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叙述了5MW核供热试验堆燃料组件入口和主换热器一次侧阻力系数测定实验。由于供热堆主回路是一体化布置和自然循环的系统,而燃料组件入口和主换热器一次侧是主回路系统中的主要阻力部件,因此,测定这两部分的阻力系数对供热堆的水力学设计和堆芯结构设计具有重要意义。试验用燃料组件及有关堆芯入口构件的尺寸按1:1进行设计。试验系统是一个常温低压水力试验系统,试验通过调节本体前后的节流阀对回路流量和试验工况进行控制。试验确定了5MW核供热试验堆三类元件的阻力系数。主换热器模型用有机玻璃制造,模型与实体的几何比例为1:2。试验测得主换热器一次侧总阻力系数为145。结果表明它们的阻力系数完全满足采用一体化布置和自然循环的供热堆的水力学设计要求。
Describes the 5MW nuclear heating test reactor fuel assembly inlet and main heat exchanger primary resistance coefficient determination experiment. Because the heating reactor main loop is an integrated arrangement and a natural circulation system, and the primary side of the fuel assembly inlet and main heat exchanger is the main resistance component in the main circuit system, it is determined that the resistance coefficient of these two parts affects the heating reactor The hydraulic design and core structure design is of great significance. The test fuel assemblies and the core inlet components are dimensioned 1: 1. Test system is a room temperature low pressure hydraulic test system, the test by adjusting the body before and after the throttle on the loop flow and test conditions to control. The test determined the resistance coefficient of three kinds of components of 5MW nuclear heating test reactor. The main heat exchanger model is made of plexiglass with a geometric ratio of 1: 2 between the model and the solid. The test measured the main heat exchanger primary resistance coefficient of 145. The results show that their resistance coefficients fully satisfy the hydraulic design requirements of a heating reactor with integrated layout and natural circulation.