Surface profile detection apparatus of burden in blast furnace and operation method comprising an angle fixed reflection plate to transmit the detection wave from an antenna to the reflection surface of an angle variable reflection plate

A surface profile detection apparatus of a burden in a blast furnace,

• wherein the surface profile detection apparatus is configured to detect a surface profile of the burden such as iron ore, coke, limestone and the like in the blast furnace, to which the burden is supplied by a shooter, by transmitting a detection wave toward a surface of the burden deposited in the furnace and receiving the detection wave reflected on the surface of the burden, through an opening part of the blast furnace,
• wherein the surface profile detection apparatus comprises:
• a rotating plate mounted immediately above the opening part and configured to rotate about an opening center of the opening part as a central axis;
• a rotating means for rotating the rotating plate;
• and
• a transmission and reception means for transmitting the detection wave in a linear shape along a diametrical direction of the rotating plate and receiving the detection wave,
• wherein the surface profile detection apparatus comprises:
• a tubular rotary shaft attached concentrically with an opening of the rotating plate formed at a central part and having an antenna accommodated therein,
• the transmission and reception means mounted above an end portion of the rotary shaft on an opposite side to the opening part and connected to the antenna,
• an angle variable reflection plate disposed in a space between the rotating plate and the opening part, and having a reflection surface whose angle is variable, and
• an angle fixed reflection plate disposed in a space between the rotating plate and the opening part, having a reflection surface whose angle is fixed, and provided so as to transmit the detection wave from the antenna to the reflection surface of the angle variable reflection plate, and
• wherein the angle variable reflection plate and the angle fixed reflection plate are attached to the rotating plate.