System for realizing energy conservation and consumption reduction of closed water pump by adopting small-flow pipeline

The invention discloses a system for realizing energy conservation and consumption reduction of a closed water pump by adopting a small-flow pipeline, which comprises a closed expansion water tank, the output end of the closed expansion water tank is connected with the input end of a shutdown cooling water pump through a pipeline, and the output end of the shutdown cooling water pump is connected with a closed water inlet main pipe through a pipeline; the closed water inlet main pipe is provided with a closed water-to-start circulating pump manual valve, the closed water inlet main pipe is connected with the input end of a start circulating pump motor cooler through a pipeline, and the output end of the start circulating pump motor cooler is connected with the closed water return main pipe through a pipeline; and an energy-saving and consumption-reducing mechanism is arranged between the shutdown cooling water pump and the closed water inlet main pipe. By arranging a series of structures, water in the closed