Analysis of Specific Operation of Circulating Water System in a Power Station

Affected by the continuous decline of the water level and the reform of the condenser, the actual operating conditions of a company's circulating water pump seriously deviated from the design conditions. Especially in the double pump condition, only one pump can be maintained in normal operation, the other's current is obviously low and the pump body vibrates greatly, and the double pump cannot be maintained in parallel operation. After several field tests and analysis, it was found that when the running head was between the two pump-inflection points of the parallel running, due to the difference in performance between the pump bodies, one of the circulating water pumps runs normally, while the other pump has a sudden current drop and an increase in pump vibration; at the same time, the two pumps have been running for more than ten years, the performance of the equipment is aging, and the head is insufficient, which is one of the main reasons.