含阻系统分析方法及其在先导式截止阀阀芯小孔设计中的应用

发布时间：2018-05-16 14:08

本文选题：含阻系统 + 系统设计方法　；参考：《工程设计学报》2017年05期

【摘要】：随着社会和时代的进步,复杂物理系统日益常见,传统的工程分析与设计方法面临着巨大挑战,因此,针对复杂物理系统的诸多参数,研究新的分析方法、提炼海量数据、指导工程分析与设计,显得尤为迫切。从系统分析方法角度,对弹簧滑块系统、直流电路系统、流场压降系统和平板传热热阻系统进行了阐述;对4种物理系统中的重要物理量进行了分析与归纳,提出了含阻系统的设想,其由阻元、过体和势头三个部分组成;在已经具有海量数据的基础上,含阻系统分析方法可通过确立物理系统中的阻元、过体和势头,建立阻元对势头的直接联系,简化物理问题,得到相对准确的结果。同时,采用含阻系统分析方法对先导式截止阀的阀芯设计进行了研究,结果表明,数值模拟和含阻系统分析方法得出的阀芯小孔处的压差和最大汽含率均在2%的误差范围内,这说明含阻系统分析方法可用于指导先导式截止阀阀芯小孔的设计。在海量数据积累的大数据时代,含阻系统分析方法可针对各种类型的复杂物理模型进行工程分析与设计,具有广阔的应用前景。
[Abstract]:With the progress of society and the times, complex physical systems are becoming more and more common, and the traditional engineering analysis and design methods are facing great challenges. Therefore, it is particularly urgent to study new analytical methods, extract massive data and guide engineering analysis and design for many parameters of complex physical systems. The block system, the DC circuit system, the flow field pressure drop system and the plate heat transfer thermal resistance system are expounded. The important physical quantities in the 4 physical systems are analyzed and summarized, and the idea of the resistance system is put forward, which is composed of three parts: resistance element, over body and momentum; on the basis of massive data, the analysis method of resistance system By establishing the resistance element in the physical system, the over body and the momentum, the direct connection of the resistance element to the momentum can be established, the physical problem is simplified, and the relative accurate results are obtained. At the same time, the design of the valve core of the pilot cut-off valve is studied by the method of resistance system analysis. The results show that the valve core of the numerical simulation and the analysis method of the resistance system is small. The pressure difference and the maximum gas holdup at the hole are within the error range of 2%, which indicates that the analysis method of the resistance system can be used to guide the design of the small hole in the valve core of the pilot type cut-off valve. Application prospects.

【作者单位】：浙江大学化工机械研究所;隆德大学能源科学系;
【基金】：浙江省自然科学基金重点项目(LZ17E050002) 浙江省重点科技创新团队项目(2011R50005)
【分类号】：TH134

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