Method and apparatus for correcting heliostat

Abstract

Provided are an adjusting method and an adjusting apparatus for adjusting a heliostat on site while actually measuring that a mirror surface of the heliostat and a mirror surface of a center reflector are exactly facing each other. The adjusting apparatus is provided with an irradiation device 3 which irradiates an upper focal point p of a center reflector 30 and a heliostat 20 with laser beams L 1 and L 2, respectively. The elevation angle and/or the turning angle of the heliostat 20 are adjusted so that the reflected light L 4 of the laser beam applied on the heliostat 20 forms the same axial line as the laser beam L 1 applied on the upper focal point p of the center reflector 30.

1 . A method for correcting a heliostat in a heat collecting device including: a center reflector provided in an upper portion thereof; a heat receiving part provided in a lower part thereof; and a plurality of heliostats arranged around the center reflector, the method for correcting a heliostat characterized by comprising the steps of:
 providing an irradiation device irradiating an upper focal point of the center reflector and the heliostat with laser beams, respectively; and   adjusting an elevation angle and/or a turning angle of the heliostat so that a reflected light of the laser beam applied on the heliostat forms a same axial line as the laser beam applied on the upper focal point of the center reflector.   
     
     
         2 . An apparatus for correcting a heliostat in a heat collecting device including: a center reflector provided in an upper portion thereof; a heat receiving part provided in a lower part thereof; and a plurality of heliostats arranged around the center reflector, the apparatus for correcting a heliostat characterized by comprising an irradiation device irradiating the center reflector and the heliostat with laser beams, respectively, the irradiation device being provided on a light path connecting an upper focal point of the center reflector and the heliostat to each other. 
     
     
         3 . The apparatus for correcting a heliostat according to  claim 2 , characterized by comprising:
 a light receiving device detecting a reflection laser beam reflected from the heliostat, the light receiving device being provided in the vicinity of the laser irradiation device side-by-side therewith; and   an adjusting device which turns and elevates the irradiation device and the light receiving device.   
     
     
         4 . The apparatus for correcting a heliostat according to  claim 2 , characterized in that the laser irradiation device is attached to and detached from the correcting apparatus by attachment and detachment means, and is driven by a storage battery. 
     
     
         5 . The apparatus for correcting a heliostat according to  claim 2 , characterized in that the laser irradiation device irradiates the upper focal point of the center reflector with a laser beam having a wavelength in a range of 500 nanometers to 590 nanometers. 
     
     
         6 . The apparatus for correcting a heliostat according to  claim 3 , characterized in that the light receiving device is a sun tracking device.