Pressure after the first control stage of the turbine
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Dear seniors, what is the normal pressure after the first control stage of a steam turbine? What does it indicate when it gets bigger or smaller?
Does the pressure after the primary control stage refer to the wheel pressure?
The regulating stage and the pressure after that should, during normal operation, be proportional to the inlet steam flow rate~~~ For more details, read this article~~~
The pressure at the regulating stage is a crucial pressure parameter for monitoring; it is proportional to the amount of air intake. If this regulating pressure is high under the same conditions of air intake, it may be due to scaling in the flow passages or missing blades that block those passages. The pressure at the regulating stage can provide an intuitive indication of whether there is scaling in the flow passages, allowing for comparison with previous data under identical conditions
This post was last edited by yunqishilz_JGLQ on 2020-12-19 at 18:48. This pressure has a specific name: wheel chamber pressure. If the pressure in the wheel chamber is too high, it indicates that the flow capacity is likely to decline, and scaling may occur within the unit. There is usually a high alarm threshold and a shutdown threshold; in severe cases, the unit may even shut down.