The survey can be adopted to the rotor unfixed type, and with 1∶(8～10) ratio of rotor's outlet width and impeller's diameter, meanwhile the simple vibration measurer brings a higher balanced precision with less time or cost, so the dynamic balance in site for large draft fan with fast rotational speed and high power can be done based on the mentionedabove method.
Combining with reality,the repair process of large fan is introduced,the drawing up of repair technology and implement method is introduced in detail,technical parameters and quality control importants of main working produre are put forward.
The ditinguishing and treatment methods of a few common faults have been summed up by the author through practical experience for many years and examples verification,the particular operation steps are put forword at the work of vibration state monitoring and simply diagnosis of large blower.
A large blower at the exhaust end of the ABT provides uniform wind speeds up to 5 mph.
This paper describes the estimation of noise spectrum offan,noise and vibration control of wind tunnel for the ventilation inopen pit mine.
In this paper, it is introduced that vibration velocity of the fans which used in cement plants cannot accurately show the running-condition of them by measuring and analysing. The evaluation standards of vibration for these fans are detemined by measuring their vibration acceleration and analysing it using of the mathematical statistics.
Dynamic balancing technique is a key technique in all high-speed machines. Existing methods of on-line dynamic balancing are analyzed in the paper. An on-line dynamic balancing method of large-size blast fan is present on the basis of fuzzy control.