Directed at the problem that the testing data of fan noise becomes distortion viable during throttle governing, the flowing state property s numerical simulation is done in throttle governing pipe field about computational fluid dynamical by finite elements software ANSYS, and analyses the structure parameters influence to fan noise tesing.

The integration harness of fan-noise of mine;

The paper discussed the main reasons of producing noise for boiler fan, put forward measures to control noise of boiler fan at the different conditions and problems needing to be paid attention to.