Measuring method and measuring apparatus for the thickness of molten layer of mold powder and fluctuation of liquid level of molten steel

The invention provides a measuring method and measuring apparatus for the thickness of a molten layer of mold powder and fluctuation of liquid level of molten steel. The measuring device comprises a tripod assembly, a metal rod, a plurality of metal wires, a tripod fixing device, a horizontal locator and a rotatable metal screw. The horizontal locator comprises a horizontal locating sheet metal and at least one scale. The tripod assembly comprises a tripod and a tripod fixing plate, a tripod fixing device comprises a vertically lifting adjusting screw and a rotatable head, and the vertically lifting adjusting screw is threaded to the tripod fixing plate. The rotatable metal screw is horizontally fixed to the vertically lifting adjusting screw, and the plurality of metal wires are arranged in the direction of rotatable metal screw and threaded to the rotatable metal screw at intervals. The horizontal locating sheet metal is fixed to the rotatable metal screw, and the scale is perpendicularly welded to the metal rod at intervals. By adopting the measuring method and the measuring apparatus, the thickness of a molten layer can be accurately measured, and the fluctuation of the liquid level of the molten steel can be reflected.