毕业设计--煤气加压站控制系统设计

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1、攀枝花学院本科毕业设计（论文） 摘 要 I 摘 要 煤气加压过程是生产加工的重要环节，在大量使用煤气作为热源的场合，由于生产工况不稳定而极其容易造成用气量大幅度频繁波动，同时由于气源管网方面的状况原因，仅靠阀门调节根本无法满足生产要求，直接影响生产的质量和产量。煤气混合加压过程复杂，影响因素多，而我国绝大多数加压站都采用手动控制的方式，这就使得混合煤气的生产质量远远不能达到生产要求，这就需要一种有效的控制方法和控制系统，来使煤气的质量达到合格标准。本文针对攀钢某加压站选用西门子 S7-200 型 PLC 及 G150 系列变频器设计了煤气加压 PLC 控制系统，实现了煤气加压过程的自动化控制。

2、该系统具有操作简单、运行良好、抗干扰能力强、编程简单、控制精度高的特点，在实际运用中，达到了良好效果。 关键词 煤气加压站，闭环控制， PLC， PID，变频器 攀枝花学院本科毕业设计（论文） ABSTRACT II ABSTRACT Production and processing of gas compression process is an important link in the extensive use of gas as a heat source of the occasion, because the production is extremely unstable c

3、onditions likely to cause frequent fluctuations in gas consumption dramatically, and because the gas supply pipe networks status reasons alone valve regulated simply can not meet production requirements, a direct impact on the production of quality and yield. Pressurized gas mixing process is comple

4、x, many factors, but the vast majority of compressor stations are manually controlled manner, which makes hybrid gas production quality is far not achieve production requirements, which requires an effective control method and control systems, to make the gas quality to meet the eligibility criteria

5、. In this paper, a compression station selects Panzhihua Siemens S7-200 PLC and the G150 series inverter-type design with gas pressurized PLC control system to achieve automatic control of gas pressure process. The system has a simple operation, good anti-interference ability, simple programming, control and high accuracy, in practice, to achieve good results. Key words gas pressure， loop control， PLC， PID， VFD