The invention provides a condenser vacuum leakproofness detecting
system and method. The detecting
system comprises a
vacuum pump, an air outlet measuring device and a computing device. The
vacuum pump is connected with a condenser, the air outlet measuring device is installed on an air outlet
pipe of an air-water separator of the
vacuum pump, and the computing device is connected with the air outlet measuring device. The vacuum pump is used for discharging air leaking into the condenser and part of steam in the condenser, the air outlet measuring device is used for measuring the
air content in a steam-air mixture discharged out of the air outlet
pipe of the air-water separator of the vacuum pump, and the computing device generates a detection result about the vacuum leakproofness of the condenser according to the
air content and a set condenser leakproofness standard. According to the condenser vacuum leakproofness detecting
system and method, the vacuum leakproofness of the condenser can be accurately judged, and therefore a basis is provided for operation and
maintenance strategy formulation of a unit. In addition, due to the fact that measurement is conducted at the air outlet position, normal operation of the unit will not be affected, and the situation that test accuracy is ensured at the cost of influencing stable operation of a
power grid is avoided.