基于TRIZ的弹性液压往复密封增效概念设计研究

Conceptual design study of elastomeric hydraulic reciprocating sealing efficiency reinforcement based on TRIZ

弹性往复密封的概念设计是实现密封增效的关键,它确定了密封装置的密封性能和使用寿命。然而,传统的密封设计由于缺乏有效的设计方法指导,密封的增效设计主要依赖于设计人员的经验和技巧,设计过程带有很大的试凑性和偶然性。为了使密封的增效概念设计成为可操作的过程,提出了基于TRIZ的弹性往复密封增效概念设计模型。以密封的高可靠性、有效性、零泄漏、长寿命和低成本作为弹性液压往复密封增效设计的理想解,基于密封的功能属性分析及密封技术系统的进化分析,通过改变密封功能属性的维度和给定密封技术系统沿各条进化路线可能的潜在状态,获得弹性往复密封增效概念设计解。该模型可缩小密封增效设计方案的搜索空间,加快往复密封增效概念设计的进程。通过Y型密封圈的增效概念设计过程验证了该模型的有效性。

The conceptual design of elastomeric hydraulic re- ciprocating sealing is the key for sealing reinforcement; it deter- mines sealing performance and lifetime of sealing parts. Lacking of effective design method instruction, sealing reinforcement design of traditional seal mainly rely on experience and skills of designers, this made the design process inevitably have the risks of serial trials and errors. In order to make the sealing reinforcement concep- tual design is an operable process, a conceptual design model of elastomerie hydraulic reciprocating sealing reinforcement was put forward based on TRIZ. High reliability, validity, zero leakage, long serve lifetime and low cost were defined as the ideal results of elastomeric hydraulic reciprocating sealing design. Based on func- tion attributes analysis and sealing technology evolution, by chang- ing the dimensions of seal function attributes and giving the future possible potential seal structure states, the reinforcement concep- tual design solution of elastomeric hydraulic reciprocating sealing was obtained. This model can reduce searching space for reinforce- merit design scheme; speed up design process of elastomeric recip- rocating sealing. The validity was verified by taking sealing rein- forcement conceptual design of Y sealing ring as an example.