Several questions about the overturning of steam turbines
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1. Does the external insulation of the steam turbine need to be completed before rotation? 2. How to detect the thermal expansion of the casing? How to control the thermal expansion that is not clearly required by the manufacturer?
1. The heat preservation needs to be completed, otherwise the heat dissipation will not only cause energy loss, but also affect the quality of the steam, which will be detrimental to the turbine rotor! 2. Thermal expansion can be detected with a dial indicator (or dial indicator) at the location to be detected.
We usually keep it warm after completing the monomer test run.； Generally, there are clear requirements for the axial, lateral and vertical displacement of the steam inlet, exhaust and coupling.
Are there any clear requirements in the relevant specifications?