Novel disc type light collecting lens structure

Abstract

The invention belongs to the field of a disc type solar disc lens structure, in particular to a novel disc type light collecting lens structure. The novel disc type light collecting lens structure comprises an upright post, a rotary mechanism, a bracket, a backboard, a light collecting lens and a heat absorber; the upright post is connected with the backboard through the rotary mechanism; the rotary mechanism is used for driving the backboard to track the sunshine; the backboard comprises a circular base plate and a plurality of circle of lens bases which are fixed to the base plate; each lensbase is provided with an annular arc surface; the axial section of each annular arc surface is a part of a parabola; the light collecting lens consists of a plurality of lenses; the lenses are closely adhered to the annular arc surfaces; the annular arc surfaces can be used for gathering the incident light from a direction vertical to the base plate to a focus position by reflection of the lenses; and the focus and the heat absorber are at the same position. The light collecting lens of the novel disc type light collecting lens structure provided by the invention consists of different circlesof lenses which are arranged; the lens surfaces at each circle consist of a plurality of lens surfaces which are the same in shape and are closely arranged; the lenses at the same circle can be manufactured by using a same set of mold, so the production procedures are simplified, and the light collection efficiency is improved.

Description

technical field [0001] The invention belongs to the field of dish-type solar dish mirror structures, and in particular relates to a novel dish-type condenser mirror structure. Background technique [0002] Photothermal power generation is a new energy technology supported and promoted by the state. Common photothermal power plant concentrating technology directions include tower concentrating methods, trough concentrating methods, Fresnel concentrating methods, and dish concentrating methods. The present invention On the basis of dish condenser technology, it refers to and absorbs the advantages of Fresnel condenser technology, and combines and further improves the two technologies to form a new dish condenser structure. [0003] The tower-type concentrating technology consists of a large heat-absorbing tower and a large number of concentrating mirrors. The concentrating mirrors are distributed on the ground. All the concentrating mirrors track the sun separately, reflect an...

AI Technical Summary

Problems solved by technology

[0009] 2. The processing requirements for brackets, backplanes and other accessories are correspondingly increased, and the requirements for on-site installation and debugging are high

That is, the high-precision requirements of the dish condenser put forward corresponding high requirements for each link of production, processing, installation, and debugging, which also leads to an increase in the difficulty and cost of implementation of each link;

[0010] 3. Application limitations caused by the dish mirror structure itself

All the lenses of the dish condenser are closely attached without leaving any gaps, and the section of the entire condenser is parabolic. Such a shape and structure lead to a large unbalanced moment caused by the wind force on the entire dish mirror. The larger the dish mirror, the greater the impact. As a result, on the one hand, when selecting the motor and slewing mechanism to drive the disc mirror to rotate, it is necessary to select a model with a large margin for strong wind conditions, which increases the additional cost of the control system. On the other hand, it is difficult to make a disc mirror due to safety and cost considerations. Very large, the diameter of the common dish condenser is less than 10 meters, and the thermal power is less than 40KW

[0011] 4. Additional losses caused by dish mirror structure

In order to realize the tracking of the sun by the dish condenser, it is necessary to leave a gap for the column under the condenser, so that the dish mirror can realize the rotation in the direction of the altitude angle, and the mirror cannot be laid on the gap, which causes additional loss in the use of sunlight

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