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 driving coil Preparation of the detected signal and the eddy-current amplifying the amplified digital signal processing by the eddy current in the metal of the digital processing of the voltage value of the object to be inspected with the same standard metal pipe is a pulse voltage detection coil for detecting the eddy current generated by the applied The corrosion of the metal tube against the test specimen as compared to a voltage value detected by the position and the metal tube with a pulsed eddy current measuring the residual thickness of the corrosion and the thickness measuring method and position; And a pulse generating unit that includes the high-pressure power source, the pulse generator and the pulse voltage applied to the drive coil of 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 induced in the detection coil and a signal receiving unit for receiving, a signal processing unit for detecting a voltage value of a specific position in the eddy current signal received at the signal receiving unit, the signal amplification unit for amplifying a signal detected by the signal processor, the signal amplified by the amplifier section signal to the object to be inspected with the same specifications for the metal pipe metal pipe compared to the location of corrosion by using a voltage value of a pulse eddy current comprising a computer for measuring the residual thickness of the metal pipe and the corrosion position detected by the specimen compared to that made of a metal and a thickness measurement device to provide to prevent the metal pipe that is being operated at a high pressure environment because the extent of corrosion as well as parts and that can measure the remaining thickness of the pipe due to corrosion, and corrosion of the metal pipe position can be calculated also from being broken due to corrosion industry disaster prevention, and one that will reduce the costs associated with the accident.