固定顶油罐膜片式安全阀研制

发布时间：2018-01-24 10:34

本文关键词： 膜片式安全阀膜片大变形油罐刺破装置　出处：《中国矿业大学》2015年硕士论文　论文类型：学位论文

【摘要】：固定顶油罐膜片式安全阀是一种能够适应油罐内压力变化的油罐内外气压平衡安全装置。本文综合考虑固定顶储油罐使用过程中可能导致油罐油气空间压力变化的各种因素,结合国内外呼吸阀、爆破片产品的设计方法和研究思路,运用性能需求分析、可行性探讨、理论分析、实验分析、虚拟样机仿真和物理样机试验的方法,设计和优化了膜片式安全阀的结构,分析了其核心部件—膜片的性能,并进行样机的试制和改进。工作主要从以下几个方面展开:(1)研究了储油罐在实际使用中影响油罐安全的因素,明确了膜片式安全阀的性能需求和设计目标;综合比较目前的超压泄放装置,选择了铝薄片和橡胶薄片作为备选膜片,通过改进和创新,确定了的装置结构方案。(2)基于大变形理论和疲劳寿命理论,采用有限元软件ANSYS,通过对比分析建立合理的膜片数值模拟模型,分析了膜片式安全阀的核心元件—膜片的力学性能,获得铝膜片和橡胶膜片的压力—中心点位移曲线和疲劳寿命理论数据,得出了橡胶膜片较铝膜片具有受压变形量大、耐疲劳性好的结论。(3)搭建膜片受压变形测试试验台,分别测量不同厚度的铝膜片、普通橡胶膜片、经模拟使用环境处理后的橡胶膜片等三种类型膜片受压后的中心点位移。通过分析膜片的受压变形情况及环境适应能力,选择了0.4mm厚度橡胶膜片作为膜片式安全阀的膜片。(4)为提高膜片式安全阀工作可靠性,改进了膜片式安全阀的刺破装置。基于Pro/E建立其三维模型,通过干涉检查,验证结构设计。最后试制膜片式安全阀物理样机,并进行实验室阶段的调试。
[Abstract]:The diaphragm safety valve of fixed top oil tank is a kind of pressure balance safety device inside and outside oil tank, which can adapt to the change of pressure inside and outside of oil tank. This paper synthetically considers that the change of oil and gas space pressure of oil tank may be caused by the use of fixed top oil storage tank. Of all sorts of factors. Combined with the domestic and foreign breathing valve, blasting disc product design methods and research ideas, the use of performance requirements analysis, feasibility discussion, theoretical analysis, experimental analysis, virtual prototype simulation and physical prototype test methods. The structure of diaphragm safety valve is designed and optimized, and the performance of diaphragm is analyzed. The main work of this paper is to study the factors that affect the safety of the oil tank in practical use from the following aspects: 1. The performance requirements and design objectives of diaphragm safety valve are clarified. Compared with the current overpressure release device, aluminum sheet and rubber sheet are selected as alternative diaphragm. Through improvement and innovation, the structure scheme of the device is determined based on large deformation theory and fatigue life theory. The finite element software ANSYSis is used to establish a reasonable numerical simulation model of diaphragm, and the mechanical properties of diaphragm, the core component of diaphragm safety valve, are analyzed. The stress-center point displacement curve and fatigue life theory data of aluminum film and rubber diaphragm are obtained. It is concluded that rubber membrane has more compression deformation than aluminum film. Conclusion of good fatigue resistance. (3) set up the diaphragm compression deformation test bench, measure the different thickness of aluminum film, ordinary rubber diaphragm. The center displacement of three types of diaphragm, such as rubber diaphragm, was simulated after environmental treatment. The compression deformation of the diaphragm and its adaptability to the environment were analyzed. In order to improve the working reliability of diaphragm safety valve, 0.4 mm thick rubber diaphragm was selected as diaphragm of diaphragm safety valve. The piercing device of diaphragm safety valve is improved. The three-dimensional model is established based on Pro/E, and the structure design is verified by interference inspection. Finally, the physical prototype of diaphragm safety valve is produced. And carry on the debugging of the laboratory stage.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE972

【参考文献】