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MID-FRAME SECTION OF A GAS TURBINE ENGINE AND CORRESPONDING METHOD OF ADJUSTING RADIAL ROTOR CLEARANCE
MID-FRAME SECTION OF A GAS TURBINE ENGINE AND CORRESPONDING METHOD OF ADJUSTING RADIAL ROTOR CLEARANCE
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机译:燃气轮机中部截面和调整径向转子间隙的相应方法
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摘要
A mid-frame section of a gas turbine engine having a radial clearance adjustability and a method for adjusting a radial clearance to a rotor in a mid-frame section of a gas turbine engine are presented. The mid-frame section includes a radial clearance adjusting assembly arranged at a compressor exit diffusor. The radial clearance adjusting assembly is configured to adjust the radial clearance to the rotor such that the rotor is concentric with respect to components of the mid- frame section, such as the compressor exit diffusor and shaft cover. The radial clearance adjusting assembly provides radial clearance adjustability in the mid-frame section at multiple locations, such as at forward end and aft end of the compressor exit diffusor. The radial clearance adjusting assembly improves efficiency of the gas turbine and reduces service and operating cost of the gas turbine engine. A method of adjusting radial clearance to a rotor in a mid-frame section of a gas turbine engine is also provided.
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