Are gas turbine fan blades broken?

Failure report for gas turbine fan blades, 1997]. Metallurgical and structural analyses on the failed blades have not shown any microstructure degradation. Studies on the ruptured surfaces using scanning electron microscope (SEM) have shown that fracture has been happened as a results of high cycle fatigue (hcf).

Can a cooling fan blade be fractured?

Since fracture in cooling fan blades has been occurred five times in our case study, in this research, the emphasis has been placed on failure analysis and preventing methods from the fracture in this generator’s fan blades.

When do gas turbine blades fail?

All of these failures have been happened after the first operation of gas turbine or at the early after operation 100 h after gas turbine repairs [Alsthom Company. Failure report for gas turbine fan blades, 1997]. Metallurgical and structural analyses on the failed blades have not shown any microstructure degradation.

How to cool a generator?

Since the optimum operation of a generator is highly affected by increasing in temperature, a cooling system is used to control the temperature. Employing a fan as a cooling system for the generator at the end sides of its rotor is a practical method [Montazer Ghaem Gas Turbine Power Plant.

What are the benefits of a belt-driven generator fan?

Provide improvement in generator enclosure pressure, lessening generator oil-leak potential, and differential pressure-alarm activation. The existing belt-driven fans have been redesigned to eliminate the drive belts by moving the fan motor inside of the fan assembly, directly connected to the fan blade shaft.

Does GE vernova offer a direct drive ventilation fan upgrade?

Contact us for a quote on a direct drive ventilation fans upgrade. GE Vernova's direct drive ventilation fans drop-in upgrades are designed to replace your current fans with limited disruption and can eliminate over-tensioning, overloaded bearings, and fan failure.