Hydro-generator top cover bolt elongation detection device

• Main Authors: PAN GANG, ZHU LIANG, XU YUTING, WU MING, XIA YONGQIANG, ZHANG LONGGE, YUAN YUAN, PAN YING, JANG, JI-HO, YANG MINZHI, ZHOU YILING, JIANG JIAJIE
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses a hydro-generator top cover bolt elongation detection device, and relates to the technical field of hydro-power engineering. Comprising a mounting plate, a differential capacitance sensor arranged above the mounting plate, and a triggering assembly penetrating through the mounting plate to trigger a movable polar plate of the differential capacitance sensor; the mounting plate is fixed on a locking nut of the top cover bolt, the lower end of the trigger assembly is in contact with the upper end of the top cover bolt, and the upper end of the trigger assembly is fixedly connected with the movable polar plate; the trigger assembly is of a telescopic structure. The beneficial effects of the utility model are that on-line detection is carried out on the elongation of the bolt of the top cover of the hydro-generator through the differential capacitive sensor; through differential capacitance detection, the influence of temperature and humidity changes on the detection stability and accu