Patent ID: 9115821
Filing Date: 2015-08-25
Classification: F16K,F16T,Y10S

Abstract:
1. A condensate drainage system, comprising: a compressor or compressor stage, a least one oil/water separator in communication with the compressor or compressor stage, a condensate valve including an inlet which is connected to an outlet of said at least one oil/water separator, a condensate collecting tank connected to an outlet of the condensate valve, and a shut-off valve connected in series with said condensate valve for pneumatically triggering opening and closing of the condensate valve and operative for opening and closing discharge of condensate from the condensate valve to said condensate collecting tank, wherein the condensate valve is constructed so as to also function as a pressure reducer which reduces the pressure of condensate flowing out of the condensate valve, the condensate valve comprising a movable piston having a smaller diameter piston surface on an inlet side in a direction of flow toward the condensate collecting tank that is pneumatically pressable against an inlet opening of a valve seat when the condensate valve is closed and an outlet side in a direction of flow toward the condensate collecting tank having a larger diameter piston surface than that of the smaller diameter piston surface on the inlet side of the piston such that the piston is able to control operating pressure at the inlet side of the condensate valve and for limiting flow of condensate into the condensate collecting tank to a small amount, wherein a stationary cross-sectional constriction is located downstream of the movable piston for controlling and limiting condensate flowing directly into the condensate collecting tank to a small amount, an overflow line connecting the inlet and outlet sides of the piston for enabling condensate to act on both sides of the piston when the condensate valve is open for producing a pressure reduction which is a function of difference in cross-sectional areas of the inlet and outlet sides of the piston.