Study On The Performance Of Cylinder Drive System Based On Exhaust Recovery

Compressed air is one of the widely used energy sources in the industrial field due to its non-polluting characteristics.The cylinder is one of the widely used actuators in the compressed air system,in the traditional circuit,after completing a working stroke,the gas in the exhaust chamber is directly discharged to the atmosphere,this part of the gas still has energy.Therefore,recovering the exhaust gas of the cylinder has important practical significance for achieving energy saving and improving the utilization rate of compressed air.This article focuses on how to realize the recovery of cylinder exhaust gas,and proposes a new scheme—a cylinder drive system based on exhaust gas recovery,which recovers and stores part of the high-pressure gas in the exhaust chamber to the gas tank,thereby achieving the purpose of energy saving.The main research work of the thesis is divided into the following aspects:(1)Based on the idea of recovering the exhaust of the cylinder to achieve energy saving,a cylinder drive system based on exhaust gas recovery is proposed,which controls the movement of the cylinder piston and the flow of cylinder exhaust gas by opening and closing the control valve.The recovered gas is stored in the gas tank,and to achieve the purpose of energy saving,by controlling the opening and closing of the valve to control the movement of the cylinder piston and the flow of cylinder exhaust gas,the exhaust gas is recovered and stored in the gas tank to achieve the purpose of energy saving.(2)The basic mathematical model of the system is established based on the energy equation,mass flow equation,motion equation and pressure equation,for the convenience of research,a dimensionless analysis method is used to select a suitable reference value to convert the basic mathematical model into a causeless the sub-model,using MATLAB / Simulink to simulate the dimensionless model;in order to be closer to the actual working conditions,keep other conditions unchanged,and change the air supply pressure of the cylinder and the volume of the gas tank one by one,and carry out a simulation.(3)In order to fully understand the speed characteristics of the piston and the change law of the exhaust recovery efficiency of the system before the experiment,conduct a dimensionless study on the exhaust recovery efficiency of the system and the speed of the piston to obtain the key factors affecting the speed and efficiency Speed and efficiency are the goals to optimize the parameters to obtain an optimal set of parameters.Under this group of parameter combinations,the exhaust recovery efficiency of the system after completing a cycle is 24.89%.(4)Build a system experiment platform,compile the system data collection and control program,collect pressure,flow,speed and other data,control the power on and off of the solenoid valve,conduct experimental research,verify the simulation model,to be closer to the actual working conditions experimental research was carried out under variable operating conditions,and the exhaust gas recovery efficiency of the system was measured and calculated,indicating that the system has a higher recovery efficiency.(5)In view of the partial defects of the experimental platform during installation,an integrated method was adopted to improve the structure of the experimental platform,and a pneumatic integrated system based on exhaust gas recovery was designed to reduce the space ratio,leakage and increase the mobility of the system.