天然气压气设备工况智能化状态监测仪表设计

杨凯 郭建良

文章编号： 2095-2163（2018）03-0091-05中图分类号： 文献标志码： A

摘要： 关键词： for working condition of natural gas pressure equipment

（West East Gas Transmission Branch Company， China Petroleum Pipeline Co. Ltd.， Jincheng Shanxi 048200， China）

Abstract： In order to improve the intelligent monitoring ability of natural gas pressure equipment and ensure the steady operation of natural gas pressure equipment， the optimal design of the monitoring instrument for working condition is carried out. Based on VIX bus technology and DSP integrated information processing， the design scheme of pressure equipment condition monitoring system is presented. The TMS320C50 DSP chip is used as the core processing chip of the status monitoring instrument， and the hardware composition of the monitoring instrument includes data acquisition module， bus output control module， integrated information processing module， signal detection and amplification module and output interface design. VIX integrated bus is used for multi-channel transmission of natural gas pressure state monitoring data， and sensor is used for working condition data acquisition. Through signal conditioning circuit， signal integrated processing is carried out in DSP to realize signal filtering and envelope amplification. Combined with spectrum analysis of signals， the operating state characteristics of gas pressure-equipment are extracted. The optimal design of the intelligent monitoring instrument is realized in PCB. The test results show that the monitoring instrument is more intelligent， compatible and interactive.

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收稿日期： 引言

天然气压气设备主要指天然气压缩机及其配套的产品设备，这类设备长期工作在高负荷状态下，需要进行常规性、全天候的工况状态监测，确保天然气压气设备工作稳定可靠，保障整个天然气的压缩和输送工程的持续可靠运转。研究天然气压气设备的智能化工况监测技术，在压气设备的故障诊断分析、状态测试和可靠性评估等领域中具有很好的应用价值＼[1＼]。

对天然气压气设备的智能监测是建立在对工况数据的有效检测和信息分析基础上，提取天然气压气设备的振动噪声数据、机械数据、电机数据和天然气的压力传感数据，结合传感器设备进行实时信息采集，在中央控制器中进行信息分析，提取压气设备工况状态数据的特征量，根据特征差异性进行状态监测和风险预警评估，完成故障诊断分析和工况模式识别＼[2-3＼]。

为了提高天然气压气设备工况智能化状态监测水平，本文提出基于VIX总线技术和DSP集成信息处理的压气设备工况监测系统设计方案。首先进行天然气压气设备工况智能化状态监测系统的总体结构设计和功能模块分析，采用模块化设计方案进行天然气压气设备工况智能化状态监测仪表的模块化设计，监测仪的硬件组成包括数据采集模块、总线输出控制模块、集成信息处理模块、信号检波放大模块以及输出接口等。……