煤炭工程 ›› 2020, Vol. 52 ›› Issue (11): 11-15.doi: 10.11799/ce202011003

• 设计技术 • 上一篇    下一篇

基于PID控制算法的瓦斯掺混系统及安全输送设计

李勇   

  1. 中煤科工集团重庆研究院有限公司
  • 收稿日期:2020-05-25 修回日期:2020-07-21 出版日期:2020-11-16 发布日期:2020-12-16
  • 通讯作者: 李勇 E-mail:42948400@qq.com

Gas blending system and safe transportation design based on PID control algorithm

Yong Li   

  • Received:2020-05-25 Revised:2020-07-21 Online:2020-11-16 Published:2020-12-16
  • Contact: Yong Li E-mail:42948400@qq.com

摘要: 丁集煤矿可利用的低浓度瓦斯气源多、流量大、输送距离长,为实现气源均匀混配后安全输送至蓄热氧化发电机组,解决瓦斯掺混系统调节精度低、管网工艺复杂、安全性较差等问题,设计了基于PID控制算法的瓦斯掺混系统。系统采用二次掺混工艺,流体分流设计,PLC集中控制,三级安全保障,确保了系统高效、精准和安全地工作。通过丁集煤矿瓦斯发电厂现场实施应用,系统可将瓦斯浓度降低至爆炸极限范围以下,掺混浓度均匀,安全性较高。该系统的开发,实现了低浓度瓦斯的高效利用,促进了煤矿瓦斯治理与利用的一体化发展。

关键词: 瓦斯掺混, 蓄热氧化, 安全输送, PID控制算法, PLC

Abstract: According to the characteristics of low concentration gas in Dingji Coal Mine, such as many gas sources, large flow and long transportation distance, in order to realize the utilization of gas sources after even mixing, and to transfer the mixed gas to the thermal storage oxidation generator set safely, the gas mixing and transportation system of Dingji Coal Mine is designed from the aspects of process flow, pipe diameter selection, safety assurance, concentration mixing, etc. The field application shows that the system pipeline design and control parameters are reasonable, the gas transmission protection measures are perfect, the operation is stable and reliable, and the mixing concentration meets the requirements of thermal storage oxidation generator set.

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