Cllege of Mining and Safety Engineering, Shandong Uniersiy of Science and Technology, Qingdao , China

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.

国家重点研发计划资助项目（2018YFC0807906）；国家自然科学基金资助项目（51574279）