| Gas-liquid pressurization technology is a technology that combines the advantages of pneumatic and hydraulic transmission,with the rapid development of mechanization,mechatronics and automation,this technology is widely used in various fields and has become one of the ideal drive technologies in modern engineering.Among them,the gas-liquid booster pump is a kind of equipment that uses low-pressure compressed air as the working medium to achieve high-pressure output,which has the characteristics of high output pressure,wide range of application and strong reliability,but there are also problems such as poor sealing,long response time and large pressure fluctuation.In view of the existing problems,this paper designs an integrated gas-liquid booster pump with good sealing,short response time and small pressure loss,and mainly does the following work:Firstly,the development status of gas-liquid booster pump is investigated,and the research progress at home and abroad is introduced in detail.The working mode of the existing gas-liquid booster pump is optimized,and the design route of the integrated gas-liquid booster pump and the theoretical basis for the size selection of key technologies are proposed within the specified parameters and dimensions.Secondly,key components such as oil tank,piston,built-in pneumatic directional valve,oil inlet check valve and oil outlet check valve were designed and selected,and the strength of the hydraulic cylinder was calculated.In order to solve the problems related to the motion characteristics of the built-in pneumatic directional valve,the dynamic characteristics of the built-in pneumatic directional valve were studied by mathematical modeling and simulation analysis,and the AMEsim model was established on this basis.Subsequently,a 3D model of the gas-liquid booster pump was built in Solid Works,and key components and gas-liquid booster pump assembly drawings were drawn.The simulation model of gas-liquid booster pump was established by using AMEsim software,and the change curve of pressure under different parameters with time was obtained through simulation.The results show that when the supply pressure is 6 bar,the time required for the gas-liquid booster pump to reach the stable output pressure is about 0.7s,and the output pressure loss decreases with the increase of the air supply input pressure.During the pressurization process,the output pressure fluctuates,the fluctuation is inversely proportional to the input pressure and gradually stabilizes with the operation of the equipment.Finally,a gas-liquid booster pump was manufactured and a test platform was built to collect and analyze the pressure change and response time of the gas-liquid booster pump.The results show that when the supply pressure is 6 bar,the time required for the gas-liquid booster pump to reach the stable output pressure is 0.77 s,and the output pressure loss is only 1.61%,and the pressure loss is significantly reduced.The main work and achievements are summarized,and provide direction for other performance tests and further research of gas-liquid booster pumps. |
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