pn40dn300双缸气动弹性单闸板闸阀设计正文.docx

摘 要 阀门在国民经济的各个部门中有着广泛的应用。阀门安装在各种管路系统中用于控制流体的压力，流量和流向。由于流体的压力、流量、温度和物理化学性质的不同，对流体系统的控制要求和使用要求也不同，所以阀门的种类和品种规格非常多。 本文着重介绍了闸阀，对闸阀的各种重要组成部件进行验算，以达到理论上验算合格才可使用。在计算时，严格按照参考书及手册的步骤核算，同时应保证所设计产品的材料低廉。 关键词： 阀门，闸阀，计算。  Abstract The valve in the various sectors of the national economy has been widely used. Valve installed in the various kinds of piping system is used to control the fluid pressure, flow and direction of flow. Due to the fluid pressure, flow rate, temperature and different physical and chemical properties, of the fluid system control demands and use is also different, so the valve types and varieties of specifications. This paper emphatically introduces the gate, the gate of a variety of important components for calculation, theoretical calculation is eligible to use in order to achieve. In computing, in strict accordance with the reference and the steps of the manual, and shall ensure that the design product material is low. Keywords：Valve, Slide Valve, Account.  目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc387363259 摘 要 PAGEREF _Toc387363259 \h 1 HYPERLINK \l _Toc387363260 Abstract PAGEREF _Toc387363260 \h 2 HYPERLINK \l _Toc387363261 第一章 绪 论 PAGEREF _Toc387363261 \h 6 HYPERLINK \l _Toc387363262 1.1闸阀的定义 PAGEREF _Toc387363262 \h 7 HYPERLINK \l _Toc387363263 1.1.1 闸阀的种类 PAGEREF _Toc387363263 \h 7 HYPERLINK \l _Toc387363264 1.1.2 闸阀的密封原理和特点 PAGEREF _Toc387363264 \h 8 HYPERLINK \l _Toc387363265 1.1.3 闸阀优点 PAGEREF _Toc387363265 \h 8 HYPERLINK \l _Toc387363266 1.1.4 闸阀的缺点 PAGEREF _Toc387363266 \h 8 HYPERLINK \l _Toc387363267 1.2选题意义 PAGEREF _Toc387363267 \h 9 HYPERLINK \l _Toc387363268 1.3 国内外阀门的发展 PAGEREF _Toc387363268 \h 9 HYPERLINK \l _Toc387363269 1.3.1 国外阀门的发展 PAGEREF _Toc387363269 \h 9 HYPERLINK \l _Toc387363270 1.3.2 国内阀门的发展 PAGEREF _Toc387363270 \h 10 HYPERLINK \l _Toc387363271 第二章 双缸式气动楔式闸阀结构及使用注意事项 PAGEREF _Toc387363271 \h 12 HYPERLINK \l _Toc387363272 2.1 工作原理及特点 PAGEREF _Toc387363272 \h 12 HYPERLINK \l _Toc387363273 2.1.1