Centrifugal fans is to rely on the input mechanical energy, improve the delivery side by side gas pressure of gas machinery, it is a follower of fluid machinery. From the energy point of view, the gas transport machinery is the main mover of the mechanical energy into potential energy of a mechanical gas.
Centrifugal fan is the most common gas delivery machine. Can transmit air, oxygen, nitrogen, hydrogen, ethylene and ethylene and other gases Bing. ns = 48 Fan of the main air supply for the boiler can also be used in other industrial situations. ns = 48 Centrifugal Boiler Blower Fan is a common product in a common specification.
The design of centrifugal induced draft fan boiler technical indicators: flow rate qv = 15m ³ / s; total pressure p = 5.5KPa (N/m2); speed n = 1450r/min; fan efficiency η = 84%.
Through access to a lot of information on the boiler centrifugal induced draft fan to have a rough understanding about the background, and then to develop design. Centrifugal fan according to the work of the structural principle of its analysis to determine the product structure, and the need to design the components. According to the performance parameters have been a lot of calculations, mainly aerodynamic calculation of the impeller, shaft power calculation, the calculation of case size, shaft size calculation, obtained by calculating the impeller diameter, leaf number, leaf outlet angle, shaft diameter and a series of important data, from the axis of the outer diameter of the keys to use to determine the size and bearing size, the final size and strength according to the requirements of precision design, its various parts are given the choice of materials, so that its high efficiency and energy saving, low noise purposes.
