Intelligent variable frequency cooperative control system of water circulation heating pipe network of tunnel fluidized furnace
By constructing an intelligent variable frequency collaborative control system for the tunnel fluidized bed, the problem of time misalignment between heat transfer and material demand in the tunnel fluidized bed was solved, achieving unified timing alignment between heat transport and material demand, improving thermal efficiency and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING SHANGJING ZHIZAO TECH CO LTD
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-17
AI Technical Summary
In the continuous production of large-scale tunnel fluidized beds, existing control strategies lead to a time mismatch between heat transfer and material demand, resulting in low thermal efficiency and additional power loss. Furthermore, the parallel control of multiple variable frequency pumps causes flow distribution imbalance and pressure differential mixing.
A mapping model reflecting the axial thermal interaction between the tunnel furnace body and the heating pipe network is constructed to analyze the actual thermal power of each furnace section. Based on hydraulic parameters and bed-side thermal resistance, the heat transport lag and material displacement time misalignment are quantified to generate the required heat for compensation. The frequency of the variable frequency pump is optimized through closed-loop feedback calculation to achieve flow distribution and energy consumption optimization.
By aligning heat transfer and material demand in a unified time sequence, the dynamic matching accuracy of heat exchange targets in each temperature zone is improved, the flow competition and differential pressure oscillation of multiple pumps in parallel are suppressed, and the operating energy consumption of the system's variable frequency pump set is reduced.
Smart Images
Figure CN122408476A_ABST