Grinding dust removal machine change operating point method

Grinding dust collector machine change operating point method for grinding dust collector machine fan performance curve of different operating point on the test data ( To change if the fan is equipped with the performance of the organization, such as adjustable blade pitch blade, tip or leaf-tailed can extend, or changing the guide vane, the fan with multiple characteristic curve) , you should use appropriate installed in one or more devices in the system to change the performance of the fan. Used to adjust the performance of the device or the position of the valve must be able to keep the test period of satisfactory gas flow pattern, to ensure the satisfactory testing data. machine testing surface polishing cleaning machine according to the arrangement of the test and the method to install the fan may not be realistic, traffic detection surface must be in suitable straight section ( Had better choose on the entry side of the fan) , here is basically the axial flow conditions, symmetry, no eddy current. Displacement must be conducted to determine whether these conditions to meet. The fan into the duct with flow detection of surface or air leakage from air duct generally ignored. Bend in the wind and resistance to object to a larger distance downstream flow caused by disturbance, and in some occasions may can not find enough axial and symmetrical airflow test location, in this case, may be in the air duct installation guide vane or plate fixed airway shape, in order to obtain satisfactory airflow test scene. Airflow rectifying device, however, produced by the eddy current of the pitot static pressure readings causes error, so, if necessary, to detect surface had better not be less than 1 times the pipe diameter and even greater range of pipe length, in order to obtain a reasonable good air condition.

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