Current situation and prospect of stepless capacity regulation technology for suction valve in reciprocating compressors
The mismatch between gas supply and demand of reciprocating compressor is the main cause of high energy consumption.The stepless capacity regulation technology for suction valve is an effective means to solve this problem.Its implementation methods include linear mesh partial-stroke pressing-off regulation system and rotary cup-shaped fully controllable regulation system.The linear mesh partial-stroke pressing-off system can realize the precise and continuous regulation of the compressed capacity.The essence is hydraulic transmission control,which has the defects of small flow area,large resistance loss,serious impact,complex execution system and more fault points.Rotary cup-shaped fully controllable regulation system is a new type of stepless capacity regulation technology.Its essence is mechatronics and its principle is to accurately regulate the cup valve through the servo motor.It has the advantages of large flow area,small resistance loss,no friction when opening the valve,small friction stroke when closing the valve,and no impact of moving parts.In this paper,the theory,structure,control system and energy efficiency of the two regulation systems are comprehensively reviewed.It is proposed that the rotary cup controllable regulation system is the future development direction,and further research should be carried out for the theoretical research,structure optimization,material development and intelligent system development of the rotary cup controllable regulation system.
stepless capacity regulation of suction valvelinear mesh valverotary cup valvepartial-stroke pressing-off regulationfully controllable regulationenergy efficiency analysis
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维普
