As the main condensing equipment of the condensing steam turbine unit, the steam turbine condensate system is responsible for establishing and maintaining a high vacuum at the level from the exhaust port of the steam turbine, condensing the exhaust steam of the steam turbine into water, and pumping the condensate water to the deaerator to form feed water for the boiler; The condenser vacuum quality will directly affect the normal operation of the unit. It can be said that the quality of condenser operation will directly affect safety and economy. and the efficiency of operation of the steam turbine unit.
As the exhaust steam discharged from the steam turbine is cooled and condensed into water, its specific volume decreases sharply. For example, when the absolute pressure of steam is 4 Kpa, the volume of steam is more than 30,000 times the volume of water.When the exhaust vapor condenses into water, the volume is greatly reduced, causing a high vacuum to form in the condenser. .
Detailed information:
The role of turbine condensate system:
< p>Heat exchange equipment that converts steam discharged from the driven steam turbine into condensed water. After the steam has completed its expansion process in the steam turbine, during the condensation process, the volume of the exhaust steam decreases sharply and a high vacuum is formed in the space initially filled with steam. The condensate water is transported into the boiler via the condensate water pump through the feed water heater, feed water pump, etc., thus ensuring the continuous running of the entire thermal cycle. Its functions are as follows:1. Create a higher vacuum at the exhaust portement of the steam turbine. The steam expands to the lowest pressure in the steam turbine, increases the available enthalpy drop of the steam in the steam turbine, and improves the thermal efficiency of the cycle.
2. Condense the steam discharged from the low pressure cylinder of the steam turbine into water and return it to the boiler for circulation.
3. Collect various hydrophobic materials to reduce the loss of carbonated water.
4. The condenser is also used to add desalinated water (normal water replenishment).
Baidu Encyclopedia - Main condensate water purification system
Baidu Encyclopedia - Condensate water purification system