Method for quickly selecting boiler blowpipe parameter

A method for quickly selecting boiler blowpipe parameter relates to a method for selecting boiler blowpipe parameter, and specifically relates to a method for quickly selecting boiler blowpipe parameter. The method for quickly selecting boiler blowpipe parameter solves the problem that the blowpipe parameter is hard to be reasonably selected when blowing pipe by steam of a newly built thermal power generating unit boiler. The method comprises the following steps: determining a resistance coefficient of a blowpipe system; picking up a flow coefficient Alpha corresponding to the total resistance coefficient (A formula is provided) based on a flow ratio curve; selecting a blowpipe parameter for calculating a blowpipe steam flow; calculating a pressure drop for each section; figuring out inlet/outlet steam parameters of each section based on the calculation; judging whether the blowpipe coefficient meets the requirement that the blowpipe coefficient is greater than 1 based on the blowpipe coefficient obtained by the calculation. The method for quickly selecting boiler blowpipe parameter is applicable to the field of boilers.