Ultrasonic Testing Device Calibration

Product Introduction

The electrical parameter testing of equipment in power supply enterprises boasts a comprehensive system. However, mechanical damage cannot be reflected through electrical parameters. From the porcelain insulators supporting the conductors and insulation, transformer housings, and sleeves, to a series of metal accessories like the busbars and clamps specifically for power lines, their physical characteristics can only be detected through ultrasonic testing to identify cracks and pores that are invisible to the naked eye within the equipment. The introduction of new ultrasonic testing instruments for power applications, as well as the documents issued by the State Grid Corporation, undoubtedly provide unprecedented safety guarantees for the operation of these devices, such as high-voltage porcelain insulators, for which the State Grid Corporation has successively formulated...JB/Z 262-2000Transmission Production[2004]40No content provided.JB/T 9674-1999、《72.5kV"Technical Supervision Regulations for High-Voltage Support Insulators of Porcelain Insulation" (State Grid Technology)[2005]174"Industry Standards and Guidelines such as 'Technical Guidelines for Ultrasonic Inspection of Operating Power Transmission Pole Porcelain Insulators and Covers' are aimed at standardizing various technical requirements in the production and use of high-voltage pole porcelain insulators."

     In response to the limited functionality of conventional ultrasonic flaw detectors in the current market, which are unable to perform specialized inspections on electrical equipment, our company has developed a non-destructive testing device specifically designed for porcelain insulators, bushings, busbars, main equipment enclosures, electrical line fittings (such as wedge line clamps), pressure vessels in power plants, pipelines, and other components. Compared to conventional ultrasonic flaw detectors, this device offers greater professionalism and foresight.

Product Features

   Insulators are essential components in the operation of power plants and substation, serving as supports for conductors and providing insulation. Their working condition directly impacts the safety of power grid supply. Due to their lack of inherent deformation and extreme toughness,.Low, most porcelain insulators are subjected to mechanical loads during the operation of the power grid and the adverse effects of severe weather conditions such as wind, snow, and sun exposure, which cause additional stress to increase and concentrate, leading to rapid expansion of internal defects..Fracture of porcelain insulators can easily lead to severe accidents in the power grid.

Recent years have seen frequent reports of porcelain insulator fractures, particularly in cold regions with significant temperature variations. These incidents not only severely impact power supply safety and result in substantial economic losses, but also pose threats to the personal safety of operators and maintenance personnel. They have become a major隐患 for the safe operation of the power system. Therefore, it is imperative to inspect the internal physical condition of insulators. In response, the State Grid Corporation has issued technical guidelines.[2005]174The "No. XXX File" and "On-Site Inspection Procedure for High-Voltage Pole Porcelain Insulators," to enhance the technical supervision of high-voltage pole porcelain insulators and standardize the non-destructive ultrasonic testing methods for high-voltage pole porcelain insulators.

 Ultrasonic testing can overcome the shortcomings of the aforementioned methods, as it utilizes an incident angle equal to or nearly approaching the nth order..An incident longitudinal wave at the interface generates a wave transformation, resulting in a beam of nearly parallel creeping waves near the surface of the porcelain bottle. When these waves encounter cracks or other defects, they are reflected back. After signal conversion and transmission to the instrument, an independent defect echo will be displayed on the instrument's screen. Non-destructive testing of insulators can be easily carried out by observing the instrument. This method, in addition to overcoming the shortcomings of previous methods, boasts high sensitivity, strong penetration, rapid detection speed, and is harmless to both the tested items and personnel.

 The Digital Insulator Ultrasonic flaw detector is a compact, portable ultrasonic flaw detector suitable for material defect evaluation and location, wall thickness measurement, etc., particularly ideal for the inspection requirements of various insulator materials.