why the Steam Turbine(20MW)center line and gear box center line not in same ele

why the Steam Turbine(20MW)center line and gear box center line not in same elevation during coupling alignment ?

Question Posted / paulraj87

Answers were Sorted based on User's Feedback

why the Steam Turbine(20MW)center line and gear box center line not in same elevation during coupli..

Answer / dr.atul bansod

Elevation is given for compensation of natural sag of heavy rotors.Steam turbine manufacturer submits a document known as deflection curve for rotors. On that curve '0'point is specified (any bearing) and other bearings ar kept on different elevation with reference to this "0" refereed bearing.

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why the Steam Turbine(20MW)center line and gear box center line not in same elevation during coupli..

Answer / rayudu thota

While rotation high speed shaft of gear box will lift by low speed side shaft due to the load on high speed shaft
Then it will come in to centre line after rotation.

Is This Answer Correct ?

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3 No

why the Steam Turbine(20MW)center line and gear box center line not in same elevation during coupli..

Answer / amit singh

It will damage the shaft coupling and more even dangerous in running condition & JOP lifts the shaft not by weight u fool.

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