Patent ID: 6615905
Filing Date: 2003-09-09
Classification: F28D,Y10T

Abstract:
A method for constructing a rotor of an air preheater, the rotor including a plurality of diaphragm plates dividing the rotor into a predetermined number of wedge-shaped compartments, each of the compartments being defined by adjacent diaphragm plates and including at least one compartment component selected from the group consisting of a rotor shell plate, a hot end rotor angle, a cold end rotor angle, and one or more stay plates, the method comprising the steps of:(a) manufacturing a plurality of diaphragm plates by (i) marking at least one index location associated with each compartment component on a plurality of diaphragm plate blanks utilizing template means for identifying the index locations, and (ii) forming an opening at each index location marked on each diaphragm plate blank; (b) assembling a compartment by (i) positioning a first diaphragm plate adjacent to a second diaphragm plate, the first and second diaphragm plates defining an acute angle, and (ii) locating each compartment component between the adjacent diaphragm plates with locating means for locating at least a portion of each compartment component, the locating means for each compartment component being engageable with an associated opening in one of the diaphragm plates; (c) repeating step (b) to produce the predetermined number of compartments defining the rotor; and (d) fixedly mounting the compartment components to the diaphragm plates.