發(fā)布時(shí)間：2018-07-07 15:41

  本文選題：活塞壓縮機(jī) + 氣量無級(jí)調(diào)節(jié)　； 參考：《浙江大學(xué)》2011年碩士論文

【摘要】：部分行程頂開進(jìn)氣閥排氣量調(diào)節(jié)方式不僅實(shí)現(xiàn)了排氣量全量程的無級(jí)連續(xù)調(diào)節(jié),而且使壓縮機(jī)僅壓縮實(shí)際需要的氣體,在減少排氣量的同時(shí)也降低了能耗。然而,往復(fù)式壓縮機(jī)使用氣量無級(jí)調(diào)節(jié)系統(tǒng)后,出現(xiàn)了排氣量低于設(shè)定值、活塞環(huán)磨損、氣缸出現(xiàn)不正常的響聲等故障,使此系統(tǒng)在國內(nèi)推廣應(yīng)用受到了限制。因此,分析氣量調(diào)節(jié)系統(tǒng)對(duì)壓縮機(jī)的動(dòng)力學(xué)影響,研究引發(fā)故障所產(chǎn)生的原因,使這種節(jié)能降耗的壓縮機(jī)氣量調(diào)節(jié)方法能夠得到廣泛應(yīng)用是十分必要。 論文以“十一五”科技支撐計(jì)劃項(xiàng)目“高效節(jié)能壓縮機(jī)關(guān)鍵技術(shù)研究”(編號(hào)：2008BAF34B13)為依托,對(duì)氣量調(diào)節(jié)工況下的壓縮機(jī)熱力循環(huán)過程和氣閥運(yùn)動(dòng)規(guī)律進(jìn)行了較為深入的理論和實(shí)驗(yàn)研究；搭建了能夠?qū)崿F(xiàn)0～100%全量程氣量無級(jí)調(diào)節(jié)的實(shí)驗(yàn)裝置；建立了活塞與曲軸的機(jī)械運(yùn)動(dòng)模型,對(duì)氣量調(diào)節(jié)工況下的壓縮機(jī)機(jī)械動(dòng)力學(xué)性能作了全面分析；通過實(shí)驗(yàn)測(cè)量與計(jì)算機(jī)模擬相結(jié)合的方法對(duì)液壓系統(tǒng)進(jìn)行分析,為排除因液壓系統(tǒng)不正常造成的壓縮機(jī)故障提供理論依據(jù)。 本文的主要研究內(nèi)容有： 1.研究了氣量無級(jí)調(diào)節(jié)工況下壓縮機(jī)熱力循環(huán)模型,理論計(jì)算了排氣量與進(jìn)氣閥頂開角度的變化規(guī)律,實(shí)驗(yàn)室壓縮機(jī)試驗(yàn)表明計(jì)算結(jié)果同測(cè)量基本吻合。 2.研制了實(shí)驗(yàn)室無級(jí)氣量調(diào)節(jié)系統(tǒng)及相關(guān)的信號(hào)測(cè)試系統(tǒng)與控制系統(tǒng),為無級(jí)氣量調(diào)節(jié)系統(tǒng)的運(yùn)行狀態(tài)監(jiān)控及常見故障分析提供實(shí)驗(yàn)依據(jù)。 3.建立了壓縮機(jī)氣量調(diào)節(jié)運(yùn)動(dòng)模型,詳細(xì)分析了對(duì)無級(jí)氣量調(diào)節(jié)系統(tǒng)可能引起的壓縮機(jī)力學(xué)性能的變化,和可能引發(fā)的典型故障及其解決方法。 4.通過實(shí)驗(yàn)測(cè)量與理論分析,對(duì)于無級(jí)氣量調(diào)節(jié)系統(tǒng)中的關(guān)鍵裝置—液壓系統(tǒng)的常見故障進(jìn)行了全面分析,并給出了相應(yīng)的解決方案。研究結(jié)果為液壓系統(tǒng)的管路布置與液壓系統(tǒng)的設(shè)計(jì)提供了理論依據(jù)。
[Abstract]:The way of regulating the exhaust volume of the partial stroke ejector inlet valve not only realizes the stepless and continuous adjustment of the total range of exhaust volume, but also makes the compressor compress only the actual required gas and reduce the energy consumption while reducing the exhaust volume. However, after the reciprocating compressor uses the stepless regulating system of gas flow, the exhaust volume is lower than the set value, the piston ring is worn, the cylinder has abnormal noise and so on, which limits the popularization and application of the system in China. Therefore, it is necessary to analyze the dynamic effect of the gas volume regulation system on the compressor, to study the causes of the failure, and to make the gas volume regulation method of the compressor energy saving and reducing consumption widely used. The paper is based on the "Research on key Technologies of High efficiency and Energy-saving Compressor" (No.: 2008BAF34B13), which is the "11th Five-Year Plan". In this paper, the thermodynamic cycle process of compressor and the law of valve movement under the condition of gas flow regulation are studied theoretically and experimentally, and an experimental device is set up to realize the stepless regulation of 0 ~ 100% full range gas flow. The mechanical motion model of piston and crankshaft is established, and the mechanical dynamic performance of compressor under the condition of air flow regulation is comprehensively analyzed, and the hydraulic system is analyzed by combining experimental measurement with computer simulation. It provides a theoretical basis for eliminating the compressor malfunction caused by the abnormal hydraulic system. The main contents of this paper are as follows: 1. In this paper, the thermodynamic cycle model of compressor under the condition of stepless air flow regulation is studied, and the variation law of exhaust volume and inlet valve top opening angle is calculated theoretically. The experimental results of the laboratory compressor show that the calculated results are in good agreement with the measurement. 2. In this paper, the stepless gas regulation system in laboratory and the related signal testing and control system are developed, which provide the experimental basis for the monitoring of the running state and the analysis of common faults of the stepless air flow regulation system. In this paper, the model of compressor gas flow regulation is established, and the variation of compressor mechanical performance caused by stepless gas regulation system is analyzed in detail, and the typical faults that may be caused and their solutions are also discussed. 4. Through experimental measurement and theoretical analysis, the common faults of hydraulic system, a key device in stepless air flow regulation system, are comprehensively analyzed, and the corresponding solutions are given. The results provide a theoretical basis for the piping arrangement of hydraulic system and the design of hydraulic system.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH457

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本文編號(hào)：2105428