What are the reasons why the vacuum level of a turbine cannot be increased?
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Our factory’s turbine vacuum level has not been able to increase recently, and increasing the amount of steam supplied also doesn’t help. I’m asking everyone for suggestions on what could be the causes
1. High steam temperature. 2. High steam consumption (severe overload). 3. Insufficient cooling capacity of the surface condenser; problems with the air coolers, or scaling, blockages in the coolers, and insufficient circulating water volume. 4. The water seal of the atmospheric safety valve is not in place. 5. Leaks in the vacuum system. 6. Insufficient performance of the pump; inadequate cooling of the pump’s cooler, resulting in high pressure, poor exhaust from the secondary pump, or internal leakage in the valve of the primary pump. 7. Is the level of the hot well fluid fine? A too high level of hot well fluid can also lead to low vacuum. If the value remains high after resolving all the above issues, please check the gauge.
It’s likely that all potential sources of leakage have been checked; wear and tear of the vacuum pump is the most probable cause~~·
Thank you, I’ll check those aspects you mentioned first
It’s possible; at the beginning of last year, the parking area was too cold, so there might be areas that have cracked due to freezing, but we weren’t aware of it
Check whether the surface cooler is leaking, whether the water pressure for cooling the surface cooler is sufficient, and also check whether the nozzles of the vacuum pump are in good condition (not damaged or clogged)
The steam quality should also be checked