Measures Research Of Utility-type Unit Condenser Vacuum Improvement

Based on the analysis to the effect of backpressure variation to the unit capacity, the measure and the correction equation are expounded, which can adapt different condition and unit. Because the traditional definition of condenser optimum vacuum has some defects, the new definition that includes the price of return water is raised, and it can guide the return water pumps running. Rationale the water ejection evacuator and water ring pump running principles and their difference are introduced, the transformations of water ejection evacuator throat and the pool of water ejection evacuator and the pine of deflation to the water ring pump are raised and their efficient performances are analyzed. Expound the cooling measure on turbine drawing feed pump steam extraction. Transform the gland packing of domestic introduction 300 MW units and design the U pipe texture. Calculate the optimal position of low-pressure heater in condenser. All these can increase the vacuum of condenser and improve the unit efficient performance.