Tubular rod and device for sampling and analyzing fumes and apparatus including such device

Device for sampling and analyzing fumes in a duct disposed for the evacuation of fumes, comprising at least one tubular rod mounted on said duct and having a casing including a main part having an axis and comprising means for connection to a source of cooling fluid, an extractor tube having an end part extending in the casing and opening outwardly of the casing by a fume inlet opening and a connection part extending outside the main part of the casing and wherein the fume inlet opening of said extractor tube leads to the trajectory of the fumes inside the duct, and an intermediate tubular member housed in the casing and surrounding the end part of the extractor tube, the intermediate tubular member being spaced from the casing and from the extractor tube to define with the casing and with the extractor tube an inner circuit for the cooling fluid.

Apparatus for the production of steel or ferro-alloys comprising an arc furnace provided with a duct for the evacuation of fumes and a device for sampling and analyzing said fumes ,said device comprising at least one tubular rod mounted on said duct and having a casing including a main part having an axis and comprising means for connection to a source of cooling fluid, an extractor tube having an end part extending in the casing and opening outwardly of the casing by a fume inlet opening and a connection part extending outside the main part of the casing and wherein the fume inlet opening of said extractor tube leads to the trajectory of the fumes inside the duct, and an intermediate tubular member housed in the casing and surrounding the end part of the extractor tube, the intermediate tubular member being spaced from the casing and from the extractor tube to define with the casing and with the extractor tube an inner circuit for the cooling fluid.

Apparatus for the production of steel or ferro-alloys comprising an arc furnace having a displaceable vault including a fumes duct section and a fumes exhaust duct having an inlet end, said fumes duct section positioned, in operating the arc furnace, in registration with the inlet end of the fumes exhaust duct defining an intermediary space therebetween, and a fume sampling unit mounted on the inlet end of the fumes exhaust duct and including a tubular casing having a lateral wall and opposite inlet and outlet for a cooling fluid, an extractor tube having an end part extending in the casing and opening outwardly of the lateral wall of the casing by a fume inlet opening, the casing positioned within the intermediary space with the opening of the extractor tube facing the inlet end of the fume exhaust duct.

Device according to claim wherein the tubular rod is connected to the water analyzer by means of a circuit including insulation and heating means.