Abstract:
Background Tesla-type pulse power generators are generally filled with high-pressure insulating gas to achieve internal insulation and are subjected to diverse vibration loads during service, thereby requiring their structural design to satisfy both static and dynamic strength requirements.
Purpose Based on practical engineering cases, this study summarizes a mechanical structure design method for Tesla-type pulse power generators, aiming to provide guidance for the structural optimization and reliability evaluation of relevant equipment.
Methods In the static pressure design, the failure modes of inner and outer conductors are distinguished, and the stability performance is taken as the primary evaluation index for inner conductors under external pressure. A bolt preload calculation method is established based on the gasket stress method and deformation compatibility principle. Numerical simulation is adopted to evaluate sealing reliability through contact stress analysis, and the vector superposition of static and dynamic stresses is applied to evaluate the structural strength under vibration conditions.
Results An engineering calculation method for the critical external pressure of inner conductors is presented, and a quantitative bolt preload selection formula with upper and lower limits is derived. The critical groove clearance thresholds corresponding to different O-ring specifications are determined. Moreover, the maximum through-thickness stress is validated as a feasible benchmark for static strength evaluation, and the actual total stress under vibration conditions can be accurately obtained through the vector superposition of static and dynamic stresses.
Conclusions The proposed integrated design and verification method can effectively meet the static and dynamic service requirements of pulse power generators, offering a reliable reference for the mechanical structural design of similar equipment.
下载: