气体增压阀体积效率测定及节能研究

发布时间：2018-03-05 22:26

本文选题：气体增压阀　切入点：体积效率　出处：《大连海事大学》2012年硕士论文　论文类型：学位论文

【摘要】：在工厂空气动力的节能活动中,通过采用降低系统整体压力,仅在需要高压的地方提高压力的方法,可以降低工厂全体的耗电量。气体增压阀(Gas-booster)是一种基于帕斯卡原理依靠活塞两端所受压力不平衡从而推动活塞压缩气体的气体增压装置,可以通过它在气动生产系统中较为便捷地获得局部高压以满足个别工种的供气需要。然而,增压阀在提高空气压力的同时自身会消耗一定压缩空气,故增压阀自身存在一个工作效率,定义“标准状态下,一段时间内,由增压阀出口流出的气体体积与由入口流入的气体体积之比”增压阀此时的体积效率,以此衡量增压阀的工作效率。本文首先通过理论计算和建模仿真分析了影响增压阀体积效率的因素,并分别分析了各因素对增压阀体积效率具体影响程度。随后,通过比较不同入口压力、不同增压比、不同工作方式等多组实验中所采集的入口压力、出口压力、驱动腔压力、增压腔压力、入口流量、出口流量等数据,分析了A公司某型号增压阀的流量特性,即：当系统的气源压力、初始排气压力、排气流量等工作条件发生变化时增压阀的输出流量与压力的变化情况。由此找出了增压阀体积效率等性能指标的变化规律,分析了增压阀在不同工况下的稳压性能,并绘制出了描述腔内压力-容积关系的P-V曲线。文章在后部结合之前对影响增压阀体积效率因素的研究,提出了对现有增压阀结构进行改进的方案,并就其中一种方案制成了样机,通过实验验证了其效果。
[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.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH134

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