DN8025MPa双闸板平板闸阀的设计.docVIP

DN80 25MPa双闸板平板闸阀的设计 DN80 25MPa双闸板平板闸阀的设计 摘要 双闸板平板闸阀由于其自身的诸多优点普遍应用于石油化工行业，本文立足于双闸板平板闸阀的密封性能和结构创新展开研究。主要的设计思路围绕双闸板展开，以简单、稳定、可靠的设计方向为准则，通过对闸板的设计和改良，达到良好的密封防漏效果。设计中考虑到实际应用过程中的情况，一改传统闸阀的形式，在开启状态也能使两个闸板与阀座密封圈全部紧密接触，实现介质在阀体内的流通的同时也可以有效防止介质对阀腔的冲刷影响。即启闭两个状态都实现了介质对阀腔的零影响。从而比较好地实现了阀腔的防漏，提高了阀门的使用寿命。作为高压闸阀，本文设计的一些零件及尺寸大都符合国家标准，能确保安全操作。此外本文还简要介绍了双闸板平板闸阀的一些主要类型。 　　关键词：双闸板 密封 防漏 The Design of Double Disc Flat Gate Valves DN80 25MPa ABSTRACT Because of its advantages, Double Disc Flat Gate Valves are extensively used in refinery, petrochemical and chemical industries, this article develops the research on the basis of sealability and originality of the Double Disc Flat Gate Valves.The line of the programming is the Double Disc, by the rule of simpleness stabilization and credibility.achieving good results of sealing by the design and improving of the Wedge Disc. Taking account of the situation of practical applications.by changing the form of traditional valve, when it opens it also enables the two gate valve seat ring with all the close contacts, and media in the valve in the flow of the medium can also be effective in preventing the erosion impact of the valve cavity. That is, the two states (on and off) have achieved a medium on the valve cavity is affected. So as to realize the valve cavity leak-proof better and improve the life of the valve. As a high-pressure valve, some parts of this design and size mostly accord with the state standards, to ensure safe operation. In addition the article also introduces some other types of Double Disc Flat Gate Valves. 　　Keywords: Double Disc Seal Caulk 目 录 第1章 前言 1 1.1 研究设计双闸板平板闸阀的意义 1 1.2 课题研究的背景 1 第2章 双闸板平板闸阀的闸板方案设计 3 2.1 方案一 3 2.2 方案二 4 第3章　DN80 25MPa双闸板平板闸阀的设计 6 第4章　阀体壁厚的计算与阀杆的校核 18 4.1的校核 18 4.1.1的校核 18 第5章　结论 22 致谢 25 参考文献 26 附录 27 附录A：展板 27 第1章 前言 1.1 研究双闸板平板闸阀的意义 随着石油开发向内地油田和海上油田的转移，以及电力工业由30万千瓦以下的火电向30万千瓦以上的火电及水电和核电发展，阀门产品也应依据设备应用领域变化相应改变其性能及参数。输油 、输气工程向管道化方向发展，这又需要大量的平板闸阀及球阀 。国有经济持续稳定发