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What are the types of clearance and alignment measurements commonly taken during the disassemble and reassembly of a gas turbine unit?

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Question ajoutée par Mohamed Sharkawy , Technical Support Engineer , الشركة السعودية للكهرباء
Date de publication: 2013/08/23
Simon Shaibu
par Simon Shaibu , Manager/Teamleader Maintenance , Aes Nigeria branch Of Aes Arlington USA

Clearances and Alignment during opening of the gas turbines 1.
Initial Accessary turbine alignment 2.
Initial Turbine Load gear alignment 3.
Turbine opening clearance 4.
Bearing1 and2 clearances 5.
compressor clearances Clearances and Alignment during closing of turbine 1.
Turbine closing clearance 2.
Bearing1 and2 clearance 3.
compressor clearance 3.
Accessory and turbine alignment

waseem waseem
par waseem waseem , SENIOR MECHANICAL TECHNICIAN , Fatima Energy Limited (120 MW

1:Turbine first bucket to shroud clearance

2:Diagram seal (inter stage labyrinth seal)clearance between shaft to laby.

3:2nd stage bucket to shroud clearance.

4:liner to transition piece seal compression

5:Bearing1 and2 clearance

6:coupling float

7:check alinement

8:compressor blades clearance

9:nozzle centering2nd stage

10:barrel seal clearance

11:load gear box and accessory gear box bearing clearance and take bearing crush

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