The exhaust temperature of the turbine is rising
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If the vacuum of the turbine remains unchanged but the exhaust temperature rises, what could be the reasons?
Possible causes: 1. Fouling on the turbine blades or excessive clearance between stages; 2. Blade fracture; 3. Poor quality of steam, with temperature and pressure levels below the set values; 4. Excessively high system load; 5. Low turbine speed; 6. Problems with the instruments
The temperature changes with the outside conditions: it’s 46 degrees at night, and can rise to 56 degrees at noon, showing significant fluctuations
1. Instrument issue, 2. Circulating cooling water flow rate
In situations where there are large fluctuations in day and night temperatures, if no other adjustments are made, it is advisable to pay attention to the temperature of the circulating water system; weather changes have a significant impact on water temperature
Generally, exhaust temperature and exhaust pressure are related to each other: a certain exhaust temperature corresponds to a certain exhaust pressure, and the exhaust pressure minus atmospheric pressure gives the degree of vacuum. These three should be consistent. Have you checked the end difference? How much is the difference? Or the temperature sensor is broken.