GAS TURBINE ENGINE COMPRESSOR ROTOR ASSEMBLY WITH BALANCING SYSTEM Russian patent published in 2018 - IPC F04D29/32 G01M1/36 F01D5/06 F04D29/66 

FIELD: machine building.

SUBSTANCE: method of balancing a compressor rotor assembly, which includes: a forward weldment and an aft weldment; pre-balancing the aft weldment of the compressor rotor assembly with compressor disks prior to populating the compressor disks with circumferentially installed compressor rotor blades. Pre-balancing the aft weldment includes measuring a dynamic balancing parameters of the aft weldment. Pre-balancing the aft weldment includes determining a number of underplatform weights needed and a location for each underplatform weight within a circumferential slot of the compressor disk. Pre-balancing the aft weldment includes mounting each underplatform weight in the determined location. Balancing system described herein limits the number of units used therein by using the same underplatform weight in more than one axial position or step. Limiting the number of units in the balancing system reduces the complexity of the balancing system.

EFFECT: reducing complexity and eliminating the shortcomings of the balancing system reduces the balancing time and improves its accuracy.

8 cl, 9 dwg