摘要核电发电站是未来能源领域的重要发展方向,阀门是核电站正常运行关键性设备。 本设计阀门本次设计的闸阀应用于红沿河核电厂 5、6 号机组辅助冷却水系统,在系 统管道上起接通或切断管路的作用,从而保证管路系统的正常运行和减缓事故后果, 当发生事故时,要求其能迅速打开或关闭。82693
针对核电站设备冷却水水系统所处的特殊工况,本文从阀门的安全可靠性、使用 寿命、拆装维修快捷等需求出发,对照常规阀门结构,在阀门密封部件结构和密封面 配对、导向结构、限位装置等方面做出改进和创新。并要求本设计阀门同时满足参照 RCC-M 进行的规范法校核计算。
本文借助 UG 建模检查结构合理性,使用 CF Design 计算流阻分析和利用 Ansys 验证阀门刚性和抗震性能。在满足多种校核方法的前提下设计严格出厂验证试验,充 分保证本设计阀门完全能够满足核电站特殊工况需求。
毕业论文关键词:RCC-M、核二级、平行双闸板、闸阀
Abstract Nuclear power plant is an important direction of development in the future of world energy。 The gate valve is the key device under normal operation of the plant。 The designed gate valve is applied to fifth and sixth units of auxiliary cooling water system in Hongyanhe nuclear power plant。 It can achieve the purpose of opening and closing pipes。 The pipeline system could be ensured normal operation。 The accident consequences may also be slow down。 Once it happens, the valve can be quickly turned on or off。
The design of valve is based on the special working conditions of cooling water system。 The design is started from the demand of safe reliability, service life and convenience to fix and repair 。Compared to the structure of conventional valves, a certain improvement and innovation have made。 For instance, pair sealing part structure and surface。 The calculation and verification of the valve is referred to the standard of RCC-M。
The interference is detected by means of the UG`s modeling function。 Make use of Design SF to calculate flow resistance analysis。 Verify the stiffness and prototype seismic by ANSYS。 Under the premise of checking qualified, the strict factory verification test should be made for the design。 Assure that the valve meet the demands in the special working conditions of nuclear power plant。
Keywords: RCC-M, Class 2, Parallel Double Gate, Gate Valve
目录
第一章 绪论 1
1。1 课题研究背景和意义 1
1。2 平行双闸板闸阀的功能要求 2
1。3。1 国内研究现状 3
1。3。2 国外研究现状 4
1。4 主要设计任务 4
1。5 本章小结 5
第二章 阀门设计 6
2。1 确定阀门规格 6
2。2 确定阀门内径 6
2。3 确定阀门最小壁厚 6
2。4 阀门结构长度 6
2。5 阀门连接形式 6
2。6 阀体阀盖连接形式 7
2。7 中法兰密封结构设计 9
2。8 闸板形式选择 9