节能环保燃气锅炉供热控制系统设计

发布时间：2018-01-19 03:08

本文关键词： 供热控制系统氧传感器空燃比节能环保　出处：《大连理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着生活水平地不断提高,燃气锅炉越来越被人们认可和青睐。尤其是燃气壁挂炉凭借其方便、安全和节能环保等显著优势很大程度的提高了用户的生活质量和舒适性。燃气锅炉的性能主要取决于供热控制系统,而控制系统是燃气锅炉的核心。因此,优化和改善供热控制系统,是提高燃气锅炉性能的重要途径。目前市场上燃气锅炉的供热控制系统,其稳定性差、燃烧效率低、安全性能不高,已逐渐无法满足用户对高品质的需求。特别是在欧美一些国家,燃气锅炉不仅要节能高效,而且要达到环保的标准。因此,本文为燃气锅炉设计出一套新型节的闭环供热控制系统。首先,论文介绍了目前燃气供热控制系统的发展现状,并结合论文的设计目标确定内容。其次,分析了燃气供热系统的工作原理,详细阐述了核心部件—氧传感器及燃气比例阀原理,最终设计了供热控制系统的总体方案。论文的核心部分是基于氧传感器的特性设计了闭环燃烧系统,以此来调节混合气空燃比,提高燃烧效率。同时结合系统的特点并对比各类控制算法的不同用途,最终选择PID控制作为系统的控制算法。系统的硬件部分主要由供电部分和主控电路部分组成,供电部分设计能满足主控电路所需所有电压类型需求,主控电路部分主要依托STM32单片机强大功能来设计和实现,包含一些检测电路、驱动电路和显示模块等外围电路。软件部分,论文依据系统实现功能,结合STM32单片机和主控电路的外围电路,分别对各个模块进行设计,最终实现了软件系统的完美融合。最后,针对整个供热控制系统的硬件部分和系统性能进行了测试。通过测试结果表明,所设计控制系统提高了锅炉燃气效率、节约了能源,特别是通过对排气成分检测结果表明,系统的环保要求完全符合设计目标。因此,所设计的系统在燃气供热领域具有重要的实用价值。
[Abstract]:With the continuous improvement of living standards, gas fired boilers are more and more recognized and favored by people, especially gas wall hanging furnace with its convenience. Safety, energy saving, environmental protection and other significant advantages greatly improve the quality of life and comfort of users. The performance of gas-fired boiler mainly depends on the heating control system, and the control system is the core of gas-fired boiler. Optimization and improvement of heating control system is an important way to improve the performance of gas boiler. At present, the heating control system of gas boiler in the market has poor stability, low combustion efficiency and low safety performance. Has been unable to meet the needs of high quality users. Especially in some countries in Europe and the United States, gas boilers not only to save energy and efficiency, but also to meet the standards of environmental protection. This paper designs a new closed-loop heating control system for gas-fired boiler. Firstly, the paper introduces the current development of gas heating control system, and determines the content combined with the design objectives of the paper. The working principle of gas heating system is analyzed, and the principle of oxygen sensor and gas proportional valve is expounded in detail. Finally, the overall scheme of heating control system is designed. The core part of this paper is to design a closed-loop combustion system based on the characteristics of oxygen sensor to adjust the air-fuel ratio of mixture. Improve combustion efficiency. At the same time, combine the characteristics of the system and compare the different uses of various control algorithms. Finally, PID control is chosen as the control algorithm of the system. The hardware part of the system is mainly composed of the power supply part and the main control circuit part. The power supply part is designed to meet all the voltage type requirements of the main control circuit. The main control circuit mainly relies on the powerful function of STM32 microcontroller to design and implement, including some detection circuit, driving circuit and display module peripheral circuit. Software part, according to the system realization function. Combined with the peripheral circuits of STM32 MCU and main control circuit, each module is designed, finally the software system is integrated perfectly. Finally. The hardware part and system performance of the whole heating control system are tested. The test results show that the designed control system improves the efficiency of boiler gas and saves energy. In particular, the test results of exhaust gas composition show that the environmental protection requirements of the system fully meet the design objectives. Therefore, the designed system has important practical value in the field of gas heating.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TK229.8

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