机电产品本质安全度研究
发布时间：2018-08-20 18:43
【摘要】：随着全球经济、技术的飞速发展,机电产品日益大型化、复杂化、应用广泛化。传统的依据以往的经验教训亡羊补牢式的产品安全性设计方法已经不能满足人们日益增长的对产品安全性的要求,同时也承受不起因之带来的巨大损失。因此,在设计阶段通过科学的安全性分析与风险评价,使全寿命周期各阶段安全风险达到可接受水平,已成为产品质量乃至系统安全性研究者重点关注的内容之一。 为了更好地提高产品安全性,出现了本质安全的相关研究。本论文在原有安全性量化研究的基础上,针对以往产品安全性量化、评价存在的对产品本质安全化程度考虑不充分等相关问题,对机电产品本质安全度进行了研究。 本文首先在已有本质安全研究的基础上,提出了本质安全度的概念,并分析了其内涵;以物质的危险性、结构的复杂度和关键件的可靠度为指标,给出了本质安全度的定性分级模式;其次,针对有安全装置的产品,利用模糊理论确定安全装置某种故障模式最可能发生的故障状态,重点分析了该状态下残余的安全功能对产品事故发生的影响,同时借助故障树分析方法,建立了产品本质安全度的量化模型;此外,分析了安全装置对产品本质安全度的影响,并给出了影响程度的计算过程,为安全装置的选择提供了依据。从而为产品安全性设计方案的选择提供理论依据和方法,亦可为建立全面的、科学的产品安全性评价体系奠定理论基础。最后,以电梯为例,通过对其本质安全度的求取,验证了本论文研究内容的可应用性。
[Abstract]:With the rapid development of global economy and technology, mechanical and electrical products are becoming more and more large, complicated and widely used. The traditional product safety design method, which is based on the past experience and lessons, can not meet the increasing demand of product safety, and at the same time, it can not afford the huge loss. Therefore, through scientific safety analysis and risk evaluation in the design phase, it has become one of the key concerns of product quality and system safety researchers to make the safety risk of the whole life cycle reach the acceptable level. In order to improve the safety of products, there has been related research on essential safety. On the basis of the original safety quantification research, this paper studies the intrinsic safety degree of mechanical and electrical products, aiming at the related problems of product safety quantization in the past and evaluating the degree of product essential safety. On the basis of the existing research on essential safety, the concept of essential safety degree is put forward in this paper, and its connotation is analyzed, which is based on the risk of substance, the complexity of structure and the reliability of key parts. The qualitative classification model of the essential safety degree is given. Secondly, the fuzzy theory is used to determine the most likely fault state of a certain fault mode of a safety device for a product with a safety device. The influence of residual safety function on the occurrence of product accidents is analyzed, and the quantitative model of product essential safety degree is established by means of fault tree analysis, and the influence of safety device on product essential safety degree is analyzed. The calculation process of the influence degree is given, which provides the basis for the selection of safety device. Thus it can provide theoretical basis and method for the selection of product safety design scheme, and also lay a theoretical foundation for the establishment of a comprehensive and scientific product safety evaluation system. Finally, taking elevator as an example, the applicability of the research content is verified by calculating the intrinsic safety degree of elevator.
【学位授予单位】：沈阳航空航天大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH122;TH-39
本文编号：2194634
[Abstract]:With the rapid development of global economy and technology, mechanical and electrical products are becoming more and more large, complicated and widely used. The traditional product safety design method, which is based on the past experience and lessons, can not meet the increasing demand of product safety, and at the same time, it can not afford the huge loss. Therefore, through scientific safety analysis and risk evaluation in the design phase, it has become one of the key concerns of product quality and system safety researchers to make the safety risk of the whole life cycle reach the acceptable level. In order to improve the safety of products, there has been related research on essential safety. On the basis of the original safety quantification research, this paper studies the intrinsic safety degree of mechanical and electrical products, aiming at the related problems of product safety quantization in the past and evaluating the degree of product essential safety. On the basis of the existing research on essential safety, the concept of essential safety degree is put forward in this paper, and its connotation is analyzed, which is based on the risk of substance, the complexity of structure and the reliability of key parts. The qualitative classification model of the essential safety degree is given. Secondly, the fuzzy theory is used to determine the most likely fault state of a certain fault mode of a safety device for a product with a safety device. The influence of residual safety function on the occurrence of product accidents is analyzed, and the quantitative model of product essential safety degree is established by means of fault tree analysis, and the influence of safety device on product essential safety degree is analyzed. The calculation process of the influence degree is given, which provides the basis for the selection of safety device. Thus it can provide theoretical basis and method for the selection of product safety design scheme, and also lay a theoretical foundation for the establishment of a comprehensive and scientific product safety evaluation system. Finally, taking elevator as an example, the applicability of the research content is verified by calculating the intrinsic safety degree of elevator.
【学位授予单位】：沈阳航空航天大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH122;TH-39
【引证文献】
相关期刊论文 前1条
1 文钦弘;杨博钦;;乘用车本质安全度评价模式研究[J];沈阳理工大学学报;2013年01期
，本文编号：2194634
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