The Power Plant Water Circulation Characterization And Line Monitoring

Since the reform and opening up, power plant equipment manufacturing and power plants rapidly and development, gradually narrowing the gap between China and the world’s advanced level. In recent years, countries in the world in advocating low-carbon, environmental protection, the development of nuclear, wind, solar, bio-energy and other clean energy quickly, but because of the amount of energy and technology, China’s electricity production is still mainly to thermal power. The coal-fired power plants such as boilers, generators and turbine three parts. The boiler is the production of hot water or steam heat transfer equipment, widely used in industrial enterprises, power plants and other aspects of its stability and security of a direct impact on the stability and security of the other units. Therefore, the boiler water circulation characterization and water circulation line monitoring system has caused greater concern.Access to a large number of relevant literature to understand the boiler water circulation of the status quo, and the status of the development of monitoring software, and introduced the boiler water circulation principle. Natural circulation boiler for the study, according to the principle of natural circulation boiler water circulation and calculation methods, research in the calculation of the characteristics of the boiler water circulation model and solution. First, the sub-water circuit, proration the riser differential pressure. First determine the starting boiling point before the calculation that start boiling point only water in the bottom of the pipe segment, while the top of the pipe segment for the soda mixture. Then, create a computational model of natural circulation boiler water circulation, and Quasi-Newton Method with parameters and graphical method to solve, find the circulation loop flow and operating pressure differential in order to determine the safety and reliability of the cycle. In order to be able to predict in advance the analysis of the water cycle failure, boiler water circulation monitoring system research and design. Main design of the system hardware, used to complete the data collection and aggregation; design software with on-site configuration features, online configuration boiler, sensors and other configuration parameters, real-time data display, trending, historical data storage, query, print function through the network interface to transfer data to the plant-level monitoring information system. Research and development of on-line monitoring and fault diagnosis system on-site installation and testing, and the test data analysis, provides the basis for the safe operation of the power plant. Finally, the work done in this article is a summary of the need for, and research projects were discussed.