Loop arrangement for reactor coolant of passive PWR (pressurized water reactor) nuclear power plant

Abstract

The invention provides loop arrangement for a reactor coolant of a passive PWR (pressurized water reactor) nuclear power plant. The loop arrangement is characterized in that a reactor pressure vessel and steam generators are involved, wherein the reactor pressure vessel is provided with a pipe connection section barrel, and the pipe connection section barrel is provided with reactor coolant outlet pipe connection nozzles and reactor coolant inlet pipe connection nozzles; the steam generators are connected with the reactor pressure vessel through a main pipeline. The loop arrangement for the reactor coolant of the passive PWR nuclear power plant has the advantage that the manufacture difficulty and cost of heating sections of main pipelines of reactors of large CAP-series nuclear power plants are reduced through design improvement of primary coolant loops of the reactors; further, the arrangement distance between the reactor pressure vessel and each steam generator is reduced, arrangement of the main system pipeline is facilitated, the radial dimension of a reactor containment is controlled, and the building cost of the whole nuclear power plant is saved.

Description

technical field [0001] The invention relates to the field of pressurized water reactor nuclear power plants, in particular to an arrangement of reactor coolant loops in passive nuclear power plants. Background technique [0002] The third-generation passive nuclear power plants of the CAP series, represented by the CAP1000 nuclear power plant, have become the main reactor types for my country's nuclear power development. The reactor main coolant system of CAP1000 nuclear power plant adopts two-loop arrangement, and each loop consists of one hot section of the main pipe that transfers the reactor coolant from the reactor pressure vessel to the steam generator and two pipes that transfer the reactor coolant from the reactor main cooling The agent pump (referred to as the main pump) is composed of the cold section of the main pipeline that returns to the reactor pressure vessel. The inlet nozzle of each main pump is directly connected with the outlet nozzle of the steam genera...

AI Technical Summary

Problems solved by technology

At present, it is very difficult to develop the main pump of the AP1000 nuclear power plant in the world. If a nuclear power plant with a higher power than the AP1000 is to be developed, it is necessary to develop a main pump with a higher power than the AP1000 nuclear power plant.

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