筒式节流阀设计.doc

目录 毕业设计任务书…………………………………………………………………………..Ⅰ 开题报告…………………………………………………………………………………..Ⅱ 指导教师审查意见………………………………………………………………………..Ⅲ 评阅教师评语……………………………………………………………………………..Ⅳ 答辩会议记录……………………………………………………………………………..Ⅴ 中文摘要…………………………………………………………………………………..Ⅵ 1 前言………………………………………………………………………………………1 1.1 阀门的分类……………………………………………………………………….2 1.2 阀门的主要参数………………………………………………………………….3 2 选题背景…………………………………………………………………………………5 2.1 题目来源………………………………………………………………………….5 2.2 研究目的和意义………………………………………………………………….5 2.3 国内外研究情况及发展趋势…………………………………………………….6 2.4 本文研究的主要内容…………………………………………………………….7 3 设计论述……………………………………………………………............................…7 3.1 节流阀的特点…………………………………………………………………….7 3.2节流阀的工作原理………………………………………………………………..8 3.4节流阀的结构组成………………………………………………………………..9 3.5 筒式节流阀设计与计算………………………………………………........…….9 4 节流阀强度校核..............................................................................................................17 4.1 阀体壁厚校核………………………………………………………...................17 4.2 阀杆强度校核…………………………………………………………………...18 4.3 阀座的应力校核………………………………………………………………...21 4.4 阀杆螺纹的强度校核…………………………………………………………...21 5 节流口流量分析…………………………………………………………………......…22 5.1 节流口的流量特性公式…………………………………………………….......22 5.2 影响流量稳定性的因素……………………………………………………...…23 6 总结………………………………………………………………………………......…25 参考文献……………………………………………………………………………......…26 致谢…………………………………………………………………………………......…27 筒式节流阀设计 [摘要] 阀门作为管道的重要控制元件，广泛应用于石油、化工、冶金、天然气输送、发电站、城市供水等国民经济的各个部门。构造较简单，便于制造和维修，成本低。节流阀是钻井井控管汇中的关键设备The design of barrel type throttle valve Student：Chen jie Supervisor：Li Meiqiu [Abstract] The valve as pipelines important controlling element is widely applied in each department of national economy such as petroleum, chemical, metallurgy, natural gas transportation, power station and urban water supply. The throttle valve is more widely used because of simple constructs, convenient for the manufacture and the maintenance and low cost. The throttle valve is important equipment in the well-control header，it can be put in any position according to the pressure on