High turbine vacuum
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The vacuum level of the turbine has increased; the temperature of the entire condensate system is 40 degrees higher than normal, and the gas consumption is 10 tons higher than usual. Could someone please help identify what the problem is
When the vacuum is too high, the pressure of the condensing equipment falls below the design value, which increases the amount of air that leaks in and raises the load on the exhaust pump.
Isn’t an excessively high vacuum caused by the pump?
What was said on the first floor is correct; it seems there’s a leak somewhere in the sealing system.
When the vacuum level is high, the steam consumption increases, as the enthalpy drop of the working steam becomes smaller; to produce the same power, it is necessary to increase the amount of steam used. There are many reasons for a high vacuum level; a leak in the condensation system is the most likely cause, and problems with the pump that result in reduced pumping capacity can also be a factor.
Is your question phrased backwards? A high vacuum level is beneficial for the performance of condensing steam turbines
It is necessary to identify the cause of the increased vacuum. Personally, I think there are the following possibilities: 1. The nozzle of the pump is damaged； 2. Decline in steam quality ； 3. The system has leaks ； 4. Blockage of the surface cooler affects heat exchange ； 5. An increase in the temperature of the circulating water affects heat exchange