Gas separating device

A device for separating gas from a liquid sample stream containing gas comprising

• a housing defining an elongated vertical chamber having a circular cross section and top and bottom portions;
• a tangential fluid inlet in said housing for introducing the sample stream into the top portion of said chamber;
• a tangential liquid outlet in said housing through which the liquid portion of the sample flows from the bottom portion of said chamber;
• an elongated, tubular-like gas separator unit generally centrally located in the top portion of said chamber, said gas separator unit including a lower end opening into said chamber and an upper end and further including a spirally extending wall having an outer surface spaced radially inwardly from the chamber wall to define an annular passage open to said inlet, said spiral wall further having an inner surface, a first side edge located in the vicinity of said inlet, and a second side edge to define a vertically extending opening therebetween;
• a laterally extending anti-vortexing baffle disposed inside said spiral wall;
• and
• a gas outlet opening into the upper end of said gas separator unit and including a gas flow restricting means, whereby the sample stream entering through said inlet initially flows circumferentially through said annular passage, a substantial portion of the gas bubbles in the sample is separated therefrom and enters into said gas separator unit through said vertical opening, and the gas separated from the sample and collecting inside said gas separator unit exits through said gas outlet with said flow restricting means minimizing the overflow of liquid through said gas outlet.