The turbine drives the compressor!
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The turbine drives the compressor; the turbine used in Hangzhou Steam Power adopts a back-pressure plus condensing type, and during the initial startup, it stopped due to shaft vibration of the back-pressure machine. Later, the synthesis pressure was reduced to 3 kilograms; it was restarted half an hour after shutdown, but it failed to start due to a chain shutdown caused by shaft displacement in the backpressure machine. We are going to get in touch with the manufacturer to take a look. But I don’t think there should be any problem; it’s likely that during the process from shutdown to restart, the cooling rates at different points on the turbine shaft and impeller vary, which leads to an increase in shaft displacement when the machine is restarted. However, the axis displacement still triggers a high-level alarm during the barring process. Let’s analyze what’s going on here
I feel that an increase in shaft displacement is related to uneven gaps in the oil film. Personal opinion, for reference only: victory:
Isn’t there a manufacturer to conduct tests?
The original poster mentioned that \"the turbine drives the compressor, and the turbines used in Hangzhou Steam Power plants are of the back-pressure with condensation type\" – a back-pressure turbine refers to a turbine in which the steam after working is not condensed but instead enters the secondary piping system directly； Condensing type refers to the situation where steam becomes condensate after doing work. How can two different types of turbines be combined? So, what you might be referring to is a extraction-condensing steam turbine. This post was last edited by yzhaown99 on 2009-4-20 10:32.]
You’re right; it’s a extraction-condensing steam turbine. I opened it up today and found that the bearing bush had burned out.
The cause of burned bearing shells may be an oil issue.
It’s a bit better with just ceramic tiles; it’s necessary to check carefully whether the shaft has any impact
During testing, the manufacturer is usually present. If the tiles burn out, it indicates a problem with your oil system; please check it
The bearing shells burned out during testing; it’s not necessarily a problem with the oil quality – it could be an installation issue.
The key to testing is clear organization, as well as a detailed testing plan provided by the manufacturer. The handover to the installation unit also needs to be done properly.