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US 6,615,905 B2Granted
Method of making an air preheater rotor
AssigneeAlstom (Switzerland) Ltd
InventorsRobin B. Rhodes, Jon R. Cowburn, Kurt M. Fierle
Life of this patent
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AssigneeAlstom (Switzerland) Ltd
InventorsRobin B. Rhodes, Jon R. Cowburn, Kurt M. Fierle
Estimating the term…
A method for constructing a rotor of an air preheater having a plurality of diaphragm plates dividing the rotor into a number of wedge-shaped compartments. Each compartment includes compartment components such as a rotor shell plate, a hot end rotor angle, a cold end rotor angle, and one or more stay plates and means for locating at least a portion of each of the components within the compartment. The diaphragm plates are manufactured by marking at least one index location associated with each compartment component on each diaphragm plate blank utilizing a template identifying the index locations and forming an opening at each index location. Each compartment is assembled by positioning a first diaphragm plate adjacent to a second diaphragm plate and locating each compartment component between the adjacent diaphragm plates by engaging the locating means of the component in an associated opening in one of the diaphragm plates. The locating means may comprise at least one tab extending from each of the sides of the compartment components. The tabs are inserted into the associated opening in one of the diaphragm plates to locate the component.
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 diaphragm plate for the rotor of an air preheater, the rotor comprising a plurality of wedge-shaped compartments, each of the compartments 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, each of the compartment components having locating means for locating the compartment component in the compartment, the diaphragm plate comprising oppositely disposed hot and cold ends, oppositely disposed inboard and outboard ends, an outboard end portion, and at least one intermediate portion disposed intermediate the inboard and outboard ends, the outboard end portion defining first, second, third, and fourth axially spaced openings adapted for receiving the locating means of the rotor shell plate, each diaphragm plate defining a fifth opening extending from the outboard end for receiving the locating means of the hot end rotor angle and the hot end and a sixth opening extending from the outboard end and the cold end for receiving the locating means of the cold end rotor angle, each intermediate portion defining seventh, eighth, ninth, tenth, and eleventh axially spaced openings for receiving the locating means of one of the stay plates.
Dependencies are inferred from the claim text.