Analysis And Improvements On Hydraulic Synchronous Control Circuit Of Ultra-high Pressure Sterilization Equipment

Ultra high pressure sterilization technology is the development trend of future sterilization technology，the ultra-high pressure sterilization equipment is the key equipment of the technology.The common food pressure device at home and abroad is consisited by the ultra-high pressure vessel pressure device and the former is the core of the entire unit. The requirement of the device sealing is higher, the container seal structure is an important component of the entire device.When the hydraulic cylinder push plug moving,it has the collision between plug and bayonet, this cause certain influence to the sealing of container, there are many reasons contribute to this phenomenon.Such as equipment manufacturing error and the problem of plug cooperate with super high pressure vessel, the problem of equipment installation improper, the two hydraulic cylinders push plug moving asynchronous and so on. The problem of the manufacturing and installation of the equipment can deal with by improving the manufacturing precision and reduceing the installation error.This paper main research the hydraulic system of the two hydraulic cylinders push plug moving. Because there is no synchronization control links,it find that the two hydraulic cylinder synchronization degree is low.So,it is easy having collision with container bayonet and extrusion to the container internal wall when the plug into the super high pressure vessel, and it can cause a certain influence on ultra-high pressure vessel ‘leakproofness,the former problems can dealed with by improve the manufacturing precision or reduce installation errorr or other measures.This article will analyze, model,simulat and improve the hydraulic system,in ignore equipment manufacturing error and the problem of cooperate and installation, etc,which to promote plug moving,and improve it, making the hydraulic system which to promote plug have a good and accurate synchronization control.In this paper,it has a failure analysis for the two hydraulic cylinder of the hydraulic system which to promote plug moving, after calculation, ruled out the possible reason of the flow provided by the pump source cannot meet system requirements.It find that there is no synchronous control link for the two hydraulic cylinders, we put forward two solutions to this phenomenon in this paper, one is in push plug mobile hydraulic circuit add a synchronous motor control links,making it to be a synchronous circuit of synchronous motors; The other is in push plug mobile hydraulic circuit add a synchronous valve control links, making it to be a synchronous circuit of synchronous valve. It has modeling simulation on the original hydraulic system and the improved hydraulic system on AMESim, having a comparison on speed and displacement of two cylinder piston rod simulation diagram, found the synchronization degree of the original hydraulic system is lowest and the maximal displacement of two cylinder sent to3mm; The duplex synchronous degree of the improved circuit is improved, but the maximal displacement of two cylinder of the synchronous circuit of synchronous motors reaches to1mm. And there has a basic coincidence of the displacement curve and the speed curve of the two cylinder of the synchronous circuit of synchronous valve, achieved a good duplex synchronous degree. By the analysis conclusion, the synchronous circuit of synchronous valve can achieve a good result for synchronization.In this paper, the research content belong to the actual applied. The improvement for this equipment has the practical significance, and it also can provide some experience for the similar synchronization control system’s application practice.It has real economic significance and theoretical value on theoretical study.