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Special coupling flaw detector for petroleum
Fluorescent magnetic particle inspection is an electromechanical integrated structure. It consists of a power supply control system, a feeding mechanism, a composite magnetization mechanism, a magnetic suspension spray recovery system, a rotation observation system, a fluorescent lamp system, a blanking demagnetization mechanism and the like. Wet magnetic particle inspection is specially used to detect various cracks and minor defects on the surface and near the surface of ring-shaped parts such as couplings.
The control circuit adopts PLC centralized control with manual control and automatic control functions. During manual control, the manual operation control of each functional action of the equipment can be carried out. During automatic control, the equipment automatically executes the PLC internal automatic program to realize the semi-automatic control of a series of actions such as feeding → clamping (threading) → spraying → magnetization (twice) → continuous feeding → lifting of the rotating mechanism → rotation (observation) → rotation at 90℃→ rotation (observation) → blanking demagnetization, and the program is automatically and circularly executed. If the program needs to be finished immediately during execution, press the reset button switch of the equipment, and the program will be finished immediately and automatically return to the initial position.
Magnetization current adopts SCR contactless stepless voltage regulation technology, AC magnetization is controlled with power-off phase, which is suitable for both continuous and remanence flaw detection. Composite magnetization displays omnidirectional crack defects at one time, and is safer and more convenient to use.