Measuring apparatus for measuring height of foreign substance in pipe

A measuring device for measuring a height of foreign substance in a pipe comprising:

• an ultrasonic transmitting unit disposed in a first region of an outer surface of the pipe through which the fluid passes inside thereof, and including an ultrasonic generator generating ultrasounds, a first transmission medium unit disposed between the ultrasonic generator and the first region, a second transmission medium unit disposed between the first transmission medium unit and the first region and contacting the first region, and a first ultrasound type conversion unit formed in the second transmission medium unit for converting the type of ultrasound received from the first transmission medium unit;
• an ultrasonic receiving unit disposed in a second region of the outer surface of the pipe, and including an ultrasonic receiver, a first reception medium unit disposed between the ultrasonic receiver and the second region, a second reception medium unit disposed between the first reception medium unit and the second region and contacting the second region, and a second ultrasound type conversion unit formed in the second reception medium unit for converting the type of an ultrasound received from the second region;
• and
• a signal measuring unit configured to measure an ultrasonic signal output from the ultrasonic receiver or a signal corresponding thereto,
• wherein the ultrasonic generator generates a first ultrasound of a transverse wave type,
• wherein the first ultrasound mode conversion unit is configured to convert the first ultrasound of the transverse wave type into a second ultrasound of a longitudinal wave type,
• wherein the second ultrasound of a longitudinal wave type propagates through the fluid inside the pipe and is received by the ultrasonic receiving unit,
• wherein the second ultrasound type conversion unit is configured to convert the second ultrasound of the longitudinal type into a third ultrasound of a transverse wave type,
• wherein the signal measuring unit is configured to analyze variations in intensity, attenuation, and signal characteristics of the third ultrasound of the transverse wave type converted by the second ultrasound type conversion unit, and to calculate a height of the foreign substance present inside the pipe based on the analyzed variations in the signal characteristics.