【摘要】：本文研究一種高效的空氣壓縮站監(jiān)控系統(tǒng)�？諝鈮嚎s機作為工業(yè)生產過程中的壓縮氣體輸出設備,廣泛應用于生產制造行業(yè)。在制管廠中,運用空氣壓縮機產生的壓縮氣體對半成品鋼塑管進行噴砂。對企業(yè)而言,由于對壓縮氣體的需求較大,均需要建立兩臺以上的空氣壓縮機組成的空壓站�？諌赫揪褪菈嚎s空氣站,由多臺空氣壓縮機、儲氣罐、空氣處理凈化設備、冷干機組成。目前,在國內大多數(shù)企業(yè)中,對空壓站內所有設備的控制方式均為人工控制、單機運行。這些控制方式導致空壓站內設備的空轉現(xiàn)象較多而造成電能的極大浪費。另外,不能根據(jù)現(xiàn)場的用氣量情況對空壓站內的設備進行控制,因此無法滿足用氣車間對壓縮氣體壓力穩(wěn)定的要求。論文闡述了一套高效空壓機監(jiān)控系統(tǒng)。該監(jiān)控系統(tǒng)按功能劃分為:輸入輸出模塊,空壓機控制模塊,參數(shù)自整定的模糊PID控制模塊,順序控制模塊,通訊模塊和報警模塊。在各模塊的作用下,監(jiān)控系統(tǒng)根據(jù)空壓站輸出壓力,自動控制整個空壓站。使壓縮氣體的壓力保持在穩(wěn)定的范圍內,實現(xiàn)高效生產。也使空氣壓縮機的運行更加安全可靠,從而達到恒壓控制、節(jié)能環(huán)保、節(jié)約人力資源的目的。參數(shù)自整定的模糊PID控制模塊是監(jiān)控系統(tǒng)的重點。模糊控制器可以根據(jù)空壓站輸出壓力偏差及偏差變化率實時調節(jié)PID控制的三個參數(shù)和監(jiān)控系統(tǒng)的運行參數(shù),由此改變空壓站內設備的工作狀態(tài),以滿足用氣車間對總管壓力值的要求。本監(jiān)控系統(tǒng)的控制程序和人機界面分別應用西門子STEP 7軟件和Win CC軟件進行開發(fā)。用戶在電腦上便可以控制空氣壓縮機的運行方式以及監(jiān)測到整個空壓站內各設備的實時運行參數(shù)。監(jiān)控系統(tǒng)可以讀取到設備的工作電壓與工作電流值,通過程序中的計算程序,算出機器的實際功耗,可以實現(xiàn)能源的監(jiān)測。此外,該系統(tǒng)還具備歷史查詢功能和趨勢分析功能,為生產分析、流程管理提供了有效的手段。通過該監(jiān)控系統(tǒng)的控制,在保證生產用氣的前提下,整個空壓站的用電量較手動控制節(jié)省20%,同時還節(jié)省了大量的人工成本。該監(jiān)控系統(tǒng)為企業(yè)實現(xiàn)高效生產、降低成本、提高經濟效益奠定了良好的基礎。
[Abstract]:In this paper, an efficient air compression station monitoring system is studied. Air compressor, as a compressed gas output equipment in industrial production, is widely used in manufacturing industry. In pipe making plant, semi-finished steel plastic pipe is sandblasted with compressed gas produced by air compressor. For enterprises, because of the large demand for compressed gas, two or more air compressors should be built. Air pressure station is compressed air station, composed of multiple air compressors, gas storage tanks, air treatment and purification equipment, cold drying machine. At present, in most domestic enterprises, the control mode of all equipments in the air compressor station is manual control and single machine operation. These control methods lead to more idling phenomena of the equipment in the air compressor station, resulting in a great waste of electric energy. In addition, the equipment in the air pressure station can not be controlled according to the gas consumption in the field, so it can not meet the requirements of the pressure stability for compressed gas in the gas workshop. This paper describes a set of high-efficiency air compressor monitoring system. The monitoring system is divided into input and output module, air compressor control module, fuzzy PID control module with self-tuning parameters, sequence control module, communication module and alarm module. Under the action of each module, the monitoring system automatically controls the whole air pressure station according to the output pressure of the air pressure station. Keep the pressure of compressed gas in a stable range to achieve efficient production. Also make the operation of air compressor more safe and reliable, so as to achieve constant pressure control, energy conservation and environmental protection, save human resources. Fuzzy PID control module with self-tuning parameters is the focus of monitoring system. The fuzzy controller can real-time adjust the three parameters of PID control and the operating parameters of the monitoring system according to the output pressure deviation and deviation variation rate of the air compressor station, thereby changing the working state of the equipment in the air compression station. To meet the pressure requirements of the main pipe in the gas workshop. The control program and man-machine interface of this monitoring system are developed by Siemens STEP 7 software and Win CC software respectively. On the computer, the user can control the operation mode of the air compressor and monitor the real-time operation parameters of the equipment in the whole air compressor station. The monitoring system can read the operating voltage and current value of the equipment, calculate the actual power consumption of the machine by the calculation program in the program, and realize the energy monitoring. In addition, the system also has historical query function and trend analysis function, which provides an effective means for production analysis and process management. Through the control of the monitoring system, the power consumption of the whole air compressor station is saved by 20% compared with manual control, and a large amount of labor cost is also saved under the premise of ensuring the production gas consumption. The monitoring system lays a good foundation for enterprises to achieve efficient production, reduce costs and improve economic benefits.
【學位授予單位】：東華大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH45;TP277

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