Two-stage convergent solar energy concentrator system with decompressing and thermal stress reducing functions

Having two converging solar concentrating system pressure and reduce thermal stress function, belonging to the technical field of solar concentrating system with a receiver. In order to solve the conventional two convergent solar concentrating system problems due to track the movement of the sun and cause leakage of the high strength requirements of the mirror holder field problems, and a tube receptacle in the process of tracking the sun presence. Disposed at two hyperbolic converging surfaces and a converging surfaces parabolic trough, the trough surface and two hyperbolic converging surfaces converging a parabolic surface coated with a reflective coating, the reflective coating is aluminum vacuum or polishing the silver coating deposited film, two pairs of curved surfaces converging focal point focus parabolic trough a converging surface coincides with the focus of a parabolic trough type two pairs of converging curved surface converging surface center point coincide, the receiver tube is mounted at the centerline of a trough converging parabolic surface. The present invention for high temperature solar energy conversion.