煤矿输气与控制共用管线的高正压束管监测系统研究
Study on high positive pressure beam tube monitoring system of sharing pipeline for gas transmission and pump control
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摘要: 为解决负压束管监测系统气体传输过程中组分和浓度易失真，以及现有正压束管监测系统管路抗压性差、井下分布式正压泵难以远程控制的问题，提出了通过管路本身实现对正压泵远程控制的设计思路，研制了一种输气与控制共用管线的高正压束管监测系统，采用不同长度的管路验证了正压泵远程控制方案的可行性，并采用不同长度管路进行高正压输送气体试验。试验结果表明：输气管路的最优管径为8 mm；正压泵的最优输出压力为2.5 MPa；输气与控制共用管线的高正压束管监测系统不仅解决了气体组分和浓度失真问题，而且实现了远程控制启停正压泵和小流量、高正压输送气体，从而大幅缩短了气体传输时间，提高了煤矿自燃火灾监测的实时性。Abstract: In order to solve the problem that the composition and concentration of gas was easily distorted in the process of gas transmission in negative pressure beam tube monitoring system and the pipeline could not bear high pressure and distributed positive pressure pump was difficult to remotely control in the existing positive pressure beam tube monitoring system. The design idea of remote control of positive pressure pump by pipeline itself is proposed, and a high positive pressure beam tube monitoring system of sharing pipeline for gas transmission and pump control is developed. The feasibility of remote control scheme of positive pressure pump was verified by using pipeline of different lengths ，and the high positive pressure gas transmission test was conducted by using pipeline of different lengths. The results show that the optimal pipe diameter of the pipeline is 8 mm. The optimum output pressure of positive pressure pump is 2.5 MPa. High positive pressure beam tube monitoring system of sharing pipeline for gas transmission and pump control could solve the problem that the composition and concentration of gas easily to distort, and could realized remotely control of starting and stopping positive pressure pump and gas transmission with small flow rate and high positive pressure, thus greatly shortening the gas transmission time and improving the real-time monitoring.
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