Development Of In-situ X-ray Nondestructive Testing System For Electric Tension Clamps

In recent years,accidents caused by the rupture of the hardware-electricity tension clamps in power transmission lines have severely affected the safe and stable operation of the power system.How to effectively detect the power tension clamps has become particularly important.In view of the fact,that the current traditional inspection methods can only perform side analysis from the data obtained from the test results,and cannot more intuitively judge the internal situation of the electric tension clamp,there are great limitations.Through the introduction of X-ray transmission imaging technology,it is a very effective technical means for the detection of electric tension clamps,which fundamentally solves the disadvantages of traditional detection technology.However,due to the bulky size of the current X-ray generating devices,it is not possible to perform high-altitude in-situ detection of the tension clamps used in the operational amplifier circuit.Therefore,a lightweight Xray generating device is designed in this paper and equipped with digital imaging technology to form a set of in-situ X-ray non-destructive testing system for electric tension clamps,which is convenient for inspectors to perform high-altitude in-situ detection and clear imaging in real time.It not only solves the disadvantages of the traditional detection method of electric tension clamps,but also solves the limitations of the current X-ray inspection.During the development of the system,we first select a suitable X-ray tube,adopt the lithium battery power supply method,use ZVS(Zero Voltage Switch)technology to drive the pulse generator to generate high voltage,and then balance the voltage doubler rectification circuit The high voltage is boosted multiple times.The volume of the power supply circuit is designed with a patch.The designed high voltage power supply is simpler,which greatly reduces the size and weight of the X-ray machine.Finally,it is assembled into a portable X-ray machine.Next,according to the current imaging method,we select the cesium iodide imaging panel with better imaging effect and higher cost performance as the receiver for X-ray imaging,but the tube voltage,tube current,exposure time,imaging distance,projection size,these The key parameters will affect the quality of the imaging.Through theoretical calculations and experimental comparisons,appropriate system detection parameters are selected.After completing the above work,we developed a set of image acquisition and processing software through Labview and Matlab to implement the functions of reading,enhancing,and saving the images collected by the hardware.Finally,field experiments prove the practicability of the "electrical tension clamp in-situ X-ray inspection system" developed in this paper.Field experiments show that the designed system is lightweight,and inspectors can carry the in-situ non-destructive testing of electric tension clamps at high altitude,with clear imaging results.The development of this system has provided a great guarantee for the safe operation of power transportation lines.