A linked heliostat

A heliostat and linkage technology, applied in the direction of using feedback control, etc., to achieve the effects of ensuring tracking accuracy, reducing height, and reducing torsional moment

Active Publication Date: 2017-09-12
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only guarantee the accuracy when the focal length is relatively short

Method used

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  • A linked heliostat
  • A linked heliostat
  • A linked heliostat

Examples

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0026] Embodiment one of the present invention: as Figure 1 to Figure 7 As shown, a linkage heliostat is characterized in that it includes an altitude angle driving mechanism 31, and the altitude angle driving mechanism 31 drives at least two mirror modules 21 to perform altitude angle rotation together. The altitude angle driving mechanism 31 Located in the middle position, there are mirror modules 21 on both sides of the elevation angle driving mechanism 31 .

[0027] The mirror module 21 includes a mirror module supporting column 114, a mirror module supporting foot 115, a moment bearing seat 41, an aligning ball bearing 42, a moment shaft sleeve 44, a moment flange 43, and a moment shaft g...

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Abstract

The invention discloses a novel linkage heliostat. The novel linkage heliostat is characterized by comprising an elevation angle driving mechanism, wherein the elevation angle driving mechanism drives at least two reflector modules to commonly do elevation angle rotation movement. The novel linkage heliostat employs combined motion setting of the multiple reflector modules, unit reflectors are connected in series through a torque axis to form a reflector module, the multiple reflector modules are connected through flange discs, the multiple reflector modules are driven to simultaneously move by employing the elevation angle driving mechanism, through reducing height of the reflector modules and the reflection area of the reflector modules to reduce wind load, weight of the reflector modules per a reflection area unit is reduced, mounting and debugging difficulty is reduced, relevant cost is reduced, moreover, the novel linkage heliostat can guarantee tracking precision of multiple unit reflectors in the elevation angle direction, so cost of the elevation angle driving mechanism is further reduced.

Description

technical field [0001] The invention relates to a solar heat utilization and thermal power generation device, in particular to a novel linkage heliostat. Background technique [0002] At present, in the field of solar thermal power generation, tower-type thermal power plants have the advantages of high concentration ratio and high power generation efficiency. A tower-type thermal power station is a mirror field composed of multiple heliostats, which focus sunlight onto the surface of the heat absorber on the tower. The cost of the heliostats accounts for about 50% of the cost of the power station. According to the calculation of Sandia National Laboratory in the United States, when the cost of heliostats is reduced to US$100 per square meter of reflective area, the cost of solar thermal power generation will be 5.9 cents. At this time, solar thermal power generation will be economically comparable to conventional thermal power generation. Therefore, how to reduce the cost o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
Inventor 张剑寒冯炜王志峰
Owner STATE GRID CORP OF CHINA
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