GAS LEAKAGE PREVENTER OF SEAL POT

摘要

PURPOSE: A gas leakage preventer for a seal pot is provided to intercept discharge of noxious gas through a discharge pipe even when supplement water is under a specific level, to prevent leakage outward and to reduce the use of supplement water and condensate processing amount for decreasing equipment maintenance costs. CONSTITUTION: Supplement water is filled in a container(15) embedding a float member(14) via a supplement water supply line(9). A discharge port(11) is sealed off by a bottom of a center shaft(16) of the float member. When opening a valve(2), noxious gas, condensate water and foreign matters such as tar are introduced into the container. Condensate water and tar are mixed with the supplement water to increase level of the container and noxious gas is filled in a rest space of the container. As discharged amount of the condensate water increases, a water level ascends inside the container while the float member ascends. And the bottom end of the center shaft is separated from the discharge port for discharging condensate water and supplement water. Herein, upper sliding members of upper link bars(34,34a) are narrowed inside a guide groove of upper rail(31) and an interval intermediate the upper rail and a middle rail(41) is widened. A stopper(39) fixed on the upper rail increases toward a discharge pipe(3) to intercept condensate water and noxious gas from being discharged from the discharge pipe by sealing off an outlet end.