GB843329A - Improvements in the separation of gases occluded in liquids - Google Patents

Abstract

<PICT:0843329/III/1> The conduit 1 is full of air, the gridiron valve 3 is in its lower position and closes the aperture 2b, and the float 2 rests on the valve 3b and consequently opens the aperture 3c. When the pump (not shown) is started, the liquid delivered enters the chamber 2, and the float 4 closes the aperture 3c with its peg 4a, the air present in the chamber 3 having been forced through the apertures 3c and 2c into the separator 5. Since the liquid no longer has an exit, it exerts a pressure on the lower face of the piston 3a which it raises. As a result, the valve 3b opens the aperture 2b and the liquid passes through the conduit 6 and enters the separator 5. If the quantity of gas which is separated from the liquid in the chamber 2 is greater than that which can pass through the apertures 3c and 2c, the gases accumulate, the float 4 travels towards its position of rest on the valve 3b and prevents the pump from supplying liquid to the separator 5 through the conduit 6. However if the quantity of gas which is separated from the liquid in the chamber 2 is less than that which can pass through the apertures 3c and 2c, the float 4 can rise again and close the aperture 3c. The piston 3a, the two faces of which are at different pressures, rises and is accompanied by the float 4. The liquid charged with air then enters the separator 5 through the aperture 2b and the conduit 6. Thus by suitable selection of the dimensions of the gridiron valve 3, the specific weight of the float 4, and the dimensions of the apertures 3c and 2c, it is possible to cause the interruption in the supply to the separator 5 when the quantity of gas conveyed thereto per unit of time is greater than that which it can separate during said unit of time. Specification 817,925 is referred to.