steam turbine rotor
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Approval from the purchaser is required for built-up rotors (disks fitted onto the shaft) when the blade tip velocities exceed 250 m/s (825 ft/s) at maximum continuous speed, or when the steam temperature at the stage inlet exceeds 440℃ (825°F)
Approval from the purchaser is required for built-up rotors (disks that are shrunk onto the shaft) when the blade tip velocities exceed 250 m/s (825 ft/s) at maximum continuous speed, or when the steam temperature at the stage inlet exceeds 440℃ (825°F). What aspect would you like to discuss?
This post was last edited by raylikenoother on 2011-9-1 10:22. Approval from the purchaser is required for assembled rotors (disks mounted on the shaft) when the blade tip velocity exceeds 250 m/s (825 ft/s) at maximum continuous speed, or when the steam temperature at the stage inlet exceeds 440°C (825°F). The purchaser must provide proof that, under maximum continuous operation, the blade tip velocity of the fully assembled rotor is above 250 meters (825 feet)/second； Or, if the inlet vapor temperature at that stage exceeds 440 degrees Celsius (825 degrees Fahrenheit), what is broken? ;P :lol
Reply 4# raylikenoother Approval from the purchaser is required for assembled rotors (disks mounted on the shaft) when the blade tip velocity exceeds 250 m/s (825 ft/s) at maximum continuous speed, or when the steam temperature at the stage inlet exceeds 440℃ (825°F). The purchaser must provide proof that, under maximum continuous operation, the blade tip velocity of the fully assembled rotor is higher than 250 meters (825 feet)/second； Alternatively, the inlet vapor temperature at that stage exceeds 440 degrees Celsius (825 degrees Fahrenheit). This translation can be improved further to make it more accurate. For construction. . . . . . . The axis for the conditions must be approved by the purchaser. That blade tip is not the rotor tip either; it is rather the tip of the blade. Moreover, it involves a continuous rotational speed, not an instantaneous one (this is a requirement for the design that must be reflected in the translation) ； stage is translated as stage break. The specialty of steam turbines.
Sets of rotors with the disk hot-fitted to the shaft, in which the tip linear speed at maximum continuous speed is above 250 m/s (825 ft/s) or the steam temperature at the stage inlet exceeds 440 degrees Celsius (825 degrees Fahrenheit), must be approved by the buyer.