Stagnation pressure measuring device and method of oxygen lance system

The invention discloses a stagnation pressure measuring device and method of an oxygen lance system and belongs to the technical field of steel smelting. The stagnation pressure measuring device comprises an oxygen main pipe which is connected with an oxygen branch pipe. A pressure taking point is arranged on the oxygen branch pipe. The output end of the oxygen branch pipe is connected with an oxygen soft pipe, and the output end of the oxygen soft pipe is connected with an oxygen lance. One end of the oxygen lance is an oxygen lance end portion, and an equivalent throat is installed at the end portion of the oxygen lance. The equivalent throat is composed of a cylinder barrel and a conical contraction section, a pressure taking hole is formed in the side wall of the cylinder barrel, and the pressure taking hole is connected with a standard pressure gauge through a pipeline. By means of the stagnation pressure measuring device and method, the relation between the pressure of the pressure taking point and the