SU885738A1 - Method of stand aligning of solar energy concenrator facets - Google Patents

Description

(54) METHOD OF STAND ALIGNMENT OF BLOCKS OF SOLAR RADIATION CONCENTRATOR FACETTE

one

The invention relates to solar technology, particularly to methods for bench alignment of blocks of solar radiation concentrators used mainly for large-sized solar furnaces with a capacity of 1-10 MW.

The known method of bench alignment of the blocks of the solar radiation concentrator blocks is that each faceted block is placed on the stand in the design position, the facets are illuminated with a diverging light beam from the source, which is set in the design focus of the block being adjusted, and the position of each facet in the block is corrected by combining the autocollimation image of the source obtained using a flat mirror with the focus of the block D. "

In the process of aligning the blocks with a fatt in a known manner, thermal deformations of the stand and its elements can occur, for example, turning the plane: a mirror or the supporting structure of an adjustable block facets.

These displacements are not taken into account in a known manner and lead to alignment errors, which, in turn, reduce the concentration coefficient, the radiation of the solar furnace.

The purpose of the invention is to increase the accuracy by eliminating the effect of deformation of the bench during alignment.

The goal is achieved by correcting the position of each fascia, the central facet of the unit being adjusted with an additional source is illuminated with a collimated light beam in a direction parallel to the optical axis of the concentrator, and the image of the additional source is aligned with the focus of the unit and rotated The mirrors combine the autocollimation image of the source of the divergent 3 light beams with the image of the additional source. The drawing shows the optical layout of the stand, by means of which the method of bench alignment of the facet blocks, the solar radiation concentrator is carried out, which means that each adjusted unit 1 facet is set in the stand to the design position, illuminate the power consumption of each beam with 2 lights from source 3, which is set in the design focus F of the adjustable block 1, and corrects the position of each facet in block 1 by aligning the autocollimation image of source 3, obtained with the help of a flat mirror 4, with the focus ohm F Unit 1. Before adjusting the position of the center of each facet. The facet 5, selected as a support in the adjustable block 1, is illuminated with an additional source 6 by a collimated beam 7 of light in a direction parallel to the optical axis 8 of the concentrator, and by rotating the slot 1 relative to the top of the central facet 5 by focusing F of block 1a, rotating the flat mirror 4 aligns the autocollimation image of source 3 with the image of additional source 6. The method is carried out as follows. On the stand., Incl. yourself a stand (supporting structure), install the facet block to be adjusted. The central facet 5 of unit 1 is taken as the reference facet and illuminated with a collimated beam of light 7 from the additional source 6. The direction of the beam of light 7 is chosen parallel to the optical axis 8 of the concentrator. If block 1 occupies a strictly design position, the collimated beam 7, having reflected from the central facet 5, will pass through the calculated point - the focus. F of block 1, which is determined by f Y, arctg, -4 - cosZi - sin 2i arctg de I - the angle between the normal to the top of the center facet 5 of the adjusted block 1 and the direction -. by focus on the concentrator (specified by the project)}, d is the distance from the top of the central facet 5 of the adjusted block 1 to the focus of the concentrator (specified by the project); S) L is the length of segments, respectively, laid on the axis x Y, X. Cartesian coordinate system of the stand from the center of coordinates, located at the top of the facets 5, with the Y axis chosen parallel to the optical axis 8 of the hub; ef, are, respectively, the angles between the coordinate axes Y, X and the direction to the focus F of the block I being adjusted, and the vertices of these angles lie at the ends of the segments S, L. When the adjusted block 1 deviates from the design position, beam 7 does not fall into focus F. In this case, by rotating the block 1 around the top of the central facet, 5 facets are crushed-. nor the image of the additional source 6 with the focus F. Then, in focus F, the source 3 of the divergent beam 2 of the light is installed and directed to the central facet 5, until the flat mirror 4 rotates the autocollimation image of the source 3 with the source 6, then you can consider the bench otsustirovannym and proceed to correcting the position of the facets in block 1. This is done by lighting the facets to be adjusted by blocking the light 2 from the source 3 by block 3. Naturally, the transverse dimension The beam of beam 2 must not exceed the size of one facet. By adjusting the position of the adjustable facet of unit 1, the autocollimation image of source 3 is combined with the additional source. Thus, the illumination of the central facet of the unit I to be adjusted by means of a collimated beam 7 of light from the additional source 6 in a direction parallel to the optical axis 8 of the concentrator allows differentiating the amount of de-alignment per connector alignment of the stand itself.

Claims (1)

Claim The method of bench alignment of the facet blocks of the solar concentrator, namely, that each adjustable facet block on the stand is in the design position, 15 illuminate the facets with a diverging beam of light from the source, which is installed in the design focus of the aligned block and adjust the position of each facet in the block by combining 10 autocolpation image of the source obtained using a flat mirror with the focus of the block, characterized in that, in order to improve accuracy by eliminating the influence of def During alignment, before adjusting the position of each facet, the central facet of the unit being adjusted is illuminated using an additional source with a collimated beam of light in the direction parallel to the optical axis of the concentrator, and by rotating the unit relative to the top of the central facet, the image of the additional source is combined with the focus of the unit, and the plane mirror is aligned by rotation autocollimation image of a divergent source. light beam with an image of an additional source.