Research On Condition Integrated Monitor And Control System For Reciprocating Compressor

Reciprocating compressor is the industrial production key equipment, widely applies in industrial production domains and so on petroleum, chemical industry, machinery, metallurgy, food.Its working conditions are highly poor,a great many stimulating sources are exit in the compressor,and the structure of reciprocating compressor is quite complex, thus,the compressor often breaks down unknown in the movement process, not only has brought the very major difficulty for compressor's monitor and the control, moreover creates the heavy economic loss for the industrial production. Therefore, the compressor online operating mode monitor and the failure diagnosis into domestic and foreign experts study hot spot topic.First of all,the thesis introduced the reciprocating compressor classification,the composition,the characteristic as well as the principle of work,and has made the analysis and the comparison to compressor's theory operating cycle and the practical work circulation,has laid the rational for the following indicating diagram.Secondly,the paper analyzed the reciprocating compressor common breakdown type as well as their manifestation,found the appropriate monitoring method, had determined can attribute the compressor active status and the breakdown information examination quantity comprehensively.In view of the reciprocating compressor vibration signal processing difficulty,uses the time domain,the frequency range analysis method as well as the wavelet transform method carries on processing to the detection signal.Then,this article profits from the expert to the reciprocating compressor failure diagnosis knowledge and the experience,proposed the compressor failure diagnosis expert system design mentality.In the knowledge gain,has used fault tree's analysis method,and in the compressor fault tree analysis's foundation,has constructed through the production rules reciprocating compressor failure diagnosis expert system's knowledge library.Finally, the comprehensive application of computer technology, examination technology, electronic technology, designed and developed the reciprocating compressor condition integrated monitor and control system, has developed based on the configuration software's system monitoring software, has given P-V indicating diagram calculation and the plan method, the realization of reciprocating compressors running status monitoring and fault diagnosis.The supervisory system indicated after the actual movement that this system has realized to the reciprocating compressor active status real-time monitoring and the failure diagnosis, to further study the reciprocating compressor on-line state monitoring and the failure diagnosis system has provided the theory basis, gained in the practical experience, had certain reference value.