| 中压闭环气体流量标准装置压力控制系统 |
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| 引用本文： | 唐冰,孙立军,陈卓,宋高昂.中压闭环气体流量标准装置压力控制系统[J].化工自动化及仪表,2016(6). |
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| 作者姓名： | 唐冰 孙立军 陈卓 宋高昂 |
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| 作者单位： | 1. 天津大学电气与自动化工程学院,天津,300072;2. 天津福路瑞特测控技术有限公司,天津,300384 |
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| 摘 要： | 以中压闭环气体流量标准装置为研究对象,设计基于PLC的压力控制系统。给出控制系统的硬件结构和软件功能。运行测试结果表明:当流量点变化后,压力控制系统排气压力在小幅度下降后能够迅速稳定至设定值,且压力稳定性优于0.04%,能够满足闭环气体流量标准装置进行流量仪表检定的使用要求。
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| 关 键 词： | 压力控制系统 中压闭环气体流量标准装置 PLC 压力稳定性 |
Pressure Control System for Gas Flow Facility with Medium-pressure and Closed-loop Pipelines |
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| Abstract: | Taking the gas flow facility with medium pressure as the object of study, a PLC-based pressure con-trol system was designed and its hardware configuration and software functions were presented. The running tests show that when the gas flow varies, the pressure system’ s exhaust pressure can be stabilized to a set val-ue rapidly after a small decline and the pressure stability stays better than 0 . 04% as the flow facility required in calibrating flow instrument. |
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| Keywords: | pressure control system flow measurement gas flow facility with medium pressure and closed-loop pipeline PLC pressure stability |
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