Pipeline inner wall ultrasonic cleaning system capable of automatically tracking frequency

Abstract

The invention discloses a pipeline inner wall ultrasonic cleaning system capable of automatically tracking frequency. The pipeline inner wall ultrasonic cleaning system comprises a rectifying and filtering circuit, a high-frequency inverter circuit, an impedance matching circuit and a transducer which are connected in sequence. The high-frequency inverter circuit and the impedance matching circuit are connected with the control module, the control module controls the high-frequency inverter circuit and the impedance matching circuit, the transducer is connected with the feedback circuit, direct-current voltage with the voltage amplitude meeting the requirement flows to the inverter circuit, and the inverted voltage is converted into an intermediate-frequency high-power ultrasonic signal. The impedance matching circuit adjusts load power, a high-power ultrasonic signal drives the ultrasonic transducer, the frequency tracking module detects the vibration frequency of sediment in the pipeline and inputs the vibration frequency to the control module to form a closed loop, the resonance frequency of the sediment in the pipeline is detected, the frequency of the ultrasonic signal is automatically adjusted, and the maximum output power is output through the transducer. Sediment attached in the pipeline is removed through frequency resonance, and sediment deposited on the inner wall of the pipeline is cleaned up on the basis that the water supply pipeline is not damaged.

Description

technical field [0001] The invention relates to the field of ultrasonic cleaning, in particular to an ultrasonic cleaning system for the inner wall of a pipeline that can automatically track the frequency. Background technique [0002] Ultrasound is a sound wave with a frequency higher than 20kHz, which is widely used in ultrasonic cleaning and ultrasonic therapy. The ultrasonic decontamination device uses the principle of different resonance frequencies between metal and sediment and the cavitation effect of ultrasonic waves to vibrate the sediment deposited on the inner wall of the pipeline, and finally wash away the sediment through the water flow in the pipeline. In hydropower plants, since the cooling water is taken from the production water (settling tank or tail water), the sedimentation of the cooling water pipeline is relatively heavy, and a large amount of sediment adheres to the inner wall of the pipeline, resulting in pipeline siltation. The method currently ado...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the silt attached to the inner wall of the pipeline cannot be effectively removed by the recoil method, and most of the dirt is still attached to the inner wall of the pipeline. The purpose is to provide an ultrasonic cleaning system for the inner wall of the pipeline that can automatically track the frequency. The high-frequency inverter circuit and impedance matching circuit maximize the output power of the transducer. At the same time, it can detect the vibration frequency of the sediment in the pipeline and adjust the frequency of the ultrasonic signal. By increasing the output power and frequency resonance of the transducer, the sediment attached to the pipeline can be eliminated. to clear

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