Fans of the four most prone to problems and solutions fan is a prime mover of the mechanical energy is converted to gas transportation and gas energy given to the mechanical , thermal power plants it is essential for machinery and equipment , one of the main blower, induced fan , a fan , sealing fan and exhaust fan , etc. and , in general, the fan consumes power plant generating capacity of about 1.5 % ~ 3.0% . In thermal power plants of the actual operation, the fans, especially the fan because operating conditions than the poor , the failure rate is very high , according to the statistics , Fan average annual failure is 2 times blower average annual failure was 0.4 times , thus cause unplanned outages or reduced unit load operation . Thus, the fan running quickly determine the cause of failure to take effective measures to solve is the power plant
Fans of the four most prone to problems and solutions :
Fan is a prime mover of the mechanical energy is converted to gas transportation and gas energy given to the mechanical , thermal power plants it is essential for machinery and equipment , one of the main blower , induced draft fan , a fan , exhaust fan and sealing machine classification , in general, the fan power consumption amount of about 1.5% of its generation to 3.0 %
In thermal power plants of the actual operation, the fans, especially the fan because operating conditions than the poor , the failure rate is very high , according to the statistics , Fan average annual failure is 2 times blower average annual failure was 0.4 times , thus cause unplanned outages or reduced unit load operation . Thus, the fan running quickly determine the cause of failure to take effective measures to solve is to guarantee the safe operation of power plants continuously .
Although many types of fan failure , the reason is very complex, but the actual operation of power plants according to the survey , we summarize the main points of the fan failure are four:
1 , the fan bearing vibration exceeded ;
2 , the bearing temperature is high ;
3, the rotor blades jam ;
4 , the protection device malfunction .
Excessive vibration blower fan bearings bearing vibration is the most common faults in operation , the fan bearings and blade vibration can cause damage , loose bolts , chassis air duct damage , such as failure , serious threat to the safe operation of the fan . Fan Bearing Vibration exceeded many reasons , such as to analyze the reasons for the different phenomena take appropriate approach can often play a multiplier effect.
1.1 Non- stop working area leaves the furnace ash handling fan vibration caused by such defects common in the boiler fan , fan phenomenon mainly as a sudden rise in vibration during operation . This is because when the gas into the impeller , with the rotating blades face there is a certain angle , according to the principles of fluid mechanics , the gas non-face of the blade must have a vortex generating , and then the ash particles in the gas vortex action will slowly deposited on the non-working surface.