The condenser is one of the main auxiliary machinery in production of thermal power station. It can not only establish and maintain backpressure at the part of exhaust, increase the output and efficiency of the unit, but also can recycle much condensation water for the boiler. For long time operation of the unit, much carbonate incrustation is accumulated in the condenser copper pipe. If the incrustation thickness reaches to1-2mm, the heat transmission effect will be seriously affected. In order to guarantee the operation efficiency of the unit, the sediment on the inner surface of the condenser copper pipe shall be periodically cleaned, most of the methods are mechanical cleaning, chemical cleaning and rubber ball cleaning.