题目: 面向增压供水流量配比柔性控制的新型流量阀设计 综合成绩: 指导者评语: 指导者(签字): 年月日 毕业设计(论文)评语 评阅者评语: 评阅者(签字): 年月日 答辩委员会(小组)评语: 答辩委员会(小组)负责人(签字): 年月日 毕业设计说明书(论文)中文摘要 面向增压供水流量配比柔性控制的新型流量阀,是二次供水系统中的重要组成部分。新型流量阀布置在水箱和管网之间,供水时分配水箱和管网中的流量比例,以保证对用户的正常供水。 本课题主要是针对城市供水流量柔性控制设计了一个新型流量阀。流量阀的设计主要分为传动部分和喷射部分。喷口距、喷嘴径、喉管直径以及喉管长度等等参数的选取,直接影响着流量阀的压力损失、负压的大小以及喷射效果,故本课题集中对这些关键参数进行了优化计算。并且对设计好的流量阀进行负压以及压力损失的计算与分析,保证流量阀在工作时能够实现流量配比柔性控制。 关键词二次供水射流泵流量配比柔性控制流量阀 毕业设计说明书(论文)外文摘要 Title Design of a new flow value which can be controlled flexible For pressurized water system Abstract The new flow value, which can be controlled flexible for pressurized water system, is an important part of secondary water supply is arranged between the tank and work. When there is water supply, it distributes flow between the tank and work. So that can ensure the user have normal water supply. The main task of this paper is to design a new flow value which can be controlled flexible for pressurized water design includes transmission parts and jet parts. Nozzle distance, nozzle diameter, pipe diameter and pipe length, and so on are the main parameters of the new flow value. The selection of these parameters, impacts on the flow valve pressure loss, the negative pressure and jet effect, directly. Therefore, this project focuses on how to optimize these key parameters. At the same time, we calculate negative pressure and pressure loss of the designed new flow value flow valve, in order to ensure it works properly. Keywords Jet pump Flow ratio Flexible control New flow valve Secondary water supply 目次 1 绪论………………………………………………………………………… 1 课题来源…………………………………………………………………… 1 本课题研究背景和意义……………………………………………………… 1 本课题研究目标……………………………………………………………… 3 论文内容和结构……………………………………………………………… 4 2 新型流量阀的总体