Polar shaft type Fresnel line focusing device

Abstract

The invention discloses a polar shaft type Fresnel line focusing device. The polar shaft type Fresnel line focusing device comprises a fixed support assembly and a polar shaft rotating assembly, wherein the fixed support assembly comprises an inclined plane base parallel to an earth axis, the inclined plane base is used for connecting and supporting the polar shaft rotating assembly and a mirror surface assembly, the polar shaft rotating assembly comprises a polar shaft rotatably connected with the inclined plane base and a U-shaped support connected and fixed to the polar shaft, and the polarshaft is connected with a rotation driving mechanism used for driving the polar shaft to rotate to track the lighting direction; and the device further comprises sliding guide rails connected to theU-shaped support, sliding blocks in sliding fit with the sliding guide rails, and a Fresnel linear focusing lens, wherein the Fresnel linear focusing lens is connected with the sliding blocks. According to the device, the design of adjusting the angle of a mirror surface is simplified, the polar shaft is designed to be rotatable, rotation of the polar shaft is precisely and controllably controlledby the rotation driving mechanism, so that the angle of the U-shaped support connected with the polar shaft is directly driven to change, the lens on the U-shaped support continuously keeps facing the incident direction of sunlight, and the sunlight is always converged on heat collecting pipes.

Description

technical field [0001] The invention relates to the technical field of solar energy, and more specifically, relates to a polar-axis Fresnel line focusing device. Background technique [0002] In the field of solar concentration, the traditional polar axis tracking method is to make the polar axis parallel to the earth's axis, and make the polar axis generate an angular velocity of 15° per hour, opposite to the earth's rotation direction, to offset the earth's rotation, according to the season Or monthly to adjust the pitch angle of the mirror regularly. [0003] This traditional design mainly has the following disadvantages when adjusting the pitch angle: [0004] First, it is necessary to adjust a series of components including mirrors, frames, connectors and vacuum heat collecting tubes, which is inconvenient to operate manually. Second, when adjusting the pitch angle, its movement mode is spatial rotation, so more space is needed to complete the adjustment action, resul...

AI Technical Summary

Problems solved by technology

Second, when adjusting the pitch angle, its movement mode is spatial rotation, so more space is needed to complete the adjustment action, resulting in a complex overall structure of the device, a large footprint, inconvenient use and adjustment, and a low degree of automation

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