| 摘要 |
PURPOSE:To improve the efficiency of the operating performance of a reactor and to maintain the improvement of safety, by measuring the flow speed distribution of the coolant at the entrance of the core part, computing the flow rate and flow rate distribution, thereby facilitating the grasp of the inflow distribution of the coolant into the core part of the reactor. CONSTITUTION:At a sensor 33 which is arranged in a lower prime 13, a total pressure and a satatic pressure to the direction of the core part 2 are obtained at the measuring position. Said total pressure and static pressure are guided to a pressure transducer 38 as a dynamic pressure through a pressure transmitting pipe 36. Then an electric signal is sent to an operating part 51. The flow speed at the measuring position, where each sensor 33 is located, is computed based on the temperature of the coolant 11, which is measured at a temperature detector 34, and the like. The flow rate and the flow rate distribution of the coolant 11 to the core part 2 are computed in the operating part 51 based on the flow speed distribution in this way. |
