Multi-stage drainage system for photovoltaic module

Abstract

The invention relates to the technical field of photovoltaic module drainage, in particular to a photovoltaic module multi-stage drainage system which comprises longitudinal drainage grooves arranged between adjacent photovoltaic modules; the transverse drainage grooves are formed between the adjacent photovoltaic modules, the longitudinal drainage grooves are fixedly lapped on the transverse drainage grooves, confluence ports are formed in the transverse drainage grooves in a penetrating mode, and the width of the longitudinal drainage grooves is smaller than that of the transverse drainage grooves; the longitudinal confluence groove is suitable for being arranged in parallel with the long edge of the photovoltaic module, the longitudinal confluence groove is aligned with the confluence opening, the longitudinal confluence groove is suitable for being fixedly installed on the back face of the photovoltaic module, and the width of the longitudinal drainage groove is not larger than half of the width of the longitudinal confluence groove; and the longitudinal confluence groove is fixedly lapped on the transverse main water tank. Through a four-stage step-by-step confluence drainage path, the drainage efficiency is guaranteed, the width of the longitudinal drainage grooves is reduced, the overall material cost of the photovoltaic module multi-stage drainage system is reduced, and meanwhile the wind uplift resistance and safety of the system are improved.

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