燃气热水锅炉液位监控系统的设计与实现

发布时间：2018-08-20 07:33

【摘要】：随着西部大开发深入推进,特别是“中央新疆工作座谈会”召开后,国家对新疆能源开发、基础设施建设等行业的投入进一步加大,招商引资政策将更加优惠,集中环境治理将是吸引投资的重要环节。本文针对近三年来在乌鲁木齐市集中供热系统煤改气工程的大力推广下,如何体现锅炉的节能、高效、安全与环保成为主要课题。具体以工控机为主要开发平台、工控组态软件为主要开发工具,针对原有热水锅炉监控系统软件,故障率较高,硬件运行速度慢,影响生产等问题,经过控制效果分析,对传统PID控制算法进行了改进。并在查阅大量资料的基础上,择用非常规的编程监控和数据采集相结合的软件控制方法,代替数学模型建模方法,实现锅炉液位实时监控。通过乌鲁木齐通达热力公司现场实地考察,总结改气后的燃气锅炉生产要求,分析煤新型燃气锅炉控制系统的设计要求,燃气热水锅炉工作过程中,对汽包液位控制部分做了相应研究的同时,对PID控制在汽包液位控制中的应用和改进。对受控锅炉液位进行仿真,从调节锅炉液位,使其在充分燃烧和即时检测温度中,做到节能减排,提高生产。参照燃气热水锅炉的需求分析、技术说明和工程标准。为实现其部分功能,模拟通达热力公司监控的需求实现:燃气热水锅炉的液位监控实施调节;采取软件编写程序实时监控,通过组态软件的嵌入实现监控,以提高生产效率和管理水平。从控制的实际运行情况得知,在锅炉控制对象较为复杂,模型参数不确定的情况下,提高了系统的控制精度。实验结果表明,该方法在乌鲁木齐通达热力有限公司实际生产控制过程中切实可行、值得推广。
[Abstract]:With the in-depth development of the western region, especially after the "Central Xinjiang work Symposium" was held, the state's investment in the energy development, infrastructure construction and other industries in Xinjiang will be further increased, and the policy of attracting investment will be more favorable. Centralized environmental governance will be an important part of attracting investment. This paper aims at how to embody the energy saving, high efficiency, safety and environmental protection of boiler under the promotion of coal to gas project of central heating system in Urumqi in the past three years. Taking the industrial control computer as the main development platform and the industrial control configuration software as the main development tool, aiming at the problems of the original hot water boiler monitoring system software, such as high failure rate, slow hardware running speed and affecting production, the control effect is analyzed. The traditional PID control algorithm is improved. On the basis of consulting a large amount of data, the software control method combining unconventional programming monitoring and data acquisition is used instead of the modeling method of mathematical model to realize the real-time monitoring of boiler liquid level. Through on-site investigation of Tongda Thermal Power Company in Urumqi, the production requirements of gas-fired boiler after gas modification are summarized, and the design requirements of the control system of new-type coal-fired boiler are analyzed, and the working process of gas-heated water boiler is analyzed. At the same time, the application and improvement of PID control in drum level control are studied. The controlled boiler liquid level is simulated from regulating the boiler liquid level so that it can save energy and reduce emissions and improve production in full combustion and instant detection temperature. Refer to the gas-fired hot water boiler requirements analysis, technical instructions and engineering standards. In order to realize some of its functions, the requirements of simulating access to thermodynamic company monitoring are realized: the liquid level monitoring of gas-fired hot water boiler is regulated, the real-time monitoring is implemented by software programming, and the monitoring is realized through the embedding of configuration software. To improve production efficiency and management level. It is known from the actual operation of the control that the control precision of the system is improved when the boiler control object is more complex and the model parameters are uncertain. The experimental results show that the method is feasible and worth popularizing in the actual production control process of Urumqi Tongda Thermal Co., Ltd.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TK229.8

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