SUPPORT STRUCTURE FOR A PARABOLIC- LINEAR SOLAR PLANT OF THE CONCENTRATION TYPE AND METHOD FOR ITS MANUFACTURE

摘要

Supporting structure (10) for a parabolic-linear solar plant (14) of the concentrating type, suitable to supporting mirrors (12) with a curved surface, which intercept the sun's rays and directing them towards a receiver member to produce energy, such as a receiver tube (16) in which a heat exchange fluid flows and/or concentration-type pho tovoltaic cells, the receiver member is disposed along a first axis (X) of substantial alignment of the focuses of said mirrors (12). The sup porting structure (10) comprises a supporting shaft (18) that develops parallel to a second rotation axis (Y) parallel to said first axis (X), sup porting centrings (22) of mirrors (12) are mounted along said support ing shaft (18), placed transversal from opposite sides with respect to said supporting shaft (18) in a manner coordinated with the position of said mirrors (12). Each of the supporting centrings (22) has pivot ing ends (26) coupled with the supporting shaft (18). The supporting structure (10) further comprises first positioning blocks (34) disposed along the supporting shaft (18) in a manner coordinated to the dis position of the centrings (22), which have, on opposite sides with re spect to the supporting shaft (18), first supporting faces (36) turning, during the use, towards the centrings (22). Said pivoting ends (26) of the centrings (22) carry second positioning blocks (38) having second supporting faces (40) turning, during the use, towards the support ing shaft (18) and apt to cooperate in beating with the first support ing faces (36). The first supporting faces (36) and second supporting faces (40) have surfaces processed together to define reciprocally co ordinated shapes, so as to ensure the precise positioning of centrings (22) with respect to the supporting shaft (18), so that the mirrors (12) supported by centrings (22) are correctly oriented with their focuses properly aligned along the first axis (X).