This invention relates to the field of condensate
recovery technology, specifically a closed-loop condensate
recovery device, comprising a tank with a water outlet
pipe at the bottom. The tank is divided into three zones—a central steam
buffer zone, a lower condensate collection zone, and an upper negative pressure condensation zone—by two horizontal baffles. This closed-loop condensate
recovery device eliminates the need for additional power components such as pumps. It relies on the downward
pressure difference of the condensate in the negative pressure condensation zone and the negative pressure generated by
steam condensation as the drainage driving force. It fully utilizes the
system's own energy, eliminating dependence on external power and significantly reducing
operating energy consumption. The condensate introduced by the downward pressure drainage
pipe creates a downward
impact, which, combined with the negative pressure introduced by the negative pressure venting
pipe, forms a dual drainage drive, providing stronger power and higher efficiency than traditional single
gravity drainage. Simultaneously, it drives the condensate in the pipe to repeatedly flush, comprehensively covering the entire pipe area and thoroughly removing impurities and
silt from different sections, offering better anti-clogging performance than unidirectional disturbance.