1 Introduction In the case of grid disturbance or impact load, the turbine generator set will be excited by the unbalanced torque to excite the shaft torsional vibration. If the torsional vibration amplitude exceeds the allowable value, it will cause fatigue damage of the shafting, even C.......
In the past, the first impression given by Japanese cars was often a bad label with low safety, a relatively brittle and light body, and with the i.......
In simple terms, the frequency converter is mainly used for controlling the speed, and the energy saving effect that the frequency converter brings to the mechanical system of the construction machinery should be secondary in comparison with it, but this al.......
Eaton and the media have organized the "Energy Innovation and Sustainable Development Cities Forum" in Beijing, focusing on issues such as the energy challenge in the process of China's new urbanization and the sustainable development of cities, as well.......
(2) Make maintenance plans based on inspections;
(3) Prepare spare parts for mai.......
Valves are indispensable fluid control equipment for various departments of the national economy such as petroleum, chemica.......
“The energy-saving and environmental protection of elect
Among export commodities, from January to November, China's exports of mechanical and electrical pro