Structure with primary-reflector securing beams

Abstract

Structure with primary-reflector securing beams for a solar collector, which comprises the following essential components: at least two components ( 1 ) located in a parallel manner, which comprise a three-bar frame ( 11 ) in the form of an equilateral triangle, positioned such that one of the vertices ( 13 ) thereof is the lowest point of the structure, and which has three shorter interior bars ( 12 ) located so as to simulate the triangle having an inscribed hexagon, within which runs the central tube of the structure, or torque box; two cantilever beams ( 2 ) in each triangle with bars ( 1 ), one beam starting from one of the sides of the triangle and the other from the other, said beams being completely symmetrical and it being possible for said beams to be produced from tubes or a stamped metal sheet; at least two straps ( 3 ) that run along the structure longitudinally, i.e. parallel to the torque box and to the absorber tube, and perpendicular to the cantilever beams ( 2 ), joining the entire series of the two above components ( 1, 2 ), which are repeated along the structure.

1 . Structure with primary-reflector securing beams for a solar collector, characterized in that it comprises the following essential components:
 At least two components ( 1 ) located in a parallel manner, which comprise a three-bar frame ( 11 ) in the form of an equilateral triangle, positioned such that one of the vertices ( 13 ) thereof is the lowest point of the structure and which has three shorter interior bars ( 12 ) located so as to simulate the triangle having an inscribed hexagon, within which runs the central tube of the structure o torque box;   two cantilever beams ( 2 ) in each triangle with bars ( 1 ), a beam starts from one of the sides of the triangle and the other beam from the other, being completely symmetrical;   at least two straps ( 3 ) that run along the structure longitudinally, i.e. parallel to the torque box and to the absorber tube, and perpendicular to the cantilever beams ( 2 ), joining the entire series of the two above components ( 1 ,  2 ), which are repeated along the structure.   
     
     
         2 . Structure with primary-reflector securing beams for a solar collector according to  claim 1  characterized in that the cantilever beams ( 2 ) are made from steel rectangular tube profiles. 
     
     
         3 . Structure with primary-reflector securing beams for a solar collector according to  claim 2  characterized in that two tubes ( 21 ,  22 ) are used for producing each beam ( 2 ). 
     
     
         4 . Structure with primary-reflector securing beams for a solar collector according to  claim 3  characterized in that the tubes ( 21 ,  22 ) have different lengths. 
     
     
         5 . Structure with primary-reflector securing beams for a solar collector according to  claim 4  characterized in that the shorter tube ( 21 ) is joined to the triangular component ( 1 ) by one of its upper vertices ( 14 ) and runs at a certain angle until the other extremity reaches a higher position. 
     
     
         6 . Structure with primary-reflector securing beams for a solar collector according to  claim 5  characterized in that the longer tube ( 22 ) starts at the lowest vertex ( 13 ) of the triangular component ( 1 ) and ends in what constitutes the highest point of the entire structure, there being a junction, at an intermediate point of its length, securing the extremity of the shorter tube ( 21 ) onto it. 
     
     
         7 . Structure with primary-reflector securing beams for a solar collector according to  claim 1  characterized in that the cantilever beams ( 2 ) are produced from stamped metal sheet ( 23 ). 
     
     
         8 . Structure with primary-reflector securing beams for a solar collector according to  claim 7  characterized in that the securing to the triangle of the cantilever beam ( 2 ) is carried out with rivets or an equivalent fastening mean along the entire side of the pertinent triangle ( 11 ). 
     
     
         9 . Structure with primary-reflector securing beams for a solar collector according to  claim 8  characterized in that the metal sheet forming the cantilever beam is provided with a series of bores or gaps ( 24 ) calculated so as to minimize the weight of the structure and to reduce the wind loads. 
     
     
         10 . Structure with primary-reflector securing beams for a solar collector according to  claim 1  characterized in that the triangular component with interior bars ( 1 ) is built using hot-rolled angles. 
     
     
         11 . Structure with primary-reflector securing beams for a solar collector according to  claim 1  characterized in that the longitudinal straps ( 3 ) are made from cold-rolled “C”-profiles. 
     
     
         12 . Structure with primary-reflector securing beams for a solar collector according to  claim 1  characterized in that a series of staples ( 31 ) are placed on the straps ( 3 ) for securing the mirrors that make up the primary reflector, forming thus a spatial structure that supports the mirrored parabola.