球阀设计大致过程

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1、本科课程设计题目：过程流体机械课程设计学院：机械与自动控制学院专业班级：过程装备与控制工程姓名：学号：二O一六年七月目录摘要··························································I第一章工作原理和设计方法·········································11.1工作原理···················································11.2设计方法····································

2、···············11.2.1球阀结构··················································11.2.2球阀材料··················································21.2.3阀体················································31.2.4球体················································41.2.5阀杆······················

3、··························4第二章球阀尺寸计算················································62.1阀体·······················································62.2阀杆·······················································62.2.1阀杆尺寸···········································62.3球体尺寸计算········

4、·······································62.4密封比压···················································62.5球阀转矩···················································92.6法兰螺栓校核··············································102.7法兰选型··················································11第三章

5、数值模拟计算方法·········································123.1数学模型···················································123.2网格划分···················································133.3边界条件···················································143.4CFD使用步骤····································

6、············14第四章管道内流体模拟结果分析·····································154.1球阀在不同相对开度时的速度分析·······························154.2球阀在不同相对开度时的压力分析·······························164.3球阀在不同相对开度时的流量系数分析···························17第五章总结······················································

7、·参考文献··························································摘要本学期过程流体机械，我组所做课程设计为V型球阀。V型球阀属于固定球阀，也是单阀座密封球阀，调节性能在球阀中比较有优势。本设计说明根据已知的球法者及经验对DN100mm,PN1MPa的球阀进行设计，主要包括了材料选择，结构设计，尺寸计算，强度校核，三维建模，CFD数值模拟分析等。并且，尽量式结构在满足其工艺要求的前提下，降低结构的复杂性。本设计中，根据老师给定的数据和已知条件进行设计，并根据国家标准和设计手册进行选材。设计

8、期间用到了solidworks进行三维建模，并建立了流道图，用到了gambit进行网格划分，设置边界条件，用fluent进