tracking operation is required.

[0027] The surface shape detection device of the solar concentrating mirror of the present invention realizes the surface shape detection of the large solar concentrating mirror, which is beneficial to improving the optical performance and assembly efficiency of the concentrating mirror. It can detect the solar concentrating mirrors with any s...

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Abstract

The invention relates to the field of mirror surface detection, and particularly relates to a surface shape detection device for a solar condensing mirror. The surface shape detection device comprises a light source, a receiving screen and an image acquisition processing unit; the detected condensing mirror reflects the light emitted by the light source to the receiving screen; the receiving screen forms images with the received light and reflects the images to the image acquisition processing unit; and the image acquisition processing unit acquires the images on the receiving screen and processes the acquired images. The device implements the surface shape detection on a large-scale solar condensing mirror, is high in precision, fast in speed and easy to operate, and can avoid deformation of the mirror surface caused by hoisting after detection on the ground; the device has a wide application range; the device can perform surface shape detection on all the condensing mirrors in a solar condensing field, thereby reducing detection cost; the device can synchronously evaluate the quality of the surface shape of the mirror; and the device uses a non-contact detection method, thus having no damage on the mirror surface.

Description

technical field [0001] The invention relates to the field of mirror detection, in particular to a solar concentrating mirror surface shape detection device. Background technique [0002] In the field of solar energy utilization, in order to effectively collect solar radiation, large solar concentrators are required. The size of the daylight opening of a large-scale solar concentrator is generally a few meters to more than ten meters. The mirror surface is supported by a steel frame. The reflector is generally a silver-plated glass mirror. The overall surface shape is a curved surface. The surface shape and splicing angle error of the reflector determine the optical performance of the condenser. The surface shape error of the condenser mirror is expressed by the deviation angle between the normal direction of a certain point on the mirror surface and the ideal normal direction of the point, and the unit is mrad. According to the technical characteristics of the solar concen...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCF24S23/70F24S80/00Y02E10/40
Inventor 魏秀东卢振武
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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