本文選題：空氣壓縮機(jī) + 螺桿�。� 參考：《南京理工大學(xué)》2012年碩士論文

【摘要】：空氣壓縮機(jī)是一種產(chǎn)生和輸送壓縮空氣的通用機(jī)械,而螺桿壓縮機(jī)作為一種理想的壓縮機(jī)已經(jīng)引起氣體工業(yè)的更多關(guān)注。它結(jié)構(gòu)簡單、成本低廉且易于維護(hù),已廣泛應(yīng)用于工業(yè)、農(nóng)業(yè)等多個(gè)領(lǐng)域。由于壓縮機(jī)經(jīng)常長時(shí)間連續(xù)的工作,屬于耗電量較多的用電設(shè)備,因此研究螺桿壓縮機(jī)的功率特性對(duì)于節(jié)能減耗很有意義。本文以此為背景,對(duì)螺桿壓縮機(jī)工作過程建立數(shù)學(xué)模型。以齒間容積為研究對(duì)象,求出齒間容積內(nèi)氣體的壓力、溫度等微觀特性,并以此為基礎(chǔ),利用熱力學(xué)定律,求出螺桿壓縮機(jī)軸功率等宏觀特性,并對(duì)其理論消耗功率與實(shí)際消耗功率進(jìn)行分析。而對(duì)于軸功率的檢測(cè)則以傅里葉變換為基礎(chǔ),對(duì)采樣的信號(hào)進(jìn)行加窗處理,并采用一種插值算法進(jìn)行校正。系統(tǒng)主要是由電機(jī)、壓縮機(jī)、傳感器、采集卡和計(jì)算機(jī)組成。由LV25-P和LT308-S7采集電壓和電流信號(hào),通過采集卡PCI1712轉(zhuǎn)換成標(biāo)準(zhǔn)信號(hào)送入計(jì)算機(jī)中,先通過改進(jìn)的濾波算法進(jìn)行濾波,然后進(jìn)行加B-H窗和雙峰插值算法的FFT運(yùn)算,最后通過VB界面顯示結(jié)果。為提高效率,FFT算法由C語言編寫并創(chuàng)建成動(dòng)態(tài)鏈接庫由VB實(shí)現(xiàn)調(diào)用。最后得到不同情況下的功率變化曲線,并分析不同排氣壓力下的功率變化規(guī)律,所得到的結(jié)論與理論分析結(jié)果一致,運(yùn)行良好可作為工業(yè)實(shí)際使用。本文所設(shè)計(jì)項(xiàng)目應(yīng)用于蘇州某公司TRL85型螺桿空氣壓縮機(jī)的測(cè)試,系統(tǒng)具有較高的測(cè)試準(zhǔn)確性和實(shí)時(shí)性,達(dá)到了預(yù)期的效果,未來可做進(jìn)一步研究和推廣。
[Abstract]:Air compressor is a kind of universal machinery for producing and conveying compressed air, and screw compressor as an ideal compressor has attracted more attention of gas industry. It is simple in structure, low in cost and easy to maintain. It has been widely used in many fields, such as industry, agriculture and so on. Because the compressor often works continuously for a long time, it belongs to the electric equipment which consumes more electricity, so it is significant to study the power characteristic of screw compressor for saving energy and reducing consumption. Based on this background, the mathematical model of screw compressor working process is established in this paper. Taking the inter-tooth volume as the research object, the micro-characteristics of the gas pressure and temperature in the inter-tooth volume are obtained, and based on this, the macroscopic characteristics of the shaft power of the screw compressor are obtained by using the law of thermodynamics. The theoretical consumption power and the actual consumption power are analyzed. The axis power detection is based on Fourier transform, the sampled signal is windowed and corrected by an interpolation algorithm. The system is mainly composed of motor, compressor, sensor, acquisition card and computer. The voltage and current signals are collected by LV25-P and LT308-S7, and converted into standard signals by the acquisition card PCI1712. The improved filtering algorithm is used to filter the signals, and then the FFT operation with B-H window and bimodal interpolation algorithm is carried out. Finally, the results are displayed through VB interface. In order to improve the efficiency of FFT algorithm written by C language and created dynamic link library by VB. Finally, the power change curve under different conditions is obtained, and the law of power variation under different exhaust pressure is analyzed. The conclusion is consistent with the theoretical analysis result, and it can be used as industrial practice well. The design project is applied to the test of TRL85 screw air compressor in Suzhou company. The system has higher testing accuracy and real time, and achieves the expected effect, which can be further studied and popularized in the future.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH45

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 周雷;針對(duì)XX型號(hào)平臺(tái)慣導(dǎo)測(cè)試系統(tǒng)的研究與實(shí)現(xiàn)[D];南京理工大學(xué);2013年

，

本文編號(hào)：2068379