Degassers

Claim 2

A degasser for separating from a liquid gas bubbles contained in the liquid, the degasser comprising a vertical inlet duct, an outlet duct disposed above the inlet duct as an extension of the latter, the lower end of the outlet duct being spaced from the upper end of the inlet duct whereby to provide a gap therebetween, a chamber of annular shape surrounding said ducts and said gap, and a plurality of mesh filters housed in the inlet duct, the upper filter being fixed around the periphery of the lower end of the outlet duct, each filter having upwardly inclined walls, such that the liquid passes through these walls whereas the gas bubbles are deflected by the walls and pass upwardly along the underside thereof and through said gap into said chamber.

Claim 3

A degasser according to claim 1, wherein each filter has the shape of an inverted cone whose apex is disposed on the common axis of the ducts.

Claim 4

A degasser according to claim 2, wherein the cones have the same angle at their apices.

Claim 5

A degasser as claimed in claim 1, wherein the ducts have a flared out shape at the level of the annular chamber.

Claim 6

A degasser as claimed in claim 1, wherein there is provided means for regulating the level of the liquid in the annular chamber.

Claim 7

A degasser according to claim 5, wherein the means for regulating the level of liquid in the annular chamber comprises a tube of predetermined flow area leading to the free air. A degasser according to claim 5, wherein the means for regulating the level of liquid in the annular chamber comprises a valve controlling communication between the chamber and the free air, and a float member operatively connected to the valve.

Claim 8

A degasser for separating from a flowing liquid gas bubbles contained in the liquid, the degasser comprising a vertically disposed inlet duct, a vertically disposed outlet duct disposed above the inlet duct, said ducts being substantially aligned with each other and having their adjacent ends spaced apart to define a gap therebetween, an annular chamber coaxially secured around the adjacent ends of the ducts and communicating with the interior of the ducts via said gap, and a plurality of spaced-apart, substantially conically-shaped filters disposed in the inlet duct, the filters being arranged coaxially of the inlet duct with their respective apices downwardly disposed, the periphery of the upper filter being sealingly fixed around the periphery of lower end of the outlet duct, whereby the liquid passes from the inlet duct to the outlet duct through the filters whereas the gas bubbles are deflected by the filters to pass radially outwardly and upwardly along the underside of the filters, and through said gap into said chamber.

Claim 9

A degasser for separating from a flowing liquid gas bubbles contained in the liquid, the degasser comprising a vertically disposed inlet duct, a vertically disposed outlet duct disposed above the inlet duct, said ducts being substantially aligned with each other and having their adjacent ends spaced apart to define a gap therebetween, an annular chamber coaxially secured around the adjacent ends of the ducts and communicating with the interior of the ducts via said gap, and a plurality of spaced-apart, substantially conically-shaped filters disposed in the inlet duct, the filters being arranged coaxially of the inlet duct with their respective apices downwardly disposed, the periphery of the upper filter being sealingly fixed around the periphery of lower end of the outlet duct, whereby the liquid passes from the inlet duct to the outlet duct through the filters whereas the gas bubbles are deflected by the filters to pass radially outwardly and upwardly along the underside of the filters, and through said gap into said chamber.