Why the installation of the condensate pump in zero meters?

Used to discharge the condensate pump in steam turbine condenser is called condensate pump, install two commonly, a run, a backup. Because of this pump is working under the condition of high vacuum, and delivery is close to the saturation temperature of the water, so the condensate pump must be installed in the condenser hot well below the surface of 0.5 ~ 1.0 meters, to prevent evaporation of the condensate pump.

(1) whether the unit is in ChunNing steam type condition, running or winter with extraction condition of condensation water pump outlet pipe are frequent vibration, serious when even caused the condensate line part of the insulation layer falls off, in this case, on the one hand pump outlet flow fluctuation is bigger, caused the condenser liquid level is not stable, not at full capacity and stable operation of generating unit, on the other hand to pose a threat to the safe operation of unit. (2) often occur in the operation of the condensate pump cavitation phenomenon.

In order to meet the operation requirements of frequency conversion condensate system after reforming, the need of the original deaerator water level control system and water recirculation control logic, modified to achieve two automatic adjustment system under various operation modes of the condensate pump normal input, and through the corresponding interlock protection logic, realization of variable frequency pump and standby pump power frequency between the interlock function.