Research On Rapid Target Changing System For Hybrid Reactor Driven By Z-pinch

With the increasing energy consumption of human society, it is imminent todevelop a new kind of energy which is regarded as the fundamental way to solve theenergy crisis. hybrid reactor driven by Z-pinch is a promising new energy pathwayswith the advantage of abundant resources and enormous release of energy. It attractsmuch more attention of the researchers around the world. As an important part of it, therapid target changing system is essential. The rapid target changing system is mainlyresponsible for the transport of target, the installation of new target and the removing ofwasted target tasks.Target changing frequency is0.1Hz, load weighing5t, stroke is up to10m, and thedeformation of the end of the load is to be controlled in0.5mm. Based on theseindicators, combined with existing domestic and foreign technology, deep research iscarried out in the following several aspects in this article: the design of rapid targetchanging system, vibration characteristics analysis of high speed overloaded mechanismand thermal-mechanical coupled analysis of RTL.In terms of the design of rapid target changing system, For high-speed, overloaded,and large stroke technical difficulties, developed the overall program for the rapid targetchanging system, designed the overall flow of the system according to target changingfrequency requirements. Designed the transport system with trolley, turntable and rail inorder to achieve the task of target transportation. Analyzed the structural strength of thetrolley and verified the power system program of it. Then, designed the high speedoverloaded mechanism with linear motor, roller rails, magnetic grid feet and grappleassembly in order to achieve the task to send the target in the vertical direction. S-curvevelocity profiles were planned to alleviate the impact of high speed moving, calculatedthe trust of motor and the contact fatigue strength of roller according to S-curve.Combined with vacuum linkage requirements, designed the interface mechanism usinglocking clamps and control Swivels to achieve sealing/communicating switching andtarget picking, target removing operation.In the aspect of vibration characteristics analysis of high speed overloaded mechanism, established roller contact model based on contact theory. According to thecontact model, combining Lagrange equation dynamic model was established, got freevibration equation to calculated natural frequencies, and the finite element simulationresults were compared to verify the accuracy of the model. Starting from the vibrationcharacteristics of the structure, the main parameters that influence the natural frequencyand quality of structure were found. Under the premise of ensuring the naturalfrequency away from the exciting force, optimized structural to achieve a minimumquality.In terms of thermal-mechanical coupled analysis of RTL, Based on elastic shelltheory, a conical shell structural mechanics model of RTL was established, and the statetransfer matrix of RTL was derived. Solved the transfer equations using boundaryconditions, and compared the finite element simulation results to verify the accuracy ofthe model. The temperature field in real environment of RTL were solved, completedthe thermal-mechanical coupled analysis of RTL in real environment using the transfermatrix method, and got the deformation of the end of RTL.