一种高温反应堆快速减负荷方法和系统
By switching to pressure control mode in the high-temperature reactor unit and using the pressure controller and feedwater flow measurement value to determine the target valve position, the problem of steam generator pressure fluctuation during rapid load reduction of the high-temperature reactor unit is solved, realizing unit pressure stability and rapid response, and improving safety and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD
- Filing Date
- 2023-03-03
- Publication Date
- 2026-07-17
AI Technical Summary
When a high-temperature reactor unit experiences rapid load reduction due to auxiliary equipment or reactor failure, the steam generator outlet pressure fluctuates significantly, which may lead to damage to the steam generator tube sheet or a reduction in its service life.
The turbine electro-hydraulic control system is switched to pressure control mode. The pressure controller is used to stabilize the pressure before the turbine. The target valve position corresponding to the reactor power is determined by the main feedwater flow measurement value of the steam generator. The high-pressure regulating valve is closed to the target valve position at a rate of -100%/min. Redundant signals are set to trigger the rapid load reduction condition to prevent the steam generator outlet pressure from fluctuating.
It effectively maintains stable pressure before the generator, prevents excessive impact on the steam generator tube sheet, ensures the overall lifespan of the unit, improves safety and reliability under accident conditions, and reduces the pressure oscillation time.
Smart Images
Figure CN116543942B_ABST