Steam Turbine Rotor Blades

Steam turbine rotor blades are usually exposed to high temperature and high pressure steam flow. As steam enters the turbine, its temperature and pressure rise significantly, posing severe challenges to blade materials and structures.

When the turbine rotor blades rotate at high speed, they need to withstand the impact and vibration of high-speed fluid. In addition, they need to endure corrosion and wear from steam.

The steam may contain a certain amount of acidic substances, which will cause corrosion on the surface of the steam turbine rotor blades. In addition, high temperature environments may also aggravate the corrosion of blade materials.

Due to the high pressure and high speed flow of steam, turbine rotor blades need to withstand huge forces from hydrodynamic pressure. This places strict requirements on the strength and stiffness of the blades.

In industrial applications such as power plants, steam turbine rotor blades often need to operate continuously for long periods of time, so the blade materials must have good durability and fatigue resistance.

In some cases, steam turbine rotor blades can be internally cooled to prevent overheating and maintain their structural integrity. Cooling channels or channels within the blades allow cooling fluid (usually steam or water) to circulate to dissipate heat and reduce thermal stress.