Optimization Design of the Weight of Reactor Coolant Pump

Reactor coolant pump is a key equipment in nuclear power plants, which has direct impact on the overall weight and the arrangement of nuclear power plants. The optimization design of the weight of the reactor coolant pump is carried out based on colony complex algorithm. Gradient crossover genetic algorithm is also used to optimize the weight of the pump´s inner motor for attaining the optimization result of the pump. Both the algorithms are developed ourselves. The results show that the optimized weight is 12.482% less than the prototype´s, the optimization effect is obvious. The start-up transient and flow coast down transient of the optimized pump are analyzed. The results indicate that the optimized results are feasible. The effects of the operating parameters of primary loop and rotating speed of pump on the weight of reactor coolant pump, and the effects of relevant parameters on the weight of motor is also analyzed in this paper. The corresponding results can provide a reference for engineering design.