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- W4308821878 abstract "Abstract In order to study the influence of different guide vane angle variation on performance characteristics of reactor coolant pump (RCP) during idling process, the external characteristics of RCP model with five different guide vane angles at idling process state were analyzed. Radial force characteristics and blade load characteristics of RCP were analyzed. The results show that the head and torque changes of pump with different guide vane angles in different idle period are consistent. The head of DY1model (Guide vane angle increases sharply first and then decreases gently, which convexity is large) is the highest and torque is small. The head drop rate of DY5 model (Guide vane decreases first and then increases, and the concavity is large) is the highest and torque is the largest. With the idling, the radial force of impeller and guide vane decreases gradually. The radial force of DY5 model impeller is small and the fluctuation range is weak. The radial force of DY4 model（Guide vane shows concavity change with gentle increase）impeller before idling is the largest. In the nonlinear transition of idle period, the total radial force of DY4 model is 235N when idling for 32s, which is nearly 30 times lower than that before idling, and the radial force decreases the most. In different idling periods, the radial force amplitude of guide vane of DY5 model is the largest, and the radial force decrease amplitude of guide vane of DY4 model is the largest in the whole idling period. The impeller blade load of DY4 and DY5 model pumps with concavity guide vane angle change law is significantly higher than that of other model pumps after the relative position of streamline is 0.6. When the relative position of the guide vane along the streamline direction is less than 0.5, the load fluctuation of the guide vane of each model pump is large. when the relative position is greater than 0.5, the blade load fluctuation is relatively small." @default.
- W4308821878 created "2022-11-16" @default.
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- W4308821878 date "2022-11-10" @default.
- W4308821878 modified "2023-09-24" @default.
- W4308821878 title "Study on the influence of guide vane angle on performance characteristics of reactor coolant pump during idling" @default.
- W4308821878 doi "https://doi.org/10.21203/rs.3.rs-2221915/v1" @default.
- W4308821878 hasPublicationYear "2022" @default.
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