| The emulsion explosive,a kind of novel green explosive,has advantages of strong water resistance and detonation, simple production technology,large production capability and low production cost.Therefore,the emulsion explosive has been widely used in engineering explosion. For the request of continuance,automation and reliability in the emulsified explosive production, kind of automation control system on emulsion production is designed in this thesis.This system uses PID control technology to realize parameter self-adjustment and enhance production precision.And the video surveillance technology is used to enhance security and reliability of the system enormously.Firstly,the technologic process of the emulsion explosive is generalized in this thesis.The working principle of emulsion explosive production and the demand of technologic control are analyzed.Based on the purpose,the basic principle of meter, sensor and valve,which are used in this system,are introduced,and the models of meter,valve,performing parts and collection parts,such as sensors of flux, temperature,pressure and liquid etc.are chosen.According to the characteristics of the emulsion explosive mixture process, Carried out the design of automatic control system, including I/O distribution, PLC control cabinet wiring diagram and layout, the corresponding control procedures had been developed. the electro-hydraulic control had used in flux that had largely relative in quality of the explosive impact, achieved the PID closed-loop control. temperature, pressure and other key parameters that had a significant impact on production safety overrun alarm.the whole system reach a effective automatic production.This system has been set up and used in the mixing-loading truck of emulsion explosive of BCRH-15C.The operating results declare that this system has good performance withhigh security,high reliability and high automatization.Therefore,the system has been widely spreaded and used in explosive industry. |
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