Application Cases

A submerged arc furnace is a large-scale electrometallurgical device used for ore smelting. The electrode immersion depth (EID) in a submerged arc furnace is a critical parameter for controlling the smelting process and serves as an essential basis for regulating charge reactions. However, since the electrodes are deeply embedded in extremely high-temperature furnace materials, there is currently a lack of effective online monitoring methods. To address this detection challenge, engineers have researched and proposed an acoustic testing method using ultrasonic guided waves for EID detection.

The ATA-2000 series high-voltage amplifiers from Aigtek are widely used in the field of ultrasonic guided wave detection technology. They can provide the most suitable power amplifiers based on different voltage and power requirements, driving most ultrasonic probes available on the market.

Experiment Name: Ultrasonic Guided Wave Detection of Electrode Immersion Depth in Submerged Arc Furnaces

Experimental Principle: An ultrasonic transducer installed at the top of the electrode generates excitation signals in the graphite waveguide. As ultrasonic waves propagate along the graphite waveguide, partial ultrasonic signals are reflected back to the ultrasonic transducer due to interface reflections. The measurement system evaluates electrode parameters based on the reflected ultrasonic signals. By measuring the flight time between the transmitted signal and the echo signal, the position of the electrode's working end is calculated. When cracks appear in the electrode, partial ultrasonic signals are reflected back to the ultrasonic transducer ahead of time. Therefore, hidden cracks in the electrode can also be detected based on the ultrasonic signals reflected back to the transducer prematurely.

Experimental Block Diagram:

Experimental Setup Image:

Experimental Procedure: A signal generator outputs a sinusoidal signal with a predetermined frequency, which is then amplified by a power amplifier to drive the transmitting transducer. Simultaneously, an oscilloscope records and saves the signals received from the receiving transducer. The number of sampling points for the received signal is set to 512, with a sampling period of 0.4 µs. To reduce interference noise in the received signal, a low-pass filter circuit is used to filter the output of the receiving transducer.

Product Recommendations: ATA-2000 Series High-Voltage Amplifier, ATA-4000 Series High-Voltage Power Amplifier

Figure: ATA-2000 Series High-Voltage Amplifier Specifications

Figure: ATA-4000 Series High-Voltage Power Amplifier Specifications

Application Areas: Pipeline inspection, steel plate inspection, composite metal material inspection, bridge gap detection

Application Scenarios: Ultrasonic flaw detection, metal crack detection, pipeline distance measurement, pipeline exploration, submerged arc furnace inspection, etc.

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