How to detect the lining thickness of a visokotemperaturna električna peć?

1. Metoda kapacitivnosti

Metoda kapacitivnosti je slična metodi otpora. Koaksijalni kružni kondenzatorski senzor je ugrađen unutar obloge peći, a vrednost kapacitivnosti odgovara njegovoj dužini. Debljina zida visoke peći može se odrediti merenjem vrednosti kapacitivnosti.

2. Stress wave method

The stress wave signal is very sensitive to structural defects. When the stress wave propagates in the medium, such as holes, cracks and other interface discontinuities, reflection, refraction, scattering and mode conversion will occur. The thickness of the stave material can be determined.

3. Metoda otpora

The resistance element is embedded inside the furnace lining, the front of the sensor is aligned with the inner surface of the furnace lining, and it is connected to the measurement system through a lead wire. The resistance value of the resistance element is related to its length. As the resistance element and the furnace lining lose synchronously, the resistance will change. Use the corresponding measurement The meter measures the electrical signal output by the component, and then the remaining thickness of the furnace lining can be measured online.

4. Metoda detekcije toplotnog toka

Prema termodinamici, temperaturna razlika, toplotna provodljivost i debljina zida peći određuju intenzitet toplotnog toka. Za obloge visoke peći, toplotna provodljivost je fiksna, a debljina zida peći se može dobiti iz temperaturne razlike i intenziteta toplotnog toka.

The heat flow detection sensor is installed in the lower temperature part of the furnace lining. The heat flow intensity is calculated by the water temperature difference of the cooling wall of the hearth, and the temperature value measured by the thermocouple in the brick lining is combined to calculate the thickness of the furnace wall.

5. Ultrazvučna metoda

The thickness measurement is carried out at the point where the ultrasound propagates in the solid medium. At a constant temperature, the ultrasound is incident on the furnace lining and enters the furnace. The propagation time of the incident and reflection of the ultrasound in the furnace lining is used to obtain the residual thickness of the furnace lining.

6. Metoda termoelementa sa više glava

Several thermocouples of different lengths are installed in a protective sleeve, and then they are installed in the brick lining that needs to be inspected, and the erosion of the masonry can be inferred by measuring the temperature change of each thermocouple. When the temperature of each point and the temperature gradient between each point are basically stable, when the brick lining is gradually eroded to a certain part, the galvanic couple in that part will be destroyed, and the temperature signal will be abnormal.

7. Metoda zaključivanja modela

Koristi termoelemente kao elemente za detekciju, primenjuje termodinamiku i druge teorije da bi uspostavio matematički model lokacije temperature ložišta i dna peći, i izračunava približne pozicije linije očvršćavanja rastopljenog gvožđa i linije erozije ugljenične cigle kroz softversko programiranje i numeričku analizu.