“There was a sudden defect in the pump of the oil depot. Chen went to prepare the tools, and Zhang went to notify the electrician to check the insulation of the broken wire. We are going to start dismantling and repairing the oil pump.” On October 17, the State Grid Gansu Liujiaxia Hydropower Plant Mechanical Branch carried out an emergency drill for power protection based on actual work.

After the drill started, the maintenance personnel of the auxiliary machine test team of the mechanical branch quickly arrived at the site, disconnected the coupling, removed the base screws, and prepared to conduct a comprehensive inspection of the motor. Unexpected problems occurred. The coupling of the oil pump was too tight, and the force puller could not be used. If it was hit with a hammer, the coupling might be damaged by external force.

“You must pull out the coupling firmly, Chen, I will measure the distance from the coupling to the motor housing, you can find a few matching bolts, let’s make a simple small threaded jack, and tighten the screws symmetrically. It came out.” Pan Feng, a technician of the auxiliary engine test class, explained to the staff carefully while working.

After the screw is supported, turn it gently, and the coupling is pulled out firmly. “Don’t look at a small bolt, it can fix equipment or be used as a jack. This finger-sized bolt can carry 2 tons, which is the weight of a car.” On-site training for flexible use.

In recent years, Liujiaxia Hydropower Plant has vigorously carried out the construction of core teams. The key link is to improve the maintenance skills of team workers and to be able to independently complete the A/B-level maintenance work of hydro-generator units and auxiliary equipment. The mechanical branch of the factory has innovated the traditional craftsmanship, and a large number of excellent small creations, small inventions, and small innovations have emerged, which has greatly improved the level of maintenance operations.

Hebei Chengyi Engineering Materials Co., Ltd. is committed to the production and R&D of bolt and screw fasteners. Its products are widely used in electric power, steel structure, construction, mining, photovoltaic, machinery, transportation, railway and other fields. With fine production technology and strict quality management system, it provides customers with detailed, considerate and reassuring one-stop service.