Yao Hui

TL;DR: In this paper, a method for welding line ultrasound array full focusing imaging based on oblique incidence longitudinal waves is presented, where a wedge block is added to a phased array probe, and a main acoustic beam of longitudinal waves enters a welding line of the to-be-tested piece through the wedge block.

TL;DR: In this paper, a high-voltage isolator contact finger on an online salt spray test device is disclosed, which comprehensively considers the influence of the separation and combination actions and salt spray environment on the contact performance of the contact finger, so the gas salt spray leakage in the chamber body is effectively prevented.

TL;DR: In this paper, a service life assessment method for an ultra-high voltage grid GIS housing containing defects is proposed, which comprises structural data acquisition, defect feature acquisition and defect expanding limit determination, material and welded seam performance acquisition, and fatigue crack extended model establishment.

TL;DR: In this article, a dynamometry connecting rod for on-spot installation and measuring of outdoor high-voltage isolation switch is presented, which can be used for various types of isolator's installation.

TL;DR: In this paper, an ultra-high voltage SF6 breaker shell ultrasonic detection device and detection method of detection method thereof is presented, which consists of a crystal twin focusing transverse wave sensor and a special contrast test block for ultrasonic test, the crystal twin focus transversal wave sensor comprises a shielding shell, and a left wedge block and a right wedge block are arranged in the shielding shell in parallel.