The Finite Element Analysis On Key Parts Of The Sea Water Circulation Vertical Pump Planetary Reduction Gear Box

The concrete volute water circulating pump is one of the main four key pump innuclear power plant, the stable and reliable operation of the pump is quite importantto the economic benefit and security of nuclear power station. The circulative verticalplanetary reducer is the key parts of the pump. With the localization, the advance ofserialization in this pump, the key problem of how to reduce the production cost,especially the production cost of circulation pump vertical planetary reducer becamethe vital problem.The finite element method has been widely applied in engineering analysis for itssome advantages like clear physical conception, be easy to master and extensiveapplication scopes and so on. This article provides the data support for theoptimization of system design through the finite element analysis on the inside andoutside the key parts of the helical gear of sea water circulation pump gear box andthe planet shelf by the finite element software ANSYS. At the same time, it alsounderlies the reduce of lubricating oil amount and fuel tank volume through theanalysis on the total transmission system steady temperature field by the thermalnetwork method. Through the above two analysis, the main purpose is to reduce thevertical planetary gear box production cost, laying a solid foundation for theindependent research and development. This research paper mainly has completed thefollowing several tasks:1. Through the3dimensions software Solidworks using the VBA program itcreated involute tooth profile and ultimately make internal and external inclined gearmodel.2. Through the finite element analysis on the sun wheel and planet wheel contactmodel and planet wheel and internal gear contact model, the contact stress and contactdeformation value were concluded. Compared this value with the value calculated bythe GB/T3480-1997of contact strength check algorithm, the calculation error of twoalgorithms is within1.2%. However, the finite element calculation method wassimpler and more detailed results.3. Through the static analysis of the finite element program ANSYS on planetshelf, we can get the planet shelf deformation and stress convective cloud. Accordingto this, the planet shelf deformation law of force can be known; Compared the resultsproduced by the finite element software ANSYS with the calculated results throughthe experience formula, it can check the results of finite element software. According to the planet shelf stress cloud and planet shelf of material yield limit, the planet shelfsafety coefficient can be known.4. According to the basic principle of thermal network method, it set temperaturenode in every transmission system of the waters of the circulation pump gear box andestablished thermal equilibrium according to thermal network diagram, so we couldget the node temperature value by solving the thermal equilibrium state temperaturenode and then compared with sea water pump gear box no-load experiment results.Through these, the high temperature of the drive system, that is a maximum heat, wasconfirmed. All of these can provide data support for the next optimization design.