Pipeline tensioning device

The utility model provides a pipeline tensioning device comprising fixed supports, sliding supports, pull rods on branch pipes and pull rods on a horizontal pipeline; each support is welded and fixed with a platform; two ends of the pull rods on the branch pipes are respectively connected with a hot blast furnace shell and the supports through pin shafts, wherein the supports are welded on the horizontal pipeline; and the pull rods on the horizontal pipe are respectively connected with the supports through connecting pieces. In order to tension a pipeline among a hot blast furnace, a mixing chamber and a compensator, the diameters and the lengths of pull rods on various pipelines are determined firstly through calculation and each support is welded and fixed with the platform; then, two ends of the pull rods on the branch pipes are respectively connected with the hot blast furnace shell and the supports through the pin shafts, wherein the support is welded on the horizontal pipeline; and finally, the pull rod