What are the effects of high turbine exhaust temperature?
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What are the effects of high turbine exhaust temperature?
The exhaust temperature is high; it must be because the steam isn’t doing enough work, which results in waste. I’m not sure if what I’m saying is correct; let’s learn from each other
High exhaust temperature can lead to deteriorated operating conditions for the blades, increasing the risk of equipment damage
The last edit to this post was made by Qin Shang on 2016-4-24 at 12:43. The common reasons for high exhaust temperature are: 1. Faults in the circulating water system, 2. Leaks in the vacuum system, 3. Air leakage from the shaft seals, 4. Faults in the condensate water system. It is necessary to investigate each of these causes and eliminate them one by one； First, it may cause leaks at the flanges of the condenser copper tubes, allowing circulating water to leak into the condensate and thus deteriorating the water quality. Second, it will affect the center of the shafting in the steam turbine generator set, leading to increased vibration in the unit. Third, it will reduce the economic efficiency of the unit.
The steam does not perform sufficient work; this may be due to a reduced heat transfer capacity in the waste heat utilization system, or it could be because the inlet temperature is too high
The final stage blades should also not be allowed to have too high operating temperatures
High exhaust cylinder temperature is harmful to the second-to-last and last stage blades, while high steam moisture content can easily damage the last two stages of blades! Be careful; check the exhaust pressure and increase the vacuum level