本文選題：氣體增壓閥　切入點：體積效率　出處：《大連海事大學》2012年碩士論文　論文類型：學位論文

【摘要】：在工廠空氣動力的節(jié)能活動中,通過采用降低系統(tǒng)整體壓力,僅在需要高壓的地方提高壓力的方法,可以降低工廠全體的耗電量。氣體增壓閥(Gas-booster)是一種基于帕斯卡原理依靠活塞兩端所受壓力不平衡從而推動活塞壓縮氣體的氣體增壓裝置,可以通過它在氣動生產(chǎn)系統(tǒng)中較為便捷地獲得局部高壓以滿足個別工種的供氣需要。然而,增壓閥在提高空氣壓力的同時自身會消耗一定壓縮空氣,故增壓閥自身存在一個工作效率,定義“標準狀態(tài)下,一段時間內(nèi),由增壓閥出口流出的氣體體積與由入口流入的氣體體積之比”增壓閥此時的體積效率,以此衡量增壓閥的工作效率。 本文首先通過理論計算和建模仿真分析了影響增壓閥體積效率的因素,并分別分析了各因素對增壓閥體積效率具體影響程度。隨后,通過比較不同入口壓力、不同增壓比、不同工作方式等多組實驗中所采集的入口壓力、出口壓力、驅(qū)動腔壓力、增壓腔壓力、入口流量、出口流量等數(shù)據(jù),分析了A公司某型號增壓閥的流量特性,即：當系統(tǒng)的氣源壓力、初始排氣壓力、排氣流量等工作條件發(fā)生變化時增壓閥的輸出流量與壓力的變化情況。由此找出了增壓閥體積效率等性能指標的變化規(guī)律,分析了增壓閥在不同工況下的穩(wěn)壓性能,并繪制出了描述腔內(nèi)壓力-容積關(guān)系的P-V曲線。 文章在后部結(jié)合之前對影響增壓閥體積效率因素的研究,提出了對現(xiàn)有增壓閥結(jié)構(gòu)進行改進的方案,并就其中一種方案制成了樣機,通過實驗驗證了其效果。
[Abstract]:In plant aerodynamic energy conservation activities, by reducing the overall pressure of the system, increasing the pressure only where high pressure is needed, Gas booster is a gas booster based on the Pascal principle, which drives the piston to compress gas by unbalancing the pressure at both ends of the piston. Local high pressure can be easily obtained in pneumatic production system to meet the gas supply needs of individual types of work. However, the pressurized valve will consume a certain amount of compressed air while increasing the air pressure. Therefore, there is a working efficiency of the booster valve itself, which defines the volumetric efficiency of the booster valve at this time when the volume of the gas flowing out of the outlet of the pressurized valve is in proportion to the volume of the gas entering from the inlet of the pressurized valve within a period of time in the standard state. To measure the efficiency of the booster valve. In this paper, the factors influencing the volumetric efficiency of the pressurized valve are analyzed by theoretical calculation and modeling simulation, and the specific influence degree of each factor on the volumetric efficiency of the pressurized valve is analyzed respectively. Then, by comparing the different inlet pressure and the different booster ratio, The data of inlet pressure, outlet pressure, drive chamber pressure, pressurized chamber pressure, inlet flow rate, outlet flow rate and so on collected in different working modes are analyzed, and the flow characteristics of a certain type of pressurized valve in Company A are analyzed. That is, when the working conditions of the system, such as the air source pressure, the initial exhaust pressure and the exhaust flow rate, change in the output flow and pressure of the pressurized valve, the variation law of the performance indexes such as volumetric efficiency of the booster valve is found out. The steady pressure performance of the pressurized valve under different working conditions is analyzed, and the P-V curve describing the relationship between pressure and volume in the cavity is drawn. Based on the study of the factors affecting the volumetric efficiency of the booster valve before the back part, this paper puts forward a scheme to improve the structure of the existing pressurized valve, and a prototype is made for one of the schemes, and its effect is verified by experiments.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH134

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