李晋华 杨甫勤

摘 要：为优化车用CNG气瓶检测过程中资源调配，提高检测效率，缓解气瓶侯检时间长等问题，基于Arena软件平台，建立车用CNG气瓶检测过程分层仿真模型。以某检测站为例进行检测过程仿真，运用系统分析和工业工程的技术方法，分析检测系统各项输出性能指标，找出影响检测效率的瓶颈因素，提出资源调配改进措施。研究结果表明，改进措施在工作人员减少9.09%的情况下，能使检测效率提高22.71%，平均系统逗留时间缩减62.45%，平均队列长缩减50%以上，且检测线各工位资源利用率均衡，该仿真优化方法对于改善现有检测线性能具有工程应用价值。

关键词：气瓶检测；CNG气瓶；检测过程；资源调配；仿真分析

中图分类号：X944.4 文献标识码：A

Abstract： In order to optimize the resources distribution， improve inspection efficiency and solve the problems of being tested waiting too long time in the inspection process， the layered inspection process simulation model of CNG vehicle fuel cylinder has been set up based on the Arena software platform for researching output performance indexes under different resource allocation of the inspection system. An inspection station has been taken as an example to simulate inspection process， the bottleneck factors influencing detection efficiency have been found out and improvement measures of resource allocation have been put forward using the method of system analysis and industrial engineering technology. The results have demonstrated that improvement measures can improve inspection efficiency by 22.71%， reduce system stay time by 62.45% on average and cut short the average queue length by more than 50% on the better resource utilization of each workstation. The method of simulation and optimization has great application valve to improve the inspection of inspection system of CNG vehicle fuel cylinders.

Key words： cylinders inspection； CNG cylinders； inspection process；resource allocation； simulation analysis

0 引 言

随着天然气汽车数量的迅速增加，作为燃气车辆关键部件之一的车用CNG气瓶数量也迅速增长，车用气瓶的安全问题一直是学者们的关注焦点[1-3]。CNG气瓶强制定期检测作为确保气瓶安全使用的重要环节，成为各地政府监管部门对气瓶安全监察重要任务之一。然而，对于在车用CNG气瓶的检测中一直存在的检测效率低[4]，检测时间长[5]及由此造成的气瓶侯检时间长、送检成本较高等问题关注较少，尚没有对检测过程的资源优化以及由此引起的对检测性能指标分析等内容的研究，如何提高检测效率，缓解检测难问题成为急需解决的现实问题。

在检测过程中，气瓶按照到达先后顺序依次进入检测工序，检测项目……