本文選題：離心式壓縮機 + 喘振��； 參考：《東北大學》2012年碩士論文

【摘要】：在冶金企業(yè)中,離心式壓縮機是非常重要的動力輸送設備,為了確保其能夠穩(wěn)定、安全、高效的工作,設計并實現(xiàn)離心式壓縮機的計算機控制是十分重要的。本文結(jié)合離心式壓縮機的特點就控制系統(tǒng)的結(jié)構(gòu)和控制方法進行了深入分析和研究,從信號采集、信號分析、PID控制運算、輸出控制、安全保護等整個壓縮機控制系統(tǒng)回路的各個組成環(huán)節(jié)出發(fā),進行了分析研究和改進升級。在提高控制系統(tǒng)的控制精度的基礎上,進一步提高了離心式壓縮機運行的可靠性、安全性、穩(wěn)定性,為高爐噴煤比提高后的穩(wěn)定生產(chǎn),提供了安全可靠的保障。 離心式壓縮機的控制是以邏輯控制、聯(lián)鎖控制、防喘振控制為主。從這個方面考慮,具備較強邏輯控制功能的PLC系統(tǒng)是一個理想的選擇。從性能上來看,PLC產(chǎn)品已經(jīng)具備了很強的模擬量處理能力和穩(wěn)定性,能夠滿足本控制系統(tǒng)對模擬信號處理和穩(wěn)定性的要求；從系統(tǒng)結(jié)構(gòu)來看,PLC系統(tǒng)兼容工業(yè)以太網(wǎng)協(xié)議,從而為系統(tǒng)間的通訊和擴展提供了更多的空間。因此,選擇PLC系統(tǒng)作為控制系統(tǒng)的主體兼顧了設備投資和控制效果。 本文具體研究內(nèi)容是離心式壓縮機控制系統(tǒng)硬件架構(gòu)的設計和改造、控制模型的應用及機組現(xiàn)場數(shù)據(jù)在線監(jiān)控和操作。本文主要進行了PLC控制系統(tǒng)硬件結(jié)構(gòu)設計、控制系統(tǒng)控制模型設計、壓縮機防喘振控制系統(tǒng)的研究設計。 結(jié)合論文研究工作所研制的離心式壓縮機控制系統(tǒng)已經(jīng)在某鋼鐵集團公司投入實際運行,控制系統(tǒng)性能穩(wěn)定,控制效果良好。
[Abstract]:In metallurgical enterprises, centrifugal compressor is a very important power conveying equipment, in order to ensure its stability, safety and efficient work, it is very important to design and realize the computer control of centrifugal compressor. According to the characteristics of centrifugal compressor, the structure and control method of the control system are deeply analyzed and studied in this paper. The signal collection, signal analysis, pid control operation and output control are carried out. Safety protection and other components of the compressor control system are analyzed and upgraded. On the basis of improving the control precision of the control system, the reliability, safety and stability of the centrifugal compressor are further improved, which provides a safe and reliable guarantee for the stable production of the blast furnace after the coal injection ratio is increased. Centrifugal compressor control is mainly logic control, interlock control, anti-surge control. From this point of view, the PLC system with strong logic control function is an ideal choice. In terms of performance, PLC products already have strong analog processing capacity and stability, which can meet the requirements of analog signal processing and stability in this control system, and the PLC system is compatible with industrial Ethernet protocol from the point of view of system structure. This provides more space for communication and extension between systems. Therefore, the PLC system is chosen as the main part of the control system, and the equipment investment and control effect are taken into account. This paper focuses on the design and reconstruction of the hardware architecture of the centrifugal compressor control system, the application of the control model, and the on-line monitoring and operation of the unit field data. In this paper, PLC control system hardware structure design, control system control model design, compressor anti-surge control system research and design. The centrifugal compressor control system developed in this paper has been put into practice in a certain iron and steel group company. The control system has stable performance and good control effect.
【學位授予單位】：東北大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH452;TP273

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