Intelligent staged desuperheating system and method for low-pressure cylinder of steam turbine
The intelligent staged desuperheating system, which uses coupled calculations of the last-stage blade temperature and multi-dimensional exhaust parameters, solves the problem of low control accuracy in existing turbine low-pressure cylinder desuperheating systems, and achieves precise temperature control and adaptive safety protection under complex operating conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUANENG POWER INT INC
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
The existing low-pressure cylinder desuperheating system of steam turbines has low control precision, poor flexibility, and is not intelligent or efficient enough, which cannot meet the safety protection requirements of thermal power units under flexible operation.
The system employs a final-stage blade temperature monitoring unit, an exhaust parameter monitoring unit, and an intelligent control unit. By combining multi-dimensional exhaust parameters for coupled calculation, it generates graded control commands. These commands are then executed by the desuperheating water actuator to perform the corresponding level of desuperheating water atomization spraying action, forming a closed-loop intelligent control throughout the entire process.
It significantly improves the accuracy and response speed of low-pressure cylinder desuperheating regulation, avoids problems such as regulation lag, overshoot and under-spray, reduces the risk of blade water erosion, and improves the safety and automation level of unit operation.
Smart Images
Figure CN122407309A_ABST