过程型机械系统的方案设计模型

Research of scheme design model for process-formed mechanical system

针对锅炉、汽轮机等具有过程系统相似特征的特定机械系统,提出过程型机械系统的分类概念.借鉴过程系统的概念和理论,分析过程型机械系统的功能和结构,提出将该类机械系统的方案设计分为系统级的总体布置设计和单元级的过程部件设计2个层次,并分别在这2个层次上提出由"功能-行为-结构-知识"4元组构成的方案设计模型.通过抽象定义"广义过程部件"和"广义物料"2类对象,具体描述该方案设计模型中最为关键的物料变换逻辑,并提出一种具有普遍适用性的基于ID关联的过程型机械系统流程逻辑描述方法.应用结果表明,提出的方案设计模型合理有效.

Process-formed mechanical system （PMS） was proposed as a new classification to classify a specific range of mechanical systems, such as boiler and steam turbine, which had similar characters with process system. The structure and principle of PMS was analyzed by learning from the theory of process system, and the scheme design of PMS was divided into two levels, i.e. general layout design and process part design. Consequently, the scheme design model was proposed at these two levels respectively, which built up by 4 elements： function, behavior, structure and knowledge. The abstracted objects of generalized process part and generalized material were defined for representing the logic of material conversion in details, which was the key of the scheme design model. A description method based on ID connection was proposed, which was of universal applicability for the complicated PMS flow topology. The application result shows the presented models are valid and effective for PMS scheme design.