一种基于反函数拟合的汽轮机调门流量特性优化方法
By optimizing the flow characteristics of the turbine regulating valve using the inverse function fitting method, problems such as high-pressure regulating valve oscillation and uneven rotor force were solved, achieving high-precision regulating valve flow optimization and improving the turbine's economy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN XIRE ENERGY SAVING TECH
- Filing Date
- 2022-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have problems during steam turbine operation, such as high-pressure regulating valve oscillation, excessive valve opening, uneven rotor stress, large speed fluctuations, and increased bearing temperature. Furthermore, traditional fitting methods cannot effectively predict valve flow, which affects both economic efficiency and safety.
An inverse function fitting method is adopted, which uses linear least squares polynomial fitting to fit the relationship between valve opening and relative flow rate. The LAR method is combined to optimize the fitting. The flow rate curve of the single valve is discretized by feature points, and the flow distribution interval is calculated based on the valve point flow rate and overlap. The flow characteristics of the valve under sequential valve control are optimized.
It achieves high-precision fitting of the flow characteristic curve of the single-adjustment valve, optimizes the flow characteristics of the turbine control valve, improves the economic efficiency and stable operation of the unit, simplifies data processing, is suitable for PLC programming, and enhances control accuracy.
Smart Images
Figure CN115330080B_ABST