Ultrasonic Testing Instrument Calibration Device

Product Introduction

A comprehensive system is in place for electrical parameter testing of equipment in power supply enterprises. However, mechanical damage cannot be reflected through electrical parameters. From porcelain insulators supporting conductors and insulation, transformer enclosures, and sleeves to a series of metal accessories such as busbars and clamps specifically for power lines, their physical characteristics can only be detected through ultrasonic testing to identify cracks and sand holes that are invisible to the naked eye within the equipment. The introduction of new ultrasonic testing instruments for power use, as well as documents issued by the State Grid Corporation, undoubtedly provide unprecedented safety guarantees for the operation of these equipment, such as high-voltage porcelain insulators, for which the State Grid Corporation has successively formulated...JB/Z 262-2000Transmission production[2004]40Numbered DocumentJB/T 9674-1999、《72.5kV"Regulations for Technical Supervision of High-Voltage Pole Insulators (Porcelain Insulators) above" (State Grid Corporation of China)[2005]174"Standard No. XXXX, 'Guidelines for Ultrasonic Inspection Technology of Operational Power Transmission Tower Porcelain Insulators and Porcelain Sleeves,' and other industry standards and guidelines are aimed at regulating the technical requirements for the production and use of high-voltage tower porcelain insulators."

     Due to the limited functionality of standard ultrasonic flaw detectors in the current market, they are unable to perform specialized inspections on electrical equipment. Based on our years of experience in ultrasonic flaw detection, our company has developed a non-destructive testing device specifically designed for porcelain insulators, sleeves, busbars, main equipment cabinets, electrical line hardware (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 critical components in the operation of power plants and substation, serving to support conductors and provide 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 effects of harsh weather conditions such as wind, snow, and sun exposure for a long time, which increases and concentrates their additional stress, leading to rapid expansion of internal defects..Fragility in porcelain insulators can easily lead to brittle fractures, resulting in severe power grid accidents.

In recent years, reports of porcelain insulator fractures have frequently emerged in various regions, particularly in areas with cold climates and significant temperature differences. These incidents not only severely impact power supply safety and result in substantial economic losses but also pose threats to the personal safety of operational and maintenance personnel. They have become a major隐患 in the safe operation of the power system. Therefore, it is imperative to inspect the internal physical condition of insulators. In this regard, the State Grid Corporation has issued a technical notice.[2005]174The "No. XXX File" and the "On-site Inspection Code for High-voltage Pole Porcelain Insulators," to strengthen the technical supervision of high-voltage pole porcelain insulators and standardize the ultrasonic non-destructive testing methods for high-voltage pole porcelain insulators.

 Ultrasonic testing can overcome the shortcomings of the aforementioned detection methods, as it utilizes an incident angle equal to or nearly approaching the.A longitudinal wave at a critical angle generates a wave transformation at the interface, resulting in a beam of nearly parallel creeping waves near the surface of the porcelain bottle. When encountering cracks or other defects, the creeping waves are reflected back, converted into signals, and transmitted to the instrument, where an independent defect echo is displayed on the instrument's screen. Non-destructive testing of insulators can be easily performed by observing the instrument. This method not only overcomes the shortcomings of the aforementioned methods but also boasts high sensitivity, strong penetration, rapid testing speed, and is harmless to both the tested items and personnel.

 The Digital Insulator Ultrasonic Flaw Detector is a miniaturized portable ultrasonic flaw detector, suitable for material defect assessment and location, wall thickness measurement, and is particularly well-suited for the flaw detection requirements of various insulator materials.