Measuring method and apparatus for corrosion position and remain thickness of metal pipe using pulse an eddy current

摘要

The present invention is a pulse voltage to the drive coil and the object to be inspected, the metal tube by the drive coil Preparation of the detected eddy current signal and amplifying the amplified digital signal processing by the eddy current in the metal of the digital voltage value of the processed target object is a metal tube with the same specification are pulse voltage detection coil for detecting the eddy current generated by the applied For the corrosion of the metal tube as compared to the specimen voltage value detected by the position and the metal tube with a pulsed eddy current measuring the residual thickness of the corroded location and thickness measuring method, and; And a pulse generating unit that includes the high-pressure power source, the pulse generator and the drive coil of the pulse voltage applied to the metal tube that is generated in the unit, and the detection coil for detecting a pulsed eddy current is induced in the metal tube, eddy current signal is induced in the detection coil a collection unit for receiving a signal, and signal processing unit for detecting a voltage value of a location in the eddy current signal acquisition signal is received in part, the signal amplification unit for amplifying a signal detected by the signal processing section, by the signal amplifying section corrosion location and thickness of the metal tube with the eddy current pulse comprising a computer object to be inspected by comparing the amplified signal to the metal tube and the voltage value detected by the test piece made of metal compared to the same standard for measuring the residual thickness of the metal pipe and the corrosion position providing a measuring device that can measure prevents the remaining thickness of the pipe due to corrosion, and corrosion of the metal tube as well as the location of metal pipes that are also operating in the high-pressure environment, it is possible to calculate the extent of the erosion area is damaged by corrosion and to prevent industrial accidents, to reduce costs will have losses due to accidents.