Vacuum pumping system that connects in parallel of thermal power plant

The utility model provides a vacuum pumping system that connects in parallel of thermal power plant which characterized in that: including high -pressure side condenser, low tension side condenser, first vacuum pump, second vacuum pump, third vacuum pump, a deareator, the 2nd deareator and the 3rd deareator, be equipped with steam extraction port on the high -pressure side condenser, be equipped with first evacuation sunction inlet and first evacuation steam drain on the first vacuum pump, be equipped with second evacuation sunction inlet and second evacuation steam drain on the second vacuumpump, be equipped with third evacuation sunction inlet and third evacuation steam drain on the third vacuum pump, the pipeline that steam extraction port passes through the parallel links to each other with first evacuation sunction inlet and second evacuation sunction inlet respectively, and the pipeline that the low tension side condenser passes through the parallel links to each other with second evacuation sunction in