Pressure vessel venting device

Claim 1

APPARATUS FOR AUTOMATICALLY DISCHARGING NON-CONDENSIBLE GAS FROM A PRESSURE VESSEL CONTAINING A LIQUID WHICH DEPOSITS SCALE UPON CONTRACTED SURFACES, WHEREIN SAID GAS COLLECTS IN THE UPPER REGIONS OF SAID VESSEL AND HAS ASSOCIATED THEREWITH A CONDENSIBLE VAPOR, COMPRISING IN COMBINATION WITH SAID PRESSURE VESSEL AND ADJACENT THERETO A GAS DISCHARGE MEANS, WHICH INCLUDES: A CLOSED CHAMBER COMPRISING A FLOAT VALVE MECHANISM AND A GAS OUTLET POSITIONED ABOVE THE FLOAT OF SAID FLOAT VALVE MECHAANISM, WHEREBY SAID GAS OUTLET IS OPENED AND CLOSED BY SAID FLOAT VALVE MECHANISM, A FIRST CONDUIT MEANS WHICH INCLUDES CONDENSING MEANS EXTENDING FROM THE UPPER REGIONS OF SAID VESSEL AND TERMINATING ABOVE THE FLOAT OF SAID FLOAT VALVE MECHANISM IN SAID CHAMBER, WHEREBY SAID GAS AND CONDENSIBLE VAPOR ARE DELIVERED FROM THE UPPER REGIONS OF SAID VESSEL TO SAID CHAMBER AND BECOME SEPARATE THEREIN AND WHEREBY A LIQUID RESERVOIR OF CONDENSED VAPOR IS FORMED IN SAID CHAMBER AND SAID NON-CONDENSIBLE GAS IS DISCHARGE THROUGH SAID GAS OUTLET, A SECOND CONDUIT MEANS POSITIONED BELOW THE FLOAT OF SAID FLOAT VALVE MECHANISM AND BELOW SAID FIRST CONDUIT MEANS WHICH INCLUDES A LIQUID TRAP AND EXTENDING BETWEEN SAID CHAMBER AND SAID VESSEL, WHEREBY SAID CONDENSED LIGUID IS RETURNED TO SAID VESSEL THROUGH SAID SECOND CONDUIT MEANS, AND WHEREBY THE LEVEL OF SAID LIQUID IN SAID RESERVIOR WILL FLUCTUATE RESPONSIVE TO THE LEVEL OF SAID LIQUID IN SAID PRESSURE VESSEL.