双锥环密封系统的应用研究
发布时间：2018-12-15 18:27
【摘要】：随着石化企业规模及设备的大型化,设备的密封性能要求也越来越高。双锥密封结构由于其良好的综合密封性能在各种类型的高压容器密封结构中得到广泛应用。根据密封的作用力不同,高压密封常用的结构形式可以分为强制密封、半自紧密封和自紧密封。双锥密封是一种半自紧式密封结构,它具有结构形式简单、易于加工的优点,并且装拆十分方便,对压力与温度波动具有自适应性。但是它的密封原理比较复杂,其性能受到很多因素的影响。本文在探讨双锥环密封的密封原理基础上,分别对预紧工况、操作工况下的受力及操作密封比压进行了分析。并对双锥密封性能影响因素如介质压力、径向间隙、双锥环尺寸、双锥环密封面宽度、双锥环密封面接触情况以及主预紧力等进行了分析,。在理论分析的基础上,本文对一台合成氨塔的密封系统进行设计。在分析比较了目前常见的法兰连接密封设计方法后,选择了GB150中规定的法兰设计方法。而后对双锥环密封参数、环法兰连接螺栓参数及连接方式进行了设计,得到了垫片、双锥环、螺栓等的结构尺寸。双锥环密封系统所处的环境不可能是一成不变的,在使用中环境压力和环境温度会不断的发生不同幅度的波动。因此,本文对整个密封系统对环境波动的适应性进行了分析,得出了双锥环密封具有良好的适应性。此外,文章又对双锥环密封系统法兰安装进行了介绍,从螺栓联接方法、螺栓预紧次序及螺栓载荷监控和测量三方面探讨了双锥环密封系统法兰安装中应注意的问题。
[Abstract]:With the scale of petrochemical enterprises and the large-scale equipment, the sealing performance of the equipment is more and more high. Double cone seal structure has been widely used in various types of high pressure vessel sealing structure due to its good comprehensive sealing performance. According to the different sealing force, the structure of high pressure seal can be divided into forced seal, semi-self-tight seal and self-tight seal. Double cone seal is a kind of semi-self-tight seal structure, which has the advantages of simple structure, easy processing, convenient installation and disassembly, and self-adaptability to pressure and temperature fluctuation. But its sealing principle is complicated and its performance is affected by many factors. On the basis of discussing the sealing principle of double cone ring seal, this paper analyzes the preloading condition, the operating condition and the specific pressure of the operation seal respectively. The influence factors such as medium pressure, radial clearance, size of double cone ring, width of double cone ring seal face, contact condition of double cone ring seal surface and main pretightening force are analyzed. On the basis of theoretical analysis, the sealing system of a synthetic ammonia tower is designed in this paper. After analyzing and comparing the common design methods of flange joint seal, the flange design method stipulated in GB150 is selected. Then the parameters of double cone ring seal, ring flange connection bolt parameters and connection mode are designed, and the structure dimensions of gasket, double cone ring and bolt are obtained. The environment of the double cone ring seal system can not be fixed, and the environmental pressure and temperature will fluctuate continuously in use. Therefore, the adaptability of the whole seal system to the environmental fluctuation is analyzed in this paper, and it is concluded that the double cone ring seal has good adaptability. In addition, the installation of flange in double cone ring sealing system is introduced, and the problems needing attention in the installation of flange of double cone ring seal system are discussed from three aspects: bolt connection method, bolt pretightening order and bolt load monitoring and measurement.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TQ113.252;TB42
本文编号：2381093
[Abstract]:With the scale of petrochemical enterprises and the large-scale equipment, the sealing performance of the equipment is more and more high. Double cone seal structure has been widely used in various types of high pressure vessel sealing structure due to its good comprehensive sealing performance. According to the different sealing force, the structure of high pressure seal can be divided into forced seal, semi-self-tight seal and self-tight seal. Double cone seal is a kind of semi-self-tight seal structure, which has the advantages of simple structure, easy processing, convenient installation and disassembly, and self-adaptability to pressure and temperature fluctuation. But its sealing principle is complicated and its performance is affected by many factors. On the basis of discussing the sealing principle of double cone ring seal, this paper analyzes the preloading condition, the operating condition and the specific pressure of the operation seal respectively. The influence factors such as medium pressure, radial clearance, size of double cone ring, width of double cone ring seal face, contact condition of double cone ring seal surface and main pretightening force are analyzed. On the basis of theoretical analysis, the sealing system of a synthetic ammonia tower is designed in this paper. After analyzing and comparing the common design methods of flange joint seal, the flange design method stipulated in GB150 is selected. Then the parameters of double cone ring seal, ring flange connection bolt parameters and connection mode are designed, and the structure dimensions of gasket, double cone ring and bolt are obtained. The environment of the double cone ring seal system can not be fixed, and the environmental pressure and temperature will fluctuate continuously in use. Therefore, the adaptability of the whole seal system to the environmental fluctuation is analyzed in this paper, and it is concluded that the double cone ring seal has good adaptability. In addition, the installation of flange in double cone ring sealing system is introduced, and the problems needing attention in the installation of flange of double cone ring seal system are discussed from three aspects: bolt connection method, bolt pretightening order and bolt load monitoring and measurement.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TQ113.252;TB42
【参考文献】
相关期刊论文 前10条
1 冯秀;顾伯勤;;金属垫片密封连接的泄漏率计算[J];化工学报;2010年05期
2 韩树新;盛水平;郑津洋;高永建;周宁;;大型双锥密封过程非线性数值分析[J];压力容器;2008年12期
3 白海永;傅吉坤;周大坤;;氨合成塔外壳双锥环密封结构的分析[J];压力容器;2008年04期
4 张永;马歆;开方明;孙国有;郑津洋;黄开杰;刘国荣;陆瑞忠;;大型氨合成塔双锥密封过程的数值模拟[J];中氮肥;2006年05期
5 王基铭;;中国石化工业现状与发展及重大石化装备国产化[J];当代石油石化;2006年04期
6 钱伯章;石化专用设备向大型化发展[J];化工机械;2005年02期
7 王松汉;我国乙烯工业的合理规模和布局[J];化工技术经济;2004年08期
8 冯秀,顾伯勤;金属垫片密封研究进展[J];润滑与密封;2004年01期
9 蔡仁良;国外压力容器及管道法兰设计技术研究进展[J];石油化工设备;2003年01期
10 张文明;我国“三大化工”重大技术装备研制和国产化工作概况[J];现代化工;2000年08期
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