On-line sludge cleaning system for cooling tower pool in thermal power plant

The invention discloses an on-line sludge cleaning system for a cooling tower pool in a thermal power plant. The on-line sludge cleaning system comprises a pool (2) located at the bottom of a cooling tower (1), a mud filter tank (8) located outside the cooling tower, a sludge dredging device (3) with one end going deep into the bottom of the pool and the other end going deep into the upper part of the mud filter tank, a clear water pool (10) connected with the mud filter tank, and a water circulating device connected with the cooling tower (1) and the pool (2). The on-line sludge cleaning system can carry out on-line operation of cleaning the sludge on the cooling tower pool in the operation of a steam turbine generator set of the thermal power plant, so that the cooling tower pool is kept in the state of no sludge deposition all the time, the circulating water is clean, the circulating water system is kept clean, a steam turbine condenser is kept in a good heat exchange state, and the power generation effici