Patent ID: 9157658
Filing Date: 2015-10-13
Classification: F24S,Y02E

Abstract:
1. A parabolic trough collector apparatus having a longitudinal direction, comprising: a parabolic trough collector having at least one panel with a parabolic cross section and a dimension extending in a straight line in the longitudinal direction, a reflecting surface arranged on the at least one panel and defining a focal line, and an absorber extending along the focal line, wherein the reflecting surface concentrates sunlight on the absorber; a supporting construction connected in an articulated manner to a substructure carrying the parabolic trough collector, the supporting construction comprising at least three supporting ribs arranged at a convex underside of the at least one panel and extending transversely to the longitudinal direction of the parabolic trough collector, the supporting ribs comprising alternatingly disposed stanchion-supporting ribs and adjacent ribs, each of the stanchion ribs being disposed between two of the adjacent ribs; a stanchion extending upwardly at every stanchion-supporting rib of the at least three supporting ribs, whereby the adjacent ribs are arranged without stanchions extending therefrom; a rotary bearing arranged at each supporting rib of the at least three supporting ribs and configured so that the parabolic trough collector is pivotable about a pivot axis which extends parallel to the longitudinal axis; a plurality of elongated force transmission devices arranged at the stanchion of each respective stanchion-supporting rib and extending between the stanchion and outer end areas of the two adjacent ribs of the respective stanchion-supporting rib, each of the plural elongated force transmission devices forming a lateral edge of a right pyramid, an apex of the pyramid lying in a plane of symmetry of the parabolic reflecting surface and being formed by the convergence of each of the plural elongated force transmission devices at the stanchion; and a cap translatable along the stanchion and connected to each of the plural force transmission devices, wherein the stanchion comprises a spring assembly located below the cap and acting in a direction of the translation of the cap.