堆芯试验台架、电加热棒功率分区的布置方法及系统、电子设备
By employing a power zoning arrangement method for electric heating rods in the reactor test rig, combined with design parameters and CHF number similarity criteria, the axial and radial power distribution of the reactor core is accurately simulated, solving the problem of inaccurate simulation in existing technologies and achieving proportional scaling of the flow channel area and thermal similarity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA NUCLEAR POWER ENGINEERING CO LTD
- Filing Date
- 2025-01-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot accurately simulate the uneven axial and radial power distribution of an actual reactor core in a complete reactor test rig. Furthermore, the design of the electric heating rods cannot meet the requirement of proportional scaling of the cross-sectional area of the flow channels between the rod bundles, resulting in uneven coolant flow and the emergence of hot spots.
A method for arranging the power zones of electric heating rods on a core test bench is adopted. By obtaining design parameters, the zone shape and number of rods under radial and axial power distribution are determined. The power distribution characteristics of the actual core are accurately simulated by using the similarity criterion of critical heat flux density (CHF number) and the segmented series connection method of resistance, ensuring that the cross-sectional area of the flow channel meets the scaling requirements.
It achieves the same axial and radial power non-uniform distribution characteristics between the test bench and the actual core, ensures the proportional scaling of the cross-sectional area of the flow channel between the rod bundles, improves the similarity of thermal conditions and simulation accuracy, and avoids the occurrence of hot spots.
Smart Images
Figure CN119943452B_ABST