催化裝置富氣壓縮機(jī)控制系統(tǒng)的設(shè)計與實現(xiàn)
[Abstract]:Centrifugal compressor is a kind of high speed rotating machine, which can meet various demands of gas compression in industry. As a kind of industrial equipment, it is widely used in petroleum, chemical and natural gas pipelines. In many important departments such as refrigeration and smelting, its safe and reliable operation directly affects the economic benefits of the plant, so it has become the core equipment that has attracted much attention. With the development of science and technology, the compressor has been greatly improved in performance and safety and reliability in operation. However, centrifugal compressor also has some shortcomings, such as narrow stable working conditions, easy to surge and so on. In addition, the stable operation of centrifugal compressors is also affected by other conditions, such as load, gas properties, temperature, etc. It can be said that the control of centrifugal compressors is a more complicated field. Therefore, the design of a reliable control system plays a decisive role in the stable operation of the compressor. The surge of centrifugal compressor is very harmful to the unit. It must be equipped with a special control system to prevent surge. In this paper, the anti-surge control of centrifugal compressor is studied in order to ensure its safe and stable operation at the same time. In order to realize the optimal control, the advanced control strategy of compressor not exceeding the safety margin and running close to the anti-surge control line is adopted, the opening degree of anti-surge valve is reduced, the speed of compressor is reduced, and the centrifugal compressor is operated efficiently and energy saving. On the basis of analyzing the working principle of compressor, this paper systematically expounds the structure of compressor control system, interlocking logic, speed control, anti-surge control, advanced control and so on. Based on the retrofit of the control system of the rich gas compressor in a certain plant, the man-machine interface, compressor performance curve, anti-surge control and interlock control are designed, and the friendly operation interface is realized. The complete monitoring function has greatly improved the running life of the compressor control system and achieved better economic benefits.
【學(xué)位授予單位】:西安石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TH452
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