Heat collecting tube combined solar high-temperature direct steam heat collection device

The invention relates to a heat collecting tube combined solar high-temperature direct steam heat collection device, which comprises a preheating section, a saturation section, a steamwater separator and a superheat section which are communicated sequentially, wherein the preheating section is formed by connecting a plurality of low-temperature vacuum glass-metal heat collecting tubes in series by a pipeline of the preheating section; the saturation section is formed by connecting a plurality of non-vacuum coating straight-through heat collecting tubes in series by a pipeline of the saturation section, and the superheat section is formed by connecting a plurality of high-temperature vacuum glass-metal heat collecting tubes in series by a pipeline of the superheat section; the lower end of the steamwater separator is communicated with an inlet of the saturation section by a recirculation pipeline, and a recirculation pump is arranged on the recirculation pipeline. According to the heat collecting tube combined solar high-temperature direct steam heat collection device, the influence of water or water vapor in different states on the heat collecting tubes is avoided, the adverse influence of gas-liquid two-phase flow on the heat collecting tubes is eliminated, and the problems of large heat loss and low temperature of the heat collecting tubes of the superheat section are solved.