Photothermal power station efficient heat exchange device adaptive to high-stability nitryl fused salt

Abstract

The invention provides a photo-thermal power station efficient heat exchange device adaptive to high-stability nitro fused salt, and particularly relates to the technical field of photo-thermal power generation, and the photo-thermal power station efficient heat exchange device comprises a shell, a tube plate assembly, a heat exchange tube, a flow guide plate, a sliding hinge assembly and a pull rod assembly. The shell is formed by sealing an upper cone, a middle cylinder section and a lower cone. The tube plate assembly comprises an upper tube plate and a lower tube plate and is correspondingly provided with working medium inlets and outlets. The heat exchange tube is made of fused salt corrosion resistant materials and is a spiral fin type hollow tube, deep micro-rib threads are arranged on the inner wall of the heat exchange tube, and the two ends of the heat exchange tube are welded to insert tube holes in the tube plate. The flow guide plate is in a wear-resistant spiral type, is arranged along the tangent line of the inner wall of the shell and axially slides through the sliding hinge assembly and the pull rod assembly. Through optimization of a sealing structure, selection of a corrosion-resistant and wear-resistant material and design of a flow channel, the device adapts to the high-temperature corrosion working condition of nitro molten salt, can improve the heat exchange efficiency and the structural stability, and is suitable for nitro molten salt heat exchange scenes of a photo-thermal power station.

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