Control program, controller, and boiler system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Boiler groups with multiple boilers face inefficiencies in combustion control, leading to start-and-stop losses and poor load follow-up performance due to differences in combustion efficiency between low and high combustion modes.
Innovation Solution
A control program and controller that shift all high-efficiency control subject boilers to a high-efficiency combustion position and then incrementally shift additional boilers to higher combustion positions as needed to maintain high efficiency and prevent start-and-stop operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If combustion control is based on high combustion to maintain high combustion efficiency, then combustion efficiency is improved, but the number of boilers must be increased as desired loads increase, causing delay in response and deteriorating desired load follow-up performance
Solution Approach 1:
The system segments the boiler group into multiple controllable units, each capable of operating at different combustion positions. This segmentation allows individual boilers to respond independently to load changes, with some boilers adjusting combustion intensity while others remain stable, thereby improving overall response speed without sacrificing combustion efficiency.
Solution Approach 2:
The system enables dynamic adjustment of combustion positions for each boiler based on real-time load demands. When load increases, boilers can quickly transition between combustion positions rather than requiring new boilers to start, improving response speed while maintaining optimal combustion efficiency through continuous position optimization.
2Speed
If the number of combustion-subject boilers is increased to improve desired load follow-up performance, then response speed is improved, but combustion efficiency decreases due to operation at suboptimal combustion positions
Solution Approach 1:
Instead of changing the number of operating boilers, the system changes the combustion position parameter of existing boilers to match load demands. Each boiler operates at its most efficient combustion position (low, intermediate, or high) selected based on current load and boiler characteristics, maintaining high combustion efficiency while achieving fast response through parameter adjustment rather than physical boiler count changes.
Solution Approach 2:
The system pre-configures multiple combustion positions for each boiler and maintains readiness to switch between them. This preliminary preparation of combustion states allows immediate response to load changes without sacrificing efficiency, as boilers are already positioned to operate optimally at various load levels.
Data Source
AI summary
A storage medium stores a control program including program code for, in the case of increasing a quantity of combustion in the boiler group, after a high-efficiency combustion shift signal that makes the shift to the high-efficiency combustion position is output to all of the boilers subject to high-efficiency control by which control is conducted on the basis of combustion at the high-efficiency combustion position, outputting a control signal that makes the shift to a higher combustion position than the high-efficiency combustion positions for any one of the high-efficiency control subject boilers.