Parabolic concentrating solar collector

A parabolic concentrating solar collector, which being of the type that includes a parabolic reflective surface associated with programmed and/or calculated solar tracking means in real time, as well as an element on which solar radiation is concentrated, wherein the element on which solar radiation is concentrated is made of a vacuum tube, with its corresponding duly insulated inlet and outlet of fluid to be heated, with the particularity that the vacuum tube is statically arranged on a frame, having envisaged that the parabolic reflective surface includes complete and controlled pivoting means with respect to the imaginary central longitudinal axis of the vacuum tube, in which bushings or bearings through which the pipes associated with the inlet and outlet of the vacuum tube pass participate, not being affected by the angular movements of the parabolic reflective surface, with the particularity that the chamber through which the fluid to be heated circulates in the vacuum tube is subdivided into two concentric chambers, an internal chamber, through which the cold fluid is fed, open at one of its ends through which it communicates with an external chamber, concentric to it, on which solar radiation is concentrated inside the vacuum tube,

• having envisaged that the inlet section to the internal chamber is the same as the outlet section of the external chamber and wherein the parabolic reflection surface includes passive safety means against strong winds, made up of sectors, of a reflective nature, as folding gates with respect to axes against the tension of a spring.